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) 2003-2024 Free Software Foundation, Inc.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
21 #include "asm-syntax.h"
23 #define PARMS 4+4 /* one spilled register */
32 #if defined SHARED && IS_IN (libc)
33 ENTRY_CHK (__memmove_chk)
36 jb HIDDEN_JUMPTARGET (__chk_fail)
37 END_CHK (__memmove_chk)
38 libc_hidden_builtin_def (__memmove_chk)
44 cfi_adjust_cfa_offset (4)
48 cfi_rel_offset (edi, 0)
51 cfi_register (esi, edx)
72 cfi_adjust_cfa_offset (-4)
77 cfi_adjust_cfa_offset (4)
78 cfi_rel_offset (edi, 0)
79 cfi_register (esi, edx)
81 /* Backward copying. */
83 leal -1(%edi, %ecx), %edi
84 leal -1(%esi, %ecx), %esi
103 cfi_adjust_cfa_offset (-4)
108 libc_hidden_builtin_def (memmove)