path: root/ld/emultempl/pep.em

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
if [ -z "$MACHINE" ]; then
  OUTPUT_ARCH=${ARCH}
else
  OUTPUT_ARCH=${ARCH}:${MACHINE}
fi
rm -f e${EMULATION_NAME}.c
(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
fragment <<EOF
/* Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   Written by Kai Tietz, OneVision Software GmbH&CoKg.

   This file is part of the GNU Binutils.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */


/* For WINDOWS_XP64 and higher */
/* Based on pe.em, but modified for 64 bit support.  */

#define TARGET_IS_${EMULATION_NAME}

#define COFF_IMAGE_WITH_PE
#define COFF_WITH_PE
#define COFF_WITH_pex64

#include "sysdep.h"
#include "bfd.h"
#include "bfdlink.h"
#include "getopt.h"
#include "libiberty.h"
#include "ld.h"
#include "ldmain.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldemul.h"
#include <ldgram.h>
#include "ldlex.h"
#include "ldmisc.h"
#include "ldctor.h"
#include "coff/internal.h"

/* FIXME: See bfd/peXXigen.c for why we include an architecture specific
   header in generic PE code.  */
#include "coff/x86_64.h"
#include "coff/pe.h"

/* FIXME: This is a BFD internal header file, and we should not be
   using it here.  */
#include "../bfd/libcoff.h"

#undef  AOUTSZ
#define AOUTSZ		PEPAOUTSZ
#define PEAOUTHDR	PEPAOUTHDR

#include "deffile.h"
#include "pep-dll.h"
#include "safe-ctype.h"

/* Permit the emulation parameters to override the default section
   alignment by setting OVERRIDE_SECTION_ALIGNMENT.  FIXME: This makes
   it seem that include/coff/internal.h should not define
   PE_DEF_SECTION_ALIGNMENT.  */
#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
#undef  PE_DEF_SECTION_ALIGNMENT
#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
#endif

#ifdef TARGET_IS_i386pep
#define DLL_SUPPORT
#endif

#if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
#define	PE_DEF_SUBSYSTEM		3
#else
#undef  NT_EXE_IMAGE_BASE
#define NT_EXE_IMAGE_BASE		0x00010000
#undef  PE_DEF_SECTION_ALIGNMENT
#define	PE_DEF_SUBSYSTEM		2
#undef  PE_DEF_FILE_ALIGNMENT
#define PE_DEF_FILE_ALIGNMENT		0x00000200
#define PE_DEF_SECTION_ALIGNMENT	0x00000400
#endif


static struct internal_extra_pe_aouthdr pep;
static int dll;
static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
static int support_old_code = 0;
static lang_assignment_statement_type *image_base_statement = 0;
static unsigned short pe_dll_characteristics = 0;

#ifdef DLL_SUPPORT
static int    pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default).  */
static char * pep_out_def_filename = NULL;
static char * pep_implib_filename = NULL;
static int    pep_enable_auto_image_base = 0;
static char * pep_dll_search_prefix = NULL;
#endif

extern const char *output_filename;

static void
gld_${EMULATION_NAME}_before_parse (void)
{
  ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
  output_filename = "${EXECUTABLE_NAME:-a.exe}";
#ifdef DLL_SUPPORT
  config.dynamic_link = TRUE;
  config.has_shared = 1;
  link_info.pei386_auto_import = -1;
  link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2.  */

#if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
  lang_default_entry ("_WinMainCRTStartup");
#else
  lang_default_entry ("${ENTRY}");
#endif
#endif
}

/* PE format extra command line options.  */

/* Used for setting flags in the PE header.  */
enum options
{
  OPTION_BASE_FILE = 300 + 1,
  OPTION_DLL,
  OPTION_FILE_ALIGNMENT,
  OPTION_IMAGE_BASE,
  OPTION_MAJOR_IMAGE_VERSION,
  OPTION_MAJOR_OS_VERSION,
  OPTION_MAJOR_SUBSYSTEM_VERSION,
  OPTION_MINOR_IMAGE_VERSION,
  OPTION_MINOR_OS_VERSION,
  OPTION_MINOR_SUBSYSTEM_VERSION,
  OPTION_SECTION_ALIGNMENT,
  OPTION_STACK,
  OPTION_SUBSYSTEM,
  OPTION_HEAP,
  OPTION_SUPPORT_OLD_CODE,
  OPTION_OUT_DEF,
  OPTION_EXPORT_ALL,
  OPTION_EXCLUDE_SYMBOLS,
  OPTION_KILL_ATS,
  OPTION_STDCALL_ALIASES,
  OPTION_ENABLE_STDCALL_FIXUP,
  OPTION_DISABLE_STDCALL_FIXUP,
  OPTION_IMPLIB_FILENAME,
  OPTION_WARN_DUPLICATE_EXPORTS,
  OPTION_IMP_COMPAT,
  OPTION_ENABLE_AUTO_IMAGE_BASE,
  OPTION_DISABLE_AUTO_IMAGE_BASE,
  OPTION_DLL_SEARCH_PREFIX,
  OPTION_NO_DEFAULT_EXCLUDES,
  OPTION_DLL_ENABLE_AUTO_IMPORT,
  OPTION_DLL_DISABLE_AUTO_IMPORT,
  OPTION_ENABLE_EXTRA_PE_DEBUG,
  OPTION_EXCLUDE_LIBS,
  OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
  OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
  OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1,
  OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
  OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
  OPTION_USE_NUL_PREFIXED_IMPORT_TABLES,
  OPTION_ENABLE_LONG_SECTION_NAMES,
  OPTION_DISABLE_LONG_SECTION_NAMES,
  OPTION_DYNAMIC_BASE,
  OPTION_FORCE_INTEGRITY,
  OPTION_NX_COMPAT,
  OPTION_NO_ISOLATION,
  OPTION_NO_SEH,
  OPTION_NO_BIND,
  OPTION_WDM_DRIVER,
  OPTION_TERMINAL_SERVER_AWARE
};

static void
gld${EMULATION_NAME}_add_options
  (int ns ATTRIBUTE_UNUSED,
   char **shortopts ATTRIBUTE_UNUSED,
   int nl,
   struct option **longopts,
   int nrl ATTRIBUTE_UNUSED,
   struct option **really_longopts ATTRIBUTE_UNUSED)
{
  static const struct option xtra_long[] =
  {
    /* PE options */
    {"base-file", required_argument, NULL, OPTION_BASE_FILE},
    {"dll", no_argument, NULL, OPTION_DLL},
    {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
    {"heap", required_argument, NULL, OPTION_HEAP},
    {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
    {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
    {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
    {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
    {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
    {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
    {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
    {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
    {"stack", required_argument, NULL, OPTION_STACK},
    {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
    {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
    {"use-nul-prefixed-import-tables", no_argument, NULL,
     OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
#ifdef DLL_SUPPORT
    /* getopt allows abbreviations, so we do this to stop it
       from treating -o as an abbreviation for this option.  */
    {"output-def", required_argument, NULL, OPTION_OUT_DEF},
    {"output-def", required_argument, NULL, OPTION_OUT_DEF},
    {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
    {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
    {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
    {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
    {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
    {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
    {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
    {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
    {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
    {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
    /* getopt() allows abbreviations, so we do this to stop it from
       treating -c as an abbreviation for these --compat-implib.  */
    {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
    {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
    {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
    {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
    {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
    {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
    {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
    {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
    {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
    {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
    {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
    {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
    {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
#endif
    {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
    {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
    {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
    {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
    {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
    {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
    {"no-seh", no_argument, NULL, OPTION_NO_SEH},
    {"no-bind", no_argument, NULL, OPTION_NO_BIND},
    {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
    {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},    {NULL, no_argument, NULL, 0}
  };

  *longopts = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
  memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
}

/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
   parameters which may be input from the command line.  */

typedef struct
{
  void *ptr;
  int size;
  bfd_vma value;
  char *symbol;
  int inited;
} definfo;

#define D(field,symbol,def)  {&pep.field,sizeof(pep.field), def, symbol,0}

static definfo init[] =
{
  /* imagebase must be first */
#define IMAGEBASEOFF 0
  D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
#define DLLOFF 1
  {&dll, sizeof(dll), 0, "__dll__", 0},
#define MSIMAGEBASEOFF	2
  D(ImageBase,"___ImageBase", NT_EXE_IMAGE_BASE),
  D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
  D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
  D(MajorOperatingSystemVersion,"__major_os_version__", 4),
  D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
  D(MajorImageVersion,"__major_image_version__", 0),
  D(MinorImageVersion,"__minor_image_version__", 0),
  D(MajorSubsystemVersion,"__major_subsystem_version__", 5),
  D(MinorSubsystemVersion,"__minor_subsystem_version__", 2),
  D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
  D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
  D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
  D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
  D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
  D(LoaderFlags,"__loader_flags__", 0x0),
  D(DllCharacteristics, "__dll_characteristics__", 0x0), 
  { NULL, 0, 0, NULL, 0 }
};


static void
gld_${EMULATION_NAME}_list_options (FILE *file)
{
  fprintf (file, _("  --base_file <basefile>             Generate a base file for relocatable DLLs\n"));
  fprintf (file, _("  --dll                              Set image base to the default for DLLs\n"));
  fprintf (file, _("  --file-alignment <size>            Set file alignment\n"));
  fprintf (file, _("  --heap <size>                      Set initial size of the heap\n"));
  fprintf (file, _("  --image-base <address>             Set start address of the executable\n"));
  fprintf (file, _("  --major-image-version <number>     Set version number of the executable\n"));
  fprintf (file, _("  --major-os-version <number>        Set minimum required OS version\n"));
  fprintf (file, _("  --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
  fprintf (file, _("  --minor-image-version <number>     Set revision number of the executable\n"));
  fprintf (file, _("  --minor-os-version <number>        Set minimum required OS revision\n"));
  fprintf (file, _("  --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
  fprintf (file, _("  --section-alignment <size>         Set section alignment\n"));
  fprintf (file, _("  --stack <size>                     Set size of the initial stack\n"));
  fprintf (file, _("  --subsystem <name>[:<version>]     Set required OS subsystem [& version]\n"));
  fprintf (file, _("  --support-old-code                 Support interworking with old code\n"));
#ifdef DLL_SUPPORT
  fprintf (file, _("  --add-stdcall-alias                Export symbols with and without @nn\n"));
  fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
  fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
  fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
  fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
  fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
  fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
  fprintf (file, _("                                     export, place into import library instead.\n"));
  fprintf (file, _("  --export-all-symbols               Automatically export all globals to DLL\n"));
  fprintf (file, _("  --kill-at                          Remove @nn from exported symbols\n"));
  fprintf (file, _("  --out-implib <file>                Generate import library\n"));
  fprintf (file, _("  --output-def <file>                Generate a .DEF file for the built DLL\n"));
  fprintf (file, _("  --warn-duplicate-exports           Warn about duplicate exports.\n"));
  fprintf (file, _("  --compat-implib                    Create backward compatible import libs;\n\
                                       create __imp_<SYMBOL> as well.\n"));
  fprintf (file, _("  --enable-auto-image-base           Automatically choose image base for DLLs\n\
                                       unless user specifies one\n"));
  fprintf (file, _("  --disable-auto-image-base          Do not auto-choose image base. (default)\n"));
  fprintf (file, _("  --dll-search-prefix=<string>       When linking dynamically to a dll without\n\
                                       an importlib, use <string><basename>.dll\n\
                                       in preference to lib<basename>.dll \n"));
  fprintf (file, _("  --enable-auto-import               Do sophistcated linking of _sym to\n\
                                       __imp_sym for DATA references\n"));
  fprintf (file, _("  --disable-auto-import              Do not auto-import DATA items from DLLs\n"));
  fprintf (file, _("  --enable-runtime-pseudo-reloc      Work around auto-import limitations by\n\
                                       adding pseudo-relocations resolved at\n\
                                       runtime.\n"));
  fprintf (file, _("  --disable-runtime-pseudo-reloc     Do not add runtime pseudo-relocations for\n\
                                       auto-imported DATA.\n"));
  fprintf (file, _("  --enable-extra-pep-debug            Enable verbose debug output when building\n\
                                       or linking to DLLs (esp. auto-import)\n"));
  fprintf (file, _("  --enable-long-section-names        Use long COFF section names even in\n\
                                       executable image files\n"));
  fprintf (file, _("  --disable-long-section-names       Never use long COFF section names, even\n\
                                       in object files\n"));
  fprintf (file, _("  --dynamicbase			 Image base address may be relocated using\n\
				       address space layout randomization (ASLR)\n"));
  fprintf (file, _("  --forceinteg		 Code integrity checks are enforced\n"));
  fprintf (file, _("  --nxcompat		 Image is compatible with data execution prevention\n"));
  fprintf (file, _("  --no-isolation		 Image understands isolation but do not isolate the image\n"));
  fprintf (file, _("  --no-seh			 Image does not use SEH. No SE handler may\n\
				       be called in this image\n"));
  fprintf (file, _("  --no-bind		 	 Do not bind this image\n"));
  fprintf (file, _("  --wdmdriver		 Driver uses the WDM model\n"));
  fprintf (file, _("  --tsaware       		 Image is Terminal Server aware\n"));
#endif
}


static void
set_pep_name (char *name, bfd_vma val)
{
  int i;

  /* Find the name and set it.  */
  for (i = 0; init[i].ptr; i++)
    {
      if (strcmp (name, init[i].symbol) == 0)
	{
	  init[i].value = val;
	  init[i].inited = 1;
	  if (strcmp (name,"__image_base__") == 0)
	    set_pep_name ("___ImageBase", val);
	  return;
	}
    }
  abort ();
}


static void
set_pep_subsystem (void)
{
  const char *sver;
  const char *entry;
  const char *initial_symbol_char;
  char *end;
  int len;
  int i;
  int subsystem;
  unsigned long temp_subsystem;
  static const struct
    {
      const char *name;
      const int value;
      const char *entry;
    }
  v[] =
    {
      { "native",  1, "NtProcessStartup" },
      { "windows", 2, "WinMainCRTStartup" },
      { "console", 3, "mainCRTStartup" },
      { "posix",   7, "__PosixProcessStartup"},
      { "wince",   9, "_WinMainCRTStartup" },
      { "xbox",   14, "mainCRTStartup" },
      { NULL, 0, NULL }
    };
  /* Entry point name for arbitrary subsystem numbers.  */
  static const char default_entry[] = "mainCRTStartup";

  /* Check for the presence of a version number.  */
  sver = strchr (optarg, ':');
  if (sver == NULL)
    len = strlen (optarg);
  else
    {
      len = sver - optarg;
      set_pep_name ("__major_subsystem_version__",
		    strtoul (sver + 1, &end, 0));
      if (*end == '.')
	set_pep_name ("__minor_subsystem_version__",
		      strtoul (end + 1, &end, 0));
      if (*end != '\0')
	einfo (_("%P: warning: bad version number in -subsystem option\n"));
    }

  /* Check for numeric subsystem.  */
  temp_subsystem = strtoul (optarg, & end, 0);
  if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
    {
      /* Search list for a numeric match to use its entry point.  */
      for (i = 0; v[i].name; i++)
	if (v[i].value == (int) temp_subsystem)
	  break;

      /* If no match, use the default.  */
      if (v[i].name != NULL)
	entry = v[i].entry;
      else
	entry = default_entry;

      /* Use this subsystem.  */
      subsystem = (int) temp_subsystem;
    }
  else
    {
      /* Search for subsystem by name.  */
      for (i = 0; v[i].name; i++)
	if (strncmp (optarg, v[i].name, len) == 0
	    && v[i].name[len] == '\0')
	  break;

      if (v[i].name == NULL)
	{
	  einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
	  return;
	}

      entry = v[i].entry;
      subsystem = v[i].value;
    }

  set_pep_name ("__subsystem__", subsystem);

  initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
  if (*initial_symbol_char != '\0')
    {
      char *alc_entry;

      /* lang_default_entry expects its argument to be permanently
	 allocated, so we don't free this string.  */
      alc_entry = xmalloc (strlen (initial_symbol_char)
			   + strlen (entry)
			   + 1);
      strcpy (alc_entry, initial_symbol_char);
      strcat (alc_entry, entry);
      entry = alc_entry;
    }

  lang_default_entry (entry);

  return;
}


static void
set_pep_value (char *name)
{
  char *end;

  set_pep_name (name,  (bfd_vma) strtoull (optarg, &end, 0));

  if (end == optarg)
    einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);

  optarg = end;
}


static void
set_pep_stack_heap (char *resname, char *comname)
{
  set_pep_value (resname);

  if (*optarg == ',')
    {
      optarg++;
      set_pep_value (comname);
    }
  else if (*optarg)
    einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
}


static bfd_boolean
gld${EMULATION_NAME}_handle_option (int optc)
{
  switch (optc)
    {
    default:
      return FALSE;

    case OPTION_BASE_FILE:
      link_info.base_file = fopen (optarg, FOPEN_WB);
      if (link_info.base_file == NULL)
	{
	  /* xgettext:c-format */
	  fprintf (stderr, _("%s: Can't open base file %s\n"),
		   program_name, optarg);
	  xexit (1);
	}
      break;

      /* PE options.  */
    case OPTION_HEAP:
      set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
      break;
    case OPTION_STACK:
      set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
      break;
    case OPTION_SUBSYSTEM:
      set_pep_subsystem ();
      break;
    case OPTION_MAJOR_OS_VERSION:
      set_pep_value ("__major_os_version__");
      break;
    case OPTION_MINOR_OS_VERSION:
      set_pep_value ("__minor_os_version__");
      break;
    case OPTION_MAJOR_SUBSYSTEM_VERSION:
      set_pep_value ("__major_subsystem_version__");
      break;
    case OPTION_MINOR_SUBSYSTEM_VERSION:
      set_pep_value ("__minor_subsystem_version__");
      break;
    case OPTION_MAJOR_IMAGE_VERSION:
      set_pep_value ("__major_image_version__");
      break;
    case OPTION_MINOR_IMAGE_VERSION:
      set_pep_value ("__minor_image_version__");
      break;
    case OPTION_FILE_ALIGNMENT:
      set_pep_value ("__file_alignment__");
      break;
    case OPTION_SECTION_ALIGNMENT:
      set_pep_value ("__section_alignment__");
      break;
    case OPTION_DLL:
      set_pep_name ("__dll__", 1);
      break;
    case OPTION_IMAGE_BASE:
      set_pep_value ("__image_base__");
      break;
    case OPTION_SUPPORT_OLD_CODE:
      support_old_code = 1;
      break;
    case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
      pep_use_nul_prefixed_import_tables = TRUE;
      break;
#ifdef DLL_SUPPORT
    case OPTION_OUT_DEF:
      pep_out_def_filename = xstrdup (optarg);
      break;
    case OPTION_EXPORT_ALL:
      pep_dll_export_everything = 1;
      break;
    case OPTION_EXCLUDE_SYMBOLS:
      pep_dll_add_excludes (optarg, EXCLUDESYMS);
      break;
    case OPTION_EXCLUDE_LIBS:
      pep_dll_add_excludes (optarg, EXCLUDELIBS);
      break;
    case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
      pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
      break;
    case OPTION_KILL_ATS:
      pep_dll_kill_ats = 1;
      break;
    case OPTION_STDCALL_ALIASES:
      pep_dll_stdcall_aliases = 1;
      break;
    case OPTION_ENABLE_STDCALL_FIXUP:
      pep_enable_stdcall_fixup = 1;
      break;
    case OPTION_DISABLE_STDCALL_FIXUP:
      pep_enable_stdcall_fixup = 0;
      break;
    case OPTION_IMPLIB_FILENAME:
      pep_implib_filename = xstrdup (optarg);
      break;
    case OPTION_WARN_DUPLICATE_EXPORTS:
      pep_dll_warn_dup_exports = 1;
      break;
    case OPTION_IMP_COMPAT:
      pep_dll_compat_implib = 1;
      break;
    case OPTION_ENABLE_AUTO_IMAGE_BASE:
      pep_enable_auto_image_base = 1;
      break;
    case OPTION_DISABLE_AUTO_IMAGE_BASE:
      pep_enable_auto_image_base = 0;
      break;
    case OPTION_DLL_SEARCH_PREFIX:
      pep_dll_search_prefix = xstrdup (optarg);
      break;
    case OPTION_NO_DEFAULT_EXCLUDES:
      pep_dll_do_default_excludes = 0;
      break;
    case OPTION_DLL_ENABLE_AUTO_IMPORT:
      link_info.pei386_auto_import = 1;
      break;
    case OPTION_DLL_DISABLE_AUTO_IMPORT:
      link_info.pei386_auto_import = 0;
      break;
    case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
      link_info.pei386_runtime_pseudo_reloc = 2;
      break;
    case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
      link_info.pei386_runtime_pseudo_reloc = 0;
      break;
    case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
      link_info.pei386_runtime_pseudo_reloc = 1;
      break;
    case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
      link_info.pei386_runtime_pseudo_reloc = 2;
      break;
    case OPTION_ENABLE_EXTRA_PE_DEBUG:
      pep_dll_extra_pe_debug = 1;
      break;
#endif
    case OPTION_ENABLE_LONG_SECTION_NAMES:
      pep_use_coff_long_section_names = 1;
      break;
    case OPTION_DISABLE_LONG_SECTION_NAMES:
      pep_use_coff_long_section_names = 0;
      break;
    /*  Get DLLCharacteristics bits  */
    case OPTION_DYNAMIC_BASE:
      pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
      break;
    case OPTION_FORCE_INTEGRITY:
      pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
      break;
    case OPTION_NX_COMPAT:
      pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
      break;
    case OPTION_NO_ISOLATION:
      pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
      break;
    case OPTION_NO_SEH:
      pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
      break;
    case OPTION_NO_BIND:
      pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
      break;
    case OPTION_WDM_DRIVER:
      pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
      break;
    case OPTION_TERMINAL_SERVER_AWARE:
      pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
      break;
    }

  /*  Set DLLCharacteristics bits  */
  set_pep_name ("__dll_characteristics__", pe_dll_characteristics);
 
  return TRUE;
}


#ifdef DLL_SUPPORT
static unsigned long
strhash (const char *str)
{
  const unsigned char *s;
  unsigned long hash;
  unsigned int c;
  unsigned int len;

  hash = 0;
  len = 0;
  s = (const unsigned char *) str;
  while ((c = *s++) != '\0')
    {
      hash += c + (c << 17);
      hash ^= hash >> 2;
      ++len;
    }
  hash += len + (len << 17);
  hash ^= hash >> 2;

  return hash;
}

/* Use the output file to create a image base for relocatable DLLs.  */

static bfd_vma
compute_dll_image_base (const char *ofile)
{
  bfd_vma hash = (bfd_vma) strhash (ofile);
  return 0x61300000 + ((hash << 16) & 0x0FFC0000);
}
#endif

/* Assign values to the special symbols before the linker script is
   read.  */

static void
gld_${EMULATION_NAME}_set_symbols (void)
{
  /* Run through and invent symbols for all the
     names and insert the defaults.  */
  int j;

  if (!init[IMAGEBASEOFF].inited)
    {
      if (link_info.relocatable)
	init[IMAGEBASEOFF].value = 0;
      else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
#ifdef DLL_SUPPORT
	init[IMAGEBASEOFF].value = (pep_enable_auto_image_base) ?
	  compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
#else
	init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
#endif
      else
	init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
	init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
    }

  /* Don't do any symbol assignments if this is a relocatable link.  */
  if (link_info.relocatable)
    return;

  /* Glue the assignments into the abs section.  */
  push_stat_ptr (&abs_output_section->children);

  for (j = 0; init[j].ptr; j++)
    {
      bfd_vma val = init[j].value;
      lang_assignment_statement_type *rv;
      rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
					   exp_intop (val)));
      if (init[j].size == sizeof (short))
	*(short *) init[j].ptr = (short) val;
      else if (init[j].size == sizeof (int))
	*(int *) init[j].ptr = (int) val;
      else if (init[j].size == sizeof (long))
	*(long *) init[j].ptr = (long) val;
      /* This might be a long long or other special type.  */
      else if (init[j].size == sizeof (bfd_vma))
	*(bfd_vma *) init[j].ptr = val;
      else	abort ();
      if (j == IMAGEBASEOFF)
	image_base_statement = rv;
    }
  /* Restore the pointer.  */
  pop_stat_ptr ();

  if (pep.FileAlignment > pep.SectionAlignment)
    {
      einfo (_("%P: warning, file alignment > section alignment.\n"));
    }
}

/* This is called after the linker script and the command line options
   have been read.  */

static void
gld_${EMULATION_NAME}_after_parse (void)
{
  /* The Windows libraries are designed for the linker to treat the
     entry point as an undefined symbol.  Otherwise, the .obj that
     defines mainCRTStartup is brought in because it is the first
     encountered in libc.lib and it has other symbols in it which will
     be pulled in by the link process.  To avoid this, we act as
     though the user specified -u with the entry point symbol.

     This function is called after the linker script and command line
     options have been read, so at this point we know the right entry
     point.  This function is called before the input files are
     opened, so registering the symbol as undefined will make a
     difference.  */

  if (! link_info.relocatable && entry_symbol.name != NULL)
    ldlang_add_undef (entry_symbol.name);

  /* PR ld/6744:  Warn the user if they have used an ELF-only
     option hoping it will work on PE+.  */
  if (link_info.export_dynamic)
    einfo (_("%P: warning: --export-dynamic is not supported for PE+ "
      "targets, did you mean --export-all-symbols?\n"));
}

/* pep-dll.c directly accesses pep_data_import_dll,
   so it must be defined outside of #ifdef DLL_SUPPORT.
   Note - this variable is deliberately not initialised.
   This allows it to be treated as a common varaible, and only
   exist in one incarnation in a multiple target enabled linker.  */
char * pep_data_import_dll;

#ifdef DLL_SUPPORT
static struct bfd_link_hash_entry *pep_undef_found_sym;

static bfd_boolean
pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
{
  int sl;
  char *string = inf;

  sl = strlen (string);
  if (h->type == bfd_link_hash_defined
      && strncmp (h->root.string, string, sl) == 0
      && h->root.string[sl] == '@')
    {
      pep_undef_found_sym = h;
      return FALSE;
    }
  return TRUE;
}

static void
pep_fixup_stdcalls (void)
{
  static int gave_warning_message = 0;
  struct bfd_link_hash_entry *undef, *sym;

  if (pep_dll_extra_pe_debug)
    printf ("%s\n", __FUNCTION__);

  for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
    if (undef->type == bfd_link_hash_undefined)
      {
	char* at = strchr (undef->root.string, '@');
	int lead_at = (*undef->root.string == '@');
	/* For now, don't try to fixup fastcall symbols.  */

	if (at && !lead_at)
	  {
	    /* The symbol is a stdcall symbol, so let's look for a
	       cdecl symbol with the same name and resolve to that.  */
	    char *cname = xstrdup (undef->root.string /* + lead_at */);
	    at = strchr (cname, '@');
	    *at = 0;
	    sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);

	    if (sym && sym->type == bfd_link_hash_defined)
	      {
		undef->type = bfd_link_hash_defined;
		undef->u.def.value = sym->u.def.value;
		undef->u.def.section = sym->u.def.section;

		if (pep_enable_stdcall_fixup == -1)
		  {
		    einfo (_("Warning: resolving %s by linking to %s\n"),
			   undef->root.string, cname);
		    if (! gave_warning_message)
		      {
			gave_warning_message = 1;
			einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
			einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
		      }
		  }
	      }
	  }
	else
	  {
	    /* The symbol is a cdecl symbol, so we look for stdcall
	       symbols - which means scanning the whole symbol table.  */
	    pep_undef_found_sym = 0;
	    bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
				    (char *) undef->root.string);
	    sym = pep_undef_found_sym;
	    if (sym)
	      {
		undef->type = bfd_link_hash_defined;
		undef->u.def.value = sym->u.def.value;
		undef->u.def.section = sym->u.def.section;

		if (pep_enable_stdcall_fixup == -1)
		  {
		    einfo (_("Warning: resolving %s by linking to %s\n"),
			   undef->root.string, sym->root.string);
		    if (! gave_warning_message)
		      {
			gave_warning_message = 1;
			einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
			einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
		      }
		  }
	      }
	  }
      }
}

static int
make_import_fixup (arelent *rel, asection *s)
{
  struct bfd_symbol *sym = *rel->sym_ptr_ptr;
  char addend[8];
  bfd_vma _addend = 0;
  int suc = 0;

  if (pep_dll_extra_pe_debug)
    printf ("arelent: %s@%#lx: add=%li\n", sym->name,
	    (unsigned long) rel->address, (long) rel->addend);

  memset (addend, 0, sizeof (addend));
  switch ((rel->howto->bitsize))
    {
      case 8:
        suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
        if (suc && rel->howto->pc_relative)
          _addend = (bfd_vma) ((bfd_signed_vma) ((char) bfd_get_8 (s->owner, addend)));
        else if (suc)
          _addend = ((bfd_vma) bfd_get_8 (s->owner, addend)) & 0xff;
        break;
      case 16:
        suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
        if (suc && rel->howto->pc_relative)
          _addend = (bfd_vma) ((bfd_signed_vma) ((short) bfd_get_16 (s->owner, addend)));
        else if (suc)
          _addend = ((bfd_vma) bfd_get_16 (s->owner, addend)) & 0xffff;
        break;
      case 32:
        suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
        if (suc && rel->howto->pc_relative)
          _addend = (bfd_vma) ((bfd_signed_vma) ((int) bfd_get_32 (s->owner, addend)));
        else if (suc)
          _addend = ((bfd_vma) bfd_get_32 (s->owner, addend)) & 0xffffffff;
        break;
      case 64:
        suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
        if (suc)
          _addend = ((bfd_vma) bfd_get_64 (s->owner, addend));
        break;
    }
  if (! suc)
    einfo (_("%C: Cannot get section contents - auto-import exception\n"),
	   s->owner, s, rel->address);

  if (pep_dll_extra_pe_debug)
    {
      printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx", (long) _addend, (long) rel->addend, (long) rel->address);
      if (rel->howto->pc_relative) printf (" pcrel");
      printf (" %d bit rel.\n",(int) rel->howto->bitsize);
  }
  pep_create_import_fixup (rel, s, _addend);

  return 1;
}

static void
pep_find_data_imports (void)
{
  struct bfd_link_hash_entry *undef, *sym;

  if (link_info.pei386_auto_import == 0)
    return;

  for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
    {
      if (undef->type == bfd_link_hash_undefined)
	{
	  /* C++ symbols are *long*.  */
	  char buf[4096];

	  if (pep_dll_extra_pe_debug)
	    printf ("%s:%s\n", __FUNCTION__, undef->root.string);

	  sprintf (buf, "__imp_%s", undef->root.string);

	  sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);

	  if (sym && sym->type == bfd_link_hash_defined)
	    {
	      bfd *b = sym->u.def.section->owner;
	      asymbol **symbols;
	      int nsyms, i;

	      if (link_info.pei386_auto_import == -1)
		{
		  static bfd_boolean warned = FALSE;

		  info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
			    undef->root.string, buf);

		  /* PR linker/4844.  */
		  if (! warned)
		    {
		      warned = TRUE;
		      einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
		    }
		}

	      if (!bfd_generic_link_read_symbols (b))
		{
		  einfo (_("%B%F: could not read symbols: %E\n"), b);
		  return;
		}

	      symbols = bfd_get_outsymbols (b);
	      nsyms = bfd_get_symcount (b);

	      for (i = 0; i < nsyms; i++)
		{
		  if (! CONST_STRNEQ (symbols[i]->name, "__head_"))
		    continue;

		  if (pep_dll_extra_pe_debug)
		    printf ("->%s\n", symbols[i]->name);

		  pep_data_import_dll = (char*) (symbols[i]->name +
						sizeof ("__head_") - 1);
		  break;
		}

	      pep_walk_relocs_of_symbol (&link_info, undef->root.string,
					make_import_fixup);

	      /* Let's differentiate it somehow from defined.  */
	      undef->type = bfd_link_hash_defweak;
	      /* We replace original name with __imp_ prefixed, this
		 1) may trash memory 2) leads to duplicate symbol generation.
		 Still, IMHO it's better than having name poluted.  */
	      undef->root.string = sym->root.string;
	      undef->u.def.value = sym->u.def.value;
	      undef->u.def.section = sym->u.def.section;
	    }
	}
    }
}

static bfd_boolean
pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
{
  if (pep_dll_extra_pe_debug)
    printf ("+%s\n", h->string);

  return TRUE;
}
#endif /* DLL_SUPPORT */

static void 
debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
{
  int *found = (int *) obj;
  if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
    *found = 1;
}

static void
gld_${EMULATION_NAME}_after_open (void)
{
#ifdef DLL_SUPPORT
  if (pep_dll_extra_pe_debug)
    {
      bfd *a;
      struct bfd_link_hash_entry *sym;

      printf ("%s()\n", __FUNCTION__);

      for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
	printf ("-%s\n", sym->root.string);
      bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);

      for (a = link_info.input_bfds; a; a = a->link_next)
	printf ("*%s\n",a->filename);
    }
#endif

  /* Pass the wacky PE command line options into the output bfd.
     FIXME: This should be done via a function, rather than by
     including an internal BFD header.  */

  if (coff_data (link_info.output_bfd) == NULL
      || coff_data (link_info.output_bfd)->pe == 0)
    einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
	   link_info.output_bfd);

  pe_data (link_info.output_bfd)->pe_opthdr = pep;
  pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
  pe_data (link_info.output_bfd)->real_flags |= real_flags;

  /* At this point we must decide whether to use long section names
     in the output or not.  If the user hasn't explicitly specified
     on the command line, we leave it to the default for the format
     (object files yes, image files no), except if there is debug
     information present; GDB relies on the long section names to
     find it, so enable it in that case.  */
  if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
    {
      /* Iterate over all sections of all input BFDs, checking
         for any that begin 'debug_' and are long names.  */
      LANG_FOR_EACH_INPUT_STATEMENT (is)
	{
	  int found_debug = 0;
	  bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
	  if (found_debug)
	    {
	      pep_use_coff_long_section_names = 1;
	      break;
	    }
	}
    }

  pep_output_file_set_long_section_names (link_info.output_bfd);

#ifdef DLL_SUPPORT
  if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
    pep_fixup_stdcalls ();

  pep_process_import_defs (link_info.output_bfd, &link_info);

  pep_find_data_imports ();

#ifndef TARGET_IS_i386pep
  if (link_info.shared)
#else
  if (!link_info.relocatable)
#endif
    pep_dll_build_sections (link_info.output_bfd, &link_info);

#ifndef TARGET_IS_i386pep
  else
    pep_exe_build_sections (link_info.output_bfd, &link_info);
#endif
#endif /* DLL_SUPPORT */

  {
    /* This next chunk of code tries to detect the case where you have
       two import libraries for the same DLL (specifically,
       symbolically linking libm.a and libc.a in cygwin to
       libcygwin.a).  In those cases, it's possible for function
       thunks from the second implib to be used but without the
       head/tail objects, causing an improper import table.  We detect
       those cases and rename the "other" import libraries to match
       the one the head/tail come from, so that the linker will sort
       things nicely and produce a valid import table.  */

    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (is->the_bfd->my_archive)
	  {
	    int idata2 = 0, reloc_count=0, is_imp = 0;
	    asection *sec;

	    /* See if this is an import library thunk.  */
	    for (sec = is->the_bfd->sections; sec; sec = sec->next)
	      {
		if (strcmp (sec->name, ".idata\$2") == 0)
		  idata2 = 1;
		if (CONST_STRNEQ (sec->name, ".idata\$"))
		  is_imp = 1;
		reloc_count += sec->reloc_count;
	      }

	    if (is_imp && !idata2 && reloc_count)
	      {
		/* It is, look for the reference to head and see if it's
		   from our own library.  */
		for (sec = is->the_bfd->sections; sec; sec = sec->next)
		  {
		    int i;
		    long relsize;
		    asymbol **symbols;
		    arelent **relocs;
		    int nrelocs;

		    relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
		    if (relsize < 1)
		      break;

		    if (!bfd_generic_link_read_symbols (is->the_bfd))
		      {
			einfo (_("%B%F: could not read symbols: %E\n"),
			       is->the_bfd);
			return;
		      }
		    symbols = bfd_get_outsymbols (is->the_bfd);

		    relocs = xmalloc ((size_t) relsize);
		    nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
						      relocs, symbols);
		    if (nrelocs < 0)
		      {
			free (relocs);
			einfo ("%X%P: unable to process relocs: %E\n");
			return;
		      }

		    for (i = 0; i < nrelocs; i++)
		      {
			struct bfd_symbol *s;
			struct bfd_link_hash_entry * blhe;
			char *other_bfd_filename;
			char *n;

			s = (relocs[i]->sym_ptr_ptr)[0];

			if (s->flags & BSF_LOCAL)
			  continue;

			/* Thunk section with reloc to another bfd.  */
			blhe = bfd_link_hash_lookup (link_info.hash,
						     s->name,
						     FALSE, FALSE, TRUE);

			if (blhe == NULL
			    || blhe->type != bfd_link_hash_defined)
			  continue;

			other_bfd_filename
			  = blhe->u.def.section->owner->my_archive
			    ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
			    : bfd_get_filename (blhe->u.def.section->owner);

			if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
				    other_bfd_filename) == 0)
			  continue;

			/* Rename this implib to match the other one.  */
			n = xmalloc (strlen (other_bfd_filename) + 1);
			strcpy (n, other_bfd_filename);
			is->the_bfd->my_archive->filename = n;
		      }

		    free (relocs);
		    /* Note - we do not free the symbols,
		       they are now cached in the BFD.  */
		  }
	      }
	  }
      }
  }

  {
    int is_ms_arch = 0;
    bfd *cur_arch = 0;
    lang_input_statement_type *is2;
    lang_input_statement_type *is3;

    /* Careful - this is a shell script.  Watch those dollar signs! */
    /* Microsoft import libraries have every member named the same,
       and not in the right order for us to link them correctly.  We
       must detect these and rename the members so that they'll link
       correctly.  There are three types of objects: the head, the
       thunks, and the sentinel(s).  The head is easy; it's the one
       with idata2.  We assume that the sentinels won't have relocs,
       and the thunks will.  It's easier than checking the symbol
       table for external references.  */
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (is->the_bfd->my_archive)
	  {
	    char *pnt;
	    bfd *arch = is->the_bfd->my_archive;

	    if (cur_arch != arch)
	      {
		cur_arch = arch;
		is_ms_arch = 1;

		for (is3 = is;
		     is3 && is3->the_bfd->my_archive == arch;
		     is3 = (lang_input_statement_type *) is3->next)
		  {
		    /* A MS dynamic import library can also contain static
		       members, so look for the first element with a .dll
		       extension, and use that for the remainder of the
		       comparisons.  */
		    pnt = strrchr (is3->the_bfd->filename, '.');
		    if (pnt != NULL && strcmp (pnt, ".dll") == 0)
		      break;
		  }

		if (is3 == NULL)
		  is_ms_arch = 0;
		else
		  {
		    /* OK, found one.  Now look to see if the remaining
		       (dynamic import) members use the same name.  */
		    for (is2 = is;
			 is2 && is2->the_bfd->my_archive == arch;
			 is2 = (lang_input_statement_type *) is2->next)
		      {
			/* Skip static members, ie anything with a .obj
			   extension.  */
			pnt = strrchr (is2->the_bfd->filename, '.');
			if (pnt != NULL && strcmp (pnt, ".obj") == 0)
			  continue;

			if (strcmp (is3->the_bfd->filename,
				    is2->the_bfd->filename))
			  {
			    is_ms_arch = 0;
			    break;
			  }
		      }
		  }
	      }

	    /* This fragment might have come from an .obj file in a Microsoft
	       import, and not an actual import record. If this is the case,
	       then leave the filename alone.  */
	    pnt = strrchr (is->the_bfd->filename, '.');

	    if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
	      {
		int idata2 = 0, reloc_count=0;
		asection *sec;
		char *new_name, seq;

		for (sec = is->the_bfd->sections; sec; sec = sec->next)
		  {
		    if (strcmp (sec->name, ".idata\$2") == 0)
		      idata2 = 1;
		    reloc_count += sec->reloc_count;
		  }

		if (idata2) /* .idata2 is the TOC */
		  seq = 'a';
		else if (reloc_count > 0) /* thunks */
		  seq = 'b';
		else /* sentinel */
		  seq = 'c';

		new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
		sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
		is->the_bfd->filename = new_name;

		new_name = xmalloc (strlen (is->filename) + 3);
		sprintf (new_name, "%s.%c", is->filename, seq);
		is->filename = new_name;
	      }
	  }
      }
  }
}

static void
gld_${EMULATION_NAME}_before_allocation (void)
{
  before_allocation_default ();
}

#ifdef DLL_SUPPORT
/* This is called when an input file isn't recognized as a BFD.  We
   check here for .DEF files and pull them in automatically.  */

static int
saw_option (char *option)
{
  int i;

  for (i = 0; init[i].ptr; i++)
    if (strcmp (init[i].symbol, option) == 0)
      return init[i].inited;
  return 0;
}
#endif /* DLL_SUPPORT */

static bfd_boolean
gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
{
#ifdef DLL_SUPPORT
  const char *ext = entry->filename + strlen (entry->filename) - 4;

  if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
    {
      pep_def_file = def_file_parse (entry->filename, pep_def_file);

      if (pep_def_file)
	{
	  int i, buflen=0, len;
	  char *buf;

	  for (i = 0; i < pep_def_file->num_exports; i++)
	    {
	      len = strlen (pep_def_file->exports[i].internal_name);
	      if (buflen < len + 2)
		buflen = len + 2;
	    }

	  buf = xmalloc (buflen);

	  for (i = 0; i < pep_def_file->num_exports; i++)
	    {
	      struct bfd_link_hash_entry *h;

	      sprintf (buf, "_%s", pep_def_file->exports[i].internal_name);

	      h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
	      if (h == (struct bfd_link_hash_entry *) NULL)
		einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
	      if (h->type == bfd_link_hash_new)
		{
		  h->type = bfd_link_hash_undefined;
		  h->u.undef.abfd = NULL;
		  bfd_link_add_undef (link_info.hash, h);
		}
	    }
	  free (buf);

	  /* def_file_print (stdout, pep_def_file); */
	  if (pep_def_file->is_dll == 1)
	    link_info.shared = 1;

	  if (pep_def_file->base_address != (bfd_vma)(-1))
	    {
	      pep.ImageBase
		= pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
		= init[IMAGEBASEOFF].value
		= pep_def_file->base_address;
	      init[IMAGEBASEOFF].inited = 1;
	      if (image_base_statement)
		image_base_statement->exp = exp_assop ('=', "__image_base__",
						       exp_intop (pep.ImageBase));
	    }

	  if (pep_def_file->stack_reserve != -1
	      && ! saw_option ("__size_of_stack_reserve__"))
	    {
	      pep.SizeOfStackReserve = pep_def_file->stack_reserve;
	      if (pep_def_file->stack_commit != -1)
		pep.SizeOfStackCommit = pep_def_file->stack_commit;
	    }
	  if (pep_def_file->heap_reserve != -1
	      && ! saw_option ("__size_of_heap_reserve__"))
	    {
	      pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
	      if (pep_def_file->heap_commit != -1)
		pep.SizeOfHeapCommit = pep_def_file->heap_commit;
	    }
	  return TRUE;
	}
    }
#endif
  return FALSE;
}

static bfd_boolean
gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
{
#ifdef DLL_SUPPORT
#ifdef TARGET_IS_i386pep
  pep_dll_id_target ("pei-x86-64");
#endif
  if (pep_bfd_is_dll (entry->the_bfd))
    return pep_implied_import_dll (entry->filename);
#endif
  return FALSE;
}

static void
gld_${EMULATION_NAME}_finish (void)
{
  finish_default ();

#ifdef DLL_SUPPORT
  if (link_info.shared
      || (!link_info.relocatable && pep_def_file->num_exports != 0))
    {
      pep_dll_fill_sections (link_info.output_bfd, &link_info);
      if (pep_implib_filename)
	pep_dll_generate_implib (pep_def_file, pep_implib_filename, &link_info);
    }

  if (pep_out_def_filename)
    pep_dll_generate_def_file (pep_out_def_filename);
#endif /* DLL_SUPPORT */

  /* I don't know where .idata gets set as code, but it shouldn't be.  */
  {
    asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");

    if (asec)
      {
	asec->flags &= ~SEC_CODE;
	asec->flags |= SEC_DATA;
      }
  }
}


/* Place an orphan section.

   We use this to put sections in a reasonable place in the file, and
   to ensure that they are aligned as required.

   We handle grouped sections here as well.  A section named .foo\$nn
   goes into the output section .foo.  All grouped sections are sorted
   by name.

   Grouped sections for the default sections are handled by the
   default linker script using wildcards, and are sorted by
   sort_sections.  */

static lang_output_section_statement_type *
gld_${EMULATION_NAME}_place_orphan (asection *s,
				    const char *secname,
				    int constraint)
{
  const char *orig_secname = secname;
  char *dollar = NULL;
  lang_output_section_statement_type *os;
  lang_statement_list_type add_child;
  lang_statement_union_type **pl;

  /* Look through the script to see where to place this section.  */
  if (!link_info.relocatable
      && (dollar = strchr (secname, '\$')) != NULL)
    {
      size_t len = dollar - secname;
      char *newname = xmalloc (len + 1);
      memcpy (newname, secname, len);
      newname[len] = '\0';
      secname = newname;
    }

  lang_list_init (&add_child);

  if (constraint == 0
      && (os = lang_output_section_find (secname)) != NULL
      && os->bfd_section != NULL
      && (os->bfd_section->flags == 0
	  || ((s->flags ^ os->bfd_section->flags)
	      & (SEC_LOAD | SEC_ALLOC)) == 0))
    {
      /* We already have an output section statement with this
	 name, and its bfd section has compatible flags.
	 If the section already exists but does not have any flags set,
	 then it has been created by the linker, probably as a result of
	 a --section-start command line switch.  */
      lang_add_section (&add_child, s, os);
    }
  else
    {
      static struct orphan_save hold[] =
	{
	  { ".text",
	    SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
	    0, 0, 0, 0 },
	  { ".rdata",
	    SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
	    0, 0, 0, 0 },
	  { ".data",
	    SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
	    0, 0, 0, 0 },
	  { ".bss",
	    SEC_ALLOC,
	    0, 0, 0, 0 }
	};
      enum orphan_save_index
	{
	  orphan_text = 0,
	  orphan_rodata,
	  orphan_data,
	  orphan_bss
	};
      static int orphan_init_done = 0;
      struct orphan_save *place;
      lang_output_section_statement_type *after;
      etree_type *address;

      if (!orphan_init_done)
	{
	  struct orphan_save *ho;
	  for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
	    if (ho->name != NULL)
	      {
		ho->os = lang_output_section_find (ho->name);
		if (ho->os != NULL && ho->os->flags == 0)
		  ho->os->flags = ho->flags;
	      }
	  orphan_init_done = 1;
	}

      /* Try to put the new output section in a reasonable place based
	 on the section name and section flags.  */

      place = NULL;
      if ((s->flags & SEC_ALLOC) == 0)
	;
      else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
	place = &hold[orphan_bss];
      else if ((s->flags & SEC_READONLY) == 0)
	place = &hold[orphan_data];
      else if ((s->flags & SEC_CODE) == 0)
	place = &hold[orphan_rodata];
      else
	place = &hold[orphan_text];

      after = NULL;
      if (place != NULL)
	{
	  if (place->os == NULL)
	    place->os = lang_output_section_find (place->name);
	  after = place->os;
	  if (after == NULL)
	    after = lang_output_section_find_by_flags (s, &place->os, NULL);
	  if (after == NULL)
	    /* *ABS* is always the first output section statement.  */
	    after = (&lang_output_section_statement.head
		     ->output_section_statement);
	}

      /* All sections in an executable must be aligned to a page boundary.  */
      address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
      os = lang_insert_orphan (s, secname, constraint, after, place, address,
			       &add_child);
    }

  /* If the section name has a '\$', sort it with the other '\$'
     sections.  */
  for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
    {
      lang_input_section_type *ls;
      const char *lname;

      if ((*pl)->header.type != lang_input_section_enum)
	continue;

      ls = &(*pl)->input_section;

      lname = bfd_get_section_name (ls->section->owner, ls->section);
      if (strchr (lname, '\$') != NULL
	  && (dollar == NULL || strcmp (orig_secname, lname) < 0))
	break;
    }

  if (add_child.head != NULL)
    {
      *add_child.tail = *pl;
      *pl = add_child.head;
    }

  return os;
}

static bfd_boolean
gld_${EMULATION_NAME}_open_dynamic_archive
  (const char *arch ATTRIBUTE_UNUSED,
   search_dirs_type *search,
   lang_input_statement_type *entry)
{
  static const struct
    {
      const char * format;
      bfd_boolean use_prefix;
    }
  libname_fmt [] =
    {
      /* Preferred explicit import library for dll's.  */
      { "lib%s.dll.a", FALSE },
      /* Alternate explicit import library for dll's.  */
      { "%s.dll.a", FALSE },
      /* "libfoo.a" could be either an import lib or a static lib.
          For backwards compatibility, libfoo.a needs to precede
          libfoo.dll and foo.dll in the search.  */
      { "lib%s.a", FALSE },
      /* The 'native' spelling of an import lib name is "foo.lib".  */
      { "%s.lib", FALSE },
#ifdef DLL_SUPPORT
      /* Try "<prefix>foo.dll" (preferred dll name, if specified).  */
      {	"%s%s.dll", TRUE },
#endif
      /* Try "libfoo.dll" (default preferred dll name).  */
      {	"lib%s.dll", FALSE },
      /* Finally try 'native' dll name "foo.dll".  */
      {  "%s.dll", FALSE },
      /* Note: If adding more formats to this table, make sure to check to
	 see if their length is longer than libname_fmt[0].format, and if
	 so, update the call to xmalloc() below.  */
      { NULL, FALSE }
    };
  static unsigned int format_max_len = 0;
  const char * filename;
  char * full_string;
  char * base_string;
  unsigned int i;


  if (! entry->is_archive)
    return FALSE;

  filename = entry->filename;

  if (format_max_len == 0)
    /* We need to allow space in the memory that we are going to allocate
       for the characters in the format string.  Since the format array is
       static we only need to calculate this information once.  In theory
       this value could also be computed statically, but this introduces
       the possibility for a discrepancy and hence a possible memory
       corruption.  The lengths we compute here will be too long because
       they will include any formating characters (%s) in the strings, but
       this will not matter.  */
    for (i = 0; libname_fmt[i].format; i++)
      if (format_max_len < strlen (libname_fmt[i].format))
	format_max_len = strlen (libname_fmt[i].format);

  full_string = xmalloc (strlen (search->name)
			 + strlen (filename)
			 + format_max_len
#ifdef DLL_SUPPORT
			 + (pep_dll_search_prefix
			    ? strlen (pep_dll_search_prefix) : 0)
#endif
			 /* Allow for the terminating NUL and for the path
			    separator character that is inserted between
			    search->name and the start of the format string.  */
			 + 2);

  sprintf (full_string, "%s/", search->name);
  base_string = full_string + strlen (full_string);

  for (i = 0; libname_fmt[i].format; i++)
    {
#ifdef DLL_SUPPORT
      if (libname_fmt[i].use_prefix)
	{
	  if (!pep_dll_search_prefix)
	    continue;
	  sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
	}
      else
#endif
	sprintf (base_string, libname_fmt[i].format, filename);

      if (ldfile_try_open_bfd (full_string, entry))
	break;
    }

  if (!libname_fmt[i].format)
    {
      free (full_string);
      return FALSE;
    }

  entry->filename = full_string;

  return TRUE;
}

static int
gld_${EMULATION_NAME}_find_potential_libraries
  (char *name, lang_input_statement_type *entry)
{
  return ldfile_open_file_search (name, entry, "", ".lib");
}

static char *
gld_${EMULATION_NAME}_get_script (int *isfile)
EOF
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
sc="-f stringify.sed"

fragment <<EOF
{
  *isfile = 0;

  if (link_info.relocatable && config.build_constructors)
    return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu			>> e${EMULATION_NAME}.c
echo '  ; else if (link_info.relocatable) return'	>> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xr			>> e${EMULATION_NAME}.c
echo '  ; else if (!config.text_read_only) return'	>> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xbn			>> e${EMULATION_NAME}.c
echo '  ; else if (!config.magic_demand_paged) return'	>> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xn			>> e${EMULATION_NAME}.c
if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
echo '  ; else if (link_info.pei386_auto_import == 1) return'	>> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xa			>> e${EMULATION_NAME}.c
fi
echo '  ; else return'					>> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.x			>> e${EMULATION_NAME}.c
echo '; }'						>> e${EMULATION_NAME}.c

fragment <<EOF


struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
  gld_${EMULATION_NAME}_before_parse,
  syslib_default,
  hll_default,
  gld_${EMULATION_NAME}_after_parse,
  gld_${EMULATION_NAME}_after_open,
  after_allocation_default,
  set_output_arch_default,
  ldemul_default_target,
  gld_${EMULATION_NAME}_before_allocation,
  gld_${EMULATION_NAME}_get_script,
  "${EMULATION_NAME}",
  "${OUTPUT_FORMAT}",
  gld_${EMULATION_NAME}_finish,
  NULL, /* Create output section statements.  */
  gld_${EMULATION_NAME}_open_dynamic_archive,
  gld_${EMULATION_NAME}_place_orphan,
  gld_${EMULATION_NAME}_set_symbols,
  NULL, /* parse_args */
  gld${EMULATION_NAME}_add_options,
  gld${EMULATION_NAME}_handle_option,
  gld_${EMULATION_NAME}_unrecognized_file,
  gld_${EMULATION_NAME}_list_options,
  gld_${EMULATION_NAME}_recognized_file,
  gld_${EMULATION_NAME}_find_potential_libraries,
  NULL	/* new_vers_pattern.  */
};
EOF