include/asm-x86_64/signal.h

   1 #ifndef _ASMx8664_SIGNAL_H
   2 #define _ASMx8664_SIGNAL_H
   3
   4 #ifndef __ASSEMBLY__
   5 #include <linux/types.h>
   6 #include <linux/time.h>
   7
   8 /* Avoid too many header ordering problems.  */
   9 struct siginfo;
  10
  11 #ifdef __KERNEL__
  12 #include <linux/linkage.h>
  13 /* Most things should be clean enough to redefine this at will, if care
  14    is taken to make libc match.  */
  15
  16 #define _NSIG           64
  17 #define _NSIG_BPW       64
  18 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  19
  20 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  21
  22 typedef struct {
  23         unsigned long sig[_NSIG_WORDS];
  24 } sigset_t;
  25
  26
  27 #else
  28 /* Here we must cater to libcs that poke about in kernel headers.  */
  29
  30 #define NSIG            32
  31 typedef unsigned long sigset_t;
  32
  33 #endif /* __KERNEL__ */
  34 #endif
  35
  36 #define SIGHUP           1
  37 #define SIGINT           2
  38 #define SIGQUIT          3
  39 #define SIGILL           4
  40 #define SIGTRAP          5
  41 #define SIGABRT          6
  42 #define SIGIOT           6
  43 #define SIGBUS           7
  44 #define SIGFPE           8
  45 #define SIGKILL          9
  46 #define SIGUSR1         10
  47 #define SIGSEGV         11
  48 #define SIGUSR2         12
  49 #define SIGPIPE         13
  50 #define SIGALRM         14
  51 #define SIGTERM         15
  52 #define SIGSTKFLT       16
  53 #define SIGCHLD         17
  54 #define SIGCONT         18
  55 #define SIGSTOP         19
  56 #define SIGTSTP         20
  57 #define SIGTTIN         21
  58 #define SIGTTOU         22
  59 #define SIGURG          23
  60 #define SIGXCPU         24
  61 #define SIGXFSZ         25
  62 #define SIGVTALRM       26
  63 #define SIGPROF         27
  64 #define SIGWINCH        28
  65 #define SIGIO           29
  66 #define SIGPOLL         SIGIO
  67 /*
  68 #define SIGLOST         29
  69 */
  70 #define SIGPWR          30
  71 #define SIGSYS          31
  72 #define SIGUNUSED       31
  73
  74 /* These should not be considered constants from userland.  */
  75 #define SIGRTMIN        32
  76 #define SIGRTMAX        _NSIG
  77
  78 /*
  79  * SA_FLAGS values:
  80  *
  81  * SA_ONSTACK indicates that a registered stack_t will be used.
  82  * SA_RESTART flag to get restarting signals (which were the default long ago)
  83  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  84  * SA_RESETHAND clears the handler when the signal is delivered.
  85  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  86  * SA_NODEFER prevents the current signal from being masked in the handler.
  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_ONSTACK      0x08000000
  95 #define SA_RESTART      0x10000000
  96 #define SA_NODEFER      0x40000000
  97 #define SA_RESETHAND    0x80000000
  98
  99 #define SA_NOMASK       SA_NODEFER
 100 #define SA_ONESHOT      SA_RESETHAND
 101
 102 #define SA_RESTORER     0x04000000
 103
 104 /*
 105  * sigaltstack controls
 106  */
 107 #define SS_ONSTACK      1
 108 #define SS_DISABLE      2
 109
 110 #define MINSIGSTKSZ     2048
 111 #define SIGSTKSZ        8192
 112
 113 #include <asm-generic/signal.h>
 114
 115 #ifndef __ASSEMBLY__
 116
 117 struct sigaction {
 118         __sighandler_t sa_handler;
 119         unsigned long sa_flags;
 120         __sigrestore_t sa_restorer;
 121         sigset_t sa_mask;               /* mask last for extensibility */
 122 };
 123
 124 struct k_sigaction {
 125         struct sigaction sa;
 126 };
 127
 128 typedef struct sigaltstack {
 129         void __user *ss_sp;
 130         int ss_flags;
 131         size_t ss_size;
 132 } stack_t;
 133
 134 #ifdef __KERNEL__
 135 #include <asm/sigcontext.h>
 136
 137 #undef __HAVE_ARCH_SIG_BITOPS
 138 #if 0
 139
 140 static inline void sigaddset(sigset_t *set, int _sig)
 141 {
 142         __asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
 143 }
 144
 145 static inline void sigdelset(sigset_t *set, int _sig)
 146 {
 147         __asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
 148 }
 149
 150 static inline int __const_sigismember(sigset_t *set, int _sig)
 151 {
 152         unsigned long sig = _sig - 1;
 153         return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1)));
 154 }
 155
 156 static inline int __gen_sigismember(sigset_t *set, int _sig)
 157 {
 158         int ret;
 159         __asm__("btq %2,%1\n\tsbbq %0,%0"
 160                 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
 161         return ret;
 162 }
 163
 164 #define sigismember(set,sig)                    \
 165         (__builtin_constant_p(sig) ?            \
 166          __const_sigismember((set),(sig)) :     \
 167          __gen_sigismember((set),(sig)))
 168
 169 static inline int sigfindinword(unsigned long word)
 170 {
 171         __asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc");
 172         return word;
 173 }
 174 #endif
 175 #endif
 176
 177 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 178
 179 #endif /* __KERNEL__ */
 180
 181 #endif