1 /* $NetBSD: signal.h,v 1.1 2002/06/05 01:04:23 fredette 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 typedef int sig_atomic_t; 33 34 #ifndef _POSIX_SOURCE 35 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 36 #endif 37 38 /* 39 * Information pushed on stack when a signal is delivered. 40 * This is used by the kernel to restore state following 41 * execution of the signal handler. It is also made available 42 * to the handler to allow it to restore state properly if 43 * a non-standard exit is performed. 44 */ 45 struct sigcontext { 46 int sc_onstack; /* sigstack state to restore */ 47 int __sc_mask13; /* signal mask to restore (old style) */ 48 int sc_sp; /* sp to restore */ 49 int sc_fp; /* fp to restore */ 50 int sc_ap; /* ap to restore */ 51 int sc_pcsqh; /* pc space queue (head) to restore */ 52 int sc_pcoqh; /* pc offset queue (head) to restore */ 53 int sc_pcsqt; /* pc space queue (tail) to restore */ 54 int sc_pcoqt; /* pc offset queue (tail) to restore */ 55 int sc_ps; /* psl to restore */ 56 sigset_t sc_mask; /* signal mask to restore (new style) */ 57 }; 58 59 #if defined(_KERNEL) 60 #include <hppa/frame.h> 61 62 /* 63 * Register state saved while kernel delivers a signal. 64 */ 65 struct sigstate { 66 int ss_flags; /* which of the following are valid */ 67 struct trapframe ss_frame; /* original exception frame */ 68 }; 69 70 #define SS_FPSTATE 0x01 71 #define SS_USERREGS 0x02 72 73 /* 74 * Stack frame layout when delivering a signal. 75 */ 76 struct sigframe { 77 struct sigcontext sf_sc; /* actual context */ 78 struct sigstate sf_state; /* state of the hardware */ 79 /* 80 * Everything below here must match the calling convention. 81 * Per that convention, sendsig must initialize very little; 82 * only sf_psp, sf_clup, sf_sl, and sf_edp must be set. 83 * Note that this layout matches the HPPA_FRAME_ macros 84 * in frame.h. 85 */ 86 u_int sf_arg3; 87 u_int sf_arg2; 88 u_int sf_arg1; 89 u_int sf_arg0; 90 u_int sf_edp; 91 u_int sf_esr4; 92 u_int sf_erp; 93 u_int sf_crp; 94 u_int sf_sl; 95 u_int sf_clup; 96 u_int sf_ep; 97 u_int sf_psp; 98 }; 99 100 #endif /* _KERNEL */ 101