1/*        $NetBSD: __setjmp14.S,v 1.6 2023/10/11 09:12:21 skrll Exp $ */
2
3#include "SYS.h"
4#include "assym.h"
5
6#if defined(LIBC_SCCS)
7__RCSID("$NetBSD: __setjmp14.S,v 1.6 2023/10/11 09:12:21 skrll 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(__setjmp14)
21          mr        %r6,%r3
22          li        %r3,0                         # how is ignored
23          li        %r4,0                         # set = NULL
24          addi      %r5,%r6,4*(1+24)    # &sigmask
25          _DOSYSCALL(__sigprocmask14)   # assume no error   XXX
26          mflr      %r11
27          mfcr      %r12
28          mr        %r10,%r1
29          mr        %r9,%r2
30          stmw      %r8,4(%r6)                    # save r8-r31
31          li        %r3,0
32          blr
33END(__setjmp14)
34
35ENTRY(__longjmp14)
36          lmw       %r8,4(%r3)                    # load r8-r31
37          mr        %r6,%r4
38          mtlr      %r11
39          mtcr      %r12
40          mr        %r2,%r9
41          mr        %r1,%r10
42          addi      %r4,%r3,4*(1+24)    # &sigmask
43          li        %r3,SIG_SETMASK
44          li        %r5,0
45          _DOSYSCALL(__sigprocmask14)   # assume no error   XXX
46          or.       %r3,%r6,%r6
47          bnelr
48          li        %r3,1
49          blr
50END(__longjmp14)
51