1 /* $NetBSD: signal.h,v 1.2 2003/04/28 23:16:19 bjh21 Exp $ */ 2 3 /* $OpenBSD: signal.h,v 1.1 1998/06/23 19:45:27 mickey Exp $ */ 4 5 /* 6 * Copyright (c) 1994, The University of Utah and 7 * the Computer Systems Laboratory at the University of Utah (CSL). 8 * All rights reserved. 9 * 10 * Permission to use, copy, modify and distribute this software is hereby 11 * granted provided that (1) source code retains these copyright, permission, 12 * and disclaimer notices, and (2) redistributions including binaries 13 * reproduce the notices in supporting documentation, and (3) all advertising 14 * materials mentioning features or use of this software display the following 15 * acknowledgement: ``This product includes software developed by the 16 * Computer Systems Laboratory at the University of Utah.'' 17 * 18 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS 19 * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF 20 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 21 * 22 * CSL requests users of this software to return to csl-dist@cs.utah.edu any 23 * improvements that they make and grant CSL redistribution rights. 24 * 25 * Utah $Hdr: signal.h 1.3 94/12/16$ 26 */ 27 28 /* 29 * Machine-dependent signal definitions 30 */ 31 32 #include <sys/featuretest.h> 33 34 typedef int sig_atomic_t; 35 36 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 37 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 38 #endif 39 40 /* 41 * Information pushed on stack when a signal is delivered. 42 * This is used by the kernel to restore state following 43 * execution of the signal handler. It is also made available 44 * to the handler to allow it to restore state properly if 45 * a non-standard exit is performed. 46 */ 47 struct sigcontext { 48 int sc_onstack; /* sigstack state to restore */ 49 int __sc_mask13; /* signal mask to restore (old style) */ 50 int sc_sp; /* sp to restore */ 51 int sc_fp; /* fp to restore */ 52 int sc_ap; /* ap to restore */ 53 int sc_pcsqh; /* pc space queue (head) to restore */ 54 int sc_pcoqh; /* pc offset queue (head) to restore */ 55 int sc_pcsqt; /* pc space queue (tail) to restore */ 56 int sc_pcoqt; /* pc offset queue (tail) to restore */ 57 int sc_ps; /* psl to restore */ 58 sigset_t sc_mask; /* signal mask to restore (new style) */ 59 }; 60 61 #if defined(_KERNEL) 62 #include <hppa/frame.h> 63 64 /* 65 * Register state saved while kernel delivers a signal. 66 */ 67 struct sigstate { 68 int ss_flags; /* which of the following are valid */ 69 struct trapframe ss_frame; /* original exception frame */ 70 }; 71 72 #define SS_FPSTATE 0x01 73 #define SS_USERREGS 0x02 74 75 /* 76 * Stack frame layout when delivering a signal. 77 */ 78 struct sigframe { 79 struct sigcontext sf_sc; /* actual context */ 80 struct sigstate sf_state; /* state of the hardware */ 81 /* 82 * Everything below here must match the calling convention. 83 * Per that convention, sendsig must initialize very little; 84 * only sf_psp, sf_clup, sf_sl, and sf_edp must be set. 85 * Note that this layout matches the HPPA_FRAME_ macros 86 * in frame.h. 87 */ 88 u_int sf_arg3; 89 u_int sf_arg2; 90 u_int sf_arg1; 91 u_int sf_arg0; 92 u_int sf_edp; 93 u_int sf_esr4; 94 u_int sf_erp; 95 u_int sf_crp; 96 u_int sf_sl; 97 u_int sf_clup; 98 u_int sf_ep; 99 u_int sf_psp; 100 }; 101 102 #endif /* _KERNEL */ 103