git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3af48cbd | 1 | /* Multiple versions of memmove |
| 9a1d9254 | 2 | Copyright (C) 2010, 2012 Free Software Foundation, Inc. |
| 3af48cbd L |
3 | Contributed by Intel Corporation. |
| 4 | This file is part of the GNU C Library. | |
| 5 | ||
| 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. | |
| 10 | ||
| 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. | |
| 15 | ||
| 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 | |
| 19 | 02111-1307 USA. */ | |
| 20 | ||
| 21 | #include <sysdep.h> | |
| 22 | #include <init-arch.h> | |
| 23 | ||
| 24 | /* Define multiple versions only for the definition in lib. */ | |
| 25 | #ifndef NOT_IN_libc | |
| 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 | |
| 38 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx) | |
| 39 | jz 2f | |
| 40 | leal __memmove_ssse3@GOTOFF(%ebx), %eax | |
| 41 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) | |
| 42 | jz 2f | |
| 43 | leal __memmove_ssse3_rep@GOTOFF(%ebx), %eax | |
| 44 | 2: popl %ebx | |
| 45 | cfi_adjust_cfa_offset (-4) | |
| 46 | cfi_restore (ebx) | |
| 47 | ret | |
| 48 | END(memmove) | |
| 49 | ||
| 50 | # undef ENTRY | |
| 51 | # define ENTRY(name) \ | |
| 52 | .type __memmove_ia32, @function; \ | |
| 53 | .p2align 4; \ | |
| 54 | __memmove_ia32: cfi_startproc; \ | |
| 55 | CALL_MCOUNT | |
| 56 | # else | |
| 57 | .text | |
| 58 | ENTRY(memmove) | |
| 59 | .type memmove, @gnu_indirect_function | |
| 60 | cmpl $0, KIND_OFFSET+__cpu_features | |
| 61 | jne 1f | |
| 62 | call __init_cpu_features | |
| 63 | 1: leal __memmove_ia32, %eax | |
| 64 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features | |
| 65 | jz 2f | |
| 66 | leal __memmove_ssse3, %eax | |
| cff0be88 L |
67 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features |
| 68 | jz 2f | |
| 69 | leal __memmove_ssse3_rep, %eax | |
| 3af48cbd L |
70 | 2: ret |
| 71 | END(memmove) | |
| 72 | ||
| 73 | # undef ENTRY | |
| 74 | # define ENTRY(name) \ | |
| 75 | .type __memmove_ia32, @function; \ | |
| 76 | .globl __memmove_ia32; \ | |
| 77 | .p2align 4; \ | |
| 78 | __memmove_ia32: cfi_startproc; \ | |
| 79 | CALL_MCOUNT | |
| 80 | # endif | |
| 81 | ||
| 82 | # undef END | |
| 83 | # define END(name) \ | |
| 84 | cfi_endproc; .size __memmove_ia32, .-__memmove_ia32 | |
| 85 | ||
| 86 | # undef ENTRY_CHK | |
| 87 | # define ENTRY_CHK(name) \ | |
| 88 | .type __memmove_chk_ia32, @function; \ | |
| 89 | .globl __memmove_chk_ia32; \ | |
| 90 | .p2align 4; \ | |
| 91 | __memmove_chk_ia32: cfi_startproc; \ | |
| 92 | CALL_MCOUNT | |
| 93 | # undef END_CHK | |
| 94 | # define END_CHK(name) \ | |
| 95 | cfi_endproc; .size __memmove_chk_ia32, .-__memmove_chk_ia32 | |
| 96 | ||
| 97 | # ifdef SHARED | |
| 98 | # undef libc_hidden_builtin_def | |
| 99 | /* IFUNC doesn't work with the hidden functions in shared library since | |
| 100 | they will be called without setting up EBX needed for PLT which is | |
| 101 | used by IFUNC. */ | |
| 102 | # define libc_hidden_builtin_def(name) \ | |
| 103 | .globl __GI_memmove; __GI_memmove = __memmove_ia32 | |
| 104 | # endif | |
| 105 | #endif | |
| 106 | ||
| 107 | #include "../memmove.S" |