1 #ifndef _ASMARM_SIGNAL_H 2 #define _ASMARM_SIGNAL_H 3 4 #include <linux/types.h> 5 6 /* Avoid too many header ordering problems. */ 7 struct siginfo; 8 9 #ifdef __KERNEL__ 10 /* Most things should be clean enough to redefine this at will, if care 11 is taken to make libc match. */ 12 13 #define _NSIG 64 14 #define _NSIG_BPW 32 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 #define SIGHUP 1 32 #define SIGINT 2 33 #define SIGQUIT 3 34 #define SIGILL 4 35 #define SIGTRAP 5 36 #define SIGABRT 6 37 #define SIGIOT 6 38 #define SIGBUS 7 39 #define SIGFPE 8 40 #define SIGKILL 9 41 #define SIGUSR1 10 42 #define SIGSEGV 11 43 #define SIGUSR2 12 44 #define SIGPIPE 13 45 #define SIGALRM 14 46 #define SIGTERM 15 47 #define SIGSTKFLT 16 48 #define SIGCHLD 17 49 #define SIGCONT 18 50 #define SIGSTOP 19 51 #define SIGTSTP 20 52 #define SIGTTIN 21 53 #define SIGTTOU 22 54 #define SIGURG 23 55 #define SIGXCPU 24 56 #define SIGXFSZ 25 57 #define SIGVTALRM 26 58 #define SIGPROF 27 59 #define SIGWINCH 28 60 #define SIGIO 29 61 #define SIGPOLL SIGIO 62 /* 63 #define SIGLOST 29 64 */ 65 #define SIGPWR 30 66 #define SIGSYS 31 67 #define SIGUNUSED 31 68 69 /* These should not be considered constants from userland. */ 70 #define SIGRTMIN 32 71 #define SIGRTMAX (_NSIG-1) 72 73 #define SIGSWI 32 74 75 /* 76 * SA_FLAGS values: 77 * 78 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 79 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 80 * SA_SIGINFO deliver the signal with SIGINFO structs 81 * SA_THIRTYTWO delivers the signal in 32-bit mode, even if the task 82 * is running in 26-bit. 83 * SA_ONSTACK allows alternate signal stacks (see sigaltstack(2)). 84 * SA_RESTART flag to get restarting signals (which were the default long ago) 85 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the 86 * SA_NODEFER prevents the current signal from being masked in the handler. 87 * SA_RESETHAND clears the handler when the signal is delivered. 88 * 89 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 90 * Unix names RESETHAND and NODEFER respectively. 91 */ 92 #define SA_NOCLDSTOP 0x00000001 93 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */ 94 #define SA_SIGINFO 0x00000004 95 #define SA_THIRTYTWO 0x02000000 96 #define SA_RESTORER 0x04000000 97 #define SA_ONSTACK 0x08000000 98 #define SA_RESTART 0x10000000 99 #define SA_NODEFER 0x40000000 100 #define SA_RESETHAND 0x80000000 101 102 #define SA_NOMASK SA_NODEFER 103 #define SA_ONESHOT SA_RESETHAND 104 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ 105 106 107 /* 108 * sigaltstack controls 109 */ 110 #define SS_ONSTACK 1 111 #define SS_DISABLE 2 112 113 #define MINSIGSTKSZ 2048 114 #define SIGSTKSZ 8192 115 116 #ifdef __KERNEL__ 117 118 /* 119 * These values of sa_flags are used only by the kernel as part of the 120 * irq handling routines. 121 * 122 * SA_INTERRUPT is also used by the irq handling routines. 123 * SA_SHIRQ is for shared interrupt support on PCI and EISA. 124 */ 125 #define SA_PROBE 0x80000000 126 #define SA_SAMPLE_RANDOM 0x10000000 127 #define SA_SHIRQ 0x04000000 128 #endif 129 130 #define SIG_BLOCK 0 /* for blocking signals */ 131 #define SIG_UNBLOCK 1 /* for unblocking signals */ 132 #define SIG_SETMASK 2 /* for setting the signal mask */ 133 134 /* Type of a signal handler. */ 135 typedef void (*__sighandler_t)(int); 136 137 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 138 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 139 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 140 141 #ifdef __KERNEL__ 142 struct old_sigaction { 143 __sighandler_t sa_handler; 144 old_sigset_t sa_mask; 145 unsigned long sa_flags; 146 void (*sa_restorer)(void); 147 }; 148 149 struct sigaction { 150 __sighandler_t sa_handler; 151 unsigned long sa_flags; 152 void (*sa_restorer)(void); 153 sigset_t sa_mask; /* mask last for extensibility */ 154 }; 155 156 struct k_sigaction { 157 struct sigaction sa; 158 }; 159 160 #else 161 /* Here we must cater to libcs that poke about in kernel headers. */ 162 163 struct sigaction { 164 union { 165 __sighandler_t _sa_handler; 166 void (*_sa_sigaction)(int, struct siginfo *, void *); 167 } _u; 168 sigset_t sa_mask; 169 unsigned long sa_flags; 170 void (*sa_restorer)(void); 171 }; 172 173 #define sa_handler _u._sa_handler 174 #define sa_sigaction _u._sa_sigaction 175 176 #endif /* __KERNEL__ */ 177 178 typedef struct sigaltstack { 179 void *ss_sp; 180 int ss_flags; 181 size_t ss_size; 182 } stack_t; 183 184 #ifdef __KERNEL__ 185 #include <asm/sigcontext.h> 186 187 #define sigmask(sig) (1UL << ((sig) - 1)) 188 189 #endif 190 191 #endif 192