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  1. /* Support for the generic parts of PE/PEI, for BFD.
  2.    Copyright (C) 1995-2015 Free Software Foundation, Inc.
  3.    Written by Cygnus Solutions.
  4.  
  5.    This file is part of BFD, the Binary File Descriptor library.
  6.  
  7.    This program is free software; you can redistribute it and/or modify
  8.    it under the terms of the GNU General Public License as published by
  9.    the Free Software Foundation; either version 3 of the License, or
  10.    (at your option) any later version.
  11.  
  12.    This program is distributed in the hope that it will be useful,
  13.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15.    GNU General Public License for more details.
  16.  
  17.    You should have received a copy of the GNU General Public License
  18.    along with this program; if not, write to the Free Software
  19.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20.    MA 02110-1301, USA.  */
  21.  
  22.  
  23. /* Most of this hacked by  Steve Chamberlain,
  24.                         sac@cygnus.com
  25.  
  26.    PE/PEI rearrangement (and code added): Donn Terry
  27.                                        Softway Systems, Inc.  */
  28.  
  29. /* Hey look, some documentation [and in a place you expect to find it]!
  30.  
  31.    The main reference for the pei format is "Microsoft Portable Executable
  32.    and Common Object File Format Specification 4.1".  Get it if you need to
  33.    do some serious hacking on this code.
  34.  
  35.    Another reference:
  36.    "Peering Inside the PE: A Tour of the Win32 Portable Executable
  37.    File Format", MSJ 1994, Volume 9.
  38.  
  39.    The *sole* difference between the pe format and the pei format is that the
  40.    latter has an MSDOS 2.0 .exe header on the front that prints the message
  41.    "This app must be run under Windows." (or some such).
  42.    (FIXME: Whether that statement is *really* true or not is unknown.
  43.    Are there more subtle differences between pe and pei formats?
  44.    For now assume there aren't.  If you find one, then for God sakes
  45.    document it here!)
  46.  
  47.    The Microsoft docs use the word "image" instead of "executable" because
  48.    the former can also refer to a DLL (shared library).  Confusion can arise
  49.    because the `i' in `pei' also refers to "image".  The `pe' format can
  50.    also create images (i.e. executables), it's just that to run on a win32
  51.    system you need to use the pei format.
  52.  
  53.    FIXME: Please add more docs here so the next poor fool that has to hack
  54.    on this code has a chance of getting something accomplished without
  55.    wasting too much time.  */
  56.  
  57. #include "libpei.h"
  58.  
  59. static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data) (bfd *, void *) =
  60. #ifndef coff_bfd_print_private_bfd_data
  61.      NULL;
  62. #else
  63.      coff_bfd_print_private_bfd_data;
  64. #undef coff_bfd_print_private_bfd_data
  65. #endif
  66.  
  67. static bfd_boolean                      pe_print_private_bfd_data (bfd *, void *);
  68. #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
  69.  
  70. static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data) (bfd *, bfd *) =
  71. #ifndef coff_bfd_copy_private_bfd_data
  72.      NULL;
  73. #else
  74.      coff_bfd_copy_private_bfd_data;
  75. #undef coff_bfd_copy_private_bfd_data
  76. #endif
  77.  
  78. static bfd_boolean                     pe_bfd_copy_private_bfd_data (bfd *, bfd *);
  79. #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
  80.  
  81. #define coff_mkobject      pe_mkobject
  82. #define coff_mkobject_hook pe_mkobject_hook
  83.  
  84. #ifdef COFF_IMAGE_WITH_PE
  85. /* This structure contains static variables used by the ILF code.  */
  86. typedef asection * asection_ptr;
  87.  
  88. typedef struct
  89. {
  90.   bfd *                 abfd;
  91.   bfd_byte *            data;
  92.   struct bfd_in_memory * bim;
  93.   unsigned short        magic;
  94.  
  95.   arelent *             reltab;
  96.   unsigned int          relcount;
  97.  
  98.   coff_symbol_type *    sym_cache;
  99.   coff_symbol_type *    sym_ptr;
  100.   unsigned int          sym_index;
  101.  
  102.   unsigned int *        sym_table;
  103.   unsigned int *        table_ptr;
  104.  
  105.   combined_entry_type * native_syms;
  106.   combined_entry_type * native_ptr;
  107.  
  108.   coff_symbol_type **   sym_ptr_table;
  109.   coff_symbol_type **   sym_ptr_ptr;
  110.  
  111.   unsigned int          sec_index;
  112.  
  113.   char *                string_table;
  114.   char *                string_ptr;
  115.   char *                end_string_ptr;
  116.  
  117.   SYMENT *              esym_table;
  118.   SYMENT *              esym_ptr;
  119.  
  120.   struct internal_reloc * int_reltab;
  121. }
  122. pe_ILF_vars;
  123. #endif /* COFF_IMAGE_WITH_PE */
  124.  
  125. const bfd_target *coff_real_object_p
  126.   (bfd *, unsigned, struct internal_filehdr *, struct internal_aouthdr *);
  128. #ifndef NO_COFF_RELOCS
  129. static void
  130. coff_swap_reloc_in (bfd * abfd, void * src, void * dst)
  131. {
  132.   RELOC *reloc_src = (RELOC *) src;
  133.   struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
  134.  
  135.   reloc_dst->r_vaddr  = H_GET_32 (abfd, reloc_src->r_vaddr);
  136.   reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx);
  137.   reloc_dst->r_type   = H_GET_16 (abfd, reloc_src->r_type);
  138. #ifdef SWAP_IN_RELOC_OFFSET
  139.   reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET (abfd, reloc_src->r_offset);
  140. #endif
  141. }
  142.  
  143. static unsigned int
  144. coff_swap_reloc_out (bfd * abfd, void * src, void * dst)
  145. {
  146.   struct internal_reloc *reloc_src = (struct internal_reloc *) src;
  147.   struct external_reloc *reloc_dst = (struct external_reloc *) dst;
  148.  
  149.   H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
  150.   H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
  151.   H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type);
  152.  
  153. #ifdef SWAP_OUT_RELOC_OFFSET
  154.   SWAP_OUT_RELOC_OFFSET (abfd, reloc_src->r_offset, reloc_dst->r_offset);
  155. #endif
  156. #ifdef SWAP_OUT_RELOC_EXTRA
  157.   SWAP_OUT_RELOC_EXTRA (abfd, reloc_src, reloc_dst);
  158. #endif
  159.   return RELSZ;
  160. }
  161. #endif /* not NO_COFF_RELOCS */
  162.  
  163. #ifdef COFF_IMAGE_WITH_PE
  164. #undef FILHDR
  165. #define FILHDR struct external_PEI_IMAGE_hdr
  166. #endif
  167.  
  168. static void
  169. coff_swap_filehdr_in (bfd * abfd, void * src, void * dst)
  170. {
  171.   FILHDR *filehdr_src = (FILHDR *) src;
  172.   struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
  173.  
  174.   filehdr_dst->f_magic  = H_GET_16 (abfd, filehdr_src->f_magic);
  175.   filehdr_dst->f_nscns  = H_GET_16 (abfd, filehdr_src->f_nscns);
  176.   filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->f_timdat);
  177.   filehdr_dst->f_nsyms  = H_GET_32 (abfd, filehdr_src->f_nsyms);
  178.   filehdr_dst->f_flags  = H_GET_16 (abfd, filehdr_src->f_flags);
  179.   filehdr_dst->f_symptr = H_GET_32 (abfd, filehdr_src->f_symptr);
  180.  
  181.   /* Other people's tools sometimes generate headers with an nsyms but
  182.      a zero symptr.  */
  183.   if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0)
  184.     {
  185.       filehdr_dst->f_nsyms = 0;
  186.       filehdr_dst->f_flags |= F_LSYMS;
  187.     }
  188.  
  189.   filehdr_dst->f_opthdr = H_GET_16 (abfd, filehdr_src-> f_opthdr);
  190. }
  191.  
  192. #ifdef COFF_IMAGE_WITH_PE
  193. # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
  194. #elif defined COFF_WITH_pex64
  195. # define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out
  196. #elif defined COFF_WITH_pep
  197. # define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out
  198. #else
  199. # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
  200. #endif
  201.  
  202. static void
  203. coff_swap_scnhdr_in (bfd * abfd, void * ext, void * in)
  204. {
  205.   SCNHDR *scnhdr_ext = (SCNHDR *) ext;
  206.   struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
  207.  
  208.   memcpy (scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name));
  209.  
  210.   scnhdr_int->s_vaddr   = GET_SCNHDR_VADDR (abfd, scnhdr_ext->s_vaddr);
  211.   scnhdr_int->s_paddr   = GET_SCNHDR_PADDR (abfd, scnhdr_ext->s_paddr);
  212.   scnhdr_int->s_size    = GET_SCNHDR_SIZE (abfd, scnhdr_ext->s_size);
  213.   scnhdr_int->s_scnptr  = GET_SCNHDR_SCNPTR (abfd, scnhdr_ext->s_scnptr);
  214.   scnhdr_int->s_relptr  = GET_SCNHDR_RELPTR (abfd, scnhdr_ext->s_relptr);
  215.   scnhdr_int->s_lnnoptr = GET_SCNHDR_LNNOPTR (abfd, scnhdr_ext->s_lnnoptr);
  216.   scnhdr_int->s_flags   = H_GET_32 (abfd, scnhdr_ext->s_flags);
  217.  
  218.   /* MS handles overflow of line numbers by carrying into the reloc
  219.      field (it appears).  Since it's supposed to be zero for PE
  220.      *IMAGE* format, that's safe.  This is still a bit iffy.  */
  221. #ifdef COFF_IMAGE_WITH_PE
  222.   scnhdr_int->s_nlnno = (H_GET_16 (abfd, scnhdr_ext->s_nlnno)
  223.                          + (H_GET_16 (abfd, scnhdr_ext->s_nreloc) << 16));
  224.   scnhdr_int->s_nreloc = 0;
  225. #else
  226.   scnhdr_int->s_nreloc = H_GET_16 (abfd, scnhdr_ext->s_nreloc);
  227.   scnhdr_int->s_nlnno = H_GET_16 (abfd, scnhdr_ext->s_nlnno);
  228. #endif
  229.  
  230.   if (scnhdr_int->s_vaddr != 0)
  231.     {
  232.       scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase;
  233.       /* Do not cut upper 32-bits for 64-bit vma.  */
  234. #ifndef COFF_WITH_pex64
  235.       scnhdr_int->s_vaddr &= 0xffffffff;
  236. #endif
  237.     }
  238.  
  239. #ifndef COFF_NO_HACK_SCNHDR_SIZE
  240.   /* If this section holds uninitialized data and is from an object file
  241.      or from an executable image that has not initialized the field,
  242.      or if the image is an executable file and the physical size is padded,
  243.      use the virtual size (stored in s_paddr) instead.  */
  244.   if (scnhdr_int->s_paddr > 0
  245.       && (((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0
  246.            && (! bfd_pei_p (abfd) || scnhdr_int->s_size == 0))
  247.           || (bfd_pei_p (abfd) && (scnhdr_int->s_size > scnhdr_int->s_paddr))))
  248.   /* This code used to set scnhdr_int->s_paddr to 0.  However,
  249.      coff_set_alignment_hook stores s_paddr in virt_size, which
  250.      only works if it correctly holds the virtual size of the
  251.      section.  */
  252.     scnhdr_int->s_size = scnhdr_int->s_paddr;
  253. #endif
  254. }
  255.  
  256. static bfd_boolean
  257. pe_mkobject (bfd * abfd)
  258. {
  259.   pe_data_type *pe;
  260.   bfd_size_type amt = sizeof (pe_data_type);
  261.  
  262.   abfd->tdata.pe_obj_data = (struct pe_tdata *) bfd_zalloc (abfd, amt);
  263.  
  264.   if (abfd->tdata.pe_obj_data == 0)
  265.     return FALSE;
  266.  
  267.   pe = pe_data (abfd);
  268.  
  269.   pe->coff.pe = 1;
  270.  
  271.   /* in_reloc_p is architecture dependent.  */
  272.   pe->in_reloc_p = in_reloc_p;
  273.  
  274.   memset (& pe->pe_opthdr, 0, sizeof pe->pe_opthdr);
  275.   return TRUE;
  276. }
  277.  
  278. /* Create the COFF backend specific information.  */
  279.  
  280. static void *
  281. pe_mkobject_hook (bfd * abfd,
  282.                   void * filehdr,
  283.                   void * aouthdr ATTRIBUTE_UNUSED)
  284. {
  285.   struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
  286.   pe_data_type *pe;
  287.  
  288.   if (! pe_mkobject (abfd))
  289.     return NULL;
  290.  
  291.   pe = pe_data (abfd);
  292.   pe->coff.sym_filepos = internal_f->f_symptr;
  293.   /* These members communicate important constants about the symbol
  294.      table to GDB's symbol-reading code.  These `constants'
  295.      unfortunately vary among coff implementations...  */
  296.   pe->coff.local_n_btmask = N_BTMASK;
  297.   pe->coff.local_n_btshft = N_BTSHFT;
  298.   pe->coff.local_n_tmask = N_TMASK;
  299.   pe->coff.local_n_tshift = N_TSHIFT;
  300.   pe->coff.local_symesz = SYMESZ;
  301.   pe->coff.local_auxesz = AUXESZ;
  302.   pe->coff.local_linesz = LINESZ;
  303.  
  304.   pe->coff.timestamp = internal_f->f_timdat;
  305.  
  306.   obj_raw_syment_count (abfd) =
  307.     obj_conv_table_size (abfd) =
  308.       internal_f->f_nsyms;
  309.  
  310.   pe->real_flags = internal_f->f_flags;
  311.  
  312.   if ((internal_f->f_flags & F_DLL) != 0)
  313.     pe->dll = 1;
  314.  
  315.   if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
  316.     abfd->flags |= HAS_DEBUG;
  317.  
  318. #ifdef COFF_IMAGE_WITH_PE
  319.   if (aouthdr)
  320.     pe->pe_opthdr = ((struct internal_aouthdr *) aouthdr)->pe;
  321. #endif
  322.  
  323. #ifdef ARM
  324.   if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
  325.     coff_data (abfd) ->flags = 0;
  326. #endif
  327.  
  328.   return (void *) pe;
  329. }
  330.  
  331. static bfd_boolean
  332. pe_print_private_bfd_data (bfd *abfd, void * vfile)
  333. {
  334.   FILE *file = (FILE *) vfile;
  335.  
  336.   if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile))
  337.     return FALSE;
  338.  
  339.   if (pe_saved_coff_bfd_print_private_bfd_data == NULL)
  340.     return TRUE;
  341.  
  342.   fputc ('\n', file);
  343.  
  344.   return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile);
  345. }
  346.  
  347. /* Copy any private info we understand from the input bfd
  348.    to the output bfd.  */
  349.  
  350. static bfd_boolean
  351. pe_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
  352. {
  353.   /* PR binutils/716: Copy the large address aware flag.
  354.      XXX: Should we be copying other flags or other fields in the pe_data()
  355.      structure ?  */
  356.   if (pe_data (obfd) != NULL
  357.       && pe_data (ibfd) != NULL
  358.       && pe_data (ibfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
  359.     pe_data (obfd)->real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
  360.  
  361.   if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd))
  362.     return FALSE;
  363.  
  364.   if (pe_saved_coff_bfd_copy_private_bfd_data)
  365.     return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd);
  366.  
  367.   return TRUE;
  368. }
  369.  
  370. #define coff_bfd_copy_private_section_data \
  371.   _bfd_XX_bfd_copy_private_section_data
  372.  
  373. #define coff_get_symbol_info _bfd_XX_get_symbol_info
  374.  
  375. #ifdef COFF_IMAGE_WITH_PE
  377. /* Code to handle Microsoft's Image Library Format.
  378.    Also known as LINK6 format.
  379.    Documentation about this format can be found at:
  380.  
  381.    http://msdn.microsoft.com/library/specs/pecoff_section8.htm  */
  382.  
  383. /* The following constants specify the sizes of the various data
  384.    structures that we have to create in order to build a bfd describing
  385.    an ILF object file.  The final "+ 1" in the definitions of SIZEOF_IDATA6
  386.    and SIZEOF_IDATA7 below is to allow for the possibility that we might
  387.    need a padding byte in order to ensure 16 bit alignment for the section's
  388.    contents.
  389.  
  390.    The value for SIZEOF_ILF_STRINGS is computed as follows:
  391.  
  392.       There will be NUM_ILF_SECTIONS section symbols.  Allow 9 characters
  393.       per symbol for their names (longest section name is .idata$x).
  394.  
  395.       There will be two symbols for the imported value, one the symbol name
  396.       and one with _imp__ prefixed.  Allowing for the terminating nul's this
  397.       is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
  398.  
  399.       The strings in the string table must start STRING__SIZE_SIZE bytes into
  400.       the table in order to for the string lookup code in coffgen/coffcode to
  401.       work.  */
  402. #define NUM_ILF_RELOCS          8
  403. #define NUM_ILF_SECTIONS        6
  404. #define NUM_ILF_SYMS            (2 + NUM_ILF_SECTIONS)
  405.  
  406. #define SIZEOF_ILF_SYMS          (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
  407. #define SIZEOF_ILF_SYM_TABLE     (NUM_ILF_SYMS * sizeof (* vars.sym_table))
  408. #define SIZEOF_ILF_NATIVE_SYMS   (NUM_ILF_SYMS * sizeof (* vars.native_syms))
  409. #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
  410. #define SIZEOF_ILF_EXT_SYMS      (NUM_ILF_SYMS * sizeof (* vars.esym_table))
  411. #define SIZEOF_ILF_RELOCS        (NUM_ILF_RELOCS * sizeof (* vars.reltab))
  412. #define SIZEOF_ILF_INT_RELOCS    (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
  413. #define SIZEOF_ILF_STRINGS       (strlen (symbol_name) * 2 + 8 \
  414.                                         + 21 + strlen (source_dll) \
  415.                                         + NUM_ILF_SECTIONS * 9 \
  416.                                         + STRING_SIZE_SIZE)
  417. #define SIZEOF_IDATA2           (5 * 4)
  418.  
  419. /* For PEx64 idata4 & 5 have thumb size of 8 bytes.  */
  420. #ifdef COFF_WITH_pex64
  421. #define SIZEOF_IDATA4           (2 * 4)
  422. #define SIZEOF_IDATA5           (2 * 4)
  423. #else
  424. #define SIZEOF_IDATA4           (1 * 4)
  425. #define SIZEOF_IDATA5           (1 * 4)
  426. #endif
  427.  
  428. #define SIZEOF_IDATA6           (2 + strlen (symbol_name) + 1 + 1)
  429. #define SIZEOF_IDATA7           (strlen (source_dll) + 1 + 1)
  430. #define SIZEOF_ILF_SECTIONS     (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
  431.  
  432. #define ILF_DATA_SIZE                           \
  433.     + SIZEOF_ILF_SYMS                           \
  434.     + SIZEOF_ILF_SYM_TABLE                      \
  435.     + SIZEOF_ILF_NATIVE_SYMS                    \
  436.     + SIZEOF_ILF_SYM_PTR_TABLE                  \
  437.     + SIZEOF_ILF_EXT_SYMS                       \
  438.     + SIZEOF_ILF_RELOCS                         \
  439.     + SIZEOF_ILF_INT_RELOCS                     \
  440.     + SIZEOF_ILF_STRINGS                        \
  441.     + SIZEOF_IDATA2                             \
  442.     + SIZEOF_IDATA4                             \
  443.     + SIZEOF_IDATA5                             \
  444.     + SIZEOF_IDATA6                             \
  445.     + SIZEOF_IDATA7                             \
  446.     + SIZEOF_ILF_SECTIONS                       \
  447.     + MAX_TEXT_SECTION_SIZE
  448.  
  449. /* Create an empty relocation against the given symbol.  */
  450.  
  451. static void
  452. pe_ILF_make_a_symbol_reloc (pe_ILF_vars *               vars,
  453.                             bfd_vma                     address,
  454.                             bfd_reloc_code_real_type    reloc,
  455.                             struct bfd_symbol **        sym,
  456.                             unsigned int                sym_index)
  457. {
  458.   arelent * entry;
  459.   struct internal_reloc * internal;
  460.  
  461.   entry = vars->reltab + vars->relcount;
  462.   internal = vars->int_reltab + vars->relcount;
  463.  
  464.   entry->address     = address;
  465.   entry->addend      = 0;
  466.   entry->howto       = bfd_reloc_type_lookup (vars->abfd, reloc);
  467.   entry->sym_ptr_ptr = sym;
  468.  
  469.   internal->r_vaddr  = address;
  470.   internal->r_symndx = sym_index;
  471.   internal->r_type   = entry->howto->type;
  472.  
  473.   vars->relcount ++;
  474.  
  475.   BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS);
  476. }
  477.  
  478. /* Create an empty relocation against the given section.  */
  479.  
  480. static void
  481. pe_ILF_make_a_reloc (pe_ILF_vars *             vars,
  482.                      bfd_vma                   address,
  483.                      bfd_reloc_code_real_type  reloc,
  484.                      asection_ptr              sec)
  485. {
  486.   pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr,
  487.                               coff_section_data (vars->abfd, sec)->i);
  488. }
  489.  
  490. /* Move the queued relocs into the given section.  */
  491.  
  492. static void
  493. pe_ILF_save_relocs (pe_ILF_vars * vars,
  494.                     asection_ptr  sec)
  495. {
  496.   /* Make sure that there is somewhere to store the internal relocs.  */
  497.   if (coff_section_data (vars->abfd, sec) == NULL)
  498.     /* We should probably return an error indication here.  */
  499.     abort ();
  500.  
  501.   coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab;
  502.   coff_section_data (vars->abfd, sec)->keep_relocs = TRUE;
  503.  
  504.   sec->relocation  = vars->reltab;
  505.   sec->reloc_count = vars->relcount;
  506.   sec->flags      |= SEC_RELOC;
  507.  
  508.   vars->reltab     += vars->relcount;
  509.   vars->int_reltab += vars->relcount;
  510.   vars->relcount   = 0;
  511.  
  512.   BFD_ASSERT ((bfd_byte *) vars->int_reltab < (bfd_byte *) vars->string_table);
  513. }
  514.  
  515. /* Create a global symbol and add it to the relevant tables.  */
  516.  
  517. static void
  518. pe_ILF_make_a_symbol (pe_ILF_vars *  vars,
  519.                       const char *   prefix,
  520.                       const char *   symbol_name,
  521.                       asection_ptr   section,
  522.                       flagword       extra_flags)
  523. {
  524.   coff_symbol_type * sym;
  525.   combined_entry_type * ent;
  526.   SYMENT * esym;
  527.   unsigned short sclass;
  528.  
  529.   if (extra_flags & BSF_LOCAL)
  530.     sclass = C_STAT;
  531.   else
  532.     sclass = C_EXT;
  533.  
  534. #ifdef THUMBPEMAGIC
  535.   if (vars->magic == THUMBPEMAGIC)
  536.     {
  537.       if (extra_flags & BSF_FUNCTION)
  538.         sclass = C_THUMBEXTFUNC;
  539.       else if (extra_flags & BSF_LOCAL)
  540.         sclass = C_THUMBSTAT;
  541.       else
  542.         sclass = C_THUMBEXT;
  543.     }
  544. #endif
  545.  
  546.   BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS);
  547.  
  548.   sym = vars->sym_ptr;
  549.   ent = vars->native_ptr;
  550.   esym = vars->esym_ptr;
  551.  
  552.   /* Copy the symbol's name into the string table.  */
  553.   sprintf (vars->string_ptr, "%s%s", prefix, symbol_name);
  554.  
  555.   if (section == NULL)
  556.     section = bfd_und_section_ptr;
  557.  
  558.   /* Initialise the external symbol.  */
  559.   H_PUT_32 (vars->abfd, vars->string_ptr - vars->string_table,
  560.             esym->e.e.e_offset);
  561.   H_PUT_16 (vars->abfd, section->target_index, esym->e_scnum);
  562.   esym->e_sclass[0] = sclass;
  563.  
  564.   /* The following initialisations are unnecessary - the memory is
  565.      zero initialised.  They are just kept here as reminders.  */
  566.  
  567.   /* Initialise the internal symbol structure.  */
  568.   ent->u.syment.n_sclass          = sclass;
  569.   ent->u.syment.n_scnum           = section->target_index;
  570.   ent->u.syment._n._n_n._n_offset = (bfd_hostptr_t) sym;
  571.   ent->is_sym = TRUE;
  572.  
  573.   sym->symbol.the_bfd = vars->abfd;
  574.   sym->symbol.name    = vars->string_ptr;
  575.   sym->symbol.flags   = BSF_EXPORT | BSF_GLOBAL | extra_flags;
  576.   sym->symbol.section = section;
  577.   sym->native         = ent;
  578.  
  579.   * vars->table_ptr = vars->sym_index;
  580.   * vars->sym_ptr_ptr = sym;
  581.  
  582.   /* Adjust pointers for the next symbol.  */
  583.   vars->sym_index ++;
  584.   vars->sym_ptr ++;
  585.   vars->sym_ptr_ptr ++;
  586.   vars->table_ptr ++;
  587.   vars->native_ptr ++;
  588.   vars->esym_ptr ++;
  589.   vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1;
  590.  
  591.   BFD_ASSERT (vars->string_ptr < vars->end_string_ptr);
  592. }
  593.  
  594. /* Create a section.  */
  595.  
  596. static asection_ptr
  597. pe_ILF_make_a_section (pe_ILF_vars * vars,
  598.                        const char *  name,
  599.                        unsigned int  size,
  600.                        flagword      extra_flags)
  601. {
  602.   asection_ptr sec;
  603.   flagword     flags;
  604.  
  605.   sec = bfd_make_section_old_way (vars->abfd, name);
  606.   if (sec == NULL)
  607.     return NULL;
  608.  
  609.   flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY;
  610.  
  611.   bfd_set_section_flags (vars->abfd, sec, flags | extra_flags);
  612.  
  613.   (void) bfd_set_section_alignment (vars->abfd, sec, 2);
  614.  
  615.   /* Check that we will not run out of space.  */
  616.   BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size);
  617.  
  618.   /* Set the section size and contents.  The actual
  619.      contents are filled in by our parent.  */
  620.   bfd_set_section_size (vars->abfd, sec, (bfd_size_type) size);
  621.   sec->contents = vars->data;
  622.   sec->target_index = vars->sec_index ++;
  623.  
  624.   /* Advance data pointer in the vars structure.  */
  625.   vars->data += size;
  626.  
  627.   /* Skip the padding byte if it was not needed.
  628.      The logic here is that if the string length is odd,
  629.      then the entire string length, including the null byte,
  630.      is even and so the extra, padding byte, is not needed.  */
  631.   if (size & 1)
  632.     vars->data --;
  633.  
  634. # if (GCC_VERSION >= 3000)
  635.   /* PR 18758: See note in pe_ILF_buid_a_bfd.  We must make sure that we
  636.      preserve host alignment requirements.  We test 'size' rather than
  637.      vars.data as we cannot perform binary arithmetic on pointers.  We assume
  638.      that vars.data was sufficiently aligned upon entry to this function.
  639.      The BFD_ASSERTs in this functions will warn us if we run out of room,
  640.      but we should already have enough padding built in to ILF_DATA_SIZE.  */
  641.   {
  642.     unsigned int alignment = __alignof__ (struct coff_section_tdata);
  643.  
  644.     if (size & (alignment - 1))
  645.       vars->data += alignment - (size & (alignment - 1));
  646.   }
  647. #endif
  648.   /* Create a coff_section_tdata structure for our use.  */
  649.   sec->used_by_bfd = (struct coff_section_tdata *) vars->data;
  650.   vars->data += sizeof (struct coff_section_tdata);
  651.  
  652.   BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size);
  653.  
  654.   /* Create a symbol to refer to this section.  */
  655.   pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL);
  656.  
  657.   /* Cache the index to the symbol in the coff_section_data structure.  */
  658.   coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1;
  659.  
  660.   return sec;
  661. }
  662.  
  663. /* This structure contains the code that goes into the .text section
  664.    in order to perform a jump into the DLL lookup table.  The entries
  665.    in the table are index by the magic number used to represent the
  666.    machine type in the PE file.  The contents of the data[] arrays in
  667.    these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
  668.    The SIZE field says how many bytes in the DATA array are actually
  669.    used.  The OFFSET field says where in the data array the address
  670.    of the .idata$5 section should be placed.  */
  671. #define MAX_TEXT_SECTION_SIZE 32
  672.  
  673. typedef struct
  674. {
  675.   unsigned short magic;
  676.   unsigned char  data[MAX_TEXT_SECTION_SIZE];
  677.   unsigned int   size;
  678.   unsigned int   offset;
  679. }
  680. jump_table;
  681.  
  682. static jump_table jtab[] =
  683. {
  684. #ifdef I386MAGIC
  685.   { I386MAGIC,
  686.     { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
  687.     8, 2
  688.   },
  689. #endif
  690.  
  691. #ifdef AMD64MAGIC
  692.   { AMD64MAGIC,
  693.     { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
  694.     8, 2
  695.   },
  696. #endif
  697.  
  698. #ifdef  MC68MAGIC
  699.   { MC68MAGIC,
  700.     { /* XXX fill me in */ },
  701.     0, 0
  702.   },
  703. #endif
  704.  
  705. #ifdef  MIPS_ARCH_MAGIC_WINCE
  706.   { MIPS_ARCH_MAGIC_WINCE,
  707.     { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
  708.       0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
  709.     16, 0
  710.   },
  711. #endif
  712.  
  713. #ifdef  SH_ARCH_MAGIC_WINCE
  714.   { SH_ARCH_MAGIC_WINCE,
  715.     { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
  716.       0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
  717.     12, 8
  718.   },
  719. #endif
  720.  
  721. #ifdef  ARMPEMAGIC
  722.   { ARMPEMAGIC,
  723.     { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
  724.       0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
  725.     12, 8
  726.   },
  727. #endif
  728.  
  729. #ifdef  THUMBPEMAGIC
  730.   { THUMBPEMAGIC,
  731.     { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
  732.       0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
  733.     16, 12
  734.   },
  735. #endif
  736.   { 0, { 0 }, 0, 0 }
  737. };
  738.  
  739. #ifndef NUM_ENTRIES
  740. #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
  741. #endif
  742.  
  743. /* Build a full BFD from the information supplied in a ILF object.  */
  744.  
  745. static bfd_boolean
  746. pe_ILF_build_a_bfd (bfd *           abfd,
  747.                     unsigned int    magic,
  748.                     char *          symbol_name,
  749.                     char *          source_dll,
  750.                     unsigned int    ordinal,
  751.                     unsigned int    types)
  752. {
  753.   bfd_byte *               ptr;
  754.   pe_ILF_vars              vars;
  755.   struct internal_filehdr  internal_f;
  756.   unsigned int             import_type;
  757.   unsigned int             import_name_type;
  758.   asection_ptr             id4, id5, id6 = NULL, text = NULL;
  759.   coff_symbol_type **      imp_sym;
  760.   unsigned int             imp_index;
  761.  
  762.   /* Decode and verify the types field of the ILF structure.  */
  763.   import_type = types & 0x3;
  764.   import_name_type = (types & 0x1c) >> 2;
  765.  
  766.   switch (import_type)
  767.     {
  768.     case IMPORT_CODE:
  769.     case IMPORT_DATA:
  770.       break;
  771.  
  772.     case IMPORT_CONST:
  773.       /* XXX code yet to be written.  */
  774.       _bfd_error_handler (_("%B: Unhandled import type; %x"),
  775.                           abfd, import_type);
  776.       return FALSE;
  777.  
  778.     default:
  779.       _bfd_error_handler (_("%B: Unrecognised import type; %x"),
  780.                           abfd, import_type);
  781.       return FALSE;
  782.     }
  783.  
  784.   switch (import_name_type)
  785.     {
  786.     case IMPORT_ORDINAL:
  787.     case IMPORT_NAME:
  788.     case IMPORT_NAME_NOPREFIX:
  789.     case IMPORT_NAME_UNDECORATE:
  790.       break;
  791.  
  792.     default:
  793.       _bfd_error_handler (_("%B: Unrecognised import name type; %x"),
  794.                           abfd, import_name_type);
  795.       return FALSE;
  796.     }
  797.  
  798.   /* Initialise local variables.
  799.  
  800.      Note these are kept in a structure rather than being
  801.      declared as statics since bfd frowns on global variables.
  802.  
  803.      We are going to construct the contents of the BFD in memory,
  804.      so allocate all the space that we will need right now.  */
  805.   vars.bim
  806.     = (struct bfd_in_memory *) bfd_malloc ((bfd_size_type) sizeof (*vars.bim));
  807.   if (vars.bim == NULL)
  808.     return FALSE;
  809.  
  810.   ptr = (bfd_byte *) bfd_zmalloc ((bfd_size_type) ILF_DATA_SIZE);
  811.   vars.bim->buffer = ptr;
  812.   vars.bim->size   = ILF_DATA_SIZE;
  813.   if (ptr == NULL)
  814.     goto error_return;
  815.  
  816.   /* Initialise the pointers to regions of the memory and the
  817.      other contents of the pe_ILF_vars structure as well.  */
  818.   vars.sym_cache = (coff_symbol_type *) ptr;
  819.   vars.sym_ptr   = (coff_symbol_type *) ptr;
  820.   vars.sym_index = 0;
  821.   ptr += SIZEOF_ILF_SYMS;
  822.  
  823.   vars.sym_table = (unsigned int *) ptr;
  824.   vars.table_ptr = (unsigned int *) ptr;
  825.   ptr += SIZEOF_ILF_SYM_TABLE;
  826.  
  827.   vars.native_syms = (combined_entry_type *) ptr;
  828.   vars.native_ptr  = (combined_entry_type *) ptr;
  829.   ptr += SIZEOF_ILF_NATIVE_SYMS;
  830.  
  831.   vars.sym_ptr_table = (coff_symbol_type **) ptr;
  832.   vars.sym_ptr_ptr   = (coff_symbol_type **) ptr;
  833.   ptr += SIZEOF_ILF_SYM_PTR_TABLE;
  834.  
  835.   vars.esym_table = (SYMENT *) ptr;
  836.   vars.esym_ptr   = (SYMENT *) ptr;
  837.   ptr += SIZEOF_ILF_EXT_SYMS;
  838.  
  839.   vars.reltab   = (arelent *) ptr;
  840.   vars.relcount = 0;
  841.   ptr += SIZEOF_ILF_RELOCS;
  842.  
  843.   vars.int_reltab  = (struct internal_reloc *) ptr;
  844.   ptr += SIZEOF_ILF_INT_RELOCS;
  845.  
  846.   vars.string_table = (char *) ptr;
  847.   vars.string_ptr   = (char *) ptr + STRING_SIZE_SIZE;
  848.   ptr += SIZEOF_ILF_STRINGS;
  849.   vars.end_string_ptr = (char *) ptr;
  850.  
  851.   /* The remaining space in bim->buffer is used
  852.      by the pe_ILF_make_a_section() function.  */
  853. # if (GCC_VERSION >= 3000)
  854.   /* PR 18758: Make sure that the data area is sufficiently aligned for
  855.      pointers on the host.  __alignof__ is a gcc extension, hence the test
  856.      above.  For other compilers we will have to assume that the alignment is
  857.      unimportant, or else extra code can be added here and in
  858.      pe_ILF_make_a_section.
  859.  
  860.      Note - we cannot test 'ptr' directly as it is illegal to perform binary
  861.      arithmetic on pointers, but we know that the strings section is the only
  862.      one that might end on an unaligned boundary.  */
  863.   {
  864.     unsigned int alignment = __alignof__ (char *);
  865.  
  866.     if (SIZEOF_ILF_STRINGS & (alignment - 1))
  867.       ptr += alignment - (SIZEOF_ILF_STRINGS & (alignment - 1));
  868.   }
  869. #endif
  870.  
  871.   vars.data = ptr;
  872.   vars.abfd = abfd;
  873.   vars.sec_index = 0;
  874.   vars.magic = magic;
  875.  
  876.   /* Create the initial .idata$<n> sections:
  877.      [.idata$2:  Import Directory Table -- not needed]
  878.      .idata$4:  Import Lookup Table
  879.      .idata$5:  Import Address Table
  880.  
  881.      Note we do not create a .idata$3 section as this is
  882.      created for us by the linker script.  */
  883.   id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0);
  884.   id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0);
  885.   if (id4 == NULL || id5 == NULL)
  886.     goto error_return;
  887.  
  888.   /* Fill in the contents of these sections.  */
  889.   if (import_name_type == IMPORT_ORDINAL)
  890.     {
  891.       if (ordinal == 0)
  892.         /* XXX - treat as IMPORT_NAME ??? */
  893.         abort ();
  894.  
  895. #ifdef COFF_WITH_pex64
  896.       ((unsigned int *) id4->contents)[0] = ordinal;
  897.       ((unsigned int *) id4->contents)[1] = 0x80000000;
  898.       ((unsigned int *) id5->contents)[0] = ordinal;
  899.       ((unsigned int *) id5->contents)[1] = 0x80000000;
  900. #else
  901.       * (unsigned int *) id4->contents = ordinal | 0x80000000;
  902.       * (unsigned int *) id5->contents = ordinal | 0x80000000;
  903. #endif
  904.     }
  905.   else
  906.     {
  907.       char * symbol;
  908.       unsigned int len;
  909.  
  910.       /* Create .idata$6 - the Hint Name Table.  */
  911.       id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0);
  912.       if (id6 == NULL)
  913.         goto error_return;
  914.  
  915.       /* If necessary, trim the import symbol name.  */
  916.       symbol = symbol_name;
  917.  
  918.       /* As used by MS compiler, '_', '@', and '?' are alternative
  919.          forms of USER_LABEL_PREFIX, with '?' for c++ mangled names,
  920.          '@' used for fastcall (in C),  '_' everywhere else.  Only one
  921.          of these is used for a symbol.  We strip this leading char for
  922.          IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the
  923.          PE COFF 6.0 spec (section 8.3, Import Name Type).  */
  924.  
  925.       if (import_name_type != IMPORT_NAME)
  926.         {
  927.           char c = symbol[0];
  928.  
  929.           /* Check that we don't remove for targets with empty
  930.              USER_LABEL_PREFIX the leading underscore.  */
  931.           if ((c == '_' && abfd->xvec->symbol_leading_char != 0)
  932.               || c == '@' || c == '?')
  933.             symbol++;
  934.         }
  935.  
  936.       len = strlen (symbol);
  937.       if (import_name_type == IMPORT_NAME_UNDECORATE)
  938.         {
  939.           /* Truncate at the first '@'.  */
  940.           char *at = strchr (symbol, '@');
  941.  
  942.           if (at != NULL)
  943.             len = at - symbol;
  944.         }
  945.  
  946.       id6->contents[0] = ordinal & 0xff;
  947.       id6->contents[1] = ordinal >> 8;
  948.  
  949.       memcpy ((char *) id6->contents + 2, symbol, len);
  950.       id6->contents[len + 2] = '\0';
  951.     }
  952.  
  953.   if (import_name_type != IMPORT_ORDINAL)
  954.     {
  955.       pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
  956.       pe_ILF_save_relocs (&vars, id4);
  957.  
  958.       pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
  959.       pe_ILF_save_relocs (&vars, id5);
  960.     }
  961.  
  962.   /* Create extra sections depending upon the type of import we are dealing with.  */
  963.   switch (import_type)
  964.     {
  965.       int i;
  966.  
  967.     case IMPORT_CODE:
  968.       /* Create a .text section.
  969.          First we need to look up its contents in the jump table.  */
  970.       for (i = NUM_ENTRIES (jtab); i--;)
  971.         {
  972.           if (jtab[i].size == 0)
  973.             continue;
  974.           if (jtab[i].magic == magic)
  975.             break;
  976.         }
  977.       /* If we did not find a matching entry something is wrong.  */
  978.       if (i < 0)
  979.         abort ();
  980.  
  981.       /* Create the .text section.  */
  982.       text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE);
  983.       if (text == NULL)
  984.         goto error_return;
  985.  
  986.       /* Copy in the jump code.  */
  987.       memcpy (text->contents, jtab[i].data, jtab[i].size);
  988.  
  989.       /* Create an import symbol.  */
  990.       pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0);
  991.       imp_sym   = vars.sym_ptr_ptr - 1;
  992.       imp_index = vars.sym_index - 1;
  993.  
  994.       /* Create a reloc for the data in the text section.  */
  995. #ifdef MIPS_ARCH_MAGIC_WINCE
  996.       if (magic == MIPS_ARCH_MAGIC_WINCE)
  997.         {
  998.           pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 0, BFD_RELOC_HI16_S,
  999.                                       (struct bfd_symbol **) imp_sym,
  1000.                                       imp_index);
  1001.           pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_LO16, text);
  1002.           pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 4, BFD_RELOC_LO16,
  1003.                                       (struct bfd_symbol **) imp_sym,
  1004.                                       imp_index);
  1005.         }
  1006.       else
  1007. #endif
  1008. #ifdef AMD64MAGIC
  1009.       if (magic == AMD64MAGIC)
  1010.         {
  1011.           pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset,
  1012.                                       BFD_RELOC_32_PCREL, (asymbol **) imp_sym,
  1013.                                       imp_index);
  1014.         }
  1015.       else
  1016. #endif
  1017.         pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset,
  1018.                                     BFD_RELOC_32, (asymbol **) imp_sym,
  1019.                                     imp_index);
  1020.  
  1021.       pe_ILF_save_relocs (& vars, text);
  1022.       break;
  1023.  
  1024.     case IMPORT_DATA:
  1025.       break;
  1026.  
  1027.     default:
  1028.       /* XXX code not yet written.  */
  1029.       abort ();
  1030.     }
  1031.  
  1032.   /* Initialise the bfd.  */
  1033.   memset (& internal_f, 0, sizeof (internal_f));
  1034.  
  1035.   internal_f.f_magic  = magic;
  1036.   internal_f.f_symptr = 0;
  1037.   internal_f.f_nsyms  = 0;
  1038.   internal_f.f_flags  = F_AR32WR | F_LNNO; /* XXX is this correct ?  */
  1039.  
  1040.   if (   ! bfd_set_start_address (abfd, (bfd_vma) 0)
  1041.       || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f))
  1042.     goto error_return;
  1043.  
  1044.   if (bfd_coff_mkobject_hook (abfd, (void *) & internal_f, NULL) == NULL)
  1045.     goto error_return;
  1046.  
  1047.   coff_data (abfd)->pe = 1;
  1048. #ifdef THUMBPEMAGIC
  1049.   if (vars.magic == THUMBPEMAGIC)
  1050.     /* Stop some linker warnings about thumb code not supporting interworking.  */
  1051.     coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET;
  1052. #endif
  1053.  
  1054.   /* Switch from file contents to memory contents.  */
  1055.   bfd_cache_close (abfd);
  1056.  
  1057.   abfd->iostream = (void *) vars.bim;
  1058.   abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */;
  1059.   abfd->iovec = &_bfd_memory_iovec;
  1060.   abfd->where = 0;
  1061.   abfd->origin = 0;
  1062.   obj_sym_filepos (abfd) = 0;
  1063.  
  1064.   /* Now create a symbol describing the imported value.  */
  1065.   switch (import_type)
  1066.     {
  1067.     case IMPORT_CODE:
  1068.       pe_ILF_make_a_symbol (& vars, "", symbol_name, text,
  1069.                             BSF_NOT_AT_END | BSF_FUNCTION);
  1070.  
  1071.       /* Create an import symbol for the DLL, without the
  1072.        .dll suffix.  */
  1073.       ptr = (bfd_byte *) strrchr (source_dll, '.');
  1074.       if (ptr)
  1075.         * ptr = 0;
  1076.       pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0);
  1077.       if (ptr)
  1078.         * ptr = '.';
  1079.       break;
  1080.  
  1081.     case IMPORT_DATA:
  1082.       /* Nothing to do here.  */
  1083.       break;
  1084.  
  1085.     default:
  1086.       /* XXX code not yet written.  */
  1087.       abort ();
  1088.     }
  1089.  
  1090.   /* Point the bfd at the symbol table.  */
  1091.   obj_symbols (abfd) = vars.sym_cache;
  1092.   bfd_get_symcount (abfd) = vars.sym_index;
  1093.  
  1094.   obj_raw_syments (abfd) = vars.native_syms;
  1095.   obj_raw_syment_count (abfd) = vars.sym_index;
  1096.  
  1097.   obj_coff_external_syms (abfd) = (void *) vars.esym_table;
  1098.   obj_coff_keep_syms (abfd) = TRUE;
  1099.  
  1100.   obj_convert (abfd) = vars.sym_table;
  1101.   obj_conv_table_size (abfd) = vars.sym_index;
  1102.  
  1103.   obj_coff_strings (abfd) = vars.string_table;
  1104.   obj_coff_keep_strings (abfd) = TRUE;
  1105.  
  1106.   abfd->flags |= HAS_SYMS;
  1107.  
  1108.   return TRUE;
  1109.  
  1110.  error_return:
  1111.   if (vars.bim->buffer != NULL)
  1112.     free (vars.bim->buffer);
  1113.   free (vars.bim);
  1114.   return FALSE;
  1115. }
  1116.  
  1117. /* We have detected a Image Library Format archive element.
  1118.    Decode the element and return the appropriate target.  */
  1119.  
  1120. static const bfd_target *
  1121. pe_ILF_object_p (bfd * abfd)
  1122. {
  1123.   bfd_byte        buffer[14];
  1124.   bfd_byte *      ptr;
  1125.   char *          symbol_name;
  1126.   char *          source_dll;
  1127.   unsigned int    machine;
  1128.   bfd_size_type   size;
  1129.   unsigned int    ordinal;
  1130.   unsigned int    types;
  1131.   unsigned int    magic;
  1132.  
  1133.   /* Upon entry the first six bytes of the ILF header have
  1134.       already been read.  Now read the rest of the header.  */
  1135.   if (bfd_bread (buffer, (bfd_size_type) 14, abfd) != 14)
  1136.     return NULL;
  1137.  
  1138.   ptr = buffer;
  1139.  
  1140.   machine = H_GET_16 (abfd, ptr);
  1141.   ptr += 2;
  1142.  
  1143.   /* Check that the machine type is recognised.  */
  1144.   magic = 0;
  1145.  
  1146.   switch (machine)
  1147.     {
  1148.     case IMAGE_FILE_MACHINE_UNKNOWN:
  1149.     case IMAGE_FILE_MACHINE_ALPHA:
  1150.     case IMAGE_FILE_MACHINE_ALPHA64:
  1151.     case IMAGE_FILE_MACHINE_IA64:
  1152.       break;
  1153.  
  1154.     case IMAGE_FILE_MACHINE_I386:
  1155. #ifdef I386MAGIC
  1156.       magic = I386MAGIC;
  1157. #endif
  1158.       break;
  1159.  
  1160.     case IMAGE_FILE_MACHINE_AMD64:
  1161. #ifdef AMD64MAGIC
  1162.       magic = AMD64MAGIC;
  1163. #endif
  1164.       break;
  1165.  
  1166.     case IMAGE_FILE_MACHINE_M68K:
  1167. #ifdef MC68AGIC
  1168.       magic = MC68MAGIC;
  1169. #endif
  1170.       break;
  1171.  
  1172.     case IMAGE_FILE_MACHINE_R3000:
  1173.     case IMAGE_FILE_MACHINE_R4000:
  1174.     case IMAGE_FILE_MACHINE_R10000:
  1175.  
  1176.     case IMAGE_FILE_MACHINE_MIPS16:
  1177.     case IMAGE_FILE_MACHINE_MIPSFPU:
  1178.     case IMAGE_FILE_MACHINE_MIPSFPU16:
  1179. #ifdef MIPS_ARCH_MAGIC_WINCE
  1180.       magic = MIPS_ARCH_MAGIC_WINCE;
  1181. #endif
  1182.       break;
  1183.  
  1184.     case IMAGE_FILE_MACHINE_SH3:
  1185.     case IMAGE_FILE_MACHINE_SH4:
  1186. #ifdef SH_ARCH_MAGIC_WINCE
  1187.       magic = SH_ARCH_MAGIC_WINCE;
  1188. #endif
  1189.       break;
  1190.  
  1191.     case IMAGE_FILE_MACHINE_ARM:
  1192. #ifdef ARMPEMAGIC
  1193.       magic = ARMPEMAGIC;
  1194. #endif
  1195.       break;
  1196.  
  1197.     case IMAGE_FILE_MACHINE_THUMB:
  1198. #ifdef THUMBPEMAGIC
  1199.       {
  1200.         extern const bfd_target TARGET_LITTLE_SYM;
  1201.  
  1202.         if (abfd->xvec == & TARGET_LITTLE_SYM)
  1203.           magic = THUMBPEMAGIC;
  1204.       }
  1205. #endif
  1206.       break;
  1207.  
  1208.     case IMAGE_FILE_MACHINE_POWERPC:
  1209.       /* We no longer support PowerPC.  */
  1210.     default:
  1211.       _bfd_error_handler
  1212.         (_("%B: Unrecognised machine type (0x%x)"
  1213.            " in Import Library Format archive"),
  1214.          abfd, machine);
  1215.       bfd_set_error (bfd_error_malformed_archive);
  1216.  
  1217.       return NULL;
  1218.       break;
  1219.     }
  1220.  
  1221.   if (magic == 0)
  1222.     {
  1223.       _bfd_error_handler
  1224.         (_("%B: Recognised but unhandled machine type (0x%x)"
  1225.            " in Import Library Format archive"),
  1226.          abfd, machine);
  1227.       bfd_set_error (bfd_error_wrong_format);
  1228.  
  1229.       return NULL;
  1230.     }
  1231.  
  1232.   /* We do not bother to check the date.
  1233.      date = H_GET_32 (abfd, ptr);  */
  1234.   ptr += 4;
  1235.  
  1236.   size = H_GET_32 (abfd, ptr);
  1237.   ptr += 4;
  1238.  
  1239.   if (size == 0)
  1240.     {
  1241.       _bfd_error_handler
  1242.         (_("%B: size field is zero in Import Library Format header"), abfd);
  1243.       bfd_set_error (bfd_error_malformed_archive);
  1244.  
  1245.       return NULL;
  1246.     }
  1247.  
  1248.   ordinal = H_GET_16 (abfd, ptr);
  1249.   ptr += 2;
  1250.  
  1251.   types = H_GET_16 (abfd, ptr);
  1252.   /* ptr += 2; */
  1253.  
  1254.   /* Now read in the two strings that follow.  */
  1255.   ptr = (bfd_byte *) bfd_alloc (abfd, size);
  1256.   if (ptr == NULL)
  1257.     return NULL;
  1258.  
  1259.   if (bfd_bread (ptr, size, abfd) != size)
  1260.     {
  1261.       bfd_release (abfd, ptr);
  1262.       return NULL;
  1263.     }
  1264.  
  1265.   symbol_name = (char *) ptr;
  1266.   source_dll  = symbol_name + strlen (symbol_name) + 1;
  1267.  
  1268.   /* Verify that the strings are null terminated.  */
  1269.   if (ptr[size - 1] != 0
  1270.       || (bfd_size_type) ((bfd_byte *) source_dll - ptr) >= size)
  1271.     {
  1272.       _bfd_error_handler
  1273.         (_("%B: string not null terminated in ILF object file."), abfd);
  1274.       bfd_set_error (bfd_error_malformed_archive);
  1275.       bfd_release (abfd, ptr);
  1276.       return NULL;
  1277.     }
  1278.  
  1279.   /* Now construct the bfd.  */
  1280.   if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name,
  1281.                             source_dll, ordinal, types))
  1282.     {
  1283.       bfd_release (abfd, ptr);
  1284.       return NULL;
  1285.     }
  1286.  
  1287.   return abfd->xvec;
  1288. }
  1289.  
  1290. static void
  1291. pe_bfd_read_buildid(bfd *abfd)
  1292. {
  1293.   pe_data_type *pe = pe_data (abfd);
  1294.   struct internal_extra_pe_aouthdr *extra = &pe->pe_opthdr;
  1295.   asection *section;
  1296.   bfd_byte *data = 0;
  1297.   bfd_size_type dataoff;
  1298.   unsigned int i;
  1299.  
  1300.   bfd_vma addr = extra->DataDirectory[PE_DEBUG_DATA].VirtualAddress;
  1301.   bfd_size_type size = extra->DataDirectory[PE_DEBUG_DATA].Size;
  1302.  
  1303.   if (size == 0)
  1304.     return;
  1305.  
  1306.   addr += extra->ImageBase;
  1307.  
  1308.   /* Search for the section containing the DebugDirectory */
  1309.   for (section = abfd->sections; section != NULL; section = section->next)
  1310.     {
  1311.       if ((addr >= section->vma) && (addr < (section->vma + section->size)))
  1312.         break;
  1313.     }
  1314.  
  1315.   if (section == NULL)
  1316.     {
  1317.       return;
  1318.     }
  1319.   else if (!(section->flags & SEC_HAS_CONTENTS))
  1320.     {
  1321.       return;
  1322.     }
  1323.  
  1324.   dataoff = addr - section->vma;
  1325.  
  1326.   /* Read the whole section. */
  1327.   if (!bfd_malloc_and_get_section (abfd, section, &data))
  1328.     {
  1329.       if (data != NULL)
  1330.         free (data);
  1331.       return;
  1332.     }
  1333.  
  1334.   /* Search for a CodeView entry in the DebugDirectory */
  1335.   for (i = 0; i < size / sizeof (struct external_IMAGE_DEBUG_DIRECTORY); i++)
  1336.     {
  1337.       struct external_IMAGE_DEBUG_DIRECTORY *ext
  1338.         = &((struct external_IMAGE_DEBUG_DIRECTORY *)(data + dataoff))[i];
  1339.       struct internal_IMAGE_DEBUG_DIRECTORY idd;
  1340.  
  1341.       _bfd_XXi_swap_debugdir_in (abfd, ext, &idd);
  1342.  
  1343.       if (idd.Type == PE_IMAGE_DEBUG_TYPE_CODEVIEW)
  1344.         {
  1345.           char buffer[256 + 1];
  1346.           CODEVIEW_INFO *cvinfo = (CODEVIEW_INFO *) buffer;
  1347.  
  1348.           /*
  1349.             The debug entry doesn't have to have to be in a section, in which
  1350.             case AddressOfRawData is 0, so always use PointerToRawData.
  1351.           */
  1352.           if (_bfd_XXi_slurp_codeview_record (abfd,
  1353.                                               (file_ptr) idd.PointerToRawData,
  1354.                                               idd.SizeOfData, cvinfo))
  1355.             {
  1356.               struct bfd_build_id* build_id = bfd_alloc(abfd,
  1357.                          sizeof(struct bfd_build_id) + cvinfo->SignatureLength);
  1358.               if (build_id)
  1359.                 {
  1360.                   build_id->size = cvinfo->SignatureLength;
  1361.                   memcpy(build_id->data,  cvinfo->Signature,
  1362.                          cvinfo->SignatureLength);
  1363.                   abfd->build_id = build_id;
  1364.                 }
  1365.             }
  1366.           break;
  1367.         }
  1368.     }
  1369. }
  1370.  
  1371. static const bfd_target *
  1372. pe_bfd_object_p (bfd * abfd)
  1373. {
  1374.   bfd_byte buffer[6];
  1375.   struct external_PEI_DOS_hdr dos_hdr;
  1376.   struct external_PEI_IMAGE_hdr image_hdr;
  1377.   struct internal_filehdr internal_f;
  1378.   struct internal_aouthdr internal_a;
  1379.   file_ptr opt_hdr_size;
  1380.   file_ptr offset;
  1381.   const bfd_target *result;
  1382.  
  1383.   /* Detect if this a Microsoft Import Library Format element.  */
  1384.   /* First read the beginning of the header.  */
  1385.   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
  1386.       || bfd_bread (buffer, (bfd_size_type) 6, abfd) != 6)
  1387.     {
  1388.       if (bfd_get_error () != bfd_error_system_call)
  1389.         bfd_set_error (bfd_error_wrong_format);
  1390.       return NULL;
  1391.     }
  1392.  
  1393.   /* Then check the magic and the version (only 0 is supported).  */
  1394.   if (H_GET_32 (abfd, buffer) == 0xffff0000
  1395.       && H_GET_16 (abfd, buffer + 4) == 0)
  1396.     return pe_ILF_object_p (abfd);
  1397.  
  1398.   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
  1399.       || bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd)
  1400.          != sizeof (dos_hdr))
  1401.     {
  1402.       if (bfd_get_error () != bfd_error_system_call)
  1403.         bfd_set_error (bfd_error_wrong_format);
  1404.       return NULL;
  1405.     }
  1406.  
  1407.   /* There are really two magic numbers involved; the magic number
  1408.      that says this is a NT executable (PEI) and the magic number that
  1409.      determines the architecture.  The former is DOSMAGIC, stored in
  1410.      the e_magic field.  The latter is stored in the f_magic field.
  1411.      If the NT magic number isn't valid, the architecture magic number
  1412.      could be mimicked by some other field (specifically, the number
  1413.      of relocs in section 3).  Since this routine can only be called
  1414.      correctly for a PEI file, check the e_magic number here, and, if
  1415.      it doesn't match, clobber the f_magic number so that we don't get
  1416.      a false match.  */
  1417.   if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC)
  1418.     {
  1419.       bfd_set_error (bfd_error_wrong_format);
  1420.       return NULL;
  1421.     }
  1422.  
  1423.   offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
  1424.   if (bfd_seek (abfd, offset, SEEK_SET) != 0
  1425.       || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd)
  1426.           != sizeof (image_hdr)))
  1427.     {
  1428.       if (bfd_get_error () != bfd_error_system_call)
  1429.         bfd_set_error (bfd_error_wrong_format);
  1430.       return NULL;
  1431.     }
  1432.  
  1433.   if (H_GET_32 (abfd, image_hdr.nt_signature) != 0x4550)
  1434.     {
  1435.       bfd_set_error (bfd_error_wrong_format);
  1436.       return NULL;
  1437.     }
  1438.  
  1439.   /* Swap file header, so that we get the location for calling
  1440.      real_object_p.  */
  1441.   bfd_coff_swap_filehdr_in (abfd, &image_hdr, &internal_f);
  1442.  
  1443.   if (! bfd_coff_bad_format_hook (abfd, &internal_f)
  1444.       || internal_f.f_opthdr > bfd_coff_aoutsz (abfd))
  1445.     {
  1446.       bfd_set_error (bfd_error_wrong_format);
  1447.       return NULL;
  1448.     }
  1449.  
  1450.   /* Read the optional header, which has variable size.  */
  1451.   opt_hdr_size = internal_f.f_opthdr;
  1452.  
  1453.   if (opt_hdr_size != 0)
  1454.     {
  1455.       bfd_size_type amt = opt_hdr_size;
  1456.       void * opthdr;
  1457.  
  1458.       /* PR 17521 file: 230-131433-0.004.  */
  1459.       if (amt < sizeof (PEAOUTHDR))
  1460.         amt = sizeof (PEAOUTHDR);
  1461.  
  1462.       opthdr = bfd_zalloc (abfd, amt);
  1463.       if (opthdr == NULL)
  1464.         return NULL;
  1465.       if (bfd_bread (opthdr, opt_hdr_size, abfd)
  1466.           != (bfd_size_type) opt_hdr_size)
  1467.         return NULL;
  1468.  
  1469.       bfd_set_error (bfd_error_no_error);
  1470.       bfd_coff_swap_aouthdr_in (abfd, opthdr, & internal_a);
  1471.       if (bfd_get_error () != bfd_error_no_error)
  1472.         return NULL;
  1473.     }
  1474.  
  1475.  
  1476.   result = coff_real_object_p (abfd, internal_f.f_nscns, &internal_f,
  1477.                             (opt_hdr_size != 0
  1478.                              ? &internal_a
  1479.                              : (struct internal_aouthdr *) NULL));
  1480.  
  1481.  
  1482.   if (result)
  1483.     {
  1484.       /* Now the whole header has been processed, see if there is a build-id */
  1485.       pe_bfd_read_buildid(abfd);
  1486.     }
  1487.  
  1488.   return result;
  1489. }
  1490.  
  1491. #define coff_object_p pe_bfd_object_p
  1492. #endif /* COFF_IMAGE_WITH_PE */
  1493.