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
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 REG_LI v0, 0xACEDBADE # sigcontext magic number
63 REG_S ra, (2 * SZREG)(a0) # sc_pc = return address
64 REG_S v0, (3 * SZREG)(a0) # saved in sc_regs[0]
65 REG_S s0, ((S0 + 3) * SZREG)(a0)
66 REG_S s1, ((S1 + 3) * SZREG)(a0)
67 REG_S s2, ((S2 + 3) * SZREG)(a0)
68 REG_S s3, ((S3 + 3) * SZREG)(a0)
69 REG_S s4, ((S4 + 3) * SZREG)(a0)
70 REG_S s5, ((S5 + 3) * SZREG)(a0)
71 REG_S s6, ((S6 + 3) * SZREG)(a0)
72 REG_S s7, ((S7 + 3) * SZREG)(a0)
73 REG_S sp, ((SP + 3) * SZREG)(a0)
74 REG_S s8, ((S8 + 3) * SZREG)(a0)
85 REG_L v0, (3 * SZREG)(a0) # get magic number
86 REG_L ra, (2 * SZREG)(a0)
87 bne v0, 0xACEDBADE, botch # jump if error
89 addu sp, sp, 32 # does not matter, sanity
90 REG_L s0, ((S0 + 3) * SZREG)(a0)
91 REG_L s1, ((S1 + 3) * SZREG)(a0)
92 REG_L s2, ((S2 + 3) * SZREG)(a0)
93 REG_L s3, ((S3 + 3) * SZREG)(a0)
94 REG_L s4, ((S4 + 3) * SZREG)(a0)
95 REG_L s5, ((S5 + 3) * SZREG)(a0)
96 REG_L s6, ((S6 + 3) * SZREG)(a0)
97 REG_L s7, ((S7 + 3) * SZREG)(a0)
98 REG_L sp, ((SP + 3) * SZREG)(a0)
99 REG_L s8, ((S8 + 3) * SZREG)(a0)
104 jal _C_LABEL(longjmperror)