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1da177e4 LT |
1 | #ifndef _M68K_SIGNAL_H |
2 | #define _M68K_SIGNAL_H | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | /* Avoid too many header ordering problems. */ | |
7 | struct siginfo; | |
8 | ||
9 | #ifdef __KERNEL__ | |
10 | /* Most things should be clean enough to redefine this at will, if care | |
11 | is taken to make libc match. */ | |
12 | ||
13 | #define _NSIG 64 | |
14 | #define _NSIG_BPW 32 | |
15 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW) | |
16 | ||
17 | typedef unsigned long old_sigset_t; /* at least 32 bits */ | |
18 | ||
19 | typedef struct { | |
20 | unsigned long sig[_NSIG_WORDS]; | |
21 | } sigset_t; | |
22 | ||
23 | #else | |
24 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
25 | ||
26 | #define NSIG 32 | |
27 | typedef unsigned long sigset_t; | |
28 | ||
29 | #endif /* __KERNEL__ */ | |
30 | ||
31 | #define SIGHUP 1 | |
32 | #define SIGINT 2 | |
33 | #define SIGQUIT 3 | |
34 | #define SIGILL 4 | |
35 | #define SIGTRAP 5 | |
36 | #define SIGABRT 6 | |
37 | #define SIGIOT 6 | |
38 | #define SIGBUS 7 | |
39 | #define SIGFPE 8 | |
40 | #define SIGKILL 9 | |
41 | #define SIGUSR1 10 | |
42 | #define SIGSEGV 11 | |
43 | #define SIGUSR2 12 | |
44 | #define SIGPIPE 13 | |
45 | #define SIGALRM 14 | |
46 | #define SIGTERM 15 | |
47 | #define SIGSTKFLT 16 | |
48 | #define SIGCHLD 17 | |
49 | #define SIGCONT 18 | |
50 | #define SIGSTOP 19 | |
51 | #define SIGTSTP 20 | |
52 | #define SIGTTIN 21 | |
53 | #define SIGTTOU 22 | |
54 | #define SIGURG 23 | |
55 | #define SIGXCPU 24 | |
56 | #define SIGXFSZ 25 | |
57 | #define SIGVTALRM 26 | |
58 | #define SIGPROF 27 | |
59 | #define SIGWINCH 28 | |
60 | #define SIGIO 29 | |
61 | #define SIGPOLL SIGIO | |
62 | /* | |
63 | #define SIGLOST 29 | |
64 | */ | |
65 | #define SIGPWR 30 | |
66 | #define SIGSYS 31 | |
67 | #define SIGUNUSED 31 | |
68 | ||
69 | /* These should not be considered constants from userland. */ | |
70 | #define SIGRTMIN 32 | |
71 | #define SIGRTMAX _NSIG | |
72 | ||
73 | /* | |
74 | * SA_FLAGS values: | |
75 | * | |
76 | * SA_ONSTACK indicates that a registered stack_t will be used. | |
77 | * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the | |
78 | * SA_RESTART flag to get restarting signals (which were the default long ago) | |
79 | * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. | |
80 | * SA_RESETHAND clears the handler when the signal is delivered. | |
81 | * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. | |
82 | * SA_NODEFER prevents the current signal from being masked in the handler. | |
83 | * | |
84 | * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single | |
85 | * Unix names RESETHAND and NODEFER respectively. | |
86 | */ | |
87 | #define SA_NOCLDSTOP 0x00000001 | |
88 | #define SA_NOCLDWAIT 0x00000002 | |
89 | #define SA_SIGINFO 0x00000004 | |
90 | #define SA_ONSTACK 0x08000000 | |
91 | #define SA_RESTART 0x10000000 | |
92 | #define SA_NODEFER 0x40000000 | |
93 | #define SA_RESETHAND 0x80000000 | |
94 | ||
95 | #define SA_NOMASK SA_NODEFER | |
96 | #define SA_ONESHOT SA_RESETHAND | |
97 | #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ | |
98 | ||
99 | /* | |
100 | * sigaltstack controls | |
101 | */ | |
102 | #define SS_ONSTACK 1 | |
103 | #define SS_DISABLE 2 | |
104 | ||
105 | #define MINSIGSTKSZ 2048 | |
106 | #define SIGSTKSZ 8192 | |
107 | ||
b1ecb4c3 | 108 | #include <asm-generic/signal.h> |
1da177e4 LT |
109 | |
110 | #ifdef __KERNEL__ | |
111 | struct old_sigaction { | |
112 | __sighandler_t sa_handler; | |
113 | old_sigset_t sa_mask; | |
114 | unsigned long sa_flags; | |
b1ecb4c3 | 115 | __sigrestore_t sa_restorer; |
1da177e4 LT |
116 | }; |
117 | ||
118 | struct sigaction { | |
119 | __sighandler_t sa_handler; | |
120 | unsigned long sa_flags; | |
b1ecb4c3 | 121 | __sigrestore_t sa_restorer; |
1da177e4 LT |
122 | sigset_t sa_mask; /* mask last for extensibility */ |
123 | }; | |
124 | ||
125 | struct k_sigaction { | |
126 | struct sigaction sa; | |
127 | }; | |
128 | #else | |
129 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
130 | ||
131 | struct sigaction { | |
132 | union { | |
133 | __sighandler_t _sa_handler; | |
134 | void (*_sa_sigaction)(int, struct siginfo *, void *); | |
135 | } _u; | |
136 | sigset_t sa_mask; | |
137 | unsigned long sa_flags; | |
138 | void (*sa_restorer)(void); | |
139 | }; | |
140 | ||
141 | #define sa_handler _u._sa_handler | |
142 | #define sa_sigaction _u._sa_sigaction | |
143 | ||
144 | #endif /* __KERNEL__ */ | |
145 | ||
146 | typedef struct sigaltstack { | |
2382f77f | 147 | void __user *ss_sp; |
1da177e4 LT |
148 | int ss_flags; |
149 | size_t ss_size; | |
150 | } stack_t; | |
151 | ||
152 | #ifdef __KERNEL__ | |
153 | #include <asm/sigcontext.h> | |
154 | ||
155 | #define __HAVE_ARCH_SIG_BITOPS | |
156 | ||
157 | static inline void sigaddset(sigset_t *set, int _sig) | |
158 | { | |
159 | __asm__("bfset %0{%1,#1}" : "=m" (*set) : "id" ((_sig - 1) ^ 31) | |
160 | : "cc"); | |
161 | } | |
162 | ||
163 | static inline void sigdelset(sigset_t *set, int _sig) | |
164 | { | |
165 | __asm__("bfclr %0{%1,#1}" : "=m"(*set) : "id"((_sig - 1) ^ 31) | |
166 | : "cc"); | |
167 | } | |
168 | ||
169 | static inline int __const_sigismember(sigset_t *set, int _sig) | |
170 | { | |
171 | unsigned long sig = _sig - 1; | |
172 | return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); | |
173 | } | |
174 | ||
175 | static inline int __gen_sigismember(sigset_t *set, int _sig) | |
176 | { | |
177 | int ret; | |
178 | __asm__("bfextu %1{%2,#1},%0" | |
179 | : "=d"(ret) : "m"(*set), "id"((_sig-1) ^ 31)); | |
180 | return ret; | |
181 | } | |
182 | ||
183 | #define sigismember(set,sig) \ | |
184 | (__builtin_constant_p(sig) ? \ | |
185 | __const_sigismember(set,sig) : \ | |
186 | __gen_sigismember(set,sig)) | |
187 | ||
188 | static inline int sigfindinword(unsigned long word) | |
189 | { | |
190 | __asm__("bfffo %1{#0,#0},%0" : "=d"(word) : "d"(word & -word) : "cc"); | |
191 | return word ^ 31; | |
192 | } | |
193 | ||
194 | extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie); | |
195 | ||
196 | #endif /* __KERNEL__ */ | |
197 | ||
198 | #endif /* _M68K_SIGNAL_H */ |