2 * Copyright (c) 1990 Regents of the University of California.
5 * %sccs.include.redist.c%
8 /* Adapted from newlib/libc/stdlib/{,at}exit.[ch].
9 If you use xatexit, you must call xexit instead of exit. */
12 #include "libiberty.h"
19 #define size_t unsigned long
22 /* For systems with larger pointers than ints, this must be declared. */
23 PTR malloc
PARAMS ((size_t));
25 static void xatexit_cleanup
PARAMS ((void));
27 /* Pointer to function run by xexit. */
28 extern void (*_xexit_cleanup
) PARAMS ((void));
30 #define XATEXIT_SIZE 32
33 struct xatexit
*next
; /* next in list */
34 int ind
; /* next index in this table */
35 void (*fns
[XATEXIT_SIZE
]) PARAMS ((void)); /* the table itself */
38 /* Allocate one struct statically to guarantee that we can register
39 at least a few handlers. */
40 static struct xatexit xatexit_first
;
42 /* Points to head of LIFO stack. */
43 static struct xatexit
*xatexit_head
= &xatexit_first
;
45 /* Register function FN to be run by xexit.
46 Return 0 if successful, -1 if not. */
50 void (*fn
) PARAMS ((void));
52 register struct xatexit
*p
;
54 /* Tell xexit to call xatexit_cleanup. */
56 _xexit_cleanup
= xatexit_cleanup
;
59 if (p
->ind
>= XATEXIT_SIZE
)
61 if ((p
= (struct xatexit
*) malloc (sizeof *p
)) == NULL
)
64 p
->next
= xatexit_head
;
67 p
->fns
[p
->ind
++] = fn
;
71 /* Call any cleanup functions. */
76 register struct xatexit
*p
;
79 for (p
= xatexit_head
; p
; p
= p
->next
)
80 for (n
= p
->ind
; --n
>= 0;)
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