diff options
Diffstat (limited to 'source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp')
| -rw-r--r-- | source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp | 1172 |
1 files changed, 559 insertions, 613 deletions
diff --git a/source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp b/source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp index 055905523f81..7e6506bb1f44 100644 --- a/source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp +++ b/source/Plugins/ABI/SysV-s390x/ABISysV_s390x.cpp @@ -37,92 +37,91 @@ using namespace lldb; using namespace lldb_private; -enum dwarf_regnums -{ - // General Purpose Registers - dwarf_r0_s390x = 0, - dwarf_r1_s390x, - dwarf_r2_s390x, - dwarf_r3_s390x, - dwarf_r4_s390x, - dwarf_r5_s390x, - dwarf_r6_s390x, - dwarf_r7_s390x, - dwarf_r8_s390x, - dwarf_r9_s390x, - dwarf_r10_s390x, - dwarf_r11_s390x, - dwarf_r12_s390x, - dwarf_r13_s390x, - dwarf_r14_s390x, - dwarf_r15_s390x, - // Floating Point Registers / Vector Registers 0-15 - dwarf_f0_s390x = 16, - dwarf_f2_s390x, - dwarf_f4_s390x, - dwarf_f6_s390x, - dwarf_f1_s390x, - dwarf_f3_s390x, - dwarf_f5_s390x, - dwarf_f7_s390x, - dwarf_f8_s390x, - dwarf_f10_s390x, - dwarf_f12_s390x, - dwarf_f14_s390x, - dwarf_f9_s390x, - dwarf_f11_s390x, - dwarf_f13_s390x, - dwarf_f15_s390x, - // Access Registers - dwarf_acr0_s390x = 48, - dwarf_acr1_s390x, - dwarf_acr2_s390x, - dwarf_acr3_s390x, - dwarf_acr4_s390x, - dwarf_acr5_s390x, - dwarf_acr6_s390x, - dwarf_acr7_s390x, - dwarf_acr8_s390x, - dwarf_acr9_s390x, - dwarf_acr10_s390x, - dwarf_acr11_s390x, - dwarf_acr12_s390x, - dwarf_acr13_s390x, - dwarf_acr14_s390x, - dwarf_acr15_s390x, - // Program Status Word - dwarf_pswm_s390x = 64, - dwarf_pswa_s390x, - // Vector Registers 16-31 - dwarf_v16_s390x = 68, - dwarf_v18_s390x, - dwarf_v20_s390x, - dwarf_v22_s390x, - dwarf_v17_s390x, - dwarf_v19_s390x, - dwarf_v21_s390x, - dwarf_v23_s390x, - dwarf_v24_s390x, - dwarf_v26_s390x, - dwarf_v28_s390x, - dwarf_v30_s390x, - dwarf_v25_s390x, - dwarf_v27_s390x, - dwarf_v29_s390x, - dwarf_v31_s390x, +enum dwarf_regnums { + // General Purpose Registers + dwarf_r0_s390x = 0, + dwarf_r1_s390x, + dwarf_r2_s390x, + dwarf_r3_s390x, + dwarf_r4_s390x, + dwarf_r5_s390x, + dwarf_r6_s390x, + dwarf_r7_s390x, + dwarf_r8_s390x, + dwarf_r9_s390x, + dwarf_r10_s390x, + dwarf_r11_s390x, + dwarf_r12_s390x, + dwarf_r13_s390x, + dwarf_r14_s390x, + dwarf_r15_s390x, + // Floating Point Registers / Vector Registers 0-15 + dwarf_f0_s390x = 16, + dwarf_f2_s390x, + dwarf_f4_s390x, + dwarf_f6_s390x, + dwarf_f1_s390x, + dwarf_f3_s390x, + dwarf_f5_s390x, + dwarf_f7_s390x, + dwarf_f8_s390x, + dwarf_f10_s390x, + dwarf_f12_s390x, + dwarf_f14_s390x, + dwarf_f9_s390x, + dwarf_f11_s390x, + dwarf_f13_s390x, + dwarf_f15_s390x, + // Access Registers + dwarf_acr0_s390x = 48, + dwarf_acr1_s390x, + dwarf_acr2_s390x, + dwarf_acr3_s390x, + dwarf_acr4_s390x, + dwarf_acr5_s390x, + dwarf_acr6_s390x, + dwarf_acr7_s390x, + dwarf_acr8_s390x, + dwarf_acr9_s390x, + dwarf_acr10_s390x, + dwarf_acr11_s390x, + dwarf_acr12_s390x, + dwarf_acr13_s390x, + dwarf_acr14_s390x, + dwarf_acr15_s390x, + // Program Status Word + dwarf_pswm_s390x = 64, + dwarf_pswa_s390x, + // Vector Registers 16-31 + dwarf_v16_s390x = 68, + dwarf_v18_s390x, + dwarf_v20_s390x, + dwarf_v22_s390x, + dwarf_v17_s390x, + dwarf_v19_s390x, + dwarf_v21_s390x, + dwarf_v23_s390x, + dwarf_v24_s390x, + dwarf_v26_s390x, + dwarf_v28_s390x, + dwarf_v30_s390x, + dwarf_v25_s390x, + dwarf_v27_s390x, + dwarf_v29_s390x, + dwarf_v31_s390x, }; // RegisterKind: EHFrame, DWARF, Generic, Process Plugin, LLDB -#define DEFINE_REG(name, size, alt, generic) \ - { \ - #name, alt, size, 0, eEncodingUint, eFormatHex, \ - { dwarf_##name##_s390x, dwarf_##name##_s390x, generic, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, \ - NULL, NULL, \ - } +#define DEFINE_REG(name, size, alt, generic) \ + { \ + #name, alt, size, 0, eEncodingUint, eFormatHex, \ + {dwarf_##name##_s390x, dwarf_##name##_s390x, generic, \ + LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, \ + nullptr, nullptr, nullptr, 0 \ + } -static RegisterInfo g_register_infos[] = -{ +static RegisterInfo g_register_infos[] = { DEFINE_REG(r0, 8, nullptr, LLDB_INVALID_REGNUM), DEFINE_REG(r1, 8, nullptr, LLDB_INVALID_REGNUM), DEFINE_REG(r2, 8, "arg1", LLDB_REGNUM_GENERIC_ARG1), @@ -175,633 +174,580 @@ static RegisterInfo g_register_infos[] = DEFINE_REG(f15, 8, nullptr, LLDB_INVALID_REGNUM), }; -static const uint32_t k_num_register_infos = llvm::array_lengthof(g_register_infos); +static const uint32_t k_num_register_infos = + llvm::array_lengthof(g_register_infos); static bool g_register_info_names_constified = false; const lldb_private::RegisterInfo * -ABISysV_s390x::GetRegisterInfoArray(uint32_t &count) -{ - // Make the C-string names and alt_names for the register infos into const - // C-string values by having the ConstString unique the names in the global - // constant C-string pool. - if (!g_register_info_names_constified) - { - g_register_info_names_constified = true; - for (uint32_t i = 0; i < k_num_register_infos; ++i) - { - if (g_register_infos[i].name) - g_register_infos[i].name = ConstString(g_register_infos[i].name).GetCString(); - if (g_register_infos[i].alt_name) - g_register_infos[i].alt_name = ConstString(g_register_infos[i].alt_name).GetCString(); - } +ABISysV_s390x::GetRegisterInfoArray(uint32_t &count) { + // Make the C-string names and alt_names for the register infos into const + // C-string values by having the ConstString unique the names in the global + // constant C-string pool. + if (!g_register_info_names_constified) { + g_register_info_names_constified = true; + for (uint32_t i = 0; i < k_num_register_infos; ++i) { + if (g_register_infos[i].name) + g_register_infos[i].name = + ConstString(g_register_infos[i].name).GetCString(); + if (g_register_infos[i].alt_name) + g_register_infos[i].alt_name = + ConstString(g_register_infos[i].alt_name).GetCString(); } - count = k_num_register_infos; - return g_register_infos; + } + count = k_num_register_infos; + return g_register_infos; } -size_t -ABISysV_s390x::GetRedZoneSize() const -{ - return 0; -} +size_t ABISysV_s390x::GetRedZoneSize() const { return 0; } //------------------------------------------------------------------ // Static Functions //------------------------------------------------------------------ ABISP -ABISysV_s390x::CreateInstance(const ArchSpec &arch) -{ - static ABISP g_abi_sp; - if (arch.GetTriple().getArch() == llvm::Triple::systemz) - { - if (!g_abi_sp) - g_abi_sp.reset(new ABISysV_s390x); - return g_abi_sp; - } - return ABISP(); +ABISysV_s390x::CreateInstance(const ArchSpec &arch) { + static ABISP g_abi_sp; + if (arch.GetTriple().getArch() == llvm::Triple::systemz) { + if (!g_abi_sp) + g_abi_sp.reset(new ABISysV_s390x); + return g_abi_sp; + } + return ABISP(); } -bool -ABISysV_s390x::PrepareTrivialCall(Thread &thread, addr_t sp, addr_t func_addr, addr_t return_addr, - llvm::ArrayRef<addr_t> args) const -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); - - if (log) - { - StreamString s; - s.Printf("ABISysV_s390x::PrepareTrivialCall (tid = 0x%" PRIx64 ", sp = 0x%" PRIx64 - ", func_addr = 0x%" PRIx64 ", return_addr = 0x%" PRIx64, - thread.GetID(), (uint64_t)sp, (uint64_t)func_addr, (uint64_t)return_addr); - - for (size_t i = 0; i < args.size(); ++i) - s.Printf(", arg%" PRIu64 " = 0x%" PRIx64, static_cast<uint64_t>(i + 1), args[i]); - s.PutCString(")"); - log->PutCString(s.GetString().c_str()); - } - - RegisterContext *reg_ctx = thread.GetRegisterContext().get(); - if (!reg_ctx) - return false; - - const RegisterInfo *pc_reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); - const RegisterInfo *sp_reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP); - const RegisterInfo *ra_reg_info = reg_ctx->GetRegisterInfoByName("r14", 0); - ProcessSP process_sp(thread.GetProcess()); - - // Allocate a new stack frame and space for stack arguments if necessary - - addr_t arg_pos = 0; - if (args.size() > 5) - { - sp -= 8 * (args.size() - 5); - arg_pos = sp; - } +bool ABISysV_s390x::PrepareTrivialCall(Thread &thread, addr_t sp, + addr_t func_addr, addr_t return_addr, + llvm::ArrayRef<addr_t> args) const { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); - sp -= 160; - - // Process arguments + if (log) { + StreamString s; + s.Printf("ABISysV_s390x::PrepareTrivialCall (tid = 0x%" PRIx64 + ", sp = 0x%" PRIx64 ", func_addr = 0x%" PRIx64 + ", return_addr = 0x%" PRIx64, + thread.GetID(), (uint64_t)sp, (uint64_t)func_addr, + (uint64_t)return_addr); for (size_t i = 0; i < args.size(); ++i) - { - if (i < 5) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + i); - if (log) - log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") into %s", static_cast<uint64_t>(i + 1), - args[i], reg_info->name); - if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i])) - return false; - } - else - { - Error error; - if (log) - log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") onto stack", static_cast<uint64_t>(i + 1), - args[i]); - if (!process_sp->WritePointerToMemory(arg_pos, args[i], error)) - return false; - arg_pos += 8; - } + s.Printf(", arg%" PRIu64 " = 0x%" PRIx64, static_cast<uint64_t>(i + 1), + args[i]); + s.PutCString(")"); + log->PutString(s.GetString()); + } + + RegisterContext *reg_ctx = thread.GetRegisterContext().get(); + if (!reg_ctx) + return false; + + const RegisterInfo *pc_reg_info = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); + const RegisterInfo *sp_reg_info = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP); + const RegisterInfo *ra_reg_info = reg_ctx->GetRegisterInfoByName("r14", 0); + ProcessSP process_sp(thread.GetProcess()); + + // Allocate a new stack frame and space for stack arguments if necessary + + addr_t arg_pos = 0; + if (args.size() > 5) { + sp -= 8 * (args.size() - 5); + arg_pos = sp; + } + + sp -= 160; + + // Process arguments + + for (size_t i = 0; i < args.size(); ++i) { + if (i < 5) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo( + eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + i); + if (log) + log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") into %s", + static_cast<uint64_t>(i + 1), args[i], reg_info->name); + if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i])) + return false; + } else { + Error error; + if (log) + log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") onto stack", + static_cast<uint64_t>(i + 1), args[i]); + if (!process_sp->WritePointerToMemory(arg_pos, args[i], error)) + return false; + arg_pos += 8; } + } - // %r14 is set to the return address + // %r14 is set to the return address - if (log) - log->Printf("Writing RA: 0x%" PRIx64, (uint64_t)return_addr); + if (log) + log->Printf("Writing RA: 0x%" PRIx64, (uint64_t)return_addr); - if (!reg_ctx->WriteRegisterFromUnsigned(ra_reg_info, return_addr)) - return false; + if (!reg_ctx->WriteRegisterFromUnsigned(ra_reg_info, return_addr)) + return false; - // %r15 is set to the actual stack value. + // %r15 is set to the actual stack value. - if (log) - log->Printf("Writing SP: 0x%" PRIx64, (uint64_t)sp); + if (log) + log->Printf("Writing SP: 0x%" PRIx64, (uint64_t)sp); - if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_info, sp)) - return false; + if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_info, sp)) + return false; - // %pc is set to the address of the called function. + // %pc is set to the address of the called function. - if (log) - log->Printf("Writing PC: 0x%" PRIx64, (uint64_t)func_addr); + if (log) + log->Printf("Writing PC: 0x%" PRIx64, (uint64_t)func_addr); - if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_info, func_addr)) - return false; + if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_info, func_addr)) + return false; - return true; + return true; } -static bool -ReadIntegerArgument(Scalar &scalar, unsigned int bit_width, bool is_signed, Thread &thread, - uint32_t *argument_register_ids, unsigned int ¤t_argument_register, - addr_t ¤t_stack_argument) -{ - if (bit_width > 64) - return false; // Scalar can't hold large integer arguments - - if (current_argument_register < 5) - { - scalar = - thread.GetRegisterContext()->ReadRegisterAsUnsigned(argument_register_ids[current_argument_register], 0); - current_argument_register++; - if (is_signed) - scalar.SignExtend(bit_width); - } - else - { - uint32_t byte_size = (bit_width + (8 - 1)) / 8; - Error error; - if (thread.GetProcess()->ReadScalarIntegerFromMemory(current_stack_argument + 8 - byte_size, byte_size, - is_signed, scalar, error)) - { - current_stack_argument += 8; - return true; - } - return false; +static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width, + bool is_signed, Thread &thread, + uint32_t *argument_register_ids, + unsigned int ¤t_argument_register, + addr_t ¤t_stack_argument) { + if (bit_width > 64) + return false; // Scalar can't hold large integer arguments + + if (current_argument_register < 5) { + scalar = thread.GetRegisterContext()->ReadRegisterAsUnsigned( + argument_register_ids[current_argument_register], 0); + current_argument_register++; + if (is_signed) + scalar.SignExtend(bit_width); + } else { + uint32_t byte_size = (bit_width + (8 - 1)) / 8; + Error error; + if (thread.GetProcess()->ReadScalarIntegerFromMemory( + current_stack_argument + 8 - byte_size, byte_size, is_signed, + scalar, error)) { + current_stack_argument += 8; + return true; } - return true; + return false; + } + return true; } -bool -ABISysV_s390x::GetArgumentValues(Thread &thread, ValueList &values) const -{ - unsigned int num_values = values.GetSize(); - unsigned int value_index; +bool ABISysV_s390x::GetArgumentValues(Thread &thread, ValueList &values) const { + unsigned int num_values = values.GetSize(); + unsigned int value_index; - // Extract the register context so we can read arguments from registers + // Extract the register context so we can read arguments from registers - RegisterContext *reg_ctx = thread.GetRegisterContext().get(); + RegisterContext *reg_ctx = thread.GetRegisterContext().get(); - if (!reg_ctx) - return false; + if (!reg_ctx) + return false; - // Get the pointer to the first stack argument so we have a place to start - // when reading data + // Get the pointer to the first stack argument so we have a place to start + // when reading data - addr_t sp = reg_ctx->GetSP(0); + addr_t sp = reg_ctx->GetSP(0); - if (!sp) - return false; + if (!sp) + return false; - addr_t current_stack_argument = sp + 160; - - uint32_t argument_register_ids[5]; - - argument_register_ids[0] = - reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1)->kinds[eRegisterKindLLDB]; - argument_register_ids[1] = - reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG2)->kinds[eRegisterKindLLDB]; - argument_register_ids[2] = - reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG3)->kinds[eRegisterKindLLDB]; - argument_register_ids[3] = - reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG4)->kinds[eRegisterKindLLDB]; - argument_register_ids[4] = - reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG5)->kinds[eRegisterKindLLDB]; - - unsigned int current_argument_register = 0; - - for (value_index = 0; value_index < num_values; ++value_index) - { - Value *value = values.GetValueAtIndex(value_index); - - if (!value) - return false; - - // We currently only support extracting values with Clang QualTypes. - // Do we care about others? - CompilerType compiler_type = value->GetCompilerType(); - if (!compiler_type) - return false; - bool is_signed; - - if (compiler_type.IsIntegerOrEnumerationType(is_signed)) - { - ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread), is_signed, thread, - argument_register_ids, current_argument_register, current_stack_argument); - } - else if (compiler_type.IsPointerType()) - { - ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread), false, thread, - argument_register_ids, current_argument_register, current_stack_argument); - } + addr_t current_stack_argument = sp + 160; + + uint32_t argument_register_ids[5]; + + argument_register_ids[0] = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1) + ->kinds[eRegisterKindLLDB]; + argument_register_ids[1] = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG2) + ->kinds[eRegisterKindLLDB]; + argument_register_ids[2] = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG3) + ->kinds[eRegisterKindLLDB]; + argument_register_ids[3] = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG4) + ->kinds[eRegisterKindLLDB]; + argument_register_ids[4] = + reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG5) + ->kinds[eRegisterKindLLDB]; + + unsigned int current_argument_register = 0; + + for (value_index = 0; value_index < num_values; ++value_index) { + Value *value = values.GetValueAtIndex(value_index); + + if (!value) + return false; + + // We currently only support extracting values with Clang QualTypes. + // Do we care about others? + CompilerType compiler_type = value->GetCompilerType(); + if (!compiler_type) + return false; + bool is_signed; + + if (compiler_type.IsIntegerOrEnumerationType(is_signed)) { + ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread), + is_signed, thread, argument_register_ids, + current_argument_register, current_stack_argument); + } else if (compiler_type.IsPointerType()) { + ReadIntegerArgument(value->GetScalar(), compiler_type.GetBitSize(&thread), + false, thread, argument_register_ids, + current_argument_register, current_stack_argument); } + } - return true; + return true; } -Error -ABISysV_s390x::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp) -{ - Error error; - if (!new_value_sp) - { - error.SetErrorString("Empty value object for return value."); - return error; - } +Error ABISysV_s390x::SetReturnValueObject(lldb::StackFrameSP &frame_sp, + lldb::ValueObjectSP &new_value_sp) { + Error error; + if (!new_value_sp) { + error.SetErrorString("Empty value object for return value."); + return error; + } - CompilerType compiler_type = new_value_sp->GetCompilerType(); - if (!compiler_type) - { - error.SetErrorString("Null clang type for return value."); - return error; - } + CompilerType compiler_type = new_value_sp->GetCompilerType(); + if (!compiler_type) { + error.SetErrorString("Null clang type for return value."); + return error; + } - Thread *thread = frame_sp->GetThread().get(); + Thread *thread = frame_sp->GetThread().get(); - bool is_signed; - uint32_t count; - bool is_complex; + bool is_signed; + uint32_t count; + bool is_complex; - RegisterContext *reg_ctx = thread->GetRegisterContext().get(); + RegisterContext *reg_ctx = thread->GetRegisterContext().get(); - bool set_it_simple = false; - if (compiler_type.IsIntegerOrEnumerationType(is_signed) || compiler_type.IsPointerType()) - { - const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r2", 0); + bool set_it_simple = false; + if (compiler_type.IsIntegerOrEnumerationType(is_signed) || + compiler_type.IsPointerType()) { + const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r2", 0); + DataExtractor data; + Error data_error; + size_t num_bytes = new_value_sp->GetData(data, data_error); + if (data_error.Fail()) { + error.SetErrorStringWithFormat( + "Couldn't convert return value to raw data: %s", + data_error.AsCString()); + return error; + } + lldb::offset_t offset = 0; + if (num_bytes <= 8) { + uint64_t raw_value = data.GetMaxU64(&offset, num_bytes); + + if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value)) + set_it_simple = true; + } else { + error.SetErrorString("We don't support returning longer than 64 bit " + "integer values at present."); + } + } else if (compiler_type.IsFloatingPointType(count, is_complex)) { + if (is_complex) + error.SetErrorString( + "We don't support returning complex values at present"); + else { + size_t bit_width = compiler_type.GetBitSize(frame_sp.get()); + if (bit_width <= 64) { + const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0); + RegisterValue f0_value; DataExtractor data; Error data_error; size_t num_bytes = new_value_sp->GetData(data, data_error); - if (data_error.Fail()) - { - error.SetErrorStringWithFormat("Couldn't convert return value to raw data: %s", data_error.AsCString()); - return error; + if (data_error.Fail()) { + error.SetErrorStringWithFormat( + "Couldn't convert return value to raw data: %s", + data_error.AsCString()); + return error; } - lldb::offset_t offset = 0; - if (num_bytes <= 8) - { - uint64_t raw_value = data.GetMaxU64(&offset, num_bytes); - if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value)) - set_it_simple = true; - } - else - { - error.SetErrorString("We don't support returning longer than 64 bit integer values at present."); - } - } - else if (compiler_type.IsFloatingPointType(count, is_complex)) - { - if (is_complex) - error.SetErrorString("We don't support returning complex values at present"); - else - { - size_t bit_width = compiler_type.GetBitSize(frame_sp.get()); - if (bit_width <= 64) - { - const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0); - RegisterValue f0_value; - DataExtractor data; - Error data_error; - size_t num_bytes = new_value_sp->GetData(data, data_error); - if (data_error.Fail()) - { - error.SetErrorStringWithFormat("Couldn't convert return value to raw data: %s", - data_error.AsCString()); - return error; - } - - unsigned char buffer[8]; - ByteOrder byte_order = data.GetByteOrder(); - - data.CopyByteOrderedData(0, num_bytes, buffer, 8, byte_order); - f0_value.SetBytes(buffer, 8, byte_order); - reg_ctx->WriteRegister(f0_info, f0_value); - set_it_simple = true; - } - else - { - // FIXME - don't know how to do long doubles yet. - error.SetErrorString("We don't support returning float values > 64 bits at present"); - } - } + unsigned char buffer[8]; + ByteOrder byte_order = data.GetByteOrder(); + + data.CopyByteOrderedData(0, num_bytes, buffer, 8, byte_order); + f0_value.SetBytes(buffer, 8, byte_order); + reg_ctx->WriteRegister(f0_info, f0_value); + set_it_simple = true; + } else { + // FIXME - don't know how to do long doubles yet. + error.SetErrorString( + "We don't support returning float values > 64 bits at present"); + } } + } - if (!set_it_simple) - { - // Okay we've got a structure or something that doesn't fit in a simple register. - // We should figure out where it really goes, but we don't support this yet. - error.SetErrorString("We only support setting simple integer and float return types at present."); - } + if (!set_it_simple) { + // Okay we've got a structure or something that doesn't fit in a simple + // register. + // We should figure out where it really goes, but we don't support this yet. + error.SetErrorString("We only support setting simple integer and float " + "return types at present."); + } - return error; + return error; } -ValueObjectSP -ABISysV_s390x::GetReturnValueObjectSimple(Thread &thread, CompilerType &return_compiler_type) const -{ - ValueObjectSP return_valobj_sp; - Value value; - - if (!return_compiler_type) - return return_valobj_sp; - - // value.SetContext (Value::eContextTypeClangType, return_value_type); - value.SetCompilerType(return_compiler_type); - - RegisterContext *reg_ctx = thread.GetRegisterContext().get(); - if (!reg_ctx) - return return_valobj_sp; - - const uint32_t type_flags = return_compiler_type.GetTypeInfo(); - if (type_flags & eTypeIsScalar) - { - value.SetValueType(Value::eValueTypeScalar); - - bool success = false; - if (type_flags & eTypeIsInteger) - { - // Extract the register context so we can read arguments from registers - - const size_t byte_size = return_compiler_type.GetByteSize(nullptr); - uint64_t raw_value = - thread.GetRegisterContext()->ReadRegisterAsUnsigned(reg_ctx->GetRegisterInfoByName("r2", 0), 0); - const bool is_signed = (type_flags & eTypeIsSigned) != 0; - switch (byte_size) - { - default: - break; - - case sizeof(uint64_t): - if (is_signed) - value.GetScalar() = (int64_t)(raw_value); - else - value.GetScalar() = (uint64_t)(raw_value); - success = true; - break; - - case sizeof(uint32_t): - if (is_signed) - value.GetScalar() = (int32_t)(raw_value & UINT32_MAX); - else - value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX); - success = true; - break; - - case sizeof(uint16_t): - if (is_signed) - value.GetScalar() = (int16_t)(raw_value & UINT16_MAX); - else - value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX); - success = true; - break; - - case sizeof(uint8_t): - if (is_signed) - value.GetScalar() = (int8_t)(raw_value & UINT8_MAX); - else - value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX); - success = true; - break; - } - } - else if (type_flags & eTypeIsFloat) - { - if (type_flags & eTypeIsComplex) - { - // Don't handle complex yet. - } - else - { - const size_t byte_size = return_compiler_type.GetByteSize(nullptr); - if (byte_size <= sizeof(long double)) - { - const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0); - RegisterValue f0_value; - if (reg_ctx->ReadRegister(f0_info, f0_value)) - { - DataExtractor data; - if (f0_value.GetData(data)) - { - lldb::offset_t offset = 0; - if (byte_size == sizeof(float)) - { - value.GetScalar() = (float)data.GetFloat(&offset); - success = true; - } - else if (byte_size == sizeof(double)) - { - value.GetScalar() = (double)data.GetDouble(&offset); - success = true; - } - else if (byte_size == sizeof(long double)) - { - // Don't handle long double yet. - } - } - } - } +ValueObjectSP ABISysV_s390x::GetReturnValueObjectSimple( + Thread &thread, CompilerType &return_compiler_type) const { + ValueObjectSP return_valobj_sp; + Value value; + + if (!return_compiler_type) + return return_valobj_sp; + + // value.SetContext (Value::eContextTypeClangType, return_value_type); + value.SetCompilerType(return_compiler_type); + + RegisterContext *reg_ctx = thread.GetRegisterContext().get(); + if (!reg_ctx) + return return_valobj_sp; + + const uint32_t type_flags = return_compiler_type.GetTypeInfo(); + if (type_flags & eTypeIsScalar) { + value.SetValueType(Value::eValueTypeScalar); + + bool success = false; + if (type_flags & eTypeIsInteger) { + // Extract the register context so we can read arguments from registers + + const size_t byte_size = return_compiler_type.GetByteSize(nullptr); + uint64_t raw_value = thread.GetRegisterContext()->ReadRegisterAsUnsigned( + reg_ctx->GetRegisterInfoByName("r2", 0), 0); + const bool is_signed = (type_flags & eTypeIsSigned) != 0; + switch (byte_size) { + default: + break; + + case sizeof(uint64_t): + if (is_signed) + value.GetScalar() = (int64_t)(raw_value); + else + value.GetScalar() = (uint64_t)(raw_value); + success = true; + break; + + case sizeof(uint32_t): + if (is_signed) + value.GetScalar() = (int32_t)(raw_value & UINT32_MAX); + else + value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX); + success = true; + break; + + case sizeof(uint16_t): + if (is_signed) + value.GetScalar() = (int16_t)(raw_value & UINT16_MAX); + else + value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX); + success = true; + break; + + case sizeof(uint8_t): + if (is_signed) + value.GetScalar() = (int8_t)(raw_value & UINT8_MAX); + else + value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX); + success = true; + break; + } + } else if (type_flags & eTypeIsFloat) { + if (type_flags & eTypeIsComplex) { + // Don't handle complex yet. + } else { + const size_t byte_size = return_compiler_type.GetByteSize(nullptr); + if (byte_size <= sizeof(long double)) { + const RegisterInfo *f0_info = reg_ctx->GetRegisterInfoByName("f0", 0); + RegisterValue f0_value; + if (reg_ctx->ReadRegister(f0_info, f0_value)) { + DataExtractor data; + if (f0_value.GetData(data)) { + lldb::offset_t offset = 0; + if (byte_size == sizeof(float)) { + value.GetScalar() = (float)data.GetFloat(&offset); + success = true; + } else if (byte_size == sizeof(double)) { + value.GetScalar() = (double)data.GetDouble(&offset); + success = true; + } else if (byte_size == sizeof(long double)) { + // Don't handle long double yet. + } } + } } - - if (success) - return_valobj_sp = - ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(), value, ConstString("")); - } - else if (type_flags & eTypeIsPointer) - { - unsigned r2_id = reg_ctx->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB]; - value.GetScalar() = (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0); - value.SetValueType(Value::eValueTypeScalar); - return_valobj_sp = ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(), value, ConstString("")); + } } - return return_valobj_sp; + if (success) + return_valobj_sp = ValueObjectConstResult::Create( + thread.GetStackFrameAtIndex(0).get(), value, ConstString("")); + } else if (type_flags & eTypeIsPointer) { + unsigned r2_id = + reg_ctx->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB]; + value.GetScalar() = + (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0); + value.SetValueType(Value::eValueTypeScalar); + return_valobj_sp = ValueObjectConstResult::Create( + thread.GetStackFrameAtIndex(0).get(), value, ConstString("")); + } + + return return_valobj_sp; } -ValueObjectSP -ABISysV_s390x::GetReturnValueObjectImpl(Thread &thread, CompilerType &return_compiler_type) const -{ - ValueObjectSP return_valobj_sp; - - if (!return_compiler_type) - return return_valobj_sp; - - ExecutionContext exe_ctx(thread.shared_from_this()); - return_valobj_sp = GetReturnValueObjectSimple(thread, return_compiler_type); - if (return_valobj_sp) - return return_valobj_sp; - - RegisterContextSP reg_ctx_sp = thread.GetRegisterContext(); - if (!reg_ctx_sp) - return return_valobj_sp; - - if (return_compiler_type.IsAggregateType()) - { - // FIXME: This is just taking a guess, r2 may very well no longer hold the return storage location. - // If we are going to do this right, when we make a new frame we should check to see if it uses a memory - // return, and if we are at the first instruction and if so stash away the return location. Then we would - // only return the memory return value if we know it is valid. - - unsigned r2_id = reg_ctx_sp->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB]; - lldb::addr_t storage_addr = (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0); - return_valobj_sp = ValueObjectMemory::Create(&thread, "", Address(storage_addr, nullptr), return_compiler_type); - } +ValueObjectSP ABISysV_s390x::GetReturnValueObjectImpl( + Thread &thread, CompilerType &return_compiler_type) const { + ValueObjectSP return_valobj_sp; + + if (!return_compiler_type) + return return_valobj_sp; + ExecutionContext exe_ctx(thread.shared_from_this()); + return_valobj_sp = GetReturnValueObjectSimple(thread, return_compiler_type); + if (return_valobj_sp) return return_valobj_sp; + + RegisterContextSP reg_ctx_sp = thread.GetRegisterContext(); + if (!reg_ctx_sp) + return return_valobj_sp; + + if (return_compiler_type.IsAggregateType()) { + // FIXME: This is just taking a guess, r2 may very well no longer hold the + // return storage location. + // If we are going to do this right, when we make a new frame we should + // check to see if it uses a memory + // return, and if we are at the first instruction and if so stash away the + // return location. Then we would + // only return the memory return value if we know it is valid. + + unsigned r2_id = + reg_ctx_sp->GetRegisterInfoByName("r2", 0)->kinds[eRegisterKindLLDB]; + lldb::addr_t storage_addr = + (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(r2_id, 0); + return_valobj_sp = ValueObjectMemory::Create( + &thread, "", Address(storage_addr, nullptr), return_compiler_type); + } + + return return_valobj_sp; } -bool -ABISysV_s390x::CreateFunctionEntryUnwindPlan(UnwindPlan &unwind_plan) -{ - unwind_plan.Clear(); - unwind_plan.SetRegisterKind(eRegisterKindDWARF); +bool ABISysV_s390x::CreateFunctionEntryUnwindPlan(UnwindPlan &unwind_plan) { + unwind_plan.Clear(); + unwind_plan.SetRegisterKind(eRegisterKindDWARF); - UnwindPlan::RowSP row(new UnwindPlan::Row); + UnwindPlan::RowSP row(new UnwindPlan::Row); - // Our Call Frame Address is the stack pointer value + 160 - row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_r15_s390x, 160); + // Our Call Frame Address is the stack pointer value + 160 + row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_r15_s390x, 160); - // The previous PC is in r14 - row->SetRegisterLocationToRegister(dwarf_pswa_s390x, dwarf_r14_s390x, true); + // The previous PC is in r14 + row->SetRegisterLocationToRegister(dwarf_pswa_s390x, dwarf_r14_s390x, true); - // All other registers are the same. - unwind_plan.AppendRow(row); - unwind_plan.SetSourceName("s390x at-func-entry default"); - unwind_plan.SetSourcedFromCompiler(eLazyBoolNo); - return true; + // All other registers are the same. + unwind_plan.AppendRow(row); + unwind_plan.SetSourceName("s390x at-func-entry default"); + unwind_plan.SetSourcedFromCompiler(eLazyBoolNo); + return true; } -bool -ABISysV_s390x::CreateDefaultUnwindPlan(UnwindPlan &unwind_plan) -{ - // There's really no default way to unwind on s390x. - // Trust the .eh_frame CFI, which should always be good. - return false; +bool ABISysV_s390x::CreateDefaultUnwindPlan(UnwindPlan &unwind_plan) { + // There's really no default way to unwind on s390x. + // Trust the .eh_frame CFI, which should always be good. + return false; } -bool -ABISysV_s390x::GetFallbackRegisterLocation (const RegisterInfo *reg_info, - UnwindPlan::Row::RegisterLocation &unwind_regloc) -{ - // If a volatile register is being requested, we don't want to forward the next frame's register contents - // up the stack -- the register is not retrievable at this frame. - if (RegisterIsVolatile(reg_info)) - { - unwind_regloc.SetUndefined(); - return true; - } +bool ABISysV_s390x::GetFallbackRegisterLocation( + const RegisterInfo *reg_info, + UnwindPlan::Row::RegisterLocation &unwind_regloc) { + // If a volatile register is being requested, we don't want to forward the + // next frame's register contents + // up the stack -- the register is not retrievable at this frame. + if (RegisterIsVolatile(reg_info)) { + unwind_regloc.SetUndefined(); + return true; + } - return false; + return false; } -bool -ABISysV_s390x::RegisterIsVolatile(const RegisterInfo *reg_info) -{ - return !RegisterIsCalleeSaved(reg_info); +bool ABISysV_s390x::RegisterIsVolatile(const RegisterInfo *reg_info) { + return !RegisterIsCalleeSaved(reg_info); } -bool -ABISysV_s390x::RegisterIsCalleeSaved(const RegisterInfo *reg_info) -{ - if (reg_info) - { - // Preserved registers are : - // r6-r13, r15 - // f8-f15 - - const char *name = reg_info->name; - if (name[0] == 'r') - { - switch (name[1]) - { - case '6': // r6 - case '7': // r7 - case '8': // r8 - case '9': // r9 - return name[2] == '\0'; - - case '1': // r10, r11, r12, r13, r15 - if ((name[2] >= '0' && name[2] <= '3') || name[2] == '5') - return name[3] == '\0'; - break; - - default: - break; - } - } - if (name[0] == 'f') - { - switch (name[1]) - { - case '8': // r8 - case '9': // r9 - return name[2] == '\0'; - - case '1': // r10, r11, r12, r13, r14, r15 - if (name[2] >= '0' && name[2] <= '5') - return name[3] == '\0'; - break; - - default: - break; - } - } - - // Accept shorter-variant versions - if (name[0] == 's' && name[1] == 'p' && name[2] == '\0') // sp - return true; - if (name[0] == 'f' && name[1] == 'p' && name[2] == '\0') // fp - return true; - if (name[0] == 'p' && name[1] == 'c' && name[2] == '\0') // pc - return true; +bool ABISysV_s390x::RegisterIsCalleeSaved(const RegisterInfo *reg_info) { + if (reg_info) { + // Preserved registers are : + // r6-r13, r15 + // f8-f15 + + const char *name = reg_info->name; + if (name[0] == 'r') { + switch (name[1]) { + case '6': // r6 + case '7': // r7 + case '8': // r8 + case '9': // r9 + return name[2] == '\0'; + + case '1': // r10, r11, r12, r13, r15 + if ((name[2] >= '0' && name[2] <= '3') || name[2] == '5') + return name[3] == '\0'; + break; + + default: + break; + } } - return false; + if (name[0] == 'f') { + switch (name[1]) { + case '8': // r8 + case '9': // r9 + return name[2] == '\0'; + + case '1': // r10, r11, r12, r13, r14, r15 + if (name[2] >= '0' && name[2] <= '5') + return name[3] == '\0'; + break; + + default: + break; + } + } + + // Accept shorter-variant versions + if (name[0] == 's' && name[1] == 'p' && name[2] == '\0') // sp + return true; + if (name[0] == 'f' && name[1] == 'p' && name[2] == '\0') // fp + return true; + if (name[0] == 'p' && name[1] == 'c' && name[2] == '\0') // pc + return true; + } + return false; } -void -ABISysV_s390x::Initialize() -{ - PluginManager::RegisterPlugin(GetPluginNameStatic(), "System V ABI for s390x targets", CreateInstance); +void ABISysV_s390x::Initialize() { + PluginManager::RegisterPlugin( + GetPluginNameStatic(), "System V ABI for s390x targets", CreateInstance); } -void -ABISysV_s390x::Terminate() -{ - PluginManager::UnregisterPlugin(CreateInstance); +void ABISysV_s390x::Terminate() { + PluginManager::UnregisterPlugin(CreateInstance); } -lldb_private::ConstString -ABISysV_s390x::GetPluginNameStatic() -{ - static ConstString g_name("sysv-s390x"); - return g_name; +lldb_private::ConstString ABISysV_s390x::GetPluginNameStatic() { + static ConstString g_name("sysv-s390x"); + return g_name; } //------------------------------------------------------------------ // PluginInterface protocol //------------------------------------------------------------------ -lldb_private::ConstString -ABISysV_s390x::GetPluginName() -{ - return GetPluginNameStatic(); +lldb_private::ConstString ABISysV_s390x::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -ABISysV_s390x::GetPluginVersion() -{ - return 1; -} +uint32_t ABISysV_s390x::GetPluginVersion() { return 1; } |