| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* i386-specific implementation of profiling support. |
| 2 | Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| 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 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include <sysdep.h> |
| 21 | |
| 22 | /* We need a special version of the `mcount' function since for ix86 it |
| 23 | must not clobber any register. This has several reasons: |
| 24 | - there is a bug in gcc as of version 2.7.2.2 which prohibits the |
| 25 | use of profiling together with nested functions |
| 26 | - the ELF `fixup' function uses GCC's regparm feature |
| 27 | - some (future) systems might want to pass parameters in registers. */ |
| 28 | |
| 29 | /* We must not pollute the global namespace. */ |
| 30 | #define mcount_internal __mcount_internal |
| 31 | |
| 32 | extern void mcount_internal (u_long frompc, u_long selfpc) internal_function; |
| 33 | |
| 34 | #define _MCOUNT_DECL(frompc, selfpc) \ |
| 35 | void internal_function mcount_internal (u_long frompc, u_long selfpc) |
| 36 | |
| 37 | |
| 38 | /* Define MCOUNT as empty since we have the implementation in another |
| 39 | file. */ |
| 40 | #define MCOUNT |