@@ -2596,6 +2596,24 @@ static void bcd_put_digit(ppc_avr_t *bcd, uint8_t digit, int n)
}
}
+static bool bcd_is_valid(ppc_avr_t *bcd)
+{
+ int i;
+ int invalid = 0;
+
+ if (bcd_get_sgn(bcd) == 0) {
+ return false;
+ }
+
+ for (i = 1; i < 32; i++) {
+ bcd_get_digit(bcd, i, &invalid);
+ if (unlikely(invalid)) {
+ return false;
+ }
+ }
+ return true;
+}
+
static int bcd_cmp_zero(ppc_avr_t *bcd)
{
if (bcd->u64[HI_IDX] == 0 && (bcd->u64[LO_IDX] >> 4) == 0) {
@@ -3013,18 +3031,13 @@ uint32_t helper_bcdcpsgn(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps)
uint32_t helper_bcdsetsgn(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps)
{
- int i;
- int invalid = 0;
int sgnb = bcd_get_sgn(b);
*r = *b;
bcd_put_digit(r, bcd_preferred_sgn(sgnb, ps), 0);
- for (i = 1; i < 32; i++) {
- bcd_get_digit(b, i, &invalid);
- if (unlikely(invalid)) {
- return CRF_SO;
- }
+ if (bcd_is_valid(b) == false) {
+ return CRF_SO;
}
return bcd_cmp_zero(r);
A function to check if all digits of a given BCD number is valid is here presented because more instructions will need to reuse the same code. Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> --- target-ppc/int_helper.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-)