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 8rm -f e${EMULATION_NAME}.c 9(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-) 10fragment <<EOF 11/* Copyright (C) 1995-2016 Free Software Foundation, Inc. 12 13 This file is part of the GNU Binutils. 14 15 This program is free software; you can redistribute it and/or modify 16 it under the terms of the GNU General Public License as published by 17 the Free Software Foundation; either version 3 of the License, or 18 (at your option) any later version. 19 20 This program is distributed in the hope that it will be useful, 21 but WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 GNU General Public License for more details. 24 25 You should have received a copy of the GNU General Public License 26 along with this program; if not, write to the Free Software 27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 28 MA 02110-1301, USA. */ 29 30 31/* For WINDOWS_NT */ 32/* The original file generated returned different default scripts depending 33 on whether certain switches were set, but these switches pertain to the 34 Linux system and that particular version of coff. In the NT case, we 35 only determine if the subsystem is console or windows in order to select 36 the correct entry point by default. */ 37 38#define TARGET_IS_${EMULATION_NAME} 39 40/* Do this before including bfd.h, so we prototype the right functions. */ 41 42#if defined(TARGET_IS_armpe) \ 43 || defined(TARGET_IS_arm_epoc_pe) \ 44 || defined(TARGET_IS_arm_wince_pe) 45#define bfd_arm_allocate_interworking_sections \ 46 bfd_${EMULATION_NAME}_allocate_interworking_sections 47#define bfd_arm_get_bfd_for_interworking \ 48 bfd_${EMULATION_NAME}_get_bfd_for_interworking 49#define bfd_arm_process_before_allocation \ 50 bfd_${EMULATION_NAME}_process_before_allocation 51#endif 52 53#include "sysdep.h" 54#include "bfd.h" 55#include "bfdlink.h" 56#include "getopt.h" 57#include "libiberty.h" 58#include "filenames.h" 59#include "ld.h" 60#include "ldmain.h" 61#include "ldexp.h" 62#include "ldlang.h" 63#include "ldfile.h" 64#include "ldemul.h" 65#include <ldgram.h> 66#include "ldlex.h" 67#include "ldmisc.h" 68#include "ldctor.h" 69#include "ldbuildid.h" 70#include "coff/internal.h" 71 72/* FIXME: See bfd/peXXigen.c for why we include an architecture specific 73 header in generic PE code. */ 74#include "coff/i386.h" 75#include "coff/pe.h" 76 77/* FIXME: These are BFD internal header files, and we should not be 78 using it here. */ 79#include "../bfd/libcoff.h" 80#include "../bfd/libpei.h" 81 82#include "deffile.h" 83#include "pe-dll.h" 84#include "safe-ctype.h" 85 86/* Permit the emulation parameters to override the default section 87 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes 88 it seem that include/coff/internal.h should not define 89 PE_DEF_SECTION_ALIGNMENT. */ 90#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT} 91#undef PE_DEF_SECTION_ALIGNMENT 92#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT} 93#endif 94 95#if defined(TARGET_IS_i386pe) \ 96 || defined(TARGET_IS_shpe) \ 97 || defined(TARGET_IS_armpe) \ 98 || defined(TARGET_IS_arm_epoc_pe) \ 99 || defined(TARGET_IS_arm_wince_pe) 100#define DLL_SUPPORT 101#endif 102 103#if defined(TARGET_IS_i386pe) 104#define DEFAULT_PSEUDO_RELOC_VERSION 2 105#else 106#define DEFAULT_PSEUDO_RELOC_VERSION 1 107#endif 108 109#if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT) 110#define PE_DEF_SUBSYSTEM 3 111#else 112#undef NT_EXE_IMAGE_BASE 113#undef PE_DEF_SECTION_ALIGNMENT 114#undef PE_DEF_FILE_ALIGNMENT 115#define NT_EXE_IMAGE_BASE 0x00010000 116 117#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 118#define PE_DEF_SECTION_ALIGNMENT 0x00001000 119#define PE_DEF_SUBSYSTEM 9 120#else 121#define PE_DEF_SECTION_ALIGNMENT 0x00000400 122#define PE_DEF_SUBSYSTEM 2 123#endif 124#define PE_DEF_FILE_ALIGNMENT 0x00000200 125#endif 126 127static struct internal_extra_pe_aouthdr pe; 128static int dll; 129static int pe_subsystem = ${SUBSYSTEM}; 130static flagword real_flags = 0; 131static int support_old_code = 0; 132static char * thumb_entry_symbol = NULL; 133static lang_assignment_statement_type *image_base_statement = 0; 134static unsigned short pe_dll_characteristics = 0; 135static bfd_boolean insert_timestamp = TRUE; 136static const char *emit_build_id; 137 138#ifdef DLL_SUPPORT 139static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */ 140static char *pe_out_def_filename = NULL; 141static char *pe_implib_filename = NULL; 142static int pe_enable_auto_image_base = 0; 143static unsigned long pe_auto_image_base = 0x61500000; 144static char *pe_dll_search_prefix = NULL; 145#endif 146 147extern const char *output_filename; 148 149static int is_underscoring (void) 150{ 151 int u = 0; 152 if (pe_leading_underscore != -1) 153 return pe_leading_underscore; 154 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL)) 155 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL); 156 157 if (u == -1) 158 abort (); 159 pe_leading_underscore = (u != 0 ? 1 : 0); 160 return pe_leading_underscore; 161} 162 163static void 164gld_${EMULATION_NAME}_before_parse (void) 165{ 166 is_underscoring (); 167 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); 168 output_filename = "${EXECUTABLE_NAME:-a.exe}"; 169#ifdef DLL_SUPPORT 170 input_flags.dynamic = TRUE; 171 config.has_shared = 1; 172EOF 173 174# Cygwin no longer wants these noisy warnings. Other PE 175# targets might like to consider adding themselves here. 176# See also the mail thread starting here for the reason why 177# merge_rdata defaults to 0 for cygwin: 178# http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html 179case ${target} in 180 *-*-cygwin*) 181 default_auto_import=1 182 default_merge_rdata=0 183 ;; 184 i[3-7]86-*-mingw* | x86_64-*-mingw*) 185 default_auto_import=1 186 default_merge_rdata=0 187 ;; 188 *) 189 default_auto_import=-1 190 default_merge_rdata=1 191 ;; 192esac 193 194fragment <<EOF 195 link_info.pei386_auto_import = ${default_auto_import}; 196 /* Use by default version. */ 197 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION; 198#endif 199} 200 201/* Indicates if RDATA shall be merged into DATA when pseudo-relocation 202 version 2 is used and auto-import is enabled. */ 203#define MERGE_RDATA_V2 ${default_merge_rdata} 204 205/* PE format extra command line options. */ 206 207/* Used for setting flags in the PE header. */ 208#define OPTION_BASE_FILE (300 + 1) 209#define OPTION_DLL (OPTION_BASE_FILE + 1) 210#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) 211#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) 212#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) 213#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) 214#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) 215#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) 216#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) 217#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) 218#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) 219#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) 220#define OPTION_SUBSYSTEM (OPTION_STACK + 1) 221#define OPTION_HEAP (OPTION_SUBSYSTEM + 1) 222#define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1) 223#define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1) 224#define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1) 225#define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1) 226#define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1) 227#define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1) 228#define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1) 229#define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1) 230#define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1) 231#define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1) 232#define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1) 233#define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1) 234#define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1) 235#define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1) 236#define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1) 237#define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1) 238#define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1) 239#define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1) 240#define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1) 241#define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1) 242#define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1) 243#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \ 244 (OPTION_EXCLUDE_LIBS + 1) 245#define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \ 246 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1) 247#define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1) 248#define OPTION_DISABLE_LARGE_ADDRESS_AWARE \ 249 (OPTION_LARGE_ADDRESS_AWARE + 1) 250#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \ 251 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1) 252#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \ 253 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1) 254#define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \ 255 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1) 256#define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \ 257 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1) 258#define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1) 259#define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1) 260#define OPTION_ENABLE_LONG_SECTION_NAMES \ 261 (OPTION_LEADING_UNDERSCORE + 1) 262#define OPTION_DISABLE_LONG_SECTION_NAMES \ 263 (OPTION_ENABLE_LONG_SECTION_NAMES + 1) 264/* DLLCharacteristics flags. */ 265#define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1) 266#define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1) 267#define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1) 268#define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1) 269#define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1) 270#define OPTION_NO_BIND (OPTION_NO_SEH + 1) 271#define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1) 272#define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1) 273/* Determinism. */ 274#define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1) 275#define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1) 276#define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1) 277 278static void 279gld${EMULATION_NAME}_add_options 280 (int ns ATTRIBUTE_UNUSED, 281 char **shortopts ATTRIBUTE_UNUSED, 282 int nl, 283 struct option **longopts, 284 int nrl ATTRIBUTE_UNUSED, 285 struct option **really_longopts ATTRIBUTE_UNUSED) 286{ 287 static const struct option xtra_long[] = 288 { 289 /* PE options. */ 290 {"base-file", required_argument, NULL, OPTION_BASE_FILE}, 291 {"dll", no_argument, NULL, OPTION_DLL}, 292 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, 293 {"heap", required_argument, NULL, OPTION_HEAP}, 294 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, 295 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, 296 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, 297 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, 298 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, 299 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, 300 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, 301 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, 302 {"stack", required_argument, NULL, OPTION_STACK}, 303 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, 304 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, 305 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, 306 {"use-nul-prefixed-import-tables", no_argument, NULL, 307 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES}, 308 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE}, 309 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE}, 310 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP}, 311 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP}, 312#ifdef DLL_SUPPORT 313 /* getopt allows abbreviations, so we do this to stop it 314 from treating -o as an abbreviation for this option. */ 315 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 316 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 317 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL}, 318 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS}, 319 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS}, 320 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, 321 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB}, 322 {"kill-at", no_argument, NULL, OPTION_KILL_ATS}, 323 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES}, 324 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP}, 325 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP}, 326 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME}, 327 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS}, 328 /* getopt() allows abbreviations, so we do this to stop it from 329 treating -c as an abbreviation for these --compat-implib. */ 330 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 331 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 332 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE}, 333 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE}, 334 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX}, 335 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES}, 336 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT}, 337 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT}, 338 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG}, 339 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC}, 340 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC}, 341 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1}, 342 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2}, 343#endif 344 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE}, 345 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE}, 346 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES}, 347 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES}, 348 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE}, 349 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY}, 350 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT}, 351 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION}, 352 {"no-seh", no_argument, NULL, OPTION_NO_SEH}, 353 {"no-bind", no_argument, NULL, OPTION_NO_BIND}, 354 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER}, 355 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE}, 356 {"build-id", optional_argument, NULL, OPTION_BUILD_ID}, 357 {NULL, no_argument, NULL, 0} 358 }; 359 360 *longopts 361 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); 362 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); 363} 364 365/* PE/WIN32; added routines to get the subsystem type, heap and/or stack 366 parameters which may be input from the command line. */ 367 368typedef struct 369{ 370 void *ptr; 371 int size; 372 int value; 373 char *symbol; 374 int inited; 375 /* FALSE for an assembly level symbol and TRUE for a C visible symbol. 376 C visible symbols can be prefixed by underscore dependent to target's 377 settings. */ 378 bfd_boolean is_c_symbol; 379} definfo; 380 381/* Get symbol name dependent to kind and C visible state of 382 underscore. */ 383#define GET_INIT_SYMBOL_NAME(IDX) \ 384 (init[(IDX)].symbol \ 385 + ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () != 0)) ? 0 : 1)) 386 387/* Decorates the C visible symbol by underscore, if target requires. */ 388#define U(CSTR) \ 389 ((is_underscoring () == 0) ? CSTR : "_" CSTR) 390 391/* Get size of constant string for a possible underscore prefixed 392 C visible symbol. */ 393#define U_SIZE(CSTR) \ 394 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1)) 395 396#define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc} 397 398static definfo init[] = 399{ 400 /* imagebase must be first */ 401#define IMAGEBASEOFF 0 402 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE), 403#define DLLOFF 1 404 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE}, 405#define MSIMAGEBASEOFF 2 406 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE), 407 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE), 408 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE), 409 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE), 410 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE), 411 D(MajorImageVersion,"__major_image_version__", 1, FALSE), 412 D(MinorImageVersion,"__minor_image_version__", 0, FALSE), 413#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 414 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE), 415#else 416 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE), 417#endif 418 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE), 419 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE), 420 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE), 421 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE), 422 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE), 423 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE), 424 D(LoaderFlags,"__loader_flags__", 0x0, FALSE), 425 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE), 426 { NULL, 0, 0, NULL, 0 , FALSE} 427}; 428 429 430static void 431gld_${EMULATION_NAME}_list_options (FILE *file) 432{ 433 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n")); 434 fprintf (file, _(" --dll Set image base to the default for DLLs\n")); 435 fprintf (file, _(" --file-alignment <size> Set file alignment\n")); 436 fprintf (file, _(" --heap <size> Set initial size of the heap\n")); 437 fprintf (file, _(" --image-base <address> Set start address of the executable\n")); 438 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n")); 439 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n")); 440 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n")); 441 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n")); 442 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n")); 443 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n")); 444 fprintf (file, _(" --section-alignment <size> Set section alignment\n")); 445 fprintf (file, _(" --stack <size> Set size of the initial stack\n")); 446 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); 447 fprintf (file, _(" --support-old-code Support interworking with old code\n")); 448 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n")); 449 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n")); 450 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n")); 451 fprintf (file, _(" This makes binaries non-deterministic\n")); 452#ifdef DLL_SUPPORT 453 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); 454 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); 455 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n")); 456 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n")); 457 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n")); 458 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n")); 459 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n")); 460 fprintf (file, _(" Exclude objects, archive members from auto\n")); 461 fprintf (file, _(" export, place into import library instead.\n")); 462 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n")); 463 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n")); 464 fprintf (file, _(" --out-implib <file> Generate import library\n")); 465 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); 466 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n")); 467 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\ 468 create __imp_<SYMBOL> as well.\n")); 469 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\ 470 (optionally starting with address) unless\n\ 471 specifically set with --image-base\n")); 472 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n")); 473 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\ 474 an importlib, use <string><basename>.dll\n\ 475 in preference to lib<basename>.dll \n")); 476 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\ 477 __imp_sym for DATA references\n")); 478 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n")); 479 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\ 480 adding pseudo-relocations resolved at\n\ 481 runtime.\n")); 482 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\ 483 auto-imported DATA.\n")); 484 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\ 485 or linking to DLLs (esp. auto-import)\n")); 486#endif 487 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\ 488 greater than 2 gigabytes\n")); 489 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\ 490 addresses greater than 2 gigabytes\n")); 491 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\ 492 executable image files\n")); 493 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\ 494 in object files\n")); 495 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\ 496 address space layout randomization (ASLR)\n")); 497 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n")); 498 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n")); 499 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n")); 500 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\ 501 be called in this image\n")); 502 fprintf (file, _(" --no-bind Do not bind this image\n")); 503 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n")); 504 fprintf (file, _(" --tsaware Image is Terminal Server aware\n")); 505 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n")); 506} 507 508 509static void 510set_pe_name (char *name, long val) 511{ 512 int i; 513 is_underscoring (); 514 515 /* Find the name and set it. */ 516 for (i = 0; init[i].ptr; i++) 517 { 518 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0) 519 { 520 init[i].value = val; 521 init[i].inited = 1; 522 if (strcmp (name,"__image_base__") == 0) 523 set_pe_name (U ("__ImageBase"), val); 524 return; 525 } 526 } 527 abort (); 528} 529 530static void 531set_entry_point (void) 532{ 533 const char *entry; 534 const char *initial_symbol_char; 535 int i; 536 537 static const struct 538 { 539 const int value; 540 const char *entry; 541 } 542 v[] = 543 { 544 { 1, "NtProcessStartup" }, 545 { 2, "WinMainCRTStartup" }, 546 { 3, "mainCRTStartup" }, 547 { 7, "__PosixProcessStartup"}, 548 { 9, "WinMainCRTStartup" }, 549 {14, "mainCRTStartup" }, 550 { 0, NULL } 551 }; 552 553 /* Entry point name for arbitrary subsystem numbers. */ 554 static const char default_entry[] = "mainCRTStartup"; 555 556 if (bfd_link_pic (&link_info) || dll) 557 { 558#if defined (TARGET_IS_i386pe) 559 entry = "DllMainCRTStartup@12"; 560#else 561 entry = "DllMainCRTStartup"; 562#endif 563 } 564 else 565 { 566 for (i = 0; v[i].entry; i++) 567 if (v[i].value == pe_subsystem) 568 break; 569 570 /* If no match, use the default. */ 571 if (v[i].entry != NULL) 572 entry = v[i].entry; 573 else 574 entry = default_entry; 575 } 576 577 initial_symbol_char = (is_underscoring () != 0 ? "_" : ""); 578 579 if (*initial_symbol_char != '\0') 580 { 581 char *alc_entry; 582 583 /* lang_default_entry expects its argument to be permanently 584 allocated, so we don't free this string. */ 585 alc_entry = xmalloc (strlen (initial_symbol_char) 586 + strlen (entry) 587 + 1); 588 strcpy (alc_entry, initial_symbol_char); 589 strcat (alc_entry, entry); 590 entry = alc_entry; 591 } 592 593 lang_default_entry (entry); 594} 595 596static void 597set_pe_subsystem (void) 598{ 599 const char *sver; 600 char *end; 601 int len; 602 int i; 603 unsigned long temp_subsystem; 604 static const struct 605 { 606 const char *name; 607 const int value; 608 } 609 v[] = 610 { 611 { "native", 1}, 612 { "windows", 2}, 613 { "console", 3}, 614 { "posix", 7}, 615 { "wince", 9}, 616 { "xbox", 14}, 617 { NULL, 0 } 618 }; 619 620 /* Check for the presence of a version number. */ 621 sver = strchr (optarg, ':'); 622 if (sver == NULL) 623 len = strlen (optarg); 624 else 625 { 626 len = sver - optarg; 627 set_pe_name ("__major_subsystem_version__", 628 strtoul (sver + 1, &end, 0)); 629 if (*end == '.') 630 set_pe_name ("__minor_subsystem_version__", 631 strtoul (end + 1, &end, 0)); 632 if (*end != '\0') 633 einfo (_("%P: warning: bad version number in -subsystem option\n")); 634 } 635 636 /* Check for numeric subsystem. */ 637 temp_subsystem = strtoul (optarg, & end, 0); 638 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536)) 639 { 640 /* Search list for a numeric match to use its entry point. */ 641 for (i = 0; v[i].name; i++) 642 if (v[i].value == (int) temp_subsystem) 643 break; 644 645 /* Use this subsystem. */ 646 pe_subsystem = (int) temp_subsystem; 647 } 648 else 649 { 650 /* Search for subsystem by name. */ 651 for (i = 0; v[i].name; i++) 652 if (strncmp (optarg, v[i].name, len) == 0 653 && v[i].name[len] == '\0') 654 break; 655 656 if (v[i].name == NULL) 657 { 658 einfo (_("%P%F: invalid subsystem type %s\n"), optarg); 659 return; 660 } 661 662 pe_subsystem = v[i].value; 663 } 664 665 set_pe_name ("__subsystem__", pe_subsystem); 666 667 return; 668} 669 670 671static void 672set_pe_value (char *name) 673{ 674 char *end; 675 676 set_pe_name (name, strtoul (optarg, &end, 0)); 677 678 if (end == optarg) 679 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg); 680 681 optarg = end; 682} 683 684 685static void 686set_pe_stack_heap (char *resname, char *comname) 687{ 688 set_pe_value (resname); 689 690 if (*optarg == ',') 691 { 692 optarg++; 693 set_pe_value (comname); 694 } 695 else if (*optarg) 696 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg); 697} 698 699#define DEFAULT_BUILD_ID_STYLE "md5" 700 701static bfd_boolean 702gld${EMULATION_NAME}_handle_option (int optc) 703{ 704 switch (optc) 705 { 706 default: 707 return FALSE; 708 709 case OPTION_BASE_FILE: 710 link_info.base_file = fopen (optarg, FOPEN_WB); 711 if (link_info.base_file == NULL) 712 einfo (_("%F%P: cannot open base file %s\n"), optarg); 713 break; 714 715 /* PE options. */ 716 case OPTION_HEAP: 717 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); 718 break; 719 case OPTION_STACK: 720 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); 721 break; 722 case OPTION_SUBSYSTEM: 723 set_pe_subsystem (); 724 break; 725 case OPTION_MAJOR_OS_VERSION: 726 set_pe_value ("__major_os_version__"); 727 break; 728 case OPTION_MINOR_OS_VERSION: 729 set_pe_value ("__minor_os_version__"); 730 break; 731 case OPTION_MAJOR_SUBSYSTEM_VERSION: 732 set_pe_value ("__major_subsystem_version__"); 733 break; 734 case OPTION_MINOR_SUBSYSTEM_VERSION: 735 set_pe_value ("__minor_subsystem_version__"); 736 break; 737 case OPTION_MAJOR_IMAGE_VERSION: 738 set_pe_value ("__major_image_version__"); 739 break; 740 case OPTION_MINOR_IMAGE_VERSION: 741 set_pe_value ("__minor_image_version__"); 742 break; 743 case OPTION_FILE_ALIGNMENT: 744 set_pe_value ("__file_alignment__"); 745 break; 746 case OPTION_SECTION_ALIGNMENT: 747 set_pe_value ("__section_alignment__"); 748 break; 749 case OPTION_DLL: 750 set_pe_name ("__dll__", 1); 751 break; 752 case OPTION_IMAGE_BASE: 753 set_pe_value ("__image_base__"); 754 break; 755 case OPTION_SUPPORT_OLD_CODE: 756 support_old_code = 1; 757 break; 758 case OPTION_THUMB_ENTRY: 759 thumb_entry_symbol = optarg; 760 break; 761 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES: 762 pe_use_nul_prefixed_import_tables = TRUE; 763 break; 764 case OPTION_NO_LEADING_UNDERSCORE: 765 pe_leading_underscore = 0; 766 break; 767 case OPTION_LEADING_UNDERSCORE: 768 pe_leading_underscore = 1; 769 break; 770 case OPTION_INSERT_TIMESTAMP: 771 insert_timestamp = TRUE; 772 break; 773 case OPTION_NO_INSERT_TIMESTAMP: 774 insert_timestamp = FALSE; 775 break; 776#ifdef DLL_SUPPORT 777 case OPTION_OUT_DEF: 778 pe_out_def_filename = xstrdup (optarg); 779 break; 780 case OPTION_EXPORT_ALL: 781 pe_dll_export_everything = 1; 782 break; 783 case OPTION_EXCLUDE_SYMBOLS: 784 pe_dll_add_excludes (optarg, EXCLUDESYMS); 785 break; 786 case OPTION_EXCLUDE_ALL_SYMBOLS: 787 pe_dll_exclude_all_symbols = 1; 788 break; 789 case OPTION_EXCLUDE_LIBS: 790 pe_dll_add_excludes (optarg, EXCLUDELIBS); 791 break; 792 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB: 793 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB); 794 break; 795 case OPTION_KILL_ATS: 796 pe_dll_kill_ats = 1; 797 break; 798 case OPTION_STDCALL_ALIASES: 799 pe_dll_stdcall_aliases = 1; 800 break; 801 case OPTION_ENABLE_STDCALL_FIXUP: 802 pe_enable_stdcall_fixup = 1; 803 break; 804 case OPTION_DISABLE_STDCALL_FIXUP: 805 pe_enable_stdcall_fixup = 0; 806 break; 807 case OPTION_IMPLIB_FILENAME: 808 pe_implib_filename = xstrdup (optarg); 809 break; 810 case OPTION_WARN_DUPLICATE_EXPORTS: 811 pe_dll_warn_dup_exports = 1; 812 break; 813 case OPTION_IMP_COMPAT: 814 pe_dll_compat_implib = 1; 815 break; 816 case OPTION_ENABLE_AUTO_IMAGE_BASE: 817 pe_enable_auto_image_base = 1; 818 if (optarg && *optarg) 819 { 820 char *end; 821 pe_auto_image_base = strtoul (optarg, &end, 0); 822 /* XXX should check that we actually parsed something */ 823 } 824 break; 825 case OPTION_DISABLE_AUTO_IMAGE_BASE: 826 pe_enable_auto_image_base = 0; 827 break; 828 case OPTION_DLL_SEARCH_PREFIX: 829 pe_dll_search_prefix = xstrdup (optarg); 830 break; 831 case OPTION_NO_DEFAULT_EXCLUDES: 832 pe_dll_do_default_excludes = 0; 833 break; 834 case OPTION_DLL_ENABLE_AUTO_IMPORT: 835 link_info.pei386_auto_import = 1; 836 break; 837 case OPTION_DLL_DISABLE_AUTO_IMPORT: 838 link_info.pei386_auto_import = 0; 839 break; 840 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC: 841 link_info.pei386_runtime_pseudo_reloc = 842 DEFAULT_PSEUDO_RELOC_VERSION; 843 break; 844 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1: 845 link_info.pei386_runtime_pseudo_reloc = 1; 846 break; 847 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2: 848 link_info.pei386_runtime_pseudo_reloc = 2; 849 break; 850 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC: 851 link_info.pei386_runtime_pseudo_reloc = 0; 852 break; 853 case OPTION_ENABLE_EXTRA_PE_DEBUG: 854 pe_dll_extra_pe_debug = 1; 855 break; 856#endif 857 case OPTION_LARGE_ADDRESS_AWARE: 858 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; 859 break; 860 case OPTION_DISABLE_LARGE_ADDRESS_AWARE: 861 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE; 862 break; 863 case OPTION_ENABLE_LONG_SECTION_NAMES: 864 pe_use_coff_long_section_names = 1; 865 break; 866 case OPTION_DISABLE_LONG_SECTION_NAMES: 867 pe_use_coff_long_section_names = 0; 868 break; 869/* Get DLLCharacteristics bits */ 870 case OPTION_DYNAMIC_BASE: 871 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE; 872 break; 873 case OPTION_FORCE_INTEGRITY: 874 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY; 875 break; 876 case OPTION_NX_COMPAT: 877 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT; 878 break; 879 case OPTION_NO_ISOLATION: 880 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION; 881 break; 882 case OPTION_NO_SEH: 883 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH; 884 break; 885 case OPTION_NO_BIND: 886 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND; 887 break; 888 case OPTION_WDM_DRIVER: 889 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER; 890 break; 891 case OPTION_TERMINAL_SERVER_AWARE: 892 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE; 893 break; 894 case OPTION_BUILD_ID: 895 if (emit_build_id != NULL) 896 { 897 free ((char *) emit_build_id); 898 emit_build_id = NULL; 899 } 900 if (optarg == NULL) 901 optarg = DEFAULT_BUILD_ID_STYLE; 902 if (strcmp (optarg, "none")) 903 emit_build_id = xstrdup (optarg); 904 break; 905 } 906 907 /* Set DLLCharacteristics bits */ 908 set_pe_name ("__dll_characteristics__", pe_dll_characteristics); 909 910 return TRUE; 911} 912 913 914#ifdef DLL_SUPPORT 915static unsigned long 916strhash (const char *str) 917{ 918 const unsigned char *s; 919 unsigned long hash; 920 unsigned int c; 921 unsigned int len; 922 923 hash = 0; 924 len = 0; 925 s = (const unsigned char *) str; 926 while ((c = *s++) != '\0') 927 { 928 hash += c + (c << 17); 929 hash ^= hash >> 2; 930 ++len; 931 } 932 hash += len + (len << 17); 933 hash ^= hash >> 2; 934 935 return hash; 936} 937 938/* Use the output file to create a image base for relocatable DLLs. */ 939 940static unsigned long 941compute_dll_image_base (const char *ofile) 942{ 943 unsigned long hash = strhash (ofile); 944 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000); 945} 946#endif 947 948/* Assign values to the special symbols before the linker script is 949 read. */ 950 951static void 952gld_${EMULATION_NAME}_set_symbols (void) 953{ 954 /* Run through and invent symbols for all the 955 names and insert the defaults. */ 956 int j; 957 958 is_underscoring (); 959 960 if (!init[IMAGEBASEOFF].inited) 961 { 962 if (bfd_link_relocatable (&link_info)) 963 init[IMAGEBASEOFF].value = 0; 964 else if (init[DLLOFF].value || bfd_link_dll (&link_info)) 965 { 966#ifdef DLL_SUPPORT 967 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base 968 ? compute_dll_image_base (output_filename) 969 : NT_DLL_IMAGE_BASE); 970#else 971 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; 972#endif 973 } 974 else 975 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; 976 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value; 977 } 978 979 /* Don't do any symbol assignments if this is a relocatable link. */ 980 if (bfd_link_relocatable (&link_info)) 981 return; 982 983 /* Glue the assignments into the abs section. */ 984 push_stat_ptr (&abs_output_section->children); 985 986 for (j = 0; init[j].ptr; j++) 987 { 988 long val = init[j].value; 989 lang_assignment_statement_type *rv; 990 991 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j), 992 exp_intop (val), FALSE)); 993 if (init[j].size == sizeof (short)) 994 *(short *) init[j].ptr = val; 995 else if (init[j].size == sizeof (int)) 996 *(int *) init[j].ptr = val; 997 else if (init[j].size == sizeof (long)) 998 *(long *) init[j].ptr = val; 999 /* This might be a long long or other special type. */ 1000 else if (init[j].size == sizeof (bfd_vma)) 1001 *(bfd_vma *) init[j].ptr = val; 1002 else abort (); 1003 if (j == IMAGEBASEOFF) 1004 image_base_statement = rv; 1005 } 1006 /* Restore the pointer. */ 1007 pop_stat_ptr (); 1008 1009 if (pe.FileAlignment > pe.SectionAlignment) 1010 { 1011 einfo (_("%P: warning, file alignment > section alignment.\n")); 1012 } 1013} 1014 1015/* This is called after the linker script and the command line options 1016 have been read. */ 1017 1018static void 1019gld_${EMULATION_NAME}_after_parse (void) 1020{ 1021 /* PR ld/6744: Warn the user if they have used an ELF-only 1022 option hoping it will work on PE. */ 1023 if (link_info.export_dynamic) 1024 einfo (_("%P: warning: --export-dynamic is not supported for PE " 1025 "targets, did you mean --export-all-symbols?\n")); 1026 1027 set_entry_point (); 1028 1029 after_parse_default (); 1030} 1031 1032/* pe-dll.c directly accesses pe_data_import_dll, 1033 so it must be defined outside of #ifdef DLL_SUPPORT. 1034 Note - this variable is deliberately not initialised. 1035 This allows it to be treated as a common varaible, and only 1036 exist in one incarnation in a multiple target enabled linker. */ 1037char * pe_data_import_dll; 1038 1039#ifdef DLL_SUPPORT 1040static struct bfd_link_hash_entry *pe_undef_found_sym; 1041 1042static bfd_boolean 1043pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf) 1044{ 1045 int sl; 1046 char *string = inf; 1047 const char *hs = h->root.string; 1048 1049 sl = strlen (string); 1050 if (h->type == bfd_link_hash_defined 1051 && ((*hs == '@' && *string == '_' 1052 && strncmp (hs + 1, string + 1, sl - 1) == 0) 1053 || strncmp (hs, string, sl) == 0) 1054 && h->root.string[sl] == '@') 1055 { 1056 pe_undef_found_sym = h; 1057 return FALSE; 1058 } 1059 return TRUE; 1060} 1061 1062/* Change UNDEF to a defined symbol, taking data from SYM. */ 1063 1064static void 1065change_undef (struct bfd_link_hash_entry * undef, 1066 struct bfd_link_hash_entry * sym) 1067{ 1068 static bfd_boolean gave_warning_message = FALSE; 1069 1070 undef->type = bfd_link_hash_defined; 1071 undef->u.def.value = sym->u.def.value; 1072 undef->u.def.section = sym->u.def.section; 1073 1074 if (pe_enable_stdcall_fixup == -1) 1075 { 1076 einfo (_("Warning: resolving %s by linking to %s\n"), 1077 undef->root.string, sym->root.string); 1078 1079 if (! gave_warning_message) 1080 { 1081 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); 1082 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); 1083 gave_warning_message = TRUE; 1084 } 1085 } 1086 1087 /* PR 19803: Make sure that the linked symbol is not garbage collected. */ 1088 lang_add_gc_name (sym->root.string); 1089} 1090 1091static void 1092pe_fixup_stdcalls (void) 1093{ 1094 struct bfd_link_hash_entry *undef, *sym; 1095 1096 if (pe_dll_extra_pe_debug) 1097 printf ("%s\n", __FUNCTION__); 1098 1099 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) 1100 if (undef->type == bfd_link_hash_undefined) 1101 { 1102 const char * name = undef->root.string; 1103 char * at; 1104 int lead_at = (*name == '@'); 1105 1106 if (lead_at) 1107 at = strchr (name + 1, '@'); 1108 else 1109 at = strchr (name, '@'); 1110 1111 if (at || lead_at) 1112 { 1113 /* The symbol is a stdcall symbol, so let's look for a 1114 cdecl symbol with the same name and resolve to that. */ 1115 char *cname = xstrdup (name); 1116 1117 if (lead_at) 1118 *cname = '_'; 1119 if (at) 1120 * strchr (cname, '@') = 0; 1121 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE); 1122 1123 if (sym && sym->type == bfd_link_hash_defined) 1124 change_undef (undef, sym); 1125 } 1126 else 1127 { 1128 /* The symbol is a cdecl symbol, so we look for stdcall 1129 symbols - which means scanning the whole symbol table. */ 1130 pe_undef_found_sym = NULL; 1131 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match, 1132 (char *) name); 1133 if (pe_undef_found_sym) 1134 change_undef (undef, pe_undef_found_sym); 1135 } 1136 } 1137} 1138 1139static int 1140make_import_fixup (arelent *rel, asection *s) 1141{ 1142 struct bfd_symbol *sym = *rel->sym_ptr_ptr; 1143 char addend[4]; 1144 1145 if (pe_dll_extra_pe_debug) 1146 printf ("arelent: %s@%#lx: add=%li\n", sym->name, 1147 (unsigned long) rel->address, (long) rel->addend); 1148 1149 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend))) 1150 einfo (_("%C: Cannot get section contents - auto-import exception\n"), 1151 s->owner, s, rel->address); 1152 1153 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend)); 1154 1155 return 1; 1156} 1157 1158static void 1159pe_find_data_imports (void) 1160{ 1161 struct bfd_link_hash_entry *undef, *sym; 1162 1163 if (link_info.pei386_auto_import == 0) 1164 return; 1165 1166 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) 1167 { 1168 if (undef->type == bfd_link_hash_undefined) 1169 { 1170 /* C++ symbols are *long*. */ 1171#define BUF_SIZE 4096 1172 char buf[BUF_SIZE]; 1173 1174 if (pe_dll_extra_pe_debug) 1175 printf ("%s:%s\n", __FUNCTION__, undef->root.string); 1176 1177 if (strlen (undef->root.string) > (BUF_SIZE - 6)) 1178 { 1179 /* PR linker/18466. */ 1180 einfo (_("%P: internal error: symbol too long: %s\n"), 1181 undef->root.string); 1182 return; 1183 } 1184 1185 sprintf (buf, "__imp_%s", undef->root.string); 1186 1187 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); 1188 1189 if (sym && sym->type == bfd_link_hash_defined) 1190 { 1191 bfd *b = sym->u.def.section->owner; 1192 asymbol **symbols; 1193 int nsyms, i; 1194 1195 if (link_info.pei386_auto_import == -1) 1196 { 1197 static bfd_boolean warned = FALSE; 1198 1199 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"), 1200 undef->root.string, buf); 1201 1202 /* PR linker/4844. */ 1203 if (! warned) 1204 { 1205 warned = TRUE; 1206 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\ 1207This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n")); 1208 } 1209 } 1210 1211 if (!bfd_generic_link_read_symbols (b)) 1212 { 1213 einfo (_("%B%F: could not read symbols: %E\n"), b); 1214 return; 1215 } 1216 1217 symbols = bfd_get_outsymbols (b); 1218 nsyms = bfd_get_symcount (b); 1219 1220 for (i = 0; i < nsyms; i++) 1221 { 1222 if (! CONST_STRNEQ (symbols[i]->name, 1223 U ("_head_"))) 1224 continue; 1225 1226 if (pe_dll_extra_pe_debug) 1227 printf ("->%s\n", symbols[i]->name); 1228 1229 pe_data_import_dll = (char *) (symbols[i]->name 1230 + U_SIZE ("_head_") - 1); 1231 break; 1232 } 1233 1234 pe_walk_relocs_of_symbol (&link_info, undef->root.string, 1235 make_import_fixup); 1236 1237 /* Let's differentiate it somehow from defined. */ 1238 undef->type = bfd_link_hash_defweak; 1239 /* We replace original name with __imp_ prefixed, this 1240 1) may trash memory 2) leads to duplicate symbol generation. 1241 Still, IMHO it's better than having name poluted. */ 1242 undef->root.string = sym->root.string; 1243 undef->u.def.value = sym->u.def.value; 1244 undef->u.def.section = sym->u.def.section; 1245 } 1246 } 1247 } 1248} 1249 1250static bfd_boolean 1251pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED) 1252{ 1253 printf ("+%s\n", h->string); 1254 1255 return TRUE; 1256} 1257#endif /* DLL_SUPPORT */ 1258 1259static void 1260debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj) 1261{ 1262 int *found = (int *) obj; 1263 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0) 1264 *found = 1; 1265} 1266 1267static bfd_boolean 1268pecoff_checksum_contents (bfd *abfd, 1269 void (*process) (const void *, size_t, void *), 1270 void *arg) 1271{ 1272 file_ptr filepos = (file_ptr) 0; 1273 1274 while (1) 1275 { 1276 unsigned char b; 1277 int status; 1278 1279 if (bfd_seek (abfd, filepos, SEEK_SET) != 0) 1280 return 0; 1281 1282 status = bfd_bread (&b, (bfd_size_type) 1, abfd); 1283 if (status < 1) 1284 { 1285 break; 1286 } 1287 1288 (*process) (&b, 1, arg); 1289 filepos += 1; 1290 } 1291 1292 return TRUE; 1293} 1294 1295static bfd_boolean 1296write_build_id (bfd *abfd) 1297{ 1298 struct pe_tdata *t = pe_data (abfd); 1299 asection *asec; 1300 struct bfd_link_order *link_order = NULL; 1301 unsigned char *contents; 1302 bfd_size_type size; 1303 bfd_size_type build_id_size; 1304 unsigned char *build_id; 1305 1306 /* Find the section the .buildid output section has been merged info. */ 1307 for (asec = abfd->sections; asec != NULL; asec = asec->next) 1308 { 1309 struct bfd_link_order *l = NULL; 1310 for (l = asec->map_head.link_order; l != NULL; l = l->next) 1311 { 1312 if (l->type == bfd_indirect_link_order) 1313 { 1314 if (l->u.indirect.section == t->build_id.sec) 1315 { 1316 link_order = l; 1317 break; 1318 } 1319 } 1320 } 1321 1322 if (link_order) 1323 break; 1324 } 1325 1326 if (!link_order) 1327 { 1328 einfo (_("%P: warning: .buildid section discarded," 1329 " --build-id ignored.\n")); 1330 return TRUE; 1331 } 1332 1333 const char * pdb_name = _bfd_XXi_get_codeview_pdb_name (abfd); 1334 unsigned int pdb_name_length = strlen(pdb_name); 1335 1336 if (t->build_id.sec->contents == NULL) 1337 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); 1338 contents = t->build_id.sec->contents; 1339 size = t->build_id.sec->size; 1340 1341 build_id_size = compute_build_id_size (t->build_id.style); 1342 build_id = xmalloc (build_id_size); 1343 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size); 1344 1345 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase; 1346 1347 /* Construct a debug directory entry which points to an immediately following CodeView record. */ 1348 struct internal_IMAGE_DEBUG_DIRECTORY idd; 1349 idd.Characteristics = 0; 1350 idd.TimeDateStamp = 0; 1351 idd.MajorVersion = 0; 1352 idd.MinorVersion = 0; 1353 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW; 1354 idd.SizeOfData = sizeof (CV_INFO_PDB70) + pdb_name_length + 1; 1355 idd.AddressOfRawData = asec->vma - ib + link_order->offset 1356 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1357 idd.PointerToRawData = asec->filepos + link_order->offset 1358 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1359 1360 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents; 1361 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext); 1362 1363 /* Write the debug directory entry. */ 1364 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) 1365 return 0; 1366 1367 if (bfd_bwrite (contents, size, abfd) != size) 1368 return 0; 1369 1370 /* Construct the CodeView record. */ 1371 CODEVIEW_INFO cvinfo; 1372 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE; 1373 cvinfo.Age = 1; 1374 1375 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */ 1376 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH); 1377 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH) 1378 ? CV_INFO_SIGNATURE_LENGTH : build_id_size); 1379 1380 free (build_id); 1381 1382 /* Write the codeview record. */ 1383 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0) 1384 return 0; 1385 1386 /* Record the location of the debug directory in the data directory. */ 1387 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress 1388 = asec->vma - ib + link_order->offset; 1389 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size 1390 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1391 1392 return TRUE; 1393} 1394 1395/* Make .buildid section, and set up coff_tdata->build_id. */ 1396static bfd_boolean 1397setup_build_id (bfd *ibfd) 1398{ 1399 asection *s; 1400 flagword flags; 1401 1402 if (!validate_build_id_style (emit_build_id)) 1403 { 1404 einfo ("%P: warning: unrecognized --build-id style ignored.\n"); 1405 return FALSE; 1406 } 1407 1408 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY 1409 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA); 1410 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags); 1411 if (s != NULL) 1412 { 1413 struct pe_tdata *t = pe_data (link_info.output_bfd); 1414 t->build_id.after_write_object_contents = &write_build_id; 1415 t->build_id.style = emit_build_id; 1416 t->build_id.sec = s; 1417 1418 /* Section is a variable size: 1419 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW, 1420 pointing at a CV_INFO_PDB70 record containing the build-id, with a 1421 null terminated string for PdbFileName. */ 1422 1423 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY) 1424 + sizeof (CV_INFO_PDB70) + strlen(_bfd_XXi_get_codeview_pdb_name(link_info.output_bfd)) + 1; 1425 1426 return TRUE; 1427 } 1428 1429 einfo ("%P: warning: Cannot create .buildid section," 1430 " --build-id ignored.\n"); 1431 return FALSE; 1432} 1433 1434static void 1435gld_${EMULATION_NAME}_after_open (void) 1436{ 1437 after_open_default (); 1438 1439#ifdef DLL_SUPPORT 1440 if (pe_dll_extra_pe_debug) 1441 { 1442 bfd *a; 1443 struct bfd_link_hash_entry *sym; 1444 1445 printf ("%s()\n", __FUNCTION__); 1446 1447 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) 1448 printf ("-%s\n", sym->root.string); 1449 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); 1450 1451 for (a = link_info.input_bfds; a; a = a->link.next) 1452 printf ("*%s\n",a->filename); 1453 } 1454#endif 1455 1456 if (emit_build_id != NULL) 1457 { 1458 bfd *abfd; 1459 1460 /* Find a COFF input. */ 1461 for (abfd = link_info.input_bfds; 1462 abfd != (bfd *) NULL; abfd = abfd->link.next) 1463 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) 1464 break; 1465 1466 /* If there are no COFF input files do not try to 1467 add a build-id section. */ 1468 if (abfd == NULL 1469 || !setup_build_id (abfd)) 1470 { 1471 free ((char *) emit_build_id); 1472 emit_build_id = NULL; 1473 } 1474 } 1475 1476 /* Pass the wacky PE command line options into the output bfd. 1477 FIXME: This should be done via a function, rather than by 1478 including an internal BFD header. */ 1479 1480 if (coff_data (link_info.output_bfd) == NULL 1481 || coff_data (link_info.output_bfd)->pe == 0) 1482 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), 1483 link_info.output_bfd); 1484 1485 pe_data (link_info.output_bfd)->pe_opthdr = pe; 1486 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value; 1487 pe_data (link_info.output_bfd)->real_flags |= real_flags; 1488 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp; 1489 1490 /* At this point we must decide whether to use long section names 1491 in the output or not. If the user hasn't explicitly specified 1492 on the command line, we leave it to the default for the format 1493 (object files yes, image files no), except if there is debug 1494 information present; GDB relies on the long section names to 1495 find it, so enable it in that case. */ 1496 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none) 1497 { 1498 if (bfd_link_relocatable (&link_info)) 1499 pe_use_coff_long_section_names = 1; 1500 else 1501 { 1502 /* Iterate over all sections of all input BFDs, checking 1503 for any that begin 'debug_' and are long names. */ 1504 LANG_FOR_EACH_INPUT_STATEMENT (is) 1505 { 1506 int found_debug = 0; 1507 1508 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug); 1509 if (found_debug) 1510 { 1511 pe_use_coff_long_section_names = 1; 1512 break; 1513 } 1514 } 1515 } 1516 } 1517 1518 pe_output_file_set_long_section_names (link_info.output_bfd); 1519 1520#ifdef DLL_SUPPORT 1521 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1522 pe_fixup_stdcalls (); 1523 1524 pe_process_import_defs (link_info.output_bfd, &link_info); 1525 1526 pe_find_data_imports (); 1527 1528 /* As possibly new symbols are added by imports, we rerun 1529 stdcall/fastcall fixup here. */ 1530 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1531 pe_fixup_stdcalls (); 1532 1533#if defined (TARGET_IS_i386pe) \ 1534 || defined (TARGET_IS_armpe) \ 1535 || defined (TARGET_IS_arm_epoc_pe) \ 1536 || defined (TARGET_IS_arm_wince_pe) 1537 if (!bfd_link_relocatable (&link_info)) 1538 pe_dll_build_sections (link_info.output_bfd, &link_info); 1539#else 1540 if (bfd_link_pic (&link_info)) 1541 pe_dll_build_sections (link_info.output_bfd, &link_info); 1542 else 1543 pe_exe_build_sections (link_info.output_bfd, &link_info); 1544#endif 1545#endif /* DLL_SUPPORT */ 1546 1547#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 1548 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) 1549 { 1550 /* The arm backend needs special fields in the output hash structure. 1551 These will only be created if the output format is an arm format, 1552 hence we do not support linking and changing output formats at the 1553 same time. Use a link followed by objcopy to change output formats. */ 1554 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); 1555 return; 1556 } 1557 { 1558 /* Find a BFD that can hold the interworking stubs. */ 1559 LANG_FOR_EACH_INPUT_STATEMENT (is) 1560 { 1561 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) 1562 break; 1563 } 1564 } 1565#endif 1566 1567 { 1568 /* This next chunk of code tries to detect the case where you have 1569 two import libraries for the same DLL (specifically, 1570 symbolically linking libm.a and libc.a in cygwin to 1571 libcygwin.a). In those cases, it's possible for function 1572 thunks from the second implib to be used but without the 1573 head/tail objects, causing an improper import table. We detect 1574 those cases and rename the "other" import libraries to match 1575 the one the head/tail come from, so that the linker will sort 1576 things nicely and produce a valid import table. */ 1577 1578 LANG_FOR_EACH_INPUT_STATEMENT (is) 1579 { 1580 if (is->the_bfd->my_archive) 1581 { 1582 int idata2 = 0, reloc_count=0, is_imp = 0; 1583 asection *sec; 1584 1585 /* See if this is an import library thunk. */ 1586 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1587 { 1588 if (strcmp (sec->name, ".idata\$2") == 0) 1589 idata2 = 1; 1590 if (CONST_STRNEQ (sec->name, ".idata\$")) 1591 is_imp = 1; 1592 reloc_count += sec->reloc_count; 1593 } 1594 1595 if (is_imp && !idata2 && reloc_count) 1596 { 1597 /* It is, look for the reference to head and see if it's 1598 from our own library. */ 1599 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1600 { 1601 int i; 1602 long relsize; 1603 asymbol **symbols; 1604 arelent **relocs; 1605 int nrelocs; 1606 1607 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); 1608 if (relsize < 1) 1609 break; 1610 1611 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1612 { 1613 einfo (_("%B%F: could not read symbols: %E\n"), 1614 is->the_bfd); 1615 return; 1616 } 1617 symbols = bfd_get_outsymbols (is->the_bfd); 1618 1619 relocs = xmalloc ((size_t) relsize); 1620 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, 1621 relocs, symbols); 1622 if (nrelocs < 0) 1623 { 1624 free (relocs); 1625 einfo ("%X%P: unable to process relocs: %E\n"); 1626 return; 1627 } 1628 1629 for (i = 0; i < nrelocs; i++) 1630 { 1631 struct bfd_symbol *s; 1632 struct bfd_link_hash_entry * blhe; 1633 char *other_bfd_filename; 1634 char *n; 1635 1636 s = (relocs[i]->sym_ptr_ptr)[0]; 1637 1638 if (s->flags & BSF_LOCAL) 1639 continue; 1640 1641 /* Thunk section with reloc to another bfd. */ 1642 blhe = bfd_link_hash_lookup (link_info.hash, 1643 s->name, 1644 FALSE, FALSE, TRUE); 1645 1646 if (blhe == NULL 1647 || blhe->type != bfd_link_hash_defined) 1648 continue; 1649 1650 other_bfd_filename 1651 = blhe->u.def.section->owner->my_archive 1652 ? bfd_get_filename (blhe->u.def.section->owner->my_archive) 1653 : bfd_get_filename (blhe->u.def.section->owner); 1654 1655 if (filename_cmp (bfd_get_filename 1656 (is->the_bfd->my_archive), 1657 other_bfd_filename) == 0) 1658 continue; 1659 1660 /* Rename this implib to match the other one. */ 1661 n = xmalloc (strlen (other_bfd_filename) + 1); 1662 strcpy (n, other_bfd_filename); 1663 is->the_bfd->my_archive->filename = n; 1664 } 1665 1666 free (relocs); 1667 /* Note - we do not free the symbols, 1668 they are now cached in the BFD. */ 1669 } 1670 } 1671 } 1672 } 1673 } 1674 1675 { 1676 int is_ms_arch = 0; 1677 bfd *cur_arch = 0; 1678 lang_input_statement_type *is2; 1679 lang_input_statement_type *is3; 1680 1681 /* Careful - this is a shell script. Watch those dollar signs! */ 1682 /* Microsoft import libraries have every member named the same, 1683 and not in the right order for us to link them correctly. We 1684 must detect these and rename the members so that they'll link 1685 correctly. There are three types of objects: the head, the 1686 thunks, and the sentinel(s). The head is easy; it's the one 1687 with idata2. We assume that the sentinels won't have relocs, 1688 and the thunks will. It's easier than checking the symbol 1689 table for external references. */ 1690 LANG_FOR_EACH_INPUT_STATEMENT (is) 1691 { 1692 if (is->the_bfd->my_archive) 1693 { 1694 char *pnt; 1695 bfd *arch = is->the_bfd->my_archive; 1696 1697 if (cur_arch != arch) 1698 { 1699 cur_arch = arch; 1700 is_ms_arch = 1; 1701 1702 for (is3 = is; 1703 is3 && is3->the_bfd->my_archive == arch; 1704 is3 = (lang_input_statement_type *) is3->next) 1705 { 1706 /* A MS dynamic import library can also contain static 1707 members, so look for the first element with a .dll 1708 extension, and use that for the remainder of the 1709 comparisons. */ 1710 pnt = strrchr (is3->the_bfd->filename, '.'); 1711 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0) 1712 break; 1713 } 1714 1715 if (is3 == NULL) 1716 is_ms_arch = 0; 1717 else 1718 { 1719 /* OK, found one. Now look to see if the remaining 1720 (dynamic import) members use the same name. */ 1721 for (is2 = is; 1722 is2 && is2->the_bfd->my_archive == arch; 1723 is2 = (lang_input_statement_type *) is2->next) 1724 { 1725 /* Skip static members, ie anything with a .obj 1726 extension. */ 1727 pnt = strrchr (is2->the_bfd->filename, '.'); 1728 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0) 1729 continue; 1730 1731 if (filename_cmp (is3->the_bfd->filename, 1732 is2->the_bfd->filename)) 1733 { 1734 is_ms_arch = 0; 1735 break; 1736 } 1737 } 1738 } 1739 } 1740 1741 /* This fragment might have come from an .obj file in a Microsoft 1742 import, and not an actual import record. If this is the case, 1743 then leave the filename alone. */ 1744 pnt = strrchr (is->the_bfd->filename, '.'); 1745 1746 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0)) 1747 { 1748 int idata2 = 0, reloc_count=0; 1749 asection *sec; 1750 char *new_name, seq; 1751 1752 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1753 { 1754 if (strcmp (sec->name, ".idata\$2") == 0) 1755 idata2 = 1; 1756 reloc_count += sec->reloc_count; 1757 } 1758 1759 if (idata2) /* .idata2 is the TOC */ 1760 seq = 'a'; 1761 else if (reloc_count > 0) /* thunks */ 1762 seq = 'b'; 1763 else /* sentinel */ 1764 seq = 'c'; 1765 1766 new_name = xmalloc (strlen (is->the_bfd->filename) + 3); 1767 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); 1768 is->the_bfd->filename = new_name; 1769 1770 new_name = xmalloc (strlen (is->filename) + 3); 1771 sprintf (new_name, "%s.%c", is->filename, seq); 1772 is->filename = new_name; 1773 } 1774 } 1775 } 1776 } 1777 1778 { 1779 /* The following chunk of code tries to identify jump stubs in 1780 import libraries which are dead code and eliminates them 1781 from the final link. For each exported symbol <sym>, there 1782 is a object file in the import library with a .text section 1783 and several .idata\$* sections. The .text section contains the 1784 symbol definition for <sym> which is a jump stub of the form 1785 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition 1786 for __imp_<sym> which is the address of the slot for <sym> in 1787 the import address table. When a symbol is imported explicitly 1788 using __declspec(dllimport) declaration, the compiler generates 1789 a reference to __imp_<sym> which directly resolves to the 1790 symbol in .idata\$5, in which case the jump stub code is not 1791 needed. The following code tries to identify jump stub sections 1792 in import libraries which are not referred to by anyone and 1793 marks them for exclusion from the final link. */ 1794 LANG_FOR_EACH_INPUT_STATEMENT (is) 1795 { 1796 if (is->the_bfd->my_archive) 1797 { 1798 int is_imp = 0; 1799 asection *sec, *stub_sec = NULL; 1800 1801 /* See if this is an import library thunk. */ 1802 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1803 { 1804 if (strncmp (sec->name, ".idata\$", 7) == 0) 1805 is_imp = 1; 1806 /* The section containing the jmp stub has code 1807 and has a reloc. */ 1808 if ((sec->flags & SEC_CODE) && sec->reloc_count) 1809 stub_sec = sec; 1810 } 1811 1812 if (is_imp && stub_sec) 1813 { 1814 asymbol **symbols; 1815 long nsyms, src_count; 1816 struct bfd_link_hash_entry * blhe; 1817 1818 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1819 { 1820 einfo (_("%B%F: could not read symbols: %E\n"), 1821 is->the_bfd); 1822 return; 1823 } 1824 symbols = bfd_get_outsymbols (is->the_bfd); 1825 nsyms = bfd_get_symcount (is->the_bfd); 1826 1827 for (src_count = 0; src_count < nsyms; src_count++) 1828 { 1829 if (symbols[src_count]->section->id == stub_sec->id) 1830 { 1831 /* This symbol belongs to the section containing 1832 the stub. */ 1833 blhe = bfd_link_hash_lookup (link_info.hash, 1834 symbols[src_count]->name, 1835 FALSE, FALSE, TRUE); 1836 /* If the symbol in the stub section has no other 1837 undefined references, exclude the stub section 1838 from the final link. */ 1839 if (blhe != NULL 1840 && blhe->type == bfd_link_hash_defined 1841 && blhe->u.undef.next == NULL 1842 && blhe != link_info.hash->undefs_tail) 1843 stub_sec->flags |= SEC_EXCLUDE; 1844 } 1845 } 1846 } 1847 } 1848 } 1849 } 1850} 1851 1852static void 1853gld_${EMULATION_NAME}_before_allocation (void) 1854{ 1855#ifdef TARGET_IS_ppcpe 1856 /* Here we rummage through the found bfds to collect toc information. */ 1857 { 1858 LANG_FOR_EACH_INPUT_STATEMENT (is) 1859 { 1860 if (!ppc_process_before_allocation (is->the_bfd, &link_info)) 1861 { 1862 /* xgettext:c-format */ 1863 einfo (_("Errors encountered processing file %s\n"), is->filename); 1864 } 1865 } 1866 } 1867 1868 /* We have seen it all. Allocate it, and carry on. */ 1869 ppc_allocate_toc_section (&link_info); 1870#endif /* TARGET_IS_ppcpe */ 1871 1872#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 1873 /* FIXME: we should be able to set the size of the interworking stub 1874 section. 1875 1876 Here we rummage through the found bfds to collect glue 1877 information. FIXME: should this be based on a command line 1878 option? krk@cygnus.com. */ 1879 { 1880 LANG_FOR_EACH_INPUT_STATEMENT (is) 1881 { 1882 if (! bfd_arm_process_before_allocation 1883 (is->the_bfd, & link_info, support_old_code)) 1884 { 1885 /* xgettext:c-format */ 1886 einfo (_("Errors encountered processing file %s for interworking\n"), 1887 is->filename); 1888 } 1889 } 1890 } 1891 1892 /* We have seen it all. Allocate it, and carry on. */ 1893 bfd_arm_allocate_interworking_sections (& link_info); 1894#endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */ 1895 1896 before_allocation_default (); 1897} 1898 1899#ifdef DLL_SUPPORT 1900/* This is called when an input file isn't recognized as a BFD. We 1901 check here for .DEF files and pull them in automatically. */ 1902 1903static int 1904saw_option (char *option) 1905{ 1906 int i; 1907 1908 for (i = 0; init[i].ptr; i++) 1909 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0) 1910 return init[i].inited; 1911 return 0; 1912} 1913#endif /* DLL_SUPPORT */ 1914 1915static bfd_boolean 1916gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1917{ 1918#ifdef DLL_SUPPORT 1919 const char *ext = entry->filename + strlen (entry->filename) - 4; 1920 1921 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0) 1922 { 1923 pe_def_file = def_file_parse (entry->filename, pe_def_file); 1924 1925 if (pe_def_file) 1926 { 1927 int i, buflen=0, len; 1928 char *buf; 1929 1930 for (i = 0; i < pe_def_file->num_exports; i++) 1931 { 1932 len = strlen (pe_def_file->exports[i].internal_name); 1933 if (buflen < len + 2) 1934 buflen = len + 2; 1935 } 1936 1937 buf = xmalloc (buflen); 1938 1939 for (i = 0; i < pe_def_file->num_exports; i++) 1940 { 1941 struct bfd_link_hash_entry *h; 1942 1943 sprintf (buf, "%s%s", U (""), 1944 pe_def_file->exports[i].internal_name); 1945 1946 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); 1947 if (h == (struct bfd_link_hash_entry *) NULL) 1948 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); 1949 if (h->type == bfd_link_hash_new) 1950 { 1951 h->type = bfd_link_hash_undefined; 1952 h->u.undef.abfd = NULL; 1953 bfd_link_add_undef (link_info.hash, h); 1954 } 1955 } 1956 free (buf); 1957 1958 /* def_file_print (stdout, pe_def_file); */ 1959 if (pe_def_file->is_dll == 1) 1960 link_info.type = type_dll; 1961 1962 if (pe_def_file->base_address != (bfd_vma)(-1)) 1963 { 1964 pe.ImageBase 1965 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase 1966 = init[IMAGEBASEOFF].value 1967 = pe_def_file->base_address; 1968 init[IMAGEBASEOFF].inited = 1; 1969 if (image_base_statement) 1970 image_base_statement->exp 1971 = exp_assign ("__image_base__", exp_intop (pe.ImageBase), 1972 FALSE); 1973 } 1974 1975 if (pe_def_file->stack_reserve != -1 1976 && ! saw_option ("__size_of_stack_reserve__")) 1977 { 1978 pe.SizeOfStackReserve = pe_def_file->stack_reserve; 1979 if (pe_def_file->stack_commit != -1) 1980 pe.SizeOfStackCommit = pe_def_file->stack_commit; 1981 } 1982 if (pe_def_file->heap_reserve != -1 1983 && ! saw_option ("__size_of_heap_reserve__")) 1984 { 1985 pe.SizeOfHeapReserve = pe_def_file->heap_reserve; 1986 if (pe_def_file->heap_commit != -1) 1987 pe.SizeOfHeapCommit = pe_def_file->heap_commit; 1988 } 1989 return TRUE; 1990 } 1991 } 1992#endif 1993 return FALSE; 1994} 1995 1996static bfd_boolean 1997gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1998{ 1999#ifdef DLL_SUPPORT 2000#ifdef TARGET_IS_i386pe 2001 pe_dll_id_target ("pei-i386"); 2002#endif 2003#ifdef TARGET_IS_shpe 2004 pe_dll_id_target ("pei-shl"); 2005#endif 2006#ifdef TARGET_IS_armpe 2007 pe_dll_id_target ("pei-arm-little"); 2008#endif 2009#ifdef TARGET_IS_arm_epoc_pe 2010 pe_dll_id_target ("epoc-pei-arm-little"); 2011#endif 2012#ifdef TARGET_IS_arm_wince_pe 2013 pe_dll_id_target ("pei-arm-wince-little"); 2014#endif 2015 if (pe_bfd_is_dll (entry->the_bfd)) 2016 return pe_implied_import_dll (entry->filename); 2017#endif 2018 return FALSE; 2019} 2020 2021static void 2022gld_${EMULATION_NAME}_finish (void) 2023{ 2024#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 2025 struct bfd_link_hash_entry * h; 2026 2027 if (thumb_entry_symbol != NULL) 2028 { 2029 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, 2030 FALSE, FALSE, TRUE); 2031 2032 if (h != (struct bfd_link_hash_entry *) NULL 2033 && (h->type == bfd_link_hash_defined 2034 || h->type == bfd_link_hash_defweak) 2035 && h->u.def.section->output_section != NULL) 2036 { 2037 static char buffer[32]; 2038 bfd_vma val; 2039 2040 /* Special procesing is required for a Thumb entry symbol. The 2041 bottom bit of its address must be set. */ 2042 val = (h->u.def.value 2043 + bfd_get_section_vma (link_info.output_bfd, 2044 h->u.def.section->output_section) 2045 + h->u.def.section->output_offset); 2046 2047 val |= 1; 2048 2049 /* Now convert this value into a string and store it in entry_symbol 2050 where the lang_finish() function will pick it up. */ 2051 buffer[0] = '0'; 2052 buffer[1] = 'x'; 2053 2054 sprintf_vma (buffer + 2, val); 2055 2056 if (entry_symbol.name != NULL && entry_from_cmdline) 2057 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), 2058 thumb_entry_symbol, entry_symbol.name); 2059 entry_symbol.name = buffer; 2060 } 2061 else 2062 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol); 2063 } 2064#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */ 2065 2066 finish_default (); 2067 2068#ifdef DLL_SUPPORT 2069 if (bfd_link_pic (&link_info) 2070#if !defined(TARGET_IS_shpe) 2071 || (!bfd_link_relocatable (&link_info) 2072 && pe_def_file->num_exports != 0) 2073#endif 2074 ) 2075 { 2076 pe_dll_fill_sections (link_info.output_bfd, &link_info); 2077 if (pe_implib_filename) 2078 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info); 2079 } 2080#if defined(TARGET_IS_shpe) 2081 /* ARM doesn't need relocs. */ 2082 else 2083 { 2084 pe_exe_fill_sections (link_info.output_bfd, &link_info); 2085 } 2086#endif 2087 2088 if (pe_out_def_filename) 2089 pe_dll_generate_def_file (pe_out_def_filename); 2090#endif /* DLL_SUPPORT */ 2091 2092 /* I don't know where .idata gets set as code, but it shouldn't be. */ 2093 { 2094 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata"); 2095 2096 if (asec) 2097 { 2098 asec->flags &= ~SEC_CODE; 2099 asec->flags |= SEC_DATA; 2100 } 2101 } 2102} 2103 2104 2105/* Place an orphan section. 2106 2107 We use this to put sections in a reasonable place in the file, and 2108 to ensure that they are aligned as required. 2109 2110 We handle grouped sections here as well. A section named .foo\$nn 2111 goes into the output section .foo. All grouped sections are sorted 2112 by name. 2113 2114 Grouped sections for the default sections are handled by the 2115 default linker script using wildcards, and are sorted by 2116 sort_sections. */ 2117 2118static lang_output_section_statement_type * 2119gld_${EMULATION_NAME}_place_orphan (asection *s, 2120 const char *secname, 2121 int constraint) 2122{ 2123 const char *orig_secname = secname; 2124 char *dollar = NULL; 2125 lang_output_section_statement_type *os; 2126 lang_statement_list_type add_child; 2127 lang_output_section_statement_type *match_by_name = NULL; 2128 lang_statement_union_type **pl; 2129 2130 /* Look through the script to see where to place this section. */ 2131 if (!bfd_link_relocatable (&link_info) 2132 && (dollar = strchr (secname, '\$')) != NULL) 2133 { 2134 size_t len = dollar - secname; 2135 char *newname = xmalloc (len + 1); 2136 memcpy (newname, secname, len); 2137 newname[len] = '\0'; 2138 secname = newname; 2139 } 2140 2141 lang_list_init (&add_child); 2142 2143 os = NULL; 2144 if (constraint == 0) 2145 for (os = lang_output_section_find (secname); 2146 os != NULL; 2147 os = next_matching_output_section_statement (os, 0)) 2148 { 2149 /* If we don't match an existing output section, tell 2150 lang_insert_orphan to create a new output section. */ 2151 constraint = SPECIAL; 2152 2153 if (os->bfd_section != NULL 2154 && (os->bfd_section->flags == 0 2155 || ((s->flags ^ os->bfd_section->flags) 2156 & (SEC_LOAD | SEC_ALLOC)) == 0)) 2157 { 2158 /* We already have an output section statement with this 2159 name, and its bfd section has compatible flags. 2160 If the section already exists but does not have any flags set, 2161 then it has been created by the linker, probably as a result of 2162 a --section-start command line switch. */ 2163 lang_add_section (&add_child, s, NULL, os); 2164 break; 2165 } 2166 2167 /* Save unused output sections in case we can match them 2168 against orphans later. */ 2169 if (os->bfd_section == NULL) 2170 match_by_name = os; 2171 } 2172 2173 /* If we didn't match an active output section, see if we matched an 2174 unused one and use that. */ 2175 if (os == NULL && match_by_name) 2176 { 2177 lang_add_section (&match_by_name->children, s, NULL, match_by_name); 2178 return match_by_name; 2179 } 2180 2181 if (os == NULL) 2182 { 2183 static struct orphan_save hold[] = 2184 { 2185 { ".text", 2186 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, 2187 0, 0, 0, 0 }, 2188 { ".idata", 2189 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2190 0, 0, 0, 0 }, 2191 { ".rdata", 2192 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2193 0, 0, 0, 0 }, 2194 { ".data", 2195 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, 2196 0, 0, 0, 0 }, 2197 { ".bss", 2198 SEC_ALLOC, 2199 0, 0, 0, 0 } 2200 }; 2201 enum orphan_save_index 2202 { 2203 orphan_text = 0, 2204 orphan_idata, 2205 orphan_rodata, 2206 orphan_data, 2207 orphan_bss 2208 }; 2209 static int orphan_init_done = 0; 2210 struct orphan_save *place; 2211 lang_output_section_statement_type *after; 2212 etree_type *address; 2213 flagword flags; 2214 asection *nexts; 2215 2216 if (!orphan_init_done) 2217 { 2218 struct orphan_save *ho; 2219 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) 2220 if (ho->name != NULL) 2221 { 2222 ho->os = lang_output_section_find (ho->name); 2223 if (ho->os != NULL && ho->os->flags == 0) 2224 ho->os->flags = ho->flags; 2225 } 2226 orphan_init_done = 1; 2227 } 2228 2229 flags = s->flags; 2230 if (!bfd_link_relocatable (&link_info)) 2231 { 2232 nexts = s; 2233 while ((nexts = bfd_get_next_section_by_name (nexts->owner, 2234 nexts))) 2235 if (nexts->output_section == NULL 2236 && (nexts->flags & SEC_EXCLUDE) == 0 2237 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0 2238 && (nexts->owner->flags & DYNAMIC) == 0 2239 && nexts->owner->usrdata != NULL 2240 && !(((lang_input_statement_type *) nexts->owner->usrdata) 2241 ->flags.just_syms)) 2242 flags = (((flags ^ SEC_READONLY) 2243 | (nexts->flags ^ SEC_READONLY)) 2244 ^ SEC_READONLY); 2245 } 2246 2247 /* Try to put the new output section in a reasonable place based 2248 on the section name and section flags. */ 2249 2250 place = NULL; 2251 if ((flags & SEC_ALLOC) == 0) 2252 ; 2253 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 2254 place = &hold[orphan_bss]; 2255 else if ((flags & SEC_READONLY) == 0) 2256 place = &hold[orphan_data]; 2257 else if ((flags & SEC_CODE) == 0) 2258 { 2259 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata] 2260 : &hold[orphan_rodata]); 2261 } 2262 else 2263 place = &hold[orphan_text]; 2264 2265 after = NULL; 2266 if (place != NULL) 2267 { 2268 if (place->os == NULL) 2269 place->os = lang_output_section_find (place->name); 2270 after = place->os; 2271 if (after == NULL) 2272 after = lang_output_section_find_by_flags (s, flags, &place->os, 2273 NULL); 2274 if (after == NULL) 2275 /* *ABS* is always the first output section statement. */ 2276 after = (&lang_output_section_statement.head 2277 ->output_section_statement); 2278 } 2279 2280 /* All sections in an executable must be aligned to a page boundary. 2281 In a relocatable link, just preserve the incoming alignment; the 2282 address is discarded by lang_insert_orphan in that case, anyway. */ 2283 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); 2284 os = lang_insert_orphan (s, secname, constraint, after, place, address, 2285 &add_child); 2286 if (bfd_link_relocatable (&link_info)) 2287 { 2288 os->section_alignment = s->alignment_power; 2289 os->bfd_section->alignment_power = s->alignment_power; 2290 } 2291 } 2292 2293 /* If the section name has a '\$', sort it with the other '\$' 2294 sections. */ 2295 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next) 2296 { 2297 lang_input_section_type *ls; 2298 const char *lname; 2299 2300 if ((*pl)->header.type != lang_input_section_enum) 2301 continue; 2302 2303 ls = &(*pl)->input_section; 2304 2305 lname = bfd_get_section_name (ls->section->owner, ls->section); 2306 if (strchr (lname, '\$') != NULL 2307 && (dollar == NULL || strcmp (orig_secname, lname) < 0)) 2308 break; 2309 } 2310 2311 if (add_child.head != NULL) 2312 { 2313 *add_child.tail = *pl; 2314 *pl = add_child.head; 2315 } 2316 2317 return os; 2318} 2319 2320static bfd_boolean 2321gld_${EMULATION_NAME}_open_dynamic_archive 2322 (const char *arch ATTRIBUTE_UNUSED, 2323 search_dirs_type *search, 2324 lang_input_statement_type *entry) 2325{ 2326 static const struct 2327 { 2328 const char * format; 2329 bfd_boolean use_prefix; 2330 } 2331 libname_fmt [] = 2332 { 2333 /* Preferred explicit import library for dll's. */ 2334 { "lib%s.dll.a", FALSE }, 2335 /* Alternate explicit import library for dll's. */ 2336 { "%s.dll.a", FALSE }, 2337 /* "libfoo.a" could be either an import lib or a static lib. 2338 For backwards compatibility, libfoo.a needs to precede 2339 libfoo.dll and foo.dll in the search. */ 2340 { "lib%s.a", FALSE }, 2341 /* The 'native' spelling of an import lib name is "foo.lib". */ 2342 { "%s.lib", FALSE }, 2343#ifdef DLL_SUPPORT 2344 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ 2345 { "%s%s.dll", TRUE }, 2346#endif 2347 /* Try "libfoo.dll" (default preferred dll name). */ 2348 { "lib%s.dll", FALSE }, 2349 /* Finally try 'native' dll name "foo.dll". */ 2350 { "%s.dll", FALSE }, 2351 /* Note: If adding more formats to this table, make sure to check to 2352 see if their length is longer than libname_fmt[0].format, and if 2353 so, update the call to xmalloc() below. */ 2354 { NULL, FALSE } 2355 }; 2356 static unsigned int format_max_len = 0; 2357 const char * filename; 2358 char * full_string; 2359 char * base_string; 2360 unsigned int i; 2361 2362 2363 if (! entry->flags.maybe_archive || entry->flags.full_name_provided) 2364 return FALSE; 2365 2366 filename = entry->filename; 2367 2368 if (format_max_len == 0) 2369 /* We need to allow space in the memory that we are going to allocate 2370 for the characters in the format string. Since the format array is 2371 static we only need to calculate this information once. In theory 2372 this value could also be computed statically, but this introduces 2373 the possibility for a discrepancy and hence a possible memory 2374 corruption. The lengths we compute here will be too long because 2375 they will include any formating characters (%s) in the strings, but 2376 this will not matter. */ 2377 for (i = 0; libname_fmt[i].format; i++) 2378 if (format_max_len < strlen (libname_fmt[i].format)) 2379 format_max_len = strlen (libname_fmt[i].format); 2380 2381 full_string = xmalloc (strlen (search->name) 2382 + strlen (filename) 2383 + format_max_len 2384#ifdef DLL_SUPPORT 2385 + (pe_dll_search_prefix 2386 ? strlen (pe_dll_search_prefix) : 0) 2387#endif 2388 /* Allow for the terminating NUL and for the path 2389 separator character that is inserted between 2390 search->name and the start of the format string. */ 2391 + 2); 2392 2393 sprintf (full_string, "%s/", search->name); 2394 base_string = full_string + strlen (full_string); 2395 2396 for (i = 0; libname_fmt[i].format; i++) 2397 { 2398#ifdef DLL_SUPPORT 2399 if (libname_fmt[i].use_prefix) 2400 { 2401 if (!pe_dll_search_prefix) 2402 continue; 2403 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename); 2404 } 2405 else 2406#endif 2407 sprintf (base_string, libname_fmt[i].format, filename); 2408 2409 if (ldfile_try_open_bfd (full_string, entry)) 2410 break; 2411 } 2412 2413 if (!libname_fmt[i].format) 2414 { 2415 free (full_string); 2416 return FALSE; 2417 } 2418 2419 entry->filename = full_string; 2420 2421 return TRUE; 2422} 2423 2424static int 2425gld_${EMULATION_NAME}_find_potential_libraries 2426 (char *name, lang_input_statement_type *entry) 2427{ 2428 return ldfile_open_file_search (name, entry, "", ".lib"); 2429} 2430 2431static char * 2432gld_${EMULATION_NAME}_get_script (int *isfile) 2433EOF 2434# Scripts compiled in. 2435# sed commands to quote an ld script as a C string. 2436sc="-f stringify.sed" 2437 2438fragment <<EOF 2439{ 2440 *isfile = 0; 2441 2442 if (bfd_link_relocatable (&link_info) && config.build_constructors) 2443 return 2444EOF 2445sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 2446echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c 2447sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 2448echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 2449sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 2450echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 2451sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 2452if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then 2453echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c 2454sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c 2455fi 2456echo ' ; else return' >> e${EMULATION_NAME}.c 2457sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 2458echo '; }' >> e${EMULATION_NAME}.c 2459 2460fragment <<EOF 2461 2462 2463struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 2464{ 2465 gld_${EMULATION_NAME}_before_parse, 2466 syslib_default, 2467 hll_default, 2468 gld_${EMULATION_NAME}_after_parse, 2469 gld_${EMULATION_NAME}_after_open, 2470 after_allocation_default, 2471 set_output_arch_default, 2472 ldemul_default_target, 2473 gld_${EMULATION_NAME}_before_allocation, 2474 gld_${EMULATION_NAME}_get_script, 2475 "${EMULATION_NAME}", 2476 "${OUTPUT_FORMAT}", 2477 gld_${EMULATION_NAME}_finish, 2478 NULL, /* Create output section statements. */ 2479 gld_${EMULATION_NAME}_open_dynamic_archive, 2480 gld_${EMULATION_NAME}_place_orphan, 2481 gld_${EMULATION_NAME}_set_symbols, 2482 NULL, /* parse_args */ 2483 gld${EMULATION_NAME}_add_options, 2484 gld${EMULATION_NAME}_handle_option, 2485 gld_${EMULATION_NAME}_unrecognized_file, 2486 gld_${EMULATION_NAME}_list_options, 2487 gld_${EMULATION_NAME}_recognized_file, 2488 gld_${EMULATION_NAME}_find_potential_libraries, 2489 NULL, /* new_vers_pattern. */ 2490 NULL /* extra_map_file_text. */ 2491}; 2492EOF 2493