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b5cc329c | 1 | /* Checking mempcpy for x86-64. |
04277e02 | 2 | Copyright (C) 2004-2019 Free Software Foundation, Inc. |
b5cc329c UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
b5cc329c UD |
18 | |
19 | #include <sysdep.h> | |
20 | #include "asm-syntax.h" | |
21 | ||
fbe355fb | 22 | #ifndef SHARED |
b5cc329c UD |
23 | /* For libc.so this is defined in memcpy.S. |
24 | For libc.a, this is a separate source to avoid | |
25 | mempcpy bringing in __chk_fail and all routines | |
26 | it calls. */ | |
27 | .text | |
28 | ENTRY (__mempcpy_chk) | |
29 | cmpq %rdx, %rcx | |
30 | jb __chk_fail | |
31 | jmp mempcpy | |
32 | END (__mempcpy_chk) | |
33 | #endif |