1 /* Copy memory block and return pointer to beginning of destination block
3 This file is part of the GNU C Library.
4 Copyright (C) 2003-2019 Free Software Foundation, Inc.
5 Contributed by Ulrich Drepper <drepper@cygnus.com>, 2003.
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.
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.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
22 #include "asm-syntax.h"
24 #define PARMS 4+4 /* one spilled register */
38 # if defined PIC && IS_IN (libc)
39 ENTRY_CHK (__memmove_chk)
42 jb HIDDEN_JUMPTARGET (__chk_fail)
43 END_CHK (__memmove_chk)
50 cfi_adjust_cfa_offset (4)
54 cfi_rel_offset (edi, 0)
57 cfi_register (esi, edx)
80 cfi_adjust_cfa_offset (-4)
85 cfi_adjust_cfa_offset (4)
86 cfi_rel_offset (edi, 0)
87 cfi_register (esi, edx)
89 /* Backward copying. */
91 leal -1(%edi, %ecx), %edi
92 leal -1(%esi, %ecx), %esi
108 movl DEST(%esp), %eax
113 cfi_adjust_cfa_offset (-4)
119 libc_hidden_builtin_def (memmove)