diff options
Diffstat (limited to 'source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp')
-rw-r--r-- | source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp b/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp new file mode 100644 index 000000000000..76e64ac48d66 --- /dev/null +++ b/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp @@ -0,0 +1,483 @@ +//===-- NativeRegisterContextNetBSD_x86_64.cpp ---------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#if defined(__x86_64__) + +#include "NativeRegisterContextNetBSD_x86_64.h" + +#include "lldb/Core/RegisterValue.h" +#include "lldb/Host/HostInfo.h" +#include "lldb/Utility/DataBufferHeap.h" +#include "lldb/Utility/Error.h" +#include "lldb/Utility/Log.h" + +#include "Plugins/Process/Utility/RegisterContextNetBSD_x86_64.h" + +#include <elf.h> + +using namespace lldb_private; +using namespace lldb_private::process_netbsd; + +// ---------------------------------------------------------------------------- +// Private namespace. +// ---------------------------------------------------------------------------- + +namespace { +// x86 64-bit general purpose registers. +static const uint32_t g_gpr_regnums_x86_64[] = { + lldb_rax_x86_64, lldb_rbx_x86_64, lldb_rcx_x86_64, lldb_rdx_x86_64, + lldb_rdi_x86_64, lldb_rsi_x86_64, lldb_rbp_x86_64, lldb_rsp_x86_64, + lldb_r8_x86_64, lldb_r9_x86_64, lldb_r10_x86_64, lldb_r11_x86_64, + lldb_r12_x86_64, lldb_r13_x86_64, lldb_r14_x86_64, lldb_r15_x86_64, + lldb_rip_x86_64, lldb_rflags_x86_64, lldb_cs_x86_64, lldb_fs_x86_64, + lldb_gs_x86_64, lldb_ss_x86_64, lldb_ds_x86_64, lldb_es_x86_64, + lldb_eax_x86_64, lldb_ebx_x86_64, lldb_ecx_x86_64, lldb_edx_x86_64, + lldb_edi_x86_64, lldb_esi_x86_64, lldb_ebp_x86_64, lldb_esp_x86_64, + lldb_r8d_x86_64, // Low 32 bits or r8 + lldb_r9d_x86_64, // Low 32 bits or r9 + lldb_r10d_x86_64, // Low 32 bits or r10 + lldb_r11d_x86_64, // Low 32 bits or r11 + lldb_r12d_x86_64, // Low 32 bits or r12 + lldb_r13d_x86_64, // Low 32 bits or r13 + lldb_r14d_x86_64, // Low 32 bits or r14 + lldb_r15d_x86_64, // Low 32 bits or r15 + lldb_ax_x86_64, lldb_bx_x86_64, lldb_cx_x86_64, lldb_dx_x86_64, + lldb_di_x86_64, lldb_si_x86_64, lldb_bp_x86_64, lldb_sp_x86_64, + lldb_r8w_x86_64, // Low 16 bits or r8 + lldb_r9w_x86_64, // Low 16 bits or r9 + lldb_r10w_x86_64, // Low 16 bits or r10 + lldb_r11w_x86_64, // Low 16 bits or r11 + lldb_r12w_x86_64, // Low 16 bits or r12 + lldb_r13w_x86_64, // Low 16 bits or r13 + lldb_r14w_x86_64, // Low 16 bits or r14 + lldb_r15w_x86_64, // Low 16 bits or r15 + lldb_ah_x86_64, lldb_bh_x86_64, lldb_ch_x86_64, lldb_dh_x86_64, + lldb_al_x86_64, lldb_bl_x86_64, lldb_cl_x86_64, lldb_dl_x86_64, + lldb_dil_x86_64, lldb_sil_x86_64, lldb_bpl_x86_64, lldb_spl_x86_64, + lldb_r8l_x86_64, // Low 8 bits or r8 + lldb_r9l_x86_64, // Low 8 bits or r9 + lldb_r10l_x86_64, // Low 8 bits or r10 + lldb_r11l_x86_64, // Low 8 bits or r11 + lldb_r12l_x86_64, // Low 8 bits or r12 + lldb_r13l_x86_64, // Low 8 bits or r13 + lldb_r14l_x86_64, // Low 8 bits or r14 + lldb_r15l_x86_64, // Low 8 bits or r15 + LLDB_INVALID_REGNUM // register sets need to end with this flag +}; +static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) - + 1 == + k_num_gpr_registers_x86_64, + "g_gpr_regnums_x86_64 has wrong number of register infos"); + +// Number of register sets provided by this context. +enum { k_num_extended_register_sets = 2, k_num_register_sets = 4 }; + +// Register sets for x86 64-bit. +static const RegisterSet g_reg_sets_x86_64[k_num_register_sets] = { + {"General Purpose Registers", "gpr", k_num_gpr_registers_x86_64, + g_gpr_regnums_x86_64}, +}; + +#define REG_CONTEXT_SIZE (GetRegisterInfoInterface().GetGPRSize()) + +} // namespace + +NativeRegisterContextNetBSD * +NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD( + const ArchSpec &target_arch, NativeThreadProtocol &native_thread, + uint32_t concrete_frame_idx) { + return new NativeRegisterContextNetBSD_x86_64(target_arch, native_thread, + concrete_frame_idx); +} + +// ---------------------------------------------------------------------------- +// NativeRegisterContextNetBSD_x86_64 members. +// ---------------------------------------------------------------------------- + +static RegisterInfoInterface * +CreateRegisterInfoInterface(const ArchSpec &target_arch) { + assert((HostInfo::GetArchitecture().GetAddressByteSize() == 8) && + "Register setting path assumes this is a 64-bit host"); + // X86_64 hosts know how to work with 64-bit and 32-bit EXEs using the + // x86_64 register context. + return new RegisterContextNetBSD_x86_64(target_arch); +} + +NativeRegisterContextNetBSD_x86_64::NativeRegisterContextNetBSD_x86_64( + const ArchSpec &target_arch, NativeThreadProtocol &native_thread, + uint32_t concrete_frame_idx) + : NativeRegisterContextNetBSD(native_thread, concrete_frame_idx, + CreateRegisterInfoInterface(target_arch)), + m_gpr_x86_64() {} + +// CONSIDER after local and llgs debugging are merged, register set support can +// be moved into a base x86-64 class with IsRegisterSetAvailable made virtual. +uint32_t NativeRegisterContextNetBSD_x86_64::GetRegisterSetCount() const { + uint32_t sets = 0; + for (uint32_t set_index = 0; set_index < k_num_register_sets; ++set_index) { + if (GetSetForNativeRegNum(set_index) != -1) + ++sets; + } + + return sets; +} + +const RegisterSet * +NativeRegisterContextNetBSD_x86_64::GetRegisterSet(uint32_t set_index) const { + switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) { + case llvm::Triple::x86_64: + return &g_reg_sets_x86_64[set_index]; + default: + assert(false && "Unhandled target architecture."); + return nullptr; + } + + return nullptr; +} + +int NativeRegisterContextNetBSD_x86_64::GetSetForNativeRegNum( + int reg_num) const { + if (reg_num < lldb_fctrl_x86_64) + return GPRegSet; + else + return -1; +} + +int NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(uint32_t set) { + switch (set) { + case GPRegSet: + ReadGPR(); + return 0; + case FPRegSet: + ReadFPR(); + return 0; + default: + break; + } + return -1; +} +int NativeRegisterContextNetBSD_x86_64::WriteRegisterSet(uint32_t set) { + switch (set) { + case GPRegSet: + WriteGPR(); + return 0; + case FPRegSet: + WriteFPR(); + return 0; + default: + break; + } + return -1; +} + +Error NativeRegisterContextNetBSD_x86_64::ReadRegister( + const RegisterInfo *reg_info, RegisterValue ®_value) { + Error error; + + if (!reg_info) { + error.SetErrorString("reg_info NULL"); + return error; + } + + const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB]; + if (reg == LLDB_INVALID_REGNUM) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb " + "register, cannot read directly", + reg_info->name); + return error; + } + + int set = GetSetForNativeRegNum(reg); + if (set == -1) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set", + reg_info->name); + return error; + } + + if (ReadRegisterSet(set) != 0) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat( + "reading register set for register \"%s\" failed", reg_info->name); + return error; + } + + switch (reg) { + case lldb_rax_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RAX]; + break; + case lldb_rbx_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBX]; + break; + case lldb_rcx_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RCX]; + break; + case lldb_rdx_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDX]; + break; + case lldb_rdi_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDI]; + break; + case lldb_rsi_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSI]; + break; + case lldb_rbp_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBP]; + break; + case lldb_rsp_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSP]; + break; + case lldb_r8_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R8]; + break; + case lldb_r9_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R9]; + break; + case lldb_r10_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R10]; + break; + case lldb_r11_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R11]; + break; + case lldb_r12_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R12]; + break; + case lldb_r13_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R13]; + break; + case lldb_r14_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R14]; + break; + case lldb_r15_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R15]; + break; + case lldb_rip_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RIP]; + break; + case lldb_rflags_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RFLAGS]; + break; + case lldb_cs_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_CS]; + break; + case lldb_fs_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_FS]; + break; + case lldb_gs_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_GS]; + break; + case lldb_ss_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_SS]; + break; + case lldb_ds_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_DS]; + break; + case lldb_es_x86_64: + reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_ES]; + break; + } + + return error; +} + +Error NativeRegisterContextNetBSD_x86_64::WriteRegister( + const RegisterInfo *reg_info, const RegisterValue ®_value) { + + Error error; + + if (!reg_info) { + error.SetErrorString("reg_info NULL"); + return error; + } + + const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB]; + if (reg == LLDB_INVALID_REGNUM) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb " + "register, cannot read directly", + reg_info->name); + return error; + } + + int set = GetSetForNativeRegNum(reg); + if (set == -1) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set", + reg_info->name); + return error; + } + + if (ReadRegisterSet(set) != 0) { + // This is likely an internal register for lldb use only and should not be + // directly queried. + error.SetErrorStringWithFormat( + "reading register set for register \"%s\" failed", reg_info->name); + return error; + } + + switch (reg) { + case lldb_rax_x86_64: + m_gpr_x86_64.regs[_REG_RAX] = reg_value.GetAsUInt64(); + break; + case lldb_rbx_x86_64: + m_gpr_x86_64.regs[_REG_RBX] = reg_value.GetAsUInt64(); + break; + case lldb_rcx_x86_64: + m_gpr_x86_64.regs[_REG_RCX] = reg_value.GetAsUInt64(); + break; + case lldb_rdx_x86_64: + m_gpr_x86_64.regs[_REG_RDX] = reg_value.GetAsUInt64(); + break; + case lldb_rdi_x86_64: + m_gpr_x86_64.regs[_REG_RDI] = reg_value.GetAsUInt64(); + break; + case lldb_rsi_x86_64: + m_gpr_x86_64.regs[_REG_RSI] = reg_value.GetAsUInt64(); + break; + case lldb_rbp_x86_64: + m_gpr_x86_64.regs[_REG_RBP] = reg_value.GetAsUInt64(); + break; + case lldb_rsp_x86_64: + m_gpr_x86_64.regs[_REG_RSP] = reg_value.GetAsUInt64(); + break; + case lldb_r8_x86_64: + m_gpr_x86_64.regs[_REG_R8] = reg_value.GetAsUInt64(); + break; + case lldb_r9_x86_64: + m_gpr_x86_64.regs[_REG_R9] = reg_value.GetAsUInt64(); + break; + case lldb_r10_x86_64: + m_gpr_x86_64.regs[_REG_R10] = reg_value.GetAsUInt64(); + break; + case lldb_r11_x86_64: + m_gpr_x86_64.regs[_REG_R11] = reg_value.GetAsUInt64(); + break; + case lldb_r12_x86_64: + m_gpr_x86_64.regs[_REG_R12] = reg_value.GetAsUInt64(); + break; + case lldb_r13_x86_64: + m_gpr_x86_64.regs[_REG_R13] = reg_value.GetAsUInt64(); + break; + case lldb_r14_x86_64: + m_gpr_x86_64.regs[_REG_R14] = reg_value.GetAsUInt64(); + break; + case lldb_r15_x86_64: + m_gpr_x86_64.regs[_REG_R15] = reg_value.GetAsUInt64(); + break; + case lldb_rip_x86_64: + m_gpr_x86_64.regs[_REG_RIP] = reg_value.GetAsUInt64(); + break; + case lldb_rflags_x86_64: + m_gpr_x86_64.regs[_REG_RFLAGS] = reg_value.GetAsUInt64(); + break; + case lldb_cs_x86_64: + m_gpr_x86_64.regs[_REG_CS] = reg_value.GetAsUInt64(); + break; + case lldb_fs_x86_64: + m_gpr_x86_64.regs[_REG_FS] = reg_value.GetAsUInt64(); + break; + case lldb_gs_x86_64: + m_gpr_x86_64.regs[_REG_GS] = reg_value.GetAsUInt64(); + break; + case lldb_ss_x86_64: + m_gpr_x86_64.regs[_REG_SS] = reg_value.GetAsUInt64(); + break; + case lldb_ds_x86_64: + m_gpr_x86_64.regs[_REG_DS] = reg_value.GetAsUInt64(); + break; + case lldb_es_x86_64: + m_gpr_x86_64.regs[_REG_ES] = reg_value.GetAsUInt64(); + break; + } + + if (WriteRegisterSet(set) != 0) + error.SetErrorStringWithFormat("failed to write register set"); + + return error; +} + +Error NativeRegisterContextNetBSD_x86_64::ReadAllRegisterValues( + lldb::DataBufferSP &data_sp) { + Error error; + + data_sp.reset(new DataBufferHeap(REG_CONTEXT_SIZE, 0)); + if (!data_sp) { + error.SetErrorStringWithFormat( + "failed to allocate DataBufferHeap instance of size %" PRIu64, + REG_CONTEXT_SIZE); + return error; + } + + error = ReadGPR(); + if (error.Fail()) + return error; + + uint8_t *dst = data_sp->GetBytes(); + if (dst == nullptr) { + error.SetErrorStringWithFormat("DataBufferHeap instance of size %" PRIu64 + " returned a null pointer", + REG_CONTEXT_SIZE); + return error; + } + + ::memcpy(dst, &m_gpr_x86_64, GetRegisterInfoInterface().GetGPRSize()); + dst += GetRegisterInfoInterface().GetGPRSize(); + + RegisterValue value((uint64_t)-1); + const RegisterInfo *reg_info = + GetRegisterInfoInterface().GetDynamicRegisterInfo("orig_eax"); + if (reg_info == nullptr) + reg_info = GetRegisterInfoInterface().GetDynamicRegisterInfo("orig_rax"); + return error; +} + +Error NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues( + const lldb::DataBufferSP &data_sp) { + Error error; + + if (!data_sp) { + error.SetErrorStringWithFormat( + "NativeRegisterContextNetBSD_x86_64::%s invalid data_sp provided", + __FUNCTION__); + return error; + } + + if (data_sp->GetByteSize() != REG_CONTEXT_SIZE) { + error.SetErrorStringWithFormat( + "NativeRegisterContextNetBSD_x86_64::%s data_sp contained mismatched " + "data size, expected %" PRIu64 ", actual %" PRIu64, + __FUNCTION__, REG_CONTEXT_SIZE, data_sp->GetByteSize()); + return error; + } + + uint8_t *src = data_sp->GetBytes(); + if (src == nullptr) { + error.SetErrorStringWithFormat("NativeRegisterContextNetBSD_x86_64::%s " + "DataBuffer::GetBytes() returned a null " + "pointer", + __FUNCTION__); + return error; + } + ::memcpy(&m_gpr_x86_64, src, GetRegisterInfoInterface().GetGPRSize()); + + error = WriteGPR(); + if (error.Fail()) + return error; + src += GetRegisterInfoInterface().GetGPRSize(); + + return error; +} + +#endif // defined(__x86_64__) |