From 0788e1f853cae7be12203116b0d277ab1d653afb Mon Sep 17 00:00:00 2001
From: solar <unknown>
Date: Sun, 5 Feb 2006 21:37:24 +0000
Subject: [PATCH] Fallback to static array as pre-main malloc() created
 problems. (_start calls atexit once.)

---
 functions/stdlib/atexit.c | 10 ++++------
 functions/stdlib/exit.c   | 16 +++++++++-------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/functions/stdlib/atexit.c b/functions/stdlib/atexit.c
index 1436356..0d61e32 100644
--- a/functions/stdlib/atexit.c
+++ b/functions/stdlib/atexit.c
@@ -12,20 +12,18 @@
 
 #ifndef REGTEST
 
-extern struct _PDCLIB_exitfunc_t * regstack;
+extern void (*_PDCLIB_regstack[])( void );
+extern size_t _PDCLIB_regptr;
 
 int atexit( void (*func)( void ) )
 {
-    struct _PDCLIB_exitfunc_t * regfunc = (struct _PDCLIB_exitfunc_t *)malloc( sizeof( struct _PDCLIB_exitfunc_t ) );
-    if ( regfunc == NULL )
+    if ( _PDCLIB_regptr == 0 )
     {
         return -1;
     }
     else
     {
-        regfunc->func = func;
-	regfunc->next = regstack;
-	regstack = regfunc;
+        _PDCLIB_regstack[ --_PDCLIB_regptr ] = func;
 	return 0;
     }
 }
diff --git a/functions/stdlib/exit.c b/functions/stdlib/exit.c
index 969b795..0d816a3 100644
--- a/functions/stdlib/exit.c
+++ b/functions/stdlib/exit.c
@@ -16,17 +16,19 @@
    functions that had already been called at the time it was registered.
 */
 
-struct _PDCLIB_exitfunc_t * regstack = NULL;
+/* TODO: 32 is guaranteed. This should be dynamic but ATM gives problems
+   with my malloc.
+*/
+#define NUMBER_OF_SLOTS 40
+
+void (*_PDCLIB_regstack[ NUMBER_OF_SLOTS ])( void );
+size_t _PDCLIB_regptr = NUMBER_OF_SLOTS;
 
 void exit( int status )
 {
-    struct _PDCLIB_exitfunc_t * next = regstack;
-    while ( next != NULL )
+    while ( _PDCLIB_regptr < NUMBER_OF_SLOTS )
     {
-        next->func();
-        regstack = next->next;
-        free( next );
-        next = regstack;
+        _PDCLIB_regstack[ _PDCLIB_regptr++ ]();
     }
     _Exit( status );
 }
-- 
2.40.0