include/asm-sh64/signal.h

   1 #ifndef __ASM_SH64_SIGNAL_H
   2 #define __ASM_SH64_SIGNAL_H
   3
   4 /*
   5  * This file is subject to the terms and conditions of the GNU General Public
   6  * License.  See the file "COPYING" in the main directory of this archive
   7  * for more details.
   8  *
   9  * include/asm-sh64/signal.h
  10  *
  11  * Copyright (C) 2000, 2001  Paolo Alberelli
  12  *
  13  */
  14
  15 #include <linux/types.h>
  16 #include <asm/processor.h>
  17
  18 /* Avoid too many header ordering problems.  */
  19 struct siginfo;
  20
  21 #define _NSIG           64
  22 #define _NSIG_BPW       32
  23 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  24
  25 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  26
  27 typedef struct {
  28         unsigned long sig[_NSIG_WORDS];
  29 } sigset_t;
  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-1)
  72
  73 /*
  74  * SA_FLAGS values:
  75  *
  76  * SA_ONSTACK indicates that a registered stack_t will be used.
  77  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  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 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
  98
  99 #define SA_RESTORER     0x04000000
 100
 101 /*
 102  * sigaltstack controls
 103  */
 104 #define SS_ONSTACK      1
 105 #define SS_DISABLE      2
 106
 107 #define MINSIGSTKSZ     2048
 108 #define SIGSTKSZ        THREAD_SIZE
 109
 110 #ifdef __KERNEL__
 111
 112 /*
 113  * These values of sa_flags are used only by the kernel as part of the
 114  * irq handling routines.
 115  *
 116  * SA_INTERRUPT is also used by the irq handling routines.
 117  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 118  */
 119 #define SA_PROBE                SA_ONESHOT
 120 #define SA_SAMPLE_RANDOM        SA_RESTART
 121 #define SA_SHIRQ                0x04000000
 122 #endif
 123
 124 #define SIG_BLOCK          0    /* for blocking signals */
 125 #define SIG_UNBLOCK        1    /* for unblocking signals */
 126 #define SIG_SETMASK        2    /* for setting the signal mask */
 127
 128 /* Type of a signal handler.  */
 129 typedef void (*__sighandler_t)(int);
 130
 131 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 132 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 133 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 134
 135 #ifdef __KERNEL__
 136 struct old_sigaction {
 137         __sighandler_t sa_handler;
 138         old_sigset_t sa_mask;
 139         unsigned long sa_flags;
 140         void (*sa_restorer)(void);
 141 };
 142
 143 struct sigaction {
 144         __sighandler_t sa_handler;
 145         unsigned long sa_flags;
 146         void (*sa_restorer)(void);
 147         sigset_t sa_mask;               /* mask last for extensibility */
 148 };
 149
 150 struct k_sigaction {
 151         struct sigaction sa;
 152 };
 153 #else
 154 /* Here we must cater to libcs that poke about in kernel headers.  */
 155
 156 struct sigaction {
 157         union {
 158           __sighandler_t _sa_handler;
 159           void (*_sa_sigaction)(int, struct siginfo *, void *);
 160         } _u;
 161         sigset_t sa_mask;
 162         unsigned long sa_flags;
 163         void (*sa_restorer)(void);
 164 };
 165
 166 #define sa_handler      _u._sa_handler
 167 #define sa_sigaction    _u._sa_sigaction
 168
 169 #endif /* __KERNEL__ */
 170
 171 typedef struct sigaltstack {
 172         void *ss_sp;
 173         int ss_flags;
 174         size_t ss_size;
 175 } stack_t;
 176
 177 #ifdef __KERNEL__
 178 #include <asm/sigcontext.h>
 179
 180 #define sigmask(sig)    (1UL << ((sig) - 1))
 181 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 182
 183 #endif /* __KERNEL__ */
 184
 185 #endif /* __ASM_SH64_SIGNAL_H */