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) 1995-2020 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_${EMULATION_NAME} 39 40#include "sysdep.h" 41#include "bfd.h" 42#include "bfdlink.h" 43#include "ctf-api.h" 44#include "getopt.h" 45#include "libiberty.h" 46#include "filenames.h" 47#include "ld.h" 48#include "ldmain.h" 49#include "ldexp.h" 50#include "ldlang.h" 51#include "ldfile.h" 52#include "ldemul.h" 53#include <ldgram.h> 54#include "ldlex.h" 55#include "ldmisc.h" 56#include "ldctor.h" 57#include "ldbuildid.h" 58#include "coff/internal.h" 59 60/* FIXME: See bfd/peXXigen.c for why we include an architecture specific 61 header in generic PE code. */ 62#include "coff/i386.h" 63#include "coff/pe.h" 64 65/* FIXME: These are BFD internal header files, and we should not be 66 using it here. */ 67#include "../bfd/libcoff.h" 68#include "../bfd/libpei.h" 69 70#if defined(TARGET_IS_armpe) \ 71 || defined(TARGET_IS_arm_wince_pe) 72#define bfd_arm_allocate_interworking_sections \ 73 bfd_${EMULATION_NAME}_allocate_interworking_sections 74#define bfd_arm_get_bfd_for_interworking \ 75 bfd_${EMULATION_NAME}_get_bfd_for_interworking 76#define bfd_arm_process_before_allocation \ 77 bfd_${EMULATION_NAME}_process_before_allocation 78#include "coff-arm.h" 79#endif 80 81#include "deffile.h" 82#include "pe-dll.h" 83#include "safe-ctype.h" 84 85/* Permit the emulation parameters to override the default section 86 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes 87 it seem that include/coff/internal.h should not define 88 PE_DEF_SECTION_ALIGNMENT. */ 89#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT} 90#undef PE_DEF_SECTION_ALIGNMENT 91#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT} 92#endif 93 94#if defined(TARGET_IS_i386pe) \ 95 || defined(TARGET_IS_shpe) \ 96 || defined(TARGET_IS_armpe) \ 97 || defined(TARGET_IS_arm_wince_pe) 98#define DLL_SUPPORT 99#endif 100 101#if defined(TARGET_IS_i386pe) 102#define DEFAULT_PSEUDO_RELOC_VERSION 2 103#else 104#define DEFAULT_PSEUDO_RELOC_VERSION 1 105#endif 106 107#define DEFAULT_DLL_CHARACTERISTICS (IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE \ 108 | IMAGE_DLL_CHARACTERISTICS_NX_COMPAT) 109 110#if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT) 111#define PE_DEF_SUBSYSTEM 3 112#else 113#undef NT_EXE_IMAGE_BASE 114#undef PE_DEF_SECTION_ALIGNMENT 115#undef PE_DEF_FILE_ALIGNMENT 116#define NT_EXE_IMAGE_BASE 0x00010000 117 118#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 119#define PE_DEF_SECTION_ALIGNMENT 0x00001000 120#define PE_DEF_SUBSYSTEM 9 121#else 122#define PE_DEF_SECTION_ALIGNMENT 0x00000400 123#define PE_DEF_SUBSYSTEM 2 124#endif 125#define PE_DEF_FILE_ALIGNMENT 0x00000200 126#endif 127 128static struct internal_extra_pe_aouthdr pe; 129static int dll; 130static int pe_subsystem = ${SUBSYSTEM}; 131static flagword real_flags = 0; 132static int support_old_code = 0; 133static char * thumb_entry_symbol = NULL; 134static lang_assignment_statement_type *image_base_statement = 0; 135static unsigned short pe_dll_characteristics = DEFAULT_DLL_CHARACTERISTICS; 136static bfd_boolean insert_timestamp = TRUE; 137static const char *emit_build_id; 138 139#ifdef DLL_SUPPORT 140static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */ 141static char *pe_out_def_filename = NULL; 142static int pe_enable_auto_image_base = 0; 143static unsigned long pe_auto_image_base = 0x61500000; 144static char *pe_dll_search_prefix = NULL; 145#endif 146 147extern const char *output_filename; 148 149static int is_underscoring (void) 150{ 151 int u = 0; 152 if (pe_leading_underscore != -1) 153 return pe_leading_underscore; 154 if (!bfd_get_target_info ("${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_THUMB_ENTRY (OPTION_DISABLE_STDCALL_FIXUP + 1) 232#define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1) 233#define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1) 234#define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1) 235#define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1) 236#define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1) 237#define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1) 238#define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1) 239#define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1) 240#define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1) 241#define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1) 242#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \ 243 (OPTION_EXCLUDE_LIBS + 1) 244#define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \ 245 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1) 246#define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1) 247#define OPTION_DISABLE_LARGE_ADDRESS_AWARE \ 248 (OPTION_LARGE_ADDRESS_AWARE + 1) 249#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \ 250 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1) 251#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \ 252 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1) 253#define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \ 254 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1) 255#define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \ 256 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1) 257#define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1) 258#define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1) 259#define OPTION_ENABLE_LONG_SECTION_NAMES \ 260 (OPTION_LEADING_UNDERSCORE + 1) 261#define OPTION_DISABLE_LONG_SECTION_NAMES \ 262 (OPTION_ENABLE_LONG_SECTION_NAMES + 1) 263/* DLLCharacteristics flags. */ 264#define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1) 265#define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1) 266#define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1) 267#define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1) 268#define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1) 269#define OPTION_NO_BIND (OPTION_NO_SEH + 1) 270#define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1) 271#define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1) 272/* Determinism. */ 273#define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1) 274#define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1) 275#define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1) 276#define OPTION_ENABLE_RELOC_SECTION (OPTION_BUILD_ID + 1) 277#define OPTION_DISABLE_RELOC_SECTION (OPTION_ENABLE_RELOC_SECTION + 1) 278/* DLL Characteristics flags. */ 279#define OPTION_DISABLE_DYNAMIC_BASE (OPTION_DISABLE_RELOC_SECTION + 1) 280#define OPTION_DISABLE_FORCE_INTEGRITY (OPTION_DISABLE_DYNAMIC_BASE + 1) 281#define OPTION_DISABLE_NX_COMPAT (OPTION_DISABLE_FORCE_INTEGRITY + 1) 282#define OPTION_DISABLE_NO_ISOLATION (OPTION_DISABLE_NX_COMPAT + 1) 283#define OPTION_DISABLE_NO_SEH (OPTION_DISABLE_NO_ISOLATION + 1) 284#define OPTION_DISABLE_NO_BIND (OPTION_DISABLE_NO_SEH + 1) 285#define OPTION_DISABLE_WDM_DRIVER (OPTION_DISABLE_NO_BIND + 1) 286#define OPTION_DISABLE_TERMINAL_SERVER_AWARE \ 287 (OPTION_DISABLE_WDM_DRIVER + 1) 288 289static void 290gld${EMULATION_NAME}_add_options 291 (int ns ATTRIBUTE_UNUSED, 292 char **shortopts ATTRIBUTE_UNUSED, 293 int nl, 294 struct option **longopts, 295 int nrl ATTRIBUTE_UNUSED, 296 struct option **really_longopts ATTRIBUTE_UNUSED) 297{ 298 static const struct option xtra_long[] = 299 { 300 /* PE options. */ 301 {"base-file", required_argument, NULL, OPTION_BASE_FILE}, 302 {"dll", no_argument, NULL, OPTION_DLL}, 303 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, 304 {"heap", required_argument, NULL, OPTION_HEAP}, 305 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, 306 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, 307 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, 308 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, 309 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, 310 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, 311 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, 312 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, 313 {"stack", required_argument, NULL, OPTION_STACK}, 314 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, 315 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, 316 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, 317 {"use-nul-prefixed-import-tables", no_argument, NULL, 318 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES}, 319 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE}, 320 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE}, 321 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP}, 322 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP}, 323#ifdef DLL_SUPPORT 324 /* getopt allows abbreviations, so we do this to stop it 325 from treating -o as an abbreviation for this option. */ 326 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 327 {"output-def", required_argument, NULL, OPTION_OUT_DEF}, 328 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL}, 329 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS}, 330 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS}, 331 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, 332 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB}, 333 {"kill-at", no_argument, NULL, OPTION_KILL_ATS}, 334 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES}, 335 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP}, 336 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP}, 337 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS}, 338 /* getopt() allows abbreviations, so we do this to stop it from 339 treating -c as an abbreviation for these --compat-implib. */ 340 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 341 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, 342 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE}, 343 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE}, 344 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX}, 345 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES}, 346 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT}, 347 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT}, 348 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG}, 349 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC}, 350 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC}, 351 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1}, 352 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2}, 353#endif 354 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE}, 355 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE}, 356 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES}, 357 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES}, 358 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE}, 359 {"disable-dynamicbase",no_argument, NULL, OPTION_DISABLE_DYNAMIC_BASE}, 360 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY}, 361 {"disable-forceinteg", no_argument, NULL, OPTION_DISABLE_FORCE_INTEGRITY}, 362 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT}, 363 {"disable-nxcompat", no_argument, NULL, OPTION_DISABLE_NX_COMPAT}, 364 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION}, 365 {"disable-no-isolation", no_argument, NULL, OPTION_DISABLE_NO_ISOLATION}, 366 {"no-seh", no_argument, NULL, OPTION_NO_SEH}, 367 {"disable-no-seh", no_argument, NULL, OPTION_DISABLE_NO_SEH}, 368 {"no-bind", no_argument, NULL, OPTION_NO_BIND}, 369 {"disable-no-bind", no_argument, NULL, OPTION_DISABLE_NO_BIND}, 370 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER}, 371 {"disable-wdmdriver", no_argument, NULL, OPTION_DISABLE_WDM_DRIVER}, 372 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE}, 373 {"disable-tsaware", no_argument, NULL, OPTION_DISABLE_TERMINAL_SERVER_AWARE}, 374 {"build-id", optional_argument, NULL, OPTION_BUILD_ID}, 375 {"enable-reloc-section", no_argument, NULL, OPTION_ENABLE_RELOC_SECTION}, 376 {"disable-reloc-section", no_argument, NULL, OPTION_DISABLE_RELOC_SECTION}, 377 {NULL, no_argument, NULL, 0} 378 }; 379 380 *longopts 381 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); 382 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); 383} 384 385/* PE/WIN32; added routines to get the subsystem type, heap and/or stack 386 parameters which may be input from the command line. */ 387 388typedef struct 389{ 390 void *ptr; 391 int size; 392 int value; 393 char *symbol; 394 int inited; 395 /* FALSE for an assembly level symbol and TRUE for a C visible symbol. 396 C visible symbols can be prefixed by underscore dependent to target's 397 settings. */ 398 bfd_boolean is_c_symbol; 399} definfo; 400 401/* Get symbol name dependent to kind and C visible state of 402 underscore. */ 403#define GET_INIT_SYMBOL_NAME(IDX) \ 404 (init[(IDX)].symbol \ 405 + ((!init[(IDX)].is_c_symbol || is_underscoring () != 0) ? 0 : 1)) 406 407/* Decorates the C visible symbol by underscore, if target requires. */ 408#define U(CSTR) \ 409 ((is_underscoring () == 0) ? CSTR : "_" CSTR) 410 411#define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc} 412 413static definfo init[] = 414{ 415 /* imagebase must be first */ 416#define IMAGEBASEOFF 0 417 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE), 418#define DLLOFF 1 419 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE}, 420#define MSIMAGEBASEOFF 2 421 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE), 422 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE), 423 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE), 424 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE), 425 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE), 426 D(MajorImageVersion,"__major_image_version__", 1, FALSE), 427 D(MinorImageVersion,"__minor_image_version__", 0, FALSE), 428#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 429 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE), 430#else 431 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE), 432#endif 433 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE), 434 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE), 435 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE), 436 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE), 437 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE), 438 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE), 439 D(LoaderFlags,"__loader_flags__", 0x0, FALSE), 440 D(DllCharacteristics, "__dll_characteristics__", DEFAULT_DLL_CHARACTERISTICS, FALSE), 441 { NULL, 0, 0, NULL, 0 , FALSE} 442}; 443 444 445static void 446gld_${EMULATION_NAME}_list_options (FILE *file) 447{ 448 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n")); 449 fprintf (file, _(" --dll Set image base to the default for DLLs\n")); 450 fprintf (file, _(" --file-alignment <size> Set file alignment\n")); 451 fprintf (file, _(" --heap <size> Set initial size of the heap\n")); 452 fprintf (file, _(" --image-base <address> Set start address of the executable\n")); 453 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n")); 454 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n")); 455 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n")); 456 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n")); 457 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n")); 458 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n")); 459 fprintf (file, _(" --section-alignment <size> Set section alignment\n")); 460 fprintf (file, _(" --stack <size> Set size of the initial stack\n")); 461 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); 462 fprintf (file, _(" --support-old-code Support interworking with old code\n")); 463 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n")); 464 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n")); 465 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n")); 466 fprintf (file, _(" This makes binaries non-deterministic\n")); 467#ifdef DLL_SUPPORT 468 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); 469 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); 470 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n")); 471 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n")); 472 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n")); 473 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n")); 474 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n")); 475 fprintf (file, _(" Exclude objects, archive members from auto\n")); 476 fprintf (file, _(" export, place into import library instead.\n")); 477 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n")); 478 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n")); 479 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); 480 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n")); 481 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\ 482 create __imp_<SYMBOL> as well.\n")); 483 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\ 484 (optionally starting with address) unless\n\ 485 specifically set with --image-base\n")); 486 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n")); 487 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\ 488 an importlib, use <string><basename>.dll\n\ 489 in preference to lib<basename>.dll \n")); 490 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\ 491 __imp_sym for DATA references\n")); 492 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n")); 493 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\ 494 adding pseudo-relocations resolved at\n\ 495 runtime.\n")); 496 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\ 497 auto-imported DATA.\n")); 498 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\ 499 or linking to DLLs (esp. auto-import)\n")); 500#endif 501 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\ 502 greater than 2 gigabytes\n")); 503 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\ 504 addresses greater than 2 gigabytes\n")); 505 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\ 506 executable image files\n")); 507 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\ 508 in object files\n")); 509 fprintf (file, _(" --[disable-]dynamicbase Image base address may be relocated using\n\ 510 address space layout randomization (ASLR)\n")); 511 fprintf (file, _(" --enable-reloc-section Create the base relocation table\n")); 512 fprintf (file, _(" --disable-reloc-section Do not create the base relocation table\n")); 513 fprintf (file, _(" --[disable-]forceinteg Code integrity checks are enforced\n")); 514 fprintf (file, _(" --[disable-]nxcompat Image is compatible with data execution\n\ 515 prevention\n")); 516 fprintf (file, _(" --[disable-]no-isolation Image understands isolation but do not\n\ 517 isolate the image\n")); 518 fprintf (file, _(" --[disable-]no-seh Image does not use SEH. No SE handler may\n\ 519 be called in this image\n")); 520 fprintf (file, _(" --[disable-]no-bind Do not bind this image\n")); 521 fprintf (file, _(" --[disable-]wdmdriver Driver uses the WDM model\n")); 522 fprintf (file, _(" --[disable-]tsaware Image is Terminal Server aware\n")); 523 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n")); 524} 525 526 527static void 528set_pe_name (char *name, long val) 529{ 530 int i; 531 is_underscoring (); 532 533 /* Find the name and set it. */ 534 for (i = 0; init[i].ptr; i++) 535 { 536 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0) 537 { 538 init[i].value = val; 539 init[i].inited = 1; 540 if (strcmp (name,"__image_base__") == 0) 541 set_pe_name (U ("__ImageBase"), val); 542 return; 543 } 544 } 545 abort (); 546} 547 548static void 549set_entry_point (void) 550{ 551 const char *entry; 552 const char *initial_symbol_char; 553 int i; 554 555 static const struct 556 { 557 const int value; 558 const char *entry; 559 } 560 v[] = 561 { 562 { 1, "NtProcessStartup" }, 563 { 2, "WinMainCRTStartup" }, 564 { 3, "mainCRTStartup" }, 565 { 7, "__PosixProcessStartup"}, 566 { 9, "WinMainCRTStartup" }, 567 {14, "mainCRTStartup" }, 568 { 0, NULL } 569 }; 570 571 /* Entry point name for arbitrary subsystem numbers. */ 572 static const char default_entry[] = "mainCRTStartup"; 573 574 if (bfd_link_pic (&link_info) || dll) 575 { 576#if defined (TARGET_IS_i386pe) 577 entry = "DllMainCRTStartup@12"; 578#else 579 entry = "DllMainCRTStartup"; 580#endif 581 } 582 else 583 { 584 for (i = 0; v[i].entry; i++) 585 if (v[i].value == pe_subsystem) 586 break; 587 588 /* If no match, use the default. */ 589 if (v[i].entry != NULL) 590 entry = v[i].entry; 591 else 592 entry = default_entry; 593 } 594 595 initial_symbol_char = (is_underscoring () != 0 ? "_" : ""); 596 597 if (*initial_symbol_char != '\0') 598 { 599 char *alc_entry; 600 601 /* lang_default_entry expects its argument to be permanently 602 allocated, so we don't free this string. */ 603 alc_entry = xmalloc (strlen (initial_symbol_char) 604 + strlen (entry) 605 + 1); 606 strcpy (alc_entry, initial_symbol_char); 607 strcat (alc_entry, entry); 608 entry = alc_entry; 609 } 610 611 lang_default_entry (entry); 612} 613 614static void 615set_pe_subsystem (void) 616{ 617 const char *sver; 618 char *end; 619 int len; 620 int i; 621 unsigned long temp_subsystem; 622 static const struct 623 { 624 const char *name; 625 const int value; 626 } 627 v[] = 628 { 629 { "native", 1}, 630 { "windows", 2}, 631 { "console", 3}, 632 { "posix", 7}, 633 { "wince", 9}, 634 { "xbox", 14}, 635 { NULL, 0 } 636 }; 637 638 /* Check for the presence of a version number. */ 639 sver = strchr (optarg, ':'); 640 if (sver == NULL) 641 len = strlen (optarg); 642 else 643 { 644 len = sver - optarg; 645 set_pe_name ("__major_subsystem_version__", 646 strtoul (sver + 1, &end, 0)); 647 if (*end == '.') 648 set_pe_name ("__minor_subsystem_version__", 649 strtoul (end + 1, &end, 0)); 650 if (*end != '\0') 651 einfo (_("%P: warning: bad version number in -subsystem option\n")); 652 } 653 654 /* Check for numeric subsystem. */ 655 temp_subsystem = strtoul (optarg, & end, 0); 656 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536)) 657 { 658 /* Search list for a numeric match to use its entry point. */ 659 for (i = 0; v[i].name; i++) 660 if (v[i].value == (int) temp_subsystem) 661 break; 662 663 /* Use this subsystem. */ 664 pe_subsystem = (int) temp_subsystem; 665 } 666 else 667 { 668 /* Search for subsystem by name. */ 669 for (i = 0; v[i].name; i++) 670 if (strncmp (optarg, v[i].name, len) == 0 671 && v[i].name[len] == '\0') 672 break; 673 674 if (v[i].name == NULL) 675 { 676 einfo (_("%F%P: invalid subsystem type %s\n"), optarg); 677 return; 678 } 679 680 pe_subsystem = v[i].value; 681 } 682 683 set_pe_name ("__subsystem__", pe_subsystem); 684 685 return; 686} 687 688 689static void 690set_pe_value (char *name) 691{ 692 char *end; 693 694 set_pe_name (name, strtoul (optarg, &end, 0)); 695 696 if (end == optarg) 697 einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg); 698 699 optarg = end; 700} 701 702 703static void 704set_pe_stack_heap (char *resname, char *comname) 705{ 706 set_pe_value (resname); 707 708 if (*optarg == ',') 709 { 710 optarg++; 711 set_pe_value (comname); 712 } 713 else if (*optarg) 714 einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg); 715} 716 717#define DEFAULT_BUILD_ID_STYLE "md5" 718 719static bfd_boolean 720gld${EMULATION_NAME}_handle_option (int optc) 721{ 722 switch (optc) 723 { 724 default: 725 return FALSE; 726 727 case OPTION_BASE_FILE: 728 link_info.base_file = fopen (optarg, FOPEN_WB); 729 if (link_info.base_file == NULL) 730 einfo (_("%F%P: cannot open base file %s\n"), optarg); 731 break; 732 733 /* PE options. */ 734 case OPTION_HEAP: 735 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); 736 break; 737 case OPTION_STACK: 738 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); 739 break; 740 case OPTION_SUBSYSTEM: 741 set_pe_subsystem (); 742 break; 743 case OPTION_MAJOR_OS_VERSION: 744 set_pe_value ("__major_os_version__"); 745 break; 746 case OPTION_MINOR_OS_VERSION: 747 set_pe_value ("__minor_os_version__"); 748 break; 749 case OPTION_MAJOR_SUBSYSTEM_VERSION: 750 set_pe_value ("__major_subsystem_version__"); 751 break; 752 case OPTION_MINOR_SUBSYSTEM_VERSION: 753 set_pe_value ("__minor_subsystem_version__"); 754 break; 755 case OPTION_MAJOR_IMAGE_VERSION: 756 set_pe_value ("__major_image_version__"); 757 break; 758 case OPTION_MINOR_IMAGE_VERSION: 759 set_pe_value ("__minor_image_version__"); 760 break; 761 case OPTION_FILE_ALIGNMENT: 762 set_pe_value ("__file_alignment__"); 763 break; 764 case OPTION_SECTION_ALIGNMENT: 765 set_pe_value ("__section_alignment__"); 766 break; 767 case OPTION_DLL: 768 set_pe_name ("__dll__", 1); 769 break; 770 case OPTION_IMAGE_BASE: 771 set_pe_value ("__image_base__"); 772 break; 773 case OPTION_SUPPORT_OLD_CODE: 774 support_old_code = 1; 775 break; 776 case OPTION_THUMB_ENTRY: 777 thumb_entry_symbol = optarg; 778 break; 779 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES: 780 pe_use_nul_prefixed_import_tables = TRUE; 781 break; 782 case OPTION_NO_LEADING_UNDERSCORE: 783 pe_leading_underscore = 0; 784 break; 785 case OPTION_LEADING_UNDERSCORE: 786 pe_leading_underscore = 1; 787 break; 788 case OPTION_INSERT_TIMESTAMP: 789 insert_timestamp = TRUE; 790 break; 791 case OPTION_NO_INSERT_TIMESTAMP: 792 insert_timestamp = FALSE; 793 break; 794#ifdef DLL_SUPPORT 795 case OPTION_OUT_DEF: 796 pe_out_def_filename = xstrdup (optarg); 797 break; 798 case OPTION_EXPORT_ALL: 799 pe_dll_export_everything = 1; 800 break; 801 case OPTION_EXCLUDE_SYMBOLS: 802 pe_dll_add_excludes (optarg, EXCLUDESYMS); 803 break; 804 case OPTION_EXCLUDE_ALL_SYMBOLS: 805 pe_dll_exclude_all_symbols = 1; 806 break; 807 case OPTION_EXCLUDE_LIBS: 808 pe_dll_add_excludes (optarg, EXCLUDELIBS); 809 break; 810 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB: 811 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB); 812 break; 813 case OPTION_KILL_ATS: 814 pe_dll_kill_ats = 1; 815 break; 816 case OPTION_STDCALL_ALIASES: 817 pe_dll_stdcall_aliases = 1; 818 break; 819 case OPTION_ENABLE_STDCALL_FIXUP: 820 pe_enable_stdcall_fixup = 1; 821 break; 822 case OPTION_DISABLE_STDCALL_FIXUP: 823 pe_enable_stdcall_fixup = 0; 824 break; 825 case OPTION_WARN_DUPLICATE_EXPORTS: 826 pe_dll_warn_dup_exports = 1; 827 break; 828 case OPTION_IMP_COMPAT: 829 pe_dll_compat_implib = 1; 830 break; 831 case OPTION_ENABLE_AUTO_IMAGE_BASE: 832 pe_enable_auto_image_base = 1; 833 if (optarg && *optarg) 834 { 835 char *end; 836 pe_auto_image_base = strtoul (optarg, &end, 0); 837 /* XXX should check that we actually parsed something */ 838 } 839 break; 840 case OPTION_DISABLE_AUTO_IMAGE_BASE: 841 pe_enable_auto_image_base = 0; 842 break; 843 case OPTION_DLL_SEARCH_PREFIX: 844 pe_dll_search_prefix = xstrdup (optarg); 845 break; 846 case OPTION_NO_DEFAULT_EXCLUDES: 847 pe_dll_do_default_excludes = 0; 848 break; 849 case OPTION_DLL_ENABLE_AUTO_IMPORT: 850 link_info.pei386_auto_import = 1; 851 break; 852 case OPTION_DLL_DISABLE_AUTO_IMPORT: 853 link_info.pei386_auto_import = 0; 854 break; 855 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC: 856 link_info.pei386_runtime_pseudo_reloc = 857 DEFAULT_PSEUDO_RELOC_VERSION; 858 break; 859 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1: 860 link_info.pei386_runtime_pseudo_reloc = 1; 861 break; 862 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2: 863 link_info.pei386_runtime_pseudo_reloc = 2; 864 break; 865 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC: 866 link_info.pei386_runtime_pseudo_reloc = 0; 867 break; 868 case OPTION_ENABLE_EXTRA_PE_DEBUG: 869 pe_dll_extra_pe_debug = 1; 870 break; 871#endif 872 case OPTION_LARGE_ADDRESS_AWARE: 873 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; 874 break; 875 case OPTION_DISABLE_LARGE_ADDRESS_AWARE: 876 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE; 877 break; 878 case OPTION_ENABLE_LONG_SECTION_NAMES: 879 pe_use_coff_long_section_names = 1; 880 break; 881 case OPTION_DISABLE_LONG_SECTION_NAMES: 882 pe_use_coff_long_section_names = 0; 883 break; 884/* Get DLLCharacteristics bits */ 885 case OPTION_DYNAMIC_BASE: 886 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE; 887 /* fall through */ 888 case OPTION_ENABLE_RELOC_SECTION: 889 pe_dll_enable_reloc_section = 1; 890 break; 891 case OPTION_DISABLE_RELOC_SECTION: 892 pe_dll_enable_reloc_section = 0; 893 /* fall through */ 894 case OPTION_DISABLE_DYNAMIC_BASE: 895 pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE; 896 break; 897 case OPTION_FORCE_INTEGRITY: 898 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY; 899 break; 900 case OPTION_DISABLE_FORCE_INTEGRITY: 901 pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY; 902 break; 903 case OPTION_NX_COMPAT: 904 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT; 905 break; 906 case OPTION_DISABLE_NX_COMPAT: 907 pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_NX_COMPAT; 908 break; 909 case OPTION_NO_ISOLATION: 910 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION; 911 break; 912 case OPTION_DISABLE_NO_ISOLATION: 913 pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_ISOLATION; 914 break; 915 case OPTION_NO_SEH: 916 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH; 917 break; 918 case OPTION_DISABLE_NO_SEH: 919 pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_SEH; 920 break; 921 case OPTION_NO_BIND: 922 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND; 923 break; 924 case OPTION_DISABLE_NO_BIND: 925 pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_BIND; 926 break; 927 case OPTION_WDM_DRIVER: 928 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER; 929 break; 930 case OPTION_DISABLE_WDM_DRIVER: 931 pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_WDM_DRIVER; 932 break; 933 case OPTION_TERMINAL_SERVER_AWARE: 934 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE; 935 break; 936 case OPTION_DISABLE_TERMINAL_SERVER_AWARE: 937 pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE; 938 break; 939 case OPTION_BUILD_ID: 940 free ((char *) emit_build_id); 941 emit_build_id = NULL; 942 if (optarg == NULL) 943 optarg = DEFAULT_BUILD_ID_STYLE; 944 if (strcmp (optarg, "none")) 945 emit_build_id = xstrdup (optarg); 946 break; 947 } 948 949 /* Set DLLCharacteristics bits */ 950 set_pe_name ("__dll_characteristics__", pe_dll_characteristics); 951 952 return TRUE; 953} 954 955 956#ifdef DLL_SUPPORT 957static unsigned long 958strhash (const char *str) 959{ 960 const unsigned char *s; 961 unsigned long hash; 962 unsigned int c; 963 unsigned int len; 964 965 hash = 0; 966 len = 0; 967 s = (const unsigned char *) str; 968 while ((c = *s++) != '\0') 969 { 970 hash += c + (c << 17); 971 hash ^= hash >> 2; 972 ++len; 973 } 974 hash += len + (len << 17); 975 hash ^= hash >> 2; 976 977 return hash; 978} 979 980/* Use the output file to create a image base for relocatable DLLs. */ 981 982static unsigned long 983compute_dll_image_base (const char *ofile) 984{ 985 unsigned long hash = strhash (ofile); 986 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000); 987} 988#endif 989 990/* Assign values to the special symbols before the linker script is 991 read. */ 992 993static void 994gld_${EMULATION_NAME}_set_symbols (void) 995{ 996 /* Run through and invent symbols for all the 997 names and insert the defaults. */ 998 int j; 999 1000 is_underscoring (); 1001 1002 if (!init[IMAGEBASEOFF].inited) 1003 { 1004 if (bfd_link_relocatable (&link_info)) 1005 init[IMAGEBASEOFF].value = 0; 1006 else if (init[DLLOFF].value || bfd_link_dll (&link_info)) 1007 { 1008#ifdef DLL_SUPPORT 1009 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base 1010 ? compute_dll_image_base (output_filename) 1011 : NT_DLL_IMAGE_BASE); 1012#else 1013 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; 1014#endif 1015 } 1016 else 1017 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; 1018 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value; 1019 } 1020 1021 /* Don't do any symbol assignments if this is a relocatable link. */ 1022 if (bfd_link_relocatable (&link_info)) 1023 return; 1024 1025 /* Glue the assignments into the abs section. */ 1026 push_stat_ptr (&abs_output_section->children); 1027 1028 for (j = 0; init[j].ptr; j++) 1029 { 1030 long val = init[j].value; 1031 lang_assignment_statement_type *rv; 1032 1033 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j), 1034 exp_intop (val), FALSE)); 1035 if (init[j].size == sizeof (short)) 1036 *(short *) init[j].ptr = val; 1037 else if (init[j].size == sizeof (int)) 1038 *(int *) init[j].ptr = val; 1039 else if (init[j].size == sizeof (long)) 1040 *(long *) init[j].ptr = val; 1041 /* This might be a long long or other special type. */ 1042 else if (init[j].size == sizeof (bfd_vma)) 1043 *(bfd_vma *) init[j].ptr = val; 1044 else abort (); 1045 if (j == IMAGEBASEOFF) 1046 image_base_statement = rv; 1047 } 1048 /* Restore the pointer. */ 1049 pop_stat_ptr (); 1050 1051 if (pe.FileAlignment > pe.SectionAlignment) 1052 { 1053 einfo (_("%P: warning, file alignment > section alignment\n")); 1054 } 1055} 1056 1057/* This is called after the linker script and the command line options 1058 have been read. */ 1059 1060static void 1061gld_${EMULATION_NAME}_after_parse (void) 1062{ 1063 /* PR ld/6744: Warn the user if they have used an ELF-only 1064 option hoping it will work on PE. */ 1065 if (link_info.export_dynamic) 1066 einfo (_("%P: warning: --export-dynamic is not supported for PE " 1067 "targets, did you mean --export-all-symbols?\n")); 1068 1069 set_entry_point (); 1070 1071 after_parse_default (); 1072} 1073 1074#ifdef DLL_SUPPORT 1075static struct bfd_link_hash_entry *pe_undef_found_sym; 1076 1077static bfd_boolean 1078pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf) 1079{ 1080 int sl; 1081 char *string = inf; 1082 const char *hs = h->root.string; 1083 1084 sl = strlen (string); 1085 if (h->type == bfd_link_hash_defined 1086 && ((*hs == '@' && *string == '_' 1087 && strncmp (hs + 1, string + 1, sl - 1) == 0) 1088 || strncmp (hs, string, sl) == 0) 1089 && h->root.string[sl] == '@') 1090 { 1091 pe_undef_found_sym = h; 1092 return FALSE; 1093 } 1094 return TRUE; 1095} 1096 1097/* Change UNDEF to a defined symbol, taking data from SYM. */ 1098 1099static void 1100change_undef (struct bfd_link_hash_entry * undef, 1101 struct bfd_link_hash_entry * sym) 1102{ 1103 static bfd_boolean gave_warning_message = FALSE; 1104 1105 undef->type = bfd_link_hash_defined; 1106 undef->u.def.value = sym->u.def.value; 1107 undef->u.def.section = sym->u.def.section; 1108 1109 if (pe_enable_stdcall_fixup == -1) 1110 { 1111 einfo (_("%P: warning: resolving %s by linking to %s\n"), 1112 undef->root.string, sym->root.string); 1113 1114 if (! gave_warning_message) 1115 { 1116 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); 1117 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); 1118 gave_warning_message = TRUE; 1119 } 1120 } 1121 1122 /* PR 19803: Make sure that the linked symbol is not garbage collected. */ 1123 lang_add_gc_name (sym->root.string); 1124} 1125 1126static void 1127pe_fixup_stdcalls (void) 1128{ 1129 struct bfd_link_hash_entry *undef, *sym; 1130 1131 if (pe_dll_extra_pe_debug) 1132 printf ("%s\n", __FUNCTION__); 1133 1134 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) 1135 if (undef->type == bfd_link_hash_undefined) 1136 { 1137 const char * name = undef->root.string; 1138 char * at; 1139 int lead_at = (*name == '@'); 1140 1141 if (lead_at) 1142 at = strchr (name + 1, '@'); 1143 else 1144 at = strchr (name, '@'); 1145 1146 if (at || lead_at) 1147 { 1148 /* The symbol is a stdcall symbol, so let's look for a 1149 cdecl symbol with the same name and resolve to that. */ 1150 char *cname = xstrdup (name); 1151 1152 if (lead_at) 1153 *cname = '_'; 1154 if (at) 1155 * strchr (cname, '@') = 0; 1156 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE); 1157 1158 if (sym && sym->type == bfd_link_hash_defined) 1159 change_undef (undef, sym); 1160 } 1161 else 1162 { 1163 /* The symbol is a cdecl symbol, so we look for stdcall 1164 symbols - which means scanning the whole symbol table. */ 1165 pe_undef_found_sym = NULL; 1166 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match, 1167 (char *) name); 1168 if (pe_undef_found_sym) 1169 change_undef (undef, pe_undef_found_sym); 1170 } 1171 } 1172} 1173 1174static void 1175make_import_fixup (arelent *rel, asection *s, char *name, const char *symname) 1176{ 1177 struct bfd_symbol *sym = *rel->sym_ptr_ptr; 1178 char addend[4]; 1179 bfd_vma _addend; 1180 1181 if (pe_dll_extra_pe_debug) 1182 printf ("arelent: %s@%#lx: add=%li\n", sym->name, 1183 (unsigned long) rel->address, (long) rel->addend); 1184 1185 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend))) 1186 einfo (_("%P: %C: cannot get section contents - auto-import exception\n"), 1187 s->owner, s, rel->address); 1188 1189 _addend = bfd_get_32 (s->owner, addend); 1190 pe_create_import_fixup (rel, s, _addend, name, symname); 1191} 1192 1193static bfd_boolean 1194pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED) 1195{ 1196 printf ("+%s\n", h->string); 1197 1198 return TRUE; 1199} 1200#endif /* DLL_SUPPORT */ 1201 1202static void 1203debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj) 1204{ 1205 int *found = (int *) obj; 1206 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0) 1207 *found = 1; 1208} 1209 1210static bfd_boolean 1211pecoff_checksum_contents (bfd *abfd, 1212 void (*process) (const void *, size_t, void *), 1213 void *arg) 1214{ 1215 file_ptr filepos = (file_ptr) 0; 1216 1217 while (1) 1218 { 1219 unsigned char b; 1220 int status; 1221 1222 if (bfd_seek (abfd, filepos, SEEK_SET) != 0) 1223 return 0; 1224 1225 status = bfd_bread (&b, (bfd_size_type) 1, abfd); 1226 if (status < 1) 1227 { 1228 break; 1229 } 1230 1231 (*process) (&b, 1, arg); 1232 filepos += 1; 1233 } 1234 1235 return TRUE; 1236} 1237 1238static bfd_boolean 1239write_build_id (bfd *abfd) 1240{ 1241 struct pe_tdata *t = pe_data (abfd); 1242 asection *asec; 1243 struct bfd_link_order *link_order = NULL; 1244 unsigned char *contents; 1245 bfd_size_type size; 1246 bfd_size_type build_id_size; 1247 unsigned char *build_id; 1248 1249 /* Find the section the .buildid output section has been merged info. */ 1250 for (asec = abfd->sections; asec != NULL; asec = asec->next) 1251 { 1252 struct bfd_link_order *l = NULL; 1253 for (l = asec->map_head.link_order; l != NULL; l = l->next) 1254 { 1255 if (l->type == bfd_indirect_link_order) 1256 { 1257 if (l->u.indirect.section == t->build_id.sec) 1258 { 1259 link_order = l; 1260 break; 1261 } 1262 } 1263 } 1264 1265 if (link_order) 1266 break; 1267 } 1268 1269 if (!link_order) 1270 { 1271 einfo (_("%P: warning: .buildid section discarded," 1272 " --build-id ignored\n")); 1273 return TRUE; 1274 } 1275 1276 if (t->build_id.sec->contents == NULL) 1277 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size); 1278 contents = t->build_id.sec->contents; 1279 size = t->build_id.sec->size; 1280 1281 build_id_size = compute_build_id_size (t->build_id.style); 1282 build_id = xmalloc (build_id_size); 1283 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size); 1284 1285 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase; 1286 1287 /* Construct a debug directory entry which points to an immediately following CodeView record. */ 1288 struct internal_IMAGE_DEBUG_DIRECTORY idd; 1289 idd.Characteristics = 0; 1290 idd.TimeDateStamp = 0; 1291 idd.MajorVersion = 0; 1292 idd.MinorVersion = 0; 1293 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW; 1294 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1; 1295 idd.AddressOfRawData = asec->vma - ib + link_order->offset 1296 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1297 idd.PointerToRawData = asec->filepos + link_order->offset 1298 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1299 1300 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents; 1301 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext); 1302 1303 /* Write the debug directory entry. */ 1304 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0) 1305 return 0; 1306 1307 if (bfd_bwrite (contents, size, abfd) != size) 1308 return 0; 1309 1310 /* Construct the CodeView record. */ 1311 CODEVIEW_INFO cvinfo; 1312 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE; 1313 cvinfo.Age = 1; 1314 1315 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */ 1316 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH); 1317 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH) 1318 ? CV_INFO_SIGNATURE_LENGTH : build_id_size); 1319 1320 free (build_id); 1321 1322 /* Write the codeview record. */ 1323 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0) 1324 return 0; 1325 1326 /* Record the location of the debug directory in the data directory. */ 1327 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress 1328 = asec->vma - ib + link_order->offset; 1329 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size 1330 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY); 1331 1332 return TRUE; 1333} 1334 1335/* Make .buildid section, and set up coff_tdata->build_id. */ 1336static bfd_boolean 1337setup_build_id (bfd *ibfd) 1338{ 1339 asection *s; 1340 flagword flags; 1341 1342 if (!validate_build_id_style (emit_build_id)) 1343 { 1344 einfo (_("%P: warning: unrecognized --build-id style ignored\n")); 1345 return FALSE; 1346 } 1347 1348 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY 1349 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA); 1350 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags); 1351 if (s != NULL) 1352 { 1353 struct pe_tdata *t = pe_data (link_info.output_bfd); 1354 t->build_id.after_write_object_contents = &write_build_id; 1355 t->build_id.style = emit_build_id; 1356 t->build_id.sec = s; 1357 1358 /* Section is a fixed size: 1359 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW, 1360 pointing at a CV_INFO_PDB70 record containing the build-id, with a 1361 null byte for PdbFileName. */ 1362 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY) 1363 + sizeof (CV_INFO_PDB70) + 1; 1364 1365 return TRUE; 1366 } 1367 1368 einfo (_("%P: warning: cannot create .buildid section," 1369 " --build-id ignored\n")); 1370 return FALSE; 1371} 1372 1373static void 1374gld_${EMULATION_NAME}_after_open (void) 1375{ 1376 after_open_default (); 1377 1378#ifdef DLL_SUPPORT 1379 if (pe_dll_extra_pe_debug) 1380 { 1381 bfd *a; 1382 struct bfd_link_hash_entry *sym; 1383 1384 printf ("%s()\n", __FUNCTION__); 1385 1386 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) 1387 printf ("-%s\n", sym->root.string); 1388 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); 1389 1390 for (a = link_info.input_bfds; a; a = a->link.next) 1391 printf ("*%s\n", bfd_get_filename (a)); 1392 } 1393#endif 1394 1395 if (emit_build_id != NULL) 1396 { 1397 bfd *abfd; 1398 1399 /* Find a COFF input. */ 1400 for (abfd = link_info.input_bfds; 1401 abfd != (bfd *) NULL; abfd = abfd->link.next) 1402 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) 1403 break; 1404 1405 /* If there are no COFF input files do not try to 1406 add a build-id section. */ 1407 if (abfd == NULL 1408 || !setup_build_id (abfd)) 1409 { 1410 free ((char *) emit_build_id); 1411 emit_build_id = NULL; 1412 } 1413 } 1414 1415 /* Pass the wacky PE command line options into the output bfd. 1416 FIXME: This should be done via a function, rather than by 1417 including an internal BFD header. */ 1418 1419 if (bfd_get_flavour (link_info.output_bfd) != bfd_target_coff_flavour 1420 || coff_data (link_info.output_bfd) == NULL 1421 || coff_data (link_info.output_bfd)->pe == 0) 1422 einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"), 1423 link_info.output_bfd); 1424 1425 pe_data (link_info.output_bfd)->pe_opthdr = pe; 1426 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value; 1427 pe_data (link_info.output_bfd)->real_flags |= real_flags; 1428 if (insert_timestamp) 1429 pe_data (link_info.output_bfd)->timestamp = -1; 1430 else 1431 pe_data (link_info.output_bfd)->timestamp = 0; 1432 1433 /* At this point we must decide whether to use long section names 1434 in the output or not. If the user hasn't explicitly specified 1435 on the command line, we leave it to the default for the format 1436 (object files yes, image files no), except if there is debug 1437 information present; GDB relies on the long section names to 1438 find it, so enable it in that case. */ 1439 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none) 1440 { 1441 if (bfd_link_relocatable (&link_info)) 1442 pe_use_coff_long_section_names = 1; 1443 else 1444 { 1445 /* Iterate over all sections of all input BFDs, checking 1446 for any that begin 'debug_' and are long names. */ 1447 LANG_FOR_EACH_INPUT_STATEMENT (is) 1448 { 1449 int found_debug = 0; 1450 1451 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug); 1452 if (found_debug) 1453 { 1454 pe_use_coff_long_section_names = 1; 1455 break; 1456 } 1457 } 1458 } 1459 } 1460 1461 pe_output_file_set_long_section_names (link_info.output_bfd); 1462 1463#ifdef DLL_SUPPORT 1464 pe_process_import_defs (link_info.output_bfd, &link_info); 1465 1466 if (link_info.pei386_auto_import) /* -1=warn or 1=enable */ 1467 pe_find_data_imports (U ("_head_"), make_import_fixup); 1468 1469 /* The implementation of the feature is rather dumb and would cause the 1470 compilation time to go through the roof if there are many undefined 1471 symbols in the link, so it needs to be run after auto-import. */ 1472 if (pe_enable_stdcall_fixup) /* -1=warn or 1=enable */ 1473 pe_fixup_stdcalls (); 1474 1475#if defined (TARGET_IS_i386pe) \ 1476 || defined (TARGET_IS_armpe) \ 1477 || defined (TARGET_IS_arm_wince_pe) 1478 if (!bfd_link_relocatable (&link_info)) 1479 pe_dll_build_sections (link_info.output_bfd, &link_info); 1480#else 1481 if (bfd_link_pic (&link_info)) 1482 pe_dll_build_sections (link_info.output_bfd, &link_info); 1483 else 1484 pe_exe_build_sections (link_info.output_bfd, &link_info); 1485#endif 1486#endif /* DLL_SUPPORT */ 1487 1488#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 1489 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) 1490 { 1491 /* The arm backend needs special fields in the output hash structure. 1492 These will only be created if the output format is an arm format, 1493 hence we do not support linking and changing output formats at the 1494 same time. Use a link followed by objcopy to change output formats. */ 1495 einfo (_("%F%P: error: cannot change output format " 1496 "whilst linking %s binaries\n"), "ARM"); 1497 return; 1498 } 1499 { 1500 /* Find a BFD that can hold the interworking stubs. */ 1501 LANG_FOR_EACH_INPUT_STATEMENT (is) 1502 { 1503 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) 1504 break; 1505 } 1506 } 1507#endif 1508 1509 { 1510 /* This next chunk of code tries to detect the case where you have 1511 two import libraries for the same DLL (specifically, 1512 symbolically linking libm.a and libc.a in cygwin to 1513 libcygwin.a). In those cases, it's possible for function 1514 thunks from the second implib to be used but without the 1515 head/tail objects, causing an improper import table. We detect 1516 those cases and rename the "other" import libraries to match 1517 the one the head/tail come from, so that the linker will sort 1518 things nicely and produce a valid import table. */ 1519 1520 LANG_FOR_EACH_INPUT_STATEMENT (is) 1521 { 1522 if (is->the_bfd->my_archive) 1523 { 1524 int idata2 = 0, reloc_count=0, is_imp = 0; 1525 asection *sec; 1526 1527 /* See if this is an import library thunk. */ 1528 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1529 { 1530 if (strcmp (sec->name, ".idata\$2") == 0) 1531 idata2 = 1; 1532 if (CONST_STRNEQ (sec->name, ".idata\$")) 1533 is_imp = 1; 1534 reloc_count += sec->reloc_count; 1535 } 1536 1537 if (is_imp && !idata2 && reloc_count) 1538 { 1539 /* It is, look for the reference to head and see if it's 1540 from our own library. */ 1541 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1542 { 1543 int i; 1544 long relsize; 1545 asymbol **symbols; 1546 arelent **relocs; 1547 int nrelocs; 1548 1549 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); 1550 if (relsize < 1) 1551 break; 1552 1553 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1554 { 1555 einfo (_("%F%P: %pB: could not read symbols: %E\n"), 1556 is->the_bfd); 1557 return; 1558 } 1559 symbols = bfd_get_outsymbols (is->the_bfd); 1560 1561 relocs = xmalloc ((size_t) relsize); 1562 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, 1563 relocs, symbols); 1564 if (nrelocs < 0) 1565 { 1566 free (relocs); 1567 einfo (_("%X%P: unable to process relocs: %E\n")); 1568 return; 1569 } 1570 1571 for (i = 0; i < nrelocs; i++) 1572 { 1573 struct bfd_symbol *s; 1574 struct bfd_link_hash_entry * blhe; 1575 const char *other_bfd_filename; 1576 1577 s = (relocs[i]->sym_ptr_ptr)[0]; 1578 1579 if (s->flags & BSF_LOCAL) 1580 continue; 1581 1582 /* Thunk section with reloc to another bfd. */ 1583 blhe = bfd_link_hash_lookup (link_info.hash, 1584 s->name, 1585 FALSE, FALSE, TRUE); 1586 1587 if (blhe == NULL 1588 || blhe->type != bfd_link_hash_defined) 1589 continue; 1590 1591 other_bfd_filename 1592 = blhe->u.def.section->owner->my_archive 1593 ? bfd_get_filename (blhe->u.def.section->owner->my_archive) 1594 : bfd_get_filename (blhe->u.def.section->owner); 1595 1596 if (filename_cmp (bfd_get_filename 1597 (is->the_bfd->my_archive), 1598 other_bfd_filename) == 0) 1599 continue; 1600 1601 /* Rename this implib to match the other one. */ 1602 if (!bfd_set_filename (is->the_bfd->my_archive, 1603 other_bfd_filename)) 1604 einfo ("%F%P: %pB: %E\n", is->the_bfd); 1605 } 1606 1607 free (relocs); 1608 /* Note - we do not free the symbols, 1609 they are now cached in the BFD. */ 1610 } 1611 } 1612 } 1613 } 1614 } 1615 1616 { 1617 int is_ms_arch = 0; 1618 bfd *cur_arch = 0; 1619 lang_input_statement_type *is2; 1620 lang_input_statement_type *is3; 1621 1622 /* Careful - this is a shell script. Watch those dollar signs! */ 1623 /* Microsoft import libraries have every member named the same, 1624 and not in the right order for us to link them correctly. We 1625 must detect these and rename the members so that they'll link 1626 correctly. There are three types of objects: the head, the 1627 thunks, and the sentinel(s). The head is easy; it's the one 1628 with idata2. We assume that the sentinels won't have relocs, 1629 and the thunks will. It's easier than checking the symbol 1630 table for external references. */ 1631 LANG_FOR_EACH_INPUT_STATEMENT (is) 1632 { 1633 if (is->the_bfd->my_archive) 1634 { 1635 char *pnt; 1636 bfd *arch = is->the_bfd->my_archive; 1637 1638 if (cur_arch != arch) 1639 { 1640 cur_arch = arch; 1641 is_ms_arch = 1; 1642 1643 for (is3 = is; 1644 is3 && is3->the_bfd->my_archive == arch; 1645 is3 = (lang_input_statement_type *) is3->next) 1646 { 1647 /* A MS dynamic import library can also contain static 1648 members, so look for the first element with a .dll 1649 extension, and use that for the remainder of the 1650 comparisons. */ 1651 pnt = strrchr (bfd_get_filename (is3->the_bfd), '.'); 1652 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0) 1653 break; 1654 } 1655 1656 if (is3 == NULL) 1657 is_ms_arch = 0; 1658 else 1659 { 1660 /* OK, found one. Now look to see if the remaining 1661 (dynamic import) members use the same name. */ 1662 for (is2 = is; 1663 is2 && is2->the_bfd->my_archive == arch; 1664 is2 = (lang_input_statement_type *) is2->next) 1665 { 1666 /* Skip static members, ie anything with a .obj 1667 extension. */ 1668 pnt = strrchr (bfd_get_filename (is2->the_bfd), '.'); 1669 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0) 1670 continue; 1671 1672 if (filename_cmp (bfd_get_filename (is3->the_bfd), 1673 bfd_get_filename (is2->the_bfd))) 1674 { 1675 is_ms_arch = 0; 1676 break; 1677 } 1678 } 1679 } 1680 } 1681 1682 /* This fragment might have come from an .obj file in a Microsoft 1683 import, and not an actual import record. If this is the case, 1684 then leave the filename alone. */ 1685 pnt = strrchr (bfd_get_filename (is->the_bfd), '.'); 1686 1687 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0)) 1688 { 1689 int idata2 = 0, reloc_count=0; 1690 asection *sec; 1691 char *new_name, seq; 1692 1693 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1694 { 1695 if (strcmp (sec->name, ".idata\$2") == 0) 1696 idata2 = 1; 1697 reloc_count += sec->reloc_count; 1698 } 1699 1700 if (idata2) /* .idata2 is the TOC */ 1701 seq = 'a'; 1702 else if (reloc_count > 0) /* thunks */ 1703 seq = 'b'; 1704 else /* sentinel */ 1705 seq = 'c'; 1706 1707 new_name 1708 = xmalloc (strlen (bfd_get_filename (is->the_bfd)) + 3); 1709 sprintf (new_name, "%s.%c", 1710 bfd_get_filename (is->the_bfd), seq); 1711 is->filename = bfd_set_filename (is->the_bfd, new_name); 1712 free (new_name); 1713 if (!is->filename) 1714 einfo ("%F%P: %pB: %E\n", is->the_bfd); 1715 } 1716 } 1717 } 1718 } 1719 1720 { 1721 /* The following chunk of code tries to identify jump stubs in 1722 import libraries which are dead code and eliminates them 1723 from the final link. For each exported symbol <sym>, there 1724 is a object file in the import library with a .text section 1725 and several .idata\$* sections. The .text section contains the 1726 symbol definition for <sym> which is a jump stub of the form 1727 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition 1728 for __imp_<sym> which is the address of the slot for <sym> in 1729 the import address table. When a symbol is imported explicitly 1730 using __declspec(dllimport) declaration, the compiler generates 1731 a reference to __imp_<sym> which directly resolves to the 1732 symbol in .idata\$5, in which case the jump stub code is not 1733 needed. The following code tries to identify jump stub sections 1734 in import libraries which are not referred to by anyone and 1735 marks them for exclusion from the final link. */ 1736 LANG_FOR_EACH_INPUT_STATEMENT (is) 1737 { 1738 if (is->the_bfd->my_archive) 1739 { 1740 int is_imp = 0; 1741 asection *sec, *stub_sec = NULL; 1742 1743 /* See if this is an import library thunk. */ 1744 for (sec = is->the_bfd->sections; sec; sec = sec->next) 1745 { 1746 if (strncmp (sec->name, ".idata\$", 7) == 0) 1747 is_imp = 1; 1748 /* The section containing the jmp stub has code 1749 and has a reloc. */ 1750 if ((sec->flags & SEC_CODE) && sec->reloc_count) 1751 stub_sec = sec; 1752 } 1753 1754 if (is_imp && stub_sec) 1755 { 1756 asymbol **symbols; 1757 long nsyms, src_count; 1758 struct bfd_link_hash_entry * blhe; 1759 1760 if (!bfd_generic_link_read_symbols (is->the_bfd)) 1761 { 1762 einfo (_("%F%P: %pB: could not read symbols: %E\n"), 1763 is->the_bfd); 1764 return; 1765 } 1766 symbols = bfd_get_outsymbols (is->the_bfd); 1767 nsyms = bfd_get_symcount (is->the_bfd); 1768 1769 for (src_count = 0; src_count < nsyms; src_count++) 1770 { 1771 if (symbols[src_count]->section->id == stub_sec->id) 1772 { 1773 /* This symbol belongs to the section containing 1774 the stub. */ 1775 blhe = bfd_link_hash_lookup (link_info.hash, 1776 symbols[src_count]->name, 1777 FALSE, FALSE, TRUE); 1778 /* If the symbol in the stub section has no other 1779 undefined references, exclude the stub section 1780 from the final link. */ 1781 if (blhe != NULL 1782 && blhe->type == bfd_link_hash_defined 1783 && blhe->u.undef.next == NULL 1784 && blhe != link_info.hash->undefs_tail) 1785 stub_sec->flags |= SEC_EXCLUDE; 1786 } 1787 } 1788 } 1789 } 1790 } 1791 } 1792} 1793 1794static void 1795gld_${EMULATION_NAME}_before_allocation (void) 1796{ 1797#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 1798 /* FIXME: we should be able to set the size of the interworking stub 1799 section. 1800 1801 Here we rummage through the found bfds to collect glue 1802 information. FIXME: should this be based on a command line 1803 option? krk@cygnus.com. */ 1804 { 1805 LANG_FOR_EACH_INPUT_STATEMENT (is) 1806 { 1807 if (! bfd_arm_process_before_allocation 1808 (is->the_bfd, & link_info, support_old_code)) 1809 { 1810 /* xgettext:c-format */ 1811 einfo (_("%P: errors encountered processing file %s for interworking\n"), 1812 is->filename); 1813 } 1814 } 1815 } 1816 1817 /* We have seen it all. Allocate it, and carry on. */ 1818 bfd_arm_allocate_interworking_sections (& link_info); 1819#endif /* TARGET_IS_armpe || TARGET_IS_arm_wince_pe */ 1820 1821 before_allocation_default (); 1822} 1823 1824#ifdef DLL_SUPPORT 1825/* This is called when an input file isn't recognized as a BFD. We 1826 check here for .DEF files and pull them in automatically. */ 1827 1828static int 1829saw_option (char *option) 1830{ 1831 int i; 1832 1833 for (i = 0; init[i].ptr; i++) 1834 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0) 1835 return init[i].inited; 1836 return 0; 1837} 1838#endif /* DLL_SUPPORT */ 1839 1840static bfd_boolean 1841gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1842{ 1843#ifdef DLL_SUPPORT 1844 const char *ext = entry->filename + strlen (entry->filename) - 4; 1845 1846 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0) 1847 { 1848 pe_def_file = def_file_parse (entry->filename, pe_def_file); 1849 1850 if (pe_def_file) 1851 { 1852 int i, buflen=0, len; 1853 char *buf; 1854 1855 for (i = 0; i < pe_def_file->num_exports; i++) 1856 { 1857 len = strlen (pe_def_file->exports[i].internal_name); 1858 if (buflen < len + 2) 1859 buflen = len + 2; 1860 } 1861 1862 buf = xmalloc (buflen); 1863 1864 for (i = 0; i < pe_def_file->num_exports; i++) 1865 { 1866 struct bfd_link_hash_entry *h; 1867 1868 sprintf (buf, "%s%s", U (""), 1869 pe_def_file->exports[i].internal_name); 1870 1871 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); 1872 if (h == (struct bfd_link_hash_entry *) NULL) 1873 einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); 1874 if (h->type == bfd_link_hash_new) 1875 { 1876 h->type = bfd_link_hash_undefined; 1877 h->u.undef.abfd = NULL; 1878 bfd_link_add_undef (link_info.hash, h); 1879 } 1880 } 1881 free (buf); 1882 1883 /* def_file_print (stdout, pe_def_file); */ 1884 if (pe_def_file->is_dll == 1) 1885 link_info.type = type_dll; 1886 1887 if (pe_def_file->base_address != (bfd_vma)(-1)) 1888 { 1889 pe.ImageBase 1890 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase 1891 = init[IMAGEBASEOFF].value 1892 = pe_def_file->base_address; 1893 init[IMAGEBASEOFF].inited = 1; 1894 if (image_base_statement) 1895 image_base_statement->exp 1896 = exp_assign ("__image_base__", exp_intop (pe.ImageBase), 1897 FALSE); 1898 } 1899 1900 if (pe_def_file->stack_reserve != -1 1901 && ! saw_option ("__size_of_stack_reserve__")) 1902 { 1903 pe.SizeOfStackReserve = pe_def_file->stack_reserve; 1904 if (pe_def_file->stack_commit != -1) 1905 pe.SizeOfStackCommit = pe_def_file->stack_commit; 1906 } 1907 if (pe_def_file->heap_reserve != -1 1908 && ! saw_option ("__size_of_heap_reserve__")) 1909 { 1910 pe.SizeOfHeapReserve = pe_def_file->heap_reserve; 1911 if (pe_def_file->heap_commit != -1) 1912 pe.SizeOfHeapCommit = pe_def_file->heap_commit; 1913 } 1914 return TRUE; 1915 } 1916 } 1917#endif 1918 return FALSE; 1919} 1920 1921static bfd_boolean 1922gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) 1923{ 1924#ifdef DLL_SUPPORT 1925#ifdef TARGET_IS_i386pe 1926 pe_dll_id_target ("pei-i386"); 1927#endif 1928#ifdef TARGET_IS_shpe 1929 pe_dll_id_target ("pei-shl"); 1930#endif 1931#ifdef TARGET_IS_armpe 1932 pe_dll_id_target ("pei-arm-little"); 1933#endif 1934#ifdef TARGET_IS_arm_wince_pe 1935 pe_dll_id_target ("pei-arm-wince-little"); 1936#endif 1937 if (pe_bfd_is_dll (entry->the_bfd)) 1938 return pe_implied_import_dll (entry->filename); 1939#endif 1940 return FALSE; 1941} 1942 1943static void 1944gld_${EMULATION_NAME}_finish (void) 1945{ 1946#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) 1947 struct bfd_link_hash_entry * h; 1948 1949 if (thumb_entry_symbol != NULL) 1950 { 1951 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, 1952 FALSE, FALSE, TRUE); 1953 1954 if (h != (struct bfd_link_hash_entry *) NULL 1955 && (h->type == bfd_link_hash_defined 1956 || h->type == bfd_link_hash_defweak) 1957 && h->u.def.section->output_section != NULL) 1958 { 1959 static char buffer[32]; 1960 bfd_vma val; 1961 1962 /* Special procesing is required for a Thumb entry symbol. The 1963 bottom bit of its address must be set. */ 1964 val = (h->u.def.value 1965 + bfd_section_vma (h->u.def.section->output_section) 1966 + h->u.def.section->output_offset); 1967 1968 val |= 1; 1969 1970 /* Now convert this value into a string and store it in entry_symbol 1971 where the lang_finish() function will pick it up. */ 1972 buffer[0] = '0'; 1973 buffer[1] = 'x'; 1974 1975 sprintf_vma (buffer + 2, val); 1976 1977 if (entry_symbol.name != NULL && entry_from_cmdline) 1978 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), 1979 thumb_entry_symbol, entry_symbol.name); 1980 entry_symbol.name = buffer; 1981 } 1982 else 1983 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol); 1984 } 1985#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) */ 1986 1987 finish_default (); 1988 1989#ifdef DLL_SUPPORT 1990 if (bfd_link_pic (&link_info) 1991#if !defined(TARGET_IS_shpe) 1992 || pe_dll_enable_reloc_section 1993 || (!bfd_link_relocatable (&link_info) 1994 && pe_def_file->num_exports != 0) 1995#endif 1996 ) 1997 { 1998 pe_dll_fill_sections (link_info.output_bfd, &link_info); 1999 if (command_line.out_implib_filename 2000 && pe_def_file->num_exports != 0) 2001 pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename, 2002 &link_info); 2003 } 2004#if defined(TARGET_IS_shpe) 2005 /* ARM doesn't need relocs. */ 2006 else 2007 { 2008 pe_exe_fill_sections (link_info.output_bfd, &link_info); 2009 } 2010#endif 2011 2012 if (pe_out_def_filename) 2013 pe_dll_generate_def_file (pe_out_def_filename); 2014#endif /* DLL_SUPPORT */ 2015 2016 /* I don't know where .idata gets set as code, but it shouldn't be. */ 2017 { 2018 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata"); 2019 2020 if (asec) 2021 { 2022 asec->flags &= ~SEC_CODE; 2023 asec->flags |= SEC_DATA; 2024 } 2025 } 2026} 2027 2028 2029/* Place an orphan section. 2030 2031 We use this to put sections in a reasonable place in the file, and 2032 to ensure that they are aligned as required. 2033 2034 We handle grouped sections here as well. A section named .foo\$nn 2035 goes into the output section .foo. All grouped sections are sorted 2036 by name. 2037 2038 Grouped sections for the default sections are handled by the 2039 default linker script using wildcards, and are sorted by 2040 sort_sections. */ 2041 2042static lang_output_section_statement_type * 2043gld_${EMULATION_NAME}_place_orphan (asection *s, 2044 const char *secname, 2045 int constraint) 2046{ 2047 const char *orig_secname = secname; 2048 char *dollar = NULL; 2049 lang_output_section_statement_type *os; 2050 lang_statement_list_type add_child; 2051 lang_output_section_statement_type *match_by_name = NULL; 2052 lang_statement_union_type **pl; 2053 2054 /* Look through the script to see where to place this section. */ 2055 if (!bfd_link_relocatable (&link_info) 2056 && (dollar = strchr (secname, '\$')) != NULL) 2057 { 2058 size_t len = dollar - secname; 2059 char *newname = xmalloc (len + 1); 2060 memcpy (newname, secname, len); 2061 newname[len] = '\0'; 2062 secname = newname; 2063 } 2064 2065 lang_list_init (&add_child); 2066 2067 os = NULL; 2068 if (constraint == 0) 2069 for (os = lang_output_section_find (secname); 2070 os != NULL; 2071 os = next_matching_output_section_statement (os, 0)) 2072 { 2073 /* If we don't match an existing output section, tell 2074 lang_insert_orphan to create a new output section. */ 2075 constraint = SPECIAL; 2076 2077 if (os->bfd_section != NULL 2078 && (os->bfd_section->flags == 0 2079 || ((s->flags ^ os->bfd_section->flags) 2080 & (SEC_LOAD | SEC_ALLOC)) == 0)) 2081 { 2082 /* We already have an output section statement with this 2083 name, and its bfd section has compatible flags. 2084 If the section already exists but does not have any flags set, 2085 then it has been created by the linker, probably as a result of 2086 a --section-start command line switch. */ 2087 lang_add_section (&add_child, s, NULL, os); 2088 break; 2089 } 2090 2091 /* Save unused output sections in case we can match them 2092 against orphans later. */ 2093 if (os->bfd_section == NULL) 2094 match_by_name = os; 2095 } 2096 2097 /* If we didn't match an active output section, see if we matched an 2098 unused one and use that. */ 2099 if (os == NULL && match_by_name) 2100 { 2101 lang_add_section (&match_by_name->children, s, NULL, match_by_name); 2102 return match_by_name; 2103 } 2104 2105 if (os == NULL) 2106 { 2107 static struct orphan_save hold[] = 2108 { 2109 { ".text", 2110 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, 2111 0, 0, 0, 0 }, 2112 { ".idata", 2113 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2114 0, 0, 0, 0 }, 2115 { ".rdata", 2116 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, 2117 0, 0, 0, 0 }, 2118 { ".data", 2119 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, 2120 0, 0, 0, 0 }, 2121 { ".bss", 2122 SEC_ALLOC, 2123 0, 0, 0, 0 } 2124 }; 2125 enum orphan_save_index 2126 { 2127 orphan_text = 0, 2128 orphan_idata, 2129 orphan_rodata, 2130 orphan_data, 2131 orphan_bss 2132 }; 2133 static int orphan_init_done = 0; 2134 struct orphan_save *place; 2135 lang_output_section_statement_type *after; 2136 etree_type *address; 2137 flagword flags; 2138 asection *nexts; 2139 2140 if (!orphan_init_done) 2141 { 2142 struct orphan_save *ho; 2143 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) 2144 if (ho->name != NULL) 2145 { 2146 ho->os = lang_output_section_find (ho->name); 2147 if (ho->os != NULL && ho->os->flags == 0) 2148 ho->os->flags = ho->flags; 2149 } 2150 orphan_init_done = 1; 2151 } 2152 2153 flags = s->flags; 2154 if (!bfd_link_relocatable (&link_info)) 2155 { 2156 nexts = s; 2157 while ((nexts = bfd_get_next_section_by_name (nexts->owner, 2158 nexts))) 2159 if (nexts->output_section == NULL 2160 && (nexts->flags & SEC_EXCLUDE) == 0 2161 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0 2162 && (nexts->owner->flags & DYNAMIC) == 0 2163 && !bfd_input_just_syms (nexts->owner)) 2164 flags = (((flags ^ SEC_READONLY) 2165 | (nexts->flags ^ SEC_READONLY)) 2166 ^ SEC_READONLY); 2167 } 2168 2169 /* Try to put the new output section in a reasonable place based 2170 on the section name and section flags. */ 2171 2172 place = NULL; 2173 if ((flags & SEC_ALLOC) == 0) 2174 ; 2175 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 2176 place = &hold[orphan_bss]; 2177 else if ((flags & SEC_READONLY) == 0) 2178 place = &hold[orphan_data]; 2179 else if ((flags & SEC_CODE) == 0) 2180 { 2181 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata] 2182 : &hold[orphan_rodata]); 2183 } 2184 else 2185 place = &hold[orphan_text]; 2186 2187 after = NULL; 2188 if (place != NULL) 2189 { 2190 if (place->os == NULL) 2191 place->os = lang_output_section_find (place->name); 2192 after = place->os; 2193 if (after == NULL) 2194 after = lang_output_section_find_by_flags (s, flags, &place->os, 2195 NULL); 2196 if (after == NULL) 2197 /* *ABS* is always the first output section statement. */ 2198 after = (void *) lang_os_list.head; 2199 } 2200 2201 /* All sections in an executable must be aligned to a page boundary. 2202 In a relocatable link, just preserve the incoming alignment; the 2203 address is discarded by lang_insert_orphan in that case, anyway. */ 2204 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); 2205 os = lang_insert_orphan (s, secname, constraint, after, place, address, 2206 &add_child); 2207 if (bfd_link_relocatable (&link_info)) 2208 { 2209 os->section_alignment = exp_intop (1U << s->alignment_power); 2210 os->bfd_section->alignment_power = s->alignment_power; 2211 } 2212 } 2213 2214 /* If the section name has a '\$', sort it with the other '\$' 2215 sections. */ 2216 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next) 2217 { 2218 lang_input_section_type *ls; 2219 const char *lname; 2220 2221 if ((*pl)->header.type != lang_input_section_enum) 2222 continue; 2223 2224 ls = &(*pl)->input_section; 2225 2226 lname = bfd_section_name (ls->section); 2227 if (strchr (lname, '\$') != NULL 2228 && (dollar == NULL || strcmp (orig_secname, lname) < 0)) 2229 break; 2230 } 2231 2232 if (add_child.head != NULL) 2233 { 2234 *add_child.tail = *pl; 2235 *pl = add_child.head; 2236 } 2237 2238 return os; 2239} 2240 2241static bfd_boolean 2242gld_${EMULATION_NAME}_open_dynamic_archive 2243 (const char *arch ATTRIBUTE_UNUSED, 2244 search_dirs_type *search, 2245 lang_input_statement_type *entry) 2246{ 2247 static const struct 2248 { 2249 const char * format; 2250 bfd_boolean use_prefix; 2251 } 2252 libname_fmt [] = 2253 { 2254 /* Preferred explicit import library for dll's. */ 2255 { "lib%s.dll.a", FALSE }, 2256 /* Alternate explicit import library for dll's. */ 2257 { "%s.dll.a", FALSE }, 2258 /* "libfoo.a" could be either an import lib or a static lib. 2259 For backwards compatibility, libfoo.a needs to precede 2260 libfoo.dll and foo.dll in the search. */ 2261 { "lib%s.a", FALSE }, 2262 /* The 'native' spelling of an import lib name is "foo.lib". */ 2263 { "%s.lib", FALSE }, 2264 /* PR 22948 - Check for an import library. */ 2265 { "lib%s.lib", FALSE }, 2266#ifdef DLL_SUPPORT 2267 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ 2268 { "%s%s.dll", TRUE }, 2269#endif 2270 /* Try "libfoo.dll" (default preferred dll name). */ 2271 { "lib%s.dll", FALSE }, 2272 /* Finally try 'native' dll name "foo.dll". */ 2273 { "%s.dll", FALSE }, 2274 /* Note: If adding more formats to this table, make sure to check to 2275 see if their length is longer than libname_fmt[0].format, and if 2276 so, update the call to xmalloc() below. */ 2277 { NULL, FALSE } 2278 }; 2279 static unsigned int format_max_len = 0; 2280 const char * filename; 2281 char * full_string; 2282 char * base_string; 2283 unsigned int i; 2284 2285 2286 if (! entry->flags.maybe_archive || entry->flags.full_name_provided) 2287 return FALSE; 2288 2289 filename = entry->filename; 2290 2291 if (format_max_len == 0) 2292 /* We need to allow space in the memory that we are going to allocate 2293 for the characters in the format string. Since the format array is 2294 static we only need to calculate this information once. In theory 2295 this value could also be computed statically, but this introduces 2296 the possibility for a discrepancy and hence a possible memory 2297 corruption. The lengths we compute here will be too long because 2298 they will include any formating characters (%s) in the strings, but 2299 this will not matter. */ 2300 for (i = 0; libname_fmt[i].format; i++) 2301 if (format_max_len < strlen (libname_fmt[i].format)) 2302 format_max_len = strlen (libname_fmt[i].format); 2303 2304 full_string = xmalloc (strlen (search->name) 2305 + strlen (filename) 2306 + format_max_len 2307#ifdef DLL_SUPPORT 2308 + (pe_dll_search_prefix 2309 ? strlen (pe_dll_search_prefix) : 0) 2310#endif 2311 /* Allow for the terminating NUL and for the path 2312 separator character that is inserted between 2313 search->name and the start of the format string. */ 2314 + 2); 2315 2316 sprintf (full_string, "%s/", search->name); 2317 base_string = full_string + strlen (full_string); 2318 2319 for (i = 0; libname_fmt[i].format; i++) 2320 { 2321#ifdef DLL_SUPPORT 2322 if (libname_fmt[i].use_prefix) 2323 { 2324 if (!pe_dll_search_prefix) 2325 continue; 2326 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename); 2327 } 2328 else 2329#endif 2330 sprintf (base_string, libname_fmt[i].format, filename); 2331 2332 if (ldfile_try_open_bfd (full_string, entry)) 2333 break; 2334 } 2335 2336 if (!libname_fmt[i].format) 2337 { 2338 free (full_string); 2339 return FALSE; 2340 } 2341 2342 entry->filename = full_string; 2343 2344 return TRUE; 2345} 2346 2347static int 2348gld_${EMULATION_NAME}_find_potential_libraries 2349 (char *name, lang_input_statement_type *entry) 2350{ 2351 return ldfile_open_file_search (name, entry, "", ".lib"); 2352} 2353 2354static char * 2355gld_${EMULATION_NAME}_get_script (int *isfile) 2356EOF 2357# Scripts compiled in. 2358# sed commands to quote an ld script as a C string. 2359sc="-f stringify.sed" 2360 2361fragment <<EOF 2362{ 2363 *isfile = 0; 2364 2365 if (bfd_link_relocatable (&link_info) && config.build_constructors) 2366 return 2367EOF 2368sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 2369echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c 2370sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 2371echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 2372sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 2373echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 2374sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 2375if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then 2376echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c 2377sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c 2378fi 2379echo ' ; else return' >> e${EMULATION_NAME}.c 2380sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 2381echo '; }' >> e${EMULATION_NAME}.c 2382 2383fragment <<EOF 2384 2385 2386struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 2387{ 2388 gld_${EMULATION_NAME}_before_parse, 2389 syslib_default, 2390 hll_default, 2391 gld_${EMULATION_NAME}_after_parse, 2392 gld_${EMULATION_NAME}_after_open, 2393 after_check_relocs_default, 2394 before_place_orphans_default, 2395 after_allocation_default, 2396 set_output_arch_default, 2397 ldemul_default_target, 2398 gld_${EMULATION_NAME}_before_allocation, 2399 gld_${EMULATION_NAME}_get_script, 2400 "${EMULATION_NAME}", 2401 "${OUTPUT_FORMAT}", 2402 gld_${EMULATION_NAME}_finish, 2403 NULL, /* Create output section statements. */ 2404 gld_${EMULATION_NAME}_open_dynamic_archive, 2405 gld_${EMULATION_NAME}_place_orphan, 2406 gld_${EMULATION_NAME}_set_symbols, 2407 NULL, /* parse_args */ 2408 gld${EMULATION_NAME}_add_options, 2409 gld${EMULATION_NAME}_handle_option, 2410 gld_${EMULATION_NAME}_unrecognized_file, 2411 gld_${EMULATION_NAME}_list_options, 2412 gld_${EMULATION_NAME}_recognized_file, 2413 gld_${EMULATION_NAME}_find_potential_libraries, 2414 NULL, /* new_vers_pattern. */ 2415 NULL, /* extra_map_file_text. */ 2416 ${LDEMUL_EMIT_CTF_EARLY-NULL}, 2417 ${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}, 2418 ${LDEMUL_PRINT_SYMBOL-NULL} 2419}; 2420EOF 2421