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402bf06952
SSE2 memchr computes "edx + ecx - 16" where ecx is less than 16. Use "edx - (16 - ecx)", instead of satured math, to avoid possible addition overflow. This replaces add %ecx, %edx sbb %eax, %eax or %eax, %edx sub $16, %edx with neg %ecx add $16, %ecx sub %ecx, %edx It is the same for x86_64, except for rcx/rdx, instead of ecx/edx. * sysdeps/i386/i686/multiarch/memchr-sse2.S (MEMCHR): Use "edx + ecx - 16" to avoid possible addition overflow. * sysdeps/x86_64/memchr.S (memchr): Likewise. |
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| .. | ||
| fpu | ||
| multiarch | ||
| nptl | ||
| add_n.S | ||
| bcopy.S | ||
| bzero.S | ||
| dl-hash.h | ||
| ffs.c | ||
| hp-timing.h | ||
| init-arch.h | ||
| Makefile | ||
| memcmp.S | ||
| memcpy.S | ||
| memmove.S | ||
| mempcpy.S | ||
| memset.S | ||
| memusage.h | ||
| pthread_spin_trylock.S | ||
| stack-aliasing.h | ||
| strcmp.S | ||
| tst-stack-align.h | ||