projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5fa16e9b | 1 | /* Multiple versions of strcat |
| b090e8ea | 2 | All versions must be listed in ifunc-impl-list.c. |
| b168057a | 3 | Copyright (C) 2011-2015 Free Software Foundation, Inc. |
| 5fa16e9b LD |
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/>. */ | |
| 5fa16e9b LD |
20 | |
| 21 | #include <sysdep.h> | |
| 22 | #include <init-arch.h> | |
| 23 | ||
| 24 | #ifndef USE_AS_STRNCAT | |
| 25 | # ifndef STRCAT | |
| 26 | # define STRCAT strcat | |
| 27 | # endif | |
| 28 | #endif | |
| 29 | ||
| 30 | #ifdef USE_AS_STRNCAT | |
| 31 | # define STRCAT_SSSE3 __strncat_ssse3 | |
| 32 | # define STRCAT_SSE2 __strncat_sse2 | |
| 33 | # define STRCAT_IA32 __strncat_ia32 | |
| 34 | # define __GI_STRCAT __GI_strncat | |
| 35 | #else | |
| 36 | # define STRCAT_SSSE3 __strcat_ssse3 | |
| 37 | # define STRCAT_SSE2 __strcat_sse2 | |
| 38 | # define STRCAT_IA32 __strcat_ia32 | |
| 39 | # define __GI_STRCAT __GI_strcat | |
| 40 | #endif | |
| 41 | ||
| 42 | ||
| 43 | /* Define multiple versions only for the definition in libc. Don't | |
| 44 | define multiple versions for strncat in static library since we | |
| 45 | need strncat before the initialization happened. */ | |
| 4f41c682 | 46 | #if IS_IN (libc) |
| 5fa16e9b LD |
47 | |
| 48 | # ifdef SHARED | |
| 5fa16e9b LD |
49 | .text |
| 50 | ENTRY(STRCAT) | |
| 51 | .type STRCAT, @gnu_indirect_function | |
| 52 | pushl %ebx | |
| 53 | cfi_adjust_cfa_offset (4) | |
| 54 | cfi_rel_offset (ebx, 0) | |
| 9a1d9254 | 55 | LOAD_PIC_REG(bx) |
| 5fa16e9b LD |
56 | cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) |
| 57 | jne 1f | |
| 58 | call __init_cpu_features | |
| 59 | 1: leal STRCAT_IA32@GOTOFF(%ebx), %eax | |
| 60 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) | |
| 61 | jz 2f | |
| 62 | leal STRCAT_SSE2@GOTOFF(%ebx), %eax | |
| 63 | testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx) | |
| 64 | jnz 2f | |
| 65 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx) | |
| 66 | jz 2f | |
| 67 | leal STRCAT_SSSE3@GOTOFF(%ebx), %eax | |
| 68 | 2: popl %ebx | |
| 69 | cfi_adjust_cfa_offset (-4) | |
| 70 | cfi_restore (ebx) | |
| 71 | ret | |
| 72 | END(STRCAT) | |
| 73 | # else | |
| 74 | ||
| 75 | ENTRY(STRCAT) | |
| 76 | .type STRCAT, @gnu_indirect_function | |
| 77 | cmpl $0, KIND_OFFSET+__cpu_features | |
| 78 | jne 1f | |
| 79 | call __init_cpu_features | |
| 80 | 1: leal STRCAT_IA32, %eax | |
| 81 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features | |
| 82 | jz 2f | |
| 83 | leal STRCAT_SSE2, %eax | |
| 84 | testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features | |
| 85 | jnz 2f | |
| 86 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features | |
| 87 | jz 2f | |
| 88 | leal STRCAT_SSSE3, %eax | |
| 89 | 2: ret | |
| 90 | END(STRCAT) | |
| 91 | ||
| 92 | # endif | |
| 93 | ||
| 94 | # undef ENTRY | |
| 95 | # define ENTRY(name) \ | |
| 96 | .type STRCAT_IA32, @function; \ | |
| 97 | .align 16; \ | |
| b090e8ea L |
98 | .globl STRCAT_IA32; \ |
| 99 | .hidden STRCAT_IA32; \ | |
| 5fa16e9b LD |
100 | STRCAT_IA32: cfi_startproc; \ |
| 101 | CALL_MCOUNT | |
| 102 | # undef END | |
| 103 | # define END(name) \ | |
| 104 | cfi_endproc; .size STRCAT_IA32, .-STRCAT_IA32 | |
| 105 | ||
| 106 | # ifdef SHARED | |
| 107 | # undef libc_hidden_builtin_def | |
| 108 | /* It doesn't make sense to send libc-internal strcat calls through a PLT. | |
| 109 | The speedup we get from using SSSE3 instruction is likely eaten away | |
| 110 | by the indirect call in the PLT. */ | |
| 111 | # define libc_hidden_builtin_def(name) \ | |
| 112 | .globl __GI_STRCAT; __GI_STRCAT = STRCAT_IA32 | |
| 113 | # undef libc_hidden_def | |
| 114 | # define libc_hidden_def(name) \ | |
| 115 | .globl __GI___STRCAT; __GI___STRCAT = STRCAT_IA32 | |
| 116 | ||
| 117 | # endif | |
| 118 | #endif | |
| 119 | ||
| 120 | #ifndef USE_AS_STRNCAT | |
| 121 | # include "../../i486/strcat.S" | |
| 122 | #endif |