fis-gtm/sr_x86_64/find_line_call.c

126 lines
4.8 KiB
C

/****************************************************************
* *
* Copyright 2007, 2012 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include <emit_code_sp.h>
#include "xfer_enum.h"
#include "i386.h"
#include <rtnhdr.h> /* Needed by zbreak.h */
#include "zbreak.h"
int inst_size = 0;
/* inst_size is REX + OP_CODE + immed32 used to go past the instruction*/
#define MOV_INTO_ARGREG(call_addr,inst_op) \
( \
(inst_size = 1+1+4) && \
( \
(*(call_addr) == inst_op + I386_REG_RDI) || \
(*(call_addr) == inst_op + I386_REG_RSI) || \
(*(call_addr) == inst_op + I386_REG_RDX) || \
(*(call_addr) == inst_op + I386_REG_RCX) || \
(*(call_addr) == inst_op + I386_REG_R8) || \
(*(call_addr) == inst_op + I386_REG_R9) || \
(*(call_addr) == inst_op + I386_REG_RAX) \
) \
)
/* inst_size is REX + OP_CODE + MODRM + SIB + offset_32/offset_8 used to go past the instruction*/
#define MOV_INTO_STACK(call_addr,inst_op) \
( \
(*(call_addr) == inst_op) && \
(inst_size = 1 + 1 + 1 + 1 + 1) && (temp_modrm_byte.byte = *(call_addr + 1)) && \
(temp_modrm_byte.modrm.r_m == emit_base_info.modrm_byte.modrm.r_m) && \
(temp_modrm_byte.modrm.reg_opcode == emit_base_info.modrm_byte.modrm.reg_opcode) && \
( \
(I386_MOD32_BASE_DISP_8 == temp_modrm_byte.modrm.mod) || \
( (I386_MOD32_BASE_DISP_32 == temp_modrm_byte.modrm.mod) && (inst_size += 3) ) \
) && \
(*(call_addr+2) == emit_base_info.sib_byte.byte) \
)
zb_code *find_line_call(void *addr)
{
unsigned char temp_char, *call_addr;
modrm_byte_type modrm_byte, temp_modrm_byte;
call_addr = (unsigned char *)addr;
modrm_byte.byte = *(call_addr + 1);
if ((I386_INS_Grp5_Prefix == *call_addr) && (I386_INS_CALL_Ev == modrm_byte.modrm.reg_opcode))
{
call_addr++;
assert(I386_REG_EBX == modrm_byte.modrm.r_m);
call_addr++;
if (I386_MOD32_BASE_DISP_32 == modrm_byte.modrm.mod)
{
if ((xf_linestart * SIZEOF(INTPTR_T) == *((int4 *)call_addr)) ||
(xf_zbstart * SIZEOF(INTPTR_T) == *((int4 *)call_addr)))
return (zb_code *)call_addr;
return (zb_code *)addr;
} else if (I386_MOD32_BASE_DISP_8 == modrm_byte.modrm.mod)
{
if ((xf_linestart * SIZEOF(INTPTR_T) == *((char *)call_addr)) ||
(xf_zbstart * SIZEOF(INTPTR_T) == *((char *)call_addr)))
return (zb_code *)call_addr;
call_addr += 1;
}
}
emit_base_offset(I386_REG_SP, 0x12);
emit_base_info.modrm_byte.modrm.reg_opcode = I386_REG_RAX;
inst_size = 0;
if (MOV_INTO_ARGREG(call_addr + 1, I386_INS_MOV_eAX) || MOV_INTO_STACK(call_addr + 1, I386_INS_MOV_Ev_Gv))
{
modrm_byte.byte = *(call_addr + 2);
while (MOV_INTO_ARGREG(call_addr + 1, I386_INS_MOV_eAX) || MOV_INTO_STACK(call_addr + 1, I386_INS_MOV_Ev_Gv))
{
assert((8 == inst_size) || (5 == inst_size) || (6 == inst_size)) ;
call_addr += inst_size ;
inst_size = 0 ;
}
modrm_byte.byte = *(call_addr + 1);
if ((I386_INS_Grp5_Prefix != *call_addr++) || (I386_INS_CALL_Ev != modrm_byte.modrm.reg_opcode))
return (zb_code *)addr;
assert((I386_MOD32_BASE_DISP_8 == modrm_byte.modrm.mod) || (I386_MOD32_BASE_DISP_32 == modrm_byte.modrm.mod));
assert(I386_REG_RBX == modrm_byte.modrm.r_m);
call_addr++;
if (I386_MOD32_BASE_DISP_32 == modrm_byte.modrm.mod)
{
if ((xf_linefetch * SIZEOF(INTPTR_T) != *(int4 *)call_addr) &&
(xf_zbfetch * SIZEOF(INTPTR_T) != *(int4 *)call_addr))
return (zb_code *)addr;
} else if (I386_MOD32_BASE_DISP_8 == modrm_byte.modrm.mod)
{
if ((xf_linefetch * SIZEOF(INTPTR_T) != *(char *)call_addr) &&
(xf_zbfetch * SIZEOF(INTPTR_T) != *(char *)call_addr))
return (zb_code *)addr;
}
} else if ((I386_INS_Grp5_Prefix == *call_addr) && (I386_INS_CALL_Ev == modrm_byte.modrm.reg_opcode))
{
modrm_byte.byte = *(call_addr + 1);
call_addr++;
assert((I386_MOD32_BASE_DISP_8 == modrm_byte.modrm.mod) || (I386_MOD32_BASE_DISP_32 == modrm_byte.modrm.mod));
assert(I386_REG_EBX == modrm_byte.modrm.r_m);
call_addr++;
if (I386_MOD32_BASE_DISP_32 == modrm_byte.modrm.mod)
{
if ((xf_linestart * SIZEOF(INTPTR_T) != *(int4 *)call_addr) &&
(xf_zbstart * SIZEOF(INTPTR_T) != *(int4 *)call_addr))
return (zb_code *)addr;
} else if (I386_MOD32_BASE_DISP_8 == modrm_byte.modrm.mod)
{
if ((xf_linestart * SIZEOF(INTPTR_T) != *(char *)call_addr) &&
(xf_zbstart * SIZEOF(INTPTR_T) != *(char *)call_addr))
return (zb_code *)addr;
}
}
return (zb_code *)call_addr;
}