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1da177e4 LT |
1 | #ifndef _ASMi386_SIGNAL_H |
2 | #define _ASMi386_SIGNAL_H | |
3 | ||
4 | #include <linux/types.h> | |
1da177e4 LT |
5 | #include <linux/time.h> |
6 | #include <linux/compiler.h> | |
7 | ||
8 | /* Avoid too many header ordering problems. */ | |
9 | struct siginfo; | |
10 | ||
11 | #ifdef __KERNEL__ | |
b40c274a DW |
12 | |
13 | #include <linux/linkage.h> | |
14 | ||
1da177e4 LT |
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 | #define _NSIG_BPW 32 | |
20 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW) | |
21 | ||
22 | typedef unsigned long old_sigset_t; /* at least 32 bits */ | |
23 | ||
24 | typedef struct { | |
25 | unsigned long sig[_NSIG_WORDS]; | |
26 | } sigset_t; | |
27 | ||
28 | #else | |
29 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
30 | ||
31 | #define NSIG 32 | |
32 | typedef unsigned long sigset_t; | |
33 | ||
34 | #endif /* __KERNEL__ */ | |
35 | ||
36 | #define SIGHUP 1 | |
37 | #define SIGINT 2 | |
38 | #define SIGQUIT 3 | |
39 | #define SIGILL 4 | |
40 | #define SIGTRAP 5 | |
41 | #define SIGABRT 6 | |
42 | #define SIGIOT 6 | |
43 | #define SIGBUS 7 | |
44 | #define SIGFPE 8 | |
45 | #define SIGKILL 9 | |
46 | #define SIGUSR1 10 | |
47 | #define SIGSEGV 11 | |
48 | #define SIGUSR2 12 | |
49 | #define SIGPIPE 13 | |
50 | #define SIGALRM 14 | |
51 | #define SIGTERM 15 | |
52 | #define SIGSTKFLT 16 | |
53 | #define SIGCHLD 17 | |
54 | #define SIGCONT 18 | |
55 | #define SIGSTOP 19 | |
56 | #define SIGTSTP 20 | |
57 | #define SIGTTIN 21 | |
58 | #define SIGTTOU 22 | |
59 | #define SIGURG 23 | |
60 | #define SIGXCPU 24 | |
61 | #define SIGXFSZ 25 | |
62 | #define SIGVTALRM 26 | |
63 | #define SIGPROF 27 | |
64 | #define SIGWINCH 28 | |
65 | #define SIGIO 29 | |
66 | #define SIGPOLL SIGIO | |
67 | /* | |
68 | #define SIGLOST 29 | |
69 | */ | |
70 | #define SIGPWR 30 | |
71 | #define SIGSYS 31 | |
72 | #define SIGUNUSED 31 | |
73 | ||
74 | /* These should not be considered constants from userland. */ | |
75 | #define SIGRTMIN 32 | |
76 | #define SIGRTMAX _NSIG | |
77 | ||
78 | /* | |
79 | * SA_FLAGS values: | |
80 | * | |
81 | * SA_ONSTACK indicates that a registered stack_t will be used. | |
1da177e4 LT |
82 | * SA_RESTART flag to get restarting signals (which were the default long ago) |
83 | * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. | |
84 | * SA_RESETHAND clears the handler when the signal is delivered. | |
85 | * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. | |
86 | * SA_NODEFER prevents the current signal from being masked in the handler. | |
87 | * | |
88 | * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single | |
89 | * Unix names RESETHAND and NODEFER respectively. | |
90 | */ | |
91 | #define SA_NOCLDSTOP 0x00000001u | |
92 | #define SA_NOCLDWAIT 0x00000002u | |
93 | #define SA_SIGINFO 0x00000004u | |
94 | #define SA_ONSTACK 0x08000000u | |
95 | #define SA_RESTART 0x10000000u | |
96 | #define SA_NODEFER 0x40000000u | |
97 | #define SA_RESETHAND 0x80000000u | |
98 | ||
99 | #define SA_NOMASK SA_NODEFER | |
100 | #define SA_ONESHOT SA_RESETHAND | |
1da177e4 LT |
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 | ||
b1ecb4c3 | 113 | #include <asm-generic/signal.h> |
1da177e4 LT |
114 | |
115 | #ifdef __KERNEL__ | |
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; | |
121 | }; | |
122 | ||
123 | struct 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 | ||
130 | struct k_sigaction { | |
131 | struct sigaction sa; | |
132 | }; | |
133 | #else | |
134 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
135 | ||
136 | struct 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 | ||
151 | typedef 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 | ||
b7fd1edd CG |
162 | #define sigaddset(set,sig) \ |
163 | (__builtin_constant_p(sig) ? \ | |
164 | __const_sigaddset((set),(sig)) : \ | |
165 | __gen_sigaddset((set),(sig))) | |
166 | ||
167 | static __inline__ void __gen_sigaddset(sigset_t *set, int _sig) | |
1da177e4 | 168 | { |
b7fd1edd | 169 | __asm__("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); |
1da177e4 LT |
170 | } |
171 | ||
b7fd1edd | 172 | static __inline__ void __const_sigaddset(sigset_t *set, int _sig) |
1da177e4 | 173 | { |
b7fd1edd CG |
174 | unsigned long sig = _sig - 1; |
175 | set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW); | |
176 | } | |
177 | ||
178 | #define sigdelset(set,sig) \ | |
179 | (__builtin_constant_p(sig) ? \ | |
180 | __const_sigdelset((set),(sig)) : \ | |
181 | __gen_sigdelset((set),(sig))) | |
182 | ||
183 | ||
184 | static __inline__ void __gen_sigdelset(sigset_t *set, int _sig) | |
185 | { | |
186 | __asm__("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); | |
187 | } | |
188 | ||
cd02e27b | 189 | static __inline__ void __const_sigdelset(sigset_t *set, int _sig) |
b7fd1edd CG |
190 | { |
191 | unsigned long sig = _sig - 1; | |
192 | set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW)); | |
1da177e4 LT |
193 | } |
194 | ||
195 | static __inline__ int __const_sigismember(sigset_t *set, int _sig) | |
196 | { | |
197 | unsigned long sig = _sig - 1; | |
198 | return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); | |
199 | } | |
200 | ||
201 | static __inline__ int __gen_sigismember(sigset_t *set, int _sig) | |
202 | { | |
203 | int ret; | |
204 | __asm__("btl %2,%1\n\tsbbl %0,%0" | |
205 | : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); | |
206 | return ret; | |
207 | } | |
208 | ||
209 | #define sigismember(set,sig) \ | |
210 | (__builtin_constant_p(sig) ? \ | |
211 | __const_sigismember((set),(sig)) : \ | |
212 | __gen_sigismember((set),(sig))) | |
213 | ||
214 | static __inline__ int sigfindinword(unsigned long word) | |
215 | { | |
216 | __asm__("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc"); | |
217 | return word; | |
218 | } | |
219 | ||
220 | struct pt_regs; | |
1da177e4 LT |
221 | |
222 | #define ptrace_signal_deliver(regs, cookie) \ | |
223 | do { \ | |
224 | if (current->ptrace & PT_DTRACE) { \ | |
225 | current->ptrace &= ~PT_DTRACE; \ | |
226 | (regs)->eflags &= ~TF_MASK; \ | |
227 | } \ | |
228 | } while (0) | |
229 | ||
230 | #endif /* __KERNEL__ */ | |
231 | ||
232 | #endif |