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/* Multiple versions of memrchr
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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <init-arch.h>
#ifndef NOT_IN_libc
# define CFI_POP(REG) \
cfi_adjust_cfa_offset (-4); \
cfi_restore (REG)
# define CFI_PUSH(REG) \
cfi_adjust_cfa_offset (4); \
cfi_rel_offset (REG, 0)
.text
ENTRY(__memrchr)
.type __memrchr, @gnu_indirect_function
pushl %ebx
CFI_PUSH (%ebx)
LOAD_PIC_REG(bx)
cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
jne 1f
call __init_cpu_features
1: testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
jz 2f
testl $bit_Slow_BSF, FEATURE_OFFSET+index_Slow_BSF+__cpu_features@GOTOFF(%ebx)
jz 3f
leal __memrchr_sse2@GOTOFF(%ebx), %eax
popl %ebx
CFI_POP (%ebx)
ret
CFI_PUSH (%ebx)
2: leal __memrchr_ia32@GOTOFF(%ebx), %eax
popl %ebx
CFI_POP (%ebx)
ret
CFI_PUSH (%ebx)
3: leal __memrchr_sse2_bsf@GOTOFF(%ebx), %eax
popl %ebx
CFI_POP (%ebx)
ret
END(__memrchr)
weak_alias(__memrchr, memrchr)
#endif
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