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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
|
/* Command line option handling.
Copyright (C) 2002-2023 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_OPTS_H
#define GCC_OPTS_H
#include "obstack.h"
/* Specifies how a switch's VAR_VALUE relates to its FLAG_VAR. */
enum cl_var_type {
/* The switch is an integer value. */
CLVC_INTEGER,
/* The switch is enabled when FLAG_VAR == VAR_VALUE. */
CLVC_EQUAL,
/* The switch is enabled when VAR_VALUE is not set in FLAG_VAR. */
CLVC_BIT_CLEAR,
/* The switch is enabled when VAR_VALUE is set in FLAG_VAR. */
CLVC_BIT_SET,
/* The switch is enabled when FLAG_VAR is less than HOST_WIDE_INT_M1U. */
CLVC_SIZE,
/* The switch takes a string argument and FLAG_VAR points to that
argument. */
CLVC_STRING,
/* The switch takes an enumerated argument (VAR_ENUM says what
enumeration) and FLAG_VAR points to that argument. */
CLVC_ENUM,
/* The switch should be stored in the VEC pointed to by FLAG_VAR for
later processing. */
CLVC_DEFER
};
/* Values for var_value member of CLVC_ENUM. */
enum cl_enum_var_value {
/* Enum without EnumSet or EnumBitSet. */
CLEV_NORMAL,
/* EnumSet. */
CLEV_SET,
/* EnumBitSet. */
CLEV_BITSET
};
struct cl_option
{
/* Text of the option, including initial '-'. */
const char *opt_text;
/* Help text for --help, or NULL. */
const char *help;
/* Error message for missing argument, or NULL. */
const char *missing_argument_error;
/* Warning to give when this option is used, or NULL. */
const char *warn_message;
/* Argument of alias target when positive option given, or NULL. */
const char *alias_arg;
/* Argument of alias target when negative option given, or NULL. */
const char *neg_alias_arg;
/* Alias target, or N_OPTS if not an alias. */
unsigned short alias_target;
/* Previous option that is an initial substring of this one, or
N_OPTS if none. */
unsigned short back_chain;
/* Option length, not including initial '-'. */
unsigned char opt_len;
/* Next option in a sequence marked with Negative, or -1 if none.
For a single option with both a negative and a positve form
(such as -Wall and -Wno-all), NEG_IDX is equal to the option's
own index (i.e., cl_options[IDX].neg_idx == IDX holds). */
int neg_index;
/* CL_* flags for this option. */
unsigned int flags;
/* Disabled in this configuration. */
BOOL_BITFIELD cl_disabled : 1;
/* Options marked with CL_SEPARATE take a number of separate
arguments (1 to 4) that is one more than the number in this
bit-field. */
unsigned int cl_separate_nargs : 2;
/* Option is an alias when used with separate argument. */
BOOL_BITFIELD cl_separate_alias : 1;
/* Alias to negative form of option. */
BOOL_BITFIELD cl_negative_alias : 1;
/* Option takes no argument in the driver. */
BOOL_BITFIELD cl_no_driver_arg : 1;
/* Reject this option in the driver. */
BOOL_BITFIELD cl_reject_driver : 1;
/* Reject no- form. */
BOOL_BITFIELD cl_reject_negative : 1;
/* Missing argument OK (joined). */
BOOL_BITFIELD cl_missing_ok : 1;
/* Argument is an integer >=0. */
BOOL_BITFIELD cl_uinteger : 1;
/* Argument is a HOST_WIDE_INT. */
BOOL_BITFIELD cl_host_wide_int : 1;
/* Argument should be converted to lowercase. */
BOOL_BITFIELD cl_tolower : 1;
/* Argument is an unsigned integer with an optional byte suffix. */
BOOL_BITFIELD cl_byte_size: 1;
/* Offset of field for this option in struct gcc_options, or
(unsigned short) -1 if none. */
unsigned short flag_var_offset;
/* Index in cl_enums of enum used for this option's arguments, for
CLVC_ENUM options. */
unsigned short var_enum;
/* How this option's value is determined and sets a field. */
enum cl_var_type var_type;
/* Value or bit-mask with which to set a field. */
HOST_WIDE_INT var_value;
/* Range info minimum, or -1. */
int range_min;
/* Range info maximum, or -1. */
int range_max;
};
struct cl_var
{
/* Name of the variable. */
const char *var_name;
/* Offset of field for this var in struct gcc_options. */
unsigned short var_offset;
};
/* Records that the state of an option consists of SIZE bytes starting
at DATA. DATA might point to CH in some cases. */
struct cl_option_state {
const void *data;
size_t size;
char ch;
};
extern const struct cl_option cl_options[];
extern const unsigned int cl_options_count;
#ifdef ENABLE_PLUGIN
extern const struct cl_var cl_vars[];
#endif
extern const char *const lang_names[];
extern const unsigned int cl_lang_count;
#define CL_PARAMS (1U << 16) /* Fake entry. Used to display --param info with --help. */
#define CL_WARNING (1U << 17) /* Enables an (optional) warning message. */
#define CL_OPTIMIZATION (1U << 18) /* Enables an (optional) optimization. */
#define CL_DRIVER (1U << 19) /* Driver option. */
#define CL_TARGET (1U << 20) /* Target-specific option. */
#define CL_COMMON (1U << 21) /* Language-independent. */
#define CL_MIN_OPTION_CLASS CL_PARAMS
#define CL_MAX_OPTION_CLASS CL_COMMON
/* From here on the bits describe attributes of the options.
Before this point the bits have described the class of the option.
This distinction is important because --help will not list options
which only have these higher bits set. */
#define CL_JOINED (1U << 22) /* If takes joined argument. */
#define CL_SEPARATE (1U << 23) /* If takes a separate argument. */
#define CL_UNDOCUMENTED (1U << 24) /* Do not output with --help. */
#define CL_NO_DWARF_RECORD (1U << 25) /* Do not add to producer string. */
#define CL_PCH_IGNORE (1U << 26) /* Do compare state for pch. */
/* Flags for an enumerated option argument. */
#define CL_ENUM_CANONICAL (1 << 0) /* Canonical for this value. */
#define CL_ENUM_DRIVER_ONLY (1 << 1) /* Only accepted in the driver. */
#define CL_ENUM_SET_SHIFT 2 /* Shift for enum set. */
/* Structure describing an enumerated option argument. */
struct cl_enum_arg
{
/* The argument text, or NULL at the end of the array. */
const char *arg;
/* The corresponding integer value. */
int value;
/* Flags associated with this argument. */
unsigned int flags;
};
/* Structure describing an enumerated set of option arguments. */
struct cl_enum
{
/* Help text, or NULL if the values should not be listed in --help
output. */
const char *help;
/* Error message for unknown arguments, or NULL to use a generic
error. */
const char *unknown_error;
/* Array of possible values. */
const struct cl_enum_arg *values;
/* The size of the type used to store a value. */
size_t var_size;
/* Function to set a variable of this type. */
void (*set) (void *var, int value);
/* Function to get the value of a variable of this type. */
int (*get) (const void *var);
};
extern const struct cl_enum cl_enums[];
extern const unsigned int cl_enums_count;
/* Possible ways in which a command-line option may be erroneous.
These do not include not being known at all; an option index of
OPT_SPECIAL_unknown is used for that. */
#define CL_ERR_DISABLED (1 << 0) /* Disabled in this configuration. */
#define CL_ERR_MISSING_ARG (1 << 1) /* Argument required but missing. */
#define CL_ERR_WRONG_LANG (1 << 2) /* Option for wrong language. */
#define CL_ERR_UINT_ARG (1 << 3) /* Bad unsigned integer argument. */
#define CL_ERR_INT_RANGE_ARG (1 << 4) /* Bad unsigned integer argument. */
#define CL_ERR_ENUM_ARG (1 << 5) /* Bad enumerated argument. */
#define CL_ERR_NEGATIVE (1 << 6) /* Negative form of option
not permitted (together
with OPT_SPECIAL_unknown). */
#define CL_ERR_ENUM_SET_ARG (1 << 7) /* Bad argument of enumerated set. */
/* Structure describing the result of decoding an option. */
struct cl_decoded_option
{
/* The index of this option, or an OPT_SPECIAL_* value for
non-options and unknown options. */
size_t opt_index;
/* Any warning to give for use of this option, or NULL if none. */
const char *warn_message;
/* The string argument, or NULL if none. For OPT_SPECIAL_* cases,
the option or non-option command-line argument. */
const char *arg;
/* The original text of option plus arguments, with separate argv
elements concatenated into one string with spaces separating
them. This is for such uses as diagnostics and
-frecord-gcc-switches. */
const char *orig_option_with_args_text;
/* The canonical form of the option and its argument, for when it is
necessary to reconstruct argv elements (in particular, for
processing specs and passing options to subprocesses from the
driver). */
const char *canonical_option[4];
/* The number of elements in the canonical form of the option and
arguments; always at least 1. */
size_t canonical_option_num_elements;
/* For a boolean option, 1 for the true case and 0 for the "no-"
case. For an unsigned integer option, the value of the
argument. For enum the value of the enumerator corresponding
to argument string. 1 in all other cases. */
HOST_WIDE_INT value;
/* For EnumSet the value mask. Variable should be changed to
value | (prev_value & ~mask). */
HOST_WIDE_INT mask;
/* Any flags describing errors detected in this option. */
int errors;
};
/* Structure describing an option deferred for handling after the main
option handlers. */
struct cl_deferred_option
{
/* Elements from struct cl_decoded_option used for deferred
options. */
size_t opt_index;
const char *arg;
int value;
};
/* Structure describing a single option-handling callback. */
struct cl_option_handler_func
{
/* The function called to handle the option. */
bool (*handler) (struct gcc_options *opts,
struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
unsigned int lang_mask, int kind, location_t loc,
const struct cl_option_handlers *handlers,
diagnostic_context *dc,
void (*target_option_override_hook) (void));
/* The mask that must have some bit in common with the flags for the
option for this particular handler to be used. */
unsigned int mask;
};
/* Structure describing the callbacks used in handling options. */
struct cl_option_handlers
{
/* Callback for an unknown option to determine whether to give an
error for it, and possibly store information to diagnose the
option at a later point. Return true if an error should be
given, false otherwise. */
bool (*unknown_option_callback) (const struct cl_decoded_option *decoded);
/* Callback to handle, and possibly diagnose, an option for another
language. */
void (*wrong_lang_callback) (const struct cl_decoded_option *decoded,
unsigned int lang_mask);
/* Target option override hook. */
void (*target_option_override_hook) (void);
/* The number of individual handlers. */
size_t num_handlers;
/* The handlers themselves. */
struct cl_option_handler_func handlers[3];
};
/* Hold command-line options associated with stack limitation. */
extern const char *opt_fstack_limit_symbol_arg;
extern int opt_fstack_limit_register_no;
extern bool flag_stack_protector_set_by_fhardened_p;
/* Input file names. */
extern const char **in_fnames;
/* The count of input filenames. */
extern unsigned num_in_fnames;
extern char *opts_concat (const char *first, ...);
/* Obstack for option strings. */
extern struct obstack opts_obstack;
size_t find_opt (const char *input, unsigned int lang_mask);
extern HOST_WIDE_INT integral_argument (const char *arg, int * = NULL, bool = false);
extern bool enum_value_to_arg (const struct cl_enum_arg *enum_args,
const char **argp, int value,
unsigned int lang_mask);
extern void decode_cmdline_options_to_array (unsigned int argc,
const char **argv,
unsigned int lang_mask,
struct cl_decoded_option **decoded_options,
unsigned int *decoded_options_count);
extern void init_options_once (void);
extern void init_options_struct (struct gcc_options *opts,
struct gcc_options *opts_set);
extern void init_opts_obstack (void);
extern void decode_cmdline_options_to_array_default_mask (unsigned int argc,
const char **argv,
struct cl_decoded_option **decoded_options,
unsigned int *decoded_options_count);
extern void set_default_handlers (struct cl_option_handlers *handlers,
void (*target_option_override_hook) (void));
extern void decode_options (struct gcc_options *opts,
struct gcc_options *opts_set,
struct cl_decoded_option *decoded_options,
unsigned int decoded_options_count,
location_t loc,
diagnostic_context *dc,
void (*target_option_override_hook) (void));
extern int option_enabled (int opt_idx, unsigned lang_mask, void *opts);
extern bool get_option_state (struct gcc_options *, int,
struct cl_option_state *);
extern void set_option (struct gcc_options *opts,
struct gcc_options *opts_set,
int opt_index, HOST_WIDE_INT value, const char *arg,
int kind, location_t loc, diagnostic_context *dc,
HOST_WIDE_INT = 0);
extern void *option_flag_var (int opt_index, struct gcc_options *opts);
bool handle_generated_option (struct gcc_options *opts,
struct gcc_options *opts_set,
size_t opt_index, const char *arg,
HOST_WIDE_INT value,
unsigned int lang_mask, int kind, location_t loc,
const struct cl_option_handlers *handlers,
bool generated_p, diagnostic_context *dc);
void generate_option (size_t opt_index, const char *arg, HOST_WIDE_INT value,
unsigned int lang_mask,
struct cl_decoded_option *decoded);
void generate_option_input_file (const char *file,
struct cl_decoded_option *decoded);
extern void read_cmdline_option (struct gcc_options *opts,
struct gcc_options *opts_set,
struct cl_decoded_option *decoded,
location_t loc,
unsigned int lang_mask,
const struct cl_option_handlers *handlers,
diagnostic_context *dc);
extern void control_warning_option (unsigned int opt_index, int kind,
const char *arg, bool imply, location_t loc,
unsigned int lang_mask,
const struct cl_option_handlers *handlers,
struct gcc_options *opts,
struct gcc_options *opts_set,
diagnostic_context *dc);
extern char *write_langs (unsigned int mask);
extern void print_ignored_options (void);
extern void handle_common_deferred_options (void);
extern void handle_deferred_dump_options (void);
unsigned int parse_sanitizer_options (const char *, location_t, int,
unsigned int, int, bool);
unsigned int parse_no_sanitize_attribute (char *value);
extern bool common_handle_option (struct gcc_options *opts,
struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
unsigned int lang_mask, int kind,
location_t loc,
const struct cl_option_handlers *handlers,
diagnostic_context *dc,
void (*target_option_override_hook) (void));
extern bool target_handle_option (struct gcc_options *opts,
struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
unsigned int lang_mask, int kind,
location_t loc,
const struct cl_option_handlers *handlers,
diagnostic_context *dc,
void (*target_option_override_hook) (void));
extern void finish_options (struct gcc_options *opts,
struct gcc_options *opts_set,
location_t loc);
extern void diagnose_options (gcc_options *opts, gcc_options *opts_set,
location_t loc);
extern void print_help (struct gcc_options *opts, unsigned int lang_mask, const
char *help_option_argument);
extern void default_options_optimization (struct gcc_options *opts,
struct gcc_options *opts_set,
struct cl_decoded_option *decoded_options,
unsigned int decoded_options_count,
location_t loc,
unsigned int lang_mask,
const struct cl_option_handlers *handlers,
diagnostic_context *dc);
extern void set_struct_debug_option (struct gcc_options *opts,
location_t loc,
const char *value);
extern bool opt_enum_arg_to_value (size_t opt_index, const char *arg,
int *value,
unsigned int lang_mask);
extern const struct sanitizer_opts_s
{
const char *const name;
unsigned int flag;
size_t len;
bool can_recover;
bool can_trap;
} sanitizer_opts[];
extern const struct zero_call_used_regs_opts_s
{
const char *const name;
unsigned int flag;
} zero_call_used_regs_opts[];
extern vec<const char *> help_option_arguments;
extern void add_misspelling_candidates (auto_vec<char *> *candidates,
const struct cl_option *option,
const char *base_option);
extern const char *candidates_list_and_hint (const char *arg, char *&str,
const auto_vec <const char *> &
candidates);
extern bool parse_and_check_align_values (const char *flag,
const char *name,
auto_vec<unsigned> &result_values,
bool report_error,
location_t loc);
extern void parse_and_check_patch_area (const char *arg, bool report_error,
HOST_WIDE_INT *patch_area_size,
HOST_WIDE_INT *patch_area_start);
extern void parse_options_from_collect_gcc_options (const char *, obstack *,
int *);
extern void prepend_xassembler_to_collect_as_options (const char *, obstack *);
extern char *gen_command_line_string (cl_decoded_option *options,
unsigned int options_count);
extern char *gen_producer_string (const char *language_string,
cl_decoded_option *options,
unsigned int options_count);
/* Set OPTION in OPTS to VALUE if the option is not set in OPTS_SET. */
#define SET_OPTION_IF_UNSET(OPTS, OPTS_SET, OPTION, VALUE) \
do \
{ \
if (!(OPTS_SET)->x_ ## OPTION) \
(OPTS)->x_ ## OPTION = VALUE; \
} \
while (false)
/* Return true if OPTION is set by user in global options. */
#define OPTION_SET_P(OPTION) global_options_set.x_ ## OPTION
/* Find all the switches given to us
and make a vector describing them.
The elements of the vector are strings, one per switch given.
If a switch uses following arguments, then the `part1' field
is the switch itself and the `args' field
is a null-terminated vector containing the following arguments.
Bits in the `live_cond' field are:
SWITCH_LIVE to indicate this switch is true in a conditional spec.
SWITCH_FALSE to indicate this switch is overridden by a later switch.
SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
should be included in COLLECT_GCC_OPTIONS.
in all do_spec calls afterwards. Used for %<S from self specs.
The `known' field describes whether this is an internal switch.
The `validated' field describes whether any spec has looked at this switch;
if it remains false at the end of the run, the switch must be meaningless.
The `ordering' field is used to temporarily mark switches that have to be
kept in a specific order. */
#define SWITCH_LIVE (1 << 0)
#define SWITCH_FALSE (1 << 1)
#define SWITCH_IGNORE (1 << 2)
#define SWITCH_IGNORE_PERMANENTLY (1 << 3)
#define SWITCH_KEEP_FOR_GCC (1 << 4)
struct switchstr
{
const char *part1;
const char **args;
unsigned int live_cond;
bool known;
bool validated;
bool ordering;
};
#endif
|