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/asm.h>
42 #if defined(LIBC_SCCS)
44 .asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $"
45 #endif /* LIBC_SCCS */
49 * C library -- _setjmp, _longjmp
52 * will generate a "return(v)" from
55 * by restoring registers from the stack,
56 * The previous signal state is NOT restored.
61 REG_LI v0, _JB_MAGIC__SETJMP # sigcontext magic number
62 REG_S v0, (_JB_MAGIC * SZREG)(a0) # saved in sc_regs[0]
63 REG_S ra, (_JB_REG_RA * SZREG)(a0) # sc_pc = return address
64 REG_S s0, (_JB_REG_S0 * SZREG)(a0)
65 REG_S s1, (_JB_REG_S1 * SZREG)(a0)
66 REG_S s2, (_JB_REG_S2 * SZREG)(a0)
67 REG_S s3, (_JB_REG_S3 * SZREG)(a0)
68 REG_S s4, (_JB_REG_S4 * SZREG)(a0)
69 REG_S s5, (_JB_REG_S5 * SZREG)(a0)
70 REG_S s6, (_JB_REG_S6 * SZREG)(a0)
71 REG_S s7, (_JB_REG_S7 * SZREG)(a0)
72 REG_S sp, (_JB_REG_SP * SZREG)(a0)
73 REG_S s8, (_JB_REG_S8 * SZREG)(a0)
84 REG_L v0, (_JB_MAGIC * SZREG)(a0) # get magic number
85 REG_L ra, (_JB_REG_RA * SZREG)(a0)
86 bne v0, _JB_MAGIC__SETJMP, botch # jump if error
88 addu sp, sp, 32 # does not matter, sanity
89 REG_L s0, (_JB_REG_S0 * SZREG)(a0)
90 REG_L s1, (_JB_REG_S1 * SZREG)(a0)
91 REG_L s2, (_JB_REG_S2 * SZREG)(a0)
92 REG_L s3, (_JB_REG_S3 * SZREG)(a0)
93 REG_L s4, (_JB_REG_S4 * SZREG)(a0)
94 REG_L s5, (_JB_REG_S5 * SZREG)(a0)
95 REG_L s6, (_JB_REG_S6 * SZREG)(a0)
96 REG_L s7, (_JB_REG_S7 * SZREG)(a0)
97 REG_L sp, (_JB_REG_SP * SZREG)(a0)
98 REG_L s8, (_JB_REG_S8 * SZREG)(a0)
103 jal _C_LABEL(longjmperror)