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 CBW, CDQ, CWD, CWDE and MOVSX.

Browse source
This commit is contained in:
SarahW 2018-09-23 21:45:12 +01:00
commit 1aadfd436d
18 changed files with 274 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

67
src/codegen_ops_mov.c
View file

@ -459,6 +459,73 @@ uint32_t ropMOV_seg_w(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_
return op_pc + 1;
}
uint32_t ropMOVSX_16_8(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int dest_reg = (fetchdat >> 3) & 7;
if ((fetchdat & 0xc0) == 0xc0)
{
int src_reg = fetchdat & 7;
uop_MOVSX(ir, IREG_16(dest_reg), IREG_8(src_reg));
}
else
{
x86seg *target_seg;
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 0);
codegen_check_seg_read(block, ir, target_seg);
uop_MEM_LOAD_REG(ir, IREG_temp0_B, ireg_seg_base(target_seg), IREG_eaaddr);
uop_MOVSX(ir, IREG_16(dest_reg), IREG_temp0_B);
}
return op_pc + 1;
}
uint32_t ropMOVSX_32_8(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int dest_reg = (fetchdat >> 3) & 7;
if ((fetchdat & 0xc0) == 0xc0)
{
int src_reg = fetchdat & 7;
uop_MOVSX(ir, IREG_32(dest_reg), IREG_8(src_reg));
}
else
{
x86seg *target_seg;
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 0);
codegen_check_seg_read(block, ir, target_seg);
uop_MEM_LOAD_REG(ir, IREG_temp0_B, ireg_seg_base(target_seg), IREG_eaaddr);
uop_MOVSX(ir, IREG_32(dest_reg), IREG_temp0_B);
}
return op_pc + 1;
}
uint32_t ropMOVSX_32_16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int dest_reg = (fetchdat >> 3) & 7;
if ((fetchdat & 0xc0) == 0xc0)
{
int src_reg = fetchdat & 7;
uop_MOVSX(ir, IREG_32(dest_reg), IREG_16(src_reg));
}
else
{
x86seg *target_seg;
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc);
target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 0);
codegen_check_seg_read(block, ir, target_seg);
uop_MEM_LOAD_REG(ir, IREG_temp0_W, ireg_seg_base(target_seg), IREG_eaaddr);
uop_MOVSX(ir, IREG_32(dest_reg), IREG_temp0_W);
}
return op_pc + 1;
}
uint32_t ropMOVZX_16_8(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
int dest_reg = (fetchdat >> 3) & 7;