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1965aae3 PA |
1 | #ifndef _ASM_X86_SIGNAL_H |
2 | #define _ASM_X86_SIGNAL_H | |
33185c50 TG |
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. */ | |
10 | struct siginfo; | |
11 | ||
96a388de | 12 | #ifdef __KERNEL__ |
33185c50 TG |
13 | #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 | |
96a388de | 22 | #else |
33185c50 TG |
23 | # define _NSIG_BPW 64 |
24 | #endif | |
25 | ||
26 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW) | |
27 | ||
28 | typedef unsigned long old_sigset_t; /* at least 32 bits */ | |
29 | ||
30 | typedef 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 | |
38 | typedef 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__ | |
126 | struct 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 | ||
133 | struct 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 | ||
140 | struct k_sigaction { | |
141 | struct sigaction sa; | |
142 | }; | |
b994b6c0 JS |
143 | |
144 | extern void do_notify_resume(struct pt_regs *, void *, __u32); | |
145 | ||
33185c50 TG |
146 | # else /* __KERNEL__ */ |
147 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
148 | ||
149 | struct sigaction { | |
150 | union { | |
151 | __sighandler_t _sa_handler; | |
152 | void (*_sa_sigaction)(int, struct siginfo *, void *); | |
153 | } _u; | |
154 | sigset_t sa_mask; | |
155 | unsigned long sa_flags; | |
156 | void (*sa_restorer)(void); | |
157 | }; | |
158 | ||
159 | #define sa_handler _u._sa_handler | |
160 | #define sa_sigaction _u._sa_sigaction | |
161 | ||
162 | # endif /* ! __KERNEL__ */ | |
163 | #else /* __i386__ */ | |
164 | ||
165 | struct sigaction { | |
166 | __sighandler_t sa_handler; | |
167 | unsigned long sa_flags; | |
168 | __sigrestore_t sa_restorer; | |
169 | sigset_t sa_mask; /* mask last for extensibility */ | |
170 | }; | |
171 | ||
172 | struct k_sigaction { | |
173 | struct sigaction sa; | |
174 | }; | |
175 | ||
176 | #endif /* !__i386__ */ | |
177 | ||
178 | typedef struct sigaltstack { | |
179 | void __user *ss_sp; | |
180 | int ss_flags; | |
181 | size_t ss_size; | |
182 | } stack_t; | |
183 | ||
184 | #ifdef __KERNEL__ | |
185 | #include <asm/sigcontext.h> | |
186 | ||
723edb50 | 187 | #ifdef __i386__ |
33185c50 TG |
188 | |
189 | #define __HAVE_ARCH_SIG_BITOPS | |
190 | ||
9551b12a | 191 | #define sigaddset(set,sig) \ |
723edb50 | 192 | (__builtin_constant_p(sig) \ |
9551b12a JP |
193 | ? __const_sigaddset((set), (sig)) \ |
194 | : __gen_sigaddset((set), (sig))) | |
33185c50 | 195 | |
9551b12a | 196 | static inline void __gen_sigaddset(sigset_t *set, int _sig) |
33185c50 | 197 | { |
9551b12a | 198 | asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); |
33185c50 TG |
199 | } |
200 | ||
9551b12a | 201 | static inline void __const_sigaddset(sigset_t *set, int _sig) |
33185c50 TG |
202 | { |
203 | unsigned long sig = _sig - 1; | |
204 | set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW); | |
205 | } | |
206 | ||
9551b12a JP |
207 | #define sigdelset(set, sig) \ |
208 | (__builtin_constant_p(sig) \ | |
209 | ? __const_sigdelset((set), (sig)) \ | |
210 | : __gen_sigdelset((set), (sig))) | |
33185c50 TG |
211 | |
212 | ||
9551b12a | 213 | static inline void __gen_sigdelset(sigset_t *set, int _sig) |
33185c50 | 214 | { |
9551b12a | 215 | asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); |
33185c50 TG |
216 | } |
217 | ||
9551b12a | 218 | static inline void __const_sigdelset(sigset_t *set, int _sig) |
33185c50 TG |
219 | { |
220 | unsigned long sig = _sig - 1; | |
221 | set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW)); | |
222 | } | |
223 | ||
9551b12a | 224 | static inline int __const_sigismember(sigset_t *set, int _sig) |
33185c50 TG |
225 | { |
226 | unsigned long sig = _sig - 1; | |
227 | return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); | |
228 | } | |
229 | ||
9551b12a | 230 | static inline int __gen_sigismember(sigset_t *set, int _sig) |
33185c50 TG |
231 | { |
232 | int ret; | |
9551b12a JP |
233 | asm("btl %2,%1\n\tsbbl %0,%0" |
234 | : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); | |
33185c50 TG |
235 | return ret; |
236 | } | |
237 | ||
9551b12a JP |
238 | #define sigismember(set, sig) \ |
239 | (__builtin_constant_p(sig) \ | |
240 | ? __const_sigismember((set), (sig)) \ | |
241 | : __gen_sigismember((set), (sig))) | |
33185c50 | 242 | |
9551b12a | 243 | static inline int sigfindinword(unsigned long word) |
33185c50 | 244 | { |
9551b12a | 245 | asm("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc"); |
33185c50 TG |
246 | return word; |
247 | } | |
248 | ||
249 | struct pt_regs; | |
250 | ||
33185c50 TG |
251 | #else /* __i386__ */ |
252 | ||
253 | #undef __HAVE_ARCH_SIG_BITOPS | |
254 | ||
e1f28773 RM |
255 | #endif /* !__i386__ */ |
256 | ||
33185c50 TG |
257 | #define ptrace_signal_deliver(regs, cookie) do { } while (0) |
258 | ||
33185c50 TG |
259 | #endif /* __KERNEL__ */ |
260 | #endif /* __ASSEMBLY__ */ | |
261 | ||
1965aae3 | 262 | #endif /* _ASM_X86_SIGNAL_H */ |