1 /* Multiple versions of rawmemchr
2 Copyright (C) 2011-2012 Free Software Foundation, Inc.
3 Contributed by Intel Corporation.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
21 #include <init-arch.h>
24 # define CFI_POP(REG) \
25 cfi_adjust_cfa_offset (-4); \
28 # define CFI_PUSH(REG) \
29 cfi_adjust_cfa_offset (4); \
30 cfi_rel_offset (REG, 0)
34 .type __rawmemchr, @gnu_indirect_function
38 cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
40 call __init_cpu_features
42 1: testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
44 testl $bit_Slow_BSF, FEATURE_OFFSET+index_Slow_BSF+__cpu_features@GOTOFF(%ebx)
47 leal __rawmemchr_sse2@GOTOFF(%ebx), %eax
54 2: leal __rawmemchr_ia32@GOTOFF(%ebx), %eax
61 3: leal __rawmemchr_sse2_bsf@GOTOFF(%ebx), %eax
67 weak_alias(__rawmemchr, rawmemchr)
70 # define ENTRY(name) \
71 .type __rawmemchr_ia32, @function; \
72 .globl __rawmemchr_ia32; \
74 __rawmemchr_ia32: cfi_startproc; \
78 cfi_endproc; .size __rawmemchr_ia32, .-__rawmemchr_ia32
80 # undef libc_hidden_def
81 /* IFUNC doesn't work with the hidden functions in shared library since
82 they will be called without setting up EBX needed for PLT which is
84 # define libc_hidden_def(name) \
85 .globl __GI___rawmemchr; __GI___rawmemchr = __rawmemchr_ia32
88 #include "../../rawmemchr.S"