RegisterContextWindows_x64.cpp
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//===-- RegisterContextWindows_x64.cpp ------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#if defined(__x86_64__) || defined(_M_X64)
#include "lldb/Host/windows/HostThreadWindows.h"
#include "lldb/Host/windows/windows.h"
#include "lldb/Utility/RegisterValue.h"
#include "lldb/Utility/Status.h"
#include "lldb/lldb-private-types.h"
#include "RegisterContextWindows_x64.h"
#include "Plugins/Process/Utility/RegisterContext_x86.h"
#include "TargetThreadWindows.h"
#include "Plugins/Process/Utility/lldb-x86-register-enums.h"
#include "llvm/ADT/STLExtras.h"
using namespace lldb;
using namespace lldb_private;
#define DEFINE_GPR(reg, alt) #reg, alt, 8, 0, eEncodingUint, eFormatHexUppercase
#define DEFINE_GPR_BIN(reg, alt) #reg, alt, 8, 0, eEncodingUint, eFormatBinary
#define DEFINE_FPU_XMM(reg) \
#reg, NULL, 16, 0, eEncodingUint, eFormatVectorOfUInt64, \
{dwarf_##reg##_x86_64, dwarf_##reg##_x86_64, LLDB_INVALID_REGNUM, \
LLDB_INVALID_REGNUM, lldb_##reg##_x86_64}, \
nullptr, nullptr, nullptr, 0
namespace {
// This enum defines the layout of the global RegisterInfo array. This is
// necessary because lldb register sets are defined in terms of indices into
// the register array. As such, the order of RegisterInfos defined in global
// registers array must match the order defined here. When defining the
// register set layouts, these values can appear in an arbitrary order, and
// that determines the order that register values are displayed in a dump.
enum RegisterIndex {
eRegisterIndexRax,
eRegisterIndexRbx,
eRegisterIndexRcx,
eRegisterIndexRdx,
eRegisterIndexRdi,
eRegisterIndexRsi,
eRegisterIndexRbp,
eRegisterIndexRsp,
eRegisterIndexR8,
eRegisterIndexR9,
eRegisterIndexR10,
eRegisterIndexR11,
eRegisterIndexR12,
eRegisterIndexR13,
eRegisterIndexR14,
eRegisterIndexR15,
eRegisterIndexRip,
eRegisterIndexRflags,
eRegisterIndexXmm0,
eRegisterIndexXmm1,
eRegisterIndexXmm2,
eRegisterIndexXmm3,
eRegisterIndexXmm4,
eRegisterIndexXmm5,
eRegisterIndexXmm6,
eRegisterIndexXmm7,
eRegisterIndexXmm8,
eRegisterIndexXmm9,
eRegisterIndexXmm10,
eRegisterIndexXmm11,
eRegisterIndexXmm12,
eRegisterIndexXmm13,
eRegisterIndexXmm14,
eRegisterIndexXmm15
};
// Array of all register information supported by Windows x86
RegisterInfo g_register_infos[] = {
// Macro auto defines most stuff eh_frame DWARF
// GENERIC
// GDB LLDB VALUE REGS INVALIDATE REGS
// ================================ =========================
// ====================== =========================
// =================== ================= ========== ===============
{DEFINE_GPR(rax, nullptr),
{dwarf_rax_x86_64, dwarf_rax_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_rax_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rbx, nullptr),
{dwarf_rbx_x86_64, dwarf_rbx_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_rbx_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rcx, nullptr),
{dwarf_rcx_x86_64, dwarf_rcx_x86_64, LLDB_REGNUM_GENERIC_ARG1,
LLDB_INVALID_REGNUM, lldb_rcx_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rdx, nullptr),
{dwarf_rdx_x86_64, dwarf_rdx_x86_64, LLDB_REGNUM_GENERIC_ARG2,
LLDB_INVALID_REGNUM, lldb_rdx_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rdi, nullptr),
{dwarf_rdi_x86_64, dwarf_rdi_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_rdi_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rsi, nullptr),
{dwarf_rsi_x86_64, dwarf_rsi_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_rsi_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rbp, "fp"),
{dwarf_rbp_x86_64, dwarf_rbp_x86_64, LLDB_REGNUM_GENERIC_FP,
LLDB_INVALID_REGNUM, lldb_rbp_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rsp, "sp"),
{dwarf_rsp_x86_64, dwarf_rsp_x86_64, LLDB_REGNUM_GENERIC_SP,
LLDB_INVALID_REGNUM, lldb_rsp_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r8, nullptr),
{dwarf_r8_x86_64, dwarf_r8_x86_64, LLDB_REGNUM_GENERIC_ARG3,
LLDB_INVALID_REGNUM, lldb_r8_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r9, nullptr),
{dwarf_r9_x86_64, dwarf_r9_x86_64, LLDB_REGNUM_GENERIC_ARG4,
LLDB_INVALID_REGNUM, lldb_r9_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r10, nullptr),
{dwarf_r10_x86_64, dwarf_r10_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r10_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r11, nullptr),
{dwarf_r11_x86_64, dwarf_r11_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r11_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r12, nullptr),
{dwarf_r12_x86_64, dwarf_r12_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r12_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r13, nullptr),
{dwarf_r13_x86_64, dwarf_r13_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r13_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r14, nullptr),
{dwarf_r14_x86_64, dwarf_r14_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r14_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(r15, nullptr),
{dwarf_r15_x86_64, dwarf_r15_x86_64, LLDB_INVALID_REGNUM,
LLDB_INVALID_REGNUM, lldb_r15_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR(rip, "pc"),
{dwarf_rip_x86_64, dwarf_rip_x86_64, LLDB_REGNUM_GENERIC_PC,
LLDB_INVALID_REGNUM, lldb_rip_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_GPR_BIN(eflags, "flags"),
{LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_REGNUM_GENERIC_FLAGS,
LLDB_INVALID_REGNUM, lldb_rflags_x86_64},
nullptr,
nullptr,
nullptr,
0},
{DEFINE_FPU_XMM(xmm0)},
{DEFINE_FPU_XMM(xmm1)},
{DEFINE_FPU_XMM(xmm2)},
{DEFINE_FPU_XMM(xmm3)},
{DEFINE_FPU_XMM(xmm4)},
{DEFINE_FPU_XMM(xmm5)},
{DEFINE_FPU_XMM(xmm6)},
{DEFINE_FPU_XMM(xmm7)},
{DEFINE_FPU_XMM(xmm8)},
{DEFINE_FPU_XMM(xmm9)},
{DEFINE_FPU_XMM(xmm10)},
{DEFINE_FPU_XMM(xmm11)},
{DEFINE_FPU_XMM(xmm12)},
{DEFINE_FPU_XMM(xmm13)},
{DEFINE_FPU_XMM(xmm14)},
{DEFINE_FPU_XMM(xmm15)}
};
static size_t k_num_register_infos = llvm::array_lengthof(g_register_infos);
// Array of lldb register numbers used to define the set of all General Purpose
// Registers
uint32_t g_gpr_reg_indices[] = {
eRegisterIndexRax, eRegisterIndexRbx, eRegisterIndexRcx,
eRegisterIndexRdx, eRegisterIndexRdi, eRegisterIndexRsi,
eRegisterIndexRbp, eRegisterIndexRsp, eRegisterIndexR8,
eRegisterIndexR9, eRegisterIndexR10, eRegisterIndexR11,
eRegisterIndexR12, eRegisterIndexR13, eRegisterIndexR14,
eRegisterIndexR15, eRegisterIndexRip, eRegisterIndexRflags};
uint32_t g_fpu_reg_indices[] = {
eRegisterIndexXmm0, eRegisterIndexXmm1, eRegisterIndexXmm2,
eRegisterIndexXmm3, eRegisterIndexXmm4, eRegisterIndexXmm5,
eRegisterIndexXmm6, eRegisterIndexXmm7, eRegisterIndexXmm8,
eRegisterIndexXmm9, eRegisterIndexXmm10, eRegisterIndexXmm11,
eRegisterIndexXmm12, eRegisterIndexXmm13, eRegisterIndexXmm14,
eRegisterIndexXmm15
};
RegisterSet g_register_sets[] = {
{"General Purpose Registers", "gpr",
llvm::array_lengthof(g_gpr_reg_indices), g_gpr_reg_indices},
{"Floating Point Registers", "fpu",
llvm::array_lengthof(g_fpu_reg_indices), g_fpu_reg_indices}};
}
// Constructors and Destructors
RegisterContextWindows_x64::RegisterContextWindows_x64(
Thread &thread, uint32_t concrete_frame_idx)
: RegisterContextWindows(thread, concrete_frame_idx) {}
RegisterContextWindows_x64::~RegisterContextWindows_x64() {}
size_t RegisterContextWindows_x64::GetRegisterCount() {
return llvm::array_lengthof(g_register_infos);
}
const RegisterInfo *
RegisterContextWindows_x64::GetRegisterInfoAtIndex(size_t reg) {
if (reg < k_num_register_infos)
return &g_register_infos[reg];
return NULL;
}
size_t RegisterContextWindows_x64::GetRegisterSetCount() {
return llvm::array_lengthof(g_register_sets);
}
const RegisterSet *RegisterContextWindows_x64::GetRegisterSet(size_t reg_set) {
return &g_register_sets[reg_set];
}
bool RegisterContextWindows_x64::ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) {
if (!CacheAllRegisterValues())
return false;
if (reg_info == nullptr)
return false;
const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
switch (reg) {
case lldb_rax_x86_64:
reg_value.SetUInt64(m_context.Rax);
break;
case lldb_rbx_x86_64:
reg_value.SetUInt64(m_context.Rbx);
break;
case lldb_rcx_x86_64:
reg_value.SetUInt64(m_context.Rcx);
break;
case lldb_rdx_x86_64:
reg_value.SetUInt64(m_context.Rdx);
break;
case lldb_rdi_x86_64:
reg_value.SetUInt64(m_context.Rdi);
break;
case lldb_rsi_x86_64:
reg_value.SetUInt64(m_context.Rsi);
break;
case lldb_r8_x86_64:
reg_value.SetUInt64(m_context.R8);
break;
case lldb_r9_x86_64:
reg_value.SetUInt64(m_context.R9);
break;
case lldb_r10_x86_64:
reg_value.SetUInt64(m_context.R10);
break;
case lldb_r11_x86_64:
reg_value.SetUInt64(m_context.R11);
break;
case lldb_r12_x86_64:
reg_value.SetUInt64(m_context.R12);
break;
case lldb_r13_x86_64:
reg_value.SetUInt64(m_context.R13);
break;
case lldb_r14_x86_64:
reg_value.SetUInt64(m_context.R14);
break;
case lldb_r15_x86_64:
reg_value.SetUInt64(m_context.R15);
break;
case lldb_rbp_x86_64:
reg_value.SetUInt64(m_context.Rbp);
break;
case lldb_rsp_x86_64:
reg_value.SetUInt64(m_context.Rsp);
break;
case lldb_rip_x86_64:
reg_value.SetUInt64(m_context.Rip);
break;
case lldb_rflags_x86_64:
reg_value.SetUInt64(m_context.EFlags);
break;
case lldb_xmm0_x86_64:
reg_value.SetBytes(&m_context.Xmm0,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm1_x86_64:
reg_value.SetBytes(&m_context.Xmm1,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm2_x86_64:
reg_value.SetBytes(&m_context.Xmm2,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm3_x86_64:
reg_value.SetBytes(&m_context.Xmm3,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm4_x86_64:
reg_value.SetBytes(&m_context.Xmm4,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm5_x86_64:
reg_value.SetBytes(&m_context.Xmm5,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm6_x86_64:
reg_value.SetBytes(&m_context.Xmm6,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm7_x86_64:
reg_value.SetBytes(&m_context.Xmm7,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm8_x86_64:
reg_value.SetBytes(&m_context.Xmm8,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm9_x86_64:
reg_value.SetBytes(&m_context.Xmm9,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm10_x86_64:
reg_value.SetBytes(&m_context.Xmm10,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm11_x86_64:
reg_value.SetBytes(&m_context.Xmm11,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm12_x86_64:
reg_value.SetBytes(&m_context.Xmm12,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm13_x86_64:
reg_value.SetBytes(&m_context.Xmm13,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm14_x86_64:
reg_value.SetBytes(&m_context.Xmm14,
reg_info->byte_size, endian::InlHostByteOrder());
break;
case lldb_xmm15_x86_64:
reg_value.SetBytes(&m_context.Xmm15,
reg_info->byte_size, endian::InlHostByteOrder());
break;
}
return true;
}
bool RegisterContextWindows_x64::WriteRegister(const RegisterInfo *reg_info,
const RegisterValue ®_value) {
// Since we cannot only write a single register value to the inferior, we
// need to make sure our cached copy of the register values are fresh.
// Otherwise when writing EAX, for example, we may also overwrite some other
// register with a stale value.
if (!CacheAllRegisterValues())
return false;
switch (reg_info->kinds[eRegisterKindLLDB]) {
case lldb_rax_x86_64:
m_context.Rax = reg_value.GetAsUInt64();
break;
case lldb_rbx_x86_64:
m_context.Rbx = reg_value.GetAsUInt64();
break;
case lldb_rcx_x86_64:
m_context.Rcx = reg_value.GetAsUInt64();
break;
case lldb_rdx_x86_64:
m_context.Rdx = reg_value.GetAsUInt64();
break;
case lldb_rdi_x86_64:
m_context.Rdi = reg_value.GetAsUInt64();
break;
case lldb_rsi_x86_64:
m_context.Rsi = reg_value.GetAsUInt64();
break;
case lldb_r8_x86_64:
m_context.R8 = reg_value.GetAsUInt64();
break;
case lldb_r9_x86_64:
m_context.R9 = reg_value.GetAsUInt64();
break;
case lldb_r10_x86_64:
m_context.R10 = reg_value.GetAsUInt64();
break;
case lldb_r11_x86_64:
m_context.R11 = reg_value.GetAsUInt64();
break;
case lldb_r12_x86_64:
m_context.R12 = reg_value.GetAsUInt64();
break;
case lldb_r13_x86_64:
m_context.R13 = reg_value.GetAsUInt64();
break;
case lldb_r14_x86_64:
m_context.R14 = reg_value.GetAsUInt64();
break;
case lldb_r15_x86_64:
m_context.R15 = reg_value.GetAsUInt64();
break;
case lldb_rbp_x86_64:
m_context.Rbp = reg_value.GetAsUInt64();
break;
case lldb_rsp_x86_64:
m_context.Rsp = reg_value.GetAsUInt64();
break;
case lldb_rip_x86_64:
m_context.Rip = reg_value.GetAsUInt64();
break;
case lldb_rflags_x86_64:
m_context.EFlags = reg_value.GetAsUInt64();
break;
case lldb_xmm0_x86_64:
memcpy(&m_context.Xmm0, reg_value.GetBytes(), 16);
break;
case lldb_xmm1_x86_64:
memcpy(&m_context.Xmm1, reg_value.GetBytes(), 16);
break;
case lldb_xmm2_x86_64:
memcpy(&m_context.Xmm2, reg_value.GetBytes(), 16);
break;
case lldb_xmm3_x86_64:
memcpy(&m_context.Xmm3, reg_value.GetBytes(), 16);
break;
case lldb_xmm4_x86_64:
memcpy(&m_context.Xmm4, reg_value.GetBytes(), 16);
break;
case lldb_xmm5_x86_64:
memcpy(&m_context.Xmm5, reg_value.GetBytes(), 16);
break;
case lldb_xmm6_x86_64:
memcpy(&m_context.Xmm6, reg_value.GetBytes(), 16);
break;
case lldb_xmm7_x86_64:
memcpy(&m_context.Xmm7, reg_value.GetBytes(), 16);
break;
case lldb_xmm8_x86_64:
memcpy(&m_context.Xmm8, reg_value.GetBytes(), 16);
break;
case lldb_xmm9_x86_64:
memcpy(&m_context.Xmm9, reg_value.GetBytes(), 16);
break;
case lldb_xmm10_x86_64:
memcpy(&m_context.Xmm10, reg_value.GetBytes(), 16);
break;
case lldb_xmm11_x86_64:
memcpy(&m_context.Xmm11, reg_value.GetBytes(), 16);
break;
case lldb_xmm12_x86_64:
memcpy(&m_context.Xmm12, reg_value.GetBytes(), 16);
break;
case lldb_xmm13_x86_64:
memcpy(&m_context.Xmm13, reg_value.GetBytes(), 16);
break;
case lldb_xmm14_x86_64:
memcpy(&m_context.Xmm14, reg_value.GetBytes(), 16);
break;
case lldb_xmm15_x86_64:
memcpy(&m_context.Xmm15, reg_value.GetBytes(), 16);
break;
}
// Physically update the registers in the target process.
return ApplyAllRegisterValues();
}
#endif // defined(__x86_64__) || defined(_M_X64)