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Add a new hook type UC_HOOK_TCG_OPCODE

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lazymio
2021-11-03 01:46:24 +01:00
parent eb75d459f0
commit bcf85be86d
15 changed files with 241 additions and 2 deletions
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37
qemu/target/i386/translate.c
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@@ -1479,6 +1479,7 @@ static void gen_illegal_opcode(DisasContext *s)
static void gen_op(DisasContext *s1, int op, MemOp ot, int d)
{
TCGContext *tcg_ctx = s1->uc->tcg_ctx;
uc_engine *uc = s1->uc;
if (d != OR_TMP0) {
if (s1->prefix & PREFIX_LOCK) {
@@ -1542,6 +1543,23 @@ static void gen_op(DisasContext *s1, int op, MemOp ot, int d)
tcg_gen_sub_tl(tcg_ctx, s1->T0, s1->T0, s1->T1);
gen_op_st_rm_T0_A0(s1, ot, d);
}
if (HOOK_EXISTS_BOUNDED(uc, UC_HOOK_TCG_OPCODE, s1->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 & UC_TCG_OP_FLAG_DIRECT) ) {
// TCGv is just an offset to tcg_ctx so it's safe to do so.
if ( (hook->op_flags & UC_TCG_OP_FLAG_IMM) && d != OR_EAX) {
continue;
}
gen_uc_traceopcode(tcg_ctx, hook, (TCGv_i64)s1->T0, (TCGv_i64)s1->T1, uc, s1->pc_start);
}
}
}
gen_op_update2_cc(s1);
set_cc_op(s1, CC_OP_SUBB + ot);
break;
@@ -1583,6 +1601,23 @@ static void gen_op(DisasContext *s1, int op, MemOp ot, int d)
tcg_gen_mov_tl(tcg_ctx, tcg_ctx->cpu_cc_src, s1->T1);
tcg_gen_mov_tl(tcg_ctx, s1->cc_srcT, s1->T0);
tcg_gen_sub_tl(tcg_ctx, tcg_ctx->cpu_cc_dst, s1->T0, s1->T1);
if (HOOK_EXISTS_BOUNDED(uc, UC_HOOK_TCG_OPCODE, s1->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 & UC_TCG_OP_FLAG_CMP) ) {
// TCGv is just an offset to tcg_ctx so it's safe to do so.
if ( (hook->op_flags & UC_TCG_OP_FLAG_IMM) && d != OR_EAX) {
continue;
}
gen_uc_traceopcode(tcg_ctx, hook, (TCGv_i64)s1->T0, (TCGv_i64)s1->T1, uc, s1->pc_start);
}
}
}
set_cc_op(s1, CC_OP_SUBB + ot);
break;
}
@@ -4759,7 +4794,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
TCGOp *tcg_op, *prev_op = NULL;
bool insn_hook = false;
s->pc_start = s->pc = pc_start;
s->pc_start = tcg_ctx->pc_start = s->pc = pc_start;
s->prefix = 0;
s->uc = env->uc;