1/* 2 * include/asm-xtensa/signal.h 3 * 4 * Swiped from SH. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 * 10 * Copyright (C) 2001 - 2005 Tensilica Inc. 11 */ 12 13#ifndef _XTENSA_SIGNAL_H 14#define _XTENSA_SIGNAL_H 15 16 17#define _NSIG 64 18#define _NSIG_BPW 32 19#define _NSIG_WORDS (_NSIG / _NSIG_BPW) 20 21#ifndef __ASSEMBLY__ 22 23#include <linux/types.h> 24 25/* Avoid too many header ordering problems. */ 26struct siginfo; 27typedef unsigned long old_sigset_t; /* at least 32 bits */ 28typedef struct { 29 unsigned long sig[_NSIG_WORDS]; 30} sigset_t; 31 32#endif 33 34#define SIGHUP 1 35#define SIGINT 2 36#define SIGQUIT 3 37#define SIGILL 4 38#define SIGTRAP 5 39#define SIGABRT 6 40#define SIGIOT 6 41#define SIGBUS 7 42#define SIGFPE 8 43#define SIGKILL 9 44#define SIGUSR1 10 45#define SIGSEGV 11 46#define SIGUSR2 12 47#define SIGPIPE 13 48#define SIGALRM 14 49#define SIGTERM 15 50#define SIGSTKFLT 16 51#define SIGCHLD 17 52#define SIGCONT 18 53#define SIGSTOP 19 54#define SIGTSTP 20 55#define SIGTTIN 21 56#define SIGTTOU 22 57#define SIGURG 23 58#define SIGXCPU 24 59#define SIGXFSZ 25 60#define SIGVTALRM 26 61#define SIGPROF 27 62#define SIGWINCH 28 63#define SIGIO 29 64#define SIGPOLL SIGIO 65/* #define SIGLOST 29 */ 66#define SIGPWR 30 67#define SIGSYS 31 68#define SIGUNUSED 31 69 70/* These should not be considered constants from userland. */ 71#define SIGRTMIN 32 72#define SIGRTMAX (_NSIG-1) 73 74/* 75 * SA_FLAGS values: 76 * 77 * SA_ONSTACK indicates that a registered stack_t will be used. 78 * SA_RESTART flag to get restarting signals (which were the default long ago) 79 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 80 * SA_RESETHAND clears the handler when the signal is delivered. 81 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 82 * SA_NODEFER prevents the current signal from being masked in the handler. 83 * 84 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 85 * Unix names RESETHAND and NODEFER respectively. 86 */ 87#define SA_NOCLDSTOP 0x00000001 88#define SA_NOCLDWAIT 0x00000002 /* not supported yet */ 89#define SA_SIGINFO 0x00000004 90#define SA_ONSTACK 0x08000000 91#define SA_RESTART 0x10000000 92#define SA_NODEFER 0x40000000 93#define SA_RESETHAND 0x80000000 94 95#define SA_NOMASK SA_NODEFER 96#define SA_ONESHOT SA_RESETHAND 97 98#define SA_RESTORER 0x04000000 99 100/* 101 * sigaltstack controls 102 */ 103#define SS_ONSTACK 1 104#define SS_DISABLE 2 105 106#define MINSIGSTKSZ 2048 107#define SIGSTKSZ 8192 108 109#ifndef __ASSEMBLY__ 110 111#define SIG_BLOCK 0 /* for blocking signals */ 112#define SIG_UNBLOCK 1 /* for unblocking signals */ 113#define SIG_SETMASK 2 /* for setting the signal mask */ 114 115/* Type of a signal handler. */ 116typedef void (*__sighandler_t)(int); 117 118#define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 119#define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 120#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 121 122#ifdef __KERNEL__ 123struct old_sigaction { 124 __sighandler_t sa_handler; 125 old_sigset_t sa_mask; 126 unsigned long sa_flags; 127 void (*sa_restorer)(void); 128}; 129 130struct sigaction { 131 __sighandler_t sa_handler; 132 unsigned long sa_flags; 133 void (*sa_restorer)(void); 134 sigset_t sa_mask; /* mask last for extensibility */ 135}; 136 137struct k_sigaction { 138 struct sigaction sa; 139}; 140 141#else 142 143/* Here we must cater to libcs that poke about in kernel headers. */ 144 145struct sigaction { 146 union { 147 __sighandler_t _sa_handler; 148 void (*_sa_sigaction)(int, struct siginfo *, void *); 149 } _u; 150 sigset_t sa_mask; 151 unsigned long sa_flags; 152 void (*sa_restorer)(void); 153}; 154 155#define sa_handler _u._sa_handler 156#define sa_sigaction _u._sa_sigaction 157 158#endif /* __KERNEL__ */ 159 160typedef struct sigaltstack { 161 void *ss_sp; 162 int ss_flags; 163 size_t ss_size; 164} stack_t; 165 166#ifdef __KERNEL__ 167#include <asm/sigcontext.h> 168#define ptrace_signal_deliver(regs, cookie) do { } while (0) 169 170#endif /* __KERNEL__ */ 171#endif /* __ASSEMBLY__ */ 172#endif /* _XTENSA_SIGNAL_H */ 173