forked from KolibriOS/kolibrios
3453 lines
92 KiB
C
3453 lines
92 KiB
C
/* Routines to help build PEI-format DLLs (Win32 etc)
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Copyright (C) 1998-2015 Free Software Foundation, Inc.
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Written by DJ Delorie <dj@cygnus.com>
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This file is part of the GNU Binutils.
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This program 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 3 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libiberty.h"
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#include "filenames.h"
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#include "safe-ctype.h"
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#include <time.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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#ifdef pe_use_x86_64
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#define PE_IDATA4_SIZE 8
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#define PE_IDATA5_SIZE 8
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#include "pep-dll.h"
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#undef AOUTSZ
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#define AOUTSZ PEPAOUTSZ
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#define PEAOUTHDR PEPAOUTHDR
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#else
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#include "pe-dll.h"
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#endif
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#ifndef PE_IDATA4_SIZE
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#define PE_IDATA4_SIZE 4
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#endif
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#ifndef PE_IDATA5_SIZE
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#define PE_IDATA5_SIZE 4
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#endif
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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 and ld/emultempl/pep.em. */
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/* Auto-import feature by Paul Sokolovsky
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Quick facts:
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1. With this feature on, DLL clients can import variables from DLL
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without any concern from their side (for example, without any source
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code modifications).
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2. This is done completely in bounds of the PE specification (to be fair,
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there's a place where it pokes nose out of, but in practice it works).
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So, resulting module can be used with any other PE compiler/linker.
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3. Auto-import is fully compatible with standard import method and they
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can be mixed together.
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4. Overheads: space: 8 bytes per imported symbol, plus 20 for each
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reference to it; load time: negligible; virtual/physical memory: should be
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less than effect of DLL relocation, and I sincerely hope it doesn't affect
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DLL sharability (too much).
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Idea
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The obvious and only way to get rid of dllimport insanity is to make client
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access variable directly in the DLL, bypassing extra dereference. I.e.,
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whenever client contains something like
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mov dll_var,%eax,
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address of dll_var in the command should be relocated to point into loaded
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DLL. The aim is to make OS loader do so, and than make ld help with that.
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Import section of PE made following way: there's a vector of structures
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each describing imports from particular DLL. Each such structure points
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to two other parallel vectors: one holding imported names, and one which
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will hold address of corresponding imported name. So, the solution is
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de-vectorize these structures, making import locations be sparse and
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pointing directly into code. Before continuing, it is worth a note that,
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while authors strives to make PE act ELF-like, there're some other people
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make ELF act PE-like: elfvector, ;-) .
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Implementation
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For each reference of data symbol to be imported from DLL (to set of which
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belong symbols with name <sym>, if __imp_<sym> is found in implib), the
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import fixup entry is generated. That entry is of type
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IMAGE_IMPORT_DESCRIPTOR and stored in .idata$2 subsection. Each
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fixup entry contains pointer to symbol's address within .text section
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(marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name
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(so, DLL name is referenced by multiple entries), and pointer to symbol
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name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>)
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pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly
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containing imported name. Here comes that "on the edge" problem mentioned
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above: PE specification rambles that name vector (OriginalFirstThunk)
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should run in parallel with addresses vector (FirstThunk), i.e. that they
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should have same number of elements and terminated with zero. We violate
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this, since FirstThunk points directly into machine code. But in practice,
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OS loader implemented the sane way: it goes thru OriginalFirstThunk and
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puts addresses to FirstThunk, not something else. It once again should be
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noted that dll and symbol name structures are reused across fixup entries
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and should be there anyway to support standard import stuff, so sustained
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overhead is 20 bytes per reference. Other question is whether having several
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IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is
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done even by native compiler/linker (libth32's functions are in fact reside
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in windows9x kernel32.dll, so if you use it, you have two
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IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether
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referencing the same PE structures several times is valid. The answer is why
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not, prohibiting that (detecting violation) would require more work on
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behalf of loader than not doing it.
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See also: ld/emultempl/pe.em and ld/emultempl/pep.em. */
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static void add_bfd_to_link (bfd *, const char *, struct bfd_link_info *);
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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_exclude_all_symbols = 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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int pe_dll_extra_pe_debug = 0;
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int pe_use_nul_prefixed_import_tables = 0;
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int pe_use_coff_long_section_names = -1;
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int pe_leading_underscore = -1;
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/* Static variables and types. */
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static bfd_vma image_base;
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static bfd *filler_bfd;
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static struct bfd_section *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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static int runtime_pseudo_relocs_created = 0;
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static int runtime_pseudp_reloc_v2_init = 0;
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typedef struct
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{
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const char *name;
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int len;
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}
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autofilter_entry_type;
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typedef struct
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{
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const char *target_name;
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const 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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bfd_boolean underscored;
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const autofilter_entry_type* autofilter_symbollist;
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}
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pe_details_type;
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static const autofilter_entry_type autofilter_symbollist_generic[] =
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{
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{ STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
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/* Entry point symbols. */
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{ STRING_COMMA_LEN ("DllMain") },
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{ STRING_COMMA_LEN ("DllMainCRTStartup") },
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{ STRING_COMMA_LEN ("_DllMainCRTStartup") },
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/* Runtime pseudo-reloc. */
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{ STRING_COMMA_LEN ("_pei386_runtime_relocator") },
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{ STRING_COMMA_LEN ("do_pseudo_reloc") },
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{ NULL, 0 }
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};
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static const autofilter_entry_type autofilter_symbollist_i386[] =
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{
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{ STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
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/* Entry point symbols, and entry hooks. */
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{ STRING_COMMA_LEN ("cygwin_crt0") },
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#ifdef pe_use_x86_64
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{ STRING_COMMA_LEN ("DllMain") },
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{ STRING_COMMA_LEN ("DllEntryPoint") },
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{ STRING_COMMA_LEN ("DllMainCRTStartup") },
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{ STRING_COMMA_LEN ("_cygwin_dll_entry") },
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{ STRING_COMMA_LEN ("_cygwin_crt0_common") },
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{ STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry") },
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#else
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{ STRING_COMMA_LEN ("DllMain@12") },
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{ STRING_COMMA_LEN ("DllEntryPoint@0") },
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{ STRING_COMMA_LEN ("DllMainCRTStartup@12") },
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{ STRING_COMMA_LEN ("_cygwin_dll_entry@12") },
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{ STRING_COMMA_LEN ("_cygwin_crt0_common@8") },
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{ STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry@12") },
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{ STRING_COMMA_LEN ("cygwin_attach_dll") },
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#endif
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{ STRING_COMMA_LEN ("cygwin_premain0") },
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{ STRING_COMMA_LEN ("cygwin_premain1") },
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{ STRING_COMMA_LEN ("cygwin_premain2") },
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{ STRING_COMMA_LEN ("cygwin_premain3") },
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/* Runtime pseudo-reloc. */
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{ STRING_COMMA_LEN ("_pei386_runtime_relocator") },
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{ STRING_COMMA_LEN ("do_pseudo_reloc") },
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/* Global vars that should not be exported. */
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{ STRING_COMMA_LEN ("impure_ptr") },
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{ STRING_COMMA_LEN ("_impure_ptr") },
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{ STRING_COMMA_LEN ("_fmode") },
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{ STRING_COMMA_LEN ("environ") },
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{ STRING_COMMA_LEN ("__dso_handle") },
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{ NULL, 0 }
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};
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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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#define PE_ARCH_arm_epoc 5
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#define PE_ARCH_arm_wince 6
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/* Don't make it constant as underscore mode gets possibly overriden
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by target or -(no-)leading-underscore option. */
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static pe_details_type pe_detail_list[] =
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{
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{
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#ifdef pe_use_x86_64
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"pei-x86-64",
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"pe-x86-64",
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3 /* R_IMAGEBASE */,
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#else
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"pei-i386",
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"pe-i386",
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7 /* R_IMAGEBASE */,
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#endif
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PE_ARCH_i386,
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bfd_arch_i386,
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#ifdef pe_use_x86_64
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FALSE,
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#else
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TRUE,
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#endif
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autofilter_symbollist_i386
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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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TRUE,
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autofilter_symbollist_generic
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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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FALSE,
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autofilter_symbollist_generic
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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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TRUE,
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autofilter_symbollist_generic
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},
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{
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"epoc-pei-arm-little",
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"epoc-pe-arm-little",
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11 /* ARM_RVA32 */,
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PE_ARCH_arm_epoc,
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bfd_arch_arm,
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FALSE,
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autofilter_symbollist_generic
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},
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{
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"pei-arm-wince-little",
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"pe-arm-wince-little",
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2, /* ARM_RVA32 on Windows CE, see bfd/coff-arm.c. */
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PE_ARCH_arm_wince,
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bfd_arch_arm,
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FALSE,
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autofilter_symbollist_generic
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},
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{ NULL, NULL, 0, 0, 0, FALSE, NULL }
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};
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static const pe_details_type *pe_details;
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/* Do not specify library suffix explicitly, to allow for dllized versions. */
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static const autofilter_entry_type autofilter_liblist[] =
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{
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{ STRING_COMMA_LEN ("libcegcc") },
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{ STRING_COMMA_LEN ("libcygwin") },
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{ STRING_COMMA_LEN ("libgcc") },
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{ STRING_COMMA_LEN ("libgcc_s") },
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{ STRING_COMMA_LEN ("libstdc++") },
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{ STRING_COMMA_LEN ("libmingw32") },
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{ STRING_COMMA_LEN ("libmingwex") },
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{ STRING_COMMA_LEN ("libg2c") },
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{ STRING_COMMA_LEN ("libsupc++") },
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{ STRING_COMMA_LEN ("libobjc") },
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{ STRING_COMMA_LEN ("libgcj") },
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{ NULL, 0 }
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};
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/* Regardless of the suffix issue mentioned above, we must ensure that
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we do not falsely match on a leading substring, such as when libtool
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builds libstdc++ as a DLL using libsupc++convenience.a as an intermediate.
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This routine ensures that the leading part of the name matches and that
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it is followed by only an optional version suffix and a file extension,
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returning zero if so or -1 if not. */
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static int libnamencmp (const char *libname, const autofilter_entry_type *afptr)
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{
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if (filename_ncmp (libname, afptr->name, afptr->len))
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return -1;
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libname += afptr->len;
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/* Be liberal in interpreting what counts as a version suffix; we
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accept anything that has a dash to separate it from the name and
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begins with a digit. */
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if (libname[0] == '-')
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{
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if (!ISDIGIT (*++libname))
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return -1;
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/* Ensure the filename has an extension. */
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while (*++libname != '.')
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if (!*libname)
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return -1;
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}
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else if (libname[0] != '.')
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return -1;
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return 0;
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}
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static const autofilter_entry_type autofilter_objlist[] =
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{
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{ STRING_COMMA_LEN ("crt0.o") },
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{ STRING_COMMA_LEN ("crt1.o") },
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{ STRING_COMMA_LEN ("crt2.o") },
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{ STRING_COMMA_LEN ("dllcrt1.o") },
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{ STRING_COMMA_LEN ("dllcrt2.o") },
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{ STRING_COMMA_LEN ("gcrt0.o") },
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{ STRING_COMMA_LEN ("gcrt1.o") },
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{ STRING_COMMA_LEN ("gcrt2.o") },
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{ STRING_COMMA_LEN ("crtbegin.o") },
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{ STRING_COMMA_LEN ("crtend.o") },
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{ NULL, 0 }
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};
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static const autofilter_entry_type autofilter_symbolprefixlist[] =
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{
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/* _imp_ is treated specially, as it is always underscored. */
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/* { STRING_COMMA_LEN ("_imp_") }, */
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/* Don't export some c++ symbols. */
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{ STRING_COMMA_LEN ("__rtti_") },
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{ STRING_COMMA_LEN ("__builtin_") },
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/* Don't re-export auto-imported symbols. */
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{ STRING_COMMA_LEN ("__nm_") },
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/* Don't export symbols specifying internal DLL layout. */
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{ STRING_COMMA_LEN ("_head_") },
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{ STRING_COMMA_LEN ("_IMPORT_DESCRIPTOR_") },
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/* Don't export section labels or artificial symbols
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(eg ".weak.foo". */
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{ STRING_COMMA_LEN (".") },
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{ NULL, 0 }
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};
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static const autofilter_entry_type autofilter_symbolsuffixlist[] =
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{
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{ STRING_COMMA_LEN ("_iname") },
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{ STRING_COMMA_LEN ("_NULL_THUNK_DATA") },
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{ NULL, 0 }
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};
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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 (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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|| strcmp (pe_detail_list[i].object_target, target) == 0)
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{
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int u = pe_leading_underscore; /* Underscoring mode. -1 for use default. */
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if (u == -1)
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bfd_get_target_info (target, NULL, NULL, &u, NULL);
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if (u == -1)
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abort ();
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pe_detail_list[i].underscored = (u != 0 ? TRUE : FALSE);
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pe_details = pe_detail_list + i;
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pe_leading_underscore = (u != 0 ? 1 : 0);
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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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/* 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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typedef struct
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{
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bfd_vma vma;
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char type;
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short extra;
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}
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reloc_data_type;
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static int
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reloc_sort (const void *va, const void *vb)
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{
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bfd_vma a = ((const reloc_data_type *) va)->vma;
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bfd_vma b = ((const 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 (const void *va, const void *vb)
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{
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const def_file_export *a = va;
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const def_file_export *b = vb;
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char *an = a->name;
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char *bn = b->name;
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if (a->its_name)
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an = a->its_name;
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if (b->its_name)
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bn = b->its_name;
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return strcmp (an, bn);
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}
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/* Read and process the .DEF file. */
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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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|
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static bfd_vma *exported_symbol_offsets;
|
|
static struct bfd_section **exported_symbol_sections;
|
|
static int export_table_size;
|
|
static int count_exported;
|
|
static int count_exported_byname;
|
|
static int count_with_ordinals;
|
|
static const char *dll_name;
|
|
static int min_ordinal, max_ordinal;
|
|
static int *exported_symbols;
|
|
|
|
typedef struct exclude_list_struct
|
|
{
|
|
char *string;
|
|
struct exclude_list_struct *next;
|
|
exclude_type type;
|
|
}
|
|
exclude_list_struct;
|
|
|
|
static struct exclude_list_struct *excludes = 0;
|
|
|
|
void
|
|
pe_dll_add_excludes (const char *new_excludes, const exclude_type type)
|
|
{
|
|
char *local_copy;
|
|
char *exclude_string;
|
|
|
|
local_copy = xstrdup (new_excludes);
|
|
|
|
exclude_string = strtok (local_copy, ",:");
|
|
for (; exclude_string; exclude_string = strtok (NULL, ",:"))
|
|
{
|
|
struct exclude_list_struct *new_exclude;
|
|
|
|
new_exclude = xmalloc (sizeof (struct exclude_list_struct));
|
|
new_exclude->string = xmalloc (strlen (exclude_string) + 1);
|
|
strcpy (new_exclude->string, exclude_string);
|
|
new_exclude->type = type;
|
|
new_exclude->next = excludes;
|
|
excludes = new_exclude;
|
|
}
|
|
|
|
free (local_copy);
|
|
}
|
|
|
|
static bfd_boolean
|
|
is_import (const char* n)
|
|
{
|
|
return (CONST_STRNEQ (n, "__imp_"));
|
|
}
|
|
|
|
/* abfd is a bfd containing n (or NULL)
|
|
It can be used for contextual checks. */
|
|
|
|
static int
|
|
auto_export (bfd *abfd, def_file *d, const char *n)
|
|
{
|
|
def_file_export key;
|
|
struct exclude_list_struct *ex;
|
|
const autofilter_entry_type *afptr;
|
|
const char * libname = NULL;
|
|
|
|
if (abfd && abfd->my_archive)
|
|
libname = lbasename (abfd->my_archive->filename);
|
|
|
|
key.name = key.its_name = (char *) n;
|
|
|
|
/* Return false if n is in the d->exports table. */
|
|
if (bsearch (&key, d->exports, d->num_exports,
|
|
sizeof (pe_def_file->exports[0]), pe_export_sort))
|
|
return 0;
|
|
|
|
if (pe_dll_do_default_excludes)
|
|
{
|
|
const char * p;
|
|
int len;
|
|
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n",
|
|
n, abfd, abfd->my_archive);
|
|
|
|
/* First of all, make context checks:
|
|
Don't export anything from standard libs. */
|
|
if (libname)
|
|
{
|
|
afptr = autofilter_liblist;
|
|
|
|
while (afptr->name)
|
|
{
|
|
if (libnamencmp (libname, afptr) == 0 )
|
|
return 0;
|
|
afptr++;
|
|
}
|
|
}
|
|
|
|
/* Next, exclude symbols from certain startup objects. */
|
|
|
|
if (abfd && (p = lbasename (abfd->filename)))
|
|
{
|
|
afptr = autofilter_objlist;
|
|
while (afptr->name)
|
|
{
|
|
if (strcmp (p, afptr->name) == 0)
|
|
return 0;
|
|
afptr++;
|
|
}
|
|
}
|
|
|
|
/* Don't try to blindly exclude all symbols
|
|
that begin with '__'; this was tried and
|
|
it is too restrictive. Instead we have
|
|
a target specific list to use: */
|
|
afptr = pe_details->autofilter_symbollist;
|
|
|
|
while (afptr->name)
|
|
{
|
|
if (strcmp (n, afptr->name) == 0)
|
|
return 0;
|
|
|
|
afptr++;
|
|
}
|
|
|
|
/* Next, exclude symbols starting with ... */
|
|
afptr = autofilter_symbolprefixlist;
|
|
while (afptr->name)
|
|
{
|
|
if (strncmp (n, afptr->name, afptr->len) == 0)
|
|
return 0;
|
|
|
|
afptr++;
|
|
}
|
|
|
|
/* Finally, exclude symbols ending with ... */
|
|
len = strlen (n);
|
|
afptr = autofilter_symbolsuffixlist;
|
|
while (afptr->name)
|
|
{
|
|
if ((len >= afptr->len)
|
|
/* Add 1 to insure match with trailing '\0'. */
|
|
&& strncmp (n + len - afptr->len, afptr->name,
|
|
afptr->len + 1) == 0)
|
|
return 0;
|
|
|
|
afptr++;
|
|
}
|
|
}
|
|
|
|
for (ex = excludes; ex; ex = ex->next)
|
|
{
|
|
if (ex->type == EXCLUDELIBS)
|
|
{
|
|
if (libname
|
|
&& ((filename_cmp (libname, ex->string) == 0)
|
|
|| (strcasecmp ("ALL", ex->string) == 0)))
|
|
return 0;
|
|
}
|
|
else if (ex->type == EXCLUDEFORIMPLIB)
|
|
{
|
|
if (filename_cmp (abfd->filename, ex->string) == 0)
|
|
return 0;
|
|
}
|
|
else if (strcmp (n, ex->string) == 0)
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
process_def_file_and_drectve (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
|
|
{
|
|
int i, j;
|
|
struct bfd_link_hash_entry *blhe;
|
|
bfd *b;
|
|
struct bfd_section *s;
|
|
def_file_export *e = 0;
|
|
bfd_boolean resort_needed;
|
|
|
|
if (!pe_def_file)
|
|
pe_def_file = def_file_empty ();
|
|
|
|
/* First, run around to all the objects looking for the .drectve
|
|
sections, and push those into the def file too. */
|
|
for (b = info->input_bfds; b; b = b->link.next)
|
|
{
|
|
s = bfd_get_section_by_name (b, ".drectve");
|
|
if (s)
|
|
{
|
|
long size = s->size;
|
|
char *buf = xmalloc (size);
|
|
|
|
bfd_get_section_contents (b, s, buf, 0, size);
|
|
def_file_add_directive (pe_def_file, buf, size);
|
|
free (buf);
|
|
}
|
|
}
|
|
|
|
/* Process aligned common symbol information from the
|
|
.drectve sections now; common symbol allocation is
|
|
done before final link, so it will be too late to
|
|
process them in process_embedded_commands() called
|
|
from _bfd_coff_link_input_bfd(). */
|
|
if (pe_def_file->aligncomms)
|
|
{
|
|
def_file_aligncomm *ac = pe_def_file->aligncomms;
|
|
while (ac)
|
|
{
|
|
struct coff_link_hash_entry *sym_hash;
|
|
sym_hash = coff_link_hash_lookup (coff_hash_table (info),
|
|
ac->symbol_name, FALSE, FALSE, FALSE);
|
|
if (sym_hash && sym_hash->root.type == bfd_link_hash_common
|
|
&& sym_hash->root.u.c.p->alignment_power < (unsigned) ac->alignment)
|
|
{
|
|
sym_hash->root.u.c.p->alignment_power = (unsigned) ac->alignment;
|
|
}
|
|
ac = ac->next;
|
|
}
|
|
}
|
|
|
|
/* If we are building an executable and there is nothing
|
|
to export, we do not build an export table at all. */
|
|
if (bfd_link_executable (info) && pe_def_file->num_exports == 0
|
|
&& (!pe_dll_export_everything || pe_dll_exclude_all_symbols))
|
|
return;
|
|
|
|
/* Now, maybe export everything else the default way. */
|
|
if ((pe_dll_export_everything || pe_def_file->num_exports == 0)
|
|
&& !pe_dll_exclude_all_symbols)
|
|
{
|
|
for (b = info->input_bfds; b; b = b->link.next)
|
|
{
|
|
asymbol **symbols;
|
|
int nsyms;
|
|
|
|
if (!bfd_generic_link_read_symbols (b))
|
|
{
|
|
einfo (_("%B%F: could not read symbols: %E\n"), b);
|
|
return;
|
|
}
|
|
|
|
symbols = bfd_get_outsymbols (b);
|
|
nsyms = bfd_get_symcount (b);
|
|
|
|
for (j = 0; j < nsyms; j++)
|
|
{
|
|
/* We should export symbols which are either global or not
|
|
anything at all. (.bss data is the latter)
|
|
We should not export undefined symbols. */
|
|
bfd_boolean would_export
|
|
= (symbols[j]->section != bfd_und_section_ptr
|
|
&& ((symbols[j]->flags & BSF_GLOBAL)
|
|
|| (symbols[j]->flags == 0)));
|
|
if (link_info.version_info && would_export)
|
|
would_export
|
|
= !bfd_hide_sym_by_version (link_info.version_info,
|
|
symbols[j]->name);
|
|
if (would_export)
|
|
{
|
|
const char *sn = symbols[j]->name;
|
|
|
|
/* We should not re-export imported stuff. */
|
|
{
|
|
char *name;
|
|
if (is_import (sn))
|
|
continue;
|
|
|
|
name = xmalloc (strlen ("__imp_") + strlen (sn) + 1);
|
|
sprintf (name, "%s%s", "__imp_", sn);
|
|
|
|
blhe = bfd_link_hash_lookup (info->hash, name,
|
|
FALSE, FALSE, FALSE);
|
|
free (name);
|
|
|
|
if (blhe && blhe->type == bfd_link_hash_defined)
|
|
continue;
|
|
}
|
|
|
|
if (pe_details->underscored && *sn == '_')
|
|
sn++;
|
|
|
|
if (auto_export (b, pe_def_file, sn))
|
|
{
|
|
int is_dup = 0;
|
|
def_file_export *p;
|
|
|
|
p = def_file_add_export (pe_def_file, sn, 0, -1,
|
|
NULL, &is_dup);
|
|
/* Fill data flag properly, from dlltool.c. */
|
|
if (!is_dup)
|
|
p->flag_data = !(symbols[j]->flags & BSF_FUNCTION);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef NE
|
|
#define NE pe_def_file->num_exports
|
|
|
|
/* Don't create an empty export table. */
|
|
if (NE == 0)
|
|
return;
|
|
|
|
resort_needed = FALSE;
|
|
|
|
/* Canonicalize the export list. */
|
|
if (pe_dll_kill_ats)
|
|
{
|
|
for (i = 0; i < NE; i++)
|
|
{
|
|
/* Check for fastcall/stdcall-decoration, but ignore
|
|
C++ mangled names. */
|
|
if (pe_def_file->exports[i].name[0] != '?'
|
|
&& strchr (pe_def_file->exports[i].name, '@'))
|
|
{
|
|
/* This will preserve internal_name, which may have been
|
|
pointing to the same memory as name, or might not
|
|
have. */
|
|
int lead_at = (*pe_def_file->exports[i].name == '@');
|
|
char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
|
|
char *tmp_at = strrchr (tmp, '@');
|
|
|
|
if (tmp_at)
|
|
*tmp_at = 0;
|
|
else
|
|
einfo (_("%XCannot export %s: invalid export name\n"),
|
|
pe_def_file->exports[i].name);
|
|
pe_def_file->exports[i].name = tmp;
|
|
resort_needed = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Re-sort the exports table as we have possibly changed the order
|
|
by removing leading @. */
|
|
if (resort_needed)
|
|
qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]),
|
|
pe_export_sort);
|
|
|
|
if (pe_dll_stdcall_aliases)
|
|
{
|
|
for (i = 0; i < NE; i++)
|
|
{
|
|
if (is_import (pe_def_file->exports[i].name))
|
|
continue;
|
|
|
|
if (strchr (pe_def_file->exports[i].name, '@'))
|
|
{
|
|
int is_dup = 1;
|
|
int lead_at = (*pe_def_file->exports[i].name == '@');
|
|
char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
|
|
|
|
*(strchr (tmp, '@')) = 0;
|
|
if (auto_export (NULL, pe_def_file, tmp))
|
|
def_file_add_export (pe_def_file, tmp,
|
|
pe_def_file->exports[i].internal_name,
|
|
-1, NULL, &is_dup);
|
|
if (is_dup)
|
|
free (tmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Convenience, but watch out for it changing. */
|
|
e = pe_def_file->exports;
|
|
|
|
for (i = 0, j = 0; i < NE; i++)
|
|
{
|
|
if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
|
|
{
|
|
/* This is a duplicate. */
|
|
if (e[j - 1].ordinal != -1
|
|
&& e[i].ordinal != -1
|
|
&& e[j - 1].ordinal != e[i].ordinal)
|
|
{
|
|
if (pe_dll_warn_dup_exports)
|
|
/* xgettext:c-format */
|
|
einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"),
|
|
e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
|
|
}
|
|
else
|
|
{
|
|
if (pe_dll_warn_dup_exports)
|
|
/* xgettext:c-format */
|
|
einfo (_("Warning, duplicate EXPORT: %s\n"),
|
|
e[j - 1].name);
|
|
}
|
|
|
|
if (e[i].ordinal != -1)
|
|
e[j - 1].ordinal = e[i].ordinal;
|
|
e[j - 1].flag_private |= e[i].flag_private;
|
|
e[j - 1].flag_constant |= e[i].flag_constant;
|
|
e[j - 1].flag_noname |= e[i].flag_noname;
|
|
e[j - 1].flag_data |= e[i].flag_data;
|
|
if (e[i].name)
|
|
free (e[i].name);
|
|
if (e[i].internal_name)
|
|
free (e[i].internal_name);
|
|
if (e[i].its_name)
|
|
free (e[i].its_name);
|
|
}
|
|
else
|
|
{
|
|
if (i != j)
|
|
e[j] = e[i];
|
|
j++;
|
|
}
|
|
}
|
|
pe_def_file->num_exports = j; /* == NE */
|
|
|
|
exported_symbol_offsets = xmalloc (NE * sizeof (bfd_vma));
|
|
exported_symbol_sections = xmalloc (NE * sizeof (struct bfd_section *));
|
|
|
|
memset (exported_symbol_sections, 0, NE * sizeof (struct bfd_section *));
|
|
max_ordinal = 0;
|
|
min_ordinal = 65536;
|
|
count_exported = 0;
|
|
count_exported_byname = 0;
|
|
count_with_ordinals = 0;
|
|
|
|
for (i = 0; i < NE; i++)
|
|
{
|
|
char *name;
|
|
name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
|
|
if (pe_details->underscored
|
|
&& (*pe_def_file->exports[i].internal_name != '@'))
|
|
{
|
|
*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
|
|
|| (blhe->type == bfd_link_hash_common)))
|
|
{
|
|
count_exported++;
|
|
if (!pe_def_file->exports[i].flag_noname)
|
|
count_exported_byname++;
|
|
|
|
/* Only fill in the sections. The actual offsets are computed
|
|
in fill_exported_offsets() after common symbols are laid
|
|
out. */
|
|
if (blhe->type == bfd_link_hash_defined)
|
|
exported_symbol_sections[i] = blhe->u.def.section;
|
|
else
|
|
exported_symbol_sections[i] = blhe->u.c.p->section;
|
|
|
|
if (pe_def_file->exports[i].ordinal != -1)
|
|
{
|
|
if (max_ordinal < pe_def_file->exports[i].ordinal)
|
|
max_ordinal = pe_def_file->exports[i].ordinal;
|
|
if (min_ordinal > pe_def_file->exports[i].ordinal)
|
|
min_ordinal = pe_def_file->exports[i].ordinal;
|
|
count_with_ordinals++;
|
|
}
|
|
}
|
|
/* Check for forward exports. These are indicated in DEF files by an
|
|
export directive of the form NAME1 = MODULE-NAME.EXTERNAL-NAME
|
|
but we must take care not to be fooled when the user wants to export
|
|
a symbol that actually really has a dot in it, so we only check
|
|
for them here, after real defined symbols have already been matched. */
|
|
else if (strchr (pe_def_file->exports[i].internal_name, '.'))
|
|
{
|
|
count_exported++;
|
|
if (!pe_def_file->exports[i].flag_noname)
|
|
count_exported_byname++;
|
|
|
|
pe_def_file->exports[i].flag_forward = 1;
|
|
|
|
if (pe_def_file->exports[i].ordinal != -1)
|
|
{
|
|
if (max_ordinal < pe_def_file->exports[i].ordinal)
|
|
max_ordinal = pe_def_file->exports[i].ordinal;
|
|
if (min_ordinal > pe_def_file->exports[i].ordinal)
|
|
min_ordinal = pe_def_file->exports[i].ordinal;
|
|
count_with_ordinals++;
|
|
}
|
|
}
|
|
else if (blhe && blhe->type == bfd_link_hash_undefined)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XCannot export %s: symbol not defined\n"),
|
|
pe_def_file->exports[i].internal_name);
|
|
}
|
|
else if (blhe)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"),
|
|
pe_def_file->exports[i].internal_name,
|
|
blhe->type, bfd_link_hash_defined);
|
|
}
|
|
else
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XCannot export %s: symbol not found\n"),
|
|
pe_def_file->exports[i].internal_name);
|
|
}
|
|
free (name);
|
|
}
|
|
}
|
|
|
|
/* Build the bfd that will contain .edata and .reloc sections. */
|
|
|
|
static void
|
|
build_filler_bfd (int include_edata)
|
|
{
|
|
lang_input_statement_type *filler_file;
|
|
filler_file = lang_add_input_file ("dll stuff",
|
|
lang_input_file_is_fake_enum,
|
|
NULL);
|
|
filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff",
|
|
link_info.output_bfd);
|
|
if (filler_bfd == NULL
|
|
|| !bfd_set_arch_mach (filler_bfd,
|
|
bfd_get_arch (link_info.output_bfd),
|
|
bfd_get_mach (link_info.output_bfd)))
|
|
{
|
|
einfo ("%X%P: can not create BFD: %E\n");
|
|
return;
|
|
}
|
|
|
|
if (include_edata)
|
|
{
|
|
edata_s = bfd_make_section_old_way (filler_bfd, ".edata");
|
|
if (edata_s == NULL
|
|
|| !bfd_set_section_flags (filler_bfd, edata_s,
|
|
(SEC_HAS_CONTENTS
|
|
| SEC_ALLOC
|
|
| SEC_LOAD
|
|
| SEC_KEEP
|
|
| SEC_IN_MEMORY)))
|
|
{
|
|
einfo ("%X%P: can not create .edata section: %E\n");
|
|
return;
|
|
}
|
|
bfd_set_section_size (filler_bfd, edata_s, edata_sz);
|
|
}
|
|
|
|
reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc");
|
|
if (reloc_s == NULL
|
|
|| !bfd_set_section_flags (filler_bfd, reloc_s,
|
|
(SEC_HAS_CONTENTS
|
|
| SEC_ALLOC
|
|
| SEC_LOAD
|
|
| SEC_KEEP
|
|
| SEC_IN_MEMORY)))
|
|
{
|
|
einfo ("%X%P: can not create .reloc section: %E\n");
|
|
return;
|
|
}
|
|
|
|
bfd_set_section_size (filler_bfd, reloc_s, 0);
|
|
|
|
ldlang_add_file (filler_file);
|
|
}
|
|
|
|
/* Gather all the exported symbols and build the .edata section. */
|
|
|
|
static void
|
|
generate_edata (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 = 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] ||
|
|
pe_def_file->exports[i].flag_forward)
|
|
{
|
|
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, ordinal 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;
|
|
}
|
|
if (pe_def_file->exports[i].its_name)
|
|
name_table_size += strlen (pe_def_file->exports[i].its_name) + 1;
|
|
else
|
|
name_table_size += strlen (pe_def_file->exports[i].name) + 1;
|
|
}
|
|
|
|
/* Reserve space for the forward name. */
|
|
if (pe_def_file->exports[i].flag_forward)
|
|
{
|
|
name_table_size += strlen (pe_def_file->exports[i].internal_name) + 1;
|
|
}
|
|
}
|
|
|
|
next_ordinal = min_ordinal;
|
|
for (i = 0; i < NE; i++)
|
|
if ((exported_symbol_sections[i] ||
|
|
pe_def_file->exports[i].flag_forward) &&
|
|
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_and_drectve(). */
|
|
|
|
static void
|
|
fill_exported_offsets (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;
|
|
|
|
name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
|
|
if (pe_details->underscored
|
|
&& *pe_def_file->exports[i].internal_name != '@')
|
|
{
|
|
*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 (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
|
{
|
|
int s, hint;
|
|
unsigned char *edirectory;
|
|
unsigned char *eaddresses;
|
|
unsigned char *enameptrs;
|
|
unsigned char *eordinals;
|
|
char *enamestr;
|
|
|
|
edata_d = xmalloc (edata_sz);
|
|
|
|
/* Note use of array pointer math here. */
|
|
edirectory = edata_d;
|
|
eaddresses = edirectory + 40;
|
|
enameptrs = eaddresses + 4 * export_table_size;
|
|
eordinals = enameptrs + 4 * count_exported_byname;
|
|
enamestr = (char *) eordinals + 2 * count_exported_byname;
|
|
|
|
#define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \
|
|
+ edata_s->output_section->vma - image_base)
|
|
|
|
memset (edata_d, 0, edata_sz);
|
|
|
|
if (pe_data (abfd)->insert_timestamp)
|
|
H_PUT_32 (abfd, time (0), 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.
|
|
Scan alphabetically - ie the ordering in the exports[] table,
|
|
rather than by ordinal - the ordering in the exported_symbol[]
|
|
table. See dlltool.c and:
|
|
http://sources.redhat.com/ml/binutils/2003-04/msg00379.html
|
|
for more information. */
|
|
hint = 0;
|
|
for (s = 0; s < NE; s++)
|
|
{
|
|
struct bfd_section *ssec = exported_symbol_sections[s];
|
|
if (pe_def_file->exports[s].ordinal != -1 &&
|
|
(pe_def_file->exports[s].flag_forward || ssec != NULL))
|
|
{
|
|
int ord = pe_def_file->exports[s].ordinal;
|
|
|
|
if (pe_def_file->exports[s].flag_forward)
|
|
{
|
|
bfd_put_32 (abfd, ERVA (enamestr),
|
|
eaddresses + 4 * (ord - min_ordinal));
|
|
|
|
strcpy (enamestr, pe_def_file->exports[s].internal_name);
|
|
enamestr += strlen (pe_def_file->exports[s].internal_name) + 1;
|
|
}
|
|
else
|
|
{
|
|
bfd_vma srva = (exported_symbol_offsets[s]
|
|
+ ssec->output_section->vma
|
|
+ ssec->output_offset);
|
|
|
|
bfd_put_32 (abfd, srva - image_base,
|
|
eaddresses + 4 * (ord - min_ordinal));
|
|
}
|
|
|
|
if (!pe_def_file->exports[s].flag_noname)
|
|
{
|
|
char *ename = pe_def_file->exports[s].name;
|
|
if (pe_def_file->exports[s].its_name)
|
|
ename = pe_def_file->exports[s].its_name;
|
|
|
|
bfd_put_32 (abfd, ERVA (enamestr), enameptrs);
|
|
enameptrs += 4;
|
|
strcpy (enamestr, ename);
|
|
enamestr += strlen (enamestr) + 1;
|
|
bfd_put_16 (abfd, ord - min_ordinal, eordinals);
|
|
eordinals += 2;
|
|
pe_def_file->exports[s].hint = hint++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static struct bfd_section *current_sec;
|
|
|
|
void
|
|
pe_walk_relocs_of_symbol (struct bfd_link_info *info,
|
|
const char *name,
|
|
int (*cb) (arelent *, asection *))
|
|
{
|
|
bfd *b;
|
|
asection *s;
|
|
|
|
for (b = info->input_bfds; b; b = b->link.next)
|
|
{
|
|
asymbol **symbols;
|
|
|
|
if (!bfd_generic_link_read_symbols (b))
|
|
{
|
|
einfo (_("%B%F: could not read symbols: %E\n"), b);
|
|
return;
|
|
}
|
|
|
|
symbols = bfd_get_outsymbols (b);
|
|
|
|
for (s = b->sections; s; s = s->next)
|
|
{
|
|
arelent **relocs;
|
|
int relsize, nrelocs, i;
|
|
int flags = bfd_get_section_flags (b, s);
|
|
|
|
/* Skip discarded linkonce sections. */
|
|
if (flags & SEC_LINK_ONCE
|
|
&& s->output_section == bfd_abs_section_ptr)
|
|
continue;
|
|
|
|
current_sec = s;
|
|
|
|
relsize = bfd_get_reloc_upper_bound (b, s);
|
|
relocs = xmalloc (relsize);
|
|
nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
|
|
|
|
for (i = 0; i < nrelocs; i++)
|
|
{
|
|
struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
|
|
|
|
if (!strcmp (name, sym->name))
|
|
cb (relocs[i], s);
|
|
}
|
|
|
|
free (relocs);
|
|
|
|
/* Warning: the allocated symbols are remembered in BFD and reused
|
|
later, so don't free them! */
|
|
/* free (symbols); */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Gather all the relocations and build the .reloc section. */
|
|
|
|
static void
|
|
generate_reloc (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
|
|
/* For .reloc stuff. */
|
|
reloc_data_type *reloc_data;
|
|
int total_relocs = 0;
|
|
int i;
|
|
bfd_vma sec_page = (bfd_vma) -1;
|
|
bfd_vma page_ptr, page_count;
|
|
int bi;
|
|
bfd *b;
|
|
struct bfd_section *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 = 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;
|
|
|
|
for (s = b->sections; s; s = s->next)
|
|
{
|
|
bfd_vma sec_vma = s->output_section->vma + s->output_offset;
|
|
asymbol **symbols;
|
|
|
|
/* 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_ptr)
|
|
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;
|
|
}
|
|
|
|
if (!bfd_generic_link_read_symbols (b))
|
|
{
|
|
einfo (_("%B%F: could not read symbols: %E\n"), b);
|
|
return;
|
|
}
|
|
|
|
symbols = bfd_get_outsymbols (b);
|
|
relsize = bfd_get_reloc_upper_bound (b, s);
|
|
relocs = xmalloc (relsize);
|
|
nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
|
|
|
|
for (i = 0; i < nrelocs; i++)
|
|
{
|
|
if (pe_dll_extra_pe_debug)
|
|
{
|
|
struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
|
|
printf ("rel: %s\n", sym->name);
|
|
}
|
|
if (!relocs[i]->howto->pc_relative
|
|
&& relocs[i]->howto->type != pe_details->imagebase_reloc)
|
|
{
|
|
struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
|
|
|
|
/* Don't create relocs for undefined weak symbols. */
|
|
if (sym->flags == BSF_WEAK)
|
|
{
|
|
struct bfd_link_hash_entry *blhe
|
|
= bfd_wrapped_link_hash_lookup (abfd, info, sym->name,
|
|
FALSE, FALSE, FALSE);
|
|
if (blhe && blhe->type == bfd_link_hash_undefweak)
|
|
{
|
|
/* Check aux sym and see if it is defined or not. */
|
|
struct coff_link_hash_entry *h, *h2;
|
|
h = (struct coff_link_hash_entry *)blhe;
|
|
if (h->symbol_class != C_NT_WEAK || h->numaux != 1)
|
|
continue;
|
|
h2 = h->auxbfd->tdata.coff_obj_data->sym_hashes
|
|
[h->aux->x_sym.x_tagndx.l];
|
|
/* We don't want a base reloc if the aux sym is not
|
|
found, undefined, or if it is the constant ABS
|
|
zero default value. (We broaden that slightly by
|
|
not testing the value, just the section; there's
|
|
no reason we'd want a reference to any absolute
|
|
address to get relocated during rebasing). */
|
|
if (!h2 || h2->root.type == bfd_link_hash_undefined
|
|
|| h2->root.u.def.section == bfd_abs_section_ptr)
|
|
continue;
|
|
}
|
|
else if (!blhe || blhe->type != bfd_link_hash_defined)
|
|
continue;
|
|
}
|
|
/* Nor for Dwarf FDE references to discarded sections. */
|
|
else if (bfd_is_abs_section (sym->section->output_section))
|
|
{
|
|
/* We only ignore relocs from .eh_frame sections, as
|
|
they are discarded by the final link rather than
|
|
resolved against the kept section. */
|
|
if (!strcmp (s->name, ".eh_frame"))
|
|
continue;
|
|
}
|
|
|
|
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)
|
|
{
|
|
#ifdef pe_use_x86_64
|
|
case BITS_AND_SHIFT (64, 0):
|
|
reloc_data[total_relocs].type = 10;
|
|
total_relocs++;
|
|
break;
|
|
#endif
|
|
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;
|
|
case BITS_AND_SHIFT (24, 2):
|
|
/* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c
|
|
Those ARM_xxx definitions should go in proper
|
|
header someday. */
|
|
if (relocs[i]->howto->type == 0
|
|
/* Older GNU linkers used 5 instead of 0 for this reloc. */
|
|
|| relocs[i]->howto->type == 5)
|
|
/* This is an ARM_26D reloc, which is an ARM_26 reloc
|
|
that has already been fully processed during a
|
|
previous link stage, so ignore it here. */
|
|
break;
|
|
/* Fall through. */
|
|
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! */
|
|
}
|
|
}
|
|
|
|
/* 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++)
|
|
{
|
|
bfd_vma 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 = xmalloc (reloc_sz);
|
|
sec_page = (bfd_vma) -1;
|
|
reloc_sz = 0;
|
|
page_ptr = (bfd_vma) -1;
|
|
page_count = 0;
|
|
|
|
for (i = 0; i < total_relocs; i++)
|
|
{
|
|
bfd_vma rva = reloc_data[i].vma - image_base;
|
|
bfd_vma this_page = (rva & ~0xfff);
|
|
|
|
if (this_page != sec_page)
|
|
{
|
|
while (reloc_sz & 3)
|
|
reloc_d[reloc_sz++] = 0;
|
|
|
|
if (page_ptr != (bfd_vma) -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 != (bfd_vma) -1)
|
|
bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
|
|
|
|
while (reloc_sz < reloc_s->size)
|
|
reloc_d[reloc_sz++] = 0;
|
|
}
|
|
|
|
/* Given the exiting def_file structure, print out a .DEF file that
|
|
corresponds to it. */
|
|
|
|
static void
|
|
quoteput (char *s, FILE *f, int needs_quotes)
|
|
{
|
|
char *cp;
|
|
|
|
for (cp = s; *cp; cp++)
|
|
if (*cp == '\''
|
|
|| *cp == '"'
|
|
|| *cp == '\\'
|
|
|| ISSPACE (*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 (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 (link_info.output_bfd)->pe_opthdr.ImageBase)
|
|
{
|
|
fprintf (out, " BASE=0x");
|
|
fprintf_vma (out, ((bfd_vma) pe_data (link_info.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, "EXPORTS\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);
|
|
|
|
if (im->its_name)
|
|
{
|
|
fprintf (out, " == ");
|
|
quoteput (im->its_name, out, 0);
|
|
}
|
|
|
|
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 int tmp_seq2;
|
|
static const char *dll_filename;
|
|
static char *dll_symname;
|
|
|
|
#define UNDSEC bfd_und_section_ptr
|
|
|
|
static asection *
|
|
quick_section (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 (bfd *abfd,
|
|
const char *n1,
|
|
const char *n2,
|
|
const char *n3,
|
|
asection *sec,
|
|
int flags,
|
|
int addr)
|
|
{
|
|
asymbol *sym;
|
|
char *name = 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 (bfd *abfd, bfd_size_type address, int which_howto, int symidx)
|
|
{
|
|
if (relcount >= relsize - 1)
|
|
{
|
|
relsize += 10;
|
|
if (reltab)
|
|
reltab = xrealloc (reltab, relsize * sizeof (arelent));
|
|
else
|
|
reltab = 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 = 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 (bfd *parent)
|
|
{
|
|
asection *id2, *id5, *id4;
|
|
unsigned char *d2, *d5, *d4;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = 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 = 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 = xmalloc (20);
|
|
id2->contents = d2;
|
|
memset (d2, 0, 20);
|
|
if (pe_use_nul_prefixed_import_tables)
|
|
d2[0] = d2[16] = PE_IDATA5_SIZE; /* 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);
|
|
|
|
if (pe_use_nul_prefixed_import_tables)
|
|
bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
|
|
else
|
|
bfd_set_section_size (abfd, id5, 0);
|
|
d5 = xmalloc (PE_IDATA5_SIZE);
|
|
id5->contents = d5;
|
|
memset (d5, 0, PE_IDATA5_SIZE);
|
|
if (pe_use_nul_prefixed_import_tables)
|
|
bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE);
|
|
else
|
|
bfd_set_section_size (abfd, id4, 0);
|
|
d4 = xmalloc (PE_IDATA4_SIZE);
|
|
id4->contents = d4;
|
|
memset (d4, 0, PE_IDATA4_SIZE);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id2, d2, 0, 20);
|
|
if (pe_use_nul_prefixed_import_tables)
|
|
{
|
|
bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA5_SIZE);
|
|
bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
|
|
}
|
|
else
|
|
{
|
|
bfd_set_section_contents (abfd, id5, d5, 0, 0);
|
|
bfd_set_section_contents (abfd, id4, d4, 0, 0);
|
|
}
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
/* .section .idata$4
|
|
.long 0
|
|
[.long 0] for PE+
|
|
.section .idata$5
|
|
.long 0
|
|
[.long 0] for PE+
|
|
.section idata$7
|
|
.global __my_dll_iname
|
|
__my_dll_iname:
|
|
.asciz "my.dll" */
|
|
|
|
static bfd *
|
|
make_tail (bfd *parent)
|
|
{
|
|
asection *id4, *id5, *id7;
|
|
unsigned char *d4, *d5, *d7;
|
|
int len;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = 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 = 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, PE_IDATA4_SIZE);
|
|
d4 = xmalloc (PE_IDATA4_SIZE);
|
|
id4->contents = d4;
|
|
memset (d4, 0, PE_IDATA4_SIZE);
|
|
|
|
bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
|
|
d5 = xmalloc (PE_IDATA5_SIZE);
|
|
id5->contents = d5;
|
|
memset (d5, 0, PE_IDATA5_SIZE);
|
|
|
|
len = strlen (dll_filename) + 1;
|
|
if (len & 1)
|
|
len++;
|
|
bfd_set_section_size (abfd, id7, len);
|
|
d7 = xmalloc (len);
|
|
id7->contents = d7;
|
|
strcpy ((char *) d7, dll_filename);
|
|
/* If len was odd, the above
|
|
strcpy leaves behind an undefined byte. That is harmless,
|
|
but we set it to 0 just so the binary dumps are pretty. */
|
|
d7[len - 1] = 0;
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
|
|
bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA5_SIZE);
|
|
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 const 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 const 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 const unsigned char jmp_mips_bytes[] =
|
|
{
|
|
0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
|
|
0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
static const unsigned char jmp_arm_bytes[] =
|
|
{
|
|
0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */
|
|
0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */
|
|
0, 0, 0, 0
|
|
};
|
|
|
|
|
|
static bfd *
|
|
make_one (def_file_export *exp, bfd *parent, bfd_boolean include_jmp_stub)
|
|
{
|
|
asection *tx, *id7, *id5, *id4, *id6;
|
|
unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL;
|
|
int len;
|
|
char *oname;
|
|
bfd *abfd;
|
|
const unsigned char *jmp_bytes = NULL;
|
|
int jmp_byte_count = 0;
|
|
|
|
/* Include the jump stub section only if it is needed. A jump
|
|
stub is needed if the symbol being imported <sym> is a function
|
|
symbol and there is at least one undefined reference to that
|
|
symbol. In other words, if all the import references to <sym> are
|
|
explicitly through _declspec(dllimport) then the jump stub is not
|
|
needed. */
|
|
if (include_jmp_stub)
|
|
{
|
|
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;
|
|
case PE_ARCH_arm:
|
|
case PE_ARCH_arm_epoc:
|
|
case PE_ARCH_arm_wince:
|
|
jmp_bytes = jmp_arm_bytes;
|
|
jmp_byte_count = sizeof (jmp_arm_bytes);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
oname = 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 = xmalloc (12 * sizeof (asymbol *));
|
|
|
|
tx = quick_section (abfd, ".text", SEC_CODE | SEC_HAS_CONTENTS | SEC_READONLY, 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->internal_name == '@')
|
|
{
|
|
quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
|
|
BSF_GLOBAL, 0);
|
|
if (include_jmp_stub)
|
|
quick_symbol (abfd, "", exp->internal_name, "", tx, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, "__imp_", exp->internal_name, "", id5,
|
|
BSF_GLOBAL, 0);
|
|
/* Fastcall applies only to functions,
|
|
so no need for auto-import symbol. */
|
|
}
|
|
else
|
|
{
|
|
quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
|
|
BSF_GLOBAL, 0);
|
|
if (include_jmp_stub)
|
|
quick_symbol (abfd, U (""), exp->internal_name, "", tx,
|
|
BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, "__imp_", U (""), exp->internal_name, id5,
|
|
BSF_GLOBAL, 0);
|
|
/* Symbol to reference ord/name of imported
|
|
data symbol, used to implement auto-import. */
|
|
if (exp->flag_data)
|
|
quick_symbol (abfd, "__nm_", U (""), exp->internal_name, id6,
|
|
BSF_GLOBAL,0);
|
|
}
|
|
if (pe_dll_compat_implib)
|
|
quick_symbol (abfd, "___imp_", exp->internal_name, "", id5,
|
|
BSF_GLOBAL, 0);
|
|
|
|
if (include_jmp_stub)
|
|
{
|
|
bfd_set_section_size (abfd, tx, jmp_byte_count);
|
|
td = xmalloc (jmp_byte_count);
|
|
tx->contents = td;
|
|
memcpy (td, jmp_bytes, jmp_byte_count);
|
|
|
|
switch (pe_details->pe_arch)
|
|
{
|
|
case PE_ARCH_i386:
|
|
#ifdef pe_use_x86_64
|
|
quick_reloc (abfd, 2, BFD_RELOC_32_PCREL, 2);
|
|
#else
|
|
/* Mark this object as SAFESEH compatible. */
|
|
quick_symbol (abfd, "", "@feat.00", "", bfd_abs_section_ptr,
|
|
BSF_LOCAL, 1);
|
|
quick_reloc (abfd, 2, BFD_RELOC_32, 2);
|
|
#endif
|
|
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;
|
|
case PE_ARCH_arm:
|
|
case PE_ARCH_arm_epoc:
|
|
case PE_ARCH_arm_wince:
|
|
quick_reloc (abfd, 8, BFD_RELOC_32, 2);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
save_relocs (tx);
|
|
}
|
|
else
|
|
bfd_set_section_size (abfd, tx, 0);
|
|
|
|
bfd_set_section_size (abfd, id7, 4);
|
|
d7 = xmalloc (4);
|
|
id7->contents = d7;
|
|
memset (d7, 0, 4);
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 5);
|
|
save_relocs (id7);
|
|
|
|
bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
|
|
d5 = xmalloc (PE_IDATA5_SIZE);
|
|
id5->contents = d5;
|
|
memset (d5, 0, PE_IDATA5_SIZE);
|
|
|
|
if (exp->flag_noname)
|
|
{
|
|
d5[0] = exp->ordinal;
|
|
d5[1] = exp->ordinal >> 8;
|
|
d5[PE_IDATA5_SIZE - 1] = 0x80;
|
|
}
|
|
else
|
|
{
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
|
|
save_relocs (id5);
|
|
}
|
|
|
|
bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE);
|
|
d4 = xmalloc (PE_IDATA4_SIZE);
|
|
id4->contents = d4;
|
|
memset (d4, 0, PE_IDATA4_SIZE);
|
|
|
|
if (exp->flag_noname)
|
|
{
|
|
d4[0] = exp->ordinal;
|
|
d4[1] = exp->ordinal >> 8;
|
|
d4[PE_IDATA4_SIZE - 1] = 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
|
|
{
|
|
/* { short, asciz } */
|
|
if (exp->its_name)
|
|
len = 2 + strlen (exp->its_name) + 1;
|
|
else
|
|
len = 2 + strlen (exp->name) + 1;
|
|
if (len & 1)
|
|
len++;
|
|
bfd_set_section_size (abfd, id6, len);
|
|
d6 = xmalloc (len);
|
|
id6->contents = d6;
|
|
memset (d6, 0, len);
|
|
d6[0] = exp->hint & 0xff;
|
|
d6[1] = exp->hint >> 8;
|
|
if (exp->its_name)
|
|
strcpy ((char*) d6 + 2, exp->its_name);
|
|
else
|
|
strcpy ((char *) d6 + 2, exp->name);
|
|
}
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
if (include_jmp_stub)
|
|
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, PE_IDATA5_SIZE);
|
|
bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
|
|
if (!exp->flag_noname)
|
|
bfd_set_section_contents (abfd, id6, d6, 0, len);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
static bfd *
|
|
make_singleton_name_imp (const char *import, bfd *parent)
|
|
{
|
|
/* Name thunks go to idata$4. */
|
|
asection *id5;
|
|
unsigned char *d5;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = xmalloc (20);
|
|
sprintf (oname, "nmimp%06d.o", tmp_seq2);
|
|
tmp_seq2++;
|
|
|
|
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 = xmalloc (3 * sizeof (asymbol *));
|
|
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
|
|
quick_symbol (abfd, "__imp_", import, "", id5, BSF_GLOBAL, 0);
|
|
|
|
/* We need space for the real thunk and for the null terminator. */
|
|
bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE * 2);
|
|
d5 = xmalloc (PE_IDATA5_SIZE * 2);
|
|
id5->contents = d5;
|
|
memset (d5, 0, PE_IDATA5_SIZE * 2);
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
|
|
save_relocs (id5);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA4_SIZE * 2);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
static bfd *
|
|
make_singleton_name_thunk (const char *import, bfd *parent)
|
|
{
|
|
/* Name thunks go to idata$4. */
|
|
asection *id4;
|
|
unsigned char *d4;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = xmalloc (20);
|
|
sprintf (oname, "nmth%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 = xmalloc (3 * sizeof (asymbol *));
|
|
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
|
|
quick_symbol (abfd, "__nm_thnk_", import, "", id4, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, "__nm_", import, "", UNDSEC, BSF_GLOBAL, 0);
|
|
|
|
/* We need space for the real thunk and for the null terminator. */
|
|
bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE * 2);
|
|
d4 = xmalloc (PE_IDATA4_SIZE * 2);
|
|
id4->contents = d4;
|
|
memset (d4, 0, PE_IDATA4_SIZE * 2);
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
|
|
save_relocs (id4);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE * 2);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
static char *
|
|
make_import_fixup_mark (arelent *rel)
|
|
{
|
|
/* We convert reloc to symbol, for later reference. */
|
|
static int counter;
|
|
static char *fixup_name = NULL;
|
|
static size_t buffer_len = 0;
|
|
|
|
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
|
|
|
bfd *abfd = bfd_asymbol_bfd (sym);
|
|
struct bfd_link_hash_entry *bh;
|
|
|
|
if (!fixup_name)
|
|
{
|
|
fixup_name = xmalloc (384);
|
|
buffer_len = 384;
|
|
}
|
|
|
|
if (strlen (sym->name) + 25 > buffer_len)
|
|
/* Assume 25 chars for "__fu" + counter + "_". If counter is
|
|
bigger than 20 digits long, we've got worse problems than
|
|
overflowing this buffer... */
|
|
{
|
|
free (fixup_name);
|
|
/* New buffer size is length of symbol, plus 25, but
|
|
then rounded up to the nearest multiple of 128. */
|
|
buffer_len = ((strlen (sym->name) + 25) + 127) & ~127;
|
|
fixup_name = xmalloc (buffer_len);
|
|
}
|
|
|
|
sprintf (fixup_name, "__fu%d_%s", counter++, sym->name);
|
|
|
|
bh = NULL;
|
|
bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL,
|
|
current_sec, /* sym->section, */
|
|
rel->address, NULL, TRUE, FALSE, &bh);
|
|
|
|
return fixup_name;
|
|
}
|
|
|
|
/* .section .idata$2
|
|
.rva __nm_thnk_SYM (singleton thunk with name of func)
|
|
.long 0
|
|
.long 0
|
|
.rva __my_dll_iname (name of dll)
|
|
.rva __fuNN_SYM (pointer to reference (address) in text) */
|
|
|
|
static bfd *
|
|
make_import_fixup_entry (const char *name,
|
|
const char *fixup_name,
|
|
const char *symname,
|
|
bfd *parent)
|
|
{
|
|
asection *id2;
|
|
unsigned char *d2;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = xmalloc (20);
|
|
sprintf (oname, "fu%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 = xmalloc (6 * sizeof (asymbol *));
|
|
id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2);
|
|
|
|
quick_symbol (abfd, "__nm_thnk_", name, "", UNDSEC, BSF_GLOBAL, 0);
|
|
quick_symbol (abfd, U (""), symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
|
|
/* For relocator v2 we have to use the .idata$5 element and not
|
|
fixup_name. */
|
|
if (link_info.pei386_runtime_pseudo_reloc == 2)
|
|
quick_symbol (abfd, "__imp_", name, "", UNDSEC, BSF_GLOBAL, 0);
|
|
else
|
|
quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
|
|
|
|
bfd_set_section_size (abfd, id2, 20);
|
|
d2 = xmalloc (20);
|
|
id2->contents = d2;
|
|
memset (d2, 0, 20);
|
|
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
|
|
quick_reloc (abfd, 12, BFD_RELOC_RVA, 2);
|
|
quick_reloc (abfd, 16, BFD_RELOC_RVA, 3);
|
|
save_relocs (id2);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, id2, d2, 0, 20);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
/* .section .rdata_runtime_pseudo_reloc
|
|
.long addend
|
|
.rva __fuNN_SYM (pointer to reference (address) in text) */
|
|
|
|
static bfd *
|
|
make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED,
|
|
const char *fixup_name,
|
|
bfd_vma addend ATTRIBUTE_UNUSED,
|
|
bfd_vma bitsize,
|
|
bfd *parent)
|
|
{
|
|
asection *rt_rel;
|
|
unsigned char *rt_rel_d;
|
|
char *oname;
|
|
bfd *abfd;
|
|
oname = xmalloc (20);
|
|
sprintf (oname, "rtr%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;
|
|
if (link_info.pei386_runtime_pseudo_reloc == 2)
|
|
{
|
|
symtab = xmalloc ((runtime_pseudp_reloc_v2_init ? 3 : 6) * sizeof (asymbol *));
|
|
}
|
|
else
|
|
{
|
|
symtab = xmalloc (2 * sizeof (asymbol *));
|
|
}
|
|
rt_rel = quick_section (abfd, ".rdata_runtime_pseudo_reloc",
|
|
SEC_HAS_CONTENTS, 2);
|
|
|
|
quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
|
|
|
|
if (link_info.pei386_runtime_pseudo_reloc == 2)
|
|
{
|
|
size_t size = 12;
|
|
if (! runtime_pseudp_reloc_v2_init)
|
|
{
|
|
size += 12;
|
|
runtime_pseudp_reloc_v2_init = 1;
|
|
}
|
|
quick_symbol (abfd, "__imp_", name, "", UNDSEC, BSF_GLOBAL, 0);
|
|
|
|
bfd_set_section_size (abfd, rt_rel, size);
|
|
rt_rel_d = xmalloc (size);
|
|
rt_rel->contents = rt_rel_d;
|
|
memset (rt_rel_d, 0, size);
|
|
quick_reloc (abfd, size - 8, BFD_RELOC_RVA, 1);
|
|
quick_reloc (abfd, size - 12, BFD_RELOC_RVA, 2);
|
|
bfd_put_32 (abfd, bitsize, rt_rel_d + (size - 4));
|
|
if (size != 12)
|
|
bfd_put_32 (abfd, 1, rt_rel_d + 8);
|
|
save_relocs (rt_rel);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, size);
|
|
}
|
|
else
|
|
{
|
|
bfd_set_section_size (abfd, rt_rel, 8);
|
|
rt_rel_d = xmalloc (8);
|
|
rt_rel->contents = rt_rel_d;
|
|
memset (rt_rel_d, 0, 8);
|
|
|
|
bfd_put_32 (abfd, addend, rt_rel_d);
|
|
quick_reloc (abfd, 4, BFD_RELOC_RVA, 1);
|
|
|
|
save_relocs (rt_rel);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, 8);
|
|
}
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
/* .section .rdata
|
|
.rva __pei386_runtime_relocator */
|
|
|
|
static bfd *
|
|
pe_create_runtime_relocator_reference (bfd *parent)
|
|
{
|
|
asection *extern_rt_rel;
|
|
unsigned char *extern_rt_rel_d;
|
|
char *oname;
|
|
bfd *abfd;
|
|
|
|
oname = xmalloc (20);
|
|
sprintf (oname, "ertr%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 = xmalloc (2 * sizeof (asymbol *));
|
|
extern_rt_rel = quick_section (abfd, ".rdata", SEC_HAS_CONTENTS, 2);
|
|
|
|
quick_symbol (abfd, "", U ("_pei386_runtime_relocator"), "", UNDSEC,
|
|
BSF_NO_FLAGS, 0);
|
|
|
|
bfd_set_section_size (abfd, extern_rt_rel, PE_IDATA5_SIZE);
|
|
extern_rt_rel_d = xcalloc (1, PE_IDATA5_SIZE);
|
|
extern_rt_rel->contents = extern_rt_rel_d;
|
|
|
|
quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
|
|
save_relocs (extern_rt_rel);
|
|
|
|
bfd_set_symtab (abfd, symtab, symptr);
|
|
|
|
bfd_set_section_contents (abfd, extern_rt_rel, extern_rt_rel_d, 0, PE_IDATA5_SIZE);
|
|
|
|
bfd_make_readable (abfd);
|
|
return abfd;
|
|
}
|
|
|
|
void
|
|
pe_create_import_fixup (arelent *rel, asection *s, bfd_vma addend)
|
|
{
|
|
char buf[300];
|
|
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
|
struct bfd_link_hash_entry *name_thunk_sym;
|
|
struct bfd_link_hash_entry *name_imp_sym;
|
|
const char *name = sym->name;
|
|
char *fixup_name = make_import_fixup_mark (rel);
|
|
bfd *b;
|
|
int need_import_table = 1;
|
|
|
|
sprintf (buf, "__imp_%s", name);
|
|
name_imp_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
|
|
|
|
sprintf (buf, "__nm_thnk_%s", name);
|
|
|
|
name_thunk_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
|
|
|
|
/* For version 2 pseudo relocation we don't need to add an import
|
|
if the import symbol is already present. */
|
|
if (link_info.pei386_runtime_pseudo_reloc == 2
|
|
&& name_imp_sym
|
|
&& name_imp_sym->type == bfd_link_hash_defined)
|
|
need_import_table = 0;
|
|
|
|
if (need_import_table == 1
|
|
&& (!name_thunk_sym || name_thunk_sym->type != bfd_link_hash_defined))
|
|
{
|
|
b = make_singleton_name_thunk (name, link_info.output_bfd);
|
|
add_bfd_to_link (b, b->filename, &link_info);
|
|
|
|
/* If we ever use autoimport, we have to cast text section writable.
|
|
But not for version 2. */
|
|
if (link_info.pei386_runtime_pseudo_reloc != 2)
|
|
{
|
|
config.text_read_only = FALSE;
|
|
link_info.output_bfd->flags &= ~WP_TEXT;
|
|
}
|
|
if (link_info.pei386_runtime_pseudo_reloc == 2)
|
|
{
|
|
b = make_singleton_name_imp (name, link_info.output_bfd);
|
|
add_bfd_to_link (b, b->filename, &link_info);
|
|
}
|
|
}
|
|
|
|
if ((addend == 0 || link_info.pei386_runtime_pseudo_reloc)
|
|
&& need_import_table == 1)
|
|
{
|
|
extern char * pe_data_import_dll;
|
|
char * symname = pe_data_import_dll ? pe_data_import_dll : "unknown";
|
|
|
|
b = make_import_fixup_entry (name, fixup_name, symname,
|
|
link_info.output_bfd);
|
|
add_bfd_to_link (b, b->filename, &link_info);
|
|
}
|
|
|
|
if ((link_info.pei386_runtime_pseudo_reloc != 0 && addend != 0)
|
|
|| link_info.pei386_runtime_pseudo_reloc == 2)
|
|
{
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n",
|
|
fixup_name, (int) addend);
|
|
|
|
b = make_runtime_pseudo_reloc (name, fixup_name, addend, rel->howto->bitsize,
|
|
link_info.output_bfd);
|
|
add_bfd_to_link (b, b->filename, &link_info);
|
|
|
|
if (runtime_pseudo_relocs_created == 0)
|
|
{
|
|
b = pe_create_runtime_relocator_reference (link_info.output_bfd);
|
|
add_bfd_to_link (b, b->filename, &link_info);
|
|
}
|
|
runtime_pseudo_relocs_created++;
|
|
}
|
|
else if (addend != 0)
|
|
{
|
|
einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
|
|
s->owner, s, rel->address, sym->name);
|
|
einfo ("%X");
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
pe_dll_generate_implib (def_file *def, const char *impfilename, struct bfd_link_info *info)
|
|
{
|
|
int i;
|
|
bfd *ar_head;
|
|
bfd *ar_tail;
|
|
bfd *outarch;
|
|
bfd *ibfd;
|
|
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 (dll_symname[i]))
|
|
dll_symname[i] = '_';
|
|
|
|
unlink_if_ordinary (impfilename);
|
|
|
|
outarch = bfd_openw (impfilename, 0);
|
|
|
|
if (!outarch)
|
|
{
|
|
/* xgettext:c-format */
|
|
einfo (_("%XCan't open .lib file: %s\n"), impfilename);
|
|
return;
|
|
}
|
|
|
|
if (verbose)
|
|
/* xgettext:c-format */
|
|
info_msg (_("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);
|
|
|
|
/* Iterate the input BFDs, looking for exclude-modules-for-implib. */
|
|
for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
|
|
{
|
|
/* Iterate the exclude list. */
|
|
struct exclude_list_struct *ex;
|
|
char found;
|
|
for (ex = excludes, found = 0; ex && !found; ex = ex->next)
|
|
{
|
|
if (ex->type != EXCLUDEFORIMPLIB)
|
|
continue;
|
|
found = (filename_cmp (ex->string, ibfd->filename) == 0);
|
|
}
|
|
/* If it matched, we must open a fresh BFD for it (the original
|
|
input BFD is still needed for the DLL's final link) and add
|
|
it into the archive member chain. */
|
|
if (found)
|
|
{
|
|
bfd *newbfd = bfd_openr (ibfd->my_archive
|
|
? ibfd->my_archive->filename : ibfd->filename, NULL);
|
|
if (!newbfd)
|
|
{
|
|
einfo (_("%Xbfd_openr %s: %E\n"), ibfd->filename);
|
|
return;
|
|
}
|
|
if (ibfd->my_archive)
|
|
{
|
|
/* Must now iterate through archive until we find the
|
|
required member. A minor shame that we'll open the
|
|
archive once per member that we require from it, and
|
|
leak those archive bfds rather than reuse them. */
|
|
bfd *arbfd = newbfd;
|
|
if (!bfd_check_format_matches (arbfd, bfd_archive, NULL))
|
|
{
|
|
einfo (_("%X%s(%s): can't find member in non-archive file"),
|
|
ibfd->my_archive->filename, ibfd->filename);
|
|
return;
|
|
}
|
|
newbfd = NULL;
|
|
while ((newbfd = bfd_openr_next_archived_file (arbfd, newbfd)) != 0)
|
|
{
|
|
if (filename_cmp (newbfd->filename, ibfd->filename) == 0)
|
|
break;
|
|
}
|
|
if (!newbfd)
|
|
{
|
|
einfo (_("%X%s(%s): can't find member in archive"),
|
|
ibfd->my_archive->filename, ibfd->filename);
|
|
return;
|
|
}
|
|
}
|
|
newbfd->archive_next = head;
|
|
head = newbfd;
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
/* Don't add PRIVATE entries to import lib. */
|
|
if (pe_def_file->exports[i].flag_private)
|
|
continue;
|
|
def->exports[i].internal_name = def->exports[i].name;
|
|
n = make_one (def->exports + i, outarch,
|
|
! (def->exports + i)->flag_data);
|
|
n->archive_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->archive_next = head;
|
|
ar_tail->archive_next = ar_head;
|
|
head = ar_tail;
|
|
|
|
if (! bfd_set_archive_head (outarch, head))
|
|
einfo ("%Xbfd_set_archive_head: %E\n");
|
|
|
|
if (! bfd_close (outarch))
|
|
einfo ("%Xbfd_close %s: %E\n", impfilename);
|
|
|
|
while (head != NULL)
|
|
{
|
|
bfd *n = head->archive_next;
|
|
bfd_close (head);
|
|
head = n;
|
|
}
|
|
}
|
|
|
|
static int undef_count = 0;
|
|
|
|
struct key_value
|
|
{
|
|
char *key;
|
|
const char *oname;
|
|
};
|
|
|
|
static struct key_value *udef_table;
|
|
|
|
static int undef_sort_cmp (const void *l1, const void *r1)
|
|
{
|
|
const struct key_value *l = l1;
|
|
const struct key_value *r = r1;
|
|
|
|
return strcmp (l->key, r->key);
|
|
}
|
|
|
|
static struct bfd_link_hash_entry *
|
|
pe_find_cdecl_alias_match (struct bfd_link_info *linfo, char *name)
|
|
{
|
|
struct bfd_link_hash_entry *h = NULL;
|
|
struct key_value *kv;
|
|
struct key_value key;
|
|
char *at, *lname = (char *) alloca (strlen (name) + 3);
|
|
|
|
strcpy (lname, name);
|
|
|
|
at = strchr (lname + (lname[0] == '@'), '@');
|
|
if (at)
|
|
at[1] = 0;
|
|
|
|
key.key = lname;
|
|
kv = bsearch (&key, udef_table, undef_count, sizeof (struct key_value),
|
|
undef_sort_cmp);
|
|
|
|
if (kv)
|
|
{
|
|
h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
|
|
if (h->type == bfd_link_hash_undefined)
|
|
return h;
|
|
}
|
|
if (lname[0] == '?')
|
|
return NULL;
|
|
if (at || lname[0] == '@')
|
|
{
|
|
if (lname[0] == '@')
|
|
{
|
|
if (pe_details->underscored)
|
|
lname[0] = '_';
|
|
else
|
|
strcpy (lname, lname + 1);
|
|
key.key = lname;
|
|
kv = bsearch (&key, udef_table, undef_count,
|
|
sizeof (struct key_value), undef_sort_cmp);
|
|
if (kv)
|
|
{
|
|
h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
|
|
if (h->type == bfd_link_hash_undefined)
|
|
return h;
|
|
}
|
|
}
|
|
if (at)
|
|
*strchr (lname, '@') = 0;
|
|
key.key = lname;
|
|
kv = bsearch (&key, udef_table, undef_count,
|
|
sizeof (struct key_value), undef_sort_cmp);
|
|
if (kv)
|
|
{
|
|
h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
|
|
if (h->type == bfd_link_hash_undefined)
|
|
return h;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
strcat (lname, "@");
|
|
key.key = lname;
|
|
kv = bsearch (&key, udef_table, undef_count,
|
|
sizeof (struct key_value), undef_sort_cmp);
|
|
|
|
if (kv)
|
|
{
|
|
h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
|
|
if (h->type == bfd_link_hash_undefined)
|
|
return h;
|
|
}
|
|
|
|
if (lname[0] == '_' && pe_details->underscored)
|
|
lname[0] = '@';
|
|
else
|
|
{
|
|
memmove (lname + 1, lname, strlen (lname) + 1);
|
|
lname[0] = '@';
|
|
}
|
|
key.key = lname;
|
|
|
|
kv = bsearch (&key, udef_table, undef_count,
|
|
sizeof (struct key_value), undef_sort_cmp);
|
|
|
|
if (kv)
|
|
{
|
|
h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
|
|
if (h->type == bfd_link_hash_undefined)
|
|
return h;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bfd_boolean
|
|
pe_undef_count (struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
|
|
void *inf ATTRIBUTE_UNUSED)
|
|
{
|
|
if (h->type == bfd_link_hash_undefined)
|
|
undef_count++;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
pe_undef_fill (struct bfd_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
|
{
|
|
if (h->type == bfd_link_hash_undefined)
|
|
{
|
|
char *at;
|
|
|
|
udef_table[undef_count].key = xstrdup (h->root.string);
|
|
at = strchr (udef_table[undef_count].key
|
|
+ (udef_table[undef_count].key[0] == '@'), '@');
|
|
if (at)
|
|
at[1] = 0;
|
|
udef_table[undef_count].oname = h->root.string;
|
|
undef_count++;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
pe_create_undef_table (void)
|
|
{
|
|
undef_count = 0;
|
|
|
|
/* count undefined symbols */
|
|
|
|
bfd_link_hash_traverse (link_info.hash, pe_undef_count, "");
|
|
|
|
/* create and fill the corresponding table */
|
|
udef_table = xmalloc (undef_count * sizeof (struct key_value));
|
|
|
|
undef_count = 0;
|
|
bfd_link_hash_traverse (link_info.hash, pe_undef_fill, "");
|
|
|
|
/* sort items */
|
|
qsort (udef_table, undef_count, sizeof (struct key_value), undef_sort_cmp);
|
|
}
|
|
|
|
static void
|
|
add_bfd_to_link (bfd *abfd, const char *name, struct bfd_link_info *linfo)
|
|
{
|
|
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, linfo))
|
|
einfo ("%Xaddsym %s: %E\n", name);
|
|
}
|
|
|
|
void
|
|
pe_process_import_defs (bfd *output_bfd, struct bfd_link_info *linfo)
|
|
{
|
|
int i, j;
|
|
def_file_module *module;
|
|
def_file_import *imp;
|
|
|
|
pe_dll_id_target (bfd_get_target (output_bfd));
|
|
|
|
if (!pe_def_file)
|
|
return;
|
|
|
|
imp = pe_def_file->imports;
|
|
|
|
pe_create_undef_table ();
|
|
|
|
for (module = pe_def_file->modules; module; module = module->next)
|
|
{
|
|
int do_this_dll = 0;
|
|
|
|
for (i = 0; i < pe_def_file->num_imports && imp[i].module != module; i++)
|
|
;
|
|
if (i >= pe_def_file->num_imports)
|
|
continue;
|
|
|
|
dll_filename = module->name;
|
|
dll_symname = xstrdup (module->name);
|
|
for (j = 0; dll_symname[j]; j++)
|
|
if (!ISALNUM (dll_symname[j]))
|
|
dll_symname[j] = '_';
|
|
|
|
for (; i < pe_def_file->num_imports && imp[i].module == module; i++)
|
|
{
|
|
def_file_export exp;
|
|
struct bfd_link_hash_entry *blhe;
|
|
int lead_at = (*imp[i].internal_name == '@');
|
|
/* See if we need this import. */
|
|
size_t len = strlen (imp[i].internal_name);
|
|
char *name = xmalloc (len + 2 + 6);
|
|
bfd_boolean include_jmp_stub = FALSE;
|
|
bfd_boolean is_cdecl = FALSE;
|
|
bfd_boolean is_undef = FALSE;
|
|
|
|
if (!lead_at && strchr (imp[i].internal_name, '@') == NULL)
|
|
is_cdecl = TRUE;
|
|
|
|
if (lead_at)
|
|
sprintf (name, "%s", imp[i].internal_name);
|
|
else
|
|
sprintf (name, "%s%s",U (""), imp[i].internal_name);
|
|
|
|
blhe = bfd_link_hash_lookup (linfo->hash, name,
|
|
FALSE, FALSE, FALSE);
|
|
|
|
/* Include the jump stub for <sym> only if the <sym>
|
|
is undefined. */
|
|
if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined))
|
|
{
|
|
if (lead_at)
|
|
sprintf (name, "%s%s", "__imp_", imp[i].internal_name);
|
|
else
|
|
sprintf (name, "%s%s%s", "__imp_", U (""),
|
|
imp[i].internal_name);
|
|
|
|
blhe = bfd_link_hash_lookup (linfo->hash, name,
|
|
FALSE, FALSE, FALSE);
|
|
if (blhe)
|
|
is_undef = (blhe->type == bfd_link_hash_undefined);
|
|
}
|
|
else
|
|
{
|
|
include_jmp_stub = TRUE;
|
|
is_undef = (blhe->type == bfd_link_hash_undefined);
|
|
}
|
|
|
|
if (is_cdecl && (!blhe || (blhe && blhe->type != bfd_link_hash_undefined)))
|
|
{
|
|
sprintf (name, "%s%s",U (""), imp[i].internal_name);
|
|
blhe = pe_find_cdecl_alias_match (linfo, name);
|
|
include_jmp_stub = TRUE;
|
|
if (blhe)
|
|
is_undef = (blhe->type == bfd_link_hash_undefined);
|
|
}
|
|
|
|
free (name);
|
|
|
|
if (is_undef)
|
|
{
|
|
bfd *one;
|
|
/* We do. */
|
|
if (!do_this_dll)
|
|
{
|
|
bfd *ar_head = make_head (output_bfd);
|
|
add_bfd_to_link (ar_head, ar_head->filename, linfo);
|
|
do_this_dll = 1;
|
|
}
|
|
exp.internal_name = imp[i].internal_name;
|
|
exp.name = imp[i].name;
|
|
exp.its_name = imp[i].its_name;
|
|
exp.ordinal = imp[i].ordinal;
|
|
exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0;
|
|
exp.flag_private = 0;
|
|
exp.flag_constant = 0;
|
|
exp.flag_data = imp[i].data;
|
|
exp.flag_noname = exp.name ? 0 : 1;
|
|
one = make_one (&exp, output_bfd, (! exp.flag_data) && include_jmp_stub);
|
|
add_bfd_to_link (one, one->filename, linfo);
|
|
}
|
|
}
|
|
if (do_this_dll)
|
|
{
|
|
bfd *ar_tail = make_tail (output_bfd);
|
|
add_bfd_to_link (ar_tail, ar_tail->filename, linfo);
|
|
}
|
|
|
|
free (dll_symname);
|
|
}
|
|
|
|
while (undef_count)
|
|
{
|
|
--undef_count;
|
|
free (udef_table[undef_count].key);
|
|
}
|
|
free (udef_table);
|
|
}
|
|
|
|
/* 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 (bfd *abfd, int where)
|
|
{
|
|
unsigned char b[2];
|
|
|
|
bfd_seek (abfd, (file_ptr) where, SEEK_SET);
|
|
bfd_bread (b, (bfd_size_type) 2, abfd);
|
|
return b[0] + (b[1] << 8);
|
|
}
|
|
|
|
static unsigned int
|
|
pe_get32 (bfd *abfd, int where)
|
|
{
|
|
unsigned char b[4];
|
|
|
|
bfd_seek (abfd, (file_ptr) where, SEEK_SET);
|
|
bfd_bread (b, (bfd_size_type) 4, abfd);
|
|
return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
|
|
}
|
|
|
|
static unsigned int
|
|
pe_as32 (void *ptr)
|
|
{
|
|
unsigned char *b = ptr;
|
|
|
|
return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
|
|
}
|
|
|
|
bfd_boolean
|
|
pe_implied_import_dll (const char *filename)
|
|
{
|
|
bfd *dll;
|
|
bfd_vma pe_header_offset, opthdr_ofs, num_entries, i;
|
|
bfd_vma export_rva, export_size, nsections, secptr, expptr;
|
|
bfd_vma exp_funcbase;
|
|
unsigned char *expdata;
|
|
char *erva;
|
|
bfd_vma name_rvas, nexp;
|
|
const char *dllname;
|
|
/* Initialization with start > end guarantees that is_data
|
|
will not be set by mistake, and avoids compiler warning. */
|
|
bfd_vma data_start = 1;
|
|
bfd_vma data_end = 0;
|
|
bfd_vma rdata_start = 1;
|
|
bfd_vma rdata_end = 0;
|
|
bfd_vma bss_start = 1;
|
|
bfd_vma bss_end = 0;
|
|
|
|
/* 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: %E\n", filename);
|
|
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;
|
|
}
|
|
|
|
/* Get pe_header, optional header and numbers of directory entries. */
|
|
pe_header_offset = pe_get32 (dll, 0x3c);
|
|
opthdr_ofs = pe_header_offset + 4 + 20;
|
|
#ifdef pe_use_x86_64
|
|
num_entries = pe_get32 (dll, opthdr_ofs + 92 + 4 * 4); /* & NumberOfRvaAndSizes. */
|
|
#else
|
|
num_entries = pe_get32 (dll, opthdr_ofs + 92);
|
|
#endif
|
|
|
|
/* No import or export directory entry. */
|
|
if (num_entries < 1)
|
|
return FALSE;
|
|
|
|
#ifdef pe_use_x86_64
|
|
export_rva = pe_get32 (dll, opthdr_ofs + 96 + 4 * 4);
|
|
export_size = pe_get32 (dll, opthdr_ofs + 100 + 4 * 4);
|
|
#else
|
|
export_rva = pe_get32 (dll, opthdr_ofs + 96);
|
|
export_size = pe_get32 (dll, opthdr_ofs + 100);
|
|
#endif
|
|
|
|
/* No export table - nothing to export. */
|
|
if (export_size == 0)
|
|
return FALSE;
|
|
|
|
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;
|
|
|
|
/* Get the rva and size of the export section. */
|
|
for (i = 0; i < nsections; i++)
|
|
{
|
|
char sname[8];
|
|
bfd_vma secptr1 = secptr + 40 * i;
|
|
bfd_vma vaddr = pe_get32 (dll, secptr1 + 12);
|
|
bfd_vma vsize = pe_get32 (dll, secptr1 + 16);
|
|
bfd_vma fptr = pe_get32 (dll, secptr1 + 20);
|
|
|
|
bfd_seek (dll, (file_ptr) secptr1, SEEK_SET);
|
|
bfd_bread (sname, (bfd_size_type) 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;
|
|
}
|
|
}
|
|
|
|
/* Scan sections and store the base and size of the
|
|
data and bss segments in data/base_start/end. */
|
|
for (i = 0; i < nsections; i++)
|
|
{
|
|
bfd_vma secptr1 = secptr + 40 * i;
|
|
bfd_vma vsize = pe_get32 (dll, secptr1 + 8);
|
|
bfd_vma vaddr = pe_get32 (dll, secptr1 + 12);
|
|
bfd_vma flags = pe_get32 (dll, secptr1 + 36);
|
|
char sec_name[9];
|
|
|
|
sec_name[8] = '\0';
|
|
bfd_seek (dll, (file_ptr) secptr1 + 0, SEEK_SET);
|
|
bfd_bread (sec_name, (bfd_size_type) 8, dll);
|
|
|
|
if (strcmp(sec_name,".data") == 0)
|
|
{
|
|
data_start = vaddr;
|
|
data_end = vaddr + vsize;
|
|
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
|
|
__FUNCTION__, sec_name, (unsigned long) vaddr,
|
|
(unsigned long) (vaddr + vsize), (unsigned long) flags);
|
|
}
|
|
else if (strcmp(sec_name,".rdata") == 0)
|
|
{
|
|
rdata_start = vaddr;
|
|
rdata_end = vaddr + vsize;
|
|
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
|
|
__FUNCTION__, sec_name, (unsigned long) vaddr,
|
|
(unsigned long) (vaddr + vsize), (unsigned long) flags);
|
|
}
|
|
else if (strcmp (sec_name,".bss") == 0)
|
|
{
|
|
bss_start = vaddr;
|
|
bss_end = vaddr + vsize;
|
|
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
|
|
__FUNCTION__, sec_name, (unsigned long) vaddr,
|
|
(unsigned long) (vaddr + vsize), (unsigned long) flags);
|
|
}
|
|
}
|
|
|
|
expdata = xmalloc (export_size);
|
|
bfd_seek (dll, (file_ptr) expptr, SEEK_SET);
|
|
bfd_bread (expdata, (bfd_size_type) export_size, dll);
|
|
erva = (char *) 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);
|
|
exp_funcbase = pe_as32 (expdata + 28);
|
|
|
|
/* Use internal dll name instead of filename
|
|
to enable symbolic dll linking. */
|
|
dllname = erva + pe_as32 (expdata + 12);
|
|
|
|
/* Check to see if the dll has already been added to
|
|
the definition list and if so return without error.
|
|
This avoids multiple symbol definitions. */
|
|
if (def_get_module (pe_def_file, dllname))
|
|
{
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("%s is already loaded\n", dllname);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Iterate through the list of symbols. */
|
|
for (i = 0; i < nexp; i++)
|
|
{
|
|
/* Pointer to the names vector. */
|
|
bfd_vma name_rva = pe_as32 (erva + name_rvas + i * 4);
|
|
def_file_import *imp;
|
|
/* Pointer to the function address vector. */
|
|
bfd_vma func_rva = pe_as32 (erva + exp_funcbase + i * 4);
|
|
int is_data = 0;
|
|
|
|
/* Skip unwanted symbols, which are
|
|
exported in buggy auto-import releases. */
|
|
if (! CONST_STRNEQ (erva + name_rva, "__nm_"))
|
|
{
|
|
int is_dup = 0;
|
|
/* is_data is true if the address is in the data, rdata or bss
|
|
segment. */
|
|
is_data =
|
|
(func_rva >= data_start && func_rva < data_end)
|
|
|| (func_rva >= rdata_start && func_rva < rdata_end)
|
|
|| (func_rva >= bss_start && func_rva < bss_end);
|
|
|
|
imp = def_file_add_import (pe_def_file, erva + name_rva,
|
|
dllname, i, NULL, NULL, &is_dup);
|
|
/* Mark symbol type. */
|
|
if (!is_dup)
|
|
imp->data = is_data;
|
|
|
|
if (pe_dll_extra_pe_debug)
|
|
printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
|
|
__FUNCTION__, dllname, erva + name_rva,
|
|
(unsigned long) func_rva, is_data ? "(data)" : "");
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
pe_output_file_set_long_section_names (bfd *abfd)
|
|
{
|
|
if (pe_use_coff_long_section_names < 0)
|
|
return;
|
|
if (!bfd_coff_set_long_section_names (abfd, pe_use_coff_long_section_names))
|
|
einfo (_("%XError: can't use long section names on this arch\n"));
|
|
}
|
|
|
|
/* 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 (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
pe_output_file_set_long_section_names (abfd);
|
|
process_def_file_and_drectve (abfd, info);
|
|
|
|
if (pe_def_file->num_exports == 0 && !bfd_link_pic (info))
|
|
return;
|
|
|
|
generate_edata (abfd, info);
|
|
build_filler_bfd (1);
|
|
pe_output_file_set_long_section_names (filler_bfd);
|
|
}
|
|
|
|
void
|
|
pe_exe_build_sections (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
pe_output_file_set_long_section_names (abfd);
|
|
build_filler_bfd (0);
|
|
pe_output_file_set_long_section_names (filler_bfd);
|
|
}
|
|
|
|
void
|
|
pe_dll_fill_sections (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
pe_output_file_set_long_section_names (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_reset_memory_regions ();
|
|
lang_size_sections (NULL, TRUE);
|
|
|
|
/* Redo special stuff. */
|
|
ldemul_after_allocation ();
|
|
|
|
/* Do the assignments again. */
|
|
lang_do_assignments (lang_final_phase_enum);
|
|
}
|
|
|
|
fill_edata (abfd, info);
|
|
|
|
if (bfd_link_dll (info))
|
|
pe_data (abfd)->dll = 1;
|
|
|
|
edata_s->contents = edata_d;
|
|
reloc_s->contents = reloc_d;
|
|
}
|
|
|
|
void
|
|
pe_exe_fill_sections (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
pe_dll_id_target (bfd_get_target (abfd));
|
|
pe_output_file_set_long_section_names (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_reset_memory_regions ();
|
|
lang_size_sections (NULL, TRUE);
|
|
|
|
/* Redo special stuff. */
|
|
ldemul_after_allocation ();
|
|
|
|
/* Do the assignments again. */
|
|
lang_do_assignments (lang_final_phase_enum);
|
|
}
|
|
reloc_s->contents = reloc_d;
|
|
}
|
|
|
|
bfd_boolean
|
|
pe_bfd_is_dll (bfd *abfd)
|
|
{
|
|
return (bfd_get_format (abfd) == bfd_object
|
|
&& obj_pe (abfd)
|
|
&& pe_data (abfd)->dll);
|
|
}
|