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#!/bin/sh -f
# Generate a source code listing for C or C++ code with assembler code. The
# listing is always written to stdout.
# Author: Igor Metz <metz@iam.unibe.ch>
# Revision 1.4 94/08/26 13:58:27 coxs <coxs@dg-rtp.dg.com>
# lister now guesses how to should be configured. Added elf and coff support.
#
# Revision 1.3 89/12/18 13:58:27 metz
# lister must now be configured before it can be used. This is done in the
# /bin/sh part of the code.
#
#
# Revision 1.2 89/08/16 17:35:02 metz
# Support for SPARC added.
#
# Revision 1.1 89/08/16 16:49:22 metz
# Initial revision
#
# Requires: gawk (may be it works also with nawk)
# usage: lister filename [compiler-options]
# Method:
# compile the source with -g option to assembler code, then merge the
# generated assembler code with the source code. Compiler options
# can be supplied on the command line (for example -O)
# To install lister, assign one of the supported values to the variable MYSYS:
# mc68020 for Motorola 68020 (Sun-3, ..)
# mc68030 for Motorola 68030 (Sun-3, ..)
# sparc for SPARC (SUN-4, ..)
# i386 for i386 (Sun i386, ...)
# i386-gnu-linux for i386 (GNU/Linux, ...)
# Guess what kind of objects we are creating and thus what type of assembler
# symbols to look for
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
# uncomment the line you need if the above guesses incorrectly:
# MYSYS=mc68020
# MYSYS=mc68030
# MYSYS=sparc
# MYSYS=i386
# MYSYS=i386-gnu-linux
# MYSYS=`mach` # this will work on Suns with SunOS > 4.0.0
# MYSYS=elf
# MYSYS=coff
WHOAMI=$0
if [ $# -gt 0 ] ; then
FILENAME=$1
shift
fi
exec gawk -v whoami=$WHOAMI -vsys=$MYSYS -voptions="$*" '
# commandline arguments:
# ARGV[0] = "gawk"
# ARGV[1] = processid
# ARGV[2] = filename
BEGIN {
if (ARGC != 3) {
usage()
exit 1
}
# Declaration of global variables
c_filename = ""
asm_filename = ""
cmdline = ""
asm_code = ""
c_code = ""
c_lineno = 0
oldlineno = 0
newlineno = 0
ignore_stabd = 0
num_of_fields = 0
# check processor architecture and set sourcecode line_hint accordingly
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);
# source line hint found. Split the line into fields separated by commas.
# num_of_fields is 4 for sparc, 3 for m68k
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]*$" ) {
# filename hint found
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)
}
# general cleanup
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) {
# construct filenames to use
asm_filename = "/tmp/lister" ARGV[1] ".s"
ARGV[1] = ""
c_filename = ARGV[2]
ARGV[2] = ""
# construct commandline to use
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
# now we append the compiler options specified by the user
cmdline = cmdline " " options
# last but not least: the name of the file to compile
cmdline = cmdline " " c_filename
}
' $$ $FILENAME
|
