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. */ 26 struct siginfo; 27 typedef unsigned long old_sigset_t; /* at least 32 bits */ 28 typedef 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. */ 116 typedef 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__ 123 struct old_sigaction { 124 __sighandler_t sa_handler; 125 old_sigset_t sa_mask; 126 unsigned long sa_flags; 127 void (*sa_restorer)(void); 128 }; 129 130 struct 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 }; 136 137 struct k_sigaction { 138 struct sigaction sa; 139 }; 140 141 #else 142 143 /* Here we must cater to libcs that poke about in kernel headers. */ 144 145 struct 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__ */ 159 160 typedef 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