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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gas/] [as.h] - Blame information for rev 438

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1 205 julius
/* as.h - global header file
2
   Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3
   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4
   Free Software Foundation, Inc.
5
 
6
   This file is part of GAS, the GNU Assembler.
7
 
8
   GAS 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, or (at your option)
11
   any later version.
12
 
13
   GAS is distributed in the hope that it will be useful, but WITHOUT
14
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16
   License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with GAS; see the file COPYING.  If not, write to the Free
20
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21
   02110-1301, USA.  */
22
 
23
#ifndef GAS
24
#define GAS 1
25
/* I think this stuff is largely out of date.  xoxorich.
26
 
27
   CAPITALISED names are #defined.
28
   "lowercaseH" is #defined if "lowercase.h" has been #include-d.
29
   "lowercaseT" is a typedef of "lowercase" objects.
30
   "lowercaseP" is type "pointer to object of type 'lowercase'".
31
   "lowercaseS" is typedef struct ... lowercaseS.
32
 
33
   #define DEBUG to enable all the "know" assertion tests.
34
   #define SUSPECT when debugging hash code.
35
   #define COMMON as "extern" for all modules except one, where you #define
36
        COMMON as "".
37
   If TEST is #defined, then we are testing a module: #define COMMON as "".  */
38
 
39
#include "alloca-conf.h"
40
 
41
/* Prefer varargs for non-ANSI compiler, since some will barf if the
42
   ellipsis definition is used with a no-arguments declaration.  */
43
#if defined (HAVE_VARARGS_H) && !defined (__STDC__)
44
#undef HAVE_STDARG_H
45
#endif
46
 
47
#if defined (HAVE_STDARG_H)
48
#define USE_STDARG
49
#endif
50
#if !defined (USE_STDARG) && defined (HAVE_VARARGS_H)
51
#define USE_VARARGS
52
#endif
53
 
54
/* Now, tend to the rest of the configuration.  */
55
 
56
/* System include files first...  */
57
#include <stdio.h>
58
#ifdef HAVE_STRING_H
59
#include <string.h>
60
#else
61
#ifdef HAVE_STRINGS_H
62
#include <strings.h>
63
#endif
64
#endif
65
#ifdef HAVE_STDLIB_H
66
#include <stdlib.h>
67
#endif
68
#ifdef HAVE_UNISTD_H
69
#include <unistd.h>
70
#endif
71
#ifdef HAVE_SYS_TYPES_H
72
/* for size_t, pid_t */
73
#include <sys/types.h>
74
#endif
75
 
76
#ifdef HAVE_ERRNO_H
77
#include <errno.h>
78
#endif
79
 
80
#ifdef USE_STDARG
81
#include <stdarg.h>
82
#endif
83
 
84
#ifdef USE_VARARGS
85
#include <varargs.h>
86
#endif
87
 
88
#if !defined (USE_STDARG) && !defined (USE_VARARGS)
89
/* Roll our own.  */
90
#define va_alist REST
91
#define va_dcl
92
typedef int * va_list;
93
#define va_start(ARGS)  ARGS = &REST
94
#define va_end(ARGS)
95
#endif
96
 
97
#include "getopt.h"
98
/* The first getopt value for machine-independent long options.
99
   150 isn't special; it's just an arbitrary non-ASCII char value.  */
100
#define OPTION_STD_BASE 150
101
/* The first getopt value for machine-dependent long options.
102
   190 gives the standard options room to grow.  */
103
#define OPTION_MD_BASE 190
104
 
105
#ifdef DEBUG
106
#undef NDEBUG
107
#endif
108
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
109
#define __PRETTY_FUNCTION__  ((char *) NULL)
110
#endif
111
#define gas_assert(P) \
112
  ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0)))
113
#undef abort
114
#define abort()         as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
115
 
116
/* Now GNU header files...  */
117
#include "ansidecl.h"
118
#include "bfd.h"
119
#include "libiberty.h"
120
 
121
/* Define the standard progress macros.  */
122
#include "progress.h"
123
 
124
/* This doesn't get taken care of anywhere.  */
125
#ifndef __MWERKS__  /* Metrowerks C chokes on the "defined (inline)"  */
126
#if !defined (__GNUC__) && !defined (inline)
127
#define inline
128
#endif
129
#endif /* !__MWERKS__ */
130
 
131
/* Other stuff from config.h.  */
132
#ifdef NEED_DECLARATION_ENVIRON
133
extern char **environ;
134
#endif
135
#ifdef NEED_DECLARATION_ERRNO
136
extern int errno;
137
#endif
138
#ifdef NEED_DECLARATION_FFS
139
extern int ffs (int);
140
#endif
141
#ifdef NEED_DECLARATION_FREE
142
extern void free ();
143
#endif
144
#ifdef NEED_DECLARATION_MALLOC
145
extern void *malloc ();
146
extern void *realloc ();
147
#endif
148
#ifdef NEED_DECLARATION_STRSTR
149
extern char *strstr ();
150
#endif
151
 
152
#if !HAVE_DECL_VSNPRINTF
153
extern int vsnprintf(char *, size_t, const char *, va_list);
154
#endif
155
 
156
/* This is needed for VMS.  */
157
#if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
158
#define unlink remove
159
#endif
160
 
161
/* Hack to make "gcc -Wall" not complain about obstack macros.  */
162
#if !defined (memcpy) && !defined (bcopy)
163
#define bcopy(src,dest,size)    memcpy (dest, src, size)
164
#endif
165
 
166
/* Make Saber happier on obstack.h.  */
167
#ifdef SABER
168
#undef  __PTR_TO_INT
169
#define __PTR_TO_INT(P) ((int) (P))
170
#undef  __INT_TO_PTR
171
#define __INT_TO_PTR(P) ((char *) (P))
172
#endif
173
 
174
#ifndef __LINE__
175
#define __LINE__ "unknown"
176
#endif /* __LINE__ */
177
 
178
#ifndef __FILE__
179
#define __FILE__ "unknown"
180
#endif /* __FILE__ */
181
 
182
#ifndef FOPEN_WB
183
#ifdef USE_BINARY_FOPEN
184
#include "fopen-bin.h"
185
#else
186
#include "fopen-same.h"
187
#endif
188
#endif
189
 
190
#ifndef EXIT_SUCCESS
191
#define EXIT_SUCCESS 0
192
#define EXIT_FAILURE 1
193
#endif
194
 
195
#ifndef SEEK_SET
196
#define SEEK_SET 0
197
#endif
198
 
199
#define obstack_chunk_alloc xmalloc
200
#define obstack_chunk_free xfree
201
 
202
#define xfree free
203
 
204
#include "asintl.h"
205
 
206
#define BAD_CASE(val)                                                       \
207
  {                                                                         \
208
    as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"),   \
209
              (long) val, __LINE__, __FILE__);                              \
210
  }
211
 
212
#include "flonum.h"
213
 
214
/* These are assembler-wide concepts */
215
 
216
extern bfd *stdoutput;
217
typedef bfd_vma addressT;
218
typedef bfd_signed_vma offsetT;
219
 
220
/* Type of symbol value, etc.  For use in prototypes.  */
221
typedef addressT valueT;
222
 
223
#ifndef COMMON
224
#ifdef TEST
225
#define COMMON                  /* Declare our COMMONs storage here.  */
226
#else
227
#define COMMON extern           /* Our commons live elsewhere.  */
228
#endif
229
#endif
230
/* COMMON now defined */
231
 
232
#ifndef ENABLE_CHECKING
233
#define ENABLE_CHECKING 0
234
#endif
235
 
236
#if ENABLE_CHECKING || defined (DEBUG)
237
#ifndef know
238
#define know(p) gas_assert(p)   /* Verify our assumptions!  */
239
#endif /* not yet defined */
240
#else
241
#define know(p) do {} while (0) /* know() checks are no-op.ed  */
242
#endif
243
 
244
/* input_scrub.c */
245
 
246
/* Supplies sanitised buffers to read.c.
247
   Also understands printing line-number part of error messages.  */
248
 
249
/* subsegs.c     Sub-segments. Also, segment(=expression type)s.*/
250
 
251
typedef asection *segT;
252
#define SEG_NORMAL(SEG)         (   (SEG) != absolute_section   \
253
                                 && (SEG) != undefined_section  \
254
                                 && (SEG) != reg_section        \
255
                                 && (SEG) != expr_section)
256
typedef int subsegT;
257
 
258
/* What subseg we are accessing now?  */
259
COMMON subsegT now_subseg;
260
 
261
/* Segment our instructions emit to.  */
262
COMMON segT now_seg;
263
 
264
#define segment_name(SEG)       bfd_get_section_name (stdoutput, SEG)
265
 
266
extern segT reg_section, expr_section;
267
/* Shouldn't these be eliminated someday?  */
268
extern segT text_section, data_section, bss_section;
269
#define absolute_section        bfd_abs_section_ptr
270
#define undefined_section       bfd_und_section_ptr
271
 
272
enum _relax_state
273
{
274
  /* Dummy frag used by listing code.  */
275
  rs_dummy = 0,
276
 
277
  /* Variable chars to be repeated fr_offset times.
278
     Fr_symbol unused. Used with fr_offset == 0 for a
279
     constant length frag.  */
280
  rs_fill,
281
 
282
  /* Align.  The fr_offset field holds the power of 2 to which to
283
     align.  The fr_var field holds the number of characters in the
284
     fill pattern.  The fr_subtype field holds the maximum number of
285
     bytes to skip when aligning, or 0 if there is no maximum.  */
286
  rs_align,
287
 
288
  /* Align code.  The fr_offset field holds the power of 2 to which
289
     to align.  This type is only generated by machine specific
290
     code, which is normally responsible for handling the fill
291
     pattern.  The fr_subtype field holds the maximum number of
292
     bytes to skip when aligning, or 0 if there is no maximum.  */
293
  rs_align_code,
294
 
295
  /* Test for alignment.  Like rs_align, but used by several targets
296
     to warn if data is not properly aligned.  */
297
  rs_align_test,
298
 
299
  /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
300
     character.  */
301
  rs_org,
302
 
303
#ifndef WORKING_DOT_WORD
304
  /* JF: gunpoint */
305
  rs_broken_word,
306
#endif
307
 
308
  /* Machine specific relaxable (or similarly alterable) instruction.  */
309
  rs_machine_dependent,
310
 
311
  /* .space directive with expression operand that needs to be computed
312
     later.  Similar to rs_org, but different.
313
     fr_symbol: operand
314
     1 variable char: fill character  */
315
  rs_space,
316
 
317
  /* A DWARF leb128 value; only ELF uses this.  The subtype is 0 for
318
     unsigned, 1 for signed.  */
319
  rs_leb128,
320
 
321
  /* Exception frame information which we may be able to optimize.  */
322
  rs_cfa,
323
 
324
  /* Cross-fragment dwarf2 line number optimization.  */
325
  rs_dwarf2dbg
326
};
327
 
328
typedef enum _relax_state relax_stateT;
329
 
330
/* This type is used in prototypes, so it can't be a type that will be
331
   widened for argument passing.  */
332
typedef unsigned int relax_substateT;
333
 
334
/* Enough bits for address, but still an integer type.
335
   Could be a problem, cross-assembling for 64-bit machines.  */
336
typedef addressT relax_addressT;
337
 
338
struct relax_type
339
{
340
  /* Forward reach. Signed number. > 0.  */
341
  offsetT rlx_forward;
342
  /* Backward reach. Signed number. < 0.  */
343
  offsetT rlx_backward;
344
 
345
  /* Bytes length of this address.  */
346
  unsigned char rlx_length;
347
 
348
  /* Next longer relax-state.  0 means there is no 'next' relax-state.  */
349
  relax_substateT rlx_more;
350
};
351
 
352
typedef struct relax_type relax_typeS;
353
 
354
/* main program "as.c" (command arguments etc).  */
355
 
356
COMMON unsigned char flag_no_comments; /* -f */
357
COMMON unsigned char flag_debug; /* -D */
358
COMMON unsigned char flag_signed_overflow_ok; /* -J */
359
#ifndef WORKING_DOT_WORD
360
COMMON unsigned char flag_warn_displacement; /* -K */
361
#endif
362
 
363
/* True if local symbols should be retained.  */
364
COMMON int flag_keep_locals; /* -L */
365
 
366
/* True if we are assembling in MRI mode.  */
367
COMMON int flag_mri;
368
 
369
/* Should the data section be made read-only and appended to the text
370
   section?  */
371
COMMON unsigned char flag_readonly_data_in_text; /* -R */
372
 
373
/* True if warnings should be inhibited.  */
374
COMMON int flag_no_warnings; /* -W */
375
 
376
/* True if warnings count as errors.  */
377
COMMON int flag_fatal_warnings; /* --fatal-warnings */
378
 
379
/* True if we should attempt to generate output even if non-fatal errors
380
   are detected.  */
381
COMMON unsigned char flag_always_generate_output; /* -Z */
382
 
383
/* This is true if the assembler should output time and space usage.  */
384
COMMON unsigned char flag_print_statistics;
385
 
386
/* True if local absolute symbols are to be stripped.  */
387
COMMON int flag_strip_local_absolute;
388
 
389
/* True if we should generate a traditional format object file.  */
390
COMMON int flag_traditional_format;
391
 
392
/* TRUE if .note.GNU-stack section with SEC_CODE should be created */
393
COMMON int flag_execstack;
394
 
395
/* TRUE if .note.GNU-stack section with SEC_CODE should be created */
396
COMMON int flag_noexecstack;
397
 
398
/* name of emitted object file */
399
COMMON char *out_file_name;
400
 
401
/* name of file defining extensions to the basic instruction set */
402
COMMON char *insttbl_file_name;
403
 
404
/* TRUE if we need a second pass.  */
405
COMMON int need_pass_2;
406
 
407
/* TRUE if we should do no relaxing, and
408
   leave lots of padding.  */
409
COMMON int linkrelax;
410
 
411
/* TRUE if we should produce a listing.  */
412
extern int listing;
413
 
414
/* Type of debugging information we should generate.  We currently support
415
   stabs, ECOFF, and DWARF2.
416
 
417
   NOTE!  This means debug information about the assembly source code itself
418
   and _not_ about possible debug information from a high-level language.
419
   This is especially relevant to DWARF2, since the compiler may emit line
420
   number directives that the assembler resolves.  */
421
 
422
enum debug_info_type
423
{
424
  DEBUG_UNSPECIFIED,
425
  DEBUG_NONE,
426
  DEBUG_STABS,
427
  DEBUG_ECOFF,
428
  DEBUG_DWARF,
429
  DEBUG_DWARF2
430
};
431
 
432
extern enum debug_info_type debug_type;
433
extern int use_gnu_debug_info_extensions;
434
 
435
/* Maximum level of macro nesting.  */
436
extern int max_macro_nest;
437
 
438
/* Verbosity level.  */
439
extern int verbose;
440
 
441
/* Obstack chunk size.  Keep large for efficient space use, make small to
442
   increase malloc calls for monitoring memory allocation.  */
443
extern int chunksize;
444
 
445
struct _pseudo_type
446
{
447
  /* assembler mnemonic, lower case, no '.' */
448
  const char *poc_name;
449
  /* Do the work */
450
  void (*poc_handler) (int);
451
  /* Value to pass to handler */
452
  int poc_val;
453
};
454
 
455
typedef struct _pseudo_type pseudo_typeS;
456
 
457
#ifdef USE_STDARG
458
#if (__GNUC__ >= 2) && !defined(VMS)
459
/* for use with -Wformat */
460
 
461
#if __GNUC__ == 2 && __GNUC_MINOR__ < 6
462
/* Support for double underscores in attribute names was added in gcc
463
   2.6, so avoid them if we are using an earlier version.  */
464
#define __printf__ printf
465
#define __format__ format
466
#endif
467
 
468
#define PRINTF_LIKE(FCN) \
469
  void FCN (const char *format, ...) \
470
    __attribute__ ((__format__ (__printf__, 1, 2)))
471
#define PRINTF_WHERE_LIKE(FCN) \
472
  void FCN (char *file, unsigned int line, const char *format, ...) \
473
    __attribute__ ((__format__ (__printf__, 3, 4)))
474
 
475
#else /* __GNUC__ < 2 || defined(VMS) */
476
 
477
#define PRINTF_LIKE(FCN)        void FCN (const char *format, ...)
478
#define PRINTF_WHERE_LIKE(FCN)  void FCN (char *file, \
479
                                          unsigned int line, \
480
                                          const char *format, ...)
481
 
482
#endif /* __GNUC__ < 2 || defined(VMS) */
483
 
484
#else /* ! USE_STDARG */
485
 
486
#define PRINTF_LIKE(FCN)        void FCN ()
487
#define PRINTF_WHERE_LIKE(FCN)  void FCN ()
488
 
489
#endif /* ! USE_STDARG */
490
 
491
PRINTF_LIKE (as_bad);
492
PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
493
PRINTF_LIKE (as_tsktsk);
494
PRINTF_LIKE (as_warn);
495
PRINTF_WHERE_LIKE (as_bad_where);
496
PRINTF_WHERE_LIKE (as_warn_where);
497
 
498
void   as_assert (const char *, int, const char *);
499
void   as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
500
void   sprint_value (char *, addressT);
501
int    had_errors (void);
502
int    had_warnings (void);
503
void   as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
504
void   as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
505
void   print_version_id (void);
506
char * app_push (void);
507
char * atof_ieee (char *, int, LITTLENUM_TYPE *);
508
char * ieee_md_atof (int, char *, int *, bfd_boolean);
509
char * vax_md_atof (int, char *, int *);
510
char * input_scrub_include_file (char *, char *);
511
void   input_scrub_insert_line (const char *);
512
void   input_scrub_insert_file (char *);
513
char * input_scrub_new_file (char *);
514
char * input_scrub_next_buffer (char **bufp);
515
int    do_scrub_chars (int (*get) (char *, int), char *, int);
516
int    gen_to_words (LITTLENUM_TYPE *, int, long);
517
int    had_err (void);
518
int    ignore_input (void);
519
void   cond_finish_check (int);
520
void   cond_exit_macro (int);
521
int    seen_at_least_1_file (void);
522
void   app_pop (char *);
523
void   as_where (char **, unsigned int *);
524
void   bump_line_counters (void);
525
void   do_scrub_begin (int);
526
void   input_scrub_begin (void);
527
void   input_scrub_close (void);
528
void   input_scrub_end (void);
529
int    new_logical_line (char *, int);
530
int    new_logical_line_flags (char *, int, int);
531
void   subsegs_begin (void);
532
void   subseg_change (segT, int);
533
segT   subseg_new (const char *, subsegT);
534
segT   subseg_force_new (const char *, subsegT);
535
void   subseg_set (segT, subsegT);
536
int    subseg_text_p (segT);
537
int    seg_not_empty_p (segT);
538
void   start_dependencies (char *);
539
void   register_dependency (char *);
540
void   print_dependencies (void);
541
segT   subseg_get (const char *, int);
542
 
543
const char *remap_debug_filename (const char *);
544
void add_debug_prefix_map (const char *);
545
 
546
struct expressionS;
547
struct fix;
548
typedef struct symbol symbolS;
549
typedef struct frag fragS;
550
 
551
/* literal.c */
552
valueT add_to_literal_pool (symbolS *, valueT, segT, int);
553
 
554
int check_eh_frame (struct expressionS *, unsigned int *);
555
int eh_frame_estimate_size_before_relax (fragS *);
556
int eh_frame_relax_frag (fragS *);
557
void eh_frame_convert_frag (fragS *);
558
int generic_force_reloc (struct fix *);
559
 
560
#include "expr.h"               /* Before targ-*.h */
561
 
562
/* This one starts the chain of target dependant headers.  */
563
#include "targ-env.h"
564
 
565
#ifdef OBJ_MAYBE_ELF
566
#define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
567
#else
568
#ifdef OBJ_ELF
569
#define IS_ELF 1
570
#else
571
#define IS_ELF 0
572
#endif
573
#endif
574
 
575
#include "write.h"
576
#include "frags.h"
577
#include "hash.h"
578
#include "read.h"
579
#include "symbols.h"
580
 
581
#include "tc.h"
582
#include "obj.h"
583
 
584
#ifdef USE_EMULATIONS
585
#include "emul.h"
586
#endif
587
#include "listing.h"
588
 
589
#ifdef H_TICK_HEX
590
extern int enable_h_tick_hex;
591
#endif
592
 
593
#ifdef TC_M68K
594
/* True if we are assembling in m68k MRI mode.  */
595
COMMON int flag_m68k_mri;
596
#define DOLLAR_AMBIGU flag_m68k_mri
597
#else
598
#define flag_m68k_mri 0
599
#endif
600
 
601
#ifdef WARN_COMMENTS
602
COMMON int           warn_comment;
603
COMMON unsigned int  found_comment;
604
COMMON char *        found_comment_file;
605
#endif
606
 
607
#ifndef DOLLAR_AMBIGU
608
#define DOLLAR_AMBIGU 0
609
#endif
610
 
611
#ifndef NUMBERS_WITH_SUFFIX
612
#define NUMBERS_WITH_SUFFIX 0
613
#endif
614
 
615
#ifndef LOCAL_LABELS_DOLLAR
616
#define LOCAL_LABELS_DOLLAR 0
617
#endif
618
 
619
#ifndef LOCAL_LABELS_FB
620
#define LOCAL_LABELS_FB 0
621
#endif
622
 
623
#ifndef LABELS_WITHOUT_COLONS
624
#define LABELS_WITHOUT_COLONS 0
625
#endif
626
 
627
#ifndef NO_PSEUDO_DOT
628
#define NO_PSEUDO_DOT 0
629
#endif
630
 
631
#ifndef TEXT_SECTION_NAME
632
#define TEXT_SECTION_NAME       ".text"
633
#define DATA_SECTION_NAME       ".data"
634
#define BSS_SECTION_NAME        ".bss"
635
#endif
636
 
637
#ifndef OCTETS_PER_BYTE_POWER
638
#define OCTETS_PER_BYTE_POWER 0
639
#endif
640
#ifndef OCTETS_PER_BYTE
641
#define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
642
#endif
643
#if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
644
 #error "Octets per byte conflicts with its power-of-two definition!"
645
#endif
646
 
647
#endif /* GAS */

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