1*2fe8fb19SBen Gras /* $NetBSD: __longjmp14.c,v 1.4 2008/04/28 20:22:57 martin Exp $ */
2*2fe8fb19SBen Gras
3*2fe8fb19SBen Gras /*-
4*2fe8fb19SBen Gras * Copyright (c) 2003 The NetBSD Foundation, Inc.
5*2fe8fb19SBen Gras * All rights reserved.
6*2fe8fb19SBen Gras *
7*2fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation
8*2fe8fb19SBen Gras * by Christian Limpach and Matt Thomas.
9*2fe8fb19SBen Gras *
10*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without
11*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions
12*2fe8fb19SBen Gras * are met:
13*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright
14*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer.
15*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright
16*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the
17*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution.
18*2fe8fb19SBen Gras *
19*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*2fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*2fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*2fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*2fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*2fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*2fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*2fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*2fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*2fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*2fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE.
30*2fe8fb19SBen Gras */
31*2fe8fb19SBen Gras
32*2fe8fb19SBen Gras #include "namespace.h"
33*2fe8fb19SBen Gras #include <sys/types.h>
34*2fe8fb19SBen Gras #include <ucontext.h>
35*2fe8fb19SBen Gras #include <signal.h>
36*2fe8fb19SBen Gras #include <stdlib.h>
37*2fe8fb19SBen Gras #include <string.h>
38*2fe8fb19SBen Gras #include <machine/reg.h>
39*2fe8fb19SBen Gras
40*2fe8fb19SBen Gras #define __LIBC12_SOURCE__
41*2fe8fb19SBen Gras #include <setjmp.h>
42*2fe8fb19SBen Gras #include <compat/include/setjmp.h>
43*2fe8fb19SBen Gras
44*2fe8fb19SBen Gras struct _jmp_buf {
45*2fe8fb19SBen Gras struct sigcontext jb_sc;
46*2fe8fb19SBen Gras register_t jb_regs[6];
47*2fe8fb19SBen Gras };
48*2fe8fb19SBen Gras
49*2fe8fb19SBen Gras void
__longjmp14(jmp_buf env,int val)50*2fe8fb19SBen Gras __longjmp14(jmp_buf env, int val)
51*2fe8fb19SBen Gras {
52*2fe8fb19SBen Gras struct _jmp_buf *jb = (void *)env;
53*2fe8fb19SBen Gras ucontext_t uc;
54*2fe8fb19SBen Gras
55*2fe8fb19SBen Gras /* Ensure non-zero SP */
56*2fe8fb19SBen Gras if (jb->jb_sc.sc_sp == 0)
57*2fe8fb19SBen Gras goto err;
58*2fe8fb19SBen Gras
59*2fe8fb19SBen Gras /* Ensure non-zero return value */
60*2fe8fb19SBen Gras if (val == 0)
61*2fe8fb19SBen Gras val = -1;
62*2fe8fb19SBen Gras
63*2fe8fb19SBen Gras /* Set _UC_SIGMASK and _UC_CPU */
64*2fe8fb19SBen Gras uc.uc_flags = _UC_SIGMASK | _UC_CPU;
65*2fe8fb19SBen Gras
66*2fe8fb19SBen Gras /* Clear uc_link */
67*2fe8fb19SBen Gras uc.uc_link = 0;
68*2fe8fb19SBen Gras
69*2fe8fb19SBen Gras /* Save return value in context */
70*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R0] = val;
71*2fe8fb19SBen Gras
72*2fe8fb19SBen Gras /* Copy saved registers */
73*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_AP] = jb->jb_sc.sc_ap;
74*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_SP] = jb->jb_sc.sc_sp;
75*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_FP] = jb->jb_sc.sc_fp;
76*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_PC] = jb->jb_sc.sc_pc;
77*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_PSL] = jb->jb_sc.sc_ps;
78*2fe8fb19SBen Gras
79*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R6] = jb->jb_regs[0];
80*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R7] = jb->jb_regs[1];
81*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R8] = jb->jb_regs[2];
82*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R9] = jb->jb_regs[3];
83*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R10] = jb->jb_regs[4];
84*2fe8fb19SBen Gras uc.uc_mcontext.__gregs[_REG_R11] = jb->jb_regs[5];
85*2fe8fb19SBen Gras
86*2fe8fb19SBen Gras /* Copy signal mask */
87*2fe8fb19SBen Gras uc.uc_sigmask = jb->jb_sc.sc_mask;
88*2fe8fb19SBen Gras
89*2fe8fb19SBen Gras setcontext(&uc);
90*2fe8fb19SBen Gras err:
91*2fe8fb19SBen Gras longjmperror();
92*2fe8fb19SBen Gras abort();
93*2fe8fb19SBen Gras /* NOTREACHED */
94*2fe8fb19SBen Gras }
95