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1 | #ifndef _ASMARM_SIGNAL_H |
2 | #define _ASMARM_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 | #define SIGSWI 32 | |
74 | ||
75 | /* | |
76 | * SA_FLAGS values: | |
77 | * | |
78 | * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. | |
79 | * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. | |
80 | * SA_SIGINFO deliver the signal with SIGINFO structs | |
81 | * SA_THIRTYTWO delivers the signal in 32-bit mode, even if the task | |
82 | * is running in 26-bit. | |
83 | * SA_ONSTACK allows alternate signal stacks (see sigaltstack(2)). | |
84 | * SA_RESTART flag to get restarting signals (which were the default long ago) | |
85 | * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the | |
86 | * SA_NODEFER prevents the current signal from being masked in the handler. | |
87 | * SA_RESETHAND clears the handler when the signal is delivered. | |
88 | * | |
89 | * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single | |
90 | * Unix names RESETHAND and NODEFER respectively. | |
91 | */ | |
92 | #define SA_NOCLDSTOP 0x00000001 | |
93 | #define SA_NOCLDWAIT 0x00000002 | |
94 | #define SA_SIGINFO 0x00000004 | |
95 | #define SA_THIRTYTWO 0x02000000 | |
96 | #define SA_RESTORER 0x04000000 | |
97 | #define SA_ONSTACK 0x08000000 | |
98 | #define SA_RESTART 0x10000000 | |
99 | #define SA_NODEFER 0x40000000 | |
100 | #define SA_RESETHAND 0x80000000 | |
101 | ||
102 | #define SA_NOMASK SA_NODEFER | |
103 | #define SA_ONESHOT SA_RESETHAND | |
104 | #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ | |
105 | ||
106 | ||
107 | /* | |
108 | * sigaltstack controls | |
109 | */ | |
110 | #define SS_ONSTACK 1 | |
111 | #define SS_DISABLE 2 | |
112 | ||
113 | #define MINSIGSTKSZ 2048 | |
114 | #define SIGSTKSZ 8192 | |
115 | ||
116 | #ifdef __KERNEL__ | |
117 | ||
118 | /* | |
119 | * These values of sa_flags are used only by the kernel as part of the | |
120 | * irq handling routines. | |
121 | * | |
122 | * SA_INTERRUPT is also used by the irq handling routines. | |
123 | * SA_SHIRQ is for shared interrupt support on PCI and EISA. | |
124 | */ | |
125 | #define SA_PROBE 0x80000000 | |
126 | #define SA_SAMPLE_RANDOM 0x10000000 | |
127 | #define SA_IRQNOMASK 0x08000000 | |
128 | #define SA_SHIRQ 0x04000000 | |
129 | #endif | |
130 | ||
131 | #define SIG_BLOCK 0 /* for blocking signals */ | |
132 | #define SIG_UNBLOCK 1 /* for unblocking signals */ | |
133 | #define SIG_SETMASK 2 /* for setting the signal mask */ | |
134 | ||
135 | /* Type of a signal handler. */ | |
136 | typedef void __signalfn_t(int); | |
137 | typedef __signalfn_t __user *__sighandler_t; | |
138 | ||
139 | typedef void __restorefn_t(void); | |
140 | typedef __restorefn_t __user *__sigrestore_t; | |
141 | ||
142 | #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ | |
143 | #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ | |
144 | #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ | |
145 | ||
146 | #ifdef __KERNEL__ | |
147 | struct old_sigaction { | |
148 | __sighandler_t sa_handler; | |
149 | old_sigset_t sa_mask; | |
150 | unsigned long sa_flags; | |
151 | __sigrestore_t sa_restorer; | |
152 | }; | |
153 | ||
154 | struct sigaction { | |
155 | __sighandler_t sa_handler; | |
156 | unsigned long sa_flags; | |
157 | __sigrestore_t sa_restorer; | |
158 | sigset_t sa_mask; /* mask last for extensibility */ | |
159 | }; | |
160 | ||
161 | struct k_sigaction { | |
162 | struct sigaction sa; | |
163 | }; | |
164 | ||
165 | #else | |
166 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
167 | ||
168 | struct sigaction { | |
169 | union { | |
170 | __sighandler_t _sa_handler; | |
171 | void (*_sa_sigaction)(int, struct siginfo *, void *); | |
172 | } _u; | |
173 | sigset_t sa_mask; | |
174 | unsigned long sa_flags; | |
175 | void (*sa_restorer)(void); | |
176 | }; | |
177 | ||
178 | #define sa_handler _u._sa_handler | |
179 | #define sa_sigaction _u._sa_sigaction | |
180 | ||
181 | #endif /* __KERNEL__ */ | |
182 | ||
183 | typedef struct sigaltstack { | |
184 | void __user *ss_sp; | |
185 | int ss_flags; | |
186 | size_t ss_size; | |
187 | } stack_t; | |
188 | ||
189 | #ifdef __KERNEL__ | |
190 | #include <asm/sigcontext.h> | |
191 | #define ptrace_signal_deliver(regs, cookie) do { } while (0) | |
192 | #endif | |
193 | ||
194 | #endif |