tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * include/asm-xtensa/signal.h
3 *
4 * Swiped from SH.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
11 */
12
13#ifndef _XTENSA_SIGNAL_H
14#define _XTENSA_SIGNAL_H
15
16
17#define _NSIG 64
18#define _NSIG_BPW 32
19#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
20
21#ifndef __ASSEMBLY__
22
23#include <linux/types.h>
24
25/* Avoid too many header ordering problems. */
26struct siginfo;
27typedef unsigned long old_sigset_t; /* at least 32 bits */
28typedef struct {
29 unsigned long sig[_NSIG_WORDS];
30} sigset_t;
31
32#endif
33
34#define SIGHUP 1
35#define SIGINT 2
36#define SIGQUIT 3
37#define SIGILL 4
38#define SIGTRAP 5
39#define SIGABRT 6
40#define SIGIOT 6
41#define SIGBUS 7
42#define SIGFPE 8
43#define SIGKILL 9
44#define SIGUSR1 10
45#define SIGSEGV 11
46#define SIGUSR2 12
47#define SIGPIPE 13
48#define SIGALRM 14
49#define SIGTERM 15
50#define SIGSTKFLT 16
51#define SIGCHLD 17
52#define SIGCONT 18
53#define SIGSTOP 19
54#define SIGTSTP 20
55#define SIGTTIN 21
56#define SIGTTOU 22
57#define SIGURG 23
58#define SIGXCPU 24
59#define SIGXFSZ 25
60#define SIGVTALRM 26
61#define SIGPROF 27
62#define SIGWINCH 28
63#define SIGIO 29
64#define SIGPOLL SIGIO
65/* #define SIGLOST 29 */
66#define SIGPWR 30
67#define SIGSYS 31
68#define SIGUNUSED 31
69
70/* These should not be considered constants from userland. */
71#define SIGRTMIN 32
72#define SIGRTMAX (_NSIG-1)
73
74/*
75 * SA_FLAGS values:
76 *
77 * SA_ONSTACK indicates that a registered stack_t will be used.
78 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
79 * SA_RESTART flag to get restarting signals (which were the default long ago)
80 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
81 * SA_RESETHAND clears the handler when the signal is delivered.
82 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
83 * SA_NODEFER prevents the current signal from being masked in the handler.
84 *
85 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
86 * Unix names RESETHAND and NODEFER respectively.
87 */
88#define SA_NOCLDSTOP 0x00000001
89#define SA_NOCLDWAIT 0x00000002 /* not supported yet */
90#define SA_SIGINFO 0x00000004
91#define SA_ONSTACK 0x08000000
92#define SA_RESTART 0x10000000
93#define SA_NODEFER 0x40000000
94#define SA_RESETHAND 0x80000000
95
96#define SA_NOMASK SA_NODEFER
97#define SA_ONESHOT SA_RESETHAND
98#define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
99
100#define SA_RESTORER 0x04000000
101
102/*
103 * sigaltstack controls
104 */
105#define SS_ONSTACK 1
106#define SS_DISABLE 2
107
108#define MINSIGSTKSZ 2048
109#define SIGSTKSZ 8192
110
111#ifndef __ASSEMBLY__
112#ifdef __KERNEL__
113
114/*
115 * These values of sa_flags are used only by the kernel as part of the
116 * irq handling routines.
117 *
118 * SA_INTERRUPT is also used by the irq handling routines.
119 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
120 */
121#define SA_PROBE SA_ONESHOT
122#define SA_SAMPLE_RANDOM SA_RESTART
123#define SA_SHIRQ 0x04000000
124#endif
125
126#define SIG_BLOCK 0 /* for blocking signals */
127#define SIG_UNBLOCK 1 /* for unblocking signals */
128#define SIG_SETMASK 2 /* for setting the signal mask */
129
130/* Type of a signal handler. */
131typedef void (*__sighandler_t)(int);
132
133#define SIG_DFL ((__sighandler_t)0) /* default signal handling */
134#define SIG_IGN ((__sighandler_t)1) /* ignore signal */
135#define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
136
137#ifdef __KERNEL__
138struct old_sigaction {
139 __sighandler_t sa_handler;
140 old_sigset_t sa_mask;
141 unsigned long sa_flags;
142 void (*sa_restorer)(void);
143};
144
145struct sigaction {
146 __sighandler_t sa_handler;
147 unsigned long sa_flags;
148 void (*sa_restorer)(void);
149 sigset_t sa_mask; /* mask last for extensibility */
150};
151
152struct k_sigaction {
153 struct sigaction sa;
154};
155
156#else
157
158/* Here we must cater to libcs that poke about in kernel headers. */
159
160struct sigaction {
161 union {
162 __sighandler_t _sa_handler;
163 void (*_sa_sigaction)(int, struct siginfo *, void *);
164 } _u;
165 sigset_t sa_mask;
166 unsigned long sa_flags;
167 void (*sa_restorer)(void);
168};
169
170#define sa_handler _u._sa_handler
171#define sa_sigaction _u._sa_sigaction
172
173#endif /* __KERNEL__ */
174
175typedef struct sigaltstack {
176 void *ss_sp;
177 int ss_flags;
178 size_t ss_size;
179} stack_t;
180
181#ifdef __KERNEL__
182#include <asm/sigcontext.h>
183#define ptrace_signal_deliver(regs, cookie) do { } while (0)
184
185#endif /* __KERNEL__ */
186#endif /* __ASSEMBLY__ */
187#endif /* _XTENSA_SIGNAL_H */