1 #ifndef __ASM_SH_SIGNAL_H 2 #define __ASM_SH_SIGNAL_H 3 4 #include <linux/types.h> 5 6 /* Avoid too many header ordering problems. */ 7 struct siginfo; 8 9 #define _NSIG 64 10 #define _NSIG_BPW 32 11 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) 12 13 typedef unsigned long old_sigset_t; /* at least 32 bits */ 14 15 typedef struct { 16 unsigned long sig[_NSIG_WORDS]; 17 } sigset_t; 18 19 #define SIGHUP 1 20 #define SIGINT 2 21 #define SIGQUIT 3 22 #define SIGILL 4 23 #define SIGTRAP 5 24 #define SIGABRT 6 25 #define SIGIOT 6 26 #define SIGBUS 7 27 #define SIGFPE 8 28 #define SIGKILL 9 29 #define SIGUSR1 10 30 #define SIGSEGV 11 31 #define SIGUSR2 12 32 #define SIGPIPE 13 33 #define SIGALRM 14 34 #define SIGTERM 15 35 #define SIGSTKFLT 16 36 #define SIGCHLD 17 37 #define SIGCONT 18 38 #define SIGSTOP 19 39 #define SIGTSTP 20 40 #define SIGTTIN 21 41 #define SIGTTOU 22 42 #define SIGURG 23 43 #define SIGXCPU 24 44 #define SIGXFSZ 25 45 #define SIGVTALRM 26 46 #define SIGPROF 27 47 #define SIGWINCH 28 48 #define SIGIO 29 49 #define SIGPOLL SIGIO 50 /* 51 #define SIGLOST 29 52 */ 53 #define SIGPWR 30 54 #define SIGSYS 31 55 #define SIGUNUSED 31 56 57 /* These should not be considered constants from userland. */ 58 #define SIGRTMIN 32 59 #define SIGRTMAX (_NSIG-1) 60 61 /* 62 * SA_FLAGS values: 63 * 64 * SA_ONSTACK indicates that a registered stack_t will be used. 65 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the 66 * SA_RESTART flag to get restarting signals (which were the default long ago) 67 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 68 * SA_RESETHAND clears the handler when the signal is delivered. 69 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 70 * SA_NODEFER prevents the current signal from being masked in the handler. 71 * 72 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 73 * Unix names RESETHAND and NODEFER respectively. 74 */ 75 #define SA_NOCLDSTOP 0x00000001 76 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */ 77 #define SA_SIGINFO 0x00000004 78 #define SA_ONSTACK 0x08000000 79 #define SA_RESTART 0x10000000 80 #define SA_NODEFER 0x40000000 81 #define SA_RESETHAND 0x80000000 82 83 #define SA_NOMASK SA_NODEFER 84 #define SA_ONESHOT SA_RESETHAND 85 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ 86 87 #define SA_RESTORER 0x04000000 88 89 /* 90 * sigaltstack controls 91 */ 92 #define SS_ONSTACK 1 93 #define SS_DISABLE 2 94 95 #define MINSIGSTKSZ 2048 96 #define SIGSTKSZ 8192 97 98 #ifdef __KERNEL__ 99 100 /* 101 * These values of sa_flags are used only by the kernel as part of the 102 * irq handling routines. 103 * 104 * SA_INTERRUPT is also used by the irq handling routines. 105 * SA_SHIRQ is for shared interrupt support on PCI and EISA. 106 */ 107 #define SA_PROBE SA_ONESHOT 108 #define SA_SAMPLE_RANDOM SA_RESTART 109 #define SA_SHIRQ 0x04000000 110 #endif 111 112 #define SIG_BLOCK 0 /* for blocking signals */ 113 #define SIG_UNBLOCK 1 /* for unblocking signals */ 114 #define SIG_SETMASK 2 /* for setting the signal mask */ 115 116 /* Type of a signal handler. */ 117 typedef void (*__sighandler_t)(int); 118 119 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 120 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 121 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 122 123 #ifdef __KERNEL__ 124 struct old_sigaction { 125 __sighandler_t sa_handler; 126 old_sigset_t sa_mask; 127 unsigned long sa_flags; 128 void (*sa_restorer)(void); 129 }; 130 131 struct sigaction { 132 __sighandler_t sa_handler; 133 unsigned long sa_flags; 134 void (*sa_restorer)(void); 135 sigset_t sa_mask; /* mask last for extensibility */ 136 }; 137 138 struct k_sigaction { 139 struct sigaction sa; 140 }; 141 #else 142 /* Here we must cater to libcs that poke about in kernel headers. */ 143 144 struct sigaction { 145 union { 146 __sighandler_t _sa_handler; 147 void (*_sa_sigaction)(int, struct siginfo *, void *); 148 } _u; 149 sigset_t sa_mask; 150 unsigned long sa_flags; 151 void (*sa_restorer)(void); 152 }; 153 154 #define sa_handler _u._sa_handler 155 #define sa_sigaction _u._sa_sigaction 156 157 #endif /* __KERNEL__ */ 158 159 typedef struct sigaltstack { 160 void *ss_sp; 161 int ss_flags; 162 size_t ss_size; 163 } stack_t; 164 165 #ifdef __KERNEL__ 166 #include <asm/sigcontext.h> 167 168 #define sigmask(sig) (1UL << ((sig) - 1)) 169 170 #endif /* __KERNEL__ */ 171 172 #endif /* __ASM_SH_SIGNAL_H */ 173