/cp
[official-gcc.git] / libgo / mksigtab.sh
blobc68b28be3afe0a63d46fc1071510022338a98991
1 #!/bin/sh
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.
7 # Create sigtab.go from gen-sysinfo.go.
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.
14 # This script simply writes to standard output.
16 set -e
18 echo '// Generated by mksigtab.sh. Do not edit.'
19 echo
20 echo 'package runtime'
21 echo
22 echo 'var sigtable = [...]sigTabT{'
24 SIGLIST=""
26 # Handle signals valid on all Unix systems.
28 addsig() {
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 $signum = " gen-sysinfo.go | sed -e 's/.* = //'`
37 SIGLIST=$SIGLIST"_${signum}_"
40 echo ' 0: {0, "SIGNONE: no trap"},'
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"}'
70 # Handle signals that are not supported on all systems.
72 checksig() {
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 "$2"
79 checksig _SIGSTKFLT '{_SigThrow + _SigUnblock, "SIGSTKFLT: stack fault"}'
80 checksig _SIGIO '{_SigNotify, "SIGIO: i/o now possible"}'
81 checksig _SIGPWR '{_SigNotify, "SIGPWR: power failure restart"}'
82 checksig _SIGEMT '{_SigThrow, "SIGEMT: emulate instruction executed"}'
83 checksig _SIGINFO '{_SigNotify, "SIGINFO: status request from keyboard"}'
84 checksig _SIGTHR '{_SigNotify, "SIGTHR: reserved"}'
85 checksig _SIGPOLL '{_SigNotify, "SIGPOLL: pollable event occurred"}'
86 checksig _SIGWAITING '{_SigNotify, "SIGWAITING: reserved signal no longer used by"}'
87 checksig _SIGLWP '{_SigNotify, "SIGLWP: reserved signal no longer used by"}'
88 checksig _SIGFREEZE '{_SigNotify, "SIGFREEZE: special signal used by CPR"}'
89 checksig _SIGTHAW '{_SigNotify, "SIGTHAW: special signal used by CPR"}'
90 checksig _SIGCANCEL '{_SigSetStack + _SigUnblock, "SIGCANCEL: reserved signal for thread cancellation"}'
91 checksig _SIGXRES '{_SigNotify, "SIGXRES: resource control exceeded"}'
92 checksig _SIGJVM1 '{_SigNotify, "SIGJVM1: reserved signal for Java Virtual Machine"}'
93 checksig _SIGJVM2 '{_SigNotify, "SIGJVM2: reserved signal for Java Virtual Machine"}'
95 # Special handling of signals 32 and 33 on GNU/Linux systems,
96 # because they are special to glibc.
97 if test "${GOOS}" = "linux"; then
98 SIGLIST=$SIGLIST"_32__33_"
99 echo ' 32: {_SigSetStack + _SigUnblock, "signal 32"}, /* SIGCANCEL; see issue 6997 */'
100 echo ' 33: {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */'
103 if test "${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 $nsig + 1`
108 else
109 nsig=`grep 'const _*NSIG = [0-9]*$' 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 $rtmax + 1`
120 if test -z "$nsig"; then
121 echo 1>&2 "could not determine number of signals"
122 exit 1
126 # Fill in the remaining signal numbers in sigtable
127 while test "$i" -lt "$nsig"; do
128 if ! echo $SIGLIST | grep "_${i}_" >/dev/null 2>&1; then
129 echo " $i: {_SigNotify, \"signal $i\"},"
131 i=`expr "$i" + 1`
132 done
133 echo '}'