1 /* $NetBSD: signal.h,v 1.6 2011/01/02 18:07:02 skrll 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 #ifndef _HPPA_SIGNAL_H__ 29 #define _HPPA_SIGNAL_H__ 30 31 /* 32 * Machine-dependent signal definitions 33 */ 34 35 #include <sys/featuretest.h> 36 37 typedef int sig_atomic_t; 38 39 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 40 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 41 #endif 42 43 /* 44 * Information pushed on stack when a signal is delivered. 45 * This is used by the kernel to restore state following 46 * execution of the signal handler. It is also made available 47 * to the handler to allow it to restore state properly if 48 * a non-standard exit is performed. 49 */ 50 struct sigcontext { 51 int sc_onstack; /* sigstack state to restore */ 52 int __sc_mask13; /* signal mask to restore (old style) */ 53 int sc_sp; /* sp to restore */ 54 int sc_fp; /* fp to restore */ 55 int sc_ap; /* ap to restore */ 56 int sc_pcsqh; /* pc space queue (head) to restore */ 57 int sc_pcoqh; /* pc offset queue (head) to restore */ 58 int sc_pcsqt; /* pc space queue (tail) to restore */ 59 int sc_pcoqt; /* pc offset queue (tail) to restore */ 60 int sc_ps; /* psl to restore */ 61 sigset_t sc_mask; /* signal mask to restore (new style) */ 62 }; 63 64 #if defined(_KERNEL) 65 #include <hppa/frame.h> 66 67 /* 68 * Register state saved while kernel delivers a signal. 69 */ 70 struct sigstate { 71 int ss_flags; /* which of the following are valid */ 72 struct trapframe ss_frame; /* original exception frame */ 73 }; 74 75 #define SS_FPSTATE 0x01 76 #define SS_USERREGS 0x02 77 78 /* 79 * Stack frame layout when delivering a signal. 80 */ 81 struct sigframe { 82 struct sigcontext sf_sc; /* actual context */ 83 struct sigstate sf_state; /* state of the hardware */ 84 /* 85 * Everything below here must match the calling convention. 86 * Per that convention, sendsig must initialize very little; 87 * only sf_psp, sf_clup, sf_sl, and sf_edp must be set. 88 * Note that this layout matches the HPPA_FRAME_ macros 89 * in frame.h. 90 */ 91 u_int sf_arg3; 92 u_int sf_arg2; 93 u_int sf_arg1; 94 u_int sf_arg0; 95 u_int sf_edp; 96 u_int sf_esr4; 97 u_int sf_erp; 98 u_int sf_crp; 99 u_int sf_sl; 100 u_int sf_clup; 101 u_int sf_ep; 102 u_int sf_psp; 103 }; 104 105 #endif /* _KERNEL */ 106 107 #endif /* _HPPA_SIGNAL_H__ */ 108