diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/mempcpy_chk.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/mempcpy_chk.S | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/sysdeps/x86_64/multiarch/mempcpy_chk.S b/sysdeps/x86_64/multiarch/mempcpy_chk.S index 17b84701b0..6e8a89d38c 100644 --- a/sysdeps/x86_64/multiarch/mempcpy_chk.S +++ b/sysdeps/x86_64/multiarch/mempcpy_chk.S @@ -1,6 +1,6 @@ /* Multiple versions of __mempcpy_chk All versions must be listed in ifunc-impl-list.c. - Copyright (C) 2010-2015 Free Software Foundation, Inc. + Copyright (C) 2010-2016 Free Software Foundation, Inc. Contributed by Intel Corporation. This file is part of the GNU C Library. @@ -29,17 +29,23 @@ .text ENTRY(__mempcpy_chk) .type __mempcpy_chk, @gnu_indirect_function - cmpl $0, KIND_OFFSET+__cpu_features(%rip) - jne 1f - call __init_cpu_features + LOAD_RTLD_GLOBAL_RO_RDX +#ifdef HAVE_AVX512_ASM_SUPPORT + HAS_ARCH_FEATURE (AVX512F_Usable) + jz 1f + HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) + jz 1f + leaq __mempcpy_chk_avx512_no_vzeroupper(%rip), %rax + ret +#endif 1: leaq __mempcpy_chk_sse2(%rip), %rax - testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) + HAS_CPU_FEATURE (SSSE3) jz 2f leaq __mempcpy_chk_ssse3(%rip), %rax - testl $bit_Fast_Copy_Backward, __cpu_features+FEATURE_OFFSET+index_Fast_Copy_Backward(%rip) + HAS_ARCH_FEATURE (Fast_Copy_Backward) jz 2f leaq __mempcpy_chk_ssse3_back(%rip), %rax - testl $bit_AVX_Fast_Unaligned_Load, __cpu_features+FEATURE_OFFSET+index_AVX_Fast_Unaligned_Load(%rip) + HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) jz 2f leaq __mempcpy_chk_avx_unaligned(%rip), %rax 2: ret |