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 4 Free Software Foundation, Inc. 5 6 This file is part of GAS, the GNU Assembler. 7 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) 11 any later version. 12 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. 17 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 21 02110-1301, USA. */ 22 23 #ifndef GAS 24 #define GAS 1 25 /* I think this stuff is largely out of date. xoxorich. 26 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. 32 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 36 COMMON as "". 37 If TEST is #defined, then we are testing a module: #define COMMON as "". */ 38 39 #include "config.h" 40 #include "bin-bugs.h" 41 42 /* This is the code recommended in the autoconf documentation, almost 43 verbatim. If it doesn't work for you, let me know, and notify 44 djm@gnu.ai.mit.edu as well. */ 45 /* Added void* version for STDC case. This is to be compatible with 46 the declaration in bison.simple, used for m68k operand parsing. 47 --KR 1995.08.08 */ 48 /* Force void* decl for hpux. This is what Bison uses. --KR 1995.08.16 */ 49 50 #ifndef __GNUC__ 51 # if HAVE_ALLOCA_H 52 # include <alloca.h> 53 # else 54 # ifdef _AIX 55 /* Indented so that pre-ansi C compilers will ignore it, rather than 56 choke on it. Some versions of AIX require this to be the first 57 thing in the file. */ 58 #pragma alloca 59 # else 60 # ifndef alloca /* predefined by HP cc +Olibcalls */ 61 # if !defined (__STDC__) && !defined (__hpux) 62 extern char *alloca (); 63 # else 64 extern void *alloca (); 65 # endif /* __STDC__, __hpux */ 66 # endif /* alloca */ 67 # endif /* _AIX */ 68 # endif /* HAVE_ALLOCA_H */ 69 #endif /* __GNUC__ */ 70 71 /* Prefer varargs for non-ANSI compiler, since some will barf if the 72 ellipsis definition is used with a no-arguments declaration. */ 73 #if defined (HAVE_VARARGS_H) && !defined (__STDC__) 74 #undef HAVE_STDARG_H 75 #endif 76 77 #if defined (HAVE_STDARG_H) 78 #define USE_STDARG 79 #endif 80 #if !defined (USE_STDARG) && defined (HAVE_VARARGS_H) 81 #define USE_VARARGS 82 #endif 83 84 /* Now, tend to the rest of the configuration. */ 85 86 /* System include files first... */ 87 #include <stdio.h> 88 #ifdef HAVE_STRING_H 89 #include <string.h> 90 #else 91 #ifdef HAVE_STRINGS_H 92 #include <strings.h> 93 #endif 94 #endif 95 #ifdef HAVE_STDLIB_H 96 #include <stdlib.h> 97 #endif 98 #ifdef HAVE_UNISTD_H 99 #include <unistd.h> 100 #endif 101 #ifdef HAVE_SYS_TYPES_H 102 /* for size_t, pid_t */ 103 #include <sys/types.h> 104 #endif 105 106 #ifdef HAVE_ERRNO_H 107 #include <errno.h> 108 #endif 109 110 #ifdef USE_STDARG 111 #include <stdarg.h> 112 #endif 113 114 #ifdef USE_VARARGS 115 #include <varargs.h> 116 #endif 117 118 #if !defined (USE_STDARG) && !defined (USE_VARARGS) 119 /* Roll our own. */ 120 #define va_alist REST 121 #define va_dcl 122 typedef int * va_list; 123 #define va_start(ARGS) ARGS = &REST 124 #define va_end(ARGS) 125 #endif 126 127 #include "getopt.h" 128 /* The first getopt value for machine-independent long options. 129 150 isn't special; it's just an arbitrary non-ASCII char value. */ 130 #define OPTION_STD_BASE 150 131 /* The first getopt value for machine-dependent long options. 132 190 gives the standard options room to grow. */ 133 #define OPTION_MD_BASE 190 134 135 #ifdef DEBUG 136 #undef NDEBUG 137 #endif 138 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) 139 #define __PRETTY_FUNCTION__ ((char*)0) 140 #endif 141 #define assert(P) \ 142 ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))) 143 #undef abort 144 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__) 145 146 /* Now GNU header files... */ 147 #include "ansidecl.h" 148 #include "bfd.h" 149 #include "libiberty.h" 150 151 /* Define the standard progress macros. */ 152 #include "progress.h" 153 154 /* This doesn't get taken care of anywhere. */ 155 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */ 156 #if !defined (__GNUC__) && !defined (inline) 157 #define inline 158 #endif 159 #endif /* !__MWERKS__ */ 160 161 /* Other stuff from config.h. */ 162 #ifdef NEED_DECLARATION_ENVIRON 163 extern char **environ; 164 #endif 165 #ifdef NEED_DECLARATION_ERRNO 166 extern int errno; 167 #endif 168 #ifdef NEED_DECLARATION_FFS 169 extern int ffs (int); 170 #endif 171 #ifdef NEED_DECLARATION_FREE 172 extern void free (); 173 #endif 174 #ifdef NEED_DECLARATION_MALLOC 175 extern PTR malloc (); 176 extern PTR realloc (); 177 #endif 178 #ifdef NEED_DECLARATION_STRSTR 179 extern char *strstr (); 180 #endif 181 182 #if !HAVE_DECL_VSNPRINTF 183 extern int vsnprintf(char *, size_t, const char *, va_list); 184 #endif 185 186 /* This is needed for VMS. */ 187 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE) 188 #define unlink remove 189 #endif 190 191 /* Hack to make "gcc -Wall" not complain about obstack macros. */ 192 #if !defined (memcpy) && !defined (bcopy) 193 #define bcopy(src,dest,size) memcpy (dest, src, size) 194 #endif 195 196 /* Make Saber happier on obstack.h. */ 197 #ifdef SABER 198 #undef __PTR_TO_INT 199 #define __PTR_TO_INT(P) ((int) (P)) 200 #undef __INT_TO_PTR 201 #define __INT_TO_PTR(P) ((char *) (P)) 202 #endif 203 204 #ifndef __LINE__ 205 #define __LINE__ "unknown" 206 #endif /* __LINE__ */ 207 208 #ifndef __FILE__ 209 #define __FILE__ "unknown" 210 #endif /* __FILE__ */ 211 212 #ifndef FOPEN_WB 213 #if defined GO32 || defined __MINGW32__ 214 #include "fopen-bin.h" 215 #else 216 #include "fopen-same.h" 217 #endif 218 #endif 219 220 #ifndef EXIT_SUCCESS 221 #define EXIT_SUCCESS 0 222 #define EXIT_FAILURE 1 223 #endif 224 225 #ifndef SEEK_SET 226 #define SEEK_SET 0 227 #endif 228 229 #define obstack_chunk_alloc xmalloc 230 #define obstack_chunk_free xfree 231 232 #define xfree free 233 234 #include "asintl.h" 235 236 #define BAD_CASE(val) \ 237 { \ 238 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \ 239 (long) val, __LINE__, __FILE__); \ 240 } 241 242 #include "flonum.h" 243 244 /* These are assembler-wide concepts */ 245 246 extern bfd *stdoutput; 247 typedef bfd_vma addressT; 248 typedef bfd_signed_vma offsetT; 249 250 /* Type of symbol value, etc. For use in prototypes. */ 251 typedef addressT valueT; 252 253 #ifndef COMMON 254 #ifdef TEST 255 #define COMMON /* Declare our COMMONs storage here. */ 256 #else 257 #define COMMON extern /* Our commons live elsewhere. */ 258 #endif 259 #endif 260 /* COMMON now defined */ 261 262 #ifdef DEBUG 263 #ifndef know 264 #define know(p) assert(p) /* Verify our assumptions! */ 265 #endif /* not yet defined */ 266 #else 267 #define know(p) /* know() checks are no-op.ed */ 268 #endif 269 270 /* input_scrub.c */ 271 272 /* Supplies sanitised buffers to read.c. 273 Also understands printing line-number part of error messages. */ 274 275 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/ 276 277 typedef asection *segT; 278 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \ 279 && (SEG) != undefined_section \ 280 && (SEG) != reg_section \ 281 && (SEG) != expr_section) 282 typedef int subsegT; 283 284 /* What subseg we are accessing now? */ 285 COMMON subsegT now_subseg; 286 287 /* Segment our instructions emit to. */ 288 COMMON segT now_seg; 289 290 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG) 291 292 extern segT reg_section, expr_section; 293 /* Shouldn't these be eliminated someday? */ 294 extern segT text_section, data_section, bss_section; 295 #define absolute_section bfd_abs_section_ptr 296 #define undefined_section bfd_und_section_ptr 297 298 enum _relax_state 299 { 300 /* Dummy frag used by listing code. */ 301 rs_dummy = 0, 302 303 /* Variable chars to be repeated fr_offset times. 304 Fr_symbol unused. Used with fr_offset == 0 for a 305 constant length frag. */ 306 rs_fill, 307 308 /* Align. The fr_offset field holds the power of 2 to which to 309 align. The fr_var field holds the number of characters in the 310 fill pattern. The fr_subtype field holds the maximum number of 311 bytes to skip when aligning, or 0 if there is no maximum. */ 312 rs_align, 313 314 /* Align code. The fr_offset field holds the power of 2 to which 315 to align. This type is only generated by machine specific 316 code, which is normally responsible for handling the fill 317 pattern. The fr_subtype field holds the maximum number of 318 bytes to skip when aligning, or 0 if there is no maximum. */ 319 rs_align_code, 320 321 /* Test for alignment. Like rs_align, but used by several targets 322 to warn if data is not properly aligned. */ 323 rs_align_test, 324 325 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill 326 character. */ 327 rs_org, 328 329 #ifndef WORKING_DOT_WORD 330 /* JF: gunpoint */ 331 rs_broken_word, 332 #endif 333 334 /* Machine specific relaxable (or similarly alterable) instruction. */ 335 rs_machine_dependent, 336 337 /* .space directive with expression operand that needs to be computed 338 later. Similar to rs_org, but different. 339 fr_symbol: operand 340 1 variable char: fill character */ 341 rs_space, 342 343 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for 344 unsigned, 1 for signed. */ 345 rs_leb128, 346 347 /* Exception frame information which we may be able to optimize. */ 348 rs_cfa, 349 350 /* Cross-fragment dwarf2 line number optimization. */ 351 rs_dwarf2dbg 352 }; 353 354 typedef enum _relax_state relax_stateT; 355 356 /* This type is used in prototypes, so it can't be a type that will be 357 widened for argument passing. */ 358 typedef unsigned int relax_substateT; 359 360 /* Enough bits for address, but still an integer type. 361 Could be a problem, cross-assembling for 64-bit machines. */ 362 typedef addressT relax_addressT; 363 364 struct relax_type 365 { 366 /* Forward reach. Signed number. > 0. */ 367 offsetT rlx_forward; 368 /* Backward reach. Signed number. < 0. */ 369 offsetT rlx_backward; 370 371 /* Bytes length of this address. */ 372 unsigned char rlx_length; 373 374 /* Next longer relax-state. 0 means there is no 'next' relax-state. */ 375 relax_substateT rlx_more; 376 }; 377 378 typedef struct relax_type relax_typeS; 379 380 /* main program "as.c" (command arguments etc). */ 381 382 COMMON unsigned char flag_no_comments; /* -f */ 383 COMMON unsigned char flag_debug; /* -D */ 384 COMMON unsigned char flag_signed_overflow_ok; /* -J */ 385 #ifndef WORKING_DOT_WORD 386 COMMON unsigned char flag_warn_displacement; /* -K */ 387 #endif 388 389 /* True if local symbols should be retained. */ 390 COMMON int flag_keep_locals; /* -L */ 391 392 /* True if we are assembling in MRI mode. */ 393 COMMON int flag_mri; 394 395 /* Should the data section be made read-only and appended to the text 396 section? */ 397 COMMON unsigned char flag_readonly_data_in_text; /* -R */ 398 399 /* True if warnings should be inhibited. */ 400 COMMON int flag_no_warnings; /* -W */ 401 402 /* True if warnings count as errors. */ 403 COMMON int flag_fatal_warnings; /* --fatal-warnings */ 404 405 /* True if we should attempt to generate output even if non-fatal errors 406 are detected. */ 407 COMMON unsigned char flag_always_generate_output; /* -Z */ 408 409 /* This is true if the assembler should output time and space usage. */ 410 COMMON unsigned char flag_print_statistics; 411 412 /* True if local absolute symbols are to be stripped. */ 413 COMMON int flag_strip_local_absolute; 414 415 /* True if we should generate a traditional format object file. */ 416 COMMON int flag_traditional_format; 417 418 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 419 COMMON int flag_execstack; 420 421 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 422 COMMON int flag_noexecstack; 423 424 /* name of emitted object file */ 425 COMMON char *out_file_name; 426 427 /* name of file defining extensions to the basic instruction set */ 428 COMMON char *insttbl_file_name; 429 430 /* TRUE if we need a second pass. */ 431 COMMON int need_pass_2; 432 433 /* TRUE if we should do no relaxing, and 434 leave lots of padding. */ 435 COMMON int linkrelax; 436 437 /* TRUE if we should produce a listing. */ 438 extern int listing; 439 440 /* Type of debugging information we should generate. We currently support 441 stabs, ECOFF, and DWARF2. 442 443 NOTE! This means debug information about the assembly source code itself 444 and _not_ about possible debug information from a high-level language. 445 This is especially relevant to DWARF2, since the compiler may emit line 446 number directives that the assembler resolves. */ 447 448 enum debug_info_type 449 { 450 DEBUG_UNSPECIFIED, 451 DEBUG_NONE, 452 DEBUG_STABS, 453 DEBUG_ECOFF, 454 DEBUG_DWARF, 455 DEBUG_DWARF2 456 }; 457 458 extern enum debug_info_type debug_type; 459 extern int use_gnu_debug_info_extensions; 460 461 /* Maximum level of macro nesting. */ 462 extern int max_macro_nest; 463 464 /* Verbosity level. */ 465 extern int verbose; 466 467 /* Obstack chunk size. Keep large for efficient space use, make small to 468 increase malloc calls for monitoring memory allocation. */ 469 extern int chunksize; 470 471 struct _pseudo_type 472 { 473 /* assembler mnemonic, lower case, no '.' */ 474 const char *poc_name; 475 /* Do the work */ 476 void (*poc_handler) (int); 477 /* Value to pass to handler */ 478 int poc_val; 479 }; 480 481 typedef struct _pseudo_type pseudo_typeS; 482 483 #ifdef USE_STDARG 484 #if (__GNUC__ >= 2) && !defined(VMS) 485 /* for use with -Wformat */ 486 487 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6 488 /* Support for double underscores in attribute names was added in gcc 489 2.6, so avoid them if we are using an earlier version. */ 490 #define __printf__ printf 491 #define __format__ format 492 #endif 493 494 #define PRINTF_LIKE(FCN) \ 495 void FCN (const char *format, ...) \ 496 __attribute__ ((__format__ (__printf__, 1, 2))) 497 #define PRINTF_WHERE_LIKE(FCN) \ 498 void FCN (char *file, unsigned int line, const char *format, ...) \ 499 __attribute__ ((__format__ (__printf__, 3, 4))) 500 501 #else /* __GNUC__ < 2 || defined(VMS) */ 502 503 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...) 504 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \ 505 unsigned int line, \ 506 const char *format, ...) 507 508 #endif /* __GNUC__ < 2 || defined(VMS) */ 509 510 #else /* ! USE_STDARG */ 511 512 #define PRINTF_LIKE(FCN) void FCN () 513 #define PRINTF_WHERE_LIKE(FCN) void FCN () 514 515 #endif /* ! USE_STDARG */ 516 517 PRINTF_LIKE (as_bad); 518 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN; 519 PRINTF_LIKE (as_tsktsk); 520 PRINTF_LIKE (as_warn); 521 PRINTF_WHERE_LIKE (as_bad_where); 522 PRINTF_WHERE_LIKE (as_warn_where); 523 524 void as_assert (const char *, int, const char *); 525 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 526 void sprint_value (char *, addressT); 527 int had_errors (void); 528 int had_warnings (void); 529 void as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 530 void as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 531 void print_version_id (void); 532 char * app_push (void); 533 char * atof_ieee (char *, int, LITTLENUM_TYPE *); 534 char * input_scrub_include_file (char *, char *); 535 void input_scrub_insert_line (const char *); 536 void input_scrub_insert_file (char *); 537 char * input_scrub_new_file (char *); 538 char * input_scrub_next_buffer (char **bufp); 539 int do_scrub_chars (int (*get) (char *, int), char *, int); 540 int gen_to_words (LITTLENUM_TYPE *, int, long); 541 int had_err (void); 542 int ignore_input (void); 543 void cond_finish_check (int); 544 void cond_exit_macro (int); 545 int seen_at_least_1_file (void); 546 void app_pop (char *); 547 void as_perror (const char *, const char *); 548 void as_where (char **, unsigned int *); 549 void bump_line_counters (void); 550 void do_scrub_begin (int); 551 void input_scrub_begin (void); 552 void input_scrub_close (void); 553 void input_scrub_end (void); 554 int new_logical_line (char *, int); 555 void subsegs_begin (void); 556 void subseg_change (segT, int); 557 segT subseg_new (const char *, subsegT); 558 segT subseg_force_new (const char *, subsegT); 559 void subseg_set (segT, subsegT); 560 int subseg_text_p (segT); 561 int seg_not_empty_p (segT); 562 void start_dependencies (char *); 563 void register_dependency (char *); 564 void print_dependencies (void); 565 segT subseg_get (const char *, int); 566 567 struct expressionS; 568 struct fix; 569 typedef struct symbol symbolS; 570 typedef struct frag fragS; 571 572 /* literal.c */ 573 valueT add_to_literal_pool (symbolS *, valueT, segT, int); 574 575 int check_eh_frame (struct expressionS *, unsigned int *); 576 int eh_frame_estimate_size_before_relax (fragS *); 577 int eh_frame_relax_frag (fragS *); 578 void eh_frame_convert_frag (fragS *); 579 int generic_force_reloc (struct fix *); 580 581 #include "expr.h" /* Before targ-*.h */ 582 583 /* This one starts the chain of target dependant headers. */ 584 #include "targ-env.h" 585 586 #ifdef OBJ_MAYBE_ELF 587 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour) 588 #else 589 #ifdef OBJ_ELF 590 #define IS_ELF 1 591 #else 592 #define IS_ELF 0 593 #endif 594 #endif 595 596 #include "write.h" 597 #include "frags.h" 598 #include "hash.h" 599 #include "read.h" 600 #include "symbols.h" 601 602 #include "tc.h" 603 #include "obj.h" 604 605 #ifdef USE_EMULATIONS 606 #include "emul.h" 607 #endif 608 #include "listing.h" 609 610 #ifdef TC_M68K 611 /* True if we are assembling in m68k MRI mode. */ 612 COMMON int flag_m68k_mri; 613 #define DOLLAR_AMBIGU flag_m68k_mri 614 #else 615 #define flag_m68k_mri 0 616 #endif 617 618 #ifdef WARN_COMMENTS 619 COMMON int warn_comment; 620 COMMON unsigned int found_comment; 621 COMMON char * found_comment_file; 622 #endif 623 624 #ifndef DOLLAR_AMBIGU 625 #define DOLLAR_AMBIGU 0 626 #endif 627 628 #ifndef NUMBERS_WITH_SUFFIX 629 #define NUMBERS_WITH_SUFFIX 0 630 #endif 631 632 #ifndef LOCAL_LABELS_DOLLAR 633 #define LOCAL_LABELS_DOLLAR 0 634 #endif 635 636 #ifndef LOCAL_LABELS_FB 637 #define LOCAL_LABELS_FB 0 638 #endif 639 640 #ifndef LABELS_WITHOUT_COLONS 641 #define LABELS_WITHOUT_COLONS 0 642 #endif 643 644 #ifndef NO_PSEUDO_DOT 645 #define NO_PSEUDO_DOT 0 646 #endif 647 648 #ifndef TEXT_SECTION_NAME 649 #define TEXT_SECTION_NAME ".text" 650 #define DATA_SECTION_NAME ".data" 651 #define BSS_SECTION_NAME ".bss" 652 #endif 653 654 #ifndef OCTETS_PER_BYTE_POWER 655 #define OCTETS_PER_BYTE_POWER 0 656 #endif 657 #ifndef OCTETS_PER_BYTE 658 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER) 659 #endif 660 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER) 661 #error "Octets per byte conflicts with its power-of-two definition!" 662 #endif 663 664 #endif /* GAS */ 665