The signed integer division -0x8000_0000_0000_0000 / -1 must be handled
separately to avoid an overflow on the QEMU host.
Negative overflow must be a negative number for correct sign
extension in Sparc64 mode. Use <stdint.h> constants.
Signed-off-by: Olivier Danet <odanet@caramail.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
}
x0 = x0 / x1;
- if (x0 > 0xffffffff) {
- x0 = 0xffffffff;
+ if (x0 > UINT32_MAX) {
+ x0 = UINT32_MAX;
overflow = 1;
}
if (x1 == 0) {
cpu_restore_state(CPU(cpu), GETPC());
helper_raise_exception(env, TT_DIV_ZERO);
- }
-
- x0 = x0 / x1;
- if ((int32_t) x0 != x0) {
- x0 = x0 < 0 ? 0x80000000 : 0x7fffffff;
+ } else if (x1 == -1 && x0 == INT64_MIN) {
+ x0 = INT32_MAX;
overflow = 1;
+ } else {
+ x0 = x0 / x1;
+ if ((int32_t) x0 != x0) {
+ x0 = x0 < 0 ? INT32_MIN : INT32_MAX;
+ overflow = 1;
+ }
}
if (cc) {