1/*        $NetBSD: compat_sigsetjmp.S,v 1.4 2025/04/24 01:42:38 riastradh Exp $ */
2
3/*-
4 * Copyright (c) 1991, 1993, 1995,
5 *        The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Havard Eidnes.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/syscall.h>
36#include <mips/asm.h>
37#include <mips/regdef.h>
38
39#include "assym.h"
40
41#if defined(LIBC_SCCS) && !defined(lint)
42#if 0
43          ASMSTR("from: @(#)setjmp.s    8.1 (Berkeley) 6/4/93")
44#else
45          ASMSTR("$NetBSD: compat_sigsetjmp.S,v 1.4 2025/04/24 01:42:38 riastradh Exp $")
46#endif
47#endif /* LIBC_SCCS and not lint */
48
49/*
50 * C library -- sigsetjmp, siglongjmp
51 *
52 *        siglongjmp(a,v)
53 * will generate a "return(v)" from
54 * the last call to
55 *        sigsetjmp(a, savemask)
56 * by restoring registers from the stack,
57 * and dependent on savemask restores the
58 * signal mask.
59 */
60
61LEAF(sigsetjmp)
62          SETUP_GP
63          SETUP_GP64(t0, sigsetjmp)
64          INT_S     a1, _SC_MASK13(a0)            # save "savemask"
65          bne       a1, 0x0, 1f                             # do saving of signal mask?
66          PTR_LA    t9, _C_LABEL(_setjmp)
67          RESTORE_GP64
68          jr        t9
69
701:        PTR_LA    t9, _C_LABEL(setjmp)
71          RESTORE_GP64
72          jr        t9
73END(sigsetjmp)
74
75LEAF(siglongjmp)
76          SETUP_GP
77          SETUP_GP64(t0, siglongjmp)
78          INT_L     t1, _SC_MASK13(a0)            # get "savemask"
79          bne       t1, 0x0, 1f                             # restore signal mask?
80          PTR_LA    t9, _C_LABEL(_longjmp)
81          jr        t9
82
831:        PTR_LA    t9, _C_LABEL(longjmp)
84          jr        t9
85END(siglongjmp)
86