1 #ifndef _ASMAXP_SIGNAL_H 2 #define _ASMAXP_SIGNAL_H 3 4 #include <linux/types.h> 5 6 /* Avoid too many header ordering problems. */ 7 struct siginfo; 8 9 #ifdef __KERNEL__ 10 /* Digital Unix defines 64 signals. Most things should be clean enough 11 to redefine this at will, if care is taken to make libc match. */ 12 13 #define _NSIG 64 14 #define _NSIG_BPW 64 15 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) 16 17 typedef unsigned long old_sigset_t; /* at least 32 bits */ 18 19 typedef struct { 20 unsigned long sig[_NSIG_WORDS]; 21 } sigset_t; 22 23 #else 24 /* Here we must cater to libcs that poke about in kernel headers. */ 25 26 #define NSIG 32 27 typedef unsigned long sigset_t; 28 29 #endif /* __KERNEL__ */ 30 31 32 /* 33 * Linux/AXP has different signal numbers that Linux/i386: I'm trying 34 * to make it OSF/1 binary compatible, at least for normal binaries. 35 */ 36 #define SIGHUP 1 37 #define SIGINT 2 38 #define SIGQUIT 3 39 #define SIGILL 4 40 #define SIGTRAP 5 41 #define SIGABRT 6 42 #define SIGEMT 7 43 #define SIGFPE 8 44 #define SIGKILL 9 45 #define SIGBUS 10 46 #define SIGSEGV 11 47 #define SIGSYS 12 48 #define SIGPIPE 13 49 #define SIGALRM 14 50 #define SIGTERM 15 51 #define SIGURG 16 52 #define SIGSTOP 17 53 #define SIGTSTP 18 54 #define SIGCONT 19 55 #define SIGCHLD 20 56 #define SIGTTIN 21 57 #define SIGTTOU 22 58 #define SIGIO 23 59 #define SIGXCPU 24 60 #define SIGXFSZ 25 61 #define SIGVTALRM 26 62 #define SIGPROF 27 63 #define SIGWINCH 28 64 #define SIGINFO 29 65 #define SIGUSR1 30 66 #define SIGUSR2 31 67 68 #define SIGPOLL SIGIO 69 #define SIGPWR SIGINFO 70 #define SIGIOT SIGABRT 71 72 /* These should not be considered constants from userland. */ 73 #define SIGRTMIN 32 74 #define SIGRTMAX (_NSIG-1) 75 76 /* 77 * SA_FLAGS values: 78 * 79 * SA_ONSTACK indicates that a registered stack_t will be used. 80 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the 81 * SA_RESTART flag to get restarting signals (which were the default long ago) 82 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 83 * SA_RESETHAND clears the handler when the signal is delivered. 84 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 85 * SA_NODEFER prevents the current signal from being masked in the handler. 86 * 87 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 88 * Unix names RESETHAND and NODEFER respectively. 89 */ 90 91 #define SA_ONSTACK 0x00000001 92 #define SA_RESTART 0x00000002 93 #define SA_NOCLDSTOP 0x00000004 94 #define SA_NODEFER 0x00000008 95 #define SA_RESETHAND 0x00000010 96 #define SA_NOCLDWAIT 0x00000020 /* not supported yet */ 97 #define SA_SIGINFO 0x00000040 98 99 #define SA_ONESHOT SA_RESETHAND 100 #define SA_NOMASK SA_NODEFER 101 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ 102 103 /* 104 * sigaltstack controls 105 */ 106 #define SS_ONSTACK 1 107 #define SS_DISABLE 2 108 109 #define MINSIGSTKSZ 4096 110 #define SIGSTKSZ 16384 111 112 113 #ifdef __KERNEL__ 114 /* 115 * These values of sa_flags are used only by the kernel as part of the 116 * irq handling routines. 117 * 118 * SA_INTERRUPT is also used by the irq handling routines. 119 * SA_SHIRQ is for shared interrupt support on PCI and EISA. 120 */ 121 #define SA_PROBE SA_ONESHOT 122 #define SA_SAMPLE_RANDOM SA_RESTART 123 #define SA_SHIRQ 0x40000000 124 #endif 125 126 #define SIG_BLOCK 1 /* for blocking signals */ 127 #define SIG_UNBLOCK 2 /* for unblocking signals */ 128 #define SIG_SETMASK 3 /* for setting the signal mask */ 129 130 /* Type of a signal handler. */ 131 typedef void (*__sighandler_t)(int); 132 133 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 134 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 135 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 136 137 #ifdef __KERNEL__ 138 struct osf_sigaction { 139 __sighandler_t sa_handler; 140 old_sigset_t sa_mask; 141 int sa_flags; 142 }; 143 144 struct sigaction { 145 __sighandler_t sa_handler; 146 unsigned long sa_flags; 147 sigset_t sa_mask; /* mask last for extensibility */ 148 }; 149 150 struct k_sigaction { 151 struct sigaction sa; 152 void (*ka_restorer)(void); 153 }; 154 #else 155 /* Here we must cater to libcs that poke about in kernel headers. */ 156 157 struct sigaction { 158 union { 159 __sighandler_t _sa_handler; 160 void (*_sa_sigaction)(int, struct siginfo *, void *); 161 } _u; 162 sigset_t sa_mask; 163 int sa_flags; 164 }; 165 166 #define sa_handler _u._sa_handler 167 #define sa_sigaction _u._sa_sigaction 168 169 #endif /* __KERNEL__ */ 170 171 typedef struct sigaltstack { 172 void *ss_sp; 173 int ss_flags; 174 size_t ss_size; 175 } stack_t; 176 177 /* sigstack(2) is deprecated, and will be withdrawn in a future version 178 of the X/Open CAE Specification. Use sigaltstack instead. It is only 179 implemented here for OSF/1 compatibility. */ 180 181 struct sigstack { 182 void *ss_sp; 183 int ss_onstack; 184 }; 185 186 #ifdef __KERNEL__ 187 #include <asm/sigcontext.h> 188 #endif 189 190 #endif 191