/* Copyright (C) 1986,1987 by Manx Software Systems, Inc. */

#include <fcntl.h>
#include <functions.h>

extern int _argc, _arg_len;
extern char **_argv, *_arg_lin;
extern struct WBStartup *WBenchMsg;
extern void *DOSBase, *MathBase, *MathTransBase;
extern void *MathIeeeDoubBasBase, *MathIeeeDoubTransBase;
extern BPTR _detach_curdir;
extern void *_oldtrap, **_trapaddr;

void (*_cln)(void);

void
_exit(int code)
{
	long ret = code;
	register int fd;

	if (_devtab) {
		for (fd = 0 ; fd < _numdev ; fd++)
			close(fd);
		FreeMem(_devtab, _numdev*(long)sizeof(struct _dev));
	}
	if (_cln)
		(*_cln)();
	if (_detach_curdir)				/* for DETACHed programs */
		UnLock(_detach_curdir);
	if (_trapaddr)					/* clean up signal handling */
		*_trapaddr = _oldtrap;
	if (MathTransBase)
		CloseLibrary(MathTransBase);
	if (MathBase)
		CloseLibrary(MathBase);
	if (MathIeeeDoubBasBase)
		CloseLibrary(MathIeeeDoubBasBase);
	if (MathIeeeDoubTransBase)
		CloseLibrary(MathIeeeDoubTransBase);
	{
#asm
	mc68881
	movem.l	a5/a6,-(sp)
	move.l	4,a6				;get ExecBase
	btst.b	#4,$129(a6)			;check for 68881 flag in AttnFlags
	beq		1$					;skip if not
	lea		2$,a5
	jsr		-30(a6)				;do it in supervisor mode
	bra		1$
2$
	clr.l	-(sp)
	frestore (sp)+				;reset the ffp stuff
	rte							;and return
1$
	move.l	(sp)+,a5/a6
#endasm
	}
	if (WBenchMsg == 0) {
		if (_arg_lin) {
			FreeMem(_arg_lin, (long)_arg_len);
			FreeMem(_argv, (long)(_argc+1)*sizeof(*_argv));
		}
	}
	else {
		Forbid();
		ReplyMsg((struct Message *)WBenchMsg);
	}
	CloseLibrary(DOSBase);
	{
#asm
		move.l	%%ret,d0		;pick up return exit code
		move.l	__savsp#,sp		;get back original stack pointer
		rts						;and exit
#endasm
	}
}