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      1 # $NetBSD: syscallargs.awk,v 1.1 2014/09/05 18:09:37 matt Exp $
      2 #
      3 # Copyright (c) 2014 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # This code is derived from software contributed to The NetBSD Foundation
      7 # by Matt Thomas of 3am Software Foundry.
      8 #
      9 # Redistribution and use in source and binary forms, with or without
     10 # modification, are permitted provided that the following conditions
     11 # are met:
     12 # 1. Redistributions of source code must retain the above copyright
     13 #    notice, this list of conditions and the following disclaimer.
     14 # 2. Redistributions in binary form must reproduce the above copyright
     15 #    notice, this list of conditions and the following disclaimer in the
     16 #    documentation and/or other materials provided with the distribution.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28 # POSSIBILITY OF SUCH DAMAGE.
     29 
     30 BEGIN {
     31 }
     32 
     33 /#define.SYS_MAXSYS.*/ { next; }
     34 
     35 /#define.SYS_.*/ {
     36 	x = substr($2, 5);
     37 	syscall[x] = "0";
     38 }
     39 
     40 /^check_syscall_args/ {
     41 	l = length() - 20;
     42 	x = substr($0, 20, l);
     43 	y = gensub("sys_", "", 1, x);
     44 	syscall[y] = sprintf("sizeof(struct %s_args) / sizeof(register_t)", x);
     45 }
     46 
     47 END {
     48 	print "include <sys/types.h>"
     49 	print "include <sys/lwp.h>"
     50 	print "include <sys/ucontext.h>"
     51 	print "include <sys/syscallargs.h>"
     52 	print;
     53 	for (i in syscall) {
     54 		printf "define NSYSARGS_%s %s\n", i, syscall[i];
     55 	}
     56 }
     57