#ifndef _ASMi386_SIGNAL_H #define _ASMi386_SIGNAL_H #include <linux/types.h> #include <linux/linkage.h> #include <linux/time.h> #include <linux/compiler.h> /* Avoid too many header ordering problems. */ struct siginfo; #ifdef __KERNEL__ /* Most things should be clean enough to redefine this at will, if care is taken to make libc match. */ #define _NSIG 64 #define _NSIG_BPW 32 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) typedef unsigned long old_sigset_t; /* at least 32 bits */ typedef struct { unsigned long sig[_NSIG_WORDS]; } sigset_t; #else /* Here we must cater to libcs that poke about in kernel headers. */ #define NSIG 32 typedef unsigned long sigset_t; #endif /* __KERNEL__ */ #define SIGHUP 1 #define SIGINT 2 #define SIGQUIT 3 #define SIGILL 4 #define SIGTRAP 5 #define SIGABRT 6 #define SIGIOT 6 #define SIGBUS 7 #define SIGFPE 8 #define SIGKILL 9 #define SIGUSR1 10 #define SIGSEGV 11 #define SIGUSR2 12 #define SIGPIPE 13 #define SIGALRM 14 #define SIGTERM 15 #define SIGSTKFLT 16 #define SIGCHLD 17 #define SIGCONT 18 #define SIGSTOP 19 #define SIGTSTP 20 #define SIGTTIN 21 #define SIGTTOU 22 #define SIGURG 23 #define SIGXCPU 24 #define SIGXFSZ 25 #define SIGVTALRM 26 #define SIGPROF 27 #define SIGWINCH 28 #define SIGIO 29 #define SIGPOLL SIGIO /* #define SIGLOST 29 */ #define SIGPWR 30 #define SIGSYS 31 #define SIGUNUSED 31 /* These should not be considered constants from userland. */ #define SIGRTMIN 32 #define SIGRTMAX _NSIG /* * SA_FLAGS values: * * SA_ONSTACK indicates that a registered stack_t will be used. * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the * SA_RESTART flag to get restarting signals (which were the default long ago) * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. * SA_RESETHAND clears the handler when the signal is delivered. * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. * SA_NODEFER prevents the current signal from being masked in the handler. * * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single * Unix names RESETHAND and NODEFER respectively. */ #define SA_NOCLDSTOP 0x00000001u #define SA_NOCLDWAIT 0x00000002u #define SA_SIGINFO 0x00000004u #define SA_ONSTACK 0x08000000u #define SA_RESTART 0x10000000u #define SA_NODEFER 0x40000000u #define SA_RESETHAND 0x80000000u #define SA_NOMASK SA_NODEFER #define SA_ONESHOT SA_RESETHAND #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ #define SA_RESTORER 0x04000000 /* * sigaltstack controls */ #define SS_ONSTACK 1 #define SS_DISABLE 2 #define MINSIGSTKSZ 2048 #define SIGSTKSZ 8192 #include <asm-generic/signal.h> #ifdef __KERNEL__ struct old_sigaction { __sighandler_t sa_handler; old_sigset_t sa_mask; unsigned long sa_flags; __sigrestore_t sa_restorer; }; struct sigaction { __sighandler_t sa_handler; unsigned long sa_flags; __sigrestore_t sa_restorer; sigset_t sa_mask; /* mask last for extensibility */ }; struct k_sigaction { struct sigaction sa; }; #else /* Here we must cater to libcs that poke about in kernel headers. */ struct sigaction { union { __sighandler_t _sa_handler; void (*_sa_sigaction)(int, struct siginfo *, void *); } _u; sigset_t sa_mask; unsigned long sa_flags; void (*sa_restorer)(void); }; #define sa_handler _u._sa_handler #define sa_sigaction _u._sa_sigaction #endif /* __KERNEL__ */ typedef struct sigaltstack { void __user *ss_sp; int ss_flags; size_t ss_size; } stack_t; #ifdef __KERNEL__ #include <asm/sigcontext.h> #define __HAVE_ARCH_SIG_BITOPS #define sigaddset(set,sig) \ (__builtin_constant_p(sig) ? \ __const_sigaddset((set),(sig)) : \ __gen_sigaddset((set),(sig))) static __inline__ void __gen_sigaddset(sigset_t *set, int _sig) { __asm__("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); } static __inline__ void __const_sigaddset(sigset_t *set, int _sig) { unsigned long sig = _sig - 1; set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW); } #define sigdelset(set,sig) \ (__builtin_constant_p(sig) ? \ __const_sigdelset((set),(sig)) : \ __gen_sigdelset((set),(sig))) static __inline__ void __gen_sigdelset(sigset_t *set, int _sig) { __asm__("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); } static __inline__ void __const_sigdelset(sigset_t *set, int _sig) { unsigned long sig = _sig - 1; set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW)); } static __inline__ int __const_sigismember(sigset_t *set, int _sig) { unsigned long sig = _sig - 1; return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); } static __inline__ int __gen_sigismember(sigset_t *set, int _sig) { int ret; __asm__("btl %2,%1\n\tsbbl %0,%0" : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); return ret; } #define sigismember(set,sig) \ (__builtin_constant_p(sig) ? \ __const_sigismember((set),(sig)) : \ __gen_sigismember((set),(sig))) static __inline__ int sigfindinword(unsigned long word) { __asm__("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc"); return word; } struct pt_regs; extern int FASTCALL(do_signal(struct pt_regs *regs, sigset_t *oldset)); #define ptrace_signal_deliver(regs, cookie) \ do { \ if (current->ptrace & PT_DTRACE) { \ current->ptrace &= ~PT_DTRACE; \ (regs)->eflags &= ~TF_MASK; \ } \ } while (0) #endif /* __KERNEL__ */ #endif