1 /* $NetBSD: signal.h,v 1.8 2003/01/18 07:10:33 thorpej 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)signal.h 7.16 (Berkeley) 3/17/91 36 */ 37 38 /* All bugs are subject to removal without further notice */ 39 40 #ifndef _VAX_SIGNAL_H_ 41 #define _VAX_SIGNAL_H_ 42 43 typedef int sig_atomic_t; 44 45 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 46 !defined(_XOPEN_SOURCE) 47 /* 48 * Information pushed on stack when a signal is delivered. 49 * This is used by the kernel to restore state following 50 * execution of the signal handler. It is also made available 51 * to the handler to allow it to restore state properly if 52 * a non-standard exit is performed. 53 */ 54 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 55 struct sigcontext13 { 56 int sc_onstack; /* sigstack state to restore */ 57 int sc_mask; /* signal mask to restore (old style) */ 58 int sc_sp; /* sp to restore */ 59 int sc_fp; /* fp to restore */ 60 int sc_ap; /* ap to restore */ 61 int sc_pc; /* pc to restore */ 62 int sc_ps; /* psl to restore */ 63 }; 64 #endif /* __LIBC12_SOURCE__ || _KERNEL */ 65 66 struct sigcontext { 67 int sc_onstack; /* sigstack state to restore */ 68 int __sc_mask13; /* signal mask to restore (old style) */ 69 int sc_sp; /* sp to restore */ 70 int sc_fp; /* fp to restore */ 71 int sc_ap; /* ap to restore */ 72 int sc_pc; /* pc to restore */ 73 int sc_ps; /* psl to restore */ 74 sigset_t sc_mask; /* signal mask to restore (new style) */ 75 }; 76 77 /* 78 * The following macros are used to convert from a ucontext to sigcontext, 79 * and vice-versa. This is for building a sigcontext to deliver to old-style 80 * signal handlers, and converting back (in the event the handler modifies 81 * the context). 82 */ 83 #define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 84 do { \ 85 (sc)->sc_sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \ 86 (sc)->sc_fp = (uc)->uc_mcontext.__gregs[_REG_FP]; \ 87 (sc)->sc_ap = (uc)->uc_mcontext.__gregs[_REG_AP]; \ 88 (sc)->sc_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 89 (sc)->sc_ps = (uc)->uc_mcontext.__gregs[_REG_PSL]; \ 90 } while (/*CONSTCOND*/0) 91 92 #define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 93 do { \ 94 (uc)->uc_mcontext.__gregs[_REG_SP] = (sc)->sc_sp; \ 95 (uc)->uc_mcontext.__gregs[_REG_FP] = (sc)->sc_fp; \ 96 (uc)->uc_mcontext.__gregs[_REG_AP] = (sc)->sc_ap; \ 97 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_pc; \ 98 (uc)->uc_mcontext.__gregs[_REG_PSL] = (sc)->sc_ps; \ 99 } while (/*CONSTCOND*/0) 100 101 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 102 #endif /* !_VAX_SIGNAL_H_ */ 103