/* Multiple versions of strchr Copyright (C) 2011-2012 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include #include #ifndef NOT_IN_libc .text ENTRY(strchr) .type strchr, @gnu_indirect_function pushl %ebx cfi_adjust_cfa_offset (4) cfi_rel_offset (ebx, 0) LOAD_PIC_REG(bx) cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) jne 1f call __init_cpu_features 1: leal __strchr_ia32@GOTOFF(%ebx), %eax testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) jz 2f leal __strchr_sse2_bsf@GOTOFF(%ebx), %eax testl $bit_Slow_BSF, FEATURE_OFFSET+index_Slow_BSF+__cpu_features@GOTOFF(%ebx) jz 2f leal __strchr_sse2@GOTOFF(%ebx), %eax 2: popl %ebx cfi_adjust_cfa_offset (-4); cfi_restore (ebx) ret END(strchr) # undef ENTRY # define ENTRY(name) \ .type __strchr_ia32, @function; \ .globl __strchr_ia32; \ .p2align 4; \ __strchr_ia32: cfi_startproc; \ CALL_MCOUNT # undef END # define END(name) \ cfi_endproc; .size __strchr_ia32, .-__strchr_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_strchr; __GI_strchr = __strchr_ia32 #endif #include "../../i586/strchr.S"