1 /* as.c - GAS main program. 2 Copyright (C) 1987-2020 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 /* Main program for AS; a 32-bit assembler of GNU. 22 Understands command arguments. 23 Has a few routines that don't fit in other modules because they 24 are shared. 25 26 bugs 27 28 : initialisers 29 Since no-one else says they will support them in future: I 30 don't support them now. */ 31 32 #define COMMON 33 34 /* Disable code to set FAKE_LABEL_NAME in obj-multi.h, to avoid circular 35 reference. */ 36 #define INITIALIZING_EMULS 37 38 #include "as.h" 39 #include "subsegs.h" 40 #include "output-file.h" 41 #include "sb.h" 42 #include "macro.h" 43 #include "dwarf2dbg.h" 44 #include "dw2gencfi.h" 45 #include "bfdver.h" 46 #include "write.h" 47 48 #ifdef HAVE_ITBL_CPU 49 #include "itbl-ops.h" 50 #else 51 #define itbl_init() 52 #endif 53 54 #ifdef USING_CGEN 55 /* Perform any cgen specific initialisation for gas. */ 56 extern void gas_cgen_begin (void); 57 #endif 58 59 /* We build a list of defsyms as we read the options, and then define 60 them after we have initialized everything. */ 61 struct defsym_list 62 { 63 struct defsym_list *next; 64 char *name; 65 valueT value; 66 }; 67 68 69 /* True if a listing is wanted. */ 70 int listing; 71 72 /* Type of debugging to generate. */ 73 enum debug_info_type debug_type = DEBUG_UNSPECIFIED; 74 int use_gnu_debug_info_extensions = 0; 75 76 #ifndef MD_DEBUG_FORMAT_SELECTOR 77 #define MD_DEBUG_FORMAT_SELECTOR NULL 78 #endif 79 static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR; 80 81 /* Maximum level of macro nesting. */ 82 int max_macro_nest = 100; 83 84 /* argv[0] */ 85 static char * myname; 86 87 /* The default obstack chunk size. If we set this to zero, the 88 obstack code will use whatever will fit in a 4096 byte block. */ 89 int chunksize = 0; 90 91 /* To monitor memory allocation more effectively, make this non-zero. 92 Then the chunk sizes for gas and bfd will be reduced. */ 93 int debug_memory = 0; 94 95 /* Enable verbose mode. */ 96 int verbose = 0; 97 98 /* Which version of DWARF CIE to produce. This default value of -1 99 indicates that this value has not been set yet, a default value is 100 provided in dwarf2_init. A different value can also be supplied by the 101 command line flag --gdwarf-cie-version, or by a target in 102 MD_AFTER_PARSE_ARGS. */ 103 int flag_dwarf_cie_version = -1; 104 105 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 106 int flag_use_elf_stt_common = DEFAULT_GENERATE_ELF_STT_COMMON; 107 bfd_boolean flag_generate_build_notes = DEFAULT_GENERATE_BUILD_NOTES; 108 #endif 109 110 /* Keep the output file. */ 111 static int keep_it = 0; 112 113 segT reg_section; 114 segT expr_section; 115 segT text_section; 116 segT data_section; 117 segT bss_section; 118 119 /* Name of listing file. */ 120 static char *listing_filename = NULL; 121 122 static struct defsym_list *defsyms; 123 124 #ifdef HAVE_ITBL_CPU 125 /* Keep a record of the itbl files we read in. */ 126 struct itbl_file_list 127 { 128 struct itbl_file_list *next; 129 char *name; 130 }; 131 static struct itbl_file_list *itbl_files; 132 #endif 133 134 static long start_time; 135 136 static int flag_macro_alternate; 137 138 139 #ifdef USE_EMULATIONS 140 #define EMULATION_ENVIRON "AS_EMULATION" 141 142 extern struct emulation mipsbelf, mipslelf, mipself; 143 extern struct emulation i386coff, i386elf, i386aout; 144 extern struct emulation crisaout, criself; 145 146 static struct emulation *const emulations[] = { EMULATIONS }; 147 static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); 148 149 static void 150 select_emulation_mode (int argc, char **argv) 151 { 152 int i; 153 char *p; 154 const char *em = NULL; 155 156 for (i = 1; i < argc; i++) 157 if (!strncmp ("--em", argv[i], 4)) 158 break; 159 160 if (i == argc) 161 goto do_default; 162 163 p = strchr (argv[i], '='); 164 if (p) 165 p++; 166 else 167 p = argv[i + 1]; 168 169 if (!p || !*p) 170 as_fatal (_("missing emulation mode name")); 171 em = p; 172 173 do_default: 174 if (em == 0) 175 em = getenv (EMULATION_ENVIRON); 176 if (em == 0) 177 em = DEFAULT_EMULATION; 178 179 if (em) 180 { 181 for (i = 0; i < n_emulations; i++) 182 if (!strcmp (emulations[i]->name, em)) 183 break; 184 if (i == n_emulations) 185 as_fatal (_("unrecognized emulation name `%s'"), em); 186 this_emulation = emulations[i]; 187 } 188 else 189 this_emulation = emulations[0]; 190 191 this_emulation->init (); 192 } 193 194 const char * 195 default_emul_bfd_name (void) 196 { 197 abort (); 198 return NULL; 199 } 200 201 void 202 common_emul_init (void) 203 { 204 this_format = this_emulation->format; 205 206 if (this_emulation->leading_underscore == 2) 207 this_emulation->leading_underscore = this_format->dfl_leading_underscore; 208 209 if (this_emulation->default_endian != 2) 210 target_big_endian = this_emulation->default_endian; 211 212 if (this_emulation->fake_label_name == 0) 213 { 214 if (this_emulation->leading_underscore) 215 this_emulation->fake_label_name = FAKE_LABEL_NAME; 216 else 217 /* What other parameters should we test? */ 218 this_emulation->fake_label_name = "." FAKE_LABEL_NAME; 219 } 220 } 221 #endif 222 223 void 224 print_version_id (void) 225 { 226 static int printed; 227 228 if (printed) 229 return; 230 printed = 1; 231 232 fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"), 233 VERSION, TARGET_ALIAS, BFD_VERSION_STRING); 234 } 235 236 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 237 enum compressed_debug_section_type flag_compress_debug 238 = COMPRESS_DEBUG_GABI_ZLIB; 239 #endif 240 241 static void 242 show_usage (FILE * stream) 243 { 244 fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); 245 246 fprintf (stream, _("\ 247 Options:\n\ 248 -a[sub-option...] turn on listings\n\ 249 Sub-options [default hls]:\n\ 250 c omit false conditionals\n\ 251 d omit debugging directives\n\ 252 g include general info\n\ 253 h include high-level source\n\ 254 l include assembly\n\ 255 m include macro expansions\n\ 256 n omit forms processing\n\ 257 s include symbols\n\ 258 =FILE list to FILE (must be last sub-option)\n")); 259 260 fprintf (stream, _("\ 261 --alternate initially turn on alternate macro syntax\n")); 262 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG 263 fprintf (stream, _("\ 264 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\ 265 compress DWARF debug sections using zlib [default]\n")); 266 fprintf (stream, _("\ 267 --nocompress-debug-sections\n\ 268 don't compress DWARF debug sections\n")); 269 #else 270 fprintf (stream, _("\ 271 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\ 272 compress DWARF debug sections using zlib\n")); 273 fprintf (stream, _("\ 274 --nocompress-debug-sections\n\ 275 don't compress DWARF debug sections [default]\n")); 276 #endif 277 fprintf (stream, _("\ 278 -D produce assembler debugging messages\n")); 279 fprintf (stream, _("\ 280 --debug-prefix-map OLD=NEW\n\ 281 map OLD to NEW in debug information\n")); 282 fprintf (stream, _("\ 283 --defsym SYM=VAL define symbol SYM to given value\n")); 284 #ifdef USE_EMULATIONS 285 { 286 int i; 287 const char *def_em; 288 289 fprintf (stream, "\ 290 --em=["); 291 for (i = 0; i < n_emulations - 1; i++) 292 fprintf (stream, "%s | ", emulations[i]->name); 293 fprintf (stream, "%s]\n", emulations[i]->name); 294 295 def_em = getenv (EMULATION_ENVIRON); 296 if (!def_em) 297 def_em = DEFAULT_EMULATION; 298 fprintf (stream, _("\ 299 emulate output (default %s)\n"), def_em); 300 } 301 #endif 302 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 303 fprintf (stream, _("\ 304 --execstack require executable stack for this object\n")); 305 fprintf (stream, _("\ 306 --noexecstack don't require executable stack for this object\n")); 307 fprintf (stream, _("\ 308 --size-check=[error|warning]\n\ 309 ELF .size directive check (default --size-check=error)\n")); 310 fprintf (stream, _("\ 311 --elf-stt-common=[no|yes] ")); 312 if (DEFAULT_GENERATE_ELF_STT_COMMON) 313 fprintf (stream, _("(default: yes)\n")); 314 else 315 fprintf (stream, _("(default: no)\n")); 316 fprintf (stream, _("\ 317 generate ELF common symbols with STT_COMMON type\n")); 318 fprintf (stream, _("\ 319 --sectname-subst enable section name substitution sequences\n")); 320 321 fprintf (stream, _("\ 322 --generate-missing-build-notes=[no|yes] ")); 323 #if DEFAULT_GENERATE_BUILD_NOTES 324 fprintf (stream, _("(default: yes)\n")); 325 #else 326 fprintf (stream, _("(default: no)\n")); 327 #endif 328 fprintf (stream, _("\ 329 generate GNU Build notes if none are present in the input\n")); 330 #endif /* OBJ_ELF */ 331 332 fprintf (stream, _("\ 333 -f skip whitespace and comment preprocessing\n")); 334 fprintf (stream, _("\ 335 -g --gen-debug generate debugging information\n")); 336 fprintf (stream, _("\ 337 --gstabs generate STABS debugging information\n")); 338 fprintf (stream, _("\ 339 --gstabs+ generate STABS debug info with GNU extensions\n")); 340 fprintf (stream, _("\ 341 --gdwarf-2 generate DWARF2 debugging information\n")); 342 fprintf (stream, _("\ 343 --gdwarf-sections generate per-function section names for DWARF line information\n")); 344 fprintf (stream, _("\ 345 --hash-size=<value> set the hash table size close to <value>\n")); 346 fprintf (stream, _("\ 347 --help show this message and exit\n")); 348 fprintf (stream, _("\ 349 --target-help show target specific options\n")); 350 fprintf (stream, _("\ 351 -I DIR add DIR to search list for .include directives\n")); 352 fprintf (stream, _("\ 353 -J don't warn about signed overflow\n")); 354 fprintf (stream, _("\ 355 -K warn when differences altered for long displacements\n")); 356 fprintf (stream, _("\ 357 -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); 358 fprintf (stream, _("\ 359 -M,--mri assemble in MRI compatibility mode\n")); 360 fprintf (stream, _("\ 361 --MD FILE write dependency information in FILE (default none)\n")); 362 fprintf (stream, _("\ 363 -nocpp ignored\n")); 364 fprintf (stream, _("\ 365 -no-pad-sections do not pad the end of sections to alignment boundaries\n")); 366 fprintf (stream, _("\ 367 -o OBJFILE name the object-file output OBJFILE (default a.out)\n")); 368 fprintf (stream, _("\ 369 -R fold data section into text section\n")); 370 fprintf (stream, _("\ 371 --reduce-memory-overheads \n\ 372 prefer smaller memory use at the cost of longer\n\ 373 assembly times\n")); 374 fprintf (stream, _("\ 375 --statistics print various measured statistics from execution\n")); 376 fprintf (stream, _("\ 377 --strip-local-absolute strip local absolute symbols\n")); 378 fprintf (stream, _("\ 379 --traditional-format Use same format as native assembler when possible\n")); 380 fprintf (stream, _("\ 381 --version print assembler version number and exit\n")); 382 fprintf (stream, _("\ 383 -W --no-warn suppress warnings\n")); 384 fprintf (stream, _("\ 385 --warn don't suppress warnings\n")); 386 fprintf (stream, _("\ 387 --fatal-warnings treat warnings as errors\n")); 388 #ifdef HAVE_ITBL_CPU 389 fprintf (stream, _("\ 390 --itbl INSTTBL extend instruction set to include instructions\n\ 391 matching the specifications defined in file INSTTBL\n")); 392 #endif 393 fprintf (stream, _("\ 394 -w ignored\n")); 395 fprintf (stream, _("\ 396 -X ignored\n")); 397 fprintf (stream, _("\ 398 -Z generate object file even after errors\n")); 399 fprintf (stream, _("\ 400 --listing-lhs-width set the width in words of the output data column of\n\ 401 the listing\n")); 402 fprintf (stream, _("\ 403 --listing-lhs-width2 set the width in words of the continuation lines\n\ 404 of the output data column; ignored if smaller than\n\ 405 the width of the first line\n")); 406 fprintf (stream, _("\ 407 --listing-rhs-width set the max width in characters of the lines from\n\ 408 the source file\n")); 409 fprintf (stream, _("\ 410 --listing-cont-lines set the maximum number of continuation lines used\n\ 411 for the output data column of the listing\n")); 412 fprintf (stream, _("\ 413 @FILE read options from FILE\n")); 414 415 md_show_usage (stream); 416 417 fputc ('\n', stream); 418 419 if (REPORT_BUGS_TO[0] && stream == stdout) 420 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 421 } 422 423 /* Since it is easy to do here we interpret the special arg "-" 424 to mean "use stdin" and we set that argv[] pointing to "". 425 After we have munged argv[], the only things left are source file 426 name(s) and ""(s) denoting stdin. These file names are used 427 (perhaps more than once) later. 428 429 check for new machine-dep cmdline options in 430 md_parse_option definitions in config/tc-*.c. */ 431 432 static void 433 parse_args (int * pargc, char *** pargv) 434 { 435 int old_argc; 436 int new_argc; 437 char ** old_argv; 438 char ** new_argv; 439 /* Starting the short option string with '-' is for programs that 440 expect options and other ARGV-elements in any order and that care about 441 the ordering of the two. We describe each non-option ARGV-element 442 as if it were the argument of an option with character code 1. */ 443 char *shortopts; 444 extern const char *md_shortopts; 445 static const char std_shortopts[] = 446 { 447 '-', 'J', 448 #ifndef WORKING_DOT_WORD 449 /* -K is not meaningful if .word is not being hacked. */ 450 'K', 451 #endif 452 'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'g', ':',':', 'I', ':', 'o', ':', 453 #ifndef VMS 454 /* -v takes an argument on VMS, so we don't make it a generic 455 option. */ 456 'v', 457 #endif 458 'w', 'X', 459 #ifdef HAVE_ITBL_CPU 460 /* New option for extending instruction set (see also --itbl below). */ 461 't', ':', 462 #endif 463 '\0' 464 }; 465 struct option *longopts; 466 extern struct option md_longopts[]; 467 extern size_t md_longopts_size; 468 /* Codes used for the long options with no short synonyms. */ 469 enum option_values 470 { 471 OPTION_HELP = OPTION_STD_BASE, 472 OPTION_NOCPP, 473 OPTION_STATISTICS, 474 OPTION_VERSION, 475 OPTION_DUMPCONFIG, 476 OPTION_VERBOSE, 477 OPTION_EMULATION, 478 OPTION_DEBUG_PREFIX_MAP, 479 OPTION_DEFSYM, 480 OPTION_LISTING_LHS_WIDTH, 481 OPTION_LISTING_LHS_WIDTH2, 482 OPTION_LISTING_RHS_WIDTH, 483 OPTION_LISTING_CONT_LINES, 484 OPTION_DEPFILE, 485 OPTION_GSTABS, 486 OPTION_GSTABS_PLUS, 487 OPTION_GDWARF2, 488 OPTION_GDWARF_SECTIONS, 489 OPTION_GDWARF_CIE_VERSION, 490 OPTION_STRIP_LOCAL_ABSOLUTE, 491 OPTION_TRADITIONAL_FORMAT, 492 OPTION_WARN, 493 OPTION_TARGET_HELP, 494 OPTION_EXECSTACK, 495 OPTION_NOEXECSTACK, 496 OPTION_SIZE_CHECK, 497 OPTION_ELF_STT_COMMON, 498 OPTION_ELF_BUILD_NOTES, 499 OPTION_SECTNAME_SUBST, 500 OPTION_ALTERNATE, 501 OPTION_AL, 502 OPTION_HASH_TABLE_SIZE, 503 OPTION_REDUCE_MEMORY_OVERHEADS, 504 OPTION_WARN_FATAL, 505 OPTION_COMPRESS_DEBUG, 506 OPTION_NOCOMPRESS_DEBUG, 507 OPTION_NO_PAD_SECTIONS /* = STD_BASE + 40 */ 508 /* When you add options here, check that they do 509 not collide with OPTION_MD_BASE. See as.h. */ 510 }; 511 512 static const struct option std_longopts[] = 513 { 514 /* Note: commas are placed at the start of the line rather than 515 the end of the preceding line so that it is simpler to 516 selectively add and remove lines from this list. */ 517 {"alternate", no_argument, NULL, OPTION_ALTERNATE} 518 /* The entry for "a" is here to prevent getopt_long_only() from 519 considering that -a is an abbreviation for --alternate. This is 520 necessary because -a=<FILE> is a valid switch but getopt would 521 normally reject it since --alternate does not take an argument. */ 522 ,{"a", optional_argument, NULL, 'a'} 523 /* Handle -al=<FILE>. */ 524 ,{"al", optional_argument, NULL, OPTION_AL} 525 ,{"compress-debug-sections", optional_argument, NULL, OPTION_COMPRESS_DEBUG} 526 ,{"nocompress-debug-sections", no_argument, NULL, OPTION_NOCOMPRESS_DEBUG} 527 ,{"debug-prefix-map", required_argument, NULL, OPTION_DEBUG_PREFIX_MAP} 528 ,{"defsym", required_argument, NULL, OPTION_DEFSYM} 529 ,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG} 530 ,{"emulation", required_argument, NULL, OPTION_EMULATION} 531 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 532 ,{"execstack", no_argument, NULL, OPTION_EXECSTACK} 533 ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK} 534 ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK} 535 ,{"elf-stt-common", required_argument, NULL, OPTION_ELF_STT_COMMON} 536 ,{"sectname-subst", no_argument, NULL, OPTION_SECTNAME_SUBST} 537 ,{"generate-missing-build-notes", required_argument, NULL, OPTION_ELF_BUILD_NOTES} 538 #endif 539 ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} 540 ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2} 541 /* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2, 542 so we keep it here for backwards compatibility. */ 543 ,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2} 544 ,{"gdwarf-sections", no_argument, NULL, OPTION_GDWARF_SECTIONS} 545 ,{"gdwarf-cie-version", required_argument, NULL, OPTION_GDWARF_CIE_VERSION} 546 ,{"gen-debug", no_argument, NULL, 'g'} 547 ,{"gstabs", no_argument, NULL, OPTION_GSTABS} 548 ,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS} 549 ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE} 550 ,{"help", no_argument, NULL, OPTION_HELP} 551 #ifdef HAVE_ITBL_CPU 552 /* New option for extending instruction set (see also -t above). 553 The "-t file" or "--itbl file" option extends the basic set of 554 valid instructions by reading "file", a text file containing a 555 list of instruction formats. The additional opcodes and their 556 formats are added to the built-in set of instructions, and 557 mnemonics for new registers may also be defined. */ 558 ,{"itbl", required_argument, NULL, 't'} 559 #endif 560 /* getopt allows abbreviations, so we do this to stop it from 561 treating -k as an abbreviation for --keep-locals. Some 562 ports use -k to enable PIC assembly. */ 563 ,{"keep-locals", no_argument, NULL, 'L'} 564 ,{"keep-locals", no_argument, NULL, 'L'} 565 ,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH} 566 ,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2} 567 ,{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH} 568 ,{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES} 569 ,{"MD", required_argument, NULL, OPTION_DEPFILE} 570 ,{"mri", no_argument, NULL, 'M'} 571 ,{"nocpp", no_argument, NULL, OPTION_NOCPP} 572 ,{"no-pad-sections", no_argument, NULL, OPTION_NO_PAD_SECTIONS} 573 ,{"no-warn", no_argument, NULL, 'W'} 574 ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS} 575 ,{"statistics", no_argument, NULL, OPTION_STATISTICS} 576 ,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE} 577 ,{"version", no_argument, NULL, OPTION_VERSION} 578 ,{"verbose", no_argument, NULL, OPTION_VERBOSE} 579 ,{"target-help", no_argument, NULL, OPTION_TARGET_HELP} 580 ,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT} 581 ,{"warn", no_argument, NULL, OPTION_WARN} 582 }; 583 584 /* Construct the option lists from the standard list and the target 585 dependent list. Include space for an extra NULL option and 586 always NULL terminate. */ 587 shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); 588 longopts = (struct option *) xmalloc (sizeof (std_longopts) 589 + md_longopts_size + sizeof (struct option)); 590 memcpy (longopts, std_longopts, sizeof (std_longopts)); 591 memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size); 592 memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size, 593 0, sizeof (struct option)); 594 595 /* Make a local copy of the old argv. */ 596 old_argc = *pargc; 597 old_argv = *pargv; 598 599 /* Initialize a new argv that contains no options. */ 600 new_argv = XNEWVEC (char *, old_argc + 1); 601 new_argv[0] = old_argv[0]; 602 new_argc = 1; 603 new_argv[new_argc] = NULL; 604 605 while (1) 606 { 607 /* getopt_long_only is like getopt_long, but '-' as well as '--' can 608 indicate a long option. */ 609 int longind; 610 int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, 611 &longind); 612 613 if (optc == -1) 614 break; 615 616 switch (optc) 617 { 618 default: 619 /* md_parse_option should return 1 if it recognizes optc, 620 0 if not. */ 621 if (md_parse_option (optc, optarg) != 0) 622 break; 623 /* `-v' isn't included in the general short_opts list, so check for 624 it explicitly here before deciding we've gotten a bad argument. */ 625 if (optc == 'v') 626 { 627 #ifdef VMS 628 /* Telling getopt to treat -v's value as optional can result 629 in it picking up a following filename argument here. The 630 VMS code in md_parse_option can return 0 in that case, 631 but it has no way of pushing the filename argument back. */ 632 if (optarg && *optarg) 633 new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; 634 else 635 #else 636 case 'v': 637 #endif 638 case OPTION_VERBOSE: 639 print_version_id (); 640 verbose = 1; 641 break; 642 } 643 else 644 as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : ""); 645 /* Fall through. */ 646 647 case '?': 648 exit (EXIT_FAILURE); 649 650 case 1: /* File name. */ 651 if (!strcmp (optarg, "-")) 652 optarg = (char *) ""; 653 new_argv[new_argc++] = optarg; 654 new_argv[new_argc] = NULL; 655 break; 656 657 case OPTION_TARGET_HELP: 658 md_show_usage (stdout); 659 exit (EXIT_SUCCESS); 660 661 case OPTION_HELP: 662 show_usage (stdout); 663 exit (EXIT_SUCCESS); 664 665 case OPTION_NOCPP: 666 break; 667 668 case OPTION_NO_PAD_SECTIONS: 669 do_not_pad_sections_to_alignment = 1; 670 break; 671 672 case OPTION_STATISTICS: 673 flag_print_statistics = 1; 674 break; 675 676 case OPTION_STRIP_LOCAL_ABSOLUTE: 677 flag_strip_local_absolute = 1; 678 break; 679 680 case OPTION_TRADITIONAL_FORMAT: 681 flag_traditional_format = 1; 682 break; 683 684 case OPTION_VERSION: 685 /* This output is intended to follow the GNU standards document. */ 686 printf (_("GNU assembler %s\n"), BFD_VERSION_STRING); 687 printf (_("Copyright (C) 2020 Free Software Foundation, Inc.\n")); 688 printf (_("\ 689 This program is free software; you may redistribute it under the terms of\n\ 690 the GNU General Public License version 3 or later.\n\ 691 This program has absolutely no warranty.\n")); 692 #ifdef TARGET_WITH_CPU 693 printf (_("This assembler was configured for a target of `%s' " 694 "and default,\ncpu type `%s'.\n"), 695 TARGET_ALIAS, TARGET_WITH_CPU); 696 #else 697 printf (_("This assembler was configured for a target of `%s'.\n"), 698 TARGET_ALIAS); 699 #endif 700 exit (EXIT_SUCCESS); 701 702 case OPTION_EMULATION: 703 #ifdef USE_EMULATIONS 704 if (strcmp (optarg, this_emulation->name)) 705 as_fatal (_("multiple emulation names specified")); 706 #else 707 as_fatal (_("emulations not handled in this configuration")); 708 #endif 709 break; 710 711 case OPTION_DUMPCONFIG: 712 fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); 713 fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); 714 fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); 715 #ifdef TARGET_OBJ_FORMAT 716 fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); 717 #endif 718 #ifdef TARGET_FORMAT 719 fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); 720 #endif 721 exit (EXIT_SUCCESS); 722 723 case OPTION_COMPRESS_DEBUG: 724 if (optarg) 725 { 726 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 727 if (strcasecmp (optarg, "none") == 0) 728 flag_compress_debug = COMPRESS_DEBUG_NONE; 729 else if (strcasecmp (optarg, "zlib") == 0) 730 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB; 731 else if (strcasecmp (optarg, "zlib-gnu") == 0) 732 flag_compress_debug = COMPRESS_DEBUG_GNU_ZLIB; 733 else if (strcasecmp (optarg, "zlib-gabi") == 0) 734 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB; 735 else 736 as_fatal (_("Invalid --compress-debug-sections option: `%s'"), 737 optarg); 738 #else 739 as_fatal (_("--compress-debug-sections=%s is unsupported"), 740 optarg); 741 #endif 742 } 743 else 744 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB; 745 break; 746 747 case OPTION_NOCOMPRESS_DEBUG: 748 flag_compress_debug = COMPRESS_DEBUG_NONE; 749 break; 750 751 case OPTION_DEBUG_PREFIX_MAP: 752 add_debug_prefix_map (optarg); 753 break; 754 755 case OPTION_DEFSYM: 756 { 757 char *s; 758 valueT i; 759 struct defsym_list *n; 760 761 for (s = optarg; *s != '\0' && *s != '='; s++) 762 ; 763 if (*s == '\0') 764 as_fatal (_("bad defsym; format is --defsym name=value")); 765 *s++ = '\0'; 766 i = bfd_scan_vma (s, (const char **) NULL, 0); 767 n = XNEW (struct defsym_list); 768 n->next = defsyms; 769 n->name = optarg; 770 n->value = i; 771 defsyms = n; 772 } 773 break; 774 775 #ifdef HAVE_ITBL_CPU 776 case 't': 777 { 778 /* optarg is the name of the file containing the instruction 779 formats, opcodes, register names, etc. */ 780 struct itbl_file_list *n; 781 782 if (optarg == NULL) 783 { 784 as_warn (_("no file name following -t option")); 785 break; 786 } 787 788 n = XNEW (struct itbl_file_list); 789 n->next = itbl_files; 790 n->name = optarg; 791 itbl_files = n; 792 793 /* Parse the file and add the new instructions to our internal 794 table. If multiple instruction tables are specified, the 795 information from this table gets appended onto the existing 796 internal table. */ 797 itbl_files->name = xstrdup (optarg); 798 if (itbl_parse (itbl_files->name) != 0) 799 as_fatal (_("failed to read instruction table %s\n"), 800 itbl_files->name); 801 } 802 break; 803 #endif 804 805 case OPTION_DEPFILE: 806 start_dependencies (optarg); 807 break; 808 809 case 'g': 810 /* Some backends, eg Alpha and Mips, use the -g switch for their 811 own purposes. So we check here for an explicit -g and allow 812 the backend to decide if it wants to process it. */ 813 if ( old_argv[optind - 1][1] == 'g' 814 && md_parse_option (optc, optarg)) 815 continue; 816 817 if (md_debug_format_selector) 818 debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions); 819 else if (IS_ELF) 820 debug_type = DEBUG_DWARF2; 821 else 822 debug_type = DEBUG_STABS; 823 break; 824 825 case OPTION_GSTABS_PLUS: 826 use_gnu_debug_info_extensions = 1; 827 /* Fall through. */ 828 case OPTION_GSTABS: 829 debug_type = DEBUG_STABS; 830 break; 831 832 case OPTION_GDWARF2: 833 debug_type = DEBUG_DWARF2; 834 break; 835 836 case OPTION_GDWARF_SECTIONS: 837 flag_dwarf_sections = TRUE; 838 break; 839 840 case OPTION_GDWARF_CIE_VERSION: 841 flag_dwarf_cie_version = atoi (optarg); 842 /* The available CIE versions are 1 (DWARF 2), 3 (DWARF 3), and 4 843 (DWARF 4 and 5). */ 844 if (flag_dwarf_cie_version < 1 845 || flag_dwarf_cie_version == 2 846 || flag_dwarf_cie_version > 4) 847 as_fatal (_("Invalid --gdwarf-cie-version `%s'"), optarg); 848 break; 849 850 case 'J': 851 flag_signed_overflow_ok = 1; 852 break; 853 854 #ifndef WORKING_DOT_WORD 855 case 'K': 856 flag_warn_displacement = 1; 857 break; 858 #endif 859 case 'L': 860 flag_keep_locals = 1; 861 break; 862 863 case OPTION_LISTING_LHS_WIDTH: 864 listing_lhs_width = atoi (optarg); 865 if (listing_lhs_width_second < listing_lhs_width) 866 listing_lhs_width_second = listing_lhs_width; 867 break; 868 case OPTION_LISTING_LHS_WIDTH2: 869 { 870 int tmp = atoi (optarg); 871 872 if (tmp > listing_lhs_width) 873 listing_lhs_width_second = tmp; 874 } 875 break; 876 case OPTION_LISTING_RHS_WIDTH: 877 listing_rhs_width = atoi (optarg); 878 break; 879 case OPTION_LISTING_CONT_LINES: 880 listing_lhs_cont_lines = atoi (optarg); 881 break; 882 883 case 'M': 884 flag_mri = 1; 885 #ifdef TC_M68K 886 flag_m68k_mri = 1; 887 #endif 888 break; 889 890 case 'R': 891 flag_readonly_data_in_text = 1; 892 break; 893 894 case 'W': 895 flag_no_warnings = 1; 896 break; 897 898 case OPTION_WARN: 899 flag_no_warnings = 0; 900 flag_fatal_warnings = 0; 901 break; 902 903 case OPTION_WARN_FATAL: 904 flag_no_warnings = 0; 905 flag_fatal_warnings = 1; 906 break; 907 908 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 909 case OPTION_EXECSTACK: 910 flag_execstack = 1; 911 flag_noexecstack = 0; 912 break; 913 914 case OPTION_NOEXECSTACK: 915 flag_noexecstack = 1; 916 flag_execstack = 0; 917 break; 918 919 case OPTION_SIZE_CHECK: 920 if (strcasecmp (optarg, "error") == 0) 921 flag_allow_nonconst_size = FALSE; 922 else if (strcasecmp (optarg, "warning") == 0) 923 flag_allow_nonconst_size = TRUE; 924 else 925 as_fatal (_("Invalid --size-check= option: `%s'"), optarg); 926 break; 927 928 case OPTION_ELF_STT_COMMON: 929 if (strcasecmp (optarg, "no") == 0) 930 flag_use_elf_stt_common = 0; 931 else if (strcasecmp (optarg, "yes") == 0) 932 flag_use_elf_stt_common = 1; 933 else 934 as_fatal (_("Invalid --elf-stt-common= option: `%s'"), 935 optarg); 936 break; 937 938 case OPTION_SECTNAME_SUBST: 939 flag_sectname_subst = 1; 940 break; 941 942 case OPTION_ELF_BUILD_NOTES: 943 if (strcasecmp (optarg, "no") == 0) 944 flag_generate_build_notes = FALSE; 945 else if (strcasecmp (optarg, "yes") == 0) 946 flag_generate_build_notes = TRUE; 947 else 948 as_fatal (_("Invalid --generate-missing-build-notes option: `%s'"), 949 optarg); 950 break; 951 952 #endif /* OBJ_ELF */ 953 954 case 'Z': 955 flag_always_generate_output = 1; 956 break; 957 958 case OPTION_AL: 959 listing |= LISTING_LISTING; 960 if (optarg) 961 listing_filename = xstrdup (optarg); 962 break; 963 964 case OPTION_ALTERNATE: 965 optarg = old_argv [optind - 1]; 966 while (* optarg == '-') 967 optarg ++; 968 969 if (strcmp (optarg, "alternate") == 0) 970 { 971 flag_macro_alternate = 1; 972 break; 973 } 974 optarg ++; 975 /* Fall through. */ 976 977 case 'a': 978 if (optarg) 979 { 980 if (optarg != old_argv[optind] && optarg[-1] == '=') 981 --optarg; 982 983 if (md_parse_option (optc, optarg) != 0) 984 break; 985 986 while (*optarg) 987 { 988 switch (*optarg) 989 { 990 case 'c': 991 listing |= LISTING_NOCOND; 992 break; 993 case 'd': 994 listing |= LISTING_NODEBUG; 995 break; 996 case 'g': 997 listing |= LISTING_GENERAL; 998 break; 999 case 'h': 1000 listing |= LISTING_HLL; 1001 break; 1002 case 'l': 1003 listing |= LISTING_LISTING; 1004 break; 1005 case 'm': 1006 listing |= LISTING_MACEXP; 1007 break; 1008 case 'n': 1009 listing |= LISTING_NOFORM; 1010 break; 1011 case 's': 1012 listing |= LISTING_SYMBOLS; 1013 break; 1014 case '=': 1015 listing_filename = xstrdup (optarg + 1); 1016 optarg += strlen (listing_filename); 1017 break; 1018 default: 1019 as_fatal (_("invalid listing option `%c'"), *optarg); 1020 break; 1021 } 1022 optarg++; 1023 } 1024 } 1025 if (!listing) 1026 listing = LISTING_DEFAULT; 1027 break; 1028 1029 case 'D': 1030 /* DEBUG is implemented: it debugs different 1031 things from other people's assemblers. */ 1032 flag_debug = 1; 1033 break; 1034 1035 case 'f': 1036 flag_no_comments = 1; 1037 break; 1038 1039 case 'I': 1040 { /* Include file directory. */ 1041 char *temp = xstrdup (optarg); 1042 1043 add_include_dir (temp); 1044 break; 1045 } 1046 1047 case 'o': 1048 out_file_name = xstrdup (optarg); 1049 break; 1050 1051 case 'w': 1052 break; 1053 1054 case 'X': 1055 /* -X means treat warnings as errors. */ 1056 break; 1057 1058 case OPTION_REDUCE_MEMORY_OVERHEADS: 1059 /* The only change we make at the moment is to reduce 1060 the size of the hash tables that we use. */ 1061 set_gas_hash_table_size (4051); 1062 break; 1063 1064 case OPTION_HASH_TABLE_SIZE: 1065 { 1066 unsigned long new_size; 1067 1068 new_size = strtoul (optarg, NULL, 0); 1069 if (new_size) 1070 set_gas_hash_table_size (new_size); 1071 else 1072 as_fatal (_("--hash-size needs a numeric argument")); 1073 break; 1074 } 1075 } 1076 } 1077 1078 free (shortopts); 1079 free (longopts); 1080 1081 *pargc = new_argc; 1082 *pargv = new_argv; 1083 1084 #ifdef md_after_parse_args 1085 md_after_parse_args (); 1086 #endif 1087 } 1088 1089 static void 1090 dump_statistics (void) 1091 { 1092 long run_time = get_run_time () - start_time; 1093 1094 fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), 1095 myname, run_time / 1000000, run_time % 1000000); 1096 1097 subsegs_print_statistics (stderr); 1098 write_print_statistics (stderr); 1099 symbol_print_statistics (stderr); 1100 read_print_statistics (stderr); 1101 1102 #ifdef tc_print_statistics 1103 tc_print_statistics (stderr); 1104 #endif 1105 1106 #ifdef obj_print_statistics 1107 obj_print_statistics (stderr); 1108 #endif 1109 } 1110 1111 static void 1112 close_output_file (void) 1113 { 1114 output_file_close (out_file_name); 1115 if (!keep_it) 1116 unlink_if_ordinary (out_file_name); 1117 } 1118 1119 /* The interface between the macro code and gas expression handling. */ 1120 1121 static size_t 1122 macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val) 1123 { 1124 expressionS ex; 1125 1126 sb_terminate (in); 1127 1128 temp_ilp (in->ptr + idx); 1129 expression_and_evaluate (&ex); 1130 idx = input_line_pointer - in->ptr; 1131 restore_ilp (); 1132 1133 if (ex.X_op != O_constant) 1134 as_bad ("%s", emsg); 1135 1136 *val = ex.X_add_number; 1137 1138 return idx; 1139 } 1140 1141 /* Here to attempt 1 pass over each input file. 1142 We scan argv[*] looking for filenames or exactly "" which is 1143 shorthand for stdin. Any argv that is NULL is not a file-name. 1144 We set need_pass_2 TRUE if, after this, we still have unresolved 1145 expressions of the form (unknown value)+-(unknown value). 1146 1147 Note the un*x semantics: there is only 1 logical input file, but it 1148 may be a catenation of many 'physical' input files. */ 1149 1150 static void 1151 perform_an_assembly_pass (int argc, char ** argv) 1152 { 1153 int saw_a_file = 0; 1154 #ifndef OBJ_MACH_O 1155 flagword applicable; 1156 #endif 1157 1158 need_pass_2 = 0; 1159 1160 #ifndef OBJ_MACH_O 1161 /* Create the standard sections, and those the assembler uses 1162 internally. */ 1163 text_section = subseg_new (TEXT_SECTION_NAME, 0); 1164 data_section = subseg_new (DATA_SECTION_NAME, 0); 1165 bss_section = subseg_new (BSS_SECTION_NAME, 0); 1166 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed 1167 to have relocs, otherwise we don't find out in time. */ 1168 applicable = bfd_applicable_section_flags (stdoutput); 1169 bfd_set_section_flags (text_section, 1170 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC 1171 | SEC_CODE | SEC_READONLY)); 1172 bfd_set_section_flags (data_section, 1173 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC 1174 | SEC_DATA)); 1175 bfd_set_section_flags (bss_section, applicable & SEC_ALLOC); 1176 seg_info (bss_section)->bss = 1; 1177 #endif 1178 subseg_new (BFD_ABS_SECTION_NAME, 0); 1179 subseg_new (BFD_UND_SECTION_NAME, 0); 1180 reg_section = subseg_new ("*GAS `reg' section*", 0); 1181 expr_section = subseg_new ("*GAS `expr' section*", 0); 1182 1183 #ifndef OBJ_MACH_O 1184 subseg_set (text_section, 0); 1185 #endif 1186 1187 /* This may add symbol table entries, which requires having an open BFD, 1188 and sections already created. */ 1189 md_begin (); 1190 1191 #ifdef USING_CGEN 1192 gas_cgen_begin (); 1193 #endif 1194 #ifdef obj_begin 1195 obj_begin (); 1196 #endif 1197 1198 /* Skip argv[0]. */ 1199 argv++; 1200 argc--; 1201 1202 while (argc--) 1203 { 1204 if (*argv) 1205 { /* Is it a file-name argument? */ 1206 PROGRESS (1); 1207 saw_a_file++; 1208 /* argv->"" if stdin desired, else->filename. */ 1209 read_a_source_file (*argv); 1210 } 1211 argv++; /* Completed that argv. */ 1212 } 1213 if (!saw_a_file) 1214 read_a_source_file (""); 1215 } 1216 1217 1218 int 1219 main (int argc, char ** argv) 1220 { 1221 char ** argv_orig = argv; 1222 struct stat sob; 1223 1224 int macro_strip_at; 1225 1226 start_time = get_run_time (); 1227 signal_init (); 1228 1229 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) 1230 setlocale (LC_MESSAGES, ""); 1231 #endif 1232 #if defined (HAVE_SETLOCALE) 1233 setlocale (LC_CTYPE, ""); 1234 #endif 1235 bindtextdomain (PACKAGE, LOCALEDIR); 1236 textdomain (PACKAGE); 1237 1238 if (debug_memory) 1239 chunksize = 64; 1240 1241 #ifdef HOST_SPECIAL_INIT 1242 HOST_SPECIAL_INIT (argc, argv); 1243 #endif 1244 1245 myname = argv[0]; 1246 xmalloc_set_program_name (myname); 1247 1248 expandargv (&argc, &argv); 1249 1250 START_PROGRESS (myname, 0); 1251 1252 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME 1253 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" 1254 #endif 1255 1256 out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; 1257 1258 hex_init (); 1259 if (bfd_init () != BFD_INIT_MAGIC) 1260 as_fatal (_("libbfd ABI mismatch")); 1261 bfd_set_error_program_name (myname); 1262 1263 #ifdef USE_EMULATIONS 1264 select_emulation_mode (argc, argv); 1265 #endif 1266 1267 PROGRESS (1); 1268 /* Call parse_args before any of the init/begin functions 1269 so that switches like --hash-size can be honored. */ 1270 parse_args (&argc, &argv); 1271 1272 if (argc > 1 && stat (out_file_name, &sob) == 0) 1273 { 1274 int i; 1275 1276 for (i = 1; i < argc; ++i) 1277 { 1278 struct stat sib; 1279 1280 /* Check that the input file and output file are different. */ 1281 if (stat (argv[i], &sib) == 0 1282 && sib.st_ino == sob.st_ino 1283 /* POSIX emulating systems may support stat() but if the 1284 underlying file system does not support a file serial number 1285 of some kind then they will return 0 for the inode. So 1286 two files with an inode of 0 may not actually be the same. 1287 On real POSIX systems no ordinary file will ever have an 1288 inode of 0. */ 1289 && sib.st_ino != 0 1290 /* Different files may have the same inode number if they 1291 reside on different devices, so check the st_dev field as 1292 well. */ 1293 && sib.st_dev == sob.st_dev) 1294 { 1295 const char *saved_out_file_name = out_file_name; 1296 1297 /* Don't let as_fatal remove the output file! */ 1298 out_file_name = NULL; 1299 as_fatal (_("The input '%s' and output '%s' files are the same"), 1300 argv[i], saved_out_file_name); 1301 } 1302 } 1303 } 1304 1305 symbol_begin (); 1306 frag_init (); 1307 subsegs_begin (); 1308 read_begin (); 1309 input_scrub_begin (); 1310 expr_begin (); 1311 1312 /* It has to be called after dump_statistics (). */ 1313 xatexit (close_output_file); 1314 1315 if (flag_print_statistics) 1316 xatexit (dump_statistics); 1317 1318 macro_strip_at = 0; 1319 #ifdef TC_I960 1320 macro_strip_at = flag_mri; 1321 #endif 1322 1323 macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr); 1324 1325 PROGRESS (1); 1326 1327 output_file_create (out_file_name); 1328 gas_assert (stdoutput != 0); 1329 1330 dot_symbol_init (); 1331 1332 #ifdef tc_init_after_args 1333 tc_init_after_args (); 1334 #endif 1335 1336 itbl_init (); 1337 1338 dwarf2_init (); 1339 1340 local_symbol_make (".gasversion.", absolute_section, 1341 BFD_VERSION / 10000UL, &predefined_address_frag); 1342 1343 /* Now that we have fully initialized, and have created the output 1344 file, define any symbols requested by --defsym command line 1345 arguments. */ 1346 while (defsyms != NULL) 1347 { 1348 symbolS *sym; 1349 struct defsym_list *next; 1350 1351 sym = symbol_new (defsyms->name, absolute_section, defsyms->value, 1352 &zero_address_frag); 1353 /* Make symbols defined on the command line volatile, so that they 1354 can be redefined inside a source file. This makes this assembler's 1355 behaviour compatible with earlier versions, but it may not be 1356 completely intuitive. */ 1357 S_SET_VOLATILE (sym); 1358 symbol_table_insert (sym); 1359 next = defsyms->next; 1360 free (defsyms); 1361 defsyms = next; 1362 } 1363 1364 PROGRESS (1); 1365 1366 /* Assemble it. */ 1367 perform_an_assembly_pass (argc, argv); 1368 1369 cond_finish_check (-1); 1370 1371 #ifdef md_end 1372 md_end (); 1373 #endif 1374 1375 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF 1376 if ((flag_execstack || flag_noexecstack) 1377 && OUTPUT_FLAVOR == bfd_target_elf_flavour) 1378 { 1379 segT gnustack; 1380 1381 gnustack = subseg_new (".note.GNU-stack", 0); 1382 bfd_set_section_flags (gnustack, 1383 SEC_READONLY | (flag_execstack ? SEC_CODE : 0)); 1384 1385 } 1386 #endif 1387 1388 /* If we've been collecting dwarf2 .debug_line info, either for 1389 assembly debugging or on behalf of the compiler, emit it now. */ 1390 dwarf2_finish (); 1391 1392 /* If we constructed dwarf2 .eh_frame info, either via .cfi 1393 directives from the user or by the backend, emit it now. */ 1394 cfi_finish (); 1395 1396 keep_it = 0; 1397 if (seen_at_least_1_file ()) 1398 { 1399 int n_warns, n_errs; 1400 char warn_msg[50]; 1401 char err_msg[50]; 1402 1403 write_object_file (); 1404 1405 n_warns = had_warnings (); 1406 n_errs = had_errors (); 1407 1408 sprintf (warn_msg, 1409 ngettext ("%d warning", "%d warnings", n_warns), n_warns); 1410 sprintf (err_msg, 1411 ngettext ("%d error", "%d errors", n_errs), n_errs); 1412 if (flag_fatal_warnings && n_warns != 0) 1413 { 1414 if (n_errs == 0) 1415 as_bad (_("%s, treating warnings as errors"), warn_msg); 1416 n_errs += n_warns; 1417 } 1418 1419 if (n_errs == 0) 1420 keep_it = 1; 1421 else if (flag_always_generate_output) 1422 { 1423 /* The -Z flag indicates that an object file should be generated, 1424 regardless of warnings and errors. */ 1425 keep_it = 1; 1426 fprintf (stderr, _("%s, %s, generating bad object file\n"), 1427 err_msg, warn_msg); 1428 } 1429 } 1430 1431 fflush (stderr); 1432 1433 #ifndef NO_LISTING 1434 listing_print (listing_filename, argv_orig); 1435 #endif 1436 1437 input_scrub_end (); 1438 1439 END_PROGRESS (myname); 1440 1441 /* Use xexit instead of return, because under VMS environments they 1442 may not place the same interpretation on the value given. */ 1443 if (had_errors () != 0) 1444 xexit (EXIT_FAILURE); 1445 1446 /* Only generate dependency file if assembler was successful. */ 1447 print_dependencies (); 1448 1449 xexit (EXIT_SUCCESS); 1450 } 1451