1 /* as.h - global header file
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 /* I think this stuff is largely out of date. xoxorich.
25 CAPITALISED names are #defined.
26 "lowercaseH" is #defined if "lowercase.h" has been #include-d.
27 "lowercaseT" is a typedef of "lowercase" objects.
28 "lowercaseP" is type "pointer to object of type 'lowercase'".
29 "lowercaseS" is typedef struct ... lowercaseS.
31 #define DEBUG to enable all the "know" assertion tests.
32 #define SUSPECT when debugging hash code.
33 #define COMMON as "extern" for all modules except one, where you #define
35 If TEST is #defined, then we are testing a module: #define COMMON as "". */
37 #include "alloca-conf.h"
39 /* Now, tend to the rest of the configuration. */
41 /* System include files first... */
44 #ifdef STRING_WITH_STRINGS
63 #ifdef HAVE_SYS_TYPES_H
64 /* for size_t, pid_t */
65 #include <sys/types.h>
75 /* The first getopt value for machine-independent long options.
76 150 isn't special; it's just an arbitrary non-ASCII char value. */
77 #define OPTION_STD_BASE 150
78 /* The first getopt value for machine-dependent long options.
79 190 gives the standard options room to grow. */
80 #define OPTION_MD_BASE 190
85 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
86 #define __PRETTY_FUNCTION__ ((char *) NULL)
88 #define gas_assert(P) \
89 ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0)))
91 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
93 /* Now GNU header files... */
96 #include "libiberty.h"
98 /* Define the standard progress macros. */
101 /* This doesn't get taken care of anywhere. */
102 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */
103 #if !defined (__GNUC__) && !defined (inline)
106 #endif /* !__MWERKS__ */
108 /* Other stuff from config.h. */
109 #ifdef NEED_DECLARATION_ENVIRON
110 extern char **environ;
112 #ifdef NEED_DECLARATION_ERRNO
115 #ifdef NEED_DECLARATION_FFS
116 extern int ffs (int);
118 #ifdef NEED_DECLARATION_FREE
121 #ifdef NEED_DECLARATION_MALLOC
122 extern void *malloc ();
123 extern void *realloc ();
125 #ifdef NEED_DECLARATION_STRSTR
126 extern char *strstr ();
129 #if !HAVE_DECL_MEMPCPY
130 void *mempcpy(void *, const void *, size_t);
133 #if !HAVE_DECL_VSNPRINTF
134 extern int vsnprintf(char *, size_t, const char *, va_list);
137 /* This is needed for VMS. */
138 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
139 #define unlink remove
142 /* Hack to make "gcc -Wall" not complain about obstack macros. */
143 #if !defined (memcpy) && !defined (bcopy)
144 #define bcopy(src,dest,size) memcpy (dest, src, size)
147 /* Make Saber happier on obstack.h. */
150 #define __PTR_TO_INT(P) ((int) (P))
152 #define __INT_TO_PTR(P) ((char *) (P))
156 #define __LINE__ "unknown"
157 #endif /* __LINE__ */
160 #define __FILE__ "unknown"
161 #endif /* __FILE__ */
164 #ifdef USE_BINARY_FOPEN
165 #include "fopen-bin.h"
167 #include "fopen-same.h"
172 #define EXIT_SUCCESS 0
173 #define EXIT_FAILURE 1
180 #define obstack_chunk_alloc xmalloc
181 #define obstack_chunk_free xfree
187 #define BAD_CASE(val) \
189 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
190 (long) val, __LINE__, __FILE__); \
195 /* These are assembler-wide concepts */
197 extern bfd *stdoutput;
198 typedef bfd_vma addressT;
199 typedef bfd_signed_vma offsetT;
201 /* Type of symbol value, etc. For use in prototypes. */
202 typedef addressT valueT;
206 #define COMMON /* Declare our COMMONs storage here. */
208 #define COMMON extern /* Our commons live elsewhere. */
211 /* COMMON now defined */
213 #ifndef ENABLE_CHECKING
214 #define ENABLE_CHECKING 0
217 #if ENABLE_CHECKING || defined (DEBUG)
219 #define know(p) gas_assert(p) /* Verify our assumptions! */
220 #endif /* not yet defined */
222 #define know(p) do {} while (0) /* know() checks are no-op.ed */
227 /* Supplies sanitised buffers to read.c.
228 Also understands printing line-number part of error messages. */
230 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
232 typedef asection *segT;
233 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \
234 && (SEG) != undefined_section \
235 && (SEG) != reg_section \
236 && (SEG) != expr_section)
239 /* What subseg we are accessing now? */
240 COMMON subsegT now_subseg;
242 /* Segment our instructions emit to. */
245 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
247 extern segT reg_section, expr_section;
248 /* Shouldn't these be eliminated someday? */
249 extern segT text_section, data_section, bss_section;
250 #define absolute_section bfd_abs_section_ptr
251 #define undefined_section bfd_und_section_ptr
255 /* Dummy frag used by listing code. */
258 /* Variable chars to be repeated fr_offset times.
259 Fr_symbol unused. Used with fr_offset == 0 for a
260 constant length frag. */
263 /* Align. The fr_offset field holds the power of 2 to which to
264 align. The fr_var field holds the number of characters in the
265 fill pattern. The fr_subtype field holds the maximum number of
266 bytes to skip when aligning, or 0 if there is no maximum. */
269 /* Align code. The fr_offset field holds the power of 2 to which
270 to align. This type is only generated by machine specific
271 code, which is normally responsible for handling the fill
272 pattern. The fr_subtype field holds the maximum number of
273 bytes to skip when aligning, or 0 if there is no maximum. */
276 /* Test for alignment. Like rs_align, but used by several targets
277 to warn if data is not properly aligned. */
280 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
284 #ifndef WORKING_DOT_WORD
289 /* Machine specific relaxable (or similarly alterable) instruction. */
290 rs_machine_dependent,
292 /* .space directive with expression operand that needs to be computed
293 later. Similar to rs_org, but different.
295 1 variable char: fill character */
298 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
299 unsigned, 1 for signed. */
302 /* Exception frame information which we may be able to optimize. */
305 /* Cross-fragment dwarf2 line number optimization. */
309 typedef enum _relax_state relax_stateT;
311 /* This type is used in prototypes, so it can't be a type that will be
312 widened for argument passing. */
313 typedef unsigned int relax_substateT;
315 /* Enough bits for address, but still an integer type.
316 Could be a problem, cross-assembling for 64-bit machines. */
317 typedef addressT relax_addressT;
321 /* Forward reach. Signed number. > 0. */
323 /* Backward reach. Signed number. < 0. */
324 offsetT rlx_backward;
326 /* Bytes length of this address. */
327 unsigned char rlx_length;
329 /* Next longer relax-state. 0 means there is no 'next' relax-state. */
330 relax_substateT rlx_more;
333 typedef struct relax_type relax_typeS;
335 /* main program "as.c" (command arguments etc). */
337 COMMON unsigned char flag_no_comments; /* -f */
338 COMMON unsigned char flag_debug; /* -D */
339 COMMON unsigned char flag_signed_overflow_ok; /* -J */
340 #ifndef WORKING_DOT_WORD
341 COMMON unsigned char flag_warn_displacement; /* -K */
344 /* True if local symbols should be retained. */
345 COMMON int flag_keep_locals; /* -L */
347 /* True if we are assembling in MRI mode. */
350 /* Should the data section be made read-only and appended to the text
352 COMMON unsigned char flag_readonly_data_in_text; /* -R */
354 /* True if warnings should be inhibited. */
355 COMMON int flag_no_warnings; /* -W */
357 /* True if warnings count as errors. */
358 COMMON int flag_fatal_warnings; /* --fatal-warnings */
360 /* True if we should attempt to generate output even if non-fatal errors
362 COMMON unsigned char flag_always_generate_output; /* -Z */
364 /* This is true if the assembler should output time and space usage. */
365 COMMON unsigned char flag_print_statistics;
367 /* True if local absolute symbols are to be stripped. */
368 COMMON int flag_strip_local_absolute;
370 /* True if we should generate a traditional format object file. */
371 COMMON int flag_traditional_format;
373 /* Type of compressed debug sections we should generate. */
374 COMMON enum compressed_debug_section_type flag_compress_debug;
376 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
377 COMMON int flag_execstack;
379 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
380 COMMON int flag_noexecstack;
382 /* name of emitted object file */
383 COMMON char *out_file_name;
385 /* name of file defining extensions to the basic instruction set */
386 COMMON char *insttbl_file_name;
388 /* TRUE if we need a second pass. */
389 COMMON int need_pass_2;
391 /* TRUE if we should do no relaxing, and
392 leave lots of padding. */
393 COMMON int linkrelax;
395 /* TRUE if we should produce a listing. */
398 /* Type of debugging information we should generate. We currently support
399 stabs, ECOFF, and DWARF2.
401 NOTE! This means debug information about the assembly source code itself
402 and _not_ about possible debug information from a high-level language.
403 This is especially relevant to DWARF2, since the compiler may emit line
404 number directives that the assembler resolves. */
416 extern enum debug_info_type debug_type;
417 extern int use_gnu_debug_info_extensions;
418 COMMON bfd_boolean flag_dwarf_sections;
420 /* Maximum level of macro nesting. */
421 extern int max_macro_nest;
423 /* Verbosity level. */
426 /* Obstack chunk size. Keep large for efficient space use, make small to
427 increase malloc calls for monitoring memory allocation. */
428 extern int chunksize;
432 /* assembler mnemonic, lower case, no '.' */
433 const char *poc_name;
435 void (*poc_handler) (int);
436 /* Value to pass to handler */
440 typedef struct _pseudo_type pseudo_typeS;
442 #if (__GNUC__ >= 2) && !defined(VMS)
443 /* for use with -Wformat */
445 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6
446 /* Support for double underscores in attribute names was added in gcc
447 2.6, so avoid them if we are using an earlier version. */
448 #define __printf__ printf
449 #define __format__ format
452 #define PRINTF_LIKE(FCN) \
453 void FCN (const char *format, ...) \
454 __attribute__ ((__format__ (__printf__, 1, 2)))
455 #define PRINTF_WHERE_LIKE(FCN) \
456 void FCN (char *file, unsigned int line, const char *format, ...) \
457 __attribute__ ((__format__ (__printf__, 3, 4)))
459 #else /* __GNUC__ < 2 || defined(VMS) */
461 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
462 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \
464 const char *format, ...)
466 #endif /* __GNUC__ < 2 || defined(VMS) */
468 PRINTF_LIKE (as_bad);
469 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
470 PRINTF_LIKE (as_tsktsk);
471 PRINTF_LIKE (as_warn);
472 PRINTF_WHERE_LIKE (as_bad_where);
473 PRINTF_WHERE_LIKE (as_warn_where);
475 void as_assert (const char *, int, const char *);
476 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
477 void sprint_value (char *, addressT);
478 int had_errors (void);
479 int had_warnings (void);
480 void as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
481 void as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
482 void print_version_id (void);
483 char * app_push (void);
484 char * atof_ieee (char *, int, LITTLENUM_TYPE *);
485 char * ieee_md_atof (int, char *, int *, bfd_boolean);
486 char * vax_md_atof (int, char *, int *);
487 char * input_scrub_include_file (char *, char *);
488 void input_scrub_insert_line (const char *);
489 void input_scrub_insert_file (char *);
490 char * input_scrub_new_file (char *);
491 char * input_scrub_next_buffer (char **bufp);
492 size_t do_scrub_chars (size_t (*get) (char *, size_t), char *, size_t);
493 int gen_to_words (LITTLENUM_TYPE *, int, long);
495 int ignore_input (void);
496 void cond_finish_check (int);
497 void cond_exit_macro (int);
498 int seen_at_least_1_file (void);
499 void app_pop (char *);
500 void as_where (char **, unsigned int *);
501 void bump_line_counters (void);
502 void do_scrub_begin (int);
503 void input_scrub_begin (void);
504 void input_scrub_close (void);
505 void input_scrub_end (void);
506 int new_logical_line (char *, int);
507 int new_logical_line_flags (char *, int, int);
508 void subsegs_begin (void);
509 void subseg_change (segT, int);
510 segT subseg_new (const char *, subsegT);
511 segT subseg_force_new (const char *, subsegT);
512 void subseg_set (segT, subsegT);
513 int subseg_text_p (segT);
514 int seg_not_empty_p (segT);
515 void start_dependencies (char *);
516 void register_dependency (char *);
517 void print_dependencies (void);
518 segT subseg_get (const char *, int);
520 const char *remap_debug_filename (const char *);
521 void add_debug_prefix_map (const char *);
525 typedef struct symbol symbolS;
526 typedef struct frag fragS;
529 valueT add_to_literal_pool (symbolS *, valueT, segT, int);
531 int check_eh_frame (struct expressionS *, unsigned int *);
532 int eh_frame_estimate_size_before_relax (fragS *);
533 int eh_frame_relax_frag (fragS *);
534 void eh_frame_convert_frag (fragS *);
535 int generic_force_reloc (struct fix *);
537 #include "expr.h" /* Before targ-*.h */
539 /* This one starts the chain of target dependant headers. */
540 #include "targ-env.h"
543 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
561 #ifdef USE_EMULATIONS
567 extern int enable_h_tick_hex;
571 /* True if we are assembling in m68k MRI mode. */
572 COMMON int flag_m68k_mri;
573 #define DOLLAR_AMBIGU flag_m68k_mri
575 #define flag_m68k_mri 0
579 COMMON int warn_comment;
580 COMMON unsigned int found_comment;
581 COMMON char * found_comment_file;
584 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
585 /* If .size directive failure should be error or warning. */
588 size_check_error = 0,
593 /* If section name substitution sequences should be honored */
594 COMMON int flag_sectname_subst;
597 #ifndef DOLLAR_AMBIGU
598 #define DOLLAR_AMBIGU 0
601 #ifndef NUMBERS_WITH_SUFFIX
602 #define NUMBERS_WITH_SUFFIX 0
605 #ifndef LOCAL_LABELS_DOLLAR
606 #define LOCAL_LABELS_DOLLAR 0
609 #ifndef LOCAL_LABELS_FB
610 #define LOCAL_LABELS_FB 0
613 #ifndef LABELS_WITHOUT_COLONS
614 #define LABELS_WITHOUT_COLONS 0
617 #ifndef NO_PSEUDO_DOT
618 #define NO_PSEUDO_DOT 0
621 #ifndef TEXT_SECTION_NAME
622 #define TEXT_SECTION_NAME ".text"
623 #define DATA_SECTION_NAME ".data"
624 #define BSS_SECTION_NAME ".bss"
627 #ifndef OCTETS_PER_BYTE_POWER
628 #define OCTETS_PER_BYTE_POWER 0
630 #ifndef OCTETS_PER_BYTE
631 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
633 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
634 #error "Octets per byte conflicts with its power-of-two definition!"