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 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 3, or (at your option) 11 any later version. 12 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. 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 */ 22 23 #ifndef GAS 24 #define GAS 1 25 /* I think this stuff is largely out of date.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 41 /* This is the code recommended in the autoconf documentation, almost 42 verbatim. If it doesn't work for you, let me know, and notify 43 djm@gnu.ai.mit.edu as well. */ 44 /* Added void* version for STDC case. This is to be compatible with 45 the declaration in bison.simple, used for m68k operand parsing. 46 --KR 1995.08.08 */ 47 /* Force void* decl for hpux. This is what Bison uses. --KR 1995.08.16 */ 48 49 #ifndef __GNUC__ 50 # if HAVE_ALLOCA_H 51 # include <alloca.h> 52 # else 53 # ifdef _AIX 54 /* Indented so that pre-ansi C compilers will ignore it, rather than 55 choke on it. Some versions of AIX require this to be the first 56 thing in the file. */ 57 #pragma alloca 58 # else 59 # ifndef alloca /* predefined by HP cc +Olibcalls */ 60 # if !defined (__STDC__) && !defined (__hpux) 61 extern char *alloca (); 62 # else 63 extern void *alloca (); 64 # endif /* __STDC__, __hpux */ 65 # endif /* alloca */ 66 # endif /* _AIX */ 67 # endif /* HAVE_ALLOCA_H */ 68 #endif /* __GNUC__ */ 69 70 /* Prefer varargs for non-ANSI compiler, since some will barf if the 71 ellipsis definition is used with a no-arguments declaration. */ 72 #if defined (HAVE_VARARGS_H) && !defined (__STDC__) 73 #undef HAVE_STDARG_H 74 #endif 75 76 #if defined (HAVE_STDARG_H) 77 #define USE_STDARG 78 #endif 79 #if !defined (USE_STDARG) && defined (HAVE_VARARGS_H) 80 #define USE_VARARGS 81 #endif 82 83 /* Now, tend to the rest of the configuration. */ 84 85 /* System include files first... */ 86 #include <stdio.h> 87 #ifdef HAVE_STRING_H 88 #include <string.h> 89 #else 90 #ifdef HAVE_STRINGS_H 91 #include <strings.h> 92 #endif 93 #endif 94 #ifdef HAVE_STDLIB_H 95 #include <stdlib.h> 96 #endif 97 #ifdef HAVE_UNISTD_H 98 #include <unistd.h> 99 #endif 100 #ifdef HAVE_SYS_TYPES_H 101 /* for size_t, pid_t */ 102 #include <sys/types.h> 103 #endif 104 105 #ifdef HAVE_ERRNO_H 106 #include <errno.h> 107 #endif 108 109 #ifdef USE_STDARG 110 #include <stdarg.h> 111 #endif 112 113 #ifdef USE_VARARGS 114 #include <varargs.h> 115 #endif 116 117 #if !defined (USE_STDARG) && !defined (USE_VARARGS) 118 /* Roll our own. */ 119 #define va_alist REST 120 #define va_dcl 121 typedef int * va_list; 122 #define va_start(ARGS) ARGS = &REST 123 #define va_end(ARGS) 124 #endif 125 126 #include "getopt.h" 127 /* The first getopt value for machine-independent long options. 128 150 isn't special; it's just an arbitrary non-ASCII char value. */ 129 #define OPTION_STD_BASE 150 130 /* The first getopt value for machine-dependent long options. 131 190 gives the standard options room to grow. */ 132 #define OPTION_MD_BASE 190 133 134 #ifdef DEBUG 135 #undef NDEBUG 136 #endif 137 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) 138 #define __PRETTY_FUNCTION__ ((char*)0) 139 #endif 140 #define assert(P) \ 141 ((void) ((P) ? 0 : (as_assert (__FILE__, __LINE__, __PRETTY_FUNCTION__), 0))) 142 #undef abort 143 #define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__) 144 145 /* Now GNU header files... */ 146 #include "ansidecl.h" 147 #include "bfd.h" 148 #include "libiberty.h" 149 150 /* Define the standard progress macros. */ 151 #include "progress.h" 152 153 /* This doesn't get taken care of anywhere. */ 154 #ifndef __MWERKS__ /* Metrowerks C chokes on the "defined (inline)" */ 155 #if !defined (__GNUC__) && !defined (inline) 156 #define inline 157 #endif 158 #endif /* !__MWERKS__ */ 159 160 /* Other stuff from config.h. */ 161 #ifdef NEED_DECLARATION_ENVIRON 162 extern char **environ; 163 #endif 164 #ifdef NEED_DECLARATION_ERRNO 165 extern int errno; 166 #endif 167 #ifdef NEED_DECLARATION_FFS 168 extern int ffs (int); 169 #endif 170 #ifdef NEED_DECLARATION_FREE 171 extern void free (); 172 #endif 173 #ifdef NEED_DECLARATION_MALLOC 174 extern void *malloc (); 175 extern void *realloc (); 176 #endif 177 #ifdef NEED_DECLARATION_STRSTR 178 extern char *strstr (); 179 #endif 180 181 #if !HAVE_DECL_VSNPRINTF 182 extern int vsnprintf(char *, size_t, const char *, va_list); 183 #endif 184 185 /* This is needed for VMS. */ 186 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE) 187 #define unlink remove 188 #endif 189 190 /* Hack to make "gcc -Wall" not complain about obstack macros. */ 191 #if !defined (memcpy) && !defined (bcopy) 192 #define bcopy(src,dest,size) memcpy (dest, src, size) 193 #endif 194 195 /* Make Saber happier on obstack.h. */ 196 #ifdef SABER 197 #undef __PTR_TO_INT 198 #define __PTR_TO_INT(P) ((int) (P)) 199 #undef __INT_TO_PTR 200 #define __INT_TO_PTR(P) ((char *) (P)) 201 #endif 202 203 #ifndef __LINE__ 204 #define __LINE__ "unknown" 205 #endif /* __LINE__ */ 206 207 #ifndef __FILE__ 208 #define __FILE__ "unknown" 209 #endif /* __FILE__ */ 210 211 #ifndef FOPEN_WB 212 #ifdef USE_BINARY_FOPEN 213 #include "fopen-bin.h" 214 #else 215 #include "fopen-same.h" 216 #endif 217 #endif 218 219 #ifndef EXIT_SUCCESS 220 #define EXIT_SUCCESS 0 221 #define EXIT_FAILURE 1 222 #endif 223 224 #ifndef SEEK_SET 225 #define SEEK_SET 0 226 #endif 227 228 #define obstack_chunk_alloc xmalloc 229 #define obstack_chunk_free xfree 230 231 #define xfree free 232 233 #include "asintl.h" 234 235 #define BAD_CASE(val) \ 236 { \ 237 as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \ 238 (long) val, __LINE__, __FILE__); \ 239 } 240 241 #include "flonum.h" 242 243 /* These are assembler-wide concepts */ 244 245 extern bfd *stdoutput; 246 typedef bfd_vma addressT; 247 typedef bfd_signed_vma offsetT; 248 249 /* Type of symbol value, etc. For use in prototypes. */ 250 typedef addressT valueT; 251 252 #ifndef COMMON 253 #ifdef TEST 254 #define COMMON /* Declare our COMMONs storage here. */ 255 #else 256 #define COMMON extern /* Our commons live elsewhere. */ 257 #endif 258 #endif 259 /* COMMON now defined */ 260 261 #ifndef ENABLE_CHECKING 262 #define ENABLE_CHECKING 0 263 #endif 264 265 #if ENABLE_CHECKING || defined (DEBUG) 266 #ifndef know 267 #define know(p) assert(p) /* Verify our assumptions! */ 268 #endif /* not yet defined */ 269 #else 270 #define know(p) /* know() checks are no-op.ed */ 271 #endif 272 273 /* input_scrub.c */ 274 275 /* Supplies sanitised buffers to read.c. 276 Also understands printing line-number part of error messages. */ 277 278 /* subsegs.c Sub-segments. Also, segment(=expression type)s.*/ 279 280 typedef asection *segT; 281 #define SEG_NORMAL(SEG) ( (SEG) != absolute_section \ 282 && (SEG) != undefined_section \ 283 && (SEG) != reg_section \ 284 && (SEG) != expr_section) 285 typedef int subsegT; 286 287 /* What subseg we are accessing now? */ 288 COMMON subsegT now_subseg; 289 290 /* Segment our instructions emit to. */ 291 COMMON segT now_seg; 292 293 #define segment_name(SEG) bfd_get_section_name (stdoutput, SEG) 294 295 extern segT reg_section, expr_section; 296 /* Shouldn't these be eliminated someday? */ 297 extern segT text_section, data_section, bss_section; 298 #define absolute_section bfd_abs_section_ptr 299 #define undefined_section bfd_und_section_ptr 300 301 enum _relax_state 302 { 303 /* Dummy frag used by listing code. */ 304 rs_dummy = 0, 305 306 /* Variable chars to be repeated fr_offset times. 307 Fr_symbol unused. Used with fr_offset == 0 for a 308 constant length frag. */ 309 rs_fill, 310 311 /* Align. The fr_offset field holds the power of 2 to which to 312 align. The fr_var field holds the number of characters in the 313 fill pattern. The fr_subtype field holds the maximum number of 314 bytes to skip when aligning, or 0 if there is no maximum. */ 315 rs_align, 316 317 /* Align code. The fr_offset field holds the power of 2 to which 318 to align. This type is only generated by machine specific 319 code, which is normally responsible for handling the fill 320 pattern. The fr_subtype field holds the maximum number of 321 bytes to skip when aligning, or 0 if there is no maximum. */ 322 rs_align_code, 323 324 /* Test for alignment. Like rs_align, but used by several targets 325 to warn if data is not properly aligned. */ 326 rs_align_test, 327 328 /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill 329 character. */ 330 rs_org, 331 332 #ifndef WORKING_DOT_WORD 333 /* JF: gunpoint */ 334 rs_broken_word, 335 #endif 336 337 /* Machine specific relaxable (or similarly alterable) instruction. */ 338 rs_machine_dependent, 339 340 /* .space directive with expression operand that needs to be computed 341 later. Similar to rs_org, but different. 342 fr_symbol: operand 343 1 variable char: fill character */ 344 rs_space, 345 346 /* A DWARF leb128 value; only ELF uses this. The subtype is 0 for 347 unsigned, 1 for signed. */ 348 rs_leb128, 349 350 /* Exception frame information which we may be able to optimize. */ 351 rs_cfa, 352 353 /* Cross-fragment dwarf2 line number optimization. */ 354 rs_dwarf2dbg 355 }; 356 357 typedef enum _relax_state relax_stateT; 358 359 /* This type is used in prototypes, so it can't be a type that will be 360 widened for argument passing. */ 361 typedef unsigned int relax_substateT; 362 363 /* Enough bits for address, but still an integer type. 364 Could be a problem, cross-assembling for 64-bit machines. */ 365 typedef addressT relax_addressT; 366 367 struct relax_type 368 { 369 /* Forward reach. Signed number. > 0. */ 370 offsetT rlx_forward; 371 /* Backward reach. Signed number. < 0. */ 372 offsetT rlx_backward; 373 374 /* Bytes length of this address. */ 375 unsigned char rlx_length; 376 377 /* Next longer relax-state. 0 means there is no 'next' relax-state. */ 378 relax_substateT rlx_more; 379 }; 380 381 typedef struct relax_type relax_typeS; 382 383 /* main program "as.c" (command arguments etc). */ 384 385 COMMON unsigned char flag_no_comments; /* -f */ 386 COMMON unsigned char flag_debug; /* -D */ 387 COMMON unsigned char flag_signed_overflow_ok; /* -J */ 388 #ifndef WORKING_DOT_WORD 389 COMMON unsigned char flag_warn_displacement; /* -K */ 390 #endif 391 392 /* True if local symbols should be retained. */ 393 COMMON int flag_keep_locals; /* -L */ 394 395 /* True if we are assembling in MRI mode. */ 396 COMMON int flag_mri; 397 398 /* Should the data section be made read-only and appended to the text 399 section? */ 400 COMMON unsigned char flag_readonly_data_in_text; /* -R */ 401 402 /* True if warnings should be inhibited. */ 403 COMMON int flag_no_warnings; /* -W */ 404 405 /* True if warnings count as errors. */ 406 COMMON int flag_fatal_warnings; /* --fatal-warnings */ 407 408 /* True if we should attempt to generate output even if non-fatal errors 409 are detected. */ 410 COMMON unsigned char flag_always_generate_output; /* -Z */ 411 412 /* This is true if the assembler should output time and space usage. */ 413 COMMON unsigned char flag_print_statistics; 414 415 /* True if local absolute symbols are to be stripped. */ 416 COMMON int flag_strip_local_absolute; 417 418 /* True if we should generate a traditional format object file. */ 419 COMMON int flag_traditional_format; 420 421 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 422 COMMON int flag_execstack; 423 424 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */ 425 COMMON int flag_noexecstack; 426 427 /* name of emitted object file */ 428 COMMON char *out_file_name; 429 430 /* name of file defining extensions to the basic instruction set */ 431 COMMON char *insttbl_file_name; 432 433 /* TRUE if we need a second pass. */ 434 COMMON int need_pass_2; 435 436 /* TRUE if we should do no relaxing, and 437 leave lots of padding. */ 438 COMMON int linkrelax; 439 440 /* TRUE if we should produce a listing. */ 441 extern int listing; 442 443 /* Type of debugging information we should generate. We currently support 444 stabs, ECOFF, and DWARF2. 445 446 NOTE! This means debug information about the assembly source code itself 447 and _not_ about possible debug information from a high-level language. 448 This is especially relevant to DWARF2, since the compiler may emit line 449 number directives that the assembler resolves. */ 450 451 enum debug_info_type 452 { 453 DEBUG_UNSPECIFIED, 454 DEBUG_NONE, 455 DEBUG_STABS, 456 DEBUG_ECOFF, 457 DEBUG_DWARF, 458 DEBUG_DWARF2 459 }; 460 461 extern enum debug_info_type debug_type; 462 extern int use_gnu_debug_info_extensions; 463 464 /* Maximum level of macro nesting. */ 465 extern int max_macro_nest; 466 467 /* Verbosity level. */ 468 extern int verbose; 469 470 /* Obstack chunk size. Keep large for efficient space use, make small to 471 increase malloc calls for monitoring memory allocation. */ 472 extern int chunksize; 473 474 struct _pseudo_type 475 { 476 /* assembler mnemonic, lower case, no '.' */ 477 const char *poc_name; 478 /* Do the work */ 479 void (*poc_handler) (int); 480 /* Value to pass to handler */ 481 int poc_val; 482 }; 483 484 typedef struct _pseudo_type pseudo_typeS; 485 486 #ifdef USE_STDARG 487 #if (__GNUC__ >= 2) && !defined(VMS) 488 /* for use with -Wformat */ 489 490 #if __GNUC__ == 2 && __GNUC_MINOR__ < 6 491 /* Support for double underscores in attribute names was added in gcc 492 2.6, so avoid them if we are using an earlier version. */ 493 #define __printf__ printf 494 #define __format__ format 495 #endif 496 497 #define PRINTF_LIKE(FCN) \ 498 void FCN (const char *format, ...) \ 499 __attribute__ ((__format__ (__printf__, 1, 2))) 500 #define PRINTF_WHERE_LIKE(FCN) \ 501 void FCN (char *file, unsigned int line, const char *format, ...) \ 502 __attribute__ ((__format__ (__printf__, 3, 4))) 503 504 #else /* __GNUC__ < 2 || defined(VMS) */ 505 506 #define PRINTF_LIKE(FCN) void FCN (const char *format, ...) 507 #define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, \ 508 unsigned int line, \ 509 const char *format, ...) 510 511 #endif /* __GNUC__ < 2 || defined(VMS) */ 512 513 #else /* ! USE_STDARG */ 514 515 #define PRINTF_LIKE(FCN) void FCN () 516 #define PRINTF_WHERE_LIKE(FCN) void FCN () 517 518 #endif /* ! USE_STDARG */ 519 520 PRINTF_LIKE (as_bad); 521 PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN; 522 PRINTF_LIKE (as_tsktsk); 523 PRINTF_LIKE (as_warn); 524 PRINTF_WHERE_LIKE (as_bad_where); 525 PRINTF_WHERE_LIKE (as_warn_where); 526 527 void as_assert (const char *, int, const char *); 528 void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 529 void sprint_value (char *, addressT); 530 int had_errors (void); 531 int had_warnings (void); 532 void as_warn_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 533 void as_bad_value_out_of_range (char *, offsetT, offsetT, offsetT, char *, unsigned); 534 void print_version_id (void); 535 char * app_push (void); 536 char * atof_ieee (char *, int, LITTLENUM_TYPE *); 537 char * ieee_md_atof (int, char *, int *, bfd_boolean); 538 char * vax_md_atof (int, char *, int *); 539 char * input_scrub_include_file (char *, char *); 540 void input_scrub_insert_line (const char *); 541 void input_scrub_insert_file (char *); 542 char * input_scrub_new_file (char *); 543 char * input_scrub_next_buffer (char **bufp); 544 int do_scrub_chars (int (*get) (char *, int), char *, int); 545 int gen_to_words (LITTLENUM_TYPE *, int, long); 546 int had_err (void); 547 int ignore_input (void); 548 void cond_finish_check (int); 549 void cond_exit_macro (int); 550 int seen_at_least_1_file (void); 551 void app_pop (char *); 552 void as_where (char **, unsigned int *); 553 void bump_line_counters (void); 554 void do_scrub_begin (int); 555 void input_scrub_begin (void); 556 void input_scrub_close (void); 557 void input_scrub_end (void); 558 int new_logical_line (char *, int); 559 int new_logical_line_flags (char *, int, int); 560 void subsegs_begin (void); 561 void subseg_change (segT, int); 562 segT subseg_new (const char *, subsegT); 563 segT subseg_force_new (const char *, subsegT); 564 void subseg_set (segT, subsegT); 565 int subseg_text_p (segT); 566 int seg_not_empty_p (segT); 567 void start_dependencies (char *); 568 void register_dependency (char *); 569 void print_dependencies (void); 570 segT subseg_get (const char *, int); 571 572 const char *remap_debug_filename (const char *); 573 void add_debug_prefix_map (const char *); 574 575 struct expressionS; 576 struct fix; 577 typedef struct symbol symbolS; 578 typedef struct frag fragS; 579 580 /* literal.c */ 581 valueT add_to_literal_pool (symbolS *, valueT, segT, int); 582 583 int check_eh_frame (struct expressionS *, unsigned int *); 584 int eh_frame_estimate_size_before_relax (fragS *); 585 int eh_frame_relax_frag (fragS *); 586 void eh_frame_convert_frag (fragS *); 587 int generic_force_reloc (struct fix *); 588 589 #include "expr.h" /* Before targ-*.h */ 590 591 /* This one starts the chain of target dependant headers. */ 592 #include "targ-env.h" 593 594 #ifdef OBJ_MAYBE_ELF 595 #define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour) 596 #else 597 #ifdef OBJ_ELF 598 #define IS_ELF 1 599 #else 600 #define IS_ELF 0 601 #endif 602 #endif 603 604 #include "write.h" 605 #include "frags.h" 606 #include "hash.h" 607 #include "read.h" 608 #include "symbols.h" 609 610 #include "tc.h" 611 #include "obj.h" 612 613 #ifdef USE_EMULATIONS 614 #include "emul.h" 615 #endif 616 #include "listing.h" 617 618 #ifdef H_TICK_HEX 619 extern int enable_h_tick_hex; 620 #endif 621 622 #ifdef TC_M68K 623 /* True if we are assembling in m68k MRI mode. */ 624 COMMON int flag_m68k_mri; 625 #define DOLLAR_AMBIGU flag_m68k_mri 626 #else 627 #define flag_m68k_mri 0 628 #endif 629 630 #ifdef WARN_COMMENTS 631 COMMON int warn_comment; 632 COMMON unsigned int found_comment; 633 COMMON char * found_comment_file; 634 #endif 635 636 #ifndef DOLLAR_AMBIGU 637 #define DOLLAR_AMBIGU 0 638 #endif 639 640 #ifndef NUMBERS_WITH_SUFFIX 641 #define NUMBERS_WITH_SUFFIX 0 642 #endif 643 644 #ifndef LOCAL_LABELS_DOLLAR 645 #define LOCAL_LABELS_DOLLAR 0 646 #endif 647 648 #ifndef LOCAL_LABELS_FB 649 #define LOCAL_LABELS_FB 0 650 #endif 651 652 #ifndef LABELS_WITHOUT_COLONS 653 #define LABELS_WITHOUT_COLONS 0 654 #endif 655 656 #ifndef NO_PSEUDO_DOT 657 #define NO_PSEUDO_DOT 0 658 #endif 659 660 #ifndef TEXT_SECTION_NAME 661 #define TEXT_SECTION_NAME ".text" 662 #define DATA_SECTION_NAME ".data" 663 #define BSS_SECTION_NAME ".bss" 664 #endif 665 666 #ifndef OCTETS_PER_BYTE_POWER 667 #define OCTETS_PER_BYTE_POWER 0 668 #endif 669 #ifndef OCTETS_PER_BYTE 670 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER) 671 #endif 672 #if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER) 673 #error "Octets per byte conflicts with its power-of-two definition!" 674 #endif 675 676 #endif /* GAS */ 677