The err parameter is non-zero if and only if an error occured.
Use this instead of ret == -1 for determining if we need to
update the saved errno.
This fixes the errno setting of SYS_ISTTY, which returns 0 on
error, not -1.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
static void common_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
{
- if (ret == (target_ulong)-1) {
+ if (err) {
#ifdef CONFIG_USER_ONLY
TaskState *ts = cs->opaque;
ts->swi_errno = err;