1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/* AArch64 definitions for profiling support.
Copyright (C) 2024 Free Software Foundation, Inc.
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
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <shlib-compat.h>
ENTRY (__mcount)
stp x29, x30, [sp, -16]!
/* Note: xpaclri is needed for frompc because of gcc PR target/94791. */
hint 7
mov x1, x30
/* Load the caller return address as frompc. */
ldr x0, [x29, #8]
mov x30, x0
mov x0, x30
/* Use the return address as selfpc. */
mov x0, x30
ldp x29, x30, [sp], 16
b __mcount_internal
END (__mcount)
/* We forgot to add _mcount in glibc 2.17. We added it in 2.18
therefore we want it to be added with version GLIBC_2_18. However,
setting the version is not straight forward because a generic
Version file includes an earlier 2.xx version for each this symbol
and the linker uses the first version it sees. */
#if SHLIB_COMPAT (libc, GLIBC_2_17, GLIBC_2_18)
versioned_symbol (libc, __mcount, _mcount, GLIBC_2_18);
#else
strong_alias (__mcount, _mcount);
#endif
|
