--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgo/mksigtab.sh	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,133 @@
+#!/bin/sh
+
+# Copyright 2016 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Create sigtab.go from gen-sysinfo.go.
+
+# This shell scripts creates the sigtab.go file, which maps signals to
+# their dispositions.  We generate a file so that we can build a
+# composite literal that only refers to signals that are defined on
+# this system.
+
+# This script simply writes to standard output.
+
+set -e
+
+echo '// Generated by mksigtab.sh.  Do not edit.'
+echo
+echo 'package runtime'
+echo
+echo 'var sigtable = [...]sigTabT{'
+
+SIGLIST=""
+
+# Handle signals valid on all Unix systems.
+
+addsig() {
+    echo "	$1: $2,"
+    # Get the signal number and add it to SIGLIST
+    signum=`grep "const $1 = " gen-sysinfo.go | sed -e 's/.* = //'`
+    if echo "$signum" | grep -q '^_SIG[A-Z0-9_]*$'; then
+        # Recurse once to obtain signal number
+        # This is needed for some MIPS signals defined as aliases of other signals
+        signum=`grep "const $signum = " gen-sysinfo.go | sed -e 's/.* = //'`
+    fi
+    SIGLIST=$SIGLIST"_${signum}_"
+}
+
+echo '	0:          {0, "SIGNONE: no trap"},'
+addsig _SIGHUP     '{_SigNotify + _SigKill, "SIGHUP: terminal line hangup"}'
+addsig _SIGINT     '{_SigNotify + _SigKill, "SIGINT: interrupt"}'
+addsig _SIGQUIT    '{_SigNotify + _SigThrow, "SIGQUIT: quit"}'
+addsig _SIGILL     '{_SigThrow + _SigUnblock, "SIGILL: illegal instruction"}'
+addsig _SIGTRAP    '{_SigThrow + _SigUnblock, "SIGTRAP: trace trap"}'
+addsig _SIGABRT    '{_SigNotify + _SigThrow, "SIGABRT: abort"}'
+addsig _SIGBUS     '{_SigPanic + _SigUnblock, "SIGBUS: bus error"}'
+addsig _SIGFPE     '{_SigPanic + _SigUnblock, "SIGFPE: floating-point exception"}'
+addsig _SIGKILL    '{0, "SIGKILL: kill"}'
+addsig _SIGUSR1    '{_SigNotify, "SIGUSR1: user-defined signal 1"}'
+addsig _SIGSEGV    '{_SigPanic + _SigUnblock, "SIGSEGV: segmentation violation"}'
+addsig _SIGUSR2    '{_SigNotify, "SIGUSR2: user-defined signal 2"}'
+addsig _SIGPIPE    '{_SigNotify, "SIGPIPE: write to broken pipe"}'
+addsig _SIGALRM    '{_SigNotify, "SIGALRM: alarm clock"}'
+addsig _SIGTERM    '{_SigNotify + _SigKill, "SIGTERM: termination"}'
+addsig _SIGCHLD    '{_SigNotify + _SigUnblock, "SIGCHLD: child status has changed"}'
+addsig _SIGCONT    '{_SigNotify + _SigDefault, "SIGCONT: continue"}'
+addsig _SIGSTOP    '{0, "SIGSTOP: stop"}'
+addsig _SIGTSTP    '{_SigNotify + _SigDefault, "SIGTSTP: keyboard stop"}'
+addsig _SIGTTIN    '{_SigNotify + _SigDefault, "SIGTTIN: background read from tty"}'
+addsig _SIGTTOU    '{_SigNotify + _SigDefault, "SIGTTOU: background write to tty"}'
+addsig _SIGURG     '{_SigNotify, "SIGURG: urgent condition on socket"}'
+addsig _SIGXCPU    '{_SigNotify, "SIGXCPU: cpu limit exceeded"}'
+addsig _SIGXFSZ    '{_SigNotify, "SIGXFSZ: file size limit exceeded"}'
+addsig _SIGVTALRM  '{_SigNotify, "SIGVTALRM: virtual alarm clock"}'
+addsig _SIGPROF    '{_SigNotify + _SigUnblock, "SIGPROF: profiling alarm clock"}'
+addsig _SIGWINCH   '{_SigNotify, "SIGWINCH: window size change"}'
+addsig _SIGSYS     '{_SigThrow, "SIGSYS: bad system call"}'
+
+# Handle signals that are not supported on all systems.
+
+checksig() {
+    if grep "const $1 = " gen-sysinfo.go >/dev/null 2>&1 \
+	&& ! grep "const $1 = _SIG" gen-sysinfo.go > /dev/null 2>&1; then
+	addsig $1 "$2"
+    fi
+}
+
+checksig _SIGSTKFLT  '{_SigThrow + _SigUnblock, "SIGSTKFLT: stack fault"}'
+checksig _SIGIO      '{_SigNotify, "SIGIO: i/o now possible"}'
+checksig _SIGPWR     '{_SigNotify, "SIGPWR: power failure restart"}'
+checksig _SIGEMT     '{_SigThrow, "SIGEMT: emulate instruction executed"}'
+checksig _SIGINFO    '{_SigNotify, "SIGINFO: status request from keyboard"}'
+checksig _SIGTHR     '{_SigNotify, "SIGTHR: reserved"}'
+checksig _SIGPOLL    '{_SigNotify, "SIGPOLL: pollable event occurred"}'
+checksig _SIGWAITING '{_SigNotify, "SIGWAITING: reserved signal no longer used by"}'
+checksig _SIGLWP     '{_SigNotify, "SIGLWP: reserved signal no longer used by"}'
+checksig _SIGFREEZE  '{_SigNotify, "SIGFREEZE: special signal used by CPR"}'
+checksig _SIGTHAW    '{_SigNotify, "SIGTHAW: special signal used by CPR"}'
+checksig _SIGCANCEL  '{_SigSetStack + _SigUnblock, "SIGCANCEL: reserved signal for thread cancellation"}'
+checksig _SIGXRES    '{_SigNotify, "SIGXRES: resource control exceeded"}'
+checksig _SIGJVM1    '{_SigNotify, "SIGJVM1: reserved signal for Java Virtual Machine"}'
+checksig _SIGJVM2    '{_SigNotify, "SIGJVM2: reserved signal for Java Virtual Machine"}'
+
+# Special handling of signals 32 and 33 on GNU/Linux systems,
+# because they are special to glibc.
+if test "${GOOS}" = "linux"; then
+    SIGLIST=$SIGLIST"_32__33_"
+    echo '	32: {_SigSetStack + _SigUnblock, "signal 32"}, /* SIGCANCEL; see issue 6997 */'
+    echo '	33: {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */'
+fi
+
+if test "${GOOS}" = "aix"; then
+    # _NSIG = _NSIG32/_NSIG64 and _NSIG* = _SIGMAX* + 1
+    bits=`grep 'const _NSIG = _NSIG[0-9]*$' gen-sysinfo.go | sed -e 's/.* = _NSIG\([0-9]*\)/\1/'`
+    nsig=`grep "const _SIGMAX$bits = [0-9]*$" gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
+    nsig=`expr $nsig + 1`
+else
+    nsig=`grep 'const _*NSIG = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
+    if test -z "$nsig"; then
+	if grep 'const _*NSIG = [ (]*_*SIGRTMAX + 1[ )]*' gen-sysinfo.go >/dev/null 2>&1; then
+	    rtmax=`grep 'const _*SIGRTMAX = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
+	    if test -n "$rtmax"; then
+		nsig=`expr $rtmax + 1`
+	    fi
+	fi
+    fi
+fi
+
+if test -z "$nsig"; then
+    echo 1>&2 "could not determine number of signals"
+    exit 1
+fi
+
+i=1
+# Fill in the remaining signal numbers in sigtable
+while test "$i" -lt "$nsig"; do
+    if ! echo $SIGLIST | grep "_${i}_" >/dev/null 2>&1; then
+	echo "	$i: {_SigNotify, \"signal $i\"},"
+    fi
+    i=`expr "$i" + 1`
+done
+echo '}'