ld/emultempl/pep.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 if [ -z "$MACHINE" ]; then
   4   OUTPUT_ARCH=${ARCH}
   5 else
   6   OUTPUT_ARCH=${ARCH}:${MACHINE}
   7 fi
   8
   9 case ${target} in
  10   *-*-cygwin*)
  11     move_default_addr_high=1
  12     cygwin_behavior=1
  13     ;;
  14   *)
  15     move_default_addr_high=0;
  16     cygwin_behavior=0;
  17     ;;
  18 esac
  19
  20 rm -f e${EMULATION_NAME}.c
  21 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
  22 fragment <<EOF
  23 /* Copyright (C) 2006-2022 Free Software Foundation, Inc.
  24    Written by Kai Tietz, OneVision Software GmbH&CoKg.
  25
  26    This file is part of the GNU Binutils.
  27
  28    This program is free software; you can redistribute it and/or modify
  29    it under the terms of the GNU General Public License as published by
  30    the Free Software Foundation; either version 3 of the License, or
  31    (at your option) any later version.
  32
  33    This program is distributed in the hope that it will be useful,
  34    but WITHOUT ANY WARRANTY; without even the implied warranty of
  35    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  36    GNU General Public License for more details.
  37
  38    You should have received a copy of the GNU General Public License
  39    along with this program; if not, write to the Free Software
  40    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  41    MA 02110-1301, USA.  */
  42
  43
  44 /* For WINDOWS_XP64 and higher */
  45 /* Based on pe.em, but modified for 64 bit support.  */
  46
  47 #define TARGET_IS_${EMULATION_NAME}
  48
  49 #define COFF_IMAGE_WITH_PE
  50 #define COFF_WITH_PE
  51 #ifdef TARGET_IS_aarch64pe
  52 #define COFF_WITH_peAArch64
  53 #elif defined (TARGET_IS_i386pep)
  54 #define COFF_WITH_pex64
  55 #endif
  56
  57 #include "sysdep.h"
  58 #include "bfd.h"
  59 #include "bfdlink.h"
  60 #include "ctf-api.h"
  61 #include "getopt.h"
  62 #include "libiberty.h"
  63 #include "filenames.h"
  64 #include "ld.h"
  65 #include "ldmain.h"
  66 #include "ldexp.h"
  67 #include "ldlang.h"
  68 #include "ldfile.h"
  69 #include "ldemul.h"
  70 #include <ldgram.h>
  71 #include "ldlex.h"
  72 #include "ldmisc.h"
  73 #include "ldctor.h"
  74 #include "ldbuildid.h"
  75 #include "coff/internal.h"
  76
  77 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
  78    header in generic PE code.  */
  79 #ifdef TARGET_IS_i386pep
  80 # include "coff/x86_64.h"
  81 #elif defined TARGET_IS_aarch64pe
  82 # include "coff/aarch64.h"
  83 #endif
  84 #include "coff/pe.h"
  85
  86 /* FIXME: These are BFD internal header files, and we should not be
  87    using it here.  */
  88 #include "../bfd/libcoff.h"
  89 #include "../bfd/libpei.h"
  90
  91 #undef  AOUTSZ
  92 #define AOUTSZ          PEPAOUTSZ
  93 #define PEAOUTHDR       PEPAOUTHDR
  94
  95 #include "deffile.h"
  96 #include "pep-dll.h"
  97 #include "safe-ctype.h"
  98
  99 /* Permit the emulation parameters to override the default section
 100    alignment by setting OVERRIDE_SECTION_ALIGNMENT.  FIXME: This makes
 101    it seem that include/coff/internal.h should not define
 102    PE_DEF_SECTION_ALIGNMENT.  */
 103 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
 104 #undef  PE_DEF_SECTION_ALIGNMENT
 105 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
 106 #endif
 107
 108 #ifdef TARGET_IS_i386pep
 109 #define DLL_SUPPORT
 110 #endif
 111
 112 #define DEFAULT_DLL_CHARACTERISTICS     (${cygwin_behavior} ? 0 : \
 113                                            IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE \
 114                                          | IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA \
 115                                          | IMAGE_DLL_CHARACTERISTICS_NX_COMPAT)
 116
 117 #if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
 118 #define PE_DEF_SUBSYSTEM                3
 119 #undef NT_EXE_IMAGE_BASE
 120 #define NT_EXE_IMAGE_BASE \
 121   ((bfd_vma) (${move_default_addr_high} ? 0x100400000LL \
 122                                         : 0x140000000LL))
 123 #undef NT_DLL_IMAGE_BASE
 124 #define NT_DLL_IMAGE_BASE \
 125   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 126                                         : 0x180000000LL))
 127 #undef NT_DLL_AUTO_IMAGE_BASE
 128 #define NT_DLL_AUTO_IMAGE_BASE \
 129   ((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
 130                                         : 0x1C0000000LL))
 131 #undef NT_DLL_AUTO_IMAGE_MASK
 132 #define NT_DLL_AUTO_IMAGE_MASK \
 133   ((bfd_vma) (${move_default_addr_high} ? 0x1ffff0000LL \
 134                                         : 0x1ffff0000LL))
 135 #else
 136 #undef  NT_EXE_IMAGE_BASE
 137 #define NT_EXE_IMAGE_BASE \
 138   ((bfd_vma) (${move_default_addr_high} ? 0x100010000LL \
 139                                         : 0x10000LL))
 140 #undef NT_DLL_IMAGE_BASE
 141 #define NT_DLL_IMAGE_BASE \
 142   ((bfd_vma) (${move_default_addr_high} ? 0x110000000LL \
 143                                         : 0x10000000LL))
 144 #undef NT_DLL_AUTO_IMAGE_BASE
 145 #define NT_DLL_AUTO_IMAGE_BASE \
 146   ((bfd_vma) (${move_default_addr_high} ? 0x120000000LL \
 147                                         : 0x61300000LL))
 148 #undef NT_DLL_AUTO_IMAGE_MASK
 149 #define NT_DLL_AUTO_IMAGE_MASK \
 150   ((bfd_vma) (${move_default_addr_high} ? 0x0ffff0000LL \
 151                                         : 0x0ffc0000LL))
 152 #undef  PE_DEF_SECTION_ALIGNMENT
 153 #define PE_DEF_SUBSYSTEM                2
 154 #undef  PE_DEF_FILE_ALIGNMENT
 155 #define PE_DEF_FILE_ALIGNMENT           0x00000200
 156 #define PE_DEF_SECTION_ALIGNMENT        0x00000400
 157 #endif
 158
 159 static struct internal_extra_pe_aouthdr pep;
 160 static int dll;
 161 static int pep_subsystem = ${SUBSYSTEM};
 162 static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
 163 static int support_old_code = 0;
 164 static lang_assignment_statement_type *image_base_statement = 0;
 165 static unsigned short pe_dll_characteristics = DEFAULT_DLL_CHARACTERISTICS;
 166 static bool insert_timestamp = true;
 167 static const char *emit_build_id;
 168
 169 #ifdef DLL_SUPPORT
 170 static int    pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default).  */
 171 static char * pep_out_def_filename = NULL;
 172 static int    pep_enable_auto_image_base = 0;
 173 static char * pep_dll_search_prefix = NULL;
 174 #endif
 175
 176 extern const char *output_filename;
 177
 178 static int
 179 is_underscoring (void)
 180 {
 181   int u = 0;
 182   if (pep_leading_underscore != -1)
 183     return pep_leading_underscore;
 184   if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
 185     bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
 186
 187   if (u == -1)
 188     abort ();
 189   pep_leading_underscore = (u != 0 ? 1 : 0);
 190   return pep_leading_underscore;
 191 }
 192
 193 /* A case insensitive comparison, regardless of the host platform, used for
 194    comparing file extensions.  */
 195 static int
 196 fileext_cmp (const char *s1, const char *s2)
 197 {
 198   for (;;)
 199     {
 200       int c1 = TOLOWER (*s1++);
 201       int c2 = *s2++; /* Assumed to be lower case from the caller.  */
 202
 203       if (c1 != c2)
 204         return (c1 - c2);
 205
 206       if (c1 == '\0')
 207         return 0;
 208     }
 209 }
 210
 211 static void
 212 gld${EMULATION_NAME}_before_parse (void)
 213 {
 214   is_underscoring ();
 215   ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
 216   output_filename = "${EXECUTABLE_NAME:-a.exe}";
 217 #ifdef DLL_SUPPORT
 218   input_flags.dynamic = true;
 219   config.has_shared = 1;
 220   link_info.pei386_auto_import = 1;
 221   link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2.  */
 222 #endif
 223 }
 224 \f
 225 /* PE format extra command line options.  */
 226
 227 /* Used for setting flags in the PE header.  */
 228 enum options
 229 {
 230   OPTION_BASE_FILE = 300 + 1,
 231   OPTION_DLL,
 232   OPTION_FILE_ALIGNMENT,
 233   OPTION_IMAGE_BASE,
 234   OPTION_MAJOR_IMAGE_VERSION,
 235   OPTION_MAJOR_OS_VERSION,
 236   OPTION_MAJOR_SUBSYSTEM_VERSION,
 237   OPTION_MINOR_IMAGE_VERSION,
 238   OPTION_MINOR_OS_VERSION,
 239   OPTION_MINOR_SUBSYSTEM_VERSION,
 240   OPTION_SECTION_ALIGNMENT,
 241   OPTION_STACK,
 242   OPTION_SUBSYSTEM,
 243   OPTION_HEAP,
 244   OPTION_SUPPORT_OLD_CODE,
 245   OPTION_OUT_DEF,
 246   OPTION_EXPORT_ALL,
 247   OPTION_EXCLUDE_SYMBOLS,
 248   OPTION_EXCLUDE_ALL_SYMBOLS,
 249   OPTION_KILL_ATS,
 250   OPTION_STDCALL_ALIASES,
 251   OPTION_ENABLE_STDCALL_FIXUP,
 252   OPTION_DISABLE_STDCALL_FIXUP,
 253   OPTION_WARN_DUPLICATE_EXPORTS,
 254   OPTION_IMP_COMPAT,
 255   OPTION_ENABLE_AUTO_IMAGE_BASE,
 256   OPTION_DISABLE_AUTO_IMAGE_BASE,
 257   OPTION_DLL_SEARCH_PREFIX,
 258   OPTION_NO_DEFAULT_EXCLUDES,
 259   OPTION_DLL_ENABLE_AUTO_IMPORT,
 260   OPTION_DLL_DISABLE_AUTO_IMPORT,
 261   OPTION_ENABLE_EXTRA_PE_DEBUG,
 262   OPTION_EXCLUDE_LIBS,
 263   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
 264   OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
 265   OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
 266   OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
 267   OPTION_USE_NUL_PREFIXED_IMPORT_TABLES,
 268   OPTION_NO_LEADING_UNDERSCORE,
 269   OPTION_LEADING_UNDERSCORE,
 270   OPTION_ENABLE_LONG_SECTION_NAMES,
 271   OPTION_DISABLE_LONG_SECTION_NAMES,
 272   OPTION_HIGH_ENTROPY_VA,
 273   OPTION_DYNAMIC_BASE,
 274   OPTION_FORCE_INTEGRITY,
 275   OPTION_NX_COMPAT,
 276   OPTION_NO_ISOLATION,
 277   OPTION_NO_SEH,
 278   OPTION_NO_BIND,
 279   OPTION_WDM_DRIVER,
 280   OPTION_INSERT_TIMESTAMP,
 281   OPTION_NO_INSERT_TIMESTAMP,
 282   OPTION_TERMINAL_SERVER_AWARE,
 283   OPTION_BUILD_ID,
 284   OPTION_ENABLE_RELOC_SECTION,
 285   OPTION_DISABLE_RELOC_SECTION,
 286   OPTION_DISABLE_HIGH_ENTROPY_VA,
 287   OPTION_DISABLE_DYNAMIC_BASE,
 288   OPTION_DISABLE_FORCE_INTEGRITY,
 289   OPTION_DISABLE_NX_COMPAT,
 290   OPTION_DISABLE_NO_ISOLATION,
 291   OPTION_DISABLE_NO_SEH,
 292   OPTION_DISABLE_NO_BIND,
 293   OPTION_DISABLE_WDM_DRIVER,
 294   OPTION_DISABLE_TERMINAL_SERVER_AWARE
 295 };
 296
 297 static void
 298 gld${EMULATION_NAME}_add_options
 299   (int ns ATTRIBUTE_UNUSED,
 300    char **shortopts ATTRIBUTE_UNUSED,
 301    int nl,
 302    struct option **longopts,
 303    int nrl ATTRIBUTE_UNUSED,
 304    struct option **really_longopts ATTRIBUTE_UNUSED)
 305 {
 306   static const struct option xtra_long[] =
 307   {
 308     /* PE options */
 309     {"base-file", required_argument, NULL, OPTION_BASE_FILE},
 310     {"dll", no_argument, NULL, OPTION_DLL},
 311     {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
 312     {"heap", required_argument, NULL, OPTION_HEAP},
 313     {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
 314     {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
 315     {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
 316     {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
 317     {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
 318     {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
 319     {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
 320     {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
 321     {"stack", required_argument, NULL, OPTION_STACK},
 322     {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
 323     {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
 324     {"use-nul-prefixed-import-tables", no_argument, NULL,
 325      OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
 326     {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
 327     {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
 328 #ifdef DLL_SUPPORT
 329     /* getopt allows abbreviations, so we do this to stop it
 330        from treating -o as an abbreviation for this option.  */
 331     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 332     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
 333     {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
 334     {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
 335     {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
 336     {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
 337     {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
 338     {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
 339     {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
 340     {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
 341     {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
 342     {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
 343     /* getopt() allows abbreviations, so we do this to stop it from
 344        treating -c as an abbreviation for these --compat-implib.  */
 345     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 346     {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
 347     {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
 348     {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
 349     {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
 350     {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
 351     {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
 352     {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
 353     {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
 354     {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
 355     {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
 356     {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
 357 #endif
 358     {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
 359     {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
 360     {"high-entropy-va", no_argument, NULL, OPTION_HIGH_ENTROPY_VA},
 361     {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
 362     {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
 363     {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
 364     {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
 365     {"no-seh", no_argument, NULL, OPTION_NO_SEH},
 366     {"no-bind", no_argument, NULL, OPTION_NO_BIND},
 367     {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
 368     {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
 369     {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
 370     {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
 371     {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
 372     {"enable-reloc-section", no_argument, NULL, OPTION_ENABLE_RELOC_SECTION},
 373     {"disable-reloc-section", no_argument, NULL, OPTION_DISABLE_RELOC_SECTION},
 374     {"disable-high-entropy-va", no_argument, NULL, OPTION_DISABLE_HIGH_ENTROPY_VA},
 375     {"disable-dynamicbase",no_argument, NULL, OPTION_DISABLE_DYNAMIC_BASE},
 376     {"disable-forceinteg", no_argument, NULL, OPTION_DISABLE_FORCE_INTEGRITY},
 377     {"disable-nxcompat", no_argument, NULL, OPTION_DISABLE_NX_COMPAT},
 378     {"disable-no-isolation", no_argument, NULL, OPTION_DISABLE_NO_ISOLATION},
 379     {"disable-no-seh", no_argument, NULL, OPTION_DISABLE_NO_SEH},
 380     {"disable-no-bind", no_argument, NULL, OPTION_DISABLE_NO_BIND},
 381     {"disable-wdmdriver", no_argument, NULL, OPTION_DISABLE_WDM_DRIVER},
 382     {"disable-tsaware", no_argument, NULL, OPTION_DISABLE_TERMINAL_SERVER_AWARE},
 383     {NULL, no_argument, NULL, 0}
 384   };
 385
 386   *longopts
 387     = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
 388   memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
 389 }
 390
 391 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
 392    parameters which may be input from the command line.  */
 393
 394 typedef struct
 395 {
 396   void *ptr;
 397   int size;
 398   bfd_vma value;
 399   char *symbol;
 400   int inited;
 401   /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
 402      C visible symbols can be prefixed by underscore dependent on target's
 403      settings.  */
 404   bool is_c_symbol;
 405 } definfo;
 406
 407 #define GET_INIT_SYMBOL_NAME(IDX) \
 408   (init[(IDX)].symbol \
 409    + ((!init[(IDX)].is_c_symbol || is_underscoring () == 1) ? 0 : 1))
 410
 411 /* Decorates the C visible symbol by underscore, if target requires.  */
 412 #define U(CSTR) \
 413   ((is_underscoring () == 0) ? CSTR : "_" CSTR)
 414
 415 #define D(field,symbol,def,usc)  {&pep.field, sizeof (pep.field), def, symbol, 0, usc}
 416
 417 static definfo init[] =
 418 {
 419   /* imagebase must be first */
 420 #define IMAGEBASEOFF 0
 421   D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, false),
 422 #define DLLOFF 1
 423   {&dll, sizeof(dll), 0, "__dll__", 0, false},
 424 #define MSIMAGEBASEOFF  2
 425   D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, true),
 426   D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, false),
 427   D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, false),
 428   D(MajorOperatingSystemVersion,"__major_os_version__", 4, false),
 429   D(MinorOperatingSystemVersion,"__minor_os_version__", 0, false),
 430   D(MajorImageVersion,"__major_image_version__", 0, false),
 431   D(MinorImageVersion,"__minor_image_version__", 0, false),
 432   D(MajorSubsystemVersion,"__major_subsystem_version__", 5, false),
 433   D(MinorSubsystemVersion,"__minor_subsystem_version__", 2, false),
 434   D(Subsystem,"__subsystem__", ${SUBSYSTEM}, false),
 435   D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, false),
 436   D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, false),
 437   D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, false),
 438   D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, false),
 439   D(LoaderFlags,"__loader_flags__", 0x0, false),
 440   D(DllCharacteristics, "__dll_characteristics__", DEFAULT_DLL_CHARACTERISTICS, false),
 441   { NULL, 0, 0, NULL, 0, false}
 442 };
 443
 444
 445 static void
 446 gld${EMULATION_NAME}_list_options (FILE *file)
 447 {
 448   fprintf (file, _("  --base_file <basefile>             Generate a base file for relocatable DLLs\n"));
 449   fprintf (file, _("  --dll                              Set image base to the default for DLLs\n"));
 450   fprintf (file, _("  --file-alignment <size>            Set file alignment\n"));
 451   fprintf (file, _("  --heap <size>                      Set initial size of the heap\n"));
 452   fprintf (file, _("  --image-base <address>             Set start address of the executable\n"));
 453   fprintf (file, _("  --major-image-version <number>     Set version number of the executable\n"));
 454   fprintf (file, _("  --major-os-version <number>        Set minimum required OS version\n"));
 455   fprintf (file, _("  --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
 456   fprintf (file, _("  --minor-image-version <number>     Set revision number of the executable\n"));
 457   fprintf (file, _("  --minor-os-version <number>        Set minimum required OS revision\n"));
 458   fprintf (file, _("  --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
 459   fprintf (file, _("  --section-alignment <size>         Set section alignment\n"));
 460   fprintf (file, _("  --stack <size>                     Set size of the initial stack\n"));
 461   fprintf (file, _("  --subsystem <name>[:<version>]     Set required OS subsystem [& version]\n"));
 462   fprintf (file, _("  --support-old-code                 Support interworking with old code\n"));
 463   fprintf (file, _("  --[no-]leading-underscore          Set explicit symbol underscore prefix mode\n"));
 464   fprintf (file, _("  --[no-]insert-timestamp            Use a real timestamp rather than zero (default)\n"));
 465   fprintf (file, _("                                     This makes binaries non-deterministic\n"));
 466 #ifdef DLL_SUPPORT
 467   fprintf (file, _("  --add-stdcall-alias                Export symbols with and without @nn\n"));
 468   fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
 469   fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
 470   fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
 471   fprintf (file, _("  --exclude-all-symbols              Exclude all symbols from automatic export\n"));
 472   fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
 473   fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
 474   fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
 475   fprintf (file, _("                                     export, place into import library instead\n"));
 476   fprintf (file, _("  --export-all-symbols               Automatically export all globals to DLL\n"));
 477   fprintf (file, _("  --kill-at                          Remove @nn from exported symbols\n"));
 478   fprintf (file, _("  --output-def <file>                Generate a .DEF file for the built DLL\n"));
 479   fprintf (file, _("  --warn-duplicate-exports           Warn about duplicate exports\n"));
 480   fprintf (file, _("  --compat-implib                    Create backward compatible import libs;\n\
 481                                        create __imp_<SYMBOL> as well\n"));
 482   fprintf (file, _("  --enable-auto-image-base           Automatically choose image base for DLLs\n\
 483                                        unless user specifies one\n"));
 484   fprintf (file, _("  --disable-auto-image-base          Do not auto-choose image base (default)\n"));
 485   fprintf (file, _("  --dll-search-prefix=<string>       When linking dynamically to a dll without\n\
 486                                        an importlib, use <string><basename>.dll\n\
 487                                        in preference to lib<basename>.dll \n"));
 488   fprintf (file, _("  --enable-auto-import               Do sophisticated linking of _sym to\n\
 489                                        __imp_sym for DATA references\n"));
 490   fprintf (file, _("  --disable-auto-import              Do not auto-import DATA items from DLLs\n"));
 491   fprintf (file, _("  --enable-runtime-pseudo-reloc      Work around auto-import limitations by\n\
 492                                        adding pseudo-relocations resolved at\n\
 493                                        runtime\n"));
 494   fprintf (file, _("  --disable-runtime-pseudo-reloc     Do not add runtime pseudo-relocations for\n\
 495                                        auto-imported DATA\n"));
 496   fprintf (file, _("  --enable-extra-pep-debug            Enable verbose debug output when building\n\
 497                                        or linking to DLLs (esp. auto-import)\n"));
 498   fprintf (file, _("  --enable-long-section-names        Use long COFF section names even in\n\
 499                                        executable image files\n"));
 500   fprintf (file, _("  --disable-long-section-names       Never use long COFF section names, even\n\
 501                                        in object files\n"));
 502   fprintf (file, _("  --[disable-]high-entropy-va        Image is compatible with 64-bit address space\n\
 503                                        layout randomization (ASLR)\n"));
 504   fprintf (file, _("  --[disable-]dynamicbase            Image base address may be relocated using\n\
 505                                        address space layout randomization (ASLR)\n"));
 506   fprintf (file, _("  --enable-reloc-section             Create the base relocation table\n"));
 507   fprintf (file, _("  --disable-reloc-section            Do not create the base relocation table\n"));
 508   fprintf (file, _("  --[disable-]forceinteg             Code integrity checks are enforced\n"));
 509   fprintf (file, _("  --[disable-]nxcompat               Image is compatible with data execution\n\
 510                                        prevention\n"));
 511   fprintf (file, _("  --[disable-]no-isolation           Image understands isolation but do not\n\
 512                                        isolate the image\n"));
 513   fprintf (file, _("  --[disable-]no-seh                 Image does not use SEH; no SE handler may\n\
 514                                        be called in this image\n"));
 515   fprintf (file, _("  --[disable-]no-bind                Do not bind this image\n"));
 516   fprintf (file, _("  --[disable-]wdmdriver              Driver uses the WDM model\n"));
 517   fprintf (file, _("  --[disable-]tsaware                Image is Terminal Server aware\n"));
 518   fprintf (file, _("  --build-id[=STYLE]                 Generate build ID\n"));
 519 #endif
 520 }
 521
 522
 523 static void
 524 set_pep_name (char *name, bfd_vma val)
 525 {
 526   int i;
 527   is_underscoring ();
 528   /* Find the name and set it.  */
 529   for (i = 0; init[i].ptr; i++)
 530     {
 531       if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
 532         {
 533           init[i].value = val;
 534           init[i].inited = 1;
 535           if (strcmp (name,"__image_base__") == 0)
 536             set_pep_name (U ("__ImageBase"), val);
 537           return;
 538         }
 539     }
 540   abort ();
 541 }
 542
 543 static void
 544 set_entry_point (void)
 545 {
 546   const char *entry;
 547   const char *initial_symbol_char;
 548   int i;
 549
 550   static const struct
 551   {
 552     const int value;
 553     const char *entry;
 554   }
 555   v[] =
 556     {
 557       { 1, "NtProcessStartup"  },
 558       { 2, "WinMainCRTStartup" },
 559       { 3, "mainCRTStartup"    },
 560       { 7, "__PosixProcessStartup" },
 561       { 9, "WinMainCRTStartup" },
 562       {14, "mainCRTStartup"    },
 563       { 0, NULL          }
 564     };
 565
 566   /* Entry point name for arbitrary subsystem numbers.  */
 567   static const char default_entry[] = "mainCRTStartup";
 568
 569   if (bfd_link_dll (&link_info) || dll)
 570     {
 571       entry = "DllMainCRTStartup";
 572     }
 573   else
 574     {
 575       for (i = 0; v[i].entry; i++)
 576         if (v[i].value == pep_subsystem)
 577           break;
 578
 579       /* If no match, use the default.  */
 580       if (v[i].entry != NULL)
 581         entry = v[i].entry;
 582       else
 583         entry = default_entry;
 584     }
 585
 586   /* Now we check target's default for getting proper symbol_char.  */
 587   initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
 588
 589   if (*initial_symbol_char != '\0')
 590     {
 591       char *alc_entry;
 592
 593       /* lang_default_entry expects its argument to be permanently
 594          allocated, so we don't free this string.  */
 595       alc_entry = xmalloc (strlen (initial_symbol_char)
 596                            + strlen (entry)
 597                            + 1);
 598       strcpy (alc_entry, initial_symbol_char);
 599       strcat (alc_entry, entry);
 600       entry = alc_entry;
 601     }
 602
 603   lang_default_entry (entry);
 604 }
 605
 606 static void
 607 set_pep_subsystem (void)
 608 {
 609   const char *sver;
 610   char *end;
 611   int len;
 612   int i;
 613   unsigned long temp_subsystem;
 614   static const struct
 615     {
 616       const char *name;
 617       const int value;
 618     }
 619   v[] =
 620     {
 621       { "native",  1 },
 622       { "windows", 2 },
 623       { "console", 3 },
 624       { "posix",   7 },
 625       { "wince",   9 },
 626       { "xbox",   14 },
 627       { NULL, 0 }
 628     };
 629
 630   /* Check for the presence of a version number.  */
 631   sver = strchr (optarg, ':');
 632   if (sver == NULL)
 633     len = strlen (optarg);
 634   else
 635     {
 636       len = sver - optarg;
 637       set_pep_name ("__major_subsystem_version__",
 638                     strtoul (sver + 1, &end, 0));
 639       if (*end == '.')
 640         set_pep_name ("__minor_subsystem_version__",
 641                       strtoul (end + 1, &end, 0));
 642       if (*end != '\0')
 643         einfo (_("%P: warning: bad version number in -subsystem option\n"));
 644     }
 645
 646   /* Check for numeric subsystem.  */
 647   temp_subsystem = strtoul (optarg, & end, 0);
 648   if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
 649     {
 650       /* Search list for a numeric match to use its entry point.  */
 651       for (i = 0; v[i].name; i++)
 652         if (v[i].value == (int) temp_subsystem)
 653           break;
 654
 655       /* Use this subsystem.  */
 656       pep_subsystem = (int) temp_subsystem;
 657     }
 658   else
 659     {
 660       /* Search for subsystem by name.  */
 661       for (i = 0; v[i].name; i++)
 662         if (strncmp (optarg, v[i].name, len) == 0
 663             && v[i].name[len] == '\0')
 664           break;
 665
 666       if (v[i].name == NULL)
 667         {
 668           einfo (_("%F%P: invalid subsystem type %s\n"), optarg);
 669           return;
 670         }
 671
 672       pep_subsystem = v[i].value;
 673     }
 674
 675   set_pep_name ("__subsystem__", pep_subsystem);
 676
 677   return;
 678 }
 679
 680
 681 static void
 682 set_pep_value (char *name)
 683 {
 684   char *end;
 685
 686   set_pep_name (name,  (bfd_vma) strtoull (optarg, &end, 0));
 687
 688   if (end == optarg)
 689     einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
 690
 691   optarg = end;
 692 }
 693
 694
 695 static void
 696 set_pep_stack_heap (char *resname, char *comname)
 697 {
 698   set_pep_value (resname);
 699
 700   if (*optarg == ',')
 701     {
 702       optarg++;
 703       set_pep_value (comname);
 704     }
 705   else if (*optarg)
 706     einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg);
 707 }
 708
 709 #define DEFAULT_BUILD_ID_STYLE  "md5"
 710
 711 static bool
 712 gld${EMULATION_NAME}_handle_option (int optc)
 713 {
 714   is_underscoring ();
 715   switch (optc)
 716     {
 717     default:
 718       return false;
 719
 720     case OPTION_BASE_FILE:
 721       link_info.base_file = fopen (optarg, FOPEN_WB);
 722       if (link_info.base_file == NULL)
 723         einfo (_("%F%P: cannot open base file %s\n"), optarg);
 724       break;
 725
 726       /* PE options.  */
 727     case OPTION_HEAP:
 728       set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
 729       break;
 730     case OPTION_STACK:
 731       set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
 732       break;
 733     case OPTION_SUBSYSTEM:
 734       set_pep_subsystem ();
 735       break;
 736     case OPTION_MAJOR_OS_VERSION:
 737       set_pep_value ("__major_os_version__");
 738       break;
 739     case OPTION_MINOR_OS_VERSION:
 740       set_pep_value ("__minor_os_version__");
 741       break;
 742     case OPTION_MAJOR_SUBSYSTEM_VERSION:
 743       set_pep_value ("__major_subsystem_version__");
 744       break;
 745     case OPTION_MINOR_SUBSYSTEM_VERSION:
 746       set_pep_value ("__minor_subsystem_version__");
 747       break;
 748     case OPTION_MAJOR_IMAGE_VERSION:
 749       set_pep_value ("__major_image_version__");
 750       break;
 751     case OPTION_MINOR_IMAGE_VERSION:
 752       set_pep_value ("__minor_image_version__");
 753       break;
 754     case OPTION_FILE_ALIGNMENT:
 755       set_pep_value ("__file_alignment__");
 756       break;
 757     case OPTION_SECTION_ALIGNMENT:
 758       set_pep_value ("__section_alignment__");
 759       break;
 760     case OPTION_DLL:
 761       set_pep_name ("__dll__", 1);
 762       break;
 763     case OPTION_IMAGE_BASE:
 764       set_pep_value ("__image_base__");
 765       break;
 766     case OPTION_SUPPORT_OLD_CODE:
 767       support_old_code = 1;
 768       break;
 769     case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
 770       pep_use_nul_prefixed_import_tables = true;
 771       break;
 772     case OPTION_NO_LEADING_UNDERSCORE:
 773       pep_leading_underscore = 0;
 774       break;
 775     case OPTION_LEADING_UNDERSCORE:
 776       pep_leading_underscore = 1;
 777       break;
 778     case OPTION_INSERT_TIMESTAMP:
 779       insert_timestamp = true;
 780       break;
 781     case OPTION_NO_INSERT_TIMESTAMP:
 782       insert_timestamp = false;
 783       break;
 784 #ifdef DLL_SUPPORT
 785     case OPTION_OUT_DEF:
 786       pep_out_def_filename = xstrdup (optarg);
 787       break;
 788     case OPTION_EXPORT_ALL:
 789       pep_dll_export_everything = 1;
 790       break;
 791     case OPTION_EXCLUDE_SYMBOLS:
 792       pep_dll_add_excludes (optarg, EXCLUDESYMS);
 793       break;
 794     case OPTION_EXCLUDE_ALL_SYMBOLS:
 795       pep_dll_exclude_all_symbols = 1;
 796       break;
 797     case OPTION_EXCLUDE_LIBS:
 798       pep_dll_add_excludes (optarg, EXCLUDELIBS);
 799       break;
 800     case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
 801       pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
 802       break;
 803     case OPTION_KILL_ATS:
 804       pep_dll_kill_ats = 1;
 805       break;
 806     case OPTION_STDCALL_ALIASES:
 807       pep_dll_stdcall_aliases = 1;
 808       break;
 809     case OPTION_ENABLE_STDCALL_FIXUP:
 810       pep_enable_stdcall_fixup = 1;
 811       break;
 812     case OPTION_DISABLE_STDCALL_FIXUP:
 813       pep_enable_stdcall_fixup = 0;
 814       break;
 815     case OPTION_WARN_DUPLICATE_EXPORTS:
 816       pep_dll_warn_dup_exports = 1;
 817       break;
 818     case OPTION_IMP_COMPAT:
 819       pep_dll_compat_implib = 1;
 820       break;
 821     case OPTION_ENABLE_AUTO_IMAGE_BASE:
 822       pep_enable_auto_image_base = 1;
 823       break;
 824     case OPTION_DISABLE_AUTO_IMAGE_BASE:
 825       pep_enable_auto_image_base = 0;
 826       break;
 827     case OPTION_DLL_SEARCH_PREFIX:
 828       pep_dll_search_prefix = xstrdup (optarg);
 829       break;
 830     case OPTION_NO_DEFAULT_EXCLUDES:
 831       pep_dll_do_default_excludes = 0;
 832       break;
 833     case OPTION_DLL_ENABLE_AUTO_IMPORT:
 834       link_info.pei386_auto_import = 1;
 835       break;
 836     case OPTION_DLL_DISABLE_AUTO_IMPORT:
 837       link_info.pei386_auto_import = 0;
 838       break;
 839     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
 840       link_info.pei386_runtime_pseudo_reloc = 2;
 841       break;
 842     case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
 843       link_info.pei386_runtime_pseudo_reloc = 0;
 844       break;
 845     case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
 846       link_info.pei386_runtime_pseudo_reloc = 2;
 847       break;
 848     case OPTION_ENABLE_EXTRA_PE_DEBUG:
 849       pep_dll_extra_pe_debug = 1;
 850       break;
 851 #endif
 852     case OPTION_ENABLE_LONG_SECTION_NAMES:
 853       pep_use_coff_long_section_names = 1;
 854       break;
 855     case OPTION_DISABLE_LONG_SECTION_NAMES:
 856       pep_use_coff_long_section_names = 0;
 857       break;
 858     /*  Get DLLCharacteristics bits  */
 859     case OPTION_HIGH_ENTROPY_VA:
 860       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA;
 861       /* fall through */
 862     case OPTION_DYNAMIC_BASE:
 863       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
 864       /* fall through */
 865     case OPTION_ENABLE_RELOC_SECTION:
 866       pep_dll_enable_reloc_section = 1;
 867       break;
 868     case OPTION_DISABLE_RELOC_SECTION:
 869       pep_dll_enable_reloc_section = 0;
 870       /* fall through */
 871     case OPTION_DISABLE_DYNAMIC_BASE:
 872       pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
 873       /* fall through */
 874     case OPTION_DISABLE_HIGH_ENTROPY_VA:
 875       pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA;
 876       break;
 877     case OPTION_FORCE_INTEGRITY:
 878       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
 879       break;
 880     case OPTION_DISABLE_FORCE_INTEGRITY:
 881       pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
 882       break;
 883     case OPTION_NX_COMPAT:
 884       pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
 885       break;
 886     case OPTION_DISABLE_NX_COMPAT:
 887       pe_dll_characteristics &= ~ IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
 888       break;
 889     case OPTION_NO_ISOLATION:
 890       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
 891       break;
 892     case OPTION_DISABLE_NO_ISOLATION:
 893       pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
 894       break;
 895     case OPTION_NO_SEH:
 896       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
 897       break;
 898     case OPTION_DISABLE_NO_SEH:
 899       pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_SEH;
 900       break;
 901     case OPTION_NO_BIND:
 902       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
 903       break;
 904     case OPTION_DISABLE_NO_BIND:
 905       pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_NO_BIND;
 906       break;
 907     case OPTION_WDM_DRIVER:
 908       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
 909       break;
 910     case OPTION_DISABLE_WDM_DRIVER:
 911       pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
 912       break;
 913     case OPTION_TERMINAL_SERVER_AWARE:
 914       pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
 915       break;
 916     case OPTION_DISABLE_TERMINAL_SERVER_AWARE:
 917       pe_dll_characteristics &= ~ IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
 918       break;
 919     case OPTION_BUILD_ID:
 920       free ((char *) emit_build_id);
 921       emit_build_id = NULL;
 922       if (optarg == NULL)
 923         optarg = DEFAULT_BUILD_ID_STYLE;
 924       if (strcmp (optarg, "none"))
 925         emit_build_id = xstrdup (optarg);
 926       break;
 927     }
 928
 929   /*  Set DLLCharacteristics bits  */
 930   set_pep_name ("__dll_characteristics__", pe_dll_characteristics);
 931
 932   return true;
 933 }
 934 \f
 935
 936 #ifdef DLL_SUPPORT
 937 static unsigned long
 938 strhash (const char *str)
 939 {
 940   const unsigned char *s;
 941   unsigned long hash;
 942   unsigned int c;
 943   unsigned int len;
 944
 945   hash = 0;
 946   len = 0;
 947   s = (const unsigned char *) str;
 948   while ((c = *s++) != '\0')
 949     {
 950       hash += c + (c << 17);
 951       hash ^= hash >> 2;
 952       ++len;
 953     }
 954   hash += len + (len << 17);
 955   hash ^= hash >> 2;
 956
 957   return hash;
 958 }
 959
 960 /* Use the output file to create a image base for relocatable DLLs.  */
 961
 962 static bfd_vma
 963 compute_dll_image_base (const char *ofile)
 964 {
 965   bfd_vma hash = (bfd_vma) strhash (ofile);
 966   return NT_DLL_AUTO_IMAGE_BASE + ((hash << 16) & NT_DLL_AUTO_IMAGE_MASK);
 967 }
 968 #endif
 969
 970 /* Assign values to the special symbols before the linker script is
 971    read.  */
 972
 973 static void
 974 gld${EMULATION_NAME}_set_symbols (void)
 975 {
 976   /* Run through and invent symbols for all the
 977      names and insert the defaults.  */
 978   int j;
 979
 980   is_underscoring ();
 981
 982   if (!init[IMAGEBASEOFF].inited)
 983     {
 984       if (bfd_link_relocatable (&link_info))
 985         init[IMAGEBASEOFF].value = 0;
 986       else if (init[DLLOFF].value || bfd_link_dll (&link_info))
 987         {
 988 #ifdef DLL_SUPPORT
 989           init[IMAGEBASEOFF].value = (pep_enable_auto_image_base
 990                                       ? compute_dll_image_base (output_filename)
 991                                       : NT_DLL_IMAGE_BASE);
 992 #else
 993           init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
 994 #endif
 995         }
 996       else
 997         init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
 998       init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
 999     }
1000
1001   /* Don't do any symbol assignments if this is a relocatable link.  */
1002   if (bfd_link_relocatable (&link_info))
1003     return;
1004
1005   /* Glue the assignments into the abs section.  */
1006   push_stat_ptr (&abs_output_section->children);
1007
1008   for (j = 0; init[j].ptr; j++)
1009     {
1010       bfd_vma val = init[j].value;
1011       lang_assignment_statement_type *rv;
1012
1013       rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
1014                                             exp_intop (val), false));
1015       if (init[j].size == sizeof (short))
1016         *(short *) init[j].ptr = (short) val;
1017       else if (init[j].size == sizeof (int))
1018         *(int *) init[j].ptr = (int) val;
1019       else if (init[j].size == sizeof (long))
1020         *(long *) init[j].ptr = (long) val;
1021       /* This might be a long long or other special type.  */
1022       else if (init[j].size == sizeof (bfd_vma))
1023         *(bfd_vma *) init[j].ptr = val;
1024       else      abort ();
1025       if (j == IMAGEBASEOFF)
1026         image_base_statement = rv;
1027     }
1028   /* Restore the pointer.  */
1029   pop_stat_ptr ();
1030
1031   if (pep.FileAlignment > pep.SectionAlignment)
1032     {
1033       einfo (_("%P: warning, file alignment > section alignment\n"));
1034     }
1035 }
1036
1037 /* This is called after the linker script and the command line options
1038    have been read.  */
1039
1040 static void
1041 gld${EMULATION_NAME}_after_parse (void)
1042 {
1043   /* PR ld/6744:  Warn the user if they have used an ELF-only
1044      option hoping it will work on PE+.  */
1045   if (link_info.export_dynamic)
1046     einfo (_("%P: warning: --export-dynamic is not supported for PE+ "
1047       "targets, did you mean --export-all-symbols?\n"));
1048
1049   set_entry_point ();
1050
1051   after_parse_default ();
1052 }
1053
1054 #ifdef DLL_SUPPORT
1055 static struct bfd_link_hash_entry *pep_undef_found_sym;
1056
1057 static bool
1058 pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1059 {
1060   int sl;
1061   char *string = inf;
1062   const char *hs = h->root.string;
1063
1064   sl = strlen (string);
1065   if (h->type == bfd_link_hash_defined
1066       && ((*hs == '@' && *string == '_'
1067                    && strncmp (hs + 1, string + 1, sl - 1) == 0)
1068                   || strncmp (hs, string, sl) == 0)
1069       && h->root.string[sl] == '@')
1070     {
1071       pep_undef_found_sym = h;
1072       return false;
1073     }
1074   return true;
1075 }
1076
1077 static void
1078 pep_fixup_stdcalls (void)
1079 {
1080   static int gave_warning_message = 0;
1081   struct bfd_link_hash_entry *undef, *sym;
1082
1083   if (pep_dll_extra_pe_debug)
1084     printf ("%s\n", __FUNCTION__);
1085
1086   for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1087     if (undef->type == bfd_link_hash_undefined)
1088       {
1089         char* at = strchr (undef->root.string, '@');
1090         int lead_at = (*undef->root.string == '@');
1091         if (lead_at)
1092           at = strchr (undef->root.string + 1, '@');
1093         if (at || lead_at)
1094           {
1095             /* The symbol is a stdcall symbol, so let's look for a
1096                cdecl symbol with the same name and resolve to that.  */
1097             char *cname = xstrdup (undef->root.string);
1098
1099             if (lead_at)
1100               *cname = '_';
1101             at = strchr (cname, '@');
1102             if (at)
1103               *at = 0;
1104             sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1105
1106             if (sym && sym->type == bfd_link_hash_defined)
1107               {
1108                 undef->type = bfd_link_hash_defined;
1109                 undef->u.def.value = sym->u.def.value;
1110                 undef->u.def.section = sym->u.def.section;
1111
1112                 if (pep_enable_stdcall_fixup == -1)
1113                   {
1114                     einfo (_("warning: resolving %s by linking to %s\n"),
1115                            undef->root.string, cname);
1116                     if (! gave_warning_message)
1117                       {
1118                         gave_warning_message = 1;
1119                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1120                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1121                       }
1122                   }
1123               }
1124           }
1125         else
1126           {
1127             /* The symbol is a cdecl symbol, so we look for stdcall
1128                symbols - which means scanning the whole symbol table.  */
1129             pep_undef_found_sym = 0;
1130             bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
1131                                     (char *) undef->root.string);
1132             sym = pep_undef_found_sym;
1133             if (sym)
1134               {
1135                 undef->type = bfd_link_hash_defined;
1136                 undef->u.def.value = sym->u.def.value;
1137                 undef->u.def.section = sym->u.def.section;
1138
1139                 if (pep_enable_stdcall_fixup == -1)
1140                   {
1141                     einfo (_("warning: resolving %s by linking to %s\n"),
1142                            undef->root.string, sym->root.string);
1143                     if (! gave_warning_message)
1144                       {
1145                         gave_warning_message = 1;
1146                         einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1147                         einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1148                       }
1149                   }
1150               }
1151           }
1152       }
1153 }
1154
1155 static void
1156 make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
1157 {
1158   struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1159   char addend[8];
1160   bfd_vma _addend = 0;
1161   int suc = 0;
1162
1163   if (pep_dll_extra_pe_debug)
1164     printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1165             (unsigned long) rel->address, (long) rel->addend);
1166
1167   memset (addend, 0, sizeof (addend));
1168   switch ((rel->howto->bitsize))
1169     {
1170     case 8:
1171       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
1172       if (suc && rel->howto->pc_relative)
1173         _addend = bfd_get_signed_8 (s->owner, addend);
1174       else if (suc)
1175         _addend = bfd_get_8 (s->owner, addend);
1176       break;
1177     case 16:
1178       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
1179       if (suc && rel->howto->pc_relative)
1180         _addend = bfd_get_signed_16 (s->owner, addend);
1181       else if (suc)
1182         _addend = bfd_get_16 (s->owner, addend);
1183       break;
1184     case 32:
1185       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
1186       if (suc && rel->howto->pc_relative)
1187         _addend = bfd_get_signed_32 (s->owner, addend);
1188       else if (suc)
1189         _addend = bfd_get_32 (s->owner, addend);
1190       break;
1191     case 64:
1192       suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
1193       if (suc)
1194         _addend = bfd_get_64 (s->owner, addend);
1195       break;
1196     }
1197   if (! suc)
1198     einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
1199            s->owner, s, rel->address);
1200
1201   if (pep_dll_extra_pe_debug)
1202     {
1203       printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx",
1204               (long) _addend, (long) rel->addend, (long) rel->address);
1205       if (rel->howto->pc_relative)
1206         printf (" pcrel");
1207       printf (" %d bit rel.\n", (int) rel->howto->bitsize);
1208     }
1209
1210   pep_create_import_fixup (rel, s, _addend, name, symname);
1211 }
1212
1213 static bool
1214 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1215 {
1216   printf ("+%s\n", h->string);
1217
1218   return true;
1219 }
1220 #endif /* DLL_SUPPORT */
1221
1222 static void
1223 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1224 {
1225   int *found = (int *) obj;
1226
1227   if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1228     *found = 1;
1229 }
1230
1231 static bool
1232 pecoff_checksum_contents (bfd *abfd,
1233                           void (*process) (const void *, size_t, void *),
1234                           void *arg)
1235 {
1236   file_ptr filepos = (file_ptr) 0;
1237
1238   while (1)
1239     {
1240       unsigned char b;
1241       int status;
1242
1243       if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1244         return 0;
1245
1246       status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1247       if (status < 1)
1248         {
1249           break;
1250         }
1251
1252       (*process) (&b, 1, arg);
1253       filepos += 1;
1254     }
1255
1256   return true;
1257 }
1258
1259 static bool
1260 write_build_id (bfd *abfd)
1261 {
1262   struct pe_tdata *t = pe_data (abfd);
1263   asection *asec;
1264   struct bfd_link_order *link_order = NULL;
1265   unsigned char *contents;
1266   bfd_size_type size;
1267   bfd_size_type build_id_size;
1268   unsigned char *build_id;
1269
1270   /* Find the section the .buildid output section has been merged info.  */
1271   for (asec = abfd->sections; asec != NULL; asec = asec->next)
1272     {
1273       struct bfd_link_order *l = NULL;
1274       for (l = asec->map_head.link_order; l != NULL; l = l->next)
1275         {
1276           if (l->type == bfd_indirect_link_order)
1277             {
1278               if (l->u.indirect.section == t->build_id.sec)
1279                 {
1280                   link_order = l;
1281                   break;
1282                 }
1283             }
1284         }
1285
1286       if (link_order)
1287         break;
1288     }
1289
1290   if (!link_order)
1291     {
1292       einfo (_("%P: warning: .buildid section discarded,"
1293                " --build-id ignored\n"));
1294       return true;
1295     }
1296
1297   if (t->build_id.sec->contents == NULL)
1298     t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1299   contents = t->build_id.sec->contents;
1300   size = t->build_id.sec->size;
1301
1302   build_id_size = compute_build_id_size (t->build_id.style);
1303   build_id = xmalloc (build_id_size);
1304   generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1305
1306   bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1307
1308   /* Construct a debug directory entry which points to an immediately following CodeView record.  */
1309   struct internal_IMAGE_DEBUG_DIRECTORY idd;
1310   idd.Characteristics = 0;
1311   idd.TimeDateStamp = 0;
1312   idd.MajorVersion = 0;
1313   idd.MinorVersion = 0;
1314   idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1315   idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1316   idd.AddressOfRawData = asec->vma - ib + link_order->offset
1317     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1318   idd.PointerToRawData = asec->filepos + link_order->offset
1319     + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1320
1321   struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1322   _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1323
1324   /* Write the debug directory enttry */
1325   if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1326     return 0;
1327
1328   if (bfd_bwrite (contents, size, abfd) != size)
1329     return 0;
1330
1331   /* Construct the CodeView record.  */
1332   CODEVIEW_INFO cvinfo;
1333   cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1334   cvinfo.Age = 1;
1335
1336   /* Zero pad or truncate the generated build_id to fit in the CodeView record.  */
1337   memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1338   memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1339           ? CV_INFO_SIGNATURE_LENGTH :  build_id_size);
1340
1341   free (build_id);
1342
1343   /* Write the codeview record.  */
1344   if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1345     return 0;
1346
1347   /* Record the location of the debug directory in the data directory.  */
1348   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1349     = asec->vma  - ib + link_order->offset;
1350   pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1351     = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1352
1353   return true;
1354 }
1355
1356 /* Make .buildid section, and set up coff_tdata->build_id. */
1357 static bool
1358 setup_build_id (bfd *ibfd)
1359 {
1360   asection *s;
1361   flagword flags;
1362
1363   if (!validate_build_id_style (emit_build_id))
1364     {
1365       einfo (_("%P: warning: unrecognized --build-id style ignored\n"));
1366       return false;
1367     }
1368
1369   flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1370            | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1371   s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1372   if (s != NULL)
1373     {
1374       struct pe_tdata *t = pe_data (link_info.output_bfd);
1375       t->build_id.after_write_object_contents = &write_build_id;
1376       t->build_id.style = emit_build_id;
1377       t->build_id.sec = s;
1378
1379       /* Section is a fixed size:
1380          One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1381          pointing at a CV_INFO_PDB70 record containing the build-id, with a
1382          null byte for PdbFileName.  */
1383       s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1384         + sizeof (CV_INFO_PDB70) + 1;
1385
1386       return true;
1387     }
1388
1389   einfo (_("%P: warning: cannot create .buildid section,"
1390            " --build-id ignored\n"));
1391   return false;
1392 }
1393
1394 static void
1395 gld${EMULATION_NAME}_after_open (void)
1396 {
1397   after_open_default ();
1398
1399   is_underscoring ();
1400 #ifdef DLL_SUPPORT
1401   if (pep_dll_extra_pe_debug)
1402     {
1403       bfd *a;
1404       struct bfd_link_hash_entry *sym;
1405
1406       printf ("%s()\n", __FUNCTION__);
1407
1408       for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1409         printf ("-%s\n", sym->root.string);
1410       bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1411
1412       for (a = link_info.input_bfds; a; a = a->link.next)
1413         printf ("*%s\n", bfd_get_filename (a));
1414     }
1415 #endif
1416
1417   if (emit_build_id != NULL)
1418     {
1419       bfd *abfd;
1420
1421       /* Find a COFF input.  */
1422       for (abfd = link_info.input_bfds;
1423            abfd != (bfd *) NULL; abfd = abfd->link.next)
1424         if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1425           break;
1426
1427       /* If there are no COFF input files do not try to
1428          add a build-id section.  */
1429       if (abfd == NULL
1430           || !setup_build_id (abfd))
1431         {
1432           free ((char *) emit_build_id);
1433           emit_build_id = NULL;
1434         }
1435     }
1436
1437   /* Pass the wacky PE command line options into the output bfd.
1438      FIXME: This should be done via a function, rather than by
1439      including an internal BFD header.  */
1440
1441   if (bfd_get_flavour (link_info.output_bfd) != bfd_target_coff_flavour
1442       || coff_data (link_info.output_bfd) == NULL
1443       || coff_data (link_info.output_bfd)->pe == 0)
1444     einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"),
1445            link_info.output_bfd);
1446
1447   pe_data (link_info.output_bfd)->pe_opthdr = pep;
1448   pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1449   pe_data (link_info.output_bfd)->real_flags |= real_flags;
1450   if (insert_timestamp)
1451     pe_data (link_info.output_bfd)->timestamp = -1;
1452   else
1453     pe_data (link_info.output_bfd)->timestamp = 0;
1454
1455   /* At this point we must decide whether to use long section names
1456      in the output or not.  If the user hasn't explicitly specified
1457      on the command line, we leave it to the default for the format
1458      (object files yes, image files no), except if there is debug
1459      information present; GDB relies on the long section names to
1460      find it, so enable it in that case.  */
1461   if (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1462     {
1463       if (bfd_link_relocatable (&link_info))
1464         pep_use_coff_long_section_names = 1;
1465       else
1466         {
1467           /* Iterate over all sections of all input BFDs, checking
1468              for any that begin 'debug_' and are long names.  */
1469           LANG_FOR_EACH_INPUT_STATEMENT (is)
1470           {
1471             int found_debug = 0;
1472
1473             bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1474             if (found_debug)
1475               {
1476                 pep_use_coff_long_section_names = 1;
1477                 break;
1478               }
1479           }
1480         }
1481     }
1482
1483   pep_output_file_set_long_section_names (link_info.output_bfd);
1484
1485 #ifdef DLL_SUPPORT
1486   pep_process_import_defs (link_info.output_bfd, &link_info);
1487
1488   if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
1489     pep_find_data_imports (U ("_head_"), make_import_fixup);
1490
1491   /* The implementation of the feature is rather dumb and would cause the
1492      compilation time to go through the roof if there are many undefined
1493      symbols in the link, so it needs to be run after auto-import.  */
1494   if (pep_enable_stdcall_fixup) /* -1=warn or 1=enable */
1495     pep_fixup_stdcalls ();
1496
1497 #ifndef TARGET_IS_i386pep
1498   if (bfd_link_pic (&link_info))
1499 #else
1500   if (!bfd_link_relocatable (&link_info))
1501 #endif
1502     pep_dll_build_sections (link_info.output_bfd, &link_info);
1503
1504 #ifndef TARGET_IS_i386pep
1505   else
1506     pep_exe_build_sections (link_info.output_bfd, &link_info);
1507 #endif
1508 #endif /* DLL_SUPPORT */
1509
1510   {
1511     /* This next chunk of code tries to detect the case where you have
1512        two import libraries for the same DLL (specifically,
1513        symbolically linking libm.a and libc.a in cygwin to
1514        libcygwin.a).  In those cases, it's possible for function
1515        thunks from the second implib to be used but without the
1516        head/tail objects, causing an improper import table.  We detect
1517        those cases and rename the "other" import libraries to match
1518        the one the head/tail come from, so that the linker will sort
1519        things nicely and produce a valid import table.  */
1520
1521     LANG_FOR_EACH_INPUT_STATEMENT (is)
1522       {
1523         if (is->the_bfd->my_archive)
1524           {
1525             int idata2 = 0, reloc_count=0, is_imp = 0;
1526             asection *sec;
1527
1528             /* See if this is an import library thunk.  */
1529             for (sec = is->the_bfd->sections; sec; sec = sec->next)
1530               {
1531                 if (strcmp (sec->name, ".idata\$2") == 0)
1532                   idata2 = 1;
1533                 if (startswith (sec->name, ".idata\$"))
1534                   is_imp = 1;
1535                 reloc_count += sec->reloc_count;
1536               }
1537
1538             if (is_imp && !idata2 && reloc_count)
1539               {
1540                 /* It is, look for the reference to head and see if it's
1541                    from our own library.  */
1542                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1543                   {
1544                     int i;
1545                     long relsize;
1546                     asymbol **symbols;
1547                     arelent **relocs;
1548                     int nrelocs;
1549
1550                     relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1551                     if (relsize < 1)
1552                       break;
1553
1554                     if (!bfd_generic_link_read_symbols (is->the_bfd))
1555                       {
1556                         einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1557                                is->the_bfd);
1558                         return;
1559                       }
1560                     symbols = bfd_get_outsymbols (is->the_bfd);
1561
1562                     relocs = xmalloc ((size_t) relsize);
1563                     nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1564                                                       relocs, symbols);
1565                     if (nrelocs < 0)
1566                       {
1567                         free (relocs);
1568                         einfo (_("%X%P: unable to process relocs: %E\n"));
1569                         return;
1570                       }
1571
1572                     for (i = 0; i < nrelocs; i++)
1573                       {
1574                         struct bfd_symbol *s;
1575                         struct bfd_link_hash_entry * blhe;
1576                         bfd *other_bfd;
1577                         const char *other_bfd_filename;
1578
1579                         s = (relocs[i]->sym_ptr_ptr)[0];
1580
1581                         if (s->flags & BSF_LOCAL)
1582                           continue;
1583
1584                         /* Thunk section with reloc to another bfd.  */
1585                         blhe = bfd_link_hash_lookup (link_info.hash,
1586                                                      s->name,
1587                                                      false, false, true);
1588
1589                         if (blhe == NULL
1590                             || blhe->type != bfd_link_hash_defined)
1591                           continue;
1592
1593                         other_bfd = blhe->u.def.section->owner;
1594                         if (other_bfd->my_archive == is->the_bfd->my_archive)
1595                           continue;
1596
1597                         other_bfd_filename
1598                           = (other_bfd->my_archive
1599                              ? bfd_get_filename (other_bfd->my_archive)
1600                              : bfd_get_filename (other_bfd));
1601
1602                         if (filename_cmp (bfd_get_filename
1603                                             (is->the_bfd->my_archive),
1604                                           other_bfd_filename) == 0)
1605                           continue;
1606
1607                         /* Sort this implib to match the other one.  */
1608                         lang_input_statement_type *arch_is
1609                           = bfd_usrdata (is->the_bfd->my_archive);
1610                         arch_is->sort_key = other_bfd_filename;
1611                         break;
1612                       }
1613
1614                     free (relocs);
1615                     /* Note - we do not free the symbols,
1616                        they are now cached in the BFD.  */
1617                   }
1618               }
1619           }
1620       }
1621   }
1622
1623   {
1624
1625     /* Careful - this is a shell script.  Watch those dollar signs! */
1626     /* Microsoft import libraries have every member named the same,
1627        and not in the right order for us to link them correctly.  We
1628        must detect these and rename the members so that they'll link
1629        correctly.  There are three types of objects: the head, the
1630        thunks, and the sentinel(s).  The head is easy; it's the one
1631        with idata2.  We assume that the sentinels won't have relocs,
1632        and the thunks will.  It's easier than checking the symbol
1633        table for external references.  */
1634     LANG_FOR_EACH_INPUT_STATEMENT (is)
1635       {
1636         if (is->the_bfd->my_archive)
1637           {
1638             char *pnt;
1639
1640             /* Microsoft import libraries may contain archive members for
1641                one or more DLLs, together with static object files.
1642                Inspect all members that are named *.dll - check whether
1643                they contain .idata sections. Do the renaming of all
1644                archive members that seem to be Microsoft style import
1645                objects.  */
1646             pnt = strrchr (bfd_get_filename (is->the_bfd), '.');
1647
1648             if (pnt != NULL && (fileext_cmp (pnt + 1, "dll") == 0))
1649               {
1650                 int idata2 = 0, reloc_count = 0, idata = 0;
1651                 asection *sec;
1652                 char *new_name, seq;
1653
1654                 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1655                   {
1656                     if (strcmp (sec->name, ".idata\$2") == 0)
1657                       idata2 = 1;
1658                     if (strncmp (sec->name, ".idata\$", 6) == 0)
1659                       idata = 1;
1660                     reloc_count += sec->reloc_count;
1661                   }
1662
1663                 /* An archive member named .dll, but not having any .idata
1664                    sections - apparently not a Microsoft import object
1665                    after all: Skip renaming it.  */
1666                 if (!idata)
1667                   continue;
1668
1669                 if (idata2) /* .idata2 is the TOC */
1670                   seq = 'a';
1671                 else if (reloc_count > 0) /* thunks */
1672                   seq = 'b';
1673                 else /* sentinel */
1674                   seq = 'c';
1675
1676                 new_name
1677                   = xmalloc (strlen (bfd_get_filename (is->the_bfd)) + 3);
1678                 sprintf (new_name, "%s.%c",
1679                          bfd_get_filename (is->the_bfd), seq);
1680                 is->sort_key = new_name;
1681               }
1682           }
1683       }
1684   }
1685 }
1686 \f
1687 static void
1688 gld${EMULATION_NAME}_before_allocation (void)
1689 {
1690   is_underscoring ();
1691   before_allocation_default ();
1692 }
1693 \f
1694 #ifdef DLL_SUPPORT
1695 /* This is called when an input file isn't recognized as a BFD.  We
1696    check here for .DEF files and pull them in automatically.  */
1697
1698 static int
1699 saw_option (char *option)
1700 {
1701   int i;
1702
1703   is_underscoring ();
1704
1705   for (i = 0; init[i].ptr; i++)
1706     if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1707       return init[i].inited;
1708   return 0;
1709 }
1710 #endif /* DLL_SUPPORT */
1711
1712 static bool
1713 gld${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1714 {
1715 #ifdef DLL_SUPPORT
1716   const char *ext = strrchr (entry->filename, '.');
1717
1718   if (ext != NULL && fileext_cmp (ext + 1, "def") == 0)
1719     {
1720       pep_def_file = def_file_parse (entry->filename, pep_def_file);
1721
1722       if (pep_def_file)
1723         {
1724           int i, buflen=0, len;
1725           char *buf;
1726
1727           for (i = 0; i < pep_def_file->num_exports; i++)
1728             {
1729               len = strlen (pep_def_file->exports[i].internal_name);
1730               if (buflen < len + 2)
1731                 buflen = len + 2;
1732             }
1733
1734           buf = xmalloc (buflen);
1735
1736           for (i = 0; i < pep_def_file->num_exports; i++)
1737             {
1738               struct bfd_link_hash_entry *h;
1739
1740               sprintf (buf, "%s%s", U (""),
1741                        pep_def_file->exports[i].internal_name);
1742
1743               h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
1744               if (h == (struct bfd_link_hash_entry *) NULL)
1745                 einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n"));
1746               if (h->type == bfd_link_hash_new)
1747                 {
1748                   h->type = bfd_link_hash_undefined;
1749                   h->u.undef.abfd = NULL;
1750                   bfd_link_add_undef (link_info.hash, h);
1751                 }
1752             }
1753           free (buf);
1754
1755           /* def_file_print (stdout, pep_def_file); */
1756           if (pep_def_file->is_dll == 1)
1757             link_info.type = type_dll;
1758
1759           if (pep_def_file->base_address != (bfd_vma)(-1))
1760             {
1761               pep.ImageBase
1762                 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1763                 = init[IMAGEBASEOFF].value
1764                 = pep_def_file->base_address;
1765               init[IMAGEBASEOFF].inited = 1;
1766               if (image_base_statement)
1767                 image_base_statement->exp
1768                   = exp_assign ("__image_base__", exp_intop (pep.ImageBase),
1769                                 false);
1770             }
1771
1772           if (pep_def_file->stack_reserve != -1
1773               && ! saw_option ("__size_of_stack_reserve__"))
1774             {
1775               pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1776               if (pep_def_file->stack_commit != -1)
1777                 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1778             }
1779           if (pep_def_file->heap_reserve != -1
1780               && ! saw_option ("__size_of_heap_reserve__"))
1781             {
1782               pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1783               if (pep_def_file->heap_commit != -1)
1784                 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1785             }
1786           return true;
1787         }
1788     }
1789 #endif
1790   return false;
1791 }
1792
1793 static bool
1794 gld${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1795 {
1796   is_underscoring ();
1797 #ifdef DLL_SUPPORT
1798 #ifdef TARGET_IS_i386pep
1799   pep_dll_id_target ("pei-x86-64");
1800 #endif
1801   if (pep_bfd_is_dll (entry->the_bfd))
1802     return pep_implied_import_dll (entry->filename);
1803 #endif
1804   return false;
1805 }
1806
1807 static void
1808 gld${EMULATION_NAME}_finish (void)
1809 {
1810   is_underscoring ();
1811   finish_default ();
1812
1813 #ifdef DLL_SUPPORT
1814   if (bfd_link_pic (&link_info)
1815       || pep_dll_enable_reloc_section
1816       || (!bfd_link_relocatable (&link_info)
1817           && pep_def_file->num_exports != 0))
1818     {
1819       pep_dll_fill_sections (link_info.output_bfd, &link_info);
1820       if (command_line.out_implib_filename
1821           && (pep_def_file->num_exports != 0
1822               || bfd_link_pic (&link_info)))
1823         pep_dll_generate_implib (pep_def_file,
1824                                  command_line.out_implib_filename, &link_info);
1825     }
1826
1827   if (pep_out_def_filename)
1828     pep_dll_generate_def_file (pep_out_def_filename);
1829 #endif /* DLL_SUPPORT */
1830
1831   /* I don't know where .idata gets set as code, but it shouldn't be.  */
1832   {
1833     asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1834
1835     if (asec)
1836       {
1837         asec->flags &= ~SEC_CODE;
1838         asec->flags |= SEC_DATA;
1839       }
1840   }
1841 }
1842
1843 \f
1844 /* Place an orphan section.
1845
1846    We use this to put sections in a reasonable place in the file, and
1847    to ensure that they are aligned as required.
1848
1849    We handle grouped sections here as well.  A section named .foo\$nn
1850    goes into the output section .foo.  All grouped sections are sorted
1851    by name.
1852
1853    Grouped sections for the default sections are handled by the
1854    default linker script using wildcards, and are sorted by
1855    sort_sections.  */
1856
1857 static lang_output_section_statement_type *
1858 gld${EMULATION_NAME}_place_orphan (asection *s,
1859                                     const char *secname,
1860                                     int constraint)
1861 {
1862   const char *orig_secname = secname;
1863   char *dollar = NULL;
1864   lang_output_section_statement_type *os;
1865   lang_statement_list_type add_child;
1866   lang_output_section_statement_type *match_by_name = NULL;
1867   lang_statement_union_type **pl;
1868
1869   /* Look through the script to see where to place this section.  */
1870   if (!bfd_link_relocatable (&link_info)
1871       && (dollar = strchr (secname, '\$')) != NULL)
1872     {
1873       size_t len = dollar - secname;
1874       char *newname = xmalloc (len + 1);
1875       memcpy (newname, secname, len);
1876       newname[len] = '\0';
1877       secname = newname;
1878     }
1879
1880   lang_list_init (&add_child);
1881
1882   os = NULL;
1883   if (constraint == 0)
1884     for (os = lang_output_section_find (secname);
1885          os != NULL;
1886          os = next_matching_output_section_statement (os, 0))
1887       {
1888         /* If we don't match an existing output section, tell
1889            lang_insert_orphan to create a new output section.  */
1890         constraint = SPECIAL;
1891
1892         if (os->bfd_section != NULL
1893             && (os->bfd_section->flags == 0
1894                 || ((s->flags ^ os->bfd_section->flags)
1895                     & (SEC_LOAD | SEC_ALLOC)) == 0))
1896           {
1897             /* We already have an output section statement with this
1898                name, and its bfd section has compatible flags.
1899                If the section already exists but does not have any flags set,
1900                then it has been created by the linker, probably as a result of
1901                a --section-start command line switch.  */
1902             lang_add_section (&add_child, s, NULL, NULL, os);
1903             break;
1904           }
1905
1906         /* Save unused output sections in case we can match them
1907            against orphans later.  */
1908         if (os->bfd_section == NULL)
1909           match_by_name = os;
1910       }
1911
1912   /* If we didn't match an active output section, see if we matched an
1913      unused one and use that.  */
1914   if (os == NULL && match_by_name)
1915     {
1916       lang_add_section (&match_by_name->children, s, NULL, NULL, match_by_name);
1917       return match_by_name;
1918     }
1919
1920   if (os == NULL)
1921     {
1922       static struct orphan_save hold[] =
1923         {
1924           { ".text",
1925             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1926             0, 0, 0, 0 },
1927           { ".idata",
1928             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1929             0, 0, 0, 0 },
1930           { ".rdata",
1931             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1932             0, 0, 0, 0 },
1933           { ".data",
1934             SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1935             0, 0, 0, 0 },
1936           { ".bss",
1937             SEC_ALLOC,
1938             0, 0, 0, 0 }
1939         };
1940       enum orphan_save_index
1941         {
1942           orphan_text = 0,
1943           orphan_idata,
1944           orphan_rodata,
1945           orphan_data,
1946           orphan_bss
1947         };
1948       static int orphan_init_done = 0;
1949       struct orphan_save *place;
1950       lang_output_section_statement_type *after;
1951       etree_type *address;
1952       flagword flags;
1953       asection *nexts;
1954
1955       if (!orphan_init_done)
1956         {
1957           struct orphan_save *ho;
1958           for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1959             if (ho->name != NULL)
1960               {
1961                 ho->os = lang_output_section_find (ho->name);
1962                 if (ho->os != NULL && ho->os->flags == 0)
1963                   ho->os->flags = ho->flags;
1964               }
1965           orphan_init_done = 1;
1966         }
1967
1968       flags = s->flags;
1969       if (!bfd_link_relocatable (&link_info))
1970         {
1971           nexts = s;
1972           while ((nexts = bfd_get_next_section_by_name (nexts->owner,
1973                                                         nexts)))
1974             if (nexts->output_section == NULL
1975                 && (nexts->flags & SEC_EXCLUDE) == 0
1976                 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
1977                 && (nexts->owner->flags & DYNAMIC) == 0
1978                 && !bfd_input_just_syms (nexts->owner))
1979               flags = (((flags ^ SEC_READONLY)
1980                         | (nexts->flags ^ SEC_READONLY))
1981                        ^ SEC_READONLY);
1982         }
1983
1984       /* Try to put the new output section in a reasonable place based
1985          on the section name and section flags.  */
1986
1987       place = NULL;
1988       if ((flags & SEC_ALLOC) == 0)
1989         ;
1990       else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1991         place = &hold[orphan_bss];
1992       else if ((flags & SEC_READONLY) == 0)
1993         place = &hold[orphan_data];
1994       else if ((flags & SEC_CODE) == 0)
1995         {
1996           place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
1997                                                      : &hold[orphan_rodata]);
1998         }
1999       else
2000         place = &hold[orphan_text];
2001
2002       after = NULL;
2003       if (place != NULL)
2004         {
2005           if (place->os == NULL)
2006             place->os = lang_output_section_find (place->name);
2007           after = place->os;
2008           if (after == NULL)
2009             after = lang_output_section_find_by_flags (s, flags, &place->os,
2010                                                        NULL);
2011           if (after == NULL)
2012             /* *ABS* is always the first output section statement.  */
2013             after = (void *) lang_os_list.head;
2014         }
2015
2016       /* All sections in an executable must be aligned to a page boundary.
2017          In a relocatable link, just preserve the incoming alignment; the
2018          address is discarded by lang_insert_orphan in that case, anyway.  */
2019       address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2020       os = lang_insert_orphan (s, secname, constraint, after, place, address,
2021                                &add_child);
2022       if (bfd_link_relocatable (&link_info))
2023         {
2024           os->section_alignment = exp_intop (1U << s->alignment_power);
2025           os->bfd_section->alignment_power = s->alignment_power;
2026         }
2027     }
2028
2029   /* If the section name has a '\$', sort it with the other '\$'
2030      sections.  */
2031   for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2032     {
2033       lang_input_section_type *ls;
2034       const char *lname;
2035
2036       if ((*pl)->header.type != lang_input_section_enum)
2037         continue;
2038
2039       ls = &(*pl)->input_section;
2040
2041       lname = bfd_section_name (ls->section);
2042       if (strchr (lname, '\$') != NULL
2043           && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2044         break;
2045     }
2046
2047   if (add_child.head != NULL)
2048     {
2049       *add_child.tail = *pl;
2050       *pl = add_child.head;
2051     }
2052
2053   return os;
2054 }
2055
2056 static bool
2057 gld${EMULATION_NAME}_open_dynamic_archive
2058   (const char *arch ATTRIBUTE_UNUSED,
2059    search_dirs_type *search,
2060    lang_input_statement_type *entry)
2061 {
2062   static const struct
2063     {
2064       const char * format;
2065       bool use_prefix;
2066     }
2067   libname_fmt [] =
2068     {
2069       /* Preferred explicit import library for dll's.  */
2070       { "lib%s.dll.a", false },
2071       /* Alternate explicit import library for dll's.  */
2072       { "%s.dll.a", false },
2073       /* "libfoo.a" could be either an import lib or a static lib.
2074          For backwards compatibility, libfoo.a needs to precede
2075          libfoo.dll and foo.dll in the search.  */
2076       { "lib%s.a", false },
2077       /* The 'native' spelling of an import lib name is "foo.lib".  */
2078       { "%s.lib", false },
2079       /* PR 22948 - Check for an import library.  */
2080       { "lib%s.lib", false },
2081 #ifdef DLL_SUPPORT
2082       /* Try "<prefix>foo.dll" (preferred dll name, if specified).  */
2083       { "%s%s.dll", true },
2084 #endif
2085       /* Try "libfoo.dll" (default preferred dll name).  */
2086       { "lib%s.dll", false },
2087       /* Finally try 'native' dll name "foo.dll".  */
2088       {  "%s.dll", false },
2089       /* Note: If adding more formats to this table, make sure to check to
2090          see if their length is longer than libname_fmt[0].format, and if
2091          so, update the call to xmalloc() below.  */
2092       { NULL, false }
2093     };
2094   static unsigned int format_max_len = 0;
2095   const char * filename;
2096   char * full_string;
2097   char * base_string;
2098   unsigned int i;
2099
2100
2101   if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2102     return false;
2103
2104   filename = entry->filename;
2105
2106   if (format_max_len == 0)
2107     /* We need to allow space in the memory that we are going to allocate
2108        for the characters in the format string.  Since the format array is
2109        static we only need to calculate this information once.  In theory
2110        this value could also be computed statically, but this introduces
2111        the possibility for a discrepancy and hence a possible memory
2112        corruption.  The lengths we compute here will be too long because
2113        they will include any formating characters (%s) in the strings, but
2114        this will not matter.  */
2115     for (i = 0; libname_fmt[i].format; i++)
2116       if (format_max_len < strlen (libname_fmt[i].format))
2117         format_max_len = strlen (libname_fmt[i].format);
2118
2119   full_string = xmalloc (strlen (search->name)
2120                          + strlen (filename)
2121                          + format_max_len
2122 #ifdef DLL_SUPPORT
2123                          + (pep_dll_search_prefix
2124                             ? strlen (pep_dll_search_prefix) : 0)
2125 #endif
2126                          /* Allow for the terminating NUL and for the path
2127                             separator character that is inserted between
2128                             search->name and the start of the format string.  */
2129                          + 2);
2130
2131   sprintf (full_string, "%s/", search->name);
2132   base_string = full_string + strlen (full_string);
2133
2134   for (i = 0; libname_fmt[i].format; i++)
2135     {
2136 #ifdef DLL_SUPPORT
2137       if (libname_fmt[i].use_prefix)
2138         {
2139           if (!pep_dll_search_prefix)
2140             continue;
2141           sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
2142         }
2143       else
2144 #endif
2145         sprintf (base_string, libname_fmt[i].format, filename);
2146
2147       if (ldfile_try_open_bfd (full_string, entry))
2148         break;
2149     }
2150
2151   if (!libname_fmt[i].format)
2152     {
2153       free (full_string);
2154       return false;
2155     }
2156
2157   entry->filename = full_string;
2158
2159   return true;
2160 }
2161
2162 static int
2163 gld${EMULATION_NAME}_find_potential_libraries
2164   (char *name, lang_input_statement_type *entry)
2165 {
2166   return ldfile_open_file_search (name, entry, "", ".lib");
2167 }
2168 \f
2169 static char *
2170 gld${EMULATION_NAME}_get_script (int *isfile)
2171 EOF
2172
2173 if test x"$COMPILE_IN" = xyes
2174 then
2175 # Scripts compiled in.
2176
2177 # sed commands to quote an ld script as a C string.
2178 sc="-f stringify.sed"
2179
2180 fragment <<EOF
2181 {
2182   *isfile = 0;
2183
2184   if (bfd_link_relocatable (&link_info) && config.build_constructors)
2185     return
2186 EOF
2187 sed $sc ldscripts/${EMULATION_NAME}.xu                  >> e${EMULATION_NAME}.c
2188 echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2189 sed $sc ldscripts/${EMULATION_NAME}.xr                  >> e${EMULATION_NAME}.c
2190 echo '  ; else if (!config.text_read_only) return'      >> e${EMULATION_NAME}.c
2191 sed $sc ldscripts/${EMULATION_NAME}.xbn                 >> e${EMULATION_NAME}.c
2192 echo '  ; else if (!config.magic_demand_paged) return'  >> e${EMULATION_NAME}.c
2193 sed $sc ldscripts/${EMULATION_NAME}.xn                  >> e${EMULATION_NAME}.c
2194 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2195 echo '  ; else if (link_info.pei386_auto_import == 1 && link_info.pei386_runtime_pseudo_reloc != 2) return'     >> e${EMULATION_NAME}.c
2196 sed $sc ldscripts/${EMULATION_NAME}.xa                  >> e${EMULATION_NAME}.c
2197 fi
2198 echo '  ; else return'                                  >> e${EMULATION_NAME}.c
2199 sed $sc ldscripts/${EMULATION_NAME}.x                   >> e${EMULATION_NAME}.c
2200 echo '; }'                                              >> e${EMULATION_NAME}.c
2201
2202 else
2203 # Scripts read from the filesystem.
2204
2205 fragment <<EOF
2206 {
2207   *isfile = 1;
2208
2209   if (bfd_link_relocatable (&link_info) && config.build_constructors)
2210     return "ldscripts/${EMULATION_NAME}.xu";
2211   else if (bfd_link_relocatable (&link_info))
2212     return "ldscripts/${EMULATION_NAME}.xr";
2213   else if (!config.text_read_only)
2214     return "ldscripts/${EMULATION_NAME}.xbn";
2215   else if (!config.magic_demand_paged)
2216     return "ldscripts/${EMULATION_NAME}.xn";
2217 EOF
2218 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2219 fragment <<EOF
2220   else if (link_info.pei386_auto_import == 1
2221            && link_info.pei386_runtime_pseudo_reloc != 2)
2222     return "ldscripts/${EMULATION_NAME}.xa";
2223 EOF
2224 fi
2225 fragment <<EOF
2226   else
2227     return "ldscripts/${EMULATION_NAME}.x";
2228 }
2229 EOF
2230 fi
2231
2232 LDEMUL_AFTER_PARSE=gld${EMULATION_NAME}_after_parse
2233 LDEMUL_AFTER_OPEN=gld${EMULATION_NAME}_after_open
2234 LDEMUL_BEFORE_ALLOCATION=gld${EMULATION_NAME}_before_allocation
2235 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
2236 LDEMUL_OPEN_DYNAMIC_ARCHIVE=gld${EMULATION_NAME}_open_dynamic_archive
2237 LDEMUL_PLACE_ORPHAN=gld${EMULATION_NAME}_place_orphan
2238 LDEMUL_SET_SYMBOLS=gld${EMULATION_NAME}_set_symbols
2239 LDEMUL_ADD_OPTIONS=gld${EMULATION_NAME}_add_options
2240 LDEMUL_HANDLE_OPTION=gld${EMULATION_NAME}_handle_option
2241 LDEMUL_UNRECOGNIZED_FILE=gld${EMULATION_NAME}_unrecognized_file
2242 LDEMUL_LIST_OPTIONS=gld${EMULATION_NAME}_list_options
2243 LDEMUL_RECOGNIZED_FILE=gld${EMULATION_NAME}_recognized_file
2244 LDEMUL_FIND_POTENTIAL_LIBRARIES=gld${EMULATION_NAME}_find_potential_libraries
2245
2246 source_em ${srcdir}/emultempl/emulation.em