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-rw-r--r--gmon/bb_init_func.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/gmon/bb_init_func.c b/gmon/bb_init_func.c
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+++ b/gmon/bb_init_func.c
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+/* Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by David Mosberger (davidm@cs.arizona.edu).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* __bb_init_func is invoked at the beginning of each function, before
+ any registers have been saved. This generic routine should work
+ provided that calling this function doesn't mangle the arguments
+ passed to the function being called. If that's not the case, a
+ system specific routine must be provided. */
+
+#include <sys/types.h>
+#include <sys/gmon.h>
+
+#include <stdlib.h>
+
+void
+__bb_init_func (struct __bb *bb)
+{
+ struct gmonparam *p = &_gmonparam;
+
+ if (bb->zero_word != 0)
+ {
+ return; /* handle common case quickly */
+ }
+
+ /* insert this basic-block into basic-block list: */
+ bb->zero_word = 1;
+ bb->next = __bb_head;
+ __bb_head = bb;
+
+ if (bb->next == 0 && p->state != GMON_PROF_ON)
+ {
+ /* we didn't register _mcleanup yet and pc profiling doesn't seem
+ to be active, so let's register it now: */
+ extern void *__dso_handle __attribute__ ((__weak__));
+ __cxa_atexit ((void (*) (void *)) _mcleanup, NULL,
+ &__dso_handle ? __dso_handle : NULL);
+ }
+}