blob: d13b4d977040b62dfc97e31ecc18ff1955982a59 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/* Copyright (C) 1994 Free Software Foundation, Inc.
Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
On-Line Applications Research Corporation.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <unistd.h>
#include <stdlib.h>
#include "m68020.h"
/* Return control to 135Bug */
void
DEFUN_VOID(__exit_trap)
{
set_vbr( 0 ); /* restore 135Bug vectors */
asm volatile( "trap #15" ); /* trap to 135Bug */
asm volatile( ".short 0x63" ); /* return to 135Bug (.RETURN) */
asm volatile( "jmp main" ); /* restart program */
}
/* The function `_exit' should take a status argument and simply
terminate program execution, using the low-order 8 bits of the
given integer as status. */
__NORETURN void
DEFUN(_exit, (status), int status)
{
/* status is ignored */
M68Kvec[ 45 ] = __exit_trap; /* install exit_trap handler */
asm volatile( "trap #13" ); /* insures SUPV mode */
}
|
