/* multiple version of strnlen All versions must be listed in ifunc-impl-list.c. Copyright (C) 2011-2012 Free Software Foundation, Inc. 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 /* Define multiple versions only for the definition in libc. */ #ifndef NOT_IN_libc .text ENTRY(__strnlen) .type __strnlen, @gnu_indirect_function cmpl $0, __cpu_features+KIND_OFFSET(%rip) jne 1f call __init_cpu_features 1: leaq __strnlen_sse2(%rip), %rax testl $bit_Slow_BSF, __cpu_features+FEATURE_OFFSET+index_Slow_BSF(%rip) jz 2f leaq __strnlen_sse2_no_bsf(%rip), %rax 2: ret END(__strnlen) # undef ENTRY # define ENTRY(name) \ .type __strnlen_sse2, @function; \ .align 16; \ .globl __strnlen_sse2; \ .hidden __strnlen_sse2; \ __strnlen_sse2: cfi_startproc; \ CALL_MCOUNT # undef END # define END(name) \ cfi_endproc; .size __strnlen_sse2, .-__strnlen_sse2 # undef libc_hidden_def # define libc_hidden_def(name) \ .globl __GI_strnlen; __GI_strnlen = __strnlen_sse2 #endif #include "../strnlen.S"