| 1 | /* nlmconv.c -- NLM conversion program |
| 2 | Copyright (C) 1993 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Binutils. |
| 5 | |
| 6 | This program 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 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* Written by Ian Lance Taylor <ian@cygnus.com>. |
| 21 | |
| 22 | This program can be used to convert any appropriate object file |
| 23 | into a NetWare Loadable Module (an NLM). It will accept a linker |
| 24 | specification file which is identical to that accepted by the |
| 25 | NetWare linker, NLMLINK, except that the INPUT command, normally |
| 26 | used to give a list of object files to link together, is not used. |
| 27 | This program will convert only a single object file. */ |
| 28 | |
| 29 | #include <ansidecl.h> |
| 30 | #include <stdio.h> |
| 31 | #include <time.h> |
| 32 | #include <ctype.h> |
| 33 | #include <sys/types.h> |
| 34 | #include <sys/stat.h> |
| 35 | #include <sys/file.h> |
| 36 | #include <assert.h> |
| 37 | #include <getopt.h> |
| 38 | #include "bfd.h" |
| 39 | #include "libiberty.h" |
| 40 | #include "sysdep.h" |
| 41 | #include "bucomm.h" |
| 42 | /* Internal BFD NLM header. */ |
| 43 | #include "libnlm.h" |
| 44 | #include "nlmconv.h" |
| 45 | |
| 46 | #ifdef NLMCONV_ALPHA |
| 47 | #include "coff/sym.h" |
| 48 | #include "coff/ecoff.h" |
| 49 | #endif |
| 50 | |
| 51 | /* If strerror is just a macro, we want to use the one from libiberty |
| 52 | since it will handle undefined values. */ |
| 53 | #undef strerror |
| 54 | extern char *strerror (); |
| 55 | |
| 56 | #ifndef localtime |
| 57 | extern struct tm *localtime (); |
| 58 | #endif |
| 59 | |
| 60 | #ifndef getenv |
| 61 | extern char *getenv (); |
| 62 | #endif |
| 63 | |
| 64 | #ifndef SEEK_SET |
| 65 | #define SEEK_SET 0 |
| 66 | #endif |
| 67 | |
| 68 | #ifndef R_OK |
| 69 | #define R_OK 4 |
| 70 | #define W_OK 2 |
| 71 | #define X_OK 1 |
| 72 | #endif |
| 73 | \f |
| 74 | /* Global variables. */ |
| 75 | |
| 76 | /* The name used to invoke the program. */ |
| 77 | char *program_name; |
| 78 | |
| 79 | /* The version number. */ |
| 80 | extern char *program_version; |
| 81 | |
| 82 | /* Local variables. */ |
| 83 | |
| 84 | /* Whether to print out debugging information (currently just controls |
| 85 | whether it prints the linker command if there is one). */ |
| 86 | static int debug; |
| 87 | |
| 88 | /* The symbol table. */ |
| 89 | static asymbol **symbols; |
| 90 | |
| 91 | /* A section we create in the output file to hold pointers to where |
| 92 | the sections of the input file end up. We will put a pointer to |
| 93 | this section in the NLM header. These is an entry for each input |
| 94 | section. The format is |
| 95 | null terminated section name |
| 96 | zeroes to adjust to 4 byte boundary |
| 97 | 4 byte section data file pointer |
| 98 | 4 byte section size |
| 99 | We don't need a version number. The way we find this information |
| 100 | is by finding a stamp in the NLM header information. If we need to |
| 101 | change the format of this information, we can simply change the |
| 102 | stamp. */ |
| 103 | static asection *secsec; |
| 104 | |
| 105 | /* A temporary file name to be unlinked on exit. Actually, for most |
| 106 | errors, we leave it around. It's not clear whether that is helpful |
| 107 | or not. */ |
| 108 | static char *unlink_on_exit; |
| 109 | |
| 110 | /* The list of long options. */ |
| 111 | static struct option long_options[] = |
| 112 | { |
| 113 | { "debug", no_argument, 0, 'd' }, |
| 114 | { "header-file", required_argument, 0, 'T' }, |
| 115 | { "help", no_argument, 0, 'h' }, |
| 116 | { "input-target", required_argument, 0, 'I' }, |
| 117 | { "input-format", required_argument, 0, 'I' }, /* Obsolete */ |
| 118 | { "linker", required_argument, 0, 'l' }, |
| 119 | { "output-target", required_argument, 0, 'O' }, |
| 120 | { "output-format", required_argument, 0, 'O' }, /* Obsolete */ |
| 121 | { "version", no_argument, 0, 'V' }, |
| 122 | { NULL, no_argument, 0, 0 } |
| 123 | }; |
| 124 | |
| 125 | /* Local routines. */ |
| 126 | |
| 127 | static void show_help PARAMS ((void)); |
| 128 | static void show_usage PARAMS ((FILE *, int)); |
| 129 | static const char *select_output_format PARAMS ((enum bfd_architecture, |
| 130 | unsigned long, boolean)); |
| 131 | static void setup_sections PARAMS ((bfd *, asection *, PTR)); |
| 132 | static void copy_sections PARAMS ((bfd *, asection *, PTR)); |
| 133 | static void mangle_relocs PARAMS ((bfd *, asection *, arelent ***, |
| 134 | long *, char *, |
| 135 | bfd_size_type)); |
| 136 | static void default_mangle_relocs PARAMS ((bfd *, asection *, arelent ***, |
| 137 | long *, char *, |
| 138 | bfd_size_type)); |
| 139 | static char *link_inputs PARAMS ((struct string_list *, char *)); |
| 140 | static const char *choose_temp_base_try PARAMS ((const char *, |
| 141 | const char *)); |
| 142 | static void choose_temp_base PARAMS ((void)); |
| 143 | static int pexecute PARAMS ((char *, char *[])); |
| 144 | |
| 145 | #ifdef NLMCONV_I386 |
| 146 | static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent ***, |
| 147 | long *, char *, |
| 148 | bfd_size_type)); |
| 149 | #endif |
| 150 | |
| 151 | #ifdef NLMCONV_ALPHA |
| 152 | static void alpha_mangle_relocs PARAMS ((bfd *, asection *, arelent ***, |
| 153 | long *, char *, |
| 154 | bfd_size_type)); |
| 155 | #endif |
| 156 | |
| 157 | #ifdef NLMCONV_POWERPC |
| 158 | static void powerpc_build_stubs PARAMS ((bfd *, bfd *, asymbol ***, long *)); |
| 159 | static void powerpc_resolve_stubs PARAMS ((bfd *, bfd *)); |
| 160 | static void powerpc_mangle_relocs PARAMS ((bfd *, asection *, arelent ***, |
| 161 | long *, char *, |
| 162 | bfd_size_type)); |
| 163 | #endif |
| 164 | \f |
| 165 | /* The main routine. */ |
| 166 | |
| 167 | int |
| 168 | main (argc, argv) |
| 169 | int argc; |
| 170 | char **argv; |
| 171 | { |
| 172 | int opt; |
| 173 | char *input_file = NULL; |
| 174 | const char *input_format = NULL; |
| 175 | const char *output_format = NULL; |
| 176 | const char *header_file = NULL; |
| 177 | char *ld_arg = NULL; |
| 178 | Nlm_Internal_Fixed_Header fixed_hdr_struct; |
| 179 | Nlm_Internal_Variable_Header var_hdr_struct; |
| 180 | Nlm_Internal_Version_Header version_hdr_struct; |
| 181 | Nlm_Internal_Copyright_Header copyright_hdr_struct; |
| 182 | Nlm_Internal_Extended_Header extended_hdr_struct; |
| 183 | bfd *inbfd; |
| 184 | bfd *outbfd; |
| 185 | asymbol **newsyms, **outsyms; |
| 186 | long symcount, newsymalloc, newsymcount; |
| 187 | long symsize; |
| 188 | asection *text_sec, *bss_sec, *data_sec; |
| 189 | bfd_vma vma; |
| 190 | bfd_size_type align; |
| 191 | asymbol *endsym; |
| 192 | long i; |
| 193 | char inlead, outlead; |
| 194 | boolean gotstart, gotexit, gotcheck; |
| 195 | struct stat st; |
| 196 | FILE *custom_data, *help_data, *message_data, *rpc_data, *shared_data; |
| 197 | size_t custom_size, help_size, message_size, module_size, rpc_size; |
| 198 | asection *custom_section, *help_section, *message_section, *module_section; |
| 199 | asection *rpc_section, *shared_section; |
| 200 | bfd *sharedbfd; |
| 201 | size_t shared_offset, shared_size; |
| 202 | Nlm_Internal_Fixed_Header sharedhdr; |
| 203 | int len; |
| 204 | char *modname; |
| 205 | char **matching; |
| 206 | |
| 207 | program_name = argv[0]; |
| 208 | xmalloc_set_program_name (program_name); |
| 209 | |
| 210 | bfd_init (); |
| 211 | |
| 212 | while ((opt = getopt_long (argc, argv, "dhI:l:O:T:V", long_options, |
| 213 | (int *) NULL)) |
| 214 | != EOF) |
| 215 | { |
| 216 | switch (opt) |
| 217 | { |
| 218 | case 'd': |
| 219 | debug = 1; |
| 220 | break; |
| 221 | case 'h': |
| 222 | show_help (); |
| 223 | /*NOTREACHED*/ |
| 224 | case 'I': |
| 225 | input_format = optarg; |
| 226 | break; |
| 227 | case 'l': |
| 228 | ld_arg = optarg; |
| 229 | break; |
| 230 | case 'O': |
| 231 | output_format = optarg; |
| 232 | break; |
| 233 | case 'T': |
| 234 | header_file = optarg; |
| 235 | break; |
| 236 | case 'V': |
| 237 | printf ("GNU %s version %s\n", program_name, program_version); |
| 238 | exit (0); |
| 239 | /*NOTREACHED*/ |
| 240 | case 0: |
| 241 | break; |
| 242 | default: |
| 243 | show_usage (stderr, 1); |
| 244 | /*NOTREACHED*/ |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /* The input and output files may be named on the command line. */ |
| 249 | output_file = NULL; |
| 250 | if (optind < argc) |
| 251 | { |
| 252 | input_file = argv[optind]; |
| 253 | ++optind; |
| 254 | if (optind < argc) |
| 255 | { |
| 256 | output_file = argv[optind]; |
| 257 | ++optind; |
| 258 | if (optind < argc) |
| 259 | show_usage (stderr, 1); |
| 260 | if (strcmp (input_file, output_file) == 0) |
| 261 | { |
| 262 | fprintf (stderr, |
| 263 | "%s: input and output files must be different\n", |
| 264 | program_name); |
| 265 | exit (1); |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | /* Initialize the header information to default values. */ |
| 271 | fixed_hdr = &fixed_hdr_struct; |
| 272 | memset ((PTR) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct); |
| 273 | var_hdr = &var_hdr_struct; |
| 274 | memset ((PTR) &var_hdr_struct, 0, sizeof var_hdr_struct); |
| 275 | version_hdr = &version_hdr_struct; |
| 276 | memset ((PTR) &version_hdr_struct, 0, sizeof version_hdr_struct); |
| 277 | copyright_hdr = ©right_hdr_struct; |
| 278 | memset ((PTR) ©right_hdr_struct, 0, sizeof copyright_hdr_struct); |
| 279 | extended_hdr = &extended_hdr_struct; |
| 280 | memset ((PTR) &extended_hdr_struct, 0, sizeof extended_hdr_struct); |
| 281 | check_procedure = NULL; |
| 282 | custom_file = NULL; |
| 283 | debug_info = false; |
| 284 | exit_procedure = "_Stop"; |
| 285 | export_symbols = NULL; |
| 286 | map_file = NULL; |
| 287 | full_map = false; |
| 288 | help_file = NULL; |
| 289 | import_symbols = NULL; |
| 290 | message_file = NULL; |
| 291 | modules = NULL; |
| 292 | sharelib_file = NULL; |
| 293 | start_procedure = "_Prelude"; |
| 294 | verbose = false; |
| 295 | rpc_file = NULL; |
| 296 | |
| 297 | parse_errors = 0; |
| 298 | |
| 299 | /* Parse the header file (if there is one). */ |
| 300 | if (header_file != NULL) |
| 301 | { |
| 302 | if (! nlmlex_file (header_file) |
| 303 | || yyparse () != 0 |
| 304 | || parse_errors != 0) |
| 305 | exit (1); |
| 306 | } |
| 307 | |
| 308 | if (input_files != NULL) |
| 309 | { |
| 310 | if (input_file != NULL) |
| 311 | { |
| 312 | fprintf (stderr, |
| 313 | "%s: input file named both on command line and with INPUT\n", |
| 314 | program_name); |
| 315 | exit (1); |
| 316 | } |
| 317 | if (input_files->next == NULL) |
| 318 | input_file = input_files->string; |
| 319 | else |
| 320 | input_file = link_inputs (input_files, ld_arg); |
| 321 | } |
| 322 | else if (input_file == NULL) |
| 323 | { |
| 324 | fprintf (stderr, "%s: no input file\n", program_name); |
| 325 | show_usage (stderr, 1); |
| 326 | } |
| 327 | |
| 328 | inbfd = bfd_openr (input_file, input_format); |
| 329 | if (inbfd == NULL) |
| 330 | bfd_fatal (input_file); |
| 331 | |
| 332 | if (! bfd_check_format_matches (inbfd, bfd_object, &matching)) |
| 333 | { |
| 334 | bfd_nonfatal (input_file); |
| 335 | if (bfd_get_error () == bfd_error_file_ambiguously_recognized) |
| 336 | { |
| 337 | list_matching_formats (matching); |
| 338 | free (matching); |
| 339 | } |
| 340 | exit (1); |
| 341 | } |
| 342 | |
| 343 | if (output_format == NULL) |
| 344 | output_format = select_output_format (bfd_get_arch (inbfd), |
| 345 | bfd_get_mach (inbfd), |
| 346 | inbfd->xvec->byteorder_big_p); |
| 347 | |
| 348 | assert (output_format != NULL); |
| 349 | |
| 350 | /* Use the output file named on the command line if it exists. |
| 351 | Otherwise use the file named in the OUTPUT statement. */ |
| 352 | if (output_file == NULL) |
| 353 | { |
| 354 | fprintf (stderr, "%s: no name for output file\n", |
| 355 | program_name); |
| 356 | show_usage (stderr, 1); |
| 357 | } |
| 358 | |
| 359 | outbfd = bfd_openw (output_file, output_format); |
| 360 | if (outbfd == NULL) |
| 361 | bfd_fatal (output_file); |
| 362 | if (! bfd_set_format (outbfd, bfd_object)) |
| 363 | bfd_fatal (output_file); |
| 364 | |
| 365 | assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour); |
| 366 | |
| 367 | if (bfd_arch_get_compatible (inbfd, outbfd) == NULL) |
| 368 | fprintf (stderr, |
| 369 | "%s: warning:input and output formats are not compatible\n", |
| 370 | program_name); |
| 371 | |
| 372 | /* Move the values read from the command file into outbfd. */ |
| 373 | *nlm_fixed_header (outbfd) = fixed_hdr_struct; |
| 374 | *nlm_variable_header (outbfd) = var_hdr_struct; |
| 375 | *nlm_version_header (outbfd) = version_hdr_struct; |
| 376 | *nlm_copyright_header (outbfd) = copyright_hdr_struct; |
| 377 | *nlm_extended_header (outbfd) = extended_hdr_struct; |
| 378 | |
| 379 | /* Start copying the input BFD to the output BFD. */ |
| 380 | if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd))) |
| 381 | bfd_fatal (bfd_get_filename (outbfd)); |
| 382 | |
| 383 | symsize = bfd_get_symtab_upper_bound (inbfd); |
| 384 | if (symsize < 0) |
| 385 | bfd_fatal (input_file); |
| 386 | symbols = (asymbol **) xmalloc (symsize); |
| 387 | symcount = bfd_canonicalize_symtab (inbfd, symbols); |
| 388 | if (symcount < 0) |
| 389 | bfd_fatal (input_file); |
| 390 | |
| 391 | /* Make sure we have a .bss section. */ |
| 392 | bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME); |
| 393 | if (bss_sec == NULL) |
| 394 | { |
| 395 | bss_sec = bfd_make_section (outbfd, NLM_UNINITIALIZED_DATA_NAME); |
| 396 | if (bss_sec == NULL |
| 397 | || ! bfd_set_section_flags (outbfd, bss_sec, SEC_ALLOC) |
| 398 | || ! bfd_set_section_alignment (outbfd, bss_sec, 1)) |
| 399 | bfd_fatal ("make .bss section"); |
| 400 | } |
| 401 | |
| 402 | /* We store the original section names in the .nlmsections section, |
| 403 | so that programs which understand it can resurrect the original |
| 404 | sections from the NLM. We will put a pointer to .nlmsections in |
| 405 | the NLM header area. */ |
| 406 | secsec = bfd_make_section (outbfd, ".nlmsections"); |
| 407 | if (secsec == NULL) |
| 408 | bfd_fatal ("make .nlmsections section"); |
| 409 | if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS)) |
| 410 | bfd_fatal ("set .nlmsections flags"); |
| 411 | |
| 412 | #ifdef NLMCONV_POWERPC |
| 413 | /* For PowerPC NetWare we need to build stubs for calls to undefined |
| 414 | symbols. Because each stub requires an entry in the TOC section |
| 415 | which must be at the same location as other entries in the TOC |
| 416 | section, we must do this before determining where the TOC section |
| 417 | goes in setup_sections. */ |
| 418 | if (bfd_get_arch (inbfd) == bfd_arch_powerpc) |
| 419 | powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount); |
| 420 | #endif |
| 421 | |
| 422 | /* Set up the sections. */ |
| 423 | bfd_map_over_sections (inbfd, setup_sections, (PTR) outbfd); |
| 424 | |
| 425 | text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME); |
| 426 | |
| 427 | /* The .bss section immediately follows the .data section. */ |
| 428 | data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME); |
| 429 | if (data_sec != NULL) |
| 430 | { |
| 431 | bfd_size_type add; |
| 432 | |
| 433 | vma = bfd_get_section_size_before_reloc (data_sec); |
| 434 | align = 1 << bss_sec->alignment_power; |
| 435 | add = ((vma + align - 1) &~ (align - 1)) - vma; |
| 436 | vma += add; |
| 437 | if (! bfd_set_section_vma (outbfd, bss_sec, vma)) |
| 438 | bfd_fatal ("set .bss vma"); |
| 439 | if (add != 0) |
| 440 | { |
| 441 | bfd_size_type data_size; |
| 442 | |
| 443 | data_size = bfd_get_section_size_before_reloc (data_sec); |
| 444 | if (! bfd_set_section_size (outbfd, data_sec, data_size + add)) |
| 445 | bfd_fatal ("set .data size"); |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | /* Adjust symbol information. */ |
| 450 | inlead = bfd_get_symbol_leading_char (inbfd); |
| 451 | outlead = bfd_get_symbol_leading_char (outbfd); |
| 452 | gotstart = false; |
| 453 | gotexit = false; |
| 454 | gotcheck = false; |
| 455 | newsymalloc = 10; |
| 456 | newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *)); |
| 457 | newsymcount = 0; |
| 458 | endsym = NULL; |
| 459 | for (i = 0; i < symcount; i++) |
| 460 | { |
| 461 | register asymbol *sym; |
| 462 | |
| 463 | sym = symbols[i]; |
| 464 | |
| 465 | /* Add or remove a leading underscore. */ |
| 466 | if (inlead != outlead) |
| 467 | { |
| 468 | if (inlead != '\0') |
| 469 | { |
| 470 | if (bfd_asymbol_name (sym)[0] == inlead) |
| 471 | { |
| 472 | if (outlead == '\0') |
| 473 | ++sym->name; |
| 474 | else |
| 475 | { |
| 476 | char *new; |
| 477 | |
| 478 | new = xmalloc (strlen (bfd_asymbol_name (sym)) + 1); |
| 479 | new[0] = outlead; |
| 480 | strcpy (new + 1, bfd_asymbol_name (sym) + 1); |
| 481 | sym->name = new; |
| 482 | } |
| 483 | } |
| 484 | } |
| 485 | else |
| 486 | { |
| 487 | char *new; |
| 488 | |
| 489 | new = xmalloc (strlen (bfd_asymbol_name (sym)) + 2); |
| 490 | new[0] = outlead; |
| 491 | strcpy (new + 1, bfd_asymbol_name (sym)); |
| 492 | sym->name = new; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | /* NLM's have an uninitialized data section, but they do not |
| 497 | have a common section in the Unix sense. Move all common |
| 498 | symbols into the .bss section, and mark them as exported. */ |
| 499 | if (bfd_is_com_section (bfd_get_section (sym))) |
| 500 | { |
| 501 | bfd_vma size; |
| 502 | |
| 503 | sym->section = bss_sec; |
| 504 | size = sym->value; |
| 505 | sym->value = bss_sec->_raw_size; |
| 506 | bss_sec->_raw_size += size; |
| 507 | align = 1 << bss_sec->alignment_power; |
| 508 | bss_sec->_raw_size = (bss_sec->_raw_size + align - 1) &~ (align - 1); |
| 509 | sym->flags |= BSF_EXPORT | BSF_GLOBAL; |
| 510 | } |
| 511 | else if (bfd_get_section (sym)->output_section != NULL) |
| 512 | { |
| 513 | /* Move the symbol into the output section. */ |
| 514 | sym->value += bfd_get_section (sym)->output_offset; |
| 515 | sym->section = bfd_get_section (sym)->output_section; |
| 516 | /* This is no longer a section symbol. */ |
| 517 | sym->flags &=~ BSF_SECTION_SYM; |
| 518 | } |
| 519 | |
| 520 | /* Force _edata and _end to be defined. This would normally be |
| 521 | done by the linker, but the manipulation of the common |
| 522 | symbols will confuse it. */ |
| 523 | if ((sym->flags & BSF_DEBUGGING) == 0 |
| 524 | && bfd_asymbol_name (sym)[0] == '_' |
| 525 | && bfd_is_und_section (bfd_get_section (sym))) |
| 526 | { |
| 527 | if (strcmp (bfd_asymbol_name (sym), "_edata") == 0) |
| 528 | { |
| 529 | sym->section = bss_sec; |
| 530 | sym->value = 0; |
| 531 | } |
| 532 | if (strcmp (bfd_asymbol_name (sym), "_end") == 0) |
| 533 | { |
| 534 | sym->section = bss_sec; |
| 535 | endsym = sym; |
| 536 | } |
| 537 | |
| 538 | #ifdef NLMCONV_POWERPC |
| 539 | /* For PowerPC NetWare, we define __GOT0. This is the start |
| 540 | of the .got section. */ |
| 541 | if (bfd_get_arch (inbfd) == bfd_arch_powerpc |
| 542 | && strcmp (bfd_asymbol_name (sym), "__GOT0") == 0) |
| 543 | { |
| 544 | asection *got_sec; |
| 545 | |
| 546 | got_sec = bfd_get_section_by_name (inbfd, ".got"); |
| 547 | assert (got_sec != (asection *) NULL); |
| 548 | sym->value = got_sec->output_offset; |
| 549 | sym->section = got_sec->output_section; |
| 550 | } |
| 551 | #endif |
| 552 | } |
| 553 | |
| 554 | /* If this is a global symbol, check the export list. */ |
| 555 | if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0) |
| 556 | { |
| 557 | register struct string_list *l; |
| 558 | int found_simple; |
| 559 | |
| 560 | /* Unfortunately, a symbol can appear multiple times on the |
| 561 | export list, with and without prefixes. */ |
| 562 | found_simple = 0; |
| 563 | for (l = export_symbols; l != NULL; l = l->next) |
| 564 | { |
| 565 | if (strcmp (l->string, bfd_asymbol_name (sym)) == 0) |
| 566 | found_simple = 1; |
| 567 | else |
| 568 | { |
| 569 | char *zbase; |
| 570 | |
| 571 | zbase = strchr (l->string, '@'); |
| 572 | if (zbase != NULL |
| 573 | && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0) |
| 574 | { |
| 575 | /* We must add a symbol with this prefix. */ |
| 576 | if (newsymcount >= newsymalloc) |
| 577 | { |
| 578 | newsymalloc += 10; |
| 579 | newsyms = ((asymbol **) |
| 580 | xrealloc ((PTR) newsyms, |
| 581 | (newsymalloc |
| 582 | * sizeof (asymbol *)))); |
| 583 | } |
| 584 | newsyms[newsymcount] = |
| 585 | (asymbol *) xmalloc (sizeof (asymbol)); |
| 586 | *newsyms[newsymcount] = *sym; |
| 587 | newsyms[newsymcount]->name = l->string; |
| 588 | ++newsymcount; |
| 589 | } |
| 590 | } |
| 591 | } |
| 592 | if (! found_simple) |
| 593 | { |
| 594 | /* The unmodified symbol is actually not exported at |
| 595 | all. */ |
| 596 | sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT); |
| 597 | sym->flags |= BSF_LOCAL; |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | /* If it's an undefined symbol, see if it's on the import list. |
| 602 | Change the prefix if necessary. */ |
| 603 | if (bfd_is_und_section (bfd_get_section (sym))) |
| 604 | { |
| 605 | register struct string_list *l; |
| 606 | |
| 607 | for (l = import_symbols; l != NULL; l = l->next) |
| 608 | { |
| 609 | if (strcmp (l->string, bfd_asymbol_name (sym)) == 0) |
| 610 | break; |
| 611 | else |
| 612 | { |
| 613 | char *zbase; |
| 614 | |
| 615 | zbase = strchr (l->string, '@'); |
| 616 | if (zbase != NULL |
| 617 | && strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0) |
| 618 | { |
| 619 | sym->name = l->string; |
| 620 | break; |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | if (l == NULL) |
| 625 | fprintf (stderr, |
| 626 | "%s: warning: symbol %s imported but not in import list\n", |
| 627 | program_name, bfd_asymbol_name (sym)); |
| 628 | } |
| 629 | |
| 630 | /* See if it's one of the special named symbols. */ |
| 631 | if ((sym->flags & BSF_DEBUGGING) == 0) |
| 632 | { |
| 633 | bfd_vma val; |
| 634 | |
| 635 | /* FIXME: If these symbols are not in the .text section, we |
| 636 | add the .text section size to the value. This may not be |
| 637 | correct for all targets. I'm not sure how this should |
| 638 | really be handled. */ |
| 639 | if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0) |
| 640 | { |
| 641 | val = bfd_asymbol_value (sym); |
| 642 | if (bfd_get_section (sym) == data_sec |
| 643 | && text_sec != (asection *) NULL) |
| 644 | val += bfd_section_size (outbfd, text_sec); |
| 645 | if (! bfd_set_start_address (outbfd, val)) |
| 646 | bfd_fatal ("set start address"); |
| 647 | gotstart = true; |
| 648 | } |
| 649 | if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0) |
| 650 | { |
| 651 | val = bfd_asymbol_value (sym); |
| 652 | if (bfd_get_section (sym) == data_sec |
| 653 | && text_sec != (asection *) NULL) |
| 654 | val += bfd_section_size (outbfd, text_sec); |
| 655 | nlm_fixed_header (outbfd)->exitProcedureOffset = val; |
| 656 | gotexit = true; |
| 657 | } |
| 658 | if (check_procedure != NULL |
| 659 | && strcmp (bfd_asymbol_name (sym), check_procedure) == 0) |
| 660 | { |
| 661 | val = bfd_asymbol_value (sym); |
| 662 | if (bfd_get_section (sym) == data_sec |
| 663 | && text_sec != (asection *) NULL) |
| 664 | val += bfd_section_size (outbfd, text_sec); |
| 665 | nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val; |
| 666 | gotcheck = true; |
| 667 | } |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | if (endsym != NULL) |
| 672 | { |
| 673 | endsym->value = bfd_get_section_size_before_reloc (bss_sec); |
| 674 | |
| 675 | /* FIXME: If any relocs referring to _end use inplace addends, |
| 676 | then I think they need to be updated. This is handled by |
| 677 | i386_mangle_relocs. Is it needed for any other object |
| 678 | formats? */ |
| 679 | } |
| 680 | |
| 681 | if (newsymcount == 0) |
| 682 | outsyms = symbols; |
| 683 | else |
| 684 | { |
| 685 | outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1) |
| 686 | * sizeof (asymbol *)); |
| 687 | memcpy (outsyms, symbols, symcount * sizeof (asymbol *)); |
| 688 | memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *)); |
| 689 | outsyms[symcount + newsymcount] = NULL; |
| 690 | } |
| 691 | |
| 692 | bfd_set_symtab (outbfd, outsyms, symcount + newsymcount); |
| 693 | |
| 694 | if (! gotstart) |
| 695 | fprintf (stderr, "%s: warning: START procedure %s not defined\n", |
| 696 | program_name, start_procedure); |
| 697 | if (! gotexit) |
| 698 | fprintf (stderr, "%s: warning: EXIT procedure %s not defined\n", |
| 699 | program_name, exit_procedure); |
| 700 | if (check_procedure != NULL |
| 701 | && ! gotcheck) |
| 702 | fprintf (stderr, "%s: warning: CHECK procedure %s not defined\n", |
| 703 | program_name, check_procedure); |
| 704 | |
| 705 | /* Add additional sections required for the header information. */ |
| 706 | if (custom_file != NULL) |
| 707 | { |
| 708 | custom_data = fopen (custom_file, "r"); |
| 709 | if (custom_data == NULL |
| 710 | || fstat (fileno (custom_data), &st) < 0) |
| 711 | { |
| 712 | fprintf (stderr, "%s:%s: %s\n", program_name, custom_file, |
| 713 | strerror (errno)); |
| 714 | custom_file = NULL; |
| 715 | } |
| 716 | else |
| 717 | { |
| 718 | custom_size = st.st_size; |
| 719 | custom_section = bfd_make_section (outbfd, ".nlmcustom"); |
| 720 | if (custom_section == NULL |
| 721 | || ! bfd_set_section_size (outbfd, custom_section, custom_size) |
| 722 | || ! bfd_set_section_flags (outbfd, custom_section, |
| 723 | SEC_HAS_CONTENTS)) |
| 724 | bfd_fatal ("custom section"); |
| 725 | } |
| 726 | } |
| 727 | if (help_file != NULL) |
| 728 | { |
| 729 | help_data = fopen (help_file, "r"); |
| 730 | if (help_data == NULL |
| 731 | || fstat (fileno (help_data), &st) < 0) |
| 732 | { |
| 733 | fprintf (stderr, "%s:%s: %s\n", program_name, help_file, |
| 734 | strerror (errno)); |
| 735 | help_file = NULL; |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | help_size = st.st_size; |
| 740 | help_section = bfd_make_section (outbfd, ".nlmhelp"); |
| 741 | if (help_section == NULL |
| 742 | || ! bfd_set_section_size (outbfd, help_section, help_size) |
| 743 | || ! bfd_set_section_flags (outbfd, help_section, |
| 744 | SEC_HAS_CONTENTS)) |
| 745 | bfd_fatal ("help section"); |
| 746 | strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8); |
| 747 | } |
| 748 | } |
| 749 | if (message_file != NULL) |
| 750 | { |
| 751 | message_data = fopen (message_file, "r"); |
| 752 | if (message_data == NULL |
| 753 | || fstat (fileno (message_data), &st) < 0) |
| 754 | { |
| 755 | fprintf (stderr, "%s:%s: %s\n", program_name, message_file, |
| 756 | strerror (errno)); |
| 757 | message_file = NULL; |
| 758 | } |
| 759 | else |
| 760 | { |
| 761 | message_size = st.st_size; |
| 762 | message_section = bfd_make_section (outbfd, ".nlmmessages"); |
| 763 | if (message_section == NULL |
| 764 | || ! bfd_set_section_size (outbfd, message_section, message_size) |
| 765 | || ! bfd_set_section_flags (outbfd, message_section, |
| 766 | SEC_HAS_CONTENTS)) |
| 767 | bfd_fatal ("message section"); |
| 768 | strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8); |
| 769 | } |
| 770 | } |
| 771 | if (modules != NULL) |
| 772 | { |
| 773 | struct string_list *l; |
| 774 | |
| 775 | module_size = 0; |
| 776 | for (l = modules; l != NULL; l = l->next) |
| 777 | module_size += strlen (l->string) + 1; |
| 778 | module_section = bfd_make_section (outbfd, ".nlmmodules"); |
| 779 | if (module_section == NULL |
| 780 | || ! bfd_set_section_size (outbfd, module_section, module_size) |
| 781 | || ! bfd_set_section_flags (outbfd, module_section, |
| 782 | SEC_HAS_CONTENTS)) |
| 783 | bfd_fatal ("module section"); |
| 784 | } |
| 785 | if (rpc_file != NULL) |
| 786 | { |
| 787 | rpc_data = fopen (rpc_file, "r"); |
| 788 | if (rpc_data == NULL |
| 789 | || fstat (fileno (rpc_data), &st) < 0) |
| 790 | { |
| 791 | fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file, |
| 792 | strerror (errno)); |
| 793 | rpc_file = NULL; |
| 794 | } |
| 795 | else |
| 796 | { |
| 797 | rpc_size = st.st_size; |
| 798 | rpc_section = bfd_make_section (outbfd, ".nlmrpc"); |
| 799 | if (rpc_section == NULL |
| 800 | || ! bfd_set_section_size (outbfd, rpc_section, rpc_size) |
| 801 | || ! bfd_set_section_flags (outbfd, rpc_section, |
| 802 | SEC_HAS_CONTENTS)) |
| 803 | bfd_fatal ("rpc section"); |
| 804 | strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8); |
| 805 | } |
| 806 | } |
| 807 | if (sharelib_file != NULL) |
| 808 | { |
| 809 | sharedbfd = bfd_openr (sharelib_file, output_format); |
| 810 | if (sharedbfd == NULL |
| 811 | || ! bfd_check_format (sharedbfd, bfd_object)) |
| 812 | { |
| 813 | fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file, |
| 814 | bfd_errmsg (bfd_get_error ())); |
| 815 | sharelib_file = NULL; |
| 816 | } |
| 817 | else |
| 818 | { |
| 819 | sharedhdr = *nlm_fixed_header (sharedbfd); |
| 820 | bfd_close (sharedbfd); |
| 821 | shared_data = fopen (sharelib_file, "r"); |
| 822 | if (shared_data == NULL |
| 823 | || (fstat (fileno (shared_data), &st) < 0)) |
| 824 | { |
| 825 | fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file, |
| 826 | strerror (errno)); |
| 827 | sharelib_file = NULL; |
| 828 | } |
| 829 | else |
| 830 | { |
| 831 | /* If we were clever, we could just copy out the |
| 832 | sections of the shared library which we actually |
| 833 | need. However, we would have to figure out the sizes |
| 834 | of the external and public information, and that can |
| 835 | not be done without reading through them. */ |
| 836 | if (sharedhdr.uninitializedDataSize > 0) |
| 837 | { |
| 838 | /* There is no place to record this information. */ |
| 839 | fprintf (stderr, |
| 840 | "%s:%s: warning: shared libraries can not have uninitialized data\n", |
| 841 | program_name, sharelib_file); |
| 842 | } |
| 843 | shared_offset = st.st_size; |
| 844 | if (shared_offset > sharedhdr.codeImageOffset) |
| 845 | shared_offset = sharedhdr.codeImageOffset; |
| 846 | if (shared_offset > sharedhdr.dataImageOffset) |
| 847 | shared_offset = sharedhdr.dataImageOffset; |
| 848 | if (shared_offset > sharedhdr.relocationFixupOffset) |
| 849 | shared_offset = sharedhdr.relocationFixupOffset; |
| 850 | if (shared_offset > sharedhdr.externalReferencesOffset) |
| 851 | shared_offset = sharedhdr.externalReferencesOffset; |
| 852 | if (shared_offset > sharedhdr.publicsOffset) |
| 853 | shared_offset = sharedhdr.publicsOffset; |
| 854 | shared_size = st.st_size - shared_offset; |
| 855 | shared_section = bfd_make_section (outbfd, ".nlmshared"); |
| 856 | if (shared_section == NULL |
| 857 | || ! bfd_set_section_size (outbfd, shared_section, |
| 858 | shared_size) |
| 859 | || ! bfd_set_section_flags (outbfd, shared_section, |
| 860 | SEC_HAS_CONTENTS)) |
| 861 | bfd_fatal ("shared section"); |
| 862 | strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8); |
| 863 | } |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | /* Check whether a version was given. */ |
| 868 | if (strncmp (version_hdr->stamp, "VeRsIoN#", 8) != 0) |
| 869 | fprintf (stderr, "%s: warning: No version number given\n", |
| 870 | program_name); |
| 871 | |
| 872 | /* At least for now, always create an extended header, because that |
| 873 | is what NLMLINK does. */ |
| 874 | strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8); |
| 875 | |
| 876 | strncpy (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx", 8); |
| 877 | |
| 878 | /* If the date was not given, force it in. */ |
| 879 | if (nlm_version_header (outbfd)->month == 0 |
| 880 | && nlm_version_header (outbfd)->day == 0 |
| 881 | && nlm_version_header (outbfd)->year == 0) |
| 882 | { |
| 883 | time_t now; |
| 884 | struct tm *ptm; |
| 885 | |
| 886 | time (&now); |
| 887 | ptm = localtime (&now); |
| 888 | nlm_version_header (outbfd)->month = ptm->tm_mon + 1; |
| 889 | nlm_version_header (outbfd)->day = ptm->tm_mday; |
| 890 | nlm_version_header (outbfd)->year = ptm->tm_year + 1900; |
| 891 | strncpy (version_hdr->stamp, "VeRsIoN#", 8); |
| 892 | } |
| 893 | |
| 894 | #ifdef NLMCONV_POWERPC |
| 895 | /* Resolve the stubs we build for PowerPC NetWare. */ |
| 896 | if (bfd_get_arch (inbfd) == bfd_arch_powerpc) |
| 897 | powerpc_resolve_stubs (inbfd, outbfd); |
| 898 | #endif |
| 899 | |
| 900 | /* Copy over the sections. */ |
| 901 | bfd_map_over_sections (inbfd, copy_sections, (PTR) outbfd); |
| 902 | |
| 903 | /* Finish up the header information. */ |
| 904 | if (custom_file != NULL) |
| 905 | { |
| 906 | PTR data; |
| 907 | |
| 908 | data = xmalloc (custom_size); |
| 909 | if (fread (data, 1, custom_size, custom_data) != custom_size) |
| 910 | fprintf (stderr, "%s:%s: read: %s\n", program_name, custom_file, |
| 911 | strerror (errno)); |
| 912 | else |
| 913 | { |
| 914 | if (! bfd_set_section_contents (outbfd, custom_section, data, |
| 915 | (file_ptr) 0, custom_size)) |
| 916 | bfd_fatal ("custom section"); |
| 917 | nlm_fixed_header (outbfd)->customDataOffset = |
| 918 | custom_section->filepos; |
| 919 | nlm_fixed_header (outbfd)->customDataSize = custom_size; |
| 920 | } |
| 921 | free (data); |
| 922 | } |
| 923 | if (! debug_info) |
| 924 | { |
| 925 | /* As a special hack, the backend recognizes a debugInfoOffset |
| 926 | of -1 to mean that it should not output any debugging |
| 927 | information. This can not be handling by fiddling with the |
| 928 | symbol table because exported symbols appear in both the |
| 929 | export information and the debugging information. */ |
| 930 | nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1; |
| 931 | } |
| 932 | if (map_file != NULL) |
| 933 | fprintf (stderr, |
| 934 | "%s: warning: MAP and FULLMAP are not supported; try ld -M\n", |
| 935 | program_name); |
| 936 | if (help_file != NULL) |
| 937 | { |
| 938 | PTR data; |
| 939 | |
| 940 | data = xmalloc (help_size); |
| 941 | if (fread (data, 1, help_size, help_data) != help_size) |
| 942 | fprintf (stderr, "%s:%s: read: %s\n", program_name, help_file, |
| 943 | strerror (errno)); |
| 944 | else |
| 945 | { |
| 946 | if (! bfd_set_section_contents (outbfd, help_section, data, |
| 947 | (file_ptr) 0, help_size)) |
| 948 | bfd_fatal ("help section"); |
| 949 | nlm_extended_header (outbfd)->helpFileOffset = |
| 950 | help_section->filepos; |
| 951 | nlm_extended_header (outbfd)->helpFileLength = help_size; |
| 952 | } |
| 953 | free (data); |
| 954 | } |
| 955 | if (message_file != NULL) |
| 956 | { |
| 957 | PTR data; |
| 958 | |
| 959 | data = xmalloc (message_size); |
| 960 | if (fread (data, 1, message_size, message_data) != message_size) |
| 961 | fprintf (stderr, "%s:%s: read: %s\n", program_name, message_file, |
| 962 | strerror (errno)); |
| 963 | else |
| 964 | { |
| 965 | if (! bfd_set_section_contents (outbfd, message_section, data, |
| 966 | (file_ptr) 0, message_size)) |
| 967 | bfd_fatal ("message section"); |
| 968 | nlm_extended_header (outbfd)->messageFileOffset = |
| 969 | message_section->filepos; |
| 970 | nlm_extended_header (outbfd)->messageFileLength = message_size; |
| 971 | |
| 972 | /* FIXME: Are these offsets correct on all platforms? Are |
| 973 | they 32 bits on all platforms? What endianness? */ |
| 974 | nlm_extended_header (outbfd)->languageID = |
| 975 | bfd_h_get_32 (outbfd, (bfd_byte *) data + 106); |
| 976 | nlm_extended_header (outbfd)->messageCount = |
| 977 | bfd_h_get_32 (outbfd, (bfd_byte *) data + 110); |
| 978 | } |
| 979 | free (data); |
| 980 | } |
| 981 | if (modules != NULL) |
| 982 | { |
| 983 | PTR data; |
| 984 | unsigned char *set; |
| 985 | struct string_list *l; |
| 986 | bfd_size_type c; |
| 987 | |
| 988 | data = xmalloc (module_size); |
| 989 | c = 0; |
| 990 | set = (unsigned char *) data; |
| 991 | for (l = modules; l != NULL; l = l->next) |
| 992 | { |
| 993 | *set = strlen (l->string); |
| 994 | strncpy (set + 1, l->string, *set); |
| 995 | set += *set + 1; |
| 996 | ++c; |
| 997 | } |
| 998 | if (! bfd_set_section_contents (outbfd, module_section, data, |
| 999 | (file_ptr) 0, module_size)) |
| 1000 | bfd_fatal ("module section"); |
| 1001 | nlm_fixed_header (outbfd)->moduleDependencyOffset = |
| 1002 | module_section->filepos; |
| 1003 | nlm_fixed_header (outbfd)->numberOfModuleDependencies = c; |
| 1004 | } |
| 1005 | if (rpc_file != NULL) |
| 1006 | { |
| 1007 | PTR data; |
| 1008 | |
| 1009 | data = xmalloc (rpc_size); |
| 1010 | if (fread (data, 1, rpc_size, rpc_data) != rpc_size) |
| 1011 | fprintf (stderr, "%s:%s: read: %s\n", program_name, rpc_file, |
| 1012 | strerror (errno)); |
| 1013 | else |
| 1014 | { |
| 1015 | if (! bfd_set_section_contents (outbfd, rpc_section, data, |
| 1016 | (file_ptr) 0, rpc_size)) |
| 1017 | bfd_fatal ("rpc section"); |
| 1018 | nlm_extended_header (outbfd)->RPCDataOffset = |
| 1019 | rpc_section->filepos; |
| 1020 | nlm_extended_header (outbfd)->RPCDataLength = rpc_size; |
| 1021 | } |
| 1022 | free (data); |
| 1023 | } |
| 1024 | if (sharelib_file != NULL) |
| 1025 | { |
| 1026 | PTR data; |
| 1027 | |
| 1028 | data = xmalloc (shared_size); |
| 1029 | if (fseek (shared_data, shared_offset, SEEK_SET) != 0 |
| 1030 | || fread (data, 1, shared_size, shared_data) != shared_size) |
| 1031 | fprintf (stderr, "%s:%s: read: %s\n", program_name, sharelib_file, |
| 1032 | strerror (errno)); |
| 1033 | else |
| 1034 | { |
| 1035 | if (! bfd_set_section_contents (outbfd, shared_section, data, |
| 1036 | (file_ptr) 0, shared_size)) |
| 1037 | bfd_fatal ("shared section"); |
| 1038 | } |
| 1039 | nlm_extended_header (outbfd)->sharedCodeOffset = |
| 1040 | sharedhdr.codeImageOffset - shared_offset + shared_section->filepos; |
| 1041 | nlm_extended_header (outbfd)->sharedCodeLength = |
| 1042 | sharedhdr.codeImageSize; |
| 1043 | nlm_extended_header (outbfd)->sharedDataOffset = |
| 1044 | sharedhdr.dataImageOffset - shared_offset + shared_section->filepos; |
| 1045 | nlm_extended_header (outbfd)->sharedDataLength = |
| 1046 | sharedhdr.dataImageSize; |
| 1047 | nlm_extended_header (outbfd)->sharedRelocationFixupOffset = |
| 1048 | (sharedhdr.relocationFixupOffset |
| 1049 | - shared_offset |
| 1050 | + shared_section->filepos); |
| 1051 | nlm_extended_header (outbfd)->sharedRelocationFixupCount = |
| 1052 | sharedhdr.numberOfRelocationFixups; |
| 1053 | nlm_extended_header (outbfd)->sharedExternalReferenceOffset = |
| 1054 | (sharedhdr.externalReferencesOffset |
| 1055 | - shared_offset |
| 1056 | + shared_section->filepos); |
| 1057 | nlm_extended_header (outbfd)->sharedExternalReferenceCount = |
| 1058 | sharedhdr.numberOfExternalReferences; |
| 1059 | nlm_extended_header (outbfd)->sharedPublicsOffset = |
| 1060 | sharedhdr.publicsOffset - shared_offset + shared_section->filepos; |
| 1061 | nlm_extended_header (outbfd)->sharedPublicsCount = |
| 1062 | sharedhdr.numberOfPublics; |
| 1063 | nlm_extended_header (outbfd)->sharedDebugRecordOffset = |
| 1064 | sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos; |
| 1065 | nlm_extended_header (outbfd)->sharedDebugRecordCount = |
| 1066 | sharedhdr.numberOfDebugRecords; |
| 1067 | nlm_extended_header (outbfd)->SharedInitializationOffset = |
| 1068 | sharedhdr.codeStartOffset; |
| 1069 | nlm_extended_header (outbfd)->SharedExitProcedureOffset = |
| 1070 | sharedhdr.exitProcedureOffset; |
| 1071 | free (data); |
| 1072 | } |
| 1073 | len = strlen (output_file); |
| 1074 | if (len > NLM_MODULE_NAME_SIZE - 2) |
| 1075 | len = NLM_MODULE_NAME_SIZE - 2; |
| 1076 | nlm_fixed_header (outbfd)->moduleName[0] = len; |
| 1077 | |
| 1078 | strncpy (nlm_fixed_header (outbfd)->moduleName + 1, output_file, |
| 1079 | NLM_MODULE_NAME_SIZE - 2); |
| 1080 | nlm_fixed_header (outbfd)->moduleName[NLM_MODULE_NAME_SIZE - 1] = '\0'; |
| 1081 | for (modname = nlm_fixed_header (outbfd)->moduleName; |
| 1082 | *modname != '\0'; |
| 1083 | modname++) |
| 1084 | if (islower (*modname)) |
| 1085 | *modname = toupper (*modname); |
| 1086 | |
| 1087 | strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG", |
| 1088 | NLM_OLD_THREAD_NAME_LENGTH); |
| 1089 | |
| 1090 | nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos; |
| 1091 | nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec); |
| 1092 | |
| 1093 | if (! bfd_close (outbfd)) |
| 1094 | bfd_fatal (output_file); |
| 1095 | if (! bfd_close (inbfd)) |
| 1096 | bfd_fatal (input_file); |
| 1097 | |
| 1098 | if (unlink_on_exit != NULL) |
| 1099 | unlink (unlink_on_exit); |
| 1100 | |
| 1101 | return 0; |
| 1102 | } |
| 1103 | \f |
| 1104 | /* Display a help message and exit. */ |
| 1105 | |
| 1106 | static void |
| 1107 | show_help () |
| 1108 | { |
| 1109 | printf ("%s: Convert an object file into a NetWare Loadable Module\n", |
| 1110 | program_name); |
| 1111 | show_usage (stdout, 0); |
| 1112 | } |
| 1113 | |
| 1114 | /* Show a usage message and exit. */ |
| 1115 | |
| 1116 | static void |
| 1117 | show_usage (file, status) |
| 1118 | FILE *file; |
| 1119 | int status; |
| 1120 | { |
| 1121 | fprintf (file, "\ |
| 1122 | Usage: %s [-dhV] [-I bfdname] [-O bfdname] [-T header-file] [-l linker]\n\ |
| 1123 | [--input-target=bfdname] [--output-target=bfdname]\n\ |
| 1124 | [--header-file=file] [--linker=linker] [--debug]\n\ |
| 1125 | [--help] [--version]\n\ |
| 1126 | [in-file [out-file]]\n", |
| 1127 | program_name); |
| 1128 | exit (status); |
| 1129 | } |
| 1130 | \f |
| 1131 | /* Select the output format based on the input architecture, machine, |
| 1132 | and endianness. This chooses the appropriate NLM target. */ |
| 1133 | |
| 1134 | static const char * |
| 1135 | select_output_format (arch, mach, bigendian) |
| 1136 | enum bfd_architecture arch; |
| 1137 | unsigned long mach; |
| 1138 | boolean bigendian; |
| 1139 | { |
| 1140 | switch (arch) |
| 1141 | { |
| 1142 | #ifdef NLMCONV_I386 |
| 1143 | case bfd_arch_i386: |
| 1144 | return "nlm32-i386"; |
| 1145 | #endif |
| 1146 | #ifdef NLMCONV_SPARC |
| 1147 | case bfd_arch_sparc: |
| 1148 | return "nlm32-sparc"; |
| 1149 | #endif |
| 1150 | #ifdef NLMCONV_ALPHA |
| 1151 | case bfd_arch_alpha: |
| 1152 | return "nlm32-alpha"; |
| 1153 | #endif |
| 1154 | #ifdef NLMCONV_POWERPC |
| 1155 | case bfd_arch_powerpc: |
| 1156 | return "nlm32-powerpc"; |
| 1157 | #endif |
| 1158 | default: |
| 1159 | fprintf (stderr, "%s: support not compiled in for %s\n", |
| 1160 | program_name, bfd_printable_arch_mach (arch, mach)); |
| 1161 | exit (1); |
| 1162 | /* Avoid warning. */ |
| 1163 | return NULL; |
| 1164 | } |
| 1165 | /*NOTREACHED*/ |
| 1166 | } |
| 1167 | \f |
| 1168 | /* The BFD sections are copied in two passes. This function selects |
| 1169 | the output section for each input section, and sets up the section |
| 1170 | name, size, etc. */ |
| 1171 | |
| 1172 | static void |
| 1173 | setup_sections (inbfd, insec, data_ptr) |
| 1174 | bfd *inbfd; |
| 1175 | asection *insec; |
| 1176 | PTR data_ptr; |
| 1177 | { |
| 1178 | bfd *outbfd = (bfd *) data_ptr; |
| 1179 | flagword f; |
| 1180 | const char *outname; |
| 1181 | asection *outsec; |
| 1182 | bfd_vma offset; |
| 1183 | bfd_size_type align; |
| 1184 | bfd_size_type add; |
| 1185 | bfd_size_type secsecsize; |
| 1186 | |
| 1187 | f = bfd_get_section_flags (inbfd, insec); |
| 1188 | if (f & SEC_CODE) |
| 1189 | outname = NLM_CODE_NAME; |
| 1190 | else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS)) |
| 1191 | outname = NLM_INITIALIZED_DATA_NAME; |
| 1192 | else if (f & SEC_ALLOC) |
| 1193 | outname = NLM_UNINITIALIZED_DATA_NAME; |
| 1194 | else |
| 1195 | outname = bfd_section_name (inbfd, insec); |
| 1196 | |
| 1197 | outsec = bfd_get_section_by_name (outbfd, outname); |
| 1198 | if (outsec == NULL) |
| 1199 | { |
| 1200 | outsec = bfd_make_section (outbfd, outname); |
| 1201 | if (outsec == NULL) |
| 1202 | bfd_fatal ("make section"); |
| 1203 | } |
| 1204 | |
| 1205 | insec->output_section = outsec; |
| 1206 | |
| 1207 | offset = bfd_section_size (outbfd, outsec); |
| 1208 | align = 1 << bfd_section_alignment (inbfd, insec); |
| 1209 | add = ((offset + align - 1) &~ (align - 1)) - offset; |
| 1210 | insec->output_offset = offset + add; |
| 1211 | |
| 1212 | if (! bfd_set_section_size (outbfd, outsec, |
| 1213 | (bfd_section_size (outbfd, outsec) |
| 1214 | + bfd_section_size (inbfd, insec) |
| 1215 | + add))) |
| 1216 | bfd_fatal ("set section size"); |
| 1217 | |
| 1218 | if ((bfd_section_alignment (inbfd, insec) |
| 1219 | > bfd_section_alignment (outbfd, outsec)) |
| 1220 | && ! bfd_set_section_alignment (outbfd, outsec, |
| 1221 | bfd_section_alignment (inbfd, insec))) |
| 1222 | bfd_fatal ("set section alignment"); |
| 1223 | |
| 1224 | if (! bfd_set_section_flags (outbfd, outsec, f)) |
| 1225 | bfd_fatal ("set section flags"); |
| 1226 | |
| 1227 | bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0); |
| 1228 | |
| 1229 | /* For each input section we allocate space for an entry in |
| 1230 | .nlmsections. */ |
| 1231 | secsecsize = bfd_section_size (outbfd, secsec); |
| 1232 | secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1; |
| 1233 | secsecsize = (secsecsize + 3) &~ 3; |
| 1234 | secsecsize += 8; |
| 1235 | if (! bfd_set_section_size (outbfd, secsec, secsecsize)) |
| 1236 | bfd_fatal ("set .nlmsections size"); |
| 1237 | } |
| 1238 | |
| 1239 | /* Copy the section contents. */ |
| 1240 | |
| 1241 | static void |
| 1242 | copy_sections (inbfd, insec, data_ptr) |
| 1243 | bfd *inbfd; |
| 1244 | asection *insec; |
| 1245 | PTR data_ptr; |
| 1246 | { |
| 1247 | static bfd_size_type secsecoff = 0; |
| 1248 | bfd *outbfd = (bfd *) data_ptr; |
| 1249 | const char *inname; |
| 1250 | asection *outsec; |
| 1251 | bfd_size_type size; |
| 1252 | PTR contents; |
| 1253 | long reloc_size; |
| 1254 | bfd_byte buf[4]; |
| 1255 | bfd_size_type add; |
| 1256 | |
| 1257 | inname = bfd_section_name (inbfd, insec); |
| 1258 | |
| 1259 | outsec = insec->output_section; |
| 1260 | assert (outsec != NULL); |
| 1261 | |
| 1262 | size = bfd_get_section_size_before_reloc (insec); |
| 1263 | |
| 1264 | /* FIXME: Why are these necessary? */ |
| 1265 | insec->_cooked_size = insec->_raw_size; |
| 1266 | insec->reloc_done = true; |
| 1267 | |
| 1268 | if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0) |
| 1269 | contents = NULL; |
| 1270 | else |
| 1271 | { |
| 1272 | contents = xmalloc (size); |
| 1273 | if (! bfd_get_section_contents (inbfd, insec, contents, |
| 1274 | (file_ptr) 0, size)) |
| 1275 | bfd_fatal (bfd_get_filename (inbfd)); |
| 1276 | } |
| 1277 | |
| 1278 | reloc_size = bfd_get_reloc_upper_bound (inbfd, insec); |
| 1279 | if (reloc_size < 0) |
| 1280 | bfd_fatal (bfd_get_filename (inbfd)); |
| 1281 | if (reloc_size != 0) |
| 1282 | { |
| 1283 | arelent **relocs; |
| 1284 | long reloc_count; |
| 1285 | |
| 1286 | relocs = (arelent **) xmalloc (reloc_size); |
| 1287 | reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols); |
| 1288 | if (reloc_count < 0) |
| 1289 | bfd_fatal (bfd_get_filename (inbfd)); |
| 1290 | mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents, |
| 1291 | size); |
| 1292 | |
| 1293 | /* FIXME: refers to internal BFD fields. */ |
| 1294 | if (outsec->orelocation != (arelent **) NULL) |
| 1295 | { |
| 1296 | bfd_size_type total_count; |
| 1297 | arelent **combined; |
| 1298 | |
| 1299 | total_count = reloc_count + outsec->reloc_count; |
| 1300 | combined = (arelent **) xmalloc (total_count * sizeof (arelent *)); |
| 1301 | memcpy (combined, outsec->orelocation, |
| 1302 | outsec->reloc_count * sizeof (arelent *)); |
| 1303 | memcpy (combined + outsec->reloc_count, relocs, |
| 1304 | (size_t) (reloc_count * sizeof (arelent *))); |
| 1305 | free (outsec->orelocation); |
| 1306 | reloc_count = total_count; |
| 1307 | relocs = combined; |
| 1308 | } |
| 1309 | |
| 1310 | bfd_set_reloc (outbfd, outsec, relocs, reloc_count); |
| 1311 | } |
| 1312 | |
| 1313 | if (contents != NULL) |
| 1314 | { |
| 1315 | if (! bfd_set_section_contents (outbfd, outsec, contents, |
| 1316 | insec->output_offset, size)) |
| 1317 | bfd_fatal (bfd_get_filename (outbfd)); |
| 1318 | free (contents); |
| 1319 | } |
| 1320 | |
| 1321 | /* Add this section to .nlmsections. */ |
| 1322 | if (! bfd_set_section_contents (outbfd, secsec, (PTR) inname, secsecoff, |
| 1323 | strlen (inname) + 1)) |
| 1324 | bfd_fatal ("set .nlmsection contents"); |
| 1325 | secsecoff += strlen (inname) + 1; |
| 1326 | |
| 1327 | add = ((secsecoff + 3) &~ 3) - secsecoff; |
| 1328 | if (add != 0) |
| 1329 | { |
| 1330 | bfd_h_put_32 (outbfd, (bfd_vma) 0, buf); |
| 1331 | if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add)) |
| 1332 | bfd_fatal ("set .nlmsection contents"); |
| 1333 | secsecoff += add; |
| 1334 | } |
| 1335 | |
| 1336 | if (contents != NULL) |
| 1337 | bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf); |
| 1338 | else |
| 1339 | bfd_h_put_32 (outbfd, (bfd_vma) 0, buf); |
| 1340 | if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4)) |
| 1341 | bfd_fatal ("set .nlmsection contents"); |
| 1342 | secsecoff += 4; |
| 1343 | |
| 1344 | bfd_h_put_32 (outbfd, (bfd_vma) size, buf); |
| 1345 | if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4)) |
| 1346 | bfd_fatal ("set .nlmsection contents"); |
| 1347 | secsecoff += 4; |
| 1348 | } |
| 1349 | |
| 1350 | /* Some, perhaps all, NetWare targets require changing the relocs used |
| 1351 | by the input formats. */ |
| 1352 | |
| 1353 | static void |
| 1354 | mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents, |
| 1355 | contents_size) |
| 1356 | bfd *outbfd; |
| 1357 | asection *insec; |
| 1358 | arelent ***relocs_ptr; |
| 1359 | long *reloc_count_ptr; |
| 1360 | char *contents; |
| 1361 | bfd_size_type contents_size; |
| 1362 | { |
| 1363 | switch (bfd_get_arch (outbfd)) |
| 1364 | { |
| 1365 | #ifdef NLMCONV_I386 |
| 1366 | case bfd_arch_i386: |
| 1367 | i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, |
| 1368 | contents, contents_size); |
| 1369 | break; |
| 1370 | #endif |
| 1371 | #ifdef NLMCONV_ALPHA |
| 1372 | case bfd_arch_alpha: |
| 1373 | alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, |
| 1374 | contents, contents_size); |
| 1375 | break; |
| 1376 | #endif |
| 1377 | #ifdef NLMCONV_POWERPC |
| 1378 | case bfd_arch_powerpc: |
| 1379 | powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, |
| 1380 | contents, contents_size); |
| 1381 | break; |
| 1382 | #endif |
| 1383 | default: |
| 1384 | default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, |
| 1385 | contents, contents_size); |
| 1386 | break; |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | /* By default all we need to do for relocs is change the address by |
| 1391 | the output_offset. */ |
| 1392 | |
| 1393 | /*ARGSUSED*/ |
| 1394 | static void |
| 1395 | default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents, |
| 1396 | contents_size) |
| 1397 | bfd *outbfd; |
| 1398 | asection *insec; |
| 1399 | arelent ***relocs_ptr; |
| 1400 | long *reloc_count_ptr; |
| 1401 | char *contents; |
| 1402 | bfd_size_type contents_size; |
| 1403 | { |
| 1404 | if (insec->output_offset != 0) |
| 1405 | { |
| 1406 | long reloc_count; |
| 1407 | register arelent **relocs; |
| 1408 | register long i; |
| 1409 | |
| 1410 | reloc_count = *reloc_count_ptr; |
| 1411 | relocs = *relocs_ptr; |
| 1412 | for (i = 0; i < reloc_count; i++, relocs++) |
| 1413 | (*relocs)->address += insec->output_offset; |
| 1414 | } |
| 1415 | } |
| 1416 | \f |
| 1417 | #ifdef NLMCONV_I386 |
| 1418 | |
| 1419 | /* NetWare on the i386 supports a restricted set of relocs, which are |
| 1420 | different from those used on other i386 targets. This routine |
| 1421 | converts the relocs. It is, obviously, very target dependent. At |
| 1422 | the moment, the nlm32-i386 backend performs similar translations; |
| 1423 | however, it is more reliable and efficient to do them here. */ |
| 1424 | |
| 1425 | static reloc_howto_type nlm_i386_pcrel_howto = |
| 1426 | HOWTO (1, /* type */ |
| 1427 | 0, /* rightshift */ |
| 1428 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1429 | 32, /* bitsize */ |
| 1430 | true, /* pc_relative */ |
| 1431 | 0, /* bitpos */ |
| 1432 | complain_overflow_signed, /* complain_on_overflow */ |
| 1433 | 0, /* special_function */ |
| 1434 | "DISP32", /* name */ |
| 1435 | true, /* partial_inplace */ |
| 1436 | 0xffffffff, /* src_mask */ |
| 1437 | 0xffffffff, /* dst_mask */ |
| 1438 | true); /* pcrel_offset */ |
| 1439 | |
| 1440 | static void |
| 1441 | i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents, |
| 1442 | contents_size) |
| 1443 | bfd *outbfd; |
| 1444 | asection *insec; |
| 1445 | arelent ***relocs_ptr; |
| 1446 | long *reloc_count_ptr; |
| 1447 | char *contents; |
| 1448 | bfd_size_type contents_size; |
| 1449 | { |
| 1450 | long reloc_count, i; |
| 1451 | arelent **relocs; |
| 1452 | |
| 1453 | reloc_count = *reloc_count_ptr; |
| 1454 | relocs = *relocs_ptr; |
| 1455 | for (i = 0; i < reloc_count; i++) |
| 1456 | { |
| 1457 | arelent *rel; |
| 1458 | asymbol *sym; |
| 1459 | bfd_size_type address; |
| 1460 | bfd_vma addend; |
| 1461 | |
| 1462 | rel = *relocs++; |
| 1463 | sym = *rel->sym_ptr_ptr; |
| 1464 | |
| 1465 | /* We're moving the relocs from the input section to the output |
| 1466 | section, so we must adjust the address accordingly. */ |
| 1467 | address = rel->address; |
| 1468 | rel->address += insec->output_offset; |
| 1469 | |
| 1470 | /* Note that no serious harm will ensue if we fail to change a |
| 1471 | reloc. The backend will fail when writing out the reloc. */ |
| 1472 | |
| 1473 | /* Make sure this reloc is within the data we have. We use only |
| 1474 | 4 byte relocs here, so we insist on having 4 bytes. */ |
| 1475 | if (address + 4 > contents_size) |
| 1476 | continue; |
| 1477 | |
| 1478 | /* A PC relative reloc entirely within a single section is |
| 1479 | completely unnecessary. This can be generated by ld -r. */ |
| 1480 | if (sym == insec->symbol |
| 1481 | && rel->howto != NULL |
| 1482 | && rel->howto->pc_relative |
| 1483 | && ! rel->howto->pcrel_offset) |
| 1484 | { |
| 1485 | --*reloc_count_ptr; |
| 1486 | --relocs; |
| 1487 | memmove (relocs, relocs + 1, |
| 1488 | (size_t) ((reloc_count - i) * sizeof (arelent *))); |
| 1489 | continue; |
| 1490 | } |
| 1491 | |
| 1492 | /* Get the amount the relocation will add in. */ |
| 1493 | addend = rel->addend + sym->value; |
| 1494 | |
| 1495 | /* NetWare doesn't support PC relative relocs against defined |
| 1496 | symbols, so we have to eliminate them by doing the relocation |
| 1497 | now. We can only do this if the reloc is within a single |
| 1498 | section. */ |
| 1499 | if (rel->howto != NULL |
| 1500 | && rel->howto->pc_relative |
| 1501 | && bfd_get_section (sym) == insec->output_section) |
| 1502 | { |
| 1503 | bfd_vma val; |
| 1504 | |
| 1505 | if (rel->howto->pcrel_offset) |
| 1506 | addend -= address; |
| 1507 | |
| 1508 | val = bfd_get_32 (outbfd, (bfd_byte *) contents + address); |
| 1509 | val += addend; |
| 1510 | bfd_put_32 (outbfd, val, (bfd_byte *) contents + address); |
| 1511 | |
| 1512 | --*reloc_count_ptr; |
| 1513 | --relocs; |
| 1514 | memmove (relocs, relocs + 1, |
| 1515 | (size_t) ((reloc_count - i) * sizeof (arelent *))); |
| 1516 | continue; |
| 1517 | } |
| 1518 | |
| 1519 | /* NetWare doesn't support reloc addends, so we get rid of them |
| 1520 | here by simply adding them into the object data. We handle |
| 1521 | the symbol value, if any, the same way. */ |
| 1522 | if (addend != 0 |
| 1523 | && rel->howto != NULL |
| 1524 | && rel->howto->rightshift == 0 |
| 1525 | && rel->howto->size == 2 |
| 1526 | && rel->howto->bitsize == 32 |
| 1527 | && rel->howto->bitpos == 0 |
| 1528 | && rel->howto->src_mask == 0xffffffff |
| 1529 | && rel->howto->dst_mask == 0xffffffff) |
| 1530 | { |
| 1531 | bfd_vma val; |
| 1532 | |
| 1533 | val = bfd_get_32 (outbfd, (bfd_byte *) contents + address); |
| 1534 | val += addend; |
| 1535 | bfd_put_32 (outbfd, val, (bfd_byte *) contents + address); |
| 1536 | |
| 1537 | /* Adjust the reloc for the changes we just made. */ |
| 1538 | rel->addend = 0; |
| 1539 | if (! bfd_is_und_section (bfd_get_section (sym))) |
| 1540 | rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr; |
| 1541 | } |
| 1542 | |
| 1543 | /* NetWare uses a reloc with pcrel_offset set. We adjust |
| 1544 | pc_relative relocs accordingly. We are going to change the |
| 1545 | howto field, so we can only do this if the current one is |
| 1546 | compatible. We should check that special_function is NULL |
| 1547 | here, but at the moment coff-i386 uses a special_function |
| 1548 | which does not affect what we are doing here. */ |
| 1549 | if (rel->howto != NULL |
| 1550 | && rel->howto->pc_relative |
| 1551 | && ! rel->howto->pcrel_offset |
| 1552 | && rel->howto->rightshift == 0 |
| 1553 | && rel->howto->size == 2 |
| 1554 | && rel->howto->bitsize == 32 |
| 1555 | && rel->howto->bitpos == 0 |
| 1556 | && rel->howto->src_mask == 0xffffffff |
| 1557 | && rel->howto->dst_mask == 0xffffffff) |
| 1558 | { |
| 1559 | bfd_vma val; |
| 1560 | |
| 1561 | /* When pcrel_offset is not set, it means that the negative |
| 1562 | of the address of the memory location is stored in the |
| 1563 | memory location. We must add it back in. */ |
| 1564 | val = bfd_get_32 (outbfd, (bfd_byte *) contents + address); |
| 1565 | val += address; |
| 1566 | bfd_put_32 (outbfd, val, (bfd_byte *) contents + address); |
| 1567 | |
| 1568 | /* We must change to a new howto. */ |
| 1569 | rel->howto = &nlm_i386_pcrel_howto; |
| 1570 | } |
| 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | #endif /* NLMCONV_I386 */ |
| 1575 | \f |
| 1576 | #ifdef NLMCONV_ALPHA |
| 1577 | |
| 1578 | /* On the Alpha the first reloc for every section must be a special |
| 1579 | relocs which hold the GP address. Also, the first reloc in the |
| 1580 | file must be a special reloc which holds the address of the .lita |
| 1581 | section. */ |
| 1582 | |
| 1583 | static reloc_howto_type nlm32_alpha_nw_howto = |
| 1584 | HOWTO (ALPHA_R_NW_RELOC, /* type */ |
| 1585 | 0, /* rightshift */ |
| 1586 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1587 | 0, /* bitsize */ |
| 1588 | false, /* pc_relative */ |
| 1589 | 0, /* bitpos */ |
| 1590 | complain_overflow_dont, /* complain_on_overflow */ |
| 1591 | 0, /* special_function */ |
| 1592 | "NW_RELOC", /* name */ |
| 1593 | false, /* partial_inplace */ |
| 1594 | 0, /* src_mask */ |
| 1595 | 0, /* dst_mask */ |
| 1596 | false); /* pcrel_offset */ |
| 1597 | |
| 1598 | /*ARGSUSED*/ |
| 1599 | static void |
| 1600 | alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents, |
| 1601 | contents_size) |
| 1602 | bfd *outbfd; |
| 1603 | asection *insec; |
| 1604 | register arelent ***relocs_ptr; |
| 1605 | long *reloc_count_ptr; |
| 1606 | char *contents; |
| 1607 | bfd_size_type contents_size; |
| 1608 | { |
| 1609 | long old_reloc_count; |
| 1610 | arelent **old_relocs; |
| 1611 | register arelent **relocs; |
| 1612 | |
| 1613 | old_reloc_count = *reloc_count_ptr; |
| 1614 | old_relocs = *relocs_ptr; |
| 1615 | relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *)); |
| 1616 | *relocs_ptr = relocs; |
| 1617 | |
| 1618 | if (nlm_alpha_backend_data (outbfd)->lita_address == 0) |
| 1619 | { |
| 1620 | bfd *inbfd; |
| 1621 | asection *lita_section; |
| 1622 | |
| 1623 | inbfd = insec->owner; |
| 1624 | lita_section = bfd_get_section_by_name (inbfd, _LITA); |
| 1625 | if (lita_section != (asection *) NULL) |
| 1626 | { |
| 1627 | nlm_alpha_backend_data (outbfd)->lita_address = |
| 1628 | bfd_get_section_vma (inbfd, lita_section); |
| 1629 | nlm_alpha_backend_data (outbfd)->lita_size = |
| 1630 | bfd_section_size (inbfd, lita_section); |
| 1631 | } |
| 1632 | else |
| 1633 | { |
| 1634 | /* Avoid outputting this reloc again. */ |
| 1635 | nlm_alpha_backend_data (outbfd)->lita_address = 4; |
| 1636 | } |
| 1637 | |
| 1638 | *relocs = (arelent *) xmalloc (sizeof (arelent)); |
| 1639 | (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 1640 | (*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address; |
| 1641 | (*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1; |
| 1642 | (*relocs)->howto = &nlm32_alpha_nw_howto; |
| 1643 | ++relocs; |
| 1644 | ++(*reloc_count_ptr); |
| 1645 | } |
| 1646 | |
| 1647 | /* Get the GP value from bfd. */ |
| 1648 | if (nlm_alpha_backend_data (outbfd)->gp == 0) |
| 1649 | nlm_alpha_backend_data (outbfd)->gp = |
| 1650 | bfd_ecoff_get_gp_value (insec->owner); |
| 1651 | |
| 1652 | *relocs = (arelent *) xmalloc (sizeof (arelent)); |
| 1653 | (*relocs)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 1654 | (*relocs)->address = nlm_alpha_backend_data (outbfd)->gp; |
| 1655 | (*relocs)->addend = 0; |
| 1656 | (*relocs)->howto = &nlm32_alpha_nw_howto; |
| 1657 | ++relocs; |
| 1658 | ++(*reloc_count_ptr); |
| 1659 | |
| 1660 | memcpy ((PTR) relocs, (PTR) old_relocs, |
| 1661 | (size_t) old_reloc_count * sizeof (arelent *)); |
| 1662 | relocs[old_reloc_count] = (arelent *) NULL; |
| 1663 | |
| 1664 | free (old_relocs); |
| 1665 | |
| 1666 | if (insec->output_offset != 0) |
| 1667 | { |
| 1668 | register bfd_size_type i; |
| 1669 | |
| 1670 | for (i = 0; i < old_reloc_count; i++, relocs++) |
| 1671 | (*relocs)->address += insec->output_offset; |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | #endif /* NLMCONV_ALPHA */ |
| 1676 | \f |
| 1677 | #ifdef NLMCONV_POWERPC |
| 1678 | |
| 1679 | /* We keep a linked list of stubs which we must build. Because BFD |
| 1680 | requires us to know the sizes of all sections before we can set the |
| 1681 | contents of any, we must figure out which stubs we want to build |
| 1682 | before we can actually build any of them. */ |
| 1683 | |
| 1684 | struct powerpc_stub |
| 1685 | { |
| 1686 | /* Next stub in linked list. */ |
| 1687 | struct powerpc_stub *next; |
| 1688 | |
| 1689 | /* Symbol whose value is the start of the stub. This is a symbol |
| 1690 | whose name begins with `.'. */ |
| 1691 | asymbol *start; |
| 1692 | |
| 1693 | /* Symbol we are going to create a reloc against. This is a symbol |
| 1694 | with the same name as START but without the leading `.'. */ |
| 1695 | asymbol *reloc; |
| 1696 | |
| 1697 | /* The TOC index for this stub. This is the index into the TOC |
| 1698 | section at which the reloc is created. */ |
| 1699 | unsigned int toc_index; |
| 1700 | }; |
| 1701 | |
| 1702 | /* The linked list of stubs. */ |
| 1703 | |
| 1704 | static struct powerpc_stub *powerpc_stubs; |
| 1705 | |
| 1706 | /* This is what a stub looks like. The first instruction will get |
| 1707 | adjusted with the correct TOC index. */ |
| 1708 | |
| 1709 | static unsigned long powerpc_stub_insns[] = |
| 1710 | { |
| 1711 | 0x81820000, /* lwz r12,0(r2) */ |
| 1712 | 0x90410014, /* stw r2,20(r1) */ |
| 1713 | 0x800c0000, /* lwz r0,0(r12) */ |
| 1714 | 0x804c0004, /* lwz r2,r(r12) */ |
| 1715 | 0x7c0903a6, /* mtctr r0 */ |
| 1716 | 0x4e800420, /* bctr */ |
| 1717 | 0, /* Traceback table. */ |
| 1718 | 0xc8000, |
| 1719 | 0 |
| 1720 | }; |
| 1721 | |
| 1722 | #define POWERPC_STUB_INSN_COUNT \ |
| 1723 | (sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0]) |
| 1724 | |
| 1725 | #define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT) |
| 1726 | |
| 1727 | /* Each stub uses a four byte TOC entry. */ |
| 1728 | #define POWERPC_STUB_TOC_ENTRY_SIZE (4) |
| 1729 | |
| 1730 | /* The original size of the .got section. */ |
| 1731 | static bfd_size_type powerpc_initial_got_size; |
| 1732 | |
| 1733 | /* Look for all undefined symbols beginning with `.', and prepare to |
| 1734 | build a stub for each one. */ |
| 1735 | |
| 1736 | static void |
| 1737 | powerpc_build_stubs (inbfd, outbfd, symbols_ptr, symcount_ptr) |
| 1738 | bfd *inbfd; |
| 1739 | bfd *outbfd; |
| 1740 | asymbol ***symbols_ptr; |
| 1741 | long *symcount_ptr; |
| 1742 | { |
| 1743 | asection *stub_sec; |
| 1744 | asection *got_sec; |
| 1745 | unsigned int got_base; |
| 1746 | long i; |
| 1747 | long symcount; |
| 1748 | long stubcount; |
| 1749 | |
| 1750 | /* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for |
| 1751 | the section to prevent copy_sections from reading from it. */ |
| 1752 | stub_sec = bfd_make_section (inbfd, ".stubs"); |
| 1753 | if (stub_sec == (asection *) NULL |
| 1754 | || ! bfd_set_section_flags (inbfd, stub_sec, |
| 1755 | (SEC_CODE |
| 1756 | | SEC_RELOC |
| 1757 | | SEC_ALLOC |
| 1758 | | SEC_LOAD)) |
| 1759 | || ! bfd_set_section_alignment (inbfd, stub_sec, 2)) |
| 1760 | bfd_fatal (".stubs"); |
| 1761 | |
| 1762 | /* Get the TOC section, which is named .got. */ |
| 1763 | got_sec = bfd_get_section_by_name (inbfd, ".got"); |
| 1764 | if (got_sec == (asection *) NULL) |
| 1765 | { |
| 1766 | got_sec = bfd_make_section (inbfd, ".got"); |
| 1767 | if (got_sec == (asection *) NULL |
| 1768 | || ! bfd_set_section_flags (inbfd, got_sec, |
| 1769 | (SEC_DATA |
| 1770 | | SEC_RELOC |
| 1771 | | SEC_ALLOC |
| 1772 | | SEC_LOAD |
| 1773 | | SEC_HAS_CONTENTS)) |
| 1774 | || ! bfd_set_section_alignment (inbfd, got_sec, 2)) |
| 1775 | bfd_fatal (".got"); |
| 1776 | } |
| 1777 | |
| 1778 | powerpc_initial_got_size = bfd_section_size (inbfd, got_sec); |
| 1779 | got_base = powerpc_initial_got_size; |
| 1780 | got_base = (got_base + 3) &~ 3; |
| 1781 | |
| 1782 | stubcount = 0; |
| 1783 | |
| 1784 | symcount = *symcount_ptr; |
| 1785 | for (i = 0; i < symcount; i++) |
| 1786 | { |
| 1787 | asymbol *sym; |
| 1788 | asymbol *newsym; |
| 1789 | char *newname; |
| 1790 | struct powerpc_stub *item; |
| 1791 | |
| 1792 | sym = (*symbols_ptr)[i]; |
| 1793 | |
| 1794 | /* We must make a stub for every undefined symbol whose name |
| 1795 | starts with '.'. */ |
| 1796 | if (bfd_asymbol_name (sym)[0] != '.' |
| 1797 | || ! bfd_is_und_section (bfd_get_section (sym))) |
| 1798 | continue; |
| 1799 | |
| 1800 | /* Make a new undefined symbol with the same name but without |
| 1801 | the leading `.'. */ |
| 1802 | newsym = (asymbol *) xmalloc (sizeof (asymbol)); |
| 1803 | *newsym = *sym; |
| 1804 | newname = (char *) xmalloc (strlen (bfd_asymbol_name (sym))); |
| 1805 | strcpy (newname, bfd_asymbol_name (sym) + 1); |
| 1806 | newsym->name = newname; |
| 1807 | |
| 1808 | /* Define the `.' symbol to be in the stub section. */ |
| 1809 | sym->section = stub_sec; |
| 1810 | sym->value = stubcount * POWERPC_STUB_SIZE; |
| 1811 | /* We set the BSF_DYNAMIC flag here so that we can check it when |
| 1812 | we are mangling relocs. FIXME: This is a hack. */ |
| 1813 | sym->flags = BSF_LOCAL | BSF_DYNAMIC; |
| 1814 | |
| 1815 | /* Add this stub to the linked list. */ |
| 1816 | item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub)); |
| 1817 | item->start = sym; |
| 1818 | item->reloc = newsym; |
| 1819 | item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE; |
| 1820 | |
| 1821 | item->next = powerpc_stubs; |
| 1822 | powerpc_stubs = item; |
| 1823 | |
| 1824 | ++stubcount; |
| 1825 | } |
| 1826 | |
| 1827 | if (stubcount > 0) |
| 1828 | { |
| 1829 | asymbol **s; |
| 1830 | struct powerpc_stub *l; |
| 1831 | |
| 1832 | /* Add the new symbols we just created to the symbol table. */ |
| 1833 | *symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr, |
| 1834 | ((symcount + stubcount) |
| 1835 | * sizeof (asymbol))); |
| 1836 | *symcount_ptr += stubcount; |
| 1837 | s = &(*symbols_ptr)[symcount]; |
| 1838 | for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next) |
| 1839 | *s++ = l->reloc; |
| 1840 | |
| 1841 | /* Set the size of the .stubs section and increase the size of |
| 1842 | the .got section. */ |
| 1843 | if (! bfd_set_section_size (inbfd, stub_sec, |
| 1844 | stubcount * POWERPC_STUB_SIZE) |
| 1845 | || ! bfd_set_section_size (inbfd, got_sec, |
| 1846 | (got_base |
| 1847 | + (stubcount |
| 1848 | * POWERPC_STUB_TOC_ENTRY_SIZE)))) |
| 1849 | bfd_fatal ("stub section sizes"); |
| 1850 | } |
| 1851 | |
| 1852 | /* PowerPC NetWare requires a custom header. We create it here. |
| 1853 | The first word is the header version number, currently 1. The |
| 1854 | second word is the timestamp of the input file. Unfortunately, |
| 1855 | they do not conform to the emergent standard for custom headers. |
| 1856 | We must fake the version number and timestamp in the offset and |
| 1857 | length fields. */ |
| 1858 | memcpy (nlm_custom_header (outbfd)->stamp, "CuStHeAd", 8); |
| 1859 | nlm_custom_header (outbfd)->hdrLength = 0; |
| 1860 | /* Put version number in dataOffset field. */ |
| 1861 | nlm_custom_header (outbfd)->dataOffset = 1; |
| 1862 | /* Put timestamp in length field. */ |
| 1863 | { |
| 1864 | struct stat s; |
| 1865 | |
| 1866 | if (stat (bfd_get_filename (inbfd), &s) < 0) |
| 1867 | s.st_mtime = 0; |
| 1868 | nlm_custom_header (outbfd)->dataLength = s.st_mtime; |
| 1869 | } |
| 1870 | /* No data stamp. */ |
| 1871 | memset (nlm_custom_header (outbfd)->dataStamp, 0, |
| 1872 | sizeof (nlm_custom_header (outbfd)->dataStamp)); |
| 1873 | } |
| 1874 | |
| 1875 | /* Resolve all the stubs for PowerPC NetWare. We fill in the contents |
| 1876 | of the output section, and create new relocs in the TOC. */ |
| 1877 | |
| 1878 | static void |
| 1879 | powerpc_resolve_stubs (inbfd, outbfd) |
| 1880 | bfd *inbfd; |
| 1881 | bfd *outbfd; |
| 1882 | { |
| 1883 | bfd_byte buf[POWERPC_STUB_SIZE]; |
| 1884 | unsigned int i; |
| 1885 | unsigned int stubcount; |
| 1886 | arelent **relocs; |
| 1887 | asection *got_sec; |
| 1888 | arelent **r; |
| 1889 | struct powerpc_stub *l; |
| 1890 | |
| 1891 | if (powerpc_stubs == (struct powerpc_stub *) NULL) |
| 1892 | return; |
| 1893 | |
| 1894 | for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++) |
| 1895 | bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4); |
| 1896 | |
| 1897 | got_sec = bfd_get_section_by_name (inbfd, ".got"); |
| 1898 | assert (got_sec != (asection *) NULL); |
| 1899 | assert (got_sec->output_section->orelocation == (arelent **) NULL); |
| 1900 | |
| 1901 | stubcount = 0; |
| 1902 | for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next) |
| 1903 | ++stubcount; |
| 1904 | relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *)); |
| 1905 | |
| 1906 | r = relocs; |
| 1907 | for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next) |
| 1908 | { |
| 1909 | arelent *reloc; |
| 1910 | |
| 1911 | /* Adjust the first instruction to use the right TOC index. */ |
| 1912 | bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf); |
| 1913 | |
| 1914 | /* Write this stub out. */ |
| 1915 | if (! bfd_set_section_contents (outbfd, |
| 1916 | bfd_get_section (l->start), |
| 1917 | buf, |
| 1918 | l->start->value, |
| 1919 | POWERPC_STUB_SIZE)) |
| 1920 | bfd_fatal ("writing stub"); |
| 1921 | |
| 1922 | /* Create a new reloc for the TOC entry. */ |
| 1923 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 1924 | reloc->sym_ptr_ptr = &l->reloc; |
| 1925 | reloc->address = l->toc_index + got_sec->output_offset; |
| 1926 | reloc->addend = 0; |
| 1927 | reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32); |
| 1928 | |
| 1929 | *r++ = reloc; |
| 1930 | } |
| 1931 | |
| 1932 | bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount); |
| 1933 | } |
| 1934 | |
| 1935 | /* Adjust relocation entries for PowerPC NetWare. We do not output |
| 1936 | TOC relocations. The object code already contains the offset from |
| 1937 | the TOC pointer. When the function is called, the TOC register, |
| 1938 | r2, will be set to the correct TOC value, so there is no need for |
| 1939 | any further reloc. */ |
| 1940 | |
| 1941 | /*ARGSUSED*/ |
| 1942 | static void |
| 1943 | powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents, |
| 1944 | contents_size) |
| 1945 | bfd *outbfd; |
| 1946 | asection *insec; |
| 1947 | register arelent ***relocs_ptr; |
| 1948 | long *reloc_count_ptr; |
| 1949 | char *contents; |
| 1950 | bfd_size_type contents_size; |
| 1951 | { |
| 1952 | const reloc_howto_type *toc_howto; |
| 1953 | long reloc_count; |
| 1954 | register arelent **relocs; |
| 1955 | register long i; |
| 1956 | |
| 1957 | toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16); |
| 1958 | if (toc_howto == (reloc_howto_type *) NULL) |
| 1959 | abort (); |
| 1960 | |
| 1961 | /* If this is the .got section, clear out all the contents beyond |
| 1962 | the initial size. We must do this here because copy_sections is |
| 1963 | going to write out whatever we return in the contents field. */ |
| 1964 | if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0) |
| 1965 | memset (contents + powerpc_initial_got_size, 0, |
| 1966 | (bfd_get_section_size_after_reloc (insec) |
| 1967 | - powerpc_initial_got_size)); |
| 1968 | |
| 1969 | reloc_count = *reloc_count_ptr; |
| 1970 | relocs = *relocs_ptr; |
| 1971 | for (i = 0; i < reloc_count; i++) |
| 1972 | { |
| 1973 | arelent *rel; |
| 1974 | asymbol *sym; |
| 1975 | bfd_vma symvalue; |
| 1976 | |
| 1977 | rel = *relocs++; |
| 1978 | sym = *rel->sym_ptr_ptr; |
| 1979 | |
| 1980 | /* We must be able to resolve all PC relative relocs at this |
| 1981 | point. If we get a branch to an undefined symbol we build a |
| 1982 | stub, since NetWare will resolve undefined symbols into a |
| 1983 | pointer to a function descriptor. */ |
| 1984 | if (rel->howto->pc_relative) |
| 1985 | { |
| 1986 | /* This check for whether a symbol is in the same section as |
| 1987 | the reloc will be wrong if there is a PC relative reloc |
| 1988 | between two sections both of which were placed in the |
| 1989 | same output section. This should not happen. */ |
| 1990 | if (bfd_get_section (sym) != insec->output_section) |
| 1991 | fprintf (stderr, "%s: unresolved PC relative reloc against %s\n", |
| 1992 | program_name, bfd_asymbol_name (sym)); |
| 1993 | else |
| 1994 | { |
| 1995 | bfd_vma val; |
| 1996 | |
| 1997 | assert (rel->howto->size == 2 && rel->howto->pcrel_offset); |
| 1998 | val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address); |
| 1999 | val = ((val &~ rel->howto->dst_mask) |
| 2000 | | (((val & rel->howto->src_mask) |
| 2001 | + (sym->value - rel->address) |
| 2002 | + rel->addend) |
| 2003 | & rel->howto->dst_mask)); |
| 2004 | bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address); |
| 2005 | |
| 2006 | /* If this reloc is against an stubbed symbol and the |
| 2007 | next instruction is |
| 2008 | cror 31,31,31 |
| 2009 | then we replace the next instruction with |
| 2010 | lwz r2,20(r1) |
| 2011 | This reloads the TOC pointer after a stub call. */ |
| 2012 | if (bfd_asymbol_name (sym)[0] == '.' |
| 2013 | && (sym->flags & BSF_DYNAMIC) != 0 |
| 2014 | && (bfd_get_32 (outbfd, |
| 2015 | (bfd_byte *) contents + rel->address + 4) |
| 2016 | == 0x4ffffb82)) /* cror 31,31,31 */ |
| 2017 | bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */ |
| 2018 | (bfd_byte *) contents + rel->address + 4); |
| 2019 | |
| 2020 | --*reloc_count_ptr; |
| 2021 | --relocs; |
| 2022 | memmove (relocs, relocs + 1, |
| 2023 | (size_t) ((reloc_count - 1) * sizeof (arelent *))); |
| 2024 | continue; |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | /* When considering a TOC reloc, we do not want to include the |
| 2029 | symbol value. The symbol will be start of the TOC section |
| 2030 | (which is named .got). We do want to include the addend. */ |
| 2031 | if (rel->howto == toc_howto) |
| 2032 | symvalue = 0; |
| 2033 | else |
| 2034 | symvalue = sym->value; |
| 2035 | |
| 2036 | /* If this is a relocation against a symbol with a value, or |
| 2037 | there is a reloc addend, we need to update the addend in the |
| 2038 | object file. */ |
| 2039 | if (symvalue + rel->addend != 0) |
| 2040 | { |
| 2041 | bfd_vma val; |
| 2042 | |
| 2043 | switch (rel->howto->size) |
| 2044 | { |
| 2045 | case 1: |
| 2046 | val = bfd_get_16 (outbfd, |
| 2047 | (bfd_byte *) contents + rel->address); |
| 2048 | val = ((val &~ rel->howto->dst_mask) |
| 2049 | | (((val & rel->howto->src_mask) |
| 2050 | + symvalue |
| 2051 | + rel->addend) |
| 2052 | & rel->howto->dst_mask)); |
| 2053 | if ((bfd_signed_vma) val < - 0x8000 |
| 2054 | || (bfd_signed_vma) val >= 0x8000) |
| 2055 | fprintf (stderr, |
| 2056 | "%s: overflow when adjusting relocation against %s\n", |
| 2057 | program_name, bfd_asymbol_name (sym)); |
| 2058 | bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address); |
| 2059 | break; |
| 2060 | |
| 2061 | case 2: |
| 2062 | val = bfd_get_32 (outbfd, |
| 2063 | (bfd_byte *) contents + rel->address); |
| 2064 | val = ((val &~ rel->howto->dst_mask) |
| 2065 | | (((val & rel->howto->src_mask) |
| 2066 | + symvalue |
| 2067 | + rel->addend) |
| 2068 | & rel->howto->dst_mask)); |
| 2069 | bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address); |
| 2070 | break; |
| 2071 | |
| 2072 | default: |
| 2073 | abort (); |
| 2074 | } |
| 2075 | |
| 2076 | rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr; |
| 2077 | rel->addend = 0; |
| 2078 | } |
| 2079 | |
| 2080 | /* Now that we have incorporated the addend, remove any TOC |
| 2081 | relocs. */ |
| 2082 | if (rel->howto == toc_howto) |
| 2083 | { |
| 2084 | --*reloc_count_ptr; |
| 2085 | --relocs; |
| 2086 | memmove (relocs, relocs + 1, |
| 2087 | (size_t) ((reloc_count - i) * sizeof (arelent *))); |
| 2088 | continue; |
| 2089 | } |
| 2090 | |
| 2091 | rel->address += insec->output_offset; |
| 2092 | } |
| 2093 | } |
| 2094 | |
| 2095 | #endif /* NLMCONV_POWERPC */ |
| 2096 | \f |
| 2097 | /* Name of linker. */ |
| 2098 | #ifndef LD_NAME |
| 2099 | #define LD_NAME "ld" |
| 2100 | #endif |
| 2101 | |
| 2102 | /* Temporary file name base. */ |
| 2103 | static char *temp_filename; |
| 2104 | |
| 2105 | /* The user has specified several input files. Invoke the linker to |
| 2106 | link them all together, and convert and delete the resulting output |
| 2107 | file. */ |
| 2108 | |
| 2109 | static char * |
| 2110 | link_inputs (inputs, ld) |
| 2111 | struct string_list *inputs; |
| 2112 | char *ld; |
| 2113 | { |
| 2114 | size_t c; |
| 2115 | struct string_list *q; |
| 2116 | char **argv; |
| 2117 | size_t i; |
| 2118 | int pid; |
| 2119 | int status; |
| 2120 | |
| 2121 | c = 0; |
| 2122 | for (q = inputs; q != NULL; q = q->next) |
| 2123 | ++c; |
| 2124 | |
| 2125 | argv = (char **) alloca (c + 5); |
| 2126 | |
| 2127 | #ifndef __MSDOS__ |
| 2128 | if (ld == NULL) |
| 2129 | { |
| 2130 | char *p; |
| 2131 | |
| 2132 | /* Find the linker to invoke based on how nlmconv was run. */ |
| 2133 | p = program_name + strlen (program_name); |
| 2134 | while (p != program_name) |
| 2135 | { |
| 2136 | if (p[-1] == '/') |
| 2137 | { |
| 2138 | ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1); |
| 2139 | memcpy (ld, program_name, p - program_name); |
| 2140 | strcpy (ld + (p - program_name), LD_NAME); |
| 2141 | break; |
| 2142 | } |
| 2143 | --p; |
| 2144 | } |
| 2145 | } |
| 2146 | #endif |
| 2147 | |
| 2148 | if (ld == NULL) |
| 2149 | ld = (char *) LD_NAME; |
| 2150 | |
| 2151 | choose_temp_base (); |
| 2152 | |
| 2153 | unlink_on_exit = xmalloc (strlen (temp_filename) + 3); |
| 2154 | sprintf (unlink_on_exit, "%s.O", temp_filename); |
| 2155 | |
| 2156 | argv[0] = ld; |
| 2157 | argv[1] = (char *) "-r"; |
| 2158 | argv[2] = (char *) "-o"; |
| 2159 | argv[3] = unlink_on_exit; |
| 2160 | i = 4; |
| 2161 | for (q = inputs; q != NULL; q = q->next, i++) |
| 2162 | argv[i] = q->string; |
| 2163 | argv[i] = NULL; |
| 2164 | |
| 2165 | if (debug) |
| 2166 | { |
| 2167 | for (i = 0; argv[i] != NULL; i++) |
| 2168 | fprintf (stderr, " %s", argv[i]); |
| 2169 | fprintf (stderr, "\n"); |
| 2170 | } |
| 2171 | |
| 2172 | pid = pexecute (ld, argv); |
| 2173 | |
| 2174 | if (waitpid (pid, &status, 0) < 0) |
| 2175 | { |
| 2176 | perror ("waitpid"); |
| 2177 | unlink (unlink_on_exit); |
| 2178 | exit (1); |
| 2179 | } |
| 2180 | |
| 2181 | if (status != 0) |
| 2182 | { |
| 2183 | fprintf (stderr, "%s: Execution of %s failed\n", program_name, ld); |
| 2184 | unlink (unlink_on_exit); |
| 2185 | exit (1); |
| 2186 | } |
| 2187 | |
| 2188 | return unlink_on_exit; |
| 2189 | } |
| 2190 | |
| 2191 | /* Choose a temporary file name. Stolen from gcc.c. */ |
| 2192 | |
| 2193 | static const char * |
| 2194 | choose_temp_base_try (try, base) |
| 2195 | const char *try; |
| 2196 | const char *base; |
| 2197 | { |
| 2198 | const char *rv; |
| 2199 | |
| 2200 | if (base) |
| 2201 | rv = base; |
| 2202 | else if (try == NULL) |
| 2203 | rv = NULL; |
| 2204 | else if (access (try, R_OK | W_OK) != 0) |
| 2205 | rv = NULL; |
| 2206 | else |
| 2207 | rv = try; |
| 2208 | return rv; |
| 2209 | } |
| 2210 | |
| 2211 | static void |
| 2212 | choose_temp_base () |
| 2213 | { |
| 2214 | const char *base = NULL; |
| 2215 | int len; |
| 2216 | |
| 2217 | base = choose_temp_base_try (getenv ("TMPDIR"), base); |
| 2218 | base = choose_temp_base_try (getenv ("TMP"), base); |
| 2219 | base = choose_temp_base_try (getenv ("TEMP"), base); |
| 2220 | |
| 2221 | #ifdef P_tmpdir |
| 2222 | base = choose_temp_base_try (P_tmpdir, base); |
| 2223 | #endif |
| 2224 | |
| 2225 | base = choose_temp_base_try ("/usr/tmp", base); |
| 2226 | base = choose_temp_base_try ("/tmp", base); |
| 2227 | |
| 2228 | /* If all else fails, use the current directory! */ |
| 2229 | if (base == NULL) |
| 2230 | base = "./"; |
| 2231 | |
| 2232 | len = strlen (base); |
| 2233 | temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1); |
| 2234 | strcpy (temp_filename, base); |
| 2235 | if (len > 0 && temp_filename[len-1] != '/') |
| 2236 | temp_filename[len++] = '/'; |
| 2237 | strcpy (temp_filename + len, "ccXXXXXX"); |
| 2238 | |
| 2239 | mktemp (temp_filename); |
| 2240 | if (*temp_filename == '\0') |
| 2241 | abort (); |
| 2242 | } |
| 2243 | |
| 2244 | /* Execute a job. Stolen from gcc.c. */ |
| 2245 | |
| 2246 | #ifndef OS2 |
| 2247 | #ifdef __MSDOS__ |
| 2248 | |
| 2249 | static int |
| 2250 | pexecute (program, argv) |
| 2251 | char *program; |
| 2252 | char *argv[]; |
| 2253 | { |
| 2254 | char *scmd, *rf; |
| 2255 | FILE *argfile; |
| 2256 | int i; |
| 2257 | |
| 2258 | scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 10); |
| 2259 | rf = scmd + strlen(program) + 2 + el; |
| 2260 | sprintf (scmd, "%s.exe @%s.gp", program, temp_filename); |
| 2261 | argfile = fopen (rf, "w"); |
| 2262 | if (argfile == 0) |
| 2263 | pfatal_with_name (rf); |
| 2264 | |
| 2265 | for (i=1; argv[i]; i++) |
| 2266 | { |
| 2267 | char *cp; |
| 2268 | for (cp = argv[i]; *cp; cp++) |
| 2269 | { |
| 2270 | if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp)) |
| 2271 | fputc ('\\', argfile); |
| 2272 | fputc (*cp, argfile); |
| 2273 | } |
| 2274 | fputc ('\n', argfile); |
| 2275 | } |
| 2276 | fclose (argfile); |
| 2277 | |
| 2278 | i = system (scmd); |
| 2279 | |
| 2280 | remove (rf); |
| 2281 | |
| 2282 | if (i == -1) |
| 2283 | { |
| 2284 | perror (program); |
| 2285 | return MIN_FATAL_STATUS << 8; |
| 2286 | } |
| 2287 | |
| 2288 | return i << 8; |
| 2289 | } |
| 2290 | |
| 2291 | #else /* not __MSDOS__ */ |
| 2292 | |
| 2293 | static int |
| 2294 | pexecute (program, argv) |
| 2295 | char *program; |
| 2296 | char *argv[]; |
| 2297 | { |
| 2298 | int pid; |
| 2299 | int retries, sleep_interval; |
| 2300 | |
| 2301 | /* Fork a subprocess; wait and retry if it fails. */ |
| 2302 | sleep_interval = 1; |
| 2303 | for (retries = 0; retries < 4; retries++) |
| 2304 | { |
| 2305 | pid = vfork (); |
| 2306 | if (pid >= 0) |
| 2307 | break; |
| 2308 | sleep (sleep_interval); |
| 2309 | sleep_interval *= 2; |
| 2310 | } |
| 2311 | |
| 2312 | switch (pid) |
| 2313 | { |
| 2314 | case -1: |
| 2315 | #ifdef vfork |
| 2316 | perror ("fork"); |
| 2317 | #else |
| 2318 | perror ("vfork"); |
| 2319 | #endif |
| 2320 | exit (1); |
| 2321 | /* NOTREACHED */ |
| 2322 | return 0; |
| 2323 | |
| 2324 | case 0: /* child */ |
| 2325 | /* Exec the program. */ |
| 2326 | execvp (program, argv); |
| 2327 | perror (program); |
| 2328 | exit (1); |
| 2329 | /* NOTREACHED */ |
| 2330 | return 0; |
| 2331 | |
| 2332 | default: |
| 2333 | /* Return child's process number. */ |
| 2334 | return pid; |
| 2335 | } |
| 2336 | } |
| 2337 | |
| 2338 | #endif /* not __MSDOS__ */ |
| 2339 | #else /* not OS2 */ |
| 2340 | |
| 2341 | static int |
| 2342 | pexecute (program, argv) |
| 2343 | char *program; |
| 2344 | char *argv[]; |
| 2345 | { |
| 2346 | return spawnvp (1, program, argv); |
| 2347 | } |
| 2348 | #endif /* not OS2 */ |