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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
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Olaf Barthel
2004-07-26 16:36:55 +00:00
parent a9e8f137ad
commit 91bcdea2a2
669 changed files with 80825 additions and 0 deletions
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library/stdlib_constructor_begin.c Normal file
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/*
* $Id: stdlib_constructor_begin.c,v 1.1.1.1 2004-07-26 16:31:52 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifndef _STDLIB_HEADERS_H
#include "stdlib_headers.h"
#endif /* _STDLIB_HEADERS_H */
/****************************************************************************/
#include <stdlib.h>
#include <setjmp.h>
/****************************************************************************/
#if defined(__amigaos4__)
/****************************************************************************/
/*
* Dummy constructor and destructor array. The linker script will put these at the
* very beginning of section ".ctors" and ".dtors". crtend.o contains a similar entry
* with a NULL pointer entry and is put at the end of the sections. This way, the init
* code can find the global constructor/destructor pointers
*/
static void (*__CTOR_LIST__[1]) (void) __attribute__((section(".ctors"))) = { (void *)-1 };
static void (*__DTOR_LIST__[1]) (void) __attribute__((section(".dtors"))) = { (void *)-1 };
/****************************************************************************/
static void
_do_ctors(void)
{
void (**pFuncPtr)(void);
/* Skip the first entry in the list (it's -1 anyway) */
pFuncPtr = __CTOR_LIST__ + 1;
/* Call all constructors in forward order */
while (*pFuncPtr != NULL)
(**pFuncPtr++)();
}
/****************************************************************************/
static void
_do_dtors(void)
{
static ULONG i = ~0UL;
void (**pFuncPtr)(void);
if(i == ~0UL)
{
ULONG j = (ULONG)__DTOR_LIST__[0];
if(j == ~0UL)
{
/* Find the end of the destructors list. */
j = 1;
while(__DTOR_LIST__[j] != NULL)
j++;
/* We're at the NULL entry now. Go back by one. */
j--;
}
i = j;
}
/* If one of the destructors drops into
* exit(), processing will continue with
* the next following destructor.
*/
(void)setjmp(__exit_jmp_buf);
/* Call all destructors in reverse order. */
pFuncPtr = &__DTOR_LIST__[i];
while(i > 0)
{
i--;
(**pFuncPtr--)();
}
}
/****************************************************************************/
#elif defined(__SASC)
/****************************************************************************/
extern int (* __far __ctors[])(void);
extern void (* __far __dtors[])(void);
/****************************************************************************/
/* With SAS/C this function is placed in front of the first constructor
* table entry. It will invoke all following constructors and
* finally all the destructors. We don't use this approach here.
*/
void
__construct(void)
{
}
/****************************************************************************/
static void
_do_ctors(void)
{
void * volatile p = &__ctors;
/* The address is NULL if no constructor functions are to be used. */
if(p != NULL)
{
int i;
for(i = 0 ; __ctors[i] != NULL ; i++)
{
if((*__ctors[i])() != 0)
exit(RETURN_FAIL);
}
}
}
/****************************************************************************/
static void
_do_dtors(void)
{
void * volatile p = &__dtors;
/* The address is NULL if no destructor functions are to be used. */
if(p != NULL)
{
static int i;
/* If one of the destructors drops into
* exit(), processing will continue with
* the next following destructor.
*/
(void)setjmp(__exit_jmp_buf);
while(__dtors[i] != NULL)
{
/* Increment this before jumping in, so that the next
* invocation will always pick up the destructor following
* the one we will invoke rigt now.
*/
i++;
(*__dtors[i-1])();
}
}
}
/****************************************************************************/
#else
/****************************************************************************/
typedef void (*func_ptr)(void);
/****************************************************************************/
static void
_do_ctors(void)
{
extern func_ptr __CTOR_LIST__[];
ULONG nptrs = (ULONG)__CTOR_LIST__[0];
ULONG i;
/* Call all constructors in forward order */
for(i = 0 ; i < nptrs ; i++)
__CTOR_LIST__[1+i]();
}
/****************************************************************************/
static void
_do_dtors(void)
{
extern func_ptr __DTOR_LIST__[];
extern jmp_buf __exit_jmp_buf;
ULONG nptrs = (ULONG)__DTOR_LIST__[0];
static ULONG i;
/* If one of the destructors drops into
* exit(), processing will continue with
* the next following destructor.
*/
(void)setjmp(__exit_jmp_buf);
/* Call all destructors in reverse order */
while(i++ < nptrs)
__DTOR_LIST__[1+nptrs - i]();
}
/****************************************************************************/
#endif /*__amigaos4__ */
/****************************************************************************/
/* FIXME: Do we need to put these in .init/.fini sections? */
//void _init(void) __attribute__((section(".init")));
//void _fini(void) __attribute__((section(".fini")));
/****************************************************************************/
void
_init(void)
{
_do_ctors();
}
/****************************************************************************/
void
_fini(void)
{
_do_dtors();
}