Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added recompiled versions of JMP, CALL, RET, PUSH and POP.

Browse source
This commit is contained in:
SarahW 2018-08-05 16:24:15 +01:00
commit f1df9be8f6
33 changed files with 1062 additions and 102 deletions
Download patch file Download diff file Expand all files Collapse all files

207
src/codegen_ops_stack.c Normal file
View file

@ -0,0 +1,207 @@
#include "ibm.h"
#include "x86.h"
#include "386_common.h"
#include "codegen.h"
#include "codegen_ir.h"
#include "codegen_ops.h"
#include "codegen_ops_helpers.h"
#include "codegen_ops_misc.h"
uint32_t ropPUSH_r16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int sp_reg;
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
sp_reg = LOAD_SP_WITH_OFFSET(ir, -2);
uop_MEM_STORE_REG(ir, IREG_SS_base, sp_reg, IREG_16(opcode & 7));
SUB_SP(ir, 2);
return op_pc;
}
uint32_t ropPUSH_r32(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int sp_reg;
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
sp_reg = LOAD_SP_WITH_OFFSET(ir, -4);
uop_MEM_STORE_REG(ir, IREG_SS_base, sp_reg, IREG_32(opcode & 7));
SUB_SP(ir, 4);
return op_pc;
}
uint32_t ropPOP_r16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_16(opcode & 7), IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_eaaddr, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_16(opcode & 7), IREG_SS_base, IREG_eaaddr);
}
if ((opcode & 7) != REG_SP)
ADD_SP(ir, 2);
return op_pc;
}
uint32_t ropPOP_r32(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_32(opcode & 7), IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_eaaddr, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_32(opcode & 7), IREG_SS_base, IREG_eaaddr);
}
if ((opcode & 7) != REG_ESP)
ADD_SP(ir, 4);
return op_pc;
}
uint32_t ropPOP_W(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
if ((fetchdat & 0xc0) == 0xc0)
{
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_16(fetchdat & 7), IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_eaaddr, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_16(fetchdat & 7), IREG_SS_base, IREG_eaaddr);
}
}
else
{
x86seg *target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 2);
codegen_check_seg_write(block, ir, target_seg);
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_temp0, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_temp0);
}
uop_MEM_STORE_REG(ir, ireg_seg_base(target_seg), IREG_eaaddr, IREG_temp0_W);
}
if ((fetchdat & 0xc7) != (0xc0 | REG_SP))
ADD_SP(ir, 2);
return op_pc + 1;
}
uint32_t ropPOP_L(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
if ((fetchdat & 0xc0) == 0xc0)
{
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_32(fetchdat & 7), IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_eaaddr, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_32(fetchdat & 7), IREG_SS_base, IREG_eaaddr);
}
}
else
{
x86seg *target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 4);
codegen_check_seg_write(block, ir, target_seg);
if (stack32)
uop_MEM_LOAD_REG(ir, IREG_temp0, IREG_SS_base, IREG_ESP);
else
{
uop_MOVZX(ir, IREG_temp0, IREG_SP);
uop_MEM_LOAD_REG(ir, IREG_temp0, IREG_SS_base, IREG_temp0);
}
uop_MEM_STORE_REG(ir, ireg_seg_base(target_seg), IREG_eaaddr, IREG_temp0);
}
if ((fetchdat & 0xc7) != (0xc0 | REG_ESP))
ADD_SP(ir, 4);
return op_pc + 1;
}
#define ROP_PUSH_SEG(seg) \
uint32_t ropPUSH_ ## seg ## _16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
int sp_reg; \
\
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
sp_reg = LOAD_SP_WITH_OFFSET(ir, -2); \
uop_MEM_STORE_REG(ir, IREG_SS_base, sp_reg, IREG_ ## seg ## _seg_W); \
SUB_SP(ir, 2); \
\
return op_pc; \
} \
uint32_t ropPUSH_ ## seg ## _32(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
int sp_reg; \
\
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
sp_reg = LOAD_SP_WITH_OFFSET(ir, -4); \
uop_MOVZX(ir, IREG_temp0, IREG_ ## seg ## _seg_W); \
uop_MEM_STORE_REG(ir, IREG_SS_base, sp_reg, IREG_temp0); \
SUB_SP(ir, 4); \
\
return op_pc; \
}
#define ROP_POP_SEG(seg, rseg) \
uint32_t ropPOP_ ## seg ## _16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
\
if (stack32) \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_ESP); \
else \
{ \
uop_MOVZX(ir, IREG_eaaddr, IREG_SP); \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_eaaddr); \
} \
uop_LOAD_SEG(ir, &rseg, IREG_temp0_W); \
ADD_SP(ir, 2); \
\
return op_pc; \
} \
uint32_t ropPOP_ ## seg ## _32(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
\
if (stack32) \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_ESP); \
else \
{ \
uop_MOVZX(ir, IREG_eaaddr, IREG_SP); \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, IREG_SS_base, IREG_eaaddr); \
} \
uop_LOAD_SEG(ir, &rseg, IREG_temp0_W); \
ADD_SP(ir, 4); \
\
return op_pc; \
}
ROP_PUSH_SEG(CS)
ROP_PUSH_SEG(DS)
ROP_PUSH_SEG(ES)
ROP_PUSH_SEG(FS)
ROP_PUSH_SEG(GS)
ROP_PUSH_SEG(SS)
ROP_POP_SEG(DS, cpu_state.seg_ds)
ROP_POP_SEG(ES, cpu_state.seg_es)
ROP_POP_SEG(FS, cpu_state.seg_fs)
ROP_POP_SEG(GS, cpu_state.seg_gs)