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
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12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
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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
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39 #include <machine/regnum.h>
40 #include <machine/asm.h>
43 #if defined(LIBC_SCCS)
45 .asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $"
46 #endif /* LIBC_SCCS */
50 * C library -- _setjmp, _longjmp
53 * will generate a "return(v)" from
56 * by restoring registers from the stack,
57 * The previous signal state is NOT restored.
62 li v0, 0xACEDBADE # sigcontext magic number
63 sw ra, (2 * 4)(a0) # sc_pc = return address
64 sw v0, (3 * 4)(a0) # saved in sc_regs[0]
65 sw s0, ((S0 + 3) * 4)(a0)
66 sw s1, ((S1 + 3) * 4)(a0)
67 sw s2, ((S2 + 3) * 4)(a0)
68 sw s3, ((S3 + 3) * 4)(a0)
69 sw s4, ((S4 + 3) * 4)(a0)
70 sw s5, ((S5 + 3) * 4)(a0)
71 sw s6, ((S6 + 3) * 4)(a0)
72 sw s7, ((S7 + 3) * 4)(a0)
73 sw sp, ((SP + 3) * 4)(a0)
74 sw s8, ((S8 + 3) * 4)(a0)
75 cfc1 v0, $31 # too bad cant check if FP used
76 swc1 $f20, ((20 + 38) * 4)(a0)
77 swc1 $f21, ((21 + 38) * 4)(a0)
78 swc1 $f22, ((22 + 38) * 4)(a0)
79 swc1 $f23, ((23 + 38) * 4)(a0)
80 swc1 $f24, ((24 + 38) * 4)(a0)
81 swc1 $f25, ((25 + 38) * 4)(a0)
82 swc1 $f26, ((26 + 38) * 4)(a0)
83 swc1 $f27, ((27 + 38) * 4)(a0)
84 swc1 $f28, ((28 + 38) * 4)(a0)
85 swc1 $f29, ((29 + 38) * 4)(a0)
86 swc1 $f30, ((30 + 38) * 4)(a0)
87 swc1 $f31, ((31 + 38) * 4)(a0)
88 sw v0, ((32 + 38) * 4)(a0)
99 lw v0, (3 * 4)(a0) # get magic number
101 bne v0, 0xACEDBADE, botch # jump if error
103 addu sp, sp, 32 # does not matter, sanity
104 lw s0, ((S0 + 3) * 4)(a0)
105 lw s1, ((S1 + 3) * 4)(a0)
106 lw s2, ((S2 + 3) * 4)(a0)
107 lw s3, ((S3 + 3) * 4)(a0)
108 lw s4, ((S4 + 3) * 4)(a0)
109 lw s5, ((S5 + 3) * 4)(a0)
110 lw s6, ((S6 + 3) * 4)(a0)
111 lw s7, ((S7 + 3) * 4)(a0)
112 lw v0, ((32 + 38) * 4)(a0) # get fpu status
113 lw sp, ((SP + 3) * 4)(a0)
114 lw s8, ((S8 + 3) * 4)(a0)
115 /* Octeon does not have an FPU */
116 #if !defined(_MIPS_ARCH_OCTEON)
118 lwc1 $f20, ((20 + 38) * 4)(a0)
119 lwc1 $f21, ((21 + 38) * 4)(a0)
120 lwc1 $f22, ((22 + 38) * 4)(a0)
121 lwc1 $f23, ((23 + 38) * 4)(a0)
122 lwc1 $f24, ((24 + 38) * 4)(a0)
123 lwc1 $f25, ((25 + 38) * 4)(a0)
124 lwc1 $f26, ((26 + 38) * 4)(a0)
125 lwc1 $f27, ((27 + 38) * 4)(a0)
126 lwc1 $f28, ((28 + 38) * 4)(a0)
127 lwc1 $f29, ((29 + 38) * 4)(a0)
128 lwc1 $f30, ((30 + 38) * 4)(a0)
129 lwc1 $f31, ((31 + 38) * 4)(a0)
130 #endif /* _MIPS_ARCH_OCTEON */
135 jal _C_LABEL(longjmperror)