git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0b1cbaae | 1 | /* Multiple versions of strcpy |
| b090e8ea | 2 | All versions must be listed in ifunc-impl-list.c. |
| b168057a | 3 | Copyright (C) 2011-2015 Free Software Foundation, Inc. |
| 0b1cbaae 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/>. */ | |
| 0b1cbaae L |
20 | |
| 21 | #include <sysdep.h> | |
| 22 | #include <init-arch.h> | |
| 23 | ||
| 24 | #if !defined (USE_AS_STPCPY) && !defined (USE_AS_STRNCPY) | |
| 25 | # ifndef STRCPY | |
| 26 | # define STRCPY strcpy | |
| 27 | # endif | |
| 28 | #endif | |
| 29 | ||
| 30 | #ifdef USE_AS_STPCPY | |
| 31 | # ifdef USE_AS_STRNCPY | |
| 32 | # define STRCPY_SSSE3 __stpncpy_ssse3 | |
| 33 | # define STRCPY_SSE2 __stpncpy_sse2 | |
| 34 | # define STRCPY_IA32 __stpncpy_ia32 | |
| 35 | # define __GI_STRCPY __GI_stpncpy | |
| 36 | # define __GI___STRCPY __GI___stpncpy | |
| 37 | # else | |
| 38 | # define STRCPY_SSSE3 __stpcpy_ssse3 | |
| 39 | # define STRCPY_SSE2 __stpcpy_sse2 | |
| 40 | # define STRCPY_IA32 __stpcpy_ia32 | |
| 41 | # define __GI_STRCPY __GI_stpcpy | |
| 42 | # define __GI___STRCPY __GI___stpcpy | |
| 43 | # endif | |
| 44 | #else | |
| 45 | # ifdef USE_AS_STRNCPY | |
| 46 | # define STRCPY_SSSE3 __strncpy_ssse3 | |
| 47 | # define STRCPY_SSE2 __strncpy_sse2 | |
| 48 | # define STRCPY_IA32 __strncpy_ia32 | |
| 49 | # define __GI_STRCPY __GI_strncpy | |
| 50 | # else | |
| 51 | # define STRCPY_SSSE3 __strcpy_ssse3 | |
| 52 | # define STRCPY_SSE2 __strcpy_sse2 | |
| 53 | # define STRCPY_IA32 __strcpy_ia32 | |
| 54 | # define __GI_STRCPY __GI_strcpy | |
| 55 | # endif | |
| 56 | #endif | |
| 57 | ||
| 58 | ||
| 59 | /* Define multiple versions only for the definition in libc. Don't | |
| 60 | define multiple versions for strncpy in static library since we | |
| 61 | need strncpy before the initialization happened. */ | |
| 4f41c682 | 62 | #if IS_IN (libc) |
| 0b1cbaae | 63 | |
| 0b1cbaae L |
64 | .text |
| 65 | ENTRY(STRCPY) | |
| 66 | .type STRCPY, @gnu_indirect_function | |
| 1aee37a2 L |
67 | LOAD_GOT_AND_RTLD_GLOBAL_RO |
| 68 | LOAD_FUNC_GOT_EAX (STRCPY_IA32) | |
| 69 | HAS_CPU_FEATURE (SSE2) | |
| 0b1cbaae | 70 | jz 2f |
| 1aee37a2 L |
71 | LOAD_FUNC_GOT_EAX (STRCPY_SSE2) |
| 72 | HAS_ARCH_FEATURE (Fast_Unaligned_Load) | |
| 0b1cbaae | 73 | jnz 2f |
| 1aee37a2 | 74 | HAS_CPU_FEATURE (SSSE3) |
| 0b1cbaae | 75 | jz 2f |
| 1aee37a2 | 76 | LOAD_FUNC_GOT_EAX (STRCPY_SSSE3) |
| 0b1cbaae L |
77 | 2: ret |
| 78 | END(STRCPY) | |
| 79 | ||
| 0b1cbaae L |
80 | # undef ENTRY |
| 81 | # define ENTRY(name) \ | |
| 82 | .type STRCPY_IA32, @function; \ | |
| 83 | .align 16; \ | |
| b090e8ea L |
84 | .globl STRCPY_IA32; \ |
| 85 | .hidden STRCPY_IA32; \ | |
| 0b1cbaae L |
86 | STRCPY_IA32: cfi_startproc; \ |
| 87 | CALL_MCOUNT | |
| 88 | # undef END | |
| 89 | # define END(name) \ | |
| 90 | cfi_endproc; .size STRCPY_IA32, .-STRCPY_IA32 | |
| 91 | ||
| 92 | # ifdef SHARED | |
| 93 | # undef libc_hidden_builtin_def | |
| 94 | /* It doesn't make sense to send libc-internal strcpy calls through a PLT. | |
| 95 | The speedup we get from using SSSE3 instruction is likely eaten away | |
| 96 | by the indirect call in the PLT. */ | |
| 97 | # define libc_hidden_builtin_def(name) \ | |
| 98 | .globl __GI_STRCPY; __GI_STRCPY = STRCPY_IA32 | |
| 99 | # undef libc_hidden_def | |
| 100 | # define libc_hidden_def(name) \ | |
| 101 | .globl __GI___STRCPY; __GI___STRCPY = STRCPY_IA32 | |
| 102 | ||
| 103 | # endif | |
| 104 | #endif | |
| 105 | ||
| 106 | #ifdef USE_AS_STPCPY | |
| 107 | # ifdef USE_AS_STRNCPY | |
| 108 | # include "../../stpncpy.S" | |
| 109 | # else | |
| 110 | # include "../../i586/stpcpy.S" | |
| 111 | # endif | |
| 112 | #else | |
| 113 | # ifndef USE_AS_STRNCPY | |
| 114 | # include "../../i586/strcpy.S" | |
| 115 | # endif | |
| 116 | #endif |