projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 06e51c8f | 1 | /* Multiple versions of strspn |
| ac49ecaf | 2 | All versions must be listed in ifunc-impl-list.c. |
| d4697bc9 | 3 | Copyright (C) 2009-2014 Free Software Foundation, Inc. |
| 06e51c8f L |
4 | Contributed by Intel Corporation. |
| 5 | This file is part of the GNU C Library. | |
| 6 | ||
| 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. | |
| 11 | ||
| 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. | |
| 16 | ||
| 17 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
| 19 | <http://www.gnu.org/licenses/>. */ | |
| 06e51c8f L |
20 | |
| 21 | #include <config.h> | |
| 22 | ||
| 23 | #ifdef HAVE_SSE4_SUPPORT | |
| 24 | ||
| 25 | #include <sysdep.h> | |
| 51ddd2c0 | 26 | #include <init-arch.h> |
| 06e51c8f L |
27 | |
| 28 | /* Define multiple versions only for the definition in libc. */ | |
| 29 | #ifndef NOT_IN_libc | |
| 30 | .text | |
| 31 | ENTRY(strspn) | |
| 32 | .type strspn, @gnu_indirect_function | |
| 33 | cmpl $0, __cpu_features+KIND_OFFSET(%rip) | |
| 34 | jne 1f | |
| 35 | call __init_cpu_features | |
| 36 | 1: leaq __strspn_sse2(%rip), %rax | |
| 51ddd2c0 | 37 | testl $bit_SSE4_2, __cpu_features+CPUID_OFFSET+index_SSE4_2(%rip) |
| 06e51c8f L |
38 | jz 2f |
| 39 | leaq __strspn_sse42(%rip), %rax | |
| 40 | 2: ret | |
| 41 | END(strspn) | |
| 42 | ||
| 43 | # undef ENTRY | |
| 44 | # define ENTRY(name) \ | |
| 45 | .type __strspn_sse2, @function; \ | |
| 46 | .globl __strspn_sse2; \ | |
| 47 | .align 16; \ | |
| 48 | __strspn_sse2: cfi_startproc; \ | |
| 49 | CALL_MCOUNT | |
| 50 | # undef END | |
| 51 | # define END(name) \ | |
| 52 | cfi_endproc; .size __strspn_sse2, .-__strspn_sse2 | |
| 53 | # undef libc_hidden_builtin_def | |
| 54 | /* It doesn't make sense to send libc-internal strspn calls through a PLT. | |
| 55 | The speedup we get from using SSE4.2 instruction is likely eaten away | |
| 56 | by the indirect call in the PLT. */ | |
| 57 | # define libc_hidden_builtin_def(name) \ | |
| 58 | .globl __GI_strspn; __GI_strspn = __strspn_sse2 | |
| 59 | #endif | |
| 60 | ||
| 61 | #endif /* HAVE_SSE4_SUPPORT */ | |
| 62 | ||
| 63 | #include "../strspn.S" |