1 # Copyright (C) 2003,2004,2005,2006,2007,2008, 2010
2 # Free Software Foundation, Inc.
3 # Contributed by Kelley Cook, June 2004.
4 # Original code from Neil Booth, May 2003.
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by the
8 # Free Software Foundation; either version 3, or (at your option) any
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; see the file COPYING3. If not see
18 # <http://www.gnu.org/licenses/>.
20 # This Awk script reads in the option records generated from
21 # opt-gather.awk, combines the flags of duplicate options and generates a
24 # This program uses functions from opt-functions.awk
25 # Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h
36 # Collect the text and flags of each option into an array
38 if ($1 == "Language") {
42 else if ($1 == "TargetSave") {
43 # Make sure the declarations are put in source order
44 target_save_decl[n_target_save] = $2
47 else if ($1 == "Variable") {
48 extra_vars[n_extra_vars] = $2
52 name = opt_args("Mask", $1)
60 extra_masks[n_extra_masks++] = name
65 # Dump out an enumeration into a .h file.
66 # Combine the flags of duplicate options.
68 print "/* This file is auto-generated by opth-gen.awk. */"
70 print "#ifndef OPTIONS_H"
71 print "#define OPTIONS_H"
73 print "extern int target_flags_explicit;"
78 print "#ifndef GENERATOR_FILE"
79 print "struct gcc_options\n{"
82 for (i = 0; i < n_extra_vars; i++) {
88 sub("^.*[ *]", "", name)
89 sub(" *" name "$", "", type)
91 print "#ifdef GENERATOR_FILE"
92 print "extern " orig_var ";"
94 print " " type " x_" name ";"
95 print "#define " name " global_options.x_" name
99 for (i = 0; i < n_opts; i++) {
100 if (flag_set_p("Save", flags[i]))
103 name = var_name(flags[i]);
107 if (name in var_seen)
111 print "#ifdef GENERATOR_FILE"
112 print "extern " var_type(flags[i]) name ";"
114 print " " var_type(flags[i]) "x_" name ";"
115 print "#define " name " global_options.x_" name
118 for (i = 0; i < n_opts; i++) {
119 name = static_var(opts[i], flags[i]);
121 print "#ifndef GENERATOR_FILE"
122 print " " var_type(flags[i]) "x_" name ";"
123 print "#define x_" name " do_not_use"
127 print "#ifndef GENERATOR_FILE"
129 print "extern struct gcc_options global_options;"
133 # All of the optimization switches gathered together so they can be saved and restored.
134 # This will allow attribute((cold)) to turn on space optimization.
136 # Change the type of normal switches from int to unsigned char to save space.
137 # Also, order the structure so that pointer fields occur first, then int
138 # fields, and then char fields to provide the best packing.
140 print "#if !defined(GCC_DRIVER) && !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)"
142 print "/* Structure to save/restore optimization and target specific options. */";
143 print "struct GTY(()) cl_optimization";
150 var_opt_char[0] = "unsigned char x_optimize";
151 var_opt_char[1] = "unsigned char x_optimize_size";
153 for (i = 0; i < n_opts; i++) {
154 if (flag_set_p("Optimization", flags[i])) {
155 name = var_name(flags[i])
159 if(name in var_opt_seen)
162 var_opt_seen[name]++;
163 otype = var_type_struct(flags[i]);
164 if (otype ~ "^((un)?signed +)?int *$")
165 var_opt_int[n_opt_int++] = otype "x_" name;
167 else if (otype ~ "^((un)?signed +)?short *$")
168 var_opt_short[n_opt_short++] = otype "x_" name;
170 else if (otype ~ "^((un)?signed +)?char *$")
171 var_opt_char[n_opt_char++] = otype "x_" name;
174 var_opt_other[n_opt_other++] = otype "x_" name;
178 for (i = 0; i < n_opt_other; i++) {
179 print " " var_opt_other[i] ";";
182 for (i = 0; i < n_opt_int; i++) {
183 print " " var_opt_int[i] ";";
186 for (i = 0; i < n_opt_short; i++) {
187 print " " var_opt_short[i] ";";
190 for (i = 0; i < n_opt_char; i++) {
191 print " " var_opt_char[i] ";";
197 # Target and optimization save/restore/print functions.
198 print "/* Structure to save/restore selected target specific options. */";
199 print "struct GTY(()) cl_target_option";
207 for (i = 0; i < n_target_save; i++) {
208 if (target_save_decl[i] ~ "^((un)?signed +)?int +[_a-zA-Z0-9]+$")
209 var_target_int[n_target_int++] = target_save_decl[i];
211 else if (target_save_decl[i] ~ "^((un)?signed +)?short +[_a-zA-Z0-9]+$")
212 var_target_short[n_target_short++] = target_save_decl[i];
214 else if (target_save_decl[i] ~ "^((un)?signed +)?char +[_a-zA-Z0-9]+$")
215 var_target_char[n_target_char++] = target_save_decl[i];
218 var_target_other[n_target_other++] = target_save_decl[i];
222 for (i = 0; i < n_opts; i++) {
223 if (flag_set_p("Save", flags[i])) {
224 name = var_name(flags[i])
226 name = "target_flags";
228 if(name in var_save_seen)
231 var_save_seen[name]++;
232 otype = var_type_struct(flags[i])
233 if (otype ~ "^((un)?signed +)?int *$")
234 var_target_int[n_target_int++] = otype "x_" name;
236 else if (otype ~ "^((un)?signed +)?short *$")
237 var_target_short[n_target_short++] = otype "x_" name;
239 else if (otype ~ "^((un)?signed +)?char *$")
240 var_target_char[n_target_char++] = otype "x_" name;
243 var_target_other[n_target_other++] = otype "x_" name;
247 var_target_int[n_target_int++] = "int x_target_flags";
250 for (i = 0; i < n_target_other; i++) {
251 print " " var_target_other[i] ";";
254 for (i = 0; i < n_target_int; i++) {
255 print " " var_target_int[i] ";";
258 for (i = 0; i < n_target_short; i++) {
259 print " " var_target_short[i] ";";
262 for (i = 0; i < n_target_char; i++) {
263 print " " var_target_char[i] ";";
269 print "/* Save optimization variables into a structure. */"
270 print "extern void cl_optimization_save (struct cl_optimization *, struct gcc_options *);";
272 print "/* Restore optimization variables from a structure. */";
273 print "extern void cl_optimization_restore (struct gcc_options *, struct cl_optimization *);";
275 print "/* Print optimization variables from a structure. */";
276 print "extern void cl_optimization_print (FILE *, int, struct cl_optimization *);";
278 print "/* Save selected option variables into a structure. */"
279 print "extern void cl_target_option_save (struct cl_target_option *, struct gcc_options *);";
281 print "/* Restore selected option variables from a structure. */"
282 print "extern void cl_target_option_restore (struct gcc_options *, struct cl_target_option *);";
284 print "/* Print target option variables from a structure. */";
285 print "extern void cl_target_option_print (FILE *, int, struct cl_target_option *);";
289 for (i = 0; i < n_opts; i++) {
290 name = opt_args("Mask", flags[i])
291 vname = var_name(flags[i])
294 mask = "OPTION_MASK_"
296 if (name != "" && !flag_set_p("MaskExists", flags[i]))
297 print "#define " mask name " (1 << " masknum[vname]++ ")"
299 for (i = 0; i < n_extra_masks; i++) {
300 print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
303 for (var in masknum) {
304 if (masknum[var] > 31) {
306 print "#error too many target masks"
308 print "#error too many masks for " var
313 for (i = 0; i < n_opts; i++) {
314 name = opt_args("Mask", flags[i])
315 vname = var_name(flags[i])
317 mask = "OPTION_MASK_"
319 vname = "target_flags"
323 if (name != "" && !flag_set_p("MaskExists", flags[i]))
324 print "#define " macro name \
325 " ((" vname " & " mask name ") != 0)"
327 for (i = 0; i < n_extra_masks; i++) {
328 print "#define TARGET_" extra_masks[i] \
329 " ((target_flags & MASK_" extra_masks[i] ") != 0)"
333 for (i = 0; i < n_opts; i++) {
334 opt = opt_args("InverseMask", flags[i])
336 vname = var_name(flags[i])
338 mask = "OPTION_MASK_"
340 vname = "target_flags"
344 print "#define " macro nth_arg(1, opt) \
345 " ((" vname " & " mask nth_arg(0, opt) ") == 0)"
350 for (i = 0; i < n_langs; i++) {
351 macros[i] = "CL_" langs[i]
352 gsub( "[^A-Za-z0-9_]", "X", macros[i] )
353 s = substr(" ", length (macros[i]))
354 print "#define " macros[i] s " (1 << " i ")"
356 print "#define CL_LANG_ALL ((1 << " n_langs ") - 1)"
359 print "enum opt_code"
362 for (i = 0; i < n_opts; i++)
363 back_chain[i] = "N_OPTS";
366 for (i = 0; i < n_opts; i++) {
367 # Combine the flags of identical switches. Switches
368 # appear many times if they are handled by many front
370 while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
371 flags[i + 1] = flags[i] " " flags[i + 1];
375 len = length (opts[i]);
376 enum = opt_enum(opts[i])
377 enum_string = enum " = " enum_value ","
379 # Aliases do not get enumeration names.
380 if ((flag_set_p("Alias.*", flags[i]) \
381 && !flag_set_p("SeparateAlias", flags[i])) \
382 || flag_set_p("Ignore", flags[i])) {
383 enum_string = "/* " enum_string " */"
386 # If this switch takes joined arguments, back-chain all
387 # subsequent switches to it for which it is a prefix. If
388 # a later switch S is a longer prefix of a switch T, T
389 # will be back-chained to S in a later iteration of this
390 # for() loop, which is what we want.
391 if (flag_set_p("Joined.*", flags[i])) {
392 for (j = i + 1; j < n_opts; j++) {
393 if (substr (opts[j], 1, len) != opts[i])
395 back_chain[j] = enum;
400 length (enum_string))
405 hlp = "N_(\"" help[i] "\")";
407 print " " enum_string s "/* -" opts[i] " */"
412 print " OPT_SPECIAL_unknown,"
413 print " OPT_SPECIAL_ignore,"
414 print " OPT_SPECIAL_program_name,"
415 print " OPT_SPECIAL_input_file"
418 print "#endif /* OPTIONS_H */"