1#!/bin/sh 2 3# Copyright 2016 The Go Authors. All rights reserved. 4# Use of this source code is governed by a BSD-style 5# license that can be found in the LICENSE file. 6 7# Create sigtab.go from gen-sysinfo.go. 8 9# This shell scripts creates the sigtab.go file, which maps signals to 10# their dispositions. We generate a file so that we can build a 11# composite literal that only refers to signals that are defined on 12# this system. 13 14# This script simply writes to standard output. 15 16set -e 17 18echo '// Generated by mksigtab.sh. Do not edit.' 19echo 20echo 'package runtime' 21echo 22echo 'var sigtable = [...]sigTabT{' 23 24SIGLIST="" 25 26# Handle signals valid on all Unix systems. 27 28addsig() { 29 echo " $1: $2," 30 # Get the signal number and add it to SIGLIST 31 signum=`grep "const $1 = " gen-sysinfo.go | sed -e 's/.* = //'` 32 if echo "$signum" | grep '^_SIG[A-Z0-9_]*$' >/dev/null 2>&1; then 33 # Recurse once to obtain signal number 34 # This is needed for some MIPS signals defined as aliases of other signals 35 signum=`grep "const $signum = " gen-sysinfo.go | sed -e 's/.* = //'` 36 fi 37 SIGLIST=$SIGLIST"_${signum}_" 38} 39 40echo ' 0: {0, "SIGNONE: no trap"},' 41addsig _SIGHUP '{_SigNotify + _SigKill, "SIGHUP: terminal line hangup"}' 42addsig _SIGINT '{_SigNotify + _SigKill, "SIGINT: interrupt"}' 43addsig _SIGQUIT '{_SigNotify + _SigThrow, "SIGQUIT: quit"}' 44addsig _SIGILL '{_SigThrow + _SigUnblock, "SIGILL: illegal instruction"}' 45addsig _SIGTRAP '{_SigThrow + _SigUnblock, "SIGTRAP: trace trap"}' 46addsig _SIGABRT '{_SigNotify + _SigThrow, "SIGABRT: abort"}' 47addsig _SIGBUS '{_SigPanic + _SigUnblock, "SIGBUS: bus error"}' 48addsig _SIGFPE '{_SigPanic + _SigUnblock, "SIGFPE: floating-point exception"}' 49addsig _SIGKILL '{0, "SIGKILL: kill"}' 50addsig _SIGUSR1 '{_SigNotify, "SIGUSR1: user-defined signal 1"}' 51addsig _SIGSEGV '{_SigPanic + _SigUnblock, "SIGSEGV: segmentation violation"}' 52addsig _SIGUSR2 '{_SigNotify, "SIGUSR2: user-defined signal 2"}' 53addsig _SIGPIPE '{_SigNotify, "SIGPIPE: write to broken pipe"}' 54addsig _SIGALRM '{_SigNotify, "SIGALRM: alarm clock"}' 55addsig _SIGTERM '{_SigNotify + _SigKill, "SIGTERM: termination"}' 56addsig _SIGCHLD '{_SigNotify + _SigUnblock, "SIGCHLD: child status has changed"}' 57addsig _SIGCONT '{_SigNotify + _SigDefault, "SIGCONT: continue"}' 58addsig _SIGSTOP '{0, "SIGSTOP: stop"}' 59addsig _SIGTSTP '{_SigNotify + _SigDefault, "SIGTSTP: keyboard stop"}' 60addsig _SIGTTIN '{_SigNotify + _SigDefault, "SIGTTIN: background read from tty"}' 61addsig _SIGTTOU '{_SigNotify + _SigDefault, "SIGTTOU: background write to tty"}' 62addsig _SIGURG '{_SigNotify, "SIGURG: urgent condition on socket"}' 63addsig _SIGXCPU '{_SigNotify, "SIGXCPU: cpu limit exceeded"}' 64addsig _SIGXFSZ '{_SigNotify, "SIGXFSZ: file size limit exceeded"}' 65addsig _SIGVTALRM '{_SigNotify, "SIGVTALRM: virtual alarm clock"}' 66addsig _SIGPROF '{_SigNotify + _SigUnblock, "SIGPROF: profiling alarm clock"}' 67addsig _SIGWINCH '{_SigNotify, "SIGWINCH: window size change"}' 68addsig _SIGSYS '{_SigThrow, "SIGSYS: bad system call"}' 69 70# Handle signals that are not supported on all systems. 71 72checksig() { 73 if grep "const $1 = " gen-sysinfo.go >/dev/null 2>&1 \ 74 && ! grep "const $1 = _SIG" gen-sysinfo.go > /dev/null 2>&1; then 75 addsig $1 "$2" 76 fi 77} 78 79checksig _SIGSTKFLT '{_SigThrow + _SigUnblock, "SIGSTKFLT: stack fault"}' 80checksig _SIGIO '{_SigNotify, "SIGIO: i/o now possible"}' 81checksig _SIGPWR '{_SigNotify, "SIGPWR: power failure restart"}' 82checksig _SIGEMT '{_SigThrow, "SIGEMT: emulate instruction executed"}' 83checksig _SIGINFO '{_SigNotify, "SIGINFO: status request from keyboard"}' 84checksig _SIGTHR '{_SigNotify, "SIGTHR: reserved"}' 85checksig _SIGPOLL '{_SigNotify, "SIGPOLL: pollable event occurred"}' 86checksig _SIGWAITING '{_SigNotify, "SIGWAITING: reserved signal no longer used by"}' 87checksig _SIGLWP '{_SigNotify, "SIGLWP: reserved signal no longer used by"}' 88checksig _SIGFREEZE '{_SigNotify, "SIGFREEZE: special signal used by CPR"}' 89checksig _SIGTHAW '{_SigNotify, "SIGTHAW: special signal used by CPR"}' 90checksig _SIGCANCEL '{_SigSetStack + _SigUnblock, "SIGCANCEL: reserved signal for thread cancellation"}' 91checksig _SIGXRES '{_SigNotify, "SIGXRES: resource control exceeded"}' 92checksig _SIGJVM1 '{_SigNotify, "SIGJVM1: reserved signal for Java Virtual Machine"}' 93checksig _SIGJVM2 '{_SigNotify, "SIGJVM2: reserved signal for Java Virtual Machine"}' 94 95# Special handling of signals 32 and 33 on GNU/Linux systems, 96# because they are special to glibc. 97if test "${GOOS}" = "linux"; then 98 SIGLIST=$SIGLIST"_32__33_" 99 echo ' 32: {_SigSetStack + _SigUnblock, "signal 32"}, /* SIGCANCEL; see issue 6997 */' 100 echo ' 33: {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */' 101fi 102 103if test "${GOOS}" = "aix"; then 104 # _NSIG = _NSIG32/_NSIG64 and _NSIG* = _SIGMAX* + 1 105 bits=`grep 'const _NSIG = _NSIG[0-9]*$' gen-sysinfo.go | sed -e 's/.* = _NSIG\([0-9]*\)/\1/'` 106 nsig=`grep "const _SIGMAX$bits = [0-9]*$" gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'` 107 nsig=`expr $nsig + 1` 108else 109 nsig=`grep 'const _*NSIG = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'` 110 if test -z "$nsig"; then 111 if grep 'const _*NSIG = [ (]*_*SIGRTMAX + 1[ )]*' gen-sysinfo.go >/dev/null 2>&1; then 112 rtmax=`grep 'const _*SIGRTMAX = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'` 113 if test -n "$rtmax"; then 114 nsig=`expr $rtmax + 1` 115 fi 116 fi 117 fi 118fi 119 120if test -z "$nsig"; then 121 echo 1>&2 "could not determine number of signals" 122 exit 1 123fi 124 125i=1 126# Fill in the remaining signal numbers in sigtable 127while test "$i" -lt "$nsig"; do 128 if ! echo $SIGLIST | grep "_${i}_" >/dev/null 2>&1; then 129 echo " $i: {_SigNotify, \"signal $i\"}," 130 fi 131 i=`expr "$i" + 1` 132done 133echo '}' 134