libgcc/arc: Update udivmodsi4 and make the lib safe for rf16
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.
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@ -936,6 +936,7 @@ SYM(__divsi3):
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#endif /* L_divsi3 */
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#ifndef __ARC_RF16__
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#ifdef L_umodsi3
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.section .text
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.align 4
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@ -950,6 +951,7 @@ SYM(__umodsi3):
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ENDFUNC(__umodsi3)
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#endif /* L_umodsi3 */
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#endif /* !__ARC_RF16__ */
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#ifdef L_modsi3
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.section .text
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@ -59,7 +59,7 @@ udivmodsi4 (nint32_t num, nint32_t den, word_t modwanted)
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nint32_t bit = 1;
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nint32_t res = 0;
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while (den < num && bit && !(den & (1LL << 63)))
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while (den < num && bit && !(den & (1L << 31)))
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{
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den <<= 1;
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bit <<= 1;
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