File: /usr/src/linux/include/asm-sparc/signal.h
1 /* $Id: signal.h,v 1.35 1999/09/06 08:22:04 jj Exp $ */
2 #ifndef _ASMSPARC_SIGNAL_H
3 #define _ASMSPARC_SIGNAL_H
4
5 #include <asm/sigcontext.h>
6
7 #ifdef __KERNEL__
8 #ifndef __ASSEMBLY__
9 #include <linux/personality.h>
10 #include <linux/types.h>
11 #endif
12 #endif
13
14 /* On the Sparc the signal handlers get passed a 'sub-signal' code
15 * for certain signal types, which we document here.
16 */
17 #define SIGHUP 1
18 #define SIGINT 2
19 #define SIGQUIT 3
20 #define SIGILL 4
21 #define SUBSIG_STACK 0
22 #define SUBSIG_ILLINST 2
23 #define SUBSIG_PRIVINST 3
24 #define SUBSIG_BADTRAP(t) (0x80 + (t))
25
26 #define SIGTRAP 5
27 #define SIGABRT 6
28 #define SIGIOT 6
29
30 #define SIGEMT 7
31 #define SUBSIG_TAG 10
32
33 #define SIGFPE 8
34 #define SUBSIG_FPDISABLED 0x400
35 #define SUBSIG_FPERROR 0x404
36 #define SUBSIG_FPINTOVFL 0x001
37 #define SUBSIG_FPSTSIG 0x002
38 #define SUBSIG_IDIVZERO 0x014
39 #define SUBSIG_FPINEXACT 0x0c4
40 #define SUBSIG_FPDIVZERO 0x0c8
41 #define SUBSIG_FPUNFLOW 0x0cc
42 #define SUBSIG_FPOPERROR 0x0d0
43 #define SUBSIG_FPOVFLOW 0x0d4
44
45 #define SIGKILL 9
46 #define SIGBUS 10
47 #define SUBSIG_BUSTIMEOUT 1
48 #define SUBSIG_ALIGNMENT 2
49 #define SUBSIG_MISCERROR 5
50
51 #define SIGSEGV 11
52 #define SUBSIG_NOMAPPING 3
53 #define SUBSIG_PROTECTION 4
54 #define SUBSIG_SEGERROR 5
55
56 #define SIGSYS 12
57
58 #define SIGPIPE 13
59 #define SIGALRM 14
60 #define SIGTERM 15
61 #define SIGURG 16
62
63 /* SunOS values which deviate from the Linux/i386 ones */
64 #define SIGSTOP 17
65 #define SIGTSTP 18
66 #define SIGCONT 19
67 #define SIGCHLD 20
68 #define SIGTTIN 21
69 #define SIGTTOU 22
70 #define SIGIO 23
71 #define SIGPOLL SIGIO /* SysV name for SIGIO */
72 #define SIGXCPU 24
73 #define SIGXFSZ 25
74 #define SIGVTALRM 26
75 #define SIGPROF 27
76 #define SIGWINCH 28
77 #define SIGLOST 29
78 #define SIGPWR SIGLOST
79 #define SIGUSR1 30
80 #define SIGUSR2 31
81
82 /* Most things should be clean enough to redefine this at will, if care
83 * is taken to make libc match.
84 */
85
86 #define __OLD_NSIG 32
87 #define __NEW_NSIG 64
88 #define _NSIG_BPW 32
89 #define _NSIG_WORDS (__NEW_NSIG / _NSIG_BPW)
90
91 #define SIGRTMIN 32
92 #define SIGRTMAX (__NEW_NSIG - 1)
93
94 #if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
95 #define _NSIG __NEW_NSIG
96 #define __new_sigset_t sigset_t
97 #define __new_sigaction sigaction
98 #define __old_sigset_t old_sigset_t
99 #define __old_sigaction old_sigaction
100 #else
101 #define _NSIG __OLD_NSIG
102 #define __old_sigset_t sigset_t
103 #define __old_sigaction sigaction
104 #endif
105
106 #ifndef __ASSEMBLY__
107
108 typedef unsigned long __old_sigset_t;
109
110 typedef struct {
111 unsigned long sig[_NSIG_WORDS];
112 } __new_sigset_t;
113
114 /* A SunOS sigstack */
115 struct sigstack {
116 char *the_stack;
117 int cur_status;
118 };
119
120 /* Sigvec flags */
121 #define SV_SSTACK 1 /* This signal handler should use sig-stack */
122 #define SV_INTR 2 /* Sig return should not restart system call */
123 #define SV_RESET 4 /* Set handler to SIG_DFL upon taken signal */
124 #define SV_IGNCHILD 8 /* Do not send SIGCHLD */
125
126 /*
127 * sa_flags values: SA_STACK is not currently supported, but will allow the
128 * usage of signal stacks by using the (now obsolete) sa_restorer field in
129 * the sigaction structure as a stack pointer. This is now possible due to
130 * the changes in signal handling. LBT 010493.
131 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
132 * SA_RESTART flag to get restarting signals (which were the default long ago)
133 * SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
134 */
135 #define SA_NOCLDSTOP SV_IGNCHILD
136 #define SA_STACK SV_SSTACK
137 #define SA_ONSTACK SV_SSTACK
138 #define SA_RESTART SV_INTR
139 #define SA_ONESHOT SV_RESET
140 #define SA_INTERRUPT 0x10
141 #define SA_NOMASK 0x20
142 #define SA_SHIRQ 0x40
143 #define SA_NOCLDWAIT 0x100 /* not supported yet */
144 #define SA_SIGINFO 0x200
145
146 #define SIG_BLOCK 0x01 /* for blocking signals */
147 #define SIG_UNBLOCK 0x02 /* for unblocking signals */
148 #define SIG_SETMASK 0x04 /* for setting the signal mask */
149
150 /*
151 * sigaltstack controls
152 */
153 #define SS_ONSTACK 1
154 #define SS_DISABLE 2
155
156 #define MINSIGSTKSZ 4096
157 #define SIGSTKSZ 16384
158
159 #ifdef __KERNEL__
160 /*
161 * These values of sa_flags are used only by the kernel as part of the
162 * irq handling routines.
163 *
164 * SA_INTERRUPT is also used by the irq handling routines.
165 *
166 * DJHR
167 * SA_STATIC_ALLOC is used for the SPARC system to indicate that this
168 * interrupt handler's irq structure should be statically allocated
169 * by the request_irq routine.
170 * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge
171 * of interrupt usage and that sucks. Also without a flag like this
172 * it may be possible for the free_irq routine to attempt to free
173 * statically allocated data.. which is NOT GOOD.
174 *
175 */
176 #define SA_PROBE SA_ONESHOT
177 #define SA_SAMPLE_RANDOM SA_RESTART
178 #define SA_STATIC_ALLOC 0x80
179 #endif
180
181 /* Type of a signal handler. */
182 #ifdef __KERNEL__
183 typedef void (*__sighandler_t)(int, int, struct sigcontext *, char *);
184 #else
185 typedef void (*__sighandler_t)(int);
186 #endif
187
188 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
189 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
190 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
191
192 struct __new_sigaction {
193 __sighandler_t sa_handler;
194 unsigned long sa_flags;
195 void (*sa_restorer)(void); /* Not used by Linux/SPARC */
196 __new_sigset_t sa_mask;
197 };
198
199 #ifdef __KERNEL__
200 struct k_sigaction {
201 struct __new_sigaction sa;
202 void *ka_restorer;
203 };
204 #endif
205
206 struct __old_sigaction {
207 __sighandler_t sa_handler;
208 __old_sigset_t sa_mask;
209 unsigned long sa_flags;
210 void (*sa_restorer) (void); /* not used by Linux/SPARC */
211 };
212
213 typedef struct sigaltstack {
214 void *ss_sp;
215 int ss_flags;
216 size_t ss_size;
217 } stack_t;
218
219 #endif /* !(__ASSEMBLY__) */
220
221 #endif /* !(_ASMSPARC_SIGNAL_H) */
222