2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
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12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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31 * C library -- setjmp, longjmp
34 * will generate a "return(v)" from
37 * by restoring registers from the stack,
38 * and a struct sigcontext, see <signal.h>
44 #if defined(LIBC_SCCS) && !defined(lint)
45 /* .asciz "@(#)setjmp.s 8.1 (Berkeley) 6/4/93" */
46 RCSID("$NetBSD: __setjmp14.S,v 1.11 2011/01/25 02:38:15 matt Exp $")
47 #endif /* LIBC_SCCS and not lint */
50 movl 4(%ap),%r2 # construct sigcontext
51 subl2 $12,%sp # space for current struct sigstack
52 pushl %sp # get current values
53 pushl $0 # no new values
54 calls $4,_C_LABEL(__sigaltstack14) # pop args plus signal stack value
55 movl 4(%ap),%r2 # construct sigcontext
56 movl (%sp)+,(%r2) # save onsigstack status of caller
60 calls $3,_C_LABEL(__sigprocmask14) # get signal mask
61 addl3 $8,4(%ap),%r2 # point to sp in signal context
62 clrl %r0 # assume no stack arguments
63 bbc $13,6(%fp),1f # handle callg
64 addl3 $1,(%ap),%r0 # get argument count +1 if calls
65 1: moval 24(%fp)[%r0],(%r2)+ # save sp of caller
66 movl 12(%fp),(%r2)+ # save frame pointer of caller
67 movl 8(%fp),(%r2)+ # save argument pointer of caller
68 movl 16(%fp),(%r2)+ # save pc of caller
69 movpsl (%r2) # save current psl
70 movw 4(%fp),(%r2) # save psw of caller
71 addl3 $SC_LEN,4(%ap),%r2 # point to past signal context
72 movq %r6,(%r2)+ # save r6/r7
73 movq %r8,(%r2)+ # save r8/r9
74 movq %r10,(%r2)+ # save r10/r11