MAKEDEV.awk revision 1.1 
1#!/usr/bin/awk -
2#
3#	$NetBSD: MAKEDEV.awk,v 1.1 2003/10/13 09:37:45 jdolecek Exp $
4#
5# Copyright (c) 2003 The NetBSD Foundation, Inc.
6# All rights reserved.
7#
8# This code is derived from software contributed to The NetBSD Foundation
9# by Jaromir Dolecek.
10#
11# Redistribution and use in source and binary forms, with or without
12# modification, are permitted provided that the following conditions
13# are met:
14# 1. Redistributions of source code must retain the above copyright
15#    notice, this list of conditions and the following disclaimer.
16# 2. Redistributions in binary form must reproduce the above copyright
17#    notice, this list of conditions and the following disclaimer in the
18#    documentation and/or other materials provided with the distribution.
19# 3. All advertising materials mentioning features or use of this software
20#    must display the following acknowledgement:
21#        This product includes software developed by the NetBSD
22#        Foundation, Inc. and its contributors.
23# 4. Neither the name of The NetBSD Foundation nor the names of its
24#    contributors may be used to endorse or promote products derived
25#    from this software without specific prior written permission.
26#
27# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37# POSSIBILITY OF SUCH DAMAGE.
38#
39
40BEGIN {
41	# top of source tree, used to find major number list in kernel
42	# sources
43	top = ENVIRON["NETBSDSRCDIR"]
44	if (!top)
45		top = ".."
46	top = top "/sys/"
47	if (system("test -d '" top "'") != 0) {
48		print "ERROR: didn't find top of kernel tree ('" top "' not a directory)" > "/dev/stderr"
49		exit 1
50	}
51
52	machine = ENVIRON["MACHINE"]
53	if (!machine)
54		machine = "i386"	# XXX for testing
55	maarch = ENVIRON["MACHINE_ARCH"]
56
57	# file with major definitions
58	majors[0] = "conf/majors"
59	if (maarch == "arm32")
60		majors[1] = "arch/arm/conf/majors.arm32";
61	else if (machine == "evbsh5") {
62		majors[1] = "arch/evbsh5/conf/majors.evbsh5";
63		majors[2] = "arch/sh5/conf/majors.sh5";
64	} else
65		majors[1] = "arch/" machine "/conf/majors." machine;
66
67	# process all files with majors and fill the chr[] and blk[]
68	# arrays, used in template processing
69	for(m in majors) {
70		file = top majors[m]
71		while (getline < file) {
72			if ($1 == "device-major") {
73				if ($3 == "char") {
74					chr[$2] = $4
75					if ($5 == "block")
76						blk[$2] = $6
77				} else if ($3 == "block")
78					blk[$2] = $4
79			}
80		}
81	}
82
83	# initially no substitutions
84	devsubst = 0
85	deventry = ""
86}
87
88/%MI_DEVICES_BEGIN%/ {
89	devsubst = 1;
90	next
91}
92
93/%MI_DEVICES_END%/ {
94	devsubst = 0;
95	next
96}
97
98{
99	# if device substitutions are not active, do nothing more
100	if (!devsubst) {
101		print
102		next
103	}
104}
105
106# first line of device entry
107/^[a-z].*\)$/ {
108	if (length(deventry) > 0) {
109		# We have a previous entry to print. Replace all known
110		# character and block devices. If no unknown character
111		# or block device definition remains within the entry,
112		# print it to output, otherwise scrap it.
113		for(c in chr)
114			gsub("%" c "_chr%", chr[c], deventry)
115		for(b in blk)
116			gsub("%" b "_blk%", blk[b], deventry)
117
118		if (deventry !~ "%[a-z]*_chr%" && deventry !~ "%[a-z]*_blk%")
119			print deventry
120	}
121	deventry = $0
122	next
123}
124
125# template line within device substitution section - just keep appending
126# to the current entry
127{
128	deventry = deventry "\n" $0
129}
130