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# $OpenBSD: genassym.sh,v 1.12 2014/07/05 07:18:33 jsg Exp $
# $NetBSD: genassym.sh,v 1.9 1998/04/25 19:48:27 matthias Exp $
#
# Copyright (c) 1997 Matthias Pfaller.
# All rights reserved.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
#
# If first argument is -c, create a temporary C file,
# compile it and execute the result.
awk=${AWK:-awk}
if [ "x$1" = "x-c" ] ; then
shift
ccode=1
else
ccode=0
fi
TMPC=`mktemp /tmp/genassym_c.XXXXXXXXXX` || exit 1
TMP=`mktemp /tmp/genassym.XXXXXXXXXX` || {
rm -f ${TMPC}
exit 1
}
trap "rm -f $TMPC $TMP" 0 1 2 3 15
$awk '
BEGIN {
printf("#ifndef _KERNEL\n#define _KERNEL\n#endif\n");
printf("#define offsetof(type, member) ((size_t)(&((type *)0)->member))\n");
defining = 0;
type = "long";
asmtype = "n";
asmprint = "";
}
$0 ~ /^[ \t]*#.*/ || $0 ~ /^[ \t]*$/ {
# Just ignore comments and empty lines
next;
}
$0 ~ /^config[ \t]/ {
type = $2;
asmtype = $3;
asmprint = $4;
next;
}
/^include[ \t]/ {
if (defining != 0) {
defining = 0;
printf("}\n");
}
if (includes[$2] == 0) {
printf("#%s\n", $0);
includes[$2] = 1;
}
next;
}
$0 ~ /^if[ \t]/ ||
$0 ~ /^ifdef[ \t]/ ||
$0 ~ /^ifndef[ \t]/ ||
$0 ~ /^else/ ||
$0 ~ /^elif[ \t]/ ||
$0 ~ /^endif/ {
printf("#%s\n", $0);
next;
}
/^union[ \t]/ {
structname = $2;
prefixname = toupper($3);
structtype = "union"
if (union[structname] == 1)
next;
else {
union[structname] = 1;
$0 = "define " toupper(structname) "_SIZEOF sizeof(union " structname ")";
}
# fall through
}
/^struct[ \t]/ {
structname = $2;
prefixname = toupper($3);
structtype = "struct"
if (struct[structname] == 1)
next;
else {
struct[structname] = 1;
$0 = "define " toupper(structname) "_SIZEOF sizeof(struct " structname ")";
}
# fall through
}
/^member[ \t]/ {
if (NF > 2)
$0 = "define " prefixname toupper($2) " offsetof(" structtype " " structname ", " $3 ")";
else
$0 = "define " prefixname toupper($2) " offsetof(" structtype " " structname ", " $2 ")";
# fall through
}
/^export[ \t]/ {
$0 = "define " $2 " " $2;
# fall through
}
/^define[ \t]/ {
if (defining == 0) {
defining = 1;
printf("void f" FNR "(void);\n");
printf("void f" FNR "() {\n");
if (ccode)
call[FNR] = "f" FNR;
defining = 1;
}
value = $0
gsub("^define[ \t]+[A-Za-z_][A-Za-z_0-9]*[ \t]+", "", value)
if (ccode)
printf("printf(\"#define " $2 " %%ld\\n\", (%s)" value ");\n", type);
else
printf("__asm(\"XYZZY %s %%%s0\" : : \"%s\" (%s));\n", $2, asmprint, asmtype, value);
next;
}
/^quote[ \t]/ {
gsub("^quote[ \t]+", "");
print;
next;
}
{
printf("syntax error in line %d\n", FNR) >"/dev/stderr";
exit(1);
}
END {
if (defining != 0) {
defining = 0;
printf("}\n");
}
if (ccode) {
printf("int main(int argc, char **argv) {");
for (i in call)
printf(call[i] "();");
printf("return(0); }\n");
}
}
' ccode=$ccode > $TMPC || exit 1
if [ $ccode = 1 ] ; then
"$@" -x c $TMPC -o $TMP && $TMP
else
# Kill all of the "#" and "$" modifiers; locore.s already
# prepends the correct "constant" modifier.
"$@" -x c -S ${TMPC} -o ${TMP} || exit 1
sed -e 's/#//g' -e 's/\$//g' ${TMP} | sed -n 's/.*XYZZY/#define/gp'
fi
|
