LXR linux/arch/xtensa/include/asm/signal.h

   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_RESTART flag to get restarting signals (which were the default long ago)
  79 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  80 * SA_RESETHAND clears the handler when the signal is delivered.
  81 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  82 * SA_NODEFER prevents the current signal from being masked in the handler.
  83 *
  84 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  85 * Unix names RESETHAND and NODEFER respectively.
  86 */
  87#define SA_NOCLDSTOP    0x00000001
  88#define SA_NOCLDWAIT    0x00000002 /* not supported yet */
  89#define SA_SIGINFO      0x00000004
  90#define SA_ONSTACK      0x08000000
  91#define SA_RESTART      0x10000000
  92#define SA_NODEFER      0x40000000
  93#define SA_RESETHAND    0x80000000
  94
  95#define SA_NOMASK       SA_NODEFER
  96#define SA_ONESHOT      SA_RESETHAND
  97
  98#define SA_RESTORER     0x04000000
  99
 100/*
 101 * sigaltstack controls
 102 */
 103#define SS_ONSTACK      1
 104#define SS_DISABLE      2
 105
 106#define MINSIGSTKSZ     2048
 107#define SIGSTKSZ        8192
 108
 109#ifndef __ASSEMBLY__
 110
 111#define SIG_BLOCK          0    /* for blocking signals */
 112#define SIG_UNBLOCK        1    /* for unblocking signals */
 113#define SIG_SETMASK        2    /* for setting the signal mask */
 114
 115/* Type of a signal handler.  */
 116typedef void (*__sighandler_t)(int);
 117
 118#define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 119#define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 120#define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 121
 122#ifdef __KERNEL__
 123struct old_sigaction {
 124        __sighandler_t sa_handler;
 125        old_sigset_t sa_mask;
 126        unsigned long sa_flags;
 127        void (*sa_restorer)(void);
 128};
 129
 130struct sigaction {
 131        __sighandler_t sa_handler;
 132        unsigned long sa_flags;
 133        void (*sa_restorer)(void);
 134        sigset_t sa_mask;               /* mask last for extensibility */
 135};
 136
 137struct k_sigaction {
 138        struct sigaction sa;
 139};
 140
 141#else
 142
 143/* Here we must cater to libcs that poke about in kernel headers.  */
 144
 145struct sigaction {
 146        union {
 147          __sighandler_t _sa_handler;
 148          void (*_sa_sigaction)(int, struct siginfo *, void *);
 149        } _u;
 150        sigset_t sa_mask;
 151        unsigned long sa_flags;
 152        void (*sa_restorer)(void);
 153};
 154
 155#define sa_handler      _u._sa_handler
 156#define sa_sigaction    _u._sa_sigaction
 157
 158#endif /* __KERNEL__ */
 159
 160typedef struct sigaltstack {
 161        void *ss_sp;
 162        int ss_flags;
 163        size_t ss_size;
 164} stack_t;
 165
 166#ifdef __KERNEL__
 167#include <asm/sigcontext.h>
 168#define ptrace_signal_deliver(regs, cookie) do { } while (0)
 169
 170#endif  /* __KERNEL__ */
 171#endif  /* __ASSEMBLY__ */
 172#endif  /* _XTENSA_SIGNAL_H */
 173