1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
# Copyright (C) 2003,2004,2005,2006 Free Software Foundation, Inc.
# Contributed by Kelley Cook, June 2004.
# Original code from Neil Booth, May 2003.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# This program 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
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# This Awk script reads in the option records generated from
# opt-gather.awk, combines the flags of duplicate options and generates a
# C header file.
#
# This program uses functions from opt-functions.awk
# Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h
BEGIN {
n_opts = 0
n_langs = 0
n_extra_masks = 0
quote = "\042"
comma = ","
FS=SUBSEP
}
# Collect the text and flags of each option into an array
{
if ($1 == "Language") {
langs[n_langs] = $2
n_langs++;
}
else {
name = opt_args("Mask", $1)
if (name == "") {
opts[n_opts] = $1
flags[n_opts] = $2
help[n_opts] = $3
n_opts++;
}
else {
extra_masks[n_extra_masks++] = name
}
}
}
# Dump out an enumeration into a .h file.
# Combine the flags of duplicate options.
END {
print "/* This file is auto-generated by opts.sh. */"
print ""
print "#ifndef OPTIONS_H"
print "#define OPTIONS_H"
print ""
print "extern int target_flags;"
print ""
for (i = 0; i < n_opts; i++) {
name = var_name(flags[i]);
if (name == "")
continue;
print "extern " var_type(flags[i]) name ";"
}
print ""
for (i = 0; i < n_opts; i++) {
name = opt_args("Mask", flags[i])
vname = var_name(flags[i])
mask = "MASK_"
if (vname != "") {
mask = "OPTION_MASK_"
}
if (name != "" && !flag_set_p("MaskExists", flags[i]))
print "#define " mask name " (1 << " masknum[vname]++ ")"
}
for (i = 0; i < n_extra_masks; i++) {
print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
}
for (var in masknum) {
if (masknum[var] > 32) {
if (var == "")
print "#error too many target masks"
else
print "#error too many masks for " var
}
}
print ""
for (i = 0; i < n_opts; i++) {
name = opt_args("Mask", flags[i])
vname = var_name(flags[i])
macro = "OPTION_"
mask = "OPTION_MASK_"
if (vname == "") {
vname = "target_flags"
macro = "TARGET_"
mask = "MASK_"
}
if (name != "" && !flag_set_p("MaskExists", flags[i]))
print "#define " macro name \
" ((" vname " & " mask name ") != 0)"
}
for (i = 0; i < n_extra_masks; i++) {
print "#define TARGET_" extra_masks[i] \
" ((target_flags & MASK_" extra_masks[i] ") != 0)"
}
print ""
for (i = 0; i < n_opts; i++) {
opt = opt_args("InverseMask", flags[i])
if (opt ~ ",") {
vname = var_name(flags[i])
macro = "OPTION_"
mask = "OPTION_MASK_"
if (vname == "") {
vname = "target_flags"
macro = "TARGET_"
mask = "MASK_"
}
print "#define " macro nth_arg(1, opt) \
" ((" vname " & " mask nth_arg(0, opt) ") == 0)"
}
}
print ""
for (i = 0; i < n_langs; i++) {
macros[i] = "CL_" langs[i]
gsub( "[^A-Za-z0-9_]", "X", macros[i] )
s = substr(" ", length (macros[i]))
print "#define " macros[i] s " (1 << " i ")"
}
print ""
print "enum opt_code"
print "{"
for (i = 0; i < n_opts; i++)
back_chain[i] = "N_OPTS";
for (i = 0; i < n_opts; i++) {
# Combine the flags of identical switches. Switches
# appear many times if they are handled by many front
# ends, for example.
while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
flags[i + 1] = flags[i] " " flags[i + 1];
i++;
}
len = length (opts[i]);
enum = "OPT_" opts[i]
if (opts[i] == "finline-limit=")
enum = enum "eq"
gsub ("[^A-Za-z0-9]", "_", enum)
# If this switch takes joined arguments, back-chain all
# subsequent switches to it for which it is a prefix. If
# a later switch S is a longer prefix of a switch T, T
# will be back-chained to S in a later iteration of this
# for() loop, which is what we want.
if (flag_set_p("Joined.*", flags[i])) {
for (j = i + 1; j < n_opts; j++) {
if (substr (opts[j], 1, len) != opts[i])
break;
back_chain[j] = enum;
}
}
s = substr(" ", length (opts[i]))
if (i + 1 == n_opts)
comma = ""
if (help[i] == "")
hlp = "0"
else
hlp = "N_(\"" help[i] "\")";
print " " enum "," s "/* -" opts[i] " */"
}
print " N_OPTS"
print "};"
print ""
print "#endif /* OPTIONS_H */"
}
|
