1 #ifndef _ASMx8664_SIGNAL_H
2 #define _ASMx8664_SIGNAL_H
5 #include <linux/types.h>
6 #include <linux/linkage.h>
7 #include <linux/time.h>
9 /* Avoid too many header ordering problems. */
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 asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
32 /* Here we must cater to libcs that poke about in kernel headers. */
35 typedef unsigned long sigset_t;
37 #endif /* __KERNEL__ */
78 /* These should not be considered constants from userland. */
80 #define SIGRTMAX _NSIG
85 * SA_ONSTACK indicates that a registered stack_t will be used.
86 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
87 * SA_RESTART flag to get restarting signals (which were the default long ago)
88 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
89 * SA_RESETHAND clears the handler when the signal is delivered.
90 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
91 * SA_NODEFER prevents the current signal from being masked in the handler.
93 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
94 * Unix names RESETHAND and NODEFER respectively.
96 #define SA_NOCLDSTOP 0x00000001
97 #define SA_NOCLDWAIT 0x00000002
98 #define SA_SIGINFO 0x00000004
99 #define SA_ONSTACK 0x08000000
100 #define SA_RESTART 0x10000000
101 #define SA_NODEFER 0x40000000
102 #define SA_RESETHAND 0x80000000
104 #define SA_NOMASK SA_NODEFER
105 #define SA_ONESHOT SA_RESETHAND
106 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
108 #define SA_RESTORER 0x04000000
111 * sigaltstack controls
116 #define MINSIGSTKSZ 2048
117 #define SIGSTKSZ 8192
119 #define SIG_BLOCK 0 /* for blocking signals */
120 #define SIG_UNBLOCK 1 /* for unblocking signals */
121 #define SIG_SETMASK 2 /* for setting the signal mask */
124 /* Type of a signal handler. */
125 typedef void __signalfn_t(int);
126 typedef __signalfn_t __user *__sighandler_t;
128 typedef void __restorefn_t(void);
129 typedef __restorefn_t __user *__sigrestore_t;
131 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
132 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
133 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
136 __sighandler_t sa_handler;
137 unsigned long sa_flags;
138 __sigrestore_t sa_restorer;
139 sigset_t sa_mask; /* mask last for extensibility */
146 typedef struct sigaltstack {
153 #include <asm/sigcontext.h>
155 #undef __HAVE_ARCH_SIG_BITOPS
158 extern __inline__ void sigaddset(sigset_t *set, int _sig)
160 __asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
163 extern __inline__ void sigdelset(sigset_t *set, int _sig)
165 __asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
168 extern __inline__ int __const_sigismember(sigset_t *set, int _sig)
170 unsigned long sig = _sig - 1;
171 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1)));
174 extern __inline__ int __gen_sigismember(sigset_t *set, int _sig)
177 __asm__("btq %2,%1\n\tsbbq %0,%0"
178 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
182 #define sigismember(set,sig) \
183 (__builtin_constant_p(sig) ? \
184 __const_sigismember((set),(sig)) : \
185 __gen_sigismember((set),(sig)))
187 extern __inline__ int sigfindinword(unsigned long word)
189 __asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc");
195 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
197 #endif /* __KERNEL__ */