2011-09-05 21:11:11 +00:00
|
|
|
/* Multiple versions of strrchr
|
2012-10-10 14:48:45 +00:00
|
|
|
All versions must be listed in ifunc-impl-list.c.
|
2013-01-02 19:01:50 +00:00
|
|
|
Copyright (C) 2011-2013 Free Software Foundation, Inc.
|
2011-09-05 21:11:11 +00:00
|
|
|
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
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
2011-09-05 21:11:11 +00:00
|
|
|
|
|
|
|
#include <sysdep.h>
|
|
|
|
#include <init-arch.h>
|
|
|
|
|
|
|
|
#ifndef NOT_IN_libc
|
|
|
|
.text
|
|
|
|
ENTRY(strrchr)
|
|
|
|
.type strrchr, @gnu_indirect_function
|
|
|
|
pushl %ebx
|
|
|
|
cfi_adjust_cfa_offset (4)
|
|
|
|
cfi_rel_offset (ebx, 0)
|
2012-02-03 23:22:53 +00:00
|
|
|
LOAD_PIC_REG(bx)
|
2011-09-05 21:11:11 +00:00
|
|
|
cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
|
|
|
|
jne 1f
|
|
|
|
call __init_cpu_features
|
|
|
|
1: leal __strrchr_ia32@GOTOFF(%ebx), %eax
|
|
|
|
testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
|
|
|
|
jz 2f
|
|
|
|
leal __strrchr_sse2_bsf@GOTOFF(%ebx), %eax
|
|
|
|
testl $bit_Slow_BSF, FEATURE_OFFSET+index_Slow_BSF+__cpu_features@GOTOFF(%ebx)
|
|
|
|
jz 2f
|
|
|
|
leal __strrchr_sse2@GOTOFF(%ebx), %eax
|
|
|
|
2: popl %ebx
|
|
|
|
cfi_adjust_cfa_offset (-4);
|
|
|
|
cfi_restore (ebx)
|
|
|
|
ret
|
|
|
|
END(strrchr)
|
|
|
|
|
|
|
|
# undef ENTRY
|
|
|
|
# define ENTRY(name) \
|
|
|
|
.type __strrchr_ia32, @function; \
|
|
|
|
.globl __strrchr_ia32; \
|
|
|
|
.p2align 4; \
|
|
|
|
__strrchr_ia32: cfi_startproc; \
|
|
|
|
CALL_MCOUNT
|
|
|
|
# undef END
|
|
|
|
# define END(name) \
|
|
|
|
cfi_endproc; .size __strrchr_ia32, .-__strrchr_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_strrchr; __GI_strrchr = __strrchr_ia32
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include "../../strrchr.S"
|