1 # Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc.
2 # Contributed by Kelley Cook, June 2004.
3 # Original code from Neil Booth, May 2003.
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
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.
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/>.
19 # This Awk script reads in the option records generated from
20 # opt-gather.awk, combines the flags of duplicate options and generates a
23 # This program uses functions from opt-functions.awk
24 # Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h
35 # Collect the text and flags of each option into an array
37 if ($1 == "Language") {
42 name = opt_args("Mask", $1)
50 extra_masks[n_extra_masks++] = name
55 # Dump out an enumeration into a .h file.
56 # Combine the flags of duplicate options.
58 print "/* This file is auto-generated by opth-gen.awk. */"
60 print "#ifndef OPTIONS_H"
61 print "#define OPTIONS_H"
63 print "extern int target_flags;"
64 print "extern int target_flags_explicit;"
67 for (i = 0; i < n_opts; i++) {
68 name = var_name(flags[i]);
72 print "extern " var_type(flags[i]) name ";"
76 for (i = 0; i < n_opts; i++) {
77 name = opt_args("Mask", flags[i])
78 vname = var_name(flags[i])
83 if (name != "" && !flag_set_p("MaskExists", flags[i]))
84 print "#define " mask name " (1 << " masknum[vname]++ ")"
86 for (i = 0; i < n_extra_masks; i++) {
87 print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
90 for (var in masknum) {
91 if (masknum[var] > 31) {
93 print "#error too many target masks"
95 print "#error too many masks for " var
100 for (i = 0; i < n_opts; i++) {
101 name = opt_args("Mask", flags[i])
102 vname = var_name(flags[i])
104 mask = "OPTION_MASK_"
106 vname = "target_flags"
110 if (name != "" && !flag_set_p("MaskExists", flags[i]))
111 print "#define " macro name \
112 " ((" vname " & " mask name ") != 0)"
114 for (i = 0; i < n_extra_masks; i++) {
115 print "#define TARGET_" extra_masks[i] \
116 " ((target_flags & MASK_" extra_masks[i] ") != 0)"
120 for (i = 0; i < n_opts; i++) {
121 opt = opt_args("InverseMask", flags[i])
123 vname = var_name(flags[i])
125 mask = "OPTION_MASK_"
127 vname = "target_flags"
131 print "#define " macro nth_arg(1, opt) \
132 " ((" vname " & " mask nth_arg(0, opt) ") == 0)"
137 for (i = 0; i < n_langs; i++) {
138 macros[i] = "CL_" langs[i]
139 gsub( "[^A-Za-z0-9_]", "X", macros[i] )
140 s = substr(" ", length (macros[i]))
141 print "#define " macros[i] s " (1 << " i ")"
143 print "#define CL_LANG_ALL ((1 << " n_langs ") - 1)"
146 print "enum opt_code"
149 for (i = 0; i < n_opts; i++)
150 back_chain[i] = "N_OPTS";
152 for (i = 0; i < n_opts; i++) {
153 # Combine the flags of identical switches. Switches
154 # appear many times if they are handled by many front
156 while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
157 flags[i + 1] = flags[i] " " flags[i + 1];
161 len = length (opts[i]);
162 enum = "OPT_" opts[i]
163 if (opts[i] == "finline-limit=")
165 gsub ("[^A-Za-z0-9]", "_", enum)
167 # If this switch takes joined arguments, back-chain all
168 # subsequent switches to it for which it is a prefix. If
169 # a later switch S is a longer prefix of a switch T, T
170 # will be back-chained to S in a later iteration of this
171 # for() loop, which is what we want.
172 if (flag_set_p("Joined.*", flags[i])) {
173 for (j = i + 1; j < n_opts; j++) {
174 if (substr (opts[j], 1, len) != opts[i])
176 back_chain[j] = enum;
180 s = substr(" ", length (opts[i]))
187 hlp = "N_(\"" help[i] "\")";
189 print " " enum "," s "/* -" opts[i] " */"
195 print "#endif /* OPTIONS_H */"