1 #ifndef _ASMx8664_SIGNAL_H
2 #define _ASMx8664_SIGNAL_H
5 #include <linux/types.h>
6 #include <linux/time.h>
8 /* Avoid too many header ordering problems. */
12 #include <linux/linkage.h>
13 /* Most things should be clean enough to redefine this at will, if care
14 is taken to make libc match. */
18 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
20 typedef unsigned long old_sigset_t; /* at least 32 bits */
23 unsigned long sig[_NSIG_WORDS];
28 /* Here we must cater to libcs that poke about in kernel headers. */
31 typedef unsigned long sigset_t;
33 #endif /* __KERNEL__ */
74 /* These should not be considered constants from userland. */
76 #define SIGRTMAX _NSIG
81 * SA_ONSTACK indicates that a registered stack_t will be used.
82 * SA_RESTART flag to get restarting signals (which were the default long ago)
83 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
84 * SA_RESETHAND clears the handler when the signal is delivered.
85 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
86 * SA_NODEFER prevents the current signal from being masked in the handler.
88 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
89 * Unix names RESETHAND and NODEFER respectively.
91 #define SA_NOCLDSTOP 0x00000001
92 #define SA_NOCLDWAIT 0x00000002
93 #define SA_SIGINFO 0x00000004
94 #define SA_ONSTACK 0x08000000
95 #define SA_RESTART 0x10000000
96 #define SA_NODEFER 0x40000000
97 #define SA_RESETHAND 0x80000000
99 #define SA_NOMASK SA_NODEFER
100 #define SA_ONESHOT SA_RESETHAND
102 #define SA_RESTORER 0x04000000
105 * sigaltstack controls
110 #define MINSIGSTKSZ 2048
111 #define SIGSTKSZ 8192
113 #include <asm-generic/signal.h>
118 __sighandler_t sa_handler;
119 unsigned long sa_flags;
120 __sigrestore_t sa_restorer;
121 sigset_t sa_mask; /* mask last for extensibility */
128 typedef struct sigaltstack {
135 #include <asm/sigcontext.h>
137 #undef __HAVE_ARCH_SIG_BITOPS
140 static inline void sigaddset(sigset_t *set, int _sig)
142 __asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
145 static inline void sigdelset(sigset_t *set, int _sig)
147 __asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
150 static inline int __const_sigismember(sigset_t *set, int _sig)
152 unsigned long sig = _sig - 1;
153 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1)));
156 static inline int __gen_sigismember(sigset_t *set, int _sig)
159 __asm__("btq %2,%1\n\tsbbq %0,%0"
160 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
164 #define sigismember(set,sig) \
165 (__builtin_constant_p(sig) ? \
166 __const_sigismember((set),(sig)) : \
167 __gen_sigismember((set),(sig)))
169 static inline int sigfindinword(unsigned long word)
171 __asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc");
177 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
179 #endif /* __KERNEL__ */