2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <machine/regnum.h>
38 #include <machine/asm.h>
40 #if defined(LIBC_SCCS)
42 .asciz "$OpenBSD: _setjmp.S,v 1.5 1996/08/19 08:15:51 tholo Exp $"
43 #endif /* LIBC_SCCS */
46 * C library -- _setjmp, _longjmp
49 * will generate a "return(v)" from
52 * by restoring registers from the stack,
53 * The previous signal state is NOT restored.
58 li v0, 0xACEDBADE # sigcontext magic number
59 sw ra, (2 * 4)(a0) # sc_pc = return address
60 sw v0, (3 * 4)(a0) # saved in sc_regs[0]
61 sw s0, ((S0 + 3) * 4)(a0)
62 sw s1, ((S1 + 3) * 4)(a0)
63 sw s2, ((S2 + 3) * 4)(a0)
64 sw s3, ((S3 + 3) * 4)(a0)
65 sw s4, ((S4 + 3) * 4)(a0)
66 sw s5, ((S5 + 3) * 4)(a0)
67 sw s6, ((S6 + 3) * 4)(a0)
68 sw s7, ((S7 + 3) * 4)(a0)
69 sw sp, ((SP + 3) * 4)(a0)
70 sw s8, ((S8 + 3) * 4)(a0)
71 cfc1 v0, $31 # too bad cant check if FP used
72 swc1 $f20, ((20 + 38) * 4)(a0)
73 swc1 $f21, ((21 + 38) * 4)(a0)
74 swc1 $f22, ((22 + 38) * 4)(a0)
75 swc1 $f23, ((23 + 38) * 4)(a0)
76 swc1 $f24, ((24 + 38) * 4)(a0)
77 swc1 $f25, ((25 + 38) * 4)(a0)
78 swc1 $f26, ((26 + 38) * 4)(a0)
79 swc1 $f27, ((27 + 38) * 4)(a0)
80 swc1 $f28, ((28 + 38) * 4)(a0)
81 swc1 $f29, ((29 + 38) * 4)(a0)
82 swc1 $f30, ((30 + 38) * 4)(a0)
83 swc1 $f31, ((31 + 38) * 4)(a0)
84 sw v0, ((32 + 38) * 4)(a0)
95 lw v0, (3 * 4)(a0) # get magic number
97 bne v0, 0xACEDBADE, botch # jump if error
99 addu sp, sp, 32 # does not matter, sanity
100 lw s0, ((S0 + 3) * 4)(a0)
101 lw s1, ((S1 + 3) * 4)(a0)
102 lw s2, ((S2 + 3) * 4)(a0)
103 lw s3, ((S3 + 3) * 4)(a0)
104 lw s4, ((S4 + 3) * 4)(a0)
105 lw s5, ((S5 + 3) * 4)(a0)
106 lw s6, ((S6 + 3) * 4)(a0)
107 lw s7, ((S7 + 3) * 4)(a0)
108 lw v0, ((32 + 38) * 4)(a0) # get fpu status
109 lw sp, ((SP + 3) * 4)(a0)
110 lw s8, ((S8 + 3) * 4)(a0)
112 lwc1 $f20, ((20 + 38) * 4)(a0)
113 lwc1 $f21, ((21 + 38) * 4)(a0)
114 lwc1 $f22, ((22 + 38) * 4)(a0)
115 lwc1 $f23, ((23 + 38) * 4)(a0)
116 lwc1 $f24, ((24 + 38) * 4)(a0)
117 lwc1 $f25, ((25 + 38) * 4)(a0)
118 lwc1 $f26, ((26 + 38) * 4)(a0)
119 lwc1 $f27, ((27 + 38) * 4)(a0)
120 lwc1 $f28, ((28 + 38) * 4)(a0)
121 lwc1 $f29, ((29 + 38) * 4)(a0)
122 lwc1 $f30, ((30 + 38) * 4)(a0)
123 lwc1 $f31, ((31 + 38) * 4)(a0)
128 jal _C_LABEL(longjmperror)