1932 lines
49 KiB
C
1932 lines
49 KiB
C
/* Routines to help build PEI-format DLLs (Win32 etc)
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Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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Written by DJ Delorie <dj@cygnus.com>
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "libiberty.h"
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#include <time.h>
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#include <ctype.h>
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#include "ld.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldwrite.h"
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#include "ldmisc.h"
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#include "ldgram.h"
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#include "ldmain.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "coff/internal.h"
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#include "../bfd/libcoff.h"
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#include "deffile.h"
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#include "pe-dll.h"
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/************************************************************************
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This file turns a regular Windows PE image into a DLL. Because of
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the complexity of this operation, it has been broken down into a
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number of separate modules which are all called by the main function
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at the end of this file. This function is not re-entrant and is
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normally only called once, so static variables are used to reduce
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the number of parameters and return values required.
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See also: ld/emultempl/pe.em
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************************************************************************/
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/* for emultempl/pe.em */
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def_file *pe_def_file = 0;
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int pe_dll_export_everything = 0;
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int pe_dll_do_default_excludes = 1;
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int pe_dll_kill_ats = 0;
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int pe_dll_stdcall_aliases = 0;
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int pe_dll_warn_dup_exports = 0;
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int pe_dll_compat_implib = 0;
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/************************************************************************
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static variables and types
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************************************************************************/
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static bfd_vma image_base;
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static bfd *filler_bfd;
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static struct sec *edata_s, *reloc_s;
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static unsigned char *edata_d, *reloc_d;
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static size_t edata_sz, reloc_sz;
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typedef struct {
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char *target_name;
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char *object_target;
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unsigned int imagebase_reloc;
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int pe_arch;
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int bfd_arch;
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int underscored;
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} pe_details_type;
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#define PE_ARCH_i386 1
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#define PE_ARCH_sh 2
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#define PE_ARCH_mips 3
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#define PE_ARCH_arm 4
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static pe_details_type pe_detail_list[] = {
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{
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"pei-i386",
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"pe-i386",
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7 /* R_IMAGEBASE */,
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PE_ARCH_i386,
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bfd_arch_i386,
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1
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},
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{
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"pei-shl",
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"pe-shl",
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16 /* R_SH_IMAGEBASE */,
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PE_ARCH_sh,
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bfd_arch_sh,
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1
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},
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{
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"pei-mips",
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"pe-mips",
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34 /* MIPS_R_RVA */,
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PE_ARCH_mips,
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bfd_arch_mips,
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0
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},
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{
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"pei-arm-little",
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"pe-arm-little",
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11 /* ARM_RVA32 */,
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PE_ARCH_arm,
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bfd_arch_arm,
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0
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},
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{ NULL, NULL, 0, 0, 0, 0 }
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};
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static pe_details_type *pe_details;
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#define U(str) (pe_details->underscored ? "_" str : str)
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void
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pe_dll_id_target (target)
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const char *target;
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{
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int i;
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for (i=0; pe_detail_list[i].target_name; i++)
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if (strcmp (pe_detail_list[i].target_name, target) == 0)
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{
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pe_details = pe_detail_list+i;
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return;
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}
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einfo (_("%XUnsupported PEI architecture: %s\n"), target);
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exit (1);
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}
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/************************************************************************
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Helper functions for qsort. Relocs must be sorted so that we can write
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them out by pages.
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************************************************************************/
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typedef struct {
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bfd_vma vma;
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char type;
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short extra;
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} reloc_data_type;
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static int
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reloc_sort (va, vb)
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const void *va, *vb;
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{
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bfd_vma a = ((reloc_data_type *) va)->vma;
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bfd_vma b = ((reloc_data_type *) vb)->vma;
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return (a > b) ? 1 : ((a < b) ? -1 : 0);
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}
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static int
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pe_export_sort (va, vb)
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const void *va, *vb;
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{
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def_file_export *a = (def_file_export *) va;
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def_file_export *b = (def_file_export *) vb;
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return strcmp (a->name, b->name);
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}
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/************************************************************************
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Read and process the .DEF file
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************************************************************************/
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/* These correspond to the entries in pe_def_file->exports[]. I use
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exported_symbol_sections[i] to tag whether or not the symbol was
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defined, since we can't export symbols we don't have. */
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static bfd_vma *exported_symbol_offsets;
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static struct sec **exported_symbol_sections;
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static int export_table_size;
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static int count_exported;
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static int count_exported_byname;
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static int count_with_ordinals;
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static const char *dll_name;
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static int min_ordinal, max_ordinal;
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static int *exported_symbols;
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typedef struct exclude_list_struct
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{
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char *string;
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struct exclude_list_struct *next;
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}
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exclude_list_struct;
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static struct exclude_list_struct *excludes = 0;
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void
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pe_dll_add_excludes (new_excludes)
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const char *new_excludes;
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{
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char *local_copy;
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char *exclude_string;
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local_copy = xstrdup (new_excludes);
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exclude_string = strtok (local_copy, ",:");
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for (; exclude_string; exclude_string = strtok (NULL, ",:"))
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{
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struct exclude_list_struct *new_exclude;
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new_exclude = ((struct exclude_list_struct *)
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xmalloc (sizeof (struct exclude_list_struct)));
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new_exclude->string = (char *) xmalloc (strlen (exclude_string) + 1);
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strcpy (new_exclude->string, exclude_string);
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new_exclude->next = excludes;
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excludes = new_exclude;
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}
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free (local_copy);
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}
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static int
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auto_export (d, n)
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def_file *d;
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const char *n;
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{
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int i;
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struct exclude_list_struct *ex;
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for (i = 0; i < d->num_exports; i++)
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if (strcmp (d->exports[i].name, n) == 0)
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return 0;
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if (pe_dll_do_default_excludes)
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{
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if (strcmp (n, "DllMain@12") == 0)
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return 0;
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if (strcmp (n, "DllEntryPoint@0") == 0)
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return 0;
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if (strcmp (n, "impure_ptr") == 0)
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return 0;
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}
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for (ex = excludes; ex; ex = ex->next)
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if (strcmp (n, ex->string) == 0)
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return 0;
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return 1;
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}
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static void
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process_def_file (abfd, info)
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bfd *abfd ATTRIBUTE_UNUSED;
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struct bfd_link_info *info;
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{
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int i, j;
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struct bfd_link_hash_entry *blhe;
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bfd *b;
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struct sec *s;
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def_file_export *e=0;
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if (!pe_def_file)
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pe_def_file = def_file_empty ();
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/* First, run around to all the objects looking for the .drectve
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sections, and push those into the def file too */
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for (b = info->input_bfds; b; b = b->link_next)
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{
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s = bfd_get_section_by_name (b, ".drectve");
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if (s)
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{
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int size = bfd_get_section_size_before_reloc (s);
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char *buf = xmalloc (size);
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bfd_get_section_contents (b, s, buf, 0, size);
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def_file_add_directive (pe_def_file, buf, size);
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free (buf);
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}
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}
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/* Now, maybe export everything else the default way */
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if (pe_dll_export_everything || pe_def_file->num_exports == 0)
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{
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for (b = info->input_bfds; b; b = b->link_next)
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{
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asymbol **symbols;
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int nsyms, symsize;
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symsize = bfd_get_symtab_upper_bound (b);
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symbols = (asymbol **) xmalloc (symsize);
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nsyms = bfd_canonicalize_symtab (b, symbols);
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for (j = 0; j < nsyms; j++)
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{
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if (symbols[j]->flags & BSF_GLOBAL)
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{
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const char *sn = symbols[j]->name;
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if (*sn == '_')
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sn++;
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if (auto_export (pe_def_file, sn))
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def_file_add_export (pe_def_file, sn, 0, -1);
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}
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}
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}
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}
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#undef NE
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#define NE pe_def_file->num_exports
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/* Canonicalize the export list */
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if (pe_dll_kill_ats)
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{
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for (i = 0; i < NE; i++)
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{
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if (strchr (pe_def_file->exports[i].name, '@'))
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{
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/* This will preserve internal_name, which may have been pointing
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to the same memory as name, or might not have */
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char *tmp = xstrdup (pe_def_file->exports[i].name);
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*(strchr (tmp, '@')) = 0;
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pe_def_file->exports[i].name = tmp;
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}
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}
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}
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if (pe_dll_stdcall_aliases)
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{
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for (i = 0; i < NE; i++)
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{
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if (strchr (pe_def_file->exports[i].name, '@'))
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{
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char *tmp = xstrdup (pe_def_file->exports[i].name);
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*(strchr (tmp, '@')) = 0;
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if (auto_export (pe_def_file, tmp))
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def_file_add_export (pe_def_file, tmp,
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pe_def_file->exports[i].internal_name, -1);
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else
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free (tmp);
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}
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}
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}
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e = pe_def_file->exports; /* convenience, but watch out for it changing */
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exported_symbol_offsets = (bfd_vma *) xmalloc (NE * sizeof (bfd_vma));
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exported_symbol_sections = (struct sec **) xmalloc (NE * sizeof (struct sec *));
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memset (exported_symbol_sections, 0, NE * sizeof (struct sec *));
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max_ordinal = 0;
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min_ordinal = 65536;
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count_exported = 0;
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count_exported_byname = 0;
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count_with_ordinals = 0;
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qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]), pe_export_sort);
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for (i = 0, j = 0; i < NE; i++)
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{
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if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
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{
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/* This is a duplicate. */
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if (e[j - 1].ordinal != -1
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&& e[i].ordinal != -1
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&& e[j - 1].ordinal != e[i].ordinal)
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{
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if (pe_dll_warn_dup_exports)
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/* xgettext:c-format */
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einfo (_("%XError, duplicate EXPORT with oridinals: %s (%d vs %d)\n"),
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e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
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}
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else
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{
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if (pe_dll_warn_dup_exports)
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/* xgettext:c-format */
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einfo (_("Warning, duplicate EXPORT: %s\n"),
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e[j - 1].name);
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}
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if (e[i].ordinal)
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e[j - 1].ordinal = e[i].ordinal;
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e[j - 1].flag_private |= e[i].flag_private;
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e[j - 1].flag_constant |= e[i].flag_constant;
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e[j - 1].flag_noname |= e[i].flag_noname;
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e[j - 1].flag_data |= e[i].flag_data;
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}
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else
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{
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if (i != j)
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e[j] = e[i];
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j++;
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}
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}
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pe_def_file->num_exports = j; /* == NE */
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for (i = 0; i < NE; i++)
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{
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char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
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if (pe_details->underscored)
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{
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*name = '_';
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strcpy (name + 1, pe_def_file->exports[i].internal_name);
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}
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else
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strcpy (name, pe_def_file->exports[i].internal_name);
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blhe = bfd_link_hash_lookup (info->hash,
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name,
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false, false, true);
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if (blhe
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&& (blhe->type == bfd_link_hash_defined
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|| (blhe->type == bfd_link_hash_common)))
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{
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count_exported++;
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if (!pe_def_file->exports[i].flag_noname)
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count_exported_byname++;
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/* Only fill in the sections. The actual offsets are computed
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in fill_exported_offsets() after common symbols are laid
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out. */
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if (blhe->type == bfd_link_hash_defined)
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exported_symbol_sections[i] = blhe->u.def.section;
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else
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exported_symbol_sections[i] = blhe->u.c.p->section;
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if (pe_def_file->exports[i].ordinal != -1)
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{
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if (max_ordinal < pe_def_file->exports[i].ordinal)
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max_ordinal = pe_def_file->exports[i].ordinal;
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if (min_ordinal > pe_def_file->exports[i].ordinal)
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min_ordinal = pe_def_file->exports[i].ordinal;
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count_with_ordinals++;
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}
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}
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else if (blhe && blhe->type == bfd_link_hash_undefined)
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{
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/* xgettext:c-format */
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einfo (_("%XCannot export %s: symbol not defined\n"),
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pe_def_file->exports[i].internal_name);
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}
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else if (blhe)
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{
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/* xgettext:c-format */
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einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"),
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pe_def_file->exports[i].internal_name,
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blhe->type, bfd_link_hash_defined);
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}
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else
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{
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/* xgettext:c-format */
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einfo (_("%XCannot export %s: symbol not found\n"),
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pe_def_file->exports[i].internal_name);
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}
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free (name);
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}
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}
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/************************************************************************
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Build the bfd that will contain .edata and .reloc sections
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************************************************************************/
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static void
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build_filler_bfd (include_edata)
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int include_edata;
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{
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lang_input_statement_type *filler_file;
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filler_file = lang_add_input_file ("dll stuff",
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lang_input_file_is_fake_enum,
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NULL);
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filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff", output_bfd);
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if (filler_bfd == NULL
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|| !bfd_set_arch_mach (filler_bfd,
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bfd_get_arch (output_bfd),
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bfd_get_mach (output_bfd)))
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{
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einfo ("%X%P: can not create BFD %E\n");
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return;
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}
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if (include_edata)
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{
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edata_s = bfd_make_section_old_way (filler_bfd, ".edata");
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if (edata_s == NULL
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|| !bfd_set_section_flags (filler_bfd, edata_s,
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(SEC_HAS_CONTENTS
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| SEC_ALLOC
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| SEC_LOAD
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| SEC_KEEP
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| SEC_IN_MEMORY)))
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{
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einfo ("%X%P: can not create .edata section: %E\n");
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return;
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}
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bfd_set_section_size (filler_bfd, edata_s, edata_sz);
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}
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reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc");
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if (reloc_s == NULL
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|| !bfd_set_section_flags (filler_bfd, reloc_s,
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(SEC_HAS_CONTENTS
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| SEC_ALLOC
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| SEC_LOAD
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| SEC_KEEP
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| SEC_IN_MEMORY)))
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{
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einfo ("%X%P: can not create .reloc section: %E\n");
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return;
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}
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bfd_set_section_size (filler_bfd, reloc_s, 0);
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ldlang_add_file (filler_file);
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}
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/************************************************************************
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Gather all the exported symbols and build the .edata section
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************************************************************************/
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static void
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generate_edata (abfd, info)
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|
bfd *abfd;
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
{
|
|
int i, next_ordinal;
|
|
int name_table_size = 0;
|
|
const char *dlnp;
|
|
|
|
/* First, we need to know how many exported symbols there are,
|
|
and what the range of ordinals is. */
|
|
|
|
if (pe_def_file->name)
|
|
{
|
|
dll_name = pe_def_file->name;
|
|
}
|
|
else
|
|
{
|
|
dll_name = abfd->filename;
|
|
for (dlnp = dll_name; *dlnp; dlnp++)
|
|
{
|
|
if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':')
|
|
dll_name = dlnp + 1;
|
|
}
|
|
}
|
|
|
|
if (count_with_ordinals && max_ordinal > count_exported)
|
|
{
|
|
if (min_ordinal > max_ordinal - count_exported + 1)
|
|
min_ordinal = max_ordinal - count_exported + 1;
|
|
}
|
|
else
|
|
{
|
|
min_ordinal = 1;
|
|
max_ordinal = count_exported;
|
|
}
|
|
export_table_size = max_ordinal - min_ordinal + 1;
|
|
|
|
exported_symbols = (int *) xmalloc (export_table_size * sizeof (int));
|
|
for (i = 0; i < export_table_size; i++)
|
|
exported_symbols[i] = -1;
|
|
|
|
/* Now we need to assign ordinals to those that don't have them */
|
|
for (i = 0; i < NE; i++)
|
|
{
|
|
if (exported_symbol_sections[i])
|
|
{
|
|
if (pe_def_file->exports[i].ordinal != -1)
|
|
{
|
|
int ei = pe_def_file->exports[i].ordinal - min_ordinal;
|
|
int pi = exported_symbols[ei];
|
|
if (pi != -1)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XError, oridinal used twice: %d (%s vs %s)\n"),
|
|
pe_def_file->exports[i].ordinal,
|
|
pe_def_file->exports[i].name,
|
|
pe_def_file->exports[pi].name);
|
|
}
|
|
exported_symbols[ei] = i;
|
|
}
|
|
name_table_size += strlen (pe_def_file->exports[i].name) + 1;
|
|
}
|
|
}
|
|
|
|
next_ordinal = min_ordinal;
|
|
for (i = 0; i < NE; i++)
|
|
if (exported_symbol_sections[i])
|
|
if (pe_def_file->exports[i].ordinal == -1)
|
|
{
|
|
while (exported_symbols[next_ordinal - min_ordinal] != -1)
|
|
next_ordinal++;
|
|
exported_symbols[next_ordinal - min_ordinal] = i;
|
|
pe_def_file->exports[i].ordinal = next_ordinal;
|
|
}
|
|
|
|
/* OK, now we can allocate some memory */
|
|
|
|
edata_sz = (40 /* directory */
|
|
+ 4 * export_table_size /* addresses */
|
|
+ 4 * count_exported_byname /* name ptrs */
|
|
+ 2 * count_exported_byname /* ordinals */
|
|
+ name_table_size + strlen (dll_name) + 1);
|
|
}
|
|
|
|
/* Fill the exported symbol offsets. The preliminary work has already
|
|
been done in process_def_file(). */
|
|
|
|
static void
|
|
fill_exported_offsets (abfd, info)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
struct bfd_link_info *info;
|
|
{
|
|
int i;
|
|
struct bfd_link_hash_entry *blhe;
|
|
|
|
for (i = 0; i < pe_def_file->num_exports; i++)
|
|
{
|
|
char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
|
|
if (pe_details->underscored)
|
|
{
|
|
*name = '_';
|
|
strcpy (name + 1, pe_def_file->exports[i].internal_name);
|
|
}
|
|
else
|
|
strcpy (name, pe_def_file->exports[i].internal_name);
|
|
|
|
blhe = bfd_link_hash_lookup (info->hash,
|
|
name,
|
|
false, false, true);
|
|
|
|
if (blhe && (blhe->type == bfd_link_hash_defined))
|
|
{
|
|
exported_symbol_offsets[i] = blhe->u.def.value;
|
|
}
|
|
free (name);
|
|
}
|
|
}
|
|
|
|
static void
|
|
fill_edata (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
{
|
|
int i, hint;
|
|
unsigned char *edirectory;
|
|
unsigned long *eaddresses;
|
|
unsigned long *enameptrs;
|
|
unsigned short *eordinals;
|
|
unsigned char *enamestr;
|
|
time_t now;
|
|
|
|
time (&now);
|
|
|
|
edata_d = (unsigned char *) xmalloc (edata_sz);
|
|
|
|
/* Note use of array pointer math here */
|
|
edirectory = edata_d;
|
|
eaddresses = (unsigned long *) (edata_d + 40);
|
|
enameptrs = eaddresses + export_table_size;
|
|
eordinals = (unsigned short *) (enameptrs + count_exported_byname);
|
|
enamestr = (char *) (eordinals + count_exported_byname);
|
|
|
|
#define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) + edata_s->output_section->vma - image_base)
|
|
|
|
memset (edata_d, 0, 40);
|
|
bfd_put_32 (abfd, now, edata_d + 4);
|
|
if (pe_def_file->version_major != -1)
|
|
{
|
|
bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8);
|
|
bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10);
|
|
}
|
|
bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12);
|
|
strcpy (enamestr, dll_name);
|
|
enamestr += strlen (enamestr) + 1;
|
|
bfd_put_32 (abfd, min_ordinal, edata_d + 16);
|
|
bfd_put_32 (abfd, export_table_size, edata_d + 20);
|
|
bfd_put_32 (abfd, count_exported_byname, edata_d + 24);
|
|
bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28);
|
|
bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32);
|
|
bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36);
|
|
|
|
fill_exported_offsets (abfd, info);
|
|
|
|
/* Ok, now for the filling in part */
|
|
hint = 0;
|
|
for (i = 0; i < export_table_size; i++)
|
|
{
|
|
int s = exported_symbols[i];
|
|
if (s != -1)
|
|
{
|
|
struct sec *ssec = exported_symbol_sections[s];
|
|
unsigned long srva = (exported_symbol_offsets[s]
|
|
+ ssec->output_section->vma
|
|
+ ssec->output_offset);
|
|
|
|
bfd_put_32 (abfd, srva - image_base, (void *) (eaddresses + i));
|
|
if (!pe_def_file->exports[s].flag_noname)
|
|
{
|
|
char *ename = pe_def_file->exports[s].name;
|
|
bfd_put_32 (abfd, ERVA (enamestr), (void *) enameptrs);
|
|
strcpy (enamestr, ename);
|
|
enamestr += strlen (enamestr) + 1;
|
|
bfd_put_16 (abfd, i, (void *) eordinals);
|
|
enameptrs++;
|
|
pe_def_file->exports[s].hint = hint++;
|
|
}
|
|
eordinals++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
|
|
Gather all the relocations and build the .reloc section
|
|
|
|
************************************************************************/
|
|
|
|
static void
|
|
generate_reloc (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info;
|
|
{
|
|
|
|
/* for .reloc stuff */
|
|
reloc_data_type *reloc_data;
|
|
int total_relocs = 0;
|
|
int i;
|
|
unsigned long sec_page = (unsigned long) (-1);
|
|
unsigned long page_ptr, page_count;
|
|
int bi;
|
|
bfd *b;
|
|
struct sec *s;
|
|
|
|
total_relocs = 0;
|
|
for (b = info->input_bfds; b; b = b->link_next)
|
|
for (s = b->sections; s; s = s->next)
|
|
total_relocs += s->reloc_count;
|
|
|
|
reloc_data = (reloc_data_type *) xmalloc (total_relocs * sizeof (reloc_data_type));
|
|
|
|
total_relocs = 0;
|
|
bi = 0;
|
|
for (bi = 0, b = info->input_bfds; b; bi++, b = b->link_next)
|
|
{
|
|
arelent **relocs;
|
|
int relsize, nrelocs, i;
|
|
|
|
for (s = b->sections; s; s = s->next)
|
|
{
|
|
unsigned long sec_vma = s->output_section->vma + s->output_offset;
|
|
asymbol **symbols;
|
|
int nsyms, symsize;
|
|
|
|
/* if it's not loaded, we don't need to relocate it this way */
|
|
if (!(s->output_section->flags & SEC_LOAD))
|
|
continue;
|
|
|
|
/* I don't know why there would be a reloc for these, but I've
|
|
seen it happen - DJ */
|
|
if (s->output_section == &bfd_abs_section)
|
|
continue;
|
|
|
|
if (s->output_section->vma == 0)
|
|
{
|
|
/* Huh? Shouldn't happen, but punt if it does */
|
|
einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n",
|
|
s->output_section->name, s->output_section->index,
|
|
s->output_section->flags);
|
|
continue;
|
|
}
|
|
|
|
symsize = bfd_get_symtab_upper_bound (b);
|
|
symbols = (asymbol **) xmalloc (symsize);
|
|
nsyms = bfd_canonicalize_symtab (b, symbols);
|
|
|
|
relsize = bfd_get_reloc_upper_bound (b, s);
|
|
relocs = (arelent **) xmalloc ((size_t) relsize);
|
|
nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
|
|
|
|
for (i = 0; i < nrelocs; i++)
|
|
{
|
|
if (!relocs[i]->howto->pc_relative
|
|
&& relocs[i]->howto->type != pe_details->imagebase_reloc)
|
|
{
|
|
bfd_vma sym_vma;
|
|
struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr;
|
|
sym_vma = (relocs[i]->addend
|
|
+ sym->value
|
|
+ sym->section->vma
|
|
+ sym->section->output_offset
|
|
+ sym->section->output_section->vma);
|
|
reloc_data[total_relocs].vma = sec_vma + relocs[i]->address;
|
|
|
|
#define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift)
|
|
|
|
switch BITS_AND_SHIFT (relocs[i]->howto->bitsize,
|
|
relocs[i]->howto->rightshift)
|
|
{
|
|
case BITS_AND_SHIFT (32, 0):
|
|
reloc_data[total_relocs].type = 3;
|
|
total_relocs++;
|
|
break;
|
|
case BITS_AND_SHIFT (16, 0):
|
|
reloc_data[total_relocs].type = 2;
|
|
total_relocs++;
|
|
break;
|
|
case BITS_AND_SHIFT (16, 16):
|
|
reloc_data[total_relocs].type = 4;
|
|
/* FIXME: we can't know the symbol's right value yet,
|
|
but we probably can safely assume that CE will relocate
|
|
us in 64k blocks, so leaving it zero is safe. */
|
|
reloc_data[total_relocs].extra = 0;
|
|
total_relocs++;
|
|
break;
|
|
case BITS_AND_SHIFT (26, 2):
|
|
reloc_data[total_relocs].type = 5;
|
|
total_relocs++;
|
|
break;
|
|
default:
|
|
/* xgettext:c-format */
|
|
einfo (_("%XError: %d-bit reloc in dll\n"),
|
|
relocs[i]->howto->bitsize);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
free (relocs);
|
|
/* Warning: the allocated symbols are remembered in BFD and reused
|
|
later, so don't free them! */
|
|
/* free (symbols); */
|
|
}
|
|
}
|
|
|
|
/* At this point, we have total_relocs relocation addresses in
|
|
reloc_addresses, which are all suitable for the .reloc section.
|
|
We must now create the new sections. */
|
|
|
|
qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort);
|
|
|
|
for (i = 0; i < total_relocs; i++)
|
|
{
|
|
unsigned long this_page = (reloc_data[i].vma >> 12);
|
|
|
|
if (this_page != sec_page)
|
|
{
|
|
reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align */
|
|
reloc_sz += 8;
|
|
sec_page = this_page;
|
|
}
|
|
|
|
reloc_sz += 2;
|
|
|
|
if (reloc_data[i].type == 4)
|
|
reloc_sz += 2;
|
|
}
|
|
reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align */
|
|
|
|
reloc_d = (unsigned char *) xmalloc (reloc_sz);
|
|
|
|
sec_page = (unsigned long) (-1);
|
|
reloc_sz = 0;
|
|
page_ptr = (unsigned long) (-1);
|
|
page_count = 0;
|
|
for (i = 0; i < total_relocs; i++)
|
|
{
|
|
unsigned long rva = reloc_data[i].vma - image_base;
|
|
unsigned long this_page = (rva & ~0xfff);
|
|
if (this_page != sec_page)
|
|
{
|
|
while (reloc_sz & 3)
|
|
reloc_d[reloc_sz++] = 0;
|
|
if (page_ptr != (unsigned long) (-1))
|
|
bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
|
|
bfd_put_32 (abfd, this_page, reloc_d + reloc_sz);
|
|
page_ptr = reloc_sz;
|
|
reloc_sz += 8;
|
|
sec_page = this_page;
|
|
page_count = 0;
|
|
}
|
|
bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type<<12),
|
|
reloc_d + reloc_sz);
|
|
reloc_sz += 2;
|
|
if (reloc_data[i].type == 4)
|
|
{
|
|
bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz);
|
|
reloc_sz += 2;
|
|
}
|
|
page_count++;
|
|
}
|
|
while (reloc_sz & 3)
|
|
reloc_d[reloc_sz++] = 0;
|
|
if (page_ptr != (unsigned long) (-1))
|
|
bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
|
|
while (reloc_sz < reloc_s->_raw_size)
|
|
reloc_d[reloc_sz++] = 0;
|
|
}
|
|
|
|
/************************************************************************
|
|
|
|
Given the exiting def_file structure, print out a .DEF file that
|
|
corresponds to it.
|
|
|
|
************************************************************************/
|
|
|
|
static void
|
|
quoteput (s, f, needs_quotes)
|
|
char *s;
|
|
FILE * f;
|
|
int needs_quotes;
|
|
{
|
|
char *cp;
|
|
for (cp = s; *cp; cp++)
|
|
if (*cp == '\''
|
|
|| *cp == '"'
|
|
|| *cp == '\\'
|
|
|| isspace ((unsigned char) *cp)
|
|
|| *cp == ','
|
|
|| *cp == ';')
|
|
needs_quotes = 1;
|
|
if (needs_quotes)
|
|
{
|
|
putc ('"', f);
|
|
while (*s)
|
|
{
|
|
if (*s == '"' || *s == '\\')
|
|
putc ('\\', f);
|
|
putc (*s, f);
|
|
s++;
|
|
}
|
|
putc ('"', f);
|
|
}
|
|
else
|
|
fputs (s, f);
|
|
}
|
|
|
|
void
|
|
pe_dll_generate_def_file (pe_out_def_filename)
|
|
const char *pe_out_def_filename;
|
|
{
|
|
int i;
|
|
FILE *out = fopen (pe_out_def_filename, "w");
|
|
if (out == NULL)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%s: Can't open output def file %s\n"),
|
|
program_name, pe_out_def_filename);
|
|
}
|
|
|
|
if (pe_def_file)
|
|
{
|
|
if (pe_def_file->name)
|
|
{
|
|
if (pe_def_file->is_dll)
|
|
fprintf (out, "LIBRARY ");
|
|
else
|
|
fprintf (out, "NAME ");
|
|
quoteput (pe_def_file->name, out, 1);
|
|
if (pe_data (output_bfd)->pe_opthdr.ImageBase)
|
|
fprintf (out, " BASE=0x%lx",
|
|
(unsigned long) pe_data (output_bfd)->pe_opthdr.ImageBase);
|
|
fprintf (out, "\n");
|
|
}
|
|
|
|
if (pe_def_file->description)
|
|
{
|
|
fprintf (out, "DESCRIPTION ");
|
|
quoteput (pe_def_file->description, out, 1);
|
|
fprintf (out, "\n");
|
|
}
|
|
|
|
if (pe_def_file->version_minor != -1)
|
|
fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major,
|
|
pe_def_file->version_minor);
|
|
else if (pe_def_file->version_major != -1)
|
|
fprintf (out, "VERSION %d\n", pe_def_file->version_major);
|
|
|
|
if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1)
|
|
fprintf (out, "\n");
|
|
|
|
if (pe_def_file->stack_commit != -1)
|
|
fprintf (out, "STACKSIZE 0x%x,0x%x\n",
|
|
pe_def_file->stack_reserve, pe_def_file->stack_commit);
|
|
else if (pe_def_file->stack_reserve != -1)
|
|
fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve);
|
|
if (pe_def_file->heap_commit != -1)
|
|
fprintf (out, "HEAPSIZE 0x%x,0x%x\n",
|
|
pe_def_file->heap_reserve, pe_def_file->heap_commit);
|
|
else if (pe_def_file->heap_reserve != -1)
|
|
fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve);
|
|
|
|
if (pe_def_file->num_section_defs > 0)
|
|
{
|
|
fprintf (out, "\nSECTIONS\n\n");
|
|
for (i = 0; i < pe_def_file->num_section_defs; i++)
|
|
{
|
|
fprintf (out, " ");
|
|
quoteput (pe_def_file->section_defs[i].name, out, 0);
|
|
if (pe_def_file->section_defs[i].class)
|
|
{
|
|
fprintf (out, " CLASS ");
|
|
quoteput (pe_def_file->section_defs[i].class, out, 0);
|
|
}
|
|
if (pe_def_file->section_defs[i].flag_read)
|
|
fprintf (out, " READ");
|
|
if (pe_def_file->section_defs[i].flag_write)
|
|
fprintf (out, " WRITE");
|
|
if (pe_def_file->section_defs[i].flag_execute)
|
|
fprintf (out, " EXECUTE");
|
|
if (pe_def_file->section_defs[i].flag_shared)
|
|
fprintf (out, " SHARED");
|
|
fprintf (out, "\n");
|
|
}
|
|
}
|
|
|
|
if (pe_def_file->num_exports > 0)
|
|
{
|
|
fprintf (out, "\nEXPORTS\n\n");
|
|
for (i = 0; i < pe_def_file->num_exports; i++)
|
|
{
|
|
def_file_export *e = pe_def_file->exports + i;
|
|
fprintf (out, " ");
|
|
quoteput (e->name, out, 0);
|
|
if (e->internal_name && strcmp (e->internal_name, e->name))
|
|
{
|
|
fprintf (out, " = ");
|
|
quoteput (e->internal_name, out, 0);
|
|
}
|
|
if (e->ordinal != -1)
|
|
fprintf (out, " @%d", e->ordinal);
|
|
if (e->flag_private)
|
|
fprintf (out, " PRIVATE");
|
|
if (e->flag_constant)
|
|
fprintf (out, " CONSTANT");
|
|
if (e->flag_noname)
|
|
fprintf (out, " NONAME");
|
|
if (e->flag_data)
|
|
fprintf (out, " DATA");
|
|
|
|
fprintf (out, "\n");
|
|
}
|
|
}
|
|
|
|
if (pe_def_file->num_imports > 0)
|
|
{
|
|
fprintf (out, "\nIMPORTS\n\n");
|
|
for (i = 0; i < pe_def_file->num_imports; i++)
|
|
{
|
|
def_file_import *im = pe_def_file->imports + i;
|
|
fprintf (out, " ");
|
|
if (im->internal_name
|
|
&& (!im->name || strcmp (im->internal_name, im->name)))
|
|
{
|
|
quoteput (im->internal_name, out, 0);
|
|
fprintf (out, " = ");
|
|
}
|
|
quoteput (im->module->name, out, 0);
|
|
fprintf (out, ".");
|
|
if (im->name)
|
|
quoteput (im->name, out, 0);
|
|
else
|
|
fprintf (out, "%d", im->ordinal);
|
|
fprintf (out, "\n");
|
|
}
|
|
}
|
|
}
|
|
else
|
|
fprintf (out, _("; no contents available\n"));
|
|
|
|
if (fclose (out) == EOF)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename);
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
|
|
Generate the import library
|
|
|
|
************************************************************************/
|
|
|
|
static asymbol **symtab;
|
|
static int symptr;
|
|
static int tmp_seq;
|
|
static const char *dll_filename;
|
|
static char *dll_symname;
|
|
|
|
#define UNDSEC (asection *) &bfd_und_section
|
|
|
|
static asection *
|
|
quick_section(abfd, name, flags, align)
|
|
bfd *abfd;
|
|
const char *name;
|
|
int flags;
|
|
int align;
|
|
{
|
|
asection *sec;
|
|
asymbol *sym;
|
|
|
|
sec = bfd_make_section_old_way (abfd, name);
|
|
bfd_set_section_flags (abfd, sec, flags
|
|
| SEC_ALLOC
|
|
| SEC_LOAD
|
|
| SEC_KEEP
|
|
);
|
|
bfd_set_section_alignment (abfd, sec, align);
|
|
/* remember to undo this before trying to link internally! */
|
|
sec->output_section = sec;
|
|
|
|
sym = bfd_make_empty_symbol (abfd);
|
|
symtab[symptr++] = sym;
|
|
sym->name = sec->name;
|
|
sym->section = sec;
|
|
sym->flags = BSF_LOCAL;
|
|
sym->value = 0;
|
|
|
|
return sec;
|
|
}
|
|
|
|
static void
|
|
quick_symbol (abfd, n1, n2, n3, sec, flags, addr)
|
|
bfd *abfd;
|
|
char *n1;
|
|
char *n2;
|
|
char *n3;
|
|
asection *sec;
|
|
int flags;
|
|
int addr;
|
|
{
|
|
asymbol *sym;
|
|
char *name = (char *) xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1);
|
|
strcpy (name, n1);
|
|
strcat (name, n2);
|
|
strcat (name, n3);
|
|
sym = bfd_make_empty_symbol (abfd);
|
|
sym->name = name;
|
|
sym->section = sec;
|
|
sym->flags = flags;
|
|
sym->value = addr;
|
|
symtab[symptr++] = sym;
|
|
}
|
|
|
|
static arelent *reltab = 0;
|
|
static int relcount = 0, relsize = 0;
|
|
|
|
static void
|
|
quick_reloc (abfd, address, which_howto, symidx)
|
|
bfd *abfd;
|
|
int address;
|
|
int which_howto;
|
|
int symidx;
|
|
{
|
|
if (relcount >= (relsize-1))
|
|
{
|
|
relsize += 10;
|
|
if (reltab)
|
|
reltab = (arelent *) xrealloc (reltab, relsize * sizeof (arelent));
|
|
else
|
|
reltab = (arelent *) xmalloc (relsize * sizeof (arelent));
|
|
}
|
|
reltab[relcount].address = address;
|
|
reltab[relcount].addend = 0;
|
|
reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto);
|
|
reltab[relcount].sym_ptr_ptr = symtab + symidx;
|
|
relcount++;
|
|
}
|
|
|
|
static void
|
|
save_relocs (asection *sec)
|
|
{
|
|
int i;
|
|
sec->relocation = reltab;
|
|
sec->reloc_count = relcount;
|
|
sec->orelocation = (arelent **) xmalloc ((relcount+1) * sizeof (arelent *));
|
|
for (i=0; i<relcount; i++)
|
|
sec->orelocation[i] = sec->relocation + i;
|
|
sec->orelocation[relcount] = 0;
|
|
sec->flags |= SEC_RELOC;
|
|
reltab = 0;
|
|
relcount = relsize = 0;
|
|
}
|
|
|
|
/*
|
|
* .section .idata$2
|
|
* .global __head_my_dll
|
|
* __head_my_dll:
|
|
* .rva hname
|
|
* .long 0
|
|
* .long 0
|
|
* .rva __my_dll_iname
|
|
* .rva fthunk
|
|
*
|
|
* .section .idata$5
|
|
* .long 0
|
|
* fthunk:
|
|
*
|
|
* .section .idata$4
|
|
* .long 0
|
|
* hname:
|
|
*/
|
|
|
|
static bfd *
|
|
make_head (parent)
|
|
bfd *parent;
|
|
{
|
|
asection *id2, *id5, *id4;
|
|
unsigned char *d2, *d5, *d4;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = (char *) xmalloc (20);
|
|
sprintf (oname, "d%06d.o", tmp_seq);
|
|
tmp_seq++;
|
|
|
|
abfd = bfd_create (oname, parent);
|
|
bfd_find_target (pe_details->object_target, abfd);
|
|
bfd_make_writable (abfd);
|
|
|
|
bfd_set_format (abfd, bfd_object);
|
|
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
|
|
|
|
symptr = 0;
|
|
symtab = (asymbol **) xmalloc (6 * sizeof (asymbol *));
|
|
id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2);
|
|
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
|
|
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
|
|
quick_symbol (abfd, U("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, U(""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
|
|
|
|
/* OK, pay attention here. I got confused myself looking back at
|
|
it. We create a four-byte section to mark the beginning of the
|
|
list, and we include an offset of 4 in the section, so that the
|
|
pointer to the list points to the *end* of this section, which is
|
|
the start of the list of sections from other objects. */
|
|
|
|
bfd_set_section_size (abfd, id2, 20);
|
|
d2 = (unsigned char *) xmalloc (20);
|
|
id2->contents = d2;
|
|
memset (d2, 0, 20);
|
|
d2[0] = d2[16] = 4; /* reloc addend */
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
|
|
quick_reloc (abfd, 12, BFD_RELOC_RVA, 4);
|
|
quick_reloc (abfd, 16, BFD_RELOC_RVA, 1);
|
|
save_relocs (id2);
|
|
|
|
bfd_set_section_size (abfd, id5, 4);
|
|
d5 = (unsigned char *) xmalloc (4);
|
|
id5->contents = d5;
|
|
memset (d5, 0, 4);
|
|
|
|
bfd_set_section_size (abfd, id4, 4);
|
|
d4 = (unsigned char *) xmalloc (4);
|
|
id4->contents = d4;
|
|
memset (d4, 0, 4);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id2, d2, 0, 20);
|
|
bfd_set_section_contents (abfd, id5, d5, 0, 4);
|
|
bfd_set_section_contents (abfd, id4, d4, 0, 4);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
/*
|
|
* .section .idata$4
|
|
* .long 0
|
|
* .section .idata$5
|
|
* .long 0
|
|
* .section idata$7
|
|
* .global __my_dll_iname
|
|
*__my_dll_iname:
|
|
* .asciz "my.dll"
|
|
*/
|
|
|
|
static bfd *
|
|
make_tail (parent)
|
|
bfd *parent;
|
|
{
|
|
asection *id4, *id5, *id7;
|
|
unsigned char *d4, *d5, *d7;
|
|
int len;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = (char *) xmalloc (20);
|
|
sprintf (oname, "d%06d.o", tmp_seq);
|
|
tmp_seq++;
|
|
|
|
abfd = bfd_create (oname, parent);
|
|
bfd_find_target (pe_details->object_target, abfd);
|
|
bfd_make_writable (abfd);
|
|
|
|
bfd_set_format (abfd, bfd_object);
|
|
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
|
|
|
|
symptr = 0;
|
|
symtab = (asymbol **) xmalloc (5 * sizeof (asymbol *));
|
|
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
|
|
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
|
|
id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
|
|
quick_symbol (abfd, U(""), dll_symname, "_iname", id7, BSF_GLOBAL, 0);
|
|
|
|
bfd_set_section_size (abfd, id4, 4);
|
|
d4 = (unsigned char *) xmalloc (4);
|
|
id4->contents = d4;
|
|
memset (d4, 0, 4);
|
|
|
|
bfd_set_section_size (abfd, id5, 4);
|
|
d5 = (unsigned char *) xmalloc (4);
|
|
id5->contents = d5;
|
|
memset (d5, 0, 4);
|
|
|
|
len = strlen (dll_filename)+1;
|
|
if (len & 1)
|
|
len ++;
|
|
bfd_set_section_size (abfd, id7, len);
|
|
d7 = (unsigned char *) xmalloc (len);
|
|
id7->contents = d7;
|
|
strcpy (d7, dll_filename);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id4, d4, 0, 4);
|
|
bfd_set_section_contents (abfd, id5, d5, 0, 4);
|
|
bfd_set_section_contents (abfd, id7, d7, 0, len);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
/*
|
|
* .text
|
|
* .global _function
|
|
* .global ___imp_function
|
|
* .global __imp__function
|
|
*_function:
|
|
* jmp *__imp__function:
|
|
*
|
|
* .section idata$7
|
|
* .long __head_my_dll
|
|
*
|
|
* .section .idata$5
|
|
*___imp_function:
|
|
*__imp__function:
|
|
*iat?
|
|
* .section .idata$4
|
|
*iat?
|
|
* .section .idata$6
|
|
*ID<ordinal>:
|
|
* .short <hint>
|
|
* .asciz "function" xlate? (add underscore, kill at)
|
|
*/
|
|
|
|
static unsigned char jmp_ix86_bytes[] = {
|
|
0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
|
|
};
|
|
|
|
/*
|
|
*_function:
|
|
* mov.l ip+8,r0
|
|
* mov.l @r0,r0
|
|
* jmp @r0
|
|
* nop
|
|
* .dw __imp_function
|
|
*/
|
|
|
|
static unsigned char jmp_sh_bytes[] = {
|
|
0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
/*
|
|
*_function:
|
|
* lui $t0,<high:__imp_function>
|
|
* lw $t0,<low:__imp_function>
|
|
* jr $t0
|
|
* nop
|
|
*/
|
|
|
|
static unsigned char jmp_mips_bytes[] = {
|
|
0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
|
|
0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
static bfd *
|
|
make_one (exp, parent)
|
|
def_file_export *exp;
|
|
bfd *parent;
|
|
{
|
|
asection *tx, *id7, *id5, *id4, *id6;
|
|
unsigned char *td, *d7, *d5, *d4, *d6 = NULL;
|
|
int len;
|
|
char *oname;
|
|
bfd *abfd;
|
|
unsigned char *jmp_bytes = NULL;
|
|
int jmp_byte_count = 0;
|
|
|
|
switch (pe_details->pe_arch)
|
|
{
|
|
case PE_ARCH_i386:
|
|
jmp_bytes = jmp_ix86_bytes;
|
|
jmp_byte_count = sizeof (jmp_ix86_bytes);
|
|
break;
|
|
case PE_ARCH_sh:
|
|
jmp_bytes = jmp_sh_bytes;
|
|
jmp_byte_count = sizeof (jmp_sh_bytes);
|
|
break;
|
|
case PE_ARCH_mips:
|
|
jmp_bytes = jmp_mips_bytes;
|
|
jmp_byte_count = sizeof (jmp_mips_bytes);
|
|
break;
|
|
}
|
|
|
|
oname = (char *) xmalloc (20);
|
|
sprintf (oname, "d%06d.o", tmp_seq);
|
|
tmp_seq++;
|
|
|
|
abfd = bfd_create (oname, parent);
|
|
bfd_find_target (pe_details->object_target, abfd);
|
|
bfd_make_writable (abfd);
|
|
|
|
bfd_set_format (abfd, bfd_object);
|
|
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
|
|
|
|
symptr = 0;
|
|
symtab = (asymbol **) xmalloc (10 * sizeof (asymbol *));
|
|
tx = quick_section (abfd, ".text", SEC_CODE|SEC_HAS_CONTENTS, 2);
|
|
id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
|
|
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
|
|
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
|
|
id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2);
|
|
if (! exp->flag_data)
|
|
quick_symbol (abfd, U(""), exp->internal_name, "", tx, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, U("_head_"), dll_symname, "", UNDSEC, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, U("_imp__"), exp->internal_name, "", id5, BSF_GLOBAL, 0);
|
|
if (pe_dll_compat_implib)
|
|
quick_symbol (abfd, U("__imp_"), exp->internal_name, "",
|
|
id5, BSF_GLOBAL, 0);
|
|
|
|
bfd_set_section_size (abfd, tx, jmp_byte_count);
|
|
td = (unsigned char *) xmalloc (jmp_byte_count);
|
|
tx->contents = td;
|
|
memcpy (td, jmp_bytes, jmp_byte_count);
|
|
switch (pe_details->pe_arch)
|
|
{
|
|
case PE_ARCH_i386:
|
|
quick_reloc (abfd, 2, BFD_RELOC_32, 2);
|
|
break;
|
|
case PE_ARCH_sh:
|
|
quick_reloc (abfd, 8, BFD_RELOC_32, 2);
|
|
break;
|
|
case PE_ARCH_mips:
|
|
quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2);
|
|
quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */
|
|
quick_reloc (abfd, 4, BFD_RELOC_LO16, 2);
|
|
break;
|
|
}
|
|
save_relocs (tx);
|
|
|
|
bfd_set_section_size (abfd, id7, 4);
|
|
d7 = (unsigned char *) xmalloc (4);
|
|
id7->contents = d7;
|
|
memset (d7, 0, 4);
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 6);
|
|
save_relocs (id7);
|
|
|
|
bfd_set_section_size (abfd, id5, 4);
|
|
d5 = (unsigned char *) xmalloc (4);
|
|
id5->contents = d5;
|
|
memset (d5, 0, 4);
|
|
if (exp->flag_noname)
|
|
{
|
|
d5[0] = exp->ordinal;
|
|
d5[1] = exp->ordinal >> 8;
|
|
d5[3] = 0x80;
|
|
}
|
|
else
|
|
{
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
|
|
save_relocs (id5);
|
|
}
|
|
|
|
bfd_set_section_size (abfd, id4, 4);
|
|
d4 = (unsigned char *) xmalloc (4);
|
|
id4->contents = d4;
|
|
memset (d4, 0, 4);
|
|
if (exp->flag_noname)
|
|
{
|
|
d5[0] = exp->ordinal;
|
|
d5[1] = exp->ordinal >> 8;
|
|
d5[3] = 0x80;
|
|
}
|
|
else
|
|
{
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
|
|
save_relocs (id4);
|
|
}
|
|
|
|
if (exp->flag_noname)
|
|
{
|
|
len = 0;
|
|
bfd_set_section_size (abfd, id6, 0);
|
|
}
|
|
else
|
|
{
|
|
len = strlen (exp->name) + 3;
|
|
if (len & 1)
|
|
len++;
|
|
bfd_set_section_size (abfd, id6, len);
|
|
d6 = (unsigned char *) xmalloc (len);
|
|
id6->contents = d6;
|
|
memset (d6, 0, len);
|
|
d6[0] = exp->hint & 0xff;
|
|
d6[1] = exp->hint >> 8;
|
|
strcpy (d6+2, exp->name);
|
|
}
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, tx, td, 0, jmp_byte_count);
|
|
bfd_set_section_contents (abfd, id7, d7, 0, 4);
|
|
bfd_set_section_contents (abfd, id5, d5, 0, 4);
|
|
bfd_set_section_contents (abfd, id4, d4, 0, 4);
|
|
if (!exp->flag_noname)
|
|
bfd_set_section_contents (abfd, id6, d6, 0, len);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
void
|
|
pe_dll_generate_implib (def, impfilename)
|
|
def_file *def;
|
|
const char *impfilename;
|
|
{
|
|
int i;
|
|
bfd *ar_head;
|
|
bfd *ar_tail;
|
|
bfd *outarch;
|
|
bfd *head = 0;
|
|
|
|
dll_filename = (def->name) ? def->name : dll_name;
|
|
dll_symname = xstrdup (dll_filename);
|
|
for (i=0; dll_symname[i]; i++)
|
|
if (!isalnum ((unsigned char) dll_symname[i]))
|
|
dll_symname[i] = '_';
|
|
|
|
unlink (impfilename);
|
|
|
|
outarch = bfd_openw (impfilename, 0);
|
|
|
|
if (!outarch)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XCan't open .lib file: %s\n"), impfilename);
|
|
return;
|
|
}
|
|
|
|
/* xgettext:c-format */
|
|
einfo (_("Creating library file: %s\n"), impfilename);
|
|
|
|
bfd_set_format (outarch, bfd_archive);
|
|
outarch->has_armap = 1;
|
|
|
|
/* Work out a reasonable size of things to put onto one line. */
|
|
|
|
ar_head = make_head (outarch);
|
|
|
|
for (i = 0; i<def->num_exports; i++)
|
|
{
|
|
/* The import library doesn't know about the internal name */
|
|
char *internal = def->exports[i].internal_name;
|
|
bfd *n;
|
|
def->exports[i].internal_name = def->exports[i].name;
|
|
n = make_one (def->exports+i, outarch);
|
|
n->next = head;
|
|
head = n;
|
|
def->exports[i].internal_name = internal;
|
|
}
|
|
|
|
ar_tail = make_tail (outarch);
|
|
|
|
if (ar_head == NULL || ar_tail == NULL)
|
|
return;
|
|
|
|
/* Now stick them all into the archive */
|
|
|
|
ar_head->next = head;
|
|
ar_tail->next = ar_head;
|
|
head = ar_tail;
|
|
|
|
if (! bfd_set_archive_head (outarch, head))
|
|
einfo ("%Xbfd_set_archive_head: %s\n", bfd_errmsg (bfd_get_error ()));
|
|
|
|
if (! bfd_close (outarch))
|
|
einfo ("%Xbfd_close %s: %s\n", impfilename, bfd_errmsg (bfd_get_error ()));
|
|
|
|
while (head != NULL)
|
|
{
|
|
bfd *n = head->next;
|
|
bfd_close (head);
|
|
head = n;
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_bfd_to_link (abfd, name, link_info)
|
|
bfd *abfd;
|
|
char *name;
|
|
struct bfd_link_info *link_info;
|
|
{
|
|
lang_input_statement_type *fake_file;
|
|
fake_file = lang_add_input_file (name,
|
|
lang_input_file_is_fake_enum,
|
|
NULL);
|
|
fake_file->the_bfd = abfd;
|
|
ldlang_add_file (fake_file);
|
|
if (!bfd_link_add_symbols (abfd, link_info))
|
|
einfo ("%Xaddsym %s: %s\n", name, bfd_errmsg (bfd_get_error ()));
|
|
}
|
|
|
|
void
|
|
pe_process_import_defs (output_bfd, link_info)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *link_info;
|
|
{
|
|
def_file_module *module;
|
|
pe_dll_id_target(bfd_get_target (output_bfd));
|
|
|
|
if (!pe_def_file)
|
|
return;
|
|
|
|
for (module = pe_def_file->modules; module; module = module->next)
|
|
{
|
|
int i, do_this_dll;
|
|
|
|
dll_filename = module->name;
|
|
dll_symname = xstrdup (module->name);
|
|
for (i=0; dll_symname[i]; i++)
|
|
if (!isalnum (dll_symname[i]))
|
|
dll_symname[i] = '_';
|
|
|
|
do_this_dll = 0;
|
|
|
|
for (i=0; i<pe_def_file->num_imports; i++)
|
|
if (pe_def_file->imports[i].module == module)
|
|
{
|
|
def_file_export exp;
|
|
struct bfd_link_hash_entry *blhe;
|
|
|
|
/* see if we need this import */
|
|
char *name = (char *) xmalloc (strlen (pe_def_file->imports[i].internal_name) + 2 + 6);
|
|
sprintf (name, "%s%s", U(""), pe_def_file->imports[i].internal_name);
|
|
blhe = bfd_link_hash_lookup (link_info->hash, name,
|
|
false, false, false);
|
|
if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined))
|
|
{
|
|
sprintf (name, "%s%s", U("_imp__"),
|
|
pe_def_file->imports[i].internal_name);
|
|
blhe = bfd_link_hash_lookup (link_info->hash, name,
|
|
false, false, false);
|
|
}
|
|
free (name);
|
|
if (blhe && blhe->type == bfd_link_hash_undefined)
|
|
{
|
|
bfd *one;
|
|
/* we do */
|
|
if (!do_this_dll)
|
|
{
|
|
bfd *ar_head = make_head (output_bfd);
|
|
add_bfd_to_link (ar_head, ar_head->filename, link_info);
|
|
do_this_dll = 1;
|
|
}
|
|
exp.internal_name = pe_def_file->imports[i].internal_name;
|
|
exp.name = pe_def_file->imports[i].name;
|
|
exp.ordinal = pe_def_file->imports[i].ordinal;
|
|
exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0;
|
|
exp.flag_private = 0;
|
|
exp.flag_constant = 0;
|
|
exp.flag_data = 0;
|
|
exp.flag_noname = exp.name ? 0 : 1;
|
|
one = make_one (&exp, output_bfd);
|
|
add_bfd_to_link (one, one->filename, link_info);
|
|
}
|
|
}
|
|
if (do_this_dll)
|
|
{
|
|
bfd *ar_tail = make_tail (output_bfd);
|
|
add_bfd_to_link (ar_tail, ar_tail->filename, link_info);
|
|
}
|
|
|
|
free (dll_symname);
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
|
|
We were handed a *.DLL file. Parse it and turn it into a set of
|
|
IMPORTS directives in the def file. Return true if the file was
|
|
handled, false if not.
|
|
|
|
************************************************************************/
|
|
|
|
static unsigned int
|
|
pe_get16 (abfd, where)
|
|
bfd *abfd;
|
|
int where;
|
|
{
|
|
unsigned char b[2];
|
|
bfd_seek (abfd, where, SEEK_SET);
|
|
bfd_read (b, 1, 2, abfd);
|
|
return b[0] + (b[1]<<8);
|
|
}
|
|
|
|
static unsigned int
|
|
pe_get32 (abfd, where)
|
|
bfd *abfd;
|
|
int where;
|
|
{
|
|
unsigned char b[4];
|
|
bfd_seek (abfd, where, SEEK_SET);
|
|
bfd_read (b, 1, 4, abfd);
|
|
return b[0] + (b[1]<<8) + (b[2]<<16) + (b[3]<<24);
|
|
}
|
|
|
|
#if 0 /* This is not currently used. */
|
|
|
|
static unsigned int
|
|
pe_as16 (ptr)
|
|
void *ptr;
|
|
{
|
|
unsigned char *b = ptr;
|
|
return b[0] + (b[1]<<8);
|
|
}
|
|
|
|
#endif
|
|
|
|
static unsigned int
|
|
pe_as32 (ptr)
|
|
void *ptr;
|
|
{
|
|
unsigned char *b = ptr;
|
|
return b[0] + (b[1]<<8) + (b[2]<<16) + (b[3]<<24);
|
|
}
|
|
|
|
boolean
|
|
pe_implied_import_dll (filename)
|
|
const char *filename;
|
|
{
|
|
bfd *dll;
|
|
unsigned long pe_header_offset, opthdr_ofs, num_entries, i;
|
|
unsigned long export_rva, export_size, nsections, secptr, expptr;
|
|
unsigned char *expdata, *erva;
|
|
unsigned long name_rvas, ordinals, nexp, ordbase;
|
|
const char *dll_name;
|
|
|
|
/* No, I can't use bfd here. kernel32.dll puts its export table in
|
|
the middle of the .rdata section. */
|
|
|
|
dll = bfd_openr (filename, pe_details->target_name);
|
|
if (!dll)
|
|
{
|
|
einfo ("%Xopen %s: %s\n", filename, bfd_errmsg (bfd_get_error ()));
|
|
return false;
|
|
}
|
|
/* PEI dlls seem to be bfd_objects */
|
|
if (!bfd_check_format (dll, bfd_object))
|
|
{
|
|
einfo ("%X%s: this doesn't appear to be a DLL\n", filename);
|
|
return false;
|
|
}
|
|
|
|
dll_name = filename;
|
|
for (i=0; filename[i]; i++)
|
|
if (filename[i] == '/' || filename[i] == '\\' || filename[i] == ':')
|
|
dll_name = filename + i + 1;
|
|
|
|
pe_header_offset = pe_get32 (dll, 0x3c);
|
|
opthdr_ofs = pe_header_offset + 4 + 20;
|
|
num_entries = pe_get32 (dll, opthdr_ofs + 92);
|
|
if (num_entries < 1) /* no exports */
|
|
return false;
|
|
export_rva = pe_get32 (dll, opthdr_ofs + 96);
|
|
export_size = pe_get32 (dll, opthdr_ofs + 100);
|
|
nsections = pe_get16 (dll, pe_header_offset + 4 + 2);
|
|
secptr = (pe_header_offset + 4 + 20 +
|
|
pe_get16 (dll, pe_header_offset + 4 + 16));
|
|
expptr = 0;
|
|
for (i=0; i<nsections; i++)
|
|
{
|
|
char sname[8];
|
|
unsigned long secptr1 = secptr + 40 * i;
|
|
unsigned long vaddr = pe_get32 (dll, secptr1 + 12);
|
|
unsigned long vsize = pe_get32 (dll, secptr1 + 16);
|
|
unsigned long fptr = pe_get32 (dll, secptr1 + 20);
|
|
bfd_seek(dll, secptr1, SEEK_SET);
|
|
bfd_read(sname, 1, 8, dll);
|
|
if (vaddr <= export_rva && vaddr+vsize > export_rva)
|
|
{
|
|
expptr = fptr + (export_rva - vaddr);
|
|
if (export_rva + export_size > vaddr + vsize)
|
|
export_size = vsize - (export_rva - vaddr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
expdata = (unsigned char *) xmalloc (export_size);
|
|
bfd_seek (dll, expptr, SEEK_SET);
|
|
bfd_read (expdata, 1, export_size, dll);
|
|
erva = expdata - export_rva;
|
|
|
|
if (pe_def_file == 0)
|
|
pe_def_file = def_file_empty();
|
|
|
|
nexp = pe_as32 (expdata+24);
|
|
name_rvas = pe_as32 (expdata+32);
|
|
ordinals = pe_as32 (expdata+36);
|
|
ordbase = pe_as32 (expdata+16);
|
|
for (i=0; i<nexp; i++)
|
|
{
|
|
unsigned long name_rva = pe_as32 (erva+name_rvas+i*4);
|
|
def_file_import *imp;
|
|
imp = def_file_add_import (pe_def_file, erva+name_rva, dll_name,
|
|
i, 0);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/************************************************************************
|
|
|
|
These are the main functions, called from the emulation. The first
|
|
is called after the bfds are read, so we can guess at how much space
|
|
we need. The second is called after everything is placed, so we
|
|
can put the right values in place.
|
|
|
|
************************************************************************/
|
|
|
|
void
|
|
pe_dll_build_sections (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info;
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
process_def_file (abfd, info);
|
|
|
|
generate_edata (abfd, info);
|
|
build_filler_bfd (1);
|
|
}
|
|
|
|
void
|
|
pe_exe_build_sections (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
build_filler_bfd (0);
|
|
}
|
|
|
|
void
|
|
pe_dll_fill_sections (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info;
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
image_base = pe_data (abfd)->pe_opthdr.ImageBase;
|
|
|
|
generate_reloc (abfd, info);
|
|
if (reloc_sz > 0)
|
|
{
|
|
bfd_set_section_size (filler_bfd, reloc_s, reloc_sz);
|
|
|
|
/* Resize the sections. */
|
|
lang_size_sections (stat_ptr->head, abs_output_section,
|
|
&stat_ptr->head, 0, (bfd_vma) 0, false);
|
|
|
|
/* Redo special stuff. */
|
|
ldemul_after_allocation ();
|
|
|
|
/* Do the assignments again. */
|
|
lang_do_assignments (stat_ptr->head,
|
|
abs_output_section,
|
|
(fill_type) 0, (bfd_vma) 0);
|
|
}
|
|
|
|
fill_edata (abfd, info);
|
|
|
|
pe_data (abfd)->dll = 1;
|
|
|
|
edata_s->contents = edata_d;
|
|
reloc_s->contents = reloc_d;
|
|
}
|
|
|
|
void
|
|
pe_exe_fill_sections (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info;
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
image_base = pe_data (abfd)->pe_opthdr.ImageBase;
|
|
|
|
generate_reloc (abfd, info);
|
|
if (reloc_sz > 0)
|
|
{
|
|
bfd_set_section_size (filler_bfd, reloc_s, reloc_sz);
|
|
|
|
/* Resize the sections. */
|
|
lang_size_sections (stat_ptr->head, abs_output_section,
|
|
&stat_ptr->head, 0, (bfd_vma) 0, false);
|
|
|
|
/* Redo special stuff. */
|
|
ldemul_after_allocation ();
|
|
|
|
/* Do the assignments again. */
|
|
lang_do_assignments (stat_ptr->head,
|
|
abs_output_section,
|
|
(fill_type) 0, (bfd_vma) 0);
|
|
}
|
|
reloc_s->contents = reloc_d;
|
|
}
|