path: root/ld/emultempl/pe.em

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
(echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
cat >>e${EMULATION_NAME}.c <<EOF
/* This file is part of GLD, the Gnu Linker.
   Copyright 1995, 96, 97, 98, 1999 Free Software Foundation, Inc.

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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* For WINDOWS_NT */
/* The original file generated returned different default scripts depending
   on whether certain switches were set, but these switches pertain to the
   Linux system and that particular version of coff.  In the NT case, we
   only determine if the subsystem is console or windows in order to select
   the correct entry point by default. */ 
  
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "getopt.h"
#include "libiberty.h"
#include "ld.h"
#include "ldmain.h"
#include "ldgram.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldemul.h"
#include "ldlex.h"
#include "ldmisc.h"
#include "ldctor.h"
#include "ldfile.h"
#include "coff/internal.h"
#include "../bfd/libcoff.h"
#include "../bfd/libbfd.h"
#include "deffile.h"

#define TARGET_IS_${EMULATION_NAME}

#if defined(TARGET_IS_i386pe)
#define DLL_SUPPORT
#endif

#define	PE_DEF_SUBSYSTEM		3

#ifdef TARGET_IS_arm_epoc_pe
#define bfd_arm_pe_allocate_interworking_sections \
	bfd_arm_epoc_pe_allocate_interworking_sections
#define bfd_arm_pe_get_bfd_for_interworking \
	bfd_arm_epoc_pe_get_bfd_for_interworking
#define bfd_arm_pe_process_before_allocation \
	bfd_arm_epoc_pe_process_before_allocation
#endif

static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void));
static void gld_${EMULATION_NAME}_after_open PARAMS ((void));
static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
static void gld_${EMULATION_NAME}_after_parse PARAMS ((void));
static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void));
static boolean gld_${EMULATION_NAME}_place_orphan
  PARAMS ((lang_input_statement_type *, asection *));
static void gld${EMULATION_NAME}_place_section
  PARAMS ((lang_statement_union_type *));
static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *));
static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
static void gld_${EMULATION_NAME}_finish PARAMS ((void));

static struct internal_extra_pe_aouthdr pe;
static int dll;
static int support_old_code = 0;
static char * thumb_entry_symbol = NULL;
extern def_file *pe_def_file;
static lang_assignment_statement_type *image_base_statement = 0;

static char *pe_out_def_filename = 0;
extern int pe_dll_export_everything;
extern int pe_dll_kill_ats;
extern int pe_dll_stdcall_aliases;
static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */
static char *pe_implib_filename = 0;

extern const char *output_filename;

static void
gld_${EMULATION_NAME}_before_parse()
{
  output_filename = "a.exe";
  ldfile_output_architecture = bfd_arch_${ARCH};
#ifdef DLL_SUPPORT
  config.has_shared = 1;
#endif
}

/* PE format extra command line options.  */

/* Used for setting flags in the PE header. */
#define OPTION_BASE_FILE		(300  + 1)
#define OPTION_DLL			(OPTION_BASE_FILE + 1)
#define OPTION_FILE_ALIGNMENT		(OPTION_DLL + 1)
#define OPTION_IMAGE_BASE		(OPTION_FILE_ALIGNMENT + 1)
#define OPTION_MAJOR_IMAGE_VERSION	(OPTION_IMAGE_BASE + 1)
#define OPTION_MAJOR_OS_VERSION		(OPTION_MAJOR_IMAGE_VERSION + 1)
#define OPTION_MAJOR_SUBSYSTEM_VERSION	(OPTION_MAJOR_OS_VERSION + 1)
#define OPTION_MINOR_IMAGE_VERSION	(OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
#define OPTION_MINOR_OS_VERSION		(OPTION_MINOR_IMAGE_VERSION + 1)
#define OPTION_MINOR_SUBSYSTEM_VERSION	(OPTION_MINOR_OS_VERSION + 1)
#define OPTION_SECTION_ALIGNMENT	(OPTION_MINOR_SUBSYSTEM_VERSION + 1)
#define OPTION_STACK                    (OPTION_SECTION_ALIGNMENT + 1)
#define OPTION_SUBSYSTEM                (OPTION_STACK + 1)
#define OPTION_HEAP			(OPTION_SUBSYSTEM + 1)
#define OPTION_SUPPORT_OLD_CODE		(OPTION_HEAP + 1)
#define OPTION_OUT_DEF			(OPTION_SUPPORT_OLD_CODE + 1)
#define OPTION_EXPORT_ALL		(OPTION_OUT_DEF + 1)
#define OPTION_EXCLUDE_SYMBOLS		(OPTION_EXPORT_ALL + 1)
#define OPTION_KILL_ATS			(OPTION_EXCLUDE_SYMBOLS + 1)
#define OPTION_STDCALL_ALIASES		(OPTION_KILL_ATS + 1)
#define OPTION_ENABLE_STDCALL_FIXUP	(OPTION_STDCALL_ALIASES + 1)
#define OPTION_DISABLE_STDCALL_FIXUP	(OPTION_ENABLE_STDCALL_FIXUP + 1)
#define OPTION_IMPLIB_FILENAME		(OPTION_DISABLE_STDCALL_FIXUP + 1)
#define OPTION_THUMB_ENTRY		(OPTION_IMPLIB_FILENAME + 1)

static struct option longopts[] =
{
  /* 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},
  {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
#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},
  {"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},
#endif
  {NULL, no_argument, NULL, 0}
};


/* 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;
  int value;
  char *symbol;
  int inited;
} definfo;

#define D(field,symbol,def)  {&pe.field,sizeof(pe.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__"},
  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__", 1),
  D(MinorImageVersion,"__minor_image_version__", 0),
  D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
  D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
  D(Subsystem,"__subsystem__", PE_DEF_SUBSYSTEM),
  D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000),
  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),
  { NULL, 0, 0, NULL, 0 }
};

static void
gld_${EMULATION_NAME}_list_options (file)
     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"));
  fprintf (file, _("  --thumb-entry=<symbol>             Set the entry point to be Thumb <symbol>\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, _("  --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"));
#endif
}

static void
set_pe_name (name, val)
     char *name;
     long 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;
	  return;
	}
    }
  abort();
}


static void
set_pe_subsystem ()
{
  const char *sver;
  int len;
  int i;
  static const struct 
    {
      const char *name;
      const int value;
      const char *entry;
    }
  v[] =
    {
      { "native", 1, "_NtProcessStartup" },
      { "windows", 2, "_WinMainCRTStartup" },
      { "console", 3, "_mainCRTStartup" },
#if 0
      /* The Microsoft linker does not recognize this.  */
      { "os2", 5, "" },
#endif
      { "posix", 7, "___PosixProcessStartup"},
      { 0, 0, 0 }
    };

  sver = strchr (optarg, ':');
  if (sver == NULL)
    len = strlen (optarg);
  else
    {
      char *end;

      len = sver - optarg;
      set_pe_name ("__major_subsystem_version__",
		   strtoul (sver + 1, &end, 0));
      if (*end == '.')
	set_pe_name ("__minor_subsystem_version__",
		     strtoul (end + 1, &end, 0));
      if (*end != '\0')
	einfo (_("%P: warning: bad version number in -subsystem option\n"));
    }

  for (i = 0; v[i].name; i++)
    {
      if (strncmp (optarg, v[i].name, len) == 0
	  && v[i].name[len] == '\0')
	{
	  set_pe_name ("__subsystem__", v[i].value);

	  lang_add_entry (v[i].entry, 1);

	  return;
	}
    }
  
  einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
}



static void
set_pe_value (name)
     char *name;
     
{
  char *end;
  
  set_pe_name (name,  strtoul (optarg, &end, 0));
  
  if (end == optarg)
    einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);

  optarg = end;
}

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



static int
gld_${EMULATION_NAME}_parse_args(argc, argv)
     int argc;
     char **argv;
{
  int longind;
  int optc;
  int prevoptind = optind;
  int prevopterr = opterr;
  int wanterror;
  static int lastoptind = -1;

  if (lastoptind != optind)
    opterr = 0;
  wanterror = opterr;

  lastoptind = optind;

  optc = getopt_long_only (argc, argv, "-", longopts, &longind);
  opterr = prevopterr;

  switch (optc)
    {
    default:
      if (wanterror)
	xexit (1);
      optind =  prevoptind;
      return 0;

    case OPTION_BASE_FILE:
      link_info.base_file = (PTR) 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_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
      break;
    case OPTION_STACK: 
      set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
      break;
    case OPTION_SUBSYSTEM:
      set_pe_subsystem ();
      break;
    case OPTION_MAJOR_OS_VERSION:
      set_pe_value ("__major_os_version__");
      break;
    case OPTION_MINOR_OS_VERSION:
      set_pe_value ("__minor_os_version__");
      break;
    case OPTION_MAJOR_SUBSYSTEM_VERSION:
      set_pe_value ("__major_subsystem_version__");
      break;
    case OPTION_MINOR_SUBSYSTEM_VERSION:
      set_pe_value ("__minor_subsystem_version__");
      break;
    case OPTION_MAJOR_IMAGE_VERSION:
      set_pe_value ("__major_image_version__");
      break;
    case OPTION_MINOR_IMAGE_VERSION:
      set_pe_value ("__minor_image_version__");
      break;
    case OPTION_FILE_ALIGNMENT:
      set_pe_value ("__file_alignment__");
      break;
    case OPTION_SECTION_ALIGNMENT:
      set_pe_value ("__section_alignment__");
      break;
    case OPTION_DLL:
      set_pe_name ("__dll__", 1);
      break;
    case OPTION_IMAGE_BASE:
      set_pe_value ("__image_base__");
      break;
    case OPTION_SUPPORT_OLD_CODE:
      support_old_code = 1;
      break;
    case OPTION_THUMB_ENTRY:
      thumb_entry_symbol = optarg;
      break;
#ifdef DLL_SUPPORT
    case OPTION_OUT_DEF:
      pe_out_def_filename = xstrdup (optarg);
      break;
    case OPTION_EXPORT_ALL:
      pe_dll_export_everything = 1;
      break;
    case OPTION_EXCLUDE_SYMBOLS:
      pe_dll_add_excludes (optarg);
      break;
    case OPTION_KILL_ATS:
      pe_dll_kill_ats = 1;
      break;
    case OPTION_STDCALL_ALIASES:
      pe_dll_stdcall_aliases = 1;
      break;
    case OPTION_ENABLE_STDCALL_FIXUP:
      pe_enable_stdcall_fixup = 1;
      break;
    case OPTION_DISABLE_STDCALL_FIXUP:
      pe_enable_stdcall_fixup = 0;
      break;
    case OPTION_IMPLIB_FILENAME:
      pe_implib_filename = xstrdup (optarg);
      break;
#endif
    }
  return 1;
}

/* Assign values to the special symbols before the linker script is
   read.  */

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

  if (!init[IMAGEBASEOFF].inited)
    {
      if (link_info.relocateable)
	init[IMAGEBASEOFF].value = 0;
      else if (init[DLLOFF].value || link_info.shared)
	init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
      else
	init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
    }

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

  /* Glue the assignments into the abs section */
  save = stat_ptr;

  stat_ptr = &(abs_output_section->children);

  for (j = 0; init[j].ptr; j++)
    {
      long 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 = val;
      else if (init[j].size == sizeof(int))
	*(int *)init[j].ptr = val;
      else if (init[j].size == sizeof(long))
	*(long *)init[j].ptr = 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. */
  stat_ptr = save;
  
  if (pe.FileAlignment >
      pe.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 ()
{
  /* 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.relocateable && entry_symbol != NULL)
    ldlang_add_undef (entry_symbol);
}

static struct bfd_link_hash_entry *pe_undef_found_sym;

static boolean
pe_undef_cdecl_match (h, string)
  struct bfd_link_hash_entry *h;
  PTR string;
{
  int sl = strlen (string);
  if (h->type == bfd_link_hash_defined
      && strncmp (h->root.string, string, sl) == 0
      && h->root.string[sl] == '@')
  {
    pe_undef_found_sym = h;
    return false;
  }
  return true;
}

static void
pe_fixup_stdcalls ()
{
  static int gave_warning_message = 0;
  struct bfd_link_hash_entry *undef, *sym;
  char *at;
  for (undef = link_info.hash->undefs; undef; undef=undef->next)
    if (undef->type == bfd_link_hash_undefined)
    {
      at = strchr (undef->root.string, '@');
      if (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);
	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 (pe_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 */
	pe_undef_found_sym = 0;
	bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
				(PTR) undef->root.string);
	sym = pe_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 (pe_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 void
gld_${EMULATION_NAME}_after_open ()
{
  /* 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 (output_bfd)->pe)
    einfo (_("%F%P: PE operations on non PE file.\n"));

  pe_data (output_bfd)->pe_opthdr = pe;
  pe_data (output_bfd)->dll = init[DLLOFF].value;

#ifdef DLL_SUPPORT
  if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
    pe_fixup_stdcalls ();

  pe_process_import_defs(output_bfd, &link_info);
  if (link_info.shared)
    pe_dll_build_sections (output_bfd, &link_info);
#endif

#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
  if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
    {
      /* The arm backend needs special fields in the output hash structure.
	 These will only be created if the output format is an arm format,
	 hence we do not support linking and changing output formats at the
	 same time.  Use a link followed by objcopy to change output formats.  */
      einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
      return;
    }
  {
    /* Find a BFD that can hold the interworking stubs.  */
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
	  break;
      }
  }
#endif

  {
    static int sequence = 0;
    int is_ms_arch;
    bfd *cur_arch = 0, *elt;
    lang_input_statement_type *is2;
    /* 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)
	  {
	    bfd *arch = is->the_bfd->my_archive;
	    if (cur_arch != arch)
	      {
		cur_arch = arch;
		is_ms_arch = 1;
		for (is2 = is;
		     is2 && is2->the_bfd->my_archive == arch;
		     is2 = (lang_input_statement_type *)is2->next)
		  {
		    if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
		      is_ms_arch = 0;
		  }
	      }

	    if (is_ms_arch)
	      {
		int idata2 = 0, i, 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 = bfd_alloc (is->the_bfd,
				      strlen (is->the_bfd->filename)+2);
		sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
		is->the_bfd->filename = new_name;

		new_name = bfd_alloc(is->the_bfd, strlen(is->filename)+2);
		sprintf (new_name, "%s.%c", is->filename, seq);
		is->filename = new_name;
	      }
	  }
      }
  }
}

static void  
gld_${EMULATION_NAME}_before_allocation()
{
#ifdef TARGET_IS_ppcpe
  /* Here we rummage through the found bfds to collect toc information */
  {
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (!ppc_process_before_allocation (is->the_bfd, &link_info))
	  {
	    /* xgettext:c-format */
	    einfo (_("Errors encountered processing file %s\n"), is->filename);
	  }
      }
  }

  /* We have seen it all. Allocate it, and carry on */
  ppc_allocate_toc_section (&link_info);
#endif /* TARGET_IS_ppcpe */

#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
  /* FIXME: we should be able to set the size of the interworking stub
     section.

     Here we rummage through the found bfds to collect glue
     information.  FIXME: should this be based on a command line
     option?  krk@cygnus.com */
  {
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (! bfd_arm_pe_process_before_allocation
	    (is->the_bfd, & link_info, support_old_code))
	  {
	    /* xgettext:c-format */
	    einfo (_("Errors encountered processing file %s for interworking"),
		   is->filename);
	  }
      }
  }

  /* We have seen it all. Allocate it, and carry on */
  bfd_arm_pe_allocate_interworking_sections (& link_info);
#endif /* TARGET_IS_armpe */
}


/* 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;
}

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

  if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
  {
    if (pe_def_file == 0)
      pe_def_file = def_file_empty ();
    def_file_parse (entry->filename, pe_def_file);
    if (pe_def_file)
    {
      int i, buflen=0, len;
      char *buf;
      for (i=0; i<pe_def_file->num_exports; i++)
	{
	  len = strlen(pe_def_file->exports[i].internal_name);
	  if (buflen < len+2)
	    buflen = len+2;
	}
      buf = (char *) xmalloc (buflen);
      for (i=0; i<pe_def_file->num_exports; i++)
	{
	  struct bfd_link_hash_entry *h;
	  sprintf(buf, "_%s", pe_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, pe_def_file); */
      if (pe_def_file->is_dll == 1)
	link_info.shared = 1;

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

#if 0
      /* Not sure if these *should* be set */
      if (pe_def_file->version_major != -1)
      {
	pe.MajorImageVersion = pe_def_file->version_major;
	pe.MinorImageVersion = pe_def_file->version_minor;
      }
#endif
      if (pe_def_file->stack_reserve != -1
	  && ! saw_option ("__size_of_stack_reserve__"))
      {
	pe.SizeOfStackReserve = pe_def_file->stack_reserve;
	if (pe_def_file->stack_commit != -1)
	  pe.SizeOfStackCommit = pe_def_file->stack_commit;
      }
      if (pe_def_file->heap_reserve != -1
	  && ! saw_option ("__size_of_heap_reserve__"))
      {
	pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
	if (pe_def_file->heap_commit != -1)
	  pe.SizeOfHeapCommit = pe_def_file->heap_commit;
      }
      return true;
    }
  }
#endif
  return false;
  
}

static boolean
gld_${EMULATION_NAME}_recognized_file(entry)
  lang_input_statement_type *entry;
{
#ifdef DLL_SUPPORT
#ifdef TARGET_IS_i386pe
  pe_dll_id_target ("pei-i386");
#endif
  if (bfd_get_format (entry->the_bfd) == bfd_object)
    {
      const char *ext = entry->filename + strlen (entry->filename) - 4;
      if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
	return pe_implied_import_dll (entry->filename);
    }
#endif
  return false;
}

static void
gld_${EMULATION_NAME}_finish ()
{
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
  struct bfd_link_hash_entry * h;

  if (thumb_entry_symbol != NULL)
    {
      h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
      
      if (h != (struct bfd_link_hash_entry *) NULL
	  && (h->type == bfd_link_hash_defined
	      || h->type == bfd_link_hash_defweak)
	  && h->u.def.section->output_section != NULL)
	{
	  static char buffer[32];
	  bfd_vma val;
	  
	  /* Special procesing is required for a Thumb entry symbol.  The
	     bottom bit of its address must be set.  */
	  val = (h->u.def.value
		 + bfd_get_section_vma (output_bfd,
					h->u.def.section->output_section)
		 + h->u.def.section->output_offset);
	  
	  val |= 1;
	  
	  /* Now convert this value into a string and store it in entry_symbol
	     where the lang_finish() function will pick it up.  */
	  buffer[0] = '0';
	  buffer[1] = 'x';
	  
	  sprintf_vma (buffer + 2, val);
	  
	  if (entry_symbol != NULL && entry_from_cmdline)
	    einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
		   thumb_entry_symbol, entry_symbol);
	  entry_symbol = buffer;
	}
      else
	einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
    }
#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */

#ifdef DLL_SUPPORT
  if (link_info.shared)
    {
      pe_dll_fill_sections (output_bfd, &link_info);
      if (pe_implib_filename)
	pe_dll_generate_implib (pe_def_file, pe_implib_filename);
    }
  if (pe_out_def_filename)
    pe_dll_generate_def_file (pe_out_def_filename);
#endif
}


/* 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 asection *hold_section;
static char *hold_section_name;
static lang_output_section_statement_type *hold_use;
static lang_output_section_statement_type *hold_text;
static lang_output_section_statement_type *hold_rdata;
static lang_output_section_statement_type *hold_data;
static lang_output_section_statement_type *hold_bss;

/* Place an orphan section.  We use this to put random SHF_ALLOC
   sections in the right segment.  */

/*ARGSUSED*/
static boolean
gld_${EMULATION_NAME}_place_orphan (file, s)
     lang_input_statement_type *file;
     asection *s;
{
  const char *secname;
  char *dollar;

  if ((s->flags & SEC_ALLOC) == 0)
    return false;

  secname = bfd_get_section_name (s->owner, s);

  /* Look through the script to see where to place this section.  */

  hold_section = s;

  hold_section_name = xstrdup (secname);
  dollar = strchr (hold_section_name, '$');
  if (dollar != NULL)
    *dollar = '\0';

  hold_use = NULL;
  lang_for_each_statement (gld${EMULATION_NAME}_place_section);

  if (hold_use == NULL)
    {
      lang_output_section_statement_type *place;
      char *outsecname;
      asection *snew, **pps;
      lang_statement_list_type *old;
      lang_statement_list_type add;
      etree_type *address;

      /* 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_HAS_CONTENTS) == 0
	  && hold_bss != NULL)
	place = hold_bss;
      else if ((s->flags & SEC_READONLY) == 0
	       && hold_data != NULL)
	place = hold_data;
      else if ((s->flags & SEC_CODE) == 0
	       && (s->flags & SEC_READONLY) != 0
	       && hold_rdata != NULL)
	place = hold_rdata;
      else if ((s->flags & SEC_READONLY) != 0
	       && hold_text != NULL)
	place = hold_text;

      /* Choose a unique name for the section.  This will be needed if
	 the same section name appears in the input file with
	 different loadable or allocateable characteristics.  */
      outsecname = xstrdup (hold_section_name);
      if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
	{
	  unsigned int len;
	  char *newname;
	  unsigned int i;

	  len = strlen (outsecname);
	  newname = xmalloc (len + 5);
	  strcpy (newname, outsecname);
	  i = 0;
	  do
	    {
	      sprintf (newname + len, "%d", i);
	      ++i;
	    }
	  while (bfd_get_section_by_name (output_bfd, newname) != NULL);

	  free (outsecname);
	  outsecname = newname;
	}

      /* We don't want to free OUTSECNAME, as it may get attached to
	 the output section statement.  */

      /* Create the section in the output file, and put it in the
	 right place.  This shuffling is to make the output file look
	 neater.  */
      snew = bfd_make_section (output_bfd, outsecname);
      if (snew == NULL)
	einfo ("%P%F: output format %s cannot represent section called %s\n",
	       output_bfd->xvec->name, outsecname);
      if (place != NULL && place->bfd_section != NULL)
	{
	  for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
	    ;
	  *pps = snew->next;
	  snew->next = place->bfd_section->next;
	  place->bfd_section->next = snew;
	}

      /* Start building a list of statements for this section.  */
      old = stat_ptr;
      stat_ptr = &add;
      lang_list_init (stat_ptr);

      if (link_info.relocateable)
	address = NULL;
      else
	{
	  /* All sections in an executable must be aligned to a page
	     boundary.  */
	  address = exp_unop (ALIGN_K,
			      exp_nameop (NAME, "__section_alignment__"));
	}

      lang_enter_output_section_statement (outsecname, address, 0,
					   (bfd_vma) 0,
					   (etree_type *) NULL,
					   (etree_type *) NULL,
					   (etree_type *) NULL);

      hold_use = lang_output_section_statement_lookup (outsecname);

      lang_leave_output_section_statement
	((bfd_vma) 0, "*default*",
	 (struct lang_output_section_phdr_list *) NULL);

      /* Now stick the new statement list right after PLACE.  */
      if (place != NULL)
	{
	  *add.tail = place->header.next;
	  place->header.next = add.head;
	}

      stat_ptr = old;
    }

  if (dollar == NULL)
    wild_doit (&hold_use->children, s, hold_use, file);
  else
    {
      lang_statement_union_type **pl;
      boolean found_dollar;
      lang_statement_list_type list;

      /* The section name has a '$'.  Sort it with the other '$'
         sections.  */

      found_dollar = false;
      for (pl = &hold_use->children.head; *pl != NULL; pl = &(*pl)->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->ifile->the_bfd, ls->section);
	  if (strchr (lname, '$') == NULL)
	    {
	      if (found_dollar)
		break;
	    }
	  else
	    {
	      found_dollar = true;
	      if (strcmp (secname, lname) < 0)
		break;
	    }
	}

      lang_list_init (&list);
      wild_doit (&list, s, hold_use, file);
      if (list.head != NULL)
	{
	  ASSERT (list.head->next == NULL);
	  list.head->next = *pl;
	  *pl = list.head;
	}
    }

  free (hold_section_name);

  return true;
}

static void
gld${EMULATION_NAME}_place_section (s)
     lang_statement_union_type *s;
{
  lang_output_section_statement_type *os;

  if (s->header.type != lang_output_section_statement_enum)
    return;

  os = &s->output_section_statement;

  if (strcmp (os->name, hold_section_name) == 0
      && os->bfd_section != NULL
      && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC))
	  == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC))))
    hold_use = os;

  if (strcmp (os->name, ".text") == 0)
    hold_text = os;
  else if (strcmp (os->name, ".rdata") == 0)
    hold_rdata = os;
  else if (strcmp (os->name, ".data") == 0)
    hold_data = os;
  else if (strcmp (os->name, ".bss") == 0)
    hold_bss = os;
}

static char *
gld_${EMULATION_NAME}_get_script(isfile)
     int *isfile;
EOF
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
sc="-f ${srcdir}/emultempl/stringify.sed"

cat >>e${EMULATION_NAME}.c <<EOF
{			     
  *isfile = 0;

  if (link_info.relocateable == true && config.build_constructors == true)
    return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu                     >> e${EMULATION_NAME}.c
echo '  ; else if (link_info.relocateable == true) return' >> e${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${EMULATION_NAME}.c
echo '  ; else return'                                     >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.x                      >> e${EMULATION_NAME}.c
echo '; }'                                                 >> e${EMULATION_NAME}.c

cat >>e${EMULATION_NAME}.c <<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_${EMULATION_NAME}_finish, /* finish */
  NULL, /* create output section statements */
  NULL, /* open dynamic archive */
  gld_${EMULATION_NAME}_place_orphan,
  gld_${EMULATION_NAME}_set_symbols,
  gld_${EMULATION_NAME}_parse_args,
  gld_${EMULATION_NAME}_unrecognized_file,
  gld_${EMULATION_NAME}_list_options,
  gld_${EMULATION_NAME}_recognized_file
};
EOF