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amiga-clib2/library/crtbegin.c
Olaf Barthel f600c5e37a - Added dlclose(), dlerror(), dlopen() and dlsym() functions, which are
available only under OS4. There is a variant of dlopen() in libunix.a
  which will perform a path name conversion. Note that these functions
  will not work in the thread-safe variant of the library because it
  would be unwise to tinker with the currently running program's binary.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15207 87f5fb63-7c3d-0410-a384-fd976d0f7a62
2010-08-21 11:37:03 +00:00

76 lines
2.0 KiB
C

/*
* $Id: crtbegin.c,v 1.13 2010-08-21 11:37:03 obarthel Exp $
*
* :ts=4
*
* Handles global constructors and destructors for the OS4 GCC build.
*/
#if defined(__amigaos4__)
/****************************************************************************/
#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif /* EXEC_TYPES_H */
/****************************************************************************/
/*
* 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__(( used, section(".ctors"), aligned(sizeof(void (*)(void))) ));
static void (*__DTOR_LIST__[1]) (void) __attribute__(( used, section(".dtors"), aligned(sizeof(void (*)(void))) ));
/****************************************************************************/
void _init(void);
void _fini(void);
/****************************************************************************/
void
_init(void)
{
extern void shared_obj_init(void);
int num_ctors,i;
int j;
/* The shared objects need to be set up before any local
constructors are invoked. */
shared_obj_init();
for(i = 1, num_ctors = 0 ; __CTOR_LIST__[i] != NULL ; i++)
num_ctors++;
for(j = 0 ; j < num_ctors ; j++)
__CTOR_LIST__[num_ctors - j]();
}
/****************************************************************************/
void
_fini(void)
{
extern void shared_obj_exit(void);
int num_dtors,i;
static int j;
for(i = 1, num_dtors = 0 ; __DTOR_LIST__[i] != NULL ; i++)
num_dtors++;
while(j++ < num_dtors)
__DTOR_LIST__[j]();
/* The shared objects need to be cleaned up after all local
destructors have been invoked. */
shared_obj_exit();
}
/****************************************************************************/
#endif /*__amigaos4__ */