1 /* as.h - global header file
2 Copyright (C) 1987-2019 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23 /* I think this stuff is largely out of date.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.
79 290 gives the standard options room to grow. */
80 #define OPTION_MD_BASE 290
85 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
86 #define __PRETTY_FUNCTION__ ((char *) NULL)
88 #define gas_assert(P) ((void) ((P) ? 0 : (abort (), 0)))
90 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
92 /* Now GNU header files... */
95 #include "libiberty.h"
97 /* Define the standard progress macros. */
100 /* Other stuff from config.h. */
101 #ifdef NEED_DECLARATION_ENVIRON
102 extern char **environ;
104 #ifdef NEED_DECLARATION_ERRNO
107 #ifdef NEED_DECLARATION_FFS
108 extern int ffs (int);
110 #ifdef NEED_DECLARATION_FREE
113 #ifdef NEED_DECLARATION_MALLOC
114 extern void *malloc ();
115 extern void *realloc ();
117 #ifdef NEED_DECLARATION_STRSTR
118 extern char *strstr ();
121 #if !HAVE_DECL_MEMPCPY
122 void *mempcpy(void *, const void *, size_t);
125 #if !HAVE_DECL_VSNPRINTF
126 extern int vsnprintf(char *, size_t, const char *, va_list);
129 /* This is needed for VMS. */
130 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
131 #define unlink remove
134 /* Hack to make "gcc -Wall" not complain about obstack macros. */
135 #if !defined (memcpy) && !defined (bcopy)
136 #define bcopy(src,dest,size) memcpy (dest, src, size)
140 #define __LINE__ "unknown"
141 #endif /* __LINE__ */
144 #define __FILE__ "unknown"
145 #endif /* __FILE__ */
148 #ifdef USE_BINARY_FOPEN
149 #include "fopen-bin.h"
151 #include "fopen-same.h"
156 #define EXIT_SUCCESS 0
157 #define EXIT_FAILURE 1
164 #define obstack_chunk_alloc xmalloc
165 #define obstack_chunk_free xfree
171 #define BAD_CASE(val) \
173 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
174 (long) val, __LINE__, __FILE__); \
179 /* These are assembler-wide concepts */
181 extern bfd *stdoutput;
182 typedef bfd_vma addressT;
183 typedef bfd_signed_vma offsetT;
185 /* Type of symbol value, etc. For use in prototypes. */
186 typedef addressT valueT;
190 #define COMMON /* Declare our COMMONs storage here. */
192 #define COMMON extern /* Our commons live elsewhere. */
195 /* COMMON now defined */
197 #ifndef ENABLE_CHECKING
198 #define ENABLE_CHECKING 0
201 #if ENABLE_CHECKING || defined (DEBUG)
203 #define know(p) gas_assert(p) /* Verify our assumptions! */
204 #endif /* not yet defined */
206 #define know(p) do {} while (0) /* know() checks are no-op.ed */
211 /* Supplies sanitised buffers to read.c.
212 Also understands printing line-number part of error messages. */
214 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
216 typedef asection *segT;
217 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \
218 && (SEG) != undefined_section \
219 && (SEG) != reg_section \
220 && (SEG) != expr_section)
223 /* What subseg we are accessing now? */
224 COMMON subsegT now_subseg;
226 /* Segment our instructions emit to. */
229 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
231 extern segT reg_section, expr_section;
232 /* Shouldn't these be eliminated someday? */
233 extern segT text_section, data_section, bss_section;
234 #define absolute_section bfd_abs_section_ptr
235 #define undefined_section bfd_und_section_ptr
239 /* Dummy frag used by listing code. */
242 /* Variable chars to be repeated fr_offset times.
243 Fr_symbol unused. Used with fr_offset == 0 for a
244 constant length frag. */
247 /* Align. The fr_offset field holds the power of 2 to which to
248 align. The fr_var field holds the number of characters in the
249 fill pattern. The fr_subtype field holds the maximum number of
250 bytes to skip when aligning, or 0 if there is no maximum. */
253 /* Align code. The fr_offset field holds the power of 2 to which
254 to align. This type is only generated by machine specific
255 code, which is normally responsible for handling the fill
256 pattern. The fr_subtype field holds the maximum number of
257 bytes to skip when aligning, or 0 if there is no maximum. */
260 /* Test for alignment. Like rs_align, but used by several targets
261 to warn if data is not properly aligned. */
264 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
268 #ifndef WORKING_DOT_WORD
273 /* Machine specific relaxable (or similarly alterable) instruction. */
274 rs_machine_dependent,
276 /* .space directive with expression operand that needs to be computed
277 later. Similar to rs_org, but different.
279 1 variable char: fill character */
282 /* .nop directive with expression operand that needs to be computed
283 later. Similar to rs_space, but different. It fills with no-op
286 1 constant byte: no-op fill control byte. */
289 /* Similar to rs_fill. It is used to implement .nop directive . */
292 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
293 unsigned, 1 for signed. */
296 /* Exception frame information which we may be able to optimize. */
299 /* Cross-fragment dwarf2 line number optimization. */
303 typedef enum _relax_state relax_stateT;
305 /* This type is used in prototypes, so it can't be a type that will be
306 widened for argument passing. */
307 typedef unsigned int relax_substateT;
309 /* Enough bits for address, but still an integer type.
310 Could be a problem, cross-assembling for 64-bit machines. */
311 typedef addressT relax_addressT;
315 /* Forward reach. Signed number. > 0. */
317 /* Backward reach. Signed number. < 0. */
318 offsetT rlx_backward;
320 /* Bytes length of this address. */
321 unsigned char rlx_length;
323 /* Next longer relax-state. 0 means there is no 'next' relax-state. */
324 relax_substateT rlx_more;
327 typedef struct relax_type relax_typeS;
329 /* main program "as.c" (command arguments etc). */
331 COMMON unsigned char flag_no_comments; /* -f */
332 COMMON unsigned char flag_debug; /* -D */
333 COMMON unsigned char flag_signed_overflow_ok; /* -J */
334 #ifndef WORKING_DOT_WORD
335 COMMON unsigned char flag_warn_displacement; /* -K */
338 /* True if local symbols should be retained. */
339 COMMON int flag_keep_locals; /* -L */
341 /* True if we are assembling in MRI mode. */
344 /* Should the data section be made read-only and appended to the text
346 COMMON unsigned char flag_readonly_data_in_text; /* -R */
348 /* True if warnings should be inhibited. */
349 COMMON int flag_no_warnings; /* -W */
351 /* True if warnings count as errors. */
352 COMMON int flag_fatal_warnings; /* --fatal-warnings */
354 /* True if we should attempt to generate output even if non-fatal errors
356 COMMON unsigned char flag_always_generate_output; /* -Z */
358 /* This is true if the assembler should output time and space usage. */
359 COMMON unsigned char flag_print_statistics;
361 /* True if local absolute symbols are to be stripped. */
362 COMMON int flag_strip_local_absolute;
364 /* True if we should generate a traditional format object file. */
365 COMMON int flag_traditional_format;
367 /* Type of compressed debug sections we should generate. */
368 COMMON enum compressed_debug_section_type flag_compress_debug;
370 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
371 COMMON int flag_execstack;
373 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
374 COMMON int flag_noexecstack;
376 /* name of emitted object file */
377 COMMON const char *out_file_name;
379 /* name of file defining extensions to the basic instruction set */
380 COMMON char *insttbl_file_name;
382 /* TRUE if we need a second pass. */
383 COMMON int need_pass_2;
385 /* TRUE if we should do no relaxing, and
386 leave lots of padding. */
387 COMMON int linkrelax;
389 COMMON int do_not_pad_sections_to_alignment;
391 /* TRUE if we should produce a listing. */
394 /* Type of debugging information we should generate. We currently support
395 stabs, ECOFF, and DWARF2.
397 NOTE! This means debug information about the assembly source code itself
398 and _not_ about possible debug information from a high-level language.
399 This is especially relevant to DWARF2, since the compiler may emit line
400 number directives that the assembler resolves. */
412 extern enum debug_info_type debug_type;
413 extern int use_gnu_debug_info_extensions;
414 COMMON bfd_boolean flag_dwarf_sections;
416 /* Maximum level of macro nesting. */
417 extern int max_macro_nest;
419 /* Verbosity level. */
422 /* Obstack chunk size. Keep large for efficient space use, make small to
423 increase malloc calls for monitoring memory allocation. */
424 extern int chunksize;
428 /* assembler mnemonic, lower case, no '.' */
429 const char *poc_name;
431 void (*poc_handler) (int);
432 /* Value to pass to handler */
436 typedef struct _pseudo_type pseudo_typeS;
438 #if (__GNUC__ >= 2) && !defined(VMS)
439 /* for use with -Wformat */
441 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6
442 /* Support for double underscores in attribute names was added in gcc
443 2.6, so avoid them if we are using an earlier version. */
444 #define __printf__ printf
445 #define __format__ format
448 #define PRINTF_LIKE(FCN) \
449 void FCN (const char *format, ...) \
450 __attribute__ ((__format__ (__printf__, 1, 2)))
451 #define PRINTF_WHERE_LIKE(FCN) \
452 void FCN (const char *file, unsigned int line, const char *format, ...) \
453 __attribute__ ((__format__ (__printf__, 3, 4)))
455 #else /* __GNUC__ < 2 || defined(VMS) */
457 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
458 #define PRINTF_WHERE_LIKE(FCN) void FCN (const char *file, \
460 const char *format, ...)
462 #endif /* __GNUC__ < 2 || defined(VMS) */
464 PRINTF_LIKE (as_bad);
465 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
466 PRINTF_LIKE (as_tsktsk);
467 PRINTF_LIKE (as_warn);
468 PRINTF_WHERE_LIKE (as_bad_where);
469 PRINTF_WHERE_LIKE (as_warn_where);
471 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
472 void signal_init (void);
473 void sprint_value (char *, addressT);
474 int had_errors (void);
475 int had_warnings (void);
476 void as_warn_value_out_of_range (const char *, offsetT, offsetT, offsetT,
477 const char *, unsigned);
478 void as_bad_value_out_of_range (const char *, offsetT, offsetT, offsetT,
479 const char *, unsigned);
480 void print_version_id (void);
481 char * app_push (void);
483 /* Number of littlenums required to hold an extended precision number. */
484 #define MAX_LITTLENUMS 6
486 char * atof_ieee (char *, int, LITTLENUM_TYPE *);
487 const char * ieee_md_atof (int, char *, int *, bfd_boolean);
488 const char * vax_md_atof (int, char *, int *);
489 char * input_scrub_include_file (const char *, char *);
490 void input_scrub_insert_line (const char *);
491 void input_scrub_insert_file (char *);
492 char * input_scrub_new_file (const char *);
493 char * input_scrub_next_buffer (char **bufp);
494 size_t do_scrub_chars (size_t (*get) (char *, size_t), char *, size_t);
495 int gen_to_words (LITTLENUM_TYPE *, int, long);
497 int ignore_input (void);
498 void cond_finish_check (int);
499 void cond_exit_macro (int);
500 int seen_at_least_1_file (void);
501 void app_pop (char *);
502 const char * as_where (unsigned int *);
503 const char * as_where_physical (unsigned int *);
504 void bump_line_counters (void);
505 void do_scrub_begin (int);
506 void input_scrub_begin (void);
507 void input_scrub_close (void);
508 void input_scrub_end (void);
509 int new_logical_line (const char *, int);
510 int new_logical_line_flags (const char *, int, int);
511 void subsegs_begin (void);
512 void subseg_change (segT, int);
513 segT subseg_new (const char *, subsegT);
514 segT subseg_force_new (const char *, subsegT);
515 void subseg_set (segT, subsegT);
516 int subseg_text_p (segT);
517 int seg_not_empty_p (segT);
518 void start_dependencies (char *);
519 void register_dependency (const char *);
520 void print_dependencies (void);
521 segT subseg_get (const char *, int);
523 const char *remap_debug_filename (const char *);
524 void add_debug_prefix_map (const char *);
527 xmemdup0 (const char *in, size_t len)
529 char *out = (char *) xmalloc (len + 1);
531 return (char *) memcpy (out, in, len);
536 typedef struct symbol symbolS;
537 typedef struct frag fragS;
540 valueT add_to_literal_pool (symbolS *, valueT, segT, int);
542 int check_eh_frame (struct expressionS *, unsigned int *);
543 int eh_frame_estimate_size_before_relax (fragS *);
544 int eh_frame_relax_frag (fragS *);
545 void eh_frame_convert_frag (fragS *);
546 int generic_force_reloc (struct fix *);
548 #include "expr.h" /* Before targ-*.h */
550 /* This one starts the chain of target dependent headers. */
551 #include "targ-env.h"
554 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
572 #ifdef USE_EMULATIONS
578 extern int enable_h_tick_hex;
582 /* True if we are assembling in m68k MRI mode. */
583 COMMON int flag_m68k_mri;
584 #define DOLLAR_AMBIGU flag_m68k_mri
586 #define flag_m68k_mri 0
590 COMMON int warn_comment;
591 COMMON unsigned int found_comment;
592 COMMON const char * found_comment_file;
595 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
596 /* If .size directive failure should be error or warning. */
597 COMMON int flag_allow_nonconst_size;
599 /* If we should generate ELF common symbols with the STT_COMMON type. */
600 extern int flag_use_elf_stt_common;
602 /* TRUE iff GNU Build attribute notes should
603 be generated if none are in the input files. */
604 extern bfd_boolean flag_generate_build_notes;
606 /* If section name substitution sequences should be honored */
607 COMMON int flag_sectname_subst;
610 #ifndef DOLLAR_AMBIGU
611 #define DOLLAR_AMBIGU 0
614 #ifndef NUMBERS_WITH_SUFFIX
615 #define NUMBERS_WITH_SUFFIX 0
618 #ifndef LOCAL_LABELS_DOLLAR
619 #define LOCAL_LABELS_DOLLAR 0
622 #ifndef LOCAL_LABELS_FB
623 #define LOCAL_LABELS_FB 0
626 #ifndef LABELS_WITHOUT_COLONS
627 #define LABELS_WITHOUT_COLONS 0
630 #ifndef NO_PSEUDO_DOT
631 #define NO_PSEUDO_DOT 0
634 #ifndef TEXT_SECTION_NAME
635 #define TEXT_SECTION_NAME ".text"
636 #define DATA_SECTION_NAME ".data"
637 #define BSS_SECTION_NAME ".bss"
640 #ifndef OCTETS_PER_BYTE_POWER
641 #define OCTETS_PER_BYTE_POWER 0
643 #ifndef OCTETS_PER_BYTE
644 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
646 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
647 #error "Octets per byte conflicts with its power-of-two definition!"