libc/include/llvm-libc-macros/linux/signal-macros.h

   1 //===-- Definition of Linux signal number macros --------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef __LLVM_LIBC_MACROS_LINUX_SIGNUM_MACROS_H
  10 #define __LLVM_LIBC_MACROS_LINUX_SIGNUM_MACROS_H
  11
  12 #define SIGHUP 1
  13 #define SIGINT 2
  14 #define SIGQUIT 3
  15 #define SIGILL 4
  16 #define SIGTRAP 5
  17 #define SIGABRT 6
  18 #define SIGIOT 6
  19 #define SIGBUS 7
  20 #define SIGFPE 8
  21 #define SIGKILL 9
  22 #define SIGUSR1 10
  23 #define SIGSEGV 11
  24 #define SIGUSR2 12
  25 #define SIGPIPE 13
  26 #define SIGALRM 14
  27 #define SIGTERM 15
  28 #define SIGSTKFLT 16
  29 #define SIGCHLD 17
  30 #define SIGCONT 18
  31 #define SIGSTOP 19
  32 #define SIGTSTP 20
  33 #define SIGTTIN 21
  34 #define SIGTTOU 22
  35 #define SIGURG 23
  36 #define SIGXCPU 24
  37 #define SIGXFSZ 25
  38 #define SIGVTALRM 26
  39 #define SIGPROF 27
  40 #define SIGWINCH 28
  41 #define SIGIO 29
  42 #define SIGPOLL SIGIO
  43 #define SIGPWR 30
  44 #define SIGSYS 31
  45
  46 // Max signal number
  47 #define NSIG 64
  48
  49 // SIGRTMIN is current set to the minimum usable from user mode programs. If
  50 // the libc itself uses some of these signal numbers for private operations,
  51 // then it has to be adjusted in future to reflect that.
  52 #define SIGRTMIN 32
  53
  54 #define SIGRTMAX NSIG
  55
  56 // The kernel sigset is stored as an array of long values. Each bit of this
  57 // array corresponds to a signal, adjusted by 1. That is, bit 0 corresponds
  58 // to signal number 1, bit 1 corresponds to signal number 2 and so on. The
  59 // below macro denotes the size of that array (in number of long words and
  60 // not bytes).
  61 #define __NSIGSET_WORDS (NSIG / (sizeof(unsigned long) * 8))
  62
  63 #define SIG_BLOCK 0   // For blocking signals
  64 #define SIG_UNBLOCK 1 // For unblocking signals
  65 #define SIG_SETMASK 2 // For setting signal mask
  66
  67 // Flag values to be used for setting sigaction.sa_flags.
  68 #define SA_NOCLDSTOP 0x00000001
  69 #define SA_NOCLDWAIT 0x00000002
  70 #define SA_SIGINFO 0x00000004
  71 #define SA_RESTART 0x10000000
  72 #define SA_RESTORER 0x04000000
  73 #define SA_ONSTACK 0x08000000
  74
  75 // Signal stack flags
  76 #define SS_ONSTACK 0x1
  77 #define SS_DISABLE 0x2
  78
  79 #ifdef __x86_64__
  80 #define MINSIGSTKSZ 2048
  81 #define SIGSTKSZ 8192
  82 #elif defined(__aarch64__)
  83 #define MINSIGSTKSZ 5120
  84 #define SIGSTKSZ 16384
  85 #elif defined(__riscv)
  86 #define MINSIGSTKSZ 2048
  87 #define SIGSTKSZ 8192
  88 #else
  89 #error "Signal stack sizes not defined for your platform."
  90 #endif
  91
  92 #define SIG_DFL ((__sighandler_t)0)
  93 #define SIG_IGN ((__sighandler_t)1)
  94 #define SIG_ERR ((__sighandler_t)-1)
  95
  96 // SIGCHLD si_codes
  97 #define CLD_EXITED 1    // child has exited
  98 #define CLD_KILLED 2    // child was killed
  99 #define CLD_DUMPED 3    // child terminated abnormally
 100 #define CLD_TRAPPED 4   // traced child has trapped
 101 #define CLD_STOPPED 5   // child has stopped
 102 #define CLD_CONTINUED 6 // stopped child has continued
 103
 104 #endif // __LLVM_LIBC_MACROS_LINUX_SIGNUM_MACROS_H