projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3af48cbd | 1 | /* Multiple versions of memmove |
| b090e8ea | 2 | All versions must be listed in ifunc-impl-list.c. |
| d4697bc9 | 3 | Copyright (C) 2010-2014 Free Software Foundation, Inc. |
| 3af48cbd 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/>. */ | |
| 3af48cbd L |
20 | |
| 21 | #include <sysdep.h> | |
| 22 | #include <init-arch.h> | |
| 23 | ||
| 24 | /* Define multiple versions only for the definition in lib. */ | |
| 4f41c682 | 25 | #if IS_IN (libc) |
| 3af48cbd | 26 | # ifdef SHARED |
| 3af48cbd L |
27 | .text |
| 28 | ENTRY(memmove) | |
| 29 | .type memmove, @gnu_indirect_function | |
| 30 | pushl %ebx | |
| 31 | cfi_adjust_cfa_offset (4) | |
| 32 | cfi_rel_offset (ebx, 0) | |
| 9a1d9254 | 33 | LOAD_PIC_REG(bx) |
| 3af48cbd L |
34 | cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) |
| 35 | jne 1f | |
| 36 | call __init_cpu_features | |
| 37 | 1: leal __memmove_ia32@GOTOFF(%ebx), %eax | |
| 8b4416d8 AS |
38 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) |
| 39 | jz 2f | |
| 40 | leal __memmove_sse2_unaligned@GOTOFF(%ebx), %eax | |
| 41 | testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx) | |
| 42 | jnz 2f | |
| 3af48cbd L |
43 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx) |
| 44 | jz 2f | |
| 45 | leal __memmove_ssse3@GOTOFF(%ebx), %eax | |
| 46 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) | |
| 47 | jz 2f | |
| 48 | leal __memmove_ssse3_rep@GOTOFF(%ebx), %eax | |
| 49 | 2: popl %ebx | |
| 50 | cfi_adjust_cfa_offset (-4) | |
| 51 | cfi_restore (ebx) | |
| 52 | ret | |
| 53 | END(memmove) | |
| 54 | ||
| 55 | # undef ENTRY | |
| 56 | # define ENTRY(name) \ | |
| 57 | .type __memmove_ia32, @function; \ | |
| 58 | .p2align 4; \ | |
| b090e8ea L |
59 | .globl __memmove_ia32; \ |
| 60 | .hidden __memmove_ia32; \ | |
| 3af48cbd L |
61 | __memmove_ia32: cfi_startproc; \ |
| 62 | CALL_MCOUNT | |
| 63 | # else | |
| 64 | .text | |
| 65 | ENTRY(memmove) | |
| 66 | .type memmove, @gnu_indirect_function | |
| 67 | cmpl $0, KIND_OFFSET+__cpu_features | |
| 68 | jne 1f | |
| 69 | call __init_cpu_features | |
| 70 | 1: leal __memmove_ia32, %eax | |
| 8b4416d8 AS |
71 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features |
| 72 | jz 2f | |
| 73 | leal __memmove_sse2_unaligned, %eax | |
| 74 | testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features | |
| 75 | jnz 2f | |
| 3af48cbd L |
76 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features |
| 77 | jz 2f | |
| 78 | leal __memmove_ssse3, %eax | |
| cff0be88 L |
79 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features |
| 80 | jz 2f | |
| 81 | leal __memmove_ssse3_rep, %eax | |
| 3af48cbd L |
82 | 2: ret |
| 83 | END(memmove) | |
| 84 | ||
| 85 | # undef ENTRY | |
| 86 | # define ENTRY(name) \ | |
| 87 | .type __memmove_ia32, @function; \ | |
| 88 | .globl __memmove_ia32; \ | |
| 89 | .p2align 4; \ | |
| 90 | __memmove_ia32: cfi_startproc; \ | |
| 91 | CALL_MCOUNT | |
| 92 | # endif | |
| 93 | ||
| 94 | # undef END | |
| 95 | # define END(name) \ | |
| 96 | cfi_endproc; .size __memmove_ia32, .-__memmove_ia32 | |
| 97 | ||
| 98 | # undef ENTRY_CHK | |
| 99 | # define ENTRY_CHK(name) \ | |
| 100 | .type __memmove_chk_ia32, @function; \ | |
| 101 | .globl __memmove_chk_ia32; \ | |
| 102 | .p2align 4; \ | |
| 103 | __memmove_chk_ia32: cfi_startproc; \ | |
| 104 | CALL_MCOUNT | |
| 105 | # undef END_CHK | |
| 106 | # define END_CHK(name) \ | |
| 107 | cfi_endproc; .size __memmove_chk_ia32, .-__memmove_chk_ia32 | |
| 108 | ||
| 109 | # ifdef SHARED | |
| 110 | # undef libc_hidden_builtin_def | |
| 111 | /* IFUNC doesn't work with the hidden functions in shared library since | |
| 112 | they will be called without setting up EBX needed for PLT which is | |
| 113 | used by IFUNC. */ | |
| 114 | # define libc_hidden_builtin_def(name) \ | |
| 115 | .globl __GI_memmove; __GI_memmove = __memmove_ia32 | |
| 116 | # endif | |
| 117 | #endif | |
| 118 | ||
| 119 | #include "../memmove.S" |