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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASMi386_SIGNAL_H
2#define _ASMi386_SIGNAL_H
3
4#include <linux/types.h>
5#include <linux/linkage.h>
6#include <linux/time.h>
7#include <linux/compiler.h>
8
9/* Avoid too many header ordering problems. */
10struct siginfo;
11
12#ifdef __KERNEL__
13/* Most things should be clean enough to redefine this at will, if care
14 is taken to make libc match. */
15
16#define _NSIG 64
17#define _NSIG_BPW 32
18#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
19
20typedef unsigned long old_sigset_t; /* at least 32 bits */
21
22typedef struct {
23 unsigned long sig[_NSIG_WORDS];
24} sigset_t;
25
26#else
27/* Here we must cater to libcs that poke about in kernel headers. */
28
29#define NSIG 32
30typedef unsigned long sigset_t;
31
32#endif /* __KERNEL__ */
33
34#define SIGHUP 1
35#define SIGINT 2
36#define SIGQUIT 3
37#define SIGILL 4
38#define SIGTRAP 5
39#define SIGABRT 6
40#define SIGIOT 6
41#define SIGBUS 7
42#define SIGFPE 8
43#define SIGKILL 9
44#define SIGUSR1 10
45#define SIGSEGV 11
46#define SIGUSR2 12
47#define SIGPIPE 13
48#define SIGALRM 14
49#define SIGTERM 15
50#define SIGSTKFLT 16
51#define SIGCHLD 17
52#define SIGCONT 18
53#define SIGSTOP 19
54#define SIGTSTP 20
55#define SIGTTIN 21
56#define SIGTTOU 22
57#define SIGURG 23
58#define SIGXCPU 24
59#define SIGXFSZ 25
60#define SIGVTALRM 26
61#define SIGPROF 27
62#define SIGWINCH 28
63#define SIGIO 29
64#define SIGPOLL SIGIO
65/*
66#define SIGLOST 29
67*/
68#define SIGPWR 30
69#define SIGSYS 31
70#define SIGUNUSED 31
71
72/* These should not be considered constants from userland. */
73#define SIGRTMIN 32
74#define SIGRTMAX _NSIG
75
76/*
77 * SA_FLAGS values:
78 *
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.
86 *
87 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
88 * Unix names RESETHAND and NODEFER respectively.
89 */
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
97
98#define SA_NOMASK SA_NODEFER
99#define SA_ONESHOT SA_RESETHAND
100#define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
101
102#define SA_RESTORER 0x04000000
103
104/*
105 * sigaltstack controls
106 */
107#define SS_ONSTACK 1
108#define SS_DISABLE 2
109
110#define MINSIGSTKSZ 2048
111#define SIGSTKSZ 8192
112
Al Virob1ecb4c2005-05-04 05:40:12 +0100113#include <asm-generic/signal.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115#ifdef __KERNEL__
116struct old_sigaction {
117 __sighandler_t sa_handler;
118 old_sigset_t sa_mask;
119 unsigned long sa_flags;
120 __sigrestore_t sa_restorer;
121};
122
123struct sigaction {
124 __sighandler_t sa_handler;
125 unsigned long sa_flags;
126 __sigrestore_t sa_restorer;
127 sigset_t sa_mask; /* mask last for extensibility */
128};
129
130struct k_sigaction {
131 struct sigaction sa;
132};
133#else
134/* Here we must cater to libcs that poke about in kernel headers. */
135
136struct sigaction {
137 union {
138 __sighandler_t _sa_handler;
139 void (*_sa_sigaction)(int, struct siginfo *, void *);
140 } _u;
141 sigset_t sa_mask;
142 unsigned long sa_flags;
143 void (*sa_restorer)(void);
144};
145
146#define sa_handler _u._sa_handler
147#define sa_sigaction _u._sa_sigaction
148
149#endif /* __KERNEL__ */
150
151typedef struct sigaltstack {
152 void __user *ss_sp;
153 int ss_flags;
154 size_t ss_size;
155} stack_t;
156
157#ifdef __KERNEL__
158#include <asm/sigcontext.h>
159
160#define __HAVE_ARCH_SIG_BITOPS
161
162static __inline__ void sigaddset(sigset_t *set, int _sig)
163{
164 __asm__("btsl %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
165}
166
167static __inline__ void sigdelset(sigset_t *set, int _sig)
168{
169 __asm__("btrl %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
170}
171
172static __inline__ int __const_sigismember(sigset_t *set, int _sig)
173{
174 unsigned long sig = _sig - 1;
175 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
176}
177
178static __inline__ int __gen_sigismember(sigset_t *set, int _sig)
179{
180 int ret;
181 __asm__("btl %2,%1\n\tsbbl %0,%0"
182 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
183 return ret;
184}
185
186#define sigismember(set,sig) \
187 (__builtin_constant_p(sig) ? \
188 __const_sigismember((set),(sig)) : \
189 __gen_sigismember((set),(sig)))
190
191static __inline__ int sigfindinword(unsigned long word)
192{
193 __asm__("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc");
194 return word;
195}
196
197struct pt_regs;
198extern int FASTCALL(do_signal(struct pt_regs *regs, sigset_t *oldset));
199
200#define ptrace_signal_deliver(regs, cookie) \
201 do { \
202 if (current->ptrace & PT_DTRACE) { \
203 current->ptrace &= ~PT_DTRACE; \
204 (regs)->eflags &= ~TF_MASK; \
205 } \
206 } while (0)
207
208#endif /* __KERNEL__ */
209
210#endif