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 if (t->build_id.sec->contents == NULL) 1292 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); 1293 contents = t->build_id.sec->contents; 1294 size = t->build_id.sec->size; 1295 1296 build_id_size = compute_build_id_size (t->build_id.style); 1297 build_id = xmalloc (build_id_size); 1298 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size); 1299 1300 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase; 1301 1302 /* Construct a debug directory entry which points to an immediately following CodeView record. */ 1303 struct internal_IMAGE_DEBUG_DIRECTORY idd; 1304 idd.Characteristics = 0; 1305 idd.TimeDateStamp = 0; 1306 idd.MajorVersion = 0; 1307 idd.MinorVersion = 0; 1308 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW; 1309 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1; 1310 idd.AddressOfRawData = asec->vma - ib + link_order->offset 1311 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1312 idd.PointerToRawData = asec->filepos + link_order->offset 1313 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1314 1315 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents; 1316 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext); 1317 1318 /* Write the debug directory enttry */ 1319 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) 1320 return 0; 1321 1322 if ((bfd_bwrite (contents, size, abfd) != size)) 1323 return 0; 1324 1325 /* Construct the CodeView record. */ 1326 CODEVIEW_INFO cvinfo; 1327 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE; 1328 cvinfo.Age = 1; 1329 1330 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */ 1331 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH); 1332 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH) 1333 ? CV_INFO_SIGNATURE_LENGTH : build_id_size); 1334 1335 free (build_id); 1336 1337 /* Write the codeview record. */ 1338 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0) 1339 return 0; 1340 1341 /* Record the location of the debug directory in the data directory. */ 1342 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress 1343 = asec->vma - ib + link_order->offset; 1344 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size 1345 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1346 1347 return TRUE; 1348} 1349 1350/* Make .buildid section, and set up coff_tdata->build_id. */ 1351static bfd_boolean 1352setup_build_id (bfd *ibfd) 1353{ 1354 asection *s; 1355 flagword flags; 1356 1357 if (!validate_build_id_style (emit_build_id)) 1358 { 1359 einfo ("%P: warning: unrecognized --build-id style ignored.\n"); 1360 return FALSE; 1361 } 1362 1363 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY 1364 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA); 1365 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags); 1366 if (s != NULL) 1367 { 1368 struct pe_tdata *t = pe_data (link_info.output_bfd); 1369 t->build_id.after_write_object_contents = &write_build_id; 1370 t->build_id.style = emit_build_id; 1371 t->build_id.sec = s; 1372 1373 /* Section is a fixed size: 1374 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW, 1375 pointing at a CV_INFO_PDB70 record containing the build-id, with a 1376 null byte for PdbFileName. */ 1377 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY) 1378 + sizeof (CV_INFO_PDB70) + 1; 1379 1380 return TRUE; 1381 } 1382 1383 einfo ("%P: warning: Cannot create .buildid section," 1384 " --build-id ignored.\n"); 1385 return FALSE; 1386} 1387 1388static void 1389gld_${EMULATION_NAME}_after_open (void) 1390{ 1391 after_open_default (); 1392 1393 is_underscoring (); 1394#ifdef DLL_SUPPORT 1395 if (pep_dll_extra_pe_debug) 1396 { 1397 bfd *a; 1398 struct bfd_link_hash_entry *sym; 1399 1400 printf ("%s()\n", __FUNCTION__); 1401 1402 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) 1403 printf ("-%s\n", sym->root.string); 1404 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); 1405 1406 for (a = link_info.input_bfds; a; a = a->link.next) 1407 printf ("*%s\n",a->filename); 1408 } 1409#endif 1410 1411 if (emit_build_id != NULL) 1412 { 1413 bfd *abfd; 1414 1415 /* Find a COFF input. */ 1416 for (abfd = link_info.input_bfds; 1417 abfd != (bfd *) NULL; abfd = abfd->link.next) 1418 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) 1419 break; 1420 1421 /* If there are no COFF input files do not try to 1422 add a build-id section. */ 1423 if (abfd == NULL 1424 || !setup_build_id (abfd)) 1425 { 1426 free ((char *) emit_build_id); 1427 emit_build_id = NULL; 1428 } 1429 } 1430 1431 /* Pass the wacky PE command line options into the output bfd. 1432 FIXME: This should be done via a function, rather than by 1433 including an internal BFD header. */ 1434 1435 if (coff_data (link_info.output_bfd) == NULL 1436 || coff_data (link_info.output_bfd)->pe == 0) 1437 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), 1438 link_info.output_bfd); 1439 1440 pe_data (link_info.output_bfd)->pe_opthdr = pep; 1441 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value; 1442 pe_data (link_info.output_bfd)->real_flags |= real_flags; 1443 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp; 1444 1445 /* At this point we must decide whether to use long section names 1446 in the output or not. If the user hasn't explicitly specified 1447 on the command line, we leave it to the default for the format 1448 (object files yes, image files no), except if there is debug 1449 information present; GDB relies on the long section names to 1450 find it, so enable it in that case. */ 1451 if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none) 1452 { 1453 if (link_info.relocatable) 1454 pep_use_coff_long_section_names = 1; 1455 else 1456 { 1457 /* Iterate over all sections of all input BFDs, checking 1458 for any that begin 'debug_' and are long names. */ 1459 LANG_FOR_EACH_INPUT_STATEMENT (is) 1460 { 1461 int found_debug = 0; 1462 1463 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug); 1464 if (found_debug) 1465 { 1466 pep_use_coff_long_section_names = 1; 1467 break; 1468 } 1469 } 1470 } 1471 } 1472 1473 pep_output_file_set_long_section_names (link_info.output_bfd); 1474 1475#ifdef DLL_SUPPORT 1476 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1477 pep_fixup_stdcalls (); 1478 1479 pep_process_import_defs (link_info.output_bfd, &link_info); 1480 1481 pep_find_data_imports (); 1482 1483 /* As possibly new symbols are added by imports, we rerun 1484 stdcall/fastcall fixup here. */ 1485 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1486 pep_fixup_stdcalls (); 1487 1488#ifndef TARGET_IS_i386pep 1489 if (link_info.shared) 1490#else 1491 if (!link_info.relocatable) 1492#endif 1493 pep_dll_build_sections (link_info.output_bfd, &link_info); 1494 1495#ifndef TARGET_IS_i386pep 1496 else 1497 pep_exe_build_sections (link_info.output_bfd, &link_info); 1498#endif 1499#endif /* DLL_SUPPORT */ 1500 1501 { 1502 /* This next chunk of code tries to detect the case where you have 1503 two import libraries for the same DLL (specifically, 1504 symbolically linking libm.a and libc.a in cygwin to 1505 libcygwin.a). In those cases, it's possible for function 1506 thunks from the second implib to be used but without the 1507 head/tail objects, causing an improper import table. We detect 1508 those cases and rename the "other" import libraries to match 1509 the one the head/tail come from, so that the linker will sort 1510 things nicely and produce a valid import table. */ 1511 1512 LANG_FOR_EACH_INPUT_STATEMENT (is) 1513 { 1514 if (is->the_bfd->my_archive) 1515 { 1516 int idata2 = 0, reloc_count=0, is_imp = 0; 1517 asection *sec; 1518 1519 /* See if this is an import library thunk. */ 1520 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1521 { 1522 if (strcmp (sec->name, ".idata\$2") == 0) 1523 idata2 = 1; 1524 if (CONST_STRNEQ (sec->name, ".idata\$")) 1525 is_imp = 1; 1526 reloc_count += sec->reloc_count; 1527 } 1528 1529 if (is_imp && !idata2 && reloc_count) 1530 { 1531 /* It is, look for the reference to head and see if it's 1532 from our own library. */ 1533 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1534 { 1535 int i; 1536 long relsize; 1537 asymbol **symbols; 1538 arelent **relocs; 1539 int nrelocs; 1540 1541 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); 1542 if (relsize < 1) 1543 break; 1544 1545 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1546 { 1547 einfo (_("%B%F: could not read symbols: %E\n"), 1548 is->the_bfd); 1549 return; 1550 } 1551 symbols = bfd_get_outsymbols (is->the_bfd); 1552 1553 relocs = xmalloc ((size_t) relsize); 1554 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, 1555 relocs, symbols); 1556 if (nrelocs < 0) 1557 { 1558 free (relocs); 1559 einfo ("%X%P: unable to process relocs: %E\n"); 1560 return; 1561 } 1562 1563 for (i = 0; i < nrelocs; i++) 1564 { 1565 struct bfd_symbol *s; 1566 struct bfd_link_hash_entry * blhe; 1567 char *other_bfd_filename; 1568 char *n; 1569 1570 s = (relocs[i]->sym_ptr_ptr)[0]; 1571 1572 if (s->flags & BSF_LOCAL) 1573 continue; 1574 1575 /* Thunk section with reloc to another bfd. */ 1576 blhe = bfd_link_hash_lookup (link_info.hash, 1577 s->name, 1578 FALSE, FALSE, TRUE); 1579 1580 if (blhe == NULL 1581 || blhe->type != bfd_link_hash_defined) 1582 continue; 1583 1584 other_bfd_filename 1585 = blhe->u.def.section->owner->my_archive 1586 ? bfd_get_filename (blhe->u.def.section->owner->my_archive) 1587 : bfd_get_filename (blhe->u.def.section->owner); 1588 1589 if (filename_cmp (bfd_get_filename 1590 (is->the_bfd->my_archive), 1591 other_bfd_filename) == 0) 1592 continue; 1593 1594 /* Rename this implib to match the other one. */ 1595 n = xmalloc (strlen (other_bfd_filename) + 1); 1596 strcpy (n, other_bfd_filename); 1597 is->the_bfd->my_archive->filename = n; 1598 } 1599 1600 free (relocs); 1601 /* Note - we do not free the symbols, 1602 they are now cached in the BFD. */ 1603 } 1604 } 1605 } 1606 } 1607 } 1608 1609 { 1610 int is_ms_arch = 0; 1611 bfd *cur_arch = 0; 1612 lang_input_statement_type *is2; 1613 lang_input_statement_type *is3; 1614 1615 /* Careful - this is a shell script. Watch those dollar signs! */ 1616 /* Microsoft import libraries have every member named the same, 1617 and not in the right order for us to link them correctly. We 1618 must detect these and rename the members so that they'll link 1619 correctly. There are three types of objects: the head, the 1620 thunks, and the sentinel(s). The head is easy; it's the one 1621 with idata2. We assume that the sentinels won't have relocs, 1622 and the thunks will. It's easier than checking the symbol 1623 table for external references. */ 1624 LANG_FOR_EACH_INPUT_STATEMENT (is) 1625 { 1626 if (is->the_bfd->my_archive) 1627 { 1628 char *pnt; 1629 bfd *arch = is->the_bfd->my_archive; 1630 1631 if (cur_arch != arch) 1632 { 1633 cur_arch = arch; 1634 is_ms_arch = 1; 1635 1636 for (is3 = is; 1637 is3 && is3->the_bfd->my_archive == arch; 1638 is3 = (lang_input_statement_type *) is3->next) 1639 { 1640 /* A MS dynamic import library can also contain static 1641 members, so look for the first element with a .dll 1642 extension, and use that for the remainder of the 1643 comparisons. */ 1644 pnt = strrchr (is3->the_bfd->filename, '.'); 1645 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0) 1646 break; 1647 } 1648 1649 if (is3 == NULL) 1650 is_ms_arch = 0; 1651 else 1652 { 1653 /* OK, found one. Now look to see if the remaining 1654 (dynamic import) members use the same name. */ 1655 for (is2 = is; 1656 is2 && is2->the_bfd->my_archive == arch; 1657 is2 = (lang_input_statement_type *) is2->next) 1658 { 1659 /* Skip static members, ie anything with a .obj 1660 extension. */ 1661 pnt = strrchr (is2->the_bfd->filename, '.'); 1662 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0) 1663 continue; 1664 1665 if (filename_cmp (is3->the_bfd->filename, 1666 is2->the_bfd->filename)) 1667 { 1668 is_ms_arch = 0; 1669 break; 1670 } 1671 } 1672 } 1673 } 1674 1675 /* This fragment might have come from an .obj file in a Microsoft 1676 import, and not an actual import record. If this is the case, 1677 then leave the filename alone. */ 1678 pnt = strrchr (is->the_bfd->filename, '.'); 1679 1680 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0)) 1681 { 1682 int idata2 = 0, reloc_count=0; 1683 asection *sec; 1684 char *new_name, seq; 1685 1686 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1687 { 1688 if (strcmp (sec->name, ".idata\$2") == 0) 1689 idata2 = 1; 1690 reloc_count += sec->reloc_count; 1691 } 1692 1693 if (idata2) /* .idata2 is the TOC */ 1694 seq = 'a'; 1695 else if (reloc_count > 0) /* thunks */ 1696 seq = 'b'; 1697 else /* sentinel */ 1698 seq = 'c'; 1699 1700 new_name = xmalloc (strlen (is->the_bfd->filename) + 3); 1701 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); 1702 is->the_bfd->filename = new_name; 1703 1704 new_name = xmalloc (strlen (is->filename) + 3); 1705 sprintf (new_name, "%s.%c", is->filename, seq); 1706 is->filename = new_name; 1707 } 1708 } 1709 } 1710 } 1711} 1712 1713static void 1714gld_${EMULATION_NAME}_before_allocation (void) 1715{ 1716 is_underscoring (); 1717 before_allocation_default (); 1718} 1719 1720#ifdef DLL_SUPPORT 1721/* This is called when an input file isn't recognized as a BFD. We 1722 check here for .DEF files and pull them in automatically. */ 1723 1724static int 1725saw_option (char *option) 1726{ 1727 int i; 1728 1729 is_underscoring (); 1730 1731 for (i = 0; init[i].ptr; i++) 1732 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0) 1733 return init[i].inited; 1734 return 0; 1735} 1736#endif /* DLL_SUPPORT */ 1737 1738static bfd_boolean 1739gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1740{ 1741#ifdef DLL_SUPPORT 1742 const char *ext = entry->filename + strlen (entry->filename) - 4; 1743 1744 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0) 1745 { 1746 pep_def_file = def_file_parse (entry->filename, pep_def_file); 1747 1748 if (pep_def_file) 1749 { 1750 int i, buflen=0, len; 1751 char *buf; 1752 1753 for (i = 0; i < pep_def_file->num_exports; i++) 1754 { 1755 len = strlen (pep_def_file->exports[i].internal_name); 1756 if (buflen < len + 2) 1757 buflen = len + 2; 1758 } 1759 1760 buf = xmalloc (buflen); 1761 1762 for (i = 0; i < pep_def_file->num_exports; i++) 1763 { 1764 struct bfd_link_hash_entry *h; 1765 1766 sprintf (buf, "%s%s", U (""), 1767 pep_def_file->exports[i].internal_name); 1768 1769 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); 1770 if (h == (struct bfd_link_hash_entry *) NULL) 1771 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); 1772 if (h->type == bfd_link_hash_new) 1773 { 1774 h->type = bfd_link_hash_undefined; 1775 h->u.undef.abfd = NULL; 1776 bfd_link_add_undef (link_info.hash, h); 1777 } 1778 } 1779 free (buf); 1780 1781 /* def_file_print (stdout, pep_def_file); */ 1782 if (pep_def_file->is_dll == 1) 1783 link_info.shared = 1; 1784 1785 if (pep_def_file->base_address != (bfd_vma)(-1)) 1786 { 1787 pep.ImageBase 1788 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase 1789 = init[IMAGEBASEOFF].value 1790 = pep_def_file->base_address; 1791 init[IMAGEBASEOFF].inited = 1; 1792 if (image_base_statement) 1793 image_base_statement->exp 1794 = exp_assign ("__image_base__", exp_intop (pep.ImageBase), 1795 FALSE); 1796 } 1797 1798 if (pep_def_file->stack_reserve != -1 1799 && ! saw_option ("__size_of_stack_reserve__")) 1800 { 1801 pep.SizeOfStackReserve = pep_def_file->stack_reserve; 1802 if (pep_def_file->stack_commit != -1) 1803 pep.SizeOfStackCommit = pep_def_file->stack_commit; 1804 } 1805 if (pep_def_file->heap_reserve != -1 1806 && ! saw_option ("__size_of_heap_reserve__")) 1807 { 1808 pep.SizeOfHeapReserve = pep_def_file->heap_reserve; 1809 if (pep_def_file->heap_commit != -1) 1810 pep.SizeOfHeapCommit = pep_def_file->heap_commit; 1811 } 1812 return TRUE; 1813 } 1814 } 1815#endif 1816 return FALSE; 1817} 1818 1819static bfd_boolean 1820gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1821{ 1822 is_underscoring (); 1823#ifdef DLL_SUPPORT 1824#ifdef TARGET_IS_i386pep 1825 pep_dll_id_target ("pei-x86-64"); 1826#endif 1827 if (pep_bfd_is_dll (entry->the_bfd)) 1828 return pep_implied_import_dll (entry->filename); 1829#endif 1830 return FALSE; 1831} 1832 1833static void 1834gld_${EMULATION_NAME}_finish (void) 1835{ 1836 is_underscoring (); 1837 finish_default (); 1838 1839#ifdef DLL_SUPPORT 1840 if (link_info.shared 1841 || (!link_info.relocatable && pep_def_file->num_exports != 0)) 1842 { 1843 pep_dll_fill_sections (link_info.output_bfd, &link_info); 1844 if (pep_implib_filename) 1845 pep_dll_generate_implib (pep_def_file, pep_implib_filename, &link_info); 1846 } 1847 1848 if (pep_out_def_filename) 1849 pep_dll_generate_def_file (pep_out_def_filename); 1850#endif /* DLL_SUPPORT */ 1851 1852 /* I don't know where .idata gets set as code, but it shouldn't be. */ 1853 { 1854 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata"); 1855 1856 if (asec) 1857 { 1858 asec->flags &= ~SEC_CODE; 1859 asec->flags |= SEC_DATA; 1860 } 1861 } 1862} 1863 1864 1865/* Place an orphan section. 1866 1867 We use this to put sections in a reasonable place in the file, and 1868 to ensure that they are aligned as required. 1869 1870 We handle grouped sections here as well. A section named .foo\$nn 1871 goes into the output section .foo. All grouped sections are sorted 1872 by name. 1873 1874 Grouped sections for the default sections are handled by the 1875 default linker script using wildcards, and are sorted by 1876 sort_sections. */ 1877 1878static lang_output_section_statement_type * 1879gld_${EMULATION_NAME}_place_orphan (asection *s, 1880 const char *secname, 1881 int constraint) 1882{ 1883 const char *orig_secname = secname; 1884 char *dollar = NULL; 1885 lang_output_section_statement_type *os; 1886 lang_statement_list_type add_child; 1887 lang_output_section_statement_type *match_by_name = NULL; 1888 lang_statement_union_type **pl; 1889 1890 /* Look through the script to see where to place this section. */ 1891 if (!link_info.relocatable 1892 && (dollar = strchr (secname, '\$')) != NULL) 1893 { 1894 size_t len = dollar - secname; 1895 char *newname = xmalloc (len + 1); 1896 memcpy (newname, secname, len); 1897 newname[len] = '\0'; 1898 secname = newname; 1899 } 1900 1901 lang_list_init (&add_child); 1902 1903 os = NULL; 1904 if (constraint == 0) 1905 for (os = lang_output_section_find (secname); 1906 os != NULL; 1907 os = next_matching_output_section_statement (os, 0)) 1908 { 1909 /* If we don't match an existing output section, tell 1910 lang_insert_orphan to create a new output section. */ 1911 constraint = SPECIAL; 1912 1913 if (os->bfd_section != NULL 1914 && (os->bfd_section->flags == 0 1915 || ((s->flags ^ os->bfd_section->flags) 1916 & (SEC_LOAD | SEC_ALLOC)) == 0)) 1917 { 1918 /* We already have an output section statement with this 1919 name, and its bfd section has compatible flags. 1920 If the section already exists but does not have any flags set, 1921 then it has been created by the linker, probably as a result of 1922 a --section-start command line switch. */ 1923 lang_add_section (&add_child, s, NULL, os); 1924 break; 1925 } 1926 1927 /* Save unused output sections in case we can match them 1928 against orphans later. */ 1929 if (os->bfd_section == NULL) 1930 match_by_name = os; 1931 } 1932 1933 /* If we didn't match an active output section, see if we matched an 1934 unused one and use that. */ 1935 if (os == NULL && match_by_name) 1936 { 1937 lang_add_section (&match_by_name->children, s, NULL, match_by_name); 1938 return match_by_name; 1939 } 1940 1941 if (os == NULL) 1942 { 1943 static struct orphan_save hold[] = 1944 { 1945 { ".text", 1946 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, 1947 0, 0, 0, 0 }, 1948 { ".idata", 1949 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 1950 0, 0, 0, 0 }, 1951 { ".rdata", 1952 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 1953 0, 0, 0, 0 }, 1954 { ".data", 1955 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, 1956 0, 0, 0, 0 }, 1957 { ".bss", 1958 SEC_ALLOC, 1959 0, 0, 0, 0 } 1960 }; 1961 enum orphan_save_index 1962 { 1963 orphan_text = 0, 1964 orphan_idata, 1965 orphan_rodata, 1966 orphan_data, 1967 orphan_bss 1968 }; 1969 static int orphan_init_done = 0; 1970 struct orphan_save *place; 1971 lang_output_section_statement_type *after; 1972 etree_type *address; 1973 1974 if (!orphan_init_done) 1975 { 1976 struct orphan_save *ho; 1977 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) 1978 if (ho->name != NULL) 1979 { 1980 ho->os = lang_output_section_find (ho->name); 1981 if (ho->os != NULL && ho->os->flags == 0) 1982 ho->os->flags = ho->flags; 1983 } 1984 orphan_init_done = 1; 1985 } 1986 1987 /* Try to put the new output section in a reasonable place based 1988 on the section name and section flags. */ 1989 1990 place = NULL; 1991 if ((s->flags & SEC_ALLOC) == 0) 1992 ; 1993 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 1994 place = &hold[orphan_bss]; 1995 else if ((s->flags & SEC_READONLY) == 0) 1996 place = &hold[orphan_data]; 1997 else if ((s->flags & SEC_CODE) == 0) 1998 { 1999 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata] 2000 : &hold[orphan_rodata]); 2001 } 2002 else 2003 place = &hold[orphan_text]; 2004 2005 after = NULL; 2006 if (place != NULL) 2007 { 2008 if (place->os == NULL) 2009 place->os = lang_output_section_find (place->name); 2010 after = place->os; 2011 if (after == NULL) 2012 after = lang_output_section_find_by_flags (s, &place->os, NULL); 2013 if (after == NULL) 2014 /* *ABS* is always the first output section statement. */ 2015 after = (&lang_output_section_statement.head 2016 ->output_section_statement); 2017 } 2018 2019 /* All sections in an executable must be aligned to a page boundary. 2020 In a relocatable link, just preserve the incoming alignment; the 2021 address is discarded by lang_insert_orphan in that case, anyway. */ 2022 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); 2023 os = lang_insert_orphan (s, secname, constraint, after, place, address, 2024 &add_child); 2025 if (link_info.relocatable) 2026 { 2027 os->section_alignment = s->alignment_power; 2028 os->bfd_section->alignment_power = s->alignment_power; 2029 } 2030 } 2031 2032 /* If the section name has a '\$', sort it with the other '\$' 2033 sections. */ 2034 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next) 2035 { 2036 lang_input_section_type *ls; 2037 const char *lname; 2038 2039 if ((*pl)->header.type != lang_input_section_enum) 2040 continue; 2041 2042 ls = &(*pl)->input_section; 2043 2044 lname = bfd_get_section_name (ls->section->owner, ls->section); 2045 if (strchr (lname, '\$') != NULL 2046 && (dollar == NULL || strcmp (orig_secname, lname) < 0)) 2047 break; 2048 } 2049 2050 if (add_child.head != NULL) 2051 { 2052 *add_child.tail = *pl; 2053 *pl = add_child.head; 2054 } 2055 2056 return os; 2057} 2058 2059static bfd_boolean 2060gld_${EMULATION_NAME}_open_dynamic_archive 2061 (const char *arch ATTRIBUTE_UNUSED, 2062 search_dirs_type *search, 2063 lang_input_statement_type *entry) 2064{ 2065 static const struct 2066 { 2067 const char * format; 2068 bfd_boolean use_prefix; 2069 } 2070 libname_fmt [] = 2071 { 2072 /* Preferred explicit import library for dll's. */ 2073 { "lib%s.dll.a", FALSE }, 2074 /* Alternate explicit import library for dll's. */ 2075 { "%s.dll.a", FALSE }, 2076 /* "libfoo.a" could be either an import lib or a static lib. 2077 For backwards compatibility, libfoo.a needs to precede 2078 libfoo.dll and foo.dll in the search. */ 2079 { "lib%s.a", FALSE }, 2080 /* The 'native' spelling of an import lib name is "foo.lib". */ 2081 { "%s.lib", FALSE }, 2082#ifdef DLL_SUPPORT 2083 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ 2084 { "%s%s.dll", TRUE }, 2085#endif 2086 /* Try "libfoo.dll" (default preferred dll name). */ 2087 { "lib%s.dll", FALSE }, 2088 /* Finally try 'native' dll name "foo.dll". */ 2089 { "%s.dll", FALSE }, 2090 /* Note: If adding more formats to this table, make sure to check to 2091 see if their length is longer than libname_fmt[0].format, and if 2092 so, update the call to xmalloc() below. */ 2093 { NULL, FALSE } 2094 }; 2095 static unsigned int format_max_len = 0; 2096 const char * filename; 2097 char * full_string; 2098 char * base_string; 2099 unsigned int i; 2100 2101 2102 if (! entry->flags.maybe_archive || entry->flags.full_name_provided) 2103 return FALSE; 2104 2105 filename = entry->filename; 2106 2107 if (format_max_len == 0) 2108 /* We need to allow space in the memory that we are going to allocate 2109 for the characters in the format string. Since the format array is 2110 static we only need to calculate this information once. In theory 2111 this value could also be computed statically, but this introduces 2112 the possibility for a discrepancy and hence a possible memory 2113 corruption. The lengths we compute here will be too long because 2114 they will include any formating characters (%s) in the strings, but 2115 this will not matter. */ 2116 for (i = 0; libname_fmt[i].format; i++) 2117 if (format_max_len < strlen (libname_fmt[i].format)) 2118 format_max_len = strlen (libname_fmt[i].format); 2119 2120 full_string = xmalloc (strlen (search->name) 2121 + strlen (filename) 2122 + format_max_len 2123#ifdef DLL_SUPPORT 2124 + (pep_dll_search_prefix 2125 ? strlen (pep_dll_search_prefix) : 0) 2126#endif 2127 /* Allow for the terminating NUL and for the path 2128 separator character that is inserted between 2129 search->name and the start of the format string. */ 2130 + 2); 2131 2132 sprintf (full_string, "%s/", search->name); 2133 base_string = full_string + strlen (full_string); 2134 2135 for (i = 0; libname_fmt[i].format; i++) 2136 { 2137#ifdef DLL_SUPPORT 2138 if (libname_fmt[i].use_prefix) 2139 { 2140 if (!pep_dll_search_prefix) 2141 continue; 2142 sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename); 2143 } 2144 else 2145#endif 2146 sprintf (base_string, libname_fmt[i].format, filename); 2147 2148 if (ldfile_try_open_bfd (full_string, entry)) 2149 break; 2150 } 2151 2152 if (!libname_fmt[i].format) 2153 { 2154 free (full_string); 2155 return FALSE; 2156 } 2157 2158 entry->filename = full_string; 2159 2160 return TRUE; 2161} 2162 2163static int 2164gld_${EMULATION_NAME}_find_potential_libraries 2165 (char *name, lang_input_statement_type *entry) 2166{ 2167 return ldfile_open_file_search (name, entry, "", ".lib"); 2168} 2169 2170static char * 2171gld_${EMULATION_NAME}_get_script (int *isfile) 2172EOF 2173# Scripts compiled in. 2174# sed commands to quote an ld script as a C string. 2175sc="-f stringify.sed" 2176 2177fragment <<EOF 2178{ 2179 *isfile = 0; 2180 2181 if (link_info.relocatable && config.build_constructors) 2182 return 2183EOF 2184sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 2185echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c 2186sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 2187echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 2188sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 2189echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 2190sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 2191if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then 2192echo ' ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return' >> e${EMULATION_NAME}.c 2193sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c 2194fi 2195echo ' ; else return' >> e${EMULATION_NAME}.c 2196sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 2197echo '; }' >> e${EMULATION_NAME}.c 2198 2199fragment <<EOF 2200 2201 2202struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 2203{ 2204 gld_${EMULATION_NAME}_before_parse, 2205 syslib_default, 2206 hll_default, 2207 gld_${EMULATION_NAME}_after_parse, 2208 gld_${EMULATION_NAME}_after_open, 2209 after_allocation_default, 2210 set_output_arch_default, 2211 ldemul_default_target, 2212 gld_${EMULATION_NAME}_before_allocation, 2213 gld_${EMULATION_NAME}_get_script, 2214 "${EMULATION_NAME}", 2215 "${OUTPUT_FORMAT}", 2216 gld_${EMULATION_NAME}_finish, 2217 NULL, /* Create output section statements. */ 2218 gld_${EMULATION_NAME}_open_dynamic_archive, 2219 gld_${EMULATION_NAME}_place_orphan, 2220 gld_${EMULATION_NAME}_set_symbols, 2221 NULL, /* parse_args */ 2222 gld${EMULATION_NAME}_add_options, 2223 gld${EMULATION_NAME}_handle_option, 2224 gld_${EMULATION_NAME}_unrecognized_file, 2225 gld_${EMULATION_NAME}_list_options, 2226 gld_${EMULATION_NAME}_recognized_file, 2227 gld_${EMULATION_NAME}_find_potential_libraries, 2228 NULL, /* new_vers_pattern. */ 2229 NULL /* extra_map_file_text */ 2230}; 2231EOF 2232