1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle 7 * Copyright (C) 1999 Silicon Graphics, Inc. 8 */ 9 #ifndef _ASM_SIGNAL_H 10 #define _ASM_SIGNAL_H 11 12 #include <linux/types.h> 13 14 #define _NSIG 128 15 #define NSIG 128 16 #define _NSIG_BPW (sizeof(unsigned long) * 8) 17 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) 18 19 typedef struct { 20 unsigned long sig[_NSIG_WORDS]; 21 } sigset_t; 22 23 typedef unsigned long old_sigset_t; /* at least 32 bits */ 24 25 #define SIGHUP 1 /* Hangup (POSIX). */ 26 #define SIGINT 2 /* Interrupt (ANSI). */ 27 #define SIGQUIT 3 /* Quit (POSIX). */ 28 #define SIGILL 4 /* Illegal instruction (ANSI). */ 29 #define SIGTRAP 5 /* Trace trap (POSIX). */ 30 #define SIGIOT 6 /* IOT trap (4.2 BSD). */ 31 #define SIGABRT SIGIOT /* Abort (ANSI). */ 32 #define SIGEMT 7 33 #define SIGFPE 8 /* Floating-point exception (ANSI). */ 34 #define SIGKILL 9 /* Kill, unblockable (POSIX). */ 35 #define SIGBUS 10 /* BUS error (4.2 BSD). */ 36 #define SIGSEGV 11 /* Segmentation violation (ANSI). */ 37 #define SIGSYS 12 38 #define SIGPIPE 13 /* Broken pipe (POSIX). */ 39 #define SIGALRM 14 /* Alarm clock (POSIX). */ 40 #define SIGTERM 15 /* Termination (ANSI). */ 41 #define SIGUSR1 16 /* User-defined signal 1 (POSIX). */ 42 #define SIGUSR2 17 /* User-defined signal 2 (POSIX). */ 43 #define SIGCHLD 18 /* Child status has changed (POSIX). */ 44 #define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */ 45 #define SIGPWR 19 /* Power failure restart (System V). */ 46 #define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */ 47 #define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */ 48 #define SIGIO 22 /* I/O now possible (4.2 BSD). */ 49 #define SIGPOLL SIGIO /* Pollable event occurred (System V). */ 50 #define SIGSTOP 23 /* Stop, unblockable (POSIX). */ 51 #define SIGTSTP 24 /* Keyboard stop (POSIX). */ 52 #define SIGCONT 25 /* Continue (POSIX). */ 53 #define SIGTTIN 26 /* Background read from tty (POSIX). */ 54 #define SIGTTOU 27 /* Background write to tty (POSIX). */ 55 #define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */ 56 #define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */ 57 #define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */ 58 #define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */ 59 60 /* These should not be considered constants from userland. */ 61 #define SIGRTMIN 32 62 #define SIGRTMAX _NSIG 63 64 /* 65 * SA_FLAGS values: 66 * 67 * SA_ONSTACK indicates that a registered stack_t will be used. 68 * SA_RESTART flag to get restarting signals (which were the default long ago) 69 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 70 * SA_RESETHAND clears the handler when the signal is delivered. 71 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 72 * SA_NODEFER prevents the current signal from being masked in the handler. 73 * 74 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 75 * Unix names RESETHAND and NODEFER respectively. 76 */ 77 #define SA_ONSTACK 0x08000000 78 #define SA_RESETHAND 0x80000000 79 #define SA_RESTART 0x10000000 80 #define SA_SIGINFO 0x00000008 81 #define SA_NODEFER 0x40000000 82 #define SA_NOCLDWAIT 0x00010000 83 #define SA_NOCLDSTOP 0x00000001 84 85 #define SA_NOMASK SA_NODEFER 86 #define SA_ONESHOT SA_RESETHAND 87 88 #define SA_RESTORER 0x04000000 /* Only for o32 */ 89 90 /* 91 * sigaltstack controls 92 */ 93 #define SS_ONSTACK 1 94 #define SS_DISABLE 2 95 96 #define MINSIGSTKSZ 2048 97 #define SIGSTKSZ 8192 98 99 #ifdef __KERNEL__ 100 101 #ifdef CONFIG_TRAD_SIGNALS 102 #define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO) 103 #else 104 #define sig_uses_siginfo(ka) (1) 105 #endif 106 #else 107 /*This declaration prevents the compiler warning generated by using the pointer 108 to siginfo in struct sigaction below */ 109 struct siginfo; 110 #endif /* __KERNEL__ */ 111 112 #define SIG_BLOCK 1 /* for blocking signals */ 113 #define SIG_UNBLOCK 2 /* for unblocking signals */ 114 #define SIG_SETMASK 3 /* for setting the signal mask */ 115 116 #include <asm-generic/signal.h> 117 118 struct sigaction { 119 unsigned int sa_flags; 120 union { 121 __sighandler_t sa_handler; /* !SA_SIGINFO */ 122 void (*sa_sigaction) (int, struct siginfo *, void *); /* SA_SIGINFO */ 123 } __sigaction_handler; 124 #define sa_handler __sigaction_handler.sa_handler 125 #define sa_sigaction __sigaction_handler.sa_sigaction 126 sigset_t sa_mask; 127 }; 128 129 struct k_sigaction { 130 struct sigaction sa; 131 }; 132 133 typedef struct sigaltstack { 134 void *ss_sp; 135 size_t ss_size; 136 int ss_flags; 137 } stack_t; 138 139 #ifdef __KERNEL__ 140 #include <asm/sigcontext.h> 141 #include <asm/siginfo.h> 142 143 #define ptrace_signal_deliver(regs, cookie) do { } while (0) 144 145 #endif /* __KERNEL__ */ 146 147 #endif /* _ASM_SIGNAL_H */ 148