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c08bc50a | 1 | /* Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
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3 | Contributed by David Mosberger (davidm@cs.arizona.edu). |
4 | ||
ebbad4cc | 5 | The GNU C Library is free software; you can redistribute it and/or |
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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. | |
b20e47cb | 9 | |
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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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
b20e47cb | 14 | |
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15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
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19 | |
20 | /* __bb_init_func is invoked at the beginning of each function, before | |
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21 | any registers have been saved. This generic routine should work |
22 | provided that calling this function doesn't mangle the arguments | |
23 | passed to the function being called. If that's not the case, a | |
24 | system specific routine must be provided. */ | |
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25 | |
26 | #include <sys/types.h> | |
27 | #include <sys/gmon.h> | |
28 | ||
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29 | #include <stdlib.h> |
30 | ||
31 | void | |
b13927da | 32 | __bb_init_func (struct __bb *bb) |
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33 | { |
34 | struct gmonparam *p = &_gmonparam; | |
35 | ||
36 | if (bb->zero_word != 0) | |
37 | { | |
38 | return; /* handle common case quickly */ | |
39 | } | |
40 | ||
41 | /* insert this basic-block into basic-block list: */ | |
42 | bb->zero_word = 1; | |
43 | bb->next = __bb_head; | |
44 | __bb_head = bb; | |
45 | ||
46 | if (bb->next == 0 && p->state != GMON_PROF_ON) | |
47 | { | |
48 | /* we didn't register _mcleanup yet and pc profiling doesn't seem | |
49 | to be active, so let's register it now: */ | |
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50 | extern void *__dso_handle __attribute__ ((__weak__)); |
51 | __cxa_atexit ((void (*) (void *)) _mcleanup, NULL, | |
52 | &__dso_handle ? __dso_handle : NULL); | |
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53 | } |
54 | } |