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