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54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/* Copyright (C) 1996-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Mosberger (davidm@cs.arizona.edu).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* __bb_init_func is invoked at the beginning of each function, before
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any registers have been saved. This generic routine should work
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provided that calling this function doesn't mangle the arguments
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passed to the function being called. If that's not the case, a
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system specific routine must be provided. */
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#include <sys/types.h>
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#include <sys/gmon.h>
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#include <stdlib.h>
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void
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__bb_init_func (struct __bb *bb)
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{
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struct gmonparam *p = &_gmonparam;
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if (bb->zero_word != 0)
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{
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return; /* handle common case quickly */
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}
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/* insert this basic-block into basic-block list: */
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bb->zero_word = 1;
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bb->next = __bb_head;
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__bb_head = bb;
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if (bb->next == 0 && p->state != GMON_PROF_ON)
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{
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/* we didn't register _mcleanup yet and pc profiling doesn't seem
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to be active, so let's register it now: */
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extern void *__dso_handle __attribute__ ((__weak__));
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__cxa_atexit ((void (*) (void *)) _mcleanup, NULL,
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&__dso_handle ? __dso_handle : NULL);
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}
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}
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