1/* x86-64-specific implementation of profiling support.
2 Copyright (C) 2002-2023 Free Software Foundation, Inc.
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
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sysdep.h>
20
21/* We need a special version of the `mcount' function since for x86-64
22 so that we do not use __builtin_return_address (N) and avoid
23 clobbering of register. */
24
25
26/* We must not pollute the global namespace. */
27#define mcount_internal __mcount_internal
28
29void mcount_internal (u_long frompc, u_long selfpc);
30
31#define _MCOUNT_DECL(frompc, selfpc) \
32void mcount_internal (u_long frompc, u_long selfpc)
33
34
35/* Define MCOUNT as empty since we have the implementation in another
36 file. */
37#define MCOUNT
38