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//===-- RegisterContextWindows_x86.cpp --------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/lldb-private-types.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Host/windows/HostThreadWindows.h"
#include "lldb/Host/windows/windows.h"
#include "lldb-x86-register-enums.h"
#include "ProcessWindowsLog.h"
#include "RegisterContext_x86.h"
#include "RegisterContextWindows_x86.h"
#include "llvm/ADT/STLExtras.h"
using namespace lldb;
using namespace lldb_private;
#define DEFINE_GPR(reg, alt) #reg, alt, 4, 0, eEncodingUint, eFormatHexUppercase
#define DEFINE_GPR_BIN(reg, alt) #reg, alt, 4, 0, eEncodingUint, eFormatBinary
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
{
eRegisterIndexEax,
eRegisterIndexEbx,
eRegisterIndexEcx,
eRegisterIndexEdx,
eRegisterIndexEdi,
eRegisterIndexEsi,
eRegisterIndexEbp,
eRegisterIndexEsp,
eRegisterIndexEip,
eRegisterIndexEflags
};
// 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(eax, nullptr), { ehframe_eax_i386, dwarf_eax_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_eax_i386 }, nullptr, nullptr},
{ DEFINE_GPR(ebx, nullptr), { ehframe_ebx_i386, dwarf_ebx_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_ebx_i386 }, nullptr, nullptr},
{ DEFINE_GPR(ecx, nullptr), { ehframe_ecx_i386, dwarf_ecx_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_ecx_i386 }, nullptr, nullptr},
{ DEFINE_GPR(edx, nullptr), { ehframe_edx_i386, dwarf_edx_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_edx_i386 }, nullptr, nullptr},
{ DEFINE_GPR(edi, nullptr), { ehframe_edi_i386, dwarf_edi_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_edi_i386 }, nullptr, nullptr},
{ DEFINE_GPR(esi, nullptr), { ehframe_esi_i386, dwarf_esi_i386, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, lldb_esi_i386 }, nullptr, nullptr},
{ DEFINE_GPR(ebp, "fp"), { ehframe_ebp_i386, dwarf_ebp_i386, LLDB_REGNUM_GENERIC_FP, LLDB_INVALID_REGNUM, lldb_ebp_i386 }, nullptr, nullptr},
{ DEFINE_GPR(esp, "sp"), { ehframe_esp_i386, dwarf_esp_i386, LLDB_REGNUM_GENERIC_SP, LLDB_INVALID_REGNUM, lldb_esp_i386 }, nullptr, nullptr},
{ DEFINE_GPR(eip, "pc"), { ehframe_eip_i386, dwarf_eip_i386, LLDB_REGNUM_GENERIC_PC, LLDB_INVALID_REGNUM, lldb_eip_i386 }, nullptr, nullptr},
{ DEFINE_GPR_BIN(eflags, "flags"), { ehframe_eflags_i386, dwarf_eflags_i386, LLDB_REGNUM_GENERIC_FLAGS, LLDB_INVALID_REGNUM, lldb_eflags_i386}, nullptr, nullptr},
};
// Array of lldb register numbers used to define the set of all General Purpose Registers
uint32_t g_gpr_reg_indices[] =
{
eRegisterIndexEax,
eRegisterIndexEbx,
eRegisterIndexEcx,
eRegisterIndexEdx,
eRegisterIndexEdi,
eRegisterIndexEsi,
eRegisterIndexEbp,
eRegisterIndexEsp,
eRegisterIndexEip,
eRegisterIndexEflags
};
RegisterSet g_register_sets[] = {
{"General Purpose Registers", "gpr", llvm::array_lengthof(g_gpr_reg_indices), g_gpr_reg_indices},
};
}
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
RegisterContextWindows_x86::RegisterContextWindows_x86(Thread &thread, uint32_t concrete_frame_idx)
: RegisterContextWindows(thread, concrete_frame_idx)
{
}
RegisterContextWindows_x86::~RegisterContextWindows_x86()
{
}
size_t
RegisterContextWindows_x86::GetRegisterCount()
{
return llvm::array_lengthof(g_register_infos);
}
const RegisterInfo *
RegisterContextWindows_x86::GetRegisterInfoAtIndex(size_t reg)
{
return &g_register_infos[reg];
}
size_t
RegisterContextWindows_x86::GetRegisterSetCount()
{
return llvm::array_lengthof(g_register_sets);
}
const RegisterSet *
RegisterContextWindows_x86::GetRegisterSet(size_t reg_set)
{
return &g_register_sets[reg_set];
}
bool
RegisterContextWindows_x86::ReadRegister(const RegisterInfo *reg_info, RegisterValue ®_value)
{
if (!CacheAllRegisterValues())
return false;
uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
switch (reg)
{
case lldb_eax_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EAX", m_context.Eax);
reg_value.SetUInt32(m_context.Eax);
break;
case lldb_ebx_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EBX", m_context.Ebx);
reg_value.SetUInt32(m_context.Ebx);
break;
case lldb_ecx_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from ECX", m_context.Ecx);
reg_value.SetUInt32(m_context.Ecx);
break;
case lldb_edx_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EDX", m_context.Edx);
reg_value.SetUInt32(m_context.Edx);
break;
case lldb_edi_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EDI", m_context.Edi);
reg_value.SetUInt32(m_context.Edi);
break;
case lldb_esi_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from ESI", m_context.Esi);
reg_value.SetUInt32(m_context.Esi);
break;
case lldb_ebp_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EBP", m_context.Ebp);
reg_value.SetUInt32(m_context.Ebp);
break;
case lldb_esp_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from ESP", m_context.Esp);
reg_value.SetUInt32(m_context.Esp);
break;
case lldb_eip_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EIP", m_context.Eip);
reg_value.SetUInt32(m_context.Eip);
break;
case lldb_eflags_i386:
WINLOG_IFALL(WINDOWS_LOG_REGISTERS, "Read value 0x%x from EFLAGS", m_context.EFlags);
reg_value.SetUInt32(m_context.EFlags);
break;
default:
WINWARN_IFALL(WINDOWS_LOG_REGISTERS, "Requested unknown register %u", reg);
break;
}
return true;
}
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