82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*-
|
|
* Copyright 1996, 1997, 1998, 2000 John D. Polstra.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
|
|
typedef void (*fptr)(void);
|
|
|
|
static fptr ctor_list[1] __attribute__((section(".ctors"))) = { (fptr) -1 };
|
|
static fptr dtor_list[1] __attribute__((section(".dtors"))) = { (fptr) -1 };
|
|
|
|
static void
|
|
do_ctors(void)
|
|
{
|
|
fptr *fpp;
|
|
|
|
for(fpp = ctor_list + 1; *fpp != 0; ++fpp)
|
|
;
|
|
while(--fpp > ctor_list)
|
|
(**fpp)();
|
|
}
|
|
|
|
static void
|
|
do_dtors(void)
|
|
{
|
|
fptr *fpp;
|
|
|
|
for(fpp = dtor_list + 1; *fpp != 0; ++fpp)
|
|
(**fpp)();
|
|
}
|
|
|
|
/*
|
|
* With very large programs on some architectures (e.g., the Alpha),
|
|
* it is possible to get relocation overflows on the limited
|
|
* displacements of call/bsr instructions. It is particularly likely
|
|
* for the calls from _init() and _fini(), because they are in
|
|
* separate sections. Avoid the problem by forcing indirect calls.
|
|
*/
|
|
static void (*p_do_ctors)(void) = do_ctors;
|
|
static void (*p_do_dtors)(void) = do_dtors;
|
|
|
|
extern void _init(void) __attribute__((section(".init")));
|
|
|
|
void
|
|
_init(void)
|
|
{
|
|
(*p_do_ctors)();
|
|
}
|
|
|
|
extern void _fini(void) __attribute__((section(".fini")));
|
|
|
|
void
|
|
_fini(void)
|
|
{
|
|
(*p_do_dtors)();
|
|
}
|
|
|
|
#include "crtbrand.c"
|