1/*	$NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $	*/
2
3#include "SYS.h"
4#include "assym.h"
5
6#if defined(LIBC_SCCS)
7__RCSID("$NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $")
8#endif
9
10/*
11 * C library -- _setjmp, _longjmp
12 *
13 *	longjmp(a,v)
14 * will generate a "return(v?v:1)" from the last call to
15 *	setjmp(a)
16 * by restoring registers from the stack.
17 * The previous signal state is restored.
18 */
19
20ENTRY(setjmp)
21	mr	%r6,%r3
22	li	%r3,SIG_BLOCK
23	li	%r4,0
24	_DOSYSCALL(compat_13_sigprocmask13) # assume no error	XXX
25	mflr	%r11
26	mfcr	%r12
27	mr	%r10,%r1
28	mr	%r9,%r2
29	mr	%r8,%r3
30	stmw	%r8,4(%r6)
31	li	%r3,0
32	blr
33END(setjmp)
34
35ENTRY(longjmp)
36	lmw	%r8,4(%r3)
37	mr	%r6,%r4
38	mtlr	%r11
39	mtcr	%r12
40	mr	%r2,%r9
41	mr	%r1,%r10
42	mr	%r4,%r8
43	li	%r3,SIG_SETMASK
44	_DOSYSCALL(compat_13_sigprocmask13) # assume no error	XXX
45	or.	%r3,%r6,%r6
46	bnelr
47	li	%r3,1
48	blr
49END(longjmp)
50