1 # Copyright (C) 2003,2004,2005,2006 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 2, 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; if not, write to the Free Software
17 # Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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 opts.sh. */"
60 print "#ifndef OPTIONS_H"
61 print "#define OPTIONS_H"
63 print "extern int target_flags;"
66 for (i = 0; i < n_opts; i++) {
67 name = var_name(flags[i]);
71 print "extern " var_type(flags[i]) name ";"
75 for (i = 0; i < n_opts; i++) {
76 name = opt_args("Mask", flags[i])
77 vname = var_name(flags[i])
82 if (name != "" && !flag_set_p("MaskExists", flags[i]))
83 print "#define " mask name " (1 << " masknum[vname]++ ")"
85 for (i = 0; i < n_extra_masks; i++) {
86 print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
89 for (var in masknum) {
90 if (masknum[var] > 31) {
92 print "#error too many target masks"
94 print "#error too many masks for " var
99 for (i = 0; i < n_opts; i++) {
100 name = opt_args("Mask", flags[i])
101 vname = var_name(flags[i])
103 mask = "OPTION_MASK_"
105 vname = "target_flags"
109 if (name != "" && !flag_set_p("MaskExists", flags[i]))
110 print "#define " macro name \
111 " ((" vname " & " mask name ") != 0)"
113 for (i = 0; i < n_extra_masks; i++) {
114 print "#define TARGET_" extra_masks[i] \
115 " ((target_flags & MASK_" extra_masks[i] ") != 0)"
119 for (i = 0; i < n_opts; i++) {
120 opt = opt_args("InverseMask", flags[i])
122 vname = var_name(flags[i])
124 mask = "OPTION_MASK_"
126 vname = "target_flags"
130 print "#define " macro nth_arg(1, opt) \
131 " ((" vname " & " mask nth_arg(0, opt) ") == 0)"
136 for (i = 0; i < n_langs; i++) {
137 macros[i] = "CL_" langs[i]
138 gsub( "[^A-Za-z0-9_]", "X", macros[i] )
139 s = substr(" ", length (macros[i]))
140 print "#define " macros[i] s " (1 << " i ")"
144 print "enum opt_code"
147 for (i = 0; i < n_opts; i++)
148 back_chain[i] = "N_OPTS";
150 for (i = 0; i < n_opts; i++) {
151 # Combine the flags of identical switches. Switches
152 # appear many times if they are handled by many front
154 while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
155 flags[i + 1] = flags[i] " " flags[i + 1];
159 len = length (opts[i]);
160 enum = "OPT_" opts[i]
161 if (opts[i] == "finline-limit=")
163 gsub ("[^A-Za-z0-9]", "_", enum)
165 # If this switch takes joined arguments, back-chain all
166 # subsequent switches to it for which it is a prefix. If
167 # a later switch S is a longer prefix of a switch T, T
168 # will be back-chained to S in a later iteration of this
169 # for() loop, which is what we want.
170 if (flag_set_p("Joined.*", flags[i])) {
171 for (j = i + 1; j < n_opts; j++) {
172 if (substr (opts[j], 1, len) != opts[i])
174 back_chain[j] = enum;
178 s = substr(" ", length (opts[i]))
185 hlp = "N_(\"" help[i] "\")";
187 print " " enum "," s "/* -" opts[i] " */"
193 print "#endif /* OPTIONS_H */"