1 /* as.h - global header file
2 Copyright (C) 1987-2016 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23 /* I think this stuff is largely out of date.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) \
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 /* Other stuff from config.h. */
102 #ifdef NEED_DECLARATION_ENVIRON
103 extern char **environ;
105 #ifdef NEED_DECLARATION_ERRNO
108 #ifdef NEED_DECLARATION_FFS
109 extern int ffs (int);
111 #ifdef NEED_DECLARATION_FREE
114 #ifdef NEED_DECLARATION_MALLOC
115 extern void *malloc ();
116 extern void *realloc ();
118 #ifdef NEED_DECLARATION_STRSTR
119 extern char *strstr ();
122 #if !HAVE_DECL_MEMPCPY
123 void *mempcpy(void *, const void *, size_t);
126 #if !HAVE_DECL_VSNPRINTF
127 extern int vsnprintf(char *, size_t, const char *, va_list);
130 /* This is needed for VMS. */
131 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
132 #define unlink remove
135 /* Hack to make "gcc -Wall" not complain about obstack macros. */
136 #if !defined (memcpy) && !defined (bcopy)
137 #define bcopy(src,dest,size) memcpy (dest, src, size)
141 #define __LINE__ "unknown"
142 #endif /* __LINE__ */
145 #define __FILE__ "unknown"
146 #endif /* __FILE__ */
149 #ifdef USE_BINARY_FOPEN
150 #include "fopen-bin.h"
152 #include "fopen-same.h"
157 #define EXIT_SUCCESS 0
158 #define EXIT_FAILURE 1
165 #define obstack_chunk_alloc xmalloc
166 #define obstack_chunk_free xfree
172 #define BAD_CASE(val) \
174 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
175 (long) val, __LINE__, __FILE__); \
180 /* These are assembler-wide concepts */
182 extern bfd *stdoutput;
183 typedef bfd_vma addressT;
184 typedef bfd_signed_vma offsetT;
186 /* Type of symbol value, etc. For use in prototypes. */
187 typedef addressT valueT;
191 #define COMMON /* Declare our COMMONs storage here. */
193 #define COMMON extern /* Our commons live elsewhere. */
196 /* COMMON now defined */
198 #ifndef ENABLE_CHECKING
199 #define ENABLE_CHECKING 0
202 #if ENABLE_CHECKING || defined (DEBUG)
204 #define know(p) gas_assert(p) /* Verify our assumptions! */
205 #endif /* not yet defined */
207 #define know(p) do {} while (0) /* know() checks are no-op.ed */
212 /* Supplies sanitised buffers to read.c.
213 Also understands printing line-number part of error messages. */
215 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
217 typedef asection *segT;
218 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \
219 && (SEG) != undefined_section \
220 && (SEG) != reg_section \
221 && (SEG) != expr_section)
224 /* What subseg we are accessing now? */
225 COMMON subsegT now_subseg;
227 /* Segment our instructions emit to. */
230 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
232 extern segT reg_section, expr_section;
233 /* Shouldn't these be eliminated someday? */
234 extern segT text_section, data_section, bss_section;
235 #define absolute_section bfd_abs_section_ptr
236 #define undefined_section bfd_und_section_ptr
240 /* Dummy frag used by listing code. */
243 /* Variable chars to be repeated fr_offset times.
244 Fr_symbol unused. Used with fr_offset == 0 for a
245 constant length frag. */
248 /* Align. The fr_offset field holds the power of 2 to which to
249 align. The fr_var field holds the number of characters in the
250 fill pattern. The fr_subtype field holds the maximum number of
251 bytes to skip when aligning, or 0 if there is no maximum. */
254 /* Align code. The fr_offset field holds the power of 2 to which
255 to align. This type is only generated by machine specific
256 code, which is normally responsible for handling the fill
257 pattern. The fr_subtype field holds the maximum number of
258 bytes to skip when aligning, or 0 if there is no maximum. */
261 /* Test for alignment. Like rs_align, but used by several targets
262 to warn if data is not properly aligned. */
265 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
269 #ifndef WORKING_DOT_WORD
274 /* Machine specific relaxable (or similarly alterable) instruction. */
275 rs_machine_dependent,
277 /* .space directive with expression operand that needs to be computed
278 later. Similar to rs_org, but different.
280 1 variable char: fill character */
283 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
284 unsigned, 1 for signed. */
287 /* Exception frame information which we may be able to optimize. */
290 /* Cross-fragment dwarf2 line number optimization. */
294 typedef enum _relax_state relax_stateT;
296 /* This type is used in prototypes, so it can't be a type that will be
297 widened for argument passing. */
298 typedef unsigned int relax_substateT;
300 /* Enough bits for address, but still an integer type.
301 Could be a problem, cross-assembling for 64-bit machines. */
302 typedef addressT relax_addressT;
306 /* Forward reach. Signed number. > 0. */
308 /* Backward reach. Signed number. < 0. */
309 offsetT rlx_backward;
311 /* Bytes length of this address. */
312 unsigned char rlx_length;
314 /* Next longer relax-state. 0 means there is no 'next' relax-state. */
315 relax_substateT rlx_more;
318 typedef struct relax_type relax_typeS;
320 /* main program "as.c" (command arguments etc). */
322 COMMON unsigned char flag_no_comments; /* -f */
323 COMMON unsigned char flag_debug; /* -D */
324 COMMON unsigned char flag_signed_overflow_ok; /* -J */
325 #ifndef WORKING_DOT_WORD
326 COMMON unsigned char flag_warn_displacement; /* -K */
329 /* True if local symbols should be retained. */
330 COMMON int flag_keep_locals; /* -L */
332 /* True if we are assembling in MRI mode. */
335 /* Should the data section be made read-only and appended to the text
337 COMMON unsigned char flag_readonly_data_in_text; /* -R */
339 /* True if warnings should be inhibited. */
340 COMMON int flag_no_warnings; /* -W */
342 /* True if warnings count as errors. */
343 COMMON int flag_fatal_warnings; /* --fatal-warnings */
345 /* True if we should attempt to generate output even if non-fatal errors
347 COMMON unsigned char flag_always_generate_output; /* -Z */
349 /* This is true if the assembler should output time and space usage. */
350 COMMON unsigned char flag_print_statistics;
352 /* True if local absolute symbols are to be stripped. */
353 COMMON int flag_strip_local_absolute;
355 /* True if we should generate a traditional format object file. */
356 COMMON int flag_traditional_format;
358 /* Type of compressed debug sections we should generate. */
359 COMMON enum compressed_debug_section_type flag_compress_debug;
361 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
362 COMMON int flag_execstack;
364 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
365 COMMON int flag_noexecstack;
367 /* name of emitted object file */
368 COMMON const char *out_file_name;
370 /* name of file defining extensions to the basic instruction set */
371 COMMON char *insttbl_file_name;
373 /* TRUE if we need a second pass. */
374 COMMON int need_pass_2;
376 /* TRUE if we should do no relaxing, and
377 leave lots of padding. */
378 COMMON int linkrelax;
380 COMMON int do_not_pad_sections_to_alignment;
382 /* TRUE if we should produce a listing. */
385 /* Type of debugging information we should generate. We currently support
386 stabs, ECOFF, and DWARF2.
388 NOTE! This means debug information about the assembly source code itself
389 and _not_ about possible debug information from a high-level language.
390 This is especially relevant to DWARF2, since the compiler may emit line
391 number directives that the assembler resolves. */
403 extern enum debug_info_type debug_type;
404 extern int use_gnu_debug_info_extensions;
405 COMMON bfd_boolean flag_dwarf_sections;
407 /* Maximum level of macro nesting. */
408 extern int max_macro_nest;
410 /* Verbosity level. */
413 /* Obstack chunk size. Keep large for efficient space use, make small to
414 increase malloc calls for monitoring memory allocation. */
415 extern int chunksize;
419 /* assembler mnemonic, lower case, no '.' */
420 const char *poc_name;
422 void (*poc_handler) (int);
423 /* Value to pass to handler */
427 typedef struct _pseudo_type pseudo_typeS;
429 #if (__GNUC__ >= 2) && !defined(VMS)
430 /* for use with -Wformat */
432 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6
433 /* Support for double underscores in attribute names was added in gcc
434 2.6, so avoid them if we are using an earlier version. */
435 #define __printf__ printf
436 #define __format__ format
439 #define PRINTF_LIKE(FCN) \
440 void FCN (const char *format, ...) \
441 __attribute__ ((__format__ (__printf__, 1, 2)))
442 #define PRINTF_WHERE_LIKE(FCN) \
443 void FCN (const char *file, unsigned int line, const char *format, ...) \
444 __attribute__ ((__format__ (__printf__, 3, 4)))
446 #else /* __GNUC__ < 2 || defined(VMS) */
448 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
449 #define PRINTF_WHERE_LIKE(FCN) void FCN (const char *file, \
451 const char *format, ...)
453 #endif /* __GNUC__ < 2 || defined(VMS) */
455 PRINTF_LIKE (as_bad);
456 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
457 PRINTF_LIKE (as_tsktsk);
458 PRINTF_LIKE (as_warn);
459 PRINTF_WHERE_LIKE (as_bad_where);
460 PRINTF_WHERE_LIKE (as_warn_where);
462 void as_assert (const char *, int, const char *) ATTRIBUTE_NORETURN;
463 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
464 void sprint_value (char *, addressT);
465 int had_errors (void);
466 int had_warnings (void);
467 void as_warn_value_out_of_range (const char *, offsetT, offsetT, offsetT,
468 const char *, unsigned);
469 void as_bad_value_out_of_range (const char *, offsetT, offsetT, offsetT,
470 const char *, unsigned);
471 void print_version_id (void);
472 char * app_push (void);
473 char * atof_ieee (char *, int, LITTLENUM_TYPE *);
474 const char * ieee_md_atof (int, char *, int *, bfd_boolean);
475 const char * vax_md_atof (int, char *, int *);
476 char * input_scrub_include_file (const char *, char *);
477 void input_scrub_insert_line (const char *);
478 void input_scrub_insert_file (char *);
479 char * input_scrub_new_file (const char *);
480 char * input_scrub_next_buffer (char **bufp);
481 size_t do_scrub_chars (size_t (*get) (char *, size_t), char *, size_t);
482 int gen_to_words (LITTLENUM_TYPE *, int, long);
484 int ignore_input (void);
485 void cond_finish_check (int);
486 void cond_exit_macro (int);
487 int seen_at_least_1_file (void);
488 void app_pop (char *);
489 const char * as_where (unsigned int *);
490 void bump_line_counters (void);
491 void do_scrub_begin (int);
492 void input_scrub_begin (void);
493 void input_scrub_close (void);
494 void input_scrub_end (void);
495 int new_logical_line (const char *, int);
496 int new_logical_line_flags (const char *, int, int);
497 void subsegs_begin (void);
498 void subseg_change (segT, int);
499 segT subseg_new (const char *, subsegT);
500 segT subseg_force_new (const char *, subsegT);
501 void subseg_set (segT, subsegT);
502 int subseg_text_p (segT);
503 int seg_not_empty_p (segT);
504 void start_dependencies (char *);
505 void register_dependency (const char *);
506 void print_dependencies (void);
507 segT subseg_get (const char *, int);
509 const char *remap_debug_filename (const char *);
510 void add_debug_prefix_map (const char *);
513 xmemdup0 (const char *in, size_t len)
515 char *out = (char *) xmalloc (len + 1);
517 return (char *) memcpy (out, in, len);
522 typedef struct symbol symbolS;
523 typedef struct frag fragS;
526 valueT add_to_literal_pool (symbolS *, valueT, segT, int);
528 int check_eh_frame (struct expressionS *, unsigned int *);
529 int eh_frame_estimate_size_before_relax (fragS *);
530 int eh_frame_relax_frag (fragS *);
531 void eh_frame_convert_frag (fragS *);
532 int generic_force_reloc (struct fix *);
534 #include "expr.h" /* Before targ-*.h */
536 /* This one starts the chain of target dependent headers. */
537 #include "targ-env.h"
540 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
558 #ifdef USE_EMULATIONS
564 extern int enable_h_tick_hex;
568 /* True if we are assembling in m68k MRI mode. */
569 COMMON int flag_m68k_mri;
570 #define DOLLAR_AMBIGU flag_m68k_mri
572 #define flag_m68k_mri 0
576 COMMON int warn_comment;
577 COMMON unsigned int found_comment;
578 COMMON const char * found_comment_file;
581 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
582 /* If .size directive failure should be error or warning. */
583 COMMON int flag_allow_nonconst_size;
585 /* If we should generate ELF common symbols with the STT_COMMON type. */
586 extern int flag_use_elf_stt_common;
588 /* If section name substitution sequences should be honored */
589 COMMON int flag_sectname_subst;
592 #ifndef DOLLAR_AMBIGU
593 #define DOLLAR_AMBIGU 0
596 #ifndef NUMBERS_WITH_SUFFIX
597 #define NUMBERS_WITH_SUFFIX 0
600 #ifndef LOCAL_LABELS_DOLLAR
601 #define LOCAL_LABELS_DOLLAR 0
604 #ifndef LOCAL_LABELS_FB
605 #define LOCAL_LABELS_FB 0
608 #ifndef LABELS_WITHOUT_COLONS
609 #define LABELS_WITHOUT_COLONS 0
612 #ifndef NO_PSEUDO_DOT
613 #define NO_PSEUDO_DOT 0
616 #ifndef TEXT_SECTION_NAME
617 #define TEXT_SECTION_NAME ".text"
618 #define DATA_SECTION_NAME ".data"
619 #define BSS_SECTION_NAME ".bss"
622 #ifndef OCTETS_PER_BYTE_POWER
623 #define OCTETS_PER_BYTE_POWER 0
625 #ifndef OCTETS_PER_BYTE
626 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
628 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
629 #error "Octets per byte conflicts with its power-of-two definition!"