OpenCores
URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [options.h] - Blame information for rev 53

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

Line No. Rev Author Line
1 27 khays
// options.h -- handle command line options for gold  -*- C++ -*-
2
 
3
// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4
// Written by Ian Lance Taylor <iant@google.com>.
5
 
6
// This file is part of gold.
7
 
8
// This program is free software; you can redistribute it and/or modify
9
// it under the terms of the GNU General Public License as published by
10
// the Free Software Foundation; either version 3 of the License, or
11
// (at your option) any later version.
12
 
13
// This program is distributed in the hope that it will be useful,
14
// but WITHOUT ANY WARRANTY; without even the implied warranty of
15
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
// GNU General Public License for more details.
17
 
18
// You should have received a copy of the GNU General Public License
19
// along with this program; if not, write to the Free Software
20
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21
// MA 02110-1301, USA.
22
 
23
// General_options (from Command_line::options())
24
//   All the options (a.k.a. command-line flags)
25
// Input_argument (from Command_line::inputs())
26
//   The list of input files, including -l options.
27
// Command_line
28
//   Everything we get from the command line -- the General_options
29
//   plus the Input_arguments.
30
//
31
// There are also some smaller classes, such as
32
// Position_dependent_options which hold a subset of General_options
33
// that change as options are parsed (as opposed to the usual behavior
34
// of the last instance of that option specified on the commandline wins).
35
 
36
#ifndef GOLD_OPTIONS_H
37
#define GOLD_OPTIONS_H
38
 
39
#include <cstdlib>
40
#include <cstring>
41
#include <list>
42
#include <map>
43
#include <string>
44
#include <vector>
45
 
46
#include "elfcpp.h"
47
#include "script.h"
48
 
49
namespace gold
50
{
51
 
52
class Command_line;
53
class General_options;
54
class Search_directory;
55
class Input_file_group;
56
class Input_file_lib;
57
class Position_dependent_options;
58
class Target;
59
class Plugin_manager;
60
class Script_info;
61
 
62
// Incremental build action for a specific file, as selected by the user.
63
 
64
enum Incremental_disposition
65
{
66
  // Determine the status from the timestamp (default).
67
  INCREMENTAL_CHECK,
68
  // Assume the file changed from the previous build.
69
  INCREMENTAL_CHANGED,
70
  // Assume the file didn't change from the previous build.
71
  INCREMENTAL_UNCHANGED
72
};
73
 
74
// The nested namespace is to contain all the global variables and
75
// structs that need to be defined in the .h file, but do not need to
76
// be used outside this class.
77
namespace options
78
{
79
typedef std::vector<Search_directory> Dir_list;
80
typedef Unordered_set<std::string> String_set;
81
 
82
// These routines convert from a string option to various types.
83
// Each gives a fatal error if it cannot parse the argument.
84
 
85
extern void
86
parse_bool(const char* option_name, const char* arg, bool* retval);
87
 
88
extern void
89
parse_int(const char* option_name, const char* arg, int* retval);
90
 
91
extern void
92
parse_uint(const char* option_name, const char* arg, int* retval);
93
 
94
extern void
95
parse_uint64(const char* option_name, const char* arg, uint64_t* retval);
96
 
97
extern void
98
parse_double(const char* option_name, const char* arg, double* retval);
99
 
100
extern void
101
parse_string(const char* option_name, const char* arg, const char** retval);
102
 
103
extern void
104
parse_optional_string(const char* option_name, const char* arg,
105
                      const char** retval);
106
 
107
extern void
108
parse_dirlist(const char* option_name, const char* arg, Dir_list* retval);
109
 
110
extern void
111
parse_set(const char* option_name, const char* arg, String_set* retval);
112
 
113
extern void
114
parse_choices(const char* option_name, const char* arg, const char** retval,
115
              const char* choices[], int num_choices);
116
 
117
struct Struct_var;
118
 
119
// Most options have both a shortname (one letter) and a longname.
120
// This enum controls how many dashes are expected for longname access
121
// -- shortnames always use one dash.  Most longnames will accept
122
// either one dash or two; the only difference between ONE_DASH and
123
// TWO_DASHES is how we print the option in --help.  However, some
124
// longnames require two dashes, and some require only one.  The
125
// special value DASH_Z means that the option is preceded by "-z".
126
enum Dashes
127
{
128
  ONE_DASH, TWO_DASHES, EXACTLY_ONE_DASH, EXACTLY_TWO_DASHES, DASH_Z
129
};
130
 
131
// LONGNAME is the long-name of the option with dashes converted to
132
//    underscores, or else the short-name if the option has no long-name.
133
//    It is never the empty string.
134
// DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc.
135
// SHORTNAME is the short-name of the option, as a char, or '\0' if the
136
//    option has no short-name.  If the option has no long-name, you
137
//    should specify the short-name in *both* VARNAME and here.
138
// DEFAULT_VALUE is the value of the option if not specified on the
139
//    commandline, as a string.
140
// HELPSTRING is the descriptive text used with the option via --help
141
// HELPARG is how you define the argument to the option.
142
//    --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING"
143
//    HELPARG should be NULL iff the option is a bool and takes no arg.
144
// OPTIONAL_ARG is true if this option takes an optional argument.  An
145
//    optional argument must be specifid as --OPTION=VALUE, not
146
//    --OPTION VALUE.
147
// READER provides parse_to_value, which is a function that will convert
148
//    a char* argument into the proper type and store it in some variable.
149
// A One_option struct initializes itself with the global list of options
150
// at constructor time, so be careful making one of these.
151
struct One_option
152
{
153
  std::string longname;
154
  Dashes dashes;
155
  char shortname;
156
  const char* default_value;
157
  const char* helpstring;
158
  const char* helparg;
159
  bool optional_arg;
160
  Struct_var* reader;
161
 
162
  One_option(const char* ln, Dashes d, char sn, const char* dv,
163
             const char* hs, const char* ha, bool oa, Struct_var* r)
164
    : longname(ln), dashes(d), shortname(sn), default_value(dv ? dv : ""),
165
      helpstring(hs), helparg(ha), optional_arg(oa), reader(r)
166
  {
167
    // In longname, we convert all underscores to dashes, since GNU
168
    // style uses dashes in option names.  longname is likely to have
169
    // underscores in it because it's also used to declare a C++
170
    // function.
171
    const char* pos = strchr(this->longname.c_str(), '_');
172
    for (; pos; pos = strchr(pos, '_'))
173
      this->longname[pos - this->longname.c_str()] = '-';
174
 
175
    // We only register ourselves if our helpstring is not NULL.  This
176
    // is to support the "no-VAR" boolean variables, which we
177
    // conditionally turn on by defining "no-VAR" help text.
178
    if (this->helpstring)
179
      this->register_option();
180
  }
181
 
182
  // This option takes an argument iff helparg is not NULL.
183
  bool
184
  takes_argument() const
185
  { return this->helparg != NULL; }
186
 
187
  // Whether the argument is optional.
188
  bool
189
  takes_optional_argument() const
190
  { return this->optional_arg; }
191
 
192
  // Register this option with the global list of options.
193
  void
194
  register_option();
195
 
196
  // Print this option to stdout (used with --help).
197
  void
198
  print() const;
199
};
200
 
201
// All options have a Struct_##varname that inherits from this and
202
// actually implements parse_to_value for that option.
203
struct Struct_var
204
{
205
  // OPTION: the name of the option as specified on the commandline,
206
  //    including leading dashes, and any text following the option:
207
  //    "-O", "--defsym=mysym=0x1000", etc.
208
  // ARG: the arg associated with this option, or NULL if the option
209
  //    takes no argument: "2", "mysym=0x1000", etc.
210
  // CMDLINE: the global Command_line object.  Used by DEFINE_special.
211
  // OPTIONS: the global General_options object.  Used by DEFINE_special.
212
  virtual void
213
  parse_to_value(const char* option, const char* arg,
214
                 Command_line* cmdline, General_options* options) = 0;
215
  virtual
216
  ~Struct_var()  // To make gcc happy.
217
  { }
218
};
219
 
220
// This is for "special" options that aren't of any predefined type.
221
struct Struct_special : public Struct_var
222
{
223
  // If you change this, change the parse-fn in DEFINE_special as well.
224
  typedef void (General_options::*Parse_function)(const char*, const char*,
225
                                                  Command_line*);
226
  Struct_special(const char* varname, Dashes dashes, char shortname,
227
                 Parse_function parse_function,
228
                 const char* helpstring, const char* helparg)
229
    : option(varname, dashes, shortname, "", helpstring, helparg, false, this),
230
      parse(parse_function)
231
  { }
232
 
233
  void parse_to_value(const char* option, const char* arg,
234
                      Command_line* cmdline, General_options* options)
235
  { (options->*(this->parse))(option, arg, cmdline); }
236
 
237
  One_option option;
238
  Parse_function parse;
239
};
240
 
241
}  // End namespace options.
242
 
243
 
244
// These are helper macros use by DEFINE_uint64/etc below.
245
// This macro is used inside the General_options_ class, so defines
246
// var() and set_var() as General_options methods.  Arguments as are
247
// for the constructor for One_option.  param_type__ is the same as
248
// type__ for built-in types, and "const type__ &" otherwise.
249
//
250
// When we define the linker command option "assert", the macro argument
251
// varname__ of DEFINE_var below will be replaced by "assert".  On Mac OSX
252
// assert.h is included implicitly by one of the library headers we use.  To
253
// avoid unintended macro substitution of "assert()", we need to enclose
254
// varname__ with parenthese.
255
#define DEFINE_var(varname__, dashes__, shortname__, default_value__,        \
256
                   default_value_as_string__, helpstring__, helparg__,       \
257
                   optional_arg__, type__, param_type__, parse_fn__)         \
258
 public:                                                                     \
259
  param_type__                                                               \
260
  (varname__)() const                                                        \
261
  { return this->varname__##_.value; }                                       \
262
                                                                             \
263
  bool                                                                       \
264
  user_set_##varname__() const                                               \
265
  { return this->varname__##_.user_set_via_option; }                         \
266
                                                                             \
267
  void                                                                       \
268
  set_user_set_##varname__()                                                 \
269
  { this->varname__##_.user_set_via_option = true; }                         \
270
                                                                             \
271
 private:                                                                    \
272
  struct Struct_##varname__ : public options::Struct_var                     \
273
  {                                                                          \
274
    Struct_##varname__()                                                     \
275
      : option(#varname__, dashes__, shortname__, default_value_as_string__, \
276
               helpstring__, helparg__, optional_arg__, this),               \
277
        user_set_via_option(false), value(default_value__)                   \
278
    { }                                                                      \
279
                                                                             \
280
    void                                                                     \
281
    parse_to_value(const char* option_name, const char* arg,                 \
282
                   Command_line*, General_options*)                          \
283
    {                                                                        \
284
      parse_fn__(option_name, arg, &this->value);                            \
285
      this->user_set_via_option = true;                                      \
286
    }                                                                        \
287
                                                                             \
288
    options::One_option option;                                              \
289
    bool user_set_via_option;                                                \
290
    type__ value;                                                            \
291
  };                                                                         \
292
  Struct_##varname__ varname__##_;                                           \
293
  void                                                                       \
294
  set_##varname__(param_type__ value)                                        \
295
  { this->varname__##_.value = value; }
296
 
297
// These macros allow for easy addition of a new commandline option.
298
 
299
// If no_helpstring__ is not NULL, then in addition to creating
300
// VARNAME, we also create an option called no-VARNAME (or, for a -z
301
// option, noVARNAME).
302
#define DEFINE_bool(varname__, dashes__, shortname__, default_value__,   \
303
                    helpstring__, no_helpstring__)                       \
304
  DEFINE_var(varname__, dashes__, shortname__, default_value__,          \
305
             default_value__ ? "true" : "false", helpstring__, NULL,     \
306
             false, bool, bool, options::parse_bool)                     \
307
  struct Struct_no_##varname__ : public options::Struct_var              \
308
  {                                                                      \
309
    Struct_no_##varname__() : option((dashes__ == options::DASH_Z        \
310
                                      ? "no" #varname__                  \
311
                                      : "no-" #varname__),               \
312
                                     dashes__, '\0',                     \
313
                                     default_value__ ? "false" : "true", \
314
                                     no_helpstring__, NULL, false, this) \
315
    { }                                                                  \
316
                                                                         \
317
    void                                                                 \
318
    parse_to_value(const char*, const char*,                             \
319
                   Command_line*, General_options* options)              \
320
    {                                                                    \
321
      options->set_##varname__(false);                                   \
322
      options->set_user_set_##varname__();                               \
323
    }                                                                    \
324
                                                                         \
325
    options::One_option option;                                          \
326
  };                                                                     \
327
  Struct_no_##varname__ no_##varname__##_initializer_
328
 
329
#define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \
330
                      helpstring__, no_helpstring__)                     \
331
  DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \
332
             default_value__ ? "true" : "false", helpstring__, NULL,     \
333
             false, bool, bool, options::parse_bool)                     \
334
  struct Struct_disable_##varname__ : public options::Struct_var         \
335
  {                                                                      \
336
    Struct_disable_##varname__() : option("disable-" #varname__,         \
337
                                     dashes__, '\0',                     \
338
                                     default_value__ ? "false" : "true", \
339
                                     no_helpstring__, NULL, false, this) \
340
    { }                                                                  \
341
                                                                         \
342
    void                                                                 \
343
    parse_to_value(const char*, const char*,                             \
344
                   Command_line*, General_options* options)              \
345
    { options->set_enable_##varname__(false); }                          \
346
                                                                         \
347
    options::One_option option;                                          \
348
  };                                                                     \
349
  Struct_disable_##varname__ disable_##varname__##_initializer_
350
 
351
#define DEFINE_int(varname__, dashes__, shortname__, default_value__,   \
352
                   helpstring__, helparg__)                             \
353
  DEFINE_var(varname__, dashes__, shortname__, default_value__,         \
354
             #default_value__, helpstring__, helparg__, false,          \
355
             int, int, options::parse_int)
356
 
357
#define DEFINE_uint(varname__, dashes__, shortname__, default_value__,  \
358
                   helpstring__, helparg__)                             \
359
  DEFINE_var(varname__, dashes__, shortname__, default_value__,         \
360
             #default_value__, helpstring__, helparg__, false,          \
361
             int, int, options::parse_uint)
362
 
363
#define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \
364
                      helpstring__, helparg__)                           \
365
  DEFINE_var(varname__, dashes__, shortname__, default_value__,          \
366
             #default_value__, helpstring__, helparg__, false,           \
367
             uint64_t, uint64_t, options::parse_uint64)
368
 
369
#define DEFINE_double(varname__, dashes__, shortname__, default_value__, \
370
                      helpstring__, helparg__)                           \
371
  DEFINE_var(varname__, dashes__, shortname__, default_value__,          \
372
             #default_value__, helpstring__, helparg__, false,           \
373
             double, double, options::parse_double)
374
 
375
#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
376
                      helpstring__, helparg__)                           \
377
  DEFINE_var(varname__, dashes__, shortname__, default_value__,          \
378
             default_value__, helpstring__, helparg__, false,            \
379
             const char*, const char*, options::parse_string)
380
 
381
// This is like DEFINE_string, but we convert each occurrence to a
382
// Search_directory and store it in a vector.  Thus we also have the
383
// add_to_VARNAME() method, to append to the vector.
384
#define DEFINE_dirlist(varname__, dashes__, shortname__,                  \
385
                           helpstring__, helparg__)                       \
386
  DEFINE_var(varname__, dashes__, shortname__, ,                          \
387
             "", helpstring__, helparg__, false, options::Dir_list,       \
388
             const options::Dir_list&, options::parse_dirlist)            \
389
  void                                                                    \
390
  add_to_##varname__(const char* new_value)                               \
391
  { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \
392
  void                                                                    \
393
  add_search_directory_to_##varname__(const Search_directory& dir)        \
394
  { this->varname__##_.value.push_back(dir); }
395
 
396
// This is like DEFINE_string, but we store a set of strings.
397
#define DEFINE_set(varname__, dashes__, shortname__,                      \
398
                   helpstring__, helparg__)                               \
399
  DEFINE_var(varname__, dashes__, shortname__, ,                          \
400
             "", helpstring__, helparg__, false, options::String_set,     \
401
             const options::String_set&, options::parse_set)              \
402
 public:                                                                  \
403
  bool                                                                    \
404
  any_##varname__() const                                                 \
405
  { return !this->varname__##_.value.empty(); }                           \
406
                                                                          \
407
  bool                                                                    \
408
  is_##varname__(const char* symbol) const                                \
409
  {                                                                       \
410
    return (!this->varname__##_.value.empty()                             \
411
            && (this->varname__##_.value.find(std::string(symbol))        \
412
                != this->varname__##_.value.end()));                      \
413
  }                                                                       \
414
                                                                          \
415
  options::String_set::const_iterator                                     \
416
  varname__##_begin() const                                               \
417
  { return this->varname__##_.value.begin(); }                            \
418
                                                                          \
419
  options::String_set::const_iterator                                     \
420
  varname__##_end() const                                                 \
421
  { return this->varname__##_.value.end(); }
422
 
423
// When you have a list of possible values (expressed as string)
424
// After helparg__ should come an initializer list, like
425
//   {"foo", "bar", "baz"}
426
#define DEFINE_enum(varname__, dashes__, shortname__, default_value__,   \
427
                    helpstring__, helparg__, ...)                        \
428
  DEFINE_var(varname__, dashes__, shortname__, default_value__,          \
429
             default_value__, helpstring__, helparg__, false,            \
430
             const char*, const char*, parse_choices_##varname__)        \
431
 private:                                                                \
432
  static void parse_choices_##varname__(const char* option_name,         \
433
                                        const char* arg,                 \
434
                                        const char** retval) {           \
435
    const char* choices[] = __VA_ARGS__;                                 \
436
    options::parse_choices(option_name, arg, retval,                     \
437
                           choices, sizeof(choices) / sizeof(*choices)); \
438
  }
439
 
440
// This is like DEFINE_bool, but VARNAME is the name of a different
441
// option.  This option becomes an alias for that one.  INVERT is true
442
// if this option is an inversion of the other one.
443
#define DEFINE_bool_alias(option__, varname__, dashes__, shortname__,   \
444
                          helpstring__, no_helpstring__, invert__)      \
445
 private:                                                               \
446
  struct Struct_##option__ : public options::Struct_var                 \
447
  {                                                                     \
448
    Struct_##option__()                                                 \
449
      : option(#option__, dashes__, shortname__, "", helpstring__,      \
450
               NULL, false, this)                                       \
451
    { }                                                                 \
452
                                                                        \
453
    void                                                                \
454
    parse_to_value(const char*, const char*,                            \
455
                   Command_line*, General_options* options)             \
456
    {                                                                   \
457
      options->set_##varname__(!invert__);                              \
458
      options->set_user_set_##varname__();                              \
459
    }                                                                   \
460
                                                                        \
461
    options::One_option option;                                         \
462
  };                                                                    \
463
  Struct_##option__ option__##_;                                        \
464
                                                                        \
465
  struct Struct_no_##option__ : public options::Struct_var              \
466
  {                                                                     \
467
    Struct_no_##option__()                                              \
468
      : option((dashes__ == options::DASH_Z                             \
469
                ? "no" #option__                                        \
470
                : "no-" #option__),                                     \
471
               dashes__, '\0', "", no_helpstring__,                     \
472
               NULL, false, this)                                       \
473
    { }                                                                 \
474
                                                                        \
475
    void                                                                \
476
    parse_to_value(const char*, const char*,                            \
477
                   Command_line*, General_options* options)             \
478
    {                                                                   \
479
      options->set_##varname__(invert__);                               \
480
      options->set_user_set_##varname__();                              \
481
    }                                                                   \
482
                                                                        \
483
    options::One_option option;                                         \
484
  };                                                                    \
485
  Struct_no_##option__ no_##option__##_initializer_
486
 
487
// This is used for non-standard flags.  It defines no functions; it
488
// just calls General_options::parse_VARNAME whenever the flag is
489
// seen.  We declare parse_VARNAME as a static member of
490
// General_options; you are responsible for defining it there.
491
// helparg__ should be NULL iff this special-option is a boolean.
492
#define DEFINE_special(varname__, dashes__, shortname__,                \
493
                       helpstring__, helparg__)                         \
494
 private:                                                               \
495
  void parse_##varname__(const char* option, const char* arg,           \
496
                         Command_line* inputs);                         \
497
  struct Struct_##varname__ : public options::Struct_special            \
498
  {                                                                     \
499
    Struct_##varname__()                                                \
500
      : options::Struct_special(#varname__, dashes__, shortname__,      \
501
                                &General_options::parse_##varname__,    \
502
                                helpstring__, helparg__)                \
503
    { }                                                                 \
504
  };                                                                    \
505
  Struct_##varname__ varname__##_initializer_
506
 
507
// An option that takes an optional string argument.  If the option is
508
// used with no argument, the value will be the default, and
509
// user_set_via_option will be true.
510
#define DEFINE_optional_string(varname__, dashes__, shortname__,        \
511
                               default_value__,                         \
512
                               helpstring__, helparg__)                 \
513
  DEFINE_var(varname__, dashes__, shortname__, default_value__,         \
514
             default_value__, helpstring__, helparg__, true,            \
515
             const char*, const char*, options::parse_optional_string)
516
 
517
// A directory to search.  For each directory we record whether it is
518
// in the sysroot.  We need to know this so that, if a linker script
519
// is found within the sysroot, we will apply the sysroot to any files
520
// named by that script.
521
 
522
class Search_directory
523
{
524
 public:
525
  // We need a default constructor because we put this in a
526
  // std::vector.
527
  Search_directory()
528
    : name_(NULL), put_in_sysroot_(false), is_in_sysroot_(false)
529
  { }
530
 
531
  // This is the usual constructor.
532
  Search_directory(const char* name, bool put_in_sysroot)
533
    : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false)
534
  {
535
    if (this->name_.empty())
536
      this->name_ = ".";
537
  }
538
 
539
  // This is called if we have a sysroot.  The sysroot is prefixed to
540
  // any entries for which put_in_sysroot_ is true.  is_in_sysroot_ is
541
  // set to true for any enries which are in the sysroot (this will
542
  // naturally include any entries for which put_in_sysroot_ is true).
543
  // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of
544
  // passing SYSROOT to lrealpath.
545
  void
546
  add_sysroot(const char* sysroot, const char* canonical_sysroot);
547
 
548
  // Get the directory name.
549
  const std::string&
550
  name() const
551
  { return this->name_; }
552
 
553
  // Return whether this directory is in the sysroot.
554
  bool
555
  is_in_sysroot() const
556
  { return this->is_in_sysroot_; }
557
 
558
  // Return whether this is considered a system directory.
559
  bool
560
  is_system_directory() const
561
  { return this->put_in_sysroot_ || this->is_in_sysroot_; }
562
 
563
 private:
564
  // The directory name.
565
  std::string name_;
566
  // True if the sysroot should be added as a prefix for this
567
  // directory (if there is a sysroot).  This is true for system
568
  // directories that we search by default.
569
  bool put_in_sysroot_;
570
  // True if this directory is in the sysroot (if there is a sysroot).
571
  // This is true if there is a sysroot and either 1) put_in_sysroot_
572
  // is true, or 2) the directory happens to be in the sysroot based
573
  // on a pathname comparison.
574
  bool is_in_sysroot_;
575
};
576
 
577
class General_options
578
{
579
 private:
580
  // NOTE: For every option that you add here, also consider if you
581
  // should add it to Position_dependent_options.
582
  DEFINE_special(help, options::TWO_DASHES, '\0',
583
                 N_("Report usage information"), NULL);
584
  DEFINE_special(version, options::TWO_DASHES, 'v',
585
                 N_("Report version information"), NULL);
586
  DEFINE_special(V, options::EXACTLY_ONE_DASH, '\0',
587
                 N_("Report version and target information"), NULL);
588
 
589
  // These options are sorted approximately so that for each letter in
590
  // the alphabet, we show the option whose shortname is that letter
591
  // (if any) and then every longname that starts with that letter (in
592
  // alphabetical order).  For both, lowercase sorts before uppercase.
593
  // The -z options come last.
594
 
595
  DEFINE_bool(add_needed, options::TWO_DASHES, '\0', false,
596
              N_("Not supported"),
597
              N_("Do not copy DT_NEEDED tags from shared libraries"));
598
 
599
  DEFINE_bool_alias(allow_multiple_definition, muldefs, options::TWO_DASHES,
600
                    '\0', N_("Allow multiple definitions of symbols"),
601
                    N_("Do not allow multiple definitions"), false);
602
 
603
  DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false,
604
              N_("Allow unresolved references in shared libraries"),
605
              N_("Do not allow unresolved references in shared libraries"));
606
 
607
  DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false,
608
              N_("Only set DT_NEEDED for shared libraries if used"),
609
              N_("Always DT_NEEDED for shared libraries"));
610
 
611
  DEFINE_enum(assert, options::ONE_DASH, '\0', NULL,
612
              N_("Ignored"), N_("[ignored]"),
613
              {"definitions", "nodefinitions", "nosymbolic", "pure-text"});
614
 
615
  // This should really be an "enum", but it's too easy for folks to
616
  // forget to update the list as they add new targets.  So we just
617
  // accept any string.  We'll fail later (when the string is parsed),
618
  // if the target isn't actually supported.
619
  DEFINE_string(format, options::TWO_DASHES, 'b', "elf",
620
                N_("Set input format"), ("[elf,binary]"));
621
 
622
  DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true,
623
              N_("-l searches for shared libraries"), NULL);
624
  DEFINE_bool_alias(Bstatic, Bdynamic, options::ONE_DASH, '\0',
625
                    N_("-l does not search for shared libraries"), NULL,
626
                    true);
627
  DEFINE_bool_alias(dy, Bdynamic, options::ONE_DASH, '\0',
628
                    N_("alias for -Bdynamic"), NULL, false);
629
  DEFINE_bool_alias(dn, Bdynamic, options::ONE_DASH, '\0',
630
                    N_("alias for -Bstatic"), NULL, true);
631
 
632
  DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false,
633
              N_("Bind defined symbols locally"), NULL);
634
 
635
  DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false,
636
              N_("Bind defined function symbols locally"), NULL);
637
 
638
  DEFINE_optional_string(build_id, options::TWO_DASHES, '\0', "sha1",
639
                         N_("Generate build ID note"),
640
                         N_("[=STYLE]"));
641
 
642
  DEFINE_bool(check_sections, options::TWO_DASHES, '\0', true,
643
              N_("Check segment addresses for overlaps (default)"),
644
              N_("Do not check segment addresses for overlaps"));
645
 
646
#ifdef HAVE_ZLIB_H
647
  DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
648
              N_("Compress .debug_* sections in the output file"),
649
              ("[none,zlib]"),
650
              {"none", "zlib"});
651
#else
652
  DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
653
              N_("Compress .debug_* sections in the output file"),
654
              N_("[none]"),
655
              {"none"});
656
#endif
657
 
658
  DEFINE_bool(copy_dt_needed_entries, options::TWO_DASHES, '\0', false,
659
              N_("Not supported"),
660
              N_("Do not copy DT_NEEDED tags from shared libraries"));
661
 
662
  DEFINE_bool(cref, options::TWO_DASHES, '\0', false,
663
              N_("Output cross reference table"),
664
              N_("Do not output cross reference table"));
665
 
666
  DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
667
              N_("Define common symbols"),
668
              N_("Do not define common symbols"));
669
  DEFINE_bool(dc, options::ONE_DASH, '\0', false,
670
              N_("Alias for -d"), NULL);
671
  DEFINE_bool(dp, options::ONE_DASH, '\0', false,
672
              N_("Alias for -d"), NULL);
673
 
674
  DEFINE_string(debug, options::TWO_DASHES, '\0', "",
675
                N_("Turn on debugging"),
676
                N_("[all,files,script,task][,...]"));
677
 
678
  DEFINE_special(defsym, options::TWO_DASHES, '\0',
679
                 N_("Define a symbol"), N_("SYMBOL=EXPRESSION"));
680
 
681
  DEFINE_optional_string(demangle, options::TWO_DASHES, '\0', NULL,
682
                         N_("Demangle C++ symbols in log messages"),
683
                         N_("[=STYLE]"));
684
 
685
  DEFINE_bool(no_demangle, options::TWO_DASHES, '\0', false,
686
              N_("Do not demangle C++ symbols in log messages"),
687
              NULL);
688
 
689
  DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false,
690
              N_("Look for violations of the C++ One Definition Rule"),
691
              N_("Do not look for violations of the C++ One Definition Rule"));
692
 
693
  DEFINE_bool(discard_all, options::TWO_DASHES, 'x', false,
694
              N_("Delete all local symbols"), NULL);
695
  DEFINE_bool(discard_locals, options::TWO_DASHES, 'X', false,
696
              N_("Delete all temporary local symbols"), NULL);
697
 
698
  DEFINE_bool(dynamic_list_data, options::TWO_DASHES, '\0', false,
699
              N_("Add data symbols to dynamic symbols"), NULL);
700
 
701
  DEFINE_bool(dynamic_list_cpp_new, options::TWO_DASHES, '\0', false,
702
              N_("Add C++ operator new/delete to dynamic symbols"), NULL);
703
 
704
  DEFINE_bool(dynamic_list_cpp_typeinfo, options::TWO_DASHES, '\0', false,
705
              N_("Add C++ typeinfo to dynamic symbols"), NULL);
706
 
707
  DEFINE_special(dynamic_list, options::TWO_DASHES, '\0',
708
                 N_("Read a list of dynamic symbols"), N_("FILE"));
709
 
710
  DEFINE_string(entry, options::TWO_DASHES, 'e', NULL,
711
                N_("Set program start address"), N_("ADDRESS"));
712
 
713
  DEFINE_special(exclude_libs, options::TWO_DASHES, '\0',
714
                 N_("Exclude libraries from automatic export"),
715
                 N_(("lib,lib ...")));
716
 
717
  DEFINE_bool(export_dynamic, options::TWO_DASHES, 'E', false,
718
              N_("Export all dynamic symbols"),
719
              N_("Do not export all dynamic symbols (default)"));
720
 
721
  DEFINE_special(EB, options::ONE_DASH, '\0',
722
                 N_("Link big-endian objects."), NULL);
723
 
724
  DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
725
              N_("Create exception frame header"), NULL);
726
 
727
  DEFINE_special(EL, options::ONE_DASH, '\0',
728
                 N_("Link little-endian objects."), NULL);
729
 
730
  DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL,
731
              N_("(ARM only) Do not warn about objects with incompatible "
732
                 "enum sizes"));
733
 
734
  DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
735
              N_("Treat warnings as errors"),
736
              N_("Do not treat warnings as errors"));
737
 
738
  DEFINE_string(fini, options::ONE_DASH, '\0', "_fini",
739
                N_("Call SYMBOL at unload-time"), N_("SYMBOL"));
740
 
741
  DEFINE_bool(fix_cortex_a8, options::TWO_DASHES, '\0', false,
742
              N_("(ARM only) Fix binaries for Cortex-A8 erratum."),
743
              N_("(ARM only) Do not fix binaries for Cortex-A8 erratum."));
744
 
745
  DEFINE_bool(merge_exidx_entries, options::TWO_DASHES, '\0', true,
746
              N_("(ARM only) Merge exidx entries in debuginfo."),
747
              N_("(ARM only) Do not merge exidx entries in debuginfo."));
748
 
749
  DEFINE_special(fix_v4bx, options::TWO_DASHES, '\0',
750
                 N_("(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4"),
751
                 NULL);
752
 
753
  DEFINE_special(fix_v4bx_interworking, options::TWO_DASHES, '\0',
754
                 N_("(ARM only) Rewrite BX rn branch to ARMv4 interworking "
755
                    "veneer"),
756
                 NULL);
757
 
758
  DEFINE_bool(g, options::EXACTLY_ONE_DASH, '\0', false,
759
              N_("Ignored"), NULL);
760
 
761
  DEFINE_string(soname, options::ONE_DASH, 'h', NULL,
762
                N_("Set shared library name"), N_("FILENAME"));
763
 
764
  DEFINE_double(hash_bucket_empty_fraction, options::TWO_DASHES, '\0', 0.0,
765
                N_("Min fraction of empty buckets in dynamic hash"),
766
                N_("FRACTION"));
767
 
768
  DEFINE_enum(hash_style, options::TWO_DASHES, '\0', "sysv",
769
              N_("Dynamic hash style"), N_("[sysv,gnu,both]"),
770
              {"sysv", "gnu", "both"});
771
 
772
  DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL,
773
                N_("Set dynamic linker path"), N_("PROGRAM"));
774
 
775
  DEFINE_special(incremental, options::TWO_DASHES, '\0',
776
                 N_("Do an incremental link if possible; "
777
                    "otherwise, do a full link and prepare output "
778
                    "for incremental linking"), NULL);
779
 
780
  DEFINE_special(no_incremental, options::TWO_DASHES, '\0',
781
                 N_("Do a full link (default)"), NULL);
782
 
783
  DEFINE_special(incremental_full, options::TWO_DASHES, '\0',
784
                 N_("Do a full link and "
785
                    "prepare output for incremental linking"), NULL);
786
 
787
  DEFINE_special(incremental_update, options::TWO_DASHES, '\0',
788
                 N_("Do an incremental link; exit if not possible"), NULL);
789
 
790
  DEFINE_string(incremental_base, options::TWO_DASHES, '\0', NULL,
791
                N_("Set base file for incremental linking"
792
                   " (default is output file)"),
793
                N_("FILE"));
794
 
795
  DEFINE_special(incremental_changed, options::TWO_DASHES, '\0',
796
                 N_("Assume files changed"), NULL);
797
 
798
  DEFINE_special(incremental_unchanged, options::TWO_DASHES, '\0',
799
                 N_("Assume files didn't change"), NULL);
800
 
801
  DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0',
802
                 N_("Use timestamps to check files (default)"), NULL);
803
 
804
  DEFINE_string(init, options::ONE_DASH, '\0', "_init",
805
                N_("Call SYMBOL at load-time"), N_("SYMBOL"));
806
 
807
  DEFINE_special(just_symbols, options::TWO_DASHES, '\0',
808
                 N_("Read only symbol values from FILE"), N_("FILE"));
809
 
810
  DEFINE_bool(map_whole_files, options::TWO_DASHES, '\0',
811
              sizeof(void*) >= 8,
812
              N_("Map whole files to memory (default on 64-bit hosts)"),
813
              N_("Map relevant file parts to memory (default on 32-bit "
814
                 "hosts)"));
815
  DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true,
816
              N_("Keep files mapped across passes (default)"),
817
              N_("Release mapped files after each pass"));
818
 
819
  DEFINE_special(library, options::TWO_DASHES, 'l',
820
                 N_("Search for library LIBNAME"), N_("LIBNAME"));
821
 
822
  DEFINE_dirlist(library_path, options::TWO_DASHES, 'L',
823
                 N_("Add directory to search path"), N_("DIR"));
824
 
825
  DEFINE_bool(nostdlib, options::ONE_DASH, '\0', false,
826
              N_(" Only search directories specified on the command line."),
827
              NULL);
828
 
829
  DEFINE_bool(rosegment, options::TWO_DASHES, '\0', false,
830
              N_(" Put read-only non-executable sections in their own segment"),
831
              NULL);
832
 
833
  DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
834
                N_("Ignored for compatibility"), N_("EMULATION"));
835
 
836
  DEFINE_bool(print_map, options::TWO_DASHES, 'M', false,
837
              N_("Write map file on standard output"), NULL);
838
  DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"),
839
                N_("MAPFILENAME"));
840
 
841
  DEFINE_bool(nmagic, options::TWO_DASHES, 'n', false,
842
              N_("Do not page align data"), NULL);
843
  DEFINE_bool(omagic, options::EXACTLY_TWO_DASHES, 'N', false,
844
              N_("Do not page align data, do not make text readonly"),
845
              N_("Page align data, make text readonly"));
846
 
847
  DEFINE_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', false,
848
                N_("Enable use of DT_RUNPATH and DT_FLAGS"),
849
                N_("Disable use of DT_RUNPATH and DT_FLAGS"));
850
 
851
  DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false,
852
              N_("Create an output file even if errors occur"), NULL);
853
 
854
  DEFINE_bool_alias(no_undefined, defs, options::TWO_DASHES, '\0',
855
                    N_("Report undefined symbols (even with --shared)"),
856
                    NULL, false);
857
 
858
  DEFINE_string(output, options::TWO_DASHES, 'o', "a.out",
859
                N_("Set output file name"), N_("FILE"));
860
 
861
  DEFINE_uint(optimize, options::EXACTLY_ONE_DASH, 'O', 0,
862
              N_("Optimize output file size"), N_("LEVEL"));
863
 
864
  DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf",
865
                N_("Set output format"), N_("[binary]"));
866
 
867
  DEFINE_bool(p, options::ONE_DASH, '\0', false,
868
              N_("(ARM only) Ignore for backward compatibility"), NULL);
869
 
870
  DEFINE_bool(pie, options::ONE_DASH, '\0', false,
871
              N_("Create a position independent executable"), NULL);
872
  DEFINE_bool_alias(pic_executable, pie, options::TWO_DASHES, '\0',
873
                    N_("Create a position independent executable"), NULL,
874
                    false);
875
 
876
  DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false,
877
              NULL, N_("(ARM only) Ignore for backward compatibility"));
878
 
879
#ifdef ENABLE_PLUGINS
880
  DEFINE_special(plugin, options::TWO_DASHES, '\0',
881
                 N_("Load a plugin library"), N_("PLUGIN"));
882
  DEFINE_special(plugin_opt, options::TWO_DASHES, '\0',
883
                 N_("Pass an option to the plugin"), N_("OPTION"));
884
#endif
885
 
886
  DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
887
              N_("Preread archive symbols when multi-threaded"), NULL);
888
 
889
  DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL,
890
                N_("Print symbols defined and used for each input"),
891
                N_("FILENAME"));
892
 
893
  DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false,
894
              N_("Ignored for SVR4 compatibility"), NULL);
895
 
896
  DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false,
897
              N_("Generate relocations in output"), NULL);
898
 
899
  DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false,
900
              N_("Generate relocatable output"), NULL);
901
  DEFINE_bool_alias(i, relocatable, options::EXACTLY_ONE_DASH, '\0',
902
                    N_("Synonym for -r"), NULL, false);
903
 
904
  DEFINE_bool(relax, options::TWO_DASHES, '\0', false,
905
              N_("Relax branches on certain targets"), NULL);
906
 
907
  DEFINE_string(retain_symbols_file, options::TWO_DASHES, '\0', NULL,
908
                N_("keep only symbols listed in this file"), N_("FILE"));
909
 
910
  // -R really means -rpath, but can mean --just-symbols for
911
  // compatibility with GNU ld.  -rpath is always -rpath, so we list
912
  // it separately.
913
  DEFINE_special(R, options::EXACTLY_ONE_DASH, 'R',
914
                 N_("Add DIR to runtime search path"), N_("DIR"));
915
 
916
  DEFINE_dirlist(rpath, options::ONE_DASH, '\0',
917
                 N_("Add DIR to runtime search path"), N_("DIR"));
918
 
919
  DEFINE_dirlist(rpath_link, options::TWO_DASHES, '\0',
920
                 N_("Add DIR to link time shared library search path"),
921
                 N_("DIR"));
922
 
923
  DEFINE_string(section_ordering_file, options::TWO_DASHES, '\0', NULL,
924
                N_("Layout sections in the order specified."),
925
                N_("FILENAME"));
926
 
927
  DEFINE_special(section_start, options::TWO_DASHES, '\0',
928
                 N_("Set address of section"), N_("SECTION=ADDRESS"));
929
 
930
  DEFINE_optional_string(sort_common, options::TWO_DASHES, '\0', NULL,
931
                         N_("Sort common symbols by alignment"),
932
                         N_("[={ascending,descending}]"));
933
 
934
  DEFINE_uint(spare_dynamic_tags, options::TWO_DASHES, '\0', 5,
935
              N_("Dynamic tag slots to reserve (default 5)"),
936
              N_("COUNT"));
937
 
938
  DEFINE_bool(strip_all, options::TWO_DASHES, 's', false,
939
              N_("Strip all symbols"), NULL);
940
  DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false,
941
              N_("Strip debugging information"), NULL);
942
  DEFINE_bool(strip_debug_non_line, options::TWO_DASHES, '\0', false,
943
              N_("Emit only debug line number information"), NULL);
944
  DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false,
945
              N_("Strip debug symbols that are unused by gdb "
946
                 "(at least versions <= 6.7)"), NULL);
947
  DEFINE_bool(strip_lto_sections, options::TWO_DASHES, '\0', true,
948
              N_("Strip LTO intermediate code sections"), NULL);
949
 
950
  DEFINE_int(stub_group_size, options::TWO_DASHES , '\0', 1,
951
             N_("(ARM only) The maximum distance from instructions in a group "
952
                "of sections to their stubs.  Negative values mean stubs "
953
                "are always after the group. 1 means using default size.\n"),
954
             N_("SIZE"));
955
 
956
  DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false,
957
              N_("Use less memory and more disk I/O "
958
                 "(included only for compatibility with GNU ld)"), NULL);
959
 
960
  DEFINE_bool(shared, options::ONE_DASH, 'G', false,
961
              N_("Generate shared library"), NULL);
962
 
963
  DEFINE_bool(Bshareable, options::ONE_DASH, '\0', false,
964
              N_("Generate shared library"), NULL);
965
 
966
  DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x4000,
967
              N_("Stack size when -fsplit-stack function calls non-split"),
968
              N_("SIZE"));
969
 
970
  // This is not actually special in any way, but I need to give it
971
  // a non-standard accessor-function name because 'static' is a keyword.
972
  DEFINE_special(static, options::ONE_DASH, '\0',
973
                 N_("Do not link against shared libraries"), NULL);
974
 
975
  DEFINE_enum(icf, options::TWO_DASHES, '\0', "none",
976
              N_("Identical Code Folding. "
977
                 "\'--icf=safe\' Folds ctors, dtors and functions whose"
978
                 " pointers are definitely not taken."),
979
              ("[none,all,safe]"),
980
              {"none", "all", "safe"});
981
 
982
  DEFINE_uint(icf_iterations, options::TWO_DASHES , '\0', 0,
983
              N_("Number of iterations of ICF (default 2)"), N_("COUNT"));
984
 
985
  DEFINE_bool(print_icf_sections, options::TWO_DASHES, '\0', false,
986
              N_("List folded identical sections on stderr"),
987
              N_("Do not list folded identical sections"));
988
 
989
  DEFINE_set(keep_unique, options::TWO_DASHES, '\0',
990
             N_("Do not fold this symbol during ICF"), N_("SYMBOL"));
991
 
992
  DEFINE_bool(gc_sections, options::TWO_DASHES, '\0', false,
993
              N_("Remove unused sections"),
994
              N_("Don't remove unused sections (default)"));
995
 
996
  DEFINE_bool(print_gc_sections, options::TWO_DASHES, '\0', false,
997
              N_("List removed unused sections on stderr"),
998
              N_("Do not list removed unused sections"));
999
 
1000
  DEFINE_bool(stats, options::TWO_DASHES, '\0', false,
1001
              N_("Print resource usage statistics"), NULL);
1002
 
1003
  DEFINE_string(sysroot, options::TWO_DASHES, '\0', "",
1004
                N_("Set target system root directory"), N_("DIR"));
1005
 
1006
  DEFINE_bool(trace, options::TWO_DASHES, 't', false,
1007
              N_("Print the name of each input file"), NULL);
1008
 
1009
  DEFINE_special(script, options::TWO_DASHES, 'T',
1010
                 N_("Read linker script"), N_("FILE"));
1011
 
1012
  DEFINE_bool(threads, options::TWO_DASHES, '\0', false,
1013
              N_("Run the linker multi-threaded"),
1014
              N_("Do not run the linker multi-threaded"));
1015
  DEFINE_uint(thread_count, options::TWO_DASHES, '\0', 0,
1016
              N_("Number of threads to use"), N_("COUNT"));
1017
  DEFINE_uint(thread_count_initial, options::TWO_DASHES, '\0', 0,
1018
              N_("Number of threads to use in initial pass"), N_("COUNT"));
1019
  DEFINE_uint(thread_count_middle, options::TWO_DASHES, '\0', 0,
1020
              N_("Number of threads to use in middle pass"), N_("COUNT"));
1021
  DEFINE_uint(thread_count_final, options::TWO_DASHES, '\0', 0,
1022
              N_("Number of threads to use in final pass"), N_("COUNT"));
1023
 
1024
  DEFINE_uint64(Tbss, options::ONE_DASH, '\0', -1U,
1025
                N_("Set the address of the bss segment"), N_("ADDRESS"));
1026
  DEFINE_uint64(Tdata, options::ONE_DASH, '\0', -1U,
1027
                N_("Set the address of the data segment"), N_("ADDRESS"));
1028
  DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U,
1029
                N_("Set the address of the text segment"), N_("ADDRESS"));
1030
 
1031
  DEFINE_set(undefined, options::TWO_DASHES, 'u',
1032
             N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
1033
 
1034
  DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
1035
              N_("Synonym for --debug=files"), NULL);
1036
 
1037
  DEFINE_special(version_script, options::TWO_DASHES, '\0',
1038
                 N_("Read version script"), N_("FILE"));
1039
 
1040
  DEFINE_bool(warn_common, options::TWO_DASHES, '\0', false,
1041
              N_("Warn about duplicate common symbols"),
1042
              N_("Do not warn about duplicate common symbols (default)"));
1043
 
1044
  DEFINE_bool(warn_constructors, options::TWO_DASHES, '\0', false,
1045
              N_("Ignored"), N_("Ignored"));
1046
 
1047
  DEFINE_bool(warn_execstack, options::TWO_DASHES, '\0', false,
1048
              N_("Warn if the stack is executable"),
1049
              N_("Do not warn if the stack is executable (default)"));
1050
 
1051
  DEFINE_bool(warn_mismatch, options::TWO_DASHES, '\0', true,
1052
              NULL, N_("Don't warn about mismatched input files"));
1053
 
1054
  DEFINE_bool(warn_multiple_gp, options::TWO_DASHES, '\0', false,
1055
              N_("Ignored"), NULL);
1056
 
1057
  DEFINE_bool(warn_search_mismatch, options::TWO_DASHES, '\0', true,
1058
              N_("Warn when skipping an incompatible library"),
1059
              N_("Don't warn when skipping an incompatible library"));
1060
 
1061
  DEFINE_bool(warn_shared_textrel, options::TWO_DASHES, '\0', false,
1062
              N_("Warn if text segment is not shareable"),
1063
              N_("Do not warn if text segment is not shareable (default)"));
1064
 
1065
  DEFINE_bool(warn_unresolved_symbols, options::TWO_DASHES, '\0', false,
1066
              N_("Report unresolved symbols as warnings"),
1067
              NULL);
1068
  DEFINE_bool_alias(error_unresolved_symbols, warn_unresolved_symbols,
1069
                    options::TWO_DASHES, '\0',
1070
                    N_("Report unresolved symbols as errors"),
1071
                    NULL, true);
1072
 
1073
  DEFINE_bool(wchar_size_warning, options::TWO_DASHES, '\0', true, NULL,
1074
              N_("(ARM only) Do not warn about objects with incompatible "
1075
                 "wchar_t sizes"));
1076
 
1077
  DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false,
1078
              N_("Include all archive contents"),
1079
              N_("Include only needed archive contents"));
1080
 
1081
  DEFINE_set(wrap, options::TWO_DASHES, '\0',
1082
             N_("Use wrapper functions for SYMBOL"), N_("SYMBOL"));
1083
 
1084
  DEFINE_set(trace_symbol, options::TWO_DASHES, 'y',
1085
             N_("Trace references to symbol"), N_("SYMBOL"));
1086
 
1087
  DEFINE_bool(undefined_version, options::TWO_DASHES, '\0', true,
1088
              N_("Allow unused version in script (default)"),
1089
              N_("Do not allow unused version in script"));
1090
 
1091
  DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "",
1092
                N_("Default search path for Solaris compatibility"),
1093
                N_("PATH"));
1094
 
1095
  DEFINE_special(start_group, options::TWO_DASHES, '(',
1096
                 N_("Start a library search group"), NULL);
1097
  DEFINE_special(end_group, options::TWO_DASHES, ')',
1098
                 N_("End a library search group"), NULL);
1099
 
1100
 
1101
  DEFINE_special(start_lib, options::TWO_DASHES, '\0',
1102
                 N_("Start a library"), NULL);
1103
  DEFINE_special(end_lib, options::TWO_DASHES, '\0',
1104
                 N_("End a library "), NULL);
1105
 
1106
  // The -z options.
1107
 
1108
  DEFINE_bool(combreloc, options::DASH_Z, '\0', true,
1109
              N_("Sort dynamic relocs"),
1110
              N_("Do not sort dynamic relocs"));
1111
  DEFINE_uint64(common_page_size, options::DASH_Z, '\0', 0,
1112
                N_("Set common page size to SIZE"), N_("SIZE"));
1113
  DEFINE_bool(defs, options::DASH_Z, '\0', false,
1114
              N_("Report undefined symbols (even with --shared)"),
1115
              NULL);
1116
  DEFINE_bool(execstack, options::DASH_Z, '\0', false,
1117
              N_("Mark output as requiring executable stack"), NULL);
1118
  DEFINE_bool(initfirst, options::DASH_Z, '\0', false,
1119
              N_("Mark DSO to be initialized first at runtime"),
1120
              NULL);
1121
  DEFINE_bool(interpose, options::DASH_Z, '\0', false,
1122
              N_("Mark object to interpose all DSOs but executable"),
1123
              NULL);
1124
  DEFINE_bool_alias(lazy, now, options::DASH_Z, '\0',
1125
                    N_("Mark object for lazy runtime binding (default)"),
1126
                    NULL, true);
1127
  DEFINE_bool(loadfltr, options::DASH_Z, '\0', false,
1128
              N_("Mark object requiring immediate process"),
1129
              NULL);
1130
  DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0,
1131
                N_("Set maximum page size to SIZE"), N_("SIZE"));
1132
  DEFINE_bool(muldefs, options::DASH_Z, '\0', false,
1133
              N_("Allow multiple definitions of symbols"),
1134
              NULL);
1135
  // copyreloc is here in the list because there is only -z
1136
  // nocopyreloc, not -z copyreloc.
1137
  DEFINE_bool(copyreloc, options::DASH_Z, '\0', true,
1138
              NULL,
1139
              N_("Do not create copy relocs"));
1140
  DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false,
1141
              N_("Mark object not to use default search paths"),
1142
              NULL);
1143
  DEFINE_bool(nodelete, options::DASH_Z, '\0', false,
1144
              N_("Mark DSO non-deletable at runtime"),
1145
              NULL);
1146
  DEFINE_bool(nodlopen, options::DASH_Z, '\0', false,
1147
              N_("Mark DSO not available to dlopen"),
1148
              NULL);
1149
  DEFINE_bool(nodump, options::DASH_Z, '\0', false,
1150
              N_("Mark DSO not available to dldump"),
1151
              NULL);
1152
  DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
1153
              N_("Mark output as not requiring executable stack"), NULL);
1154
  DEFINE_bool(now, options::DASH_Z, '\0', false,
1155
              N_("Mark object for immediate function binding"),
1156
              NULL);
1157
  DEFINE_bool(origin, options::DASH_Z, '\0', false,
1158
              N_("Mark DSO to indicate that needs immediate $ORIGIN "
1159
                 "processing at runtime"), NULL);
1160
  DEFINE_bool(relro, options::DASH_Z, '\0', false,
1161
              N_("Where possible mark variables read-only after relocation"),
1162
              N_("Don't mark variables read-only after relocation"));
1163
  DEFINE_bool(text, options::DASH_Z, '\0', false,
1164
              N_("Do not permit relocations in read-only segments"),
1165
              NULL);
1166
  DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0',
1167
                    N_("Permit relocations in read-only segments (default)"),
1168
                    NULL, true);
1169
 
1170
 public:
1171
  typedef options::Dir_list Dir_list;
1172
 
1173
  General_options();
1174
 
1175
  // Does post-processing on flags, making sure they all have
1176
  // non-conflicting values.  Also converts some flags from their
1177
  // "standard" types (string, etc), to another type (enum, DirList),
1178
  // which can be accessed via a separate method.  Dies if it notices
1179
  // any problems.
1180
  void finalize();
1181
 
1182
  // True if we printed the version information.
1183
  bool
1184
  printed_version() const
1185
  { return this->printed_version_; }
1186
 
1187
  // The macro defines output() (based on --output), but that's a
1188
  // generic name.  Provide this alternative name, which is clearer.
1189
  const char*
1190
  output_file_name() const
1191
  { return this->output(); }
1192
 
1193
  // This is not defined via a flag, but combines flags to say whether
1194
  // the output is position-independent or not.
1195
  bool
1196
  output_is_position_independent() const
1197
  { return this->shared() || this->pie(); }
1198
 
1199
  // Return true if the output is something that can be exec()ed, such
1200
  // as a static executable, or a position-dependent or
1201
  // position-independent executable, but not a dynamic library or an
1202
  // object file.
1203
  bool
1204
  output_is_executable() const
1205
  { return !this->shared() && !this->relocatable(); }
1206
 
1207
  // This would normally be static(), and defined automatically, but
1208
  // since static is a keyword, we need to come up with our own name.
1209
  bool
1210
  is_static() const
1211
  { return static_; }
1212
 
1213
  // In addition to getting the input and output formats as a string
1214
  // (via format() and oformat()), we also give access as an enum.
1215
  enum Object_format
1216
  {
1217
    // Ordinary ELF.
1218
    OBJECT_FORMAT_ELF,
1219
    // Straight binary format.
1220
    OBJECT_FORMAT_BINARY
1221
  };
1222
 
1223
  // Convert a string to an Object_format.  Gives an error if the
1224
  // string is not recognized.
1225
  static Object_format
1226
  string_to_object_format(const char* arg);
1227
 
1228
  // Note: these functions are not very fast.
1229
  Object_format format_enum() const;
1230
  Object_format oformat_enum() const;
1231
 
1232
  // Return whether FILENAME is in a system directory.
1233
  bool
1234
  is_in_system_directory(const std::string& name) const;
1235
 
1236
  // RETURN whether SYMBOL_NAME should be kept, according to symbols_to_retain_.
1237
  bool
1238
  should_retain_symbol(const char* symbol_name) const
1239
    {
1240
      if (symbols_to_retain_.empty())    // means flag wasn't specified
1241
        return true;
1242
      return symbols_to_retain_.find(symbol_name) != symbols_to_retain_.end();
1243
    }
1244
 
1245
  // These are the best way to get access to the execstack state,
1246
  // not execstack() and noexecstack() which are hard to use properly.
1247
  bool
1248
  is_execstack_set() const
1249
  { return this->execstack_status_ != EXECSTACK_FROM_INPUT; }
1250
 
1251
  bool
1252
  is_stack_executable() const
1253
  { return this->execstack_status_ == EXECSTACK_YES; }
1254
 
1255
  bool
1256
  icf_enabled() const
1257
  { return this->icf_status_ != ICF_NONE; }
1258
 
1259
  bool
1260
  icf_safe_folding() const
1261
  { return this->icf_status_ == ICF_SAFE; }
1262
 
1263
  // The --demangle option takes an optional string, and there is also
1264
  // a --no-demangle option.  This is the best way to decide whether
1265
  // to demangle or not.
1266
  bool
1267
  do_demangle() const
1268
  { return this->do_demangle_; }
1269
 
1270
  // Returns TRUE if any plugin libraries have been loaded.
1271
  bool
1272
  has_plugins() const
1273
  { return this->plugins_ != NULL; }
1274
 
1275
  // Return a pointer to the plugin manager.
1276
  Plugin_manager*
1277
  plugins() const
1278
  { return this->plugins_; }
1279
 
1280
  // True iff SYMBOL was found in the file specified by dynamic-list.
1281
  bool
1282
  in_dynamic_list(const char* symbol) const
1283
  { return this->dynamic_list_.version_script_info()->symbol_is_local(symbol); }
1284
 
1285
  // Finalize the dynamic list.
1286
  void
1287
  finalize_dynamic_list()
1288
  { this->dynamic_list_.version_script_info()->finalize(); }
1289
 
1290
  // The mode selected by the --incremental options.
1291
  enum Incremental_mode
1292
  {
1293
    // No incremental linking (--no-incremental).
1294
    INCREMENTAL_OFF,
1295
    // Incremental update only (--incremental-update).
1296
    INCREMENTAL_UPDATE,
1297
    // Force a full link, but prepare for subsequent incremental link
1298
    // (--incremental-full).
1299
    INCREMENTAL_FULL,
1300
    // Incremental update if possible, fallback to full link  (--incremental).
1301
    INCREMENTAL_AUTO
1302
  };
1303
 
1304
  // The incremental linking mode.
1305
  Incremental_mode
1306
  incremental_mode() const
1307
  { return this->incremental_mode_; }
1308
 
1309
  // The disposition given by the --incremental-changed,
1310
  // --incremental-unchanged or --incremental-unknown option.  The
1311
  // value may change as we proceed parsing the command line flags.
1312
  Incremental_disposition
1313
  incremental_disposition() const
1314
  { return this->incremental_disposition_; }
1315
 
1316
  // Return true if S is the name of a library excluded from automatic
1317
  // symbol export.
1318
  bool
1319
  check_excluded_libs(const std::string &s) const;
1320
 
1321
  // If an explicit start address was given for section SECNAME with
1322
  // the --section-start option, return true and set *PADDR to the
1323
  // address.  Otherwise return false.
1324
  bool
1325
  section_start(const char* secname, uint64_t* paddr) const;
1326
 
1327
  enum Fix_v4bx
1328
  {
1329
    // Leave original instruction.
1330
    FIX_V4BX_NONE,
1331
    // Replace instruction.
1332
    FIX_V4BX_REPLACE,
1333
    // Generate an interworking veneer.
1334
    FIX_V4BX_INTERWORKING
1335
  };
1336
 
1337
  Fix_v4bx
1338
  fix_v4bx() const
1339
  { return (this->fix_v4bx_); }
1340
 
1341
  enum Endianness
1342
  {
1343
    ENDIANNESS_NOT_SET,
1344
    ENDIANNESS_BIG,
1345
    ENDIANNESS_LITTLE
1346
  };
1347
 
1348
  Endianness
1349
  endianness() const
1350
  { return this->endianness_; }
1351
 
1352
 private:
1353
  // Don't copy this structure.
1354
  General_options(const General_options&);
1355
  General_options& operator=(const General_options&);
1356
 
1357
  // Whether to mark the stack as executable.
1358
  enum Execstack
1359
  {
1360
    // Not set on command line.
1361
    EXECSTACK_FROM_INPUT,
1362
    // Mark the stack as executable (-z execstack).
1363
    EXECSTACK_YES,
1364
    // Mark the stack as not executable (-z noexecstack).
1365
    EXECSTACK_NO
1366
  };
1367
 
1368
  enum Icf_status
1369
  {
1370
    // Do not fold any functions (Default or --icf=none).
1371
    ICF_NONE,
1372
    // All functions are candidates for folding. (--icf=all).
1373
    ICF_ALL,
1374
    // Only ctors and dtors are candidates for folding. (--icf=safe).
1375
    ICF_SAFE
1376
  };
1377
 
1378
  void
1379
  set_icf_status(Icf_status value)
1380
  { this->icf_status_ = value; }
1381
 
1382
  void
1383
  set_execstack_status(Execstack value)
1384
  { this->execstack_status_ = value; }
1385
 
1386
  void
1387
  set_do_demangle(bool value)
1388
  { this->do_demangle_ = value; }
1389
 
1390
  void
1391
  set_static(bool value)
1392
  { static_ = value; }
1393
 
1394
  // These are called by finalize() to set up the search-path correctly.
1395
  void
1396
  add_to_library_path_with_sysroot(const char* arg)
1397
  { this->add_search_directory_to_library_path(Search_directory(arg, true)); }
1398
 
1399
  // Apply any sysroot to the directory lists.
1400
  void
1401
  add_sysroot();
1402
 
1403
  // Add a plugin and its arguments to the list of plugins.
1404
  void
1405
  add_plugin(const char* filename);
1406
 
1407
  // Add a plugin option.
1408
  void
1409
  add_plugin_option(const char* opt);
1410
 
1411
  // Whether we printed version information.
1412
  bool printed_version_;
1413
  // Whether to mark the stack as executable.
1414
  Execstack execstack_status_;
1415
  // Whether to do code folding.
1416
  Icf_status icf_status_;
1417
  // Whether to do a static link.
1418
  bool static_;
1419
  // Whether to do demangling.
1420
  bool do_demangle_;
1421
  // List of plugin libraries.
1422
  Plugin_manager* plugins_;
1423
  // The parsed output of --dynamic-list files.  For convenience in
1424
  // script.cc, we store this as a Script_options object, even though
1425
  // we only use a single Version_tree from it.
1426
  Script_options dynamic_list_;
1427
  // The incremental linking mode.
1428
  Incremental_mode incremental_mode_;
1429
  // The disposition given by the --incremental-changed,
1430
  // --incremental-unchanged or --incremental-unknown option.  The
1431
  // value may change as we proceed parsing the command line flags.
1432
  Incremental_disposition incremental_disposition_;
1433
  // Whether we have seen one of the options that require incremental
1434
  // build (--incremental-changed, --incremental-unchanged or
1435
  // --incremental-unknown)
1436
  bool implicit_incremental_;
1437
  // Libraries excluded from automatic export, via --exclude-libs.
1438
  Unordered_set<std::string> excluded_libs_;
1439
  // List of symbol-names to keep, via -retain-symbol-info.
1440
  Unordered_set<std::string> symbols_to_retain_;
1441
  // Map from section name to address from --section-start.
1442
  std::map<std::string, uint64_t> section_starts_;
1443
  // Whether to process armv4 bx instruction relocation.
1444
  Fix_v4bx fix_v4bx_;
1445
  // Endianness.
1446
  Endianness endianness_;
1447
};
1448
 
1449
// The position-dependent options.  We use this to store the state of
1450
// the commandline at a particular point in parsing for later
1451
// reference.  For instance, if we see "ld --whole-archive foo.a
1452
// --no-whole-archive," we want to store the whole-archive option with
1453
// foo.a, so when the time comes to parse foo.a we know we should do
1454
// it in whole-archive mode.  We could store all of General_options,
1455
// but that's big, so we just pick the subset of flags that actually
1456
// change in a position-dependent way.
1457
 
1458
#define DEFINE_posdep(varname__, type__)        \
1459
 public:                                        \
1460
  type__                                        \
1461
  varname__() const                             \
1462
  { return this->varname__##_; }                \
1463
                                                \
1464
  void                                          \
1465
  set_##varname__(type__ value)                 \
1466
  { this->varname__##_ = value; }               \
1467
 private:                                       \
1468
  type__ varname__##_
1469
 
1470
class Position_dependent_options
1471
{
1472
 public:
1473
  Position_dependent_options(const General_options& options
1474
                             = Position_dependent_options::default_options_)
1475
  { copy_from_options(options); }
1476
 
1477
  void copy_from_options(const General_options& options)
1478
  {
1479
    this->set_as_needed(options.as_needed());
1480
    this->set_Bdynamic(options.Bdynamic());
1481
    this->set_format_enum(options.format_enum());
1482
    this->set_whole_archive(options.whole_archive());
1483
    this->set_incremental_disposition(options.incremental_disposition());
1484
  }
1485
 
1486
  DEFINE_posdep(as_needed, bool);
1487
  DEFINE_posdep(Bdynamic, bool);
1488
  DEFINE_posdep(format_enum, General_options::Object_format);
1489
  DEFINE_posdep(whole_archive, bool);
1490
  DEFINE_posdep(incremental_disposition, Incremental_disposition);
1491
 
1492
 private:
1493
  // This is a General_options with everything set to its default
1494
  // value.  A Position_dependent_options created with no argument
1495
  // will take its values from here.
1496
  static General_options default_options_;
1497
};
1498
 
1499
 
1500
// A single file or library argument from the command line.
1501
 
1502
class Input_file_argument
1503
{
1504
 public:
1505
  enum Input_file_type
1506
  {
1507
    // A regular file, name used as-is, not searched.
1508
    INPUT_FILE_TYPE_FILE,
1509
    // A library name.  When used, "lib" will be prepended and ".so" or
1510
    // ".a" appended to make a filename, and that filename will be searched
1511
    // for using the -L paths.
1512
    INPUT_FILE_TYPE_LIBRARY,
1513
    // A regular file, name used as-is, but searched using the -L paths.
1514
    INPUT_FILE_TYPE_SEARCHED_FILE
1515
  };
1516
 
1517
  // name: file name or library name
1518
  // type: the type of this input file.
1519
  // extra_search_path: an extra directory to look for the file, prior
1520
  //         to checking the normal library search path.  If this is "",
1521
  //         then no extra directory is added.
1522
  // just_symbols: whether this file only defines symbols.
1523
  // options: The position dependent options at this point in the
1524
  //         command line, such as --whole-archive.
1525
  Input_file_argument()
1526
    : name_(), type_(INPUT_FILE_TYPE_FILE), extra_search_path_(""),
1527
      just_symbols_(false), options_(), arg_serial_(0)
1528
  { }
1529
 
1530
  Input_file_argument(const char* name, Input_file_type type,
1531
                      const char* extra_search_path,
1532
                      bool just_symbols,
1533
                      const Position_dependent_options& options)
1534
    : name_(name), type_(type), extra_search_path_(extra_search_path),
1535
      just_symbols_(just_symbols), options_(options), arg_serial_(0)
1536
  { }
1537
 
1538
  // You can also pass in a General_options instance instead of a
1539
  // Position_dependent_options.  In that case, we extract the
1540
  // position-independent vars from the General_options and only store
1541
  // those.
1542
  Input_file_argument(const char* name, Input_file_type type,
1543
                      const char* extra_search_path,
1544
                      bool just_symbols,
1545
                      const General_options& options)
1546
    : name_(name), type_(type), extra_search_path_(extra_search_path),
1547
      just_symbols_(just_symbols), options_(options), arg_serial_(0)
1548
  { }
1549
 
1550
  const char*
1551
  name() const
1552
  { return this->name_.c_str(); }
1553
 
1554
  const Position_dependent_options&
1555
  options() const
1556
  { return this->options_; }
1557
 
1558
  bool
1559
  is_lib() const
1560
  { return type_ == INPUT_FILE_TYPE_LIBRARY; }
1561
 
1562
  bool
1563
  is_searched_file() const
1564
  { return type_ == INPUT_FILE_TYPE_SEARCHED_FILE; }
1565
 
1566
  const char*
1567
  extra_search_path() const
1568
  {
1569
    return (this->extra_search_path_.empty()
1570
            ? NULL
1571
            : this->extra_search_path_.c_str());
1572
  }
1573
 
1574
  // Return whether we should only read symbols from this file.
1575
  bool
1576
  just_symbols() const
1577
  { return this->just_symbols_; }
1578
 
1579
  // Return whether this file may require a search using the -L
1580
  // options.
1581
  bool
1582
  may_need_search() const
1583
  {
1584
    return (this->is_lib()
1585
            || this->is_searched_file()
1586
            || !this->extra_search_path_.empty());
1587
  }
1588
 
1589
  // Set the serial number for this argument.
1590
  void
1591
  set_arg_serial(unsigned int arg_serial)
1592
  { this->arg_serial_ = arg_serial; }
1593
 
1594
  // Get the serial number.
1595
  unsigned int
1596
  arg_serial() const
1597
  { return this->arg_serial_; }
1598
 
1599
 private:
1600
  // We use std::string, not const char*, here for convenience when
1601
  // using script files, so that we do not have to preserve the string
1602
  // in that case.
1603
  std::string name_;
1604
  Input_file_type type_;
1605
  std::string extra_search_path_;
1606
  bool just_symbols_;
1607
  Position_dependent_options options_;
1608
  // A unique index for this file argument in the argument list.
1609
  unsigned int arg_serial_;
1610
};
1611
 
1612
// A file or library, or a group, from the command line.
1613
 
1614
class Input_argument
1615
{
1616
 public:
1617
  // Create a file or library argument.
1618
  explicit Input_argument(Input_file_argument file)
1619
    : is_file_(true), file_(file), group_(NULL), lib_(NULL), script_info_(NULL)
1620
  { }
1621
 
1622
  // Create a group argument.
1623
  explicit Input_argument(Input_file_group* group)
1624
    : is_file_(false), group_(group), lib_(NULL), script_info_(NULL)
1625
  { }
1626
 
1627
  // Create a lib argument.
1628
  explicit Input_argument(Input_file_lib* lib)
1629
    : is_file_(false), group_(NULL), lib_(lib), script_info_(NULL)
1630
  { }
1631
 
1632
  // Return whether this is a file.
1633
  bool
1634
  is_file() const
1635
  { return this->is_file_; }
1636
 
1637
  // Return whether this is a group.
1638
  bool
1639
  is_group() const
1640
  { return !this->is_file_ && this->lib_ == NULL; }
1641
 
1642
  // Return whether this is a lib.
1643
  bool
1644
  is_lib() const
1645
  { return this->lib_ != NULL; }
1646
 
1647
  // Return the information about the file.
1648
  const Input_file_argument&
1649
  file() const
1650
  {
1651
    gold_assert(this->is_file_);
1652
    return this->file_;
1653
  }
1654
 
1655
  // Return the information about the group.
1656
  const Input_file_group*
1657
  group() const
1658
  {
1659
    gold_assert(!this->is_file_);
1660
    return this->group_;
1661
  }
1662
 
1663
  Input_file_group*
1664
  group()
1665
  {
1666
    gold_assert(!this->is_file_);
1667
    return this->group_;
1668
  }
1669
 
1670
  // Return the information about the lib.
1671
  const Input_file_lib*
1672
  lib() const
1673
  {
1674
    gold_assert(!this->is_file_);
1675
    gold_assert(this->lib_);
1676
    return this->lib_;
1677
  }
1678
 
1679
  Input_file_lib*
1680
  lib()
1681
  {
1682
    gold_assert(!this->is_file_);
1683
    gold_assert(this->lib_);
1684
    return this->lib_;
1685
  }
1686
 
1687
  // If a script generated this argument, store a pointer to the script info.
1688
  // Currently used only for recording incremental link information.
1689
  void
1690
  set_script_info(Script_info* info)
1691
  { this->script_info_ = info; }
1692
 
1693
  Script_info*
1694
  script_info() const
1695
  { return this->script_info_; }
1696
 
1697
 private:
1698
  bool is_file_;
1699
  Input_file_argument file_;
1700
  Input_file_group* group_;
1701
  Input_file_lib* lib_;
1702
  Script_info* script_info_;
1703
};
1704
 
1705
typedef std::vector<Input_argument> Input_argument_list;
1706
 
1707
// A group from the command line.  This is a set of arguments within
1708
// --start-group ... --end-group.
1709
 
1710
class Input_file_group
1711
{
1712
 public:
1713
  typedef Input_argument_list::const_iterator const_iterator;
1714
 
1715
  Input_file_group()
1716
    : files_()
1717
  { }
1718
 
1719
  // Add a file to the end of the group.
1720
  Input_argument&
1721
  add_file(const Input_file_argument& arg)
1722
  {
1723
    this->files_.push_back(Input_argument(arg));
1724
    return this->files_.back();
1725
  }
1726
 
1727
  // Iterators to iterate over the group contents.
1728
 
1729
  const_iterator
1730
  begin() const
1731
  { return this->files_.begin(); }
1732
 
1733
  const_iterator
1734
  end() const
1735
  { return this->files_.end(); }
1736
 
1737
 private:
1738
  Input_argument_list files_;
1739
};
1740
 
1741
// A lib from the command line.  This is a set of arguments within
1742
// --start-lib ... --end-lib.
1743
 
1744
class Input_file_lib
1745
{
1746
 public:
1747
  typedef Input_argument_list::const_iterator const_iterator;
1748
 
1749
  Input_file_lib(const Position_dependent_options& options)
1750
    : files_(), options_(options)
1751
  { }
1752
 
1753
  // Add a file to the end of the lib.
1754
  Input_argument&
1755
  add_file(const Input_file_argument& arg)
1756
  {
1757
    this->files_.push_back(Input_argument(arg));
1758
    return this->files_.back();
1759
  }
1760
 
1761
  const Position_dependent_options&
1762
  options() const
1763
  { return this->options_; }
1764
 
1765
  // Iterators to iterate over the lib contents.
1766
 
1767
  const_iterator
1768
  begin() const
1769
  { return this->files_.begin(); }
1770
 
1771
  const_iterator
1772
  end() const
1773
  { return this->files_.end(); }
1774
 
1775
  size_t
1776
  size() const
1777
  { return this->files_.size(); }
1778
 
1779
 private:
1780
  Input_argument_list files_;
1781
  Position_dependent_options options_;
1782
};
1783
 
1784
// A list of files from the command line or a script.
1785
 
1786
class Input_arguments
1787
{
1788
 public:
1789
  typedef Input_argument_list::const_iterator const_iterator;
1790
 
1791
  Input_arguments()
1792
    : input_argument_list_(), in_group_(false), in_lib_(false), file_count_(0)
1793
  { }
1794
 
1795
  // Add a file.
1796
  Input_argument&
1797
  add_file(Input_file_argument& arg);
1798
 
1799
  // Start a group (the --start-group option).
1800
  void
1801
  start_group();
1802
 
1803
  // End a group (the --end-group option).
1804
  void
1805
  end_group();
1806
 
1807
  // Start a lib (the --start-lib option).
1808
  void
1809
  start_lib(const Position_dependent_options&);
1810
 
1811
  // End a lib (the --end-lib option).
1812
  void
1813
  end_lib();
1814
 
1815
  // Return whether we are currently in a group.
1816
  bool
1817
  in_group() const
1818
  { return this->in_group_; }
1819
 
1820
  // Return whether we are currently in a lib.
1821
  bool
1822
  in_lib() const
1823
  { return this->in_lib_; }
1824
 
1825
  // The number of entries in the list.
1826
  int
1827
  size() const
1828
  { return this->input_argument_list_.size(); }
1829
 
1830
  // Iterators to iterate over the list of input files.
1831
 
1832
  const_iterator
1833
  begin() const
1834
  { return this->input_argument_list_.begin(); }
1835
 
1836
  const_iterator
1837
  end() const
1838
  { return this->input_argument_list_.end(); }
1839
 
1840
  // Return whether the list is empty.
1841
  bool
1842
  empty() const
1843
  { return this->input_argument_list_.empty(); }
1844
 
1845
  // Return the number of input files.  This may be larger than
1846
  // input_argument_list_.size(), because of files that are part
1847
  // of groups or libs.
1848
  int
1849
  number_of_input_files() const
1850
  { return this->file_count_; }
1851
 
1852
 private:
1853
  Input_argument_list input_argument_list_;
1854
  bool in_group_;
1855
  bool in_lib_;
1856
  unsigned int file_count_;
1857
};
1858
 
1859
 
1860
// All the information read from the command line.  These are held in
1861
// three separate structs: one to hold the options (--foo), one to
1862
// hold the filenames listed on the commandline, and one to hold
1863
// linker script information.  This third is not a subset of the other
1864
// two because linker scripts can be specified either as options (via
1865
// -T) or as a file.
1866
 
1867
class Command_line
1868
{
1869
 public:
1870
  typedef Input_arguments::const_iterator const_iterator;
1871
 
1872
  Command_line();
1873
 
1874
  // Process the command line options.  This will exit with an
1875
  // appropriate error message if an unrecognized option is seen.
1876
  void
1877
  process(int argc, const char** argv);
1878
 
1879
  // Process one command-line option.  This takes the index of argv to
1880
  // process, and returns the index for the next option.  no_more_options
1881
  // is set to true if argv[i] is "--".
1882
  int
1883
  process_one_option(int argc, const char** argv, int i,
1884
                     bool* no_more_options);
1885
 
1886
  // Get the general options.
1887
  const General_options&
1888
  options() const
1889
  { return this->options_; }
1890
 
1891
  // Get the position dependent options.
1892
  const Position_dependent_options&
1893
  position_dependent_options() const
1894
  { return this->position_options_; }
1895
 
1896
  // Get the linker-script options.
1897
  Script_options&
1898
  script_options()
1899
  { return this->script_options_; }
1900
 
1901
  // Finalize the version-script options and return them.
1902
  const Version_script_info&
1903
  version_script();
1904
 
1905
  // Get the input files.
1906
  Input_arguments&
1907
  inputs()
1908
  { return this->inputs_; }
1909
 
1910
  // The number of input files.
1911
  int
1912
  number_of_input_files() const
1913
  { return this->inputs_.number_of_input_files(); }
1914
 
1915
  // Iterators to iterate over the list of input files.
1916
 
1917
  const_iterator
1918
  begin() const
1919
  { return this->inputs_.begin(); }
1920
 
1921
  const_iterator
1922
  end() const
1923
  { return this->inputs_.end(); }
1924
 
1925
 private:
1926
  Command_line(const Command_line&);
1927
  Command_line& operator=(const Command_line&);
1928
 
1929
  // This is a dummy class to provide a constructor that runs before
1930
  // the constructor for the General_options.  The Pre_options constructor
1931
  // is used as a hook to set the flag enabling the options to register
1932
  // themselves.
1933
  struct Pre_options {
1934
    Pre_options();
1935
  };
1936
 
1937
  // This must come before options_!
1938
  Pre_options pre_options_;
1939
  General_options options_;
1940
  Position_dependent_options position_options_;
1941
  Script_options script_options_;
1942
  Input_arguments inputs_;
1943
};
1944
 
1945
} // End namespace gold.
1946
 
1947
#endif // !defined(GOLD_OPTIONS_H)

powered by: WebSVN 2.1.0

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