1/* x86-64-specific implementation of profiling support.
2 Copyright (C) 2002-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Andreas Jaeger <aj@suse.de>, 2002.
5
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.
10
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.
15
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/>. */
19
20#include <sysdep.h>
21
22/* We need a special version of the `mcount' function since for x86-64
23 so that we do not use __builtin_return_address (N) and avoid
24 clobbering of register. */
25
26
27/* We must not pollute the global namespace. */
28#define mcount_internal __mcount_internal
29
30void mcount_internal (u_long frompc, u_long selfpc);
31
32#define _MCOUNT_DECL(frompc, selfpc) \
33void mcount_internal (u_long frompc, u_long selfpc)
34
35
36/* Define MCOUNT as empty since we have the implementation in another
37 file. */
38#define MCOUNT
39