From b6ab06cef4670e02756bcdd4d2c33a49369a4346 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Dec 2005 08:43:25 +0000 Subject: 2005-12-13 Ulrich Drepper --- gmon/bb_init_func.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 gmon/bb_init_func.c (limited to 'gmon') diff --git a/gmon/bb_init_func.c b/gmon/bb_init_func.c new file mode 100644 index 0000000000..19901d8d09 --- /dev/null +++ b/gmon/bb_init_func.c @@ -0,0 +1,54 @@ +/* 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 +#include + +#include + +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); + } +} -- cgit v1.2.3