## Copyright (c) 1994, 1998 University of Utah and the Flux Group.# All rights reserved.# # This file is part of the Flux OSKit.  The OSKit is free software, also known# as "open source;" you can redistribute it and/or modify it under the terms# of the GNU General Public License (GPL), version 2, as published by the Free# Software Foundation (FSF).  To explore alternate licensing terms, contact# the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.# # The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS# FOR A PARTICULAR PURPOSE.  See the GPL for more details.  You should have# received a copy of the GPL along with the OSKit; see the file COPYING.  If# not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.# # This awk program takes a `.sym' file and produces a `.c' file,# which can then be compiled to assembly language# and run through a magic sed transformation (see GNUmakerules),# to produce a `.h' file containing absolute numeric symbol definitions# suitable for inclusion in assembly language source files and such.# This way, convenient symbols can be defined based on structure offsets,# arbitrary C expressions including sizeof() expressions, etc.## Since this mechanism doesn't depend on running a program# on the machine the code is to run on (the host machine),# things still work fine during cross-compilation.# BEGIN {	bogus_printed = "no" 	# De-privatize all class members so we can take their offsets.	print "#define class struct";	print "#define private public";} # Start the bogus function just before the first sym directive,# so that any #includes higher in the file don't get stuffed inside it./^[a-z]/ {	if (bogus_printed == "no")	{		print "void bogus() {";		bogus_printed = "yes";	}} # Take an arbitrarily complex C symbol or expression# and turn it into a simple #define'd constant symbol./^expr/ {	printf "__asm (\"\\n#define %s mAgIc%%0\" : : \"i\" (%s));\n", $2, $3;} # Output a symbol defining the size of a C structure./^size/ {	printf "__asm (\"\\n#define %s mAgIc%%0\" : : \"i\" (sizeof(struct %s)));\n",		$2, $3;} # Output a symbol defining the byte offset of an element of a C structure./^offset/ {	printf "__asm (\"\\n#define %s mAgIc%%0\" : : \"i\" (&((struct %s*)0)->%s));\n",		$2, $3, $4;} # Copy through all preprocessor directives./^#/ {	print} END {	print "}"}