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 if (t->build_id.sec->contents == NULL) 1334 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); 1335 contents = t->build_id.sec->contents; 1336 size = t->build_id.sec->size; 1337 1338 build_id_size = compute_build_id_size (t->build_id.style); 1339 build_id = xmalloc (build_id_size); 1340 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size); 1341 1342 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase; 1343 1344 /* Construct a debug directory entry which points to an immediately following CodeView record. */ 1345 struct internal_IMAGE_DEBUG_DIRECTORY idd; 1346 idd.Characteristics = 0; 1347 idd.TimeDateStamp = 0; 1348 idd.MajorVersion = 0; 1349 idd.MinorVersion = 0; 1350 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW; 1351 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1; 1352 idd.AddressOfRawData = asec->vma - ib + link_order->offset 1353 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1354 idd.PointerToRawData = asec->filepos + link_order->offset 1355 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1356 1357 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents; 1358 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext); 1359 1360 /* Write the debug directory entry. */ 1361 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) 1362 return 0; 1363 1364 if (bfd_bwrite (contents, size, abfd) != size) 1365 return 0; 1366 1367 /* Construct the CodeView record. */ 1368 CODEVIEW_INFO cvinfo; 1369 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE; 1370 cvinfo.Age = 1; 1371 1372 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */ 1373 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH); 1374 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH) 1375 ? CV_INFO_SIGNATURE_LENGTH : build_id_size); 1376 1377 free (build_id); 1378 1379 /* Write the codeview record. */ 1380 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0) 1381 return 0; 1382 1383 /* Record the location of the debug directory in the data directory. */ 1384 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress 1385 = asec->vma - ib + link_order->offset; 1386 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size 1387 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1388 1389 return TRUE; 1390} 1391 1392/* Make .buildid section, and set up coff_tdata->build_id. */ 1393static bfd_boolean 1394setup_build_id (bfd *ibfd) 1395{ 1396 asection *s; 1397 flagword flags; 1398 1399 if (!validate_build_id_style (emit_build_id)) 1400 { 1401 einfo ("%P: warning: unrecognized --build-id style ignored.\n"); 1402 return FALSE; 1403 } 1404 1405 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY 1406 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA); 1407 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags); 1408 if (s != NULL) 1409 { 1410 struct pe_tdata *t = pe_data (link_info.output_bfd); 1411 t->build_id.after_write_object_contents = &write_build_id; 1412 t->build_id.style = emit_build_id; 1413 t->build_id.sec = s; 1414 1415 /* Section is a fixed size: 1416 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW, 1417 pointing at a CV_INFO_PDB70 record containing the build-id, with a 1418 null byte for PdbFileName. */ 1419 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY) 1420 + sizeof (CV_INFO_PDB70) + 1; 1421 1422 return TRUE; 1423 } 1424 1425 einfo ("%P: warning: Cannot create .buildid section," 1426 " --build-id ignored.\n"); 1427 return FALSE; 1428} 1429 1430static void 1431gld_${EMULATION_NAME}_after_open (void) 1432{ 1433 after_open_default (); 1434 1435#ifdef DLL_SUPPORT 1436 if (pe_dll_extra_pe_debug) 1437 { 1438 bfd *a; 1439 struct bfd_link_hash_entry *sym; 1440 1441 printf ("%s()\n", __FUNCTION__); 1442 1443 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) 1444 printf ("-%s\n", sym->root.string); 1445 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); 1446 1447 for (a = link_info.input_bfds; a; a = a->link.next) 1448 printf ("*%s\n",a->filename); 1449 } 1450#endif 1451 1452 if (emit_build_id != NULL) 1453 { 1454 bfd *abfd; 1455 1456 /* Find a COFF input. */ 1457 for (abfd = link_info.input_bfds; 1458 abfd != (bfd *) NULL; abfd = abfd->link.next) 1459 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) 1460 break; 1461 1462 /* If there are no COFF input files do not try to 1463 add a build-id section. */ 1464 if (abfd == NULL 1465 || !setup_build_id (abfd)) 1466 { 1467 free ((char *) emit_build_id); 1468 emit_build_id = NULL; 1469 } 1470 } 1471 1472 /* Pass the wacky PE command line options into the output bfd. 1473 FIXME: This should be done via a function, rather than by 1474 including an internal BFD header. */ 1475 1476 if (coff_data (link_info.output_bfd) == NULL 1477 || coff_data (link_info.output_bfd)->pe == 0) 1478 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), 1479 link_info.output_bfd); 1480 1481 pe_data (link_info.output_bfd)->pe_opthdr = pe; 1482 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value; 1483 pe_data (link_info.output_bfd)->real_flags |= real_flags; 1484 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp; 1485 1486 /* At this point we must decide whether to use long section names 1487 in the output or not. If the user hasn't explicitly specified 1488 on the command line, we leave it to the default for the format 1489 (object files yes, image files no), except if there is debug 1490 information present; GDB relies on the long section names to 1491 find it, so enable it in that case. */ 1492 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none) 1493 { 1494 if (bfd_link_relocatable (&link_info)) 1495 pe_use_coff_long_section_names = 1; 1496 else 1497 { 1498 /* Iterate over all sections of all input BFDs, checking 1499 for any that begin 'debug_' and are long names. */ 1500 LANG_FOR_EACH_INPUT_STATEMENT (is) 1501 { 1502 int found_debug = 0; 1503 1504 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug); 1505 if (found_debug) 1506 { 1507 pe_use_coff_long_section_names = 1; 1508 break; 1509 } 1510 } 1511 } 1512 } 1513 1514 pe_output_file_set_long_section_names (link_info.output_bfd); 1515 1516#ifdef DLL_SUPPORT 1517 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1518 pe_fixup_stdcalls (); 1519 1520 pe_process_import_defs (link_info.output_bfd, &link_info); 1521 1522 pe_find_data_imports (); 1523 1524 /* As possibly new symbols are added by imports, we rerun 1525 stdcall/fastcall fixup here. */ 1526 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ 1527 pe_fixup_stdcalls (); 1528 1529#if defined (TARGET_IS_i386pe) \ 1530 || defined (TARGET_IS_armpe) \ 1531 || defined (TARGET_IS_arm_epoc_pe) \ 1532 || defined (TARGET_IS_arm_wince_pe) 1533 if (!bfd_link_relocatable (&link_info)) 1534 pe_dll_build_sections (link_info.output_bfd, &link_info); 1535#else 1536 if (bfd_link_pic (&link_info)) 1537 pe_dll_build_sections (link_info.output_bfd, &link_info); 1538 else 1539 pe_exe_build_sections (link_info.output_bfd, &link_info); 1540#endif 1541#endif /* DLL_SUPPORT */ 1542 1543#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 1544 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) 1545 { 1546 /* The arm backend needs special fields in the output hash structure. 1547 These will only be created if the output format is an arm format, 1548 hence we do not support linking and changing output formats at the 1549 same time. Use a link followed by objcopy to change output formats. */ 1550 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); 1551 return; 1552 } 1553 { 1554 /* Find a BFD that can hold the interworking stubs. */ 1555 LANG_FOR_EACH_INPUT_STATEMENT (is) 1556 { 1557 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) 1558 break; 1559 } 1560 } 1561#endif 1562 1563 { 1564 /* This next chunk of code tries to detect the case where you have 1565 two import libraries for the same DLL (specifically, 1566 symbolically linking libm.a and libc.a in cygwin to 1567 libcygwin.a). In those cases, it's possible for function 1568 thunks from the second implib to be used but without the 1569 head/tail objects, causing an improper import table. We detect 1570 those cases and rename the "other" import libraries to match 1571 the one the head/tail come from, so that the linker will sort 1572 things nicely and produce a valid import table. */ 1573 1574 LANG_FOR_EACH_INPUT_STATEMENT (is) 1575 { 1576 if (is->the_bfd->my_archive) 1577 { 1578 int idata2 = 0, reloc_count=0, is_imp = 0; 1579 asection *sec; 1580 1581 /* See if this is an import library thunk. */ 1582 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1583 { 1584 if (strcmp (sec->name, ".idata\$2") == 0) 1585 idata2 = 1; 1586 if (CONST_STRNEQ (sec->name, ".idata\$")) 1587 is_imp = 1; 1588 reloc_count += sec->reloc_count; 1589 } 1590 1591 if (is_imp && !idata2 && reloc_count) 1592 { 1593 /* It is, look for the reference to head and see if it's 1594 from our own library. */ 1595 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1596 { 1597 int i; 1598 long relsize; 1599 asymbol **symbols; 1600 arelent **relocs; 1601 int nrelocs; 1602 1603 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); 1604 if (relsize < 1) 1605 break; 1606 1607 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1608 { 1609 einfo (_("%B%F: could not read symbols: %E\n"), 1610 is->the_bfd); 1611 return; 1612 } 1613 symbols = bfd_get_outsymbols (is->the_bfd); 1614 1615 relocs = xmalloc ((size_t) relsize); 1616 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, 1617 relocs, symbols); 1618 if (nrelocs < 0) 1619 { 1620 free (relocs); 1621 einfo ("%X%P: unable to process relocs: %E\n"); 1622 return; 1623 } 1624 1625 for (i = 0; i < nrelocs; i++) 1626 { 1627 struct bfd_symbol *s; 1628 struct bfd_link_hash_entry * blhe; 1629 char *other_bfd_filename; 1630 char *n; 1631 1632 s = (relocs[i]->sym_ptr_ptr)[0]; 1633 1634 if (s->flags & BSF_LOCAL) 1635 continue; 1636 1637 /* Thunk section with reloc to another bfd. */ 1638 blhe = bfd_link_hash_lookup (link_info.hash, 1639 s->name, 1640 FALSE, FALSE, TRUE); 1641 1642 if (blhe == NULL 1643 || blhe->type != bfd_link_hash_defined) 1644 continue; 1645 1646 other_bfd_filename 1647 = blhe->u.def.section->owner->my_archive 1648 ? bfd_get_filename (blhe->u.def.section->owner->my_archive) 1649 : bfd_get_filename (blhe->u.def.section->owner); 1650 1651 if (filename_cmp (bfd_get_filename 1652 (is->the_bfd->my_archive), 1653 other_bfd_filename) == 0) 1654 continue; 1655 1656 /* Rename this implib to match the other one. */ 1657 n = xmalloc (strlen (other_bfd_filename) + 1); 1658 strcpy (n, other_bfd_filename); 1659 is->the_bfd->my_archive->filename = n; 1660 } 1661 1662 free (relocs); 1663 /* Note - we do not free the symbols, 1664 they are now cached in the BFD. */ 1665 } 1666 } 1667 } 1668 } 1669 } 1670 1671 { 1672 int is_ms_arch = 0; 1673 bfd *cur_arch = 0; 1674 lang_input_statement_type *is2; 1675 lang_input_statement_type *is3; 1676 1677 /* Careful - this is a shell script. Watch those dollar signs! */ 1678 /* Microsoft import libraries have every member named the same, 1679 and not in the right order for us to link them correctly. We 1680 must detect these and rename the members so that they'll link 1681 correctly. There are three types of objects: the head, the 1682 thunks, and the sentinel(s). The head is easy; it's the one 1683 with idata2. We assume that the sentinels won't have relocs, 1684 and the thunks will. It's easier than checking the symbol 1685 table for external references. */ 1686 LANG_FOR_EACH_INPUT_STATEMENT (is) 1687 { 1688 if (is->the_bfd->my_archive) 1689 { 1690 char *pnt; 1691 bfd *arch = is->the_bfd->my_archive; 1692 1693 if (cur_arch != arch) 1694 { 1695 cur_arch = arch; 1696 is_ms_arch = 1; 1697 1698 for (is3 = is; 1699 is3 && is3->the_bfd->my_archive == arch; 1700 is3 = (lang_input_statement_type *) is3->next) 1701 { 1702 /* A MS dynamic import library can also contain static 1703 members, so look for the first element with a .dll 1704 extension, and use that for the remainder of the 1705 comparisons. */ 1706 pnt = strrchr (is3->the_bfd->filename, '.'); 1707 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0) 1708 break; 1709 } 1710 1711 if (is3 == NULL) 1712 is_ms_arch = 0; 1713 else 1714 { 1715 /* OK, found one. Now look to see if the remaining 1716 (dynamic import) members use the same name. */ 1717 for (is2 = is; 1718 is2 && is2->the_bfd->my_archive == arch; 1719 is2 = (lang_input_statement_type *) is2->next) 1720 { 1721 /* Skip static members, ie anything with a .obj 1722 extension. */ 1723 pnt = strrchr (is2->the_bfd->filename, '.'); 1724 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0) 1725 continue; 1726 1727 if (filename_cmp (is3->the_bfd->filename, 1728 is2->the_bfd->filename)) 1729 { 1730 is_ms_arch = 0; 1731 break; 1732 } 1733 } 1734 } 1735 } 1736 1737 /* This fragment might have come from an .obj file in a Microsoft 1738 import, and not an actual import record. If this is the case, 1739 then leave the filename alone. */ 1740 pnt = strrchr (is->the_bfd->filename, '.'); 1741 1742 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0)) 1743 { 1744 int idata2 = 0, reloc_count=0; 1745 asection *sec; 1746 char *new_name, seq; 1747 1748 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1749 { 1750 if (strcmp (sec->name, ".idata\$2") == 0) 1751 idata2 = 1; 1752 reloc_count += sec->reloc_count; 1753 } 1754 1755 if (idata2) /* .idata2 is the TOC */ 1756 seq = 'a'; 1757 else if (reloc_count > 0) /* thunks */ 1758 seq = 'b'; 1759 else /* sentinel */ 1760 seq = 'c'; 1761 1762 new_name = xmalloc (strlen (is->the_bfd->filename) + 3); 1763 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); 1764 is->the_bfd->filename = new_name; 1765 1766 new_name = xmalloc (strlen (is->filename) + 3); 1767 sprintf (new_name, "%s.%c", is->filename, seq); 1768 is->filename = new_name; 1769 } 1770 } 1771 } 1772 } 1773 1774 { 1775 /* The following chunk of code tries to identify jump stubs in 1776 import libraries which are dead code and eliminates them 1777 from the final link. For each exported symbol <sym>, there 1778 is a object file in the import library with a .text section 1779 and several .idata\$* sections. The .text section contains the 1780 symbol definition for <sym> which is a jump stub of the form 1781 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition 1782 for __imp_<sym> which is the address of the slot for <sym> in 1783 the import address table. When a symbol is imported explicitly 1784 using __declspec(dllimport) declaration, the compiler generates 1785 a reference to __imp_<sym> which directly resolves to the 1786 symbol in .idata\$5, in which case the jump stub code is not 1787 needed. The following code tries to identify jump stub sections 1788 in import libraries which are not referred to by anyone and 1789 marks them for exclusion from the final link. */ 1790 LANG_FOR_EACH_INPUT_STATEMENT (is) 1791 { 1792 if (is->the_bfd->my_archive) 1793 { 1794 int is_imp = 0; 1795 asection *sec, *stub_sec = NULL; 1796 1797 /* See if this is an import library thunk. */ 1798 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1799 { 1800 if (strncmp (sec->name, ".idata\$", 7) == 0) 1801 is_imp = 1; 1802 /* The section containing the jmp stub has code 1803 and has a reloc. */ 1804 if ((sec->flags & SEC_CODE) && sec->reloc_count) 1805 stub_sec = sec; 1806 } 1807 1808 if (is_imp && stub_sec) 1809 { 1810 asymbol **symbols; 1811 long nsyms, src_count; 1812 struct bfd_link_hash_entry * blhe; 1813 1814 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1815 { 1816 einfo (_("%B%F: could not read symbols: %E\n"), 1817 is->the_bfd); 1818 return; 1819 } 1820 symbols = bfd_get_outsymbols (is->the_bfd); 1821 nsyms = bfd_get_symcount (is->the_bfd); 1822 1823 for (src_count = 0; src_count < nsyms; src_count++) 1824 { 1825 if (symbols[src_count]->section->id == stub_sec->id) 1826 { 1827 /* This symbol belongs to the section containing 1828 the stub. */ 1829 blhe = bfd_link_hash_lookup (link_info.hash, 1830 symbols[src_count]->name, 1831 FALSE, FALSE, TRUE); 1832 /* If the symbol in the stub section has no other 1833 undefined references, exclude the stub section 1834 from the final link. */ 1835 if (blhe != NULL 1836 && blhe->type == bfd_link_hash_defined 1837 && blhe->u.undef.next == NULL 1838 && blhe != link_info.hash->undefs_tail) 1839 stub_sec->flags |= SEC_EXCLUDE; 1840 } 1841 } 1842 } 1843 } 1844 } 1845 } 1846} 1847 1848static void 1849gld_${EMULATION_NAME}_before_allocation (void) 1850{ 1851#ifdef TARGET_IS_ppcpe 1852 /* Here we rummage through the found bfds to collect toc information. */ 1853 { 1854 LANG_FOR_EACH_INPUT_STATEMENT (is) 1855 { 1856 if (!ppc_process_before_allocation (is->the_bfd, &link_info)) 1857 { 1858 /* xgettext:c-format */ 1859 einfo (_("Errors encountered processing file %s\n"), is->filename); 1860 } 1861 } 1862 } 1863 1864 /* We have seen it all. Allocate it, and carry on. */ 1865 ppc_allocate_toc_section (&link_info); 1866#endif /* TARGET_IS_ppcpe */ 1867 1868#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 1869 /* FIXME: we should be able to set the size of the interworking stub 1870 section. 1871 1872 Here we rummage through the found bfds to collect glue 1873 information. FIXME: should this be based on a command line 1874 option? krk@cygnus.com. */ 1875 { 1876 LANG_FOR_EACH_INPUT_STATEMENT (is) 1877 { 1878 if (! bfd_arm_process_before_allocation 1879 (is->the_bfd, & link_info, support_old_code)) 1880 { 1881 /* xgettext:c-format */ 1882 einfo (_("Errors encountered processing file %s for interworking\n"), 1883 is->filename); 1884 } 1885 } 1886 } 1887 1888 /* We have seen it all. Allocate it, and carry on. */ 1889 bfd_arm_allocate_interworking_sections (& link_info); 1890#endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */ 1891 1892 before_allocation_default (); 1893} 1894 1895#ifdef DLL_SUPPORT 1896/* This is called when an input file isn't recognized as a BFD. We 1897 check here for .DEF files and pull them in automatically. */ 1898 1899static int 1900saw_option (char *option) 1901{ 1902 int i; 1903 1904 for (i = 0; init[i].ptr; i++) 1905 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0) 1906 return init[i].inited; 1907 return 0; 1908} 1909#endif /* DLL_SUPPORT */ 1910 1911static bfd_boolean 1912gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1913{ 1914#ifdef DLL_SUPPORT 1915 const char *ext = entry->filename + strlen (entry->filename) - 4; 1916 1917 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0) 1918 { 1919 pe_def_file = def_file_parse (entry->filename, pe_def_file); 1920 1921 if (pe_def_file) 1922 { 1923 int i, buflen=0, len; 1924 char *buf; 1925 1926 for (i = 0; i < pe_def_file->num_exports; i++) 1927 { 1928 len = strlen (pe_def_file->exports[i].internal_name); 1929 if (buflen < len + 2) 1930 buflen = len + 2; 1931 } 1932 1933 buf = xmalloc (buflen); 1934 1935 for (i = 0; i < pe_def_file->num_exports; i++) 1936 { 1937 struct bfd_link_hash_entry *h; 1938 1939 sprintf (buf, "%s%s", U (""), 1940 pe_def_file->exports[i].internal_name); 1941 1942 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); 1943 if (h == (struct bfd_link_hash_entry *) NULL) 1944 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); 1945 if (h->type == bfd_link_hash_new) 1946 { 1947 h->type = bfd_link_hash_undefined; 1948 h->u.undef.abfd = NULL; 1949 bfd_link_add_undef (link_info.hash, h); 1950 } 1951 } 1952 free (buf); 1953 1954 /* def_file_print (stdout, pe_def_file); */ 1955 if (pe_def_file->is_dll == 1) 1956 link_info.type = type_dll; 1957 1958 if (pe_def_file->base_address != (bfd_vma)(-1)) 1959 { 1960 pe.ImageBase 1961 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase 1962 = init[IMAGEBASEOFF].value 1963 = pe_def_file->base_address; 1964 init[IMAGEBASEOFF].inited = 1; 1965 if (image_base_statement) 1966 image_base_statement->exp 1967 = exp_assign ("__image_base__", exp_intop (pe.ImageBase), 1968 FALSE); 1969 } 1970 1971 if (pe_def_file->stack_reserve != -1 1972 && ! saw_option ("__size_of_stack_reserve__")) 1973 { 1974 pe.SizeOfStackReserve = pe_def_file->stack_reserve; 1975 if (pe_def_file->stack_commit != -1) 1976 pe.SizeOfStackCommit = pe_def_file->stack_commit; 1977 } 1978 if (pe_def_file->heap_reserve != -1 1979 && ! saw_option ("__size_of_heap_reserve__")) 1980 { 1981 pe.SizeOfHeapReserve = pe_def_file->heap_reserve; 1982 if (pe_def_file->heap_commit != -1) 1983 pe.SizeOfHeapCommit = pe_def_file->heap_commit; 1984 } 1985 return TRUE; 1986 } 1987 } 1988#endif 1989 return FALSE; 1990} 1991 1992static bfd_boolean 1993gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1994{ 1995#ifdef DLL_SUPPORT 1996#ifdef TARGET_IS_i386pe 1997 pe_dll_id_target ("pei-i386"); 1998#endif 1999#ifdef TARGET_IS_shpe 2000 pe_dll_id_target ("pei-shl"); 2001#endif 2002#ifdef TARGET_IS_armpe 2003 pe_dll_id_target ("pei-arm-little"); 2004#endif 2005#ifdef TARGET_IS_arm_epoc_pe 2006 pe_dll_id_target ("epoc-pei-arm-little"); 2007#endif 2008#ifdef TARGET_IS_arm_wince_pe 2009 pe_dll_id_target ("pei-arm-wince-little"); 2010#endif 2011 if (pe_bfd_is_dll (entry->the_bfd)) 2012 return pe_implied_import_dll (entry->filename); 2013#endif 2014 return FALSE; 2015} 2016 2017static void 2018gld_${EMULATION_NAME}_finish (void) 2019{ 2020#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) 2021 struct bfd_link_hash_entry * h; 2022 2023 if (thumb_entry_symbol != NULL) 2024 { 2025 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, 2026 FALSE, FALSE, TRUE); 2027 2028 if (h != (struct bfd_link_hash_entry *) NULL 2029 && (h->type == bfd_link_hash_defined 2030 || h->type == bfd_link_hash_defweak) 2031 && h->u.def.section->output_section != NULL) 2032 { 2033 static char buffer[32]; 2034 bfd_vma val; 2035 2036 /* Special procesing is required for a Thumb entry symbol. The 2037 bottom bit of its address must be set. */ 2038 val = (h->u.def.value 2039 + bfd_get_section_vma (link_info.output_bfd, 2040 h->u.def.section->output_section) 2041 + h->u.def.section->output_offset); 2042 2043 val |= 1; 2044 2045 /* Now convert this value into a string and store it in entry_symbol 2046 where the lang_finish() function will pick it up. */ 2047 buffer[0] = '0'; 2048 buffer[1] = 'x'; 2049 2050 sprintf_vma (buffer + 2, val); 2051 2052 if (entry_symbol.name != NULL && entry_from_cmdline) 2053 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), 2054 thumb_entry_symbol, entry_symbol.name); 2055 entry_symbol.name = buffer; 2056 } 2057 else 2058 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol); 2059 } 2060#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */ 2061 2062 finish_default (); 2063 2064#ifdef DLL_SUPPORT 2065 if (bfd_link_pic (&link_info) 2066#if !defined(TARGET_IS_shpe) 2067 || (!bfd_link_relocatable (&link_info) 2068 && pe_def_file->num_exports != 0) 2069#endif 2070 ) 2071 { 2072 pe_dll_fill_sections (link_info.output_bfd, &link_info); 2073 if (pe_implib_filename) 2074 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info); 2075 } 2076#if defined(TARGET_IS_shpe) 2077 /* ARM doesn't need relocs. */ 2078 else 2079 { 2080 pe_exe_fill_sections (link_info.output_bfd, &link_info); 2081 } 2082#endif 2083 2084 if (pe_out_def_filename) 2085 pe_dll_generate_def_file (pe_out_def_filename); 2086#endif /* DLL_SUPPORT */ 2087 2088 /* I don't know where .idata gets set as code, but it shouldn't be. */ 2089 { 2090 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata"); 2091 2092 if (asec) 2093 { 2094 asec->flags &= ~SEC_CODE; 2095 asec->flags |= SEC_DATA; 2096 } 2097 } 2098} 2099 2100 2101/* Place an orphan section. 2102 2103 We use this to put sections in a reasonable place in the file, and 2104 to ensure that they are aligned as required. 2105 2106 We handle grouped sections here as well. A section named .foo\$nn 2107 goes into the output section .foo. All grouped sections are sorted 2108 by name. 2109 2110 Grouped sections for the default sections are handled by the 2111 default linker script using wildcards, and are sorted by 2112 sort_sections. */ 2113 2114static lang_output_section_statement_type * 2115gld_${EMULATION_NAME}_place_orphan (asection *s, 2116 const char *secname, 2117 int constraint) 2118{ 2119 const char *orig_secname = secname; 2120 char *dollar = NULL; 2121 lang_output_section_statement_type *os; 2122 lang_statement_list_type add_child; 2123 lang_output_section_statement_type *match_by_name = NULL; 2124 lang_statement_union_type **pl; 2125 2126 /* Look through the script to see where to place this section. */ 2127 if (!bfd_link_relocatable (&link_info) 2128 && (dollar = strchr (secname, '\$')) != NULL) 2129 { 2130 size_t len = dollar - secname; 2131 char *newname = xmalloc (len + 1); 2132 memcpy (newname, secname, len); 2133 newname[len] = '\0'; 2134 secname = newname; 2135 } 2136 2137 lang_list_init (&add_child); 2138 2139 os = NULL; 2140 if (constraint == 0) 2141 for (os = lang_output_section_find (secname); 2142 os != NULL; 2143 os = next_matching_output_section_statement (os, 0)) 2144 { 2145 /* If we don't match an existing output section, tell 2146 lang_insert_orphan to create a new output section. */ 2147 constraint = SPECIAL; 2148 2149 if (os->bfd_section != NULL 2150 && (os->bfd_section->flags == 0 2151 || ((s->flags ^ os->bfd_section->flags) 2152 & (SEC_LOAD | SEC_ALLOC)) == 0)) 2153 { 2154 /* We already have an output section statement with this 2155 name, and its bfd section has compatible flags. 2156 If the section already exists but does not have any flags set, 2157 then it has been created by the linker, probably as a result of 2158 a --section-start command line switch. */ 2159 lang_add_section (&add_child, s, NULL, os); 2160 break; 2161 } 2162 2163 /* Save unused output sections in case we can match them 2164 against orphans later. */ 2165 if (os->bfd_section == NULL) 2166 match_by_name = os; 2167 } 2168 2169 /* If we didn't match an active output section, see if we matched an 2170 unused one and use that. */ 2171 if (os == NULL && match_by_name) 2172 { 2173 lang_add_section (&match_by_name->children, s, NULL, match_by_name); 2174 return match_by_name; 2175 } 2176 2177 if (os == NULL) 2178 { 2179 static struct orphan_save hold[] = 2180 { 2181 { ".text", 2182 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, 2183 0, 0, 0, 0 }, 2184 { ".idata", 2185 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2186 0, 0, 0, 0 }, 2187 { ".rdata", 2188 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2189 0, 0, 0, 0 }, 2190 { ".data", 2191 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, 2192 0, 0, 0, 0 }, 2193 { ".bss", 2194 SEC_ALLOC, 2195 0, 0, 0, 0 } 2196 }; 2197 enum orphan_save_index 2198 { 2199 orphan_text = 0, 2200 orphan_idata, 2201 orphan_rodata, 2202 orphan_data, 2203 orphan_bss 2204 }; 2205 static int orphan_init_done = 0; 2206 struct orphan_save *place; 2207 lang_output_section_statement_type *after; 2208 etree_type *address; 2209 flagword flags; 2210 asection *nexts; 2211 2212 if (!orphan_init_done) 2213 { 2214 struct orphan_save *ho; 2215 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) 2216 if (ho->name != NULL) 2217 { 2218 ho->os = lang_output_section_find (ho->name); 2219 if (ho->os != NULL && ho->os->flags == 0) 2220 ho->os->flags = ho->flags; 2221 } 2222 orphan_init_done = 1; 2223 } 2224 2225 flags = s->flags; 2226 if (!bfd_link_relocatable (&link_info)) 2227 { 2228 nexts = s; 2229 while ((nexts = bfd_get_next_section_by_name (nexts->owner, 2230 nexts))) 2231 if (nexts->output_section == NULL 2232 && (nexts->flags & SEC_EXCLUDE) == 0 2233 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0 2234 && (nexts->owner->flags & DYNAMIC) == 0 2235 && nexts->owner->usrdata != NULL 2236 && !(((lang_input_statement_type *) nexts->owner->usrdata) 2237 ->flags.just_syms)) 2238 flags = (((flags ^ SEC_READONLY) 2239 | (nexts->flags ^ SEC_READONLY)) 2240 ^ SEC_READONLY); 2241 } 2242 2243 /* Try to put the new output section in a reasonable place based 2244 on the section name and section flags. */ 2245 2246 place = NULL; 2247 if ((flags & SEC_ALLOC) == 0) 2248 ; 2249 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 2250 place = &hold[orphan_bss]; 2251 else if ((flags & SEC_READONLY) == 0) 2252 place = &hold[orphan_data]; 2253 else if ((flags & SEC_CODE) == 0) 2254 { 2255 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata] 2256 : &hold[orphan_rodata]); 2257 } 2258 else 2259 place = &hold[orphan_text]; 2260 2261 after = NULL; 2262 if (place != NULL) 2263 { 2264 if (place->os == NULL) 2265 place->os = lang_output_section_find (place->name); 2266 after = place->os; 2267 if (after == NULL) 2268 after = lang_output_section_find_by_flags (s, flags, &place->os, 2269 NULL); 2270 if (after == NULL) 2271 /* *ABS* is always the first output section statement. */ 2272 after = (&lang_output_section_statement.head 2273 ->output_section_statement); 2274 } 2275 2276 /* All sections in an executable must be aligned to a page boundary. 2277 In a relocatable link, just preserve the incoming alignment; the 2278 address is discarded by lang_insert_orphan in that case, anyway. */ 2279 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); 2280 os = lang_insert_orphan (s, secname, constraint, after, place, address, 2281 &add_child); 2282 if (bfd_link_relocatable (&link_info)) 2283 { 2284 os->section_alignment = s->alignment_power; 2285 os->bfd_section->alignment_power = s->alignment_power; 2286 } 2287 } 2288 2289 /* If the section name has a '\$', sort it with the other '\$' 2290 sections. */ 2291 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next) 2292 { 2293 lang_input_section_type *ls; 2294 const char *lname; 2295 2296 if ((*pl)->header.type != lang_input_section_enum) 2297 continue; 2298 2299 ls = &(*pl)->input_section; 2300 2301 lname = bfd_get_section_name (ls->section->owner, ls->section); 2302 if (strchr (lname, '\$') != NULL 2303 && (dollar == NULL || strcmp (orig_secname, lname) < 0)) 2304 break; 2305 } 2306 2307 if (add_child.head != NULL) 2308 { 2309 *add_child.tail = *pl; 2310 *pl = add_child.head; 2311 } 2312 2313 return os; 2314} 2315 2316static bfd_boolean 2317gld_${EMULATION_NAME}_open_dynamic_archive 2318 (const char *arch ATTRIBUTE_UNUSED, 2319 search_dirs_type *search, 2320 lang_input_statement_type *entry) 2321{ 2322 static const struct 2323 { 2324 const char * format; 2325 bfd_boolean use_prefix; 2326 } 2327 libname_fmt [] = 2328 { 2329 /* Preferred explicit import library for dll's. */ 2330 { "lib%s.dll.a", FALSE }, 2331 /* Alternate explicit import library for dll's. */ 2332 { "%s.dll.a", FALSE }, 2333 /* "libfoo.a" could be either an import lib or a static lib. 2334 For backwards compatibility, libfoo.a needs to precede 2335 libfoo.dll and foo.dll in the search. */ 2336 { "lib%s.a", FALSE }, 2337 /* The 'native' spelling of an import lib name is "foo.lib". */ 2338 { "%s.lib", FALSE }, 2339#ifdef DLL_SUPPORT 2340 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ 2341 { "%s%s.dll", TRUE }, 2342#endif 2343 /* Try "libfoo.dll" (default preferred dll name). */ 2344 { "lib%s.dll", FALSE }, 2345 /* Finally try 'native' dll name "foo.dll". */ 2346 { "%s.dll", FALSE }, 2347 /* Note: If adding more formats to this table, make sure to check to 2348 see if their length is longer than libname_fmt[0].format, and if 2349 so, update the call to xmalloc() below. */ 2350 { NULL, FALSE } 2351 }; 2352 static unsigned int format_max_len = 0; 2353 const char * filename; 2354 char * full_string; 2355 char * base_string; 2356 unsigned int i; 2357 2358 2359 if (! entry->flags.maybe_archive || entry->flags.full_name_provided) 2360 return FALSE; 2361 2362 filename = entry->filename; 2363 2364 if (format_max_len == 0) 2365 /* We need to allow space in the memory that we are going to allocate 2366 for the characters in the format string. Since the format array is 2367 static we only need to calculate this information once. In theory 2368 this value could also be computed statically, but this introduces 2369 the possibility for a discrepancy and hence a possible memory 2370 corruption. The lengths we compute here will be too long because 2371 they will include any formating characters (%s) in the strings, but 2372 this will not matter. */ 2373 for (i = 0; libname_fmt[i].format; i++) 2374 if (format_max_len < strlen (libname_fmt[i].format)) 2375 format_max_len = strlen (libname_fmt[i].format); 2376 2377 full_string = xmalloc (strlen (search->name) 2378 + strlen (filename) 2379 + format_max_len 2380#ifdef DLL_SUPPORT 2381 + (pe_dll_search_prefix 2382 ? strlen (pe_dll_search_prefix) : 0) 2383#endif 2384 /* Allow for the terminating NUL and for the path 2385 separator character that is inserted between 2386 search->name and the start of the format string. */ 2387 + 2); 2388 2389 sprintf (full_string, "%s/", search->name); 2390 base_string = full_string + strlen (full_string); 2391 2392 for (i = 0; libname_fmt[i].format; i++) 2393 { 2394#ifdef DLL_SUPPORT 2395 if (libname_fmt[i].use_prefix) 2396 { 2397 if (!pe_dll_search_prefix) 2398 continue; 2399 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename); 2400 } 2401 else 2402#endif 2403 sprintf (base_string, libname_fmt[i].format, filename); 2404 2405 if (ldfile_try_open_bfd (full_string, entry)) 2406 break; 2407 } 2408 2409 if (!libname_fmt[i].format) 2410 { 2411 free (full_string); 2412 return FALSE; 2413 } 2414 2415 entry->filename = full_string; 2416 2417 return TRUE; 2418} 2419 2420static int 2421gld_${EMULATION_NAME}_find_potential_libraries 2422 (char *name, lang_input_statement_type *entry) 2423{ 2424 return ldfile_open_file_search (name, entry, "", ".lib"); 2425} 2426 2427static char * 2428gld_${EMULATION_NAME}_get_script (int *isfile) 2429EOF 2430# Scripts compiled in. 2431# sed commands to quote an ld script as a C string. 2432sc="-f stringify.sed" 2433 2434fragment <<EOF 2435{ 2436 *isfile = 0; 2437 2438 if (bfd_link_relocatable (&link_info) && config.build_constructors) 2439 return 2440EOF 2441sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 2442echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c 2443sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 2444echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 2445sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 2446echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 2447sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 2448if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then 2449echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c 2450sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c 2451fi 2452echo ' ; else return' >> e${EMULATION_NAME}.c 2453sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 2454echo '; }' >> e${EMULATION_NAME}.c 2455 2456fragment <<EOF 2457 2458 2459struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 2460{ 2461 gld_${EMULATION_NAME}_before_parse, 2462 syslib_default, 2463 hll_default, 2464 gld_${EMULATION_NAME}_after_parse, 2465 gld_${EMULATION_NAME}_after_open, 2466 after_allocation_default, 2467 set_output_arch_default, 2468 ldemul_default_target, 2469 gld_${EMULATION_NAME}_before_allocation, 2470 gld_${EMULATION_NAME}_get_script, 2471 "${EMULATION_NAME}", 2472 "${OUTPUT_FORMAT}", 2473 gld_${EMULATION_NAME}_finish, 2474 NULL, /* Create output section statements. */ 2475 gld_${EMULATION_NAME}_open_dynamic_archive, 2476 gld_${EMULATION_NAME}_place_orphan, 2477 gld_${EMULATION_NAME}_set_symbols, 2478 NULL, /* parse_args */ 2479 gld${EMULATION_NAME}_add_options, 2480 gld${EMULATION_NAME}_handle_option, 2481 gld_${EMULATION_NAME}_unrecognized_file, 2482 gld_${EMULATION_NAME}_list_options, 2483 gld_${EMULATION_NAME}_recognized_file, 2484 gld_${EMULATION_NAME}_find_potential_libraries, 2485 NULL, /* new_vers_pattern. */ 2486 NULL /* extra_map_file_text. */ 2487}; 2488EOF 2489