1# $NetBSD: gen_errno_tables.awk,v 1.3 2005/12/11 12:19:56 christos Exp $
2
3# Copyright (c) 1999 Christopher G. Demetriou.  All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13# 3. All advertising materials mentioning features or use of this software
14#    must display the following acknowledgement:
15#      This product includes software developed by Christopher G. Demetriou
16#      for the NetBSD Project.
17# 4. The name of the author may not be used to endorse or promote products
18#    derived from this software without specific prior written permission
19#
20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31# Currently this script works with either gawk or nawk.
32#
33# Use it like:
34#
35#	awk -f gen_errno_tables.awk -v PREFIX=OSF1 netbsd_errno_hdr \
36#	    osf1_errno_hdr
37#
38# It puts results into 'c' and 'h' in current directory, which can then be
39# incorporated into emulation header files.
40#
41# Note that this script is not meant to generate perfectly pretty output.
42# Wanna be a formatting weenie, hand-edit the output (or make the script
43# output perfectly pretty lists).
44
45BEGIN {
46	nr_offset = 0;
47	idx = 0;
48
49	printf "" > "c"
50	printf "" > "h"
51}
52
53NR != (FNR + nr_offset) {
54	printf("file switch\n");
55	if (idx != 0) {
56		exit 1
57	}
58	nr_offset = (NR - FNR)
59	idx = 1;
60}
61
62/^#[ \t]*define[ \t]+E[A-Z0-9]*[ \t]+[0-9]+/ {
63	if ($1 == "#define") {
64		name=$2
65		val=$3
66	} else {
67		name=$3
68		val=$4
69	}
70
71	if (val_max[idx] < val) {
72		val_max[idx] = val;
73	}
74	if (mappings[idx, "val", val] == "") {
75		mappings[idx, "name", name] = val
76		mappings[idx, "val", val] = name
77	}
78}
79
80END {
81	if (idx != 1) {
82		exit 1
83	}
84
85	printf("    0,\n") >> "c"
86	for (i = 1; i <= val_max[0]; i++) {
87		nb_name = mappings[0, "val", i]
88		if (nb_name != "") {
89			otheros_val = mappings[1, "name", nb_name]
90			if (otheros_val != "") {
91				printf("    %s_%s,\t\t/* %s (%d) -> %d */\n",
92				    PREFIX, nb_name, nb_name, i,
93				    otheros_val) >> "c"
94			} else {
95				printf("    %s_%s,\t\t/* %s (%d) has no equivalent */\n",
96				    PREFIX, "ENOSYS", nb_name, i) >> "c"
97			}
98		}
99	}
100
101	for (i = 1; i <= val_max[1]; i++) {
102		if (mappings[1, "val", i] != "") {
103			printf("#define %s_%s\t\t%d\n",
104			    PREFIX, mappings[1, "val", i], i) >> "h"
105		}
106	}
107}
108