1 /* as.h - global header file
2 Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
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 2, or (at your option)
13 GAS 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.
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, 59 Temple Place - Suite 330, Boston, MA
25 /* I think this stuff is largely out of date. xoxorich.
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.
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
37 * If TEST is #defined, then we are testing a module: #define COMMON as "".
43 /* This is the code recommended in the autoconf documentation, almost
44 verbatim. If it doesn't work for you, let me know, and notify
45 djm@gnu.ai.mit.edu as well. */
46 /* Added void* version for STDC case. This is to be compatible with
47 the declaration in bison.simple, used for m68k operand parsing.
49 /* Force void* decl for hpux. This is what Bison uses. --KR 1995.08.16 */
56 /* Indented so that pre-ansi C compilers will ignore it, rather than
57 choke on it. Some versions of AIX require this to be the first
61 # ifndef alloca /* predefined by HP cc +Olibcalls */
62 # if !defined (__STDC__) && !defined (__hpux)
63 extern char *alloca ();
65 extern void *alloca ();
66 # endif /* __STDC__, __hpux */
69 # endif /* HAVE_ALLOCA_H */
72 /* Now, tend to the rest of the configuration. */
74 /* System include files first... */
89 #ifdef HAVE_SYS_TYPES_H
90 /* for size_t, pid_t */
91 #include <sys/types.h>
95 /* The first getopt value for machine-independent long options.
96 150 isn't special; it's just an arbitrary non-ASCII char value. */
97 #define OPTION_STD_BASE 150
98 /* The first getopt value for machine-dependent long options.
99 190 gives the standard options room to grow. */
100 #define OPTION_MD_BASE 190
105 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
106 #define __PRETTY_FUNCTION__ ((char*)0)
110 /* Handle lossage with assert.h. */
111 #ifndef BROKEN_ASSERT
113 #else /* BROKEN_ASSERT */
115 #define assert(p) ((p) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))
117 #define assert(p) ((p), 0)
119 #endif /* BROKEN_ASSERT */
123 #define assert(P) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))
125 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
129 /* Now GNU header files... */
130 #include "ansidecl.h"
134 #include "libiberty.h"
136 /* Define the standard progress macros. */
137 #include "progress.h"
139 /* This doesn't get taken care of anywhere. */
140 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */
141 #if !defined (__GNUC__) && !defined (inline)
144 #endif /* !__MWERKS__ */
146 /* Other stuff from config.h. */
147 #ifdef NEED_DECLARATION_STRSTR
148 extern char *strstr ();
150 #ifdef NEED_DECLARATION_MALLOC
151 extern PTR
malloc ();
152 extern PTR
realloc ();
154 #ifdef NEED_DECLARATION_FREE
157 #ifdef NEED_DECLARATION_ERRNO
160 #ifdef NEED_DECLARATION_ENVIRON
161 extern char **environ
;
164 /* This is needed for VMS. */
165 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
166 #define unlink remove
169 /* Hack to make "gcc -Wall" not complain about obstack macros. */
170 #if !defined (memcpy) && !defined (bcopy)
171 #define bcopy(src,dest,size) memcpy (dest, src, size)
174 /* Make Saber happier on obstack.h. */
177 #define __PTR_TO_INT(P) ((int) (P))
179 #define __INT_TO_PTR(P) ((char *) (P))
183 #define __LINE__ "unknown"
184 #endif /* __LINE__ */
187 #define __FILE__ "unknown"
188 #endif /* __FILE__ */
191 #if defined GO32 || defined __MINGW32__
192 #include "fopen-bin.h"
194 #include "fopen-same.h"
199 #define EXIT_SUCCESS 0
200 #define EXIT_FAILURE 1
207 #define obstack_chunk_alloc xmalloc
208 #define obstack_chunk_free xfree
214 #define BAD_CASE(val) \
216 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
217 (long) val, __LINE__, __FILE__); \
222 /* These are assembler-wide concepts */
225 extern bfd
*stdoutput
;
226 typedef bfd_vma addressT
;
227 typedef bfd_signed_vma offsetT
;
229 typedef unsigned long addressT
;
230 typedef long offsetT
;
233 /* Type of symbol value, etc. For use in prototypes. */
234 typedef addressT valueT
;
238 #define COMMON /* declare our COMMONs storage here. */
240 #define COMMON extern /* our commons live elsewhere */
243 /* COMMON now defined */
247 #define know(p) assert(p) /* Verify our assumptions! */
248 #endif /* not yet defined */
250 #define know(p) /* know() checks are no-op.ed */
255 /* Supplies sanitised buffers to read.c.
256 Also understands printing line-number part of error messages. */
258 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
260 #ifndef BFD_ASSEMBLER
264 #define N_SEGMENTS 40
265 #define SEG_NORMAL(x) ((x) >= SEG_E0 && (x) <= SEG_E39)
266 #define SEG_LIST SEG_E0,SEG_E1,SEG_E2,SEG_E3,SEG_E4,SEG_E5,SEG_E6,SEG_E7,SEG_E8,SEG_E9,\
267 SEG_E10,SEG_E11,SEG_E12,SEG_E13,SEG_E14,SEG_E15,SEG_E16,SEG_E17,SEG_E18,SEG_E19,\
268 SEG_E20,SEG_E21,SEG_E22,SEG_E23,SEG_E24,SEG_E25,SEG_E26,SEG_E27,SEG_E28,SEG_E29,\
269 SEG_E30,SEG_E31,SEG_E32,SEG_E33,SEG_E34,SEG_E35,SEG_E36,SEG_E37,SEG_E38,SEG_E39
270 #define SEG_TEXT SEG_E0
271 #define SEG_DATA SEG_E1
272 #define SEG_BSS SEG_E2
273 #define SEG_LAST SEG_E39
276 #define SEG_NORMAL(x) ((x) == SEG_TEXT || (x) == SEG_DATA || (x) == SEG_BSS)
277 #define SEG_LIST SEG_TEXT,SEG_DATA,SEG_BSS
284 SEG_GOOF
, /* Only happens if AS has a logic error. */
285 /* Invented so we don't crash printing */
286 /* error message involving weird segment. */
287 SEG_EXPR
, /* Intermediate expression values. */
288 SEG_DEBUG
, /* Debug segment */
289 SEG_NTV
, /* Transfert vector preload segment */
290 SEG_PTV
, /* Transfert vector postload segment */
291 SEG_REGISTER
/* Mythical: a register-valued expression */
294 #define SEG_MAXIMUM_ORDINAL (SEG_REGISTER)
296 typedef asection
*segT
;
297 #define SEG_NORMAL(SEG) ((SEG) != absolute_section \
298 && (SEG) != undefined_section \
299 && (SEG) != reg_section \
300 && (SEG) != expr_section)
304 /* What subseg we are accessing now? */
305 COMMON subsegT now_subseg
;
307 /* Segment our instructions emit to. */
311 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
313 extern char const *const seg_name
[];
314 #define segment_name(SEG) seg_name[(int) (SEG)]
317 #ifndef BFD_ASSEMBLER
318 extern int section_alignment
[];
322 extern segT reg_section
, expr_section
;
323 /* Shouldn't these be eliminated someday? */
324 extern segT text_section
, data_section
, bss_section
;
325 #define absolute_section bfd_abs_section_ptr
326 #define undefined_section bfd_und_section_ptr
328 #define reg_section SEG_REGISTER
329 #define expr_section SEG_EXPR
330 #define text_section SEG_TEXT
331 #define data_section SEG_DATA
332 #define bss_section SEG_BSS
333 #define absolute_section SEG_ABSOLUTE
334 #define undefined_section SEG_UNKNOWN
340 /* Variable chars to be repeated fr_offset times.
341 Fr_symbol unused. Used with fr_offset == 0 for a
342 constant length frag. */
345 /* Align. The fr_offset field holds the power of 2 to which to
346 align. The fr_var field holds the number of characters in the
347 fill pattern. The fr_subtype field holds the maximum number of
348 bytes to skip when aligning, or 0 if there is no maximum. */
351 /* Align code. The fr_offset field holds the power of 2 to which
352 to align. This type is only generated by machine specific
353 code, which is normally responsible for handling the fill
354 pattern. The fr_subtype field holds the maximum number of
355 bytes to skip when aligning, or 0 if there is no maximum. */
358 /* Test for alignment. Like rs_align, but used by several targets
359 to warn if data is not properly aligned. */
362 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
366 #ifndef WORKING_DOT_WORD
371 /* machine-specific relaxable (or similarly alterable) instruction */
372 rs_machine_dependent
,
374 /* .space directive with expression operand that needs to be computed
375 later. Similar to rs_org, but different.
377 1 variable char: fill character */
380 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
381 unsigned, 1 for signed. */
384 /* Exception frame information which we may be able to optimize. */
387 /* Cross-fragment dwarf2 line number optimization. */
391 typedef enum _relax_state relax_stateT
;
393 /* This type is used in prototypes, so it can't be a type that will be
394 widened for argument passing. */
395 typedef unsigned int relax_substateT
;
397 /* Enough bits for address, but still an integer type.
398 Could be a problem, cross-assembling for 64-bit machines. */
399 typedef addressT relax_addressT
;
401 /* main program "as.c" (command arguments etc) */
403 COMMON
unsigned char flag_no_comments
; /* -f */
404 COMMON
unsigned char flag_debug
; /* -D */
405 COMMON
unsigned char flag_signed_overflow_ok
; /* -J */
406 #ifndef WORKING_DOT_WORD
407 COMMON
unsigned char flag_warn_displacement
; /* -K */
410 /* True if local symbols should be retained. */
411 COMMON
int flag_keep_locals
; /* -L */
413 /* True if we are assembling in MRI mode. */
416 /* Should the data section be made read-only and appended to the text
418 COMMON
unsigned char flag_readonly_data_in_text
; /* -R */
420 /* True if warnings should be inhibited. */
421 COMMON
int flag_no_warnings
; /* -W */
423 /* True if warnings count as errors. */
424 COMMON
int flag_fatal_warnings
; /* --fatal-warnings */
426 /* True if we should attempt to generate output even if non-fatal errors
428 COMMON
unsigned char flag_always_generate_output
; /* -Z */
430 /* This is true if the assembler should output time and space usage. */
431 COMMON
unsigned char flag_print_statistics
;
433 /* True if local absolute symbols are to be stripped. */
434 COMMON
int flag_strip_local_absolute
;
436 /* True if we should generate a traditional format object file. */
437 COMMON
int flag_traditional_format
;
439 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
440 COMMON
int flag_execstack
;
442 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
443 COMMON
int flag_noexecstack
;
445 /* name of emitted object file */
446 COMMON
char *out_file_name
;
448 /* name of file defining extensions to the basic instruction set */
449 COMMON
char *insttbl_file_name
;
451 /* TRUE if we need a second pass. */
452 COMMON
int need_pass_2
;
454 /* TRUE if we should do no relaxing, and
455 leave lots of padding. */
456 COMMON
int linkrelax
;
458 /* TRUE if we should produce a listing. */
461 /* Type of debugging information we should generate. We currently support
462 stabs, ECOFF, and DWARF2.
464 NOTE! This means debug information about the assembly source code itself
465 and _not_ about possible debug information from a high-level language.
466 This is especially relevant to DWARF2, since the compiler may emit line
467 number directives that the assembler resolves. */
469 enum debug_info_type
{
478 extern enum debug_info_type debug_type
;
479 extern int use_gnu_debug_info_extensions
;
481 /* Maximum level of macro nesting. */
482 extern int max_macro_nest
;
484 /* Verbosity level. */
487 /* Obstack chunk size. Keep large for efficient space use, make small to
488 increase malloc calls for monitoring memory allocation. */
489 extern int chunksize
;
491 struct _pseudo_type
{
492 /* assembler mnemonic, lower case, no '.' */
493 const char *poc_name
;
495 void (*poc_handler
) (int);
496 /* Value to pass to handler */
500 typedef struct _pseudo_type pseudo_typeS
;
502 /* Prefer varargs for non-ANSI compiler, since some will barf if the
503 ellipsis definition is used with a no-arguments declaration. */
504 #if defined (HAVE_VARARGS_H) && !defined (__STDC__)
508 #if defined (HAVE_STDARG_H)
511 #if !defined (USE_STDARG) && defined (HAVE_VARARGS_H)
516 #if (__GNUC__ >= 2) && !defined(VMS)
517 /* for use with -Wformat */
519 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6
520 /* Support for double underscores in attribute names was added in gcc
521 2.6, so avoid them if we are using an earlier version. */
522 #define __printf__ printf
523 #define __format__ format
526 #define PRINTF_LIKE(FCN) \
527 void FCN (const char *format, ...) \
528 __attribute__ ((__format__ (__printf__, 1, 2)))
529 #define PRINTF_WHERE_LIKE(FCN) \
530 void FCN (char *file, unsigned int line, const char *format, ...) \
531 __attribute__ ((__format__ (__printf__, 3, 4)))
533 #else /* __GNUC__ < 2 || defined(VMS) */
535 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
536 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \
538 const char *format, ...)
540 #endif /* __GNUC__ < 2 || defined(VMS) */
542 #else /* ! USE_STDARG */
544 #define PRINTF_LIKE(FCN) void FCN ()
545 #define PRINTF_WHERE_LIKE(FCN) void FCN ()
547 #endif /* ! USE_STDARG */
549 PRINTF_LIKE (as_bad
);
550 PRINTF_LIKE (as_fatal
) ATTRIBUTE_NORETURN
;
551 PRINTF_LIKE (as_tsktsk
);
552 PRINTF_LIKE (as_warn
);
553 PRINTF_WHERE_LIKE (as_bad_where
);
554 PRINTF_WHERE_LIKE (as_warn_where
);
556 void as_assert (const char *, int, const char *);
557 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN
;
559 void fprint_value (FILE *file
, addressT value
);
560 void sprint_value (char *buf
, addressT value
);
562 int had_errors (void);
563 int had_warnings (void);
565 void print_version_id (void);
566 char *app_push (void);
567 char *atof_ieee (char *str
, int what_kind
, LITTLENUM_TYPE
* words
);
568 char *input_scrub_include_file (char *filename
, char *position
);
569 extern void input_scrub_insert_line (const char *line
);
570 extern void input_scrub_insert_file (char *path
);
571 char *input_scrub_new_file (char *filename
);
572 char *input_scrub_next_buffer (char **bufp
);
573 int do_scrub_chars (int (*get
) (char *, int), char *to
, int tolen
);
574 int gen_to_words (LITTLENUM_TYPE
* words
, int precision
,
577 int ignore_input (void);
578 void cond_finish_check (int);
579 void cond_exit_macro (int);
580 int seen_at_least_1_file (void);
581 void app_pop (char *arg
);
582 void as_howmuch (FILE * stream
);
583 void as_perror (const char *gripe
, const char *filename
);
584 void as_where (char **namep
, unsigned int *linep
);
585 void bump_line_counters (void);
586 void do_scrub_begin (int);
587 void input_scrub_begin (void);
588 void input_scrub_close (void);
589 void input_scrub_end (void);
590 int new_logical_line (char *fname
, int line_number
);
591 void subsegs_begin (void);
592 void subseg_change (segT seg
, int subseg
);
593 segT
subseg_new (const char *name
, subsegT subseg
);
594 segT
subseg_force_new (const char *name
, subsegT subseg
);
595 void subseg_set (segT seg
, subsegT subseg
);
597 segT
subseg_get (const char *, int);
599 int subseg_text_p (segT
);
601 void start_dependencies (char *);
602 void register_dependency (char *);
603 void print_dependencies (void);
607 typedef struct symbol symbolS
;
609 typedef struct frag fragS
;
613 valueT
add_to_literal_pool (symbolS
*, valueT
, segT
, int);
616 int check_eh_frame (struct expressionS
*, unsigned int *);
617 int eh_frame_estimate_size_before_relax (fragS
*);
618 int eh_frame_relax_frag (fragS
*);
619 void eh_frame_convert_frag (fragS
*);
621 int generic_force_reloc (struct fix
*);
623 #include "expr.h" /* Before targ-*.h */
625 /* this one starts the chain of target dependant headers */
626 #include "targ-env.h"
629 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
647 #ifdef USE_EMULATIONS
653 /* True if we are assembling in m68k MRI mode. */
654 COMMON
int flag_m68k_mri
;
656 #define flag_m68k_mri 0
660 COMMON
int warn_comment
;
661 COMMON
unsigned int found_comment
;
662 COMMON
char *found_comment_file
;
665 #ifndef NUMBERS_WITH_SUFFIX
666 #define NUMBERS_WITH_SUFFIX 0
669 #ifndef LOCAL_LABELS_DOLLAR
670 #define LOCAL_LABELS_DOLLAR 0
673 #ifndef LOCAL_LABELS_FB
674 #define LOCAL_LABELS_FB 0
677 #ifndef LABELS_WITHOUT_COLONS
678 #define LABELS_WITHOUT_COLONS 0
681 #ifndef NO_PSEUDO_DOT
682 #define NO_PSEUDO_DOT 0
685 #ifndef TEXT_SECTION_NAME
686 #define TEXT_SECTION_NAME ".text"
687 #define DATA_SECTION_NAME ".data"
688 #define BSS_SECTION_NAME ".bss"
691 #ifndef OCTETS_PER_BYTE_POWER
692 #define OCTETS_PER_BYTE_POWER 0
694 #ifndef OCTETS_PER_BYTE
695 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
697 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
698 #error "Octets per byte conflicts with its power-of-two definition!"