ld/emultempl/pep.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 if [ -z "$MACHINE" ]; then
   4   OUTPUT_ARCH=${ARCH}
   5 else
   6   OUTPUT_ARCH=${ARCH}:${MACHINE}
   7 fi
   8
   9 case ${target} in
  10   *-*-cygwin*)
  11     move_default_addr_high=1
  12     ;;
  13   *)
  14     move_default_addr_high=0;
  15     ;;
  16 esac
  17
  18 rm -f e${EMULATION_NAME}.c
  19 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
  20 fragment <<EOF
  21 /* Copyright (C) 2006-2020 Free Software Foundation, Inc.
  22    Written by Kai Tietz, OneVision Software GmbH&CoKg.
  23
  24    This file is part of the GNU Binutils.
  25
  26    This program is free software; you can redistribute it and/or modify
  27    it under the terms of the GNU General Public License as published by
  28    the Free Software Foundation; either version 3 of the License, or
  29    (at your option) any later version.
  30
  31    This program is distributed in the hope that it will be useful,
  32    but WITHOUT ANY WARRANTY; without even the implied warranty of
  33    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34    GNU General Public License for more details.
  35
  36    You should have received a copy of the GNU General Public License
  37    along with this program; if not, write to the Free Software
  38    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  39    MA 02110-1301, USA.  */
  40
  41
  42 /* For WINDOWS_XP64 and higher */
  43 /* Based on pe.em, but modified for 64 bit support.  */
  44
  45 #define TARGET_IS_${EMULATION_NAME}
  46
  47 #define COFF_IMAGE_WITH_PE
  48 #define COFF_WITH_PE
  49 #define COFF_WITH_pex64
  50
  51 #include "sysdep.h"
  52 #include "bfd.h"
  53 #include "bfdlink.h"
  54 #include "ctf-api.h"
  55 #include "getopt.h"
  56 #include "libiberty.h"
  57 #include "filenames.h"
  58 #include "ld.h"
  59 #include "ldmain.h"
  60 #include "ldexp.h"
  61 #include "ldlang.h"
  62 #include "ldfile.h"
  63 #include "ldemul.h"
  64 #include <ldgram.h>
  65 #include "ldlex.h"
  66 #include "ldmisc.h"
  67 #include "ldctor.h"
  68 #include "ldbuildid.h"
  69 #include "coff/internal.h"
  70
  71 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
  72    header in generic PE code.  */
  73 #include "coff/x86_64.h"
  74 #include "coff/pe.h"
  75
  76 /* FIXME: These are BFD internal header files, and we should not be
  77    using it here.  */
  78 #include "../bfd/libcoff.h"
  79 #include "../bfd/libpei.h"
  80
  81 #undef  AOUTSZ
  82 #define AOUTSZ          PEPAOUTSZ
  83 #define PEAOUTHDR       PEPAOUTHDR
  84
  85 #include "deffile.h"
  86 #include "pep-dll.h"
  87 #include "safe-ctype.h"
  88
  89 /* Permit the emulation parameters to override the default section
  90    alignment by setting OVERRIDE_SECTION_ALIGNMENT.  FIXME: This makes
  91    it seem that include/coff/internal.h should not define
  92    PE_DEF_SECTION_ALIGNMENT.  */
  93 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
  94 #undef  PE_DEF_SECTION_ALIGNMENT
  95 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
  96 #endif
  97
  98 #ifdef TARGET_IS_i386pep
  99 #define DLL_SUPPORT
 100 #endif
 101
 102 #if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
 103 #define PE_DEF_SUBSYSTEM                3
 104 #undef NT_EXE_IMAGE_BASE
 105 #define NT_EXE_IMAGE_BASE \
 106   ((bfd_vma) (${move_default_addr_high} ? 0x100400000LL \
 107                                         : 0x400000LL))
 108 #undef NT_DLL_IMAGE_BASE
 109 #define NT_DLL_IMAGE_BASE \
 110   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 111                                         : 0x10000000LL))
 112 #undef NT_DLL_AUTO_IMAGE_BASE
 113 #define NT_DLL_AUTO_IMAGE_BASE \
 114   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 115                                         : 0x61300000LL))
 116 #undef NT_DLL_AUTO_IMAGE_MASK
 117 #define NT_DLL_AUTO_IMAGE_MASK \
 118   ((bfd_vma) (${move_default_addr_high} ? 0x1ffff0000LL \
 119                                         : 0x0ffc0000LL))
 120 #else
 121 #undef  NT_EXE_IMAGE_BASE
 122 #define NT_EXE_IMAGE_BASE \
 123   ((bfd_vma) (${move_default_addr_high} ? 0x100010000LL \
 124                                         : 0x10000LL))
 125 #undef NT_DLL_IMAGE_BASE
 126 #define NT_DLL_IMAGE_BASE \
 127   ((bfd_vma) (${move_default_addr_high} ? 0x110000000LL \
 128                                         : 0x10000000LL))
 129 #undef NT_DLL_AUTO_IMAGE_BASE
 130 #define NT_DLL_AUTO_IMAGE_BASE \
 131   ((bfd_vma) (${move_default_addr_high} ? 0x120000000LL \
 132                                         : 0x61300000LL))
 133 #undef NT_DLL_AUTO_IMAGE_MASK
 134 #define NT_DLL_AUTO_IMAGE_MASK \
 135   ((bfd_vma) (${move_default_addr_high} ? 0x0ffff0000LL \
 136                                         : 0x0ffc0000LL))
 137 #undef  PE_DEF_SECTION_ALIGNMENT
 138 #define PE_DEF_SUBSYSTEM                2
 139 #undef  PE_DEF_FILE_ALIGNMENT
 140 #define PE_DEF_FILE_ALIGNMENT           0x00000200
 141 #define PE_DEF_SECTION_ALIGNMENT        0x00000400
 142 #endif
 143
 144 static struct internal_extra_pe_aouthdr pep;
 145 static int dll;
 146 static int pep_subsystem = ${SUBSYSTEM};
 147 static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
 148 static int support_old_code = 0;
 149 static lang_assignment_statement_type *image_base_statement = 0;
 150 static unsigned short pe_dll_characteristics = 0;
 151 static bfd_boolean insert_timestamp = TRUE;
 152 static const char *emit_build_id;
 153
 154 #ifdef DLL_SUPPORT
 155 static int    pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default).  */
 156 static char * pep_out_def_filename = NULL;
 157 static int    pep_enable_auto_image_base = 0;
 158 static char * pep_dll_search_prefix = NULL;
 159 #endif
 160
 161 extern const char *output_filename;
 162
 163 static int is_underscoring (void)
 164 {
 165   int u = 0;
 166   if (pep_leading_underscore != -1)
 167     return pep_leading_underscore;
 168   if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
 169     bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
 170
 171   if (u == -1)
 172     abort ();
 173   pep_leading_underscore = (u != 0 ? 1 : 0);
 174   return pep_leading_underscore;
 175 }
 176
 177
 178 static void
 179 gld_${EMULATION_NAME}_before_parse (void)
 180 {
 181   is_underscoring ();
 182   ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
 183   output_filename = "${EXECUTABLE_NAME:-a.exe}";
 184 #ifdef DLL_SUPPORT
 185   input_flags.dynamic = TRUE;
 186   config.has_shared = 1;
 187   link_info.pei386_auto_import = 1;
 188   link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2.  */
 189 #endif
 190 }
 191 \f
 192 /* PE format extra command line options.  */
 193
 194 /* Used for setting flags in the PE header.  */
 195 enum options
 196 {
 197   OPTION_BASE_FILE = 300 + 1,
 198   OPTION_DLL,
 199   OPTION_FILE_ALIGNMENT,
 200   OPTION_IMAGE_BASE,
 201   OPTION_MAJOR_IMAGE_VERSION,
 202   OPTION_MAJOR_OS_VERSION,
 203   OPTION_MAJOR_SUBSYSTEM_VERSION,
 204   OPTION_MINOR_IMAGE_VERSION,
 205   OPTION_MINOR_OS_VERSION,
 206   OPTION_MINOR_SUBSYSTEM_VERSION,
 207   OPTION_SECTION_ALIGNMENT,
 208   OPTION_STACK,
 209   OPTION_SUBSYSTEM,
 210   OPTION_HEAP,
 211   OPTION_SUPPORT_OLD_CODE,
 212   OPTION_OUT_DEF,
 213   OPTION_EXPORT_ALL,
 214   OPTION_EXCLUDE_SYMBOLS,
 215   OPTION_EXCLUDE_ALL_SYMBOLS,
 216   OPTION_KILL_ATS,
 217   OPTION_STDCALL_ALIASES,
 218   OPTION_ENABLE_STDCALL_FIXUP,
 219   OPTION_DISABLE_STDCALL_FIXUP,
 220   OPTION_WARN_DUPLICATE_EXPORTS,
 221   OPTION_IMP_COMPAT,
 222   OPTION_ENABLE_AUTO_IMAGE_BASE,
 223   OPTION_DISABLE_AUTO_IMAGE_BASE,
 224   OPTION_DLL_SEARCH_PREFIX,
 225   OPTION_NO_DEFAULT_EXCLUDES,
 226   OPTION_DLL_ENABLE_AUTO_IMPORT,
 227   OPTION_DLL_DISABLE_AUTO_IMPORT,
 228   OPTION_ENABLE_EXTRA_PE_DEBUG,
 229   OPTION_EXCLUDE_LIBS,
 230   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
 231   OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
 232   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
 233   OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
 234   OPTION_USE_NUL_PREFIXED_IMPORT_TABLES,
 235   OPTION_NO_LEADING_UNDERSCORE,
 236   OPTION_LEADING_UNDERSCORE,
 237   OPTION_ENABLE_LONG_SECTION_NAMES,
 238   OPTION_DISABLE_LONG_SECTION_NAMES,
 239   OPTION_HIGH_ENTROPY_VA,
 240   OPTION_DYNAMIC_BASE,
 241   OPTION_FORCE_INTEGRITY,
 242   OPTION_NX_COMPAT,
 243   OPTION_NO_ISOLATION,
 244   OPTION_NO_SEH,
 245   OPTION_NO_BIND,
 246   OPTION_WDM_DRIVER,
 247   OPTION_INSERT_TIMESTAMP,
 248   OPTION_NO_INSERT_TIMESTAMP,
 249   OPTION_TERMINAL_SERVER_AWARE,
 250   OPTION_BUILD_ID,
 251   OPTION_ENABLE_RELOC_SECTION
 252 };
 253
 254 static void
 255 gld${EMULATION_NAME}_add_options
 256   (int ns ATTRIBUTE_UNUSED,
 257    char **shortopts ATTRIBUTE_UNUSED,
 258    int nl,
 259    struct option **longopts,
 260    int nrl ATTRIBUTE_UNUSED,
 261    struct option **really_longopts ATTRIBUTE_UNUSED)
 262 {
 263   static const struct option xtra_long[] =
 264   {
 265     /* PE options */
 266     {"base-file", required_argument, NULL, OPTION_BASE_FILE},
 267     {"dll", no_argument, NULL, OPTION_DLL},
 268     {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
 269     {"heap", required_argument, NULL, OPTION_HEAP},
 270     {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
 271     {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
 272     {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
 273     {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
 274     {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
 275     {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
 276     {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
 277     {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
 278     {"stack", required_argument, NULL, OPTION_STACK},
 279     {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
 280     {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
 281     {"use-nul-prefixed-import-tables", no_argument, NULL,
 282      OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
 283     {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
 284     {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
 285 #ifdef DLL_SUPPORT
 286     /* getopt allows abbreviations, so we do this to stop it
 287        from treating -o as an abbreviation for this option.  */
 288     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 289     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 290     {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
 291     {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
 292     {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
 293     {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
 294     {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
 295     {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
 296     {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
 297     {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
 298     {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
 299     {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
 300     /* getopt() allows abbreviations, so we do this to stop it from
 301        treating -c as an abbreviation for these --compat-implib.  */
 302     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 303     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 304     {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
 305     {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
 306     {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
 307     {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
 308     {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
 309     {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
 310     {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
 311     {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
 312     {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
 313     {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
 314 #endif
 315     {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
 316     {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
 317     {"high-entropy-va", no_argument, NULL, OPTION_HIGH_ENTROPY_VA},
 318     {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
 319     {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
 320     {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
 321     {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
 322     {"no-seh", no_argument, NULL, OPTION_NO_SEH},
 323     {"no-bind", no_argument, NULL, OPTION_NO_BIND},
 324     {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
 325     {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
 326     {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
 327     {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
 328     {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
 329     {"enable-reloc-section", no_argument, NULL, OPTION_ENABLE_RELOC_SECTION},
 330     {NULL, no_argument, NULL, 0}
 331   };
 332
 333   *longopts
 334     = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
 335   memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
 336 }
 337
 338 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
 339    parameters which may be input from the command line.  */
 340
 341 typedef struct
 342 {
 343   void *ptr;
 344   int size;
 345   bfd_vma value;
 346   char *symbol;
 347   int inited;
 348   /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
 349      C visible symbols can be prefixed by underscore dependent on target's
 350      settings.  */
 351   bfd_boolean is_c_symbol;
 352 } definfo;
 353
 354 #define GET_INIT_SYMBOL_NAME(IDX) \
 355   (init[(IDX)].symbol \
 356    + ((!init[(IDX)].is_c_symbol || is_underscoring () == 1) ? 0 : 1))
 357
 358 /* Decorates the C visible symbol by underscore, if target requires.  */
 359 #define U(CSTR) \
 360   ((is_underscoring () == 0) ? CSTR : "_" CSTR)
 361
 362 #define D(field,symbol,def,usc)  {&pep.field, sizeof (pep.field), def, symbol, 0, usc}
 363
 364 static definfo init[] =
 365 {
 366   /* imagebase must be first */
 367 #define IMAGEBASEOFF 0
 368   D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
 369 #define DLLOFF 1
 370   {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
 371 #define MSIMAGEBASEOFF  2
 372   D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
 373   D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
 374   D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
 375   D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
 376   D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
 377   D(MajorImageVersion,"__major_image_version__", 0, FALSE),
 378   D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
 379   D(MajorSubsystemVersion,"__major_subsystem_version__", 5, FALSE),
 380   D(MinorSubsystemVersion,"__minor_subsystem_version__", 2, FALSE),
 381   D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
 382   D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
 383   D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
 384   D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
 385   D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
 386   D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
 387   D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
 388   { NULL, 0, 0, NULL, 0, FALSE}
 389 };
 390
 391
 392 static void
 393 gld_${EMULATION_NAME}_list_options (FILE *file)
 394 {
 395   fprintf (file, _("  --base_file <basefile>             Generate a base file for relocatable DLLs\n"));
 396   fprintf (file, _("  --dll                              Set image base to the default for DLLs\n"));
 397   fprintf (file, _("  --file-alignment <size>            Set file alignment\n"));
 398   fprintf (file, _("  --heap <size>                      Set initial size of the heap\n"));
 399   fprintf (file, _("  --image-base <address>             Set start address of the executable\n"));
 400   fprintf (file, _("  --major-image-version <number>     Set version number of the executable\n"));
 401   fprintf (file, _("  --major-os-version <number>        Set minimum required OS version\n"));
 402   fprintf (file, _("  --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
 403   fprintf (file, _("  --minor-image-version <number>     Set revision number of the executable\n"));
 404   fprintf (file, _("  --minor-os-version <number>        Set minimum required OS revision\n"));
 405   fprintf (file, _("  --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
 406   fprintf (file, _("  --section-alignment <size>         Set section alignment\n"));
 407   fprintf (file, _("  --stack <size>                     Set size of the initial stack\n"));
 408   fprintf (file, _("  --subsystem <name>[:<version>]     Set required OS subsystem [& version]\n"));
 409   fprintf (file, _("  --support-old-code                 Support interworking with old code\n"));
 410   fprintf (file, _("  --[no-]leading-underscore          Set explicit symbol underscore prefix mode\n"));
 411   fprintf (file, _("  --[no-]insert-timestamp            Use a real timestamp rather than zero (default)\n"));
 412   fprintf (file, _("                                     This makes binaries non-deterministic\n"));
 413 #ifdef DLL_SUPPORT
 414   fprintf (file, _("  --add-stdcall-alias                Export symbols with and without @nn\n"));
 415   fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
 416   fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
 417   fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
 418   fprintf (file, _("  --exclude-all-symbols              Exclude all symbols from automatic export\n"));
 419   fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
 420   fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
 421   fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
 422   fprintf (file, _("                                     export, place into import library instead\n"));
 423   fprintf (file, _("  --export-all-symbols               Automatically export all globals to DLL\n"));
 424   fprintf (file, _("  --kill-at                          Remove @nn from exported symbols\n"));
 425   fprintf (file, _("  --output-def <file>                Generate a .DEF file for the built DLL\n"));
 426   fprintf (file, _("  --warn-duplicate-exports           Warn about duplicate exports\n"));
 427   fprintf (file, _("  --compat-implib                    Create backward compatible import libs;\n\
 428                                        create __imp_<SYMBOL> as well\n"));
 429   fprintf (file, _("  --enable-auto-image-base           Automatically choose image base for DLLs\n\
 430                                        unless user specifies one\n"));
 431   fprintf (file, _("  --disable-auto-image-base          Do not auto-choose image base (default)\n"));
 432   fprintf (file, _("  --dll-search-prefix=<string>       When linking dynamically to a dll without\n\
 433                                        an importlib, use <string><basename>.dll\n\
 434                                        in preference to lib<basename>.dll \n"));
 435   fprintf (file, _("  --enable-auto-import               Do sophisticated linking of _sym to\n\
 436                                        __imp_sym for DATA references\n"));
 437   fprintf (file, _("  --disable-auto-import              Do not auto-import DATA items from DLLs\n"));
 438   fprintf (file, _("  --enable-runtime-pseudo-reloc      Work around auto-import limitations by\n\
 439                                        adding pseudo-relocations resolved at\n\
 440                                        runtime\n"));
 441   fprintf (file, _("  --disable-runtime-pseudo-reloc     Do not add runtime pseudo-relocations for\n\
 442                                        auto-imported DATA\n"));
 443   fprintf (file, _("  --enable-extra-pep-debug            Enable verbose debug output when building\n\
 444                                        or linking to DLLs (esp. auto-import)\n"));
 445   fprintf (file, _("  --enable-long-section-names        Use long COFF section names even in\n\
 446                                        executable image files\n"));
 447   fprintf (file, _("  --disable-long-section-names       Never use long COFF section names, even\n\
 448                                        in object files\n"));
 449   fprintf (file, _("  --high-entropy-va                  Image is compatible with 64-bit address space\n\
 450                                        layout randomization (ASLR)\n"));
 451   fprintf (file, _("  --dynamicbase                      Image base address may be relocated using\n\
 452                                        address space layout randomization (ASLR)\n"));
 453   fprintf (file, _("  --enable-reloc-section             Create the base relocation table\n"));
 454   fprintf (file, _("  --forceinteg               Code integrity checks are enforced\n"));
 455   fprintf (file, _("  --nxcompat                 Image is compatible with data execution prevention\n"));
 456   fprintf (file, _("  --no-isolation             Image understands isolation but do not isolate the image\n"));
 457   fprintf (file, _("  --no-seh                   Image does not use SEH; no SE handler may\n\
 458                                        be called in this image\n"));
 459   fprintf (file, _("  --no-bind                  Do not bind this image\n"));
 460   fprintf (file, _("  --wdmdriver                Driver uses the WDM model\n"));
 461   fprintf (file, _("  --tsaware                  Image is Terminal Server aware\n"));
 462   fprintf (file, _("  --build-id[=STYLE]         Generate build ID\n"));
 463 #endif
 464 }
 465
 466
 467 static void
 468 set_pep_name (char *name, bfd_vma val)
 469 {
 470   int i;
 471   is_underscoring ();
 472   /* Find the name and set it.  */
 473   for (i = 0; init[i].ptr; i++)
 474     {
 475       if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
 476         {
 477           init[i].value = val;
 478           init[i].inited = 1;
 479           if (strcmp (name,"__image_base__") == 0)
 480             set_pep_name (U ("__ImageBase"), val);
 481           return;
 482         }
 483     }
 484   abort ();
 485 }
 486
 487 static void
 488 set_entry_point (void)
 489 {
 490   const char *entry;
 491   const char *initial_symbol_char;
 492   int i;
 493
 494   static const struct
 495   {
 496     const int value;
 497     const char *entry;
 498   }
 499   v[] =
 500     {
 501       { 1, "NtProcessStartup"  },
 502       { 2, "WinMainCRTStartup" },
 503       { 3, "mainCRTStartup"    },
 504       { 7, "__PosixProcessStartup" },
 505       { 9, "WinMainCRTStartup" },
 506       {14, "mainCRTStartup"    },
 507       { 0, NULL          }
 508     };
 509
 510   /* Entry point name for arbitrary subsystem numbers.  */
 511   static const char default_entry[] = "mainCRTStartup";
 512
 513   if (bfd_link_pic (&link_info) || dll)
 514     {
 515       entry = "DllMainCRTStartup";
 516     }
 517   else
 518     {
 519       for (i = 0; v[i].entry; i++)
 520         if (v[i].value == pep_subsystem)
 521           break;
 522
 523       /* If no match, use the default.  */
 524       if (v[i].entry != NULL)
 525         entry = v[i].entry;
 526       else
 527         entry = default_entry;
 528     }
 529
 530   /* Now we check target's default for getting proper symbol_char.  */
 531   initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
 532
 533   if (*initial_symbol_char != '\0')
 534     {
 535       char *alc_entry;
 536
 537       /* lang_default_entry expects its argument to be permanently
 538          allocated, so we don't free this string.  */
 539       alc_entry = xmalloc (strlen (initial_symbol_char)
 540                            + strlen (entry)
 541                            + 1);
 542       strcpy (alc_entry, initial_symbol_char);
 543       strcat (alc_entry, entry);
 544       entry = alc_entry;
 545     }
 546
 547   lang_default_entry (entry);
 548 }
 549
 550 static void
 551 set_pep_subsystem (void)
 552 {
 553   const char *sver;
 554   char *end;
 555   int len;
 556   int i;
 557   unsigned long temp_subsystem;
 558   static const struct
 559     {
 560       const char *name;
 561       const int value;
 562     }
 563   v[] =
 564     {
 565       { "native",  1 },
 566       { "windows", 2 },
 567       { "console", 3 },
 568       { "posix",   7 },
 569       { "wince",   9 },
 570       { "xbox",   14 },
 571       { NULL, 0 }
 572     };
 573
 574   /* Check for the presence of a version number.  */
 575   sver = strchr (optarg, ':');
 576   if (sver == NULL)
 577     len = strlen (optarg);
 578   else
 579     {
 580       len = sver - optarg;
 581       set_pep_name ("__major_subsystem_version__",
 582                     strtoul (sver + 1, &end, 0));
 583       if (*end == '.')
 584         set_pep_name ("__minor_subsystem_version__",
 585                       strtoul (end + 1, &end, 0));
 586       if (*end != '\0')
 587         einfo (_("%P: warning: bad version number in -subsystem option\n"));
 588     }
 589
 590   /* Check for numeric subsystem.  */
 591   temp_subsystem = strtoul (optarg, & end, 0);
 592   if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
 593     {
 594       /* Search list for a numeric match to use its entry point.  */
 595       for (i = 0; v[i].name; i++)
 596         if (v[i].value == (int) temp_subsystem)
 597           break;
 598
 599       /* Use this subsystem.  */
 600       pep_subsystem = (int) temp_subsystem;
 601     }
 602   else
 603     {
 604       /* Search for subsystem by name.  */
 605       for (i = 0; v[i].name; i++)
 606         if (strncmp (optarg, v[i].name, len) == 0
 607             && v[i].name[len] == '\0')
 608           break;
 609
 610       if (v[i].name == NULL)
 611         {
 612           einfo (_("%F%P: invalid subsystem type %s\n"), optarg);
 613           return;
 614         }
 615
 616       pep_subsystem = v[i].value;
 617     }
 618
 619   set_pep_name ("__subsystem__", pep_subsystem);
 620
 621   return;
 622 }
 623
 624
 625 static void
 626 set_pep_value (char *name)
 627 {
 628   char *end;
 629
 630   set_pep_name (name,  (bfd_vma) strtoull (optarg, &end, 0));
 631
 632   if (end == optarg)
 633     einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
 634
 635   optarg = end;
 636 }
 637
 638
 639 static void
 640 set_pep_stack_heap (char *resname, char *comname)
 641 {
 642   set_pep_value (resname);
 643
 644   if (*optarg == ',')
 645     {
 646       optarg++;
 647       set_pep_value (comname);
 648     }
 649   else if (*optarg)
 650     einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg);
 651 }
 652
 653 #define DEFAULT_BUILD_ID_STYLE  "md5"
 654
 655 static bfd_boolean
 656 gld${EMULATION_NAME}_handle_option (int optc)
 657 {
 658   is_underscoring ();
 659   switch (optc)
 660     {
 661     default:
 662       return FALSE;
 663
 664     case OPTION_BASE_FILE:
 665       link_info.base_file = fopen (optarg, FOPEN_WB);
 666       if (link_info.base_file == NULL)
 667         einfo (_("%F%P: cannot open base file %s\n"), optarg);
 668       break;
 669
 670       /* PE options.  */
 671     case OPTION_HEAP:
 672       set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
 673       break;
 674     case OPTION_STACK:
 675       set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
 676       break;
 677     case OPTION_SUBSYSTEM:
 678       set_pep_subsystem ();
 679       break;
 680     case OPTION_MAJOR_OS_VERSION:
 681       set_pep_value ("__major_os_version__");
 682       break;
 683     case OPTION_MINOR_OS_VERSION:
 684       set_pep_value ("__minor_os_version__");
 685       break;
 686     case OPTION_MAJOR_SUBSYSTEM_VERSION:
 687       set_pep_value ("__major_subsystem_version__");
 688       break;
 689     case OPTION_MINOR_SUBSYSTEM_VERSION:
 690       set_pep_value ("__minor_subsystem_version__");
 691       break;
 692     case OPTION_MAJOR_IMAGE_VERSION:
 693       set_pep_value ("__major_image_version__");
 694       break;
 695     case OPTION_MINOR_IMAGE_VERSION:
 696       set_pep_value ("__minor_image_version__");
 697       break;
 698     case OPTION_FILE_ALIGNMENT:
 699       set_pep_value ("__file_alignment__");
 700       break;
 701     case OPTION_SECTION_ALIGNMENT:
 702       set_pep_value ("__section_alignment__");
 703       break;
 704     case OPTION_DLL:
 705       set_pep_name ("__dll__", 1);
 706       break;
 707     case OPTION_IMAGE_BASE:
 708       set_pep_value ("__image_base__");
 709       break;
 710     case OPTION_SUPPORT_OLD_CODE:
 711       support_old_code = 1;
 712       break;
 713     case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
 714       pep_use_nul_prefixed_import_tables = TRUE;
 715       break;
 716     case OPTION_NO_LEADING_UNDERSCORE:
 717       pep_leading_underscore = 0;
 718       break;
 719     case OPTION_LEADING_UNDERSCORE:
 720       pep_leading_underscore = 1;
 721       break;
 722     case OPTION_INSERT_TIMESTAMP:
 723       insert_timestamp = TRUE;
 724       break;
 725     case OPTION_NO_INSERT_TIMESTAMP:
 726       insert_timestamp = FALSE;
 727       break;
 728 #ifdef DLL_SUPPORT
 729     case OPTION_OUT_DEF:
 730       pep_out_def_filename = xstrdup (optarg);
 731       break;
 732     case OPTION_EXPORT_ALL:
 733       pep_dll_export_everything = 1;
 734       break;
 735     case OPTION_EXCLUDE_SYMBOLS:
 736       pep_dll_add_excludes (optarg, EXCLUDESYMS);
 737       break;
 738     case OPTION_EXCLUDE_ALL_SYMBOLS:
 739       pep_dll_exclude_all_symbols = 1;
 740       break;
 741     case OPTION_EXCLUDE_LIBS:
 742       pep_dll_add_excludes (optarg, EXCLUDELIBS);
 743       break;
 744     case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
 745       pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
 746       break;
 747     case OPTION_KILL_ATS:
 748       pep_dll_kill_ats = 1;
 749       break;
 750     case OPTION_STDCALL_ALIASES:
 751       pep_dll_stdcall_aliases = 1;
 752       break;
 753     case OPTION_ENABLE_STDCALL_FIXUP:
 754       pep_enable_stdcall_fixup = 1;
 755       break;
 756     case OPTION_DISABLE_STDCALL_FIXUP:
 757       pep_enable_stdcall_fixup = 0;
 758       break;
 759     case OPTION_WARN_DUPLICATE_EXPORTS:
 760       pep_dll_warn_dup_exports = 1;
 761       break;
 762     case OPTION_IMP_COMPAT:
 763       pep_dll_compat_implib = 1;
 764       break;
 765     case OPTION_ENABLE_AUTO_IMAGE_BASE:
 766       pep_enable_auto_image_base = 1;
 767       break;
 768     case OPTION_DISABLE_AUTO_IMAGE_BASE:
 769       pep_enable_auto_image_base = 0;
 770       break;
 771     case OPTION_DLL_SEARCH_PREFIX:
 772       pep_dll_search_prefix = xstrdup (optarg);
 773       break;
 774     case OPTION_NO_DEFAULT_EXCLUDES:
 775       pep_dll_do_default_excludes = 0;
 776       break;
 777     case OPTION_DLL_ENABLE_AUTO_IMPORT:
 778       link_info.pei386_auto_import = 1;
 779       break;
 780     case OPTION_DLL_DISABLE_AUTO_IMPORT:
 781       link_info.pei386_auto_import = 0;
 782       break;
 783     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
 784       link_info.pei386_runtime_pseudo_reloc = 2;
 785       break;
 786     case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
 787       link_info.pei386_runtime_pseudo_reloc = 0;
 788       break;
 789     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
 790       link_info.pei386_runtime_pseudo_reloc = 2;
 791       break;
 792     case OPTION_ENABLE_EXTRA_PE_DEBUG:
 793       pep_dll_extra_pe_debug = 1;
 794       break;
 795 #endif
 796     case OPTION_ENABLE_LONG_SECTION_NAMES:
 797       pep_use_coff_long_section_names = 1;
 798       break;
 799     case OPTION_DISABLE_LONG_SECTION_NAMES:
 800       pep_use_coff_long_section_names = 0;
 801       break;
 802     /*  Get DLLCharacteristics bits  */
 803     case OPTION_HIGH_ENTROPY_VA:
 804       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA;
 805       /* fall through */
 806     case OPTION_DYNAMIC_BASE:
 807       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
 808       /* fall through */
 809     case OPTION_ENABLE_RELOC_SECTION:
 810       pep_dll_enable_reloc_section = 1;
 811       break;
 812     case OPTION_FORCE_INTEGRITY:
 813       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
 814       break;
 815     case OPTION_NX_COMPAT:
 816       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
 817       break;
 818     case OPTION_NO_ISOLATION:
 819       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
 820       break;
 821     case OPTION_NO_SEH:
 822       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
 823       break;
 824     case OPTION_NO_BIND:
 825       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
 826       break;
 827     case OPTION_WDM_DRIVER:
 828       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
 829       break;
 830     case OPTION_TERMINAL_SERVER_AWARE:
 831       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
 832       break;
 833     case OPTION_BUILD_ID:
 834       if (emit_build_id != NULL)
 835         {
 836           free ((char *) emit_build_id);
 837           emit_build_id = NULL;
 838         }
 839       if (optarg == NULL)
 840         optarg = DEFAULT_BUILD_ID_STYLE;
 841       if (strcmp (optarg, "none"))
 842         emit_build_id = xstrdup (optarg);
 843       break;
 844     }
 845
 846   /*  Set DLLCharacteristics bits  */
 847   set_pep_name ("__dll_characteristics__", pe_dll_characteristics);
 848
 849   return TRUE;
 850 }
 851 \f
 852
 853 #ifdef DLL_SUPPORT
 854 static unsigned long
 855 strhash (const char *str)
 856 {
 857   const unsigned char *s;
 858   unsigned long hash;
 859   unsigned int c;
 860   unsigned int len;
 861
 862   hash = 0;
 863   len = 0;
 864   s = (const unsigned char *) str;
 865   while ((c = *s++) != '\0')
 866     {
 867       hash += c + (c << 17);
 868       hash ^= hash >> 2;
 869       ++len;
 870     }
 871   hash += len + (len << 17);
 872   hash ^= hash >> 2;
 873
 874   return hash;
 875 }
 876
 877 /* Use the output file to create a image base for relocatable DLLs.  */
 878
 879 static bfd_vma
 880 compute_dll_image_base (const char *ofile)
 881 {
 882   bfd_vma hash = (bfd_vma) strhash (ofile);
 883   return NT_DLL_AUTO_IMAGE_BASE + ((hash << 16) & NT_DLL_AUTO_IMAGE_MASK);
 884 }
 885 #endif
 886
 887 /* Assign values to the special symbols before the linker script is
 888    read.  */
 889
 890 static void
 891 gld_${EMULATION_NAME}_set_symbols (void)
 892 {
 893   /* Run through and invent symbols for all the
 894      names and insert the defaults.  */
 895   int j;
 896
 897   is_underscoring ();
 898
 899   if (!init[IMAGEBASEOFF].inited)
 900     {
 901       if (bfd_link_relocatable (&link_info))
 902         init[IMAGEBASEOFF].value = 0;
 903       else if (init[DLLOFF].value || bfd_link_dll (&link_info))
 904         {
 905 #ifdef DLL_SUPPORT
 906           init[IMAGEBASEOFF].value = (pep_enable_auto_image_base
 907                                       ? compute_dll_image_base (output_filename)
 908                                       : NT_DLL_IMAGE_BASE);
 909 #else
 910           init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
 911 #endif
 912         }
 913       else
 914         init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
 915       init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
 916     }
 917
 918   /* Don't do any symbol assignments if this is a relocatable link.  */
 919   if (bfd_link_relocatable (&link_info))
 920     return;
 921
 922   /* Glue the assignments into the abs section.  */
 923   push_stat_ptr (&abs_output_section->children);
 924
 925   for (j = 0; init[j].ptr; j++)
 926     {
 927       bfd_vma val = init[j].value;
 928       lang_assignment_statement_type *rv;
 929
 930       rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
 931                                             exp_intop (val), FALSE));
 932       if (init[j].size == sizeof (short))
 933         *(short *) init[j].ptr = (short) val;
 934       else if (init[j].size == sizeof (int))
 935         *(int *) init[j].ptr = (int) val;
 936       else if (init[j].size == sizeof (long))
 937         *(long *) init[j].ptr = (long) val;
 938       /* This might be a long long or other special type.  */
 939       else if (init[j].size == sizeof (bfd_vma))
 940         *(bfd_vma *) init[j].ptr = val;
 941       else      abort ();
 942       if (j == IMAGEBASEOFF)
 943         image_base_statement = rv;
 944     }
 945   /* Restore the pointer.  */
 946   pop_stat_ptr ();
 947
 948   if (pep.FileAlignment > pep.SectionAlignment)
 949     {
 950       einfo (_("%P: warning, file alignment > section alignment\n"));
 951     }
 952 }
 953
 954 /* This is called after the linker script and the command line options
 955    have been read.  */
 956
 957 static void
 958 gld_${EMULATION_NAME}_after_parse (void)
 959 {
 960   /* PR ld/6744:  Warn the user if they have used an ELF-only
 961      option hoping it will work on PE+.  */
 962   if (link_info.export_dynamic)
 963     einfo (_("%P: warning: --export-dynamic is not supported for PE+ "
 964       "targets, did you mean --export-all-symbols?\n"));
 965
 966   set_entry_point ();
 967
 968   after_parse_default ();
 969 }
 970
 971 #ifdef DLL_SUPPORT
 972 static struct bfd_link_hash_entry *pep_undef_found_sym;
 973
 974 static bfd_boolean
 975 pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
 976 {
 977   int sl;
 978   char *string = inf;
 979   const char *hs = h->root.string;
 980
 981   sl = strlen (string);
 982   if (h->type == bfd_link_hash_defined
 983       && ((*hs == '@' && *string == '_'
 984                    && strncmp (hs + 1, string + 1, sl - 1) == 0)
 985                   || strncmp (hs, string, sl) == 0)
 986       && h->root.string[sl] == '@')
 987     {
 988       pep_undef_found_sym = h;
 989       return FALSE;
 990     }
 991   return TRUE;
 992 }
 993
 994 static void
 995 pep_fixup_stdcalls (void)
 996 {
 997   static int gave_warning_message = 0;
 998   struct bfd_link_hash_entry *undef, *sym;
 999
1000   if (pep_dll_extra_pe_debug)
1001     printf ("%s\n", __FUNCTION__);
1002
1003   for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1004     if (undef->type == bfd_link_hash_undefined)
1005       {
1006         char* at = strchr (undef->root.string, '@');
1007         int lead_at = (*undef->root.string == '@');
1008         if (lead_at)
1009           at = strchr (undef->root.string + 1, '@');
1010         if (at || lead_at)
1011           {
1012             /* The symbol is a stdcall symbol, so let's look for a
1013                cdecl symbol with the same name and resolve to that.  */
1014             char *cname = xstrdup (undef->root.string);
1015
1016             if (lead_at)
1017               *cname = '_';
1018             at = strchr (cname, '@');
1019             if (at)
1020               *at = 0;
1021             sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1022
1023             if (sym && sym->type == bfd_link_hash_defined)
1024               {
1025                 undef->type = bfd_link_hash_defined;
1026                 undef->u.def.value = sym->u.def.value;
1027                 undef->u.def.section = sym->u.def.section;
1028
1029                 if (pep_enable_stdcall_fixup == -1)
1030                   {
1031                     einfo (_("warning: resolving %s by linking to %s\n"),
1032                            undef->root.string, cname);
1033                     if (! gave_warning_message)
1034                       {
1035                         gave_warning_message = 1;
1036                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1037                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1038                       }
1039                   }
1040               }
1041           }
1042         else
1043           {
1044             /* The symbol is a cdecl symbol, so we look for stdcall
1045                symbols - which means scanning the whole symbol table.  */
1046             pep_undef_found_sym = 0;
1047             bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
1048                                     (char *) undef->root.string);
1049             sym = pep_undef_found_sym;
1050             if (sym)
1051               {
1052                 undef->type = bfd_link_hash_defined;
1053                 undef->u.def.value = sym->u.def.value;
1054                 undef->u.def.section = sym->u.def.section;
1055
1056                 if (pep_enable_stdcall_fixup == -1)
1057                   {
1058                     einfo (_("warning: resolving %s by linking to %s\n"),
1059                            undef->root.string, sym->root.string);
1060                     if (! gave_warning_message)
1061                       {
1062                         gave_warning_message = 1;
1063                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1064                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1065                       }
1066                   }
1067               }
1068           }
1069       }
1070 }
1071
1072 static void
1073 make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
1074 {
1075   struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1076   char addend[8];
1077   bfd_vma _addend = 0;
1078   int suc = 0;
1079
1080   if (pep_dll_extra_pe_debug)
1081     printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1082             (unsigned long) rel->address, (long) rel->addend);
1083
1084   memset (addend, 0, sizeof (addend));
1085   switch ((rel->howto->bitsize))
1086     {
1087     case 8:
1088       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
1089       if (suc && rel->howto->pc_relative)
1090         _addend = bfd_get_signed_8 (s->owner, addend);
1091       else if (suc)
1092         _addend = bfd_get_8 (s->owner, addend);
1093       break;
1094     case 16:
1095       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
1096       if (suc && rel->howto->pc_relative)
1097         _addend = bfd_get_signed_16 (s->owner, addend);
1098       else if (suc)
1099         _addend = bfd_get_16 (s->owner, addend);
1100       break;
1101     case 32:
1102       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
1103       if (suc && rel->howto->pc_relative)
1104         _addend = bfd_get_signed_32 (s->owner, addend);
1105       else if (suc)
1106         _addend = bfd_get_32 (s->owner, addend);
1107       break;
1108     case 64:
1109       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
1110       if (suc)
1111         _addend = bfd_get_64 (s->owner, addend);
1112       break;
1113     }
1114   if (! suc)
1115     einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
1116            s->owner, s, rel->address);
1117
1118   if (pep_dll_extra_pe_debug)
1119     {
1120       printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx",
1121               (long) _addend, (long) rel->addend, (long) rel->address);
1122       if (rel->howto->pc_relative)
1123         printf (" pcrel");
1124       printf (" %d bit rel.\n", (int) rel->howto->bitsize);
1125     }
1126
1127   pep_create_import_fixup (rel, s, _addend, name, symname);
1128 }
1129
1130 static bfd_boolean
1131 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1132 {
1133   printf ("+%s\n", h->string);
1134
1135   return TRUE;
1136 }
1137 #endif /* DLL_SUPPORT */
1138
1139 static void
1140 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1141 {
1142   int *found = (int *) obj;
1143
1144   if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1145     *found = 1;
1146 }
1147
1148 static bfd_boolean
1149 pecoff_checksum_contents (bfd *abfd,
1150                           void (*process) (const void *, size_t, void *),
1151                           void *arg)
1152 {
1153   file_ptr filepos = (file_ptr) 0;
1154
1155   while (1)
1156     {
1157       unsigned char b;
1158       int status;
1159
1160       if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1161         return 0;
1162
1163       status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1164       if (status < 1)
1165         {
1166           break;
1167         }
1168
1169       (*process) (&b, 1, arg);
1170       filepos += 1;
1171     }
1172
1173   return TRUE;
1174 }
1175
1176 static bfd_boolean
1177 write_build_id (bfd *abfd)
1178 {
1179   struct pe_tdata *t = pe_data (abfd);
1180   asection *asec;
1181   struct bfd_link_order *link_order = NULL;
1182   unsigned char *contents;
1183   bfd_size_type size;
1184   bfd_size_type build_id_size;
1185   unsigned char *build_id;
1186
1187   /* Find the section the .buildid output section has been merged info.  */
1188   for (asec = abfd->sections; asec != NULL; asec = asec->next)
1189     {
1190       struct bfd_link_order *l = NULL;
1191       for (l = asec->map_head.link_order; l != NULL; l = l->next)
1192         {
1193           if (l->type == bfd_indirect_link_order)
1194             {
1195               if (l->u.indirect.section == t->build_id.sec)
1196                 {
1197                   link_order = l;
1198                   break;
1199                 }
1200             }
1201         }
1202
1203       if (link_order)
1204         break;
1205     }
1206
1207   if (!link_order)
1208     {
1209       einfo (_("%P: warning: .buildid section discarded,"
1210                " --build-id ignored\n"));
1211       return TRUE;
1212     }
1213
1214   if (t->build_id.sec->contents == NULL)
1215     t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1216   contents = t->build_id.sec->contents;
1217   size = t->build_id.sec->size;
1218
1219   build_id_size = compute_build_id_size (t->build_id.style);
1220   build_id = xmalloc (build_id_size);
1221   generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1222
1223   bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1224
1225   /* Construct a debug directory entry which points to an immediately following CodeView record.  */
1226   struct internal_IMAGE_DEBUG_DIRECTORY idd;
1227   idd.Characteristics = 0;
1228   idd.TimeDateStamp = 0;
1229   idd.MajorVersion = 0;
1230   idd.MinorVersion = 0;
1231   idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1232   idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1233   idd.AddressOfRawData = asec->vma - ib + link_order->offset
1234     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1235   idd.PointerToRawData = asec->filepos + link_order->offset
1236     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1237
1238   struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1239   _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1240
1241   /* Write the debug directory enttry */
1242   if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1243     return 0;
1244
1245   if (bfd_bwrite (contents, size, abfd) != size)
1246     return 0;
1247
1248   /* Construct the CodeView record.  */
1249   CODEVIEW_INFO cvinfo;
1250   cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1251   cvinfo.Age = 1;
1252
1253   /* Zero pad or truncate the generated build_id to fit in the CodeView record.  */
1254   memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1255   memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1256           ? CV_INFO_SIGNATURE_LENGTH :  build_id_size);
1257
1258   free (build_id);
1259
1260   /* Write the codeview record.  */
1261   if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1262     return 0;
1263
1264   /* Record the location of the debug directory in the data directory.  */
1265   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1266     = asec->vma  - ib + link_order->offset;
1267   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1268     = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1269
1270   return TRUE;
1271 }
1272
1273 /* Make .buildid section, and set up coff_tdata->build_id. */
1274 static bfd_boolean
1275 setup_build_id (bfd *ibfd)
1276 {
1277   asection *s;
1278   flagword flags;
1279
1280   if (!validate_build_id_style (emit_build_id))
1281     {
1282       einfo (_("%P: warning: unrecognized --build-id style ignored\n"));
1283       return FALSE;
1284     }
1285
1286   flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1287            | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1288   s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1289   if (s != NULL)
1290     {
1291       struct pe_tdata *t = pe_data (link_info.output_bfd);
1292       t->build_id.after_write_object_contents = &write_build_id;
1293       t->build_id.style = emit_build_id;
1294       t->build_id.sec = s;
1295
1296       /* Section is a fixed size:
1297          One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1298          pointing at a CV_INFO_PDB70 record containing the build-id, with a
1299          null byte for PdbFileName.  */
1300       s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1301         + sizeof (CV_INFO_PDB70) + 1;
1302
1303       return TRUE;
1304     }
1305
1306   einfo (_("%P: warning: cannot create .buildid section,"
1307            " --build-id ignored\n"));
1308   return FALSE;
1309 }
1310
1311 static void
1312 gld_${EMULATION_NAME}_after_open (void)
1313 {
1314   after_open_default ();
1315
1316   is_underscoring ();
1317 #ifdef DLL_SUPPORT
1318   if (pep_dll_extra_pe_debug)
1319     {
1320       bfd *a;
1321       struct bfd_link_hash_entry *sym;
1322
1323       printf ("%s()\n", __FUNCTION__);
1324
1325       for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1326         printf ("-%s\n", sym->root.string);
1327       bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1328
1329       for (a = link_info.input_bfds; a; a = a->link.next)
1330         printf ("*%s\n",a->filename);
1331     }
1332 #endif
1333
1334   if (emit_build_id != NULL)
1335     {
1336       bfd *abfd;
1337
1338       /* Find a COFF input.  */
1339       for (abfd = link_info.input_bfds;
1340            abfd != (bfd *) NULL; abfd = abfd->link.next)
1341         if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1342           break;
1343
1344       /* If there are no COFF input files do not try to
1345          add a build-id section.  */
1346       if (abfd == NULL
1347           || !setup_build_id (abfd))
1348         {
1349           free ((char *) emit_build_id);
1350           emit_build_id = NULL;
1351         }
1352     }
1353
1354   /* Pass the wacky PE command line options into the output bfd.
1355      FIXME: This should be done via a function, rather than by
1356      including an internal BFD header.  */
1357
1358   if (bfd_get_flavour (link_info.output_bfd) != bfd_target_coff_flavour
1359       || coff_data (link_info.output_bfd) == NULL
1360       || coff_data (link_info.output_bfd)->pe == 0)
1361     einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"),
1362            link_info.output_bfd);
1363
1364   pe_data (link_info.output_bfd)->pe_opthdr = pep;
1365   pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1366   pe_data (link_info.output_bfd)->real_flags |= real_flags;
1367   pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1368
1369   /* At this point we must decide whether to use long section names
1370      in the output or not.  If the user hasn't explicitly specified
1371      on the command line, we leave it to the default for the format
1372      (object files yes, image files no), except if there is debug
1373      information present; GDB relies on the long section names to
1374      find it, so enable it in that case.  */
1375   if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1376     {
1377       if (bfd_link_relocatable (&link_info))
1378         pep_use_coff_long_section_names = 1;
1379       else
1380         {
1381           /* Iterate over all sections of all input BFDs, checking
1382              for any that begin 'debug_' and are long names.  */
1383           LANG_FOR_EACH_INPUT_STATEMENT (is)
1384           {
1385             int found_debug = 0;
1386
1387             bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1388             if (found_debug)
1389               {
1390                 pep_use_coff_long_section_names = 1;
1391                 break;
1392               }
1393           }
1394         }
1395     }
1396
1397   pep_output_file_set_long_section_names (link_info.output_bfd);
1398
1399 #ifdef DLL_SUPPORT
1400   pep_process_import_defs (link_info.output_bfd, &link_info);
1401
1402   if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
1403     pep_find_data_imports (U ("_head_"), make_import_fixup);
1404
1405   /* The implementation of the feature is rather dumb and would cause the
1406      compilation time to go through the roof if there are many undefined
1407      symbols in the link, so it needs to be run after auto-import.  */
1408   if (pep_enable_stdcall_fixup) /* -1=warn or 1=enable */
1409     pep_fixup_stdcalls ();
1410
1411 #ifndef TARGET_IS_i386pep
1412   if (bfd_link_pic (&link_info))
1413 #else
1414   if (!bfd_link_relocatable (&link_info))
1415 #endif
1416     pep_dll_build_sections (link_info.output_bfd, &link_info);
1417
1418 #ifndef TARGET_IS_i386pep
1419   else
1420     pep_exe_build_sections (link_info.output_bfd, &link_info);
1421 #endif
1422 #endif /* DLL_SUPPORT */
1423
1424   {
1425     /* This next chunk of code tries to detect the case where you have
1426        two import libraries for the same DLL (specifically,
1427        symbolically linking libm.a and libc.a in cygwin to
1428        libcygwin.a).  In those cases, it's possible for function
1429        thunks from the second implib to be used but without the
1430        head/tail objects, causing an improper import table.  We detect
1431        those cases and rename the "other" import libraries to match
1432        the one the head/tail come from, so that the linker will sort
1433        things nicely and produce a valid import table.  */
1434
1435     LANG_FOR_EACH_INPUT_STATEMENT (is)
1436       {
1437         if (is->the_bfd->my_archive)
1438           {
1439             int idata2 = 0, reloc_count=0, is_imp = 0;
1440             asection *sec;
1441
1442             /* See if this is an import library thunk.  */
1443             for (sec = is->the_bfd->sections; sec; sec = sec->next)
1444               {
1445                 if (strcmp (sec->name, ".idata\$2") == 0)
1446                   idata2 = 1;
1447                 if (CONST_STRNEQ (sec->name, ".idata\$"))
1448                   is_imp = 1;
1449                 reloc_count += sec->reloc_count;
1450               }
1451
1452             if (is_imp && !idata2 && reloc_count)
1453               {
1454                 /* It is, look for the reference to head and see if it's
1455                    from our own library.  */
1456                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1457                   {
1458                     int i;
1459                     long relsize;
1460                     asymbol **symbols;
1461                     arelent **relocs;
1462                     int nrelocs;
1463
1464                     relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1465                     if (relsize < 1)
1466                       break;
1467
1468                     if (!bfd_generic_link_read_symbols (is->the_bfd))
1469                       {
1470                         einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1471                                is->the_bfd);
1472                         return;
1473                       }
1474                     symbols = bfd_get_outsymbols (is->the_bfd);
1475
1476                     relocs = xmalloc ((size_t) relsize);
1477                     nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1478                                                       relocs, symbols);
1479                     if (nrelocs < 0)
1480                       {
1481                         free (relocs);
1482                         einfo (_("%X%P: unable to process relocs: %E\n"));
1483                         return;
1484                       }
1485
1486                     for (i = 0; i < nrelocs; i++)
1487                       {
1488                         struct bfd_symbol *s;
1489                         struct bfd_link_hash_entry * blhe;
1490                         const char *other_bfd_filename;
1491                         char *n;
1492
1493                         s = (relocs[i]->sym_ptr_ptr)[0];
1494
1495                         if (s->flags & BSF_LOCAL)
1496                           continue;
1497
1498                         /* Thunk section with reloc to another bfd.  */
1499                         blhe = bfd_link_hash_lookup (link_info.hash,
1500                                                      s->name,
1501                                                      FALSE, FALSE, TRUE);
1502
1503                         if (blhe == NULL
1504                             || blhe->type != bfd_link_hash_defined)
1505                           continue;
1506
1507                         other_bfd_filename
1508                           = blhe->u.def.section->owner->my_archive
1509                             ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1510                             : bfd_get_filename (blhe->u.def.section->owner);
1511
1512                         if (filename_cmp (bfd_get_filename
1513                                             (is->the_bfd->my_archive),
1514                                           other_bfd_filename) == 0)
1515                           continue;
1516
1517                         /* Rename this implib to match the other one.  */
1518                         n = xmalloc (strlen (other_bfd_filename) + 1);
1519                         strcpy (n, other_bfd_filename);
1520                         bfd_set_filename (is->the_bfd->my_archive, n);
1521                       }
1522
1523                     free (relocs);
1524                     /* Note - we do not free the symbols,
1525                        they are now cached in the BFD.  */
1526                   }
1527               }
1528           }
1529       }
1530   }
1531
1532   {
1533     int is_ms_arch = 0;
1534     bfd *cur_arch = 0;
1535     lang_input_statement_type *is2;
1536     lang_input_statement_type *is3;
1537
1538     /* Careful - this is a shell script.  Watch those dollar signs! */
1539     /* Microsoft import libraries have every member named the same,
1540        and not in the right order for us to link them correctly.  We
1541        must detect these and rename the members so that they'll link
1542        correctly.  There are three types of objects: the head, the
1543        thunks, and the sentinel(s).  The head is easy; it's the one
1544        with idata2.  We assume that the sentinels won't have relocs,
1545        and the thunks will.  It's easier than checking the symbol
1546        table for external references.  */
1547     LANG_FOR_EACH_INPUT_STATEMENT (is)
1548       {
1549         if (is->the_bfd->my_archive)
1550           {
1551             char *pnt;
1552             bfd *arch = is->the_bfd->my_archive;
1553
1554             if (cur_arch != arch)
1555               {
1556                 cur_arch = arch;
1557                 is_ms_arch = 1;
1558
1559                 for (is3 = is;
1560                      is3 && is3->the_bfd->my_archive == arch;
1561                      is3 = (lang_input_statement_type *) is3->next)
1562                   {
1563                     /* A MS dynamic import library can also contain static
1564                        members, so look for the first element with a .dll
1565                        extension, and use that for the remainder of the
1566                        comparisons.  */
1567                     pnt = strrchr (is3->the_bfd->filename, '.');
1568                     if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1569                       break;
1570                   }
1571
1572                 if (is3 == NULL)
1573                   is_ms_arch = 0;
1574                 else
1575                   {
1576                     /* OK, found one.  Now look to see if the remaining
1577                        (dynamic import) members use the same name.  */
1578                     for (is2 = is;
1579                          is2 && is2->the_bfd->my_archive == arch;
1580                          is2 = (lang_input_statement_type *) is2->next)
1581                       {
1582                         /* Skip static members, ie anything with a .obj
1583                            extension.  */
1584                         pnt = strrchr (is2->the_bfd->filename, '.');
1585                         if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1586                           continue;
1587
1588                         if (filename_cmp (is3->the_bfd->filename,
1589                                           is2->the_bfd->filename))
1590                           {
1591                             is_ms_arch = 0;
1592                             break;
1593                           }
1594                       }
1595                   }
1596               }
1597
1598             /* This fragment might have come from an .obj file in a Microsoft
1599                import, and not an actual import record. If this is the case,
1600                then leave the filename alone.  */
1601             pnt = strrchr (is->the_bfd->filename, '.');
1602
1603             if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1604               {
1605                 int idata2 = 0, reloc_count=0;
1606                 asection *sec;
1607                 char *new_name, seq;
1608
1609                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1610                   {
1611                     if (strcmp (sec->name, ".idata\$2") == 0)
1612                       idata2 = 1;
1613                     reloc_count += sec->reloc_count;
1614                   }
1615
1616                 if (idata2) /* .idata2 is the TOC */
1617                   seq = 'a';
1618                 else if (reloc_count > 0) /* thunks */
1619                   seq = 'b';
1620                 else /* sentinel */
1621                   seq = 'c';
1622
1623                 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1624                 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1625                 bfd_set_filename (is->the_bfd, new_name);
1626
1627                 new_name = xmalloc (strlen (is->filename) + 3);
1628                 sprintf (new_name, "%s.%c", is->filename, seq);
1629                 is->filename = new_name;
1630               }
1631           }
1632       }
1633   }
1634 }
1635 \f
1636 static void
1637 gld_${EMULATION_NAME}_before_allocation (void)
1638 {
1639   is_underscoring ();
1640   before_allocation_default ();
1641 }
1642 \f
1643 #ifdef DLL_SUPPORT
1644 /* This is called when an input file isn't recognized as a BFD.  We
1645    check here for .DEF files and pull them in automatically.  */
1646
1647 static int
1648 saw_option (char *option)
1649 {
1650   int i;
1651
1652   is_underscoring ();
1653
1654   for (i = 0; init[i].ptr; i++)
1655     if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1656       return init[i].inited;
1657   return 0;
1658 }
1659 #endif /* DLL_SUPPORT */
1660
1661 static bfd_boolean
1662 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1663 {
1664 #ifdef DLL_SUPPORT
1665   const char *ext = entry->filename + strlen (entry->filename) - 4;
1666
1667   if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1668     {
1669       pep_def_file = def_file_parse (entry->filename, pep_def_file);
1670
1671       if (pep_def_file)
1672         {
1673           int i, buflen=0, len;
1674           char *buf;
1675
1676           for (i = 0; i < pep_def_file->num_exports; i++)
1677             {
1678               len = strlen (pep_def_file->exports[i].internal_name);
1679               if (buflen < len + 2)
1680                 buflen = len + 2;
1681             }
1682
1683           buf = xmalloc (buflen);
1684
1685           for (i = 0; i < pep_def_file->num_exports; i++)
1686             {
1687               struct bfd_link_hash_entry *h;
1688
1689               sprintf (buf, "%s%s", U (""),
1690                        pep_def_file->exports[i].internal_name);
1691
1692               h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1693               if (h == (struct bfd_link_hash_entry *) NULL)
1694                 einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n"));
1695               if (h->type == bfd_link_hash_new)
1696                 {
1697                   h->type = bfd_link_hash_undefined;
1698                   h->u.undef.abfd = NULL;
1699                   bfd_link_add_undef (link_info.hash, h);
1700                 }
1701             }
1702           free (buf);
1703
1704           /* def_file_print (stdout, pep_def_file); */
1705           if (pep_def_file->is_dll == 1)
1706             link_info.type = type_dll;
1707
1708           if (pep_def_file->base_address != (bfd_vma)(-1))
1709             {
1710               pep.ImageBase
1711                 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1712                 = init[IMAGEBASEOFF].value
1713                 = pep_def_file->base_address;
1714               init[IMAGEBASEOFF].inited = 1;
1715               if (image_base_statement)
1716                 image_base_statement->exp
1717                   = exp_assign ("__image_base__", exp_intop (pep.ImageBase),
1718                                 FALSE);
1719             }
1720
1721           if (pep_def_file->stack_reserve != -1
1722               && ! saw_option ("__size_of_stack_reserve__"))
1723             {
1724               pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1725               if (pep_def_file->stack_commit != -1)
1726                 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1727             }
1728           if (pep_def_file->heap_reserve != -1
1729               && ! saw_option ("__size_of_heap_reserve__"))
1730             {
1731               pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1732               if (pep_def_file->heap_commit != -1)
1733                 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1734             }
1735           return TRUE;
1736         }
1737     }
1738 #endif
1739   return FALSE;
1740 }
1741
1742 static bfd_boolean
1743 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1744 {
1745   is_underscoring ();
1746 #ifdef DLL_SUPPORT
1747 #ifdef TARGET_IS_i386pep
1748   pep_dll_id_target ("pei-x86-64");
1749 #endif
1750   if (pep_bfd_is_dll (entry->the_bfd))
1751     return pep_implied_import_dll (entry->filename);
1752 #endif
1753   return FALSE;
1754 }
1755
1756 static void
1757 gld_${EMULATION_NAME}_finish (void)
1758 {
1759   is_underscoring ();
1760   finish_default ();
1761
1762 #ifdef DLL_SUPPORT
1763   if (bfd_link_pic (&link_info)
1764       || pep_dll_enable_reloc_section
1765       || (!bfd_link_relocatable (&link_info)
1766           && pep_def_file->num_exports != 0))
1767     {
1768       pep_dll_fill_sections (link_info.output_bfd, &link_info);
1769       if (command_line.out_implib_filename)
1770         pep_dll_generate_implib (pep_def_file,
1771                                  command_line.out_implib_filename, &link_info);
1772     }
1773
1774   if (pep_out_def_filename)
1775     pep_dll_generate_def_file (pep_out_def_filename);
1776 #endif /* DLL_SUPPORT */
1777
1778   /* I don't know where .idata gets set as code, but it shouldn't be.  */
1779   {
1780     asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1781
1782     if (asec)
1783       {
1784         asec->flags &= ~SEC_CODE;
1785         asec->flags |= SEC_DATA;
1786       }
1787   }
1788 }
1789
1790 \f
1791 /* Place an orphan section.
1792
1793    We use this to put sections in a reasonable place in the file, and
1794    to ensure that they are aligned as required.
1795
1796    We handle grouped sections here as well.  A section named .foo\$nn
1797    goes into the output section .foo.  All grouped sections are sorted
1798    by name.
1799
1800    Grouped sections for the default sections are handled by the
1801    default linker script using wildcards, and are sorted by
1802    sort_sections.  */
1803
1804 static lang_output_section_statement_type *
1805 gld_${EMULATION_NAME}_place_orphan (asection *s,
1806                                     const char *secname,
1807                                     int constraint)
1808 {
1809   const char *orig_secname = secname;
1810   char *dollar = NULL;
1811   lang_output_section_statement_type *os;
1812   lang_statement_list_type add_child;
1813   lang_output_section_statement_type *match_by_name = NULL;
1814   lang_statement_union_type **pl;
1815
1816   /* Look through the script to see where to place this section.  */
1817   if (!bfd_link_relocatable (&link_info)
1818       && (dollar = strchr (secname, '\$')) != NULL)
1819     {
1820       size_t len = dollar - secname;
1821       char *newname = xmalloc (len + 1);
1822       memcpy (newname, secname, len);
1823       newname[len] = '\0';
1824       secname = newname;
1825     }
1826
1827   lang_list_init (&add_child);
1828
1829   os = NULL;
1830   if (constraint == 0)
1831     for (os = lang_output_section_find (secname);
1832          os != NULL;
1833          os = next_matching_output_section_statement (os, 0))
1834       {
1835         /* If we don't match an existing output section, tell
1836            lang_insert_orphan to create a new output section.  */
1837         constraint = SPECIAL;
1838
1839         if (os->bfd_section != NULL
1840             && (os->bfd_section->flags == 0
1841                 || ((s->flags ^ os->bfd_section->flags)
1842                     & (SEC_LOAD | SEC_ALLOC)) == 0))
1843           {
1844             /* We already have an output section statement with this
1845                name, and its bfd section has compatible flags.
1846                If the section already exists but does not have any flags set,
1847                then it has been created by the linker, probably as a result of
1848                a --section-start command line switch.  */
1849             lang_add_section (&add_child, s, NULL, os);
1850             break;
1851           }
1852
1853         /* Save unused output sections in case we can match them
1854            against orphans later.  */
1855         if (os->bfd_section == NULL)
1856           match_by_name = os;
1857       }
1858
1859   /* If we didn't match an active output section, see if we matched an
1860      unused one and use that.  */
1861   if (os == NULL && match_by_name)
1862     {
1863       lang_add_section (&match_by_name->children, s, NULL, match_by_name);
1864       return match_by_name;
1865     }
1866
1867   if (os == NULL)
1868     {
1869       static struct orphan_save hold[] =
1870         {
1871           { ".text",
1872             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1873             0, 0, 0, 0 },
1874           { ".idata",
1875             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1876             0, 0, 0, 0 },
1877           { ".rdata",
1878             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1879             0, 0, 0, 0 },
1880           { ".data",
1881             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1882             0, 0, 0, 0 },
1883           { ".bss",
1884             SEC_ALLOC,
1885             0, 0, 0, 0 }
1886         };
1887       enum orphan_save_index
1888         {
1889           orphan_text = 0,
1890           orphan_idata,
1891           orphan_rodata,
1892           orphan_data,
1893           orphan_bss
1894         };
1895       static int orphan_init_done = 0;
1896       struct orphan_save *place;
1897       lang_output_section_statement_type *after;
1898       etree_type *address;
1899       flagword flags;
1900       asection *nexts;
1901
1902       if (!orphan_init_done)
1903         {
1904           struct orphan_save *ho;
1905           for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1906             if (ho->name != NULL)
1907               {
1908                 ho->os = lang_output_section_find (ho->name);
1909                 if (ho->os != NULL && ho->os->flags == 0)
1910                   ho->os->flags = ho->flags;
1911               }
1912           orphan_init_done = 1;
1913         }
1914
1915       flags = s->flags;
1916       if (!bfd_link_relocatable (&link_info))
1917         {
1918           nexts = s;
1919           while ((nexts = bfd_get_next_section_by_name (nexts->owner,
1920                                                         nexts)))
1921             if (nexts->output_section == NULL
1922                 && (nexts->flags & SEC_EXCLUDE) == 0
1923                 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
1924                 && (nexts->owner->flags & DYNAMIC) == 0
1925                 && !bfd_input_just_syms (nexts->owner))
1926               flags = (((flags ^ SEC_READONLY)
1927                         | (nexts->flags ^ SEC_READONLY))
1928                        ^ SEC_READONLY);
1929         }
1930
1931       /* Try to put the new output section in a reasonable place based
1932          on the section name and section flags.  */
1933
1934       place = NULL;
1935       if ((flags & SEC_ALLOC) == 0)
1936         ;
1937       else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1938         place = &hold[orphan_bss];
1939       else if ((flags & SEC_READONLY) == 0)
1940         place = &hold[orphan_data];
1941       else if ((flags & SEC_CODE) == 0)
1942         {
1943           place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
1944                                                      : &hold[orphan_rodata]);
1945         }
1946       else
1947         place = &hold[orphan_text];
1948
1949       after = NULL;
1950       if (place != NULL)
1951         {
1952           if (place->os == NULL)
1953             place->os = lang_output_section_find (place->name);
1954           after = place->os;
1955           if (after == NULL)
1956             after = lang_output_section_find_by_flags (s, flags, &place->os,
1957                                                        NULL);
1958           if (after == NULL)
1959             /* *ABS* is always the first output section statement.  */
1960             after = (void *) lang_os_list.head;
1961         }
1962
1963       /* All sections in an executable must be aligned to a page boundary.
1964          In a relocatable link, just preserve the incoming alignment; the
1965          address is discarded by lang_insert_orphan in that case, anyway.  */
1966       address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1967       os = lang_insert_orphan (s, secname, constraint, after, place, address,
1968                                &add_child);
1969       if (bfd_link_relocatable (&link_info))
1970         {
1971           os->section_alignment = exp_intop (1U << s->alignment_power);
1972           os->bfd_section->alignment_power = s->alignment_power;
1973         }
1974     }
1975
1976   /* If the section name has a '\$', sort it with the other '\$'
1977      sections.  */
1978   for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
1979     {
1980       lang_input_section_type *ls;
1981       const char *lname;
1982
1983       if ((*pl)->header.type != lang_input_section_enum)
1984         continue;
1985
1986       ls = &(*pl)->input_section;
1987
1988       lname = bfd_section_name (ls->section);
1989       if (strchr (lname, '\$') != NULL
1990           && (dollar == NULL || strcmp (orig_secname, lname) < 0))
1991         break;
1992     }
1993
1994   if (add_child.head != NULL)
1995     {
1996       *add_child.tail = *pl;
1997       *pl = add_child.head;
1998     }
1999
2000   return os;
2001 }
2002
2003 static bfd_boolean
2004 gld_${EMULATION_NAME}_open_dynamic_archive
2005   (const char *arch ATTRIBUTE_UNUSED,
2006    search_dirs_type *search,
2007    lang_input_statement_type *entry)
2008 {
2009   static const struct
2010     {
2011       const char * format;
2012       bfd_boolean use_prefix;
2013     }
2014   libname_fmt [] =
2015     {
2016       /* Preferred explicit import library for dll's.  */
2017       { "lib%s.dll.a", FALSE },
2018       /* Alternate explicit import library for dll's.  */
2019       { "%s.dll.a", FALSE },
2020       /* "libfoo.a" could be either an import lib or a static lib.
2021          For backwards compatibility, libfoo.a needs to precede
2022          libfoo.dll and foo.dll in the search.  */
2023       { "lib%s.a", FALSE },
2024       /* The 'native' spelling of an import lib name is "foo.lib".  */
2025       { "%s.lib", FALSE },
2026       /* PR 22948 - Check for an import library.  */
2027       { "lib%s.lib", FALSE },
2028 #ifdef DLL_SUPPORT
2029       /* Try "<prefix>foo.dll" (preferred dll name, if specified).  */
2030       { "%s%s.dll", TRUE },
2031 #endif
2032       /* Try "libfoo.dll" (default preferred dll name).  */
2033       { "lib%s.dll", FALSE },
2034       /* Finally try 'native' dll name "foo.dll".  */
2035       {  "%s.dll", FALSE },
2036       /* Note: If adding more formats to this table, make sure to check to
2037          see if their length is longer than libname_fmt[0].format, and if
2038          so, update the call to xmalloc() below.  */
2039       { NULL, FALSE }
2040     };
2041   static unsigned int format_max_len = 0;
2042   const char * filename;
2043   char * full_string;
2044   char * base_string;
2045   unsigned int i;
2046
2047
2048   if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2049     return FALSE;
2050
2051   filename = entry->filename;
2052
2053   if (format_max_len == 0)
2054     /* We need to allow space in the memory that we are going to allocate
2055        for the characters in the format string.  Since the format array is
2056        static we only need to calculate this information once.  In theory
2057        this value could also be computed statically, but this introduces
2058        the possibility for a discrepancy and hence a possible memory
2059        corruption.  The lengths we compute here will be too long because
2060        they will include any formating characters (%s) in the strings, but
2061        this will not matter.  */
2062     for (i = 0; libname_fmt[i].format; i++)
2063       if (format_max_len < strlen (libname_fmt[i].format))
2064         format_max_len = strlen (libname_fmt[i].format);
2065
2066   full_string = xmalloc (strlen (search->name)
2067                          + strlen (filename)
2068                          + format_max_len
2069 #ifdef DLL_SUPPORT
2070                          + (pep_dll_search_prefix
2071                             ? strlen (pep_dll_search_prefix) : 0)
2072 #endif
2073                          /* Allow for the terminating NUL and for the path
2074                             separator character that is inserted between
2075                             search->name and the start of the format string.  */
2076                          + 2);
2077
2078   sprintf (full_string, "%s/", search->name);
2079   base_string = full_string + strlen (full_string);
2080
2081   for (i = 0; libname_fmt[i].format; i++)
2082     {
2083 #ifdef DLL_SUPPORT
2084       if (libname_fmt[i].use_prefix)
2085         {
2086           if (!pep_dll_search_prefix)
2087             continue;
2088           sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
2089         }
2090       else
2091 #endif
2092         sprintf (base_string, libname_fmt[i].format, filename);
2093
2094       if (ldfile_try_open_bfd (full_string, entry))
2095         break;
2096     }
2097
2098   if (!libname_fmt[i].format)
2099     {
2100       free (full_string);
2101       return FALSE;
2102     }
2103
2104   entry->filename = full_string;
2105
2106   return TRUE;
2107 }
2108
2109 static int
2110 gld_${EMULATION_NAME}_find_potential_libraries
2111   (char *name, lang_input_statement_type *entry)
2112 {
2113   return ldfile_open_file_search (name, entry, "", ".lib");
2114 }
2115 \f
2116 static char *
2117 gld_${EMULATION_NAME}_get_script (int *isfile)
2118 EOF
2119 # Scripts compiled in.
2120 # sed commands to quote an ld script as a C string.
2121 sc="-f stringify.sed"
2122
2123 fragment <<EOF
2124 {
2125   *isfile = 0;
2126
2127   if (bfd_link_relocatable (&link_info) && config.build_constructors)
2128     return
2129 EOF
2130 sed $sc ldscripts/${EMULATION_NAME}.xu                  >> e${EMULATION_NAME}.c
2131 echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2132 sed $sc ldscripts/${EMULATION_NAME}.xr                  >> e${EMULATION_NAME}.c
2133 echo '  ; else if (!config.text_read_only) return'      >> e${EMULATION_NAME}.c
2134 sed $sc ldscripts/${EMULATION_NAME}.xbn                 >> e${EMULATION_NAME}.c
2135 echo '  ; else if (!config.magic_demand_paged) return'  >> e${EMULATION_NAME}.c
2136 sed $sc ldscripts/${EMULATION_NAME}.xn                  >> e${EMULATION_NAME}.c
2137 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2138 echo '  ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return'     >> e${EMULATION_NAME}.c
2139 sed $sc ldscripts/${EMULATION_NAME}.xa                  >> e${EMULATION_NAME}.c
2140 fi
2141 echo '  ; else return'                                  >> e${EMULATION_NAME}.c
2142 sed $sc ldscripts/${EMULATION_NAME}.x                   >> e${EMULATION_NAME}.c
2143 echo '; }'                                              >> e${EMULATION_NAME}.c
2144
2145 fragment <<EOF
2146
2147
2148 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2149 {
2150   gld_${EMULATION_NAME}_before_parse,
2151   syslib_default,
2152   hll_default,
2153   gld_${EMULATION_NAME}_after_parse,
2154   gld_${EMULATION_NAME}_after_open,
2155   after_check_relocs_default,
2156   after_allocation_default,
2157   set_output_arch_default,
2158   ldemul_default_target,
2159   gld_${EMULATION_NAME}_before_allocation,
2160   gld_${EMULATION_NAME}_get_script,
2161   "${EMULATION_NAME}",
2162   "${OUTPUT_FORMAT}",
2163   gld_${EMULATION_NAME}_finish,
2164   NULL, /* Create output section statements.  */
2165   gld_${EMULATION_NAME}_open_dynamic_archive,
2166   gld_${EMULATION_NAME}_place_orphan,
2167   gld_${EMULATION_NAME}_set_symbols,
2168   NULL, /* parse_args */
2169   gld${EMULATION_NAME}_add_options,
2170   gld${EMULATION_NAME}_handle_option,
2171   gld_${EMULATION_NAME}_unrecognized_file,
2172   gld_${EMULATION_NAME}_list_options,
2173   gld_${EMULATION_NAME}_recognized_file,
2174   gld_${EMULATION_NAME}_find_potential_libraries,
2175   NULL, /* new_vers_pattern.  */
2176   NULL, /* extra_map_file_text */
2177   ${LDEMUL_EMIT_CTF_EARLY-NULL},
2178   ${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}
2179 };
2180 EOF