[thirdparty/gcc.git] / libgo / mksigtab.sh

#!/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 '^_SIG[A-Z0-9_]*$' >/dev/null 2>&1; 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"}'
checksig _SIGLOST '   {_SigNotify, "SIGLOST: resource lost (Sun); server died (GNU)"}'

# 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 $rtmax + 1`
	    elif grep 'const _*SIGRTMAX = [ (]*_*SIGRTMIN[ )]*' gen-sysinfo.go >/dev/null 2>&1; then
		rtmin=`grep 'const _*SIGRTMIN = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
		if test -n "$rtmin"; then
		    nsig=`expr $rtmin + 1`
		fi
	    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 '}'
Commit	Line	Data
87211034	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
	16	set -e
	17
	18	echo '// Generated by mksigtab.sh. Do not edit.'
	19	echo
	20	echo 'package runtime'
	21	echo
	22	echo 'var sigtable = [...]sigTabT{'
	23
03118c21	24	SIGLIST=""
03118c21	25
87211034	26	# Handle signals valid on all Unix systems.
87211034	27
03118c21	28	addsig() {
	29	echo " $1: $2,"
	30	# Get the signal number and add it to SIGLIST
6d68866a	31	signum=`grep "const $1 = " gen-sysinfo.go \| sed -e 's/.* = //'`
bab15769	32	if echo "$signum" \| grep '^_SIG[A-Z0-9_]*$' >/dev/null 2>&1; then
6d68866a	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 $signum = " gen-sysinfo.go \| sed -e 's/.* = //'`
	36	fi
03118c21	37	SIGLIST=$SIGLIST"_${signum}_"
	38	}
	39
87211034	40	echo ' 0: {0, "SIGNONE: no trap"},'
03118c21	41	addsig _SIGHUP '{_SigNotify + _SigKill, "SIGHUP: terminal line hangup"}'
	42	addsig _SIGINT '{_SigNotify + _SigKill, "SIGINT: interrupt"}'
	43	addsig _SIGQUIT '{_SigNotify + _SigThrow, "SIGQUIT: quit"}'
	44	addsig _SIGILL '{_SigThrow + _SigUnblock, "SIGILL: illegal instruction"}'
	45	addsig _SIGTRAP '{_SigThrow + _SigUnblock, "SIGTRAP: trace trap"}'
	46	addsig _SIGABRT '{_SigNotify + _SigThrow, "SIGABRT: abort"}'
	47	addsig _SIGBUS '{_SigPanic + _SigUnblock, "SIGBUS: bus error"}'
	48	addsig _SIGFPE '{_SigPanic + _SigUnblock, "SIGFPE: floating-point exception"}'
	49	addsig _SIGKILL '{0, "SIGKILL: kill"}'
	50	addsig _SIGUSR1 '{_SigNotify, "SIGUSR1: user-defined signal 1"}'
	51	addsig _SIGSEGV '{_SigPanic + _SigUnblock, "SIGSEGV: segmentation violation"}'
	52	addsig _SIGUSR2 '{_SigNotify, "SIGUSR2: user-defined signal 2"}'
	53	addsig _SIGPIPE '{_SigNotify, "SIGPIPE: write to broken pipe"}'
	54	addsig _SIGALRM '{_SigNotify, "SIGALRM: alarm clock"}'
	55	addsig _SIGTERM '{_SigNotify + _SigKill, "SIGTERM: termination"}'
	56	addsig _SIGCHLD '{_SigNotify + _SigUnblock, "SIGCHLD: child status has changed"}'
	57	addsig _SIGCONT '{_SigNotify + _SigDefault, "SIGCONT: continue"}'
	58	addsig _SIGSTOP '{0, "SIGSTOP: stop"}'
	59	addsig _SIGTSTP '{_SigNotify + _SigDefault, "SIGTSTP: keyboard stop"}'
	60	addsig _SIGTTIN '{_SigNotify + _SigDefault, "SIGTTIN: background read from tty"}'
	61	addsig _SIGTTOU '{_SigNotify + _SigDefault, "SIGTTOU: background write to tty"}'
	62	addsig _SIGURG '{_SigNotify, "SIGURG: urgent condition on socket"}'
	63	addsig _SIGXCPU '{_SigNotify, "SIGXCPU: cpu limit exceeded"}'
	64	addsig _SIGXFSZ '{_SigNotify, "SIGXFSZ: file size limit exceeded"}'
	65	addsig _SIGVTALRM '{_SigNotify, "SIGVTALRM: virtual alarm clock"}'
	66	addsig _SIGPROF '{_SigNotify + _SigUnblock, "SIGPROF: profiling alarm clock"}'
	67	addsig _SIGWINCH '{_SigNotify, "SIGWINCH: window size change"}'
	68	addsig _SIGSYS '{_SigThrow, "SIGSYS: bad system call"}'
87211034	69
	70	# Handle signals that are not supported on all systems.
	71
	72	checksig() {
9ee6024b	73	if grep "const $1 = " gen-sysinfo.go >/dev/null 2>&1 \
9ee6024b	74	&& ! grep "const $1 = _SIG" gen-sysinfo.go > /dev/null 2>&1; then
03118c21	75	addsig $1 "$2"
87211034	76	fi
	77	}
	78
03118c21	79	checksig _SIGSTKFLT '{_SigThrow + _SigUnblock, "SIGSTKFLT: stack fault"}'
	80	checksig _SIGIO '{_SigNotify, "SIGIO: i/o now possible"}'
	81	checksig _SIGPWR '{_SigNotify, "SIGPWR: power failure restart"}'
	82	checksig _SIGEMT '{_SigThrow, "SIGEMT: emulate instruction executed"}'
	83	checksig _SIGINFO '{_SigNotify, "SIGINFO: status request from keyboard"}'
	84	checksig _SIGTHR '{_SigNotify, "SIGTHR: reserved"}'
	85	checksig _SIGPOLL '{_SigNotify, "SIGPOLL: pollable event occurred"}'
87211034	86	checksig _SIGWAITING '{_SigNotify, "SIGWAITING: reserved signal no longer used by"}'
03118c21	87	checksig _SIGLWP '{_SigNotify, "SIGLWP: reserved signal no longer used by"}'
	88	checksig _SIGFREEZE '{_SigNotify, "SIGFREEZE: special signal used by CPR"}'
	89	checksig _SIGTHAW '{_SigNotify, "SIGTHAW: special signal used by CPR"}'
	90	checksig _SIGCANCEL '{_SigSetStack + _SigUnblock, "SIGCANCEL: reserved signal for thread cancellation"}'
	91	checksig _SIGXRES '{_SigNotify, "SIGXRES: resource control exceeded"}'
	92	checksig _SIGJVM1 '{_SigNotify, "SIGJVM1: reserved signal for Java Virtual Machine"}'
	93	checksig _SIGJVM2 '{_SigNotify, "SIGJVM2: reserved signal for Java Virtual Machine"}'
c6ad139d	94	checksig _SIGLOST ' {_SigNotify, "SIGLOST: resource lost (Sun); server died (GNU)"}'
87211034	95
	96	# Special handling of signals 32 and 33 on GNU/Linux systems,
	97	# because they are special to glibc.
	98	if test "${GOOS}" = "linux"; then
03118c21	99	SIGLIST=$SIGLIST"_32__33_"
87211034	100	echo ' 32: {_SigSetStack + _SigUnblock, "signal 32"}, /* SIGCANCEL; see issue 6997 */'
	101	echo ' 33: {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */'
	102	fi
	103
03118c21	104	if test "${GOOS}" = "aix"; then
	105	# _NSIG = _NSIG32/_NSIG64 and _NSIG* = _SIGMAX* + 1
	106	bits=`grep 'const _NSIG = _NSIG[0-9]$' gen-sysinfo.go \| sed -e 's/. = _NSIG\([0-9]*\)/\1/'`
	107	nsig=`grep "const _SIGMAX$bits = [0-9]$" gen-sysinfo.go \| sed -e 's/. = \([0-9]*\)/\1/'`
	108	nsig=`expr $nsig + 1`
	109	else
	110	nsig=`grep 'const _NSIG = [0-9]$' gen-sysinfo.go \| sed -e 's/.* = \([0-9]*\)/\1/'`
a7cc3f54	111	if test -z "$nsig"; then
	112	if grep 'const _NSIG = [ (]_SIGRTMAX + 1[ )]' gen-sysinfo.go >/dev/null 2>&1; then
	113	rtmax=`grep 'const _SIGRTMAX = [0-9]$' gen-sysinfo.go \| sed -e 's/.* = \([0-9]*\)/\1/'`
	114	if test -n "$rtmax"; then
	115	nsig=`expr $rtmax + 1`
c6ad139d	116	elif grep 'const _SIGRTMAX = [ (]_SIGRTMIN[ )]' gen-sysinfo.go >/dev/null 2>&1; then
	117	rtmin=`grep 'const _SIGRTMIN = [0-9]$' gen-sysinfo.go \| sed -e 's/.* = \([0-9]*\)/\1/'`
	118	if test -n "$rtmin"; then
	119	nsig=`expr $rtmin + 1`
	120	fi
a7cc3f54	121	fi
	122	fi
	123	fi
	124	fi
	125
	126	if test -z "$nsig"; then
	127	echo 1>&2 "could not determine number of signals"
	128	exit 1
03118c21	129	fi
03118c21	130
87211034	131	i=1
03118c21	132	# Fill in the remaining signal numbers in sigtable
87211034	133	while test "$i" -lt "$nsig"; do
03118c21	134	if ! echo $SIGLIST \| grep "_${i}_" >/dev/null 2>&1; then
03118c21	135	echo " $i: {_SigNotify, \"signal $i\"},"
87211034	136	fi
	137	i=`expr "$i" + 1`
	138	done
87211034	139	echo '}'