LXR linux-old/include/asm-x86

   1#ifndef _ASMx86_64_SIGNAL_H
   2#define _ASMx86_64_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       64
  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-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        8192
 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.  */
 129typedef 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
 135struct sigaction {
 136        __sighandler_t sa_handler;
 137        unsigned long sa_flags;
 138        void (*sa_restorer)(void);
 139        sigset_t sa_mask;               /* mask last for extensibility */
 140};
 141
 142struct k_sigaction {
 143        struct sigaction sa;
 144};
 145
 146typedef struct sigaltstack {
 147        void *ss_sp;
 148        int ss_flags;
 149        size_t ss_size;
 150} stack_t;
 151
 152#ifdef __KERNEL__
 153#include <asm/sigcontext.h>
 154
 155#undef __HAVE_ARCH_SIG_BITOPS
 156#if 0
 157
 158extern __inline__ void sigaddset(sigset_t *set, int _sig)
 159{
 160        __asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
 161}
 162
 163extern __inline__ void sigdelset(sigset_t *set, int _sig)
 164{
 165        __asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
 166}
 167
 168extern __inline__ int __const_sigismember(sigset_t *set, int _sig)
 169{
 170        unsigned long sig = _sig - 1;
 171        return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1)));
 172}
 173
 174extern __inline__ int __gen_sigismember(sigset_t *set, int _sig)
 175{
 176        int ret;
 177        __asm__("btq %2,%1\n\tsbbq %0,%0"
 178                : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
 179        return ret;
 180}
 181
 182#define sigismember(set,sig)                    \
 183        (__builtin_constant_p(sig) ?            \
 184         __const_sigismember((set),(sig)) :     \
 185         __gen_sigismember((set),(sig)))
 186
 187#define sigmask(sig)    (1UL << ((sig) - 1))
 188
 189extern __inline__ int sigfindinword(unsigned long word)
 190{
 191        __asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc");
 192        return word;
 193}
 194#endif
 195#endif /* __KERNEL__ */
 196
 197#endif
 198