diff options
Diffstat (limited to 'REORG.TODO/gmon/bb_init_func.c')
-rw-r--r-- | REORG.TODO/gmon/bb_init_func.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/REORG.TODO/gmon/bb_init_func.c b/REORG.TODO/gmon/bb_init_func.c new file mode 100644 index 0000000000..e0fe756da8 --- /dev/null +++ b/REORG.TODO/gmon/bb_init_func.c @@ -0,0 +1,53 @@ +/* Copyright (C) 1996-2017 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, see + <http://www.gnu.org/licenses/>. */ + +/* __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); + } +} |