signal.h revision 1.10
1 /* $NetBSD: signal.h,v 1.10 2003/08/07 16:30:12 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)signal.h 7.16 (Berkeley) 3/17/91 32 */ 33 34 /* All bugs are subject to removal without further notice */ 35 36 #ifndef _VAX_SIGNAL_H_ 37 #define _VAX_SIGNAL_H_ 38 39 #include <sys/featuretest.h> 40 41 typedef int sig_atomic_t; 42 43 #if defined(_NETBSD_SOURCE) 44 /* 45 * Information pushed on stack when a signal is delivered. 46 * This is used by the kernel to restore state following 47 * execution of the signal handler. It is also made available 48 * to the handler to allow it to restore state properly if 49 * a non-standard exit is performed. 50 */ 51 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 52 struct sigcontext13 { 53 int sc_onstack; /* sigstack state to restore */ 54 int sc_mask; /* signal mask to restore (old style) */ 55 int sc_sp; /* sp to restore */ 56 int sc_fp; /* fp to restore */ 57 int sc_ap; /* ap to restore */ 58 int sc_pc; /* pc to restore */ 59 int sc_ps; /* psl to restore */ 60 }; 61 #endif /* __LIBC12_SOURCE__ || _KERNEL */ 62 63 struct sigcontext { 64 int sc_onstack; /* sigstack state to restore */ 65 int __sc_mask13; /* signal mask to restore (old style) */ 66 int sc_sp; /* sp to restore */ 67 int sc_fp; /* fp to restore */ 68 int sc_ap; /* ap to restore */ 69 int sc_pc; /* pc to restore */ 70 int sc_ps; /* psl to restore */ 71 sigset_t sc_mask; /* signal mask to restore (new style) */ 72 }; 73 74 /* 75 * The following macros are used to convert from a ucontext to sigcontext, 76 * and vice-versa. This is for building a sigcontext to deliver to old-style 77 * signal handlers, and converting back (in the event the handler modifies 78 * the context). 79 */ 80 #define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 81 do { \ 82 (sc)->sc_sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \ 83 (sc)->sc_fp = (uc)->uc_mcontext.__gregs[_REG_FP]; \ 84 (sc)->sc_ap = (uc)->uc_mcontext.__gregs[_REG_AP]; \ 85 (sc)->sc_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 86 (sc)->sc_ps = (uc)->uc_mcontext.__gregs[_REG_PSL]; \ 87 } while (/*CONSTCOND*/0) 88 89 #define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 90 do { \ 91 (uc)->uc_mcontext.__gregs[_REG_SP] = (sc)->sc_sp; \ 92 (uc)->uc_mcontext.__gregs[_REG_FP] = (sc)->sc_fp; \ 93 (uc)->uc_mcontext.__gregs[_REG_AP] = (sc)->sc_ap; \ 94 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_pc; \ 95 (uc)->uc_mcontext.__gregs[_REG_PSL] = (sc)->sc_ps; \ 96 } while (/*CONSTCOND*/0) 97 98 #endif /* _NETBSD_SOURCE */ 99 #endif /* !_VAX_SIGNAL_H_ */ 100
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