@@ -1433,9 +1433,30 @@ static void gen_op(DisasContext *s1, int op, TCGMemOp ot, int d)
}
}
+static void gen_inc_locked(DisasContext *s1, TCGMemOp ot, int c)
+{
+ TCGv t0;
+
+ t0 = tcg_temp_new();
+ tcg_gen_movi_tl(t0, 1);
+ gen_compute_eflags_c(s1, cpu_cc_src);
+ if (c > 0) {
+ gen_atomic_add_fetch(cpu_T0, cpu_A0, t0, ot);
+ set_cc_op(s1, CC_OP_INCB + ot);
+ } else {
+ gen_atomic_sub_fetch(cpu_T0, cpu_A0, t0, ot);
+ set_cc_op(s1, CC_OP_DECB + ot);
+ }
+ tcg_gen_mov_tl(cpu_cc_dst, cpu_T0);
+ tcg_temp_free(t0);
+}
+
/* if d == OR_TMP0, it means memory operand (address in A0) */
static void gen_inc(DisasContext *s1, TCGMemOp ot, int d, int c)
{
+ if (s1->prefix & PREFIX_LOCK) {
+ return gen_inc_locked(s1, ot, c);
+ }
if (d != OR_TMP0) {
gen_op_mov_v_reg(ot, cpu_T0, d);
} else {
Signed-off-by: Emilio G. Cota <cota@braap.org> --- target-i386/translate.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)