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${EMULATION_NAME}.c # there, now line numbers match ;-)
  20 fragment <<EOF
  21 /* Copyright (C) 2006-2017 Free Software Foundation, Inc.
  22    Written by Kai Tietz, OneVision Software GmbH&CoKg.
  23
  24    This file is part of the GNU Binutils.
  25
  26    This program is free software; you can redistribute it and/or modify
  27    it under the terms of the GNU General Public License as published by
  28    the Free Software Foundation; either version 3 of the License, or
  29    (at your option) any later version.
  30
  31    This program is distributed in the hope that it will be useful,
  32    but WITHOUT ANY WARRANTY; without even the implied warranty of
  33    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34    GNU General Public License for more details.
  35
  36    You should have received a copy of the GNU General Public License
  37    along with this program; if not, write to the Free Software
  38    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  39    MA 02110-1301, USA.  */
  40
  41
  42 /* For WINDOWS_XP64 and higher */
  43 /* Based on pe.em, but modified for 64 bit support.  */
  44
  45 #define TARGET_IS_${EMULATION_NAME}
  46
  47 #define COFF_IMAGE_WITH_PE
  48 #define COFF_WITH_PE
  49 #define COFF_WITH_pex64
  50
  51 #include "sysdep.h"
  52 #include "bfd.h"
  53 #include "bfdlink.h"
  54 #include "getopt.h"
  55 #include "libiberty.h"
  56 #include "filenames.h"
  57 #include "ld.h"
  58 #include "ldmain.h"
  59 #include "ldexp.h"
  60 #include "ldlang.h"
  61 #include "ldfile.h"
  62 #include "ldemul.h"
  63 #include <ldgram.h>
  64 #include "ldlex.h"
  65 #include "ldmisc.h"
  66 #include "ldctor.h"
  67 #include "ldbuildid.h"
  68 #include "coff/internal.h"
  69
  70 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
  71    header in generic PE code.  */
  72 #include "coff/x86_64.h"
  73 #include "coff/pe.h"
  74
  75 /* FIXME: These are BFD internal header files, and we should not be
  76    using it here.  */
  77 #include "../bfd/libcoff.h"
  78 #include "../bfd/libpei.h"
  79
  80 #undef  AOUTSZ
  81 #define AOUTSZ          PEPAOUTSZ
  82 #define PEAOUTHDR       PEPAOUTHDR
  83
  84 #include "deffile.h"
  85 #include "pep-dll.h"
  86 #include "safe-ctype.h"
  87
  88 /* Permit the emulation parameters to override the default section
  89    alignment by setting OVERRIDE_SECTION_ALIGNMENT.  FIXME: This makes
  90    it seem that include/coff/internal.h should not define
  91    PE_DEF_SECTION_ALIGNMENT.  */
  92 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
  93 #undef  PE_DEF_SECTION_ALIGNMENT
  94 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
  95 #endif
  96
  97 #ifdef TARGET_IS_i386pep
  98 #define DLL_SUPPORT
  99 #endif
 100
 101 #if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
 102 #define PE_DEF_SUBSYSTEM                3
 103 #undef NT_EXE_IMAGE_BASE
 104 #define NT_EXE_IMAGE_BASE \
 105   ((bfd_vma) (${move_default_addr_high} ? 0x100400000LL \
 106                                         : 0x400000LL))
 107 #undef NT_DLL_IMAGE_BASE
 108 #define NT_DLL_IMAGE_BASE \
 109   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 110                                         : 0x10000000LL))
 111 #undef NT_DLL_AUTO_IMAGE_BASE
 112 #define NT_DLL_AUTO_IMAGE_BASE \
 113   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 114                                         : 0x61300000LL))
 115 #undef NT_DLL_AUTO_IMAGE_MASK
 116 #define NT_DLL_AUTO_IMAGE_MASK \
 117   ((bfd_vma) (${move_default_addr_high} ? 0x1ffff0000LL \
 118                                         : 0x0ffc0000LL))
 119 #else
 120 #undef  NT_EXE_IMAGE_BASE
 121 #define NT_EXE_IMAGE_BASE \
 122   ((bfd_vma) (${move_default_addr_high} ? 0x100010000LL \
 123                                         : 0x10000LL))
 124 #undef NT_DLL_IMAGE_BASE
 125 #define NT_DLL_IMAGE_BASE \
 126   ((bfd_vma) (${move_default_addr_high} ? 0x110000000LL \
 127                                         : 0x10000000LL))
 128 #undef NT_DLL_AUTO_IMAGE_BASE
 129 #define NT_DLL_AUTO_IMAGE_BASE \
 130   ((bfd_vma) (${move_default_addr_high} ? 0x120000000LL \
 131                                         : 0x61300000LL))
 132 #undef NT_DLL_AUTO_IMAGE_MASK
 133 #define NT_DLL_AUTO_IMAGE_MASK \
 134   ((bfd_vma) (${move_default_addr_high} ? 0x0ffff0000LL \
 135                                         : 0x0ffc0000LL))
 136 #undef  PE_DEF_SECTION_ALIGNMENT
 137 #define PE_DEF_SUBSYSTEM                2
 138 #undef  PE_DEF_FILE_ALIGNMENT
 139 #define PE_DEF_FILE_ALIGNMENT           0x00000200
 140 #define PE_DEF_SECTION_ALIGNMENT        0x00000400
 141 #endif
 142
 143 static struct internal_extra_pe_aouthdr pep;
 144 static int dll;
 145 static int pep_subsystem = ${SUBSYSTEM};
 146 static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
 147 static int support_old_code = 0;
 148 static lang_assignment_statement_type *image_base_statement = 0;
 149 static unsigned short pe_dll_characteristics = 0;
 150 static bfd_boolean insert_timestamp = TRUE;
 151 static const char *emit_build_id;
 152
 153 #ifdef DLL_SUPPORT
 154 static int    pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default).  */
 155 static char * pep_out_def_filename = NULL;
 156 static int    pep_enable_auto_image_base = 0;
 157 static char * pep_dll_search_prefix = NULL;
 158 #endif
 159
 160 extern const char *output_filename;
 161
 162 static int is_underscoring (void)
 163 {
 164   int u = 0;
 165   if (pep_leading_underscore != -1)
 166     return pep_leading_underscore;
 167   if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
 168     bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
 169
 170   if (u == -1)
 171     abort ();
 172   pep_leading_underscore = (u != 0 ? 1 : 0);
 173   return pep_leading_underscore;
 174 }
 175
 176
 177 static void
 178 gld_${EMULATION_NAME}_before_parse (void)
 179 {
 180   is_underscoring ();
 181   ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
 182   output_filename = "${EXECUTABLE_NAME:-a.exe}";
 183 #ifdef DLL_SUPPORT
 184   input_flags.dynamic = TRUE;
 185   config.has_shared = 1;
 186   link_info.pei386_auto_import = 1;
 187   link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2.  */
 188 #endif
 189 }
 190 \f
 191 /* PE format extra command line options.  */
 192
 193 /* Used for setting flags in the PE header.  */
 194 enum options
 195 {
 196   OPTION_BASE_FILE = 300 + 1,
 197   OPTION_DLL,
 198   OPTION_FILE_ALIGNMENT,
 199   OPTION_IMAGE_BASE,
 200   OPTION_MAJOR_IMAGE_VERSION,
 201   OPTION_MAJOR_OS_VERSION,
 202   OPTION_MAJOR_SUBSYSTEM_VERSION,
 203   OPTION_MINOR_IMAGE_VERSION,
 204   OPTION_MINOR_OS_VERSION,
 205   OPTION_MINOR_SUBSYSTEM_VERSION,
 206   OPTION_SECTION_ALIGNMENT,
 207   OPTION_STACK,
 208   OPTION_SUBSYSTEM,
 209   OPTION_HEAP,
 210   OPTION_SUPPORT_OLD_CODE,
 211   OPTION_OUT_DEF,
 212   OPTION_EXPORT_ALL,
 213   OPTION_EXCLUDE_SYMBOLS,
 214   OPTION_EXCLUDE_ALL_SYMBOLS,
 215   OPTION_KILL_ATS,
 216   OPTION_STDCALL_ALIASES,
 217   OPTION_ENABLE_STDCALL_FIXUP,
 218   OPTION_DISABLE_STDCALL_FIXUP,
 219   OPTION_WARN_DUPLICATE_EXPORTS,
 220   OPTION_IMP_COMPAT,
 221   OPTION_ENABLE_AUTO_IMAGE_BASE,
 222   OPTION_DISABLE_AUTO_IMAGE_BASE,
 223   OPTION_DLL_SEARCH_PREFIX,
 224   OPTION_NO_DEFAULT_EXCLUDES,
 225   OPTION_DLL_ENABLE_AUTO_IMPORT,
 226   OPTION_DLL_DISABLE_AUTO_IMPORT,
 227   OPTION_ENABLE_EXTRA_PE_DEBUG,
 228   OPTION_EXCLUDE_LIBS,
 229   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
 230   OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
 231   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
 232   OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
 233   OPTION_USE_NUL_PREFIXED_IMPORT_TABLES,
 234   OPTION_NO_LEADING_UNDERSCORE,
 235   OPTION_LEADING_UNDERSCORE,
 236   OPTION_ENABLE_LONG_SECTION_NAMES,
 237   OPTION_DISABLE_LONG_SECTION_NAMES,
 238   OPTION_HIGH_ENTROPY_VA,
 239   OPTION_DYNAMIC_BASE,
 240   OPTION_FORCE_INTEGRITY,
 241   OPTION_NX_COMPAT,
 242   OPTION_NO_ISOLATION,
 243   OPTION_NO_SEH,
 244   OPTION_NO_BIND,
 245   OPTION_WDM_DRIVER,
 246   OPTION_INSERT_TIMESTAMP,
 247   OPTION_NO_INSERT_TIMESTAMP,
 248   OPTION_TERMINAL_SERVER_AWARE,
 249   OPTION_BUILD_ID
 250 };
 251
 252 static void
 253 gld${EMULATION_NAME}_add_options
 254   (int ns ATTRIBUTE_UNUSED,
 255    char **shortopts ATTRIBUTE_UNUSED,
 256    int nl,
 257    struct option **longopts,
 258    int nrl ATTRIBUTE_UNUSED,
 259    struct option **really_longopts ATTRIBUTE_UNUSED)
 260 {
 261   static const struct option xtra_long[] =
 262   {
 263     /* PE options */
 264     {"base-file", required_argument, NULL, OPTION_BASE_FILE},
 265     {"dll", no_argument, NULL, OPTION_DLL},
 266     {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
 267     {"heap", required_argument, NULL, OPTION_HEAP},
 268     {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
 269     {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
 270     {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
 271     {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
 272     {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
 273     {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
 274     {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
 275     {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
 276     {"stack", required_argument, NULL, OPTION_STACK},
 277     {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
 278     {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
 279     {"use-nul-prefixed-import-tables", no_argument, NULL,
 280      OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
 281     {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
 282     {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
 283 #ifdef DLL_SUPPORT
 284     /* getopt allows abbreviations, so we do this to stop it
 285        from treating -o as an abbreviation for this option.  */
 286     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 287     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 288     {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
 289     {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
 290     {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
 291     {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
 292     {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
 293     {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
 294     {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
 295     {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
 296     {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
 297     {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
 298     /* getopt() allows abbreviations, so we do this to stop it from
 299        treating -c as an abbreviation for these --compat-implib.  */
 300     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 301     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 302     {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
 303     {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
 304     {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
 305     {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
 306     {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
 307     {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
 308     {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
 309     {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
 310     {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
 311     {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
 312 #endif
 313     {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
 314     {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
 315     {"high-entropy-va", no_argument, NULL, OPTION_HIGH_ENTROPY_VA},
 316     {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
 317     {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
 318     {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
 319     {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
 320     {"no-seh", no_argument, NULL, OPTION_NO_SEH},
 321     {"no-bind", no_argument, NULL, OPTION_NO_BIND},
 322     {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
 323     {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
 324     {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
 325     {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
 326     {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
 327     {NULL, no_argument, NULL, 0}
 328   };
 329
 330   *longopts
 331     = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
 332   memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
 333 }
 334
 335 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
 336    parameters which may be input from the command line.  */
 337
 338 typedef struct
 339 {
 340   void *ptr;
 341   int size;
 342   bfd_vma value;
 343   char *symbol;
 344   int inited;
 345   /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
 346      C visible symbols can be prefixed by underscore dependent on target's
 347      settings.  */
 348   bfd_boolean is_c_symbol;
 349 } definfo;
 350
 351 #define GET_INIT_SYMBOL_NAME(IDX) \
 352   (init[(IDX)].symbol \
 353    + ((!init[(IDX)].is_c_symbol || is_underscoring () == 1) ? 0 : 1))
 354
 355 /* Decorates the C visible symbol by underscore, if target requires.  */
 356 #define U(CSTR) \
 357   ((is_underscoring () == 0) ? CSTR : "_" CSTR)
 358
 359 /* Get size of constant string for a possible underscore prefixed
 360    C visible symbol.  */
 361 #define U_SIZE(CSTR) \
 362   (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
 363
 364 #define D(field,symbol,def,usc)  {&pep.field, sizeof (pep.field), def, symbol, 0, usc}
 365
 366 static definfo init[] =
 367 {
 368   /* imagebase must be first */
 369 #define IMAGEBASEOFF 0
 370   D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
 371 #define DLLOFF 1
 372   {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
 373 #define MSIMAGEBASEOFF  2
 374   D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
 375   D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
 376   D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
 377   D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
 378   D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
 379   D(MajorImageVersion,"__major_image_version__", 0, FALSE),
 380   D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
 381   D(MajorSubsystemVersion,"__major_subsystem_version__", 5, FALSE),
 382   D(MinorSubsystemVersion,"__minor_subsystem_version__", 2, FALSE),
 383   D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
 384   D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
 385   D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
 386   D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
 387   D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
 388   D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
 389   D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
 390   { NULL, 0, 0, NULL, 0, FALSE}
 391 };
 392
 393
 394 static void
 395 gld_${EMULATION_NAME}_list_options (FILE *file)
 396 {
 397   fprintf (file, _("  --base_file <basefile>             Generate a base file for relocatable DLLs\n"));
 398   fprintf (file, _("  --dll                              Set image base to the default for DLLs\n"));
 399   fprintf (file, _("  --file-alignment <size>            Set file alignment\n"));
 400   fprintf (file, _("  --heap <size>                      Set initial size of the heap\n"));
 401   fprintf (file, _("  --image-base <address>             Set start address of the executable\n"));
 402   fprintf (file, _("  --major-image-version <number>     Set version number of the executable\n"));
 403   fprintf (file, _("  --major-os-version <number>        Set minimum required OS version\n"));
 404   fprintf (file, _("  --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
 405   fprintf (file, _("  --minor-image-version <number>     Set revision number of the executable\n"));
 406   fprintf (file, _("  --minor-os-version <number>        Set minimum required OS revision\n"));
 407   fprintf (file, _("  --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
 408   fprintf (file, _("  --section-alignment <size>         Set section alignment\n"));
 409   fprintf (file, _("  --stack <size>                     Set size of the initial stack\n"));
 410   fprintf (file, _("  --subsystem <name>[:<version>]     Set required OS subsystem [& version]\n"));
 411   fprintf (file, _("  --support-old-code                 Support interworking with old code\n"));
 412   fprintf (file, _("  --[no-]leading-underscore          Set explicit symbol underscore prefix mode\n"));
 413   fprintf (file, _("  --[no-]insert-timestamp            Use a real timestamp rather than zero. (default)\n"));
 414   fprintf (file, _("                                     This makes binaries non-deterministic\n"));
 415 #ifdef DLL_SUPPORT
 416   fprintf (file, _("  --add-stdcall-alias                Export symbols with and without @nn\n"));
 417   fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
 418   fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
 419   fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
 420   fprintf (file, _("  --exclude-all-symbols              Exclude all symbols from automatic export\n"));
 421   fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
 422   fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
 423   fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
 424   fprintf (file, _("                                     export, place into import library instead.\n"));
 425   fprintf (file, _("  --export-all-symbols               Automatically export all globals to DLL\n"));
 426   fprintf (file, _("  --kill-at                          Remove @nn from exported symbols\n"));
 427   fprintf (file, _("  --output-def <file>                Generate a .DEF file for the built DLL\n"));
 428   fprintf (file, _("  --warn-duplicate-exports           Warn about duplicate exports.\n"));
 429   fprintf (file, _("  --compat-implib                    Create backward compatible import libs;\n\
 430                                        create __imp_<SYMBOL> as well.\n"));
 431   fprintf (file, _("  --enable-auto-image-base           Automatically choose image base for DLLs\n\
 432                                        unless user specifies one\n"));
 433   fprintf (file, _("  --disable-auto-image-base          Do not auto-choose image base. (default)\n"));
 434   fprintf (file, _("  --dll-search-prefix=<string>       When linking dynamically to a dll without\n\
 435                                        an importlib, use <string><basename>.dll\n\
 436                                        in preference to lib<basename>.dll \n"));
 437   fprintf (file, _("  --enable-auto-import               Do sophisticated linking of _sym to\n\
 438                                        __imp_sym for DATA references\n"));
 439   fprintf (file, _("  --disable-auto-import              Do not auto-import DATA items from DLLs\n"));
 440   fprintf (file, _("  --enable-runtime-pseudo-reloc      Work around auto-import limitations by\n\
 441                                        adding pseudo-relocations resolved at\n\
 442                                        runtime.\n"));
 443   fprintf (file, _("  --disable-runtime-pseudo-reloc     Do not add runtime pseudo-relocations for\n\
 444                                        auto-imported DATA.\n"));
 445   fprintf (file, _("  --enable-extra-pep-debug            Enable verbose debug output when building\n\
 446                                        or linking to DLLs (esp. auto-import)\n"));
 447   fprintf (file, _("  --enable-long-section-names        Use long COFF section names even in\n\
 448                                        executable image files\n"));
 449   fprintf (file, _("  --disable-long-section-names       Never use long COFF section names, even\n\
 450                                        in object files\n"));
 451   fprintf (file, _("  --high-entropy-va                  Image is compatible with 64-bit address space\n\
 452                                        layout randomization (ASLR)\n"));
 453   fprintf (file, _("  --dynamicbase                      Image base address may be relocated using\n\
 454                                        address space layout randomization (ASLR)\n"));
 455   fprintf (file, _("  --forceinteg               Code integrity checks are enforced\n"));
 456   fprintf (file, _("  --nxcompat                 Image is compatible with data execution prevention\n"));
 457   fprintf (file, _("  --no-isolation             Image understands isolation but do not isolate the image\n"));
 458   fprintf (file, _("  --no-seh                   Image does not use SEH. No SE handler may\n\
 459                                        be called in this image\n"));
 460   fprintf (file, _("  --no-bind                  Do not bind this image\n"));
 461   fprintf (file, _("  --wdmdriver                Driver uses the WDM model\n"));
 462   fprintf (file, _("  --tsaware                  Image is Terminal Server aware\n"));
 463   fprintf (file, _("  --build-id[=STYLE]         Generate build ID\n"));
 464 #endif
 465 }
 466
 467
 468 static void
 469 set_pep_name (char *name, bfd_vma val)
 470 {
 471   int i;
 472   is_underscoring ();
 473   /* Find the name and set it.  */
 474   for (i = 0; init[i].ptr; i++)
 475     {
 476       if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
 477         {
 478           init[i].value = val;
 479           init[i].inited = 1;
 480           if (strcmp (name,"__image_base__") == 0)
 481             set_pep_name (U ("__ImageBase"), val);
 482           return;
 483         }
 484     }
 485   abort ();
 486 }
 487
 488 static void
 489 set_entry_point (void)
 490 {
 491   const char *entry;
 492   const char *initial_symbol_char;
 493   int i;
 494
 495   static const struct
 496     {
 497       const int value;
 498       const char *entry;
 499     }
 500   v[] =
 501     {
 502       { 1, "NtProcessStartup"  },
 503       { 2, "WinMainCRTStartup" },
 504       { 3, "mainCRTStartup"    },
 505       { 7, "__PosixProcessStartup" },
 506       { 9, "WinMainCRTStartup" },
 507       {14, "mainCRTStartup"    },
 508       { 0, NULL          }
 509     };
 510
 511   /* Entry point name for arbitrary subsystem numbers.  */
 512   static const char default_entry[] = "mainCRTStartup";
 513
 514   if (bfd_link_pic (&link_info) || dll)
 515     {
 516       entry = "DllMainCRTStartup";
 517     }
 518   else
 519     {
 520       for (i = 0; v[i].entry; i++)
 521         if (v[i].value == pep_subsystem)
 522           break;
 523
 524       /* If no match, use the default.  */
 525       if (v[i].entry != NULL)
 526         entry = v[i].entry;
 527       else
 528         entry = default_entry;
 529     }
 530
 531   /* Now we check target's default for getting proper symbol_char.  */
 532   initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
 533
 534   if (*initial_symbol_char != '\0')
 535     {
 536       char *alc_entry;
 537
 538       /* lang_default_entry expects its argument to be permanently
 539          allocated, so we don't free this string.  */
 540       alc_entry = xmalloc (strlen (initial_symbol_char)
 541                            + strlen (entry)
 542                            + 1);
 543       strcpy (alc_entry, initial_symbol_char);
 544       strcat (alc_entry, entry);
 545       entry = alc_entry;
 546     }
 547
 548   lang_default_entry (entry);
 549 }
 550
 551 static void
 552 set_pep_subsystem (void)
 553 {
 554   const char *sver;
 555   char *end;
 556   int len;
 557   int i;
 558   unsigned long temp_subsystem;
 559   static const struct
 560     {
 561       const char *name;
 562       const int value;
 563     }
 564   v[] =
 565     {
 566       { "native",  1 },
 567       { "windows", 2 },
 568       { "console", 3 },
 569       { "posix",   7 },
 570       { "wince",   9 },
 571       { "xbox",   14 },
 572       { NULL, 0 }
 573     };
 574
 575   /* Check for the presence of a version number.  */
 576   sver = strchr (optarg, ':');
 577   if (sver == NULL)
 578     len = strlen (optarg);
 579   else
 580     {
 581       len = sver - optarg;
 582       set_pep_name ("__major_subsystem_version__",
 583                     strtoul (sver + 1, &end, 0));
 584       if (*end == '.')
 585         set_pep_name ("__minor_subsystem_version__",
 586                       strtoul (end + 1, &end, 0));
 587       if (*end != '\0')
 588         einfo (_("%P: warning: bad version number in -subsystem option\n"));
 589     }
 590
 591   /* Check for numeric subsystem.  */
 592   temp_subsystem = strtoul (optarg, & end, 0);
 593   if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
 594     {
 595       /* Search list for a numeric match to use its entry point.  */
 596       for (i = 0; v[i].name; i++)
 597         if (v[i].value == (int) temp_subsystem)
 598           break;
 599
 600       /* Use this subsystem.  */
 601       pep_subsystem = (int) temp_subsystem;
 602     }
 603   else
 604     {
 605       /* Search for subsystem by name.  */
 606       for (i = 0; v[i].name; i++)
 607         if (strncmp (optarg, v[i].name, len) == 0
 608             && v[i].name[len] == '\0')
 609           break;
 610
 611       if (v[i].name == NULL)
 612         {
 613           einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
 614           return;
 615         }
 616
 617       pep_subsystem = v[i].value;
 618     }
 619
 620   set_pep_name ("__subsystem__", pep_subsystem);
 621
 622   return;
 623 }
 624
 625
 626 static void
 627 set_pep_value (char *name)
 628 {
 629   char *end;
 630
 631   set_pep_name (name,  (bfd_vma) strtoull (optarg, &end, 0));
 632
 633   if (end == optarg)
 634     einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
 635
 636   optarg = end;
 637 }
 638
 639
 640 static void
 641 set_pep_stack_heap (char *resname, char *comname)
 642 {
 643   set_pep_value (resname);
 644
 645   if (*optarg == ',')
 646     {
 647       optarg++;
 648       set_pep_value (comname);
 649     }
 650   else if (*optarg)
 651     einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
 652 }
 653
 654 #define DEFAULT_BUILD_ID_STYLE  "md5"
 655
 656 static bfd_boolean
 657 gld${EMULATION_NAME}_handle_option (int optc)
 658 {
 659   is_underscoring ();
 660   switch (optc)
 661     {
 662     default:
 663       return FALSE;
 664
 665     case OPTION_BASE_FILE:
 666       link_info.base_file = fopen (optarg, FOPEN_WB);
 667       if (link_info.base_file == NULL)
 668         einfo (_("%F%P: cannot open base file %s\n"), optarg);
 669       break;
 670
 671       /* PE options.  */
 672     case OPTION_HEAP:
 673       set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
 674       break;
 675     case OPTION_STACK:
 676       set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
 677       break;
 678     case OPTION_SUBSYSTEM:
 679       set_pep_subsystem ();
 680       break;
 681     case OPTION_MAJOR_OS_VERSION:
 682       set_pep_value ("__major_os_version__");
 683       break;
 684     case OPTION_MINOR_OS_VERSION:
 685       set_pep_value ("__minor_os_version__");
 686       break;
 687     case OPTION_MAJOR_SUBSYSTEM_VERSION:
 688       set_pep_value ("__major_subsystem_version__");
 689       break;
 690     case OPTION_MINOR_SUBSYSTEM_VERSION:
 691       set_pep_value ("__minor_subsystem_version__");
 692       break;
 693     case OPTION_MAJOR_IMAGE_VERSION:
 694       set_pep_value ("__major_image_version__");
 695       break;
 696     case OPTION_MINOR_IMAGE_VERSION:
 697       set_pep_value ("__minor_image_version__");
 698       break;
 699     case OPTION_FILE_ALIGNMENT:
 700       set_pep_value ("__file_alignment__");
 701       break;
 702     case OPTION_SECTION_ALIGNMENT:
 703       set_pep_value ("__section_alignment__");
 704       break;
 705     case OPTION_DLL:
 706       set_pep_name ("__dll__", 1);
 707       break;
 708     case OPTION_IMAGE_BASE:
 709       set_pep_value ("__image_base__");
 710       break;
 711     case OPTION_SUPPORT_OLD_CODE:
 712       support_old_code = 1;
 713       break;
 714     case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
 715       pep_use_nul_prefixed_import_tables = TRUE;
 716       break;
 717     case OPTION_NO_LEADING_UNDERSCORE:
 718       pep_leading_underscore = 0;
 719       break;
 720     case OPTION_LEADING_UNDERSCORE:
 721       pep_leading_underscore = 1;
 722       break;
 723     case OPTION_INSERT_TIMESTAMP:
 724       insert_timestamp = TRUE;
 725       break;
 726     case OPTION_NO_INSERT_TIMESTAMP:
 727       insert_timestamp = FALSE;
 728       break;
 729 #ifdef DLL_SUPPORT
 730     case OPTION_OUT_DEF:
 731       pep_out_def_filename = xstrdup (optarg);
 732       break;
 733     case OPTION_EXPORT_ALL:
 734       pep_dll_export_everything = 1;
 735       break;
 736     case OPTION_EXCLUDE_SYMBOLS:
 737       pep_dll_add_excludes (optarg, EXCLUDESYMS);
 738       break;
 739     case OPTION_EXCLUDE_ALL_SYMBOLS:
 740       pep_dll_exclude_all_symbols = 1;
 741       break;
 742     case OPTION_EXCLUDE_LIBS:
 743       pep_dll_add_excludes (optarg, EXCLUDELIBS);
 744       break;
 745     case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
 746       pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
 747       break;
 748     case OPTION_KILL_ATS:
 749       pep_dll_kill_ats = 1;
 750       break;
 751     case OPTION_STDCALL_ALIASES:
 752       pep_dll_stdcall_aliases = 1;
 753       break;
 754     case OPTION_ENABLE_STDCALL_FIXUP:
 755       pep_enable_stdcall_fixup = 1;
 756       break;
 757     case OPTION_DISABLE_STDCALL_FIXUP:
 758       pep_enable_stdcall_fixup = 0;
 759       break;
 760     case OPTION_WARN_DUPLICATE_EXPORTS:
 761       pep_dll_warn_dup_exports = 1;
 762       break;
 763     case OPTION_IMP_COMPAT:
 764       pep_dll_compat_implib = 1;
 765       break;
 766     case OPTION_ENABLE_AUTO_IMAGE_BASE:
 767       pep_enable_auto_image_base = 1;
 768       break;
 769     case OPTION_DISABLE_AUTO_IMAGE_BASE:
 770       pep_enable_auto_image_base = 0;
 771       break;
 772     case OPTION_DLL_SEARCH_PREFIX:
 773       pep_dll_search_prefix = xstrdup (optarg);
 774       break;
 775     case OPTION_NO_DEFAULT_EXCLUDES:
 776       pep_dll_do_default_excludes = 0;
 777       break;
 778     case OPTION_DLL_ENABLE_AUTO_IMPORT:
 779       link_info.pei386_auto_import = 1;
 780       break;
 781     case OPTION_DLL_DISABLE_AUTO_IMPORT:
 782       link_info.pei386_auto_import = 0;
 783       break;
 784     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
 785       link_info.pei386_runtime_pseudo_reloc = 2;
 786       break;
 787     case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
 788       link_info.pei386_runtime_pseudo_reloc = 0;
 789       break;
 790     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
 791       link_info.pei386_runtime_pseudo_reloc = 2;
 792       break;
 793     case OPTION_ENABLE_EXTRA_PE_DEBUG:
 794       pep_dll_extra_pe_debug = 1;
 795       break;
 796 #endif
 797     case OPTION_ENABLE_LONG_SECTION_NAMES:
 798       pep_use_coff_long_section_names = 1;
 799       break;
 800     case OPTION_DISABLE_LONG_SECTION_NAMES:
 801       pep_use_coff_long_section_names = 0;
 802       break;
 803     /*  Get DLLCharacteristics bits  */
 804     case OPTION_HIGH_ENTROPY_VA:
 805       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA;
 806       break;
 807     case OPTION_DYNAMIC_BASE:
 808       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
 809       break;
 810     case OPTION_FORCE_INTEGRITY:
 811       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
 812       break;
 813     case OPTION_NX_COMPAT:
 814       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
 815       break;
 816     case OPTION_NO_ISOLATION:
 817       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
 818       break;
 819     case OPTION_NO_SEH:
 820       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
 821       break;
 822     case OPTION_NO_BIND:
 823       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
 824       break;
 825     case OPTION_WDM_DRIVER:
 826       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
 827       break;
 828     case OPTION_TERMINAL_SERVER_AWARE:
 829       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
 830       break;
 831     case OPTION_BUILD_ID:
 832       if (emit_build_id != NULL)
 833         {
 834           free ((char *) emit_build_id);
 835           emit_build_id = NULL;
 836         }
 837       if (optarg == NULL)
 838         optarg = DEFAULT_BUILD_ID_STYLE;
 839       if (strcmp (optarg, "none"))
 840         emit_build_id = xstrdup (optarg);
 841       break;
 842     }
 843
 844   /*  Set DLLCharacteristics bits  */
 845   set_pep_name ("__dll_characteristics__", pe_dll_characteristics);
 846
 847   return TRUE;
 848 }
 849 \f
 850
 851 #ifdef DLL_SUPPORT
 852 static unsigned long
 853 strhash (const char *str)
 854 {
 855   const unsigned char *s;
 856   unsigned long hash;
 857   unsigned int c;
 858   unsigned int len;
 859
 860   hash = 0;
 861   len = 0;
 862   s = (const unsigned char *) str;
 863   while ((c = *s++) != '\0')
 864     {
 865       hash += c + (c << 17);
 866       hash ^= hash >> 2;
 867       ++len;
 868     }
 869   hash += len + (len << 17);
 870   hash ^= hash >> 2;
 871
 872   return hash;
 873 }
 874
 875 /* Use the output file to create a image base for relocatable DLLs.  */
 876
 877 static bfd_vma
 878 compute_dll_image_base (const char *ofile)
 879 {
 880   bfd_vma hash = (bfd_vma) strhash (ofile);
 881   return NT_DLL_AUTO_IMAGE_BASE + ((hash << 16) & NT_DLL_AUTO_IMAGE_MASK);
 882 }
 883 #endif
 884
 885 /* Assign values to the special symbols before the linker script is
 886    read.  */
 887
 888 static void
 889 gld_${EMULATION_NAME}_set_symbols (void)
 890 {
 891   /* Run through and invent symbols for all the
 892      names and insert the defaults.  */
 893   int j;
 894
 895   is_underscoring ();
 896
 897   if (!init[IMAGEBASEOFF].inited)
 898     {
 899       if (bfd_link_relocatable (&link_info))
 900         init[IMAGEBASEOFF].value = 0;
 901       else if (init[DLLOFF].value || bfd_link_dll (&link_info))
 902         {
 903 #ifdef DLL_SUPPORT
 904           init[IMAGEBASEOFF].value = (pep_enable_auto_image_base
 905                                       ? compute_dll_image_base (output_filename)
 906                                       : NT_DLL_IMAGE_BASE);
 907 #else
 908           init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
 909 #endif
 910         }
 911       else
 912         init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
 913       init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
 914     }
 915
 916   /* Don't do any symbol assignments if this is a relocatable link.  */
 917   if (bfd_link_relocatable (&link_info))
 918     return;
 919
 920   /* Glue the assignments into the abs section.  */
 921   push_stat_ptr (&abs_output_section->children);
 922
 923   for (j = 0; init[j].ptr; j++)
 924     {
 925       bfd_vma val = init[j].value;
 926       lang_assignment_statement_type *rv;
 927
 928       rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
 929                                             exp_intop (val), FALSE));
 930       if (init[j].size == sizeof (short))
 931         *(short *) init[j].ptr = (short) val;
 932       else if (init[j].size == sizeof (int))
 933         *(int *) init[j].ptr = (int) val;
 934       else if (init[j].size == sizeof (long))
 935         *(long *) init[j].ptr = (long) val;
 936       /* This might be a long long or other special type.  */
 937       else if (init[j].size == sizeof (bfd_vma))
 938         *(bfd_vma *) init[j].ptr = val;
 939       else      abort ();
 940       if (j == IMAGEBASEOFF)
 941         image_base_statement = rv;
 942     }
 943   /* Restore the pointer.  */
 944   pop_stat_ptr ();
 945
 946   if (pep.FileAlignment > pep.SectionAlignment)
 947     {
 948       einfo (_("%P: warning, file alignment > section alignment.\n"));
 949     }
 950 }
 951
 952 /* This is called after the linker script and the command line options
 953    have been read.  */
 954
 955 static void
 956 gld_${EMULATION_NAME}_after_parse (void)
 957 {
 958   /* PR ld/6744:  Warn the user if they have used an ELF-only
 959      option hoping it will work on PE+.  */
 960   if (link_info.export_dynamic)
 961     einfo (_("%P: warning: --export-dynamic is not supported for PE+ "
 962       "targets, did you mean --export-all-symbols?\n"));
 963
 964   set_entry_point ();
 965
 966   after_parse_default ();
 967 }
 968
 969 /* pep-dll.c directly accesses pep_data_import_dll,
 970    so it must be defined outside of #ifdef DLL_SUPPORT.
 971    Note - this variable is deliberately not initialised.
 972    This allows it to be treated as a common varaible, and only
 973    exist in one incarnation in a multiple target enabled linker.  */
 974 char * pep_data_import_dll;
 975
 976 #ifdef DLL_SUPPORT
 977 static struct bfd_link_hash_entry *pep_undef_found_sym;
 978
 979 static bfd_boolean
 980 pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
 981 {
 982   int sl;
 983   char *string = inf;
 984   const char *hs = h->root.string;
 985
 986   sl = strlen (string);
 987   if (h->type == bfd_link_hash_defined
 988       && ((*hs == '@' && *string == '_'
 989                    && strncmp (hs + 1, string + 1, sl - 1) == 0)
 990                   || strncmp (hs, string, sl) == 0)
 991       && h->root.string[sl] == '@')
 992     {
 993       pep_undef_found_sym = h;
 994       return FALSE;
 995     }
 996   return TRUE;
 997 }
 998
 999 static void
1000 pep_fixup_stdcalls (void)
1001 {
1002   static int gave_warning_message = 0;
1003   struct bfd_link_hash_entry *undef, *sym;
1004
1005   if (pep_dll_extra_pe_debug)
1006     printf ("%s\n", __FUNCTION__);
1007
1008   for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1009     if (undef->type == bfd_link_hash_undefined)
1010       {
1011         char* at = strchr (undef->root.string, '@');
1012         int lead_at = (*undef->root.string == '@');
1013         if (lead_at)
1014           at = strchr (undef->root.string + 1, '@');
1015         if (at || lead_at)
1016           {
1017             /* The symbol is a stdcall symbol, so let's look for a
1018                cdecl symbol with the same name and resolve to that.  */
1019             char *cname = xstrdup (undef->root.string);
1020
1021             if (lead_at)
1022               *cname = '_';
1023             at = strchr (cname, '@');
1024             if (at)
1025               *at = 0;
1026             sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1027
1028             if (sym && sym->type == bfd_link_hash_defined)
1029               {
1030                 undef->type = bfd_link_hash_defined;
1031                 undef->u.def.value = sym->u.def.value;
1032                 undef->u.def.section = sym->u.def.section;
1033
1034                 if (pep_enable_stdcall_fixup == -1)
1035                   {
1036                     einfo (_("Warning: resolving %s by linking to %s\n"),
1037                            undef->root.string, cname);
1038                     if (! gave_warning_message)
1039                       {
1040                         gave_warning_message = 1;
1041                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1042                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1043                       }
1044                   }
1045               }
1046           }
1047         else
1048           {
1049             /* The symbol is a cdecl symbol, so we look for stdcall
1050                symbols - which means scanning the whole symbol table.  */
1051             pep_undef_found_sym = 0;
1052             bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
1053                                     (char *) undef->root.string);
1054             sym = pep_undef_found_sym;
1055             if (sym)
1056               {
1057                 undef->type = bfd_link_hash_defined;
1058                 undef->u.def.value = sym->u.def.value;
1059                 undef->u.def.section = sym->u.def.section;
1060
1061                 if (pep_enable_stdcall_fixup == -1)
1062                   {
1063                     einfo (_("Warning: resolving %s by linking to %s\n"),
1064                            undef->root.string, sym->root.string);
1065                     if (! gave_warning_message)
1066                       {
1067                         gave_warning_message = 1;
1068                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1069                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1070                       }
1071                   }
1072               }
1073           }
1074       }
1075 }
1076
1077 static int
1078 make_import_fixup (arelent *rel, asection *s, char *name)
1079 {
1080   struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1081   char addend[8];
1082   bfd_vma _addend = 0;
1083   int suc = 0;
1084
1085   if (pep_dll_extra_pe_debug)
1086     printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1087             (unsigned long) rel->address, (long) rel->addend);
1088
1089   memset (addend, 0, sizeof (addend));
1090   switch ((rel->howto->bitsize))
1091     {
1092     case 8:
1093       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
1094       if (suc && rel->howto->pc_relative)
1095         _addend = bfd_get_signed_8 (s->owner, addend);
1096       else if (suc)
1097         _addend = bfd_get_8 (s->owner, addend);
1098       break;
1099     case 16:
1100       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
1101       if (suc && rel->howto->pc_relative)
1102         _addend = bfd_get_signed_16 (s->owner, addend);
1103       else if (suc)
1104         _addend = bfd_get_16 (s->owner, addend);
1105       break;
1106     case 32:
1107       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
1108       if (suc && rel->howto->pc_relative)
1109         _addend = bfd_get_signed_32 (s->owner, addend);
1110       else if (suc)
1111         _addend = bfd_get_32 (s->owner, addend);
1112       break;
1113     case 64:
1114       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
1115       if (suc)
1116         _addend = bfd_get_64 (s->owner, addend);
1117       break;
1118     }
1119   if (! suc)
1120     einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1121            s->owner, s, rel->address);
1122
1123   if (pep_dll_extra_pe_debug)
1124     {
1125       printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx",
1126               (long) _addend, (long) rel->addend, (long) rel->address);
1127       if (rel->howto->pc_relative)
1128         printf (" pcrel");
1129       printf (" %d bit rel.\n", (int) rel->howto->bitsize);
1130     }
1131   pep_create_import_fixup (rel, s, _addend, name);
1132
1133   return 1;
1134 }
1135
1136 static void
1137 pep_find_data_imports (void)
1138 {
1139   struct bfd_link_hash_entry *undef, *sym;
1140   size_t namelen;
1141   char *buf, *name;
1142
1143   if (link_info.pei386_auto_import == 0)
1144     return;
1145
1146   namelen = 0;
1147   for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1148     {
1149       if (undef->type == bfd_link_hash_undefined)
1150         {
1151           size_t len = strlen (undef->root.string);
1152           if (namelen < len)
1153             namelen = len;
1154         }
1155     }
1156   if (namelen == 0)
1157     return;
1158
1159   /* We are being a bit cunning here.  The buffer will have space for
1160      prefixes at the beginning.  The prefix is modified here and in a
1161      number of functions called from this function.  */
1162 #define PREFIX_LEN 32
1163   buf = xmalloc (PREFIX_LEN + namelen + 1);
1164   name = buf + PREFIX_LEN;
1165
1166   for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1167     {
1168       if (undef->type == bfd_link_hash_undefined)
1169         {
1170           char *impname;
1171
1172           if (pep_dll_extra_pe_debug)
1173             printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1174
1175           strcpy (name, undef->root.string);
1176           impname = name - (sizeof "__imp_" - 1);
1177           memcpy (impname, "__imp_", sizeof "__imp_" - 1);
1178
1179           sym = bfd_link_hash_lookup (link_info.hash, impname, 0, 0, 1);
1180
1181           if (sym && sym->type == bfd_link_hash_defined)
1182             {
1183               bfd *b = sym->u.def.section->owner;
1184               asymbol **symbols;
1185               int nsyms, i;
1186
1187               if (!bfd_generic_link_read_symbols (b))
1188                 {
1189                   einfo (_("%B%F: could not read symbols: %E\n"), b);
1190                   return;
1191                 }
1192
1193               symbols = bfd_get_outsymbols (b);
1194               nsyms = bfd_get_symcount (b);
1195
1196               for (i = 0; i < nsyms; i++)
1197                 {
1198                   if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1199                     continue;
1200
1201                   if (pep_dll_extra_pe_debug)
1202                     printf ("->%s\n", symbols[i]->name);
1203
1204                   pep_data_import_dll = (char *) (symbols[i]->name
1205                                                   + U_SIZE ("_head_") - 1);
1206                   break;
1207                 }
1208
1209               pep_walk_relocs_of_symbol (&link_info, name, make_import_fixup);
1210
1211               /* Let's differentiate it somehow from defined.  */
1212               undef->type = bfd_link_hash_defweak;
1213               /* We replace original name with __imp_ prefixed, this
1214                  1) may trash memory 2) leads to duplicate symbol generation.
1215                  Still, IMHO it's better than having name polluted.  */
1216               undef->root.string = sym->root.string;
1217               undef->u.def.value = sym->u.def.value;
1218               undef->u.def.section = sym->u.def.section;
1219             }
1220         }
1221     }
1222   free (buf);
1223 }
1224
1225 static bfd_boolean
1226 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1227 {
1228   printf ("+%s\n", h->string);
1229
1230   return TRUE;
1231 }
1232 #endif /* DLL_SUPPORT */
1233
1234 static void
1235 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1236 {
1237   int *found = (int *) obj;
1238
1239   if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1240     *found = 1;
1241 }
1242
1243 static bfd_boolean
1244 pecoff_checksum_contents (bfd *abfd,
1245                           void (*process) (const void *, size_t, void *),
1246                           void *arg)
1247 {
1248   file_ptr filepos = (file_ptr) 0;
1249
1250   while (1)
1251     {
1252       unsigned char b;
1253       int status;
1254
1255       if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1256         return 0;
1257
1258       status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1259       if (status < 1)
1260         {
1261           break;
1262         }
1263
1264       (*process) (&b, 1, arg);
1265       filepos += 1;
1266     }
1267
1268   return TRUE;
1269 }
1270
1271 static bfd_boolean
1272 write_build_id (bfd *abfd)
1273 {
1274   struct pe_tdata *t = pe_data (abfd);
1275   asection *asec;
1276   struct bfd_link_order *link_order = NULL;
1277   unsigned char *contents;
1278   bfd_size_type size;
1279   bfd_size_type build_id_size;
1280   unsigned char *build_id;
1281
1282   /* Find the section the .buildid output section has been merged info.  */
1283   for (asec = abfd->sections; asec != NULL; asec = asec->next)
1284     {
1285       struct bfd_link_order *l = NULL;
1286       for (l = asec->map_head.link_order; l != NULL; l = l->next)
1287         {
1288           if (l->type == bfd_indirect_link_order)
1289             {
1290               if (l->u.indirect.section == t->build_id.sec)
1291                 {
1292                   link_order = l;
1293                   break;
1294                 }
1295             }
1296         }
1297
1298       if (link_order)
1299         break;
1300     }
1301
1302   if (!link_order)
1303     {
1304       einfo (_("%P: warning: .buildid section discarded,"
1305                " --build-id ignored.\n"));
1306       return TRUE;
1307     }
1308
1309   if (t->build_id.sec->contents == NULL)
1310     t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1311   contents = t->build_id.sec->contents;
1312   size = t->build_id.sec->size;
1313
1314   build_id_size = compute_build_id_size (t->build_id.style);
1315   build_id = xmalloc (build_id_size);
1316   generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1317
1318   bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1319
1320   /* Construct a debug directory entry which points to an immediately following CodeView record.  */
1321   struct internal_IMAGE_DEBUG_DIRECTORY idd;
1322   idd.Characteristics = 0;
1323   idd.TimeDateStamp = 0;
1324   idd.MajorVersion = 0;
1325   idd.MinorVersion = 0;
1326   idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1327   idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1328   idd.AddressOfRawData = asec->vma - ib + link_order->offset
1329     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1330   idd.PointerToRawData = asec->filepos + link_order->offset
1331     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1332
1333   struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1334   _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1335
1336   /* Write the debug directory enttry */
1337   if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1338     return 0;
1339
1340   if (bfd_bwrite (contents, size, abfd) != size)
1341     return 0;
1342
1343   /* Construct the CodeView record.  */
1344   CODEVIEW_INFO cvinfo;
1345   cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1346   cvinfo.Age = 1;
1347
1348   /* Zero pad or truncate the generated build_id to fit in the CodeView record.  */
1349   memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1350   memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1351           ? CV_INFO_SIGNATURE_LENGTH :  build_id_size);
1352
1353   free (build_id);
1354
1355   /* Write the codeview record.  */
1356   if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1357     return 0;
1358
1359   /* Record the location of the debug directory in the data directory.  */
1360   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1361     = asec->vma  - ib + link_order->offset;
1362   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1363     = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1364
1365   return TRUE;
1366 }
1367
1368 /* Make .buildid section, and set up coff_tdata->build_id. */
1369 static bfd_boolean
1370 setup_build_id (bfd *ibfd)
1371 {
1372   asection *s;
1373   flagword flags;
1374
1375   if (!validate_build_id_style (emit_build_id))
1376     {
1377       einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1378       return FALSE;
1379     }
1380
1381   flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1382            | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1383   s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1384   if (s != NULL)
1385     {
1386       struct pe_tdata *t = pe_data (link_info.output_bfd);
1387       t->build_id.after_write_object_contents = &write_build_id;
1388       t->build_id.style = emit_build_id;
1389       t->build_id.sec = s;
1390
1391       /* Section is a fixed size:
1392          One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1393          pointing at a CV_INFO_PDB70 record containing the build-id, with a
1394          null byte for PdbFileName.  */
1395       s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1396         + sizeof (CV_INFO_PDB70) + 1;
1397
1398       return TRUE;
1399     }
1400
1401   einfo ("%P: warning: Cannot create .buildid section,"
1402          " --build-id ignored.\n");
1403   return FALSE;
1404 }
1405
1406 static void
1407 gld_${EMULATION_NAME}_after_open (void)
1408 {
1409   after_open_default ();
1410
1411   is_underscoring ();
1412 #ifdef DLL_SUPPORT
1413   if (pep_dll_extra_pe_debug)
1414     {
1415       bfd *a;
1416       struct bfd_link_hash_entry *sym;
1417
1418       printf ("%s()\n", __FUNCTION__);
1419
1420       for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1421         printf ("-%s\n", sym->root.string);
1422       bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1423
1424       for (a = link_info.input_bfds; a; a = a->link.next)
1425         printf ("*%s\n",a->filename);
1426     }
1427 #endif
1428
1429   if (emit_build_id != NULL)
1430     {
1431       bfd *abfd;
1432
1433       /* Find a COFF input.  */
1434       for (abfd = link_info.input_bfds;
1435            abfd != (bfd *) NULL; abfd = abfd->link.next)
1436         if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1437           break;
1438
1439       /* If there are no COFF input files do not try to
1440          add a build-id section.  */
1441       if (abfd == NULL
1442           || !setup_build_id (abfd))
1443         {
1444           free ((char *) emit_build_id);
1445           emit_build_id = NULL;
1446         }
1447     }
1448
1449   /* Pass the wacky PE command line options into the output bfd.
1450      FIXME: This should be done via a function, rather than by
1451      including an internal BFD header.  */
1452
1453   if (coff_data (link_info.output_bfd) == NULL
1454       || coff_data (link_info.output_bfd)->pe == 0)
1455     einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1456            link_info.output_bfd);
1457
1458   pe_data (link_info.output_bfd)->pe_opthdr = pep;
1459   pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1460   pe_data (link_info.output_bfd)->real_flags |= real_flags;
1461   pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1462
1463   /* At this point we must decide whether to use long section names
1464      in the output or not.  If the user hasn't explicitly specified
1465      on the command line, we leave it to the default for the format
1466      (object files yes, image files no), except if there is debug
1467      information present; GDB relies on the long section names to
1468      find it, so enable it in that case.  */
1469   if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1470     {
1471       if (bfd_link_relocatable (&link_info))
1472         pep_use_coff_long_section_names = 1;
1473       else
1474         {
1475           /* Iterate over all sections of all input BFDs, checking
1476              for any that begin 'debug_' and are long names.  */
1477           LANG_FOR_EACH_INPUT_STATEMENT (is)
1478           {
1479             int found_debug = 0;
1480
1481             bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1482             if (found_debug)
1483               {
1484                 pep_use_coff_long_section_names = 1;
1485                 break;
1486               }
1487           }
1488         }
1489     }
1490
1491   pep_output_file_set_long_section_names (link_info.output_bfd);
1492
1493 #ifdef DLL_SUPPORT
1494   if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
1495     pep_fixup_stdcalls ();
1496
1497   pep_process_import_defs (link_info.output_bfd, &link_info);
1498
1499   pep_find_data_imports ();
1500
1501   /* As possibly new symbols are added by imports, we rerun
1502      stdcall/fastcall fixup here.  */
1503   if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
1504     pep_fixup_stdcalls ();
1505
1506 #ifndef TARGET_IS_i386pep
1507   if (bfd_link_pic (&link_info))
1508 #else
1509   if (!bfd_link_relocatable (&link_info))
1510 #endif
1511     pep_dll_build_sections (link_info.output_bfd, &link_info);
1512
1513 #ifndef TARGET_IS_i386pep
1514   else
1515     pep_exe_build_sections (link_info.output_bfd, &link_info);
1516 #endif
1517 #endif /* DLL_SUPPORT */
1518
1519   {
1520     /* This next chunk of code tries to detect the case where you have
1521        two import libraries for the same DLL (specifically,
1522        symbolically linking libm.a and libc.a in cygwin to
1523        libcygwin.a).  In those cases, it's possible for function
1524        thunks from the second implib to be used but without the
1525        head/tail objects, causing an improper import table.  We detect
1526        those cases and rename the "other" import libraries to match
1527        the one the head/tail come from, so that the linker will sort
1528        things nicely and produce a valid import table.  */
1529
1530     LANG_FOR_EACH_INPUT_STATEMENT (is)
1531       {
1532         if (is->the_bfd->my_archive)
1533           {
1534             int idata2 = 0, reloc_count=0, is_imp = 0;
1535             asection *sec;
1536
1537             /* See if this is an import library thunk.  */
1538             for (sec = is->the_bfd->sections; sec; sec = sec->next)
1539               {
1540                 if (strcmp (sec->name, ".idata\$2") == 0)
1541                   idata2 = 1;
1542                 if (CONST_STRNEQ (sec->name, ".idata\$"))
1543                   is_imp = 1;
1544                 reloc_count += sec->reloc_count;
1545               }
1546
1547             if (is_imp && !idata2 && reloc_count)
1548               {
1549                 /* It is, look for the reference to head and see if it's
1550                    from our own library.  */
1551                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1552                   {
1553                     int i;
1554                     long relsize;
1555                     asymbol **symbols;
1556                     arelent **relocs;
1557                     int nrelocs;
1558
1559                     relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1560                     if (relsize < 1)
1561                       break;
1562
1563                     if (!bfd_generic_link_read_symbols (is->the_bfd))
1564                       {
1565                         einfo (_("%B%F: could not read symbols: %E\n"),
1566                                is->the_bfd);
1567                         return;
1568                       }
1569                     symbols = bfd_get_outsymbols (is->the_bfd);
1570
1571                     relocs = xmalloc ((size_t) relsize);
1572                     nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1573                                                       relocs, symbols);
1574                     if (nrelocs < 0)
1575                       {
1576                         free (relocs);
1577                         einfo ("%X%P: unable to process relocs: %E\n");
1578                         return;
1579                       }
1580
1581                     for (i = 0; i < nrelocs; i++)
1582                       {
1583                         struct bfd_symbol *s;
1584                         struct bfd_link_hash_entry * blhe;
1585                         char *other_bfd_filename;
1586                         char *n;
1587
1588                         s = (relocs[i]->sym_ptr_ptr)[0];
1589
1590                         if (s->flags & BSF_LOCAL)
1591                           continue;
1592
1593                         /* Thunk section with reloc to another bfd.  */
1594                         blhe = bfd_link_hash_lookup (link_info.hash,
1595                                                      s->name,
1596                                                      FALSE, FALSE, TRUE);
1597
1598                         if (blhe == NULL
1599                             || blhe->type != bfd_link_hash_defined)
1600                           continue;
1601
1602                         other_bfd_filename
1603                           = blhe->u.def.section->owner->my_archive
1604                             ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1605                             : bfd_get_filename (blhe->u.def.section->owner);
1606
1607                         if (filename_cmp (bfd_get_filename
1608                                             (is->the_bfd->my_archive),
1609                                           other_bfd_filename) == 0)
1610                           continue;
1611
1612                         /* Rename this implib to match the other one.  */
1613                         n = xmalloc (strlen (other_bfd_filename) + 1);
1614                         strcpy (n, other_bfd_filename);
1615                         is->the_bfd->my_archive->filename = n;
1616                       }
1617
1618                     free (relocs);
1619                     /* Note - we do not free the symbols,
1620                        they are now cached in the BFD.  */
1621                   }
1622               }
1623           }
1624       }
1625   }
1626
1627   {
1628     int is_ms_arch = 0;
1629     bfd *cur_arch = 0;
1630     lang_input_statement_type *is2;
1631     lang_input_statement_type *is3;
1632
1633     /* Careful - this is a shell script.  Watch those dollar signs! */
1634     /* Microsoft import libraries have every member named the same,
1635        and not in the right order for us to link them correctly.  We
1636        must detect these and rename the members so that they'll link
1637        correctly.  There are three types of objects: the head, the
1638        thunks, and the sentinel(s).  The head is easy; it's the one
1639        with idata2.  We assume that the sentinels won't have relocs,
1640        and the thunks will.  It's easier than checking the symbol
1641        table for external references.  */
1642     LANG_FOR_EACH_INPUT_STATEMENT (is)
1643       {
1644         if (is->the_bfd->my_archive)
1645           {
1646             char *pnt;
1647             bfd *arch = is->the_bfd->my_archive;
1648
1649             if (cur_arch != arch)
1650               {
1651                 cur_arch = arch;
1652                 is_ms_arch = 1;
1653
1654                 for (is3 = is;
1655                      is3 && is3->the_bfd->my_archive == arch;
1656                      is3 = (lang_input_statement_type *) is3->next)
1657                   {
1658                     /* A MS dynamic import library can also contain static
1659                        members, so look for the first element with a .dll
1660                        extension, and use that for the remainder of the
1661                        comparisons.  */
1662                     pnt = strrchr (is3->the_bfd->filename, '.');
1663                     if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1664                       break;
1665                   }
1666
1667                 if (is3 == NULL)
1668                   is_ms_arch = 0;
1669                 else
1670                   {
1671                     /* OK, found one.  Now look to see if the remaining
1672                        (dynamic import) members use the same name.  */
1673                     for (is2 = is;
1674                          is2 && is2->the_bfd->my_archive == arch;
1675                          is2 = (lang_input_statement_type *) is2->next)
1676                       {
1677                         /* Skip static members, ie anything with a .obj
1678                            extension.  */
1679                         pnt = strrchr (is2->the_bfd->filename, '.');
1680                         if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1681                           continue;
1682
1683                         if (filename_cmp (is3->the_bfd->filename,
1684                                           is2->the_bfd->filename))
1685                           {
1686                             is_ms_arch = 0;
1687                             break;
1688                           }
1689                       }
1690                   }
1691               }
1692
1693             /* This fragment might have come from an .obj file in a Microsoft
1694                import, and not an actual import record. If this is the case,
1695                then leave the filename alone.  */
1696             pnt = strrchr (is->the_bfd->filename, '.');
1697
1698             if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1699               {
1700                 int idata2 = 0, reloc_count=0;
1701                 asection *sec;
1702                 char *new_name, seq;
1703
1704                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1705                   {
1706                     if (strcmp (sec->name, ".idata\$2") == 0)
1707                       idata2 = 1;
1708                     reloc_count += sec->reloc_count;
1709                   }
1710
1711                 if (idata2) /* .idata2 is the TOC */
1712                   seq = 'a';
1713                 else if (reloc_count > 0) /* thunks */
1714                   seq = 'b';
1715                 else /* sentinel */
1716                   seq = 'c';
1717
1718                 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1719                 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1720                 is->the_bfd->filename = new_name;
1721
1722                 new_name = xmalloc (strlen (is->filename) + 3);
1723                 sprintf (new_name, "%s.%c", is->filename, seq);
1724                 is->filename = new_name;
1725               }
1726           }
1727       }
1728   }
1729 }
1730 \f
1731 static void
1732 gld_${EMULATION_NAME}_before_allocation (void)
1733 {
1734   is_underscoring ();
1735   before_allocation_default ();
1736 }
1737 \f
1738 #ifdef DLL_SUPPORT
1739 /* This is called when an input file isn't recognized as a BFD.  We
1740    check here for .DEF files and pull them in automatically.  */
1741
1742 static int
1743 saw_option (char *option)
1744 {
1745   int i;
1746
1747   is_underscoring ();
1748
1749   for (i = 0; init[i].ptr; i++)
1750     if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1751       return init[i].inited;
1752   return 0;
1753 }
1754 #endif /* DLL_SUPPORT */
1755
1756 static bfd_boolean
1757 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1758 {
1759 #ifdef DLL_SUPPORT
1760   const char *ext = entry->filename + strlen (entry->filename) - 4;
1761
1762   if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1763     {
1764       pep_def_file = def_file_parse (entry->filename, pep_def_file);
1765
1766       if (pep_def_file)
1767         {
1768           int i, buflen=0, len;
1769           char *buf;
1770
1771           for (i = 0; i < pep_def_file->num_exports; i++)
1772             {
1773               len = strlen (pep_def_file->exports[i].internal_name);
1774               if (buflen < len + 2)
1775                 buflen = len + 2;
1776             }
1777
1778           buf = xmalloc (buflen);
1779
1780           for (i = 0; i < pep_def_file->num_exports; i++)
1781             {
1782               struct bfd_link_hash_entry *h;
1783
1784               sprintf (buf, "%s%s", U (""),
1785                        pep_def_file->exports[i].internal_name);
1786
1787               h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1788               if (h == (struct bfd_link_hash_entry *) NULL)
1789                 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1790               if (h->type == bfd_link_hash_new)
1791                 {
1792                   h->type = bfd_link_hash_undefined;
1793                   h->u.undef.abfd = NULL;
1794                   bfd_link_add_undef (link_info.hash, h);
1795                 }
1796             }
1797           free (buf);
1798
1799           /* def_file_print (stdout, pep_def_file); */
1800           if (pep_def_file->is_dll == 1)
1801             link_info.type = type_dll;
1802
1803           if (pep_def_file->base_address != (bfd_vma)(-1))
1804             {
1805               pep.ImageBase
1806                 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1807                 = init[IMAGEBASEOFF].value
1808                 = pep_def_file->base_address;
1809               init[IMAGEBASEOFF].inited = 1;
1810               if (image_base_statement)
1811                 image_base_statement->exp
1812                   = exp_assign ("__image_base__", exp_intop (pep.ImageBase),
1813                                 FALSE);
1814             }
1815
1816           if (pep_def_file->stack_reserve != -1
1817               && ! saw_option ("__size_of_stack_reserve__"))
1818             {
1819               pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1820               if (pep_def_file->stack_commit != -1)
1821                 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1822             }
1823           if (pep_def_file->heap_reserve != -1
1824               && ! saw_option ("__size_of_heap_reserve__"))
1825             {
1826               pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1827               if (pep_def_file->heap_commit != -1)
1828                 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1829             }
1830           return TRUE;
1831         }
1832     }
1833 #endif
1834   return FALSE;
1835 }
1836
1837 static bfd_boolean
1838 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1839 {
1840   is_underscoring ();
1841 #ifdef DLL_SUPPORT
1842 #ifdef TARGET_IS_i386pep
1843   pep_dll_id_target ("pei-x86-64");
1844 #endif
1845   if (pep_bfd_is_dll (entry->the_bfd))
1846     return pep_implied_import_dll (entry->filename);
1847 #endif
1848   return FALSE;
1849 }
1850
1851 static void
1852 gld_${EMULATION_NAME}_finish (void)
1853 {
1854   is_underscoring ();
1855   finish_default ();
1856
1857 #ifdef DLL_SUPPORT
1858   if (bfd_link_pic (&link_info)
1859       || (!bfd_link_relocatable (&link_info)
1860           && pep_def_file->num_exports != 0))
1861     {
1862       pep_dll_fill_sections (link_info.output_bfd, &link_info);
1863       if (command_line.out_implib_filename)
1864         pep_dll_generate_implib (pep_def_file,
1865                                  command_line.out_implib_filename, &link_info);
1866     }
1867
1868   if (pep_out_def_filename)
1869     pep_dll_generate_def_file (pep_out_def_filename);
1870 #endif /* DLL_SUPPORT */
1871
1872   /* I don't know where .idata gets set as code, but it shouldn't be.  */
1873   {
1874     asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1875
1876     if (asec)
1877       {
1878         asec->flags &= ~SEC_CODE;
1879         asec->flags |= SEC_DATA;
1880       }
1881   }
1882 }
1883
1884 \f
1885 /* Place an orphan section.
1886
1887    We use this to put sections in a reasonable place in the file, and
1888    to ensure that they are aligned as required.
1889
1890    We handle grouped sections here as well.  A section named .foo\$nn
1891    goes into the output section .foo.  All grouped sections are sorted
1892    by name.
1893
1894    Grouped sections for the default sections are handled by the
1895    default linker script using wildcards, and are sorted by
1896    sort_sections.  */
1897
1898 static lang_output_section_statement_type *
1899 gld_${EMULATION_NAME}_place_orphan (asection *s,
1900                                     const char *secname,
1901                                     int constraint)
1902 {
1903   const char *orig_secname = secname;
1904   char *dollar = NULL;
1905   lang_output_section_statement_type *os;
1906   lang_statement_list_type add_child;
1907   lang_output_section_statement_type *match_by_name = NULL;
1908   lang_statement_union_type **pl;
1909
1910   /* Look through the script to see where to place this section.  */
1911   if (!bfd_link_relocatable (&link_info)
1912       && (dollar = strchr (secname, '\$')) != NULL)
1913     {
1914       size_t len = dollar - secname;
1915       char *newname = xmalloc (len + 1);
1916       memcpy (newname, secname, len);
1917       newname[len] = '\0';
1918       secname = newname;
1919     }
1920
1921   lang_list_init (&add_child);
1922
1923   os = NULL;
1924   if (constraint == 0)
1925     for (os = lang_output_section_find (secname);
1926          os != NULL;
1927          os = next_matching_output_section_statement (os, 0))
1928       {
1929         /* If we don't match an existing output section, tell
1930            lang_insert_orphan to create a new output section.  */
1931         constraint = SPECIAL;
1932
1933         if (os->bfd_section != NULL
1934             && (os->bfd_section->flags == 0
1935                 || ((s->flags ^ os->bfd_section->flags)
1936                     & (SEC_LOAD | SEC_ALLOC)) == 0))
1937           {
1938             /* We already have an output section statement with this
1939                name, and its bfd section has compatible flags.
1940                If the section already exists but does not have any flags set,
1941                then it has been created by the linker, probably as a result of
1942                a --section-start command line switch.  */
1943             lang_add_section (&add_child, s, NULL, os);
1944             break;
1945           }
1946
1947         /* Save unused output sections in case we can match them
1948            against orphans later.  */
1949         if (os->bfd_section == NULL)
1950           match_by_name = os;
1951       }
1952
1953   /* If we didn't match an active output section, see if we matched an
1954      unused one and use that.  */
1955   if (os == NULL && match_by_name)
1956     {
1957       lang_add_section (&match_by_name->children, s, NULL, match_by_name);
1958       return match_by_name;
1959     }
1960
1961   if (os == NULL)
1962     {
1963       static struct orphan_save hold[] =
1964         {
1965           { ".text",
1966             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1967             0, 0, 0, 0 },
1968           { ".idata",
1969             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1970             0, 0, 0, 0 },
1971           { ".rdata",
1972             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1973             0, 0, 0, 0 },
1974           { ".data",
1975             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1976             0, 0, 0, 0 },
1977           { ".bss",
1978             SEC_ALLOC,
1979             0, 0, 0, 0 }
1980         };
1981       enum orphan_save_index
1982         {
1983           orphan_text = 0,
1984           orphan_idata,
1985           orphan_rodata,
1986           orphan_data,
1987           orphan_bss
1988         };
1989       static int orphan_init_done = 0;
1990       struct orphan_save *place;
1991       lang_output_section_statement_type *after;
1992       etree_type *address;
1993       flagword flags;
1994       asection *nexts;
1995
1996       if (!orphan_init_done)
1997         {
1998           struct orphan_save *ho;
1999           for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2000             if (ho->name != NULL)
2001               {
2002                 ho->os = lang_output_section_find (ho->name);
2003                 if (ho->os != NULL && ho->os->flags == 0)
2004                   ho->os->flags = ho->flags;
2005               }
2006           orphan_init_done = 1;
2007         }
2008
2009       flags = s->flags;
2010       if (!bfd_link_relocatable (&link_info))
2011         {
2012           nexts = s;
2013           while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2014                                                         nexts)))
2015             if (nexts->output_section == NULL
2016                 && (nexts->flags & SEC_EXCLUDE) == 0
2017                 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2018                 && (nexts->owner->flags & DYNAMIC) == 0
2019                 && nexts->owner->usrdata != NULL
2020                 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2021                      ->flags.just_syms))
2022               flags = (((flags ^ SEC_READONLY)
2023                         | (nexts->flags ^ SEC_READONLY))
2024                        ^ SEC_READONLY);
2025         }
2026
2027       /* Try to put the new output section in a reasonable place based
2028          on the section name and section flags.  */
2029
2030       place = NULL;
2031       if ((flags & SEC_ALLOC) == 0)
2032         ;
2033       else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2034         place = &hold[orphan_bss];
2035       else if ((flags & SEC_READONLY) == 0)
2036         place = &hold[orphan_data];
2037       else if ((flags & SEC_CODE) == 0)
2038         {
2039           place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2040                                                      : &hold[orphan_rodata]);
2041         }
2042       else
2043         place = &hold[orphan_text];
2044
2045       after = NULL;
2046       if (place != NULL)
2047         {
2048           if (place->os == NULL)
2049             place->os = lang_output_section_find (place->name);
2050           after = place->os;
2051           if (after == NULL)
2052             after = lang_output_section_find_by_flags (s, flags, &place->os,
2053                                                        NULL);
2054           if (after == NULL)
2055             /* *ABS* is always the first output section statement.  */
2056             after = (&lang_output_section_statement.head
2057                      ->output_section_statement);
2058         }
2059
2060       /* All sections in an executable must be aligned to a page boundary.
2061          In a relocatable link, just preserve the incoming alignment; the
2062          address is discarded by lang_insert_orphan in that case, anyway.  */
2063       address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2064       os = lang_insert_orphan (s, secname, constraint, after, place, address,
2065                                &add_child);
2066       if (bfd_link_relocatable (&link_info))
2067         {
2068           os->section_alignment = s->alignment_power;
2069           os->bfd_section->alignment_power = s->alignment_power;
2070         }
2071     }
2072
2073   /* If the section name has a '\$', sort it with the other '\$'
2074      sections.  */
2075   for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2076     {
2077       lang_input_section_type *ls;
2078       const char *lname;
2079
2080       if ((*pl)->header.type != lang_input_section_enum)
2081         continue;
2082
2083       ls = &(*pl)->input_section;
2084
2085       lname = bfd_get_section_name (ls->section->owner, ls->section);
2086       if (strchr (lname, '\$') != NULL
2087           && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2088         break;
2089     }
2090
2091   if (add_child.head != NULL)
2092     {
2093       *add_child.tail = *pl;
2094       *pl = add_child.head;
2095     }
2096
2097   return os;
2098 }
2099
2100 static bfd_boolean
2101 gld_${EMULATION_NAME}_open_dynamic_archive
2102   (const char *arch ATTRIBUTE_UNUSED,
2103    search_dirs_type *search,
2104    lang_input_statement_type *entry)
2105 {
2106   static const struct
2107     {
2108       const char * format;
2109       bfd_boolean use_prefix;
2110     }
2111   libname_fmt [] =
2112     {
2113       /* Preferred explicit import library for dll's.  */
2114       { "lib%s.dll.a", FALSE },
2115       /* Alternate explicit import library for dll's.  */
2116       { "%s.dll.a", FALSE },
2117       /* "libfoo.a" could be either an import lib or a static lib.
2118           For backwards compatibility, libfoo.a needs to precede
2119           libfoo.dll and foo.dll in the search.  */
2120       { "lib%s.a", FALSE },
2121       /* The 'native' spelling of an import lib name is "foo.lib".  */
2122       { "%s.lib", FALSE },
2123 #ifdef DLL_SUPPORT
2124       /* Try "<prefix>foo.dll" (preferred dll name, if specified).  */
2125       { "%s%s.dll", TRUE },
2126 #endif
2127       /* Try "libfoo.dll" (default preferred dll name).  */
2128       { "lib%s.dll", FALSE },
2129       /* Finally try 'native' dll name "foo.dll".  */
2130       {  "%s.dll", FALSE },
2131       /* Note: If adding more formats to this table, make sure to check to
2132          see if their length is longer than libname_fmt[0].format, and if
2133          so, update the call to xmalloc() below.  */
2134       { NULL, FALSE }
2135     };
2136   static unsigned int format_max_len = 0;
2137   const char * filename;
2138   char * full_string;
2139   char * base_string;
2140   unsigned int i;
2141
2142
2143   if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2144     return FALSE;
2145
2146   filename = entry->filename;
2147
2148   if (format_max_len == 0)
2149     /* We need to allow space in the memory that we are going to allocate
2150        for the characters in the format string.  Since the format array is
2151        static we only need to calculate this information once.  In theory
2152        this value could also be computed statically, but this introduces
2153        the possibility for a discrepancy and hence a possible memory
2154        corruption.  The lengths we compute here will be too long because
2155        they will include any formating characters (%s) in the strings, but
2156        this will not matter.  */
2157     for (i = 0; libname_fmt[i].format; i++)
2158       if (format_max_len < strlen (libname_fmt[i].format))
2159         format_max_len = strlen (libname_fmt[i].format);
2160
2161   full_string = xmalloc (strlen (search->name)
2162                          + strlen (filename)
2163                          + format_max_len
2164 #ifdef DLL_SUPPORT
2165                          + (pep_dll_search_prefix
2166                             ? strlen (pep_dll_search_prefix) : 0)
2167 #endif
2168                          /* Allow for the terminating NUL and for the path
2169                             separator character that is inserted between
2170                             search->name and the start of the format string.  */
2171                          + 2);
2172
2173   sprintf (full_string, "%s/", search->name);
2174   base_string = full_string + strlen (full_string);
2175
2176   for (i = 0; libname_fmt[i].format; i++)
2177     {
2178 #ifdef DLL_SUPPORT
2179       if (libname_fmt[i].use_prefix)
2180         {
2181           if (!pep_dll_search_prefix)
2182             continue;
2183           sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
2184         }
2185       else
2186 #endif
2187         sprintf (base_string, libname_fmt[i].format, filename);
2188
2189       if (ldfile_try_open_bfd (full_string, entry))
2190         break;
2191     }
2192
2193   if (!libname_fmt[i].format)
2194     {
2195       free (full_string);
2196       return FALSE;
2197     }
2198
2199   entry->filename = full_string;
2200
2201   return TRUE;
2202 }
2203
2204 static int
2205 gld_${EMULATION_NAME}_find_potential_libraries
2206   (char *name, lang_input_statement_type *entry)
2207 {
2208   return ldfile_open_file_search (name, entry, "", ".lib");
2209 }
2210 \f
2211 static char *
2212 gld_${EMULATION_NAME}_get_script (int *isfile)
2213 EOF
2214 # Scripts compiled in.
2215 # sed commands to quote an ld script as a C string.
2216 sc="-f stringify.sed"
2217
2218 fragment <<EOF
2219 {
2220   *isfile = 0;
2221
2222   if (bfd_link_relocatable (&link_info) && config.build_constructors)
2223     return
2224 EOF
2225 sed $sc ldscripts/${EMULATION_NAME}.xu                  >> e${EMULATION_NAME}.c
2226 echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2227 sed $sc ldscripts/${EMULATION_NAME}.xr                  >> e${EMULATION_NAME}.c
2228 echo '  ; else if (!config.text_read_only) return'      >> e${EMULATION_NAME}.c
2229 sed $sc ldscripts/${EMULATION_NAME}.xbn                 >> e${EMULATION_NAME}.c
2230 echo '  ; else if (!config.magic_demand_paged) return'  >> e${EMULATION_NAME}.c
2231 sed $sc ldscripts/${EMULATION_NAME}.xn                  >> e${EMULATION_NAME}.c
2232 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2233 echo '  ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return'     >> e${EMULATION_NAME}.c
2234 sed $sc ldscripts/${EMULATION_NAME}.xa                  >> e${EMULATION_NAME}.c
2235 fi
2236 echo '  ; else return'                                  >> e${EMULATION_NAME}.c
2237 sed $sc ldscripts/${EMULATION_NAME}.x                   >> e${EMULATION_NAME}.c
2238 echo '; }'                                              >> e${EMULATION_NAME}.c
2239
2240 fragment <<EOF
2241
2242
2243 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2244 {
2245   gld_${EMULATION_NAME}_before_parse,
2246   syslib_default,
2247   hll_default,
2248   gld_${EMULATION_NAME}_after_parse,
2249   gld_${EMULATION_NAME}_after_open,
2250   after_allocation_default,
2251   set_output_arch_default,
2252   ldemul_default_target,
2253   gld_${EMULATION_NAME}_before_allocation,
2254   gld_${EMULATION_NAME}_get_script,
2255   "${EMULATION_NAME}",
2256   "${OUTPUT_FORMAT}",
2257   gld_${EMULATION_NAME}_finish,
2258   NULL, /* Create output section statements.  */
2259   gld_${EMULATION_NAME}_open_dynamic_archive,
2260   gld_${EMULATION_NAME}_place_orphan,
2261   gld_${EMULATION_NAME}_set_symbols,
2262   NULL, /* parse_args */
2263   gld${EMULATION_NAME}_add_options,
2264   gld${EMULATION_NAME}_handle_option,
2265   gld_${EMULATION_NAME}_unrecognized_file,
2266   gld_${EMULATION_NAME}_list_options,
2267   gld_${EMULATION_NAME}_recognized_file,
2268   gld_${EMULATION_NAME}_find_potential_libraries,
2269   NULL, /* new_vers_pattern.  */
2270   NULL  /* extra_map_file_text */
2271 };
2272 EOF