OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [optc-gen.awk] - Blame information for rev 827

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 38 julius
#  Copyright (C) 2003,2004, 2007 Free Software Foundation, Inc.
2
#  Contributed by Kelley Cook, June 2004.
3
#  Original code from Neil Booth, May 2003.
4
#
5
# This program is free software; you can redistribute it and/or modify it
6
# under the terms of the GNU General Public License as published by the
7
# Free Software Foundation; either version 3, or (at your option) any
8
# later version.
9
#
10
# This program is distributed in the hope that it will be useful,
11
# but WITHOUT ANY WARRANTY; without even the implied warranty of
12
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
# GNU General Public License for more details.
14
#
15
# You should have received a copy of the GNU General Public License
16
# along with this program; see the file COPYING3.  If not see
17
# <http://www.gnu.org/licenses/>.
18
 
19
# This Awk script reads in the option records generated from
20
# opt-gather.awk, combines the flags of duplicat options and generates a
21
# C file.
22
#
23
# This program uses functions from opt-functions.awk
24
#
25
# Usage: awk -f opt-functions.awk -f optc-gen.awk \
26
#            [-v header_name=header.h] < inputfile > options.c
27
 
28
BEGIN {
29
        n_opts = 0
30
        n_langs = 0
31
        quote = "\042"
32
        comma = ","
33
        FS=SUBSEP
34
        # Default the name of header created from opth-gen.awk to options.h
35
        if (header_name == "") header_name="options.h"
36
}
37
 
38
# Collect the text and flags of each option into an array
39
        {
40
                if ($1 == "Language") {
41
                        langs[n_langs] = $2
42
                        n_langs++;
43
                }
44
                else {
45
                        name = opt_args("Mask", $1)
46
                        if (name == "") {
47
                                opts[n_opts]  = $1
48
                                flags[n_opts] = $2
49
                                help[n_opts]  = $3
50
                                n_opts++;
51
                        }
52
                }
53
        }
54
 
55
# Dump that array of options into a C file.
56
END {
57
print "/* This file is auto-generated by opts.sh.  */"
58
print ""
59
n_headers = split(header_name, headers, " ")
60
for (i = 1; i <= n_headers; i++)
61
        print "#include " quote headers[i] quote
62
print "#include " quote "opts.h" quote
63
print "#include " quote "intl.h" quote
64
print ""
65
print "#ifdef GCC_DRIVER"
66
print "int target_flags;"
67
print "#endif /* GCC_DRIVER */"
68
print ""
69
 
70
for (i = 0; i < n_opts; i++) {
71
        name = var_name(flags[i]);
72
        if (name == "")
73
                continue;
74
 
75
        if (flag_set_p("VarExists", flags[i])) {
76
                # Need it for the gcc driver.
77
                if (name in var_seen)
78
                        continue;
79
                init = ""
80
                gcc_driver = 1
81
        }
82
        else {
83
                init = opt_args("Init", flags[i])
84
                if (init != "")
85
                        init = " = " init;
86
                else if (name in var_seen)
87
                        continue;
88
                gcc_driver = 0
89
        }
90
 
91
        if (gcc_driver == 1)
92
                print "#ifdef GCC_DRIVER"
93
        print "/* Set by -" opts[i] "."
94
        print "   " help[i] "  */"
95
        print var_type(flags[i]) name init ";"
96
        if (gcc_driver == 1)
97
                print "#endif /* GCC_DRIVER */"
98
        print ""
99
 
100
        var_seen[name] = 1;
101
}
102
 
103
print ""
104
print "/* Local state variables.  */"
105
for (i = 0; i < n_opts; i++) {
106
        name = static_var(opts[i], flags[i]);
107
        if (name != "")
108
                print "static " var_type(flags[i]) name ";"
109
}
110
print ""
111
 
112
print "const char * const lang_names[] =\n{"
113
for (i = 0; i < n_langs; i++) {
114
        macros[i] = "CL_" langs[i]
115
        gsub( "[^A-Za-z0-9_]", "X", macros[i] )
116
        s = substr("         ", length (macros[i]))
117
        print "  " quote langs[i] quote ","
118
    }
119
 
120
print "  0\n};\n"
121
print "const unsigned int cl_options_count = N_OPTS;\n"
122
 
123
print "const struct cl_option cl_options[] =\n{"
124
 
125
j = 0
126
for (i = 0; i < n_opts; i++) {
127
        back_chain[i] = "N_OPTS";
128
        indices[opts[i]] = j;
129
        # Combine the flags of identical switches.  Switches
130
        # appear many times if they are handled by many front
131
        # ends, for example.
132
        while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
133
                flags[i + 1] = flags[i] " " flags[i + 1];
134
                i++;
135
                back_chain[i] = "N_OPTS";
136
                indices[opts[i]] = j;
137
        }
138
        j++;
139
}
140
 
141
for (i = 0; i < n_opts; i++) {
142
        # Combine the flags of identical switches.  Switches
143
        # appear many times if they are handled by many front
144
        # ends, for example.
145
        while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
146
                flags[i + 1] = flags[i] " " flags[i + 1];
147
                i++;
148
        }
149
 
150
        len = length (opts[i]);
151
        enum = "OPT_" opts[i]
152
        if (opts[i] == "finline-limit=")
153
                enum = enum "eq"
154
        gsub ("[^A-Za-z0-9]", "_", enum)
155
 
156
        # If this switch takes joined arguments, back-chain all
157
        # subsequent switches to it for which it is a prefix.  If
158
        # a later switch S is a longer prefix of a switch T, T
159
        # will be back-chained to S in a later iteration of this
160
        # for() loop, which is what we want.
161
        if (flag_set_p("Joined.*", flags[i])) {
162
                for (j = i + 1; j < n_opts; j++) {
163
                        if (substr (opts[j], 1, len) != opts[i])
164
                                break;
165
                        back_chain[j] = enum;
166
                }
167
        }
168
 
169
        s = substr("                                  ", length (opts[i]))
170
        if (i + 1 == n_opts)
171
                comma = ""
172
 
173
        if (help[i] == "")
174
                hlp = "0"
175
        else
176
                hlp = quote help[i] quote;
177
 
178
        neg = opt_args("Negative", flags[i]);
179
        if (neg != "")
180
                idx = indices[neg]
181
        else {
182
                if (flag_set_p("RejectNegative", flags[i]))
183
                        idx = -1;
184
                else {
185
                        if (opts[i] ~ "^[Wfm]")
186
                                idx = indices[opts[i]];
187
                        else
188
                                idx = -1;
189
                }
190
        }
191
        printf("  { %c-%s%c,\n    %s,\n    %s, %u, %d,\n",
192
               quote, opts[i], quote, hlp, back_chain[i], len, idx)
193
        condition = opt_args("Condition", flags[i])
194
        cl_flags = switch_flags(flags[i])
195
        if (condition != "")
196
                printf("#if %s\n" \
197
                       "    %s,\n" \
198
                       "#else\n" \
199
                       "    CL_DISABLED,\n" \
200
                       "#endif\n",
201
                       condition, cl_flags, cl_flags)
202
        else
203
                printf("    %s,\n", cl_flags)
204
        printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),
205
               var_set(flags[i]), comma)
206
}
207
 
208
print "};"
209
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.