mirror of
https://github.com/adtools/clib2.git
synced 2025-12-08 14:59:05 +00:00
91bcdea2a2
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*
|
|
* $Id: crtbegin.c,v 1.1.1.1 2004-07-26 16:30:22 obarthel Exp $
|
|
*
|
|
* :ts=4
|
|
*
|
|
* Handles global constructors and destructors.
|
|
*/
|
|
|
|
#include <exec/types.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)
|
|
{
|
|
ULONG i = (ULONG)__DTOR_LIST__[0];
|
|
void (**pFuncPtr)(void);
|
|
|
|
if (i == ~0UL)
|
|
{
|
|
/* Find the end of the destructors list */
|
|
i = 1;
|
|
|
|
while (__DTOR_LIST__[i] != NULL)
|
|
i++;
|
|
|
|
/* We're at the NULL entry now. Go back by one */
|
|
i--;
|
|
}
|
|
|
|
/* Call all destructors in reverse order */
|
|
pFuncPtr = __DTOR_LIST__ + i;
|
|
while (i-- > 0)
|
|
(**pFuncPtr--)();
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
#else
|
|
|
|
/****************************************************************************/
|
|
|
|
typedef void (*func_ptr)(void);
|
|
|
|
/****************************************************************************/
|
|
|
|
static void
|
|
_do_ctors(void)
|
|
{
|
|
extern func_ptr __CTOR_LIST__[];
|
|
ULONG nptrs = (ULONG)__CTOR_LIST__[0];
|
|
ULONG i;
|
|
|
|
for(i = nptrs ; i > 0 ; i--)
|
|
__CTOR_LIST__[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);
|
|
|
|
while(i++ < nptrs)
|
|
__DTOR_LIST__[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();
|
|
}
|