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_RESTART flag to get restarting signals (which were the default long ago)
78 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
79 * SA_RESETHAND clears the handler when the signal is delivered.
80 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
81 * SA_NODEFER prevents the current signal from being masked in the handler.
82 *
83 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
84 * Unix names RESETHAND and NODEFER respectively.
85 */
86 #define SA_NOCLDSTOP 0x00000001
87 #define SA_NOCLDWAIT 0x00000002
88 #define SA_SIGINFO 0x00000004
89 #define SA_ONSTACK 0x08000000
90 #define SA_RESTART 0x10000000
91 #define SA_NODEFER 0x40000000
92 #define SA_RESETHAND 0x80000000
93
94 #define SA_NOMASK SA_NODEFER
95 #define SA_ONESHOT SA_RESETHAND
96
97 /*
98 * sigaltstack controls
99 */
100 #define SS_ONSTACK 1
101 #define SS_DISABLE 2
102
103 #define MINSIGSTKSZ 2048
104 #define SIGSTKSZ 8192
105
106 #include <asm-generic/signal-defs.h>
107
108 #ifdef __KERNEL__
109 struct old_sigaction {
110 __sighandler_t sa_handler;
111 old_sigset_t sa_mask;
112 unsigned long sa_flags;
113 __sigrestore_t sa_restorer;
114 };
115
116 struct sigaction {
117 __sighandler_t sa_handler;
118 unsigned long sa_flags;
119 __sigrestore_t sa_restorer;
120 sigset_t sa_mask; /* mask last for extensibility */
121 };
122 #define __ARCH_HAS_SA_RESTORER
123
124 struct k_sigaction {
125 struct sigaction sa;
126 };
127 #else
128 /* Here we must cater to libcs that poke about in kernel headers. */
129
130 struct sigaction {
131 union {
132 __sighandler_t _sa_handler;
133 void (*_sa_sigaction)(int, struct siginfo *, void *);
134 } _u;
135 sigset_t sa_mask;
136 unsigned long sa_flags;
137 void (*sa_restorer)(void);
138 };
139
140 #define sa_handler _u._sa_handler
141 #define sa_sigaction _u._sa_sigaction
142
143 #endif /* __KERNEL__ */
144
145 typedef struct sigaltstack {
146 void __user *ss_sp;
147 int ss_flags;
148 size_t ss_size;
149 } stack_t;
150
151 #ifdef __KERNEL__
152 #include <asm/sigcontext.h>
153
154 #ifndef __uClinux__
155 #define __HAVE_ARCH_SIG_BITOPS
156
157 static inline void sigaddset(sigset_t *set, int _sig)
158 {
159 asm ("bfset %0{%1,#1}"
160 : "+od" (*set)
161 : "id" ((_sig - 1) ^ 31)
162 : "cc");
163 }
164
165 static inline void sigdelset(sigset_t *set, int _sig)
166 {
167 asm ("bfclr %0{%1,#1}"
168 : "+od" (*set)
169 : "id" ((_sig - 1) ^ 31)
170 : "cc");
171 }
172
173 static inline int __const_sigismember(sigset_t *set, int _sig)
174 {
175 unsigned long sig = _sig - 1;
176 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
177 }
178
179 static inline int __gen_sigismember(sigset_t *set, int _sig)
180 {
181 int ret;
182 asm ("bfextu %1{%2,#1},%0"
183 : "=d" (ret)
184 : "od" (*set), "id" ((_sig-1) ^ 31)
185 : "cc");
186 return ret;
187 }
188
189 #define sigismember(set,sig) \
190 (__builtin_constant_p(sig) ? \
191 __const_sigismember(set,sig) : \
192 __gen_sigismember(set,sig))
193
194 static inline int sigfindinword(unsigned long word)
195 {
196 asm ("bfffo %1{#0,#0},%0"
197 : "=d" (word)
198 : "d" (word & -word)
199 : "cc");
200 return word ^ 31;
201 }
202
203 struct pt_regs;
204 extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
205
206 #else
207
208 #undef __HAVE_ARCH_SIG_BITOPS
209 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
210
211 #endif /* __uClinux__ */
212 #endif /* __KERNEL__ */
213
214 #endif /* _M68K_SIGNAL_H */
215
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