projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3af48cbd | 1 | /* Multiple versions of mempcpy |
| b090e8ea | 2 | All versions must be listed in ifunc-impl-list.c. |
| 568035b7 | 3 | Copyright (C) 2010-2013 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 and for | |
| 25 | DSO. In static binaries we need mempcpy before the initialization | |
| 26 | happened. */ | |
| 27 | #if defined SHARED && !defined NOT_IN_libc | |
| 3af48cbd L |
28 | .text |
| 29 | ENTRY(__mempcpy) | |
| 30 | .type __mempcpy, @gnu_indirect_function | |
| 31 | pushl %ebx | |
| 32 | cfi_adjust_cfa_offset (4) | |
| 33 | cfi_rel_offset (ebx, 0) | |
| 9a1d9254 | 34 | LOAD_PIC_REG(bx) |
| 3af48cbd L |
35 | cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) |
| 36 | jne 1f | |
| 37 | call __init_cpu_features | |
| 38 | 1: leal __mempcpy_ia32@GOTOFF(%ebx), %eax | |
| 39 | testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx) | |
| 40 | jz 2f | |
| 41 | leal __mempcpy_ssse3@GOTOFF(%ebx), %eax | |
| 42 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) | |
| 43 | jz 2f | |
| 44 | leal __mempcpy_ssse3_rep@GOTOFF(%ebx), %eax | |
| 45 | 2: popl %ebx | |
| 46 | cfi_adjust_cfa_offset (-4) | |
| 47 | cfi_restore (ebx) | |
| 48 | ret | |
| 49 | END(__mempcpy) | |
| 50 | ||
| 51 | # undef ENTRY | |
| 52 | # define ENTRY(name) \ | |
| 53 | .type __mempcpy_ia32, @function; \ | |
| 54 | .p2align 4; \ | |
| b090e8ea L |
55 | .globl __mempcpy_ia32; \ |
| 56 | .hidden __mempcpy_ia32; \ | |
| 3af48cbd L |
57 | __mempcpy_ia32: cfi_startproc; \ |
| 58 | CALL_MCOUNT | |
| 59 | # undef END | |
| 60 | # define END(name) \ | |
| 61 | cfi_endproc; .size __mempcpy_ia32, .-__mempcpy_ia32 | |
| 62 | ||
| 63 | # undef ENTRY_CHK | |
| 64 | # define ENTRY_CHK(name) \ | |
| 65 | .type __mempcpy_chk_ia32, @function; \ | |
| 66 | .globl __mempcpy_chk_ia32; \ | |
| 67 | .p2align 4; \ | |
| 68 | __mempcpy_chk_ia32: cfi_startproc; \ | |
| 69 | CALL_MCOUNT | |
| 70 | # undef END_CHK | |
| 71 | # define END_CHK(name) \ | |
| 72 | cfi_endproc; .size __mempcpy_chk_ia32, .-__mempcpy_chk_ia32 | |
| 73 | ||
| 74 | # undef libc_hidden_def | |
| 75 | # undef libc_hidden_builtin_def | |
| 76 | /* IFUNC doesn't work with the hidden functions in shared library since | |
| 77 | they will be called without setting up EBX needed for PLT which is | |
| 78 | used by IFUNC. */ | |
| 79 | # define libc_hidden_def(name) \ | |
| 80 | .globl __GI_mempcpy; __GI_mempcpy = __mempcpy_ia32 | |
| 81 | # define libc_hidden_builtin_def(name) \ | |
| 82 | .globl __GI___mempcpy; __GI___mempcpy = __mempcpy_ia32 | |
| 83 | #endif | |
| 84 | ||
| 85 | #include "../mempcpy.S" |