1# This shell script emits a C file. -*- C -*- 2# It does some substitutions. 3if [ -z "$MACHINE" ]; then 4 OUTPUT_ARCH=${ARCH} 5else 6 OUTPUT_ARCH=${ARCH}:${MACHINE} 7fi 8 9case ${target} in 10 *-*-cygwin*) 11 move_default_addr_high=1 12 ;; 13 *) 14 move_default_addr_high=0; 15 ;; 16esac 17 18rm -f e${EMULATION_NAME}.c 19(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-) 20fragment <<EOF 21/* Copyright (C) 2006-2014 Free Software Foundation, Inc. 22 Written by Kai Tietz, OneVision Software GmbH&CoKg. 23 24 This file is part of the GNU Binutils. 25 26 This program is free software; you can redistribute it and/or modify 27 it under the terms of the GNU General Public License as published by 28 the Free Software Foundation; either version 3 of the License, or 29 (at your option) any later version. 30 31 This program is distributed in the hope that it will be useful, 32 but WITHOUT ANY WARRANTY; without even the implied warranty of 33 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 34 GNU General Public License for more details. 35 36 You should have received a copy of the GNU General Public License 37 along with this program; if not, write to the Free Software 38 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 39 MA 02110-1301, USA. */ 40 41 42/* For WINDOWS_XP64 and higher */ 43/* Based on pe.em, but modified for 64 bit support. */ 44 45#define TARGET_IS_${EMULATION_NAME} 46 47#define COFF_IMAGE_WITH_PE 48#define COFF_WITH_PE 49#define COFF_WITH_pex64 50 51#include "sysdep.h" 52#include "bfd.h" 53#include "bfdlink.h" 54#include "getopt.h" 55#include "libiberty.h" 56#include "filenames.h" 57#include "ld.h" 58#include "ldmain.h" 59#include "ldexp.h" 60#include "ldlang.h" 61#include "ldfile.h" 62#include "ldemul.h" 63#include <ldgram.h> 64#include "ldlex.h" 65#include "ldmisc.h" 66#include "ldctor.h" 67#include "ldbuildid.h" 68#include "coff/internal.h" 69 70/* FIXME: See bfd/peXXigen.c for why we include an architecture specific 71 header in generic PE code. */ 72#include "coff/x86_64.h" 73#include "coff/pe.h" 74 75/* FIXME: These are BFD internal header files, and we should not be 76 using it here. */ 77#include "../bfd/libcoff.h" 78#include "../bfd/libpei.h" 79 80#undef AOUTSZ 81#define AOUTSZ PEPAOUTSZ 82#define PEAOUTHDR PEPAOUTHDR 83 84#include "deffile.h" 85#include "pep-dll.h" 86#include "safe-ctype.h" 87 88/* Permit the emulation parameters to override the default section 89 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes 90 it seem that include/coff/internal.h should not define 91 PE_DEF_SECTION_ALIGNMENT. */ 92#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT} 93#undef PE_DEF_SECTION_ALIGNMENT 94#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT} 95#endif 96 97#ifdef TARGET_IS_i386pep 98#define DLL_SUPPORT 99#endif 100 101#if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT) 102#define PE_DEF_SUBSYSTEM 3 103#undef NT_EXE_IMAGE_BASE 104#define NT_EXE_IMAGE_BASE \ 105 ((bfd_vma) (${move_default_addr_high} ? 0x100400000LL \ 106 : 0x400000LL)) 107#undef NT_DLL_IMAGE_BASE 108#define NT_DLL_IMAGE_BASE \ 109 ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \ 110 : 0x10000000LL)) 111#undef NT_DLL_AUTO_IMAGE_BASE 112#define NT_DLL_AUTO_IMAGE_BASE \ 113 ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \ 114 : 0x61300000LL)) 115#undef NT_DLL_AUTO_IMAGE_MASK 116#define NT_DLL_AUTO_IMAGE_MASK \ 117 ((bfd_vma) (${move_default_addr_high} ? 0x1ffff0000LL \ 118 : 0x0ffc0000LL)) 119#else 120#undef NT_EXE_IMAGE_BASE 121#define NT_EXE_IMAGE_BASE \ 122 ((bfd_vma) (${move_default_addr_high} ? 0x100010000LL \ 123 : 0x10000LL)) 124#undef NT_DLL_IMAGE_BASE 125#define NT_DLL_IMAGE_BASE \ 126 ((bfd_vma) (${move_default_addr_high} ? 0x110000000LL \ 127 : 0x10000000LL)) 128#undef NT_DLL_AUTO_IMAGE_BASE 129#define NT_DLL_AUTO_IMAGE_BASE \ 130 ((bfd_vma) (${move_default_addr_high} ? 0x120000000LL \ 131 : 0x61300000LL)) 132#undef NT_DLL_AUTO_IMAGE_MASK 133#define NT_DLL_AUTO_IMAGE_MASK \ 134 ((bfd_vma) (${move_default_addr_high} ? 0x0ffff0000LL \ 135 : 0x0ffc0000LL)) 136#undef PE_DEF_SECTION_ALIGNMENT 137#define PE_DEF_SUBSYSTEM 2 138#undef PE_DEF_FILE_ALIGNMENT 139#define PE_DEF_FILE_ALIGNMENT 0x00000200 140#define PE_DEF_SECTION_ALIGNMENT 0x00000400 141#endif 142 143static struct internal_extra_pe_aouthdr pep; 144static int dll; 145static int pep_subsystem = ${SUBSYSTEM}; 146static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE; 147static int support_old_code = 0; 148static lang_assignment_statement_type *image_base_statement = 0; 149static unsigned short pe_dll_characteristics = 0; 150static bfd_boolean insert_timestamp = TRUE; 151static const char *emit_build_id; 152 153#ifdef DLL_SUPPORT 154static int pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default). */ 155static char * pep_out_def_filename = NULL; 156static char * pep_implib_filename = NULL; 157static int pep_enable_auto_image_base = 0; 158static char * pep_dll_search_prefix = NULL; 159#endif 160 161extern const char *output_filename; 162 163static int is_underscoring (void) 164{ 165 int u = 0; 166 if (pep_leading_underscore != -1) 167 return pep_leading_underscore; 168 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL)) 169 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL); 170 171 if (u == -1) 172 abort (); 173 pep_leading_underscore = (u != 0 ? 1 : 0); 174 return pep_leading_underscore; 175} 176 177 178static void 179gld_${EMULATION_NAME}_before_parse (void) 180{ 181 is_underscoring (); 182 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); 183 output_filename = "${EXECUTABLE_NAME:-a.exe}"; 184#ifdef DLL_SUPPORT 185 input_flags.dynamic = TRUE; 186 config.has_shared = 1; 187 link_info.pei386_auto_import = 1; 188 link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2. */ 189#endif 190} 191 192/* PE format extra command line options. */ 193 194/* Used for setting flags in the PE header. */ 195enum options 196{ 197 OPTION_BASE_FILE = 300 + 1, 198 OPTION_DLL, 199 OPTION_FILE_ALIGNMENT, 200 OPTION_IMAGE_BASE, 201 OPTION_MAJOR_IMAGE_VERSION, 202 OPTION_MAJOR_OS_VERSION, 203 OPTION_MAJOR_SUBSYSTEM_VERSION, 204 OPTION_MINOR_IMAGE_VERSION, 205 OPTION_MINOR_OS_VERSION, 206 OPTION_MINOR_SUBSYSTEM_VERSION, 207 OPTION_SECTION_ALIGNMENT, 208 OPTION_STACK, 209 OPTION_SUBSYSTEM, 210 OPTION_HEAP, 211 OPTION_SUPPORT_OLD_CODE, 212 OPTION_OUT_DEF, 213 OPTION_EXPORT_ALL, 214 OPTION_EXCLUDE_SYMBOLS, 215 OPTION_EXCLUDE_ALL_SYMBOLS, 216 OPTION_KILL_ATS, 217 OPTION_STDCALL_ALIASES, 218 OPTION_ENABLE_STDCALL_FIXUP, 219 OPTION_DISABLE_STDCALL_FIXUP, 220 OPTION_IMPLIB_FILENAME, 221 OPTION_WARN_DUPLICATE_EXPORTS, 222 OPTION_IMP_COMPAT, 223 OPTION_ENABLE_AUTO_IMAGE_BASE, 224 OPTION_DISABLE_AUTO_IMAGE_BASE, 225 OPTION_DLL_SEARCH_PREFIX, 226 OPTION_NO_DEFAULT_EXCLUDES, 227 OPTION_DLL_ENABLE_AUTO_IMPORT, 228 OPTION_DLL_DISABLE_AUTO_IMPORT, 229 OPTION_ENABLE_EXTRA_PE_DEBUG, 230 OPTION_EXCLUDE_LIBS, 231 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC, 232 OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC, 233 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2, 234 OPTION_EXCLUDE_MODULES_FOR_IMPLIB, 235 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES, 236 OPTION_NO_LEADING_UNDERSCORE, 237 OPTION_LEADING_UNDERSCORE, 238 OPTION_ENABLE_LONG_SECTION_NAMES, 239 OPTION_DISABLE_LONG_SECTION_NAMES, 240 OPTION_HIGH_ENTROPY_VA, 241 OPTION_DYNAMIC_BASE, 242 OPTION_FORCE_INTEGRITY, 243 OPTION_NX_COMPAT, 244 OPTION_NO_ISOLATION, 245 OPTION_NO_SEH, 246 OPTION_NO_BIND, 247 OPTION_WDM_DRIVER, 248 OPTION_INSERT_TIMESTAMP, 249 OPTION_NO_INSERT_TIMESTAMP, 250 OPTION_TERMINAL_SERVER_AWARE, 251 OPTION_BUILD_ID 252}; 253 254static void 255gld${EMULATION_NAME}_add_options 256 (int ns ATTRIBUTE_UNUSED, 257 char **shortopts ATTRIBUTE_UNUSED, 258 int nl, 259 struct option **longopts, 260 int nrl ATTRIBUTE_UNUSED, 261 struct option **really_longopts ATTRIBUTE_UNUSED) 262{ 263 static const struct option xtra_long[] = 264 { 265 /* PE options */ 266 {"base-file", required_argument, NULL, OPTION_BASE_FILE}, 267 {"dll", no_argument, NULL, OPTION_DLL}, 268 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, 269 {"heap", required_argument, NULL, OPTION_HEAP}, 270 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, 271 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, 272 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, 273 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, 274 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, 275 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, 276 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, 277 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, 278 {"stack", required_argument, NULL, OPTION_STACK}, 279 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, 280 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, 281 {"use-nul-prefixed-import-tables", no_argument, NULL, 282 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES}, 283 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE}, 284 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE}, 285#ifdef DLL_SUPPORT 286 /* getopt allows abbreviations, so we do this to stop it 287 from treating -o as an abbreviation for this option. */ 288 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 289 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 290 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL}, 291 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS}, 292 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS}, 293 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, 294 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB}, 295 {"kill-at", no_argument, NULL, OPTION_KILL_ATS}, 296 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES}, 297 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP}, 298 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP}, 299 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME}, 300 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS}, 301 /* getopt() allows abbreviations, so we do this to stop it from 302 treating -c as an abbreviation for these --compat-implib. */ 303 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 304 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 305 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE}, 306 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE}, 307 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX}, 308 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES}, 309 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT}, 310 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT}, 311 {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG}, 312 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC}, 313 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC}, 314 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2}, 315#endif 316 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES}, 317 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES}, 318 {"high-entropy-va", no_argument, NULL, OPTION_HIGH_ENTROPY_VA}, 319 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE}, 320 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY}, 321 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT}, 322 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION}, 323 {"no-seh", no_argument, NULL, OPTION_NO_SEH}, 324 {"no-bind", no_argument, NULL, OPTION_NO_BIND}, 325 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER}, 326 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE}, 327 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP}, 328 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP}, 329 {"build-id", optional_argument, NULL, OPTION_BUILD_ID}, 330 {NULL, no_argument, NULL, 0} 331 }; 332 333 *longopts 334 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); 335 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); 336} 337 338/* PE/WIN32; added routines to get the subsystem type, heap and/or stack 339 parameters which may be input from the command line. */ 340 341typedef struct 342{ 343 void *ptr; 344 int size; 345 bfd_vma value; 346 char *symbol; 347 int inited; 348 /* FALSE for an assembly level symbol and TRUE for a C visible symbol. 349 C visible symbols can be prefixed by underscore dependent on target's 350 settings. */ 351 bfd_boolean is_c_symbol; 352} definfo; 353 354#define GET_INIT_SYMBOL_NAME(IDX) \ 355 (init[(IDX)].symbol \ 356 + ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () == 1)) ? 0 : 1)) 357 358/* Decorates the C visible symbol by underscore, if target requires. */ 359#define U(CSTR) \ 360 ((is_underscoring () == 0) ? CSTR : "_" CSTR) 361 362/* Get size of constant string for a possible underscore prefixed 363 C visible symbol. */ 364#define U_SIZE(CSTR) \ 365 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1)) 366 367#define D(field,symbol,def,usc) {&pep.field, sizeof (pep.field), def, symbol, 0, usc} 368 369static definfo init[] = 370{ 371 /* imagebase must be first */ 372#define IMAGEBASEOFF 0 373 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE), 374#define DLLOFF 1 375 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE}, 376#define MSIMAGEBASEOFF 2 377 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE), 378 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE), 379 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE), 380 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE), 381 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE), 382 D(MajorImageVersion,"__major_image_version__", 0, FALSE), 383 D(MinorImageVersion,"__minor_image_version__", 0, FALSE), 384 D(MajorSubsystemVersion,"__major_subsystem_version__", 5, FALSE), 385 D(MinorSubsystemVersion,"__minor_subsystem_version__", 2, FALSE), 386 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE), 387 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE), 388 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE), 389 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE), 390 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE), 391 D(LoaderFlags,"__loader_flags__", 0x0, FALSE), 392 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE), 393 { NULL, 0, 0, NULL, 0, FALSE} 394}; 395 396 397static void 398gld_${EMULATION_NAME}_list_options (FILE *file) 399{ 400 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n")); 401 fprintf (file, _(" --dll Set image base to the default for DLLs\n")); 402 fprintf (file, _(" --file-alignment <size> Set file alignment\n")); 403 fprintf (file, _(" --heap <size> Set initial size of the heap\n")); 404 fprintf (file, _(" --image-base <address> Set start address of the executable\n")); 405 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n")); 406 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n")); 407 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n")); 408 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n")); 409 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n")); 410 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n")); 411 fprintf (file, _(" --section-alignment <size> Set section alignment\n")); 412 fprintf (file, _(" --stack <size> Set size of the initial stack\n")); 413 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); 414 fprintf (file, _(" --support-old-code Support interworking with old code\n")); 415 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n")); 416 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero. (default)\n")); 417 fprintf (file, _(" This makes binaries non-deterministic\n")); 418#ifdef DLL_SUPPORT 419 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); 420 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); 421 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n")); 422 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n")); 423 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n")); 424 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n")); 425 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n")); 426 fprintf (file, _(" Exclude objects, archive members from auto\n")); 427 fprintf (file, _(" export, place into import library instead.\n")); 428 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n")); 429 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n")); 430 fprintf (file, _(" --out-implib <file> Generate import library\n")); 431 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); 432 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n")); 433 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\ 434 create __imp_<SYMBOL> as well.\n")); 435 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\ 436 unless user specifies one\n")); 437 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n")); 438 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\ 439 an importlib, use <string><basename>.dll\n\ 440 in preference to lib<basename>.dll \n")); 441 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\ 442 __imp_sym for DATA references\n")); 443 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n")); 444 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\ 445 adding pseudo-relocations resolved at\n\ 446 runtime.\n")); 447 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\ 448 auto-imported DATA.\n")); 449 fprintf (file, _(" --enable-extra-pep-debug Enable verbose debug output when building\n\ 450 or linking to DLLs (esp. auto-import)\n")); 451 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\ 452 executable image files\n")); 453 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\ 454 in object files\n")); 455 fprintf (file, _(" --high-entropy-va Image is compatible with 64-bit address space\n\ 456 layout randomization (ASLR)\n")); 457 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\ 458 address space layout randomization (ASLR)\n")); 459 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n")); 460 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n")); 461 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n")); 462 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\ 463 be called in this image\n")); 464 fprintf (file, _(" --no-bind Do not bind this image\n")); 465 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n")); 466 fprintf (file, _(" --tsaware Image is Terminal Server aware\n")); 467 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n")); 468#endif 469} 470 471 472static void 473set_pep_name (char *name, bfd_vma val) 474{ 475 int i; 476 is_underscoring (); 477 /* Find the name and set it. */ 478 for (i = 0; init[i].ptr; i++) 479 { 480 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0) 481 { 482 init[i].value = val; 483 init[i].inited = 1; 484 if (strcmp (name,"__image_base__") == 0) 485 set_pep_name (U ("__ImageBase"), val); 486 return; 487 } 488 } 489 abort (); 490} 491 492static void 493set_entry_point (void) 494{ 495 const char *entry; 496 const char *initial_symbol_char; 497 int i; 498 499 static const struct 500 { 501 const int value; 502 const char *entry; 503 } 504 v[] = 505 { 506 { 1, "NtProcessStartup" }, 507 { 2, "WinMainCRTStartup" }, 508 { 3, "mainCRTStartup" }, 509 { 7, "__PosixProcessStartup" }, 510 { 9, "WinMainCRTStartup" }, 511 {14, "mainCRTStartup" }, 512 { 0, NULL } 513 }; 514 515 /* Entry point name for arbitrary subsystem numbers. */ 516 static const char default_entry[] = "mainCRTStartup"; 517 518 if (link_info.shared || dll) 519 { 520 entry = "DllMainCRTStartup"; 521 } 522 else 523 { 524 for (i = 0; v[i].entry; i++) 525 if (v[i].value == pep_subsystem) 526 break; 527 528 /* If no match, use the default. */ 529 if (v[i].entry != NULL) 530 entry = v[i].entry; 531 else 532 entry = default_entry; 533 } 534 535 /* Now we check target's default for getting proper symbol_char. */ 536 initial_symbol_char = (is_underscoring () != 0 ? "_" : ""); 537 538 if (*initial_symbol_char != '\0') 539 { 540 char *alc_entry; 541 542 /* lang_default_entry expects its argument to be permanently 543 allocated, so we don't free this string. */ 544 alc_entry = xmalloc (strlen (initial_symbol_char) 545 + strlen (entry) 546 + 1); 547 strcpy (alc_entry, initial_symbol_char); 548 strcat (alc_entry, entry); 549 entry = alc_entry; 550 } 551 552 lang_default_entry (entry); 553} 554 555static void 556set_pep_subsystem (void) 557{ 558 const char *sver; 559 char *end; 560 int len; 561 int i; 562 unsigned long temp_subsystem; 563 static const struct 564 { 565 const char *name; 566 const int value; 567 } 568 v[] = 569 { 570 { "native", 1 }, 571 { "windows", 2 }, 572 { "console", 3 }, 573 { "posix", 7 }, 574 { "wince", 9 }, 575 { "xbox", 14 }, 576 { NULL, 0 } 577 }; 578 579 /* Check for the presence of a version number. */ 580 sver = strchr (optarg, ':'); 581 if (sver == NULL) 582 len = strlen (optarg); 583 else 584 { 585 len = sver - optarg; 586 set_pep_name ("__major_subsystem_version__", 587 strtoul (sver + 1, &end, 0)); 588 if (*end == '.') 589 set_pep_name ("__minor_subsystem_version__", 590 strtoul (end + 1, &end, 0)); 591 if (*end != '\0') 592 einfo (_("%P: warning: bad version number in -subsystem option\n")); 593 } 594 595 /* Check for numeric subsystem. */ 596 temp_subsystem = strtoul (optarg, & end, 0); 597 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536)) 598 { 599 /* Search list for a numeric match to use its entry point. */ 600 for (i = 0; v[i].name; i++) 601 if (v[i].value == (int) temp_subsystem) 602 break; 603 604 /* Use this subsystem. */ 605 pep_subsystem = (int) temp_subsystem; 606 } 607 else 608 { 609 /* Search for subsystem by name. */ 610 for (i = 0; v[i].name; i++) 611 if (strncmp (optarg, v[i].name, len) == 0 612 && v[i].name[len] == '\0') 613 break; 614 615 if (v[i].name == NULL) 616 { 617 einfo (_("%P%F: invalid subsystem type %s\n"), optarg); 618 return; 619 } 620 621 pep_subsystem = v[i].value; 622 } 623 624 set_pep_name ("__subsystem__", pep_subsystem); 625 626 return; 627} 628 629 630static void 631set_pep_value (char *name) 632{ 633 char *end; 634 635 set_pep_name (name, (bfd_vma) strtoull (optarg, &end, 0)); 636 637 if (end == optarg) 638 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg); 639 640 optarg = end; 641} 642 643 644static void 645set_pep_stack_heap (char *resname, char *comname) 646{ 647 set_pep_value (resname); 648 649 if (*optarg == ',') 650 { 651 optarg++; 652 set_pep_value (comname); 653 } 654 else if (*optarg) 655 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg); 656} 657 658#define DEFAULT_BUILD_ID_STYLE "md5" 659 660static bfd_boolean 661gld${EMULATION_NAME}_handle_option (int optc) 662{ 663 is_underscoring (); 664 switch (optc) 665 { 666 default: 667 return FALSE; 668 669 case OPTION_BASE_FILE: 670 link_info.base_file = fopen (optarg, FOPEN_WB); 671 if (link_info.base_file == NULL) 672 einfo (_("%F%P: cannot open base file %s\n"), optarg); 673 break; 674 675 /* PE options. */ 676 case OPTION_HEAP: 677 set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); 678 break; 679 case OPTION_STACK: 680 set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); 681 break; 682 case OPTION_SUBSYSTEM: 683 set_pep_subsystem (); 684 break; 685 case OPTION_MAJOR_OS_VERSION: 686 set_pep_value ("__major_os_version__"); 687 break; 688 case OPTION_MINOR_OS_VERSION: 689 set_pep_value ("__minor_os_version__"); 690 break; 691 case OPTION_MAJOR_SUBSYSTEM_VERSION: 692 set_pep_value ("__major_subsystem_version__"); 693 break; 694 case OPTION_MINOR_SUBSYSTEM_VERSION: 695 set_pep_value ("__minor_subsystem_version__"); 696 break; 697 case OPTION_MAJOR_IMAGE_VERSION: 698 set_pep_value ("__major_image_version__"); 699 break; 700 case OPTION_MINOR_IMAGE_VERSION: 701 set_pep_value ("__minor_image_version__"); 702 break; 703 case OPTION_FILE_ALIGNMENT: 704 set_pep_value ("__file_alignment__"); 705 break; 706 case OPTION_SECTION_ALIGNMENT: 707 set_pep_value ("__section_alignment__"); 708 break; 709 case OPTION_DLL: 710 set_pep_name ("__dll__", 1); 711 break; 712 case OPTION_IMAGE_BASE: 713 set_pep_value ("__image_base__"); 714 break; 715 case OPTION_SUPPORT_OLD_CODE: 716 support_old_code = 1; 717 break; 718 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES: 719 pep_use_nul_prefixed_import_tables = TRUE; 720 break; 721 case OPTION_NO_LEADING_UNDERSCORE: 722 pep_leading_underscore = 0; 723 break; 724 case OPTION_LEADING_UNDERSCORE: 725 pep_leading_underscore = 1; 726 break; 727 case OPTION_INSERT_TIMESTAMP: 728 insert_timestamp = TRUE; 729 break; 730 case OPTION_NO_INSERT_TIMESTAMP: 731 insert_timestamp = FALSE; 732 break; 733#ifdef DLL_SUPPORT 734 case OPTION_OUT_DEF: 735 pep_out_def_filename = xstrdup (optarg); 736 break; 737 case OPTION_EXPORT_ALL: 738 pep_dll_export_everything = 1; 739 break; 740 case OPTION_EXCLUDE_SYMBOLS: 741 pep_dll_add_excludes (optarg, EXCLUDESYMS); 742 break; 743 case OPTION_EXCLUDE_ALL_SYMBOLS: 744 pep_dll_exclude_all_symbols = 1; 745 break; 746 case OPTION_EXCLUDE_LIBS: 747 pep_dll_add_excludes (optarg, EXCLUDELIBS); 748 break; 749 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB: 750 pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB); 751 break; 752 case OPTION_KILL_ATS: 753 pep_dll_kill_ats = 1; 754 break; 755 case OPTION_STDCALL_ALIASES: 756 pep_dll_stdcall_aliases = 1; 757 break; 758 case OPTION_ENABLE_STDCALL_FIXUP: 759 pep_enable_stdcall_fixup = 1; 760 break; 761 case OPTION_DISABLE_STDCALL_FIXUP: 762 pep_enable_stdcall_fixup = 0; 763 break; 764 case OPTION_IMPLIB_FILENAME: 765 pep_implib_filename = xstrdup (optarg); 766 break; 767 case OPTION_WARN_DUPLICATE_EXPORTS: 768 pep_dll_warn_dup_exports = 1; 769 break; 770 case OPTION_IMP_COMPAT: 771 pep_dll_compat_implib = 1; 772 break; 773 case OPTION_ENABLE_AUTO_IMAGE_BASE: 774 pep_enable_auto_image_base = 1; 775 break; 776 case OPTION_DISABLE_AUTO_IMAGE_BASE: 777 pep_enable_auto_image_base = 0; 778 break; 779 case OPTION_DLL_SEARCH_PREFIX: 780 pep_dll_search_prefix = xstrdup (optarg); 781 break; 782 case OPTION_NO_DEFAULT_EXCLUDES: 783 pep_dll_do_default_excludes = 0; 784 break; 785 case OPTION_DLL_ENABLE_AUTO_IMPORT: 786 link_info.pei386_auto_import = 1; 787 break; 788 case OPTION_DLL_DISABLE_AUTO_IMPORT: 789 link_info.pei386_auto_import = 0; 790 break; 791 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC: 792 link_info.pei386_runtime_pseudo_reloc = 2; 793 break; 794 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC: 795 link_info.pei386_runtime_pseudo_reloc = 0; 796 break; 797 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2: 798 link_info.pei386_runtime_pseudo_reloc = 2; 799 break; 800 case OPTION_ENABLE_EXTRA_PE_DEBUG: 801 pep_dll_extra_pe_debug = 1; 802 break; 803#endif 804 case OPTION_ENABLE_LONG_SECTION_NAMES: 805 pep_use_coff_long_section_names = 1; 806 break; 807 case OPTION_DISABLE_LONG_SECTION_NAMES: 808 pep_use_coff_long_section_names = 0; 809 break; 810 /* Get DLLCharacteristics bits */ 811 case OPTION_HIGH_ENTROPY_VA: 812 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA; 813 break; 814 case OPTION_DYNAMIC_BASE: 815 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE; 816 break; 817 case OPTION_FORCE_INTEGRITY: 818 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY; 819 break; 820 case OPTION_NX_COMPAT: 821 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT; 822 break; 823 case OPTION_NO_ISOLATION: 824 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION; 825 break; 826 case OPTION_NO_SEH: 827 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH; 828 break; 829 case OPTION_NO_BIND: 830 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND; 831 break; 832 case OPTION_WDM_DRIVER: 833 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER; 834 break; 835 case OPTION_TERMINAL_SERVER_AWARE: 836 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE; 837 break; 838 case OPTION_BUILD_ID: 839 if (emit_build_id != NULL) 840 { 841 free ((char *) emit_build_id); 842 emit_build_id = NULL; 843 } 844 if (optarg == NULL) 845 optarg = DEFAULT_BUILD_ID_STYLE; 846 if (strcmp (optarg, "none")) 847 emit_build_id = xstrdup (optarg); 848 break; 849 } 850 851 /* Set DLLCharacteristics bits */ 852 set_pep_name ("__dll_characteristics__", pe_dll_characteristics); 853 854 return TRUE; 855} 856 857 858#ifdef DLL_SUPPORT 859static unsigned long 860strhash (const char *str) 861{ 862 const unsigned char *s; 863 unsigned long hash; 864 unsigned int c; 865 unsigned int len; 866 867 hash = 0; 868 len = 0; 869 s = (const unsigned char *) str; 870 while ((c = *s++) != '\0') 871 { 872 hash += c + (c << 17); 873 hash ^= hash >> 2; 874 ++len; 875 } 876 hash += len + (len << 17); 877 hash ^= hash >> 2; 878 879 return hash; 880} 881 882/* Use the output file to create a image base for relocatable DLLs. */ 883 884static bfd_vma 885compute_dll_image_base (const char *ofile) 886{ 887 bfd_vma hash = (bfd_vma) strhash (ofile); 888 return NT_DLL_AUTO_IMAGE_BASE + ((hash << 16) & NT_DLL_AUTO_IMAGE_MASK); 889} 890#endif 891 892/* Assign values to the special symbols before the linker script is 893 read. */ 894 895static void 896gld_${EMULATION_NAME}_set_symbols (void) 897{ 898 /* Run through and invent symbols for all the 899 names and insert the defaults. */ 900 int j; 901 902 is_underscoring (); 903 904 if (!init[IMAGEBASEOFF].inited) 905 { 906 if (link_info.relocatable) 907 init[IMAGEBASEOFF].value = 0; 908 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie)) 909 { 910#ifdef DLL_SUPPORT 911 init[IMAGEBASEOFF].value = (pep_enable_auto_image_base 912 ? compute_dll_image_base (output_filename) 913 : NT_DLL_IMAGE_BASE); 914#else 915 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; 916#endif 917 } 918 else 919 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; 920 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value; 921 } 922 923 /* Don't do any symbol assignments if this is a relocatable link. */ 924 if (link_info.relocatable) 925 return; 926 927 /* Glue the assignments into the abs section. */ 928 push_stat_ptr (&abs_output_section->children); 929 930 for (j = 0; init[j].ptr; j++) 931 { 932 bfd_vma val = init[j].value; 933 lang_assignment_statement_type *rv; 934 935 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j), 936 exp_intop (val), FALSE)); 937 if (init[j].size == sizeof (short)) 938 *(short *) init[j].ptr = (short) val; 939 else if (init[j].size == sizeof (int)) 940 *(int *) init[j].ptr = (int) val; 941 else if (init[j].size == sizeof (long)) 942 *(long *) init[j].ptr = (long) val; 943 /* This might be a long long or other special type. */ 944 else if (init[j].size == sizeof (bfd_vma)) 945 *(bfd_vma *) init[j].ptr = val; 946 else abort (); 947 if (j == IMAGEBASEOFF) 948 image_base_statement = rv; 949 } 950 /* Restore the pointer. */ 951 pop_stat_ptr (); 952 953 if (pep.FileAlignment > pep.SectionAlignment) 954 { 955 einfo (_("%P: warning, file alignment > section alignment.\n")); 956 } 957} 958 959/* This is called after the linker script and the command line options 960 have been read. */ 961 962static void 963gld_${EMULATION_NAME}_after_parse (void) 964{ 965 /* PR ld/6744: Warn the user if they have used an ELF-only 966 option hoping it will work on PE+. */ 967 if (link_info.export_dynamic) 968 einfo (_("%P: warning: --export-dynamic is not supported for PE+ " 969 "targets, did you mean --export-all-symbols?\n")); 970 971 set_entry_point (); 972 973 after_parse_default (); 974} 975 976/* pep-dll.c directly accesses pep_data_import_dll, 977 so it must be defined outside of #ifdef DLL_SUPPORT. 978 Note - this variable is deliberately not initialised. 979 This allows it to be treated as a common varaible, and only 980 exist in one incarnation in a multiple target enabled linker. */ 981char * pep_data_import_dll; 982 983#ifdef DLL_SUPPORT 984static struct bfd_link_hash_entry *pep_undef_found_sym; 985 986static bfd_boolean 987pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf) 988{ 989 int sl; 990 char *string = inf; 991 const char *hs = h->root.string; 992 993 sl = strlen (string); 994 if (h->type == bfd_link_hash_defined 995 && ((*hs == '@' && *string == '_' 996 && strncmp (hs + 1, string + 1, sl - 1) == 0) 997 || strncmp (hs, string, sl) == 0) 998 && h->root.string[sl] == '@') 999 { 1000 pep_undef_found_sym = h; 1001 return FALSE; 1002 } 1003 return TRUE; 1004} 1005 1006static void 1007pep_fixup_stdcalls (void) 1008{ 1009 static int gave_warning_message = 0; 1010 struct bfd_link_hash_entry *undef, *sym; 1011 1012 if (pep_dll_extra_pe_debug) 1013 printf ("%s\n", __FUNCTION__); 1014 1015 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) 1016 if (undef->type == bfd_link_hash_undefined) 1017 { 1018 char* at = strchr (undef->root.string, '@'); 1019 int lead_at = (*undef->root.string == '@'); 1020 if (lead_at) 1021 at = strchr (undef->root.string + 1, '@'); 1022 if (at || lead_at) 1023 { 1024 /* The symbol is a stdcall symbol, so let's look for a 1025 cdecl symbol with the same name and resolve to that. */ 1026 char *cname = xstrdup (undef->root.string); 1027 1028 if (lead_at) 1029 *cname = '_'; 1030 at = strchr (cname, '@'); 1031 if (at) 1032 *at = 0; 1033 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1); 1034 1035 if (sym && sym->type == bfd_link_hash_defined) 1036 { 1037 undef->type = bfd_link_hash_defined; 1038 undef->u.def.value = sym->u.def.value; 1039 undef->u.def.section = sym->u.def.section; 1040 1041 if (pep_enable_stdcall_fixup == -1) 1042 { 1043 einfo (_("Warning: resolving %s by linking to %s\n"), 1044 undef->root.string, cname); 1045 if (! gave_warning_message) 1046 { 1047 gave_warning_message = 1; 1048 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); 1049 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); 1050 } 1051 } 1052 } 1053 } 1054 else 1055 { 1056 /* The symbol is a cdecl symbol, so we look for stdcall 1057 symbols - which means scanning the whole symbol table. */ 1058 pep_undef_found_sym = 0; 1059 bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match, 1060 (char *) undef->root.string); 1061 sym = pep_undef_found_sym; 1062 if (sym) 1063 { 1064 undef->type = bfd_link_hash_defined; 1065 undef->u.def.value = sym->u.def.value; 1066 undef->u.def.section = sym->u.def.section; 1067 1068 if (pep_enable_stdcall_fixup == -1) 1069 { 1070 einfo (_("Warning: resolving %s by linking to %s\n"), 1071 undef->root.string, sym->root.string); 1072 if (! gave_warning_message) 1073 { 1074 gave_warning_message = 1; 1075 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); 1076 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); 1077 } 1078 } 1079 } 1080 } 1081 } 1082} 1083 1084static int 1085make_import_fixup (arelent *rel, asection *s) 1086{ 1087 struct bfd_symbol *sym = *rel->sym_ptr_ptr; 1088 char addend[8]; 1089 bfd_vma _addend = 0; 1090 int suc = 0; 1091 1092 if (pep_dll_extra_pe_debug) 1093 printf ("arelent: %s@%#lx: add=%li\n", sym->name, 1094 (unsigned long) rel->address, (long) rel->addend); 1095 1096 memset (addend, 0, sizeof (addend)); 1097 switch ((rel->howto->bitsize)) 1098 { 1099 case 8: 1100 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1); 1101 if (suc && rel->howto->pc_relative) 1102 _addend = (bfd_vma) ((bfd_signed_vma) ((char) bfd_get_8 (s->owner, addend))); 1103 else if (suc) 1104 _addend = ((bfd_vma) bfd_get_8 (s->owner, addend)) & 0xff; 1105 break; 1106 case 16: 1107 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2); 1108 if (suc && rel->howto->pc_relative) 1109 _addend = (bfd_vma) ((bfd_signed_vma) ((short) bfd_get_16 (s->owner, addend))); 1110 else if (suc) 1111 _addend = ((bfd_vma) bfd_get_16 (s->owner, addend)) & 0xffff; 1112 break; 1113 case 32: 1114 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4); 1115 if (suc && rel->howto->pc_relative) 1116 _addend = (bfd_vma) ((bfd_signed_vma) ((int) bfd_get_32 (s->owner, addend))); 1117 else if (suc) 1118 _addend = ((bfd_vma) bfd_get_32 (s->owner, addend)) & 0xffffffff; 1119 break; 1120 case 64: 1121 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8); 1122 if (suc) 1123 _addend = ((bfd_vma) bfd_get_64 (s->owner, addend)); 1124 break; 1125 } 1126 if (! suc) 1127 einfo (_("%C: Cannot get section contents - auto-import exception\n"), 1128 s->owner, s, rel->address); 1129 1130 if (pep_dll_extra_pe_debug) 1131 { 1132 printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx", (long) _addend, (long) rel->addend, (long) rel->address); 1133 if (rel->howto->pc_relative) printf (" pcrel"); 1134 printf (" %d bit rel.\n",(int) rel->howto->bitsize); 1135 } 1136 pep_create_import_fixup (rel, s, _addend); 1137 1138 return 1; 1139} 1140 1141static void 1142pep_find_data_imports (void) 1143{ 1144 struct bfd_link_hash_entry *undef, *sym; 1145 1146 if (link_info.pei386_auto_import == 0) 1147 return; 1148 1149 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) 1150 { 1151 if (undef->type == bfd_link_hash_undefined) 1152 { 1153 /* C++ symbols are *long*. */ 1154 char buf[4096]; 1155 1156 if (pep_dll_extra_pe_debug) 1157 printf ("%s:%s\n", __FUNCTION__, undef->root.string); 1158 1159 sprintf (buf, "__imp_%s", undef->root.string); 1160 1161 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); 1162 1163 if (sym && sym->type == bfd_link_hash_defined) 1164 { 1165 bfd *b = sym->u.def.section->owner; 1166 asymbol **symbols; 1167 int nsyms, i; 1168 1169 if (!bfd_generic_link_read_symbols (b)) 1170 { 1171 einfo (_("%B%F: could not read symbols: %E\n"), b); 1172 return; 1173 } 1174 1175 symbols = bfd_get_outsymbols (b); 1176 nsyms = bfd_get_symcount (b); 1177 1178 for (i = 0; i < nsyms; i++) 1179 { 1180 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_"))) 1181 continue; 1182 1183 if (pep_dll_extra_pe_debug) 1184 printf ("->%s\n", symbols[i]->name); 1185 1186 pep_data_import_dll = (char*) (symbols[i]->name + 1187 U_SIZE ("_head_") - 1); 1188 break; 1189 } 1190 1191 pep_walk_relocs_of_symbol (&link_info, undef->root.string, 1192 make_import_fixup); 1193 1194 /* Let's differentiate it somehow from defined. */ 1195 undef->type = bfd_link_hash_defweak; 1196 /* We replace original name with __imp_ prefixed, this 1197 1) may trash memory 2) leads to duplicate symbol generation. 1198 Still, IMHO it's better than having name poluted. */ 1199 undef->root.string = sym->root.string; 1200 undef->u.def.value = sym->u.def.value; 1201 undef->u.def.section = sym->u.def.section; 1202 } 1203 } 1204 } 1205} 1206 1207static bfd_boolean 1208pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED) 1209{ 1210 printf ("+%s\n", h->string); 1211 1212 return TRUE; 1213} 1214#endif /* DLL_SUPPORT */ 1215 1216static void 1217debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj) 1218{ 1219 int *found = (int *) obj; 1220 1221 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0) 1222 *found = 1; 1223} 1224 1225static bfd_boolean 1226pecoff_checksum_contents (bfd *abfd, 1227 void (*process) (const void *, size_t, void *), 1228 void *arg) 1229{ 1230 file_ptr filepos = (file_ptr) 0; 1231 1232 while (1) 1233 { 1234 unsigned char b; 1235 int status; 1236 1237 if (bfd_seek (abfd, filepos, SEEK_SET) != 0) 1238 return 0; 1239 1240 status = bfd_bread (&b, (bfd_size_type) 1, abfd); 1241 if (status < 1) 1242 { 1243 break; 1244 } 1245 1246 (*process) (&b, 1, arg); 1247 filepos += 1; 1248 } 1249 1250 return TRUE; 1251} 1252 1253static bfd_boolean 1254write_build_id (bfd *abfd) 1255{ 1256 struct pe_tdata *t = pe_data (abfd); 1257 asection *asec; 1258 struct bfd_link_order *link_order = NULL; 1259 unsigned char *contents; 1260 bfd_size_type size; 1261 bfd_size_type build_id_size; 1262 unsigned char *build_id; 1263 1264 /* Find the section the .buildid output section has been merged info. */ 1265 for (asec = abfd->sections; asec != NULL; asec = asec->next) 1266 { 1267 struct bfd_link_order *l = NULL; 1268 for (l = asec->map_head.link_order; l != NULL; l = l->next) 1269 { 1270 if ((l->type == bfd_indirect_link_order)) 1271 { 1272 if (l->u.indirect.section == t->build_id.sec) 1273 { 1274 link_order = l; 1275 break; 1276 } 1277 } 1278 } 1279 1280 if (link_order) 1281 break; 1282 } 1283 1284 if (!link_order) 1285 { 1286 einfo (_("%P: warning: .buildid section discarded," 1287 " --build-id ignored.\n")); 1288 return TRUE; 1289 } 1290 1291 const char * pdb_name = _bfd_XXi_get_codeview_pdb_name (abfd); 1292 unsigned int pdb_name_length = strlen(pdb_name); 1293 1294 if (t->build_id.sec->contents == NULL) 1295 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); 1296 contents = t->build_id.sec->contents; 1297 size = t->build_id.sec->size; 1298 1299 build_id_size = compute_build_id_size (t->build_id.style); 1300 build_id = xmalloc (build_id_size); 1301 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size); 1302 1303 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase; 1304 1305 /* Construct a debug directory entry which points to an immediately following CodeView record. */ 1306 struct internal_IMAGE_DEBUG_DIRECTORY idd; 1307 idd.Characteristics = 0; 1308 idd.TimeDateStamp = 0; 1309 idd.MajorVersion = 0; 1310 idd.MinorVersion = 0; 1311 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW; 1312 idd.SizeOfData = sizeof (CV_INFO_PDB70) + pdb_name_length + 1; 1313 idd.AddressOfRawData = asec->vma - ib + link_order->offset 1314 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1315 idd.PointerToRawData = asec->filepos + link_order->offset 1316 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1317 1318 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents; 1319 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext); 1320 1321 /* Write the debug directory enttry */ 1322 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) 1323 return 0; 1324 1325 if ((bfd_bwrite (contents, size, abfd) != size)) 1326 return 0; 1327 1328 /* Construct the CodeView record. */ 1329 CODEVIEW_INFO cvinfo; 1330 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE; 1331 cvinfo.Age = 1; 1332 1333 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */ 1334 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH); 1335 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH) 1336 ? CV_INFO_SIGNATURE_LENGTH : build_id_size); 1337 1338 free (build_id); 1339 1340 /* Write the codeview record. */ 1341 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0) 1342 return 0; 1343 1344 /* Record the location of the debug directory in the data directory. */ 1345 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress 1346 = asec->vma - ib + link_order->offset; 1347 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size 1348 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1349 1350 return TRUE; 1351} 1352 1353/* Make .buildid section, and set up coff_tdata->build_id. */ 1354static bfd_boolean 1355setup_build_id (bfd *ibfd) 1356{ 1357 asection *s; 1358 flagword flags; 1359 1360 if (!validate_build_id_style (emit_build_id)) 1361 { 1362 einfo ("%P: warning: unrecognized --build-id style ignored.\n"); 1363 return FALSE; 1364 } 1365 1366 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY 1367 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA); 1368 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags); 1369 if (s != NULL) 1370 { 1371 struct pe_tdata *t = pe_data (link_info.output_bfd); 1372 t->build_id.after_write_object_contents = &write_build_id; 1373 t->build_id.style = emit_build_id; 1374 t->build_id.sec = s; 1375 1376 /* Section is a variable size: 1377 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW, 1378 pointing at a CV_INFO_PDB70 record containing the build-id, with a 1379 null terminated string for PdbFileName. */ 1380 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY) 1381 + sizeof (CV_INFO_PDB70) + strlen(_bfd_XXi_get_codeview_pdb_name(link_info.output_bfd)) + 1; 1382 1383 return TRUE; 1384 } 1385 1386 einfo ("%P: warning: Cannot create .buildid section," 1387 " --build-id ignored.\n"); 1388 return FALSE; 1389} 1390 1391static void 1392gld_${EMULATION_NAME}_after_open (void) 1393{ 1394 after_open_default (); 1395 1396 is_underscoring (); 1397#ifdef DLL_SUPPORT 1398 if (pep_dll_extra_pe_debug) 1399 { 1400 bfd *a; 1401 struct bfd_link_hash_entry *sym; 1402 1403 printf ("%s()\n", __FUNCTION__); 1404 1405 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) 1406 printf ("-%s\n", sym->root.string); 1407 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); 1408 1409 for (a = link_info.input_bfds; a; a = a->link.next) 1410 printf ("*%s\n",a->filename); 1411 } 1412#endif 1413 1414 if (emit_build_id != NULL) 1415 { 1416 bfd *abfd; 1417 1418 /* Find a COFF input. */ 1419 for (abfd = link_info.input_bfds; 1420 abfd != (bfd *) NULL; abfd = abfd->link.next) 1421 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) 1422 break; 1423 1424 /* If there are no COFF input files do not try to 1425 add a build-id section. */ 1426 if (abfd == NULL 1427 || !setup_build_id (abfd)) 1428 { 1429 free ((char *) emit_build_id); 1430 emit_build_id = NULL; 1431 } 1432 } 1433 1434 /* Pass the wacky PE command line options into the output bfd. 1435 FIXME: This should be done via a function, rather than by 1436 including an internal BFD header. */ 1437 1438 if (coff_data (link_info.output_bfd) == NULL 1439 || coff_data (link_info.output_bfd)->pe == 0) 1440 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), 1441 link_info.output_bfd); 1442 1443 pe_data (link_info.output_bfd)->pe_opthdr = pep; 1444 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value; 1445 pe_data (link_info.output_bfd)->real_flags |= real_flags; 1446 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp; 1447 1448 /* At this point we must decide whether to use long section names 1449 in the output or not. If the user hasn't explicitly specified 1450 on the command line, we leave it to the default for the format 1451 (object files yes, image files no), except if there is debug 1452 information present; GDB relies on the long section names to 1453 find it, so enable it in that case. */ 1454 if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none) 1455 { 1456 if (link_info.relocatable) 1457 pep_use_coff_long_section_names = 1; 1458 else 1459 { 1460 /* Iterate over all sections of all input BFDs, checking 1461 for any that begin 'debug_' and are long names. */ 1462 LANG_FOR_EACH_INPUT_STATEMENT (is) 1463 { 1464 int found_debug = 0; 1465 1466 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug); 1467 if (found_debug) 1468 { 1469 pep_use_coff_long_section_names = 1; 1470 break; 1471 } 1472 } 1473 } 1474 } 1475 1476 pep_output_file_set_long_section_names (link_info.output_bfd); 1477 1478#ifdef DLL_SUPPORT 1479 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1480 pep_fixup_stdcalls (); 1481 1482 pep_process_import_defs (link_info.output_bfd, &link_info); 1483 1484 pep_find_data_imports (); 1485 1486 /* As possibly new symbols are added by imports, we rerun 1487 stdcall/fastcall fixup here. */ 1488 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1489 pep_fixup_stdcalls (); 1490 1491#ifndef TARGET_IS_i386pep 1492 if (link_info.shared) 1493#else 1494 if (!link_info.relocatable) 1495#endif 1496 pep_dll_build_sections (link_info.output_bfd, &link_info); 1497 1498#ifndef TARGET_IS_i386pep 1499 else 1500 pep_exe_build_sections (link_info.output_bfd, &link_info); 1501#endif 1502#endif /* DLL_SUPPORT */ 1503 1504 { 1505 /* This next chunk of code tries to detect the case where you have 1506 two import libraries for the same DLL (specifically, 1507 symbolically linking libm.a and libc.a in cygwin to 1508 libcygwin.a). In those cases, it's possible for function 1509 thunks from the second implib to be used but without the 1510 head/tail objects, causing an improper import table. We detect 1511 those cases and rename the "other" import libraries to match 1512 the one the head/tail come from, so that the linker will sort 1513 things nicely and produce a valid import table. */ 1514 1515 LANG_FOR_EACH_INPUT_STATEMENT (is) 1516 { 1517 if (is->the_bfd->my_archive) 1518 { 1519 int idata2 = 0, reloc_count=0, is_imp = 0; 1520 asection *sec; 1521 1522 /* See if this is an import library thunk. */ 1523 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1524 { 1525 if (strcmp (sec->name, ".idata\$2") == 0) 1526 idata2 = 1; 1527 if (CONST_STRNEQ (sec->name, ".idata\$")) 1528 is_imp = 1; 1529 reloc_count += sec->reloc_count; 1530 } 1531 1532 if (is_imp && !idata2 && reloc_count) 1533 { 1534 /* It is, look for the reference to head and see if it's 1535 from our own library. */ 1536 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1537 { 1538 int i; 1539 long relsize; 1540 asymbol **symbols; 1541 arelent **relocs; 1542 int nrelocs; 1543 1544 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); 1545 if (relsize < 1) 1546 break; 1547 1548 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1549 { 1550 einfo (_("%B%F: could not read symbols: %E\n"), 1551 is->the_bfd); 1552 return; 1553 } 1554 symbols = bfd_get_outsymbols (is->the_bfd); 1555 1556 relocs = xmalloc ((size_t) relsize); 1557 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, 1558 relocs, symbols); 1559 if (nrelocs < 0) 1560 { 1561 free (relocs); 1562 einfo ("%X%P: unable to process relocs: %E\n"); 1563 return; 1564 } 1565 1566 for (i = 0; i < nrelocs; i++) 1567 { 1568 struct bfd_symbol *s; 1569 struct bfd_link_hash_entry * blhe; 1570 char *other_bfd_filename; 1571 char *n; 1572 1573 s = (relocs[i]->sym_ptr_ptr)[0]; 1574 1575 if (s->flags & BSF_LOCAL) 1576 continue; 1577 1578 /* Thunk section with reloc to another bfd. */ 1579 blhe = bfd_link_hash_lookup (link_info.hash, 1580 s->name, 1581 FALSE, FALSE, TRUE); 1582 1583 if (blhe == NULL 1584 || blhe->type != bfd_link_hash_defined) 1585 continue; 1586 1587 other_bfd_filename 1588 = blhe->u.def.section->owner->my_archive 1589 ? bfd_get_filename (blhe->u.def.section->owner->my_archive) 1590 : bfd_get_filename (blhe->u.def.section->owner); 1591 1592 if (filename_cmp (bfd_get_filename 1593 (is->the_bfd->my_archive), 1594 other_bfd_filename) == 0) 1595 continue; 1596 1597 /* Rename this implib to match the other one. */ 1598 n = xmalloc (strlen (other_bfd_filename) + 1); 1599 strcpy (n, other_bfd_filename); 1600 is->the_bfd->my_archive->filename = n; 1601 } 1602 1603 free (relocs); 1604 /* Note - we do not free the symbols, 1605 they are now cached in the BFD. */ 1606 } 1607 } 1608 } 1609 } 1610 } 1611 1612 { 1613 int is_ms_arch = 0; 1614 bfd *cur_arch = 0; 1615 lang_input_statement_type *is2; 1616 lang_input_statement_type *is3; 1617 1618 /* Careful - this is a shell script. Watch those dollar signs! */ 1619 /* Microsoft import libraries have every member named the same, 1620 and not in the right order for us to link them correctly. We 1621 must detect these and rename the members so that they'll link 1622 correctly. There are three types of objects: the head, the 1623 thunks, and the sentinel(s). The head is easy; it's the one 1624 with idata2. We assume that the sentinels won't have relocs, 1625 and the thunks will. It's easier than checking the symbol 1626 table for external references. */ 1627 LANG_FOR_EACH_INPUT_STATEMENT (is) 1628 { 1629 if (is->the_bfd->my_archive) 1630 { 1631 char *pnt; 1632 bfd *arch = is->the_bfd->my_archive; 1633 1634 if (cur_arch != arch) 1635 { 1636 cur_arch = arch; 1637 is_ms_arch = 1; 1638 1639 for (is3 = is; 1640 is3 && is3->the_bfd->my_archive == arch; 1641 is3 = (lang_input_statement_type *) is3->next) 1642 { 1643 /* A MS dynamic import library can also contain static 1644 members, so look for the first element with a .dll 1645 extension, and use that for the remainder of the 1646 comparisons. */ 1647 pnt = strrchr (is3->the_bfd->filename, '.'); 1648 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0) 1649 break; 1650 } 1651 1652 if (is3 == NULL) 1653 is_ms_arch = 0; 1654 else 1655 { 1656 /* OK, found one. Now look to see if the remaining 1657 (dynamic import) members use the same name. */ 1658 for (is2 = is; 1659 is2 && is2->the_bfd->my_archive == arch; 1660 is2 = (lang_input_statement_type *) is2->next) 1661 { 1662 /* Skip static members, ie anything with a .obj 1663 extension. */ 1664 pnt = strrchr (is2->the_bfd->filename, '.'); 1665 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0) 1666 continue; 1667 1668 if (filename_cmp (is3->the_bfd->filename, 1669 is2->the_bfd->filename)) 1670 { 1671 is_ms_arch = 0; 1672 break; 1673 } 1674 } 1675 } 1676 } 1677 1678 /* This fragment might have come from an .obj file in a Microsoft 1679 import, and not an actual import record. If this is the case, 1680 then leave the filename alone. */ 1681 pnt = strrchr (is->the_bfd->filename, '.'); 1682 1683 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0)) 1684 { 1685 int idata2 = 0, reloc_count=0; 1686 asection *sec; 1687 char *new_name, seq; 1688 1689 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1690 { 1691 if (strcmp (sec->name, ".idata\$2") == 0) 1692 idata2 = 1; 1693 reloc_count += sec->reloc_count; 1694 } 1695 1696 if (idata2) /* .idata2 is the TOC */ 1697 seq = 'a'; 1698 else if (reloc_count > 0) /* thunks */ 1699 seq = 'b'; 1700 else /* sentinel */ 1701 seq = 'c'; 1702 1703 new_name = xmalloc (strlen (is->the_bfd->filename) + 3); 1704 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); 1705 is->the_bfd->filename = new_name; 1706 1707 new_name = xmalloc (strlen (is->filename) + 3); 1708 sprintf (new_name, "%s.%c", is->filename, seq); 1709 is->filename = new_name; 1710 } 1711 } 1712 } 1713 } 1714} 1715 1716static void 1717gld_${EMULATION_NAME}_before_allocation (void) 1718{ 1719 is_underscoring (); 1720 before_allocation_default (); 1721} 1722 1723#ifdef DLL_SUPPORT 1724/* This is called when an input file isn't recognized as a BFD. We 1725 check here for .DEF files and pull them in automatically. */ 1726 1727static int 1728saw_option (char *option) 1729{ 1730 int i; 1731 1732 is_underscoring (); 1733 1734 for (i = 0; init[i].ptr; i++) 1735 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0) 1736 return init[i].inited; 1737 return 0; 1738} 1739#endif /* DLL_SUPPORT */ 1740 1741static bfd_boolean 1742gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1743{ 1744#ifdef DLL_SUPPORT 1745 const char *ext = entry->filename + strlen (entry->filename) - 4; 1746 1747 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0) 1748 { 1749 pep_def_file = def_file_parse (entry->filename, pep_def_file); 1750 1751 if (pep_def_file) 1752 { 1753 int i, buflen=0, len; 1754 char *buf; 1755 1756 for (i = 0; i < pep_def_file->num_exports; i++) 1757 { 1758 len = strlen (pep_def_file->exports[i].internal_name); 1759 if (buflen < len + 2) 1760 buflen = len + 2; 1761 } 1762 1763 buf = xmalloc (buflen); 1764 1765 for (i = 0; i < pep_def_file->num_exports; i++) 1766 { 1767 struct bfd_link_hash_entry *h; 1768 1769 sprintf (buf, "%s%s", U (""), 1770 pep_def_file->exports[i].internal_name); 1771 1772 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); 1773 if (h == (struct bfd_link_hash_entry *) NULL) 1774 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); 1775 if (h->type == bfd_link_hash_new) 1776 { 1777 h->type = bfd_link_hash_undefined; 1778 h->u.undef.abfd = NULL; 1779 bfd_link_add_undef (link_info.hash, h); 1780 } 1781 } 1782 free (buf); 1783 1784 /* def_file_print (stdout, pep_def_file); */ 1785 if (pep_def_file->is_dll == 1) 1786 link_info.shared = 1; 1787 1788 if (pep_def_file->base_address != (bfd_vma)(-1)) 1789 { 1790 pep.ImageBase 1791 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase 1792 = init[IMAGEBASEOFF].value 1793 = pep_def_file->base_address; 1794 init[IMAGEBASEOFF].inited = 1; 1795 if (image_base_statement) 1796 image_base_statement->exp 1797 = exp_assign ("__image_base__", exp_intop (pep.ImageBase), 1798 FALSE); 1799 } 1800 1801 if (pep_def_file->stack_reserve != -1 1802 && ! saw_option ("__size_of_stack_reserve__")) 1803 { 1804 pep.SizeOfStackReserve = pep_def_file->stack_reserve; 1805 if (pep_def_file->stack_commit != -1) 1806 pep.SizeOfStackCommit = pep_def_file->stack_commit; 1807 } 1808 if (pep_def_file->heap_reserve != -1 1809 && ! saw_option ("__size_of_heap_reserve__")) 1810 { 1811 pep.SizeOfHeapReserve = pep_def_file->heap_reserve; 1812 if (pep_def_file->heap_commit != -1) 1813 pep.SizeOfHeapCommit = pep_def_file->heap_commit; 1814 } 1815 return TRUE; 1816 } 1817 } 1818#endif 1819 return FALSE; 1820} 1821 1822static bfd_boolean 1823gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1824{ 1825 is_underscoring (); 1826#ifdef DLL_SUPPORT 1827#ifdef TARGET_IS_i386pep 1828 pep_dll_id_target ("pei-x86-64"); 1829#endif 1830 if (pep_bfd_is_dll (entry->the_bfd)) 1831 return pep_implied_import_dll (entry->filename); 1832#endif 1833 return FALSE; 1834} 1835 1836static void 1837gld_${EMULATION_NAME}_finish (void) 1838{ 1839 is_underscoring (); 1840 finish_default (); 1841 1842#ifdef DLL_SUPPORT 1843 if (link_info.shared 1844 || (!link_info.relocatable && pep_def_file->num_exports != 0)) 1845 { 1846 pep_dll_fill_sections (link_info.output_bfd, &link_info); 1847 if (pep_implib_filename) 1848 pep_dll_generate_implib (pep_def_file, pep_implib_filename, &link_info); 1849 } 1850 1851 if (pep_out_def_filename) 1852 pep_dll_generate_def_file (pep_out_def_filename); 1853#endif /* DLL_SUPPORT */ 1854 1855 /* I don't know where .idata gets set as code, but it shouldn't be. */ 1856 { 1857 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata"); 1858 1859 if (asec) 1860 { 1861 asec->flags &= ~SEC_CODE; 1862 asec->flags |= SEC_DATA; 1863 } 1864 } 1865} 1866 1867 1868/* Place an orphan section. 1869 1870 We use this to put sections in a reasonable place in the file, and 1871 to ensure that they are aligned as required. 1872 1873 We handle grouped sections here as well. A section named .foo\$nn 1874 goes into the output section .foo. All grouped sections are sorted 1875 by name. 1876 1877 Grouped sections for the default sections are handled by the 1878 default linker script using wildcards, and are sorted by 1879 sort_sections. */ 1880 1881static lang_output_section_statement_type * 1882gld_${EMULATION_NAME}_place_orphan (asection *s, 1883 const char *secname, 1884 int constraint) 1885{ 1886 const char *orig_secname = secname; 1887 char *dollar = NULL; 1888 lang_output_section_statement_type *os; 1889 lang_statement_list_type add_child; 1890 lang_output_section_statement_type *match_by_name = NULL; 1891 lang_statement_union_type **pl; 1892 1893 /* Look through the script to see where to place this section. */ 1894 if (!link_info.relocatable 1895 && (dollar = strchr (secname, '\$')) != NULL) 1896 { 1897 size_t len = dollar - secname; 1898 char *newname = xmalloc (len + 1); 1899 memcpy (newname, secname, len); 1900 newname[len] = '\0'; 1901 secname = newname; 1902 } 1903 1904 lang_list_init (&add_child); 1905 1906 os = NULL; 1907 if (constraint == 0) 1908 for (os = lang_output_section_find (secname); 1909 os != NULL; 1910 os = next_matching_output_section_statement (os, 0)) 1911 { 1912 /* If we don't match an existing output section, tell 1913 lang_insert_orphan to create a new output section. */ 1914 constraint = SPECIAL; 1915 1916 if (os->bfd_section != NULL 1917 && (os->bfd_section->flags == 0 1918 || ((s->flags ^ os->bfd_section->flags) 1919 & (SEC_LOAD | SEC_ALLOC)) == 0)) 1920 { 1921 /* We already have an output section statement with this 1922 name, and its bfd section has compatible flags. 1923 If the section already exists but does not have any flags set, 1924 then it has been created by the linker, probably as a result of 1925 a --section-start command line switch. */ 1926 lang_add_section (&add_child, s, NULL, os); 1927 break; 1928 } 1929 1930 /* Save unused output sections in case we can match them 1931 against orphans later. */ 1932 if (os->bfd_section == NULL) 1933 match_by_name = os; 1934 } 1935 1936 /* If we didn't match an active output section, see if we matched an 1937 unused one and use that. */ 1938 if (os == NULL && match_by_name) 1939 { 1940 lang_add_section (&match_by_name->children, s, NULL, match_by_name); 1941 return match_by_name; 1942 } 1943 1944 if (os == NULL) 1945 { 1946 static struct orphan_save hold[] = 1947 { 1948 { ".text", 1949 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, 1950 0, 0, 0, 0 }, 1951 { ".idata", 1952 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 1953 0, 0, 0, 0 }, 1954 { ".rdata", 1955 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 1956 0, 0, 0, 0 }, 1957 { ".data", 1958 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, 1959 0, 0, 0, 0 }, 1960 { ".bss", 1961 SEC_ALLOC, 1962 0, 0, 0, 0 } 1963 }; 1964 enum orphan_save_index 1965 { 1966 orphan_text = 0, 1967 orphan_idata, 1968 orphan_rodata, 1969 orphan_data, 1970 orphan_bss 1971 }; 1972 static int orphan_init_done = 0; 1973 struct orphan_save *place; 1974 lang_output_section_statement_type *after; 1975 etree_type *address; 1976 1977 if (!orphan_init_done) 1978 { 1979 struct orphan_save *ho; 1980 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) 1981 if (ho->name != NULL) 1982 { 1983 ho->os = lang_output_section_find (ho->name); 1984 if (ho->os != NULL && ho->os->flags == 0) 1985 ho->os->flags = ho->flags; 1986 } 1987 orphan_init_done = 1; 1988 } 1989 1990 /* Try to put the new output section in a reasonable place based 1991 on the section name and section flags. */ 1992 1993 place = NULL; 1994 if ((s->flags & SEC_ALLOC) == 0) 1995 ; 1996 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 1997 place = &hold[orphan_bss]; 1998 else if ((s->flags & SEC_READONLY) == 0) 1999 place = &hold[orphan_data]; 2000 else if ((s->flags & SEC_CODE) == 0) 2001 { 2002 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata] 2003 : &hold[orphan_rodata]); 2004 } 2005 else 2006 place = &hold[orphan_text]; 2007 2008 after = NULL; 2009 if (place != NULL) 2010 { 2011 if (place->os == NULL) 2012 place->os = lang_output_section_find (place->name); 2013 after = place->os; 2014 if (after == NULL) 2015 after = lang_output_section_find_by_flags (s, &place->os, NULL); 2016 if (after == NULL) 2017 /* *ABS* is always the first output section statement. */ 2018 after = (&lang_output_section_statement.head 2019 ->output_section_statement); 2020 } 2021 2022 /* All sections in an executable must be aligned to a page boundary. 2023 In a relocatable link, just preserve the incoming alignment; the 2024 address is discarded by lang_insert_orphan in that case, anyway. */ 2025 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); 2026 os = lang_insert_orphan (s, secname, constraint, after, place, address, 2027 &add_child); 2028 if (link_info.relocatable) 2029 { 2030 os->section_alignment = s->alignment_power; 2031 os->bfd_section->alignment_power = s->alignment_power; 2032 } 2033 } 2034 2035 /* If the section name has a '\$', sort it with the other '\$' 2036 sections. */ 2037 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next) 2038 { 2039 lang_input_section_type *ls; 2040 const char *lname; 2041 2042 if ((*pl)->header.type != lang_input_section_enum) 2043 continue; 2044 2045 ls = &(*pl)->input_section; 2046 2047 lname = bfd_get_section_name (ls->section->owner, ls->section); 2048 if (strchr (lname, '\$') != NULL 2049 && (dollar == NULL || strcmp (orig_secname, lname) < 0)) 2050 break; 2051 } 2052 2053 if (add_child.head != NULL) 2054 { 2055 *add_child.tail = *pl; 2056 *pl = add_child.head; 2057 } 2058 2059 return os; 2060} 2061 2062static bfd_boolean 2063gld_${EMULATION_NAME}_open_dynamic_archive 2064 (const char *arch ATTRIBUTE_UNUSED, 2065 search_dirs_type *search, 2066 lang_input_statement_type *entry) 2067{ 2068 static const struct 2069 { 2070 const char * format; 2071 bfd_boolean use_prefix; 2072 } 2073 libname_fmt [] = 2074 { 2075 /* Preferred explicit import library for dll's. */ 2076 { "lib%s.dll.a", FALSE }, 2077 /* Alternate explicit import library for dll's. */ 2078 { "%s.dll.a", FALSE }, 2079 /* "libfoo.a" could be either an import lib or a static lib. 2080 For backwards compatibility, libfoo.a needs to precede 2081 libfoo.dll and foo.dll in the search. */ 2082 { "lib%s.a", FALSE }, 2083 /* The 'native' spelling of an import lib name is "foo.lib". */ 2084 { "%s.lib", FALSE }, 2085#ifdef DLL_SUPPORT 2086 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ 2087 { "%s%s.dll", TRUE }, 2088#endif 2089 /* Try "libfoo.dll" (default preferred dll name). */ 2090 { "lib%s.dll", FALSE }, 2091 /* Finally try 'native' dll name "foo.dll". */ 2092 { "%s.dll", FALSE }, 2093 /* Note: If adding more formats to this table, make sure to check to 2094 see if their length is longer than libname_fmt[0].format, and if 2095 so, update the call to xmalloc() below. */ 2096 { NULL, FALSE } 2097 }; 2098 static unsigned int format_max_len = 0; 2099 const char * filename; 2100 char * full_string; 2101 char * base_string; 2102 unsigned int i; 2103 2104 2105 if (! entry->flags.maybe_archive || entry->flags.full_name_provided) 2106 return FALSE; 2107 2108 filename = entry->filename; 2109 2110 if (format_max_len == 0) 2111 /* We need to allow space in the memory that we are going to allocate 2112 for the characters in the format string. Since the format array is 2113 static we only need to calculate this information once. In theory 2114 this value could also be computed statically, but this introduces 2115 the possibility for a discrepancy and hence a possible memory 2116 corruption. The lengths we compute here will be too long because 2117 they will include any formating characters (%s) in the strings, but 2118 this will not matter. */ 2119 for (i = 0; libname_fmt[i].format; i++) 2120 if (format_max_len < strlen (libname_fmt[i].format)) 2121 format_max_len = strlen (libname_fmt[i].format); 2122 2123 full_string = xmalloc (strlen (search->name) 2124 + strlen (filename) 2125 + format_max_len 2126#ifdef DLL_SUPPORT 2127 + (pep_dll_search_prefix 2128 ? strlen (pep_dll_search_prefix) : 0) 2129#endif 2130 /* Allow for the terminating NUL and for the path 2131 separator character that is inserted between 2132 search->name and the start of the format string. */ 2133 + 2); 2134 2135 sprintf (full_string, "%s/", search->name); 2136 base_string = full_string + strlen (full_string); 2137 2138 for (i = 0; libname_fmt[i].format; i++) 2139 { 2140#ifdef DLL_SUPPORT 2141 if (libname_fmt[i].use_prefix) 2142 { 2143 if (!pep_dll_search_prefix) 2144 continue; 2145 sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename); 2146 } 2147 else 2148#endif 2149 sprintf (base_string, libname_fmt[i].format, filename); 2150 2151 if (ldfile_try_open_bfd (full_string, entry)) 2152 break; 2153 } 2154 2155 if (!libname_fmt[i].format) 2156 { 2157 free (full_string); 2158 return FALSE; 2159 } 2160 2161 entry->filename = full_string; 2162 2163 return TRUE; 2164} 2165 2166static int 2167gld_${EMULATION_NAME}_find_potential_libraries 2168 (char *name, lang_input_statement_type *entry) 2169{ 2170 return ldfile_open_file_search (name, entry, "", ".lib"); 2171} 2172 2173static char * 2174gld_${EMULATION_NAME}_get_script (int *isfile) 2175EOF 2176# Scripts compiled in. 2177# sed commands to quote an ld script as a C string. 2178sc="-f stringify.sed" 2179 2180fragment <<EOF 2181{ 2182 *isfile = 0; 2183 2184 if (link_info.relocatable && config.build_constructors) 2185 return 2186EOF 2187sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 2188echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c 2189sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 2190echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 2191sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 2192echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 2193sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 2194if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then 2195echo ' ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return' >> e${EMULATION_NAME}.c 2196sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c 2197fi 2198echo ' ; else return' >> e${EMULATION_NAME}.c 2199sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 2200echo '; }' >> e${EMULATION_NAME}.c 2201 2202fragment <<EOF 2203 2204 2205struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 2206{ 2207 gld_${EMULATION_NAME}_before_parse, 2208 syslib_default, 2209 hll_default, 2210 gld_${EMULATION_NAME}_after_parse, 2211 gld_${EMULATION_NAME}_after_open, 2212 after_allocation_default, 2213 set_output_arch_default, 2214 ldemul_default_target, 2215 gld_${EMULATION_NAME}_before_allocation, 2216 gld_${EMULATION_NAME}_get_script, 2217 "${EMULATION_NAME}", 2218 "${OUTPUT_FORMAT}", 2219 gld_${EMULATION_NAME}_finish, 2220 NULL, /* Create output section statements. */ 2221 gld_${EMULATION_NAME}_open_dynamic_archive, 2222 gld_${EMULATION_NAME}_place_orphan, 2223 gld_${EMULATION_NAME}_set_symbols, 2224 NULL, /* parse_args */ 2225 gld${EMULATION_NAME}_add_options, 2226 gld${EMULATION_NAME}_handle_option, 2227 gld_${EMULATION_NAME}_unrecognized_file, 2228 gld_${EMULATION_NAME}_list_options, 2229 gld_${EMULATION_NAME}_recognized_file, 2230 gld_${EMULATION_NAME}_find_potential_libraries, 2231 NULL, /* new_vers_pattern. */ 2232 NULL /* extra_map_file_text */ 2233}; 2234EOF 2235