[committed,2/2] libgcc/arc: Update udivmodsi4 and make the lib safe for rf16
Commit Message
From: Claudiu Zissulescu <claziss@synopsys.com>
The ARC soft udivmodsi4 algorithm and as well as using umodsi3
for reduced register set configurations are wrong.
libgcc/
* config/arc/lib2funcs.c (udivmodsi4): Update AND mask.
* config/arc/lib1funcs.S (umodsi3): Don't use it for RF16
configurations.
---
libgcc/config/arc/lib1funcs.S | 2 ++
libgcc/config/arc/lib2funcs.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
@@ -936,6 +936,7 @@ SYM(__divsi3):
#endif /* L_divsi3 */
+#ifndef __ARC_RF16__
#ifdef L_umodsi3
.section .text
.align 4
@@ -950,6 +951,7 @@ SYM(__umodsi3):
ENDFUNC(__umodsi3)
#endif /* L_umodsi3 */
+#endif /* !__ARC_RF16__ */
#ifdef L_modsi3
.section .text
@@ -59,7 +59,7 @@ udivmodsi4 (nint32_t num, nint32_t den, word_t modwanted)
nint32_t bit = 1;
nint32_t res = 0;
- while (den < num && bit && !(den & (1LL << 63)))
+ while (den < num && bit && !(den & (1L << 31)))
{
den <<= 1;
bit <<= 1;