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${EMULATION_NAME}.c # there, now line numbers match ;-)
  20 fragment <<EOF
  21 /* Copyright (C) 2006-2016 Free Software Foundation, Inc.
  22    Written by Kai Tietz, OneVision Software GmbH&CoKg.
  23
  24    This file is part of the GNU Binutils.
  25
  26    This program is free software; you can redistribute it and/or modify
  27    it under the terms of the GNU General Public License as published by
  28    the Free Software Foundation; either version 3 of the License, or
  29    (at your option) any later version.
  30
  31    This program is distributed in the hope that it will be useful,
  32    but WITHOUT ANY WARRANTY; without even the implied warranty of
  33    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34    GNU General Public License for more details.
  35
  36    You should have received a copy of the GNU General Public License
  37    along with this program; if not, write to the Free Software
  38    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  39    MA 02110-1301, USA.  */
  40
  41
  42 /* For WINDOWS_XP64 and higher */
  43 /* Based on pe.em, but modified for 64 bit support.  */
  44
  45 #define TARGET_IS_${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 == FALSE || (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)
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_vma) ((bfd_signed_vma) ((char) bfd_get_8 (s->owner, addend)));
1096         else if (suc)
1097           _addend = ((bfd_vma) bfd_get_8 (s->owner, addend)) & 0xff;
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_vma) ((bfd_signed_vma) ((short) bfd_get_16 (s->owner, addend)));
1103         else if (suc)
1104           _addend = ((bfd_vma) bfd_get_16 (s->owner, addend)) & 0xffff;
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_vma) ((bfd_signed_vma) ((int) bfd_get_32 (s->owner, addend)));
1110         else if (suc)
1111           _addend = ((bfd_vma) bfd_get_32 (s->owner, addend)) & 0xffffffff;
1112         break;
1113       case 64:
1114         suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
1115         if (suc)
1116           _addend = ((bfd_vma) 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", (long) _addend, (long) rel->addend, (long) rel->address);
1126       if (rel->howto->pc_relative) printf (" pcrel");
1127       printf (" %d bit rel.\n",(int) rel->howto->bitsize);
1128   }
1129   pep_create_import_fixup (rel, s, _addend);
1130
1131   return 1;
1132 }
1133
1134 static void
1135 pep_find_data_imports (void)
1136 {
1137   struct bfd_link_hash_entry *undef, *sym;
1138
1139   if (link_info.pei386_auto_import == 0)
1140     return;
1141
1142   for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1143     {
1144       if (undef->type == bfd_link_hash_undefined)
1145         {
1146           /* C++ symbols are *long*.  */
1147 #define BUF_SIZE 4096
1148           char buf[BUF_SIZE];
1149
1150           if (pep_dll_extra_pe_debug)
1151             printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1152
1153           if (strlen (undef->root.string) > (BUF_SIZE - 6))
1154             {
1155               /* PR linker/18466.  */
1156               einfo (_("%P: internal error: symbol too long: %s\n"),
1157                      undef->root.string);
1158               return;
1159             }
1160
1161           sprintf (buf, "__imp_%s", undef->root.string);
1162
1163           sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1164
1165           if (sym && sym->type == bfd_link_hash_defined)
1166             {
1167               bfd *b = sym->u.def.section->owner;
1168               asymbol **symbols;
1169               int nsyms, i;
1170
1171               if (!bfd_generic_link_read_symbols (b))
1172                 {
1173                   einfo (_("%B%F: could not read symbols: %E\n"), b);
1174                   return;
1175                 }
1176
1177               symbols = bfd_get_outsymbols (b);
1178               nsyms = bfd_get_symcount (b);
1179
1180               for (i = 0; i < nsyms; i++)
1181                 {
1182                   if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1183                     continue;
1184
1185                   if (pep_dll_extra_pe_debug)
1186                     printf ("->%s\n", symbols[i]->name);
1187
1188                   pep_data_import_dll = (char*) (symbols[i]->name +
1189                                                  U_SIZE ("_head_") - 1);
1190                   break;
1191                 }
1192
1193               pep_walk_relocs_of_symbol (&link_info, undef->root.string,
1194                                          make_import_fixup);
1195
1196               /* Let's differentiate it somehow from defined.  */
1197               undef->type = bfd_link_hash_defweak;
1198               /* We replace original name with __imp_ prefixed, this
1199                  1) may trash memory 2) leads to duplicate symbol generation.
1200                  Still, IMHO it's better than having name poluted.  */
1201               undef->root.string = sym->root.string;
1202               undef->u.def.value = sym->u.def.value;
1203               undef->u.def.section = sym->u.def.section;
1204             }
1205         }
1206     }
1207 }
1208
1209 static bfd_boolean
1210 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1211 {
1212   printf ("+%s\n", h->string);
1213
1214   return TRUE;
1215 }
1216 #endif /* DLL_SUPPORT */
1217
1218 static void
1219 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1220 {
1221   int *found = (int *) obj;
1222
1223   if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1224     *found = 1;
1225 }
1226
1227 static bfd_boolean
1228 pecoff_checksum_contents (bfd *abfd,
1229                           void (*process) (const void *, size_t, void *),
1230                           void *arg)
1231 {
1232   file_ptr filepos = (file_ptr) 0;
1233
1234   while (1)
1235     {
1236       unsigned char b;
1237       int status;
1238
1239       if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1240         return 0;
1241
1242       status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1243       if (status < 1)
1244         {
1245           break;
1246         }
1247
1248       (*process) (&b, 1, arg);
1249       filepos += 1;
1250     }
1251
1252   return TRUE;
1253 }
1254
1255 static bfd_boolean
1256 write_build_id (bfd *abfd)
1257 {
1258   struct pe_tdata *t = pe_data (abfd);
1259   asection *asec;
1260   struct bfd_link_order *link_order = NULL;
1261   unsigned char *contents;
1262   bfd_size_type size;
1263   bfd_size_type build_id_size;
1264   unsigned char *build_id;
1265
1266   /* Find the section the .buildid output section has been merged info.  */
1267   for (asec = abfd->sections; asec != NULL; asec = asec->next)
1268     {
1269       struct bfd_link_order *l = NULL;
1270       for (l = asec->map_head.link_order; l != NULL; l = l->next)
1271         {
1272           if (l->type == bfd_indirect_link_order)
1273             {
1274               if (l->u.indirect.section == t->build_id.sec)
1275                 {
1276                   link_order = l;
1277                   break;
1278                 }
1279             }
1280         }
1281
1282       if (link_order)
1283         break;
1284     }
1285
1286   if (!link_order)
1287     {
1288       einfo (_("%P: warning: .buildid section discarded,"
1289                " --build-id ignored.\n"));
1290       return TRUE;
1291     }
1292
1293   if (t->build_id.sec->contents == NULL)
1294     t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1295   contents = t->build_id.sec->contents;
1296   size = t->build_id.sec->size;
1297
1298   build_id_size = compute_build_id_size (t->build_id.style);
1299   build_id = xmalloc (build_id_size);
1300   generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1301
1302   bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1303
1304   /* Construct a debug directory entry which points to an immediately following CodeView record.  */
1305   struct internal_IMAGE_DEBUG_DIRECTORY idd;
1306   idd.Characteristics = 0;
1307   idd.TimeDateStamp = 0;
1308   idd.MajorVersion = 0;
1309   idd.MinorVersion = 0;
1310   idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1311   idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1312   idd.AddressOfRawData = asec->vma - ib + link_order->offset
1313     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1314   idd.PointerToRawData = asec->filepos + link_order->offset
1315     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1316
1317   struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1318   _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1319
1320   /* Write the debug directory enttry */
1321   if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1322     return 0;
1323
1324   if (bfd_bwrite (contents, size, abfd) != size)
1325     return 0;
1326
1327   /* Construct the CodeView record.  */
1328   CODEVIEW_INFO cvinfo;
1329   cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1330   cvinfo.Age = 1;
1331
1332   /* Zero pad or truncate the generated build_id to fit in the CodeView record.  */
1333   memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1334   memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1335           ? CV_INFO_SIGNATURE_LENGTH :  build_id_size);
1336
1337   free (build_id);
1338
1339   /* Write the codeview record.  */
1340   if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1341     return 0;
1342
1343   /* Record the location of the debug directory in the data directory.  */
1344   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1345     = asec->vma  - ib + link_order->offset;
1346   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1347     = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1348
1349   return TRUE;
1350 }
1351
1352 /* Make .buildid section, and set up coff_tdata->build_id. */
1353 static bfd_boolean
1354 setup_build_id (bfd *ibfd)
1355 {
1356   asection *s;
1357   flagword flags;
1358
1359   if (!validate_build_id_style (emit_build_id))
1360     {
1361       einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1362       return FALSE;
1363     }
1364
1365   flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1366            | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1367   s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1368   if (s != NULL)
1369     {
1370       struct pe_tdata *t = pe_data (link_info.output_bfd);
1371       t->build_id.after_write_object_contents = &write_build_id;
1372       t->build_id.style = emit_build_id;
1373       t->build_id.sec = s;
1374
1375       /* Section is a fixed size:
1376          One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1377          pointing at a CV_INFO_PDB70 record containing the build-id, with a
1378          null byte for PdbFileName.  */
1379       s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1380         + sizeof (CV_INFO_PDB70) + 1;
1381
1382       return TRUE;
1383     }
1384
1385   einfo ("%P: warning: Cannot create .buildid section,"
1386          " --build-id ignored.\n");
1387   return FALSE;
1388 }
1389
1390 static void
1391 gld_${EMULATION_NAME}_after_open (void)
1392 {
1393   after_open_default ();
1394
1395   is_underscoring ();
1396 #ifdef DLL_SUPPORT
1397   if (pep_dll_extra_pe_debug)
1398     {
1399       bfd *a;
1400       struct bfd_link_hash_entry *sym;
1401
1402       printf ("%s()\n", __FUNCTION__);
1403
1404       for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1405         printf ("-%s\n", sym->root.string);
1406       bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1407
1408       for (a = link_info.input_bfds; a; a = a->link.next)
1409         printf ("*%s\n",a->filename);
1410     }
1411 #endif
1412
1413   if (emit_build_id != NULL)
1414     {
1415       bfd *abfd;
1416
1417       /* Find a COFF input.  */
1418       for (abfd = link_info.input_bfds;
1419            abfd != (bfd *) NULL; abfd = abfd->link.next)
1420         if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1421           break;
1422
1423       /* If there are no COFF input files do not try to
1424          add a build-id section.  */
1425       if (abfd == NULL
1426           || !setup_build_id (abfd))
1427         {
1428           free ((char *) emit_build_id);
1429           emit_build_id = NULL;
1430         }
1431     }
1432
1433   /* Pass the wacky PE command line options into the output bfd.
1434      FIXME: This should be done via a function, rather than by
1435      including an internal BFD header.  */
1436
1437   if (coff_data (link_info.output_bfd) == NULL
1438       || coff_data (link_info.output_bfd)->pe == 0)
1439     einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1440            link_info.output_bfd);
1441
1442   pe_data (link_info.output_bfd)->pe_opthdr = pep;
1443   pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1444   pe_data (link_info.output_bfd)->real_flags |= real_flags;
1445   pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1446
1447   /* At this point we must decide whether to use long section names
1448      in the output or not.  If the user hasn't explicitly specified
1449      on the command line, we leave it to the default for the format
1450      (object files yes, image files no), except if there is debug
1451      information present; GDB relies on the long section names to
1452      find it, so enable it in that case.  */
1453   if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1454     {
1455       if (bfd_link_relocatable (&link_info))
1456         pep_use_coff_long_section_names = 1;
1457       else
1458         {
1459           /* Iterate over all sections of all input BFDs, checking
1460              for any that begin 'debug_' and are long names.  */
1461           LANG_FOR_EACH_INPUT_STATEMENT (is)
1462           {
1463             int found_debug = 0;
1464
1465             bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1466             if (found_debug)
1467               {
1468                 pep_use_coff_long_section_names = 1;
1469                 break;
1470               }
1471           }
1472         }
1473     }
1474
1475   pep_output_file_set_long_section_names (link_info.output_bfd);
1476
1477 #ifdef DLL_SUPPORT
1478   if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
1479     pep_fixup_stdcalls ();
1480
1481   pep_process_import_defs (link_info.output_bfd, &link_info);
1482
1483   pep_find_data_imports ();
1484
1485   /* As possibly new symbols are added by imports, we rerun
1486      stdcall/fastcall fixup here.  */
1487   if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
1488     pep_fixup_stdcalls ();
1489
1490 #ifndef TARGET_IS_i386pep
1491   if (bfd_link_pic (&link_info))
1492 #else
1493   if (!bfd_link_relocatable (&link_info))
1494 #endif
1495     pep_dll_build_sections (link_info.output_bfd, &link_info);
1496
1497 #ifndef TARGET_IS_i386pep
1498   else
1499     pep_exe_build_sections (link_info.output_bfd, &link_info);
1500 #endif
1501 #endif /* DLL_SUPPORT */
1502
1503   {
1504     /* This next chunk of code tries to detect the case where you have
1505        two import libraries for the same DLL (specifically,
1506        symbolically linking libm.a and libc.a in cygwin to
1507        libcygwin.a).  In those cases, it's possible for function
1508        thunks from the second implib to be used but without the
1509        head/tail objects, causing an improper import table.  We detect
1510        those cases and rename the "other" import libraries to match
1511        the one the head/tail come from, so that the linker will sort
1512        things nicely and produce a valid import table.  */
1513
1514     LANG_FOR_EACH_INPUT_STATEMENT (is)
1515       {
1516         if (is->the_bfd->my_archive)
1517           {
1518             int idata2 = 0, reloc_count=0, is_imp = 0;
1519             asection *sec;
1520
1521             /* See if this is an import library thunk.  */
1522             for (sec = is->the_bfd->sections; sec; sec = sec->next)
1523               {
1524                 if (strcmp (sec->name, ".idata\$2") == 0)
1525                   idata2 = 1;
1526                 if (CONST_STRNEQ (sec->name, ".idata\$"))
1527                   is_imp = 1;
1528                 reloc_count += sec->reloc_count;
1529               }
1530
1531             if (is_imp && !idata2 && reloc_count)
1532               {
1533                 /* It is, look for the reference to head and see if it's
1534                    from our own library.  */
1535                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1536                   {
1537                     int i;
1538                     long relsize;
1539                     asymbol **symbols;
1540                     arelent **relocs;
1541                     int nrelocs;
1542
1543                     relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1544                     if (relsize < 1)
1545                       break;
1546
1547                     if (!bfd_generic_link_read_symbols (is->the_bfd))
1548                       {
1549                         einfo (_("%B%F: could not read symbols: %E\n"),
1550                                is->the_bfd);
1551                         return;
1552                       }
1553                     symbols = bfd_get_outsymbols (is->the_bfd);
1554
1555                     relocs = xmalloc ((size_t) relsize);
1556                     nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1557                                                       relocs, symbols);
1558                     if (nrelocs < 0)
1559                       {
1560                         free (relocs);
1561                         einfo ("%X%P: unable to process relocs: %E\n");
1562                         return;
1563                       }
1564
1565                     for (i = 0; i < nrelocs; i++)
1566                       {
1567                         struct bfd_symbol *s;
1568                         struct bfd_link_hash_entry * blhe;
1569                         char *other_bfd_filename;
1570                         char *n;
1571
1572                         s = (relocs[i]->sym_ptr_ptr)[0];
1573
1574                         if (s->flags & BSF_LOCAL)
1575                           continue;
1576
1577                         /* Thunk section with reloc to another bfd.  */
1578                         blhe = bfd_link_hash_lookup (link_info.hash,
1579                                                      s->name,
1580                                                      FALSE, FALSE, TRUE);
1581
1582                         if (blhe == NULL
1583                             || blhe->type != bfd_link_hash_defined)
1584                           continue;
1585
1586                         other_bfd_filename
1587                           = blhe->u.def.section->owner->my_archive
1588                             ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1589                             : bfd_get_filename (blhe->u.def.section->owner);
1590
1591                         if (filename_cmp (bfd_get_filename
1592                                             (is->the_bfd->my_archive),
1593                                           other_bfd_filename) == 0)
1594                           continue;
1595
1596                         /* Rename this implib to match the other one.  */
1597                         n = xmalloc (strlen (other_bfd_filename) + 1);
1598                         strcpy (n, other_bfd_filename);
1599                         is->the_bfd->my_archive->filename = n;
1600                       }
1601
1602                     free (relocs);
1603                     /* Note - we do not free the symbols,
1604                        they are now cached in the BFD.  */
1605                   }
1606               }
1607           }
1608       }
1609   }
1610
1611   {
1612     int is_ms_arch = 0;
1613     bfd *cur_arch = 0;
1614     lang_input_statement_type *is2;
1615     lang_input_statement_type *is3;
1616
1617     /* Careful - this is a shell script.  Watch those dollar signs! */
1618     /* Microsoft import libraries have every member named the same,
1619        and not in the right order for us to link them correctly.  We
1620        must detect these and rename the members so that they'll link
1621        correctly.  There are three types of objects: the head, the
1622        thunks, and the sentinel(s).  The head is easy; it's the one
1623        with idata2.  We assume that the sentinels won't have relocs,
1624        and the thunks will.  It's easier than checking the symbol
1625        table for external references.  */
1626     LANG_FOR_EACH_INPUT_STATEMENT (is)
1627       {
1628         if (is->the_bfd->my_archive)
1629           {
1630             char *pnt;
1631             bfd *arch = is->the_bfd->my_archive;
1632
1633             if (cur_arch != arch)
1634               {
1635                 cur_arch = arch;
1636                 is_ms_arch = 1;
1637
1638                 for (is3 = is;
1639                      is3 && is3->the_bfd->my_archive == arch;
1640                      is3 = (lang_input_statement_type *) is3->next)
1641                   {
1642                     /* A MS dynamic import library can also contain static
1643                        members, so look for the first element with a .dll
1644                        extension, and use that for the remainder of the
1645                        comparisons.  */
1646                     pnt = strrchr (is3->the_bfd->filename, '.');
1647                     if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1648                       break;
1649                   }
1650
1651                 if (is3 == NULL)
1652                   is_ms_arch = 0;
1653                 else
1654                   {
1655                     /* OK, found one.  Now look to see if the remaining
1656                        (dynamic import) members use the same name.  */
1657                     for (is2 = is;
1658                          is2 && is2->the_bfd->my_archive == arch;
1659                          is2 = (lang_input_statement_type *) is2->next)
1660                       {
1661                         /* Skip static members, ie anything with a .obj
1662                            extension.  */
1663                         pnt = strrchr (is2->the_bfd->filename, '.');
1664                         if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1665                           continue;
1666
1667                         if (filename_cmp (is3->the_bfd->filename,
1668                                           is2->the_bfd->filename))
1669                           {
1670                             is_ms_arch = 0;
1671                             break;
1672                           }
1673                       }
1674                   }
1675               }
1676
1677             /* This fragment might have come from an .obj file in a Microsoft
1678                import, and not an actual import record. If this is the case,
1679                then leave the filename alone.  */
1680             pnt = strrchr (is->the_bfd->filename, '.');
1681
1682             if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1683               {
1684                 int idata2 = 0, reloc_count=0;
1685                 asection *sec;
1686                 char *new_name, seq;
1687
1688                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1689                   {
1690                     if (strcmp (sec->name, ".idata\$2") == 0)
1691                       idata2 = 1;
1692                     reloc_count += sec->reloc_count;
1693                   }
1694
1695                 if (idata2) /* .idata2 is the TOC */
1696                   seq = 'a';
1697                 else if (reloc_count > 0) /* thunks */
1698                   seq = 'b';
1699                 else /* sentinel */
1700                   seq = 'c';
1701
1702                 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1703                 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1704                 is->the_bfd->filename = new_name;
1705
1706                 new_name = xmalloc (strlen (is->filename) + 3);
1707                 sprintf (new_name, "%s.%c", is->filename, seq);
1708                 is->filename = new_name;
1709               }
1710           }
1711       }
1712   }
1713 }
1714 \f
1715 static void
1716 gld_${EMULATION_NAME}_before_allocation (void)
1717 {
1718   is_underscoring ();
1719   before_allocation_default ();
1720 }
1721 \f
1722 #ifdef DLL_SUPPORT
1723 /* This is called when an input file isn't recognized as a BFD.  We
1724    check here for .DEF files and pull them in automatically.  */
1725
1726 static int
1727 saw_option (char *option)
1728 {
1729   int i;
1730
1731   is_underscoring ();
1732
1733   for (i = 0; init[i].ptr; i++)
1734     if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1735       return init[i].inited;
1736   return 0;
1737 }
1738 #endif /* DLL_SUPPORT */
1739
1740 static bfd_boolean
1741 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1742 {
1743 #ifdef DLL_SUPPORT
1744   const char *ext = entry->filename + strlen (entry->filename) - 4;
1745
1746   if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1747     {
1748       pep_def_file = def_file_parse (entry->filename, pep_def_file);
1749
1750       if (pep_def_file)
1751         {
1752           int i, buflen=0, len;
1753           char *buf;
1754
1755           for (i = 0; i < pep_def_file->num_exports; i++)
1756             {
1757               len = strlen (pep_def_file->exports[i].internal_name);
1758               if (buflen < len + 2)
1759                 buflen = len + 2;
1760             }
1761
1762           buf = xmalloc (buflen);
1763
1764           for (i = 0; i < pep_def_file->num_exports; i++)
1765             {
1766               struct bfd_link_hash_entry *h;
1767
1768               sprintf (buf, "%s%s", U (""),
1769                        pep_def_file->exports[i].internal_name);
1770
1771               h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1772               if (h == (struct bfd_link_hash_entry *) NULL)
1773                 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1774               if (h->type == bfd_link_hash_new)
1775                 {
1776                   h->type = bfd_link_hash_undefined;
1777                   h->u.undef.abfd = NULL;
1778                   bfd_link_add_undef (link_info.hash, h);
1779                 }
1780             }
1781           free (buf);
1782
1783           /* def_file_print (stdout, pep_def_file); */
1784           if (pep_def_file->is_dll == 1)
1785             link_info.type = type_dll;
1786
1787           if (pep_def_file->base_address != (bfd_vma)(-1))
1788             {
1789               pep.ImageBase
1790                 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1791                 = init[IMAGEBASEOFF].value
1792                 = pep_def_file->base_address;
1793               init[IMAGEBASEOFF].inited = 1;
1794               if (image_base_statement)
1795                 image_base_statement->exp
1796                   = exp_assign ("__image_base__", exp_intop (pep.ImageBase),
1797                                 FALSE);
1798             }
1799
1800           if (pep_def_file->stack_reserve != -1
1801               && ! saw_option ("__size_of_stack_reserve__"))
1802             {
1803               pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1804               if (pep_def_file->stack_commit != -1)
1805                 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1806             }
1807           if (pep_def_file->heap_reserve != -1
1808               && ! saw_option ("__size_of_heap_reserve__"))
1809             {
1810               pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1811               if (pep_def_file->heap_commit != -1)
1812                 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1813             }
1814           return TRUE;
1815         }
1816     }
1817 #endif
1818   return FALSE;
1819 }
1820
1821 static bfd_boolean
1822 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1823 {
1824   is_underscoring ();
1825 #ifdef DLL_SUPPORT
1826 #ifdef TARGET_IS_i386pep
1827   pep_dll_id_target ("pei-x86-64");
1828 #endif
1829   if (pep_bfd_is_dll (entry->the_bfd))
1830     return pep_implied_import_dll (entry->filename);
1831 #endif
1832   return FALSE;
1833 }
1834
1835 static void
1836 gld_${EMULATION_NAME}_finish (void)
1837 {
1838   is_underscoring ();
1839   finish_default ();
1840
1841 #ifdef DLL_SUPPORT
1842   if (bfd_link_pic (&link_info)
1843       || (!bfd_link_relocatable (&link_info)
1844           && pep_def_file->num_exports != 0))
1845     {
1846       pep_dll_fill_sections (link_info.output_bfd, &link_info);
1847       if (command_line.out_implib_filename)
1848         pep_dll_generate_implib (pep_def_file,
1849                                  command_line.out_implib_filename, &link_info);
1850     }
1851
1852   if (pep_out_def_filename)
1853     pep_dll_generate_def_file (pep_out_def_filename);
1854 #endif /* DLL_SUPPORT */
1855
1856   /* I don't know where .idata gets set as code, but it shouldn't be.  */
1857   {
1858     asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1859
1860     if (asec)
1861       {
1862         asec->flags &= ~SEC_CODE;
1863         asec->flags |= SEC_DATA;
1864       }
1865   }
1866 }
1867
1868 \f
1869 /* Place an orphan section.
1870
1871    We use this to put sections in a reasonable place in the file, and
1872    to ensure that they are aligned as required.
1873
1874    We handle grouped sections here as well.  A section named .foo\$nn
1875    goes into the output section .foo.  All grouped sections are sorted
1876    by name.
1877
1878    Grouped sections for the default sections are handled by the
1879    default linker script using wildcards, and are sorted by
1880    sort_sections.  */
1881
1882 static lang_output_section_statement_type *
1883 gld_${EMULATION_NAME}_place_orphan (asection *s,
1884                                     const char *secname,
1885                                     int constraint)
1886 {
1887   const char *orig_secname = secname;
1888   char *dollar = NULL;
1889   lang_output_section_statement_type *os;
1890   lang_statement_list_type add_child;
1891   lang_output_section_statement_type *match_by_name = NULL;
1892   lang_statement_union_type **pl;
1893
1894   /* Look through the script to see where to place this section.  */
1895   if (!bfd_link_relocatable (&link_info)
1896       && (dollar = strchr (secname, '\$')) != NULL)
1897     {
1898       size_t len = dollar - secname;
1899       char *newname = xmalloc (len + 1);
1900       memcpy (newname, secname, len);
1901       newname[len] = '\0';
1902       secname = newname;
1903     }
1904
1905   lang_list_init (&add_child);
1906
1907   os = NULL;
1908   if (constraint == 0)
1909     for (os = lang_output_section_find (secname);
1910          os != NULL;
1911          os = next_matching_output_section_statement (os, 0))
1912       {
1913         /* If we don't match an existing output section, tell
1914            lang_insert_orphan to create a new output section.  */
1915         constraint = SPECIAL;
1916
1917         if (os->bfd_section != NULL
1918             && (os->bfd_section->flags == 0
1919                 || ((s->flags ^ os->bfd_section->flags)
1920                     & (SEC_LOAD | SEC_ALLOC)) == 0))
1921           {
1922             /* We already have an output section statement with this
1923                name, and its bfd section has compatible flags.
1924                If the section already exists but does not have any flags set,
1925                then it has been created by the linker, probably as a result of
1926                a --section-start command line switch.  */
1927             lang_add_section (&add_child, s, NULL, os);
1928             break;
1929           }
1930
1931         /* Save unused output sections in case we can match them
1932            against orphans later.  */
1933         if (os->bfd_section == NULL)
1934           match_by_name = os;
1935       }
1936
1937   /* If we didn't match an active output section, see if we matched an
1938      unused one and use that.  */
1939   if (os == NULL && match_by_name)
1940     {
1941       lang_add_section (&match_by_name->children, s, NULL, match_by_name);
1942       return match_by_name;
1943     }
1944
1945   if (os == NULL)
1946     {
1947       static struct orphan_save hold[] =
1948         {
1949           { ".text",
1950             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1951             0, 0, 0, 0 },
1952           { ".idata",
1953             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1954             0, 0, 0, 0 },
1955           { ".rdata",
1956             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1957             0, 0, 0, 0 },
1958           { ".data",
1959             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1960             0, 0, 0, 0 },
1961           { ".bss",
1962             SEC_ALLOC,
1963             0, 0, 0, 0 }
1964         };
1965       enum orphan_save_index
1966         {
1967           orphan_text = 0,
1968           orphan_idata,
1969           orphan_rodata,
1970           orphan_data,
1971           orphan_bss
1972         };
1973       static int orphan_init_done = 0;
1974       struct orphan_save *place;
1975       lang_output_section_statement_type *after;
1976       etree_type *address;
1977       flagword flags;
1978       asection *nexts;
1979
1980       if (!orphan_init_done)
1981         {
1982           struct orphan_save *ho;
1983           for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1984             if (ho->name != NULL)
1985               {
1986                 ho->os = lang_output_section_find (ho->name);
1987                 if (ho->os != NULL && ho->os->flags == 0)
1988                   ho->os->flags = ho->flags;
1989               }
1990           orphan_init_done = 1;
1991         }
1992
1993       flags = s->flags;
1994       if (!bfd_link_relocatable (&link_info))
1995         {
1996           nexts = s;
1997           while ((nexts = bfd_get_next_section_by_name (nexts->owner,
1998                                                         nexts)))
1999             if (nexts->output_section == NULL
2000                 && (nexts->flags & SEC_EXCLUDE) == 0
2001                 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2002                 && (nexts->owner->flags & DYNAMIC) == 0
2003                 && nexts->owner->usrdata != NULL
2004                 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2005                      ->flags.just_syms))
2006               flags = (((flags ^ SEC_READONLY)
2007                         | (nexts->flags ^ SEC_READONLY))
2008                        ^ SEC_READONLY);
2009         }
2010
2011       /* Try to put the new output section in a reasonable place based
2012          on the section name and section flags.  */
2013
2014       place = NULL;
2015       if ((flags & SEC_ALLOC) == 0)
2016         ;
2017       else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2018         place = &hold[orphan_bss];
2019       else if ((flags & SEC_READONLY) == 0)
2020         place = &hold[orphan_data];
2021       else if ((flags & SEC_CODE) == 0)
2022         {
2023           place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2024                                                      : &hold[orphan_rodata]);
2025         }
2026       else
2027         place = &hold[orphan_text];
2028
2029       after = NULL;
2030       if (place != NULL)
2031         {
2032           if (place->os == NULL)
2033             place->os = lang_output_section_find (place->name);
2034           after = place->os;
2035           if (after == NULL)
2036             after = lang_output_section_find_by_flags (s, flags, &place->os,
2037                                                        NULL);
2038           if (after == NULL)
2039             /* *ABS* is always the first output section statement.  */
2040             after = (&lang_output_section_statement.head
2041                      ->output_section_statement);
2042         }
2043
2044       /* All sections in an executable must be aligned to a page boundary.
2045          In a relocatable link, just preserve the incoming alignment; the
2046          address is discarded by lang_insert_orphan in that case, anyway.  */
2047       address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2048       os = lang_insert_orphan (s, secname, constraint, after, place, address,
2049                                &add_child);
2050       if (bfd_link_relocatable (&link_info))
2051         {
2052           os->section_alignment = s->alignment_power;
2053           os->bfd_section->alignment_power = s->alignment_power;
2054         }
2055     }
2056
2057   /* If the section name has a '\$', sort it with the other '\$'
2058      sections.  */
2059   for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2060     {
2061       lang_input_section_type *ls;
2062       const char *lname;
2063
2064       if ((*pl)->header.type != lang_input_section_enum)
2065         continue;
2066
2067       ls = &(*pl)->input_section;
2068
2069       lname = bfd_get_section_name (ls->section->owner, ls->section);
2070       if (strchr (lname, '\$') != NULL
2071           && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2072         break;
2073     }
2074
2075   if (add_child.head != NULL)
2076     {
2077       *add_child.tail = *pl;
2078       *pl = add_child.head;
2079     }
2080
2081   return os;
2082 }
2083
2084 static bfd_boolean
2085 gld_${EMULATION_NAME}_open_dynamic_archive
2086   (const char *arch ATTRIBUTE_UNUSED,
2087    search_dirs_type *search,
2088    lang_input_statement_type *entry)
2089 {
2090   static const struct
2091     {
2092       const char * format;
2093       bfd_boolean use_prefix;
2094     }
2095   libname_fmt [] =
2096     {
2097       /* Preferred explicit import library for dll's.  */
2098       { "lib%s.dll.a", FALSE },
2099       /* Alternate explicit import library for dll's.  */
2100       { "%s.dll.a", FALSE },
2101       /* "libfoo.a" could be either an import lib or a static lib.
2102           For backwards compatibility, libfoo.a needs to precede
2103           libfoo.dll and foo.dll in the search.  */
2104       { "lib%s.a", FALSE },
2105       /* The 'native' spelling of an import lib name is "foo.lib".  */
2106       { "%s.lib", FALSE },
2107 #ifdef DLL_SUPPORT
2108       /* Try "<prefix>foo.dll" (preferred dll name, if specified).  */
2109       { "%s%s.dll", TRUE },
2110 #endif
2111       /* Try "libfoo.dll" (default preferred dll name).  */
2112       { "lib%s.dll", FALSE },
2113       /* Finally try 'native' dll name "foo.dll".  */
2114       {  "%s.dll", FALSE },
2115       /* Note: If adding more formats to this table, make sure to check to
2116          see if their length is longer than libname_fmt[0].format, and if
2117          so, update the call to xmalloc() below.  */
2118       { NULL, FALSE }
2119     };
2120   static unsigned int format_max_len = 0;
2121   const char * filename;
2122   char * full_string;
2123   char * base_string;
2124   unsigned int i;
2125
2126
2127   if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2128     return FALSE;
2129
2130   filename = entry->filename;
2131
2132   if (format_max_len == 0)
2133     /* We need to allow space in the memory that we are going to allocate
2134        for the characters in the format string.  Since the format array is
2135        static we only need to calculate this information once.  In theory
2136        this value could also be computed statically, but this introduces
2137        the possibility for a discrepancy and hence a possible memory
2138        corruption.  The lengths we compute here will be too long because
2139        they will include any formating characters (%s) in the strings, but
2140        this will not matter.  */
2141     for (i = 0; libname_fmt[i].format; i++)
2142       if (format_max_len < strlen (libname_fmt[i].format))
2143         format_max_len = strlen (libname_fmt[i].format);
2144
2145   full_string = xmalloc (strlen (search->name)
2146                          + strlen (filename)
2147                          + format_max_len
2148 #ifdef DLL_SUPPORT
2149                          + (pep_dll_search_prefix
2150                             ? strlen (pep_dll_search_prefix) : 0)
2151 #endif
2152                          /* Allow for the terminating NUL and for the path
2153                             separator character that is inserted between
2154                             search->name and the start of the format string.  */
2155                          + 2);
2156
2157   sprintf (full_string, "%s/", search->name);
2158   base_string = full_string + strlen (full_string);
2159
2160   for (i = 0; libname_fmt[i].format; i++)
2161     {
2162 #ifdef DLL_SUPPORT
2163       if (libname_fmt[i].use_prefix)
2164         {
2165           if (!pep_dll_search_prefix)
2166             continue;
2167           sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
2168         }
2169       else
2170 #endif
2171         sprintf (base_string, libname_fmt[i].format, filename);
2172
2173       if (ldfile_try_open_bfd (full_string, entry))
2174         break;
2175     }
2176
2177   if (!libname_fmt[i].format)
2178     {
2179       free (full_string);
2180       return FALSE;
2181     }
2182
2183   entry->filename = full_string;
2184
2185   return TRUE;
2186 }
2187
2188 static int
2189 gld_${EMULATION_NAME}_find_potential_libraries
2190   (char *name, lang_input_statement_type *entry)
2191 {
2192   return ldfile_open_file_search (name, entry, "", ".lib");
2193 }
2194 \f
2195 static char *
2196 gld_${EMULATION_NAME}_get_script (int *isfile)
2197 EOF
2198 # Scripts compiled in.
2199 # sed commands to quote an ld script as a C string.
2200 sc="-f stringify.sed"
2201
2202 fragment <<EOF
2203 {
2204   *isfile = 0;
2205
2206   if (bfd_link_relocatable (&link_info) && config.build_constructors)
2207     return
2208 EOF
2209 sed $sc ldscripts/${EMULATION_NAME}.xu                  >> e${EMULATION_NAME}.c
2210 echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2211 sed $sc ldscripts/${EMULATION_NAME}.xr                  >> e${EMULATION_NAME}.c
2212 echo '  ; else if (!config.text_read_only) return'      >> e${EMULATION_NAME}.c
2213 sed $sc ldscripts/${EMULATION_NAME}.xbn                 >> e${EMULATION_NAME}.c
2214 echo '  ; else if (!config.magic_demand_paged) return'  >> e${EMULATION_NAME}.c
2215 sed $sc ldscripts/${EMULATION_NAME}.xn                  >> e${EMULATION_NAME}.c
2216 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2217 echo '  ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return'     >> e${EMULATION_NAME}.c
2218 sed $sc ldscripts/${EMULATION_NAME}.xa                  >> e${EMULATION_NAME}.c
2219 fi
2220 echo '  ; else return'                                  >> e${EMULATION_NAME}.c
2221 sed $sc ldscripts/${EMULATION_NAME}.x                   >> e${EMULATION_NAME}.c
2222 echo '; }'                                              >> e${EMULATION_NAME}.c
2223
2224 fragment <<EOF
2225
2226
2227 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2228 {
2229   gld_${EMULATION_NAME}_before_parse,
2230   syslib_default,
2231   hll_default,
2232   gld_${EMULATION_NAME}_after_parse,
2233   gld_${EMULATION_NAME}_after_open,
2234   after_allocation_default,
2235   set_output_arch_default,
2236   ldemul_default_target,
2237   gld_${EMULATION_NAME}_before_allocation,
2238   gld_${EMULATION_NAME}_get_script,
2239   "${EMULATION_NAME}",
2240   "${OUTPUT_FORMAT}",
2241   gld_${EMULATION_NAME}_finish,
2242   NULL, /* Create output section statements.  */
2243   gld_${EMULATION_NAME}_open_dynamic_archive,
2244   gld_${EMULATION_NAME}_place_orphan,
2245   gld_${EMULATION_NAME}_set_symbols,
2246   NULL, /* parse_args */
2247   gld${EMULATION_NAME}_add_options,
2248   gld${EMULATION_NAME}_handle_option,
2249   gld_${EMULATION_NAME}_unrecognized_file,
2250   gld_${EMULATION_NAME}_list_options,
2251   gld_${EMULATION_NAME}_recognized_file,
2252   gld_${EMULATION_NAME}_find_potential_libraries,
2253   NULL, /* new_vers_pattern.  */
2254   NULL  /* extra_map_file_text */
2255 };
2256 EOF