1 /* Multiple versions of rawmemchr
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2011-2015 Free Software Foundation, Inc.
4 Contributed by Intel Corporation.
5 This file is part of the GNU C Library.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
22 #include <init-arch.h>
25 # define CFI_POP(REG) \
26 cfi_adjust_cfa_offset (-4); \
29 # define CFI_PUSH(REG) \
30 cfi_adjust_cfa_offset (4); \
31 cfi_rel_offset (REG, 0)
35 .type __rawmemchr, @gnu_indirect_function
39 cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
41 call __init_cpu_features
43 1: testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
45 testl $bit_Slow_BSF, FEATURE_OFFSET+index_Slow_BSF+__cpu_features@GOTOFF(%ebx)
48 leal __rawmemchr_sse2@GOTOFF(%ebx), %eax
55 2: leal __rawmemchr_ia32@GOTOFF(%ebx), %eax
62 3: leal __rawmemchr_sse2_bsf@GOTOFF(%ebx), %eax
68 weak_alias(__rawmemchr, rawmemchr)
71 # define ENTRY(name) \
72 .type __rawmemchr_ia32, @function; \
73 .globl __rawmemchr_ia32; \
75 __rawmemchr_ia32: cfi_startproc; \
79 cfi_endproc; .size __rawmemchr_ia32, .-__rawmemchr_ia32
81 # undef libc_hidden_def
82 /* IFUNC doesn't work with the hidden functions in shared library since
83 they will be called without setting up EBX needed for PLT which is
85 # define libc_hidden_def(name) \
86 .globl __GI___rawmemchr; __GI___rawmemchr = __rawmemchr_ia32
89 #include "../../rawmemchr.S"