1 /* 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.
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 3, or (at your option)
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.
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
25 /* I think this stuff is largely out of date.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 "". */
39 #include "alloca-conf.h"
41 /* Now, tend to the rest of the configuration. */
43 /* System include files first... */
58 #ifdef HAVE_SYS_TYPES_H
59 /* for size_t, pid_t */
60 #include <sys/types.h>
70 /* The first getopt value for machine-independent long options.
71 150 isn't special; it's just an arbitrary non-ASCII char value. */
72 #define OPTION_STD_BASE 150
73 /* The first getopt value for machine-dependent long options.
74 190 gives the standard options room to grow. */
75 #define OPTION_MD_BASE 190
80 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
81 #define __PRETTY_FUNCTION__ ((char *) NULL)
83 #define gas_assert(P) \
84 ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0)))
86 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
88 /* Now GNU header files... */
91 #include "libiberty.h"
93 /* Define the standard progress macros. */
96 /* This doesn't get taken care of anywhere. */
97 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */
98 #if !defined (__GNUC__) && !defined (inline)
101 #endif /* !__MWERKS__ */
103 /* Other stuff from config.h. */
104 #ifdef NEED_DECLARATION_ENVIRON
105 extern char **environ;
107 #ifdef NEED_DECLARATION_ERRNO
110 #ifdef NEED_DECLARATION_FFS
111 extern int ffs (int);
113 #ifdef NEED_DECLARATION_FREE
116 #ifdef NEED_DECLARATION_MALLOC
117 extern void *malloc ();
118 extern void *realloc ();
120 #ifdef NEED_DECLARATION_STRSTR
121 extern char *strstr ();
124 #if !HAVE_DECL_MEMPCPY
125 void *mempcpy(void *, const void *, size_t);
128 #if !HAVE_DECL_VSNPRINTF
129 extern int vsnprintf(char *, size_t, const char *, va_list);
132 /* This is needed for VMS. */
133 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
134 #define unlink remove
137 /* Hack to make "gcc -Wall" not complain about obstack macros. */
138 #if !defined (memcpy) && !defined (bcopy)
139 #define bcopy(src,dest,size) memcpy (dest, src, size)
142 /* Make Saber happier on obstack.h. */
145 #define __PTR_TO_INT(P) ((int) (P))
147 #define __INT_TO_PTR(P) ((char *) (P))
151 #define __LINE__ "unknown"
152 #endif /* __LINE__ */
155 #define __FILE__ "unknown"
156 #endif /* __FILE__ */
159 #ifdef USE_BINARY_FOPEN
160 #include "fopen-bin.h"
162 #include "fopen-same.h"
167 #define EXIT_SUCCESS 0
168 #define EXIT_FAILURE 1
175 #define obstack_chunk_alloc xmalloc
176 #define obstack_chunk_free xfree
182 #define BAD_CASE(val) \
184 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
185 (long) val, __LINE__, __FILE__); \
190 /* These are assembler-wide concepts */
192 extern bfd *stdoutput;
193 typedef bfd_vma addressT;
194 typedef bfd_signed_vma offsetT;
196 /* Type of symbol value, etc. For use in prototypes. */
197 typedef addressT valueT;
201 #define COMMON /* Declare our COMMONs storage here. */
203 #define COMMON extern /* Our commons live elsewhere. */
206 /* COMMON now defined */
208 #ifndef ENABLE_CHECKING
209 #define ENABLE_CHECKING 0
212 #if ENABLE_CHECKING || defined (DEBUG)
214 #define know(p) gas_assert(p) /* Verify our assumptions! */
215 #endif /* not yet defined */
217 #define know(p) do {} while (0) /* know() checks are no-op.ed */
222 /* Supplies sanitised buffers to read.c.
223 Also understands printing line-number part of error messages. */
225 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
227 typedef asection *segT;
228 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \
229 && (SEG) != undefined_section \
230 && (SEG) != reg_section \
231 && (SEG) != expr_section)
234 /* What subseg we are accessing now? */
235 COMMON subsegT now_subseg;
237 /* Segment our instructions emit to. */
240 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
242 extern segT reg_section, expr_section;
243 /* Shouldn't these be eliminated someday? */
244 extern segT text_section, data_section, bss_section;
245 #define absolute_section bfd_abs_section_ptr
246 #define undefined_section bfd_und_section_ptr
250 /* Dummy frag used by listing code. */
253 /* Variable chars to be repeated fr_offset times.
254 Fr_symbol unused. Used with fr_offset == 0 for a
255 constant length frag. */
258 /* Align. The fr_offset field holds the power of 2 to which to
259 align. The fr_var field holds the number of characters in the
260 fill pattern. The fr_subtype field holds the maximum number of
261 bytes to skip when aligning, or 0 if there is no maximum. */
264 /* Align code. The fr_offset field holds the power of 2 to which
265 to align. This type is only generated by machine specific
266 code, which is normally responsible for handling the fill
267 pattern. The fr_subtype field holds the maximum number of
268 bytes to skip when aligning, or 0 if there is no maximum. */
271 /* Test for alignment. Like rs_align, but used by several targets
272 to warn if data is not properly aligned. */
275 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
279 #ifndef WORKING_DOT_WORD
284 /* Machine specific relaxable (or similarly alterable) instruction. */
285 rs_machine_dependent,
287 /* .space directive with expression operand that needs to be computed
288 later. Similar to rs_org, but different.
290 1 variable char: fill character */
293 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
294 unsigned, 1 for signed. */
297 /* Exception frame information which we may be able to optimize. */
300 /* Cross-fragment dwarf2 line number optimization. */
304 typedef enum _relax_state relax_stateT;
306 /* This type is used in prototypes, so it can't be a type that will be
307 widened for argument passing. */
308 typedef unsigned int relax_substateT;
310 /* Enough bits for address, but still an integer type.
311 Could be a problem, cross-assembling for 64-bit machines. */
312 typedef addressT relax_addressT;
316 /* Forward reach. Signed number. > 0. */
318 /* Backward reach. Signed number. < 0. */
319 offsetT rlx_backward;
321 /* Bytes length of this address. */
322 unsigned char rlx_length;
324 /* Next longer relax-state. 0 means there is no 'next' relax-state. */
325 relax_substateT rlx_more;
328 typedef struct relax_type relax_typeS;
330 /* main program "as.c" (command arguments etc). */
332 COMMON unsigned char flag_no_comments; /* -f */
333 COMMON unsigned char flag_debug; /* -D */
334 COMMON unsigned char flag_signed_overflow_ok; /* -J */
335 #ifndef WORKING_DOT_WORD
336 COMMON unsigned char flag_warn_displacement; /* -K */
339 /* True if local symbols should be retained. */
340 COMMON int flag_keep_locals; /* -L */
342 /* True if we are assembling in MRI mode. */
345 /* Should the data section be made read-only and appended to the text
347 COMMON unsigned char flag_readonly_data_in_text; /* -R */
349 /* True if warnings should be inhibited. */
350 COMMON int flag_no_warnings; /* -W */
352 /* True if warnings count as errors. */
353 COMMON int flag_fatal_warnings; /* --fatal-warnings */
355 /* True if we should attempt to generate output even if non-fatal errors
357 COMMON unsigned char flag_always_generate_output; /* -Z */
359 /* This is true if the assembler should output time and space usage. */
360 COMMON unsigned char flag_print_statistics;
362 /* True if local absolute symbols are to be stripped. */
363 COMMON int flag_strip_local_absolute;
365 /* True if we should generate a traditional format object file. */
366 COMMON int flag_traditional_format;
368 /* TRUE if debug sections should be compressed. */
369 COMMON int flag_compress_debug;
371 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
372 COMMON int flag_execstack;
374 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
375 COMMON int flag_noexecstack;
377 /* name of emitted object file */
378 COMMON char *out_file_name;
380 /* name of file defining extensions to the basic instruction set */
381 COMMON char *insttbl_file_name;
383 /* TRUE if we need a second pass. */
384 COMMON int need_pass_2;
386 /* TRUE if we should do no relaxing, and
387 leave lots of padding. */
388 COMMON int linkrelax;
390 /* TRUE if we should produce a listing. */
393 /* Type of debugging information we should generate. We currently support
394 stabs, ECOFF, and DWARF2.
396 NOTE! This means debug information about the assembly source code itself
397 and _not_ about possible debug information from a high-level language.
398 This is especially relevant to DWARF2, since the compiler may emit line
399 number directives that the assembler resolves. */
411 extern enum debug_info_type debug_type;
412 extern int use_gnu_debug_info_extensions;
414 /* Maximum level of macro nesting. */
415 extern int max_macro_nest;
417 /* Verbosity level. */
420 /* Obstack chunk size. Keep large for efficient space use, make small to
421 increase malloc calls for monitoring memory allocation. */
422 extern int chunksize;
426 /* assembler mnemonic, lower case, no '.' */
427 const char *poc_name;
429 void (*poc_handler) (int);
430 /* Value to pass to handler */
434 typedef struct _pseudo_type pseudo_typeS;
436 #if (__GNUC__ >= 2) && !defined(VMS)
437 /* for use with -Wformat */
439 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6
440 /* Support for double underscores in attribute names was added in gcc
441 2.6, so avoid them if we are using an earlier version. */
442 #define __printf__ printf
443 #define __format__ format
446 #define PRINTF_LIKE(FCN) \
447 void FCN (const char *format, ...) \
448 __attribute__ ((__format__ (__printf__, 1, 2)))
449 #define PRINTF_WHERE_LIKE(FCN) \
450 void FCN (char *file, unsigned int line, const char *format, ...) \
451 __attribute__ ((__format__ (__printf__, 3, 4)))
453 #else /* __GNUC__ < 2 || defined(VMS) */
455 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
456 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \
458 const char *format, ...)
460 #endif /* __GNUC__ < 2 || defined(VMS) */
462 PRINTF_LIKE (as_bad);
463 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
464 PRINTF_LIKE (as_tsktsk);
465 PRINTF_LIKE (as_warn);
466 PRINTF_WHERE_LIKE (as_bad_where);
467 PRINTF_WHERE_LIKE (as_warn_where);
469 void as_assert (const char *, int, const char *);
470 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
471 void sprint_value (char *, addressT);
472 int had_errors (void);
473 int had_warnings (void);
474 void as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
475 void as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned);
476 void print_version_id (void);
477 char * app_push (void);
478 char * atof_ieee (char *, int, LITTLENUM_TYPE *);
479 char * ieee_md_atof (int, char *, int *, bfd_boolean);
480 char * vax_md_atof (int, char *, int *);
481 char * input_scrub_include_file (char *, char *);
482 void input_scrub_insert_line (const char *);
483 void input_scrub_insert_file (char *);
484 char * input_scrub_new_file (char *);
485 char * input_scrub_next_buffer (char **bufp);
486 int do_scrub_chars (int (*get) (char *, int), char *, int);
487 int gen_to_words (LITTLENUM_TYPE *, int, long);
489 int ignore_input (void);
490 void cond_finish_check (int);
491 void cond_exit_macro (int);
492 int seen_at_least_1_file (void);
493 void app_pop (char *);
494 void as_where (char **, unsigned int *);
495 void bump_line_counters (void);
496 void do_scrub_begin (int);
497 void input_scrub_begin (void);
498 void input_scrub_close (void);
499 void input_scrub_end (void);
500 int new_logical_line (char *, int);
501 int new_logical_line_flags (char *, int, int);
502 void subsegs_begin (void);
503 void subseg_change (segT, int);
504 segT subseg_new (const char *, subsegT);
505 segT subseg_force_new (const char *, subsegT);
506 void subseg_set (segT, subsegT);
507 int subseg_text_p (segT);
508 int seg_not_empty_p (segT);
509 void start_dependencies (char *);
510 void register_dependency (char *);
511 void print_dependencies (void);
512 segT subseg_get (const char *, int);
514 const char *remap_debug_filename (const char *);
515 void add_debug_prefix_map (const char *);
519 typedef struct symbol symbolS;
520 typedef struct frag fragS;
523 valueT add_to_literal_pool (symbolS *, valueT, segT, int);
525 int check_eh_frame (struct expressionS *, unsigned int *);
526 int eh_frame_estimate_size_before_relax (fragS *);
527 int eh_frame_relax_frag (fragS *);
528 void eh_frame_convert_frag (fragS *);
529 int generic_force_reloc (struct fix *);
531 #include "expr.h" /* Before targ-*.h */
533 /* This one starts the chain of target dependant headers. */
534 #include "targ-env.h"
537 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
555 #ifdef USE_EMULATIONS
561 extern int enable_h_tick_hex;
565 /* True if we are assembling in m68k MRI mode. */
566 COMMON int flag_m68k_mri;
567 #define DOLLAR_AMBIGU flag_m68k_mri
569 #define flag_m68k_mri 0
573 COMMON int warn_comment;
574 COMMON unsigned int found_comment;
575 COMMON char * found_comment_file;
578 #ifndef DOLLAR_AMBIGU
579 #define DOLLAR_AMBIGU 0
582 #ifndef NUMBERS_WITH_SUFFIX
583 #define NUMBERS_WITH_SUFFIX 0
586 #ifndef LOCAL_LABELS_DOLLAR
587 #define LOCAL_LABELS_DOLLAR 0
590 #ifndef LOCAL_LABELS_FB
591 #define LOCAL_LABELS_FB 0
594 #ifndef LABELS_WITHOUT_COLONS
595 #define LABELS_WITHOUT_COLONS 0
598 #ifndef NO_PSEUDO_DOT
599 #define NO_PSEUDO_DOT 0
602 #ifndef TEXT_SECTION_NAME
603 #define TEXT_SECTION_NAME ".text"
604 #define DATA_SECTION_NAME ".data"
605 #define BSS_SECTION_NAME ".bss"
608 #ifndef OCTETS_PER_BYTE_POWER
609 #define OCTETS_PER_BYTE_POWER 0
611 #ifndef OCTETS_PER_BYTE
612 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
614 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
615 #error "Octets per byte conflicts with its power-of-two definition!"