| /* Multiple versions of __memset_chk |
| All versions must be listed in ifunc-impl-list.c. |
| Copyright (C) 2010-2014 Free Software Foundation, Inc. |
| Contributed by Intel Corporation. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <init-arch.h> |
| |
| /* Define multiple versions only for the definition in lib. */ |
| #ifndef NOT_IN_libc |
| # ifdef SHARED |
| .text |
| ENTRY(__memset_chk) |
| .type __memset_chk, @gnu_indirect_function |
| pushl %ebx |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (ebx, 0) |
| LOAD_PIC_REG(bx) |
| cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) |
| jne 1f |
| call __init_cpu_features |
| 1: leal __memset_chk_ia32@GOTOFF(%ebx), %eax |
| testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) |
| jz 2f |
| leal __memset_chk_sse2@GOTOFF(%ebx), %eax |
| testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) |
| jz 2f |
| leal __memset_chk_sse2_rep@GOTOFF(%ebx), %eax |
| 2: popl %ebx |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (ebx) |
| ret |
| END(__memset_chk) |
| |
| strong_alias (__memset_chk, __memset_zero_constant_len_parameter) |
| .section .gnu.warning.__memset_zero_constant_len_parameter |
| .string "memset used with constant zero length parameter; this could be due to transposed parameters" |
| # else |
| .text |
| ENTRY(__memset_chk) |
| .type __memset_chk, @gnu_indirect_function |
| cmpl $0, KIND_OFFSET+__cpu_features |
| jne 1f |
| call __init_cpu_features |
| 1: leal __memset_chk_ia32, %eax |
| testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features |
| jz 2f |
| leal __memset_chk_sse2, %eax |
| testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features |
| jz 2f |
| leal __memset_chk_sse2_rep, %eax |
| 2: ret |
| END(__memset_chk) |
| |
| .type __memset_chk_sse2, @function |
| .p2align 4; |
| __memset_chk_sse2: |
| cfi_startproc |
| CALL_MCOUNT |
| movl 12(%esp), %eax |
| cmpl %eax, 16(%esp) |
| jb __chk_fail |
| jmp __memset_sse2 |
| cfi_endproc |
| .size __memset_chk_sse2, .-__memset_chk_sse2 |
| |
| .type __memset_chk_sse2_rep, @function |
| .p2align 4; |
| __memset_chk_sse2_rep: |
| cfi_startproc |
| CALL_MCOUNT |
| movl 12(%esp), %eax |
| cmpl %eax, 16(%esp) |
| jb __chk_fail |
| jmp __memset_sse2_rep |
| cfi_endproc |
| .size __memset_chk_sse2_rep, .-__memset_chk_sse2_rep |
| |
| .type __memset_chk_ia32, @function |
| .p2align 4; |
| __memset_chk_ia32: |
| cfi_startproc |
| CALL_MCOUNT |
| movl 12(%esp), %eax |
| cmpl %eax, 16(%esp) |
| jb __chk_fail |
| jmp __memset_ia32 |
| cfi_endproc |
| .size __memset_chk_ia32, .-__memset_chk_ia32 |
| # endif |
| #endif |
