#!/bin/sh -f
ex /tmp/$$.c <<END >/dev/null
a
main (){}
.
w
q
END
WD=`pwd`
cd /tmp
gcc -c $$.c
case "`file $$.o`" in
*ELF*) MYSYS=elf ;;
*COFF*|*BCS*) MYSYS=coff ;;
*mc68k*|*M68000*) MYSYS=mc68030 ;;
*SPARC*) MYSYS=sparc ;;
*386*) MYSYS=i386 ;;
esac
rm $$.c $$.o
cd $WD
WHOAMI=$0
if [ $FILENAME=$1
shift
fi
exec gawk -v whoami=$WHOAMI -vsys=$MYSYS -voptions="$*" '
BEGIN {
if (ARGC != 3) {
usage()
exit 1
}
c_filename = ""
asm_filename = ""
cmdline = ""
asm_code = ""
c_code = ""
c_lineno = 0
oldlineno = 0
newlineno = 0
ignore_stabd = 0
num_of_fields = 0
if (sys == "sparc" || sys == "i386") {
line_hint = "^[ \t]*\.stabn.*"
line_field = 3;
line_delimiter = ",";
line_offset = 0;
}
else if (sys == "mc68020" || sys == "mc68030" || sys == "i386-gnu-linux") {
line_hint = "^[ \t]*\.stabd.*"
line_field = 3;
line_delimiter = ",";
line_offset = 0;
}
else if (sys == "elf") {
line_hint = "section.*\.line"
line_field = 3;
line_delimiter = "\t";
line_offset = 0;
}
else if (sys == "coff") {
line_hint = "^[ \t]*ln"
line_field = 3;
line_delimiter = "\t";
}
else {
error("Processor type " sys " is not supported yet, sorry")
}
parse_cmdline()
printf("compiling %s to asm code\n", c_filename ) > "/dev/stderr"
if (system(cmdline) != 0 ) {
error("Compilation of " c_filename " failed")
}
printf("generating listing\n") > "/dev/stderr"
while ( getline asm_code < asm_filename > 0 ) {
if ( (ignore_stabd==0) && (asm_code ~ line_hint)) {
while ( sys == "elf" && (asm_code !~ "word" && asm_code !~ "byte") &&
getline asm_code < asm_filename > 0);
num_of_fields = split(asm_code, fields, line_delimiter)
newlineno = fields[line_field] + line_offset;
if (newlineno > oldlineno) {
while ( newlineno > c_lineno && getline c_code < c_filename > 0) {
c_lineno++
printf("%4d %s\n", c_lineno, c_code)
}
oldlineno = newlineno
}
}
else if ( asm_code ~ ".*Ltext[ \t]*$" ) {
if ( match(asm_code, c_filename)) {
ignore_stabd = 0
}
else {
ignore_stabd = 1
}
}
else if ( sys == "elf" && asm_code ~ "section.*\.debug" ) {
while ( asm_code !~ "^[ \t]*[.]*previous" &&
asm_code !~ "\.popsection" &&
getline asm_code < asm_filename > 0 );
if ( ! (getline asm_code < asm_filename > 0)) break;
}
else if ( sys == "coff" && asm_code ~ "^[ \t]*sdef" ) {
if ( asm_code ~ "\.bf" ) {
while ( asm_code !~ "^[ \t]*line" &&
getline asm_code < asm_filename > 0 ) {
num_of_fields = split(asm_code, fields, "\t")
line_offset = fields[line_field] - 1;
}
}
while ( asm_code !~ "^[ \t]*endef" &&
getline asm_code < asm_filename > 0 ) {
}
if ( ! (getline asm_code < asm_filename > 0)) break;
}
printf("\t\t\t%s\n", asm_code)
}
system("/bin/rm " asm_filename)
}
function usage() {
printf("usage: %s filename compiler-options\n", whoami) > "/dev/stderr"
}
function error(s) {
printf("error: %s\n", s) > "/dev/stderr"
exit 1
}
function parse_cmdline( i) {
asm_filename = "/tmp/lister" ARGV[1] ".s"
ARGV[1] = ""
c_filename = ARGV[2]
ARGV[2] = ""
if ( match(c_filename, ".C") || match(c_filename, ".cc") ) {
cmdline = "g++"
}
else if (match(c_filename, ".c") || match(c_filename, ".i")) {
cmdline = "gcc"
}
else {
error("unknown extension for file " c_filename)
}
cmdline = cmdline " -g -S -o " asm_filename
cmdline = cmdline " " options
cmdline = cmdline " " c_filename
}
' $$ $FILENAME