From: Mihail Abakumov <mikhail.abaku...@ispras.ru>
Running Windows with icount causes a crash in instruction of write cr.
This patch fixes it.
Reading and writing cr cause an icount read because there are called
cpu_get_apic_tpr and cpu_set_apic_tpr functions. So, there is need
gen_io_start()/gen_io_end() calls.
Signed-off-by: Mihail Abakumov <mikhail.abaku...@ispras.ru>
Message-Id: <ffb376034ff184f2fcbe93d5317d9...@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
target/i386/translate.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 1d1372fb43..39912f369f 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -7914,14 +7914,26 @@ static target_ulong disas_insn(CPUX86State *env,
DisasContext *s,
gen_update_cc_op(s);
gen_jmp_im(pc_start - s->cs_base);
if (b & 2) {
+ if (s->tb->cflags & CF_USE_ICOUNT) {
+ gen_io_start();
+ }
gen_op_mov_v_reg(ot, cpu_T0, rm);
gen_helper_write_crN(cpu_env, tcg_const_i32(reg),
cpu_T0);
+ if (s->tb->cflags & CF_USE_ICOUNT) {
+ gen_io_end();
+ }
gen_jmp_im(s->pc - s->cs_base);
gen_eob(s);
} else {
+ if (s->tb->cflags & CF_USE_ICOUNT) {
+ gen_io_start();
+ }
gen_helper_read_crN(cpu_T0, cpu_env, tcg_const_i32(reg));
gen_op_mov_reg_v(ot, rm, cpu_T0);
+ if (s->tb->cflags & CF_USE_ICOUNT) {
+ gen_io_end();
+ }
}
break;
default:
--
2.13.0
