projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3af48cbd | 1 | /* Multiple versions of __memset_chk |
| b090e8ea | 2 | All versions must be listed in ifunc-impl-list.c. |
| b168057a | 3 | Copyright (C) 2010-2015 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(__memset_chk) | |
| 29 | .type __memset_chk, @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 __memset_chk_ia32@GOTOFF(%ebx), %eax | |
| 38 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) | |
| 39 | jz 2f | |
| 40 | leal __memset_chk_sse2@GOTOFF(%ebx), %eax | |
| 41 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) | |
| 42 | jz 2f | |
| 43 | leal __memset_chk_sse2_rep@GOTOFF(%ebx), %eax | |
| 44 | 2: popl %ebx | |
| 45 | cfi_adjust_cfa_offset (-4) | |
| 46 | cfi_restore (ebx) | |
| 47 | ret | |
| 48 | END(__memset_chk) | |
| 49 | ||
| 50 | strong_alias (__memset_chk, __memset_zero_constant_len_parameter) | |
| 51 | .section .gnu.warning.__memset_zero_constant_len_parameter | |
| 52 | .string "memset used with constant zero length parameter; this could be due to transposed parameters" | |
| 53 | # else | |
| 54 | .text | |
| 55 | ENTRY(__memset_chk) | |
| 56 | .type __memset_chk, @gnu_indirect_function | |
| 57 | cmpl $0, KIND_OFFSET+__cpu_features | |
| 58 | jne 1f | |
| 59 | call __init_cpu_features | |
| 60 | 1: leal __memset_chk_ia32, %eax | |
| 61 | testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features | |
| 62 | jz 2f | |
| 63 | leal __memset_chk_sse2, %eax | |
| 64 | testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features | |
| 65 | jz 2f | |
| 66 | leal __memset_chk_sse2_rep, %eax | |
| 67 | 2: ret | |
| 68 | END(__memset_chk) | |
| 69 | ||
| 70 | .type __memset_chk_sse2, @function | |
| 71 | .p2align 4; | |
| 72 | __memset_chk_sse2: | |
| 73 | cfi_startproc | |
| 74 | CALL_MCOUNT | |
| 75 | movl 12(%esp), %eax | |
| 76 | cmpl %eax, 16(%esp) | |
| 77 | jb __chk_fail | |
| 78 | jmp __memset_sse2 | |
| f9a97dda | 79 | cfi_endproc |
| 3af48cbd L |
80 | .size __memset_chk_sse2, .-__memset_chk_sse2 |
| 81 | ||
| 82 | .type __memset_chk_sse2_rep, @function | |
| 83 | .p2align 4; | |
| 84 | __memset_chk_sse2_rep: | |
| 85 | cfi_startproc | |
| 86 | CALL_MCOUNT | |
| 87 | movl 12(%esp), %eax | |
| 88 | cmpl %eax, 16(%esp) | |
| 89 | jb __chk_fail | |
| 90 | jmp __memset_sse2_rep | |
| f9a97dda | 91 | cfi_endproc |
| 3af48cbd L |
92 | .size __memset_chk_sse2_rep, .-__memset_chk_sse2_rep |
| 93 | ||
| 94 | .type __memset_chk_ia32, @function | |
| 95 | .p2align 4; | |
| 96 | __memset_chk_ia32: | |
| 97 | cfi_startproc | |
| 98 | CALL_MCOUNT | |
| 99 | movl 12(%esp), %eax | |
| 100 | cmpl %eax, 16(%esp) | |
| 101 | jb __chk_fail | |
| 102 | jmp __memset_ia32 | |
| f9a97dda | 103 | cfi_endproc |
| 3af48cbd L |
104 | .size __memset_chk_ia32, .-__memset_chk_ia32 |
| 105 | # endif | |
| 106 | #endif |