diff options
Diffstat (limited to 'source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp')
| -rw-r--r-- | source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp | 11217 |
1 files changed, 5586 insertions, 5631 deletions
diff --git a/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp index 5f8242211b7f..9ef4e9c3c9b1 100644 --- a/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp +++ b/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp @@ -10,9 +10,13 @@ // C Includes // C++ Includes // Other libraries and framework includes -#include "llvm/ADT/StringRef.h" +#include "llvm/ADT/StringRef.h" // Project includes +#include "Plugins/Process/Utility/RegisterContextDarwin_arm.h" +#include "Plugins/Process/Utility/RegisterContextDarwin_arm64.h" +#include "Plugins/Process/Utility/RegisterContextDarwin_i386.h" +#include "Plugins/Process/Utility/RegisterContextDarwin_x86_64.h" #include "lldb/Core/ArchSpec.h" #include "lldb/Core/DataBuffer.h" #include "lldb/Core/Debugger.h" @@ -28,10 +32,11 @@ #include "lldb/Core/StreamString.h" #include "lldb/Core/Timer.h" #include "lldb/Core/UUID.h" -#include "lldb/Host/Host.h" #include "lldb/Host/FileSpec.h" +#include "lldb/Host/Host.h" #include "lldb/Symbol/DWARFCallFrameInfo.h" #include "lldb/Symbol/ObjectFile.h" +#include "lldb/Target/DynamicLoader.h" #include "lldb/Target/MemoryRegionInfo.h" #include "lldb/Target/Platform.h" #include "lldb/Target/Process.h" @@ -39,16 +44,13 @@ #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" #include "lldb/Target/ThreadList.h" -#include "Plugins/Process/Utility/RegisterContextDarwin_arm.h" -#include "Plugins/Process/Utility/RegisterContextDarwin_arm64.h" -#include "Plugins/Process/Utility/RegisterContextDarwin_i386.h" -#include "Plugins/Process/Utility/RegisterContextDarwin_x86_64.h" #include "lldb/Utility/SafeMachO.h" #include "ObjectFileMachO.h" -#if defined (__APPLE__) && (defined (__arm__) || defined (__arm64__) || defined (__aarch64__)) +#if defined(__APPLE__) && \ + (defined(__arm__) || defined(__arm64__) || defined(__aarch64__)) // GetLLDBSharedCacheUUID() needs to call dlsym() #include <dlfcn.h> #endif @@ -65,3870 +67,2966 @@ using namespace llvm::MachO; // Some structure definitions needed for parsing the dyld shared cache files // found on iOS devices. -struct lldb_copy_dyld_cache_header_v1 -{ - char magic[16]; // e.g. "dyld_v0 i386", "dyld_v1 armv7", etc. - uint32_t mappingOffset; // file offset to first dyld_cache_mapping_info - uint32_t mappingCount; // number of dyld_cache_mapping_info entries - uint32_t imagesOffset; - uint32_t imagesCount; - uint64_t dyldBaseAddress; - uint64_t codeSignatureOffset; - uint64_t codeSignatureSize; - uint64_t slideInfoOffset; - uint64_t slideInfoSize; - uint64_t localSymbolsOffset; - uint64_t localSymbolsSize; - uint8_t uuid[16]; // v1 and above, also recorded in dyld_all_image_infos v13 and later +struct lldb_copy_dyld_cache_header_v1 { + char magic[16]; // e.g. "dyld_v0 i386", "dyld_v1 armv7", etc. + uint32_t mappingOffset; // file offset to first dyld_cache_mapping_info + uint32_t mappingCount; // number of dyld_cache_mapping_info entries + uint32_t imagesOffset; + uint32_t imagesCount; + uint64_t dyldBaseAddress; + uint64_t codeSignatureOffset; + uint64_t codeSignatureSize; + uint64_t slideInfoOffset; + uint64_t slideInfoSize; + uint64_t localSymbolsOffset; + uint64_t localSymbolsSize; + uint8_t uuid[16]; // v1 and above, also recorded in dyld_all_image_infos v13 + // and later }; -struct lldb_copy_dyld_cache_mapping_info -{ - uint64_t address; - uint64_t size; - uint64_t fileOffset; - uint32_t maxProt; - uint32_t initProt; +struct lldb_copy_dyld_cache_mapping_info { + uint64_t address; + uint64_t size; + uint64_t fileOffset; + uint32_t maxProt; + uint32_t initProt; }; -struct lldb_copy_dyld_cache_local_symbols_info -{ - uint32_t nlistOffset; - uint32_t nlistCount; - uint32_t stringsOffset; - uint32_t stringsSize; - uint32_t entriesOffset; - uint32_t entriesCount; +struct lldb_copy_dyld_cache_local_symbols_info { + uint32_t nlistOffset; + uint32_t nlistCount; + uint32_t stringsOffset; + uint32_t stringsSize; + uint32_t entriesOffset; + uint32_t entriesCount; }; -struct lldb_copy_dyld_cache_local_symbols_entry -{ - uint32_t dylibOffset; - uint32_t nlistStartIndex; - uint32_t nlistCount; +struct lldb_copy_dyld_cache_local_symbols_entry { + uint32_t dylibOffset; + uint32_t nlistStartIndex; + uint32_t nlistCount; }; - -class RegisterContextDarwin_x86_64_Mach : public RegisterContextDarwin_x86_64 -{ +class RegisterContextDarwin_x86_64_Mach : public RegisterContextDarwin_x86_64 { public: - RegisterContextDarwin_x86_64_Mach (lldb_private::Thread &thread, const DataExtractor &data) : - RegisterContextDarwin_x86_64 (thread, 0) - { - SetRegisterDataFrom_LC_THREAD (data); - } + RegisterContextDarwin_x86_64_Mach(lldb_private::Thread &thread, + const DataExtractor &data) + : RegisterContextDarwin_x86_64(thread, 0) { + SetRegisterDataFrom_LC_THREAD(data); + } - void - InvalidateAllRegisters() override - { - // Do nothing... registers are always valid... - } - - void - SetRegisterDataFrom_LC_THREAD (const DataExtractor &data) - { - lldb::offset_t offset = 0; - SetError (GPRRegSet, Read, -1); - SetError (FPURegSet, Read, -1); - SetError (EXCRegSet, Read, -1); - bool done = false; - - while (!done) - { - int flavor = data.GetU32 (&offset); - if (flavor == 0) - done = true; - else - { - uint32_t i; - uint32_t count = data.GetU32 (&offset); - switch (flavor) - { - case GPRRegSet: - for (i=0; i<count; ++i) - (&gpr.rax)[i] = data.GetU64(&offset); - SetError (GPRRegSet, Read, 0); - done = true; + void InvalidateAllRegisters() override { + // Do nothing... registers are always valid... + } - break; - case FPURegSet: - // TODO: fill in FPU regs.... - //SetError (FPURegSet, Read, -1); - done = true; - - break; - case EXCRegSet: - exc.trapno = data.GetU32(&offset); - exc.err = data.GetU32(&offset); - exc.faultvaddr = data.GetU64(&offset); - SetError (EXCRegSet, Read, 0); - done = true; - break; - case 7: - case 8: - case 9: - // fancy flavors that encapsulate of the above - // flavors... - break; + void SetRegisterDataFrom_LC_THREAD(const DataExtractor &data) { + lldb::offset_t offset = 0; + SetError(GPRRegSet, Read, -1); + SetError(FPURegSet, Read, -1); + SetError(EXCRegSet, Read, -1); + bool done = false; + + while (!done) { + int flavor = data.GetU32(&offset); + if (flavor == 0) + done = true; + else { + uint32_t i; + uint32_t count = data.GetU32(&offset); + switch (flavor) { + case GPRRegSet: + for (i = 0; i < count; ++i) + (&gpr.rax)[i] = data.GetU64(&offset); + SetError(GPRRegSet, Read, 0); + done = true; + + break; + case FPURegSet: + // TODO: fill in FPU regs.... + // SetError (FPURegSet, Read, -1); + done = true; + + break; + case EXCRegSet: + exc.trapno = data.GetU32(&offset); + exc.err = data.GetU32(&offset); + exc.faultvaddr = data.GetU64(&offset); + SetError(EXCRegSet, Read, 0); + done = true; + break; + case 7: + case 8: + case 9: + // fancy flavors that encapsulate of the above + // flavors... + break; - default: - done = true; - break; - } - } + default: + done = true; + break; } + } } - - static size_t - WriteRegister (RegisterContext *reg_ctx, const char *name, const char *alt_name, size_t reg_byte_size, Stream &data) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); - if (reg_info == NULL) - reg_info = reg_ctx->GetRegisterInfoByName(alt_name); - if (reg_info) - { - lldb_private::RegisterValue reg_value; - if (reg_ctx->ReadRegister(reg_info, reg_value)) - { - if (reg_info->byte_size >= reg_byte_size) - data.Write(reg_value.GetBytes(), reg_byte_size); - else - { - data.Write(reg_value.GetBytes(), reg_info->byte_size); - for (size_t i=0, n = reg_byte_size - reg_info->byte_size; i<n; ++ i) - data.PutChar(0); - } - return reg_byte_size; - } - } - // Just write zeros if all else fails - for (size_t i=0; i<reg_byte_size; ++ i) + } + + static size_t WriteRegister(RegisterContext *reg_ctx, const char *name, + const char *alt_name, size_t reg_byte_size, + Stream &data) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); + if (reg_info == NULL) + reg_info = reg_ctx->GetRegisterInfoByName(alt_name); + if (reg_info) { + lldb_private::RegisterValue reg_value; + if (reg_ctx->ReadRegister(reg_info, reg_value)) { + if (reg_info->byte_size >= reg_byte_size) + data.Write(reg_value.GetBytes(), reg_byte_size); + else { + data.Write(reg_value.GetBytes(), reg_info->byte_size); + for (size_t i = 0, n = reg_byte_size - reg_info->byte_size; i < n; + ++i) data.PutChar(0); + } return reg_byte_size; + } } - - static bool - Create_LC_THREAD (Thread *thread, Stream &data) - { - RegisterContextSP reg_ctx_sp (thread->GetRegisterContext()); - if (reg_ctx_sp) - { - RegisterContext *reg_ctx = reg_ctx_sp.get(); - - data.PutHex32 (GPRRegSet); // Flavor - data.PutHex32 (GPRWordCount); - WriteRegister (reg_ctx, "rax", NULL, 8, data); - WriteRegister (reg_ctx, "rbx", NULL, 8, data); - WriteRegister (reg_ctx, "rcx", NULL, 8, data); - WriteRegister (reg_ctx, "rdx", NULL, 8, data); - WriteRegister (reg_ctx, "rdi", NULL, 8, data); - WriteRegister (reg_ctx, "rsi", NULL, 8, data); - WriteRegister (reg_ctx, "rbp", NULL, 8, data); - WriteRegister (reg_ctx, "rsp", NULL, 8, data); - WriteRegister (reg_ctx, "r8", NULL, 8, data); - WriteRegister (reg_ctx, "r9", NULL, 8, data); - WriteRegister (reg_ctx, "r10", NULL, 8, data); - WriteRegister (reg_ctx, "r11", NULL, 8, data); - WriteRegister (reg_ctx, "r12", NULL, 8, data); - WriteRegister (reg_ctx, "r13", NULL, 8, data); - WriteRegister (reg_ctx, "r14", NULL, 8, data); - WriteRegister (reg_ctx, "r15", NULL, 8, data); - WriteRegister (reg_ctx, "rip", NULL, 8, data); - WriteRegister (reg_ctx, "rflags", NULL, 8, data); - WriteRegister (reg_ctx, "cs", NULL, 8, data); - WriteRegister (reg_ctx, "fs", NULL, 8, data); - WriteRegister (reg_ctx, "gs", NULL, 8, data); - -// // Write out the FPU registers -// const size_t fpu_byte_size = sizeof(FPU); -// size_t bytes_written = 0; -// data.PutHex32 (FPURegSet); -// data.PutHex32 (fpu_byte_size/sizeof(uint64_t)); -// bytes_written += data.PutHex32(0); // uint32_t pad[0] -// bytes_written += data.PutHex32(0); // uint32_t pad[1] -// bytes_written += WriteRegister (reg_ctx, "fcw", "fctrl", 2, data); // uint16_t fcw; // "fctrl" -// bytes_written += WriteRegister (reg_ctx, "fsw" , "fstat", 2, data); // uint16_t fsw; // "fstat" -// bytes_written += WriteRegister (reg_ctx, "ftw" , "ftag", 1, data); // uint8_t ftw; // "ftag" -// bytes_written += data.PutHex8 (0); // uint8_t pad1; -// bytes_written += WriteRegister (reg_ctx, "fop" , NULL, 2, data); // uint16_t fop; // "fop" -// bytes_written += WriteRegister (reg_ctx, "fioff", "ip", 4, data); // uint32_t ip; // "fioff" -// bytes_written += WriteRegister (reg_ctx, "fiseg", NULL, 2, data); // uint16_t cs; // "fiseg" -// bytes_written += data.PutHex16 (0); // uint16_t pad2; -// bytes_written += WriteRegister (reg_ctx, "dp", "fooff" , 4, data); // uint32_t dp; // "fooff" -// bytes_written += WriteRegister (reg_ctx, "foseg", NULL, 2, data); // uint16_t ds; // "foseg" -// bytes_written += data.PutHex16 (0); // uint16_t pad3; -// bytes_written += WriteRegister (reg_ctx, "mxcsr", NULL, 4, data); // uint32_t mxcsr; -// bytes_written += WriteRegister (reg_ctx, "mxcsrmask", NULL, 4, data);// uint32_t mxcsrmask; -// bytes_written += WriteRegister (reg_ctx, "stmm0", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm1", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm2", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm3", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm4", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm5", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm6", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "stmm7", NULL, sizeof(MMSReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm0" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm1" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm2" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm3" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm4" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm5" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm6" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm7" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm8" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm9" , NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm10", NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm11", NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm12", NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm13", NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm14", NULL, sizeof(XMMReg), data); -// bytes_written += WriteRegister (reg_ctx, "xmm15", NULL, sizeof(XMMReg), data); -// -// // Fill rest with zeros -// for (size_t i=0, n = fpu_byte_size - bytes_written; i<n; ++ i) -// data.PutChar(0); - - // Write out the EXC registers - data.PutHex32 (EXCRegSet); - data.PutHex32 (EXCWordCount); - WriteRegister (reg_ctx, "trapno", NULL, 4, data); - WriteRegister (reg_ctx, "err", NULL, 4, data); - WriteRegister (reg_ctx, "faultvaddr", NULL, 8, data); - return true; - } - return false; + // Just write zeros if all else fails + for (size_t i = 0; i < reg_byte_size; ++i) + data.PutChar(0); + return reg_byte_size; + } + + static bool Create_LC_THREAD(Thread *thread, Stream &data) { + RegisterContextSP reg_ctx_sp(thread->GetRegisterContext()); + if (reg_ctx_sp) { + RegisterContext *reg_ctx = reg_ctx_sp.get(); + + data.PutHex32(GPRRegSet); // Flavor + data.PutHex32(GPRWordCount); + WriteRegister(reg_ctx, "rax", NULL, 8, data); + WriteRegister(reg_ctx, "rbx", NULL, 8, data); + WriteRegister(reg_ctx, "rcx", NULL, 8, data); + WriteRegister(reg_ctx, "rdx", NULL, 8, data); + WriteRegister(reg_ctx, "rdi", NULL, 8, data); + WriteRegister(reg_ctx, "rsi", NULL, 8, data); + WriteRegister(reg_ctx, "rbp", NULL, 8, data); + WriteRegister(reg_ctx, "rsp", NULL, 8, data); + WriteRegister(reg_ctx, "r8", NULL, 8, data); + WriteRegister(reg_ctx, "r9", NULL, 8, data); + WriteRegister(reg_ctx, "r10", NULL, 8, data); + WriteRegister(reg_ctx, "r11", NULL, 8, data); + WriteRegister(reg_ctx, "r12", NULL, 8, data); + WriteRegister(reg_ctx, "r13", NULL, 8, data); + WriteRegister(reg_ctx, "r14", NULL, 8, data); + WriteRegister(reg_ctx, "r15", NULL, 8, data); + WriteRegister(reg_ctx, "rip", NULL, 8, data); + WriteRegister(reg_ctx, "rflags", NULL, 8, data); + WriteRegister(reg_ctx, "cs", NULL, 8, data); + WriteRegister(reg_ctx, "fs", NULL, 8, data); + WriteRegister(reg_ctx, "gs", NULL, 8, data); + + // // Write out the FPU registers + // const size_t fpu_byte_size = sizeof(FPU); + // size_t bytes_written = 0; + // data.PutHex32 (FPURegSet); + // data.PutHex32 (fpu_byte_size/sizeof(uint64_t)); + // bytes_written += data.PutHex32(0); // uint32_t pad[0] + // bytes_written += data.PutHex32(0); // uint32_t pad[1] + // bytes_written += WriteRegister (reg_ctx, "fcw", "fctrl", 2, + // data); // uint16_t fcw; // "fctrl" + // bytes_written += WriteRegister (reg_ctx, "fsw" , "fstat", 2, + // data); // uint16_t fsw; // "fstat" + // bytes_written += WriteRegister (reg_ctx, "ftw" , "ftag", 1, + // data); // uint8_t ftw; // "ftag" + // bytes_written += data.PutHex8 (0); // uint8_t pad1; + // bytes_written += WriteRegister (reg_ctx, "fop" , NULL, 2, + // data); // uint16_t fop; // "fop" + // bytes_written += WriteRegister (reg_ctx, "fioff", "ip", 4, + // data); // uint32_t ip; // "fioff" + // bytes_written += WriteRegister (reg_ctx, "fiseg", NULL, 2, + // data); // uint16_t cs; // "fiseg" + // bytes_written += data.PutHex16 (0); // uint16_t pad2; + // bytes_written += WriteRegister (reg_ctx, "dp", "fooff" , 4, + // data); // uint32_t dp; // "fooff" + // bytes_written += WriteRegister (reg_ctx, "foseg", NULL, 2, + // data); // uint16_t ds; // "foseg" + // bytes_written += data.PutHex16 (0); // uint16_t pad3; + // bytes_written += WriteRegister (reg_ctx, "mxcsr", NULL, 4, + // data); // uint32_t mxcsr; + // bytes_written += WriteRegister (reg_ctx, "mxcsrmask", NULL, + // 4, data);// uint32_t mxcsrmask; + // bytes_written += WriteRegister (reg_ctx, "stmm0", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm1", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm2", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm3", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm4", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm5", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm6", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "stmm7", NULL, + // sizeof(MMSReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm0" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm1" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm2" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm3" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm4" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm5" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm6" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm7" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm8" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm9" , NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm10", NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm11", NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm12", NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm13", NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm14", NULL, + // sizeof(XMMReg), data); + // bytes_written += WriteRegister (reg_ctx, "xmm15", NULL, + // sizeof(XMMReg), data); + // + // // Fill rest with zeros + // for (size_t i=0, n = fpu_byte_size - bytes_written; i<n; ++ + // i) + // data.PutChar(0); + + // Write out the EXC registers + data.PutHex32(EXCRegSet); + data.PutHex32(EXCWordCount); + WriteRegister(reg_ctx, "trapno", NULL, 4, data); + WriteRegister(reg_ctx, "err", NULL, 4, data); + WriteRegister(reg_ctx, "faultvaddr", NULL, 8, data); + return true; } + return false; + } protected: - int - DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override - { - return 0; - } + int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override { return 0; } - int - DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override - { - return 0; - } + int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override { return 0; } - int - DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override - { - return 0; - } + int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override { return 0; } - int - DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override - { - return 0; - } + int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override { + return 0; + } - int - DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override - { - return 0; - } + int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override { + return 0; + } - int - DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override - { - return 0; - } + int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override { + return 0; + } }; -class RegisterContextDarwin_i386_Mach : public RegisterContextDarwin_i386 -{ +class RegisterContextDarwin_i386_Mach : public RegisterContextDarwin_i386 { public: - RegisterContextDarwin_i386_Mach (lldb_private::Thread &thread, const DataExtractor &data) : - RegisterContextDarwin_i386 (thread, 0) - { - SetRegisterDataFrom_LC_THREAD (data); - } - - void - InvalidateAllRegisters() override - { - // Do nothing... registers are always valid... - } + RegisterContextDarwin_i386_Mach(lldb_private::Thread &thread, + const DataExtractor &data) + : RegisterContextDarwin_i386(thread, 0) { + SetRegisterDataFrom_LC_THREAD(data); + } - void - SetRegisterDataFrom_LC_THREAD (const DataExtractor &data) - { - lldb::offset_t offset = 0; - SetError (GPRRegSet, Read, -1); - SetError (FPURegSet, Read, -1); - SetError (EXCRegSet, Read, -1); - bool done = false; - - while (!done) - { - int flavor = data.GetU32 (&offset); - if (flavor == 0) - done = true; - else - { - uint32_t i; - uint32_t count = data.GetU32 (&offset); - switch (flavor) - { - case GPRRegSet: - for (i=0; i<count; ++i) - (&gpr.eax)[i] = data.GetU32(&offset); - SetError (GPRRegSet, Read, 0); - done = true; + void InvalidateAllRegisters() override { + // Do nothing... registers are always valid... + } - break; - case FPURegSet: - // TODO: fill in FPU regs.... - //SetError (FPURegSet, Read, -1); - done = true; - - break; - case EXCRegSet: - exc.trapno = data.GetU32(&offset); - exc.err = data.GetU32(&offset); - exc.faultvaddr = data.GetU32(&offset); - SetError (EXCRegSet, Read, 0); - done = true; - break; - case 7: - case 8: - case 9: - // fancy flavors that encapsulate of the above - // flavors... - break; + void SetRegisterDataFrom_LC_THREAD(const DataExtractor &data) { + lldb::offset_t offset = 0; + SetError(GPRRegSet, Read, -1); + SetError(FPURegSet, Read, -1); + SetError(EXCRegSet, Read, -1); + bool done = false; + + while (!done) { + int flavor = data.GetU32(&offset); + if (flavor == 0) + done = true; + else { + uint32_t i; + uint32_t count = data.GetU32(&offset); + switch (flavor) { + case GPRRegSet: + for (i = 0; i < count; ++i) + (&gpr.eax)[i] = data.GetU32(&offset); + SetError(GPRRegSet, Read, 0); + done = true; + + break; + case FPURegSet: + // TODO: fill in FPU regs.... + // SetError (FPURegSet, Read, -1); + done = true; + + break; + case EXCRegSet: + exc.trapno = data.GetU32(&offset); + exc.err = data.GetU32(&offset); + exc.faultvaddr = data.GetU32(&offset); + SetError(EXCRegSet, Read, 0); + done = true; + break; + case 7: + case 8: + case 9: + // fancy flavors that encapsulate of the above + // flavors... + break; - default: - done = true; - break; - } - } + default: + done = true; + break; } + } } - - static size_t - WriteRegister (RegisterContext *reg_ctx, const char *name, const char *alt_name, size_t reg_byte_size, Stream &data) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); - if (reg_info == NULL) - reg_info = reg_ctx->GetRegisterInfoByName(alt_name); - if (reg_info) - { - lldb_private::RegisterValue reg_value; - if (reg_ctx->ReadRegister(reg_info, reg_value)) - { - if (reg_info->byte_size >= reg_byte_size) - data.Write(reg_value.GetBytes(), reg_byte_size); - else - { - data.Write(reg_value.GetBytes(), reg_info->byte_size); - for (size_t i=0, n = reg_byte_size - reg_info->byte_size; i<n; ++ i) - data.PutChar(0); - } - return reg_byte_size; - } - } - // Just write zeros if all else fails - for (size_t i=0; i<reg_byte_size; ++ i) + } + + static size_t WriteRegister(RegisterContext *reg_ctx, const char *name, + const char *alt_name, size_t reg_byte_size, + Stream &data) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); + if (reg_info == NULL) + reg_info = reg_ctx->GetRegisterInfoByName(alt_name); + if (reg_info) { + lldb_private::RegisterValue reg_value; + if (reg_ctx->ReadRegister(reg_info, reg_value)) { + if (reg_info->byte_size >= reg_byte_size) + data.Write(reg_value.GetBytes(), reg_byte_size); + else { + data.Write(reg_value.GetBytes(), reg_info->byte_size); + for (size_t i = 0, n = reg_byte_size - reg_info->byte_size; i < n; + ++i) data.PutChar(0); + } return reg_byte_size; + } } - - static bool - Create_LC_THREAD (Thread *thread, Stream &data) - { - RegisterContextSP reg_ctx_sp (thread->GetRegisterContext()); - if (reg_ctx_sp) - { - RegisterContext *reg_ctx = reg_ctx_sp.get(); - - data.PutHex32 (GPRRegSet); // Flavor - data.PutHex32 (GPRWordCount); - WriteRegister (reg_ctx, "eax", NULL, 4, data); - WriteRegister (reg_ctx, "ebx", NULL, 4, data); - WriteRegister (reg_ctx, "ecx", NULL, 4, data); - WriteRegister (reg_ctx, "edx", NULL, 4, data); - WriteRegister (reg_ctx, "edi", NULL, 4, data); - WriteRegister (reg_ctx, "esi", NULL, 4, data); - WriteRegister (reg_ctx, "ebp", NULL, 4, data); - WriteRegister (reg_ctx, "esp", NULL, 4, data); - WriteRegister (reg_ctx, "ss", NULL, 4, data); - WriteRegister (reg_ctx, "eflags", NULL, 4, data); - WriteRegister (reg_ctx, "eip", NULL, 4, data); - WriteRegister (reg_ctx, "cs", NULL, 4, data); - WriteRegister (reg_ctx, "ds", NULL, 4, data); - WriteRegister (reg_ctx, "es", NULL, 4, data); - WriteRegister (reg_ctx, "fs", NULL, 4, data); - WriteRegister (reg_ctx, "gs", NULL, 4, data); - - // Write out the EXC registers - data.PutHex32 (EXCRegSet); - data.PutHex32 (EXCWordCount); - WriteRegister (reg_ctx, "trapno", NULL, 4, data); - WriteRegister (reg_ctx, "err", NULL, 4, data); - WriteRegister (reg_ctx, "faultvaddr", NULL, 4, data); - return true; - } - return false; + // Just write zeros if all else fails + for (size_t i = 0; i < reg_byte_size; ++i) + data.PutChar(0); + return reg_byte_size; + } + + static bool Create_LC_THREAD(Thread *thread, Stream &data) { + RegisterContextSP reg_ctx_sp(thread->GetRegisterContext()); + if (reg_ctx_sp) { + RegisterContext *reg_ctx = reg_ctx_sp.get(); + + data.PutHex32(GPRRegSet); // Flavor + data.PutHex32(GPRWordCount); + WriteRegister(reg_ctx, "eax", NULL, 4, data); + WriteRegister(reg_ctx, "ebx", NULL, 4, data); + WriteRegister(reg_ctx, "ecx", NULL, 4, data); + WriteRegister(reg_ctx, "edx", NULL, 4, data); + WriteRegister(reg_ctx, "edi", NULL, 4, data); + WriteRegister(reg_ctx, "esi", NULL, 4, data); + WriteRegister(reg_ctx, "ebp", NULL, 4, data); + WriteRegister(reg_ctx, "esp", NULL, 4, data); + WriteRegister(reg_ctx, "ss", NULL, 4, data); + WriteRegister(reg_ctx, "eflags", NULL, 4, data); + WriteRegister(reg_ctx, "eip", NULL, 4, data); + WriteRegister(reg_ctx, "cs", NULL, 4, data); + WriteRegister(reg_ctx, "ds", NULL, 4, data); + WriteRegister(reg_ctx, "es", NULL, 4, data); + WriteRegister(reg_ctx, "fs", NULL, 4, data); + WriteRegister(reg_ctx, "gs", NULL, 4, data); + + // Write out the EXC registers + data.PutHex32(EXCRegSet); + data.PutHex32(EXCWordCount); + WriteRegister(reg_ctx, "trapno", NULL, 4, data); + WriteRegister(reg_ctx, "err", NULL, 4, data); + WriteRegister(reg_ctx, "faultvaddr", NULL, 4, data); + return true; } + return false; + } protected: - int - DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override - { - return 0; - } + int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override { return 0; } - int - DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override - { - return 0; - } + int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override { return 0; } - int - DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override - { - return 0; - } + int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override { return 0; } - int - DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override - { - return 0; - } + int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override { + return 0; + } - int - DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override - { - return 0; - } + int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override { + return 0; + } - int - DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override - { - return 0; - } + int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override { + return 0; + } }; -class RegisterContextDarwin_arm_Mach : public RegisterContextDarwin_arm -{ +class RegisterContextDarwin_arm_Mach : public RegisterContextDarwin_arm { public: - RegisterContextDarwin_arm_Mach (lldb_private::Thread &thread, const DataExtractor &data) : - RegisterContextDarwin_arm (thread, 0) - { - SetRegisterDataFrom_LC_THREAD (data); - } - - void - InvalidateAllRegisters() override - { - // Do nothing... registers are always valid... - } - - void - SetRegisterDataFrom_LC_THREAD (const DataExtractor &data) - { - lldb::offset_t offset = 0; - SetError (GPRRegSet, Read, -1); - SetError (FPURegSet, Read, -1); - SetError (EXCRegSet, Read, -1); - bool done = false; - - while (!done) - { - int flavor = data.GetU32 (&offset); - uint32_t count = data.GetU32 (&offset); - lldb::offset_t next_thread_state = offset + (count * 4); - switch (flavor) - { - case GPRAltRegSet: - case GPRRegSet: - for (uint32_t i=0; i<count; ++i) - { - gpr.r[i] = data.GetU32(&offset); - } - - // Note that gpr.cpsr is also copied by the above loop; this loop technically extends - // one element past the end of the gpr.r[] array. - - SetError (GPRRegSet, Read, 0); - offset = next_thread_state; - break; + RegisterContextDarwin_arm_Mach(lldb_private::Thread &thread, + const DataExtractor &data) + : RegisterContextDarwin_arm(thread, 0) { + SetRegisterDataFrom_LC_THREAD(data); + } - case FPURegSet: - { - uint8_t *fpu_reg_buf = (uint8_t*) &fpu.floats.s[0]; - const int fpu_reg_buf_size = sizeof (fpu.floats); - if (data.ExtractBytes (offset, fpu_reg_buf_size, eByteOrderLittle, fpu_reg_buf) == fpu_reg_buf_size) - { - offset += fpu_reg_buf_size; - fpu.fpscr = data.GetU32(&offset); - SetError (FPURegSet, Read, 0); - } - else - { - done = true; - } - } - offset = next_thread_state; - break; + void InvalidateAllRegisters() override { + // Do nothing... registers are always valid... + } - case EXCRegSet: - if (count == 3) - { - exc.exception = data.GetU32(&offset); - exc.fsr = data.GetU32(&offset); - exc.far = data.GetU32(&offset); - SetError (EXCRegSet, Read, 0); - } - done = true; - offset = next_thread_state; - break; - - // Unknown register set flavor, stop trying to parse. - default: - done = true; - } + void SetRegisterDataFrom_LC_THREAD(const DataExtractor &data) { + lldb::offset_t offset = 0; + SetError(GPRRegSet, Read, -1); + SetError(FPURegSet, Read, -1); + SetError(EXCRegSet, Read, -1); + bool done = false; + + while (!done) { + int flavor = data.GetU32(&offset); + uint32_t count = data.GetU32(&offset); + lldb::offset_t next_thread_state = offset + (count * 4); + switch (flavor) { + case GPRAltRegSet: + case GPRRegSet: + for (uint32_t i = 0; i < count; ++i) { + gpr.r[i] = data.GetU32(&offset); } - } - static size_t - WriteRegister (RegisterContext *reg_ctx, const char *name, const char *alt_name, size_t reg_byte_size, Stream &data) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); - if (reg_info == NULL) - reg_info = reg_ctx->GetRegisterInfoByName(alt_name); - if (reg_info) - { - lldb_private::RegisterValue reg_value; - if (reg_ctx->ReadRegister(reg_info, reg_value)) - { - if (reg_info->byte_size >= reg_byte_size) - data.Write(reg_value.GetBytes(), reg_byte_size); - else - { - data.Write(reg_value.GetBytes(), reg_info->byte_size); - for (size_t i=0, n = reg_byte_size - reg_info->byte_size; i<n; ++ i) - data.PutChar(0); - } - return reg_byte_size; - } + // Note that gpr.cpsr is also copied by the above loop; this loop + // technically extends + // one element past the end of the gpr.r[] array. + + SetError(GPRRegSet, Read, 0); + offset = next_thread_state; + break; + + case FPURegSet: { + uint8_t *fpu_reg_buf = (uint8_t *)&fpu.floats.s[0]; + const int fpu_reg_buf_size = sizeof(fpu.floats); + if (data.ExtractBytes(offset, fpu_reg_buf_size, eByteOrderLittle, + fpu_reg_buf) == fpu_reg_buf_size) { + offset += fpu_reg_buf_size; + fpu.fpscr = data.GetU32(&offset); + SetError(FPURegSet, Read, 0); + } else { + done = true; + } + } + offset = next_thread_state; + break; + + case EXCRegSet: + if (count == 3) { + exc.exception = data.GetU32(&offset); + exc.fsr = data.GetU32(&offset); + exc.far = data.GetU32(&offset); + SetError(EXCRegSet, Read, 0); } - // Just write zeros if all else fails - for (size_t i=0; i<reg_byte_size; ++ i) + done = true; + offset = next_thread_state; + break; + + // Unknown register set flavor, stop trying to parse. + default: + done = true; + } + } + } + + static size_t WriteRegister(RegisterContext *reg_ctx, const char *name, + const char *alt_name, size_t reg_byte_size, + Stream &data) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); + if (reg_info == NULL) + reg_info = reg_ctx->GetRegisterInfoByName(alt_name); + if (reg_info) { + lldb_private::RegisterValue reg_value; + if (reg_ctx->ReadRegister(reg_info, reg_value)) { + if (reg_info->byte_size >= reg_byte_size) + data.Write(reg_value.GetBytes(), reg_byte_size); + else { + data.Write(reg_value.GetBytes(), reg_info->byte_size); + for (size_t i = 0, n = reg_byte_size - reg_info->byte_size; i < n; + ++i) data.PutChar(0); + } return reg_byte_size; + } } - - static bool - Create_LC_THREAD (Thread *thread, Stream &data) - { - RegisterContextSP reg_ctx_sp (thread->GetRegisterContext()); - if (reg_ctx_sp) - { - RegisterContext *reg_ctx = reg_ctx_sp.get(); - - data.PutHex32 (GPRRegSet); // Flavor - data.PutHex32 (GPRWordCount); - WriteRegister (reg_ctx, "r0", NULL, 4, data); - WriteRegister (reg_ctx, "r1", NULL, 4, data); - WriteRegister (reg_ctx, "r2", NULL, 4, data); - WriteRegister (reg_ctx, "r3", NULL, 4, data); - WriteRegister (reg_ctx, "r4", NULL, 4, data); - WriteRegister (reg_ctx, "r5", NULL, 4, data); - WriteRegister (reg_ctx, "r6", NULL, 4, data); - WriteRegister (reg_ctx, "r7", NULL, 4, data); - WriteRegister (reg_ctx, "r8", NULL, 4, data); - WriteRegister (reg_ctx, "r9", NULL, 4, data); - WriteRegister (reg_ctx, "r10", NULL, 4, data); - WriteRegister (reg_ctx, "r11", NULL, 4, data); - WriteRegister (reg_ctx, "r12", NULL, 4, data); - WriteRegister (reg_ctx, "sp", NULL, 4, data); - WriteRegister (reg_ctx, "lr", NULL, 4, data); - WriteRegister (reg_ctx, "pc", NULL, 4, data); - WriteRegister (reg_ctx, "cpsr", NULL, 4, data); - - // Write out the EXC registers -// data.PutHex32 (EXCRegSet); -// data.PutHex32 (EXCWordCount); -// WriteRegister (reg_ctx, "exception", NULL, 4, data); -// WriteRegister (reg_ctx, "fsr", NULL, 4, data); -// WriteRegister (reg_ctx, "far", NULL, 4, data); - return true; - } - return false; + // Just write zeros if all else fails + for (size_t i = 0; i < reg_byte_size; ++i) + data.PutChar(0); + return reg_byte_size; + } + + static bool Create_LC_THREAD(Thread *thread, Stream &data) { + RegisterContextSP reg_ctx_sp(thread->GetRegisterContext()); + if (reg_ctx_sp) { + RegisterContext *reg_ctx = reg_ctx_sp.get(); + + data.PutHex32(GPRRegSet); // Flavor + data.PutHex32(GPRWordCount); + WriteRegister(reg_ctx, "r0", NULL, 4, data); + WriteRegister(reg_ctx, "r1", NULL, 4, data); + WriteRegister(reg_ctx, "r2", NULL, 4, data); + WriteRegister(reg_ctx, "r3", NULL, 4, data); + WriteRegister(reg_ctx, "r4", NULL, 4, data); + WriteRegister(reg_ctx, "r5", NULL, 4, data); + WriteRegister(reg_ctx, "r6", NULL, 4, data); + WriteRegister(reg_ctx, "r7", NULL, 4, data); + WriteRegister(reg_ctx, "r8", NULL, 4, data); + WriteRegister(reg_ctx, "r9", NULL, 4, data); + WriteRegister(reg_ctx, "r10", NULL, 4, data); + WriteRegister(reg_ctx, "r11", NULL, 4, data); + WriteRegister(reg_ctx, "r12", NULL, 4, data); + WriteRegister(reg_ctx, "sp", NULL, 4, data); + WriteRegister(reg_ctx, "lr", NULL, 4, data); + WriteRegister(reg_ctx, "pc", NULL, 4, data); + WriteRegister(reg_ctx, "cpsr", NULL, 4, data); + + // Write out the EXC registers + // data.PutHex32 (EXCRegSet); + // data.PutHex32 (EXCWordCount); + // WriteRegister (reg_ctx, "exception", NULL, 4, data); + // WriteRegister (reg_ctx, "fsr", NULL, 4, data); + // WriteRegister (reg_ctx, "far", NULL, 4, data); + return true; } + return false; + } protected: - int - DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override - { - return -1; - } + int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override { return -1; } - int - DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override - { - return -1; - } + int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override { return -1; } - int - DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override - { - return -1; - } + int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override { return -1; } - int - DoReadDBG(lldb::tid_t tid, int flavor, DBG &dbg) override - { - return -1; - } + int DoReadDBG(lldb::tid_t tid, int flavor, DBG &dbg) override { return -1; } - int - DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override - { - return 0; - } + int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override { + return 0; + } - int - DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override - { - return 0; - } + int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override { + return 0; + } - int - DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override - { - return 0; - } + int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override { + return 0; + } - int - DoWriteDBG(lldb::tid_t tid, int flavor, const DBG &dbg) override - { - return -1; - } + int DoWriteDBG(lldb::tid_t tid, int flavor, const DBG &dbg) override { + return -1; + } }; -class RegisterContextDarwin_arm64_Mach : public RegisterContextDarwin_arm64 -{ +class RegisterContextDarwin_arm64_Mach : public RegisterContextDarwin_arm64 { public: - RegisterContextDarwin_arm64_Mach (lldb_private::Thread &thread, const DataExtractor &data) : - RegisterContextDarwin_arm64 (thread, 0) - { - SetRegisterDataFrom_LC_THREAD (data); - } - - void - InvalidateAllRegisters() override - { - // Do nothing... registers are always valid... - } - - void - SetRegisterDataFrom_LC_THREAD (const DataExtractor &data) - { - lldb::offset_t offset = 0; - SetError (GPRRegSet, Read, -1); - SetError (FPURegSet, Read, -1); - SetError (EXCRegSet, Read, -1); - bool done = false; - while (!done) - { - int flavor = data.GetU32 (&offset); - uint32_t count = data.GetU32 (&offset); - lldb::offset_t next_thread_state = offset + (count * 4); - switch (flavor) - { - case GPRRegSet: - // x0-x29 + fp + lr + sp + pc (== 33 64-bit registers) plus cpsr (1 32-bit register) - if (count >= (33 * 2) + 1) - { - for (uint32_t i=0; i<33; ++i) - gpr.x[i] = data.GetU64(&offset); - gpr.cpsr = data.GetU32(&offset); - SetError (GPRRegSet, Read, 0); - } - offset = next_thread_state; - break; - case FPURegSet: - { - uint8_t *fpu_reg_buf = (uint8_t*) &fpu.v[0]; - const int fpu_reg_buf_size = sizeof (fpu); - if (fpu_reg_buf_size == count - && data.ExtractBytes (offset, fpu_reg_buf_size, eByteOrderLittle, fpu_reg_buf) == fpu_reg_buf_size) - { - SetError (FPURegSet, Read, 0); - } - else - { - done = true; - } - } - offset = next_thread_state; - break; - case EXCRegSet: - if (count == 4) - { - exc.far = data.GetU64(&offset); - exc.esr = data.GetU32(&offset); - exc.exception = data.GetU32(&offset); - SetError (EXCRegSet, Read, 0); - } - offset = next_thread_state; - break; - default: - done = true; - break; - } - } - } + RegisterContextDarwin_arm64_Mach(lldb_private::Thread &thread, + const DataExtractor &data) + : RegisterContextDarwin_arm64(thread, 0) { + SetRegisterDataFrom_LC_THREAD(data); + } - static size_t - WriteRegister (RegisterContext *reg_ctx, const char *name, const char *alt_name, size_t reg_byte_size, Stream &data) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); - if (reg_info == NULL) - reg_info = reg_ctx->GetRegisterInfoByName(alt_name); - if (reg_info) - { - lldb_private::RegisterValue reg_value; - if (reg_ctx->ReadRegister(reg_info, reg_value)) - { - if (reg_info->byte_size >= reg_byte_size) - data.Write(reg_value.GetBytes(), reg_byte_size); - else - { - data.Write(reg_value.GetBytes(), reg_info->byte_size); - for (size_t i=0, n = reg_byte_size - reg_info->byte_size; i<n; ++ i) - data.PutChar(0); - } - return reg_byte_size; - } + void InvalidateAllRegisters() override { + // Do nothing... registers are always valid... + } + + void SetRegisterDataFrom_LC_THREAD(const DataExtractor &data) { + lldb::offset_t offset = 0; + SetError(GPRRegSet, Read, -1); + SetError(FPURegSet, Read, -1); + SetError(EXCRegSet, Read, -1); + bool done = false; + while (!done) { + int flavor = data.GetU32(&offset); + uint32_t count = data.GetU32(&offset); + lldb::offset_t next_thread_state = offset + (count * 4); + switch (flavor) { + case GPRRegSet: + // x0-x29 + fp + lr + sp + pc (== 33 64-bit registers) plus cpsr (1 + // 32-bit register) + if (count >= (33 * 2) + 1) { + for (uint32_t i = 0; i < 29; ++i) + gpr.x[i] = data.GetU64(&offset); + gpr.fp = data.GetU64(&offset); + gpr.lr = data.GetU64(&offset); + gpr.sp = data.GetU64(&offset); + gpr.pc = data.GetU64(&offset); + gpr.cpsr = data.GetU32(&offset); + SetError(GPRRegSet, Read, 0); + } + offset = next_thread_state; + break; + case FPURegSet: { + uint8_t *fpu_reg_buf = (uint8_t *)&fpu.v[0]; + const int fpu_reg_buf_size = sizeof(fpu); + if (fpu_reg_buf_size == count && + data.ExtractBytes(offset, fpu_reg_buf_size, eByteOrderLittle, + fpu_reg_buf) == fpu_reg_buf_size) { + SetError(FPURegSet, Read, 0); + } else { + done = true; + } + } + offset = next_thread_state; + break; + case EXCRegSet: + if (count == 4) { + exc.far = data.GetU64(&offset); + exc.esr = data.GetU32(&offset); + exc.exception = data.GetU32(&offset); + SetError(EXCRegSet, Read, 0); } - // Just write zeros if all else fails - for (size_t i=0; i<reg_byte_size; ++ i) + offset = next_thread_state; + break; + default: + done = true; + break; + } + } + } + + static size_t WriteRegister(RegisterContext *reg_ctx, const char *name, + const char *alt_name, size_t reg_byte_size, + Stream &data) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(name); + if (reg_info == NULL) + reg_info = reg_ctx->GetRegisterInfoByName(alt_name); + if (reg_info) { + lldb_private::RegisterValue reg_value; + if (reg_ctx->ReadRegister(reg_info, reg_value)) { + if (reg_info->byte_size >= reg_byte_size) + data.Write(reg_value.GetBytes(), reg_byte_size); + else { + data.Write(reg_value.GetBytes(), reg_info->byte_size); + for (size_t i = 0, n = reg_byte_size - reg_info->byte_size; i < n; + ++i) data.PutChar(0); + } return reg_byte_size; + } } - - static bool - Create_LC_THREAD (Thread *thread, Stream &data) - { - RegisterContextSP reg_ctx_sp (thread->GetRegisterContext()); - if (reg_ctx_sp) - { - RegisterContext *reg_ctx = reg_ctx_sp.get(); - - data.PutHex32 (GPRRegSet); // Flavor - data.PutHex32 (GPRWordCount); - WriteRegister (reg_ctx, "x0", NULL, 8, data); - WriteRegister (reg_ctx, "x1", NULL, 8, data); - WriteRegister (reg_ctx, "x2", NULL, 8, data); - WriteRegister (reg_ctx, "x3", NULL, 8, data); - WriteRegister (reg_ctx, "x4", NULL, 8, data); - WriteRegister (reg_ctx, "x5", NULL, 8, data); - WriteRegister (reg_ctx, "x6", NULL, 8, data); - WriteRegister (reg_ctx, "x7", NULL, 8, data); - WriteRegister (reg_ctx, "x8", NULL, 8, data); - WriteRegister (reg_ctx, "x9", NULL, 8, data); - WriteRegister (reg_ctx, "x10", NULL, 8, data); - WriteRegister (reg_ctx, "x11", NULL, 8, data); - WriteRegister (reg_ctx, "x12", NULL, 8, data); - WriteRegister (reg_ctx, "x13", NULL, 8, data); - WriteRegister (reg_ctx, "x14", NULL, 8, data); - WriteRegister (reg_ctx, "x15", NULL, 8, data); - WriteRegister (reg_ctx, "x16", NULL, 8, data); - WriteRegister (reg_ctx, "x17", NULL, 8, data); - WriteRegister (reg_ctx, "x18", NULL, 8, data); - WriteRegister (reg_ctx, "x19", NULL, 8, data); - WriteRegister (reg_ctx, "x20", NULL, 8, data); - WriteRegister (reg_ctx, "x21", NULL, 8, data); - WriteRegister (reg_ctx, "x22", NULL, 8, data); - WriteRegister (reg_ctx, "x23", NULL, 8, data); - WriteRegister (reg_ctx, "x24", NULL, 8, data); - WriteRegister (reg_ctx, "x25", NULL, 8, data); - WriteRegister (reg_ctx, "x26", NULL, 8, data); - WriteRegister (reg_ctx, "x27", NULL, 8, data); - WriteRegister (reg_ctx, "x28", NULL, 8, data); - WriteRegister (reg_ctx, "fp", NULL, 8, data); - WriteRegister (reg_ctx, "lr", NULL, 8, data); - WriteRegister (reg_ctx, "sp", NULL, 8, data); - WriteRegister (reg_ctx, "pc", NULL, 8, data); - WriteRegister (reg_ctx, "cpsr", NULL, 4, data); - - // Write out the EXC registers -// data.PutHex32 (EXCRegSet); -// data.PutHex32 (EXCWordCount); -// WriteRegister (reg_ctx, "far", NULL, 8, data); -// WriteRegister (reg_ctx, "esr", NULL, 4, data); -// WriteRegister (reg_ctx, "exception", NULL, 4, data); - return true; - } - return false; + // Just write zeros if all else fails + for (size_t i = 0; i < reg_byte_size; ++i) + data.PutChar(0); + return reg_byte_size; + } + + static bool Create_LC_THREAD(Thread *thread, Stream &data) { + RegisterContextSP reg_ctx_sp(thread->GetRegisterContext()); + if (reg_ctx_sp) { + RegisterContext *reg_ctx = reg_ctx_sp.get(); + + data.PutHex32(GPRRegSet); // Flavor + data.PutHex32(GPRWordCount); + WriteRegister(reg_ctx, "x0", NULL, 8, data); + WriteRegister(reg_ctx, "x1", NULL, 8, data); + WriteRegister(reg_ctx, "x2", NULL, 8, data); + WriteRegister(reg_ctx, "x3", NULL, 8, data); + WriteRegister(reg_ctx, "x4", NULL, 8, data); + WriteRegister(reg_ctx, "x5", NULL, 8, data); + WriteRegister(reg_ctx, "x6", NULL, 8, data); + WriteRegister(reg_ctx, "x7", NULL, 8, data); + WriteRegister(reg_ctx, "x8", NULL, 8, data); + WriteRegister(reg_ctx, "x9", NULL, 8, data); + WriteRegister(reg_ctx, "x10", NULL, 8, data); + WriteRegister(reg_ctx, "x11", NULL, 8, data); + WriteRegister(reg_ctx, "x12", NULL, 8, data); + WriteRegister(reg_ctx, "x13", NULL, 8, data); + WriteRegister(reg_ctx, "x14", NULL, 8, data); + WriteRegister(reg_ctx, "x15", NULL, 8, data); + WriteRegister(reg_ctx, "x16", NULL, 8, data); + WriteRegister(reg_ctx, "x17", NULL, 8, data); + WriteRegister(reg_ctx, "x18", NULL, 8, data); + WriteRegister(reg_ctx, "x19", NULL, 8, data); + WriteRegister(reg_ctx, "x20", NULL, 8, data); + WriteRegister(reg_ctx, "x21", NULL, 8, data); + WriteRegister(reg_ctx, "x22", NULL, 8, data); + WriteRegister(reg_ctx, "x23", NULL, 8, data); + WriteRegister(reg_ctx, "x24", NULL, 8, data); + WriteRegister(reg_ctx, "x25", NULL, 8, data); + WriteRegister(reg_ctx, "x26", NULL, 8, data); + WriteRegister(reg_ctx, "x27", NULL, 8, data); + WriteRegister(reg_ctx, "x28", NULL, 8, data); + WriteRegister(reg_ctx, "fp", NULL, 8, data); + WriteRegister(reg_ctx, "lr", NULL, 8, data); + WriteRegister(reg_ctx, "sp", NULL, 8, data); + WriteRegister(reg_ctx, "pc", NULL, 8, data); + WriteRegister(reg_ctx, "cpsr", NULL, 4, data); + + // Write out the EXC registers + // data.PutHex32 (EXCRegSet); + // data.PutHex32 (EXCWordCount); + // WriteRegister (reg_ctx, "far", NULL, 8, data); + // WriteRegister (reg_ctx, "esr", NULL, 4, data); + // WriteRegister (reg_ctx, "exception", NULL, 4, data); + return true; } + return false; + } protected: - int - DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override - { - return -1; - } - - int - DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override - { - return -1; - } - - int - DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override - { - return -1; - } + int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) override { return -1; } - int - DoReadDBG(lldb::tid_t tid, int flavor, DBG &dbg) override - { - return -1; - } - - int - DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override - { - return 0; - } - - int - DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override - { - return 0; - } - - int - DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override - { - return 0; - } - - int - DoWriteDBG(lldb::tid_t tid, int flavor, const DBG &dbg) override - { - return -1; - } -}; + int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) override { return -1; } -static uint32_t -MachHeaderSizeFromMagic(uint32_t magic) -{ - switch (magic) - { - case MH_MAGIC: - case MH_CIGAM: - return sizeof(struct mach_header); - - case MH_MAGIC_64: - case MH_CIGAM_64: - return sizeof(struct mach_header_64); - break; - - default: - break; - } + int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) override { return -1; } + + int DoReadDBG(lldb::tid_t tid, int flavor, DBG &dbg) override { return -1; } + + int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) override { + return 0; + } + + int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) override { + return 0; + } + + int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) override { return 0; + } + + int DoWriteDBG(lldb::tid_t tid, int flavor, const DBG &dbg) override { + return -1; + } +}; + +static uint32_t MachHeaderSizeFromMagic(uint32_t magic) { + switch (magic) { + case MH_MAGIC: + case MH_CIGAM: + return sizeof(struct mach_header); + + case MH_MAGIC_64: + case MH_CIGAM_64: + return sizeof(struct mach_header_64); + break; + + default: + break; + } + return 0; } #define MACHO_NLIST_ARM_SYMBOL_IS_THUMB 0x0008 -void -ObjectFileMachO::Initialize() -{ - PluginManager::RegisterPlugin (GetPluginNameStatic(), - GetPluginDescriptionStatic(), - CreateInstance, - CreateMemoryInstance, - GetModuleSpecifications, - SaveCore); +void ObjectFileMachO::Initialize() { + PluginManager::RegisterPlugin( + GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, + CreateMemoryInstance, GetModuleSpecifications, SaveCore); } -void -ObjectFileMachO::Terminate() -{ - PluginManager::UnregisterPlugin (CreateInstance); +void ObjectFileMachO::Terminate() { + PluginManager::UnregisterPlugin(CreateInstance); } -lldb_private::ConstString -ObjectFileMachO::GetPluginNameStatic() -{ - static ConstString g_name("mach-o"); - return g_name; +lldb_private::ConstString ObjectFileMachO::GetPluginNameStatic() { + static ConstString g_name("mach-o"); + return g_name; } -const char * -ObjectFileMachO::GetPluginDescriptionStatic() -{ - return "Mach-o object file reader (32 and 64 bit)"; +const char *ObjectFileMachO::GetPluginDescriptionStatic() { + return "Mach-o object file reader (32 and 64 bit)"; } -ObjectFile * -ObjectFileMachO::CreateInstance (const lldb::ModuleSP &module_sp, - DataBufferSP& data_sp, - lldb::offset_t data_offset, - const FileSpec* file, - lldb::offset_t file_offset, - lldb::offset_t length) -{ - if (!data_sp) - { - data_sp = file->MemoryMapFileContentsIfLocal(file_offset, length); - data_offset = 0; - } - - if (ObjectFileMachO::MagicBytesMatch(data_sp, data_offset, length)) - { - // Update the data to contain the entire file if it doesn't already - if (data_sp->GetByteSize() < length) - { - data_sp = file->MemoryMapFileContentsIfLocal(file_offset, length); - data_offset = 0; - } - std::unique_ptr<ObjectFile> objfile_ap(new ObjectFileMachO (module_sp, data_sp, data_offset, file, file_offset, length)); - if (objfile_ap.get() && objfile_ap->ParseHeader()) - return objfile_ap.release(); +ObjectFile *ObjectFileMachO::CreateInstance(const lldb::ModuleSP &module_sp, + DataBufferSP &data_sp, + lldb::offset_t data_offset, + const FileSpec *file, + lldb::offset_t file_offset, + lldb::offset_t length) { + if (!data_sp) { + data_sp = file->MemoryMapFileContentsIfLocal(file_offset, length); + data_offset = 0; + } + + if (ObjectFileMachO::MagicBytesMatch(data_sp, data_offset, length)) { + // Update the data to contain the entire file if it doesn't already + if (data_sp->GetByteSize() < length) { + data_sp = file->MemoryMapFileContentsIfLocal(file_offset, length); + data_offset = 0; } - return NULL; + std::unique_ptr<ObjectFile> objfile_ap(new ObjectFileMachO( + module_sp, data_sp, data_offset, file, file_offset, length)); + if (objfile_ap.get() && objfile_ap->ParseHeader()) + return objfile_ap.release(); + } + return NULL; } -ObjectFile * -ObjectFileMachO::CreateMemoryInstance (const lldb::ModuleSP &module_sp, - DataBufferSP& data_sp, - const ProcessSP &process_sp, - lldb::addr_t header_addr) -{ - if (ObjectFileMachO::MagicBytesMatch(data_sp, 0, data_sp->GetByteSize())) - { - std::unique_ptr<ObjectFile> objfile_ap(new ObjectFileMachO (module_sp, data_sp, process_sp, header_addr)); - if (objfile_ap.get() && objfile_ap->ParseHeader()) - return objfile_ap.release(); - } - return NULL; +ObjectFile *ObjectFileMachO::CreateMemoryInstance( + const lldb::ModuleSP &module_sp, DataBufferSP &data_sp, + const ProcessSP &process_sp, lldb::addr_t header_addr) { + if (ObjectFileMachO::MagicBytesMatch(data_sp, 0, data_sp->GetByteSize())) { + std::unique_ptr<ObjectFile> objfile_ap( + new ObjectFileMachO(module_sp, data_sp, process_sp, header_addr)); + if (objfile_ap.get() && objfile_ap->ParseHeader()) + return objfile_ap.release(); + } + return NULL; } -size_t -ObjectFileMachO::GetModuleSpecifications (const lldb_private::FileSpec& file, - lldb::DataBufferSP& data_sp, - lldb::offset_t data_offset, - lldb::offset_t file_offset, - lldb::offset_t length, - lldb_private::ModuleSpecList &specs) -{ - const size_t initial_count = specs.GetSize(); - - if (ObjectFileMachO::MagicBytesMatch(data_sp, 0, data_sp->GetByteSize())) - { - DataExtractor data; +size_t ObjectFileMachO::GetModuleSpecifications( + const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, + lldb::offset_t data_offset, lldb::offset_t file_offset, + lldb::offset_t length, lldb_private::ModuleSpecList &specs) { + const size_t initial_count = specs.GetSize(); + + if (ObjectFileMachO::MagicBytesMatch(data_sp, 0, data_sp->GetByteSize())) { + DataExtractor data; + data.SetData(data_sp); + llvm::MachO::mach_header header; + if (ParseHeader(data, &data_offset, header)) { + size_t header_and_load_cmds = + header.sizeofcmds + MachHeaderSizeFromMagic(header.magic); + if (header_and_load_cmds >= data_sp->GetByteSize()) { + data_sp = file.ReadFileContents(file_offset, header_and_load_cmds); data.SetData(data_sp); - llvm::MachO::mach_header header; - if (ParseHeader (data, &data_offset, header)) - { - size_t header_and_load_cmds = header.sizeofcmds + MachHeaderSizeFromMagic(header.magic); - if (header_and_load_cmds >= data_sp->GetByteSize()) - { - data_sp = file.ReadFileContents(file_offset, header_and_load_cmds); - data.SetData(data_sp); - data_offset = MachHeaderSizeFromMagic(header.magic); - } - if (data_sp) - { - ModuleSpec spec; - spec.GetFileSpec() = file; - spec.SetObjectOffset(file_offset); - spec.SetObjectSize(length); - - if (GetArchitecture (header, data, data_offset, spec.GetArchitecture())) - { - if (spec.GetArchitecture().IsValid()) - { - GetUUID (header, data, data_offset, spec.GetUUID()); - specs.Append(spec); - } - } - } + data_offset = MachHeaderSizeFromMagic(header.magic); + } + if (data_sp) { + ModuleSpec spec; + spec.GetFileSpec() = file; + spec.SetObjectOffset(file_offset); + spec.SetObjectSize(length); + + if (GetArchitecture(header, data, data_offset, + spec.GetArchitecture())) { + if (spec.GetArchitecture().IsValid()) { + GetUUID(header, data, data_offset, spec.GetUUID()); + specs.Append(spec); + } } + } } - return specs.GetSize() - initial_count; + } + return specs.GetSize() - initial_count; } -const ConstString & -ObjectFileMachO::GetSegmentNameTEXT() -{ - static ConstString g_segment_name_TEXT ("__TEXT"); - return g_segment_name_TEXT; +const ConstString &ObjectFileMachO::GetSegmentNameTEXT() { + static ConstString g_segment_name_TEXT("__TEXT"); + return g_segment_name_TEXT; } -const ConstString & -ObjectFileMachO::GetSegmentNameDATA() -{ - static ConstString g_segment_name_DATA ("__DATA"); - return g_segment_name_DATA; +const ConstString &ObjectFileMachO::GetSegmentNameDATA() { + static ConstString g_segment_name_DATA("__DATA"); + return g_segment_name_DATA; } -const ConstString & -ObjectFileMachO::GetSegmentNameDATA_DIRTY() -{ - static ConstString g_segment_name ("__DATA_DIRTY"); - return g_segment_name; +const ConstString &ObjectFileMachO::GetSegmentNameDATA_DIRTY() { + static ConstString g_segment_name("__DATA_DIRTY"); + return g_segment_name; } -const ConstString & -ObjectFileMachO::GetSegmentNameDATA_CONST() -{ - static ConstString g_segment_name ("__DATA_CONST"); - return g_segment_name; +const ConstString &ObjectFileMachO::GetSegmentNameDATA_CONST() { + static ConstString g_segment_name("__DATA_CONST"); + return g_segment_name; } -const ConstString & -ObjectFileMachO::GetSegmentNameOBJC() -{ - static ConstString g_segment_name_OBJC ("__OBJC"); - return g_segment_name_OBJC; +const ConstString &ObjectFileMachO::GetSegmentNameOBJC() { + static ConstString g_segment_name_OBJC("__OBJC"); + return g_segment_name_OBJC; } -const ConstString & -ObjectFileMachO::GetSegmentNameLINKEDIT() -{ - static ConstString g_section_name_LINKEDIT ("__LINKEDIT"); - return g_section_name_LINKEDIT; +const ConstString &ObjectFileMachO::GetSegmentNameLINKEDIT() { + static ConstString g_section_name_LINKEDIT("__LINKEDIT"); + return g_section_name_LINKEDIT; } -const ConstString & -ObjectFileMachO::GetSectionNameEHFrame() -{ - static ConstString g_section_name_eh_frame ("__eh_frame"); - return g_section_name_eh_frame; +const ConstString &ObjectFileMachO::GetSectionNameEHFrame() { + static ConstString g_section_name_eh_frame("__eh_frame"); + return g_section_name_eh_frame; } -bool -ObjectFileMachO::MagicBytesMatch (DataBufferSP& data_sp, - lldb::addr_t data_offset, - lldb::addr_t data_length) -{ - DataExtractor data; - data.SetData (data_sp, data_offset, data_length); - lldb::offset_t offset = 0; - uint32_t magic = data.GetU32(&offset); - return MachHeaderSizeFromMagic(magic) != 0; +bool ObjectFileMachO::MagicBytesMatch(DataBufferSP &data_sp, + lldb::addr_t data_offset, + lldb::addr_t data_length) { + DataExtractor data; + data.SetData(data_sp, data_offset, data_length); + lldb::offset_t offset = 0; + uint32_t magic = data.GetU32(&offset); + return MachHeaderSizeFromMagic(magic) != 0; } ObjectFileMachO::ObjectFileMachO(const lldb::ModuleSP &module_sp, - DataBufferSP& data_sp, + DataBufferSP &data_sp, lldb::offset_t data_offset, - const FileSpec* file, + const FileSpec *file, lldb::offset_t file_offset, - lldb::offset_t length) : - ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), - m_mach_segments(), - m_mach_sections(), - m_entry_point_address(), - m_thread_context_offsets(), - m_thread_context_offsets_valid(false), - m_reexported_dylibs (), - m_allow_assembly_emulation_unwind_plans (true) -{ - ::memset (&m_header, 0, sizeof(m_header)); - ::memset (&m_dysymtab, 0, sizeof(m_dysymtab)); + lldb::offset_t length) + : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), + m_mach_segments(), m_mach_sections(), m_entry_point_address(), + m_thread_context_offsets(), m_thread_context_offsets_valid(false), + m_reexported_dylibs(), m_allow_assembly_emulation_unwind_plans(true) { + ::memset(&m_header, 0, sizeof(m_header)); + ::memset(&m_dysymtab, 0, sizeof(m_dysymtab)); } -ObjectFileMachO::ObjectFileMachO (const lldb::ModuleSP &module_sp, - lldb::DataBufferSP& header_data_sp, - const lldb::ProcessSP &process_sp, - lldb::addr_t header_addr) : - ObjectFile(module_sp, process_sp, header_addr, header_data_sp), - m_mach_segments(), - m_mach_sections(), - m_entry_point_address(), - m_thread_context_offsets(), - m_thread_context_offsets_valid(false), - m_reexported_dylibs (), - m_allow_assembly_emulation_unwind_plans (true) -{ - ::memset (&m_header, 0, sizeof(m_header)); - ::memset (&m_dysymtab, 0, sizeof(m_dysymtab)); +ObjectFileMachO::ObjectFileMachO(const lldb::ModuleSP &module_sp, + lldb::DataBufferSP &header_data_sp, + const lldb::ProcessSP &process_sp, + lldb::addr_t header_addr) + : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), + m_mach_segments(), m_mach_sections(), m_entry_point_address(), + m_thread_context_offsets(), m_thread_context_offsets_valid(false), + m_reexported_dylibs(), m_allow_assembly_emulation_unwind_plans(true) { + ::memset(&m_header, 0, sizeof(m_header)); + ::memset(&m_dysymtab, 0, sizeof(m_dysymtab)); } -bool -ObjectFileMachO::ParseHeader (DataExtractor &data, - lldb::offset_t *data_offset_ptr, - llvm::MachO::mach_header &header) -{ - data.SetByteOrder (endian::InlHostByteOrder()); - // Leave magic in the original byte order - header.magic = data.GetU32(data_offset_ptr); - bool can_parse = false; - bool is_64_bit = false; - switch (header.magic) - { - case MH_MAGIC: - data.SetByteOrder (endian::InlHostByteOrder()); - data.SetAddressByteSize(4); - can_parse = true; - break; - - case MH_MAGIC_64: - data.SetByteOrder (endian::InlHostByteOrder()); - data.SetAddressByteSize(8); - can_parse = true; - is_64_bit = true; - break; - - case MH_CIGAM: - data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig ? eByteOrderLittle : eByteOrderBig); - data.SetAddressByteSize(4); - can_parse = true; - break; - - case MH_CIGAM_64: - data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig ? eByteOrderLittle : eByteOrderBig); - data.SetAddressByteSize(8); - is_64_bit = true; - can_parse = true; - break; - - default: - break; - } - - if (can_parse) - { - data.GetU32(data_offset_ptr, &header.cputype, 6); - if (is_64_bit) - *data_offset_ptr += 4; - return true; - } - else - { - memset(&header, 0, sizeof(header)); - } - return false; +bool ObjectFileMachO::ParseHeader(DataExtractor &data, + lldb::offset_t *data_offset_ptr, + llvm::MachO::mach_header &header) { + data.SetByteOrder(endian::InlHostByteOrder()); + // Leave magic in the original byte order + header.magic = data.GetU32(data_offset_ptr); + bool can_parse = false; + bool is_64_bit = false; + switch (header.magic) { + case MH_MAGIC: + data.SetByteOrder(endian::InlHostByteOrder()); + data.SetAddressByteSize(4); + can_parse = true; + break; + + case MH_MAGIC_64: + data.SetByteOrder(endian::InlHostByteOrder()); + data.SetAddressByteSize(8); + can_parse = true; + is_64_bit = true; + break; + + case MH_CIGAM: + data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig + ? eByteOrderLittle + : eByteOrderBig); + data.SetAddressByteSize(4); + can_parse = true; + break; + + case MH_CIGAM_64: + data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig + ? eByteOrderLittle + : eByteOrderBig); + data.SetAddressByteSize(8); + is_64_bit = true; + can_parse = true; + break; + + default: + break; + } + + if (can_parse) { + data.GetU32(data_offset_ptr, &header.cputype, 6); + if (is_64_bit) + *data_offset_ptr += 4; + return true; + } else { + memset(&header, 0, sizeof(header)); + } + return false; } -bool -ObjectFileMachO::ParseHeader () -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - bool can_parse = false; - lldb::offset_t offset = 0; - m_data.SetByteOrder (endian::InlHostByteOrder()); - // Leave magic in the original byte order - m_header.magic = m_data.GetU32(&offset); - switch (m_header.magic) - { - case MH_MAGIC: - m_data.SetByteOrder (endian::InlHostByteOrder()); - m_data.SetAddressByteSize(4); - can_parse = true; - break; - - case MH_MAGIC_64: - m_data.SetByteOrder (endian::InlHostByteOrder()); - m_data.SetAddressByteSize(8); - can_parse = true; - break; - - case MH_CIGAM: - m_data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig ? eByteOrderLittle : eByteOrderBig); - m_data.SetAddressByteSize(4); - can_parse = true; - break; - - case MH_CIGAM_64: - m_data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig ? eByteOrderLittle : eByteOrderBig); - m_data.SetAddressByteSize(8); - can_parse = true; - break; - - default: - break; - } - - if (can_parse) - { - m_data.GetU32(&offset, &m_header.cputype, 6); +bool ObjectFileMachO::ParseHeader() { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + bool can_parse = false; + lldb::offset_t offset = 0; + m_data.SetByteOrder(endian::InlHostByteOrder()); + // Leave magic in the original byte order + m_header.magic = m_data.GetU32(&offset); + switch (m_header.magic) { + case MH_MAGIC: + m_data.SetByteOrder(endian::InlHostByteOrder()); + m_data.SetAddressByteSize(4); + can_parse = true; + break; + + case MH_MAGIC_64: + m_data.SetByteOrder(endian::InlHostByteOrder()); + m_data.SetAddressByteSize(8); + can_parse = true; + break; + + case MH_CIGAM: + m_data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig + ? eByteOrderLittle + : eByteOrderBig); + m_data.SetAddressByteSize(4); + can_parse = true; + break; + + case MH_CIGAM_64: + m_data.SetByteOrder(endian::InlHostByteOrder() == eByteOrderBig + ? eByteOrderLittle + : eByteOrderBig); + m_data.SetAddressByteSize(8); + can_parse = true; + break; + + default: + break; + } - - ArchSpec mach_arch; - - if (GetArchitecture (mach_arch)) - { - // Check if the module has a required architecture - const ArchSpec &module_arch = module_sp->GetArchitecture(); - if (module_arch.IsValid() && !module_arch.IsCompatibleMatch(mach_arch)) - return false; - - if (SetModulesArchitecture (mach_arch)) - { - const size_t header_and_lc_size = m_header.sizeofcmds + MachHeaderSizeFromMagic(m_header.magic); - if (m_data.GetByteSize() < header_and_lc_size) - { - DataBufferSP data_sp; - ProcessSP process_sp (m_process_wp.lock()); - if (process_sp) - { - data_sp = ReadMemory (process_sp, m_memory_addr, header_and_lc_size); - } - else - { - // Read in all only the load command data from the file on disk - data_sp = m_file.ReadFileContents(m_file_offset, header_and_lc_size); - if (data_sp->GetByteSize() != header_and_lc_size) - return false; - } - if (data_sp) - m_data.SetData (data_sp); - } - } - return true; + if (can_parse) { + m_data.GetU32(&offset, &m_header.cputype, 6); + + ArchSpec mach_arch; + + if (GetArchitecture(mach_arch)) { + // Check if the module has a required architecture + const ArchSpec &module_arch = module_sp->GetArchitecture(); + if (module_arch.IsValid() && !module_arch.IsCompatibleMatch(mach_arch)) + return false; + + if (SetModulesArchitecture(mach_arch)) { + const size_t header_and_lc_size = + m_header.sizeofcmds + MachHeaderSizeFromMagic(m_header.magic); + if (m_data.GetByteSize() < header_and_lc_size) { + DataBufferSP data_sp; + ProcessSP process_sp(m_process_wp.lock()); + if (process_sp) { + data_sp = + ReadMemory(process_sp, m_memory_addr, header_and_lc_size); + } else { + // Read in all only the load command data from the file on disk + data_sp = + m_file.ReadFileContents(m_file_offset, header_and_lc_size); + if (data_sp->GetByteSize() != header_and_lc_size) + return false; } + if (data_sp) + m_data.SetData(data_sp); + } } - else - { - memset(&m_header, 0, sizeof(struct mach_header)); - } + return true; + } + } else { + memset(&m_header, 0, sizeof(struct mach_header)); } - return false; + } + return false; } -ByteOrder -ObjectFileMachO::GetByteOrder () const -{ - return m_data.GetByteOrder (); +ByteOrder ObjectFileMachO::GetByteOrder() const { + return m_data.GetByteOrder(); } -bool -ObjectFileMachO::IsExecutable() const -{ - return m_header.filetype == MH_EXECUTE; +bool ObjectFileMachO::IsExecutable() const { + return m_header.filetype == MH_EXECUTE; } -uint32_t -ObjectFileMachO::GetAddressByteSize () const -{ - return m_data.GetAddressByteSize (); +uint32_t ObjectFileMachO::GetAddressByteSize() const { + return m_data.GetAddressByteSize(); } -AddressClass -ObjectFileMachO::GetAddressClass (lldb::addr_t file_addr) -{ - Symtab *symtab = GetSymtab(); - if (symtab) - { - Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); - if (symbol) - { - if (symbol->ValueIsAddress()) - { - SectionSP section_sp (symbol->GetAddressRef().GetSection()); - if (section_sp) - { - const lldb::SectionType section_type = section_sp->GetType(); - switch (section_type) - { - case eSectionTypeInvalid: - return eAddressClassUnknown; - - case eSectionTypeCode: - if (m_header.cputype == llvm::MachO::CPU_TYPE_ARM) - { - // For ARM we have a bit in the n_desc field of the symbol - // that tells us ARM/Thumb which is bit 0x0008. - if (symbol->GetFlags() & MACHO_NLIST_ARM_SYMBOL_IS_THUMB) - return eAddressClassCodeAlternateISA; - } - return eAddressClassCode; - - case eSectionTypeContainer: - return eAddressClassUnknown; - - case eSectionTypeData: - case eSectionTypeDataCString: - case eSectionTypeDataCStringPointers: - case eSectionTypeDataSymbolAddress: - case eSectionTypeData4: - case eSectionTypeData8: - case eSectionTypeData16: - case eSectionTypeDataPointers: - case eSectionTypeZeroFill: - case eSectionTypeDataObjCMessageRefs: - case eSectionTypeDataObjCCFStrings: - case eSectionTypeGoSymtab: - return eAddressClassData; - - case eSectionTypeDebug: - case eSectionTypeDWARFDebugAbbrev: - case eSectionTypeDWARFDebugAddr: - case eSectionTypeDWARFDebugAranges: - case eSectionTypeDWARFDebugFrame: - case eSectionTypeDWARFDebugInfo: - case eSectionTypeDWARFDebugLine: - case eSectionTypeDWARFDebugLoc: - case eSectionTypeDWARFDebugMacInfo: - case eSectionTypeDWARFDebugMacro: - case eSectionTypeDWARFDebugPubNames: - case eSectionTypeDWARFDebugPubTypes: - case eSectionTypeDWARFDebugRanges: - case eSectionTypeDWARFDebugStr: - case eSectionTypeDWARFDebugStrOffsets: - case eSectionTypeDWARFAppleNames: - case eSectionTypeDWARFAppleTypes: - case eSectionTypeDWARFAppleNamespaces: - case eSectionTypeDWARFAppleObjC: - return eAddressClassDebug; - - case eSectionTypeEHFrame: - case eSectionTypeARMexidx: - case eSectionTypeARMextab: - case eSectionTypeCompactUnwind: - return eAddressClassRuntime; - - case eSectionTypeAbsoluteAddress: - case eSectionTypeELFSymbolTable: - case eSectionTypeELFDynamicSymbols: - case eSectionTypeELFRelocationEntries: - case eSectionTypeELFDynamicLinkInfo: - case eSectionTypeOther: - return eAddressClassUnknown; - } - } - } - - const SymbolType symbol_type = symbol->GetType(); - switch (symbol_type) - { - case eSymbolTypeAny: return eAddressClassUnknown; - case eSymbolTypeAbsolute: return eAddressClassUnknown; - - case eSymbolTypeCode: - case eSymbolTypeTrampoline: - case eSymbolTypeResolver: - if (m_header.cputype == llvm::MachO::CPU_TYPE_ARM) - { - // For ARM we have a bit in the n_desc field of the symbol - // that tells us ARM/Thumb which is bit 0x0008. - if (symbol->GetFlags() & MACHO_NLIST_ARM_SYMBOL_IS_THUMB) - return eAddressClassCodeAlternateISA; - } - return eAddressClassCode; - - case eSymbolTypeData: return eAddressClassData; - case eSymbolTypeRuntime: return eAddressClassRuntime; - case eSymbolTypeException: return eAddressClassRuntime; - case eSymbolTypeSourceFile: return eAddressClassDebug; - case eSymbolTypeHeaderFile: return eAddressClassDebug; - case eSymbolTypeObjectFile: return eAddressClassDebug; - case eSymbolTypeCommonBlock: return eAddressClassDebug; - case eSymbolTypeBlock: return eAddressClassDebug; - case eSymbolTypeLocal: return eAddressClassData; - case eSymbolTypeParam: return eAddressClassData; - case eSymbolTypeVariable: return eAddressClassData; - case eSymbolTypeVariableType: return eAddressClassDebug; - case eSymbolTypeLineEntry: return eAddressClassDebug; - case eSymbolTypeLineHeader: return eAddressClassDebug; - case eSymbolTypeScopeBegin: return eAddressClassDebug; - case eSymbolTypeScopeEnd: return eAddressClassDebug; - case eSymbolTypeAdditional: return eAddressClassUnknown; - case eSymbolTypeCompiler: return eAddressClassDebug; - case eSymbolTypeInstrumentation:return eAddressClassDebug; - case eSymbolTypeUndefined: return eAddressClassUnknown; - case eSymbolTypeObjCClass: return eAddressClassRuntime; - case eSymbolTypeObjCMetaClass: return eAddressClassRuntime; - case eSymbolTypeObjCIVar: return eAddressClassRuntime; - case eSymbolTypeReExported: return eAddressClassRuntime; +AddressClass ObjectFileMachO::GetAddressClass(lldb::addr_t file_addr) { + Symtab *symtab = GetSymtab(); + if (symtab) { + Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); + if (symbol) { + if (symbol->ValueIsAddress()) { + SectionSP section_sp(symbol->GetAddressRef().GetSection()); + if (section_sp) { + const lldb::SectionType section_type = section_sp->GetType(); + switch (section_type) { + case eSectionTypeInvalid: + return eAddressClassUnknown; + + case eSectionTypeCode: + if (m_header.cputype == llvm::MachO::CPU_TYPE_ARM) { + // For ARM we have a bit in the n_desc field of the symbol + // that tells us ARM/Thumb which is bit 0x0008. + if (symbol->GetFlags() & MACHO_NLIST_ARM_SYMBOL_IS_THUMB) + return eAddressClassCodeAlternateISA; } + return eAddressClassCode; + + case eSectionTypeContainer: + return eAddressClassUnknown; + + case eSectionTypeData: + case eSectionTypeDataCString: + case eSectionTypeDataCStringPointers: + case eSectionTypeDataSymbolAddress: + case eSectionTypeData4: + case eSectionTypeData8: + case eSectionTypeData16: + case eSectionTypeDataPointers: + case eSectionTypeZeroFill: + case eSectionTypeDataObjCMessageRefs: + case eSectionTypeDataObjCCFStrings: + case eSectionTypeGoSymtab: + return eAddressClassData; + + case eSectionTypeDebug: + case eSectionTypeDWARFDebugAbbrev: + case eSectionTypeDWARFDebugAddr: + case eSectionTypeDWARFDebugAranges: + case eSectionTypeDWARFDebugFrame: + case eSectionTypeDWARFDebugInfo: + case eSectionTypeDWARFDebugLine: + case eSectionTypeDWARFDebugLoc: + case eSectionTypeDWARFDebugMacInfo: + case eSectionTypeDWARFDebugMacro: + case eSectionTypeDWARFDebugPubNames: + case eSectionTypeDWARFDebugPubTypes: + case eSectionTypeDWARFDebugRanges: + case eSectionTypeDWARFDebugStr: + case eSectionTypeDWARFDebugStrOffsets: + case eSectionTypeDWARFAppleNames: + case eSectionTypeDWARFAppleTypes: + case eSectionTypeDWARFAppleNamespaces: + case eSectionTypeDWARFAppleObjC: + return eAddressClassDebug; + + case eSectionTypeEHFrame: + case eSectionTypeARMexidx: + case eSectionTypeARMextab: + case eSectionTypeCompactUnwind: + return eAddressClassRuntime; + + case eSectionTypeAbsoluteAddress: + case eSectionTypeELFSymbolTable: + case eSectionTypeELFDynamicSymbols: + case eSectionTypeELFRelocationEntries: + case eSectionTypeELFDynamicLinkInfo: + case eSectionTypeOther: + return eAddressClassUnknown; + } } + } + + const SymbolType symbol_type = symbol->GetType(); + switch (symbol_type) { + case eSymbolTypeAny: + return eAddressClassUnknown; + case eSymbolTypeAbsolute: + return eAddressClassUnknown; + + case eSymbolTypeCode: + case eSymbolTypeTrampoline: + case eSymbolTypeResolver: + if (m_header.cputype == llvm::MachO::CPU_TYPE_ARM) { + // For ARM we have a bit in the n_desc field of the symbol + // that tells us ARM/Thumb which is bit 0x0008. + if (symbol->GetFlags() & MACHO_NLIST_ARM_SYMBOL_IS_THUMB) + return eAddressClassCodeAlternateISA; + } + return eAddressClassCode; + + case eSymbolTypeData: + return eAddressClassData; + case eSymbolTypeRuntime: + return eAddressClassRuntime; + case eSymbolTypeException: + return eAddressClassRuntime; + case eSymbolTypeSourceFile: + return eAddressClassDebug; + case eSymbolTypeHeaderFile: + return eAddressClassDebug; + case eSymbolTypeObjectFile: + return eAddressClassDebug; + case eSymbolTypeCommonBlock: + return eAddressClassDebug; + case eSymbolTypeBlock: + return eAddressClassDebug; + case eSymbolTypeLocal: + return eAddressClassData; + case eSymbolTypeParam: + return eAddressClassData; + case eSymbolTypeVariable: + return eAddressClassData; + case eSymbolTypeVariableType: + return eAddressClassDebug; + case eSymbolTypeLineEntry: + return eAddressClassDebug; + case eSymbolTypeLineHeader: + return eAddressClassDebug; + case eSymbolTypeScopeBegin: + return eAddressClassDebug; + case eSymbolTypeScopeEnd: + return eAddressClassDebug; + case eSymbolTypeAdditional: + return eAddressClassUnknown; + case eSymbolTypeCompiler: + return eAddressClassDebug; + case eSymbolTypeInstrumentation: + return eAddressClassDebug; + case eSymbolTypeUndefined: + return eAddressClassUnknown; + case eSymbolTypeObjCClass: + return eAddressClassRuntime; + case eSymbolTypeObjCMetaClass: + return eAddressClassRuntime; + case eSymbolTypeObjCIVar: + return eAddressClassRuntime; + case eSymbolTypeReExported: + return eAddressClassRuntime; + } + } + } + return eAddressClassUnknown; +} + +Symtab *ObjectFileMachO::GetSymtab() { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + if (m_symtab_ap.get() == NULL) { + m_symtab_ap.reset(new Symtab(this)); + std::lock_guard<std::recursive_mutex> symtab_guard( + m_symtab_ap->GetMutex()); + ParseSymtab(); + m_symtab_ap->Finalize(); } - return eAddressClassUnknown; + } + return m_symtab_ap.get(); } -Symtab * -ObjectFileMachO::GetSymtab() -{ +bool ObjectFileMachO::IsStripped() { + if (m_dysymtab.cmd == 0) { ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - if (m_symtab_ap.get() == NULL) - { - m_symtab_ap.reset(new Symtab(this)); - std::lock_guard<std::recursive_mutex> symtab_guard(m_symtab_ap->GetMutex()); - ParseSymtab (); - m_symtab_ap->Finalize (); + if (module_sp) { + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + for (uint32_t i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t load_cmd_offset = offset; + + load_command lc; + if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) + break; + if (lc.cmd == LC_DYSYMTAB) { + m_dysymtab.cmd = lc.cmd; + m_dysymtab.cmdsize = lc.cmdsize; + if (m_data.GetU32(&offset, &m_dysymtab.ilocalsym, + (sizeof(m_dysymtab) / sizeof(uint32_t)) - 2) == + NULL) { + // Clear m_dysymtab if we were unable to read all items from the + // load command + ::memset(&m_dysymtab, 0, sizeof(m_dysymtab)); + } } + offset = load_cmd_offset + lc.cmdsize; + } } - return m_symtab_ap.get(); + } + if (m_dysymtab.cmd) + return m_dysymtab.nlocalsym <= 1; + return false; } -bool -ObjectFileMachO::IsStripped () -{ - if (m_dysymtab.cmd == 0) - { - ModuleSP module_sp(GetModule()); - if (module_sp) - { - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - for (uint32_t i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t load_cmd_offset = offset; - - load_command lc; - if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) - break; - if (lc.cmd == LC_DYSYMTAB) - { - m_dysymtab.cmd = lc.cmd; - m_dysymtab.cmdsize = lc.cmdsize; - if (m_data.GetU32 (&offset, &m_dysymtab.ilocalsym, (sizeof(m_dysymtab) / sizeof(uint32_t)) - 2) == NULL) - { - // Clear m_dysymtab if we were unable to read all items from the load command - ::memset (&m_dysymtab, 0, sizeof(m_dysymtab)); - } - } - offset = load_cmd_offset + lc.cmdsize; - } +void ObjectFileMachO::CreateSections(SectionList &unified_section_list) { + if (!m_sections_ap.get()) { + m_sections_ap.reset(new SectionList()); + + const bool is_dsym = (m_header.filetype == MH_DSYM); + lldb::user_id_t segID = 0; + lldb::user_id_t sectID = 0; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + uint32_t i; + const bool is_core = GetType() == eTypeCoreFile; + // bool dump_sections = false; + ModuleSP module_sp(GetModule()); + // First look up any LC_ENCRYPTION_INFO load commands + typedef RangeArray<uint32_t, uint32_t, 8> EncryptedFileRanges; + EncryptedFileRanges encrypted_file_ranges; + encryption_info_command encryption_cmd; + for (i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t load_cmd_offset = offset; + if (m_data.GetU32(&offset, &encryption_cmd, 2) == NULL) + break; + + // LC_ENCRYPTION_INFO and LC_ENCRYPTION_INFO_64 have the same sizes for + // the 3 fields we care about, so treat them the same. + if (encryption_cmd.cmd == LC_ENCRYPTION_INFO || + encryption_cmd.cmd == LC_ENCRYPTION_INFO_64) { + if (m_data.GetU32(&offset, &encryption_cmd.cryptoff, 3)) { + if (encryption_cmd.cryptid != 0) { + EncryptedFileRanges::Entry entry; + entry.SetRangeBase(encryption_cmd.cryptoff); + entry.SetByteSize(encryption_cmd.cryptsize); + encrypted_file_ranges.Append(entry); + } } + } + offset = load_cmd_offset + encryption_cmd.cmdsize; } - if (m_dysymtab.cmd) - return m_dysymtab.nlocalsym <= 1; - return false; -} -void -ObjectFileMachO::CreateSections (SectionList &unified_section_list) -{ - if (!m_sections_ap.get()) - { - m_sections_ap.reset(new SectionList()); - - const bool is_dsym = (m_header.filetype == MH_DSYM); - lldb::user_id_t segID = 0; - lldb::user_id_t sectID = 0; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - uint32_t i; - const bool is_core = GetType() == eTypeCoreFile; - //bool dump_sections = false; - ModuleSP module_sp (GetModule()); - // First look up any LC_ENCRYPTION_INFO load commands - typedef RangeArray<uint32_t, uint32_t, 8> EncryptedFileRanges; - EncryptedFileRanges encrypted_file_ranges; - encryption_info_command encryption_cmd; - for (i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t load_cmd_offset = offset; - if (m_data.GetU32(&offset, &encryption_cmd, 2) == NULL) - break; + bool section_file_addresses_changed = false; + + offset = MachHeaderSizeFromMagic(m_header.magic); + + struct segment_command_64 load_cmd; + for (i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t load_cmd_offset = offset; + if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) + break; + + if (load_cmd.cmd == LC_SEGMENT || load_cmd.cmd == LC_SEGMENT_64) { + if (m_data.GetU8(&offset, (uint8_t *)load_cmd.segname, 16)) { + bool add_section = true; + bool add_to_unified = true; + ConstString const_segname(load_cmd.segname, + std::min<size_t>(strlen(load_cmd.segname), + sizeof(load_cmd.segname))); + + SectionSP unified_section_sp( + unified_section_list.FindSectionByName(const_segname)); + if (is_dsym && unified_section_sp) { + if (const_segname == GetSegmentNameLINKEDIT()) { + // We need to keep the __LINKEDIT segment private to this object + // file only + add_to_unified = false; + } else { + // This is the dSYM file and this section has already been created + // by + // the object file, no need to create it. + add_section = false; + } + } + load_cmd.vmaddr = m_data.GetAddress(&offset); + load_cmd.vmsize = m_data.GetAddress(&offset); + load_cmd.fileoff = m_data.GetAddress(&offset); + load_cmd.filesize = m_data.GetAddress(&offset); + if (m_length != 0 && load_cmd.filesize != 0) { + if (load_cmd.fileoff > m_length) { + // We have a load command that says it extends past the end of the + // file. This is likely + // a corrupt file. We don't have any way to return an error + // condition here (this method + // was likely invoked from something like + // ObjectFile::GetSectionList()) -- all we can do + // is null out the SectionList vector and if a process has been + // set up, dump a message + // to stdout. The most common case here is core file debugging + // with a truncated file. + const char *lc_segment_name = load_cmd.cmd == LC_SEGMENT_64 + ? "LC_SEGMENT_64" + : "LC_SEGMENT"; + module_sp->ReportWarning( + "load command %u %s has a fileoff (0x%" PRIx64 + ") that extends beyond the end of the file (0x%" PRIx64 + "), ignoring this section", + i, lc_segment_name, load_cmd.fileoff, m_length); + + load_cmd.fileoff = 0; + load_cmd.filesize = 0; + } - // LC_ENCRYPTION_INFO and LC_ENCRYPTION_INFO_64 have the same sizes for - // the 3 fields we care about, so treat them the same. - if (encryption_cmd.cmd == LC_ENCRYPTION_INFO || encryption_cmd.cmd == LC_ENCRYPTION_INFO_64) - { - if (m_data.GetU32(&offset, &encryption_cmd.cryptoff, 3)) - { - if (encryption_cmd.cryptid != 0) - { - EncryptedFileRanges::Entry entry; - entry.SetRangeBase(encryption_cmd.cryptoff); - entry.SetByteSize(encryption_cmd.cryptsize); - encrypted_file_ranges.Append(entry); - } + if (load_cmd.fileoff + load_cmd.filesize > m_length) { + // We have a load command that says it extends past the end of the + // file. This is likely + // a corrupt file. We don't have any way to return an error + // condition here (this method + // was likely invoked from something like + // ObjectFile::GetSectionList()) -- all we can do + // is null out the SectionList vector and if a process has been + // set up, dump a message + // to stdout. The most common case here is core file debugging + // with a truncated file. + const char *lc_segment_name = load_cmd.cmd == LC_SEGMENT_64 + ? "LC_SEGMENT_64" + : "LC_SEGMENT"; + GetModule()->ReportWarning( + "load command %u %s has a fileoff + filesize (0x%" PRIx64 + ") that extends beyond the end of the file (0x%" PRIx64 + "), the segment will be truncated to match", + i, lc_segment_name, load_cmd.fileoff + load_cmd.filesize, + m_length); + + // Tuncase the length + load_cmd.filesize = m_length - load_cmd.fileoff; + } + } + if (m_data.GetU32(&offset, &load_cmd.maxprot, 4)) { + uint32_t segment_permissions = 0; + if (load_cmd.initprot & VM_PROT_READ) + segment_permissions |= ePermissionsReadable; + if (load_cmd.initprot & VM_PROT_WRITE) + segment_permissions |= ePermissionsWritable; + if (load_cmd.initprot & VM_PROT_EXECUTE) + segment_permissions |= ePermissionsExecutable; + + const bool segment_is_encrypted = + (load_cmd.flags & SG_PROTECTED_VERSION_1) != 0; + + // Keep a list of mach segments around in case we need to + // get at data that isn't stored in the abstracted Sections. + m_mach_segments.push_back(load_cmd); + + // Use a segment ID of the segment index shifted left by 8 so they + // never conflict with any of the sections. + SectionSP segment_sp; + if (add_section && (const_segname || is_core)) { + segment_sp.reset(new Section( + module_sp, // Module to which this section belongs + this, // Object file to which this sections belongs + ++segID << 8, // Section ID is the 1 based segment index + // shifted right by 8 bits as not to collide + // with any of the 256 section IDs that are + // possible + const_segname, // Name of this section + eSectionTypeContainer, // This section is a container of other + // sections. + load_cmd.vmaddr, // File VM address == addresses as they are + // found in the object file + load_cmd.vmsize, // VM size in bytes of this section + load_cmd.fileoff, // Offset to the data for this section in + // the file + load_cmd.filesize, // Size in bytes of this section as found + // in the file + 0, // Segments have no alignment information + load_cmd.flags)); // Flags for this section + + segment_sp->SetIsEncrypted(segment_is_encrypted); + m_sections_ap->AddSection(segment_sp); + segment_sp->SetPermissions(segment_permissions); + if (add_to_unified) + unified_section_list.AddSection(segment_sp); + } else if (unified_section_sp) { + if (is_dsym && + unified_section_sp->GetFileAddress() != load_cmd.vmaddr) { + // Check to see if the module was read from memory? + if (module_sp->GetObjectFile()->GetHeaderAddress().IsValid()) { + // We have a module that is in memory and needs to have its + // file address adjusted. We need to do this because when we + // load a file from memory, its addresses will be slid + // already, + // yet the addresses in the new symbol file will still be + // unslid. + // Since everything is stored as section offset, this + // shouldn't + // cause any problems. + + // Make sure we've parsed the symbol table from the + // ObjectFile before we go around changing its Sections. + module_sp->GetObjectFile()->GetSymtab(); + // eh_frame would present the same problems but we parse that + // on + // a per-function basis as-needed so it's more difficult to + // remove its use of the Sections. Realistically, the + // environments + // where this code path will be taken will not have eh_frame + // sections. + + unified_section_sp->SetFileAddress(load_cmd.vmaddr); + + // Notify the module that the section addresses have been + // changed once + // we're done so any file-address caches can be updated. + section_file_addresses_changed = true; } + } + m_sections_ap->AddSection(unified_section_sp); } - offset = load_cmd_offset + encryption_cmd.cmdsize; - } - bool section_file_addresses_changed = false; - - offset = MachHeaderSizeFromMagic(m_header.magic); + struct section_64 sect64; + ::memset(§64, 0, sizeof(sect64)); + // Push a section into our mach sections for the section at + // index zero (NO_SECT) if we don't have any mach sections yet... + if (m_mach_sections.empty()) + m_mach_sections.push_back(sect64); + uint32_t segment_sect_idx; + const lldb::user_id_t first_segment_sectID = sectID + 1; + + const uint32_t num_u32s = load_cmd.cmd == LC_SEGMENT ? 7 : 8; + for (segment_sect_idx = 0; segment_sect_idx < load_cmd.nsects; + ++segment_sect_idx) { + if (m_data.GetU8(&offset, (uint8_t *)sect64.sectname, + sizeof(sect64.sectname)) == NULL) + break; + if (m_data.GetU8(&offset, (uint8_t *)sect64.segname, + sizeof(sect64.segname)) == NULL) + break; + sect64.addr = m_data.GetAddress(&offset); + sect64.size = m_data.GetAddress(&offset); - struct segment_command_64 load_cmd; - for (i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t load_cmd_offset = offset; - if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) + if (m_data.GetU32(&offset, §64.offset, num_u32s) == NULL) break; - if (load_cmd.cmd == LC_SEGMENT || load_cmd.cmd == LC_SEGMENT_64) - { - if (m_data.GetU8(&offset, (uint8_t*)load_cmd.segname, 16)) - { - bool add_section = true; - bool add_to_unified = true; - ConstString const_segname (load_cmd.segname, std::min<size_t>(strlen(load_cmd.segname), sizeof(load_cmd.segname))); - - SectionSP unified_section_sp(unified_section_list.FindSectionByName(const_segname)); - if (is_dsym && unified_section_sp) - { - if (const_segname == GetSegmentNameLINKEDIT()) - { - // We need to keep the __LINKEDIT segment private to this object file only - add_to_unified = false; - } - else - { - // This is the dSYM file and this section has already been created by - // the object file, no need to create it. - add_section = false; - } + // Keep a list of mach sections around in case we need to + // get at data that isn't stored in the abstracted Sections. + m_mach_sections.push_back(sect64); + + if (add_section) { + ConstString section_name( + sect64.sectname, std::min<size_t>(strlen(sect64.sectname), + sizeof(sect64.sectname))); + if (!const_segname) { + // We have a segment with no name so we need to conjure up + // segments that correspond to the section's segname if there + // isn't already such a section. If there is such a section, + // we resize the section so that it spans all sections. + // We also mark these sections as fake so address matches + // don't + // hit if they land in the gaps between the child sections. + const_segname.SetTrimmedCStringWithLength( + sect64.segname, sizeof(sect64.segname)); + segment_sp = + unified_section_list.FindSectionByName(const_segname); + if (segment_sp.get()) { + Section *segment = segment_sp.get(); + // Grow the section size as needed. + const lldb::addr_t sect64_min_addr = sect64.addr; + const lldb::addr_t sect64_max_addr = + sect64_min_addr + sect64.size; + const lldb::addr_t curr_seg_byte_size = + segment->GetByteSize(); + const lldb::addr_t curr_seg_min_addr = + segment->GetFileAddress(); + const lldb::addr_t curr_seg_max_addr = + curr_seg_min_addr + curr_seg_byte_size; + if (sect64_min_addr >= curr_seg_min_addr) { + const lldb::addr_t new_seg_byte_size = + sect64_max_addr - curr_seg_min_addr; + // Only grow the section size if needed + if (new_seg_byte_size > curr_seg_byte_size) + segment->SetByteSize(new_seg_byte_size); + } else { + // We need to change the base address of the segment and + // adjust the child section offsets for all existing + // children. + const lldb::addr_t slide_amount = + sect64_min_addr - curr_seg_min_addr; + segment->Slide(slide_amount, false); + segment->GetChildren().Slide(-slide_amount, false); + segment->SetByteSize(curr_seg_max_addr - sect64_min_addr); } - load_cmd.vmaddr = m_data.GetAddress(&offset); - load_cmd.vmsize = m_data.GetAddress(&offset); - load_cmd.fileoff = m_data.GetAddress(&offset); - load_cmd.filesize = m_data.GetAddress(&offset); - if (m_length != 0 && load_cmd.filesize != 0) - { - if (load_cmd.fileoff > m_length) - { - // We have a load command that says it extends past the end of the file. This is likely - // a corrupt file. We don't have any way to return an error condition here (this method - // was likely invoked from something like ObjectFile::GetSectionList()) -- all we can do - // is null out the SectionList vector and if a process has been set up, dump a message - // to stdout. The most common case here is core file debugging with a truncated file. - const char *lc_segment_name = load_cmd.cmd == LC_SEGMENT_64 ? "LC_SEGMENT_64" : "LC_SEGMENT"; - module_sp->ReportWarning("load command %u %s has a fileoff (0x%" PRIx64 ") that extends beyond the end of the file (0x%" PRIx64 "), ignoring this section", - i, - lc_segment_name, - load_cmd.fileoff, - m_length); - - load_cmd.fileoff = 0; - load_cmd.filesize = 0; - } - - if (load_cmd.fileoff + load_cmd.filesize > m_length) - { - // We have a load command that says it extends past the end of the file. This is likely - // a corrupt file. We don't have any way to return an error condition here (this method - // was likely invoked from something like ObjectFile::GetSectionList()) -- all we can do - // is null out the SectionList vector and if a process has been set up, dump a message - // to stdout. The most common case here is core file debugging with a truncated file. - const char *lc_segment_name = load_cmd.cmd == LC_SEGMENT_64 ? "LC_SEGMENT_64" : "LC_SEGMENT"; - GetModule()->ReportWarning("load command %u %s has a fileoff + filesize (0x%" PRIx64 ") that extends beyond the end of the file (0x%" PRIx64 "), the segment will be truncated to match", - i, - lc_segment_name, - load_cmd.fileoff + load_cmd.filesize, - m_length); - - // Tuncase the length - load_cmd.filesize = m_length - load_cmd.fileoff; - } - } - if (m_data.GetU32(&offset, &load_cmd.maxprot, 4)) - { - const uint32_t segment_permissions = - ((load_cmd.initprot & VM_PROT_READ) ? ePermissionsReadable : 0) | - ((load_cmd.initprot & VM_PROT_WRITE) ? ePermissionsWritable : 0) | - ((load_cmd.initprot & VM_PROT_EXECUTE) ? ePermissionsExecutable : 0); - - const bool segment_is_encrypted = (load_cmd.flags & SG_PROTECTED_VERSION_1) != 0; - - // Keep a list of mach segments around in case we need to - // get at data that isn't stored in the abstracted Sections. - m_mach_segments.push_back (load_cmd); - - // Use a segment ID of the segment index shifted left by 8 so they - // never conflict with any of the sections. - SectionSP segment_sp; - if (add_section && (const_segname || is_core)) - { - segment_sp.reset(new Section (module_sp, // Module to which this section belongs - this, // Object file to which this sections belongs - ++segID << 8, // Section ID is the 1 based segment index shifted right by 8 bits as not to collide with any of the 256 section IDs that are possible - const_segname, // Name of this section - eSectionTypeContainer, // This section is a container of other sections. - load_cmd.vmaddr, // File VM address == addresses as they are found in the object file - load_cmd.vmsize, // VM size in bytes of this section - load_cmd.fileoff, // Offset to the data for this section in the file - load_cmd.filesize, // Size in bytes of this section as found in the file - 0, // Segments have no alignment information - load_cmd.flags)); // Flags for this section - - segment_sp->SetIsEncrypted (segment_is_encrypted); - m_sections_ap->AddSection(segment_sp); - segment_sp->SetPermissions(segment_permissions); - if (add_to_unified) - unified_section_list.AddSection(segment_sp); - } - else if (unified_section_sp) - { - if (is_dsym && unified_section_sp->GetFileAddress() != load_cmd.vmaddr) - { - // Check to see if the module was read from memory? - if (module_sp->GetObjectFile()->GetHeaderAddress().IsValid()) - { - // We have a module that is in memory and needs to have its - // file address adjusted. We need to do this because when we - // load a file from memory, its addresses will be slid already, - // yet the addresses in the new symbol file will still be unslid. - // Since everything is stored as section offset, this shouldn't - // cause any problems. - - // Make sure we've parsed the symbol table from the - // ObjectFile before we go around changing its Sections. - module_sp->GetObjectFile()->GetSymtab(); - // eh_frame would present the same problems but we parse that on - // a per-function basis as-needed so it's more difficult to - // remove its use of the Sections. Realistically, the environments - // where this code path will be taken will not have eh_frame sections. - - unified_section_sp->SetFileAddress(load_cmd.vmaddr); - - // Notify the module that the section addresses have been changed once - // we're done so any file-address caches can be updated. - section_file_addresses_changed = true; - } - } - m_sections_ap->AddSection(unified_section_sp); - } - - struct section_64 sect64; - ::memset (§64, 0, sizeof(sect64)); - // Push a section into our mach sections for the section at - // index zero (NO_SECT) if we don't have any mach sections yet... - if (m_mach_sections.empty()) - m_mach_sections.push_back(sect64); - uint32_t segment_sect_idx; - const lldb::user_id_t first_segment_sectID = sectID + 1; - - - const uint32_t num_u32s = load_cmd.cmd == LC_SEGMENT ? 7 : 8; - for (segment_sect_idx=0; segment_sect_idx<load_cmd.nsects; ++segment_sect_idx) - { - if (m_data.GetU8(&offset, (uint8_t*)sect64.sectname, sizeof(sect64.sectname)) == NULL) - break; - if (m_data.GetU8(&offset, (uint8_t*)sect64.segname, sizeof(sect64.segname)) == NULL) - break; - sect64.addr = m_data.GetAddress(&offset); - sect64.size = m_data.GetAddress(&offset); - - if (m_data.GetU32(&offset, §64.offset, num_u32s) == NULL) - break; - - // Keep a list of mach sections around in case we need to - // get at data that isn't stored in the abstracted Sections. - m_mach_sections.push_back (sect64); - - if (add_section) - { - ConstString section_name (sect64.sectname, std::min<size_t>(strlen(sect64.sectname), sizeof(sect64.sectname))); - if (!const_segname) - { - // We have a segment with no name so we need to conjure up - // segments that correspond to the section's segname if there - // isn't already such a section. If there is such a section, - // we resize the section so that it spans all sections. - // We also mark these sections as fake so address matches don't - // hit if they land in the gaps between the child sections. - const_segname.SetTrimmedCStringWithLength(sect64.segname, sizeof(sect64.segname)); - segment_sp = unified_section_list.FindSectionByName (const_segname); - if (segment_sp.get()) - { - Section *segment = segment_sp.get(); - // Grow the section size as needed. - const lldb::addr_t sect64_min_addr = sect64.addr; - const lldb::addr_t sect64_max_addr = sect64_min_addr + sect64.size; - const lldb::addr_t curr_seg_byte_size = segment->GetByteSize(); - const lldb::addr_t curr_seg_min_addr = segment->GetFileAddress(); - const lldb::addr_t curr_seg_max_addr = curr_seg_min_addr + curr_seg_byte_size; - if (sect64_min_addr >= curr_seg_min_addr) - { - const lldb::addr_t new_seg_byte_size = sect64_max_addr - curr_seg_min_addr; - // Only grow the section size if needed - if (new_seg_byte_size > curr_seg_byte_size) - segment->SetByteSize (new_seg_byte_size); - } - else - { - // We need to change the base address of the segment and - // adjust the child section offsets for all existing children. - const lldb::addr_t slide_amount = sect64_min_addr - curr_seg_min_addr; - segment->Slide(slide_amount, false); - segment->GetChildren().Slide(-slide_amount, false); - segment->SetByteSize (curr_seg_max_addr - sect64_min_addr); - } - - // Grow the section size as needed. - if (sect64.offset) - { - const lldb::addr_t segment_min_file_offset = segment->GetFileOffset(); - const lldb::addr_t segment_max_file_offset = segment_min_file_offset + segment->GetFileSize(); - - const lldb::addr_t section_min_file_offset = sect64.offset; - const lldb::addr_t section_max_file_offset = section_min_file_offset + sect64.size; - const lldb::addr_t new_file_offset = std::min (section_min_file_offset, segment_min_file_offset); - const lldb::addr_t new_file_size = std::max (section_max_file_offset, segment_max_file_offset) - new_file_offset; - segment->SetFileOffset (new_file_offset); - segment->SetFileSize (new_file_size); - } - } - else - { - // Create a fake section for the section's named segment - segment_sp.reset(new Section (segment_sp, // Parent section - module_sp, // Module to which this section belongs - this, // Object file to which this section belongs - ++segID << 8, // Section ID is the 1 based segment index shifted right by 8 bits as not to collide with any of the 256 section IDs that are possible - const_segname, // Name of this section - eSectionTypeContainer, // This section is a container of other sections. - sect64.addr, // File VM address == addresses as they are found in the object file - sect64.size, // VM size in bytes of this section - sect64.offset, // Offset to the data for this section in the file - sect64.offset ? sect64.size : 0, // Size in bytes of this section as found in the file - sect64.align, - load_cmd.flags)); // Flags for this section - segment_sp->SetIsFake(true); - segment_sp->SetPermissions(segment_permissions); - m_sections_ap->AddSection(segment_sp); - if (add_to_unified) - unified_section_list.AddSection(segment_sp); - segment_sp->SetIsEncrypted (segment_is_encrypted); - } - } - assert (segment_sp.get()); - - lldb::SectionType sect_type = eSectionTypeOther; - - if (sect64.flags & (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SOME_INSTRUCTIONS)) - sect_type = eSectionTypeCode; - else - { - uint32_t mach_sect_type = sect64.flags & SECTION_TYPE; - static ConstString g_sect_name_objc_data ("__objc_data"); - static ConstString g_sect_name_objc_msgrefs ("__objc_msgrefs"); - static ConstString g_sect_name_objc_selrefs ("__objc_selrefs"); - static ConstString g_sect_name_objc_classrefs ("__objc_classrefs"); - static ConstString g_sect_name_objc_superrefs ("__objc_superrefs"); - static ConstString g_sect_name_objc_const ("__objc_const"); - static ConstString g_sect_name_objc_classlist ("__objc_classlist"); - static ConstString g_sect_name_cfstring ("__cfstring"); - - static ConstString g_sect_name_dwarf_debug_abbrev ("__debug_abbrev"); - static ConstString g_sect_name_dwarf_debug_aranges ("__debug_aranges"); - static ConstString g_sect_name_dwarf_debug_frame ("__debug_frame"); - static ConstString g_sect_name_dwarf_debug_info ("__debug_info"); - static ConstString g_sect_name_dwarf_debug_line ("__debug_line"); - static ConstString g_sect_name_dwarf_debug_loc ("__debug_loc"); - static ConstString g_sect_name_dwarf_debug_macinfo ("__debug_macinfo"); - static ConstString g_sect_name_dwarf_debug_pubnames ("__debug_pubnames"); - static ConstString g_sect_name_dwarf_debug_pubtypes ("__debug_pubtypes"); - static ConstString g_sect_name_dwarf_debug_ranges ("__debug_ranges"); - static ConstString g_sect_name_dwarf_debug_str ("__debug_str"); - static ConstString g_sect_name_dwarf_apple_names ("__apple_names"); - static ConstString g_sect_name_dwarf_apple_types ("__apple_types"); - static ConstString g_sect_name_dwarf_apple_namespaces ("__apple_namespac"); - static ConstString g_sect_name_dwarf_apple_objc ("__apple_objc"); - static ConstString g_sect_name_eh_frame ("__eh_frame"); - static ConstString g_sect_name_compact_unwind ("__unwind_info"); - static ConstString g_sect_name_text ("__text"); - static ConstString g_sect_name_data ("__data"); - static ConstString g_sect_name_go_symtab ("__gosymtab"); - - if (section_name == g_sect_name_dwarf_debug_abbrev) - sect_type = eSectionTypeDWARFDebugAbbrev; - else if (section_name == g_sect_name_dwarf_debug_aranges) - sect_type = eSectionTypeDWARFDebugAranges; - else if (section_name == g_sect_name_dwarf_debug_frame) - sect_type = eSectionTypeDWARFDebugFrame; - else if (section_name == g_sect_name_dwarf_debug_info) - sect_type = eSectionTypeDWARFDebugInfo; - else if (section_name == g_sect_name_dwarf_debug_line) - sect_type = eSectionTypeDWARFDebugLine; - else if (section_name == g_sect_name_dwarf_debug_loc) - sect_type = eSectionTypeDWARFDebugLoc; - else if (section_name == g_sect_name_dwarf_debug_macinfo) - sect_type = eSectionTypeDWARFDebugMacInfo; - else if (section_name == g_sect_name_dwarf_debug_pubnames) - sect_type = eSectionTypeDWARFDebugPubNames; - else if (section_name == g_sect_name_dwarf_debug_pubtypes) - sect_type = eSectionTypeDWARFDebugPubTypes; - else if (section_name == g_sect_name_dwarf_debug_ranges) - sect_type = eSectionTypeDWARFDebugRanges; - else if (section_name == g_sect_name_dwarf_debug_str) - sect_type = eSectionTypeDWARFDebugStr; - else if (section_name == g_sect_name_dwarf_apple_names) - sect_type = eSectionTypeDWARFAppleNames; - else if (section_name == g_sect_name_dwarf_apple_types) - sect_type = eSectionTypeDWARFAppleTypes; - else if (section_name == g_sect_name_dwarf_apple_namespaces) - sect_type = eSectionTypeDWARFAppleNamespaces; - else if (section_name == g_sect_name_dwarf_apple_objc) - sect_type = eSectionTypeDWARFAppleObjC; - else if (section_name == g_sect_name_objc_selrefs) - sect_type = eSectionTypeDataCStringPointers; - else if (section_name == g_sect_name_objc_msgrefs) - sect_type = eSectionTypeDataObjCMessageRefs; - else if (section_name == g_sect_name_eh_frame) - sect_type = eSectionTypeEHFrame; - else if (section_name == g_sect_name_compact_unwind) - sect_type = eSectionTypeCompactUnwind; - else if (section_name == g_sect_name_cfstring) - sect_type = eSectionTypeDataObjCCFStrings; - else if (section_name == g_sect_name_go_symtab) - sect_type = eSectionTypeGoSymtab; - else if (section_name == g_sect_name_objc_data || - section_name == g_sect_name_objc_classrefs || - section_name == g_sect_name_objc_superrefs || - section_name == g_sect_name_objc_const || - section_name == g_sect_name_objc_classlist) - { - sect_type = eSectionTypeDataPointers; - } - - if (sect_type == eSectionTypeOther) - { - switch (mach_sect_type) - { - // TODO: categorize sections by other flags for regular sections - case S_REGULAR: - if (section_name == g_sect_name_text) - sect_type = eSectionTypeCode; - else if (section_name == g_sect_name_data) - sect_type = eSectionTypeData; - else - sect_type = eSectionTypeOther; - break; - case S_ZEROFILL: sect_type = eSectionTypeZeroFill; break; - case S_CSTRING_LITERALS: sect_type = eSectionTypeDataCString; break; // section with only literal C strings - case S_4BYTE_LITERALS: sect_type = eSectionTypeData4; break; // section with only 4 byte literals - case S_8BYTE_LITERALS: sect_type = eSectionTypeData8; break; // section with only 8 byte literals - case S_LITERAL_POINTERS: sect_type = eSectionTypeDataPointers; break; // section with only pointers to literals - case S_NON_LAZY_SYMBOL_POINTERS: sect_type = eSectionTypeDataPointers; break; // section with only non-lazy symbol pointers - case S_LAZY_SYMBOL_POINTERS: sect_type = eSectionTypeDataPointers; break; // section with only lazy symbol pointers - case S_SYMBOL_STUBS: sect_type = eSectionTypeCode; break; // section with only symbol stubs, byte size of stub in the reserved2 field - case S_MOD_INIT_FUNC_POINTERS: sect_type = eSectionTypeDataPointers; break; // section with only function pointers for initialization - case S_MOD_TERM_FUNC_POINTERS: sect_type = eSectionTypeDataPointers; break; // section with only function pointers for termination - case S_COALESCED: sect_type = eSectionTypeOther; break; - case S_GB_ZEROFILL: sect_type = eSectionTypeZeroFill; break; - case S_INTERPOSING: sect_type = eSectionTypeCode; break; // section with only pairs of function pointers for interposing - case S_16BYTE_LITERALS: sect_type = eSectionTypeData16; break; // section with only 16 byte literals - case S_DTRACE_DOF: sect_type = eSectionTypeDebug; break; - case S_LAZY_DYLIB_SYMBOL_POINTERS: sect_type = eSectionTypeDataPointers; break; - default: break; - } - } - } - SectionSP section_sp(new Section (segment_sp, - module_sp, - this, - ++sectID, - section_name, - sect_type, - sect64.addr - segment_sp->GetFileAddress(), - sect64.size, - sect64.offset, - sect64.offset == 0 ? 0 : sect64.size, - sect64.align, - sect64.flags)); - // Set the section to be encrypted to match the segment - - bool section_is_encrypted = false; - if (!segment_is_encrypted && load_cmd.filesize != 0) - section_is_encrypted = encrypted_file_ranges.FindEntryThatContains(sect64.offset) != NULL; - - section_sp->SetIsEncrypted (segment_is_encrypted || section_is_encrypted); - section_sp->SetPermissions(segment_permissions); - segment_sp->GetChildren().AddSection(section_sp); - - if (segment_sp->IsFake()) - { - segment_sp.reset(); - const_segname.Clear(); - } - } - } - if (segment_sp && is_dsym) - { - if (first_segment_sectID <= sectID) - { - lldb::user_id_t sect_uid; - for (sect_uid = first_segment_sectID; sect_uid <= sectID; ++sect_uid) - { - SectionSP curr_section_sp(segment_sp->GetChildren().FindSectionByID (sect_uid)); - SectionSP next_section_sp; - if (sect_uid + 1 <= sectID) - next_section_sp = segment_sp->GetChildren().FindSectionByID (sect_uid+1); - - if (curr_section_sp.get()) - { - if (curr_section_sp->GetByteSize() == 0) - { - if (next_section_sp.get() != NULL) - curr_section_sp->SetByteSize ( next_section_sp->GetFileAddress() - curr_section_sp->GetFileAddress() ); - else - curr_section_sp->SetByteSize ( load_cmd.vmsize ); - } - } - } - } - } + // Grow the section size as needed. + if (sect64.offset) { + const lldb::addr_t segment_min_file_offset = + segment->GetFileOffset(); + const lldb::addr_t segment_max_file_offset = + segment_min_file_offset + segment->GetFileSize(); + + const lldb::addr_t section_min_file_offset = + sect64.offset; + const lldb::addr_t section_max_file_offset = + section_min_file_offset + sect64.size; + const lldb::addr_t new_file_offset = std::min( + section_min_file_offset, segment_min_file_offset); + const lldb::addr_t new_file_size = + std::max(section_max_file_offset, + segment_max_file_offset) - + new_file_offset; + segment->SetFileOffset(new_file_offset); + segment->SetFileSize(new_file_size); + } + } else { + // Create a fake section for the section's named segment + segment_sp.reset(new Section( + segment_sp, // Parent section + module_sp, // Module to which this section belongs + this, // Object file to which this section belongs + ++segID << 8, // Section ID is the 1 based segment index + // shifted right by 8 bits as not to + // collide with any of the 256 section IDs + // that are possible + const_segname, // Name of this section + eSectionTypeContainer, // This section is a container of + // other sections. + sect64.addr, // File VM address == addresses as they are + // found in the object file + sect64.size, // VM size in bytes of this section + sect64.offset, // Offset to the data for this section in + // the file + sect64.offset ? sect64.size : 0, // Size in bytes of + // this section as + // found in the file + sect64.align, + load_cmd.flags)); // Flags for this section + segment_sp->SetIsFake(true); + segment_sp->SetPermissions(segment_permissions); + m_sections_ap->AddSection(segment_sp); + if (add_to_unified) + unified_section_list.AddSection(segment_sp); + segment_sp->SetIsEncrypted(segment_is_encrypted); + } + } + assert(segment_sp.get()); + + lldb::SectionType sect_type = eSectionTypeOther; + + if (sect64.flags & + (S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SOME_INSTRUCTIONS)) + sect_type = eSectionTypeCode; + else { + uint32_t mach_sect_type = sect64.flags & SECTION_TYPE; + static ConstString g_sect_name_objc_data("__objc_data"); + static ConstString g_sect_name_objc_msgrefs("__objc_msgrefs"); + static ConstString g_sect_name_objc_selrefs("__objc_selrefs"); + static ConstString g_sect_name_objc_classrefs( + "__objc_classrefs"); + static ConstString g_sect_name_objc_superrefs( + "__objc_superrefs"); + static ConstString g_sect_name_objc_const("__objc_const"); + static ConstString g_sect_name_objc_classlist( + "__objc_classlist"); + static ConstString g_sect_name_cfstring("__cfstring"); + + static ConstString g_sect_name_dwarf_debug_abbrev( + "__debug_abbrev"); + static ConstString g_sect_name_dwarf_debug_aranges( + "__debug_aranges"); + static ConstString g_sect_name_dwarf_debug_frame( + "__debug_frame"); + static ConstString g_sect_name_dwarf_debug_info( + "__debug_info"); + static ConstString g_sect_name_dwarf_debug_line( + "__debug_line"); + static ConstString g_sect_name_dwarf_debug_loc("__debug_loc"); + static ConstString g_sect_name_dwarf_debug_macinfo( + "__debug_macinfo"); + static ConstString g_sect_name_dwarf_debug_pubnames( + "__debug_pubnames"); + static ConstString g_sect_name_dwarf_debug_pubtypes( + "__debug_pubtypes"); + static ConstString g_sect_name_dwarf_debug_ranges( + "__debug_ranges"); + static ConstString g_sect_name_dwarf_debug_str("__debug_str"); + static ConstString g_sect_name_dwarf_apple_names( + "__apple_names"); + static ConstString g_sect_name_dwarf_apple_types( + "__apple_types"); + static ConstString g_sect_name_dwarf_apple_namespaces( + "__apple_namespac"); + static ConstString g_sect_name_dwarf_apple_objc( + "__apple_objc"); + static ConstString g_sect_name_eh_frame("__eh_frame"); + static ConstString g_sect_name_compact_unwind( + "__unwind_info"); + static ConstString g_sect_name_text("__text"); + static ConstString g_sect_name_data("__data"); + static ConstString g_sect_name_go_symtab("__gosymtab"); + + if (section_name == g_sect_name_dwarf_debug_abbrev) + sect_type = eSectionTypeDWARFDebugAbbrev; + else if (section_name == g_sect_name_dwarf_debug_aranges) + sect_type = eSectionTypeDWARFDebugAranges; + else if (section_name == g_sect_name_dwarf_debug_frame) + sect_type = eSectionTypeDWARFDebugFrame; + else if (section_name == g_sect_name_dwarf_debug_info) + sect_type = eSectionTypeDWARFDebugInfo; + else if (section_name == g_sect_name_dwarf_debug_line) + sect_type = eSectionTypeDWARFDebugLine; + else if (section_name == g_sect_name_dwarf_debug_loc) + sect_type = eSectionTypeDWARFDebugLoc; + else if (section_name == g_sect_name_dwarf_debug_macinfo) + sect_type = eSectionTypeDWARFDebugMacInfo; + else if (section_name == g_sect_name_dwarf_debug_pubnames) + sect_type = eSectionTypeDWARFDebugPubNames; + else if (section_name == g_sect_name_dwarf_debug_pubtypes) + sect_type = eSectionTypeDWARFDebugPubTypes; + else if (section_name == g_sect_name_dwarf_debug_ranges) + sect_type = eSectionTypeDWARFDebugRanges; + else if (section_name == g_sect_name_dwarf_debug_str) + sect_type = eSectionTypeDWARFDebugStr; + else if (section_name == g_sect_name_dwarf_apple_names) + sect_type = eSectionTypeDWARFAppleNames; + else if (section_name == g_sect_name_dwarf_apple_types) + sect_type = eSectionTypeDWARFAppleTypes; + else if (section_name == g_sect_name_dwarf_apple_namespaces) + sect_type = eSectionTypeDWARFAppleNamespaces; + else if (section_name == g_sect_name_dwarf_apple_objc) + sect_type = eSectionTypeDWARFAppleObjC; + else if (section_name == g_sect_name_objc_selrefs) + sect_type = eSectionTypeDataCStringPointers; + else if (section_name == g_sect_name_objc_msgrefs) + sect_type = eSectionTypeDataObjCMessageRefs; + else if (section_name == g_sect_name_eh_frame) + sect_type = eSectionTypeEHFrame; + else if (section_name == g_sect_name_compact_unwind) + sect_type = eSectionTypeCompactUnwind; + else if (section_name == g_sect_name_cfstring) + sect_type = eSectionTypeDataObjCCFStrings; + else if (section_name == g_sect_name_go_symtab) + sect_type = eSectionTypeGoSymtab; + else if (section_name == g_sect_name_objc_data || + section_name == g_sect_name_objc_classrefs || + section_name == g_sect_name_objc_superrefs || + section_name == g_sect_name_objc_const || + section_name == g_sect_name_objc_classlist) { + sect_type = eSectionTypeDataPointers; + } + + if (sect_type == eSectionTypeOther) { + switch (mach_sect_type) { + // TODO: categorize sections by other flags for regular + // sections + case S_REGULAR: + if (section_name == g_sect_name_text) + sect_type = eSectionTypeCode; + else if (section_name == g_sect_name_data) + sect_type = eSectionTypeData; + else + sect_type = eSectionTypeOther; + break; + case S_ZEROFILL: + sect_type = eSectionTypeZeroFill; + break; + case S_CSTRING_LITERALS: + sect_type = eSectionTypeDataCString; + break; // section with only literal C strings + case S_4BYTE_LITERALS: + sect_type = eSectionTypeData4; + break; // section with only 4 byte literals + case S_8BYTE_LITERALS: + sect_type = eSectionTypeData8; + break; // section with only 8 byte literals + case S_LITERAL_POINTERS: + sect_type = eSectionTypeDataPointers; + break; // section with only pointers to literals + case S_NON_LAZY_SYMBOL_POINTERS: + sect_type = eSectionTypeDataPointers; + break; // section with only non-lazy symbol pointers + case S_LAZY_SYMBOL_POINTERS: + sect_type = eSectionTypeDataPointers; + break; // section with only lazy symbol pointers + case S_SYMBOL_STUBS: + sect_type = eSectionTypeCode; + break; // section with only symbol stubs, byte size of + // stub in the reserved2 field + case S_MOD_INIT_FUNC_POINTERS: + sect_type = eSectionTypeDataPointers; + break; // section with only function pointers for + // initialization + case S_MOD_TERM_FUNC_POINTERS: + sect_type = eSectionTypeDataPointers; + break; // section with only function pointers for + // termination + case S_COALESCED: + sect_type = eSectionTypeOther; + break; + case S_GB_ZEROFILL: + sect_type = eSectionTypeZeroFill; + break; + case S_INTERPOSING: + sect_type = eSectionTypeCode; + break; // section with only pairs of function pointers for + // interposing + case S_16BYTE_LITERALS: + sect_type = eSectionTypeData16; + break; // section with only 16 byte literals + case S_DTRACE_DOF: + sect_type = eSectionTypeDebug; + break; + case S_LAZY_DYLIB_SYMBOL_POINTERS: + sect_type = eSectionTypeDataPointers; + break; + default: + break; } + } } + + SectionSP section_sp(new Section( + segment_sp, module_sp, this, ++sectID, section_name, + sect_type, sect64.addr - segment_sp->GetFileAddress(), + sect64.size, sect64.offset, + sect64.offset == 0 ? 0 : sect64.size, sect64.align, + sect64.flags)); + // Set the section to be encrypted to match the segment + + bool section_is_encrypted = false; + if (!segment_is_encrypted && load_cmd.filesize != 0) + section_is_encrypted = + encrypted_file_ranges.FindEntryThatContains( + sect64.offset) != NULL; + + section_sp->SetIsEncrypted(segment_is_encrypted || + section_is_encrypted); + section_sp->SetPermissions(segment_permissions); + segment_sp->GetChildren().AddSection(section_sp); + + if (segment_sp->IsFake()) { + segment_sp.reset(); + const_segname.Clear(); + } + } } - else if (load_cmd.cmd == LC_DYSYMTAB) - { - m_dysymtab.cmd = load_cmd.cmd; - m_dysymtab.cmdsize = load_cmd.cmdsize; - m_data.GetU32 (&offset, &m_dysymtab.ilocalsym, (sizeof(m_dysymtab) / sizeof(uint32_t)) - 2); + if (segment_sp && is_dsym) { + if (first_segment_sectID <= sectID) { + lldb::user_id_t sect_uid; + for (sect_uid = first_segment_sectID; sect_uid <= sectID; + ++sect_uid) { + SectionSP curr_section_sp( + segment_sp->GetChildren().FindSectionByID(sect_uid)); + SectionSP next_section_sp; + if (sect_uid + 1 <= sectID) + next_section_sp = + segment_sp->GetChildren().FindSectionByID(sect_uid + 1); + + if (curr_section_sp.get()) { + if (curr_section_sp->GetByteSize() == 0) { + if (next_section_sp.get() != NULL) + curr_section_sp->SetByteSize( + next_section_sp->GetFileAddress() - + curr_section_sp->GetFileAddress()); + else + curr_section_sp->SetByteSize(load_cmd.vmsize); + } + } + } + } } - - offset = load_cmd_offset + load_cmd.cmdsize; + } } + } else if (load_cmd.cmd == LC_DYSYMTAB) { + m_dysymtab.cmd = load_cmd.cmd; + m_dysymtab.cmdsize = load_cmd.cmdsize; + m_data.GetU32(&offset, &m_dysymtab.ilocalsym, + (sizeof(m_dysymtab) / sizeof(uint32_t)) - 2); + } + + offset = load_cmd_offset + load_cmd.cmdsize; + } - - if (section_file_addresses_changed && module_sp.get()) - { - module_sp->SectionFileAddressesChanged(); - } + if (section_file_addresses_changed && module_sp.get()) { + module_sp->SectionFileAddressesChanged(); } + } } -class MachSymtabSectionInfo -{ +class MachSymtabSectionInfo { public: - MachSymtabSectionInfo (SectionList *section_list) : - m_section_list (section_list), - m_section_infos() - { - // Get the number of sections down to a depth of 1 to include - // all segments and their sections, but no other sections that - // may be added for debug map or - m_section_infos.resize(section_list->GetNumSections(1)); - } - - SectionSP - GetSection (uint8_t n_sect, addr_t file_addr) - { - if (n_sect == 0) - return SectionSP(); - if (n_sect < m_section_infos.size()) - { - if (!m_section_infos[n_sect].section_sp) - { - SectionSP section_sp (m_section_list->FindSectionByID (n_sect)); - m_section_infos[n_sect].section_sp = section_sp; - if (section_sp) - { - m_section_infos[n_sect].vm_range.SetBaseAddress (section_sp->GetFileAddress()); - m_section_infos[n_sect].vm_range.SetByteSize (section_sp->GetByteSize()); - } - else - { - Host::SystemLog (Host::eSystemLogError, "error: unable to find section for section %u\n", n_sect); - } - } - if (m_section_infos[n_sect].vm_range.Contains(file_addr)) - { - // Symbol is in section. - return m_section_infos[n_sect].section_sp; - } - else if (m_section_infos[n_sect].vm_range.GetByteSize () == 0 && - m_section_infos[n_sect].vm_range.GetBaseAddress() == file_addr) - { - // Symbol is in section with zero size, but has the same start - // address as the section. This can happen with linker symbols - // (symbols that start with the letter 'l' or 'L'. - return m_section_infos[n_sect].section_sp; - } + MachSymtabSectionInfo(SectionList *section_list) + : m_section_list(section_list), m_section_infos() { + // Get the number of sections down to a depth of 1 to include + // all segments and their sections, but no other sections that + // may be added for debug map or + m_section_infos.resize(section_list->GetNumSections(1)); + } + + SectionSP GetSection(uint8_t n_sect, addr_t file_addr) { + if (n_sect == 0) + return SectionSP(); + if (n_sect < m_section_infos.size()) { + if (!m_section_infos[n_sect].section_sp) { + SectionSP section_sp(m_section_list->FindSectionByID(n_sect)); + m_section_infos[n_sect].section_sp = section_sp; + if (section_sp) { + m_section_infos[n_sect].vm_range.SetBaseAddress( + section_sp->GetFileAddress()); + m_section_infos[n_sect].vm_range.SetByteSize( + section_sp->GetByteSize()); + } else { + Host::SystemLog(Host::eSystemLogError, + "error: unable to find section for section %u\n", + n_sect); } - return m_section_list->FindSectionContainingFileAddress(file_addr); + } + if (m_section_infos[n_sect].vm_range.Contains(file_addr)) { + // Symbol is in section. + return m_section_infos[n_sect].section_sp; + } else if (m_section_infos[n_sect].vm_range.GetByteSize() == 0 && + m_section_infos[n_sect].vm_range.GetBaseAddress() == + file_addr) { + // Symbol is in section with zero size, but has the same start + // address as the section. This can happen with linker symbols + // (symbols that start with the letter 'l' or 'L'. + return m_section_infos[n_sect].section_sp; + } } + return m_section_list->FindSectionContainingFileAddress(file_addr); + } protected: - struct SectionInfo - { - SectionInfo () : - vm_range(), - section_sp () - { - } - - VMRange vm_range; - SectionSP section_sp; - }; - SectionList *m_section_list; - std::vector<SectionInfo> m_section_infos; + struct SectionInfo { + SectionInfo() : vm_range(), section_sp() {} + + VMRange vm_range; + SectionSP section_sp; + }; + SectionList *m_section_list; + std::vector<SectionInfo> m_section_infos; }; -struct TrieEntry -{ - TrieEntry () : - name(), - address(LLDB_INVALID_ADDRESS), - flags (0), - other(0), - import_name() - { - } - - void - Clear () - { - name.Clear(); - address = LLDB_INVALID_ADDRESS; - flags = 0; - other = 0; - import_name.Clear(); - } - - void - Dump () const - { - printf ("0x%16.16llx 0x%16.16llx 0x%16.16llx \"%s\"", - static_cast<unsigned long long>(address), - static_cast<unsigned long long>(flags), - static_cast<unsigned long long>(other), name.GetCString()); - if (import_name) - printf (" -> \"%s\"\n", import_name.GetCString()); - else - printf ("\n"); - } - ConstString name; - uint64_t address; - uint64_t flags; - uint64_t other; - ConstString import_name; +struct TrieEntry { + TrieEntry() + : name(), address(LLDB_INVALID_ADDRESS), flags(0), other(0), + import_name() {} + + void Clear() { + name.Clear(); + address = LLDB_INVALID_ADDRESS; + flags = 0; + other = 0; + import_name.Clear(); + } + + void Dump() const { + printf("0x%16.16llx 0x%16.16llx 0x%16.16llx \"%s\"", + static_cast<unsigned long long>(address), + static_cast<unsigned long long>(flags), + static_cast<unsigned long long>(other), name.GetCString()); + if (import_name) + printf(" -> \"%s\"\n", import_name.GetCString()); + else + printf("\n"); + } + ConstString name; + uint64_t address; + uint64_t flags; + uint64_t other; + ConstString import_name; }; -struct TrieEntryWithOffset -{ - lldb::offset_t nodeOffset; - TrieEntry entry; +struct TrieEntryWithOffset { + lldb::offset_t nodeOffset; + TrieEntry entry; - TrieEntryWithOffset (lldb::offset_t offset) : - nodeOffset (offset), - entry() - { - } + TrieEntryWithOffset(lldb::offset_t offset) : nodeOffset(offset), entry() {} - void - Dump (uint32_t idx) const - { - printf ("[%3u] 0x%16.16llx: ", idx, - static_cast<unsigned long long>(nodeOffset)); - entry.Dump(); - } + void Dump(uint32_t idx) const { + printf("[%3u] 0x%16.16llx: ", idx, + static_cast<unsigned long long>(nodeOffset)); + entry.Dump(); + } - bool - operator<(const TrieEntryWithOffset& other) const - { - return ( nodeOffset < other.nodeOffset ); - } + bool operator<(const TrieEntryWithOffset &other) const { + return (nodeOffset < other.nodeOffset); + } }; -static bool -ParseTrieEntries (DataExtractor &data, - lldb::offset_t offset, - const bool is_arm, - std::vector<llvm::StringRef> &nameSlices, - std::set<lldb::addr_t> &resolver_addresses, - std::vector<TrieEntryWithOffset>& output) -{ - if (!data.ValidOffset(offset)) - return true; - - const uint64_t terminalSize = data.GetULEB128(&offset); - lldb::offset_t children_offset = offset + terminalSize; - if ( terminalSize != 0 ) { - TrieEntryWithOffset e (offset); - e.entry.flags = data.GetULEB128(&offset); - const char *import_name = NULL; - if ( e.entry.flags & EXPORT_SYMBOL_FLAGS_REEXPORT ) { - e.entry.address = 0; - e.entry.other = data.GetULEB128(&offset); // dylib ordinal - import_name = data.GetCStr(&offset); - } - else { - e.entry.address = data.GetULEB128(&offset); - if ( e.entry.flags & EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER ) - { - e.entry.other = data.GetULEB128(&offset); - uint64_t resolver_addr = e.entry.other; - if (is_arm) - resolver_addr &= THUMB_ADDRESS_BIT_MASK; - resolver_addresses.insert(resolver_addr); - } - else - e.entry.other = 0; - } - // Only add symbols that are reexport symbols with a valid import name - if (EXPORT_SYMBOL_FLAGS_REEXPORT & e.entry.flags && import_name && import_name[0]) - { - std::string name; - if (!nameSlices.empty()) - { - for (auto name_slice: nameSlices) - name.append(name_slice.data(), name_slice.size()); - } - if (name.size() > 1) - { - // Skip the leading '_' - e.entry.name.SetCStringWithLength(name.c_str() + 1,name.size() - 1); - } - if (import_name) - { - // Skip the leading '_' - e.entry.import_name.SetCString(import_name+1); - } - output.push_back(e); - } - } - - const uint8_t childrenCount = data.GetU8(&children_offset); - for (uint8_t i=0; i < childrenCount; ++i) { - const char *cstr = data.GetCStr(&children_offset); - if (cstr) - nameSlices.push_back(llvm::StringRef(cstr)); - else - return false; // Corrupt data - lldb::offset_t childNodeOffset = data.GetULEB128(&children_offset); - if (childNodeOffset) - { - if (!ParseTrieEntries(data, - childNodeOffset, - is_arm, - nameSlices, - resolver_addresses, - output)) - { - return false; - } - } - nameSlices.pop_back(); - } +static bool ParseTrieEntries(DataExtractor &data, lldb::offset_t offset, + const bool is_arm, + std::vector<llvm::StringRef> &nameSlices, + std::set<lldb::addr_t> &resolver_addresses, + std::vector<TrieEntryWithOffset> &output) { + if (!data.ValidOffset(offset)) return true; + + const uint64_t terminalSize = data.GetULEB128(&offset); + lldb::offset_t children_offset = offset + terminalSize; + if (terminalSize != 0) { + TrieEntryWithOffset e(offset); + e.entry.flags = data.GetULEB128(&offset); + const char *import_name = NULL; + if (e.entry.flags & EXPORT_SYMBOL_FLAGS_REEXPORT) { + e.entry.address = 0; + e.entry.other = data.GetULEB128(&offset); // dylib ordinal + import_name = data.GetCStr(&offset); + } else { + e.entry.address = data.GetULEB128(&offset); + if (e.entry.flags & EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER) { + e.entry.other = data.GetULEB128(&offset); + uint64_t resolver_addr = e.entry.other; + if (is_arm) + resolver_addr &= THUMB_ADDRESS_BIT_MASK; + resolver_addresses.insert(resolver_addr); + } else + e.entry.other = 0; + } + // Only add symbols that are reexport symbols with a valid import name + if (EXPORT_SYMBOL_FLAGS_REEXPORT & e.entry.flags && import_name && + import_name[0]) { + std::string name; + if (!nameSlices.empty()) { + for (auto name_slice : nameSlices) + name.append(name_slice.data(), name_slice.size()); + } + if (name.size() > 1) { + // Skip the leading '_' + e.entry.name.SetCStringWithLength(name.c_str() + 1, name.size() - 1); + } + if (import_name) { + // Skip the leading '_' + e.entry.import_name.SetCString(import_name + 1); + } + output.push_back(e); + } + } + + const uint8_t childrenCount = data.GetU8(&children_offset); + for (uint8_t i = 0; i < childrenCount; ++i) { + const char *cstr = data.GetCStr(&children_offset); + if (cstr) + nameSlices.push_back(llvm::StringRef(cstr)); + else + return false; // Corrupt data + lldb::offset_t childNodeOffset = data.GetULEB128(&children_offset); + if (childNodeOffset) { + if (!ParseTrieEntries(data, childNodeOffset, is_arm, nameSlices, + resolver_addresses, output)) { + return false; + } + } + nameSlices.pop_back(); + } + return true; } // Read the UUID out of a dyld_shared_cache file on-disk. -UUID -ObjectFileMachO::GetSharedCacheUUID (FileSpec dyld_shared_cache, const ByteOrder byte_order, const uint32_t addr_byte_size) -{ - UUID dsc_uuid; - DataBufferSP dsc_data_sp = dyld_shared_cache.MemoryMapFileContentsIfLocal(0, sizeof(struct lldb_copy_dyld_cache_header_v1)); - if (dsc_data_sp) - { - DataExtractor dsc_header_data (dsc_data_sp, byte_order, addr_byte_size); - - char version_str[7]; - lldb::offset_t offset = 0; - memcpy (version_str, dsc_header_data.GetData (&offset, 6), 6); - version_str[6] = '\0'; - if (strcmp (version_str, "dyld_v") == 0) - { - offset = offsetof (struct lldb_copy_dyld_cache_header_v1, uuid); - uint8_t uuid_bytes[sizeof (uuid_t)]; - memcpy (uuid_bytes, dsc_header_data.GetData (&offset, sizeof (uuid_t)), sizeof (uuid_t)); - dsc_uuid.SetBytes (uuid_bytes); - } +UUID ObjectFileMachO::GetSharedCacheUUID(FileSpec dyld_shared_cache, + const ByteOrder byte_order, + const uint32_t addr_byte_size) { + UUID dsc_uuid; + DataBufferSP dsc_data_sp = dyld_shared_cache.MemoryMapFileContentsIfLocal( + 0, sizeof(struct lldb_copy_dyld_cache_header_v1)); + if (dsc_data_sp) { + DataExtractor dsc_header_data(dsc_data_sp, byte_order, addr_byte_size); + + char version_str[7]; + lldb::offset_t offset = 0; + memcpy(version_str, dsc_header_data.GetData(&offset, 6), 6); + version_str[6] = '\0'; + if (strcmp(version_str, "dyld_v") == 0) { + offset = offsetof(struct lldb_copy_dyld_cache_header_v1, uuid); + uint8_t uuid_bytes[sizeof(uuid_t)]; + memcpy(uuid_bytes, dsc_header_data.GetData(&offset, sizeof(uuid_t)), + sizeof(uuid_t)); + dsc_uuid.SetBytes(uuid_bytes); } - return dsc_uuid; + } + return dsc_uuid; } -size_t -ObjectFileMachO::ParseSymtab () -{ - Timer scoped_timer(__PRETTY_FUNCTION__, - "ObjectFileMachO::ParseSymtab () module = %s", - m_file.GetFilename().AsCString("")); - ModuleSP module_sp (GetModule()); - if (!module_sp) - return 0; - - struct symtab_command symtab_load_command = { 0, 0, 0, 0, 0, 0 }; - struct linkedit_data_command function_starts_load_command = { 0, 0, 0, 0 }; - struct dyld_info_command dyld_info = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; - typedef AddressDataArray<lldb::addr_t, bool, 100> FunctionStarts; - FunctionStarts function_starts; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - uint32_t i; - FileSpecList dylib_files; - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_SYMBOLS)); - static const llvm::StringRef g_objc_v2_prefix_class ("_OBJC_CLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_metaclass ("_OBJC_METACLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_ivar ("_OBJC_IVAR_$_"); - - for (i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t cmd_offset = offset; - // Read in the load command and load command size - struct load_command lc; - if (m_data.GetU32(&offset, &lc, 2) == NULL) - break; - // Watch for the symbol table load command - switch (lc.cmd) - { - case LC_SYMTAB: - symtab_load_command.cmd = lc.cmd; - symtab_load_command.cmdsize = lc.cmdsize; - // Read in the rest of the symtab load command - if (m_data.GetU32(&offset, &symtab_load_command.symoff, 4) == 0) // fill in symoff, nsyms, stroff, strsize fields - return 0; - if (symtab_load_command.symoff == 0) - { - if (log) - module_sp->LogMessage(log, "LC_SYMTAB.symoff == 0"); - return 0; - } - - if (symtab_load_command.stroff == 0) - { - if (log) - module_sp->LogMessage(log, "LC_SYMTAB.stroff == 0"); - return 0; - } - - if (symtab_load_command.nsyms == 0) - { - if (log) - module_sp->LogMessage(log, "LC_SYMTAB.nsyms == 0"); - return 0; - } - - if (symtab_load_command.strsize == 0) - { - if (log) - module_sp->LogMessage(log, "LC_SYMTAB.strsize == 0"); - return 0; - } - break; - - case LC_DYLD_INFO: - case LC_DYLD_INFO_ONLY: - if (m_data.GetU32(&offset, &dyld_info.rebase_off, 10)) - { - dyld_info.cmd = lc.cmd; - dyld_info.cmdsize = lc.cmdsize; - } - else - { - memset (&dyld_info, 0, sizeof(dyld_info)); - } - break; +size_t ObjectFileMachO::ParseSymtab() { + Timer scoped_timer(LLVM_PRETTY_FUNCTION, + "ObjectFileMachO::ParseSymtab () module = %s", + m_file.GetFilename().AsCString("")); + ModuleSP module_sp(GetModule()); + if (!module_sp) + return 0; - case LC_LOAD_DYLIB: - case LC_LOAD_WEAK_DYLIB: - case LC_REEXPORT_DYLIB: - case LC_LOADFVMLIB: - case LC_LOAD_UPWARD_DYLIB: - { - uint32_t name_offset = cmd_offset + m_data.GetU32(&offset); - const char *path = m_data.PeekCStr(name_offset); - if (path) - { - FileSpec file_spec(path, false); - // Strip the path if there is @rpath, @executable, etc so we just use the basename - if (path[0] == '@') - file_spec.GetDirectory().Clear(); - - if (lc.cmd == LC_REEXPORT_DYLIB) - { - m_reexported_dylibs.AppendIfUnique(file_spec); - } + struct symtab_command symtab_load_command = {0, 0, 0, 0, 0, 0}; + struct linkedit_data_command function_starts_load_command = {0, 0, 0, 0}; + struct dyld_info_command dyld_info = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + typedef AddressDataArray<lldb::addr_t, bool, 100> FunctionStarts; + FunctionStarts function_starts; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + uint32_t i; + FileSpecList dylib_files; + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_SYMBOLS)); + static const llvm::StringRef g_objc_v2_prefix_class("_OBJC_CLASS_$_"); + static const llvm::StringRef g_objc_v2_prefix_metaclass("_OBJC_METACLASS_$_"); + static const llvm::StringRef g_objc_v2_prefix_ivar("_OBJC_IVAR_$_"); + + for (i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t cmd_offset = offset; + // Read in the load command and load command size + struct load_command lc; + if (m_data.GetU32(&offset, &lc, 2) == NULL) + break; + // Watch for the symbol table load command + switch (lc.cmd) { + case LC_SYMTAB: + symtab_load_command.cmd = lc.cmd; + symtab_load_command.cmdsize = lc.cmdsize; + // Read in the rest of the symtab load command + if (m_data.GetU32(&offset, &symtab_load_command.symoff, 4) == + 0) // fill in symoff, nsyms, stroff, strsize fields + return 0; + if (symtab_load_command.symoff == 0) { + if (log) + module_sp->LogMessage(log, "LC_SYMTAB.symoff == 0"); + return 0; + } - dylib_files.Append(file_spec); - } - } - break; + if (symtab_load_command.stroff == 0) { + if (log) + module_sp->LogMessage(log, "LC_SYMTAB.stroff == 0"); + return 0; + } - case LC_FUNCTION_STARTS: - function_starts_load_command.cmd = lc.cmd; - function_starts_load_command.cmdsize = lc.cmdsize; - if (m_data.GetU32(&offset, &function_starts_load_command.dataoff, 2) == NULL) // fill in symoff, nsyms, stroff, strsize fields - memset (&function_starts_load_command, 0, sizeof(function_starts_load_command)); - break; + if (symtab_load_command.nsyms == 0) { + if (log) + module_sp->LogMessage(log, "LC_SYMTAB.nsyms == 0"); + return 0; + } - default: - break; + if (symtab_load_command.strsize == 0) { + if (log) + module_sp->LogMessage(log, "LC_SYMTAB.strsize == 0"); + return 0; + } + break; + + case LC_DYLD_INFO: + case LC_DYLD_INFO_ONLY: + if (m_data.GetU32(&offset, &dyld_info.rebase_off, 10)) { + dyld_info.cmd = lc.cmd; + dyld_info.cmdsize = lc.cmdsize; + } else { + memset(&dyld_info, 0, sizeof(dyld_info)); + } + break; + + case LC_LOAD_DYLIB: + case LC_LOAD_WEAK_DYLIB: + case LC_REEXPORT_DYLIB: + case LC_LOADFVMLIB: + case LC_LOAD_UPWARD_DYLIB: { + uint32_t name_offset = cmd_offset + m_data.GetU32(&offset); + const char *path = m_data.PeekCStr(name_offset); + if (path) { + FileSpec file_spec(path, false); + // Strip the path if there is @rpath, @executable, etc so we just use + // the basename + if (path[0] == '@') + file_spec.GetDirectory().Clear(); + + if (lc.cmd == LC_REEXPORT_DYLIB) { + m_reexported_dylibs.AppendIfUnique(file_spec); } - offset = cmd_offset + lc.cmdsize; - } - - if (symtab_load_command.cmd) - { - Symtab *symtab = m_symtab_ap.get(); - SectionList *section_list = GetSectionList(); - if (section_list == NULL) - return 0; - - const uint32_t addr_byte_size = m_data.GetAddressByteSize(); - const ByteOrder byte_order = m_data.GetByteOrder(); - bool bit_width_32 = addr_byte_size == 4; - const size_t nlist_byte_size = bit_width_32 ? sizeof(struct nlist) : sizeof(struct nlist_64); - - DataExtractor nlist_data (NULL, 0, byte_order, addr_byte_size); - DataExtractor strtab_data (NULL, 0, byte_order, addr_byte_size); - DataExtractor function_starts_data (NULL, 0, byte_order, addr_byte_size); - DataExtractor indirect_symbol_index_data (NULL, 0, byte_order, addr_byte_size); - DataExtractor dyld_trie_data (NULL, 0, byte_order, addr_byte_size); - - const addr_t nlist_data_byte_size = symtab_load_command.nsyms * nlist_byte_size; - const addr_t strtab_data_byte_size = symtab_load_command.strsize; - addr_t strtab_addr = LLDB_INVALID_ADDRESS; - - ProcessSP process_sp (m_process_wp.lock()); - Process *process = process_sp.get(); - - uint32_t memory_module_load_level = eMemoryModuleLoadLevelComplete; - - if (process && m_header.filetype != llvm::MachO::MH_OBJECT) - { - Target &target = process->GetTarget(); - - memory_module_load_level = target.GetMemoryModuleLoadLevel(); - - SectionSP linkedit_section_sp(section_list->FindSectionByName(GetSegmentNameLINKEDIT())); - // Reading mach file from memory in a process or core file... - - if (linkedit_section_sp) - { - addr_t linkedit_load_addr = linkedit_section_sp->GetLoadBaseAddress(&target); - if (linkedit_load_addr == LLDB_INVALID_ADDRESS) - { - // We might be trying to access the symbol table before the __LINKEDIT's load - // address has been set in the target. We can't fail to read the symbol table, - // so calculate the right address manually - linkedit_load_addr = CalculateSectionLoadAddressForMemoryImage(m_memory_addr, GetMachHeaderSection(), linkedit_section_sp.get()); - } - - const addr_t linkedit_file_offset = linkedit_section_sp->GetFileOffset(); - const addr_t symoff_addr = linkedit_load_addr + symtab_load_command.symoff - linkedit_file_offset; - strtab_addr = linkedit_load_addr + symtab_load_command.stroff - linkedit_file_offset; - - bool data_was_read = false; - -#if defined (__APPLE__) && (defined (__arm__) || defined (__arm64__) || defined (__aarch64__)) - if (m_header.flags & 0x80000000u && process->GetAddressByteSize() == sizeof (void*)) - { - // This mach-o memory file is in the dyld shared cache. If this - // program is not remote and this is iOS, then this process will - // share the same shared cache as the process we are debugging and - // we can read the entire __LINKEDIT from the address space in this - // process. This is a needed optimization that is used for local iOS - // debugging only since all shared libraries in the shared cache do - // not have corresponding files that exist in the file system of the - // device. They have been combined into a single file. This means we - // always have to load these files from memory. All of the symbol and - // string tables from all of the __LINKEDIT sections from the shared - // libraries in the shared cache have been merged into a single large - // symbol and string table. Reading all of this symbol and string table - // data across can slow down debug launch times, so we optimize this by - // reading the memory for the __LINKEDIT section from this process. - - UUID lldb_shared_cache(GetLLDBSharedCacheUUID()); - UUID process_shared_cache(GetProcessSharedCacheUUID(process)); - bool use_lldb_cache = true; - if (lldb_shared_cache.IsValid() && process_shared_cache.IsValid() && lldb_shared_cache != process_shared_cache) - { - use_lldb_cache = false; - ModuleSP module_sp (GetModule()); - if (module_sp) - module_sp->ReportWarning ("shared cache in process does not match lldb's own shared cache, startup will be slow."); - } - - PlatformSP platform_sp (target.GetPlatform()); - if (platform_sp && platform_sp->IsHost() && use_lldb_cache) - { - data_was_read = true; - nlist_data.SetData((void *)symoff_addr, nlist_data_byte_size, eByteOrderLittle); - strtab_data.SetData((void *)strtab_addr, strtab_data_byte_size, eByteOrderLittle); - if (function_starts_load_command.cmd) - { - const addr_t func_start_addr = linkedit_load_addr + function_starts_load_command.dataoff - linkedit_file_offset; - function_starts_data.SetData ((void *)func_start_addr, function_starts_load_command.datasize, eByteOrderLittle); - } - } - } -#endif + dylib_files.Append(file_spec); + } + } break; + + case LC_FUNCTION_STARTS: + function_starts_load_command.cmd = lc.cmd; + function_starts_load_command.cmdsize = lc.cmdsize; + if (m_data.GetU32(&offset, &function_starts_load_command.dataoff, 2) == + NULL) // fill in symoff, nsyms, stroff, strsize fields + memset(&function_starts_load_command, 0, + sizeof(function_starts_load_command)); + break; + + default: + break; + } + offset = cmd_offset + lc.cmdsize; + } - if (!data_was_read) - { - if (memory_module_load_level == eMemoryModuleLoadLevelComplete) - { - DataBufferSP nlist_data_sp (ReadMemory (process_sp, symoff_addr, nlist_data_byte_size)); - if (nlist_data_sp) - nlist_data.SetData (nlist_data_sp, 0, nlist_data_sp->GetByteSize()); - // Load strings individually from memory when loading from memory since shared cache - // string tables contain strings for all symbols from all shared cached libraries - //DataBufferSP strtab_data_sp (ReadMemory (process_sp, strtab_addr, strtab_data_byte_size)); - //if (strtab_data_sp) - // strtab_data.SetData (strtab_data_sp, 0, strtab_data_sp->GetByteSize()); - if (m_dysymtab.nindirectsyms != 0) - { - const addr_t indirect_syms_addr = linkedit_load_addr + m_dysymtab.indirectsymoff - linkedit_file_offset; - DataBufferSP indirect_syms_data_sp (ReadMemory (process_sp, indirect_syms_addr, m_dysymtab.nindirectsyms * 4)); - if (indirect_syms_data_sp) - indirect_symbol_index_data.SetData (indirect_syms_data_sp, 0, indirect_syms_data_sp->GetByteSize()); - } - } - - if (memory_module_load_level >= eMemoryModuleLoadLevelPartial) - { - if (function_starts_load_command.cmd) - { - const addr_t func_start_addr = linkedit_load_addr + function_starts_load_command.dataoff - linkedit_file_offset; - DataBufferSP func_start_data_sp (ReadMemory (process_sp, func_start_addr, function_starts_load_command.datasize)); - if (func_start_data_sp) - function_starts_data.SetData (func_start_data_sp, 0, func_start_data_sp->GetByteSize()); - } - } - } - } + if (symtab_load_command.cmd) { + Symtab *symtab = m_symtab_ap.get(); + SectionList *section_list = GetSectionList(); + if (section_list == NULL) + return 0; + + const uint32_t addr_byte_size = m_data.GetAddressByteSize(); + const ByteOrder byte_order = m_data.GetByteOrder(); + bool bit_width_32 = addr_byte_size == 4; + const size_t nlist_byte_size = + bit_width_32 ? sizeof(struct nlist) : sizeof(struct nlist_64); + + DataExtractor nlist_data(NULL, 0, byte_order, addr_byte_size); + DataExtractor strtab_data(NULL, 0, byte_order, addr_byte_size); + DataExtractor function_starts_data(NULL, 0, byte_order, addr_byte_size); + DataExtractor indirect_symbol_index_data(NULL, 0, byte_order, + addr_byte_size); + DataExtractor dyld_trie_data(NULL, 0, byte_order, addr_byte_size); + + const addr_t nlist_data_byte_size = + symtab_load_command.nsyms * nlist_byte_size; + const addr_t strtab_data_byte_size = symtab_load_command.strsize; + addr_t strtab_addr = LLDB_INVALID_ADDRESS; + + ProcessSP process_sp(m_process_wp.lock()); + Process *process = process_sp.get(); + + uint32_t memory_module_load_level = eMemoryModuleLoadLevelComplete; + + if (process && m_header.filetype != llvm::MachO::MH_OBJECT) { + Target &target = process->GetTarget(); + + memory_module_load_level = target.GetMemoryModuleLoadLevel(); + + SectionSP linkedit_section_sp( + section_list->FindSectionByName(GetSegmentNameLINKEDIT())); + // Reading mach file from memory in a process or core file... + + if (linkedit_section_sp) { + addr_t linkedit_load_addr = + linkedit_section_sp->GetLoadBaseAddress(&target); + if (linkedit_load_addr == LLDB_INVALID_ADDRESS) { + // We might be trying to access the symbol table before the + // __LINKEDIT's load + // address has been set in the target. We can't fail to read the + // symbol table, + // so calculate the right address manually + linkedit_load_addr = CalculateSectionLoadAddressForMemoryImage( + m_memory_addr, GetMachHeaderSection(), linkedit_section_sp.get()); } - else - { - nlist_data.SetData (m_data, - symtab_load_command.symoff, - nlist_data_byte_size); - strtab_data.SetData (m_data, - symtab_load_command.stroff, - strtab_data_byte_size); - - if (dyld_info.export_size > 0) - { - dyld_trie_data.SetData (m_data, - dyld_info.export_off, - dyld_info.export_size); - } - if (m_dysymtab.nindirectsyms != 0) - { - indirect_symbol_index_data.SetData (m_data, - m_dysymtab.indirectsymoff, - m_dysymtab.nindirectsyms * 4); - } - if (function_starts_load_command.cmd) - { - function_starts_data.SetData (m_data, - function_starts_load_command.dataoff, - function_starts_load_command.datasize); + const addr_t linkedit_file_offset = + linkedit_section_sp->GetFileOffset(); + const addr_t symoff_addr = linkedit_load_addr + + symtab_load_command.symoff - + linkedit_file_offset; + strtab_addr = linkedit_load_addr + symtab_load_command.stroff - + linkedit_file_offset; + + bool data_was_read = false; + +#if defined(__APPLE__) && \ + (defined(__arm__) || defined(__arm64__) || defined(__aarch64__)) + if (m_header.flags & 0x80000000u && + process->GetAddressByteSize() == sizeof(void *)) { + // This mach-o memory file is in the dyld shared cache. If this + // program is not remote and this is iOS, then this process will + // share the same shared cache as the process we are debugging and + // we can read the entire __LINKEDIT from the address space in this + // process. This is a needed optimization that is used for local iOS + // debugging only since all shared libraries in the shared cache do + // not have corresponding files that exist in the file system of the + // device. They have been combined into a single file. This means we + // always have to load these files from memory. All of the symbol and + // string tables from all of the __LINKEDIT sections from the shared + // libraries in the shared cache have been merged into a single large + // symbol and string table. Reading all of this symbol and string + // table + // data across can slow down debug launch times, so we optimize this + // by + // reading the memory for the __LINKEDIT section from this process. + + UUID lldb_shared_cache(GetLLDBSharedCacheUUID()); + UUID process_shared_cache(GetProcessSharedCacheUUID(process)); + bool use_lldb_cache = true; + if (lldb_shared_cache.IsValid() && process_shared_cache.IsValid() && + lldb_shared_cache != process_shared_cache) { + use_lldb_cache = false; + ModuleSP module_sp(GetModule()); + if (module_sp) + module_sp->ReportWarning("shared cache in process does not match " + "lldb's own shared cache, startup will " + "be slow."); + } + + PlatformSP platform_sp(target.GetPlatform()); + if (platform_sp && platform_sp->IsHost() && use_lldb_cache) { + data_was_read = true; + nlist_data.SetData((void *)symoff_addr, nlist_data_byte_size, + eByteOrderLittle); + strtab_data.SetData((void *)strtab_addr, strtab_data_byte_size, + eByteOrderLittle); + if (function_starts_load_command.cmd) { + const addr_t func_start_addr = + linkedit_load_addr + function_starts_load_command.dataoff - + linkedit_file_offset; + function_starts_data.SetData( + (void *)func_start_addr, + function_starts_load_command.datasize, eByteOrderLittle); } + } } +#endif - if (nlist_data.GetByteSize() == 0 && memory_module_load_level == eMemoryModuleLoadLevelComplete) - { - if (log) - module_sp->LogMessage(log, "failed to read nlist data"); - return 0; - } - - const bool have_strtab_data = strtab_data.GetByteSize() > 0; - if (!have_strtab_data) - { - if (process) - { - if (strtab_addr == LLDB_INVALID_ADDRESS) - { - if (log) - module_sp->LogMessage(log, "failed to locate the strtab in memory"); - return 0; - } + if (!data_was_read) { + // Always load dyld - the dynamic linker - from memory if we didn't + // find a binary anywhere else. + // lldb will not register dylib/framework/bundle loads/unloads if we + // don't have the dyld symbols, + // we force dyld to load from memory despite the user's + // target.memory-module-load-level setting. + if (memory_module_load_level == eMemoryModuleLoadLevelComplete || + m_header.filetype == llvm::MachO::MH_DYLINKER) { + DataBufferSP nlist_data_sp( + ReadMemory(process_sp, symoff_addr, nlist_data_byte_size)); + if (nlist_data_sp) + nlist_data.SetData(nlist_data_sp, 0, + nlist_data_sp->GetByteSize()); + // Load strings individually from memory when loading from memory + // since shared cache + // string tables contain strings for all symbols from all shared + // cached libraries + // DataBufferSP strtab_data_sp (ReadMemory (process_sp, strtab_addr, + // strtab_data_byte_size)); + // if (strtab_data_sp) + // strtab_data.SetData (strtab_data_sp, 0, + // strtab_data_sp->GetByteSize()); + if (m_dysymtab.nindirectsyms != 0) { + const addr_t indirect_syms_addr = linkedit_load_addr + + m_dysymtab.indirectsymoff - + linkedit_file_offset; + DataBufferSP indirect_syms_data_sp( + ReadMemory(process_sp, indirect_syms_addr, + m_dysymtab.nindirectsyms * 4)); + if (indirect_syms_data_sp) + indirect_symbol_index_data.SetData( + indirect_syms_data_sp, 0, + indirect_syms_data_sp->GetByteSize()); } - else - { - if (log) - module_sp->LogMessage(log, "failed to read strtab data"); - return 0; + } else if (memory_module_load_level >= + eMemoryModuleLoadLevelPartial) { + if (function_starts_load_command.cmd) { + const addr_t func_start_addr = + linkedit_load_addr + function_starts_load_command.dataoff - + linkedit_file_offset; + DataBufferSP func_start_data_sp( + ReadMemory(process_sp, func_start_addr, + function_starts_load_command.datasize)); + if (func_start_data_sp) + function_starts_data.SetData(func_start_data_sp, 0, + func_start_data_sp->GetByteSize()); } + } } + } + } else { + nlist_data.SetData(m_data, symtab_load_command.symoff, + nlist_data_byte_size); + strtab_data.SetData(m_data, symtab_load_command.stroff, + strtab_data_byte_size); + + if (dyld_info.export_size > 0) { + dyld_trie_data.SetData(m_data, dyld_info.export_off, + dyld_info.export_size); + } + + if (m_dysymtab.nindirectsyms != 0) { + indirect_symbol_index_data.SetData(m_data, m_dysymtab.indirectsymoff, + m_dysymtab.nindirectsyms * 4); + } + if (function_starts_load_command.cmd) { + function_starts_data.SetData(m_data, + function_starts_load_command.dataoff, + function_starts_load_command.datasize); + } + } - const ConstString &g_segment_name_TEXT = GetSegmentNameTEXT(); - const ConstString &g_segment_name_DATA = GetSegmentNameDATA(); - const ConstString &g_segment_name_DATA_DIRTY = GetSegmentNameDATA_DIRTY(); - const ConstString &g_segment_name_DATA_CONST = GetSegmentNameDATA_CONST(); - const ConstString &g_segment_name_OBJC = GetSegmentNameOBJC(); - const ConstString &g_section_name_eh_frame = GetSectionNameEHFrame(); - SectionSP text_section_sp(section_list->FindSectionByName(g_segment_name_TEXT)); - SectionSP data_section_sp(section_list->FindSectionByName(g_segment_name_DATA)); - SectionSP data_dirty_section_sp(section_list->FindSectionByName(g_segment_name_DATA_DIRTY)); - SectionSP data_const_section_sp(section_list->FindSectionByName(g_segment_name_DATA_CONST)); - SectionSP objc_section_sp(section_list->FindSectionByName(g_segment_name_OBJC)); - SectionSP eh_frame_section_sp; - if (text_section_sp.get()) - eh_frame_section_sp = text_section_sp->GetChildren().FindSectionByName (g_section_name_eh_frame); - else - eh_frame_section_sp = section_list->FindSectionByName (g_section_name_eh_frame); - - const bool is_arm = (m_header.cputype == llvm::MachO::CPU_TYPE_ARM); - - // lldb works best if it knows the start address of all functions in a module. - // Linker symbols or debug info are normally the best source of information for start addr / size but - // they may be stripped in a released binary. - // Two additional sources of information exist in Mach-O binaries: - // LC_FUNCTION_STARTS - a list of ULEB128 encoded offsets of each function's start address in the - // binary, relative to the text section. - // eh_frame - the eh_frame FDEs have the start addr & size of each function - // LC_FUNCTION_STARTS is the fastest source to read in, and is present on all modern binaries. - // Binaries built to run on older releases may need to use eh_frame information. - - if (text_section_sp && function_starts_data.GetByteSize()) - { - FunctionStarts::Entry function_start_entry; - function_start_entry.data = false; - lldb::offset_t function_start_offset = 0; - function_start_entry.addr = text_section_sp->GetFileAddress(); - uint64_t delta; - while ((delta = function_starts_data.GetULEB128(&function_start_offset)) > 0) - { - // Now append the current entry - function_start_entry.addr += delta; - function_starts.Append(function_start_entry); - } - } - else - { - // If m_type is eTypeDebugInfo, then this is a dSYM - it will have the load command claiming an eh_frame - // but it doesn't actually have the eh_frame content. And if we have a dSYM, we don't need to do any - // of this fill-in-the-missing-symbols works anyway - the debug info should give us all the functions in - // the module. - if (text_section_sp.get() && eh_frame_section_sp.get() && m_type != eTypeDebugInfo) - { - DWARFCallFrameInfo eh_frame(*this, eh_frame_section_sp, eRegisterKindEHFrame, true); - DWARFCallFrameInfo::FunctionAddressAndSizeVector functions; - eh_frame.GetFunctionAddressAndSizeVector (functions); - addr_t text_base_addr = text_section_sp->GetFileAddress(); - size_t count = functions.GetSize(); - for (size_t i = 0; i < count; ++i) - { - const DWARFCallFrameInfo::FunctionAddressAndSizeVector::Entry *func = functions.GetEntryAtIndex (i); - if (func) - { - FunctionStarts::Entry function_start_entry; - function_start_entry.addr = func->base - text_base_addr; - function_starts.Append(function_start_entry); - } - } - } - } + if (nlist_data.GetByteSize() == 0 && + memory_module_load_level == eMemoryModuleLoadLevelComplete) { + if (log) + module_sp->LogMessage(log, "failed to read nlist data"); + return 0; + } - const size_t function_starts_count = function_starts.GetSize(); - - // For user process binaries (executables, dylibs, frameworks, bundles), if we don't have - // LC_FUNCTION_STARTS/eh_frame section in this binary, we're going to assume the binary - // has been stripped. Don't allow assembly language instruction emulation because we don't - // know proper function start boundaries. - // - // For all other types of binaries (kernels, stand-alone bare board binaries, kexts), they - // may not have LC_FUNCTION_STARTS / eh_frame sections - we should not make any assumptions - // about them based on that. - if (function_starts_count == 0 && CalculateStrata() == eStrataUser) - { - m_allow_assembly_emulation_unwind_plans = false; - Log *unwind_or_symbol_log (lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SYMBOLS | LIBLLDB_LOG_UNWIND)); - - if (unwind_or_symbol_log) - module_sp->LogMessage(unwind_or_symbol_log, "no LC_FUNCTION_STARTS, will not allow assembly profiled unwinds"); + const bool have_strtab_data = strtab_data.GetByteSize() > 0; + if (!have_strtab_data) { + if (process) { + if (strtab_addr == LLDB_INVALID_ADDRESS) { + if (log) + module_sp->LogMessage(log, "failed to locate the strtab in memory"); + return 0; } + } else { + if (log) + module_sp->LogMessage(log, "failed to read strtab data"); + return 0; + } + } - const user_id_t TEXT_eh_frame_sectID = - eh_frame_section_sp.get() ? eh_frame_section_sp->GetID() - : static_cast<user_id_t>(NO_SECT); - - lldb::offset_t nlist_data_offset = 0; - - uint32_t N_SO_index = UINT32_MAX; - - MachSymtabSectionInfo section_info (section_list); - std::vector<uint32_t> N_FUN_indexes; - std::vector<uint32_t> N_NSYM_indexes; - std::vector<uint32_t> N_INCL_indexes; - std::vector<uint32_t> N_BRAC_indexes; - std::vector<uint32_t> N_COMM_indexes; - typedef std::multimap <uint64_t, uint32_t> ValueToSymbolIndexMap; - typedef std::map <uint32_t, uint32_t> NListIndexToSymbolIndexMap; - typedef std::map <const char *, uint32_t> ConstNameToSymbolIndexMap; - ValueToSymbolIndexMap N_FUN_addr_to_sym_idx; - ValueToSymbolIndexMap N_STSYM_addr_to_sym_idx; - ConstNameToSymbolIndexMap N_GSYM_name_to_sym_idx; - // Any symbols that get merged into another will get an entry - // in this map so we know - NListIndexToSymbolIndexMap m_nlist_idx_to_sym_idx; - uint32_t nlist_idx = 0; - Symbol *symbol_ptr = NULL; - - uint32_t sym_idx = 0; - Symbol *sym = NULL; - size_t num_syms = 0; - std::string memory_symbol_name; - uint32_t unmapped_local_symbols_found = 0; - - std::vector<TrieEntryWithOffset> trie_entries; - std::set<lldb::addr_t> resolver_addresses; - - if (dyld_trie_data.GetByteSize() > 0) - { - std::vector<llvm::StringRef> nameSlices; - ParseTrieEntries (dyld_trie_data, - 0, - is_arm, - nameSlices, - resolver_addresses, - trie_entries); - - ConstString text_segment_name ("__TEXT"); - SectionSP text_segment_sp = GetSectionList()->FindSectionByName(text_segment_name); - if (text_segment_sp) - { - const lldb::addr_t text_segment_file_addr = text_segment_sp->GetFileAddress(); - if (text_segment_file_addr != LLDB_INVALID_ADDRESS) - { - for (auto &e : trie_entries) - e.entry.address += text_segment_file_addr; - } - } + const ConstString &g_segment_name_TEXT = GetSegmentNameTEXT(); + const ConstString &g_segment_name_DATA = GetSegmentNameDATA(); + const ConstString &g_segment_name_DATA_DIRTY = GetSegmentNameDATA_DIRTY(); + const ConstString &g_segment_name_DATA_CONST = GetSegmentNameDATA_CONST(); + const ConstString &g_segment_name_OBJC = GetSegmentNameOBJC(); + const ConstString &g_section_name_eh_frame = GetSectionNameEHFrame(); + SectionSP text_section_sp( + section_list->FindSectionByName(g_segment_name_TEXT)); + SectionSP data_section_sp( + section_list->FindSectionByName(g_segment_name_DATA)); + SectionSP data_dirty_section_sp( + section_list->FindSectionByName(g_segment_name_DATA_DIRTY)); + SectionSP data_const_section_sp( + section_list->FindSectionByName(g_segment_name_DATA_CONST)); + SectionSP objc_section_sp( + section_list->FindSectionByName(g_segment_name_OBJC)); + SectionSP eh_frame_section_sp; + if (text_section_sp.get()) + eh_frame_section_sp = text_section_sp->GetChildren().FindSectionByName( + g_section_name_eh_frame); + else + eh_frame_section_sp = + section_list->FindSectionByName(g_section_name_eh_frame); + + const bool is_arm = (m_header.cputype == llvm::MachO::CPU_TYPE_ARM); + + // lldb works best if it knows the start address of all functions in a + // module. + // Linker symbols or debug info are normally the best source of information + // for start addr / size but + // they may be stripped in a released binary. + // Two additional sources of information exist in Mach-O binaries: + // LC_FUNCTION_STARTS - a list of ULEB128 encoded offsets of each + // function's start address in the + // binary, relative to the text section. + // eh_frame - the eh_frame FDEs have the start addr & size of + // each function + // LC_FUNCTION_STARTS is the fastest source to read in, and is present on + // all modern binaries. + // Binaries built to run on older releases may need to use eh_frame + // information. + + if (text_section_sp && function_starts_data.GetByteSize()) { + FunctionStarts::Entry function_start_entry; + function_start_entry.data = false; + lldb::offset_t function_start_offset = 0; + function_start_entry.addr = text_section_sp->GetFileAddress(); + uint64_t delta; + while ((delta = function_starts_data.GetULEB128(&function_start_offset)) > + 0) { + // Now append the current entry + function_start_entry.addr += delta; + function_starts.Append(function_start_entry); + } + } else { + // If m_type is eTypeDebugInfo, then this is a dSYM - it will have the + // load command claiming an eh_frame + // but it doesn't actually have the eh_frame content. And if we have a + // dSYM, we don't need to do any + // of this fill-in-the-missing-symbols works anyway - the debug info + // should give us all the functions in + // the module. + if (text_section_sp.get() && eh_frame_section_sp.get() && + m_type != eTypeDebugInfo) { + DWARFCallFrameInfo eh_frame(*this, eh_frame_section_sp, + eRegisterKindEHFrame, true); + DWARFCallFrameInfo::FunctionAddressAndSizeVector functions; + eh_frame.GetFunctionAddressAndSizeVector(functions); + addr_t text_base_addr = text_section_sp->GetFileAddress(); + size_t count = functions.GetSize(); + for (size_t i = 0; i < count; ++i) { + const DWARFCallFrameInfo::FunctionAddressAndSizeVector::Entry *func = + functions.GetEntryAtIndex(i); + if (func) { + FunctionStarts::Entry function_start_entry; + function_start_entry.addr = func->base - text_base_addr; + function_starts.Append(function_start_entry); + } } + } + } - typedef std::set<ConstString> IndirectSymbols; - IndirectSymbols indirect_symbol_names; - -#if defined (__APPLE__) && (defined (__arm__) || defined (__arm64__) || defined (__aarch64__)) - - // Some recent builds of the dyld_shared_cache (hereafter: DSC) have been optimized by moving LOCAL - // symbols out of the memory mapped portion of the DSC. The symbol information has all been retained, - // but it isn't available in the normal nlist data. However, there *are* duplicate entries of *some* - // LOCAL symbols in the normal nlist data. To handle this situation correctly, we must first attempt - // to parse any DSC unmapped symbol information. If we find any, we set a flag that tells the normal - // nlist parser to ignore all LOCAL symbols. - - if (m_header.flags & 0x80000000u) - { - // Before we can start mapping the DSC, we need to make certain the target process is actually - // using the cache we can find. - - // Next we need to determine the correct path for the dyld shared cache. - - ArchSpec header_arch; - GetArchitecture(header_arch); - char dsc_path[PATH_MAX]; - char dsc_path_development[PATH_MAX]; - - snprintf(dsc_path, sizeof(dsc_path), "%s%s%s", - "/System/Library/Caches/com.apple.dyld/", /* IPHONE_DYLD_SHARED_CACHE_DIR */ - "dyld_shared_cache_", /* DYLD_SHARED_CACHE_BASE_NAME */ - header_arch.GetArchitectureName()); - - snprintf(dsc_path_development, sizeof(dsc_path), "%s%s%s%s", - "/System/Library/Caches/com.apple.dyld/", /* IPHONE_DYLD_SHARED_CACHE_DIR */ - "dyld_shared_cache_", /* DYLD_SHARED_CACHE_BASE_NAME */ - header_arch.GetArchitectureName(), - ".development"); - - FileSpec dsc_nondevelopment_filespec(dsc_path, false); - FileSpec dsc_development_filespec(dsc_path_development, false); - FileSpec dsc_filespec; - - UUID dsc_uuid; - UUID process_shared_cache_uuid; - - if (process) - { - process_shared_cache_uuid = GetProcessSharedCacheUUID(process); - } - - // First see if we can find an exact match for the inferior process shared cache UUID in - // the development or non-development shared caches on disk. - if (process_shared_cache_uuid.IsValid()) - { - if (dsc_development_filespec.Exists()) - { - UUID dsc_development_uuid = GetSharedCacheUUID (dsc_development_filespec, byte_order, addr_byte_size); - if (dsc_development_uuid.IsValid() && dsc_development_uuid == process_shared_cache_uuid) - { - dsc_filespec = dsc_development_filespec; - dsc_uuid = dsc_development_uuid; - } - } - if (!dsc_uuid.IsValid() && dsc_nondevelopment_filespec.Exists()) - { - UUID dsc_nondevelopment_uuid = GetSharedCacheUUID (dsc_nondevelopment_filespec, byte_order, addr_byte_size); - if (dsc_nondevelopment_uuid.IsValid() && dsc_nondevelopment_uuid == process_shared_cache_uuid) - { - dsc_filespec = dsc_nondevelopment_filespec; - dsc_uuid = dsc_nondevelopment_uuid; - } - } - } - - // Failing a UUID match, prefer the development dyld_shared cache if both are present. - if (!dsc_filespec.Exists()) - { - if (dsc_development_filespec.Exists()) - { - dsc_filespec = dsc_development_filespec; - } - else - { - dsc_filespec = dsc_nondevelopment_filespec; - } - } - - /* The dyld_cache_header has a pointer to the dyld_cache_local_symbols_info structure (localSymbolsOffset). - The dyld_cache_local_symbols_info structure gives us three things: - 1. The start and count of the nlist records in the dyld_shared_cache file - 2. The start and size of the strings for these nlist records - 3. The start and count of dyld_cache_local_symbols_entry entries - - There is one dyld_cache_local_symbols_entry per dylib/framework in the dyld shared cache. - The "dylibOffset" field is the Mach-O header of this dylib/framework in the dyld shared cache. - The dyld_cache_local_symbols_entry also lists the start of this dylib/framework's nlist records - and the count of how many nlist records there are for this dylib/framework. - */ - - // Process the dyld shared cache header to find the unmapped symbols - - DataBufferSP dsc_data_sp = dsc_filespec.MemoryMapFileContentsIfLocal(0, sizeof(struct lldb_copy_dyld_cache_header_v1)); - if (!dsc_uuid.IsValid()) - { - dsc_uuid = GetSharedCacheUUID (dsc_filespec, byte_order, addr_byte_size); - } - if (dsc_data_sp) - { - DataExtractor dsc_header_data (dsc_data_sp, byte_order, addr_byte_size); - - bool uuid_match = true; - if (dsc_uuid.IsValid() && process) - { - if (process_shared_cache_uuid.IsValid() && dsc_uuid != process_shared_cache_uuid) - { - // The on-disk dyld_shared_cache file is not the same as the one in this - // process' memory, don't use it. - uuid_match = false; - ModuleSP module_sp (GetModule()); - if (module_sp) - module_sp->ReportWarning ("process shared cache does not match on-disk dyld_shared_cache file, some symbol names will be missing."); - } - } - - offset = offsetof (struct lldb_copy_dyld_cache_header_v1, mappingOffset); - - uint32_t mappingOffset = dsc_header_data.GetU32(&offset); - - // If the mappingOffset points to a location inside the header, we've - // opened an old dyld shared cache, and should not proceed further. - if (uuid_match && mappingOffset >= sizeof(struct lldb_copy_dyld_cache_header_v1)) - { - - DataBufferSP dsc_mapping_info_data_sp = dsc_filespec.MemoryMapFileContentsIfLocal(mappingOffset, sizeof (struct lldb_copy_dyld_cache_mapping_info)); - DataExtractor dsc_mapping_info_data(dsc_mapping_info_data_sp, byte_order, addr_byte_size); - offset = 0; - - // The File addresses (from the in-memory Mach-O load commands) for the shared libraries - // in the shared library cache need to be adjusted by an offset to match up with the - // dylibOffset identifying field in the dyld_cache_local_symbol_entry's. This offset is - // recorded in mapping_offset_value. - const uint64_t mapping_offset_value = dsc_mapping_info_data.GetU64(&offset); - - offset = offsetof (struct lldb_copy_dyld_cache_header_v1, localSymbolsOffset); - uint64_t localSymbolsOffset = dsc_header_data.GetU64(&offset); - uint64_t localSymbolsSize = dsc_header_data.GetU64(&offset); + const size_t function_starts_count = function_starts.GetSize(); - if (localSymbolsOffset && localSymbolsSize) - { - // Map the local symbols - if (DataBufferSP dsc_local_symbols_data_sp = dsc_filespec.MemoryMapFileContentsIfLocal(localSymbolsOffset, localSymbolsSize)) - { - DataExtractor dsc_local_symbols_data(dsc_local_symbols_data_sp, byte_order, addr_byte_size); - - offset = 0; - - typedef std::map<ConstString, uint16_t> UndefinedNameToDescMap; - typedef std::map<uint32_t, ConstString> SymbolIndexToName; - UndefinedNameToDescMap undefined_name_to_desc; - SymbolIndexToName reexport_shlib_needs_fixup; - - - // Read the local_symbols_infos struct in one shot - struct lldb_copy_dyld_cache_local_symbols_info local_symbols_info; - dsc_local_symbols_data.GetU32(&offset, &local_symbols_info.nlistOffset, 6); - - SectionSP text_section_sp(section_list->FindSectionByName(GetSegmentNameTEXT())); - - uint32_t header_file_offset = (text_section_sp->GetFileAddress() - mapping_offset_value); - - offset = local_symbols_info.entriesOffset; - for (uint32_t entry_index = 0; entry_index < local_symbols_info.entriesCount; entry_index++) - { - struct lldb_copy_dyld_cache_local_symbols_entry local_symbols_entry; - local_symbols_entry.dylibOffset = dsc_local_symbols_data.GetU32(&offset); - local_symbols_entry.nlistStartIndex = dsc_local_symbols_data.GetU32(&offset); - local_symbols_entry.nlistCount = dsc_local_symbols_data.GetU32(&offset); - - if (header_file_offset == local_symbols_entry.dylibOffset) - { - unmapped_local_symbols_found = local_symbols_entry.nlistCount; - - // The normal nlist code cannot correctly size the Symbols array, we need to allocate it here. - sym = symtab->Resize (symtab_load_command.nsyms + m_dysymtab.nindirectsyms + unmapped_local_symbols_found - m_dysymtab.nlocalsym); - num_syms = symtab->GetNumSymbols(); - - nlist_data_offset = local_symbols_info.nlistOffset + (nlist_byte_size * local_symbols_entry.nlistStartIndex); - uint32_t string_table_offset = local_symbols_info.stringsOffset; - - for (uint32_t nlist_index = 0; nlist_index < local_symbols_entry.nlistCount; nlist_index++) - { - ///////////////////////////// - { - struct nlist_64 nlist; - if (!dsc_local_symbols_data.ValidOffsetForDataOfSize(nlist_data_offset, nlist_byte_size)) - break; - - nlist.n_strx = dsc_local_symbols_data.GetU32_unchecked(&nlist_data_offset); - nlist.n_type = dsc_local_symbols_data.GetU8_unchecked (&nlist_data_offset); - nlist.n_sect = dsc_local_symbols_data.GetU8_unchecked (&nlist_data_offset); - nlist.n_desc = dsc_local_symbols_data.GetU16_unchecked (&nlist_data_offset); - nlist.n_value = dsc_local_symbols_data.GetAddress_unchecked (&nlist_data_offset); - - SymbolType type = eSymbolTypeInvalid; - const char *symbol_name = dsc_local_symbols_data.PeekCStr(string_table_offset + nlist.n_strx); - - if (symbol_name == NULL) - { - // No symbol should be NULL, even the symbols with no - // string values should have an offset zero which points - // to an empty C-string - Host::SystemLog (Host::eSystemLogError, - "error: DSC unmapped local symbol[%u] has invalid string table offset 0x%x in %s, ignoring symbol\n", - entry_index, - nlist.n_strx, - module_sp->GetFileSpec().GetPath().c_str()); - continue; - } - if (symbol_name[0] == '\0') - symbol_name = NULL; - - const char *symbol_name_non_abi_mangled = NULL; - - SectionSP symbol_section; - uint32_t symbol_byte_size = 0; - bool add_nlist = true; - bool is_debug = ((nlist.n_type & N_STAB) != 0); - bool demangled_is_synthesized = false; - bool is_gsym = false; - bool set_value = true; - - assert (sym_idx < num_syms); - - sym[sym_idx].SetDebug (is_debug); - - if (is_debug) - { - switch (nlist.n_type) - { - case N_GSYM: - // global symbol: name,,NO_SECT,type,0 - // Sometimes the N_GSYM value contains the address. - - // FIXME: In the .o files, we have a GSYM and a debug symbol for all the ObjC data. They - // have the same address, but we want to ensure that we always find only the real symbol, - // 'cause we don't currently correctly attribute the GSYM one to the ObjCClass/Ivar/MetaClass - // symbol type. This is a temporary hack to make sure the ObjectiveC symbols get treated - // correctly. To do this right, we should coalesce all the GSYM & global symbols that have the - // same address. - - is_gsym = true; - sym[sym_idx].SetExternal(true); - - if (symbol_name && symbol_name[0] == '_' && symbol_name[1] == 'O') - { - llvm::StringRef symbol_name_ref(symbol_name); - if (symbol_name_ref.startswith(g_objc_v2_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_metaclass)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_metaclass.size(); - type = eSymbolTypeObjCMetaClass; - demangled_is_synthesized = true; - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_ivar)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_ivar.size(); - type = eSymbolTypeObjCIVar; - demangled_is_synthesized = true; - } - } - else - { - if (nlist.n_value != 0) - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeData; - } - break; - - case N_FNAME: - // procedure name (f77 kludge): name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_FUN: - // procedure: name,,n_sect,linenumber,address - if (symbol_name) - { - type = eSymbolTypeCode; - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - - N_FUN_addr_to_sym_idx.insert(std::make_pair(nlist.n_value, sym_idx)); - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - N_FUN_indexes.push_back(sym_idx); - } - else - { - type = eSymbolTypeCompiler; - - if ( !N_FUN_indexes.empty() ) - { - // Copy the size of the function into the original STAB entry so we don't have - // to hunt for it later - symtab->SymbolAtIndex(N_FUN_indexes.back())->SetByteSize(nlist.n_value); - N_FUN_indexes.pop_back(); - // We don't really need the end function STAB as it contains the size which - // we already placed with the original symbol, so don't add it if we want a - // minimal symbol table - add_nlist = false; - } - } - break; - - case N_STSYM: - // static symbol: name,,n_sect,type,address - N_STSYM_addr_to_sym_idx.insert(std::make_pair(nlist.n_value, sym_idx)); - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - if (symbol_name && symbol_name[0]) - { - type = ObjectFile::GetSymbolTypeFromName(symbol_name+1, eSymbolTypeData); - } - break; - - case N_LCSYM: - // .lcomm symbol: name,,n_sect,type,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeCommonBlock; - break; - - case N_BNSYM: - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - // Skip these if we want minimal symbol tables - add_nlist = false; - break; - - case N_ENSYM: - // Set the size of the N_BNSYM to the terminating index of this N_ENSYM - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - // Skip these if we want minimal symbol tables - add_nlist = false; - break; - - case N_OPT: - // emitted with gcc2_compiled and in gcc source - type = eSymbolTypeCompiler; - break; - - case N_RSYM: - // register sym: name,,NO_SECT,type,register - type = eSymbolTypeVariable; - break; - - case N_SLINE: - // src line: 0,,n_sect,linenumber,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeLineEntry; - break; - - case N_SSYM: - // structure elt: name,,NO_SECT,type,struct_offset - type = eSymbolTypeVariableType; - break; - - case N_SO: - // source file name - type = eSymbolTypeSourceFile; - if (symbol_name == NULL) - { - add_nlist = false; - if (N_SO_index != UINT32_MAX) - { - // Set the size of the N_SO to the terminating index of this N_SO - // so that we can always skip the entire N_SO if we need to navigate - // more quickly at the source level when parsing STABS - symbol_ptr = symtab->SymbolAtIndex(N_SO_index); - symbol_ptr->SetByteSize(sym_idx); - symbol_ptr->SetSizeIsSibling(true); - } - N_NSYM_indexes.clear(); - N_INCL_indexes.clear(); - N_BRAC_indexes.clear(); - N_COMM_indexes.clear(); - N_FUN_indexes.clear(); - N_SO_index = UINT32_MAX; - } - else - { - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - const bool N_SO_has_full_path = symbol_name[0] == '/'; - if (N_SO_has_full_path) - { - if ((N_SO_index == sym_idx - 1) && ((sym_idx - 1) < num_syms)) - { - // We have two consecutive N_SO entries where the first contains a directory - // and the second contains a full path. - sym[sym_idx - 1].GetMangled().SetValue(ConstString(symbol_name), false); - m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; - add_nlist = false; - } - else - { - // This is the first entry in a N_SO that contains a directory or - // a full path to the source file - N_SO_index = sym_idx; - } - } - else if ((N_SO_index == sym_idx - 1) && ((sym_idx - 1) < num_syms)) - { - // This is usually the second N_SO entry that contains just the filename, - // so here we combine it with the first one if we are minimizing the symbol table - const char *so_path = sym[sym_idx - 1].GetMangled().GetDemangledName(lldb::eLanguageTypeUnknown).AsCString(); - if (so_path && so_path[0]) - { - std::string full_so_path (so_path); - const size_t double_slash_pos = full_so_path.find("//"); - if (double_slash_pos != std::string::npos) - { - // The linker has been generating bad N_SO entries with doubled up paths - // in the format "%s%s" where the first string in the DW_AT_comp_dir, - // and the second is the directory for the source file so you end up with - // a path that looks like "/tmp/src//tmp/src/" - FileSpec so_dir(so_path, false); - if (!so_dir.Exists()) - { - so_dir.SetFile(&full_so_path[double_slash_pos + 1], false); - if (so_dir.Exists()) - { - // Trim off the incorrect path - full_so_path.erase(0, double_slash_pos + 1); - } - } - } - if (*full_so_path.rbegin() != '/') - full_so_path += '/'; - full_so_path += symbol_name; - sym[sym_idx - 1].GetMangled().SetValue(ConstString(full_so_path.c_str()), false); - add_nlist = false; - m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; - } - } - else - { - // This could be a relative path to a N_SO - N_SO_index = sym_idx; - } - } - break; - - case N_OSO: - // object file name: name,,0,0,st_mtime - type = eSymbolTypeObjectFile; - break; - - case N_LSYM: - // local sym: name,,NO_SECT,type,offset - type = eSymbolTypeLocal; - break; - - //---------------------------------------------------------------------- - // INCL scopes - //---------------------------------------------------------------------- - case N_BINCL: - // include file beginning: name,,NO_SECT,0,sum - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - N_INCL_indexes.push_back(sym_idx); - type = eSymbolTypeScopeBegin; - break; - - case N_EINCL: - // include file end: name,,NO_SECT,0,0 - // Set the size of the N_BINCL to the terminating index of this N_EINCL - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - if ( !N_INCL_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_INCL_indexes.back()); - symbol_ptr->SetByteSize(sym_idx + 1); - symbol_ptr->SetSizeIsSibling(true); - N_INCL_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_SOL: - // #included file name: name,,n_sect,0,address - type = eSymbolTypeHeaderFile; - - // We currently don't use the header files on darwin - add_nlist = false; - break; - - case N_PARAMS: - // compiler parameters: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_VERSION: - // compiler version: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_OLEVEL: - // compiler -O level: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_PSYM: - // parameter: name,,NO_SECT,type,offset - type = eSymbolTypeVariable; - break; - - case N_ENTRY: - // alternate entry: name,,n_sect,linenumber,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeLineEntry; - break; - - //---------------------------------------------------------------------- - // Left and Right Braces - //---------------------------------------------------------------------- - case N_LBRAC: - // left bracket: 0,,NO_SECT,nesting level,address - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - N_BRAC_indexes.push_back(sym_idx); - type = eSymbolTypeScopeBegin; - break; - - case N_RBRAC: - // right bracket: 0,,NO_SECT,nesting level,address - // Set the size of the N_LBRAC to the terminating index of this N_RBRAC - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - if ( !N_BRAC_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_BRAC_indexes.back()); - symbol_ptr->SetByteSize(sym_idx + 1); - symbol_ptr->SetSizeIsSibling(true); - N_BRAC_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_EXCL: - // deleted include file: name,,NO_SECT,0,sum - type = eSymbolTypeHeaderFile; - break; - - //---------------------------------------------------------------------- - // COMM scopes - //---------------------------------------------------------------------- - case N_BCOMM: - // begin common: name,,NO_SECT,0,0 - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - type = eSymbolTypeScopeBegin; - N_COMM_indexes.push_back(sym_idx); - break; - - case N_ECOML: - // end common (local name): 0,,n_sect,0,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - // Fall through - - case N_ECOMM: - // end common: name,,n_sect,0,0 - // Set the size of the N_BCOMM to the terminating index of this N_ECOMM/N_ECOML - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - if ( !N_COMM_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_COMM_indexes.back()); - symbol_ptr->SetByteSize(sym_idx + 1); - symbol_ptr->SetSizeIsSibling(true); - N_COMM_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_LENG: - // second stab entry with length information - type = eSymbolTypeAdditional; - break; - - default: break; - } - } - else - { - //uint8_t n_pext = N_PEXT & nlist.n_type; - uint8_t n_type = N_TYPE & nlist.n_type; - sym[sym_idx].SetExternal((N_EXT & nlist.n_type) != 0); - - switch (n_type) - { - case N_INDR: - { - const char *reexport_name_cstr = strtab_data.PeekCStr(nlist.n_value); - if (reexport_name_cstr && reexport_name_cstr[0]) - { - type = eSymbolTypeReExported; - ConstString reexport_name(reexport_name_cstr + ((reexport_name_cstr[0] == '_') ? 1 : 0)); - sym[sym_idx].SetReExportedSymbolName(reexport_name); - set_value = false; - reexport_shlib_needs_fixup[sym_idx] = reexport_name; - indirect_symbol_names.insert(ConstString(symbol_name + ((symbol_name[0] == '_') ? 1 : 0))); - } - else - type = eSymbolTypeUndefined; - } - break; - - case N_UNDF: - if (symbol_name && symbol_name[0]) - { - ConstString undefined_name(symbol_name + ((symbol_name[0] == '_') ? 1 : 0)); - undefined_name_to_desc[undefined_name] = nlist.n_desc; - } - // Fall through - case N_PBUD: - type = eSymbolTypeUndefined; - break; - - case N_ABS: - type = eSymbolTypeAbsolute; - break; - - case N_SECT: - { - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - - if (symbol_section == NULL) - { - // TODO: warn about this? - add_nlist = false; - break; - } - - if (TEXT_eh_frame_sectID == nlist.n_sect) - { - type = eSymbolTypeException; - } - else - { - uint32_t section_type = symbol_section->Get() & SECTION_TYPE; - - switch (section_type) - { - case S_CSTRING_LITERALS: type = eSymbolTypeData; break; // section with only literal C strings - case S_4BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 4 byte literals - case S_8BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 8 byte literals - case S_LITERAL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only pointers to literals - case S_NON_LAZY_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only non-lazy symbol pointers - case S_LAZY_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only lazy symbol pointers - case S_SYMBOL_STUBS: type = eSymbolTypeTrampoline; break; // section with only symbol stubs, byte size of stub in the reserved2 field - case S_MOD_INIT_FUNC_POINTERS: type = eSymbolTypeCode; break; // section with only function pointers for initialization - case S_MOD_TERM_FUNC_POINTERS: type = eSymbolTypeCode; break; // section with only function pointers for termination - case S_INTERPOSING: type = eSymbolTypeTrampoline; break; // section with only pairs of function pointers for interposing - case S_16BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 16 byte literals - case S_DTRACE_DOF: type = eSymbolTypeInstrumentation; break; - case S_LAZY_DYLIB_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; - default: - switch (symbol_section->GetType()) - { - case lldb::eSectionTypeCode: - type = eSymbolTypeCode; - break; - case eSectionTypeData: - case eSectionTypeDataCString: // Inlined C string data - case eSectionTypeDataCStringPointers: // Pointers to C string data - case eSectionTypeDataSymbolAddress: // Address of a symbol in the symbol table - case eSectionTypeData4: - case eSectionTypeData8: - case eSectionTypeData16: - type = eSymbolTypeData; - break; - default: - break; - } - break; - } - - if (type == eSymbolTypeInvalid) - { - const char *symbol_sect_name = symbol_section->GetName().AsCString(); - if (symbol_section->IsDescendant (text_section_sp.get())) - { - if (symbol_section->IsClear(S_ATTR_PURE_INSTRUCTIONS | - S_ATTR_SELF_MODIFYING_CODE | - S_ATTR_SOME_INSTRUCTIONS)) - type = eSymbolTypeData; - else - type = eSymbolTypeCode; - } - else if (symbol_section->IsDescendant(data_section_sp.get()) || - symbol_section->IsDescendant(data_dirty_section_sp.get()) || - symbol_section->IsDescendant(data_const_section_sp.get())) - { - if (symbol_sect_name && ::strstr (symbol_sect_name, "__objc") == symbol_sect_name) - { - type = eSymbolTypeRuntime; - - if (symbol_name) - { - llvm::StringRef symbol_name_ref(symbol_name); - if (symbol_name_ref.startswith("_OBJC_")) - { - static const llvm::StringRef g_objc_v2_prefix_class ("_OBJC_CLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_metaclass ("_OBJC_METACLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_ivar ("_OBJC_IVAR_$_"); - if (symbol_name_ref.startswith(g_objc_v2_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_metaclass)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_metaclass.size(); - type = eSymbolTypeObjCMetaClass; - demangled_is_synthesized = true; - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_ivar)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_ivar.size(); - type = eSymbolTypeObjCIVar; - demangled_is_synthesized = true; - } - } - } - } - else if (symbol_sect_name && ::strstr (symbol_sect_name, "__gcc_except_tab") == symbol_sect_name) - { - type = eSymbolTypeException; - } - else - { - type = eSymbolTypeData; - } - } - else if (symbol_sect_name && ::strstr (symbol_sect_name, "__IMPORT") == symbol_sect_name) - { - type = eSymbolTypeTrampoline; - } - else if (symbol_section->IsDescendant(objc_section_sp.get())) - { - type = eSymbolTypeRuntime; - if (symbol_name && symbol_name[0] == '.') - { - llvm::StringRef symbol_name_ref(symbol_name); - static const llvm::StringRef g_objc_v1_prefix_class (".objc_class_name_"); - if (symbol_name_ref.startswith(g_objc_v1_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name; - symbol_name = symbol_name + g_objc_v1_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - } - } - } - } - } - } - break; - } - } - - if (add_nlist) - { - uint64_t symbol_value = nlist.n_value; - if (symbol_name_non_abi_mangled) - { - sym[sym_idx].GetMangled().SetMangledName (ConstString(symbol_name_non_abi_mangled)); - sym[sym_idx].GetMangled().SetDemangledName (ConstString(symbol_name)); - } - else - { - bool symbol_name_is_mangled = false; - - if (symbol_name && symbol_name[0] == '_') - { - symbol_name_is_mangled = symbol_name[1] == '_'; - symbol_name++; // Skip the leading underscore - } - - if (symbol_name) - { - ConstString const_symbol_name(symbol_name); - sym[sym_idx].GetMangled().SetValue(const_symbol_name, symbol_name_is_mangled); - if (is_gsym && is_debug) - { - const char *gsym_name = sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled).GetCString(); - if (gsym_name) - N_GSYM_name_to_sym_idx[gsym_name] = sym_idx; - } - } - } - if (symbol_section) - { - const addr_t section_file_addr = symbol_section->GetFileAddress(); - if (symbol_byte_size == 0 && function_starts_count > 0) - { - addr_t symbol_lookup_file_addr = nlist.n_value; - // Do an exact address match for non-ARM addresses, else get the closest since - // the symbol might be a thumb symbol which has an address with bit zero set - FunctionStarts::Entry *func_start_entry = function_starts.FindEntry (symbol_lookup_file_addr, !is_arm); - if (is_arm && func_start_entry) - { - // Verify that the function start address is the symbol address (ARM) - // or the symbol address + 1 (thumb) - if (func_start_entry->addr != symbol_lookup_file_addr && - func_start_entry->addr != (symbol_lookup_file_addr + 1)) - { - // Not the right entry, NULL it out... - func_start_entry = NULL; - } - } - if (func_start_entry) - { - func_start_entry->data = true; - - addr_t symbol_file_addr = func_start_entry->addr; - uint32_t symbol_flags = 0; - if (is_arm) - { - if (symbol_file_addr & 1) - symbol_flags = MACHO_NLIST_ARM_SYMBOL_IS_THUMB; - symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - } - - const FunctionStarts::Entry *next_func_start_entry = function_starts.FindNextEntry (func_start_entry); - const addr_t section_end_file_addr = section_file_addr + symbol_section->GetByteSize(); - if (next_func_start_entry) - { - addr_t next_symbol_file_addr = next_func_start_entry->addr; - // Be sure the clear the Thumb address bit when we calculate the size - // from the current and next address - if (is_arm) - next_symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - symbol_byte_size = std::min<lldb::addr_t>(next_symbol_file_addr - symbol_file_addr, section_end_file_addr - symbol_file_addr); - } - else - { - symbol_byte_size = section_end_file_addr - symbol_file_addr; - } - } - } - symbol_value -= section_file_addr; - } - - if (is_debug == false) - { - if (type == eSymbolTypeCode) - { - // See if we can find a N_FUN entry for any code symbols. - // If we do find a match, and the name matches, then we - // can merge the two into just the function symbol to avoid - // duplicate entries in the symbol table - std::pair<ValueToSymbolIndexMap::const_iterator, ValueToSymbolIndexMap::const_iterator> range; - range = N_FUN_addr_to_sym_idx.equal_range(nlist.n_value); - if (range.first != range.second) - { - bool found_it = false; - for (ValueToSymbolIndexMap::const_iterator pos = range.first; pos != range.second; ++pos) - { - if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled) == sym[pos->second].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) - { - m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; - // We just need the flags from the linker symbol, so put these flags - // into the N_FUN flags to avoid duplicate symbols in the symbol table - sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); - sym[pos->second].SetFlags (nlist.n_type << 16 | nlist.n_desc); - if (resolver_addresses.find(nlist.n_value) != resolver_addresses.end()) - sym[pos->second].SetType (eSymbolTypeResolver); - sym[sym_idx].Clear(); - found_it = true; - break; - } - } - if (found_it) - continue; - } - else - { - if (resolver_addresses.find(nlist.n_value) != resolver_addresses.end()) - type = eSymbolTypeResolver; - } - } - else if (type == eSymbolTypeData || - type == eSymbolTypeObjCClass || - type == eSymbolTypeObjCMetaClass || - type == eSymbolTypeObjCIVar ) - { - // See if we can find a N_STSYM entry for any data symbols. - // If we do find a match, and the name matches, then we - // can merge the two into just the Static symbol to avoid - // duplicate entries in the symbol table - std::pair<ValueToSymbolIndexMap::const_iterator, ValueToSymbolIndexMap::const_iterator> range; - range = N_STSYM_addr_to_sym_idx.equal_range(nlist.n_value); - if (range.first != range.second) - { - bool found_it = false; - for (ValueToSymbolIndexMap::const_iterator pos = range.first; pos != range.second; ++pos) - { - if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled) == sym[pos->second].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) - { - m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; - // We just need the flags from the linker symbol, so put these flags - // into the N_STSYM flags to avoid duplicate symbols in the symbol table - sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); - sym[pos->second].SetFlags (nlist.n_type << 16 | nlist.n_desc); - sym[sym_idx].Clear(); - found_it = true; - break; - } - } - if (found_it) - continue; - } - else - { - const char *gsym_name = sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled).GetCString(); - if (gsym_name) - { - // Combine N_GSYM stab entries with the non stab symbol - ConstNameToSymbolIndexMap::const_iterator pos = N_GSYM_name_to_sym_idx.find(gsym_name); - if (pos != N_GSYM_name_to_sym_idx.end()) - { - const uint32_t GSYM_sym_idx = pos->second; - m_nlist_idx_to_sym_idx[nlist_idx] = GSYM_sym_idx; - // Copy the address, because often the N_GSYM address has an invalid address of zero - // when the global is a common symbol - sym[GSYM_sym_idx].GetAddressRef().SetSection (symbol_section); - sym[GSYM_sym_idx].GetAddressRef().SetOffset (symbol_value); - // We just need the flags from the linker symbol, so put these flags - // into the N_GSYM flags to avoid duplicate symbols in the symbol table - sym[GSYM_sym_idx].SetFlags (nlist.n_type << 16 | nlist.n_desc); - sym[sym_idx].Clear(); - continue; - } - } - } - } - } - - sym[sym_idx].SetID (nlist_idx); - sym[sym_idx].SetType (type); - if (set_value) - { - sym[sym_idx].GetAddressRef().SetSection (symbol_section); - sym[sym_idx].GetAddressRef().SetOffset (symbol_value); - } - sym[sym_idx].SetFlags (nlist.n_type << 16 | nlist.n_desc); - - if (symbol_byte_size > 0) - sym[sym_idx].SetByteSize(symbol_byte_size); - - if (demangled_is_synthesized) - sym[sym_idx].SetDemangledNameIsSynthesized(true); - ++sym_idx; - } - else - { - sym[sym_idx].Clear(); - } - - } - ///////////////////////////// - } - break; // No more entries to consider - } - } + // For user process binaries (executables, dylibs, frameworks, bundles), if + // we don't have + // LC_FUNCTION_STARTS/eh_frame section in this binary, we're going to assume + // the binary + // has been stripped. Don't allow assembly language instruction emulation + // because we don't + // know proper function start boundaries. + // + // For all other types of binaries (kernels, stand-alone bare board + // binaries, kexts), they + // may not have LC_FUNCTION_STARTS / eh_frame sections - we should not make + // any assumptions + // about them based on that. + if (function_starts_count == 0 && CalculateStrata() == eStrataUser) { + m_allow_assembly_emulation_unwind_plans = false; + Log *unwind_or_symbol_log(lldb_private::GetLogIfAnyCategoriesSet( + LIBLLDB_LOG_SYMBOLS | LIBLLDB_LOG_UNWIND)); + + if (unwind_or_symbol_log) + module_sp->LogMessage( + unwind_or_symbol_log, + "no LC_FUNCTION_STARTS, will not allow assembly profiled unwinds"); + } - for (const auto &pos :reexport_shlib_needs_fixup) - { - const auto undef_pos = undefined_name_to_desc.find(pos.second); - if (undef_pos != undefined_name_to_desc.end()) - { - const uint8_t dylib_ordinal = llvm::MachO::GET_LIBRARY_ORDINAL(undef_pos->second); - if (dylib_ordinal > 0 && dylib_ordinal < dylib_files.GetSize()) - sym[pos.first].SetReExportedSymbolSharedLibrary(dylib_files.GetFileSpecAtIndex(dylib_ordinal-1)); - } - } - } - } - } - } + const user_id_t TEXT_eh_frame_sectID = + eh_frame_section_sp.get() ? eh_frame_section_sp->GetID() + : static_cast<user_id_t>(NO_SECT); + + lldb::offset_t nlist_data_offset = 0; + + uint32_t N_SO_index = UINT32_MAX; + + MachSymtabSectionInfo section_info(section_list); + std::vector<uint32_t> N_FUN_indexes; + std::vector<uint32_t> N_NSYM_indexes; + std::vector<uint32_t> N_INCL_indexes; + std::vector<uint32_t> N_BRAC_indexes; + std::vector<uint32_t> N_COMM_indexes; + typedef std::multimap<uint64_t, uint32_t> ValueToSymbolIndexMap; + typedef std::map<uint32_t, uint32_t> NListIndexToSymbolIndexMap; + typedef std::map<const char *, uint32_t> ConstNameToSymbolIndexMap; + ValueToSymbolIndexMap N_FUN_addr_to_sym_idx; + ValueToSymbolIndexMap N_STSYM_addr_to_sym_idx; + ConstNameToSymbolIndexMap N_GSYM_name_to_sym_idx; + // Any symbols that get merged into another will get an entry + // in this map so we know + NListIndexToSymbolIndexMap m_nlist_idx_to_sym_idx; + uint32_t nlist_idx = 0; + Symbol *symbol_ptr = NULL; + + uint32_t sym_idx = 0; + Symbol *sym = NULL; + size_t num_syms = 0; + std::string memory_symbol_name; + uint32_t unmapped_local_symbols_found = 0; + + std::vector<TrieEntryWithOffset> trie_entries; + std::set<lldb::addr_t> resolver_addresses; + + if (dyld_trie_data.GetByteSize() > 0) { + std::vector<llvm::StringRef> nameSlices; + ParseTrieEntries(dyld_trie_data, 0, is_arm, nameSlices, + resolver_addresses, trie_entries); + + ConstString text_segment_name("__TEXT"); + SectionSP text_segment_sp = + GetSectionList()->FindSectionByName(text_segment_name); + if (text_segment_sp) { + const lldb::addr_t text_segment_file_addr = + text_segment_sp->GetFileAddress(); + if (text_segment_file_addr != LLDB_INVALID_ADDRESS) { + for (auto &e : trie_entries) + e.entry.address += text_segment_file_addr; } + } + } - // Must reset this in case it was mutated above! - nlist_data_offset = 0; -#endif - - if (nlist_data.GetByteSize() > 0) - { - - // If the sym array was not created while parsing the DSC unmapped - // symbols, create it now. - if (sym == NULL) - { - sym = symtab->Resize (symtab_load_command.nsyms + m_dysymtab.nindirectsyms); - num_syms = symtab->GetNumSymbols(); - } - - if (unmapped_local_symbols_found) - { - assert(m_dysymtab.ilocalsym == 0); - nlist_data_offset += (m_dysymtab.nlocalsym * nlist_byte_size); - nlist_idx = m_dysymtab.nlocalsym; - } - else - { - nlist_idx = 0; - } - - typedef std::map<ConstString, uint16_t> UndefinedNameToDescMap; - typedef std::map<uint32_t, ConstString> SymbolIndexToName; - UndefinedNameToDescMap undefined_name_to_desc; - SymbolIndexToName reexport_shlib_needs_fixup; - for (; nlist_idx < symtab_load_command.nsyms; ++nlist_idx) - { - struct nlist_64 nlist; - if (!nlist_data.ValidOffsetForDataOfSize(nlist_data_offset, nlist_byte_size)) - break; - - nlist.n_strx = nlist_data.GetU32_unchecked(&nlist_data_offset); - nlist.n_type = nlist_data.GetU8_unchecked (&nlist_data_offset); - nlist.n_sect = nlist_data.GetU8_unchecked (&nlist_data_offset); - nlist.n_desc = nlist_data.GetU16_unchecked (&nlist_data_offset); - nlist.n_value = nlist_data.GetAddress_unchecked (&nlist_data_offset); - - SymbolType type = eSymbolTypeInvalid; - const char *symbol_name = NULL; - - if (have_strtab_data) - { - symbol_name = strtab_data.PeekCStr(nlist.n_strx); + typedef std::set<ConstString> IndirectSymbols; + IndirectSymbols indirect_symbol_names; + +#if defined(__APPLE__) && \ + (defined(__arm__) || defined(__arm64__) || defined(__aarch64__)) + + // Some recent builds of the dyld_shared_cache (hereafter: DSC) have been + // optimized by moving LOCAL + // symbols out of the memory mapped portion of the DSC. The symbol + // information has all been retained, + // but it isn't available in the normal nlist data. However, there *are* + // duplicate entries of *some* + // LOCAL symbols in the normal nlist data. To handle this situation + // correctly, we must first attempt + // to parse any DSC unmapped symbol information. If we find any, we set a + // flag that tells the normal + // nlist parser to ignore all LOCAL symbols. + + if (m_header.flags & 0x80000000u) { + // Before we can start mapping the DSC, we need to make certain the target + // process is actually + // using the cache we can find. + + // Next we need to determine the correct path for the dyld shared cache. + + ArchSpec header_arch; + GetArchitecture(header_arch); + char dsc_path[PATH_MAX]; + char dsc_path_development[PATH_MAX]; + + snprintf( + dsc_path, sizeof(dsc_path), "%s%s%s", + "/System/Library/Caches/com.apple.dyld/", /* IPHONE_DYLD_SHARED_CACHE_DIR + */ + "dyld_shared_cache_", /* DYLD_SHARED_CACHE_BASE_NAME */ + header_arch.GetArchitectureName()); + + snprintf( + dsc_path_development, sizeof(dsc_path), "%s%s%s%s", + "/System/Library/Caches/com.apple.dyld/", /* IPHONE_DYLD_SHARED_CACHE_DIR + */ + "dyld_shared_cache_", /* DYLD_SHARED_CACHE_BASE_NAME */ + header_arch.GetArchitectureName(), ".development"); + + FileSpec dsc_nondevelopment_filespec(dsc_path, false); + FileSpec dsc_development_filespec(dsc_path_development, false); + FileSpec dsc_filespec; + + UUID dsc_uuid; + UUID process_shared_cache_uuid; + + if (process) { + process_shared_cache_uuid = GetProcessSharedCacheUUID(process); + } + + // First see if we can find an exact match for the inferior process shared + // cache UUID in + // the development or non-development shared caches on disk. + if (process_shared_cache_uuid.IsValid()) { + if (dsc_development_filespec.Exists()) { + UUID dsc_development_uuid = GetSharedCacheUUID( + dsc_development_filespec, byte_order, addr_byte_size); + if (dsc_development_uuid.IsValid() && + dsc_development_uuid == process_shared_cache_uuid) { + dsc_filespec = dsc_development_filespec; + dsc_uuid = dsc_development_uuid; + } + } + if (!dsc_uuid.IsValid() && dsc_nondevelopment_filespec.Exists()) { + UUID dsc_nondevelopment_uuid = GetSharedCacheUUID( + dsc_nondevelopment_filespec, byte_order, addr_byte_size); + if (dsc_nondevelopment_uuid.IsValid() && + dsc_nondevelopment_uuid == process_shared_cache_uuid) { + dsc_filespec = dsc_nondevelopment_filespec; + dsc_uuid = dsc_nondevelopment_uuid; + } + } + } + + // Failing a UUID match, prefer the development dyld_shared cache if both + // are present. + if (!dsc_filespec.Exists()) { + if (dsc_development_filespec.Exists()) { + dsc_filespec = dsc_development_filespec; + } else { + dsc_filespec = dsc_nondevelopment_filespec; + } + } + + /* The dyld_cache_header has a pointer to the + dyld_cache_local_symbols_info structure (localSymbolsOffset). + The dyld_cache_local_symbols_info structure gives us three things: + 1. The start and count of the nlist records in the dyld_shared_cache + file + 2. The start and size of the strings for these nlist records + 3. The start and count of dyld_cache_local_symbols_entry entries + + There is one dyld_cache_local_symbols_entry per dylib/framework in the + dyld shared cache. + The "dylibOffset" field is the Mach-O header of this dylib/framework in + the dyld shared cache. + The dyld_cache_local_symbols_entry also lists the start of this + dylib/framework's nlist records + and the count of how many nlist records there are for this + dylib/framework. + */ + + // Process the dyld shared cache header to find the unmapped symbols + + DataBufferSP dsc_data_sp = dsc_filespec.MemoryMapFileContentsIfLocal( + 0, sizeof(struct lldb_copy_dyld_cache_header_v1)); + if (!dsc_uuid.IsValid()) { + dsc_uuid = GetSharedCacheUUID(dsc_filespec, byte_order, addr_byte_size); + } + if (dsc_data_sp) { + DataExtractor dsc_header_data(dsc_data_sp, byte_order, addr_byte_size); + + bool uuid_match = true; + if (dsc_uuid.IsValid() && process) { + if (process_shared_cache_uuid.IsValid() && + dsc_uuid != process_shared_cache_uuid) { + // The on-disk dyld_shared_cache file is not the same as the one in + // this + // process' memory, don't use it. + uuid_match = false; + ModuleSP module_sp(GetModule()); + if (module_sp) + module_sp->ReportWarning("process shared cache does not match " + "on-disk dyld_shared_cache file, some " + "symbol names will be missing."); + } + } - if (symbol_name == NULL) + offset = offsetof(struct lldb_copy_dyld_cache_header_v1, mappingOffset); + + uint32_t mappingOffset = dsc_header_data.GetU32(&offset); + + // If the mappingOffset points to a location inside the header, we've + // opened an old dyld shared cache, and should not proceed further. + if (uuid_match && + mappingOffset >= sizeof(struct lldb_copy_dyld_cache_header_v1)) { + + DataBufferSP dsc_mapping_info_data_sp = + dsc_filespec.MemoryMapFileContentsIfLocal( + mappingOffset, + sizeof(struct lldb_copy_dyld_cache_mapping_info)); + DataExtractor dsc_mapping_info_data(dsc_mapping_info_data_sp, + byte_order, addr_byte_size); + offset = 0; + + // The File addresses (from the in-memory Mach-O load commands) for + // the shared libraries + // in the shared library cache need to be adjusted by an offset to + // match up with the + // dylibOffset identifying field in the + // dyld_cache_local_symbol_entry's. This offset is + // recorded in mapping_offset_value. + const uint64_t mapping_offset_value = + dsc_mapping_info_data.GetU64(&offset); + + offset = offsetof(struct lldb_copy_dyld_cache_header_v1, + localSymbolsOffset); + uint64_t localSymbolsOffset = dsc_header_data.GetU64(&offset); + uint64_t localSymbolsSize = dsc_header_data.GetU64(&offset); + + if (localSymbolsOffset && localSymbolsSize) { + // Map the local symbols + if (DataBufferSP dsc_local_symbols_data_sp = + dsc_filespec.MemoryMapFileContentsIfLocal( + localSymbolsOffset, localSymbolsSize)) { + DataExtractor dsc_local_symbols_data(dsc_local_symbols_data_sp, + byte_order, addr_byte_size); + + offset = 0; + + typedef std::map<ConstString, uint16_t> UndefinedNameToDescMap; + typedef std::map<uint32_t, ConstString> SymbolIndexToName; + UndefinedNameToDescMap undefined_name_to_desc; + SymbolIndexToName reexport_shlib_needs_fixup; + + // Read the local_symbols_infos struct in one shot + struct lldb_copy_dyld_cache_local_symbols_info local_symbols_info; + dsc_local_symbols_data.GetU32(&offset, + &local_symbols_info.nlistOffset, 6); + + SectionSP text_section_sp( + section_list->FindSectionByName(GetSegmentNameTEXT())); + + uint32_t header_file_offset = + (text_section_sp->GetFileAddress() - mapping_offset_value); + + offset = local_symbols_info.entriesOffset; + for (uint32_t entry_index = 0; + entry_index < local_symbols_info.entriesCount; + entry_index++) { + struct lldb_copy_dyld_cache_local_symbols_entry + local_symbols_entry; + local_symbols_entry.dylibOffset = + dsc_local_symbols_data.GetU32(&offset); + local_symbols_entry.nlistStartIndex = + dsc_local_symbols_data.GetU32(&offset); + local_symbols_entry.nlistCount = + dsc_local_symbols_data.GetU32(&offset); + + if (header_file_offset == local_symbols_entry.dylibOffset) { + unmapped_local_symbols_found = local_symbols_entry.nlistCount; + + // The normal nlist code cannot correctly size the Symbols + // array, we need to allocate it here. + sym = symtab->Resize( + symtab_load_command.nsyms + m_dysymtab.nindirectsyms + + unmapped_local_symbols_found - m_dysymtab.nlocalsym); + num_syms = symtab->GetNumSymbols(); + + nlist_data_offset = + local_symbols_info.nlistOffset + + (nlist_byte_size * local_symbols_entry.nlistStartIndex); + uint32_t string_table_offset = + local_symbols_info.stringsOffset; + + for (uint32_t nlist_index = 0; + nlist_index < local_symbols_entry.nlistCount; + nlist_index++) { + ///////////////////////////// { + struct nlist_64 nlist; + if (!dsc_local_symbols_data.ValidOffsetForDataOfSize( + nlist_data_offset, nlist_byte_size)) + break; + + nlist.n_strx = dsc_local_symbols_data.GetU32_unchecked( + &nlist_data_offset); + nlist.n_type = dsc_local_symbols_data.GetU8_unchecked( + &nlist_data_offset); + nlist.n_sect = dsc_local_symbols_data.GetU8_unchecked( + &nlist_data_offset); + nlist.n_desc = dsc_local_symbols_data.GetU16_unchecked( + &nlist_data_offset); + nlist.n_value = + dsc_local_symbols_data.GetAddress_unchecked( + &nlist_data_offset); + + SymbolType type = eSymbolTypeInvalid; + const char *symbol_name = dsc_local_symbols_data.PeekCStr( + string_table_offset + nlist.n_strx); + + if (symbol_name == NULL) { // No symbol should be NULL, even the symbols with no // string values should have an offset zero which points // to an empty C-string - Host::SystemLog (Host::eSystemLogError, - "error: symbol[%u] has invalid string table offset 0x%x in %s, ignoring symbol\n", - nlist_idx, - nlist.n_strx, - module_sp->GetFileSpec().GetPath().c_str()); + Host::SystemLog( + Host::eSystemLogError, + "error: DSC unmapped local symbol[%u] has invalid " + "string table offset 0x%x in %s, ignoring symbol\n", + entry_index, nlist.n_strx, + module_sp->GetFileSpec().GetPath().c_str()); continue; - } - if (symbol_name[0] == '\0') + } + if (symbol_name[0] == '\0') symbol_name = NULL; - } - else - { - const addr_t str_addr = strtab_addr + nlist.n_strx; - Error str_error; - if (process->ReadCStringFromMemory(str_addr, memory_symbol_name, str_error)) - symbol_name = memory_symbol_name.c_str(); - } - const char *symbol_name_non_abi_mangled = NULL; - - SectionSP symbol_section; - lldb::addr_t symbol_byte_size = 0; - bool add_nlist = true; - bool is_gsym = false; - bool is_debug = ((nlist.n_type & N_STAB) != 0); - bool demangled_is_synthesized = false; - bool set_value = true; - assert (sym_idx < num_syms); - - sym[sym_idx].SetDebug (is_debug); - - if (is_debug) - { - switch (nlist.n_type) - { - case N_GSYM: - // global symbol: name,,NO_SECT,type,0 - // Sometimes the N_GSYM value contains the address. - - // FIXME: In the .o files, we have a GSYM and a debug symbol for all the ObjC data. They - // have the same address, but we want to ensure that we always find only the real symbol, - // 'cause we don't currently correctly attribute the GSYM one to the ObjCClass/Ivar/MetaClass - // symbol type. This is a temporary hack to make sure the ObjectiveC symbols get treated - // correctly. To do this right, we should coalesce all the GSYM & global symbols that have the - // same address. - is_gsym = true; - sym[sym_idx].SetExternal(true); - - if (symbol_name && symbol_name[0] == '_' && symbol_name[1] == 'O') - { + + const char *symbol_name_non_abi_mangled = NULL; + + SectionSP symbol_section; + uint32_t symbol_byte_size = 0; + bool add_nlist = true; + bool is_debug = ((nlist.n_type & N_STAB) != 0); + bool demangled_is_synthesized = false; + bool is_gsym = false; + bool set_value = true; + + assert(sym_idx < num_syms); + + sym[sym_idx].SetDebug(is_debug); + + if (is_debug) { + switch (nlist.n_type) { + case N_GSYM: + // global symbol: name,,NO_SECT,type,0 + // Sometimes the N_GSYM value contains the address. + + // FIXME: In the .o files, we have a GSYM and a debug + // symbol for all the ObjC data. They + // have the same address, but we want to ensure that + // we always find only the real symbol, + // 'cause we don't currently correctly attribute the + // GSYM one to the ObjCClass/Ivar/MetaClass + // symbol type. This is a temporary hack to make sure + // the ObjectiveC symbols get treated + // correctly. To do this right, we should coalesce + // all the GSYM & global symbols that have the + // same address. + + is_gsym = true; + sym[sym_idx].SetExternal(true); + + if (symbol_name && symbol_name[0] == '_' && + symbol_name[1] == 'O') { llvm::StringRef symbol_name_ref(symbol_name); - if (symbol_name_ref.startswith(g_objc_v2_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_metaclass)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_metaclass.size(); - type = eSymbolTypeObjCMetaClass; - demangled_is_synthesized = true; + if (symbol_name_ref.startswith( + g_objc_v2_prefix_class)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = + symbol_name + g_objc_v2_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; + + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_metaclass)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = symbol_name + + g_objc_v2_prefix_metaclass.size(); + type = eSymbolTypeObjCMetaClass; + demangled_is_synthesized = true; + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_ivar)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = + symbol_name + g_objc_v2_prefix_ivar.size(); + type = eSymbolTypeObjCIVar; + demangled_is_synthesized = true; } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_ivar)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_ivar.size(); - type = eSymbolTypeObjCIVar; - demangled_is_synthesized = true; - } - } - else - { + } else { if (nlist.n_value != 0) - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); type = eSymbolTypeData; - } - break; + } + break; - case N_FNAME: - // procedure name (f77 kludge): name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; + case N_FNAME: + // procedure name (f77 kludge): name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; - case N_FUN: - // procedure: name,,n_sect,linenumber,address - if (symbol_name) - { + case N_FUN: + // procedure: name,,n_sect,linenumber,address + if (symbol_name) { type = eSymbolTypeCode; - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - - N_FUN_addr_to_sym_idx.insert(std::make_pair(nlist.n_value, sym_idx)); - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + + N_FUN_addr_to_sym_idx.insert( + std::make_pair(nlist.n_value, sym_idx)); + // We use the current number of symbols in the + // symbol table in lieu of + // using nlist_idx in case we ever start trimming + // entries out N_FUN_indexes.push_back(sym_idx); - } - else - { + } else { type = eSymbolTypeCompiler; - if ( !N_FUN_indexes.empty() ) - { - // Copy the size of the function into the original STAB entry so we don't have - // to hunt for it later - symtab->SymbolAtIndex(N_FUN_indexes.back())->SetByteSize(nlist.n_value); - N_FUN_indexes.pop_back(); - // We don't really need the end function STAB as it contains the size which - // we already placed with the original symbol, so don't add it if we want a - // minimal symbol table - add_nlist = false; + if (!N_FUN_indexes.empty()) { + // Copy the size of the function into the original + // STAB entry so we don't have + // to hunt for it later + symtab->SymbolAtIndex(N_FUN_indexes.back()) + ->SetByteSize(nlist.n_value); + N_FUN_indexes.pop_back(); + // We don't really need the end function STAB as + // it contains the size which + // we already placed with the original symbol, so + // don't add it if we want a + // minimal symbol table + add_nlist = false; } - } - break; - - case N_STSYM: - // static symbol: name,,n_sect,type,address - N_STSYM_addr_to_sym_idx.insert(std::make_pair(nlist.n_value, sym_idx)); - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - if (symbol_name && symbol_name[0]) - { - type = ObjectFile::GetSymbolTypeFromName(symbol_name+1, eSymbolTypeData); - } - break; - - case N_LCSYM: - // .lcomm symbol: name,,n_sect,type,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeCommonBlock; - break; - - case N_BNSYM: - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - // Skip these if we want minimal symbol tables - add_nlist = false; - break; - - case N_ENSYM: - // Set the size of the N_BNSYM to the terminating index of this N_ENSYM - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - // Skip these if we want minimal symbol tables - add_nlist = false; - break; - - - case N_OPT: - // emitted with gcc2_compiled and in gcc source - type = eSymbolTypeCompiler; - break; - - case N_RSYM: - // register sym: name,,NO_SECT,type,register - type = eSymbolTypeVariable; - break; - - case N_SLINE: - // src line: 0,,n_sect,linenumber,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeLineEntry; - break; - - case N_SSYM: - // structure elt: name,,NO_SECT,type,struct_offset - type = eSymbolTypeVariableType; - break; - - case N_SO: - // source file name - type = eSymbolTypeSourceFile; - if (symbol_name == NULL) - { + } + break; + + case N_STSYM: + // static symbol: name,,n_sect,type,address + N_STSYM_addr_to_sym_idx.insert( + std::make_pair(nlist.n_value, sym_idx)); + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + if (symbol_name && symbol_name[0]) { + type = ObjectFile::GetSymbolTypeFromName( + symbol_name + 1, eSymbolTypeData); + } + break; + + case N_LCSYM: + // .lcomm symbol: name,,n_sect,type,address + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + type = eSymbolTypeCommonBlock; + break; + + case N_BNSYM: + // We use the current number of symbols in the symbol + // table in lieu of + // using nlist_idx in case we ever start trimming + // entries out + // Skip these if we want minimal symbol tables + add_nlist = false; + break; + + case N_ENSYM: + // Set the size of the N_BNSYM to the terminating + // index of this N_ENSYM + // so that we can always skip the entire symbol if we + // need to navigate + // more quickly at the source level when parsing STABS + // Skip these if we want minimal symbol tables + add_nlist = false; + break; + + case N_OPT: + // emitted with gcc2_compiled and in gcc source + type = eSymbolTypeCompiler; + break; + + case N_RSYM: + // register sym: name,,NO_SECT,type,register + type = eSymbolTypeVariable; + break; + + case N_SLINE: + // src line: 0,,n_sect,linenumber,address + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + type = eSymbolTypeLineEntry; + break; + + case N_SSYM: + // structure elt: name,,NO_SECT,type,struct_offset + type = eSymbolTypeVariableType; + break; + + case N_SO: + // source file name + type = eSymbolTypeSourceFile; + if (symbol_name == NULL) { add_nlist = false; - if (N_SO_index != UINT32_MAX) - { - // Set the size of the N_SO to the terminating index of this N_SO - // so that we can always skip the entire N_SO if we need to navigate - // more quickly at the source level when parsing STABS - symbol_ptr = symtab->SymbolAtIndex(N_SO_index); - symbol_ptr->SetByteSize(sym_idx); - symbol_ptr->SetSizeIsSibling(true); + if (N_SO_index != UINT32_MAX) { + // Set the size of the N_SO to the terminating + // index of this N_SO + // so that we can always skip the entire N_SO if + // we need to navigate + // more quickly at the source level when parsing + // STABS + symbol_ptr = symtab->SymbolAtIndex(N_SO_index); + symbol_ptr->SetByteSize(sym_idx); + symbol_ptr->SetSizeIsSibling(true); } N_NSYM_indexes.clear(); N_INCL_indexes.clear(); @@ -3936,2204 +3034,3061 @@ ObjectFileMachO::ParseSymtab () N_COMM_indexes.clear(); N_FUN_indexes.clear(); N_SO_index = UINT32_MAX; - } - else - { - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - const bool N_SO_has_full_path = symbol_name[0] == '/'; - if (N_SO_has_full_path) - { - if ((N_SO_index == sym_idx - 1) && ((sym_idx - 1) < num_syms)) - { - // We have two consecutive N_SO entries where the first contains a directory - // and the second contains a full path. - sym[sym_idx - 1].GetMangled().SetValue(ConstString(symbol_name), false); - m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; - add_nlist = false; - } - else - { - // This is the first entry in a N_SO that contains a directory or - // a full path to the source file - N_SO_index = sym_idx; - } - } - else if ((N_SO_index == sym_idx - 1) && ((sym_idx - 1) < num_syms)) - { - // This is usually the second N_SO entry that contains just the filename, - // so here we combine it with the first one if we are minimizing the symbol table - const char *so_path = sym[sym_idx - 1].GetMangled().GetDemangledName(lldb::eLanguageTypeUnknown).AsCString(); - if (so_path && so_path[0]) - { - std::string full_so_path (so_path); - const size_t double_slash_pos = full_so_path.find("//"); - if (double_slash_pos != std::string::npos) - { - // The linker has been generating bad N_SO entries with doubled up paths - // in the format "%s%s" where the first string in the DW_AT_comp_dir, - // and the second is the directory for the source file so you end up with - // a path that looks like "/tmp/src//tmp/src/" - FileSpec so_dir(so_path, false); - if (!so_dir.Exists()) - { - so_dir.SetFile(&full_so_path[double_slash_pos + 1], false); - if (so_dir.Exists()) - { - // Trim off the incorrect path - full_so_path.erase(0, double_slash_pos + 1); - } - } + } else { + // We use the current number of symbols in the + // symbol table in lieu of + // using nlist_idx in case we ever start trimming + // entries out + const bool N_SO_has_full_path = + symbol_name[0] == '/'; + if (N_SO_has_full_path) { + if ((N_SO_index == sym_idx - 1) && + ((sym_idx - 1) < num_syms)) { + // We have two consecutive N_SO entries where + // the first contains a directory + // and the second contains a full path. + sym[sym_idx - 1].GetMangled().SetValue( + ConstString(symbol_name), false); + m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; + add_nlist = false; + } else { + // This is the first entry in a N_SO that + // contains a directory or + // a full path to the source file + N_SO_index = sym_idx; + } + } else if ((N_SO_index == sym_idx - 1) && + ((sym_idx - 1) < num_syms)) { + // This is usually the second N_SO entry that + // contains just the filename, + // so here we combine it with the first one if we + // are minimizing the symbol table + const char *so_path = + sym[sym_idx - 1] + .GetMangled() + .GetDemangledName( + lldb::eLanguageTypeUnknown) + .AsCString(); + if (so_path && so_path[0]) { + std::string full_so_path(so_path); + const size_t double_slash_pos = + full_so_path.find("//"); + if (double_slash_pos != std::string::npos) { + // The linker has been generating bad N_SO + // entries with doubled up paths + // in the format "%s%s" where the first string + // in the DW_AT_comp_dir, + // and the second is the directory for the + // source file so you end up with + // a path that looks like "/tmp/src//tmp/src/" + FileSpec so_dir(so_path, false); + if (!so_dir.Exists()) { + so_dir.SetFile( + &full_so_path[double_slash_pos + 1], + false); + if (so_dir.Exists()) { + // Trim off the incorrect path + full_so_path.erase(0, + double_slash_pos + 1); } - if (*full_so_path.rbegin() != '/') - full_so_path += '/'; - full_so_path += symbol_name; - sym[sym_idx - 1].GetMangled().SetValue(ConstString(full_so_path.c_str()), false); - add_nlist = false; - m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; + } } + if (*full_so_path.rbegin() != '/') + full_so_path += '/'; + full_so_path += symbol_name; + sym[sym_idx - 1].GetMangled().SetValue( + ConstString(full_so_path.c_str()), false); + add_nlist = false; + m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; + } + } else { + // This could be a relative path to a N_SO + N_SO_index = sym_idx; } - else - { - // This could be a relative path to a N_SO - N_SO_index = sym_idx; - } - } - break; - - case N_OSO: - // object file name: name,,0,0,st_mtime - type = eSymbolTypeObjectFile; - break; - - case N_LSYM: - // local sym: name,,NO_SECT,type,offset - type = eSymbolTypeLocal; - break; - - //---------------------------------------------------------------------- - // INCL scopes - //---------------------------------------------------------------------- - case N_BINCL: - // include file beginning: name,,NO_SECT,0,sum - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - N_INCL_indexes.push_back(sym_idx); - type = eSymbolTypeScopeBegin; - break; - - case N_EINCL: - // include file end: name,,NO_SECT,0,0 - // Set the size of the N_BINCL to the terminating index of this N_EINCL - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - if ( !N_INCL_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_INCL_indexes.back()); + } + break; + + case N_OSO: + // object file name: name,,0,0,st_mtime + type = eSymbolTypeObjectFile; + break; + + case N_LSYM: + // local sym: name,,NO_SECT,type,offset + type = eSymbolTypeLocal; + break; + + //---------------------------------------------------------------------- + // INCL scopes + //---------------------------------------------------------------------- + case N_BINCL: + // include file beginning: name,,NO_SECT,0,sum + // We use the current number of symbols in the symbol + // table in lieu of + // using nlist_idx in case we ever start trimming + // entries out + N_INCL_indexes.push_back(sym_idx); + type = eSymbolTypeScopeBegin; + break; + + case N_EINCL: + // include file end: name,,NO_SECT,0,0 + // Set the size of the N_BINCL to the terminating + // index of this N_EINCL + // so that we can always skip the entire symbol if we + // need to navigate + // more quickly at the source level when parsing STABS + if (!N_INCL_indexes.empty()) { + symbol_ptr = + symtab->SymbolAtIndex(N_INCL_indexes.back()); symbol_ptr->SetByteSize(sym_idx + 1); symbol_ptr->SetSizeIsSibling(true); N_INCL_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_SOL: - // #included file name: name,,n_sect,0,address - type = eSymbolTypeHeaderFile; - - // We currently don't use the header files on darwin - add_nlist = false; - break; - - case N_PARAMS: - // compiler parameters: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_VERSION: - // compiler version: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_OLEVEL: - // compiler -O level: name,,NO_SECT,0,0 - type = eSymbolTypeCompiler; - break; - - case N_PSYM: - // parameter: name,,NO_SECT,type,offset - type = eSymbolTypeVariable; - break; - - case N_ENTRY: - // alternate entry: name,,n_sect,linenumber,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - type = eSymbolTypeLineEntry; - break; - - //---------------------------------------------------------------------- - // Left and Right Braces - //---------------------------------------------------------------------- - case N_LBRAC: - // left bracket: 0,,NO_SECT,nesting level,address - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - N_BRAC_indexes.push_back(sym_idx); - type = eSymbolTypeScopeBegin; - break; - - case N_RBRAC: - // right bracket: 0,,NO_SECT,nesting level,address - // Set the size of the N_LBRAC to the terminating index of this N_RBRAC - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - if ( !N_BRAC_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_BRAC_indexes.back()); + } + type = eSymbolTypeScopeEnd; + break; + + case N_SOL: + // #included file name: name,,n_sect,0,address + type = eSymbolTypeHeaderFile; + + // We currently don't use the header files on darwin + add_nlist = false; + break; + + case N_PARAMS: + // compiler parameters: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; + + case N_VERSION: + // compiler version: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; + + case N_OLEVEL: + // compiler -O level: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; + + case N_PSYM: + // parameter: name,,NO_SECT,type,offset + type = eSymbolTypeVariable; + break; + + case N_ENTRY: + // alternate entry: name,,n_sect,linenumber,address + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + type = eSymbolTypeLineEntry; + break; + + //---------------------------------------------------------------------- + // Left and Right Braces + //---------------------------------------------------------------------- + case N_LBRAC: + // left bracket: 0,,NO_SECT,nesting level,address + // We use the current number of symbols in the symbol + // table in lieu of + // using nlist_idx in case we ever start trimming + // entries out + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + N_BRAC_indexes.push_back(sym_idx); + type = eSymbolTypeScopeBegin; + break; + + case N_RBRAC: + // right bracket: 0,,NO_SECT,nesting level,address + // Set the size of the N_LBRAC to the terminating + // index of this N_RBRAC + // so that we can always skip the entire symbol if we + // need to navigate + // more quickly at the source level when parsing STABS + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + if (!N_BRAC_indexes.empty()) { + symbol_ptr = + symtab->SymbolAtIndex(N_BRAC_indexes.back()); symbol_ptr->SetByteSize(sym_idx + 1); symbol_ptr->SetSizeIsSibling(true); N_BRAC_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_EXCL: - // deleted include file: name,,NO_SECT,0,sum - type = eSymbolTypeHeaderFile; - break; - - //---------------------------------------------------------------------- - // COMM scopes - //---------------------------------------------------------------------- - case N_BCOMM: - // begin common: name,,NO_SECT,0,0 - // We use the current number of symbols in the symbol table in lieu of - // using nlist_idx in case we ever start trimming entries out - type = eSymbolTypeScopeBegin; - N_COMM_indexes.push_back(sym_idx); - break; - - case N_ECOML: - // end common (local name): 0,,n_sect,0,address - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - LLVM_FALLTHROUGH; - - case N_ECOMM: - // end common: name,,n_sect,0,0 - // Set the size of the N_BCOMM to the terminating index of this N_ECOMM/N_ECOML - // so that we can always skip the entire symbol if we need to navigate - // more quickly at the source level when parsing STABS - if ( !N_COMM_indexes.empty() ) - { - symbol_ptr = symtab->SymbolAtIndex(N_COMM_indexes.back()); + } + type = eSymbolTypeScopeEnd; + break; + + case N_EXCL: + // deleted include file: name,,NO_SECT,0,sum + type = eSymbolTypeHeaderFile; + break; + + //---------------------------------------------------------------------- + // COMM scopes + //---------------------------------------------------------------------- + case N_BCOMM: + // begin common: name,,NO_SECT,0,0 + // We use the current number of symbols in the symbol + // table in lieu of + // using nlist_idx in case we ever start trimming + // entries out + type = eSymbolTypeScopeBegin; + N_COMM_indexes.push_back(sym_idx); + break; + + case N_ECOML: + // end common (local name): 0,,n_sect,0,address + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + // Fall through + + case N_ECOMM: + // end common: name,,n_sect,0,0 + // Set the size of the N_BCOMM to the terminating + // index of this N_ECOMM/N_ECOML + // so that we can always skip the entire symbol if we + // need to navigate + // more quickly at the source level when parsing STABS + if (!N_COMM_indexes.empty()) { + symbol_ptr = + symtab->SymbolAtIndex(N_COMM_indexes.back()); symbol_ptr->SetByteSize(sym_idx + 1); symbol_ptr->SetSizeIsSibling(true); N_COMM_indexes.pop_back(); - } - type = eSymbolTypeScopeEnd; - break; - - case N_LENG: - // second stab entry with length information - type = eSymbolTypeAdditional; - break; + } + type = eSymbolTypeScopeEnd; + break; - default: break; - } - } - else - { - //uint8_t n_pext = N_PEXT & nlist.n_type; - uint8_t n_type = N_TYPE & nlist.n_type; - sym[sym_idx].SetExternal((N_EXT & nlist.n_type) != 0); + case N_LENG: + // second stab entry with length information + type = eSymbolTypeAdditional; + break; - switch (n_type) - { - case N_INDR: - { - const char *reexport_name_cstr = strtab_data.PeekCStr(nlist.n_value); - if (reexport_name_cstr && reexport_name_cstr[0]) - { - type = eSymbolTypeReExported; - ConstString reexport_name(reexport_name_cstr + ((reexport_name_cstr[0] == '_') ? 1 : 0)); - sym[sym_idx].SetReExportedSymbolName(reexport_name); - set_value = false; - reexport_shlib_needs_fixup[sym_idx] = reexport_name; - indirect_symbol_names.insert(ConstString(symbol_name + ((symbol_name[0] == '_') ? 1 : 0))); - } - else - type = eSymbolTypeUndefined; - } - break; - - case N_UNDF: - if (symbol_name && symbol_name[0]) - { - ConstString undefined_name(symbol_name + ((symbol_name[0] == '_') ? 1 : 0)); - undefined_name_to_desc[undefined_name] = nlist.n_desc; + default: + break; } - LLVM_FALLTHROUGH; - - case N_PBUD: - type = eSymbolTypeUndefined; - break; - - case N_ABS: - type = eSymbolTypeAbsolute; - break; - - case N_SECT: - { - symbol_section = section_info.GetSection (nlist.n_sect, nlist.n_value); - - if (!symbol_section) - { - // TODO: warn about this? - add_nlist = false; + } else { + // uint8_t n_pext = N_PEXT & nlist.n_type; + uint8_t n_type = N_TYPE & nlist.n_type; + sym[sym_idx].SetExternal((N_EXT & nlist.n_type) != 0); + + switch (n_type) { + case N_INDR: { + const char *reexport_name_cstr = + strtab_data.PeekCStr(nlist.n_value); + if (reexport_name_cstr && reexport_name_cstr[0]) { + type = eSymbolTypeReExported; + ConstString reexport_name( + reexport_name_cstr + + ((reexport_name_cstr[0] == '_') ? 1 : 0)); + sym[sym_idx].SetReExportedSymbolName(reexport_name); + set_value = false; + reexport_shlib_needs_fixup[sym_idx] = reexport_name; + indirect_symbol_names.insert( + ConstString(symbol_name + + ((symbol_name[0] == '_') ? 1 : 0))); + } else + type = eSymbolTypeUndefined; + } break; + + case N_UNDF: + if (symbol_name && symbol_name[0]) { + ConstString undefined_name( + symbol_name + + ((symbol_name[0] == '_') ? 1 : 0)); + undefined_name_to_desc[undefined_name] = + nlist.n_desc; + } + // Fall through + case N_PBUD: + type = eSymbolTypeUndefined; + break; + + case N_ABS: + type = eSymbolTypeAbsolute; + break; + + case N_SECT: { + symbol_section = section_info.GetSection( + nlist.n_sect, nlist.n_value); + + if (symbol_section == NULL) { + // TODO: warn about this? + add_nlist = false; + break; + } + + if (TEXT_eh_frame_sectID == nlist.n_sect) { + type = eSymbolTypeException; + } else { + uint32_t section_type = + symbol_section->Get() & SECTION_TYPE; + + switch (section_type) { + case S_CSTRING_LITERALS: + type = eSymbolTypeData; + break; // section with only literal C strings + case S_4BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 4 byte literals + case S_8BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 8 byte literals + case S_LITERAL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only pointers to literals + case S_NON_LAZY_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only non-lazy symbol + // pointers + case S_LAZY_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only lazy symbol pointers + case S_SYMBOL_STUBS: + type = eSymbolTypeTrampoline; + break; // section with only symbol stubs, byte + // size of stub in the reserved2 field + case S_MOD_INIT_FUNC_POINTERS: + type = eSymbolTypeCode; + break; // section with only function pointers for + // initialization + case S_MOD_TERM_FUNC_POINTERS: + type = eSymbolTypeCode; + break; // section with only function pointers for + // termination + case S_INTERPOSING: + type = eSymbolTypeTrampoline; + break; // section with only pairs of function + // pointers for interposing + case S_16BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 16 byte literals + case S_DTRACE_DOF: + type = eSymbolTypeInstrumentation; + break; + case S_LAZY_DYLIB_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; + default: + switch (symbol_section->GetType()) { + case lldb::eSectionTypeCode: + type = eSymbolTypeCode; + break; + case eSectionTypeData: + case eSectionTypeDataCString: // Inlined C string + // data + case eSectionTypeDataCStringPointers: // Pointers + // to C + // string + // data + case eSectionTypeDataSymbolAddress: // Address of + // a symbol in + // the symbol + // table + case eSectionTypeData4: + case eSectionTypeData8: + case eSectionTypeData16: + type = eSymbolTypeData; + break; + default: break; + } + break; } - if (TEXT_eh_frame_sectID == nlist.n_sect) - { - type = eSymbolTypeException; - } - else - { - uint32_t section_type = symbol_section->Get() & SECTION_TYPE; - - switch (section_type) - { - case S_CSTRING_LITERALS: type = eSymbolTypeData; break; // section with only literal C strings - case S_4BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 4 byte literals - case S_8BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 8 byte literals - case S_LITERAL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only pointers to literals - case S_NON_LAZY_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only non-lazy symbol pointers - case S_LAZY_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; // section with only lazy symbol pointers - case S_SYMBOL_STUBS: type = eSymbolTypeTrampoline; break; // section with only symbol stubs, byte size of stub in the reserved2 field - case S_MOD_INIT_FUNC_POINTERS: type = eSymbolTypeCode; break; // section with only function pointers for initialization - case S_MOD_TERM_FUNC_POINTERS: type = eSymbolTypeCode; break; // section with only function pointers for termination - case S_INTERPOSING: type = eSymbolTypeTrampoline; break; // section with only pairs of function pointers for interposing - case S_16BYTE_LITERALS: type = eSymbolTypeData; break; // section with only 16 byte literals - case S_DTRACE_DOF: type = eSymbolTypeInstrumentation; break; - case S_LAZY_DYLIB_SYMBOL_POINTERS: type = eSymbolTypeTrampoline; break; - default: - switch (symbol_section->GetType()) - { - case lldb::eSectionTypeCode: - type = eSymbolTypeCode; - break; - case eSectionTypeData: - case eSectionTypeDataCString: // Inlined C string data - case eSectionTypeDataCStringPointers: // Pointers to C string data - case eSectionTypeDataSymbolAddress: // Address of a symbol in the symbol table - case eSectionTypeData4: - case eSectionTypeData8: - case eSectionTypeData16: - type = eSymbolTypeData; - break; - default: - break; + if (type == eSymbolTypeInvalid) { + const char *symbol_sect_name = + symbol_section->GetName().AsCString(); + if (symbol_section->IsDescendant( + text_section_sp.get())) { + if (symbol_section->IsClear( + S_ATTR_PURE_INSTRUCTIONS | + S_ATTR_SELF_MODIFYING_CODE | + S_ATTR_SOME_INSTRUCTIONS)) + type = eSymbolTypeData; + else + type = eSymbolTypeCode; + } else if (symbol_section->IsDescendant( + data_section_sp.get()) || + symbol_section->IsDescendant( + data_dirty_section_sp.get()) || + symbol_section->IsDescendant( + data_const_section_sp.get())) { + if (symbol_sect_name && + ::strstr(symbol_sect_name, "__objc") == + symbol_sect_name) { + type = eSymbolTypeRuntime; + + if (symbol_name) { + llvm::StringRef symbol_name_ref( + symbol_name); + if (symbol_name_ref.startswith("_OBJC_")) { + static const llvm::StringRef + g_objc_v2_prefix_class( + "_OBJC_CLASS_$_"); + static const llvm::StringRef + g_objc_v2_prefix_metaclass( + "_OBJC_METACLASS_$_"); + static const llvm::StringRef + g_objc_v2_prefix_ivar( + "_OBJC_IVAR_$_"); + if (symbol_name_ref.startswith( + g_objc_v2_prefix_class)) { + symbol_name_non_abi_mangled = + symbol_name + 1; + symbol_name = + symbol_name + + g_objc_v2_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; + } else if ( + symbol_name_ref.startswith( + g_objc_v2_prefix_metaclass)) { + symbol_name_non_abi_mangled = + symbol_name + 1; + symbol_name = + symbol_name + + g_objc_v2_prefix_metaclass.size(); + type = eSymbolTypeObjCMetaClass; + demangled_is_synthesized = true; + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_ivar)) { + symbol_name_non_abi_mangled = + symbol_name + 1; + symbol_name = + symbol_name + + g_objc_v2_prefix_ivar.size(); + type = eSymbolTypeObjCIVar; + demangled_is_synthesized = true; + } } - break; + } + } else if (symbol_sect_name && + ::strstr(symbol_sect_name, + "__gcc_except_tab") == + symbol_sect_name) { + type = eSymbolTypeException; + } else { + type = eSymbolTypeData; } - - if (type == eSymbolTypeInvalid) - { - const char *symbol_sect_name = symbol_section->GetName().AsCString(); - if (symbol_section->IsDescendant (text_section_sp.get())) - { - if (symbol_section->IsClear(S_ATTR_PURE_INSTRUCTIONS | - S_ATTR_SELF_MODIFYING_CODE | - S_ATTR_SOME_INSTRUCTIONS)) - type = eSymbolTypeData; - else - type = eSymbolTypeCode; - } - else - if (symbol_section->IsDescendant(data_section_sp.get()) || - symbol_section->IsDescendant(data_dirty_section_sp.get()) || - symbol_section->IsDescendant(data_const_section_sp.get())) - { - if (symbol_sect_name && ::strstr (symbol_sect_name, "__objc") == symbol_sect_name) - { - type = eSymbolTypeRuntime; - - if (symbol_name) - { - llvm::StringRef symbol_name_ref(symbol_name); - if (symbol_name_ref.startswith("_OBJC_")) - { - static const llvm::StringRef g_objc_v2_prefix_class ("_OBJC_CLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_metaclass ("_OBJC_METACLASS_$_"); - static const llvm::StringRef g_objc_v2_prefix_ivar ("_OBJC_IVAR_$_"); - if (symbol_name_ref.startswith(g_objc_v2_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_metaclass)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_metaclass.size(); - type = eSymbolTypeObjCMetaClass; - demangled_is_synthesized = true; - } - else if (symbol_name_ref.startswith(g_objc_v2_prefix_ivar)) - { - symbol_name_non_abi_mangled = symbol_name + 1; - symbol_name = symbol_name + g_objc_v2_prefix_ivar.size(); - type = eSymbolTypeObjCIVar; - demangled_is_synthesized = true; - } - } - } - } - else - if (symbol_sect_name && ::strstr (symbol_sect_name, "__gcc_except_tab") == symbol_sect_name) - { - type = eSymbolTypeException; - } - else - { - type = eSymbolTypeData; - } - } - else - if (symbol_sect_name && ::strstr (symbol_sect_name, "__IMPORT") == symbol_sect_name) - { - type = eSymbolTypeTrampoline; - } - else - if (symbol_section->IsDescendant(objc_section_sp.get())) - { - type = eSymbolTypeRuntime; - if (symbol_name && symbol_name[0] == '.') - { - llvm::StringRef symbol_name_ref(symbol_name); - static const llvm::StringRef g_objc_v1_prefix_class (".objc_class_name_"); - if (symbol_name_ref.startswith(g_objc_v1_prefix_class)) - { - symbol_name_non_abi_mangled = symbol_name; - symbol_name = symbol_name + g_objc_v1_prefix_class.size(); - type = eSymbolTypeObjCClass; - demangled_is_synthesized = true; - } - } - } + } else if (symbol_sect_name && + ::strstr(symbol_sect_name, + "__IMPORT") == + symbol_sect_name) { + type = eSymbolTypeTrampoline; + } else if (symbol_section->IsDescendant( + objc_section_sp.get())) { + type = eSymbolTypeRuntime; + if (symbol_name && symbol_name[0] == '.') { + llvm::StringRef symbol_name_ref(symbol_name); + static const llvm::StringRef + g_objc_v1_prefix_class( + ".objc_class_name_"); + if (symbol_name_ref.startswith( + g_objc_v1_prefix_class)) { + symbol_name_non_abi_mangled = symbol_name; + symbol_name = symbol_name + + g_objc_v1_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; + } } + } } + } + } break; } - break; - } - } - - if (add_nlist) - { - uint64_t symbol_value = nlist.n_value; - - if (symbol_name_non_abi_mangled) - { - sym[sym_idx].GetMangled().SetMangledName (ConstString(symbol_name_non_abi_mangled)); - sym[sym_idx].GetMangled().SetDemangledName (ConstString(symbol_name)); - } - else - { - bool symbol_name_is_mangled = false; - - if (symbol_name && symbol_name[0] == '_') - { + } + + if (add_nlist) { + uint64_t symbol_value = nlist.n_value; + if (symbol_name_non_abi_mangled) { + sym[sym_idx].GetMangled().SetMangledName( + ConstString(symbol_name_non_abi_mangled)); + sym[sym_idx].GetMangled().SetDemangledName( + ConstString(symbol_name)); + } else { + bool symbol_name_is_mangled = false; + + if (symbol_name && symbol_name[0] == '_') { symbol_name_is_mangled = symbol_name[1] == '_'; - symbol_name++; // Skip the leading underscore - } + symbol_name++; // Skip the leading underscore + } - if (symbol_name) - { + if (symbol_name) { ConstString const_symbol_name(symbol_name); - sym[sym_idx].GetMangled().SetValue(const_symbol_name, symbol_name_is_mangled); + sym[sym_idx].GetMangled().SetValue( + const_symbol_name, symbol_name_is_mangled); + if (is_gsym && is_debug) { + const char *gsym_name = + sym[sym_idx] + .GetMangled() + .GetName(lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) + .GetCString(); + if (gsym_name) + N_GSYM_name_to_sym_idx[gsym_name] = sym_idx; + } + } } - } - - if (is_gsym) - { - const char *gsym_name = sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled).GetCString(); - if (gsym_name) - N_GSYM_name_to_sym_idx[gsym_name] = sym_idx; - } - - if (symbol_section) - { - const addr_t section_file_addr = symbol_section->GetFileAddress(); - if (symbol_byte_size == 0 && function_starts_count > 0) - { + if (symbol_section) { + const addr_t section_file_addr = + symbol_section->GetFileAddress(); + if (symbol_byte_size == 0 && + function_starts_count > 0) { addr_t symbol_lookup_file_addr = nlist.n_value; - // Do an exact address match for non-ARM addresses, else get the closest since - // the symbol might be a thumb symbol which has an address with bit zero set - FunctionStarts::Entry *func_start_entry = function_starts.FindEntry (symbol_lookup_file_addr, !is_arm); - if (is_arm && func_start_entry) - { - // Verify that the function start address is the symbol address (ARM) - // or the symbol address + 1 (thumb) - if (func_start_entry->addr != symbol_lookup_file_addr && - func_start_entry->addr != (symbol_lookup_file_addr + 1)) - { - // Not the right entry, NULL it out... - func_start_entry = NULL; - } + // Do an exact address match for non-ARM addresses, + // else get the closest since + // the symbol might be a thumb symbol which has an + // address with bit zero set + FunctionStarts::Entry *func_start_entry = + function_starts.FindEntry( + symbol_lookup_file_addr, !is_arm); + if (is_arm && func_start_entry) { + // Verify that the function start address is the + // symbol address (ARM) + // or the symbol address + 1 (thumb) + if (func_start_entry->addr != + symbol_lookup_file_addr && + func_start_entry->addr != + (symbol_lookup_file_addr + 1)) { + // Not the right entry, NULL it out... + func_start_entry = NULL; + } } - if (func_start_entry) - { - func_start_entry->data = true; - - addr_t symbol_file_addr = func_start_entry->addr; + if (func_start_entry) { + func_start_entry->data = true; + + addr_t symbol_file_addr = func_start_entry->addr; + uint32_t symbol_flags = 0; + if (is_arm) { + if (symbol_file_addr & 1) + symbol_flags = + MACHO_NLIST_ARM_SYMBOL_IS_THUMB; + symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; + } + + const FunctionStarts::Entry + *next_func_start_entry = + function_starts.FindNextEntry( + func_start_entry); + const addr_t section_end_file_addr = + section_file_addr + + symbol_section->GetByteSize(); + if (next_func_start_entry) { + addr_t next_symbol_file_addr = + next_func_start_entry->addr; + // Be sure the clear the Thumb address bit when + // we calculate the size + // from the current and next address if (is_arm) - symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - - const FunctionStarts::Entry *next_func_start_entry = function_starts.FindNextEntry (func_start_entry); - const addr_t section_end_file_addr = section_file_addr + symbol_section->GetByteSize(); - if (next_func_start_entry) - { - addr_t next_symbol_file_addr = next_func_start_entry->addr; - // Be sure the clear the Thumb address bit when we calculate the size - // from the current and next address - if (is_arm) - next_symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - symbol_byte_size = std::min<lldb::addr_t>(next_symbol_file_addr - symbol_file_addr, section_end_file_addr - symbol_file_addr); - } - else - { - symbol_byte_size = section_end_file_addr - symbol_file_addr; - } + next_symbol_file_addr &= + THUMB_ADDRESS_BIT_MASK; + symbol_byte_size = std::min<lldb::addr_t>( + next_symbol_file_addr - symbol_file_addr, + section_end_file_addr - symbol_file_addr); + } else { + symbol_byte_size = + section_end_file_addr - symbol_file_addr; + } } + } + symbol_value -= section_file_addr; } - symbol_value -= section_file_addr; - } - if (is_debug == false) - { - if (type == eSymbolTypeCode) - { - // See if we can find a N_FUN entry for any code symbols. - // If we do find a match, and the name matches, then we - // can merge the two into just the function symbol to avoid + if (is_debug == false) { + if (type == eSymbolTypeCode) { + // See if we can find a N_FUN entry for any code + // symbols. + // If we do find a match, and the name matches, then + // we + // can merge the two into just the function symbol + // to avoid // duplicate entries in the symbol table - std::pair<ValueToSymbolIndexMap::const_iterator, ValueToSymbolIndexMap::const_iterator> range; - range = N_FUN_addr_to_sym_idx.equal_range(nlist.n_value); - if (range.first != range.second) - { - bool found_it = false; - for (ValueToSymbolIndexMap::const_iterator pos = range.first; pos != range.second; ++pos) - { - if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled) == sym[pos->second].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) - { - m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; - // We just need the flags from the linker symbol, so put these flags - // into the N_FUN flags to avoid duplicate symbols in the symbol table - sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); - sym[pos->second].SetFlags (nlist.n_type << 16 | nlist.n_desc); - if (resolver_addresses.find(nlist.n_value) != resolver_addresses.end()) - sym[pos->second].SetType (eSymbolTypeResolver); - sym[sym_idx].Clear(); - found_it = true; - break; - } + std::pair<ValueToSymbolIndexMap::const_iterator, + ValueToSymbolIndexMap::const_iterator> + range; + range = N_FUN_addr_to_sym_idx.equal_range( + nlist.n_value); + if (range.first != range.second) { + bool found_it = false; + for (ValueToSymbolIndexMap::const_iterator pos = + range.first; + pos != range.second; ++pos) { + if (sym[sym_idx].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) == + sym[pos->second].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled)) { + m_nlist_idx_to_sym_idx[nlist_idx] = + pos->second; + // We just need the flags from the linker + // symbol, so put these flags + // into the N_FUN flags to avoid duplicate + // symbols in the symbol table + sym[pos->second].SetExternal( + sym[sym_idx].IsExternal()); + sym[pos->second].SetFlags(nlist.n_type << 16 | + nlist.n_desc); + if (resolver_addresses.find(nlist.n_value) != + resolver_addresses.end()) + sym[pos->second].SetType( + eSymbolTypeResolver); + sym[sym_idx].Clear(); + found_it = true; + break; } - if (found_it) - continue; - } - else - { - if (resolver_addresses.find(nlist.n_value) != resolver_addresses.end()) - type = eSymbolTypeResolver; + } + if (found_it) + continue; + } else { + if (resolver_addresses.find(nlist.n_value) != + resolver_addresses.end()) + type = eSymbolTypeResolver; } - } - else if (type == eSymbolTypeData || - type == eSymbolTypeObjCClass || - type == eSymbolTypeObjCMetaClass || - type == eSymbolTypeObjCIVar ) - { - // See if we can find a N_STSYM entry for any data symbols. - // If we do find a match, and the name matches, then we - // can merge the two into just the Static symbol to avoid + } else if (type == eSymbolTypeData || + type == eSymbolTypeObjCClass || + type == eSymbolTypeObjCMetaClass || + type == eSymbolTypeObjCIVar) { + // See if we can find a N_STSYM entry for any data + // symbols. + // If we do find a match, and the name matches, then + // we + // can merge the two into just the Static symbol to + // avoid // duplicate entries in the symbol table - std::pair<ValueToSymbolIndexMap::const_iterator, ValueToSymbolIndexMap::const_iterator> range; - range = N_STSYM_addr_to_sym_idx.equal_range(nlist.n_value); - if (range.first != range.second) - { - bool found_it = false; - for (ValueToSymbolIndexMap::const_iterator pos = range.first; pos != range.second; ++pos) - { - if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled) == sym[pos->second].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) - { - m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; - // We just need the flags from the linker symbol, so put these flags - // into the N_STSYM flags to avoid duplicate symbols in the symbol table - sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); - sym[pos->second].SetFlags (nlist.n_type << 16 | nlist.n_desc); - sym[sym_idx].Clear(); - found_it = true; - break; - } + std::pair<ValueToSymbolIndexMap::const_iterator, + ValueToSymbolIndexMap::const_iterator> + range; + range = N_STSYM_addr_to_sym_idx.equal_range( + nlist.n_value); + if (range.first != range.second) { + bool found_it = false; + for (ValueToSymbolIndexMap::const_iterator pos = + range.first; + pos != range.second; ++pos) { + if (sym[sym_idx].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) == + sym[pos->second].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled)) { + m_nlist_idx_to_sym_idx[nlist_idx] = + pos->second; + // We just need the flags from the linker + // symbol, so put these flags + // into the N_STSYM flags to avoid duplicate + // symbols in the symbol table + sym[pos->second].SetExternal( + sym[sym_idx].IsExternal()); + sym[pos->second].SetFlags(nlist.n_type << 16 | + nlist.n_desc); + sym[sym_idx].Clear(); + found_it = true; + break; } - if (found_it) - continue; - } - else - { - // Combine N_GSYM stab entries with the non stab symbol - const char *gsym_name = sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled).GetCString(); - if (gsym_name) - { - ConstNameToSymbolIndexMap::const_iterator pos = N_GSYM_name_to_sym_idx.find(gsym_name); - if (pos != N_GSYM_name_to_sym_idx.end()) - { - const uint32_t GSYM_sym_idx = pos->second; - m_nlist_idx_to_sym_idx[nlist_idx] = GSYM_sym_idx; - // Copy the address, because often the N_GSYM address has an invalid address of zero - // when the global is a common symbol - sym[GSYM_sym_idx].GetAddressRef().SetSection (symbol_section); - sym[GSYM_sym_idx].GetAddressRef().SetOffset (symbol_value); - // We just need the flags from the linker symbol, so put these flags - // into the N_GSYM flags to avoid duplicate symbols in the symbol table - sym[GSYM_sym_idx].SetFlags (nlist.n_type << 16 | nlist.n_desc); - sym[sym_idx].Clear(); - continue; - } + } + if (found_it) + continue; + } else { + const char *gsym_name = + sym[sym_idx] + .GetMangled() + .GetName(lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) + .GetCString(); + if (gsym_name) { + // Combine N_GSYM stab entries with the non stab + // symbol + ConstNameToSymbolIndexMap::const_iterator pos = + N_GSYM_name_to_sym_idx.find(gsym_name); + if (pos != N_GSYM_name_to_sym_idx.end()) { + const uint32_t GSYM_sym_idx = pos->second; + m_nlist_idx_to_sym_idx[nlist_idx] = + GSYM_sym_idx; + // Copy the address, because often the N_GSYM + // address has an invalid address of zero + // when the global is a common symbol + sym[GSYM_sym_idx].GetAddressRef().SetSection( + symbol_section); + sym[GSYM_sym_idx].GetAddressRef().SetOffset( + symbol_value); + // We just need the flags from the linker + // symbol, so put these flags + // into the N_GSYM flags to avoid duplicate + // symbols in the symbol table + sym[GSYM_sym_idx].SetFlags( + nlist.n_type << 16 | nlist.n_desc); + sym[sym_idx].Clear(); + continue; } + } } + } } - } - - sym[sym_idx].SetID (nlist_idx); - sym[sym_idx].SetType (type); - if (set_value) - { - sym[sym_idx].GetAddressRef().SetSection (symbol_section); - sym[sym_idx].GetAddressRef().SetOffset (symbol_value); - } - sym[sym_idx].SetFlags (nlist.n_type << 16 | nlist.n_desc); - if (symbol_byte_size > 0) - sym[sym_idx].SetByteSize(symbol_byte_size); + sym[sym_idx].SetID(nlist_idx); + sym[sym_idx].SetType(type); + if (set_value) { + sym[sym_idx].GetAddressRef().SetSection( + symbol_section); + sym[sym_idx].GetAddressRef().SetOffset(symbol_value); + } + sym[sym_idx].SetFlags(nlist.n_type << 16 | + nlist.n_desc); - if (demangled_is_synthesized) - sym[sym_idx].SetDemangledNameIsSynthesized(true); + if (symbol_byte_size > 0) + sym[sym_idx].SetByteSize(symbol_byte_size); - ++sym_idx; - } - else - { - sym[sym_idx].Clear(); + if (demangled_is_synthesized) + sym[sym_idx].SetDemangledNameIsSynthesized(true); + ++sym_idx; + } else { + sym[sym_idx].Clear(); + } + } + ///////////////////////////// + } + break; // No more entries to consider } - } + } - for (const auto &pos :reexport_shlib_needs_fixup) - { + for (const auto &pos : reexport_shlib_needs_fixup) { const auto undef_pos = undefined_name_to_desc.find(pos.second); - if (undef_pos != undefined_name_to_desc.end()) - { - const uint8_t dylib_ordinal = llvm::MachO::GET_LIBRARY_ORDINAL(undef_pos->second); - if (dylib_ordinal > 0 && dylib_ordinal < dylib_files.GetSize()) - sym[pos.first].SetReExportedSymbolSharedLibrary(dylib_files.GetFileSpecAtIndex(dylib_ordinal-1)); + if (undef_pos != undefined_name_to_desc.end()) { + const uint8_t dylib_ordinal = + llvm::MachO::GET_LIBRARY_ORDINAL(undef_pos->second); + if (dylib_ordinal > 0 && + dylib_ordinal < dylib_files.GetSize()) + sym[pos.first].SetReExportedSymbolSharedLibrary( + dylib_files.GetFileSpecAtIndex(dylib_ordinal - 1)); } + } } + } } + } + } - uint32_t synthetic_sym_id = symtab_load_command.nsyms; + // Must reset this in case it was mutated above! + nlist_data_offset = 0; +#endif - if (function_starts_count > 0) - { - uint32_t num_synthetic_function_symbols = 0; - for (i=0; i<function_starts_count; ++i) - { - if (function_starts.GetEntryRef (i).data == false) - ++num_synthetic_function_symbols; + if (nlist_data.GetByteSize() > 0) { + + // If the sym array was not created while parsing the DSC unmapped + // symbols, create it now. + if (sym == NULL) { + sym = symtab->Resize(symtab_load_command.nsyms + + m_dysymtab.nindirectsyms); + num_syms = symtab->GetNumSymbols(); + } + + if (unmapped_local_symbols_found) { + assert(m_dysymtab.ilocalsym == 0); + nlist_data_offset += (m_dysymtab.nlocalsym * nlist_byte_size); + nlist_idx = m_dysymtab.nlocalsym; + } else { + nlist_idx = 0; + } + + typedef std::map<ConstString, uint16_t> UndefinedNameToDescMap; + typedef std::map<uint32_t, ConstString> SymbolIndexToName; + UndefinedNameToDescMap undefined_name_to_desc; + SymbolIndexToName reexport_shlib_needs_fixup; + for (; nlist_idx < symtab_load_command.nsyms; ++nlist_idx) { + struct nlist_64 nlist; + if (!nlist_data.ValidOffsetForDataOfSize(nlist_data_offset, + nlist_byte_size)) + break; + + nlist.n_strx = nlist_data.GetU32_unchecked(&nlist_data_offset); + nlist.n_type = nlist_data.GetU8_unchecked(&nlist_data_offset); + nlist.n_sect = nlist_data.GetU8_unchecked(&nlist_data_offset); + nlist.n_desc = nlist_data.GetU16_unchecked(&nlist_data_offset); + nlist.n_value = nlist_data.GetAddress_unchecked(&nlist_data_offset); + + SymbolType type = eSymbolTypeInvalid; + const char *symbol_name = NULL; + + if (have_strtab_data) { + symbol_name = strtab_data.PeekCStr(nlist.n_strx); + + if (symbol_name == NULL) { + // No symbol should be NULL, even the symbols with no + // string values should have an offset zero which points + // to an empty C-string + Host::SystemLog(Host::eSystemLogError, + "error: symbol[%u] has invalid string table offset " + "0x%x in %s, ignoring symbol\n", + nlist_idx, nlist.n_strx, + module_sp->GetFileSpec().GetPath().c_str()); + continue; + } + if (symbol_name[0] == '\0') + symbol_name = NULL; + } else { + const addr_t str_addr = strtab_addr + nlist.n_strx; + Error str_error; + if (process->ReadCStringFromMemory(str_addr, memory_symbol_name, + str_error)) + symbol_name = memory_symbol_name.c_str(); + } + const char *symbol_name_non_abi_mangled = NULL; + + SectionSP symbol_section; + lldb::addr_t symbol_byte_size = 0; + bool add_nlist = true; + bool is_gsym = false; + bool is_debug = ((nlist.n_type & N_STAB) != 0); + bool demangled_is_synthesized = false; + bool set_value = true; + assert(sym_idx < num_syms); + + sym[sym_idx].SetDebug(is_debug); + + if (is_debug) { + switch (nlist.n_type) { + case N_GSYM: + // global symbol: name,,NO_SECT,type,0 + // Sometimes the N_GSYM value contains the address. + + // FIXME: In the .o files, we have a GSYM and a debug symbol for all + // the ObjC data. They + // have the same address, but we want to ensure that we always find + // only the real symbol, + // 'cause we don't currently correctly attribute the GSYM one to the + // ObjCClass/Ivar/MetaClass + // symbol type. This is a temporary hack to make sure the + // ObjectiveC symbols get treated + // correctly. To do this right, we should coalesce all the GSYM & + // global symbols that have the + // same address. + is_gsym = true; + sym[sym_idx].SetExternal(true); + + if (symbol_name && symbol_name[0] == '_' && symbol_name[1] == 'O') { + llvm::StringRef symbol_name_ref(symbol_name); + if (symbol_name_ref.startswith(g_objc_v2_prefix_class)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = symbol_name + g_objc_v2_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; + + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_metaclass)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = symbol_name + g_objc_v2_prefix_metaclass.size(); + type = eSymbolTypeObjCMetaClass; + demangled_is_synthesized = true; + } else if (symbol_name_ref.startswith(g_objc_v2_prefix_ivar)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = symbol_name + g_objc_v2_prefix_ivar.size(); + type = eSymbolTypeObjCIVar; + demangled_is_synthesized = true; + } + } else { + if (nlist.n_value != 0) + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + type = eSymbolTypeData; } + break; - if (num_synthetic_function_symbols > 0) - { - if (num_syms < sym_idx + num_synthetic_function_symbols) - { - num_syms = sym_idx + num_synthetic_function_symbols; - sym = symtab->Resize (num_syms); - } - for (i=0; i<function_starts_count; ++i) - { - const FunctionStarts::Entry *func_start_entry = function_starts.GetEntryAtIndex (i); - if (func_start_entry->data == false) - { - addr_t symbol_file_addr = func_start_entry->addr; - uint32_t symbol_flags = 0; - if (is_arm) - { - if (symbol_file_addr & 1) - symbol_flags = MACHO_NLIST_ARM_SYMBOL_IS_THUMB; - symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - } - Address symbol_addr; - if (module_sp->ResolveFileAddress (symbol_file_addr, symbol_addr)) - { - SectionSP symbol_section (symbol_addr.GetSection()); - uint32_t symbol_byte_size = 0; - if (symbol_section) - { - const addr_t section_file_addr = symbol_section->GetFileAddress(); - const FunctionStarts::Entry *next_func_start_entry = function_starts.FindNextEntry (func_start_entry); - const addr_t section_end_file_addr = section_file_addr + symbol_section->GetByteSize(); - if (next_func_start_entry) - { - addr_t next_symbol_file_addr = next_func_start_entry->addr; - if (is_arm) - next_symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; - symbol_byte_size = std::min<lldb::addr_t>(next_symbol_file_addr - symbol_file_addr, section_end_file_addr - symbol_file_addr); - } - else - { - symbol_byte_size = section_end_file_addr - symbol_file_addr; - } - sym[sym_idx].SetID (synthetic_sym_id++); - sym[sym_idx].GetMangled().SetDemangledName(GetNextSyntheticSymbolName()); - sym[sym_idx].SetType (eSymbolTypeCode); - sym[sym_idx].SetIsSynthetic (true); - sym[sym_idx].GetAddressRef() = symbol_addr; - if (symbol_flags) - sym[sym_idx].SetFlags (symbol_flags); - if (symbol_byte_size) - sym[sym_idx].SetByteSize (symbol_byte_size); - ++sym_idx; - } - } - } - } + case N_FNAME: + // procedure name (f77 kludge): name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; + + case N_FUN: + // procedure: name,,n_sect,linenumber,address + if (symbol_name) { + type = eSymbolTypeCode; + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + + N_FUN_addr_to_sym_idx.insert( + std::make_pair(nlist.n_value, sym_idx)); + // We use the current number of symbols in the symbol table in + // lieu of + // using nlist_idx in case we ever start trimming entries out + N_FUN_indexes.push_back(sym_idx); + } else { + type = eSymbolTypeCompiler; + + if (!N_FUN_indexes.empty()) { + // Copy the size of the function into the original STAB entry so + // we don't have + // to hunt for it later + symtab->SymbolAtIndex(N_FUN_indexes.back()) + ->SetByteSize(nlist.n_value); + N_FUN_indexes.pop_back(); + // We don't really need the end function STAB as it contains the + // size which + // we already placed with the original symbol, so don't add it + // if we want a + // minimal symbol table + add_nlist = false; + } } - } + break; - // Trim our symbols down to just what we ended up with after - // removing any symbols. - if (sym_idx < num_syms) - { - num_syms = sym_idx; - sym = symtab->Resize (num_syms); - } + case N_STSYM: + // static symbol: name,,n_sect,type,address + N_STSYM_addr_to_sym_idx.insert( + std::make_pair(nlist.n_value, sym_idx)); + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + if (symbol_name && symbol_name[0]) { + type = ObjectFile::GetSymbolTypeFromName(symbol_name + 1, + eSymbolTypeData); + } + break; - // Now synthesize indirect symbols - if (m_dysymtab.nindirectsyms != 0) - { - if (indirect_symbol_index_data.GetByteSize()) - { - NListIndexToSymbolIndexMap::const_iterator end_index_pos = m_nlist_idx_to_sym_idx.end(); + case N_LCSYM: + // .lcomm symbol: name,,n_sect,type,address + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + type = eSymbolTypeCommonBlock; + break; - for (uint32_t sect_idx = 1; sect_idx < m_mach_sections.size(); ++sect_idx) - { - if ((m_mach_sections[sect_idx].flags & SECTION_TYPE) == S_SYMBOL_STUBS) - { - uint32_t symbol_stub_byte_size = m_mach_sections[sect_idx].reserved2; - if (symbol_stub_byte_size == 0) - continue; - - const uint32_t num_symbol_stubs = m_mach_sections[sect_idx].size / symbol_stub_byte_size; - - if (num_symbol_stubs == 0) - continue; - - const uint32_t symbol_stub_index_offset = m_mach_sections[sect_idx].reserved1; - for (uint32_t stub_idx = 0; stub_idx < num_symbol_stubs; ++stub_idx) - { - const uint32_t symbol_stub_index = symbol_stub_index_offset + stub_idx; - const lldb::addr_t symbol_stub_addr = m_mach_sections[sect_idx].addr + (stub_idx * symbol_stub_byte_size); - lldb::offset_t symbol_stub_offset = symbol_stub_index * 4; - if (indirect_symbol_index_data.ValidOffsetForDataOfSize(symbol_stub_offset, 4)) - { - const uint32_t stub_sym_id = indirect_symbol_index_data.GetU32 (&symbol_stub_offset); - if (stub_sym_id & (INDIRECT_SYMBOL_ABS | INDIRECT_SYMBOL_LOCAL)) - continue; - - NListIndexToSymbolIndexMap::const_iterator index_pos = m_nlist_idx_to_sym_idx.find (stub_sym_id); - Symbol *stub_symbol = NULL; - if (index_pos != end_index_pos) - { - // We have a remapping from the original nlist index to - // a current symbol index, so just look this up by index - stub_symbol = symtab->SymbolAtIndex (index_pos->second); - } - else - { - // We need to lookup a symbol using the original nlist - // symbol index since this index is coming from the - // S_SYMBOL_STUBS - stub_symbol = symtab->FindSymbolByID (stub_sym_id); - } + case N_BNSYM: + // We use the current number of symbols in the symbol table in lieu + // of + // using nlist_idx in case we ever start trimming entries out + // Skip these if we want minimal symbol tables + add_nlist = false; + break; - if (stub_symbol) - { - Address so_addr(symbol_stub_addr, section_list); - - if (stub_symbol->GetType() == eSymbolTypeUndefined) - { - // Change the external symbol into a trampoline that makes sense - // These symbols were N_UNDF N_EXT, and are useless to us, so we - // can re-use them so we don't have to make up a synthetic symbol - // for no good reason. - if (resolver_addresses.find(symbol_stub_addr) == resolver_addresses.end()) - stub_symbol->SetType (eSymbolTypeTrampoline); - else - stub_symbol->SetType (eSymbolTypeResolver); - stub_symbol->SetExternal (false); - stub_symbol->GetAddressRef() = so_addr; - stub_symbol->SetByteSize (symbol_stub_byte_size); - } - else - { - // Make a synthetic symbol to describe the trampoline stub - Mangled stub_symbol_mangled_name(stub_symbol->GetMangled()); - if (sym_idx >= num_syms) - { - sym = symtab->Resize (++num_syms); - stub_symbol = NULL; // this pointer no longer valid - } - sym[sym_idx].SetID (synthetic_sym_id++); - sym[sym_idx].GetMangled() = stub_symbol_mangled_name; - if (resolver_addresses.find(symbol_stub_addr) == resolver_addresses.end()) - sym[sym_idx].SetType (eSymbolTypeTrampoline); - else - sym[sym_idx].SetType (eSymbolTypeResolver); - sym[sym_idx].SetIsSynthetic (true); - sym[sym_idx].GetAddressRef() = so_addr; - sym[sym_idx].SetByteSize (symbol_stub_byte_size); - ++sym_idx; - } - } - else - { - if (log) - log->Warning ("symbol stub referencing symbol table symbol %u that isn't in our minimal symbol table, fix this!!!", stub_sym_id); - } - } - } - } - } - } - } + case N_ENSYM: + // Set the size of the N_BNSYM to the terminating index of this + // N_ENSYM + // so that we can always skip the entire symbol if we need to + // navigate + // more quickly at the source level when parsing STABS + // Skip these if we want minimal symbol tables + add_nlist = false; + break; - if (!trie_entries.empty()) - { - for (const auto &e : trie_entries) - { - if (e.entry.import_name) - { - // Only add indirect symbols from the Trie entries if we - // didn't have a N_INDR nlist entry for this already - if (indirect_symbol_names.find(e.entry.name) == indirect_symbol_names.end()) - { - // Make a synthetic symbol to describe re-exported symbol. - if (sym_idx >= num_syms) - sym = symtab->Resize (++num_syms); - sym[sym_idx].SetID (synthetic_sym_id++); - sym[sym_idx].GetMangled() = Mangled(e.entry.name); - sym[sym_idx].SetType (eSymbolTypeReExported); - sym[sym_idx].SetIsSynthetic (true); - sym[sym_idx].SetReExportedSymbolName(e.entry.import_name); - if (e.entry.other > 0 && e.entry.other <= dylib_files.GetSize()) - { - sym[sym_idx].SetReExportedSymbolSharedLibrary(dylib_files.GetFileSpecAtIndex(e.entry.other-1)); - } - ++sym_idx; + case N_OPT: + // emitted with gcc2_compiled and in gcc source + type = eSymbolTypeCompiler; + break; + + case N_RSYM: + // register sym: name,,NO_SECT,type,register + type = eSymbolTypeVariable; + break; + + case N_SLINE: + // src line: 0,,n_sect,linenumber,address + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + type = eSymbolTypeLineEntry; + break; + + case N_SSYM: + // structure elt: name,,NO_SECT,type,struct_offset + type = eSymbolTypeVariableType; + break; + + case N_SO: + // source file name + type = eSymbolTypeSourceFile; + if (symbol_name == NULL) { + add_nlist = false; + if (N_SO_index != UINT32_MAX) { + // Set the size of the N_SO to the terminating index of this + // N_SO + // so that we can always skip the entire N_SO if we need to + // navigate + // more quickly at the source level when parsing STABS + symbol_ptr = symtab->SymbolAtIndex(N_SO_index); + symbol_ptr->SetByteSize(sym_idx); + symbol_ptr->SetSizeIsSibling(true); + } + N_NSYM_indexes.clear(); + N_INCL_indexes.clear(); + N_BRAC_indexes.clear(); + N_COMM_indexes.clear(); + N_FUN_indexes.clear(); + N_SO_index = UINT32_MAX; + } else { + // We use the current number of symbols in the symbol table in + // lieu of + // using nlist_idx in case we ever start trimming entries out + const bool N_SO_has_full_path = symbol_name[0] == '/'; + if (N_SO_has_full_path) { + if ((N_SO_index == sym_idx - 1) && ((sym_idx - 1) < num_syms)) { + // We have two consecutive N_SO entries where the first + // contains a directory + // and the second contains a full path. + sym[sym_idx - 1].GetMangled().SetValue( + ConstString(symbol_name), false); + m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; + add_nlist = false; + } else { + // This is the first entry in a N_SO that contains a directory + // or + // a full path to the source file + N_SO_index = sym_idx; + } + } else if ((N_SO_index == sym_idx - 1) && + ((sym_idx - 1) < num_syms)) { + // This is usually the second N_SO entry that contains just the + // filename, + // so here we combine it with the first one if we are minimizing + // the symbol table + const char *so_path = + sym[sym_idx - 1] + .GetMangled() + .GetDemangledName(lldb::eLanguageTypeUnknown) + .AsCString(); + if (so_path && so_path[0]) { + std::string full_so_path(so_path); + const size_t double_slash_pos = full_so_path.find("//"); + if (double_slash_pos != std::string::npos) { + // The linker has been generating bad N_SO entries with + // doubled up paths + // in the format "%s%s" where the first string in the + // DW_AT_comp_dir, + // and the second is the directory for the source file so + // you end up with + // a path that looks like "/tmp/src//tmp/src/" + FileSpec so_dir(so_path, false); + if (!so_dir.Exists()) { + so_dir.SetFile(&full_so_path[double_slash_pos + 1], + false); + if (so_dir.Exists()) { + // Trim off the incorrect path + full_so_path.erase(0, double_slash_pos + 1); + } } + } + if (*full_so_path.rbegin() != '/') + full_so_path += '/'; + full_so_path += symbol_name; + sym[sym_idx - 1].GetMangled().SetValue( + ConstString(full_so_path.c_str()), false); + add_nlist = false; + m_nlist_idx_to_sym_idx[nlist_idx] = sym_idx - 1; } + } else { + // This could be a relative path to a N_SO + N_SO_index = sym_idx; + } } - } - -// StreamFile s(stdout, false); -// s.Printf ("Symbol table before CalculateSymbolSizes():\n"); -// symtab->Dump(&s, NULL, eSortOrderNone); - // Set symbol byte sizes correctly since mach-o nlist entries don't have sizes - symtab->CalculateSymbolSizes(); + break; -// s.Printf ("Symbol table after CalculateSymbolSizes():\n"); -// symtab->Dump(&s, NULL, eSortOrderNone); + case N_OSO: + // object file name: name,,0,0,st_mtime + type = eSymbolTypeObjectFile; + break; - return symtab->GetNumSymbols(); - } - return 0; -} + case N_LSYM: + // local sym: name,,NO_SECT,type,offset + type = eSymbolTypeLocal; + break; -void -ObjectFileMachO::Dump (Stream *s) -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - s->Printf("%p: ", static_cast<void*>(this)); - s->Indent(); - if (m_header.magic == MH_MAGIC_64 || m_header.magic == MH_CIGAM_64) - s->PutCString("ObjectFileMachO64"); - else - s->PutCString("ObjectFileMachO32"); + //---------------------------------------------------------------------- + // INCL scopes + //---------------------------------------------------------------------- + case N_BINCL: + // include file beginning: name,,NO_SECT,0,sum + // We use the current number of symbols in the symbol table in lieu + // of + // using nlist_idx in case we ever start trimming entries out + N_INCL_indexes.push_back(sym_idx); + type = eSymbolTypeScopeBegin; + break; - ArchSpec header_arch; - GetArchitecture(header_arch); + case N_EINCL: + // include file end: name,,NO_SECT,0,0 + // Set the size of the N_BINCL to the terminating index of this + // N_EINCL + // so that we can always skip the entire symbol if we need to + // navigate + // more quickly at the source level when parsing STABS + if (!N_INCL_indexes.empty()) { + symbol_ptr = symtab->SymbolAtIndex(N_INCL_indexes.back()); + symbol_ptr->SetByteSize(sym_idx + 1); + symbol_ptr->SetSizeIsSibling(true); + N_INCL_indexes.pop_back(); + } + type = eSymbolTypeScopeEnd; + break; - *s << ", file = '" << m_file << "', arch = " << header_arch.GetArchitectureName() << "\n"; + case N_SOL: + // #included file name: name,,n_sect,0,address + type = eSymbolTypeHeaderFile; - SectionList *sections = GetSectionList(); - if (sections) - sections->Dump(s, NULL, true, UINT32_MAX); + // We currently don't use the header files on darwin + add_nlist = false; + break; - if (m_symtab_ap.get()) - m_symtab_ap->Dump(s, NULL, eSortOrderNone); - } -} + case N_PARAMS: + // compiler parameters: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; -bool -ObjectFileMachO::GetUUID (const llvm::MachO::mach_header &header, - const lldb_private::DataExtractor &data, - lldb::offset_t lc_offset, - lldb_private::UUID& uuid) -{ - uint32_t i; - struct uuid_command load_cmd; + case N_VERSION: + // compiler version: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; + break; - lldb::offset_t offset = lc_offset; - for (i=0; i<header.ncmds; ++i) - { - const lldb::offset_t cmd_offset = offset; - if (data.GetU32(&offset, &load_cmd, 2) == NULL) + case N_OLEVEL: + // compiler -O level: name,,NO_SECT,0,0 + type = eSymbolTypeCompiler; break; - - if (load_cmd.cmd == LC_UUID) - { - const uint8_t *uuid_bytes = data.PeekData(offset, 16); - - if (uuid_bytes) - { - // OpenCL on Mac OS X uses the same UUID for each of its object files. - // We pretend these object files have no UUID to prevent crashing. - - const uint8_t opencl_uuid[] = { 0x8c, 0x8e, 0xb3, 0x9b, - 0x3b, 0xa8, - 0x4b, 0x16, - 0xb6, 0xa4, - 0x27, 0x63, 0xbb, 0x14, 0xf0, 0x0d }; - - if (!memcmp(uuid_bytes, opencl_uuid, 16)) - return false; - - uuid.SetBytes (uuid_bytes); - return true; - } - return false; - } - offset = cmd_offset + load_cmd.cmdsize; - } - return false; -} -bool -ObjectFileMachO::GetArchitecture (const llvm::MachO::mach_header &header, - const lldb_private::DataExtractor &data, - lldb::offset_t lc_offset, - ArchSpec &arch) -{ - arch.SetArchitecture (eArchTypeMachO, header.cputype, header.cpusubtype); - - if (arch.IsValid()) - { - llvm::Triple &triple = arch.GetTriple(); - - // Set OS to an unspecified unknown or a "*" so it can match any OS - triple.setOS(llvm::Triple::UnknownOS); - triple.setOSName(llvm::StringRef()); - - if (header.filetype == MH_PRELOAD) - { - if (header.cputype == CPU_TYPE_ARM) - { - // If this is a 32-bit arm binary, and it's a standalone binary, - // force the Vendor to Apple so we don't accidentally pick up - // the generic armv7 ABI at runtime. Apple's armv7 ABI always uses - // r7 for the frame pointer register; most other armv7 ABIs use a - // combination of r7 and r11. - triple.setVendor(llvm::Triple::Apple); - } - else - { - // Set vendor to an unspecified unknown or a "*" so it can match any vendor - // This is required for correct behavior of EFI debugging on x86_64 - triple.setVendor(llvm::Triple::UnknownVendor); - triple.setVendorName(llvm::StringRef()); + case N_PSYM: + // parameter: name,,NO_SECT,type,offset + type = eSymbolTypeVariable; + break; + + case N_ENTRY: + // alternate entry: name,,n_sect,linenumber,address + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + type = eSymbolTypeLineEntry; + break; + + //---------------------------------------------------------------------- + // Left and Right Braces + //---------------------------------------------------------------------- + case N_LBRAC: + // left bracket: 0,,NO_SECT,nesting level,address + // We use the current number of symbols in the symbol table in lieu + // of + // using nlist_idx in case we ever start trimming entries out + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + N_BRAC_indexes.push_back(sym_idx); + type = eSymbolTypeScopeBegin; + break; + + case N_RBRAC: + // right bracket: 0,,NO_SECT,nesting level,address + // Set the size of the N_LBRAC to the terminating index of this + // N_RBRAC + // so that we can always skip the entire symbol if we need to + // navigate + // more quickly at the source level when parsing STABS + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + if (!N_BRAC_indexes.empty()) { + symbol_ptr = symtab->SymbolAtIndex(N_BRAC_indexes.back()); + symbol_ptr->SetByteSize(sym_idx + 1); + symbol_ptr->SetSizeIsSibling(true); + N_BRAC_indexes.pop_back(); } - return true; - } - else - { - struct load_command load_cmd; + type = eSymbolTypeScopeEnd; + break; - lldb::offset_t offset = lc_offset; - for (uint32_t i=0; i<header.ncmds; ++i) - { - const lldb::offset_t cmd_offset = offset; - if (data.GetU32(&offset, &load_cmd, 2) == NULL) - break; - - switch (load_cmd.cmd) - { - case llvm::MachO::LC_VERSION_MIN_IPHONEOS: - triple.setOS (llvm::Triple::IOS); - return true; - - case llvm::MachO::LC_VERSION_MIN_MACOSX: - triple.setOS (llvm::Triple::MacOSX); - return true; - - case llvm::MachO::LC_VERSION_MIN_TVOS: - triple.setOS (llvm::Triple::TvOS); - return true; - - case llvm::MachO::LC_VERSION_MIN_WATCHOS: - triple.setOS (llvm::Triple::WatchOS); - return true; + case N_EXCL: + // deleted include file: name,,NO_SECT,0,sum + type = eSymbolTypeHeaderFile; + break; - default: - break; - } + //---------------------------------------------------------------------- + // COMM scopes + //---------------------------------------------------------------------- + case N_BCOMM: + // begin common: name,,NO_SECT,0,0 + // We use the current number of symbols in the symbol table in lieu + // of + // using nlist_idx in case we ever start trimming entries out + type = eSymbolTypeScopeBegin; + N_COMM_indexes.push_back(sym_idx); + break; - offset = cmd_offset + load_cmd.cmdsize; + case N_ECOML: + // end common (local name): 0,,n_sect,0,address + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + LLVM_FALLTHROUGH; + + case N_ECOMM: + // end common: name,,n_sect,0,0 + // Set the size of the N_BCOMM to the terminating index of this + // N_ECOMM/N_ECOML + // so that we can always skip the entire symbol if we need to + // navigate + // more quickly at the source level when parsing STABS + if (!N_COMM_indexes.empty()) { + symbol_ptr = symtab->SymbolAtIndex(N_COMM_indexes.back()); + symbol_ptr->SetByteSize(sym_idx + 1); + symbol_ptr->SetSizeIsSibling(true); + N_COMM_indexes.pop_back(); } - - if (header.filetype != MH_KEXT_BUNDLE) - { - // We didn't find a LC_VERSION_MIN load command and this isn't a KEXT - // so lets not say our Vendor is Apple, leave it as an unspecified unknown - triple.setVendor(llvm::Triple::UnknownVendor); - triple.setVendorName(llvm::StringRef()); + type = eSymbolTypeScopeEnd; + break; + + case N_LENG: + // second stab entry with length information + type = eSymbolTypeAdditional; + break; + + default: + break; + } + } else { + // uint8_t n_pext = N_PEXT & nlist.n_type; + uint8_t n_type = N_TYPE & nlist.n_type; + sym[sym_idx].SetExternal((N_EXT & nlist.n_type) != 0); + + switch (n_type) { + case N_INDR: { + const char *reexport_name_cstr = + strtab_data.PeekCStr(nlist.n_value); + if (reexport_name_cstr && reexport_name_cstr[0]) { + type = eSymbolTypeReExported; + ConstString reexport_name( + reexport_name_cstr + + ((reexport_name_cstr[0] == '_') ? 1 : 0)); + sym[sym_idx].SetReExportedSymbolName(reexport_name); + set_value = false; + reexport_shlib_needs_fixup[sym_idx] = reexport_name; + indirect_symbol_names.insert( + ConstString(symbol_name + ((symbol_name[0] == '_') ? 1 : 0))); + } else + type = eSymbolTypeUndefined; + } break; + + case N_UNDF: + if (symbol_name && symbol_name[0]) { + ConstString undefined_name(symbol_name + + ((symbol_name[0] == '_') ? 1 : 0)); + undefined_name_to_desc[undefined_name] = nlist.n_desc; } - } - } - return arch.IsValid(); -} + LLVM_FALLTHROUGH; -bool -ObjectFileMachO::GetUUID (lldb_private::UUID* uuid) -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - return GetUUID (m_header, m_data, offset, *uuid); - } - return false; -} + case N_PBUD: + type = eSymbolTypeUndefined; + break; -uint32_t -ObjectFileMachO::GetDependentModules (FileSpecList& files) -{ - uint32_t count = 0; - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - struct load_command load_cmd; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - std::vector<std::string> rpath_paths; - std::vector<std::string> rpath_relative_paths; - const bool resolve_path = false; // Don't resolve the dependent file paths since they may not reside on this system - uint32_t i; - for (i=0; i<m_header.ncmds; ++i) - { - const uint32_t cmd_offset = offset; - if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) - break; + case N_ABS: + type = eSymbolTypeAbsolute; + break; - switch (load_cmd.cmd) - { - case LC_RPATH: - case LC_LOAD_DYLIB: - case LC_LOAD_WEAK_DYLIB: - case LC_REEXPORT_DYLIB: - case LC_LOAD_DYLINKER: - case LC_LOADFVMLIB: - case LC_LOAD_UPWARD_DYLIB: - { - uint32_t name_offset = cmd_offset + m_data.GetU32(&offset); - const char *path = m_data.PeekCStr(name_offset); - if (path) - { - if (load_cmd.cmd == LC_RPATH) - rpath_paths.push_back(path); - else - { - if (path[0] == '@') - { - if (strncmp(path, "@rpath", strlen("@rpath")) == 0) - rpath_relative_paths.push_back(path + strlen("@rpath")); - } - else - { - FileSpec file_spec(path, resolve_path); - if (files.AppendIfUnique(file_spec)) - count++; - } + case N_SECT: { + symbol_section = + section_info.GetSection(nlist.n_sect, nlist.n_value); + + if (!symbol_section) { + // TODO: warn about this? + add_nlist = false; + break; + } + + if (TEXT_eh_frame_sectID == nlist.n_sect) { + type = eSymbolTypeException; + } else { + uint32_t section_type = symbol_section->Get() & SECTION_TYPE; + + switch (section_type) { + case S_CSTRING_LITERALS: + type = eSymbolTypeData; + break; // section with only literal C strings + case S_4BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 4 byte literals + case S_8BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 8 byte literals + case S_LITERAL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only pointers to literals + case S_NON_LAZY_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only non-lazy symbol pointers + case S_LAZY_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; // section with only lazy symbol pointers + case S_SYMBOL_STUBS: + type = eSymbolTypeTrampoline; + break; // section with only symbol stubs, byte size of stub in + // the reserved2 field + case S_MOD_INIT_FUNC_POINTERS: + type = eSymbolTypeCode; + break; // section with only function pointers for initialization + case S_MOD_TERM_FUNC_POINTERS: + type = eSymbolTypeCode; + break; // section with only function pointers for termination + case S_INTERPOSING: + type = eSymbolTypeTrampoline; + break; // section with only pairs of function pointers for + // interposing + case S_16BYTE_LITERALS: + type = eSymbolTypeData; + break; // section with only 16 byte literals + case S_DTRACE_DOF: + type = eSymbolTypeInstrumentation; + break; + case S_LAZY_DYLIB_SYMBOL_POINTERS: + type = eSymbolTypeTrampoline; + break; + default: + switch (symbol_section->GetType()) { + case lldb::eSectionTypeCode: + type = eSymbolTypeCode; + break; + case eSectionTypeData: + case eSectionTypeDataCString: // Inlined C string data + case eSectionTypeDataCStringPointers: // Pointers to C string + // data + case eSectionTypeDataSymbolAddress: // Address of a symbol in + // the symbol table + case eSectionTypeData4: + case eSectionTypeData8: + case eSectionTypeData16: + type = eSymbolTypeData; + break; + default: + break; + } + break; + } + + if (type == eSymbolTypeInvalid) { + const char *symbol_sect_name = + symbol_section->GetName().AsCString(); + if (symbol_section->IsDescendant(text_section_sp.get())) { + if (symbol_section->IsClear(S_ATTR_PURE_INSTRUCTIONS | + S_ATTR_SELF_MODIFYING_CODE | + S_ATTR_SOME_INSTRUCTIONS)) + type = eSymbolTypeData; + else + type = eSymbolTypeCode; + } else if (symbol_section->IsDescendant( + data_section_sp.get()) || + symbol_section->IsDescendant( + data_dirty_section_sp.get()) || + symbol_section->IsDescendant( + data_const_section_sp.get())) { + if (symbol_sect_name && + ::strstr(symbol_sect_name, "__objc") == + symbol_sect_name) { + type = eSymbolTypeRuntime; + + if (symbol_name) { + llvm::StringRef symbol_name_ref(symbol_name); + if (symbol_name_ref.startswith("_OBJC_")) { + static const llvm::StringRef g_objc_v2_prefix_class( + "_OBJC_CLASS_$_"); + static const llvm::StringRef g_objc_v2_prefix_metaclass( + "_OBJC_METACLASS_$_"); + static const llvm::StringRef g_objc_v2_prefix_ivar( + "_OBJC_IVAR_$_"); + if (symbol_name_ref.startswith( + g_objc_v2_prefix_class)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = + symbol_name + g_objc_v2_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_metaclass)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = + symbol_name + g_objc_v2_prefix_metaclass.size(); + type = eSymbolTypeObjCMetaClass; + demangled_is_synthesized = true; + } else if (symbol_name_ref.startswith( + g_objc_v2_prefix_ivar)) { + symbol_name_non_abi_mangled = symbol_name + 1; + symbol_name = + symbol_name + g_objc_v2_prefix_ivar.size(); + type = eSymbolTypeObjCIVar; + demangled_is_synthesized = true; } + } + } + } else if (symbol_sect_name && + ::strstr(symbol_sect_name, "__gcc_except_tab") == + symbol_sect_name) { + type = eSymbolTypeException; + } else { + type = eSymbolTypeData; + } + } else if (symbol_sect_name && + ::strstr(symbol_sect_name, "__IMPORT") == + symbol_sect_name) { + type = eSymbolTypeTrampoline; + } else if (symbol_section->IsDescendant( + objc_section_sp.get())) { + type = eSymbolTypeRuntime; + if (symbol_name && symbol_name[0] == '.') { + llvm::StringRef symbol_name_ref(symbol_name); + static const llvm::StringRef g_objc_v1_prefix_class( + ".objc_class_name_"); + if (symbol_name_ref.startswith(g_objc_v1_prefix_class)) { + symbol_name_non_abi_mangled = symbol_name; + symbol_name = symbol_name + g_objc_v1_prefix_class.size(); + type = eSymbolTypeObjCClass; + demangled_is_synthesized = true; } + } } - break; - - default: - break; + } } - offset = cmd_offset + load_cmd.cmdsize; + } break; + } } - if (!rpath_paths.empty()) - { - // Fixup all LC_RPATH values to be absolute paths - FileSpec this_file_spec(m_file); - this_file_spec.ResolvePath(); - std::string loader_path("@loader_path"); - std::string executable_path("@executable_path"); - for (auto &rpath : rpath_paths) - { - if (rpath.find(loader_path) == 0) - { - rpath.erase(0, loader_path.size()); - rpath.insert(0, this_file_spec.GetDirectory().GetCString()); + if (add_nlist) { + uint64_t symbol_value = nlist.n_value; + + if (symbol_name_non_abi_mangled) { + sym[sym_idx].GetMangled().SetMangledName( + ConstString(symbol_name_non_abi_mangled)); + sym[sym_idx].GetMangled().SetDemangledName( + ConstString(symbol_name)); + } else { + bool symbol_name_is_mangled = false; + + if (symbol_name && symbol_name[0] == '_') { + symbol_name_is_mangled = symbol_name[1] == '_'; + symbol_name++; // Skip the leading underscore + } + + if (symbol_name) { + ConstString const_symbol_name(symbol_name); + sym[sym_idx].GetMangled().SetValue(const_symbol_name, + symbol_name_is_mangled); + } + } + + if (is_gsym) { + const char *gsym_name = sym[sym_idx] + .GetMangled() + .GetName(lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) + .GetCString(); + if (gsym_name) + N_GSYM_name_to_sym_idx[gsym_name] = sym_idx; + } + + if (symbol_section) { + const addr_t section_file_addr = symbol_section->GetFileAddress(); + if (symbol_byte_size == 0 && function_starts_count > 0) { + addr_t symbol_lookup_file_addr = nlist.n_value; + // Do an exact address match for non-ARM addresses, else get the + // closest since + // the symbol might be a thumb symbol which has an address with + // bit zero set + FunctionStarts::Entry *func_start_entry = + function_starts.FindEntry(symbol_lookup_file_addr, !is_arm); + if (is_arm && func_start_entry) { + // Verify that the function start address is the symbol address + // (ARM) + // or the symbol address + 1 (thumb) + if (func_start_entry->addr != symbol_lookup_file_addr && + func_start_entry->addr != (symbol_lookup_file_addr + 1)) { + // Not the right entry, NULL it out... + func_start_entry = NULL; } - else if (rpath.find(executable_path) == 0) - { - rpath.erase(0, executable_path.size()); - rpath.insert(0, this_file_spec.GetDirectory().GetCString()); + } + if (func_start_entry) { + func_start_entry->data = true; + + addr_t symbol_file_addr = func_start_entry->addr; + if (is_arm) + symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; + + const FunctionStarts::Entry *next_func_start_entry = + function_starts.FindNextEntry(func_start_entry); + const addr_t section_end_file_addr = + section_file_addr + symbol_section->GetByteSize(); + if (next_func_start_entry) { + addr_t next_symbol_file_addr = next_func_start_entry->addr; + // Be sure the clear the Thumb address bit when we calculate + // the size + // from the current and next address + if (is_arm) + next_symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; + symbol_byte_size = std::min<lldb::addr_t>( + next_symbol_file_addr - symbol_file_addr, + section_end_file_addr - symbol_file_addr); + } else { + symbol_byte_size = section_end_file_addr - symbol_file_addr; } + } } - - for (const auto &rpath_relative_path : rpath_relative_paths) - { - for (const auto &rpath : rpath_paths) - { - std::string path = rpath; - path += rpath_relative_path; - // It is OK to resolve this path because we must find a file on - // disk for us to accept it anyway if it is rpath relative. - FileSpec file_spec(path, true); - // Remove any redundant parts of the path (like "../foo") since - // LC_RPATH values often contain "..". - file_spec.NormalizePath (); - if (file_spec.Exists() && files.AppendIfUnique(file_spec)) - { - count++; - break; - } + symbol_value -= section_file_addr; + } + + if (is_debug == false) { + if (type == eSymbolTypeCode) { + // See if we can find a N_FUN entry for any code symbols. + // If we do find a match, and the name matches, then we + // can merge the two into just the function symbol to avoid + // duplicate entries in the symbol table + std::pair<ValueToSymbolIndexMap::const_iterator, + ValueToSymbolIndexMap::const_iterator> + range; + range = N_FUN_addr_to_sym_idx.equal_range(nlist.n_value); + if (range.first != range.second) { + bool found_it = false; + for (ValueToSymbolIndexMap::const_iterator pos = range.first; + pos != range.second; ++pos) { + if (sym[sym_idx].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) == + sym[pos->second].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled)) { + m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; + // We just need the flags from the linker symbol, so put + // these flags + // into the N_FUN flags to avoid duplicate symbols in the + // symbol table + sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); + sym[pos->second].SetFlags(nlist.n_type << 16 | + nlist.n_desc); + if (resolver_addresses.find(nlist.n_value) != + resolver_addresses.end()) + sym[pos->second].SetType(eSymbolTypeResolver); + sym[sym_idx].Clear(); + found_it = true; + break; + } + } + if (found_it) + continue; + } else { + if (resolver_addresses.find(nlist.n_value) != + resolver_addresses.end()) + type = eSymbolTypeResolver; + } + } else if (type == eSymbolTypeData || + type == eSymbolTypeObjCClass || + type == eSymbolTypeObjCMetaClass || + type == eSymbolTypeObjCIVar) { + // See if we can find a N_STSYM entry for any data symbols. + // If we do find a match, and the name matches, then we + // can merge the two into just the Static symbol to avoid + // duplicate entries in the symbol table + std::pair<ValueToSymbolIndexMap::const_iterator, + ValueToSymbolIndexMap::const_iterator> + range; + range = N_STSYM_addr_to_sym_idx.equal_range(nlist.n_value); + if (range.first != range.second) { + bool found_it = false; + for (ValueToSymbolIndexMap::const_iterator pos = range.first; + pos != range.second; ++pos) { + if (sym[sym_idx].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) == + sym[pos->second].GetMangled().GetName( + lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled)) { + m_nlist_idx_to_sym_idx[nlist_idx] = pos->second; + // We just need the flags from the linker symbol, so put + // these flags + // into the N_STSYM flags to avoid duplicate symbols in the + // symbol table + sym[pos->second].SetExternal(sym[sym_idx].IsExternal()); + sym[pos->second].SetFlags(nlist.n_type << 16 | + nlist.n_desc); + sym[sym_idx].Clear(); + found_it = true; + break; + } + } + if (found_it) + continue; + } else { + // Combine N_GSYM stab entries with the non stab symbol + const char *gsym_name = sym[sym_idx] + .GetMangled() + .GetName(lldb::eLanguageTypeUnknown, + Mangled::ePreferMangled) + .GetCString(); + if (gsym_name) { + ConstNameToSymbolIndexMap::const_iterator pos = + N_GSYM_name_to_sym_idx.find(gsym_name); + if (pos != N_GSYM_name_to_sym_idx.end()) { + const uint32_t GSYM_sym_idx = pos->second; + m_nlist_idx_to_sym_idx[nlist_idx] = GSYM_sym_idx; + // Copy the address, because often the N_GSYM address has an + // invalid address of zero + // when the global is a common symbol + sym[GSYM_sym_idx].GetAddressRef().SetSection( + symbol_section); + sym[GSYM_sym_idx].GetAddressRef().SetOffset(symbol_value); + // We just need the flags from the linker symbol, so put + // these flags + // into the N_GSYM flags to avoid duplicate symbols in the + // symbol table + sym[GSYM_sym_idx].SetFlags(nlist.n_type << 16 | + nlist.n_desc); + sym[sym_idx].Clear(); + continue; + } } + } } - } - } - return count; -} + } -lldb_private::Address -ObjectFileMachO::GetEntryPointAddress () -{ - // If the object file is not an executable it can't hold the entry point. m_entry_point_address - // is initialized to an invalid address, so we can just return that. - // If m_entry_point_address is valid it means we've found it already, so return the cached value. + sym[sym_idx].SetID(nlist_idx); + sym[sym_idx].SetType(type); + if (set_value) { + sym[sym_idx].GetAddressRef().SetSection(symbol_section); + sym[sym_idx].GetAddressRef().SetOffset(symbol_value); + } + sym[sym_idx].SetFlags(nlist.n_type << 16 | nlist.n_desc); - if (!IsExecutable() || m_entry_point_address.IsValid()) - return m_entry_point_address; + if (symbol_byte_size > 0) + sym[sym_idx].SetByteSize(symbol_byte_size); - // Otherwise, look for the UnixThread or Thread command. The data for the Thread command is given in - // /usr/include/mach-o.h, but it is basically: - // - // uint32_t flavor - this is the flavor argument you would pass to thread_get_state - // uint32_t count - this is the count of longs in the thread state data - // struct XXX_thread_state state - this is the structure from <machine/thread_status.h> corresponding to the flavor. - // <repeat this trio> - // - // So we just keep reading the various register flavors till we find the GPR one, then read the PC out of there. - // FIXME: We will need to have a "RegisterContext data provider" class at some point that can get all the registers - // out of data in this form & attach them to a given thread. That should underlie the MacOS X User process plugin, - // and we'll also need it for the MacOS X Core File process plugin. When we have that we can also use it here. - // - // For now we hard-code the offsets and flavors we need: - // - // + if (demangled_is_synthesized) + sym[sym_idx].SetDemangledNameIsSynthesized(true); - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - struct load_command load_cmd; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - uint32_t i; - lldb::addr_t start_address = LLDB_INVALID_ADDRESS; - bool done = false; + ++sym_idx; + } else { + sym[sym_idx].Clear(); + } + } + + for (const auto &pos : reexport_shlib_needs_fixup) { + const auto undef_pos = undefined_name_to_desc.find(pos.second); + if (undef_pos != undefined_name_to_desc.end()) { + const uint8_t dylib_ordinal = + llvm::MachO::GET_LIBRARY_ORDINAL(undef_pos->second); + if (dylib_ordinal > 0 && dylib_ordinal < dylib_files.GetSize()) + sym[pos.first].SetReExportedSymbolSharedLibrary( + dylib_files.GetFileSpecAtIndex(dylib_ordinal - 1)); + } + } + } - for (i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t cmd_offset = offset; - if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) - break; + uint32_t synthetic_sym_id = symtab_load_command.nsyms; - switch (load_cmd.cmd) - { - case LC_UNIXTHREAD: - case LC_THREAD: - { - while (offset < cmd_offset + load_cmd.cmdsize) - { - uint32_t flavor = m_data.GetU32(&offset); - uint32_t count = m_data.GetU32(&offset); - if (count == 0) - { - // We've gotten off somehow, log and exit; - return m_entry_point_address; - } + if (function_starts_count > 0) { + uint32_t num_synthetic_function_symbols = 0; + for (i = 0; i < function_starts_count; ++i) { + if (function_starts.GetEntryRef(i).data == false) + ++num_synthetic_function_symbols; + } - switch (m_header.cputype) - { - case llvm::MachO::CPU_TYPE_ARM: - if (flavor == 1 || flavor == 9) // ARM_THREAD_STATE/ARM_THREAD_STATE32 from mach/arm/thread_status.h - { - offset += 60; // This is the offset of pc in the GPR thread state data structure. - start_address = m_data.GetU32(&offset); - done = true; - } - break; - case llvm::MachO::CPU_TYPE_ARM64: - if (flavor == 6) // ARM_THREAD_STATE64 from mach/arm/thread_status.h - { - offset += 256; // This is the offset of pc in the GPR thread state data structure. - start_address = m_data.GetU64(&offset); - done = true; - } - break; - case llvm::MachO::CPU_TYPE_I386: - if (flavor == 1) // x86_THREAD_STATE32 from mach/i386/thread_status.h - { - offset += 40; // This is the offset of eip in the GPR thread state data structure. - start_address = m_data.GetU32(&offset); - done = true; - } - break; - case llvm::MachO::CPU_TYPE_X86_64: - if (flavor == 4) // x86_THREAD_STATE64 from mach/i386/thread_status.h - { - offset += 16 * 8; // This is the offset of rip in the GPR thread state data structure. - start_address = m_data.GetU64(&offset); - done = true; - } - break; - default: - return m_entry_point_address; - } - // Haven't found the GPR flavor yet, skip over the data for this flavor: - if (done) - break; - offset += count * 4; - } - } - break; - case LC_MAIN: - { - ConstString text_segment_name ("__TEXT"); - uint64_t entryoffset = m_data.GetU64(&offset); - SectionSP text_segment_sp = GetSectionList()->FindSectionByName(text_segment_name); - if (text_segment_sp) - { - done = true; - start_address = text_segment_sp->GetFileAddress() + entryoffset; - } + if (num_synthetic_function_symbols > 0) { + if (num_syms < sym_idx + num_synthetic_function_symbols) { + num_syms = sym_idx + num_synthetic_function_symbols; + sym = symtab->Resize(num_syms); + } + for (i = 0; i < function_starts_count; ++i) { + const FunctionStarts::Entry *func_start_entry = + function_starts.GetEntryAtIndex(i); + if (func_start_entry->data == false) { + addr_t symbol_file_addr = func_start_entry->addr; + uint32_t symbol_flags = 0; + if (is_arm) { + if (symbol_file_addr & 1) + symbol_flags = MACHO_NLIST_ARM_SYMBOL_IS_THUMB; + symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; + } + Address symbol_addr; + if (module_sp->ResolveFileAddress(symbol_file_addr, symbol_addr)) { + SectionSP symbol_section(symbol_addr.GetSection()); + uint32_t symbol_byte_size = 0; + if (symbol_section) { + const addr_t section_file_addr = + symbol_section->GetFileAddress(); + const FunctionStarts::Entry *next_func_start_entry = + function_starts.FindNextEntry(func_start_entry); + const addr_t section_end_file_addr = + section_file_addr + symbol_section->GetByteSize(); + if (next_func_start_entry) { + addr_t next_symbol_file_addr = next_func_start_entry->addr; + if (is_arm) + next_symbol_file_addr &= THUMB_ADDRESS_BIT_MASK; + symbol_byte_size = std::min<lldb::addr_t>( + next_symbol_file_addr - symbol_file_addr, + section_end_file_addr - symbol_file_addr); + } else { + symbol_byte_size = section_end_file_addr - symbol_file_addr; } - break; - - default: - break; + sym[sym_idx].SetID(synthetic_sym_id++); + sym[sym_idx].GetMangled().SetDemangledName( + GetNextSyntheticSymbolName()); + sym[sym_idx].SetType(eSymbolTypeCode); + sym[sym_idx].SetIsSynthetic(true); + sym[sym_idx].GetAddressRef() = symbol_addr; + if (symbol_flags) + sym[sym_idx].SetFlags(symbol_flags); + if (symbol_byte_size) + sym[sym_idx].SetByteSize(symbol_byte_size); + ++sym_idx; + } } - if (done) - break; - - // Go to the next load command: - offset = cmd_offset + load_cmd.cmdsize; + } } + } + } - if (start_address != LLDB_INVALID_ADDRESS) - { - // We got the start address from the load commands, so now resolve that address in the sections - // of this ObjectFile: - if (!m_entry_point_address.ResolveAddressUsingFileSections (start_address, GetSectionList())) - { - m_entry_point_address.Clear(); - } - } - else - { - // We couldn't read the UnixThread load command - maybe it wasn't there. As a fallback look for the - // "start" symbol in the main executable. + // Trim our symbols down to just what we ended up with after + // removing any symbols. + if (sym_idx < num_syms) { + num_syms = sym_idx; + sym = symtab->Resize(num_syms); + } - ModuleSP module_sp (GetModule()); + // Now synthesize indirect symbols + if (m_dysymtab.nindirectsyms != 0) { + if (indirect_symbol_index_data.GetByteSize()) { + NListIndexToSymbolIndexMap::const_iterator end_index_pos = + m_nlist_idx_to_sym_idx.end(); + + for (uint32_t sect_idx = 1; sect_idx < m_mach_sections.size(); + ++sect_idx) { + if ((m_mach_sections[sect_idx].flags & SECTION_TYPE) == + S_SYMBOL_STUBS) { + uint32_t symbol_stub_byte_size = + m_mach_sections[sect_idx].reserved2; + if (symbol_stub_byte_size == 0) + continue; + + const uint32_t num_symbol_stubs = + m_mach_sections[sect_idx].size / symbol_stub_byte_size; + + if (num_symbol_stubs == 0) + continue; + + const uint32_t symbol_stub_index_offset = + m_mach_sections[sect_idx].reserved1; + for (uint32_t stub_idx = 0; stub_idx < num_symbol_stubs; + ++stub_idx) { + const uint32_t symbol_stub_index = + symbol_stub_index_offset + stub_idx; + const lldb::addr_t symbol_stub_addr = + m_mach_sections[sect_idx].addr + + (stub_idx * symbol_stub_byte_size); + lldb::offset_t symbol_stub_offset = symbol_stub_index * 4; + if (indirect_symbol_index_data.ValidOffsetForDataOfSize( + symbol_stub_offset, 4)) { + const uint32_t stub_sym_id = + indirect_symbol_index_data.GetU32(&symbol_stub_offset); + if (stub_sym_id & (INDIRECT_SYMBOL_ABS | INDIRECT_SYMBOL_LOCAL)) + continue; + + NListIndexToSymbolIndexMap::const_iterator index_pos = + m_nlist_idx_to_sym_idx.find(stub_sym_id); + Symbol *stub_symbol = NULL; + if (index_pos != end_index_pos) { + // We have a remapping from the original nlist index to + // a current symbol index, so just look this up by index + stub_symbol = symtab->SymbolAtIndex(index_pos->second); + } else { + // We need to lookup a symbol using the original nlist + // symbol index since this index is coming from the + // S_SYMBOL_STUBS + stub_symbol = symtab->FindSymbolByID(stub_sym_id); + } - if (module_sp) - { - SymbolContextList contexts; - SymbolContext context; - if (module_sp->FindSymbolsWithNameAndType(ConstString ("start"), eSymbolTypeCode, contexts)) - { - if (contexts.GetContextAtIndex(0, context)) - m_entry_point_address = context.symbol->GetAddress(); + if (stub_symbol) { + Address so_addr(symbol_stub_addr, section_list); + + if (stub_symbol->GetType() == eSymbolTypeUndefined) { + // Change the external symbol into a trampoline that makes + // sense + // These symbols were N_UNDF N_EXT, and are useless to us, + // so we + // can re-use them so we don't have to make up a synthetic + // symbol + // for no good reason. + if (resolver_addresses.find(symbol_stub_addr) == + resolver_addresses.end()) + stub_symbol->SetType(eSymbolTypeTrampoline); + else + stub_symbol->SetType(eSymbolTypeResolver); + stub_symbol->SetExternal(false); + stub_symbol->GetAddressRef() = so_addr; + stub_symbol->SetByteSize(symbol_stub_byte_size); + } else { + // Make a synthetic symbol to describe the trampoline stub + Mangled stub_symbol_mangled_name(stub_symbol->GetMangled()); + if (sym_idx >= num_syms) { + sym = symtab->Resize(++num_syms); + stub_symbol = NULL; // this pointer no longer valid + } + sym[sym_idx].SetID(synthetic_sym_id++); + sym[sym_idx].GetMangled() = stub_symbol_mangled_name; + if (resolver_addresses.find(symbol_stub_addr) == + resolver_addresses.end()) + sym[sym_idx].SetType(eSymbolTypeTrampoline); + else + sym[sym_idx].SetType(eSymbolTypeResolver); + sym[sym_idx].SetIsSynthetic(true); + sym[sym_idx].GetAddressRef() = so_addr; + sym[sym_idx].SetByteSize(symbol_stub_byte_size); + ++sym_idx; + } + } else { + if (log) + log->Warning("symbol stub referencing symbol table symbol " + "%u that isn't in our minimal symbol table, " + "fix this!!!", + stub_sym_id); } + } } + } } + } } - return m_entry_point_address; -} - -lldb_private::Address -ObjectFileMachO::GetHeaderAddress () -{ - lldb_private::Address header_addr; - SectionList *section_list = GetSectionList(); - if (section_list) - { - SectionSP text_segment_sp (section_list->FindSectionByName (GetSegmentNameTEXT())); - if (text_segment_sp) - { - header_addr.SetSection (text_segment_sp); - header_addr.SetOffset (0); + if (!trie_entries.empty()) { + for (const auto &e : trie_entries) { + if (e.entry.import_name) { + // Only add indirect symbols from the Trie entries if we + // didn't have a N_INDR nlist entry for this already + if (indirect_symbol_names.find(e.entry.name) == + indirect_symbol_names.end()) { + // Make a synthetic symbol to describe re-exported symbol. + if (sym_idx >= num_syms) + sym = symtab->Resize(++num_syms); + sym[sym_idx].SetID(synthetic_sym_id++); + sym[sym_idx].GetMangled() = Mangled(e.entry.name); + sym[sym_idx].SetType(eSymbolTypeReExported); + sym[sym_idx].SetIsSynthetic(true); + sym[sym_idx].SetReExportedSymbolName(e.entry.import_name); + if (e.entry.other > 0 && e.entry.other <= dylib_files.GetSize()) { + sym[sym_idx].SetReExportedSymbolSharedLibrary( + dylib_files.GetFileSpecAtIndex(e.entry.other - 1)); + } + ++sym_idx; + } } + } } - return header_addr; + + // StreamFile s(stdout, false); + // s.Printf ("Symbol table before CalculateSymbolSizes():\n"); + // symtab->Dump(&s, NULL, eSortOrderNone); + // Set symbol byte sizes correctly since mach-o nlist entries don't have + // sizes + symtab->CalculateSymbolSizes(); + + // s.Printf ("Symbol table after CalculateSymbolSizes():\n"); + // symtab->Dump(&s, NULL, eSortOrderNone); + + return symtab->GetNumSymbols(); + } + return 0; } -uint32_t -ObjectFileMachO::GetNumThreadContexts () -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - if (!m_thread_context_offsets_valid) - { - m_thread_context_offsets_valid = true; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - FileRangeArray::Entry file_range; - thread_command thread_cmd; - for (uint32_t i=0; i<m_header.ncmds; ++i) - { - const uint32_t cmd_offset = offset; - if (m_data.GetU32(&offset, &thread_cmd, 2) == NULL) - break; +void ObjectFileMachO::Dump(Stream *s) { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + s->Printf("%p: ", static_cast<void *>(this)); + s->Indent(); + if (m_header.magic == MH_MAGIC_64 || m_header.magic == MH_CIGAM_64) + s->PutCString("ObjectFileMachO64"); + else + s->PutCString("ObjectFileMachO32"); - if (thread_cmd.cmd == LC_THREAD) - { - file_range.SetRangeBase (offset); - file_range.SetByteSize (thread_cmd.cmdsize - 8); - m_thread_context_offsets.Append (file_range); - } - offset = cmd_offset + thread_cmd.cmdsize; - } - } - } - return m_thread_context_offsets.GetSize(); + ArchSpec header_arch; + GetArchitecture(header_arch); + + *s << ", file = '" << m_file + << "', arch = " << header_arch.GetArchitectureName() << "\n"; + + SectionList *sections = GetSectionList(); + if (sections) + sections->Dump(s, NULL, true, UINT32_MAX); + + if (m_symtab_ap.get()) + m_symtab_ap->Dump(s, NULL, eSortOrderNone); + } } -lldb::RegisterContextSP -ObjectFileMachO::GetThreadContextAtIndex (uint32_t idx, lldb_private::Thread &thread) -{ - lldb::RegisterContextSP reg_ctx_sp; +bool ObjectFileMachO::GetUUID(const llvm::MachO::mach_header &header, + const lldb_private::DataExtractor &data, + lldb::offset_t lc_offset, + lldb_private::UUID &uuid) { + uint32_t i; + struct uuid_command load_cmd; - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - if (!m_thread_context_offsets_valid) - GetNumThreadContexts (); + lldb::offset_t offset = lc_offset; + for (i = 0; i < header.ncmds; ++i) { + const lldb::offset_t cmd_offset = offset; + if (data.GetU32(&offset, &load_cmd, 2) == NULL) + break; - const FileRangeArray::Entry *thread_context_file_range = m_thread_context_offsets.GetEntryAtIndex (idx); - if (thread_context_file_range) - { + if (load_cmd.cmd == LC_UUID) { + const uint8_t *uuid_bytes = data.PeekData(offset, 16); - DataExtractor data (m_data, - thread_context_file_range->GetRangeBase(), - thread_context_file_range->GetByteSize()); + if (uuid_bytes) { + // OpenCL on Mac OS X uses the same UUID for each of its object files. + // We pretend these object files have no UUID to prevent crashing. - switch (m_header.cputype) - { - case llvm::MachO::CPU_TYPE_ARM64: - reg_ctx_sp.reset (new RegisterContextDarwin_arm64_Mach (thread, data)); - break; - - case llvm::MachO::CPU_TYPE_ARM: - reg_ctx_sp.reset (new RegisterContextDarwin_arm_Mach (thread, data)); - break; + const uint8_t opencl_uuid[] = {0x8c, 0x8e, 0xb3, 0x9b, 0x3b, 0xa8, + 0x4b, 0x16, 0xb6, 0xa4, 0x27, 0x63, + 0xbb, 0x14, 0xf0, 0x0d}; - case llvm::MachO::CPU_TYPE_I386: - reg_ctx_sp.reset (new RegisterContextDarwin_i386_Mach (thread, data)); - break; + if (!memcmp(uuid_bytes, opencl_uuid, 16)) + return false; - case llvm::MachO::CPU_TYPE_X86_64: - reg_ctx_sp.reset (new RegisterContextDarwin_x86_64_Mach (thread, data)); - break; - } + uuid.SetBytes(uuid_bytes); + return true; + } + return false; + } + offset = cmd_offset + load_cmd.cmdsize; + } + return false; +} + +bool ObjectFileMachO::GetArchitecture(const llvm::MachO::mach_header &header, + const lldb_private::DataExtractor &data, + lldb::offset_t lc_offset, + ArchSpec &arch) { + arch.SetArchitecture(eArchTypeMachO, header.cputype, header.cpusubtype); + + if (arch.IsValid()) { + llvm::Triple &triple = arch.GetTriple(); + + // Set OS to an unspecified unknown or a "*" so it can match any OS + triple.setOS(llvm::Triple::UnknownOS); + triple.setOSName(llvm::StringRef()); + + if (header.filetype == MH_PRELOAD) { + if (header.cputype == CPU_TYPE_ARM) { + // If this is a 32-bit arm binary, and it's a standalone binary, + // force the Vendor to Apple so we don't accidentally pick up + // the generic armv7 ABI at runtime. Apple's armv7 ABI always uses + // r7 for the frame pointer register; most other armv7 ABIs use a + // combination of r7 and r11. + triple.setVendor(llvm::Triple::Apple); + } else { + // Set vendor to an unspecified unknown or a "*" so it can match any + // vendor + // This is required for correct behavior of EFI debugging on x86_64 + triple.setVendor(llvm::Triple::UnknownVendor); + triple.setVendorName(llvm::StringRef()); + } + return true; + } else { + struct load_command load_cmd; + + lldb::offset_t offset = lc_offset; + for (uint32_t i = 0; i < header.ncmds; ++i) { + const lldb::offset_t cmd_offset = offset; + if (data.GetU32(&offset, &load_cmd, 2) == NULL) + break; + + switch (load_cmd.cmd) { + case llvm::MachO::LC_VERSION_MIN_IPHONEOS: + triple.setOS(llvm::Triple::IOS); + return true; + + case llvm::MachO::LC_VERSION_MIN_MACOSX: + triple.setOS(llvm::Triple::MacOSX); + return true; + + case llvm::MachO::LC_VERSION_MIN_TVOS: + triple.setOS(llvm::Triple::TvOS); + return true; + + case llvm::MachO::LC_VERSION_MIN_WATCHOS: + triple.setOS(llvm::Triple::WatchOS); + return true; + + default: + break; } + + offset = cmd_offset + load_cmd.cmdsize; + } + + if (header.filetype != MH_KEXT_BUNDLE) { + // We didn't find a LC_VERSION_MIN load command and this isn't a KEXT + // so lets not say our Vendor is Apple, leave it as an unspecified + // unknown + triple.setVendor(llvm::Triple::UnknownVendor); + triple.setVendorName(llvm::StringRef()); + } } - return reg_ctx_sp; + } + return arch.IsValid(); } -ObjectFile::Type -ObjectFileMachO::CalculateType() -{ - switch (m_header.filetype) - { - case MH_OBJECT: // 0x1u - if (GetAddressByteSize () == 4) - { - // 32 bit kexts are just object files, but they do have a valid - // UUID load command. - UUID uuid; - if (GetUUID(&uuid)) - { - // this checking for the UUID load command is not enough - // we could eventually look for the symbol named - // "OSKextGetCurrentIdentifier" as this is required of kexts - if (m_strata == eStrataInvalid) - m_strata = eStrataKernel; - return eTypeSharedLibrary; - } +bool ObjectFileMachO::GetUUID(lldb_private::UUID *uuid) { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + return GetUUID(m_header, m_data, offset, *uuid); + } + return false; +} + +uint32_t ObjectFileMachO::GetDependentModules(FileSpecList &files) { + uint32_t count = 0; + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + struct load_command load_cmd; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + std::vector<std::string> rpath_paths; + std::vector<std::string> rpath_relative_paths; + const bool resolve_path = false; // Don't resolve the dependent file paths + // since they may not reside on this system + uint32_t i; + for (i = 0; i < m_header.ncmds; ++i) { + const uint32_t cmd_offset = offset; + if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) + break; + + switch (load_cmd.cmd) { + case LC_RPATH: + case LC_LOAD_DYLIB: + case LC_LOAD_WEAK_DYLIB: + case LC_REEXPORT_DYLIB: + case LC_LOAD_DYLINKER: + case LC_LOADFVMLIB: + case LC_LOAD_UPWARD_DYLIB: { + uint32_t name_offset = cmd_offset + m_data.GetU32(&offset); + const char *path = m_data.PeekCStr(name_offset); + if (path) { + if (load_cmd.cmd == LC_RPATH) + rpath_paths.push_back(path); + else { + if (path[0] == '@') { + if (strncmp(path, "@rpath", strlen("@rpath")) == 0) + rpath_relative_paths.push_back(path + strlen("@rpath")); + } else { + FileSpec file_spec(path, resolve_path); + if (files.AppendIfUnique(file_spec)) + count++; } - return eTypeObjectFile; - - case MH_EXECUTE: return eTypeExecutable; // 0x2u - case MH_FVMLIB: return eTypeSharedLibrary; // 0x3u - case MH_CORE: return eTypeCoreFile; // 0x4u - case MH_PRELOAD: return eTypeSharedLibrary; // 0x5u - case MH_DYLIB: return eTypeSharedLibrary; // 0x6u - case MH_DYLINKER: return eTypeDynamicLinker; // 0x7u - case MH_BUNDLE: return eTypeSharedLibrary; // 0x8u - case MH_DYLIB_STUB: return eTypeStubLibrary; // 0x9u - case MH_DSYM: return eTypeDebugInfo; // 0xAu - case MH_KEXT_BUNDLE: return eTypeSharedLibrary; // 0xBu - default: + } + } + } break; + + default: + break; + } + offset = cmd_offset + load_cmd.cmdsize; + } + + if (!rpath_paths.empty()) { + // Fixup all LC_RPATH values to be absolute paths + FileSpec this_file_spec(m_file); + this_file_spec.ResolvePath(); + std::string loader_path("@loader_path"); + std::string executable_path("@executable_path"); + for (auto &rpath : rpath_paths) { + if (rpath.find(loader_path) == 0) { + rpath.erase(0, loader_path.size()); + rpath.insert(0, this_file_spec.GetDirectory().GetCString()); + } else if (rpath.find(executable_path) == 0) { + rpath.erase(0, executable_path.size()); + rpath.insert(0, this_file_spec.GetDirectory().GetCString()); + } + } + + for (const auto &rpath_relative_path : rpath_relative_paths) { + for (const auto &rpath : rpath_paths) { + std::string path = rpath; + path += rpath_relative_path; + // It is OK to resolve this path because we must find a file on + // disk for us to accept it anyway if it is rpath relative. + FileSpec file_spec(path, true); + // Remove any redundant parts of the path (like "../foo") since + // LC_RPATH values often contain "..". + file_spec = file_spec.GetNormalizedPath(); + if (file_spec.Exists() && files.AppendIfUnique(file_spec)) { + count++; break; + } + } + } } - return eTypeUnknown; + } + return count; } -ObjectFile::Strata -ObjectFileMachO::CalculateStrata() -{ - switch (m_header.filetype) - { - case MH_OBJECT: // 0x1u +lldb_private::Address ObjectFileMachO::GetEntryPointAddress() { + // If the object file is not an executable it can't hold the entry point. + // m_entry_point_address + // is initialized to an invalid address, so we can just return that. + // If m_entry_point_address is valid it means we've found it already, so + // return the cached value. + + if (!IsExecutable() || m_entry_point_address.IsValid()) + return m_entry_point_address; + + // Otherwise, look for the UnixThread or Thread command. The data for the + // Thread command is given in + // /usr/include/mach-o.h, but it is basically: + // + // uint32_t flavor - this is the flavor argument you would pass to + // thread_get_state + // uint32_t count - this is the count of longs in the thread state data + // struct XXX_thread_state state - this is the structure from + // <machine/thread_status.h> corresponding to the flavor. + // <repeat this trio> + // + // So we just keep reading the various register flavors till we find the GPR + // one, then read the PC out of there. + // FIXME: We will need to have a "RegisterContext data provider" class at some + // point that can get all the registers + // out of data in this form & attach them to a given thread. That should + // underlie the MacOS X User process plugin, + // and we'll also need it for the MacOS X Core File process plugin. When we + // have that we can also use it here. + // + // For now we hard-code the offsets and flavors we need: + // + // + + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + struct load_command load_cmd; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + uint32_t i; + lldb::addr_t start_address = LLDB_INVALID_ADDRESS; + bool done = false; + + for (i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t cmd_offset = offset; + if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) + break; + + switch (load_cmd.cmd) { + case LC_UNIXTHREAD: + case LC_THREAD: { + while (offset < cmd_offset + load_cmd.cmdsize) { + uint32_t flavor = m_data.GetU32(&offset); + uint32_t count = m_data.GetU32(&offset); + if (count == 0) { + // We've gotten off somehow, log and exit; + return m_entry_point_address; + } + + switch (m_header.cputype) { + case llvm::MachO::CPU_TYPE_ARM: + if (flavor == 1 || + flavor == 9) // ARM_THREAD_STATE/ARM_THREAD_STATE32 from + // mach/arm/thread_status.h { - // 32 bit kexts are just object files, but they do have a valid - // UUID load command. - UUID uuid; - if (GetUUID(&uuid)) - { - // this checking for the UUID load command is not enough - // we could eventually look for the symbol named - // "OSKextGetCurrentIdentifier" as this is required of kexts - if (m_type == eTypeInvalid) - m_type = eTypeSharedLibrary; - - return eStrataKernel; - } + offset += 60; // This is the offset of pc in the GPR thread state + // data structure. + start_address = m_data.GetU32(&offset); + done = true; } - return eStrataUnknown; - - case MH_EXECUTE: // 0x2u - // Check for the MH_DYLDLINK bit in the flags - if (m_header.flags & MH_DYLDLINK) + break; + case llvm::MachO::CPU_TYPE_ARM64: + if (flavor == 6) // ARM_THREAD_STATE64 from mach/arm/thread_status.h { - return eStrataUser; + offset += 256; // This is the offset of pc in the GPR thread state + // data structure. + start_address = m_data.GetU64(&offset); + done = true; } - else + break; + case llvm::MachO::CPU_TYPE_I386: + if (flavor == + 1) // x86_THREAD_STATE32 from mach/i386/thread_status.h { - SectionList *section_list = GetSectionList(); - if (section_list) - { - static ConstString g_kld_section_name ("__KLD"); - if (section_list->FindSectionByName(g_kld_section_name)) - return eStrataKernel; - } + offset += 40; // This is the offset of eip in the GPR thread state + // data structure. + start_address = m_data.GetU32(&offset); + done = true; } - return eStrataRawImage; - - case MH_FVMLIB: return eStrataUser; // 0x3u - case MH_CORE: return eStrataUnknown; // 0x4u - case MH_PRELOAD: return eStrataRawImage; // 0x5u - case MH_DYLIB: return eStrataUser; // 0x6u - case MH_DYLINKER: return eStrataUser; // 0x7u - case MH_BUNDLE: return eStrataUser; // 0x8u - case MH_DYLIB_STUB: return eStrataUser; // 0x9u - case MH_DSYM: return eStrataUnknown; // 0xAu - case MH_KEXT_BUNDLE: return eStrataKernel; // 0xBu - default: break; + case llvm::MachO::CPU_TYPE_X86_64: + if (flavor == + 4) // x86_THREAD_STATE64 from mach/i386/thread_status.h + { + offset += 16 * 8; // This is the offset of rip in the GPR thread + // state data structure. + start_address = m_data.GetU64(&offset); + done = true; + } + break; + default: + return m_entry_point_address; + } + // Haven't found the GPR flavor yet, skip over the data for this + // flavor: + if (done) + break; + offset += count * 4; + } + } break; + case LC_MAIN: { + ConstString text_segment_name("__TEXT"); + uint64_t entryoffset = m_data.GetU64(&offset); + SectionSP text_segment_sp = + GetSectionList()->FindSectionByName(text_segment_name); + if (text_segment_sp) { + done = true; + start_address = text_segment_sp->GetFileAddress() + entryoffset; + } + } break; + + default: + break; + } + if (done) + break; + + // Go to the next load command: + offset = cmd_offset + load_cmd.cmdsize; } - return eStrataUnknown; + + if (start_address != LLDB_INVALID_ADDRESS) { + // We got the start address from the load commands, so now resolve that + // address in the sections + // of this ObjectFile: + if (!m_entry_point_address.ResolveAddressUsingFileSections( + start_address, GetSectionList())) { + m_entry_point_address.Clear(); + } + } else { + // We couldn't read the UnixThread load command - maybe it wasn't there. + // As a fallback look for the + // "start" symbol in the main executable. + + ModuleSP module_sp(GetModule()); + + if (module_sp) { + SymbolContextList contexts; + SymbolContext context; + if (module_sp->FindSymbolsWithNameAndType(ConstString("start"), + eSymbolTypeCode, contexts)) { + if (contexts.GetContextAtIndex(0, context)) + m_entry_point_address = context.symbol->GetAddress(); + } + } + } + } + + return m_entry_point_address; } -uint32_t -ObjectFileMachO::GetVersion (uint32_t *versions, uint32_t num_versions) -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - struct dylib_command load_cmd; - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - uint32_t version_cmd = 0; - uint64_t version = 0; - uint32_t i; - for (i=0; i<m_header.ncmds; ++i) - { - const lldb::offset_t cmd_offset = offset; - if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) - break; +lldb_private::Address ObjectFileMachO::GetHeaderAddress() { + lldb_private::Address header_addr; + SectionList *section_list = GetSectionList(); + if (section_list) { + SectionSP text_segment_sp( + section_list->FindSectionByName(GetSegmentNameTEXT())); + if (text_segment_sp) { + header_addr.SetSection(text_segment_sp); + header_addr.SetOffset(0); + } + } + return header_addr; +} - if (load_cmd.cmd == LC_ID_DYLIB) - { - if (version_cmd == 0) - { - version_cmd = load_cmd.cmd; - if (m_data.GetU32(&offset, &load_cmd.dylib, 4) == NULL) - break; - version = load_cmd.dylib.current_version; - } - break; // Break for now unless there is another more complete version - // number load command in the future. - } - offset = cmd_offset + load_cmd.cmdsize; +uint32_t ObjectFileMachO::GetNumThreadContexts() { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + if (!m_thread_context_offsets_valid) { + m_thread_context_offsets_valid = true; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + FileRangeArray::Entry file_range; + thread_command thread_cmd; + for (uint32_t i = 0; i < m_header.ncmds; ++i) { + const uint32_t cmd_offset = offset; + if (m_data.GetU32(&offset, &thread_cmd, 2) == NULL) + break; + + if (thread_cmd.cmd == LC_THREAD) { + file_range.SetRangeBase(offset); + file_range.SetByteSize(thread_cmd.cmdsize - 8); + m_thread_context_offsets.Append(file_range); } + offset = cmd_offset + thread_cmd.cmdsize; + } + } + } + return m_thread_context_offsets.GetSize(); +} - if (version_cmd == LC_ID_DYLIB) - { - if (versions != NULL && num_versions > 0) - { - if (num_versions > 0) - versions[0] = (version & 0xFFFF0000ull) >> 16; - if (num_versions > 1) - versions[1] = (version & 0x0000FF00ull) >> 8; - if (num_versions > 2) - versions[2] = (version & 0x000000FFull); - // Fill in an remaining version numbers with invalid values - for (i=3; i<num_versions; ++i) - versions[i] = UINT32_MAX; - } - // The LC_ID_DYLIB load command has a version with 3 version numbers - // in it, so always return 3 - return 3; - } +lldb::RegisterContextSP +ObjectFileMachO::GetThreadContextAtIndex(uint32_t idx, + lldb_private::Thread &thread) { + lldb::RegisterContextSP reg_ctx_sp; + + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + if (!m_thread_context_offsets_valid) + GetNumThreadContexts(); + + const FileRangeArray::Entry *thread_context_file_range = + m_thread_context_offsets.GetEntryAtIndex(idx); + if (thread_context_file_range) { + + DataExtractor data(m_data, thread_context_file_range->GetRangeBase(), + thread_context_file_range->GetByteSize()); + + switch (m_header.cputype) { + case llvm::MachO::CPU_TYPE_ARM64: + reg_ctx_sp.reset(new RegisterContextDarwin_arm64_Mach(thread, data)); + break; + + case llvm::MachO::CPU_TYPE_ARM: + reg_ctx_sp.reset(new RegisterContextDarwin_arm_Mach(thread, data)); + break; + + case llvm::MachO::CPU_TYPE_I386: + reg_ctx_sp.reset(new RegisterContextDarwin_i386_Mach(thread, data)); + break; + + case llvm::MachO::CPU_TYPE_X86_64: + reg_ctx_sp.reset(new RegisterContextDarwin_x86_64_Mach(thread, data)); + break; + } } - return false; + } + return reg_ctx_sp; } -bool -ObjectFileMachO::GetArchitecture (ArchSpec &arch) -{ - ModuleSP module_sp(GetModule()); - if (module_sp) - { - std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); - return GetArchitecture (m_header, m_data, MachHeaderSizeFromMagic(m_header.magic), arch); +ObjectFile::Type ObjectFileMachO::CalculateType() { + switch (m_header.filetype) { + case MH_OBJECT: // 0x1u + if (GetAddressByteSize() == 4) { + // 32 bit kexts are just object files, but they do have a valid + // UUID load command. + UUID uuid; + if (GetUUID(&uuid)) { + // this checking for the UUID load command is not enough + // we could eventually look for the symbol named + // "OSKextGetCurrentIdentifier" as this is required of kexts + if (m_strata == eStrataInvalid) + m_strata = eStrataKernel; + return eTypeSharedLibrary; + } } - return false; + return eTypeObjectFile; + + case MH_EXECUTE: + return eTypeExecutable; // 0x2u + case MH_FVMLIB: + return eTypeSharedLibrary; // 0x3u + case MH_CORE: + return eTypeCoreFile; // 0x4u + case MH_PRELOAD: + return eTypeSharedLibrary; // 0x5u + case MH_DYLIB: + return eTypeSharedLibrary; // 0x6u + case MH_DYLINKER: + return eTypeDynamicLinker; // 0x7u + case MH_BUNDLE: + return eTypeSharedLibrary; // 0x8u + case MH_DYLIB_STUB: + return eTypeStubLibrary; // 0x9u + case MH_DSYM: + return eTypeDebugInfo; // 0xAu + case MH_KEXT_BUNDLE: + return eTypeSharedLibrary; // 0xBu + default: + break; + } + return eTypeUnknown; } -UUID -ObjectFileMachO::GetProcessSharedCacheUUID (Process *process) -{ +ObjectFile::Strata ObjectFileMachO::CalculateStrata() { + switch (m_header.filetype) { + case MH_OBJECT: // 0x1u + { + // 32 bit kexts are just object files, but they do have a valid + // UUID load command. UUID uuid; - if (process) - { - addr_t all_image_infos = process->GetImageInfoAddress(); - - // The address returned by GetImageInfoAddress may be the address of dyld (don't want) - // or it may be the address of the dyld_all_image_infos structure (want). The first four - // bytes will be either the version field (all_image_infos) or a Mach-O file magic constant. - // Version 13 and higher of dyld_all_image_infos is required to get the sharedCacheUUID field. - - Error err; - uint32_t version_or_magic = process->ReadUnsignedIntegerFromMemory (all_image_infos, 4, -1, err); - if (version_or_magic != static_cast<uint32_t>(-1) - && version_or_magic != MH_MAGIC - && version_or_magic != MH_CIGAM - && version_or_magic != MH_MAGIC_64 - && version_or_magic != MH_CIGAM_64 - && version_or_magic >= 13) - { - addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS; - int wordsize = process->GetAddressByteSize(); - if (wordsize == 8) - { - sharedCacheUUID_address = all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h> - } - if (wordsize == 4) - { - sharedCacheUUID_address = all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h> - } - if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) - { - uuid_t shared_cache_uuid; - if (process->ReadMemory (sharedCacheUUID_address, shared_cache_uuid, sizeof (uuid_t), err) == sizeof (uuid_t)) - { - uuid.SetBytes (shared_cache_uuid); - } - } + if (GetUUID(&uuid)) { + // this checking for the UUID load command is not enough + // we could eventually look for the symbol named + // "OSKextGetCurrentIdentifier" as this is required of kexts + if (m_type == eTypeInvalid) + m_type = eTypeSharedLibrary; + + return eStrataKernel; + } + } + return eStrataUnknown; + + case MH_EXECUTE: // 0x2u + // Check for the MH_DYLDLINK bit in the flags + if (m_header.flags & MH_DYLDLINK) { + return eStrataUser; + } else { + SectionList *section_list = GetSectionList(); + if (section_list) { + static ConstString g_kld_section_name("__KLD"); + if (section_list->FindSectionByName(g_kld_section_name)) + return eStrataKernel; + } + } + return eStrataRawImage; + + case MH_FVMLIB: + return eStrataUser; // 0x3u + case MH_CORE: + return eStrataUnknown; // 0x4u + case MH_PRELOAD: + return eStrataRawImage; // 0x5u + case MH_DYLIB: + return eStrataUser; // 0x6u + case MH_DYLINKER: + return eStrataUser; // 0x7u + case MH_BUNDLE: + return eStrataUser; // 0x8u + case MH_DYLIB_STUB: + return eStrataUser; // 0x9u + case MH_DSYM: + return eStrataUnknown; // 0xAu + case MH_KEXT_BUNDLE: + return eStrataKernel; // 0xBu + default: + break; + } + return eStrataUnknown; +} + +uint32_t ObjectFileMachO::GetVersion(uint32_t *versions, + uint32_t num_versions) { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + struct dylib_command load_cmd; + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + uint32_t version_cmd = 0; + uint64_t version = 0; + uint32_t i; + for (i = 0; i < m_header.ncmds; ++i) { + const lldb::offset_t cmd_offset = offset; + if (m_data.GetU32(&offset, &load_cmd, 2) == NULL) + break; + + if (load_cmd.cmd == LC_ID_DYLIB) { + if (version_cmd == 0) { + version_cmd = load_cmd.cmd; + if (m_data.GetU32(&offset, &load_cmd.dylib, 4) == NULL) + break; + version = load_cmd.dylib.current_version; } + break; // Break for now unless there is another more complete version + // number load command in the future. + } + offset = cmd_offset + load_cmd.cmdsize; + } + + if (version_cmd == LC_ID_DYLIB) { + if (versions != NULL && num_versions > 0) { + if (num_versions > 0) + versions[0] = (version & 0xFFFF0000ull) >> 16; + if (num_versions > 1) + versions[1] = (version & 0x0000FF00ull) >> 8; + if (num_versions > 2) + versions[2] = (version & 0x000000FFull); + // Fill in an remaining version numbers with invalid values + for (i = 3; i < num_versions; ++i) + versions[i] = UINT32_MAX; + } + // The LC_ID_DYLIB load command has a version with 3 version numbers + // in it, so always return 3 + return 3; } - return uuid; + } + return false; } -UUID -ObjectFileMachO::GetLLDBSharedCacheUUID () -{ - UUID uuid; -#if defined (__APPLE__) && (defined (__arm__) || defined (__arm64__) || defined (__aarch64__)) - uint8_t *(*dyld_get_all_image_infos)(void); - dyld_get_all_image_infos = (uint8_t*(*)()) dlsym (RTLD_DEFAULT, "_dyld_get_all_image_infos"); - if (dyld_get_all_image_infos) - { - uint8_t *dyld_all_image_infos_address = dyld_get_all_image_infos(); - if (dyld_all_image_infos_address) - { - uint32_t *version = (uint32_t*) dyld_all_image_infos_address; // version <mach-o/dyld_images.h> - if (*version >= 13) - { - uuid_t *sharedCacheUUID_address = 0; - int wordsize = sizeof (uint8_t *); - if (wordsize == 8) - { - sharedCacheUUID_address = (uuid_t*) ((uint8_t*) dyld_all_image_infos_address + 160); // sharedCacheUUID <mach-o/dyld_images.h> - } - else - { - sharedCacheUUID_address = (uuid_t*) ((uint8_t*) dyld_all_image_infos_address + 84); // sharedCacheUUID <mach-o/dyld_images.h> - } - uuid.SetBytes (sharedCacheUUID_address); - } +bool ObjectFileMachO::GetArchitecture(ArchSpec &arch) { + ModuleSP module_sp(GetModule()); + if (module_sp) { + std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); + return GetArchitecture(m_header, m_data, + MachHeaderSizeFromMagic(m_header.magic), arch); + } + return false; +} + +UUID ObjectFileMachO::GetProcessSharedCacheUUID(Process *process) { + UUID uuid; + if (process && process->GetDynamicLoader()) { + DynamicLoader *dl = process->GetDynamicLoader(); + addr_t load_address; + LazyBool using_shared_cache; + LazyBool private_shared_cache; + dl->GetSharedCacheInformation(load_address, uuid, using_shared_cache, + private_shared_cache); + } + return uuid; +} + +UUID ObjectFileMachO::GetLLDBSharedCacheUUID() { + UUID uuid; +#if defined(__APPLE__) && \ + (defined(__arm__) || defined(__arm64__) || defined(__aarch64__)) + uint8_t *(*dyld_get_all_image_infos)(void); + dyld_get_all_image_infos = + (uint8_t * (*)())dlsym(RTLD_DEFAULT, "_dyld_get_all_image_infos"); + if (dyld_get_all_image_infos) { + uint8_t *dyld_all_image_infos_address = dyld_get_all_image_infos(); + if (dyld_all_image_infos_address) { + uint32_t *version = (uint32_t *) + dyld_all_image_infos_address; // version <mach-o/dyld_images.h> + if (*version >= 13) { + uuid_t *sharedCacheUUID_address = 0; + int wordsize = sizeof(uint8_t *); + if (wordsize == 8) { + sharedCacheUUID_address = + (uuid_t *)((uint8_t *)dyld_all_image_infos_address + + 160); // sharedCacheUUID <mach-o/dyld_images.h> + } else { + sharedCacheUUID_address = + (uuid_t *)((uint8_t *)dyld_all_image_infos_address + + 84); // sharedCacheUUID <mach-o/dyld_images.h> } + uuid.SetBytes(sharedCacheUUID_address); + } } + } #endif - return uuid; + return uuid; } -uint32_t -ObjectFileMachO::GetMinimumOSVersion (uint32_t *versions, uint32_t num_versions) -{ - if (m_min_os_versions.empty()) - { - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - bool success = false; - for (uint32_t i=0; success == false && i < m_header.ncmds; ++i) - { - const lldb::offset_t load_cmd_offset = offset; - - version_min_command lc; - if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) - break; - if (lc.cmd == llvm::MachO::LC_VERSION_MIN_MACOSX - || lc.cmd == llvm::MachO::LC_VERSION_MIN_IPHONEOS - || lc.cmd == llvm::MachO::LC_VERSION_MIN_TVOS - || lc.cmd == llvm::MachO::LC_VERSION_MIN_WATCHOS) - { - if (m_data.GetU32 (&offset, &lc.version, (sizeof(lc) / sizeof(uint32_t)) - 2)) - { - const uint32_t xxxx = lc.version >> 16; - const uint32_t yy = (lc.version >> 8) & 0xffu; - const uint32_t zz = lc.version & 0xffu; - if (xxxx) - { - m_min_os_versions.push_back(xxxx); - m_min_os_versions.push_back(yy); - m_min_os_versions.push_back(zz); - } - success = true; - } - } - offset = load_cmd_offset + lc.cmdsize; - } - - if (success == false) - { - // Push an invalid value so we don't keep trying to - m_min_os_versions.push_back(UINT32_MAX); +uint32_t ObjectFileMachO::GetMinimumOSVersion(uint32_t *versions, + uint32_t num_versions) { + if (m_min_os_versions.empty()) { + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + bool success = false; + for (uint32_t i = 0; success == false && i < m_header.ncmds; ++i) { + const lldb::offset_t load_cmd_offset = offset; + + version_min_command lc; + if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) + break; + if (lc.cmd == llvm::MachO::LC_VERSION_MIN_MACOSX || + lc.cmd == llvm::MachO::LC_VERSION_MIN_IPHONEOS || + lc.cmd == llvm::MachO::LC_VERSION_MIN_TVOS || + lc.cmd == llvm::MachO::LC_VERSION_MIN_WATCHOS) { + if (m_data.GetU32(&offset, &lc.version, + (sizeof(lc) / sizeof(uint32_t)) - 2)) { + const uint32_t xxxx = lc.version >> 16; + const uint32_t yy = (lc.version >> 8) & 0xffu; + const uint32_t zz = lc.version & 0xffu; + if (xxxx) { + m_min_os_versions.push_back(xxxx); + m_min_os_versions.push_back(yy); + m_min_os_versions.push_back(zz); + } + success = true; } + } + offset = load_cmd_offset + lc.cmdsize; } - - if (m_min_os_versions.size() > 1 || m_min_os_versions[0] != UINT32_MAX) - { - if (versions != NULL && num_versions > 0) - { - for (size_t i=0; i<num_versions; ++i) - { - if (i < m_min_os_versions.size()) - versions[i] = m_min_os_versions[i]; - else - versions[i] = 0; - } - } - return m_min_os_versions.size(); + + if (success == false) { + // Push an invalid value so we don't keep trying to + m_min_os_versions.push_back(UINT32_MAX); + } + } + + if (m_min_os_versions.size() > 1 || m_min_os_versions[0] != UINT32_MAX) { + if (versions != NULL && num_versions > 0) { + for (size_t i = 0; i < num_versions; ++i) { + if (i < m_min_os_versions.size()) + versions[i] = m_min_os_versions[i]; + else + versions[i] = 0; + } } - // Call the superclasses version that will empty out the data - return ObjectFile::GetMinimumOSVersion (versions, num_versions); + return m_min_os_versions.size(); + } + // Call the superclasses version that will empty out the data + return ObjectFile::GetMinimumOSVersion(versions, num_versions); } -uint32_t -ObjectFileMachO::GetSDKVersion(uint32_t *versions, uint32_t num_versions) -{ - if (m_sdk_versions.empty()) - { - lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); - bool success = false; - for (uint32_t i=0; success == false && i < m_header.ncmds; ++i) - { - const lldb::offset_t load_cmd_offset = offset; - - version_min_command lc; - if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) - break; - if (lc.cmd == llvm::MachO::LC_VERSION_MIN_MACOSX - || lc.cmd == llvm::MachO::LC_VERSION_MIN_IPHONEOS - || lc.cmd == llvm::MachO::LC_VERSION_MIN_TVOS - || lc.cmd == llvm::MachO::LC_VERSION_MIN_WATCHOS) - { - if (m_data.GetU32 (&offset, &lc.version, (sizeof(lc) / sizeof(uint32_t)) - 2)) - { - const uint32_t xxxx = lc.sdk >> 16; - const uint32_t yy = (lc.sdk >> 8) & 0xffu; - const uint32_t zz = lc.sdk & 0xffu; - if (xxxx) - { - m_sdk_versions.push_back(xxxx); - m_sdk_versions.push_back(yy); - m_sdk_versions.push_back(zz); - } - success = true; - } - } - offset = load_cmd_offset + lc.cmdsize; - } - - if (success == false) - { - // Push an invalid value so we don't keep trying to - m_sdk_versions.push_back(UINT32_MAX); +uint32_t ObjectFileMachO::GetSDKVersion(uint32_t *versions, + uint32_t num_versions) { + if (m_sdk_versions.empty()) { + lldb::offset_t offset = MachHeaderSizeFromMagic(m_header.magic); + bool success = false; + for (uint32_t i = 0; success == false && i < m_header.ncmds; ++i) { + const lldb::offset_t load_cmd_offset = offset; + + version_min_command lc; + if (m_data.GetU32(&offset, &lc.cmd, 2) == NULL) + break; + if (lc.cmd == llvm::MachO::LC_VERSION_MIN_MACOSX || + lc.cmd == llvm::MachO::LC_VERSION_MIN_IPHONEOS || + lc.cmd == llvm::MachO::LC_VERSION_MIN_TVOS || + lc.cmd == llvm::MachO::LC_VERSION_MIN_WATCHOS) { + if (m_data.GetU32(&offset, &lc.version, + (sizeof(lc) / sizeof(uint32_t)) - 2)) { + const uint32_t xxxx = lc.sdk >> 16; + const uint32_t yy = (lc.sdk >> 8) & 0xffu; + const uint32_t zz = lc.sdk & 0xffu; + if (xxxx) { + m_sdk_versions.push_back(xxxx); + m_sdk_versions.push_back(yy); + m_sdk_versions.push_back(zz); + } + success = true; } + } + offset = load_cmd_offset + lc.cmdsize; } - - if (m_sdk_versions.size() > 1 || m_sdk_versions[0] != UINT32_MAX) - { - if (versions != NULL && num_versions > 0) - { - for (size_t i=0; i<num_versions; ++i) - { - if (i < m_sdk_versions.size()) - versions[i] = m_sdk_versions[i]; - else - versions[i] = 0; - } - } - return m_sdk_versions.size(); + + if (success == false) { + // Push an invalid value so we don't keep trying to + m_sdk_versions.push_back(UINT32_MAX); } - // Call the superclasses version that will empty out the data - return ObjectFile::GetSDKVersion (versions, num_versions); + } + + if (m_sdk_versions.size() > 1 || m_sdk_versions[0] != UINT32_MAX) { + if (versions != NULL && num_versions > 0) { + for (size_t i = 0; i < num_versions; ++i) { + if (i < m_sdk_versions.size()) + versions[i] = m_sdk_versions[i]; + else + versions[i] = 0; + } + } + return m_sdk_versions.size(); + } + // Call the superclasses version that will empty out the data + return ObjectFile::GetSDKVersion(versions, num_versions); } -bool -ObjectFileMachO::GetIsDynamicLinkEditor() -{ - return m_header.filetype == llvm::MachO::MH_DYLINKER; +bool ObjectFileMachO::GetIsDynamicLinkEditor() { + return m_header.filetype == llvm::MachO::MH_DYLINKER; } -bool -ObjectFileMachO::AllowAssemblyEmulationUnwindPlans () -{ - return m_allow_assembly_emulation_unwind_plans; +bool ObjectFileMachO::AllowAssemblyEmulationUnwindPlans() { + return m_allow_assembly_emulation_unwind_plans; } //------------------------------------------------------------------ // PluginInterface protocol //------------------------------------------------------------------ -lldb_private::ConstString -ObjectFileMachO::GetPluginName() -{ - return GetPluginNameStatic(); +lldb_private::ConstString ObjectFileMachO::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -ObjectFileMachO::GetPluginVersion() -{ - return 1; -} +uint32_t ObjectFileMachO::GetPluginVersion() { return 1; } -Section * -ObjectFileMachO::GetMachHeaderSection() -{ - // Find the first address of the mach header which is the first non-zero - // file sized section whose file offset is zero. This is the base file address - // of the mach-o file which can be subtracted from the vmaddr of the other - // segments found in memory and added to the load address - ModuleSP module_sp = GetModule(); - if (module_sp) - { - SectionList *section_list = GetSectionList (); - if (section_list) - { - lldb::addr_t mach_base_file_addr = LLDB_INVALID_ADDRESS; - const size_t num_sections = section_list->GetSize(); - - for (size_t sect_idx = 0; - sect_idx < num_sections && mach_base_file_addr == LLDB_INVALID_ADDRESS; - ++sect_idx) - { - Section *section = section_list->GetSectionAtIndex (sect_idx).get(); - if (section && - section->GetFileSize() > 0 && - section->GetFileOffset() == 0 && - section->IsThreadSpecific() == false && - module_sp.get() == section->GetModule().get()) - { - return section; - } - } +Section *ObjectFileMachO::GetMachHeaderSection() { + // Find the first address of the mach header which is the first non-zero + // file sized section whose file offset is zero. This is the base file address + // of the mach-o file which can be subtracted from the vmaddr of the other + // segments found in memory and added to the load address + ModuleSP module_sp = GetModule(); + if (module_sp) { + SectionList *section_list = GetSectionList(); + if (section_list) { + lldb::addr_t mach_base_file_addr = LLDB_INVALID_ADDRESS; + const size_t num_sections = section_list->GetSize(); + + for (size_t sect_idx = 0; sect_idx < num_sections && + mach_base_file_addr == LLDB_INVALID_ADDRESS; + ++sect_idx) { + Section *section = section_list->GetSectionAtIndex(sect_idx).get(); + if (section && section->GetFileSize() > 0 && + section->GetFileOffset() == 0 && + section->IsThreadSpecific() == false && + module_sp.get() == section->GetModule().get()) { + return section; } + } } - return nullptr; + } + return nullptr; } -lldb::addr_t -ObjectFileMachO::CalculateSectionLoadAddressForMemoryImage(lldb::addr_t mach_header_load_address, const Section *mach_header_section, const Section *section) -{ - ModuleSP module_sp = GetModule(); - if (module_sp && mach_header_section && section && mach_header_load_address != LLDB_INVALID_ADDRESS) - { - lldb::addr_t mach_header_file_addr = mach_header_section->GetFileAddress(); - if (mach_header_file_addr != LLDB_INVALID_ADDRESS) - { - if (section && - section->GetFileSize() > 0 && - section->IsThreadSpecific() == false && - module_sp.get() == section->GetModule().get()) - { - // Ignore __LINKEDIT and __DWARF segments - if (section->GetName() == GetSegmentNameLINKEDIT()) - { - // Only map __LINKEDIT if we have an in memory image and this isn't - // a kernel binary like a kext or mach_kernel. - const bool is_memory_image = (bool)m_process_wp.lock(); - const Strata strata = GetStrata(); - if (is_memory_image == false || strata == eStrataKernel) - return LLDB_INVALID_ADDRESS; - } - return section->GetFileAddress() - mach_header_file_addr + mach_header_load_address; - } +lldb::addr_t ObjectFileMachO::CalculateSectionLoadAddressForMemoryImage( + lldb::addr_t mach_header_load_address, const Section *mach_header_section, + const Section *section) { + ModuleSP module_sp = GetModule(); + if (module_sp && mach_header_section && section && + mach_header_load_address != LLDB_INVALID_ADDRESS) { + lldb::addr_t mach_header_file_addr = mach_header_section->GetFileAddress(); + if (mach_header_file_addr != LLDB_INVALID_ADDRESS) { + if (section && section->GetFileSize() > 0 && + section->IsThreadSpecific() == false && + module_sp.get() == section->GetModule().get()) { + // Ignore __LINKEDIT and __DWARF segments + if (section->GetName() == GetSegmentNameLINKEDIT()) { + // Only map __LINKEDIT if we have an in memory image and this isn't + // a kernel binary like a kext or mach_kernel. + const bool is_memory_image = (bool)m_process_wp.lock(); + const Strata strata = GetStrata(); + if (is_memory_image == false || strata == eStrataKernel) + return LLDB_INVALID_ADDRESS; } + return section->GetFileAddress() - mach_header_file_addr + + mach_header_load_address; + } } - return LLDB_INVALID_ADDRESS; + } + return LLDB_INVALID_ADDRESS; } -bool -ObjectFileMachO::SetLoadAddress (Target &target, - lldb::addr_t value, - bool value_is_offset) -{ - ModuleSP module_sp = GetModule(); - if (module_sp) - { - size_t num_loaded_sections = 0; - SectionList *section_list = GetSectionList (); - if (section_list) - { - const size_t num_sections = section_list->GetSize(); - - if (value_is_offset) - { - // "value" is an offset to apply to each top level segment - for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) - { - // Iterate through the object file sections to find all - // of the sections that size on disk (to avoid __PAGEZERO) - // and load them - SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); - if (section_sp && - section_sp->GetFileSize() > 0 && - section_sp->IsThreadSpecific() == false && - module_sp.get() == section_sp->GetModule().get()) - { - // Ignore __LINKEDIT and __DWARF segments - if (section_sp->GetName() == GetSegmentNameLINKEDIT()) - { - // Only map __LINKEDIT if we have an in memory image and this isn't - // a kernel binary like a kext or mach_kernel. - const bool is_memory_image = (bool)m_process_wp.lock(); - const Strata strata = GetStrata(); - if (is_memory_image == false || strata == eStrataKernel) - continue; - } - if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress() + value)) - ++num_loaded_sections; - } - } +bool ObjectFileMachO::SetLoadAddress(Target &target, lldb::addr_t value, + bool value_is_offset) { + ModuleSP module_sp = GetModule(); + if (module_sp) { + size_t num_loaded_sections = 0; + SectionList *section_list = GetSectionList(); + if (section_list) { + const size_t num_sections = section_list->GetSize(); + + if (value_is_offset) { + // "value" is an offset to apply to each top level segment + for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) { + // Iterate through the object file sections to find all + // of the sections that size on disk (to avoid __PAGEZERO) + // and load them + SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); + if (section_sp && section_sp->GetFileSize() > 0 && + section_sp->IsThreadSpecific() == false && + module_sp.get() == section_sp->GetModule().get()) { + // Ignore __LINKEDIT and __DWARF segments + if (section_sp->GetName() == GetSegmentNameLINKEDIT()) { + // Only map __LINKEDIT if we have an in memory image and this + // isn't + // a kernel binary like a kext or mach_kernel. + const bool is_memory_image = (bool)m_process_wp.lock(); + const Strata strata = GetStrata(); + if (is_memory_image == false || strata == eStrataKernel) + continue; } - else - { - // "value" is the new base address of the mach_header, adjust each - // section accordingly - - Section *mach_header_section = GetMachHeaderSection(); - if (mach_header_section) - { - for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) - { - SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); - - lldb::addr_t section_load_addr = CalculateSectionLoadAddressForMemoryImage(value, mach_header_section, section_sp.get()); - if (section_load_addr != LLDB_INVALID_ADDRESS) - { - if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_load_addr)) - ++num_loaded_sections; - } - } - } + if (target.GetSectionLoadList().SetSectionLoadAddress( + section_sp, section_sp->GetFileAddress() + value)) + ++num_loaded_sections; + } + } + } else { + // "value" is the new base address of the mach_header, adjust each + // section accordingly + + Section *mach_header_section = GetMachHeaderSection(); + if (mach_header_section) { + for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) { + SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); + + lldb::addr_t section_load_addr = + CalculateSectionLoadAddressForMemoryImage( + value, mach_header_section, section_sp.get()); + if (section_load_addr != LLDB_INVALID_ADDRESS) { + if (target.GetSectionLoadList().SetSectionLoadAddress( + section_sp, section_load_addr)) + ++num_loaded_sections; } + } } - return num_loaded_sections > 0; + } } - return false; + return num_loaded_sections > 0; + } + return false; } -bool -ObjectFileMachO::SaveCore (const lldb::ProcessSP &process_sp, - const FileSpec &outfile, - Error &error) -{ - if (process_sp) - { - Target &target = process_sp->GetTarget(); - const ArchSpec target_arch = target.GetArchitecture(); - const llvm::Triple &target_triple = target_arch.GetTriple(); - if (target_triple.getVendor() == llvm::Triple::Apple && - (target_triple.getOS() == llvm::Triple::MacOSX - || target_triple.getOS() == llvm::Triple::IOS - || target_triple.getOS() == llvm::Triple::WatchOS - || target_triple.getOS() == llvm::Triple::TvOS)) - { - bool make_core = false; - switch (target_arch.GetMachine()) - { - case llvm::Triple::aarch64: - case llvm::Triple::arm: - case llvm::Triple::thumb: - case llvm::Triple::x86: - case llvm::Triple::x86_64: - make_core = true; - break; - default: - error.SetErrorStringWithFormat ("unsupported core architecture: %s", target_triple.str().c_str()); - break; +bool ObjectFileMachO::SaveCore(const lldb::ProcessSP &process_sp, + const FileSpec &outfile, Error &error) { + if (process_sp) { + Target &target = process_sp->GetTarget(); + const ArchSpec target_arch = target.GetArchitecture(); + const llvm::Triple &target_triple = target_arch.GetTriple(); + if (target_triple.getVendor() == llvm::Triple::Apple && + (target_triple.getOS() == llvm::Triple::MacOSX || + target_triple.getOS() == llvm::Triple::IOS || + target_triple.getOS() == llvm::Triple::WatchOS || + target_triple.getOS() == llvm::Triple::TvOS)) { + bool make_core = false; + switch (target_arch.GetMachine()) { + case llvm::Triple::aarch64: + case llvm::Triple::arm: + case llvm::Triple::thumb: + case llvm::Triple::x86: + case llvm::Triple::x86_64: + make_core = true; + break; + default: + error.SetErrorStringWithFormat("unsupported core architecture: %s", + target_triple.str().c_str()); + break; + } + + if (make_core) { + std::vector<segment_command_64> segment_load_commands; + // uint32_t range_info_idx = 0; + MemoryRegionInfo range_info; + Error range_error = process_sp->GetMemoryRegionInfo(0, range_info); + const uint32_t addr_byte_size = target_arch.GetAddressByteSize(); + const ByteOrder byte_order = target_arch.GetByteOrder(); + if (range_error.Success()) { + while (range_info.GetRange().GetRangeBase() != LLDB_INVALID_ADDRESS) { + const addr_t addr = range_info.GetRange().GetRangeBase(); + const addr_t size = range_info.GetRange().GetByteSize(); + + if (size == 0) + break; + + // Calculate correct protections + uint32_t prot = 0; + if (range_info.GetReadable() == MemoryRegionInfo::eYes) + prot |= VM_PROT_READ; + if (range_info.GetWritable() == MemoryRegionInfo::eYes) + prot |= VM_PROT_WRITE; + if (range_info.GetExecutable() == MemoryRegionInfo::eYes) + prot |= VM_PROT_EXECUTE; + + // printf ("[%3u] [0x%16.16" PRIx64 " - + // 0x%16.16" PRIx64 ") %c%c%c\n", + // range_info_idx, + // addr, + // size, + // (prot & VM_PROT_READ ) ? 'r' : + // '-', + // (prot & VM_PROT_WRITE ) ? 'w' : + // '-', + // (prot & VM_PROT_EXECUTE) ? 'x' : + // '-'); + + if (prot != 0) { + uint32_t cmd_type = LC_SEGMENT_64; + uint32_t segment_size = sizeof(segment_command_64); + if (addr_byte_size == 4) { + cmd_type = LC_SEGMENT; + segment_size = sizeof(segment_command); + } + segment_command_64 segment = { + cmd_type, // uint32_t cmd; + segment_size, // uint32_t cmdsize; + {0}, // char segname[16]; + addr, // uint64_t vmaddr; // uint32_t for 32-bit Mach-O + size, // uint64_t vmsize; // uint32_t for 32-bit Mach-O + 0, // uint64_t fileoff; // uint32_t for 32-bit Mach-O + size, // uint64_t filesize; // uint32_t for 32-bit Mach-O + prot, // uint32_t maxprot; + prot, // uint32_t initprot; + 0, // uint32_t nsects; + 0}; // uint32_t flags; + segment_load_commands.push_back(segment); + } else { + // No protections and a size of 1 used to be returned from old + // debugservers when we asked about a region that was past the + // last memory region and it indicates the end... + if (size == 1) + break; } - - if (make_core) - { - std::vector<segment_command_64> segment_load_commands; -// uint32_t range_info_idx = 0; - MemoryRegionInfo range_info; - Error range_error = process_sp->GetMemoryRegionInfo(0, range_info); - const uint32_t addr_byte_size = target_arch.GetAddressByteSize(); - const ByteOrder byte_order = target_arch.GetByteOrder(); - if (range_error.Success()) - { - while (range_info.GetRange().GetRangeBase() != LLDB_INVALID_ADDRESS) - { - const addr_t addr = range_info.GetRange().GetRangeBase(); - const addr_t size = range_info.GetRange().GetByteSize(); - if (size == 0) - break; - - // Calculate correct protections - uint32_t prot = 0; - if (range_info.GetReadable() == MemoryRegionInfo::eYes) - prot |= VM_PROT_READ; - if (range_info.GetWritable() == MemoryRegionInfo::eYes) - prot |= VM_PROT_WRITE; - if (range_info.GetExecutable() == MemoryRegionInfo::eYes) - prot |= VM_PROT_EXECUTE; - -// printf ("[%3u] [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") %c%c%c\n", -// range_info_idx, -// addr, -// size, -// (prot & VM_PROT_READ ) ? 'r' : '-', -// (prot & VM_PROT_WRITE ) ? 'w' : '-', -// (prot & VM_PROT_EXECUTE) ? 'x' : '-'); - - if (prot != 0) - { - uint32_t cmd_type = LC_SEGMENT_64; - uint32_t segment_size = sizeof (segment_command_64); - if (addr_byte_size == 4) - { - cmd_type = LC_SEGMENT; - segment_size = sizeof (segment_command); - } - segment_command_64 segment = { - cmd_type, // uint32_t cmd; - segment_size, // uint32_t cmdsize; - {0}, // char segname[16]; - addr, // uint64_t vmaddr; // uint32_t for 32-bit Mach-O - size, // uint64_t vmsize; // uint32_t for 32-bit Mach-O - 0, // uint64_t fileoff; // uint32_t for 32-bit Mach-O - size, // uint64_t filesize; // uint32_t for 32-bit Mach-O - prot, // uint32_t maxprot; - prot, // uint32_t initprot; - 0, // uint32_t nsects; - 0 }; // uint32_t flags; - segment_load_commands.push_back(segment); - } - else - { - // No protections and a size of 1 used to be returned from old - // debugservers when we asked about a region that was past the - // last memory region and it indicates the end... - if (size == 1) - break; - } - - range_error = process_sp->GetMemoryRegionInfo(range_info.GetRange().GetRangeEnd(), range_info); - if (range_error.Fail()) - break; - } - - StreamString buffer (Stream::eBinary, - addr_byte_size, - byte_order); + range_error = process_sp->GetMemoryRegionInfo( + range_info.GetRange().GetRangeEnd(), range_info); + if (range_error.Fail()) + break; + } + + StreamString buffer(Stream::eBinary, addr_byte_size, byte_order); + + mach_header_64 mach_header; + if (addr_byte_size == 8) { + mach_header.magic = MH_MAGIC_64; + } else { + mach_header.magic = MH_MAGIC; + } + mach_header.cputype = target_arch.GetMachOCPUType(); + mach_header.cpusubtype = target_arch.GetMachOCPUSubType(); + mach_header.filetype = MH_CORE; + mach_header.ncmds = segment_load_commands.size(); + mach_header.flags = 0; + mach_header.reserved = 0; + ThreadList &thread_list = process_sp->GetThreadList(); + const uint32_t num_threads = thread_list.GetSize(); + + // Make an array of LC_THREAD data items. Each one contains + // the contents of the LC_THREAD load command. The data doesn't + // contain the load command + load command size, we will + // add the load command and load command size as we emit the data. + std::vector<StreamString> LC_THREAD_datas(num_threads); + for (auto &LC_THREAD_data : LC_THREAD_datas) { + LC_THREAD_data.GetFlags().Set(Stream::eBinary); + LC_THREAD_data.SetAddressByteSize(addr_byte_size); + LC_THREAD_data.SetByteOrder(byte_order); + } + for (uint32_t thread_idx = 0; thread_idx < num_threads; + ++thread_idx) { + ThreadSP thread_sp(thread_list.GetThreadAtIndex(thread_idx)); + if (thread_sp) { + switch (mach_header.cputype) { + case llvm::MachO::CPU_TYPE_ARM64: + RegisterContextDarwin_arm64_Mach::Create_LC_THREAD( + thread_sp.get(), LC_THREAD_datas[thread_idx]); + break; - mach_header_64 mach_header; - if (addr_byte_size == 8) - { - mach_header.magic = MH_MAGIC_64; - } - else - { - mach_header.magic = MH_MAGIC; - } - mach_header.cputype = target_arch.GetMachOCPUType(); - mach_header.cpusubtype = target_arch.GetMachOCPUSubType(); - mach_header.filetype = MH_CORE; - mach_header.ncmds = segment_load_commands.size(); - mach_header.flags = 0; - mach_header.reserved = 0; - ThreadList &thread_list = process_sp->GetThreadList(); - const uint32_t num_threads = thread_list.GetSize(); - - // Make an array of LC_THREAD data items. Each one contains - // the contents of the LC_THREAD load command. The data doesn't - // contain the load command + load command size, we will - // add the load command and load command size as we emit the data. - std::vector<StreamString> LC_THREAD_datas(num_threads); - for (auto &LC_THREAD_data : LC_THREAD_datas) - { - LC_THREAD_data.GetFlags().Set(Stream::eBinary); - LC_THREAD_data.SetAddressByteSize(addr_byte_size); - LC_THREAD_data.SetByteOrder(byte_order); - } - for (uint32_t thread_idx = 0; thread_idx < num_threads; ++thread_idx) - { - ThreadSP thread_sp (thread_list.GetThreadAtIndex(thread_idx)); - if (thread_sp) - { - switch (mach_header.cputype) - { - case llvm::MachO::CPU_TYPE_ARM64: - RegisterContextDarwin_arm64_Mach::Create_LC_THREAD (thread_sp.get(), LC_THREAD_datas[thread_idx]); - break; - - case llvm::MachO::CPU_TYPE_ARM: - RegisterContextDarwin_arm_Mach::Create_LC_THREAD (thread_sp.get(), LC_THREAD_datas[thread_idx]); - break; - - case llvm::MachO::CPU_TYPE_I386: - RegisterContextDarwin_i386_Mach::Create_LC_THREAD (thread_sp.get(), LC_THREAD_datas[thread_idx]); - break; - - case llvm::MachO::CPU_TYPE_X86_64: - RegisterContextDarwin_x86_64_Mach::Create_LC_THREAD (thread_sp.get(), LC_THREAD_datas[thread_idx]); - break; - } - - } - } - - // The size of the load command is the size of the segments... - if (addr_byte_size == 8) - { - mach_header.sizeofcmds = segment_load_commands.size() * sizeof (struct segment_command_64); - } - else - { - mach_header.sizeofcmds = segment_load_commands.size() * sizeof (struct segment_command); - } - - // and the size of all LC_THREAD load command - for (const auto &LC_THREAD_data : LC_THREAD_datas) - { - ++mach_header.ncmds; - mach_header.sizeofcmds += 8 + LC_THREAD_data.GetSize(); - } + case llvm::MachO::CPU_TYPE_ARM: + RegisterContextDarwin_arm_Mach::Create_LC_THREAD( + thread_sp.get(), LC_THREAD_datas[thread_idx]); + break; - printf ("mach_header: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x\n", - mach_header.magic, - mach_header.cputype, - mach_header.cpusubtype, - mach_header.filetype, - mach_header.ncmds, - mach_header.sizeofcmds, - mach_header.flags, - mach_header.reserved); - - // Write the mach header - buffer.PutHex32(mach_header.magic); - buffer.PutHex32(mach_header.cputype); - buffer.PutHex32(mach_header.cpusubtype); - buffer.PutHex32(mach_header.filetype); - buffer.PutHex32(mach_header.ncmds); - buffer.PutHex32(mach_header.sizeofcmds); - buffer.PutHex32(mach_header.flags); - if (addr_byte_size == 8) - { - buffer.PutHex32(mach_header.reserved); - } - - // Skip the mach header and all load commands and align to the next - // 0x1000 byte boundary - addr_t file_offset = buffer.GetSize() + mach_header.sizeofcmds; - if (file_offset & 0x00000fff) - { - file_offset += 0x00001000ull; - file_offset &= (~0x00001000ull + 1); - } - - for (auto &segment : segment_load_commands) - { - segment.fileoff = file_offset; - file_offset += segment.filesize; - } - - // Write out all of the LC_THREAD load commands - for (const auto &LC_THREAD_data : LC_THREAD_datas) - { - const size_t LC_THREAD_data_size = LC_THREAD_data.GetSize(); - buffer.PutHex32(LC_THREAD); - buffer.PutHex32(8 + LC_THREAD_data_size); // cmd + cmdsize + data - buffer.Write(LC_THREAD_data.GetData(), LC_THREAD_data_size); - } + case llvm::MachO::CPU_TYPE_I386: + RegisterContextDarwin_i386_Mach::Create_LC_THREAD( + thread_sp.get(), LC_THREAD_datas[thread_idx]); + break; - // Write out all of the segment load commands - for (const auto &segment : segment_load_commands) - { - printf ("0x%8.8x 0x%8.8x [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") [0x%16.16" PRIx64 " 0x%16.16" PRIx64 ") 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x]\n", - segment.cmd, - segment.cmdsize, - segment.vmaddr, - segment.vmaddr + segment.vmsize, - segment.fileoff, - segment.filesize, - segment.maxprot, - segment.initprot, - segment.nsects, - segment.flags); - - buffer.PutHex32(segment.cmd); - buffer.PutHex32(segment.cmdsize); - buffer.PutRawBytes(segment.segname, sizeof(segment.segname)); - if (addr_byte_size == 8) - { - buffer.PutHex64(segment.vmaddr); - buffer.PutHex64(segment.vmsize); - buffer.PutHex64(segment.fileoff); - buffer.PutHex64(segment.filesize); - } - else - { - buffer.PutHex32(static_cast<uint32_t>(segment.vmaddr)); - buffer.PutHex32(static_cast<uint32_t>(segment.vmsize)); - buffer.PutHex32(static_cast<uint32_t>(segment.fileoff)); - buffer.PutHex32(static_cast<uint32_t>(segment.filesize)); - } - buffer.PutHex32(segment.maxprot); - buffer.PutHex32(segment.initprot); - buffer.PutHex32(segment.nsects); - buffer.PutHex32(segment.flags); - } - - File core_file; - std::string core_file_path(outfile.GetPath()); - error = core_file.Open(core_file_path.c_str(), - File::eOpenOptionWrite | - File::eOpenOptionTruncate | - File::eOpenOptionCanCreate); - if (error.Success()) - { - // Read 1 page at a time - uint8_t bytes[0x1000]; - // Write the mach header and load commands out to the core file - size_t bytes_written = buffer.GetString().size(); - error = core_file.Write(buffer.GetString().data(), bytes_written); - if (error.Success()) - { - // Now write the file data for all memory segments in the process - for (const auto &segment : segment_load_commands) - { - if (core_file.SeekFromStart(segment.fileoff) == -1) - { - error.SetErrorStringWithFormat("unable to seek to offset 0x%" PRIx64 " in '%s'", segment.fileoff, core_file_path.c_str()); - break; - } - - printf ("Saving %" PRId64 " bytes of data for memory region at 0x%" PRIx64 "\n", segment.vmsize, segment.vmaddr); - addr_t bytes_left = segment.vmsize; - addr_t addr = segment.vmaddr; - Error memory_read_error; - while (bytes_left > 0 && error.Success()) - { - const size_t bytes_to_read = bytes_left > sizeof(bytes) ? sizeof(bytes) : bytes_left; - const size_t bytes_read = process_sp->ReadMemory(addr, bytes, bytes_to_read, memory_read_error); - if (bytes_read == bytes_to_read) - { - size_t bytes_written = bytes_read; - error = core_file.Write(bytes, bytes_written); - bytes_left -= bytes_read; - addr += bytes_read; - } - else - { - // Some pages within regions are not readable, those - // should be zero filled - memset (bytes, 0, bytes_to_read); - size_t bytes_written = bytes_to_read; - error = core_file.Write(bytes, bytes_written); - bytes_left -= bytes_to_read; - addr += bytes_to_read; - } - } - } - } - } + case llvm::MachO::CPU_TYPE_X86_64: + RegisterContextDarwin_x86_64_Mach::Create_LC_THREAD( + thread_sp.get(), LC_THREAD_datas[thread_idx]); + break; + } + } + } + + // The size of the load command is the size of the segments... + if (addr_byte_size == 8) { + mach_header.sizeofcmds = segment_load_commands.size() * + sizeof(struct segment_command_64); + } else { + mach_header.sizeofcmds = + segment_load_commands.size() * sizeof(struct segment_command); + } + + // and the size of all LC_THREAD load command + for (const auto &LC_THREAD_data : LC_THREAD_datas) { + ++mach_header.ncmds; + mach_header.sizeofcmds += 8 + LC_THREAD_data.GetSize(); + } + + printf("mach_header: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x " + "0x%8.8x 0x%8.8x\n", + mach_header.magic, mach_header.cputype, mach_header.cpusubtype, + mach_header.filetype, mach_header.ncmds, + mach_header.sizeofcmds, mach_header.flags, + mach_header.reserved); + + // Write the mach header + buffer.PutHex32(mach_header.magic); + buffer.PutHex32(mach_header.cputype); + buffer.PutHex32(mach_header.cpusubtype); + buffer.PutHex32(mach_header.filetype); + buffer.PutHex32(mach_header.ncmds); + buffer.PutHex32(mach_header.sizeofcmds); + buffer.PutHex32(mach_header.flags); + if (addr_byte_size == 8) { + buffer.PutHex32(mach_header.reserved); + } + + // Skip the mach header and all load commands and align to the next + // 0x1000 byte boundary + addr_t file_offset = buffer.GetSize() + mach_header.sizeofcmds; + if (file_offset & 0x00000fff) { + file_offset += 0x00001000ull; + file_offset &= (~0x00001000ull + 1); + } + + for (auto &segment : segment_load_commands) { + segment.fileoff = file_offset; + file_offset += segment.filesize; + } + + // Write out all of the LC_THREAD load commands + for (const auto &LC_THREAD_data : LC_THREAD_datas) { + const size_t LC_THREAD_data_size = LC_THREAD_data.GetSize(); + buffer.PutHex32(LC_THREAD); + buffer.PutHex32(8 + LC_THREAD_data_size); // cmd + cmdsize + data + buffer.Write(LC_THREAD_data.GetString().data(), + LC_THREAD_data_size); + } + + // Write out all of the segment load commands + for (const auto &segment : segment_load_commands) { + printf("0x%8.8x 0x%8.8x [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 + ") [0x%16.16" PRIx64 " 0x%16.16" PRIx64 + ") 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x]\n", + segment.cmd, segment.cmdsize, segment.vmaddr, + segment.vmaddr + segment.vmsize, segment.fileoff, + segment.filesize, segment.maxprot, segment.initprot, + segment.nsects, segment.flags); + + buffer.PutHex32(segment.cmd); + buffer.PutHex32(segment.cmdsize); + buffer.PutRawBytes(segment.segname, sizeof(segment.segname)); + if (addr_byte_size == 8) { + buffer.PutHex64(segment.vmaddr); + buffer.PutHex64(segment.vmsize); + buffer.PutHex64(segment.fileoff); + buffer.PutHex64(segment.filesize); + } else { + buffer.PutHex32(static_cast<uint32_t>(segment.vmaddr)); + buffer.PutHex32(static_cast<uint32_t>(segment.vmsize)); + buffer.PutHex32(static_cast<uint32_t>(segment.fileoff)); + buffer.PutHex32(static_cast<uint32_t>(segment.filesize)); + } + buffer.PutHex32(segment.maxprot); + buffer.PutHex32(segment.initprot); + buffer.PutHex32(segment.nsects); + buffer.PutHex32(segment.flags); + } + + File core_file; + std::string core_file_path(outfile.GetPath()); + error = core_file.Open(core_file_path.c_str(), + File::eOpenOptionWrite | + File::eOpenOptionTruncate | + File::eOpenOptionCanCreate); + if (error.Success()) { + // Read 1 page at a time + uint8_t bytes[0x1000]; + // Write the mach header and load commands out to the core file + size_t bytes_written = buffer.GetString().size(); + error = core_file.Write(buffer.GetString().data(), bytes_written); + if (error.Success()) { + // Now write the file data for all memory segments in the process + for (const auto &segment : segment_load_commands) { + if (core_file.SeekFromStart(segment.fileoff) == -1) { + error.SetErrorStringWithFormat( + "unable to seek to offset 0x%" PRIx64 " in '%s'", + segment.fileoff, core_file_path.c_str()); + break; } - else - { - error.SetErrorString("process doesn't support getting memory region info"); + + printf("Saving %" PRId64 + " bytes of data for memory region at 0x%" PRIx64 "\n", + segment.vmsize, segment.vmaddr); + addr_t bytes_left = segment.vmsize; + addr_t addr = segment.vmaddr; + Error memory_read_error; + while (bytes_left > 0 && error.Success()) { + const size_t bytes_to_read = + bytes_left > sizeof(bytes) ? sizeof(bytes) : bytes_left; + const size_t bytes_read = process_sp->ReadMemory( + addr, bytes, bytes_to_read, memory_read_error); + if (bytes_read == bytes_to_read) { + size_t bytes_written = bytes_read; + error = core_file.Write(bytes, bytes_written); + bytes_left -= bytes_read; + addr += bytes_read; + } else { + // Some pages within regions are not readable, those + // should be zero filled + memset(bytes, 0, bytes_to_read); + size_t bytes_written = bytes_to_read; + error = core_file.Write(bytes, bytes_written); + bytes_left -= bytes_to_read; + addr += bytes_to_read; + } } + } } - return true; // This is the right plug to handle saving core files for this process + } + } else { + error.SetErrorString( + "process doesn't support getting memory region info"); } + } + return true; // This is the right plug to handle saving core files for + // this process } - return false; + } + return false; } |