1 #ifndef _ASMi386_SIGNAL_H
2 #define _ASMi386_SIGNAL_H
4 #include <linux/types.h>
5 #include <linux/linkage.h>
6 #include <linux/time.h>
7 #include <linux/compiler.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];
27 /* Here we must cater to libcs that poke about in kernel headers. */
30 typedef unsigned long sigset_t;
32 #endif /* __KERNEL__ */
72 /* These should not be considered constants from userland. */
74 #define SIGRTMAX _NSIG
79 * SA_ONSTACK indicates that a registered stack_t will be used.
80 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
81 * SA_RESTART flag to get restarting signals (which were the default long ago)
82 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
83 * SA_RESETHAND clears the handler when the signal is delivered.
84 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
85 * SA_NODEFER prevents the current signal from being masked in the handler.
87 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
88 * Unix names RESETHAND and NODEFER respectively.
90 #define SA_NOCLDSTOP 0x00000001u
91 #define SA_NOCLDWAIT 0x00000002u
92 #define SA_SIGINFO 0x00000004u
93 #define SA_ONSTACK 0x08000000u
94 #define SA_RESTART 0x10000000u
95 #define SA_NODEFER 0x40000000u
96 #define SA_RESETHAND 0x80000000u
98 #define SA_NOMASK SA_NODEFER
99 #define SA_ONESHOT SA_RESETHAND
100 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
102 #define SA_RESTORER 0x04000000
105 * sigaltstack controls
110 #define MINSIGSTKSZ 2048
111 #define SIGSTKSZ 8192
113 #include <asm-generic/signal.h>
116 struct old_sigaction {
117 __sighandler_t sa_handler;
118 old_sigset_t sa_mask;
119 unsigned long sa_flags;
120 __sigrestore_t sa_restorer;
124 __sighandler_t sa_handler;
125 unsigned long sa_flags;
126 __sigrestore_t sa_restorer;
127 sigset_t sa_mask; /* mask last for extensibility */
134 /* Here we must cater to libcs that poke about in kernel headers. */
138 __sighandler_t _sa_handler;
139 void (*_sa_sigaction)(int, struct siginfo *, void *);
142 unsigned long sa_flags;
143 void (*sa_restorer)(void);
146 #define sa_handler _u._sa_handler
147 #define sa_sigaction _u._sa_sigaction
149 #endif /* __KERNEL__ */
151 typedef struct sigaltstack {
158 #include <asm/sigcontext.h>
160 #define __HAVE_ARCH_SIG_BITOPS
162 #define sigaddset(set,sig) \
163 (__builtin_constant_p(sig) ? \
164 __const_sigaddset((set),(sig)) : \
165 __gen_sigaddset((set),(sig)))
167 static __inline__ void __gen_sigaddset(sigset_t *set, int _sig)
169 __asm__("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
172 static __inline__ void __const_sigaddset(sigset_t *set, int _sig)
174 unsigned long sig = _sig - 1;
175 set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
178 #define sigdelset(set,sig) \
179 (__builtin_constant_p(sig) ? \
180 __const_sigdelset((set),(sig)) : \
181 __gen_sigdelset((set),(sig)))
184 static __inline__ void __gen_sigdelset(sigset_t *set, int _sig)
186 __asm__("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
189 static __inline__ void __const_sigdelset(sigset_t *set, int _sig)
191 unsigned long sig = _sig - 1;
192 set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
195 static __inline__ int __const_sigismember(sigset_t *set, int _sig)
197 unsigned long sig = _sig - 1;
198 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
201 static __inline__ int __gen_sigismember(sigset_t *set, int _sig)
204 __asm__("btl %2,%1\n\tsbbl %0,%0"
205 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
209 #define sigismember(set,sig) \
210 (__builtin_constant_p(sig) ? \
211 __const_sigismember((set),(sig)) : \
212 __gen_sigismember((set),(sig)))
214 static __inline__ int sigfindinword(unsigned long word)
216 __asm__("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc");
222 #define ptrace_signal_deliver(regs, cookie) \
224 if (current->ptrace & PT_DTRACE) { \
225 current->ptrace &= ~PT_DTRACE; \
226 (regs)->eflags &= ~TF_MASK; \
230 #endif /* __KERNEL__ */