1 /* Multiple versions of strcspn
2 Copyright (C) 2009 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #ifdef HAVE_SSE4_SUPPORT
26 #include <ifunc-defines.h>
29 #define STRCSPN_SSE42 __strpbrk_sse42
30 #define STRCSPN_IA32 __strpbrk_ia32
31 #define __GI_STRCSPN __GI_strpbrk
34 #define STRCSPN strcspn
35 #define STRCSPN_SSE42 __strcspn_sse42
36 #define STRCSPN_IA32 __strcspn_ia32
37 #define __GI_STRCSPN __GI_strcspn
41 /* Define multiple versions only for the definition in libc. Don't
42 define multiple versions for strpbrk in static library since we
43 need strpbrk before the initialization happened. */
44 #if (defined SHARED || !defined USE_AS_STRPBRK) && !defined NOT_IN_libc
45 .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
46 .globl __i686.get_pc_thunk.bx
47 .hidden __i686.get_pc_thunk.bx
49 .type __i686.get_pc_thunk.bx,@function
50 __i686.get_pc_thunk.bx:
56 .type STRCSPN, @gnu_indirect_function
58 cfi_adjust_cfa_offset (4)
59 cfi_rel_offset (ebx, 0)
60 call __i686.get_pc_thunk.bx
61 addl $_GLOBAL_OFFSET_TABLE_, %ebx
62 cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
64 call __init_cpu_features
65 1: leal STRCSPN_IA32@GOTOFF(%ebx), %eax
66 testl $(1<<20), CPUID_OFFSET+COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET+__cpu_features@GOTOFF(%ebx)
68 leal STRCSPN_SSE42@GOTOFF(%ebx), %eax
70 cfi_adjust_cfa_offset (-4);
76 # define ENTRY(name) \
77 .type STRCSPN_IA32, @function; \
78 .globl STRCSPN_IA32; \
80 STRCSPN_IA32: cfi_startproc; \
84 cfi_endproc; .size STRCSPN_IA32, .-STRCSPN_IA32
85 # undef libc_hidden_builtin_def
86 /* It doesn't make sense to send libc-internal strcspn calls through a PLT.
87 The speedup we get from using SSE4.2 instruction is likely eaten away
88 by the indirect call in the PLT. */
89 # define libc_hidden_builtin_def(name) \
90 .globl __GI_STRCSPN; __GI_STRCSPN = STRCSPN_IA32
93 #endif /* HAVE_SSE4_SUPPORT */
96 #include "../../strpbrk.S"
98 #include "../../strcspn.S"