1 /* as.h - global header file 2 Copyright (C) 1987-2014 Free Software Foundation, Inc. 3 4 This file is part of GAS, the GNU Assembler. 5 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) 9 any later version. 10 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. 15 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 19 02110-1301, USA. */ 20 21 #ifndef GAS 22 #define GAS 1 23 /* I think this stuff is largely out of date. xoxorich. 24 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. 30 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 34 COMMON as "". 35 If TEST is #defined, then we are testing a module: #define COMMON as "". */ 36 37 #include "alloca-conf.h" 38 39 /* Now, tend to the rest of the configuration. */ 40 41 /* System include files first... */ 42 #include <stdio.h> 43 44 #ifdef STRING_WITH_STRINGS 45 #include <string.h> 46 #include <strings.h> 47 #else 48 #ifdef HAVE_STRING_H 49 #include <string.h> 50 #else 51 #ifdef HAVE_STRINGS_H 52 #include <strings.h> 53 #endif 54 #endif 55 #endif 56 57 #ifdef HAVE_STDLIB_H 58 #include <stdlib.h> 59 #endif 60 #ifdef HAVE_UNISTD_H 61 #include <unistd.h> 62 #endif 63 #ifdef HAVE_SYS_TYPES_H 64 /* for size_t, pid_t */ 65 #include <sys/types.h> 66 #endif 67 68 #ifdef HAVE_ERRNO_H 69 #include <errno.h> 70 #endif 71 72 #include <stdarg.h> 73 74 #include "getopt.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 81 82 #ifdef DEBUG 83 #undef NDEBUG 84 #endif 85 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) 86 #define __PRETTY_FUNCTION__ ((char *) NULL) 87 #endif 88 #define gas_assert(P) \ 89 ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))) 90 #undef abort 91 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__) 92 93 /* Now GNU header files... */ 94 #include "ansidecl.h" 95 #include "bfd.h" 96 #include "libiberty.h" 97 98 /* Define the standard progress macros. */ 99 #include "progress.h" 100 101 /* This doesn't get taken care of anywhere. */ 102 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */ 103 #if !defined (__GNUC__) && !defined (inline) 104 #define inline 105 #endif 106 #endif /* !__MWERKS__ */ 107 108 /* Other stuff from config.h. */ 109 #ifdef NEED_DECLARATION_ENVIRON 110 extern char **environ; 111 #endif 112 #ifdef NEED_DECLARATION_ERRNO 113 extern int errno; 114 #endif 115 #ifdef NEED_DECLARATION_FFS 116 extern int ffs (int); 117 #endif 118 #ifdef NEED_DECLARATION_FREE 119 extern void free (); 120 #endif 121 #ifdef NEED_DECLARATION_MALLOC 122 extern void *malloc (); 123 extern void *realloc (); 124 #endif 125 #ifdef NEED_DECLARATION_STRSTR 126 extern char *strstr (); 127 #endif 128 129 #if !HAVE_DECL_MEMPCPY 130 void *mempcpy(void *, const void *, size_t); 131 #endif 132 133 #if !HAVE_DECL_VSNPRINTF 134 extern int vsnprintf(char *, size_t, const char *, va_list); 135 #endif 136 137 /* This is needed for VMS. */ 138 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE) 139 #define unlink remove 140 #endif 141 142 /* 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) 145 #endif 146 147 /* Make Saber happier on obstack.h. */ 148 #ifdef SABER 149 #undef __PTR_TO_INT 150 #define __PTR_TO_INT(P) ((int) (P)) 151 #undef __INT_TO_PTR 152 #define __INT_TO_PTR(P) ((char *) (P)) 153 #endif 154 155 #ifndef __LINE__ 156 #define __LINE__ "unknown" 157 #endif /* __LINE__ */ 158 159 #ifndef __FILE__ 160 #define __FILE__ "unknown" 161 #endif /* __FILE__ */ 162 163 #ifndef FOPEN_WB 164 #ifdef USE_BINARY_FOPEN 165 #include "fopen-bin.h" 166 #else 167 #include "fopen-same.h" 168 #endif 169 #endif 170 171 #ifndef EXIT_SUCCESS 172 #define EXIT_SUCCESS 0 173 #define EXIT_FAILURE 1 174 #endif 175 176 #ifndef SEEK_SET 177 #define SEEK_SET 0 178 #endif 179 180 #define obstack_chunk_alloc xmalloc 181 #define obstack_chunk_free xfree 182 183 #define xfree free 184 185 #include "asintl.h" 186 187 #define BAD_CASE(val) \ 188 { \ 189 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \ 190 (long) val, __LINE__, __FILE__); \ 191 } 192 193 #include "flonum.h" 195 196 /* These are assembler-wide concepts */ 197 198 extern bfd *stdoutput; 199 typedef bfd_vma addressT; 200 typedef bfd_signed_vma offsetT; 201 202 /* Type of symbol value, etc. For use in prototypes. */ 203 typedef addressT valueT; 204 205 #ifndef COMMON 206 #ifdef TEST 207 #define COMMON /* Declare our COMMONs storage here. */ 208 #else 209 #define COMMON extern /* Our commons live elsewhere. */ 210 #endif 211 #endif 212 /* COMMON now defined */ 213 214 #ifndef ENABLE_CHECKING 215 #define ENABLE_CHECKING 0 216 #endif 217 218 #if ENABLE_CHECKING || defined (DEBUG) 219 #ifndef know 220 #define know(p) gas_assert(p) /* Verify our assumptions! */ 221 #endif /* not yet defined */ 222 #else 223 #define know(p) do {} while (0) /* know() checks are no-op.ed */ 224 #endif 225 226 /* input_scrub.c */ 228 229 /* Supplies sanitised buffers to read.c. 230 Also understands printing line-number part of error messages. */ 231 232 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/ 234 235 typedef asection *segT; 236 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \ 237 && (SEG) != undefined_section \ 238 && (SEG) != reg_section \ 239 && (SEG) != expr_section) 240 typedef int subsegT; 241 242 /* What subseg we are accessing now? */ 243 COMMON subsegT now_subseg; 244 245 /* Segment our instructions emit to. */ 246 COMMON segT now_seg; 247 248 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG) 249 250 extern segT reg_section, expr_section; 251 /* Shouldn't these be eliminated someday? */ 252 extern segT text_section, data_section, bss_section; 253 #define absolute_section bfd_abs_section_ptr 254 #define undefined_section bfd_und_section_ptr 255 256 enum _relax_state 257 { 258 /* Dummy frag used by listing code. */ 259 rs_dummy = 0, 260 261 /* Variable chars to be repeated fr_offset times. 262 Fr_symbol unused. Used with fr_offset == 0 for a 263 constant length frag. */ 264 rs_fill, 265 266 /* Align. The fr_offset field holds the power of 2 to which to 267 align. The fr_var field holds the number of characters in the 268 fill pattern. The fr_subtype field holds the maximum number of 269 bytes to skip when aligning, or 0 if there is no maximum. */ 270 rs_align, 271 272 /* Align code. The fr_offset field holds the power of 2 to which 273 to align. This type is only generated by machine specific 274 code, which is normally responsible for handling the fill 275 pattern. The fr_subtype field holds the maximum number of 276 bytes to skip when aligning, or 0 if there is no maximum. */ 277 rs_align_code, 278 279 /* Test for alignment. Like rs_align, but used by several targets 280 to warn if data is not properly aligned. */ 281 rs_align_test, 282 283 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill 284 character. */ 285 rs_org, 286 287 #ifndef WORKING_DOT_WORD 288 /* JF: gunpoint */ 289 rs_broken_word, 290 #endif 291 292 /* Machine specific relaxable (or similarly alterable) instruction. */ 293 rs_machine_dependent, 294 295 /* .space directive with expression operand that needs to be computed 296 later. Similar to rs_org, but different. 297 fr_symbol: operand 298 1 variable char: fill character */ 299 rs_space, 300 301 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for 302 unsigned, 1 for signed. */ 303 rs_leb128, 304 305 /* Exception frame information which we may be able to optimize. */ 306 rs_cfa, 307 308 /* Cross-fragment dwarf2 line number optimization. */ 309 rs_dwarf2dbg 310 }; 311 312 typedef enum _relax_state relax_stateT; 313 314 /* This type is used in prototypes, so it can't be a type that will be 315 widened for argument passing. */ 316 typedef unsigned int relax_substateT; 317 318 /* Enough bits for address, but still an integer type. 319 Could be a problem, cross-assembling for 64-bit machines. */ 320 typedef addressT relax_addressT; 321 322 struct relax_type 323 { 324 /* Forward reach. Signed number. > 0. */ 325 offsetT rlx_forward; 326 /* Backward reach. Signed number. < 0. */ 327 offsetT rlx_backward; 328 329 /* Bytes length of this address. */ 330 unsigned char rlx_length; 331 332 /* Next longer relax-state. 0 means there is no 'next' relax-state. */ 333 relax_substateT rlx_more; 334 }; 335 336 typedef struct relax_type relax_typeS; 337 338 /* main program "as.c" (command arguments etc). */ 340 341 COMMON unsigned char flag_no_comments; /* -f */ 342 COMMON unsigned char flag_debug; /* -D */ 343 COMMON unsigned char flag_signed_overflow_ok; /* -J */ 344 #ifndef WORKING_DOT_WORD 345 COMMON unsigned char flag_warn_displacement; /* -K */ 346 #endif 347 348 /* True if local symbols should be retained. */ 349 COMMON int flag_keep_locals; /* -L */ 350 351 /* True if we are assembling in MRI mode. */ 352 COMMON int flag_mri; 353 354 /* Should the data section be made read-only and appended to the text 355 section? */ 356 COMMON unsigned char flag_readonly_data_in_text; /* -R */ 357 358 /* True if warnings should be inhibited. */ 359 COMMON int flag_no_warnings; /* -W */ 360 361 /* True if warnings count as errors. */ 362 COMMON int flag_fatal_warnings; /* --fatal-warnings */ 363 364 /* True if we should attempt to generate output even if non-fatal errors 365 are detected. */ 366 COMMON unsigned char flag_always_generate_output; /* -Z */ 367 368 /* This is true if the assembler should output time and space usage. */ 369 COMMON unsigned char flag_print_statistics; 370 371 /* True if local absolute symbols are to be stripped. */ 372 COMMON int flag_strip_local_absolute; 373 374 /* True if we should generate a traditional format object file. */ 375 COMMON int flag_traditional_format; 376 377 /* TRUE if debug sections should be compressed. */ 378 COMMON int flag_compress_debug; 379 380 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 381 COMMON int flag_execstack; 382 383 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 384 COMMON int flag_noexecstack; 385 386 /* name of emitted object file */ 387 COMMON char *out_file_name; 388 389 /* name of file defining extensions to the basic instruction set */ 390 COMMON char *insttbl_file_name; 391 392 /* TRUE if we need a second pass. */ 393 COMMON int need_pass_2; 394 395 /* TRUE if we should do no relaxing, and 396 leave lots of padding. */ 397 COMMON int linkrelax; 398 399 /* TRUE if we should produce a listing. */ 400 extern int listing; 401 402 /* Type of debugging information we should generate. We currently support 403 stabs, ECOFF, and DWARF2. 404 405 NOTE! This means debug information about the assembly source code itself 406 and _not_ about possible debug information from a high-level language. 407 This is especially relevant to DWARF2, since the compiler may emit line 408 number directives that the assembler resolves. */ 409 410 enum debug_info_type 411 { 412 DEBUG_UNSPECIFIED, 413 DEBUG_NONE, 414 DEBUG_STABS, 415 DEBUG_ECOFF, 416 DEBUG_DWARF, 417 DEBUG_DWARF2 418 }; 419 420 extern enum debug_info_type debug_type; 421 extern int use_gnu_debug_info_extensions; 422 COMMON bfd_boolean flag_dwarf_sections; 423 424 /* Maximum level of macro nesting. */ 426 extern int max_macro_nest; 427 428 /* Verbosity level. */ 429 extern int verbose; 430 431 /* Enable incbin directive. */ 432 extern int allow_incbin_directive; 433 434 /* Obstack chunk size. Keep large for efficient space use, make small to 435 increase malloc calls for monitoring memory allocation. */ 436 extern int chunksize; 437 438 struct _pseudo_type 439 { 440 /* assembler mnemonic, lower case, no '.' */ 441 const char *poc_name; 442 /* Do the work */ 443 void (*poc_handler) (int); 444 /* Value to pass to handler */ 445 int poc_val; 446 }; 447 448 typedef struct _pseudo_type pseudo_typeS; 449 450 #if (__GNUC__ >= 2) && !defined(VMS) 451 /* for use with -Wformat */ 452 453 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6 454 /* Support for double underscores in attribute names was added in gcc 455 2.6, so avoid them if we are using an earlier version. */ 456 #define __printf__ printf 457 #define __format__ format 458 #endif 459 460 #define PRINTF_LIKE(FCN) \ 461 void FCN (const char *format, ...) \ 462 __attribute__ ((__format__ (__printf__, 1, 2))) 463 #define PRINTF_WHERE_LIKE(FCN) \ 464 void FCN (char *file, unsigned int line, const char *format, ...) \ 465 __attribute__ ((__format__ (__printf__, 3, 4))) 466 467 #else /* __GNUC__ < 2 || defined(VMS) */ 468 469 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...) 470 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \ 471 unsigned int line, \ 472 const char *format, ...) 473 474 #endif /* __GNUC__ < 2 || defined(VMS) */ 475 476 PRINTF_LIKE (as_bad); 477 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN; 478 PRINTF_LIKE (as_tsktsk); 479 PRINTF_LIKE (as_warn); 480 PRINTF_WHERE_LIKE (as_bad_where); 481 PRINTF_WHERE_LIKE (as_warn_where); 482 483 void as_assert (const char *, int, const char *); 484 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 485 void sprint_value (char *, addressT); 486 int had_errors (void); 487 int had_warnings (void); 488 void as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 489 void as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 490 void print_version_id (void); 491 char * app_push (void); 492 char * atof_ieee (char *, int, LITTLENUM_TYPE *); 493 char * ieee_md_atof (int, char *, int *, bfd_boolean); 494 char * vax_md_atof (int, char *, int *); 495 char * input_scrub_include_file (char *, char *); 496 void input_scrub_insert_line (const char *); 497 void input_scrub_insert_file (char *); 498 char * input_scrub_new_file (char *); 499 char * input_scrub_next_buffer (char **bufp); 500 size_t do_scrub_chars (size_t (*get) (char *, size_t), char *, size_t); 501 int gen_to_words (LITTLENUM_TYPE *, int, long); 502 int had_err (void); 503 int ignore_input (void); 504 void cond_finish_check (int); 505 void cond_exit_macro (int); 506 int seen_at_least_1_file (void); 507 void app_pop (char *); 508 void as_where (char **, unsigned int *); 509 void bump_line_counters (void); 510 void do_scrub_begin (int); 511 void input_scrub_begin (void); 512 void input_scrub_close (void); 513 void input_scrub_end (void); 514 int new_logical_line (char *, int); 515 int new_logical_line_flags (char *, int, int); 516 void subsegs_begin (void); 517 void subseg_change (segT, int); 518 segT subseg_new (const char *, subsegT); 519 segT subseg_force_new (const char *, subsegT); 520 void subseg_set (segT, subsegT); 521 int subseg_text_p (segT); 522 int seg_not_empty_p (segT); 523 void start_dependencies (char *); 524 void register_dependency (char *); 525 void print_dependencies (void); 526 segT subseg_get (const char *, int); 527 528 const char *remap_debug_filename (const char *); 529 void add_debug_prefix_map (const char *); 530 531 struct expressionS; 532 struct fix; 533 typedef struct symbol symbolS; 534 typedef struct frag fragS; 535 536 /* literal.c */ 537 valueT add_to_literal_pool (symbolS *, valueT, segT, int); 538 539 int check_eh_frame (struct expressionS *, unsigned int *); 540 int eh_frame_estimate_size_before_relax (fragS *); 541 int eh_frame_relax_frag (fragS *); 542 void eh_frame_convert_frag (fragS *); 543 int generic_force_reloc (struct fix *); 544 545 #include "expr.h" /* Before targ-*.h */ 546 547 /* This one starts the chain of target dependant headers. */ 548 #include "targ-env.h" 549 550 #ifdef OBJ_MAYBE_ELF 551 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour) 552 #else 553 #ifdef OBJ_ELF 554 #define IS_ELF 1 555 #else 556 #define IS_ELF 0 557 #endif 558 #endif 559 560 #include "write.h" 561 #include "frags.h" 562 #include "hash.h" 563 #include "read.h" 564 #include "symbols.h" 565 566 #include "tc.h" 567 #include "obj.h" 568 569 #ifdef USE_EMULATIONS 570 #include "emul.h" 571 #endif 572 #include "listing.h" 573 574 #ifdef H_TICK_HEX 575 extern int enable_h_tick_hex; 576 #endif 577 578 #ifdef TC_M68K 579 /* True if we are assembling in m68k MRI mode. */ 580 COMMON int flag_m68k_mri; 581 #define DOLLAR_AMBIGU flag_m68k_mri 582 #else 583 #define flag_m68k_mri 0 584 #endif 585 586 #ifdef WARN_COMMENTS 587 COMMON int warn_comment; 588 COMMON unsigned int found_comment; 589 COMMON char * found_comment_file; 590 #endif 591 592 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 593 /* If .size directive failure should be error or warning. */ 594 COMMON enum 595 { 596 size_check_error = 0, 597 size_check_warning 598 } 599 flag_size_check; 600 #endif 601 602 #ifndef DOLLAR_AMBIGU 603 #define DOLLAR_AMBIGU 0 604 #endif 605 606 #ifndef NUMBERS_WITH_SUFFIX 607 #define NUMBERS_WITH_SUFFIX 0 608 #endif 609 610 #ifndef LOCAL_LABELS_DOLLAR 611 #define LOCAL_LABELS_DOLLAR 0 612 #endif 613 614 #ifndef LOCAL_LABELS_FB 615 #define LOCAL_LABELS_FB 0 616 #endif 617 618 #ifndef LABELS_WITHOUT_COLONS 619 #define LABELS_WITHOUT_COLONS 0 620 #endif 621 622 #ifndef NO_PSEUDO_DOT 623 #define NO_PSEUDO_DOT 0 624 #endif 625 626 #ifndef TEXT_SECTION_NAME 627 #define TEXT_SECTION_NAME ".text" 628 #define DATA_SECTION_NAME ".data" 629 #define BSS_SECTION_NAME ".bss" 630 #endif 631 632 #ifndef OCTETS_PER_BYTE_POWER 633 #define OCTETS_PER_BYTE_POWER 0 634 #endif 635 #ifndef OCTETS_PER_BYTE 636 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER) 637 #endif 638 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER) 639 #error "Octets per byte conflicts with its power-of-two definition!" 640 #endif 641 642 #endif /* GAS */ 643
