yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2025-06-01 04:10:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86::trans: handle illegal case for opc c6/c7

Browse source 
Reference Intel software developer manual vol2 Appendix A Table A-6 for
detailed decoding information.

Re-applies commit ad767abda8 from qemu
This commit is contained in:
vardyh 2018-09-07 19:27:49 -04:00 committed by Lioncash
parent 48d98a76e7
commit 8ca718367f
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 9 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
qemu/target/i386/translate.c
View file

@ -6105,12 +6105,21 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
break; break;
case 0xc6: case 0xc6:
case 0xc7: /* mov Ev, Iv */ case 0xc7: /* mov Ev, Iv */
// Unicorn: Altered to handle illegal opcodes
ot = mo_b_d(b, dflag); ot = mo_b_d(b, dflag);
modrm = x86_ldub_code(env, s); modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3; mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
if (mod != 3) { if (mod != 3) {
if (reg != 0) {
goto illegal_op;
}
s->rip_offset = insn_const_size(ot); s->rip_offset = insn_const_size(ot);
gen_lea_modrm(env, s, modrm); gen_lea_modrm(env, s, modrm);
} else {
if (reg != 0 && reg != 7) {
goto illegal_op;
}
} }
val = insn_get(env, s, ot); val = insn_get(env, s, ot);
tcg_gen_movi_tl(tcg_ctx, cpu_T0, val); tcg_gen_movi_tl(tcg_ctx, cpu_T0, val);