/* Multiple versions of memchr All versions must be listed in ifunc-impl-list.c. Copyright (C) 2011-2016 Free Software Foundation, Inc. Contributed by Intel Corporation. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include #if IS_IN (libc) .text ENTRY(__memchr) .type __memchr, @gnu_indirect_function LOAD_GOT_AND_RTLD_GLOBAL_RO HAS_CPU_FEATURE (SSE2) jz 2f HAS_ARCH_FEATURE (Slow_BSF) jz 3f LOAD_FUNC_GOT_EAX ( __memchr_sse2) ret 2: LOAD_FUNC_GOT_EAX (__memchr_ia32) ret 3: LOAD_FUNC_GOT_EAX (__memchr_sse2_bsf) ret END(__memchr) weak_alias(__memchr, memchr) # undef ENTRY # define ENTRY(name) \ .type __memchr_ia32, @function; \ .globl __memchr_ia32; \ .p2align 4; \ __memchr_ia32: cfi_startproc; \ CALL_MCOUNT # undef END # define END(name) \ cfi_endproc; .size __memchr_ia32, .-__memchr_ia32 # undef libc_hidden_builtin_def /* IFUNC doesn't work with the hidden functions in shared library since they will be called without setting up EBX needed for PLT which is used by IFUNC. */ # define libc_hidden_builtin_def(name) \ .globl __GI_memchr; __GI_memchr = __memchr_ia32 #endif #include "../../memchr.S"