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LDS/LES/LFS/LGS/LSS: Fix segment wraparounds in 16-bit address mode.

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OBattler
2025-04-07 06:03:19 +02:00
parent 018ff46253
commit 3b5966eb46
15 changed files with 105 additions and 31 deletions
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9
src/codegen_new/codegen_backend_x86-64_uops.c
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@@ -997,8 +997,13 @@ codegen_MEM_LOAD_REG(codeblock_t *block, uop_t *uop)
int dest_size = IREG_GET_SIZE(uop->dest_reg_a_real);
host_x86_LEA_REG_REG(block, REG_ESI, seg_reg, addr_reg);
if (uop->imm_data)
host_x86_ADD32_REG_IMM(block, REG_ESI, uop->imm_data);
if (uop->imm_data) {
if (uop->is_a16) {
host_x86_ADD16_REG_IMM(block, REG_SI, uop->imm_data);
} else {
host_x86_ADD32_REG_IMM(block, REG_ESI, uop->imm_data);
}
}
if (REG_IS_B(dest_size)) {
host_x86_CALL(block, codegen_mem_load_byte);
} else if (REG_IS_W(dest_size)) {