2 * Copyright (c) 1980, 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
11 * notice, this list of conditions and the following disclaimer in the
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
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #if defined(LIBC_SCCS) && !defined(lint)
31 /* .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" */
32 .asciz "$NetBSD: _setjmp.S,v 1.9 2003/08/07 16:42:31 agc Exp $"
33 #endif /* LIBC_SCCS and not lint */
36 * C library -- _setjmp, _longjmp
39 * will generate a "return(v)" from
42 * by restoring registers from the stack,
43 * The previous signal state is NOT restored.
45 * Even though we don't use sigreturn14, we still store things in a sigcontext
46 * in order to be consistent.
53 movl 12(%fp),12(%r0) # save frame pointer of caller
54 movl 16(%fp),20(%r0) # save pc of caller
56 movl 8(%fp),16(%r0) # save ap of caller
57 clrl %r1 # clear arg count
58 bbc $13,6(%fp),1f # was this a callg?
59 addl3 $1,(%ap),%r1 # get real arg count+1 for calls
60 1: moval 24(%fp)[%r1],8(%r0) # save sp of caller
61 movpsl 24(%r0) # save current psl
62 movw 4(%fp),24(%r0) # save psw of caller
63 movq %r6,44(%r0) # save r6/r7
64 movq %r8,52(%r0) # save r8/r9
65 movq %r10,60(%r0) # save r10/r11
71 movl 8(%ap),%r0 # return(v)
72 movl 4(%ap),%r1 # fetch buffer
73 tstl 12(%r1) # is fp null
76 movq 44(%r1),%r6 # restore r6/r7
77 movq 52(%r1),%r8 # restore r8/r9
78 movq 60(%r1),%r10 # restore r10/r11
79 movl 16(%r1),%ap # restore ap
80 movl 8(%r1),%sp # restore sp
81 movl 12(%r1),%fp # restore fp
82 movq 20(%r1),-(%sp) # save pc/psl to new stack
83 rei # and go back to saved pc/psl
86 bitw $1,6(%fp) # %r0 saved?
89 bitw $2,6(%fp) # was %r1 saved?
94 bitw $2,6(%fp) # was %r1 saved?
102 ret # pop another frame
105 cmpb *16(%fp),$2 # returning to an "rei"?
107 movab 3f,16(%fp) # do return w/ psl-pc pop
110 movab 4f,16(%fp) # do standard return
112 ret # unwind stack before signals enabled
114 addl2 $8,%sp # compensate for PSL-PC push
116 jmp *20(%r1) # done, return....
117 #endif /* !__ELF__ */
120 calls $0,_C_LABEL(longjmperror)