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Diffstat (limited to '')
| -rwxr-xr-x | bin/1sh/mkbuiltins | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/bin/1sh/mkbuiltins b/bin/1sh/mkbuiltins new file mode 100755 index 00000000..cbcf0ec1 --- /dev/null +++ b/bin/1sh/mkbuiltins @@ -0,0 +1,137 @@ +#!/bin/sh - + +#- +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)mkbuiltins 8.2 (Berkeley) 5/4/95 +# $FreeBSD: releng/12.1/bin/sh/mkbuiltins 328934 2018-02-06 15:41:35Z arichardson $ + +temp=`mktemp` +havehist=1 +if [ "X$1" = "X-h" ]; then + havehist=0 + shift +fi +srcdir=$1 +havejobs=0 +if grep '^#define[ ]*JOBS[ ]*1' $srcdir/shell.h > /dev/null +then havejobs=1 +fi +exec > builtins.c +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +#include <stdlib.h> +#include "shell.h" +#include "builtins.h" + +! +awk '/^[^#]/ {if(('$havejobs' || $2 != "-j") && ('$havehist' || $2 != "-h")) \ + print $0}' $srcdir/builtins.def | sed 's/-[hj]//' > $temp +echo 'int (*const builtinfunc[])(int, char **) = {' +awk '/^[^#]/ { printf "\t%s,\n", $1}' $temp +echo '}; + +const unsigned char builtincmd[] = {' +awk '{ for (i = 2 ; i <= NF ; i++) { + if ($i == "-s") { + spc = 1; + } else if ($i == "-n") { + # Handled later for builtins.h + continue + } else { + printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i + spc = 0; + } + }}' $temp +echo '};' + +exec > builtins.h +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +#include <sys/cdefs.h> +! +tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp | + awk '{ printf "#define %s %d\n", $1, NR-1}' +echo ' +#define BUILTIN_SPECIAL 0x80 + +extern int (*const builtinfunc[])(int, char **); +extern const unsigned char builtincmd[]; +' +awk '{ printf "int %s(int, char **);\n", $1}' $temp + +# Build safe_builtin_always() +cat <<EOF + +static inline int +safe_builtin_always(int idx) +{ +EOF +awk ' +BEGIN { printed = 0 } +{ + for (i = 2 ; i <= NF ; i++) { + if ($i == "-s") { + continue + } else if ($i == "-n") { + nofork = 1; + } else { + if (nofork == 0) { + continue + } + if (printed == 1) { + printf " || \n\t " + } else { + printf "\tif (" + } + printf "idx == " toupper($1) + printed = 1 + nofork = 0; + # Only need to check each once + break + } + } +}' $temp + +cat << EOF +) + return (1); + return(0); +} +EOF + +rm -f $temp |