1#ifndef _ASMARM_SIGNAL_H 2#define _ASMARM_SIGNAL_H 3 4#include <linux/types.h> 5 6/* Avoid too many header ordering problems. */ 7struct 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 17typedef unsigned long old_sigset_t; /* at least 32 bits */ 18 19typedef 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 27typedef 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_IRQNOMASK 0x08000000 128#define SA_SHIRQ 0x04000000 129#endif 130 131#define SIG_BLOCK 0 /* for blocking signals */ 132#define SIG_UNBLOCK 1 /* for unblocking signals */ 133#define SIG_SETMASK 2 /* for setting the signal mask */ 134 135/* Type of a signal handler. */ 136typedef void (*__sighandler_t)(int); 137 138#define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 139#define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 140#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 141 142#ifdef __KERNEL__ 143struct old_sigaction { 144 __sighandler_t sa_handler; 145 old_sigset_t sa_mask; 146 unsigned long sa_flags; 147 void (*sa_restorer)(void); 148}; 149 150struct sigaction { 151 __sighandler_t sa_handler; 152 unsigned long sa_flags; 153 void (*sa_restorer)(void); 154 sigset_t sa_mask; /* mask last for extensibility */ 155}; 156 157struct k_sigaction { 158 struct sigaction sa; 159}; 160 161#else 162/* Here we must cater to libcs that poke about in kernel headers. */ 163 164struct sigaction { 165 union { 166 __sighandler_t _sa_handler; 167 void (*_sa_sigaction)(int, struct siginfo *, void *); 168 } _u; 169 sigset_t sa_mask; 170 unsigned long sa_flags; 171 void (*sa_restorer)(void); 172}; 173 174#define sa_handler _u._sa_handler 175#define sa_sigaction _u._sa_sigaction 176 177#endif /* __KERNEL__ */ 178 179typedef struct sigaltstack { 180 void *ss_sp; 181 int ss_flags; 182 size_t ss_size; 183} stack_t; 184 185#ifdef __KERNEL__ 186#include <asm/sigcontext.h> 187 188#define sigmask(sig) (1UL << ((sig) - 1)) 189 190#endif 191 192#endif 193