134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
//===-- RegisterContextLinux_i386.cpp --------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===---------------------------------------------------------------------===//
|
|
|
|
#include "RegisterContextPOSIX_x86.h"
|
|
#include "RegisterContextLinux_i386.h"
|
|
|
|
using namespace lldb_private;
|
|
using namespace lldb;
|
|
|
|
struct GPR
|
|
{
|
|
uint32_t ebx;
|
|
uint32_t ecx;
|
|
uint32_t edx;
|
|
uint32_t esi;
|
|
uint32_t edi;
|
|
uint32_t ebp;
|
|
uint32_t eax;
|
|
uint32_t ds;
|
|
uint32_t es;
|
|
uint32_t fs;
|
|
uint32_t gs;
|
|
uint32_t orig_ax;
|
|
uint32_t eip;
|
|
uint32_t cs;
|
|
uint32_t eflags;
|
|
uint32_t esp;
|
|
uint32_t ss;
|
|
};
|
|
|
|
struct FPR_i386
|
|
{
|
|
uint16_t fctrl; // FPU Control Word (fcw)
|
|
uint16_t fstat; // FPU Status Word (fsw)
|
|
uint16_t ftag; // FPU Tag Word (ftw)
|
|
uint16_t fop; // Last Instruction Opcode (fop)
|
|
union
|
|
{
|
|
struct
|
|
{
|
|
uint64_t fip; // Instruction Pointer
|
|
uint64_t fdp; // Data Pointer
|
|
} x86_64;
|
|
struct
|
|
{
|
|
uint32_t fioff; // FPU IP Offset (fip)
|
|
uint32_t fiseg; // FPU IP Selector (fcs)
|
|
uint32_t fooff; // FPU Operand Pointer Offset (foo)
|
|
uint32_t foseg; // FPU Operand Pointer Selector (fos)
|
|
} i386_;// Added _ in the end to avoid error with gcc defining i386 in some cases
|
|
} ptr;
|
|
uint32_t mxcsr; // MXCSR Register State
|
|
uint32_t mxcsrmask; // MXCSR Mask
|
|
MMSReg stmm[8]; // 8*16 bytes for each FP-reg = 128 bytes
|
|
XMMReg xmm[8]; // 8*16 bytes for each XMM-reg = 128 bytes
|
|
uint32_t padding[56];
|
|
};
|
|
|
|
struct UserArea
|
|
{
|
|
GPR regs; // General purpose registers.
|
|
int32_t fpvalid; // True if FPU is being used.
|
|
FPR_i386 i387; // FPU registers.
|
|
uint32_t tsize; // Text segment size.
|
|
uint32_t dsize; // Data segment size.
|
|
uint32_t ssize; // Stack segment size.
|
|
uint32_t start_code; // VM address of text.
|
|
uint32_t start_stack; // VM address of stack bottom (top in rsp).
|
|
int32_t signal; // Signal causing core dump.
|
|
int32_t reserved; // Unused.
|
|
uint32_t ar0; // Location of GPR's.
|
|
uint32_t fpstate; // Location of FPR's. Should be a FXSTATE *, but this
|
|
// has to be 32-bits even on 64-bit systems.
|
|
uint32_t magic; // Identifier for core dumps.
|
|
char u_comm[32]; // Command causing core dump.
|
|
uint32_t u_debugreg[8]; // Debug registers (DR0 - DR7).
|
|
};
|
|
|
|
#define DR_SIZE sizeof(((UserArea*)NULL)->u_debugreg[0])
|
|
#define DR_0_OFFSET 0xFC
|
|
#define DR_OFFSET(reg_index) \
|
|
(DR_0_OFFSET + (reg_index * 4))
|
|
#define FPR_SIZE(reg) sizeof(((FPR_i386*)NULL)->reg)
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Include RegisterInfos_i386 to declare our g_register_infos_i386 structure.
|
|
//---------------------------------------------------------------------------
|
|
#define DECLARE_REGISTER_INFOS_I386_STRUCT
|
|
#include "RegisterInfos_i386.h"
|
|
#undef DECLARE_REGISTER_INFOS_I386_STRUCT
|
|
|
|
RegisterContextLinux_i386::RegisterContextLinux_i386(const ArchSpec &target_arch) :
|
|
RegisterInfoInterface(target_arch)
|
|
{
|
|
}
|
|
|
|
size_t
|
|
RegisterContextLinux_i386::GetGPRSize() const
|
|
{
|
|
return sizeof(GPR);
|
|
}
|
|
|
|
const RegisterInfo *
|
|
RegisterContextLinux_i386::GetRegisterInfo() const
|
|
{
|
|
switch (m_target_arch.GetMachine())
|
|
{
|
|
case llvm::Triple::x86:
|
|
case llvm::Triple::x86_64:
|
|
return g_register_infos_i386;
|
|
default:
|
|
assert(false && "Unhandled target architecture.");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
RegisterContextLinux_i386::GetRegisterCount () const
|
|
{
|
|
return static_cast<uint32_t> (sizeof (g_register_infos_i386) / sizeof (g_register_infos_i386 [0]));
|
|
}
|
|
|
|
uint32_t
|
|
RegisterContextLinux_i386::GetUserRegisterCount () const
|
|
{
|
|
return static_cast<uint32_t> (k_num_user_registers_i386);
|
|
}
|