mirrors
/
unicorn
mirror of https://github.com/unicorn-engine/unicorn
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Also instrument sub2 

In this case, users don't need to care about the stuble difference inside tcg opcode
This commit is contained in:
lazymio 2021-11-03 23:48:09 +01:00
parent ad2480f32c
commit 3ead1731fe
No known key found for this signature in database
GPG Key ID: DFF27E34A47CB873
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
qemu/tcg/tcg-op.c
View File

@ -894,7 +894,27 @@ void tcg_gen_add2_i32(TCGContext *tcg_ctx, TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 al
void tcg_gen_sub2_i32(TCGContext *tcg_ctx, TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 al,
TCGv_i32 ah, TCGv_i32 bl, TCGv_i32 bh)
{
uc_engine *uc = tcg_ctx->uc;
if (TCG_TARGET_HAS_sub2_i32) {
if (HOOK_EXISTS_BOUNDED(uc, UC_HOOK_TCG_OPCODE, tcg_ctx->pc_start)) {
struct hook *hook;
HOOK_FOREACH_VAR_DECLARE;
HOOK_FOREACH(uc, hook, UC_HOOK_TCG_OPCODE) {
if (hook->to_delete)
continue;
if (hook->op == UC_TCG_OP_SUB && hook->op_flags == 0) {
// Calling tcg_gen_sub_i64 will cause infinite recursion.
TCGv_i64 t0 = tcg_temp_new_i64(tcg_ctx);
TCGv_i64 t1 = tcg_temp_new_i64(tcg_ctx);
tcg_gen_concat_i32_i64(tcg_ctx, t0, al, ah);
tcg_gen_concat_i32_i64(tcg_ctx, t1, bl, bh);
gen_uc_traceopcode(tcg_ctx, hook, t0, t1, uc, tcg_ctx->pc_start);
tcg_temp_free_i64(tcg_ctx, t0);
tcg_temp_free_i64(tcg_ctx, t1);
}
}
}
tcg_gen_op6_i32(tcg_ctx, INDEX_op_sub2_i32, rl, rh, al, ah, bl, bh);
} else {
TCGv_i64 t0 = tcg_temp_new_i64(tcg_ctx);