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Thomas Gleixner33185c52007-10-23 22:37:24 +02001#ifndef _ASM_X86_SIGNAL_H
2#define _ASM_X86_SIGNAL_H
3
4#ifndef __ASSEMBLY__
5#include <linux/types.h>
6#include <linux/time.h>
7#include <linux/compiler.h>
8
9/* Avoid too many header ordering problems. */
10struct siginfo;
11
Thomas Gleixner96a388d2007-10-11 11:20:03 +020012#ifdef __KERNEL__
Thomas Gleixner33185c52007-10-23 22:37:24 +020013#include <linux/linkage.h>
14
15/* Most things should be clean enough to redefine this at will, if care
16 is taken to make libc match. */
17
18#define _NSIG 64
19
20#ifdef __i386__
21# define _NSIG_BPW 32
Thomas Gleixner96a388d2007-10-11 11:20:03 +020022#else
Thomas Gleixner33185c52007-10-23 22:37:24 +020023# define _NSIG_BPW 64
24#endif
25
26#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
27
28typedef unsigned long old_sigset_t; /* at least 32 bits */
29
30typedef struct {
31 unsigned long sig[_NSIG_WORDS];
32} sigset_t;
33
34#else
35/* Here we must cater to libcs that poke about in kernel headers. */
36
37#define NSIG 32
38typedef unsigned long sigset_t;
39
40#endif /* __KERNEL__ */
41#endif /* __ASSEMBLY__ */
42
43#define SIGHUP 1
44#define SIGINT 2
45#define SIGQUIT 3
46#define SIGILL 4
47#define SIGTRAP 5
48#define SIGABRT 6
49#define SIGIOT 6
50#define SIGBUS 7
51#define SIGFPE 8
52#define SIGKILL 9
53#define SIGUSR1 10
54#define SIGSEGV 11
55#define SIGUSR2 12
56#define SIGPIPE 13
57#define SIGALRM 14
58#define SIGTERM 15
59#define SIGSTKFLT 16
60#define SIGCHLD 17
61#define SIGCONT 18
62#define SIGSTOP 19
63#define SIGTSTP 20
64#define SIGTTIN 21
65#define SIGTTOU 22
66#define SIGURG 23
67#define SIGXCPU 24
68#define SIGXFSZ 25
69#define SIGVTALRM 26
70#define SIGPROF 27
71#define SIGWINCH 28
72#define SIGIO 29
73#define SIGPOLL SIGIO
74/*
75#define SIGLOST 29
76*/
77#define SIGPWR 30
78#define SIGSYS 31
79#define SIGUNUSED 31
80
81/* These should not be considered constants from userland. */
82#define SIGRTMIN 32
83#define SIGRTMAX _NSIG
84
85/*
86 * SA_FLAGS values:
87 *
88 * SA_ONSTACK indicates that a registered stack_t will be used.
89 * SA_RESTART flag to get restarting signals (which were the default long ago)
90 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
91 * SA_RESETHAND clears the handler when the signal is delivered.
92 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
93 * SA_NODEFER prevents the current signal from being masked in the handler.
94 *
95 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
96 * Unix names RESETHAND and NODEFER respectively.
97 */
98#define SA_NOCLDSTOP 0x00000001u
99#define SA_NOCLDWAIT 0x00000002u
100#define SA_SIGINFO 0x00000004u
101#define SA_ONSTACK 0x08000000u
102#define SA_RESTART 0x10000000u
103#define SA_NODEFER 0x40000000u
104#define SA_RESETHAND 0x80000000u
105
106#define SA_NOMASK SA_NODEFER
107#define SA_ONESHOT SA_RESETHAND
108
109#define SA_RESTORER 0x04000000
110
111/*
112 * sigaltstack controls
113 */
114#define SS_ONSTACK 1
115#define SS_DISABLE 2
116
117#define MINSIGSTKSZ 2048
118#define SIGSTKSZ 8192
119
120#include <asm-generic/signal.h>
121
122#ifndef __ASSEMBLY__
123
124#ifdef __i386__
125# ifdef __KERNEL__
126struct old_sigaction {
127 __sighandler_t sa_handler;
128 old_sigset_t sa_mask;
129 unsigned long sa_flags;
130 __sigrestore_t sa_restorer;
131};
132
133struct sigaction {
134 __sighandler_t sa_handler;
135 unsigned long sa_flags;
136 __sigrestore_t sa_restorer;
137 sigset_t sa_mask; /* mask last for extensibility */
138};
139
140struct k_sigaction {
141 struct sigaction sa;
142};
143# else /* __KERNEL__ */
144/* Here we must cater to libcs that poke about in kernel headers. */
145
146struct sigaction {
147 union {
148 __sighandler_t _sa_handler;
149 void (*_sa_sigaction)(int, struct siginfo *, void *);
150 } _u;
151 sigset_t sa_mask;
152 unsigned long sa_flags;
153 void (*sa_restorer)(void);
154};
155
156#define sa_handler _u._sa_handler
157#define sa_sigaction _u._sa_sigaction
158
159# endif /* ! __KERNEL__ */
160#else /* __i386__ */
161
162struct sigaction {
163 __sighandler_t sa_handler;
164 unsigned long sa_flags;
165 __sigrestore_t sa_restorer;
166 sigset_t sa_mask; /* mask last for extensibility */
167};
168
169struct k_sigaction {
170 struct sigaction sa;
171};
172
173#endif /* !__i386__ */
174
175typedef struct sigaltstack {
176 void __user *ss_sp;
177 int ss_flags;
178 size_t ss_size;
179} stack_t;
180
181#ifdef __KERNEL__
182#include <asm/sigcontext.h>
183
184#ifdef __386__
185
186#define __HAVE_ARCH_SIG_BITOPS
187
Joe Perches9551b122008-03-23 01:03:28 -0700188#define sigaddset(set,sig) \
189 (__builtin_constantp(sig) \
190 ? __const_sigaddset((set), (sig)) \
191 : __gen_sigaddset((set), (sig)))
Thomas Gleixner33185c52007-10-23 22:37:24 +0200192
Joe Perches9551b122008-03-23 01:03:28 -0700193static inline void __gen_sigaddset(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200194{
Joe Perches9551b122008-03-23 01:03:28 -0700195 asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
Thomas Gleixner33185c52007-10-23 22:37:24 +0200196}
197
Joe Perches9551b122008-03-23 01:03:28 -0700198static inline void __const_sigaddset(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200199{
200 unsigned long sig = _sig - 1;
201 set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
202}
203
Joe Perches9551b122008-03-23 01:03:28 -0700204#define sigdelset(set, sig) \
205 (__builtin_constant_p(sig) \
206 ? __const_sigdelset((set), (sig)) \
207 : __gen_sigdelset((set), (sig)))
Thomas Gleixner33185c52007-10-23 22:37:24 +0200208
209
Joe Perches9551b122008-03-23 01:03:28 -0700210static inline void __gen_sigdelset(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200211{
Joe Perches9551b122008-03-23 01:03:28 -0700212 asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
Thomas Gleixner33185c52007-10-23 22:37:24 +0200213}
214
Joe Perches9551b122008-03-23 01:03:28 -0700215static inline void __const_sigdelset(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200216{
217 unsigned long sig = _sig - 1;
218 set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
219}
220
Joe Perches9551b122008-03-23 01:03:28 -0700221static inline int __const_sigismember(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200222{
223 unsigned long sig = _sig - 1;
224 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
225}
226
Joe Perches9551b122008-03-23 01:03:28 -0700227static inline int __gen_sigismember(sigset_t *set, int _sig)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200228{
229 int ret;
Joe Perches9551b122008-03-23 01:03:28 -0700230 asm("btl %2,%1\n\tsbbl %0,%0"
231 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
Thomas Gleixner33185c52007-10-23 22:37:24 +0200232 return ret;
233}
234
Joe Perches9551b122008-03-23 01:03:28 -0700235#define sigismember(set, sig) \
236 (__builtin_constant_p(sig) \
237 ? __const_sigismember((set), (sig)) \
238 : __gen_sigismember((set), (sig)))
Thomas Gleixner33185c52007-10-23 22:37:24 +0200239
Joe Perches9551b122008-03-23 01:03:28 -0700240static inline int sigfindinword(unsigned long word)
Thomas Gleixner33185c52007-10-23 22:37:24 +0200241{
Joe Perches9551b122008-03-23 01:03:28 -0700242 asm("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc");
Thomas Gleixner33185c52007-10-23 22:37:24 +0200243 return word;
244}
245
246struct pt_regs;
247
Thomas Gleixner33185c52007-10-23 22:37:24 +0200248#else /* __i386__ */
249
250#undef __HAVE_ARCH_SIG_BITOPS
251
Roland McGrathe1f28772008-01-30 13:30:50 +0100252#endif /* !__i386__ */
253
Thomas Gleixner33185c52007-10-23 22:37:24 +0200254#define ptrace_signal_deliver(regs, cookie) do { } while (0)
255
Thomas Gleixner33185c52007-10-23 22:37:24 +0200256#endif /* __KERNEL__ */
257#endif /* __ASSEMBLY__ */
258
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200259#endif