linux/arch/arm/include/asm/signal.h
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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.  */
   7struct 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
  17typedef unsigned long old_sigset_t;             /* at least 32 bits */
  18
  19typedef 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
  27typedef 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_NODEFER           prevents the current signal from being masked in the handler.
  86 * SA_RESETHAND         clears the handler when the signal is delivered.
  87 *
  88 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  89 * Unix names RESETHAND and NODEFER respectively.
  90 */
  91#define SA_NOCLDSTOP    0x00000001
  92#define SA_NOCLDWAIT    0x00000002
  93#define SA_SIGINFO      0x00000004
  94#define SA_THIRTYTWO    0x02000000
  95#define SA_RESTORER     0x04000000
  96#define SA_ONSTACK      0x08000000
  97#define SA_RESTART      0x10000000
  98#define SA_NODEFER      0x40000000
  99#define SA_RESETHAND    0x80000000
 100
 101#define SA_NOMASK       SA_NODEFER
 102#define SA_ONESHOT      SA_RESETHAND
 103
 104
 105/* 
 106 * sigaltstack controls
 107 */
 108#define SS_ONSTACK      1
 109#define SS_DISABLE      2
 110
 111#define MINSIGSTKSZ     2048
 112#define SIGSTKSZ        8192
 113
 114#include <asm-generic/signal.h>
 115
 116#ifdef __KERNEL__
 117struct old_sigaction {
 118        __sighandler_t sa_handler;
 119        old_sigset_t sa_mask;
 120        unsigned long sa_flags;
 121        __sigrestore_t sa_restorer;
 122};
 123
 124struct sigaction {
 125        __sighandler_t sa_handler;
 126        unsigned long sa_flags;
 127        __sigrestore_t sa_restorer;
 128        sigset_t sa_mask;               /* mask last for extensibility */
 129};
 130
 131struct k_sigaction {
 132        struct sigaction sa;
 133};
 134
 135#else
 136/* Here we must cater to libcs that poke about in kernel headers.  */
 137
 138struct sigaction {
 139        union {
 140          __sighandler_t _sa_handler;
 141          void (*_sa_sigaction)(int, struct siginfo *, void *);
 142        } _u;
 143        sigset_t sa_mask;
 144        unsigned long sa_flags;
 145        void (*sa_restorer)(void);
 146};
 147
 148#define sa_handler      _u._sa_handler
 149#define sa_sigaction    _u._sa_sigaction
 150
 151#endif /* __KERNEL__ */
 152
 153typedef struct sigaltstack {
 154        void __user *ss_sp;
 155        int ss_flags;
 156        size_t ss_size;
 157} stack_t;
 158
 159#ifdef __KERNEL__
 160#include <asm/sigcontext.h>
 161#define ptrace_signal_deliver(regs, cookie) do { } while (0)
 162#endif
 163
 164#endif
 165
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