1 /* $NetBSD: signal.h,v 1.12 2003/04/28 23:16:22 bjh21 Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #ifndef _POWERPC_SIGNAL_H_ 34 #define _POWERPC_SIGNAL_H_ 35 36 #include <sys/featuretest.h> 37 38 typedef int sig_atomic_t; 39 40 #if defined(_NETBSD_SOURCE) 41 #include <machine/frame.h> 42 43 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 44 struct sigcontext13 { 45 int sc_onstack; /* saved onstack flag */ 46 int sc_mask; /* saved signal mask (old style) */ 47 struct utrapframe sc_frame; /* saved registers */ 48 }; 49 #endif /* __LIBC12_SOURCE__ || _KERNEL */ 50 51 struct sigcontext { 52 int sc_onstack; /* saved onstack flag */ 53 int __sc_mask13; /* saved signal mask (old style) */ 54 struct utrapframe sc_frame; /* saved registers */ 55 sigset_t sc_mask; /* saved signal mask (new style) */ 56 }; 57 58 /* 59 * The following macros are used to convert from a ucontext to sigcontext, 60 * and vice-versa. This is for building a sigcontext to deliver to old-style 61 * signal handlers, and converting back (in the event the handler modifies 62 * the context). 63 */ 64 #define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 65 do { \ 66 memcpy((sc)->sc_frame.fixreg, &(uc)->uc_mcontext.__gregs[_REG_R0], \ 67 sizeof((sc)->sc_frame.fixreg)); \ 68 (sc)->sc_frame.cr = (uc)->uc_mcontext.__gregs[_REG_CR]; \ 69 (sc)->sc_frame.lr = (uc)->uc_mcontext.__gregs[_REG_LR]; \ 70 (sc)->sc_frame.srr0 = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 71 (sc)->sc_frame.srr1 = (uc)->uc_mcontext.__gregs[_REG_MSR]; \ 72 (sc)->sc_frame.ctr = (uc)->uc_mcontext.__gregs[_REG_CTR]; \ 73 (sc)->sc_frame.xer = (uc)->uc_mcontext.__gregs[_REG_XER]; \ 74 (sc)->sc_frame.mq = (uc)->uc_mcontext.__gregs[_REG_MQ]; \ 75 (sc)->sc_frame.vrsave = (uc)->uc_mcontext.__vrf.__vrsave; \ 76 (sc)->sc_frame.spare = 0; \ 77 } while (/*CONSTCOND*/0) 78 79 #define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 80 do { \ 81 memcpy(&(uc)->uc_mcontext.__gregs[_REG_R0], (sc)->sc_frame.fixreg, \ 82 sizeof((sc)->sc_frame.fixreg)); \ 83 (uc)->uc_mcontext.__gregs[_REG_CR] = (sc)->sc_frame.cr; \ 84 (uc)->uc_mcontext.__gregs[_REG_LR] = (sc)->sc_frame.lr; \ 85 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_frame.srr0; \ 86 (uc)->uc_mcontext.__gregs[_REG_MSR] = (sc)->sc_frame.srr1; \ 87 (uc)->uc_mcontext.__gregs[_REG_CTR] = (sc)->sc_frame.ctr; \ 88 (uc)->uc_mcontext.__gregs[_REG_XER] = (sc)->sc_frame.xer; \ 89 (uc)->uc_mcontext.__gregs[_REG_MQ] = (sc)->sc_frame.mq; \ 90 (uc)->uc_mcontext.__vrf.__vrsave = (sc)->sc_frame.vrsave; \ 91 } while (/*CONSTCOND*/0) 92 93 struct sigframe { 94 struct sigcontext sf_sc; 95 }; 96 97 #endif /* _NETBSD_SOURCE */ 98 #endif /* !_POWERPC_SIGNAL_H_ */ 99