summaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm/signal.h
blob: e49b828a2471d57cca8e5aa723acc3a011a9d390 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
#ifndef __SPARC_SIGNAL_H
#define __SPARC_SIGNAL_H

#include <asm/sigcontext.h>
#include <linux/compiler.h>

#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <linux/personality.h>
#include <linux/types.h>
#endif
#endif

/* On the Sparc the signal handlers get passed a 'sub-signal' code
 * for certain signal types, which we document here.
 */
#define SIGHUP		 1
#define SIGINT		 2
#define SIGQUIT		 3
#define SIGILL		 4
#define    SUBSIG_STACK       0
#define    SUBSIG_ILLINST     2
#define    SUBSIG_PRIVINST    3
#define    SUBSIG_BADTRAP(t)  (0x80 + (t))

#define SIGTRAP		 5
#define SIGABRT		 6
#define SIGIOT		 6

#define SIGEMT           7
#define    SUBSIG_TAG    10

#define SIGFPE		 8
#define    SUBSIG_FPDISABLED     0x400
#define    SUBSIG_FPERROR        0x404
#define    SUBSIG_FPINTOVFL      0x001
#define    SUBSIG_FPSTSIG        0x002
#define    SUBSIG_IDIVZERO       0x014
#define    SUBSIG_FPINEXACT      0x0c4
#define    SUBSIG_FPDIVZERO      0x0c8
#define    SUBSIG_FPUNFLOW       0x0cc
#define    SUBSIG_FPOPERROR      0x0d0
#define    SUBSIG_FPOVFLOW       0x0d4

#define SIGKILL		 9
#define SIGBUS          10
#define    SUBSIG_BUSTIMEOUT    1
#define    SUBSIG_ALIGNMENT     2
#define    SUBSIG_MISCERROR     5

#define SIGSEGV		11
#define    SUBSIG_NOMAPPING     3
#define    SUBSIG_PROTECTION    4
#define    SUBSIG_SEGERROR      5

#define SIGSYS		12

#define SIGPIPE		13
#define SIGALRM		14
#define SIGTERM		15
#define SIGURG          16

/* SunOS values which deviate from the Linux/i386 ones */
#define SIGSTOP		17
#define SIGTSTP		18
#define SIGCONT		19
#define SIGCHLD		20
#define SIGTTIN		21
#define SIGTTOU		22
#define SIGIO		23
#define SIGPOLL		SIGIO   /* SysV name for SIGIO */
#define SIGXCPU		24
#define SIGXFSZ		25
#define SIGVTALRM	26
#define SIGPROF		27
#define SIGWINCH	28
#define SIGLOST		29
#define SIGPWR		SIGLOST
#define SIGUSR1		30
#define SIGUSR2		31

/* Most things should be clean enough to redefine this at will, if care
   is taken to make libc match.  */

#define __OLD_NSIG	32
#define __NEW_NSIG      64
#ifdef __arch64__
#define _NSIG_BPW       64
#else
#define _NSIG_BPW       32
#endif
#define _NSIG_WORDS     (__NEW_NSIG / _NSIG_BPW)

#define SIGRTMIN       32
#define SIGRTMAX       __NEW_NSIG

#if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
#define _NSIG			__NEW_NSIG
#define __new_sigset_t		sigset_t
#define __new_sigaction		sigaction
#define __new_sigaction32	sigaction32
#define __old_sigset_t		old_sigset_t
#define __old_sigaction		old_sigaction
#define __old_sigaction32	old_sigaction32
#else
#define _NSIG			__OLD_NSIG
#define NSIG			_NSIG
#define __old_sigset_t		sigset_t
#define __old_sigaction		sigaction
#define __old_sigaction32	sigaction32
#endif

#ifndef __ASSEMBLY__

typedef unsigned long __old_sigset_t;            /* at least 32 bits */

typedef struct {
       unsigned long sig[_NSIG_WORDS];
} __new_sigset_t;

/* A SunOS sigstack */
struct sigstack {
	/* XXX 32-bit pointers pinhead XXX */
	char *the_stack;
	int   cur_status;
};

/* Sigvec flags */
#define _SV_SSTACK    1u    /* This signal handler should use sig-stack */
#define _SV_INTR      2u    /* Sig return should not restart system call */
#define _SV_RESET     4u    /* Set handler to SIG_DFL upon taken signal */
#define _SV_IGNCHILD  8u    /* Do not send SIGCHLD */

/*
 * sa_flags values: SA_STACK is not currently supported, but will allow the
 * usage of signal stacks by using the (now obsolete) sa_restorer field in
 * the sigaction structure as a stack pointer. This is now possible due to
 * the changes in signal handling. LBT 010493.
 * SA_RESTART flag to get restarting signals (which were the default long ago)
 */
#define SA_NOCLDSTOP	_SV_IGNCHILD
#define SA_STACK	_SV_SSTACK
#define SA_ONSTACK	_SV_SSTACK
#define SA_RESTART	_SV_INTR
#define SA_ONESHOT	_SV_RESET
#define SA_NOMASK	0x20u
#define SA_NOCLDWAIT    0x100u
#define SA_SIGINFO      0x200u


#define SIG_BLOCK          0x01	/* for blocking signals */
#define SIG_UNBLOCK        0x02	/* for unblocking signals */
#define SIG_SETMASK        0x04	/* for setting the signal mask */

/*
 * sigaltstack controls
 */
#define SS_ONSTACK	1
#define SS_DISABLE	2

#define MINSIGSTKSZ	4096
#define SIGSTKSZ	16384

#ifdef __KERNEL__
/*
 * DJHR
 * SA_STATIC_ALLOC is used for the sparc32 system to indicate that this
 * interrupt handler's irq structure should be statically allocated
 * by the request_irq routine.
 * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge
 * of interrupt usage and that sucks. Also without a flag like this
 * it may be possible for the free_irq routine to attempt to free
 * statically allocated data.. which is NOT GOOD.
 *
 */
#define SA_STATIC_ALLOC         0x8000
#endif

#include <asm-generic/signal-defs.h>

struct __new_sigaction {
	__sighandler_t		sa_handler;
	unsigned long		sa_flags;
	__sigrestore_t		sa_restorer;  /* not used by Linux/SPARC yet */
	__new_sigset_t		sa_mask;
};

struct __old_sigaction {
	__sighandler_t		sa_handler;
	__old_sigset_t		sa_mask;
	unsigned long		sa_flags;
	void			(*sa_restorer)(void);  /* not used by Linux/SPARC yet */
};

typedef struct sigaltstack {
	void			__user *ss_sp;
	int			ss_flags;
	size_t			ss_size;
} stack_t;

#ifdef __KERNEL__

struct k_sigaction {
	struct			__new_sigaction sa;
	void			__user *ka_restorer;
};

#define ptrace_signal_deliver(regs, cookie) do { } while (0)

#endif /* !(__KERNEL__) */

#endif /* !(__ASSEMBLY__) */

#endif /* !(__SPARC_SIGNAL_H) */