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d4697bc9 | 1 | /* Copyright (C) 1996-2014 Free Software Foundation, Inc. |
b6ab06ce UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by David Mosberger (davidm@cs.arizona.edu). | |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
b6ab06ce UD |
18 | |
19 | /* __bb_init_func is invoked at the beginning of each function, before | |
20 | any registers have been saved. This generic routine should work | |
21 | provided that calling this function doesn't mangle the arguments | |
22 | passed to the function being called. If that's not the case, a | |
23 | system specific routine must be provided. */ | |
24 | ||
25 | #include <sys/types.h> | |
26 | #include <sys/gmon.h> | |
27 | ||
28 | #include <stdlib.h> | |
29 | ||
30 | void | |
31 | __bb_init_func (struct __bb *bb) | |
32 | { | |
33 | struct gmonparam *p = &_gmonparam; | |
34 | ||
35 | if (bb->zero_word != 0) | |
36 | { | |
37 | return; /* handle common case quickly */ | |
38 | } | |
39 | ||
40 | /* insert this basic-block into basic-block list: */ | |
41 | bb->zero_word = 1; | |
42 | bb->next = __bb_head; | |
43 | __bb_head = bb; | |
44 | ||
45 | if (bb->next == 0 && p->state != GMON_PROF_ON) | |
46 | { | |
47 | /* we didn't register _mcleanup yet and pc profiling doesn't seem | |
48 | to be active, so let's register it now: */ | |
49 | extern void *__dso_handle __attribute__ ((__weak__)); | |
50 | __cxa_atexit ((void (*) (void *)) _mcleanup, NULL, | |
51 | &__dso_handle ? __dso_handle : NULL); | |
52 | } | |
53 | } |