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Corrected effective address for POP 0x8f. Windows 95 now works on recompiler.

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This commit is contained in:
SarahW 2018-07-18 22:19:09 +01:00
commit 4e7a13f452
1 changed files with 9 additions and 8 deletions
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17
src/codegen.c
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@ -110,7 +110,7 @@ static x86seg *codegen_generate_ea_16_long(ir_data_t *ir, x86seg *op_ea_seg, uin
return op_ea_seg;
}
static x86seg *codegen_generate_ea_32_long(ir_data_t *ir, x86seg *op_ea_seg, uint32_t fetchdat, int op_ssegs, uint32_t *op_pc)
static x86seg *codegen_generate_ea_32_long(ir_data_t *ir, x86seg *op_ea_seg, uint32_t fetchdat, int op_ssegs, uint32_t *op_pc, int stack_offset)
{
uint32_t new_eaaddr;
@ -146,11 +146,12 @@ static x86seg *codegen_generate_ea_32_long(ir_data_t *ir, x86seg *op_ea_seg, uin
(*op_pc) += 4;
break;
}
// if (stack_offset && (sib & 7) == 4 && (cpu_mod || (sib & 7) != 5)) /*ESP*/
// {
if (stack_offset && (sib & 7) == 4 && (cpu_mod || (sib & 7) != 5)) /*ESP*/
{
uop_ADD_IMM(ir, IREG_eaaddr, IREG_eaaddr, stack_offset);
// addbyte(0x05);
// addlong(stack_offset);
// }
}
if (((sib & 7) == 4 || (cpu_mod && (sib & 7) == 5)) && !op_ssegs)
op_ea_seg = &_ss;
if (((sib >> 3) & 7) != 4)
@ -444,10 +445,10 @@ generate_call:
(op_table == x86_dynarec_opcodes && opcode_modrm[opcode]) ||
(op_table == x86_dynarec_opcodes_0f && opcode_0f_modrm[opcode]))
{
//int stack_offset = 0;
int stack_offset = 0;
// if (op_table == x86_dynarec_opcodes && opcode == 0x8f) /*POP*/
// stack_offset = (op_32 & 0x100) ? 4 : 2;
if (op_table == x86_dynarec_opcodes && opcode == 0x8f) /*POP*/
stack_offset = (op_32 & 0x100) ? 4 : 2;
cpu_mod = (fetchdat >> 6) & 3;
cpu_reg = (fetchdat >> 3) & 7;
@ -463,7 +464,7 @@ generate_call:
}
if (cpu_mod != 3 && (op_32 & 0x200))
{
op_ea_seg = codegen_generate_ea_32_long(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc);
op_ea_seg = codegen_generate_ea_32_long(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, stack_offset);
// has_ea = 1;
}
// op_ea_seg = codegen_generate_ea_32_long(op_ea_seg, fetchdat, op_ssegs, &op_pc, stack_offset);