1 /* Routines to help build PEI-format DLLs (Win32 etc)
2 Copyright (C) 1998-2020 Free Software Foundation, Inc.
3 Written by DJ Delorie <dj@cygnus.com>
5 This file is part of the GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
25 #include "libiberty.h"
26 #include "filenames.h"
27 #include "safe-ctype.h"
41 #include "coff/internal.h"
42 #include "../bfd/libcoff.h"
47 #define PE_IDATA4_SIZE 8
48 #define PE_IDATA5_SIZE 8
51 #define AOUTSZ PEPAOUTSZ
52 #define PEAOUTHDR PEPAOUTHDR
60 #ifndef PE_IDATA4_SIZE
61 #define PE_IDATA4_SIZE 4
64 #ifndef PE_IDATA5_SIZE
65 #define PE_IDATA5_SIZE 4
68 /* This file turns a regular Windows PE image into a DLL. Because of
69 the complexity of this operation, it has been broken down into a
70 number of separate modules which are all called by the main function
71 at the end of this file. This function is not re-entrant and is
72 normally only called once, so static variables are used to reduce
73 the number of parameters and return values required.
75 See also: ld/emultempl/pe.em and ld/emultempl/pep.em. */
77 /* Auto-import feature by Paul Sokolovsky
81 1. With this feature on, DLL clients can import variables from DLL
82 without any concern from their side (for example, without any source
85 2. This is done completely in bounds of the PE specification (to be fair,
86 there's a place where it pokes nose out of, but in practice it works).
87 So, resulting module can be used with any other PE compiler/linker.
89 3. Auto-import is fully compatible with standard import method and they
90 can be mixed together.
92 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each
93 reference to it; load time: negligible; virtual/physical memory: should be
94 less than effect of DLL relocation, and I sincerely hope it doesn't affect
95 DLL sharability (too much).
99 The obvious and only way to get rid of dllimport insanity is to make client
100 access variable directly in the DLL, bypassing extra dereference. I.e.,
101 whenever client contains something like
105 address of dll_var in the command should be relocated to point into loaded
106 DLL. The aim is to make OS loader do so, and than make ld help with that.
107 Import section of PE made following way: there's a vector of structures
108 each describing imports from particular DLL. Each such structure points
109 to two other parallel vectors: one holding imported names, and one which
110 will hold address of corresponding imported name. So, the solution is
111 de-vectorize these structures, making import locations be sparse and
112 pointing directly into code. Before continuing, it is worth a note that,
113 while authors strives to make PE act ELF-like, there're some other people
114 make ELF act PE-like: elfvector, ;-) .
118 For each reference of data symbol to be imported from DLL (to set of which
119 belong symbols with name <sym>, if __imp_<sym> is found in implib), the
120 import fixup entry is generated. That entry is of type
121 IMAGE_IMPORT_DESCRIPTOR and stored in .idata$2 subsection. Each
122 fixup entry contains pointer to symbol's address within .text section
123 (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name
124 (so, DLL name is referenced by multiple entries), and pointer to symbol
125 name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>)
126 pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly
127 containing imported name. Here comes that "on the edge" problem mentioned
128 above: PE specification rambles that name vector (OriginalFirstThunk)
129 should run in parallel with addresses vector (FirstThunk), i.e. that they
130 should have same number of elements and terminated with zero. We violate
131 this, since FirstThunk points directly into machine code. But in practice,
132 OS loader implemented the sane way: it goes through OriginalFirstThunk and
133 puts addresses to FirstThunk, not something else. It once again should be
134 noted that dll and symbol name structures are reused across fixup entries
135 and should be there anyway to support standard import stuff, so sustained
136 overhead is 20 bytes per reference. Other question is whether having several
137 IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is
138 done even by native compiler/linker (libth32's functions are in fact reside
139 in windows9x kernel32.dll, so if you use it, you have two
140 IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether
141 referencing the same PE structures several times is valid. The answer is why
142 not, prohibiting that (detecting violation) would require more work on
143 behalf of loader than not doing it.
145 See also: ld/emultempl/pe.em and ld/emultempl/pep.em. */
147 static void add_bfd_to_link (bfd
*, const char *, struct bfd_link_info
*);
149 /* For emultempl/pe.em. */
151 def_file
* pe_def_file
= 0;
152 int pe_dll_export_everything
= 0;
153 int pe_dll_exclude_all_symbols
= 0;
154 int pe_dll_do_default_excludes
= 1;
155 int pe_dll_kill_ats
= 0;
156 int pe_dll_stdcall_aliases
= 0;
157 int pe_dll_warn_dup_exports
= 0;
158 int pe_dll_compat_implib
= 0;
159 int pe_dll_extra_pe_debug
= 0;
160 int pe_use_nul_prefixed_import_tables
= 0;
161 int pe_use_coff_long_section_names
= -1;
162 int pe_leading_underscore
= -1;
163 int pe_dll_enable_reloc_section
= 0;
165 /* Static variables and types. */
167 static bfd_vma image_base
;
168 static bfd
*filler_bfd
;
169 static struct bfd_section
*edata_s
, *reloc_s
;
170 static unsigned char *edata_d
, *reloc_d
;
171 static size_t edata_sz
, reloc_sz
;
172 static int runtime_pseudo_relocs_created
= 0;
173 static bfd_boolean runtime_pseudp_reloc_v2_init
= FALSE
;
180 autofilter_entry_type
;
184 const char *target_name
;
185 const char *object_target
;
186 unsigned int imagebase_reloc
;
189 bfd_boolean underscored
;
190 const autofilter_entry_type
* autofilter_symbollist
;
194 static const autofilter_entry_type autofilter_symbollist_generic
[] =
196 { STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
197 /* Entry point symbols. */
198 { STRING_COMMA_LEN ("DllMain") },
199 { STRING_COMMA_LEN ("DllMainCRTStartup") },
200 { STRING_COMMA_LEN ("_DllMainCRTStartup") },
201 /* Runtime pseudo-reloc. */
202 { STRING_COMMA_LEN ("_pei386_runtime_relocator") },
203 { STRING_COMMA_LEN ("do_pseudo_reloc") },
207 static const autofilter_entry_type autofilter_symbollist_i386
[] =
209 { STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
210 /* Entry point symbols, and entry hooks. */
211 { STRING_COMMA_LEN ("cygwin_crt0") },
213 { STRING_COMMA_LEN ("DllMain") },
214 { STRING_COMMA_LEN ("DllEntryPoint") },
215 { STRING_COMMA_LEN ("DllMainCRTStartup") },
216 { STRING_COMMA_LEN ("_cygwin_dll_entry") },
217 { STRING_COMMA_LEN ("_cygwin_crt0_common") },
218 { STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry") },
220 { STRING_COMMA_LEN ("DllMain@12") },
221 { STRING_COMMA_LEN ("DllEntryPoint@0") },
222 { STRING_COMMA_LEN ("DllMainCRTStartup@12") },
223 { STRING_COMMA_LEN ("_cygwin_dll_entry@12") },
224 { STRING_COMMA_LEN ("_cygwin_crt0_common@8") },
225 { STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry@12") },
226 { STRING_COMMA_LEN ("cygwin_attach_dll") },
228 { STRING_COMMA_LEN ("cygwin_premain0") },
229 { STRING_COMMA_LEN ("cygwin_premain1") },
230 { STRING_COMMA_LEN ("cygwin_premain2") },
231 { STRING_COMMA_LEN ("cygwin_premain3") },
232 /* Runtime pseudo-reloc. */
233 { STRING_COMMA_LEN ("_pei386_runtime_relocator") },
234 { STRING_COMMA_LEN ("do_pseudo_reloc") },
235 /* Global vars that should not be exported. */
236 { STRING_COMMA_LEN ("impure_ptr") },
237 { STRING_COMMA_LEN ("_impure_ptr") },
238 { STRING_COMMA_LEN ("_fmode") },
239 { STRING_COMMA_LEN ("environ") },
240 { STRING_COMMA_LEN ("__dso_handle") },
244 #define PE_ARCH_i386 1
246 #define PE_ARCH_mips 3
247 #define PE_ARCH_arm 4
248 #define PE_ARCH_arm_wince 5
250 /* Don't make it constant as underscore mode gets possibly overriden
251 by target or -(no-)leading-underscore option. */
252 static pe_details_type pe_detail_list
[] =
271 autofilter_symbollist_i386
281 autofilter_symbollist_i386
287 16 /* R_SH_IMAGEBASE */,
291 autofilter_symbollist_generic
300 autofilter_symbollist_generic
309 autofilter_symbollist_generic
312 "pei-arm-wince-little",
313 "pe-arm-wince-little",
314 2, /* ARM_RVA32 on Windows CE, see bfd/coff-arm.c. */
318 autofilter_symbollist_generic
320 { NULL
, NULL
, 0, 0, 0, FALSE
, NULL
}
323 static const pe_details_type
*pe_details
;
325 /* Do not specify library suffix explicitly, to allow for dllized versions. */
326 static const autofilter_entry_type autofilter_liblist
[] =
328 { STRING_COMMA_LEN ("libcegcc") },
329 { STRING_COMMA_LEN ("libcygwin") },
330 { STRING_COMMA_LEN ("libgcc") },
331 { STRING_COMMA_LEN ("libgcc_s") },
332 { STRING_COMMA_LEN ("libstdc++") },
333 { STRING_COMMA_LEN ("libmingw32") },
334 { STRING_COMMA_LEN ("libmingwex") },
335 { STRING_COMMA_LEN ("libg2c") },
336 { STRING_COMMA_LEN ("libsupc++") },
337 { STRING_COMMA_LEN ("libobjc") },
338 { STRING_COMMA_LEN ("libgcj") },
339 { STRING_COMMA_LEN ("libmsvcrt") },
340 { STRING_COMMA_LEN ("libmsvcrt-os") },
341 { STRING_COMMA_LEN ("libucrtbase") },
345 /* Regardless of the suffix issue mentioned above, we must ensure that
346 we do not falsely match on a leading substring, such as when libtool
347 builds libstdc++ as a DLL using libsupc++convenience.a as an intermediate.
348 This routine ensures that the leading part of the name matches and that
349 it is followed by only an optional version suffix and a file extension,
350 returning zero if so or -1 if not. */
351 static int libnamencmp (const char *libname
, const autofilter_entry_type
*afptr
)
353 if (filename_ncmp (libname
, afptr
->name
, afptr
->len
))
356 libname
+= afptr
->len
;
358 /* Be liberal in interpreting what counts as a version suffix; we
359 accept anything that has a dash to separate it from the name and
360 begins with a digit. */
361 if (libname
[0] == '-')
363 if (!ISDIGIT (*++libname
))
365 /* Ensure the filename has an extension. */
366 while (*++libname
!= '.')
370 else if (libname
[0] != '.')
376 static const autofilter_entry_type autofilter_objlist
[] =
378 { STRING_COMMA_LEN ("crt0.o") },
379 { STRING_COMMA_LEN ("crt1.o") },
380 { STRING_COMMA_LEN ("crt2.o") },
381 { STRING_COMMA_LEN ("dllcrt1.o") },
382 { STRING_COMMA_LEN ("dllcrt2.o") },
383 { STRING_COMMA_LEN ("gcrt0.o") },
384 { STRING_COMMA_LEN ("gcrt1.o") },
385 { STRING_COMMA_LEN ("gcrt2.o") },
386 { STRING_COMMA_LEN ("crtbegin.o") },
387 { STRING_COMMA_LEN ("crtend.o") },
391 static const autofilter_entry_type autofilter_symbolprefixlist
[] =
393 /* _imp_ is treated specially, as it is always underscored. */
394 /* { STRING_COMMA_LEN ("_imp_") }, */
395 /* Don't export some c++ symbols. */
396 { STRING_COMMA_LEN ("__rtti_") },
397 { STRING_COMMA_LEN ("__builtin_") },
398 /* Don't re-export auto-imported symbols. */
399 { STRING_COMMA_LEN ("__nm_") },
400 /* Don't export symbols specifying internal DLL layout. */
401 { STRING_COMMA_LEN ("_head_") },
402 { STRING_COMMA_LEN ("_IMPORT_DESCRIPTOR_") },
403 /* Don't export section labels or artificial symbols
405 { STRING_COMMA_LEN (".") },
409 static const autofilter_entry_type autofilter_symbolsuffixlist
[] =
411 { STRING_COMMA_LEN ("_iname") },
412 { STRING_COMMA_LEN ("_NULL_THUNK_DATA") },
416 #define U(str) (pe_details->underscored ? "_" str : str)
419 pe_dll_id_target (const char *target
)
423 for (i
= 0; pe_detail_list
[i
].target_name
; i
++)
424 if (strcmp (pe_detail_list
[i
].target_name
, target
) == 0
425 || strcmp (pe_detail_list
[i
].object_target
, target
) == 0)
427 int u
= pe_leading_underscore
; /* Underscoring mode. -1 for use default. */
429 bfd_get_target_info (target
, NULL
, NULL
, &u
, NULL
);
432 pe_detail_list
[i
].underscored
= (u
!= 0 ? TRUE
: FALSE
);
433 pe_details
= pe_detail_list
+ i
;
434 pe_leading_underscore
= (u
!= 0 ? 1 : 0);
437 einfo (_("%X%P: unsupported PEI architecture: %s\n"), target
);
441 /* Helper functions for qsort. Relocs must be sorted so that we can write
442 them out by pages. */
454 reloc_sort (const void *va
, const void *vb
)
456 const reloc_data_type
*a
= (const reloc_data_type
*) va
;
457 const reloc_data_type
*b
= (const reloc_data_type
*) vb
;
471 pe_export_sort (const void *va
, const void *vb
)
473 const def_file_export
*a
= va
;
474 const def_file_export
*b
= vb
;
482 return strcmp (an
, bn
);
485 /* Read and process the .DEF file. */
487 /* These correspond to the entries in pe_def_file->exports[]. I use
488 exported_symbol_sections[i] to tag whether or not the symbol was
489 defined, since we can't export symbols we don't have. */
491 static bfd_vma
*exported_symbol_offsets
;
492 static struct bfd_section
**exported_symbol_sections
;
493 static int export_table_size
;
494 static int count_exported
;
495 static int count_exported_byname
;
496 static int count_with_ordinals
;
497 static const char *dll_name
;
498 static int min_ordinal
, max_ordinal
;
499 static int *exported_symbols
;
501 typedef struct exclude_list_struct
504 struct exclude_list_struct
*next
;
509 static struct exclude_list_struct
*excludes
= 0;
512 pe_dll_add_excludes (const char *new_excludes
, const exclude_type type
)
515 char *exclude_string
;
517 local_copy
= xstrdup (new_excludes
);
519 exclude_string
= strtok (local_copy
, ",:");
520 for (; exclude_string
; exclude_string
= strtok (NULL
, ",:"))
522 struct exclude_list_struct
*new_exclude
;
524 new_exclude
= xmalloc (sizeof (struct exclude_list_struct
));
525 new_exclude
->string
= xmalloc (strlen (exclude_string
) + 1);
526 strcpy (new_exclude
->string
, exclude_string
);
527 new_exclude
->type
= type
;
528 new_exclude
->next
= excludes
;
529 excludes
= new_exclude
;
536 is_import (const char* n
)
538 return (CONST_STRNEQ (n
, "__imp_"));
541 /* abfd is a bfd containing n (or NULL)
542 It can be used for contextual checks. */
545 auto_export (bfd
*abfd
, def_file
*d
, const char *n
)
548 struct exclude_list_struct
*ex
;
549 const autofilter_entry_type
*afptr
;
550 const char * libname
= NULL
;
552 if (abfd
&& abfd
->my_archive
)
553 libname
= lbasename (abfd
->my_archive
->filename
);
555 key
.name
= key
.its_name
= (char *) n
;
557 /* Return false if n is in the d->exports table. */
558 if (bsearch (&key
, d
->exports
, d
->num_exports
,
559 sizeof (pe_def_file
->exports
[0]), pe_export_sort
))
562 if (pe_dll_do_default_excludes
)
567 if (pe_dll_extra_pe_debug
)
568 printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n",
569 n
, abfd
, abfd
->my_archive
);
571 /* First of all, make context checks:
572 Don't export anything from standard libs. */
575 afptr
= autofilter_liblist
;
579 if (libnamencmp (libname
, afptr
) == 0 )
585 /* Next, exclude symbols from certain startup objects. */
587 if (abfd
&& (p
= lbasename (abfd
->filename
)))
589 afptr
= autofilter_objlist
;
592 if (strcmp (p
, afptr
->name
) == 0)
598 /* Don't try to blindly exclude all symbols
599 that begin with '__'; this was tried and
600 it is too restrictive. Instead we have
601 a target specific list to use: */
602 afptr
= pe_details
->autofilter_symbollist
;
606 if (strcmp (n
, afptr
->name
) == 0)
612 /* Next, exclude symbols starting with ... */
613 afptr
= autofilter_symbolprefixlist
;
616 if (strncmp (n
, afptr
->name
, afptr
->len
) == 0)
622 /* Finally, exclude symbols ending with ... */
624 afptr
= autofilter_symbolsuffixlist
;
627 if ((len
>= afptr
->len
)
628 /* Add 1 to insure match with trailing '\0'. */
629 && strncmp (n
+ len
- afptr
->len
, afptr
->name
,
630 afptr
->len
+ 1) == 0)
637 for (ex
= excludes
; ex
; ex
= ex
->next
)
639 if (ex
->type
== EXCLUDELIBS
)
642 && ((filename_cmp (libname
, ex
->string
) == 0)
643 || (strcasecmp ("ALL", ex
->string
) == 0)))
646 else if (ex
->type
== EXCLUDEFORIMPLIB
)
648 if (filename_cmp (abfd
->filename
, ex
->string
) == 0)
651 else if (strcmp (n
, ex
->string
) == 0)
659 process_def_file_and_drectve (bfd
*abfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
662 struct bfd_link_hash_entry
*blhe
;
664 struct bfd_section
*s
;
665 def_file_export
*e
= 0;
666 bfd_boolean resort_needed
;
669 pe_def_file
= def_file_empty ();
671 /* First, run around to all the objects looking for the .drectve
672 sections, and push those into the def file too. */
673 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
675 s
= bfd_get_section_by_name (b
, ".drectve");
679 char *buf
= xmalloc (size
);
681 bfd_get_section_contents (b
, s
, buf
, 0, size
);
682 def_file_add_directive (pe_def_file
, buf
, size
);
687 /* Process aligned common symbol information from the
688 .drectve sections now; common symbol allocation is
689 done before final link, so it will be too late to
690 process them in process_embedded_commands() called
691 from _bfd_coff_link_input_bfd(). */
692 if (pe_def_file
->aligncomms
)
694 def_file_aligncomm
*ac
= pe_def_file
->aligncomms
;
697 struct coff_link_hash_entry
*sym_hash
;
698 sym_hash
= coff_link_hash_lookup (coff_hash_table (info
),
699 ac
->symbol_name
, FALSE
, FALSE
, FALSE
);
700 if (sym_hash
&& sym_hash
->root
.type
== bfd_link_hash_common
701 && sym_hash
->root
.u
.c
.p
->alignment_power
< (unsigned) ac
->alignment
)
703 sym_hash
->root
.u
.c
.p
->alignment_power
= (unsigned) ac
->alignment
;
709 /* If we are building an executable and there is nothing
710 to export, we do not build an export table at all. */
711 if (bfd_link_executable (info
) && pe_def_file
->num_exports
== 0
712 && (!pe_dll_export_everything
|| pe_dll_exclude_all_symbols
))
715 /* Now, maybe export everything else the default way. */
716 if ((pe_dll_export_everything
|| pe_def_file
->num_exports
== 0)
717 && !pe_dll_exclude_all_symbols
)
719 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
724 if (!bfd_generic_link_read_symbols (b
))
726 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b
);
730 symbols
= bfd_get_outsymbols (b
);
731 nsyms
= bfd_get_symcount (b
);
733 for (j
= 0; j
< nsyms
; j
++)
735 /* We should export symbols which are either global or not
736 anything at all. (.bss data is the latter)
737 We should not export undefined symbols. */
738 bfd_boolean would_export
739 = (symbols
[j
]->section
!= bfd_und_section_ptr
740 && ((symbols
[j
]->flags
& BSF_GLOBAL
)
741 || (symbols
[j
]->flags
== 0)));
742 if (link_info
.version_info
&& would_export
)
744 = !bfd_hide_sym_by_version (link_info
.version_info
,
748 const char *sn
= symbols
[j
]->name
;
750 /* We should not re-export imported stuff. */
756 name
= xmalloc (strlen ("__imp_") + strlen (sn
) + 1);
757 sprintf (name
, "%s%s", "__imp_", sn
);
759 blhe
= bfd_link_hash_lookup (info
->hash
, name
,
760 FALSE
, FALSE
, FALSE
);
763 if (blhe
&& blhe
->type
== bfd_link_hash_defined
)
767 if (pe_details
->underscored
&& *sn
== '_')
770 if (auto_export (b
, pe_def_file
, sn
))
775 p
= def_file_add_export (pe_def_file
, sn
, 0, -1,
777 /* Fill data flag properly, from dlltool.c. */
779 p
->flag_data
= !(symbols
[j
]->flags
& BSF_FUNCTION
);
787 #define NE pe_def_file->num_exports
789 /* Don't create an empty export table. */
793 resort_needed
= FALSE
;
795 /* Canonicalize the export list. */
798 for (i
= 0; i
< NE
; i
++)
800 /* Check for fastcall/stdcall-decoration, but ignore
801 C++ mangled names. */
802 if (pe_def_file
->exports
[i
].name
[0] != '?'
803 && strchr (pe_def_file
->exports
[i
].name
, '@'))
805 /* This will preserve internal_name, which may have been
806 pointing to the same memory as name, or might not
808 int lead_at
= (*pe_def_file
->exports
[i
].name
== '@');
809 char *tmp
= xstrdup (pe_def_file
->exports
[i
].name
+ lead_at
);
810 char *tmp_at
= strrchr (tmp
, '@');
815 einfo (_("%X%P: cannot export %s: invalid export name\n"),
816 pe_def_file
->exports
[i
].name
);
817 pe_def_file
->exports
[i
].name
= tmp
;
818 resort_needed
= TRUE
;
823 /* Re-sort the exports table as we have possibly changed the order
824 by removing leading @. */
826 qsort (pe_def_file
->exports
, NE
, sizeof (pe_def_file
->exports
[0]),
829 if (pe_dll_stdcall_aliases
)
831 for (i
= 0; i
< NE
; i
++)
833 if (is_import (pe_def_file
->exports
[i
].name
))
836 if (strchr (pe_def_file
->exports
[i
].name
, '@'))
839 int lead_at
= (*pe_def_file
->exports
[i
].name
== '@');
840 char *tmp
= xstrdup (pe_def_file
->exports
[i
].name
+ lead_at
);
842 *(strchr (tmp
, '@')) = 0;
843 if (auto_export (NULL
, pe_def_file
, tmp
))
844 def_file_add_export (pe_def_file
, tmp
,
845 pe_def_file
->exports
[i
].internal_name
,
853 /* Convenience, but watch out for it changing. */
854 e
= pe_def_file
->exports
;
856 for (i
= 0, j
= 0; i
< NE
; i
++)
858 if (i
> 0 && strcmp (e
[i
].name
, e
[i
- 1].name
) == 0)
860 /* This is a duplicate. */
861 if (e
[j
- 1].ordinal
!= -1
862 && e
[i
].ordinal
!= -1
863 && e
[j
- 1].ordinal
!= e
[i
].ordinal
)
865 if (pe_dll_warn_dup_exports
)
866 /* xgettext:c-format */
867 einfo (_("%X%P: error, duplicate EXPORT with ordinals: %s (%d vs %d)\n"),
868 e
[j
- 1].name
, e
[j
- 1].ordinal
, e
[i
].ordinal
);
872 if (pe_dll_warn_dup_exports
)
873 /* xgettext:c-format */
874 einfo (_("%P: warning, duplicate EXPORT: %s\n"),
878 if (e
[i
].ordinal
!= -1)
879 e
[j
- 1].ordinal
= e
[i
].ordinal
;
880 e
[j
- 1].flag_private
|= e
[i
].flag_private
;
881 e
[j
- 1].flag_constant
|= e
[i
].flag_constant
;
882 e
[j
- 1].flag_noname
|= e
[i
].flag_noname
;
883 e
[j
- 1].flag_data
|= e
[i
].flag_data
;
886 if (e
[i
].internal_name
)
887 free (e
[i
].internal_name
);
889 free (e
[i
].its_name
);
898 pe_def_file
->num_exports
= j
; /* == NE */
900 exported_symbol_offsets
= xmalloc (NE
* sizeof (bfd_vma
));
901 exported_symbol_sections
= xmalloc (NE
* sizeof (struct bfd_section
*));
903 memset (exported_symbol_sections
, 0, NE
* sizeof (struct bfd_section
*));
907 count_exported_byname
= 0;
908 count_with_ordinals
= 0;
910 for (i
= 0; i
< NE
; i
++)
912 char *int_name
= pe_def_file
->exports
[i
].internal_name
;
915 /* PR 19803: Make sure that any exported symbol does not get garbage collected. */
916 lang_add_gc_name (int_name
);
918 name
= xmalloc (strlen (int_name
) + 2);
919 if (pe_details
->underscored
&& int_name
[0] != '@')
922 strcpy (name
+ 1, int_name
);
924 /* PR 19803: The alias must be preserved as well. */
925 lang_add_gc_name (xstrdup (name
));
928 strcpy (name
, int_name
);
930 blhe
= bfd_link_hash_lookup (info
->hash
,
935 && (blhe
->type
== bfd_link_hash_defined
936 || (blhe
->type
== bfd_link_hash_common
)))
939 if (!pe_def_file
->exports
[i
].flag_noname
)
940 count_exported_byname
++;
942 /* Only fill in the sections. The actual offsets are computed
943 in fill_exported_offsets() after common symbols are laid
945 if (blhe
->type
== bfd_link_hash_defined
)
946 exported_symbol_sections
[i
] = blhe
->u
.def
.section
;
948 exported_symbol_sections
[i
] = blhe
->u
.c
.p
->section
;
950 if (pe_def_file
->exports
[i
].ordinal
!= -1)
952 if (max_ordinal
< pe_def_file
->exports
[i
].ordinal
)
953 max_ordinal
= pe_def_file
->exports
[i
].ordinal
;
954 if (min_ordinal
> pe_def_file
->exports
[i
].ordinal
)
955 min_ordinal
= pe_def_file
->exports
[i
].ordinal
;
956 count_with_ordinals
++;
959 /* Check for forward exports. These are indicated in DEF files by an
960 export directive of the form NAME1 = MODULE-NAME.EXTERNAL-NAME
961 but we must take care not to be fooled when the user wants to export
962 a symbol that actually really has a dot in it, so we only check
963 for them here, after real defined symbols have already been matched. */
964 else if (strchr (int_name
, '.'))
967 if (!pe_def_file
->exports
[i
].flag_noname
)
968 count_exported_byname
++;
970 pe_def_file
->exports
[i
].flag_forward
= 1;
972 if (pe_def_file
->exports
[i
].ordinal
!= -1)
974 if (max_ordinal
< pe_def_file
->exports
[i
].ordinal
)
975 max_ordinal
= pe_def_file
->exports
[i
].ordinal
;
976 if (min_ordinal
> pe_def_file
->exports
[i
].ordinal
)
977 min_ordinal
= pe_def_file
->exports
[i
].ordinal
;
978 count_with_ordinals
++;
981 else if (blhe
&& blhe
->type
== bfd_link_hash_undefined
)
983 /* xgettext:c-format */
984 einfo (_("%X%P: cannot export %s: symbol not defined\n"),
989 /* xgettext:c-format */
990 einfo (_("%X%P: cannot export %s: symbol wrong type (%d vs %d)\n"),
992 blhe
->type
, bfd_link_hash_defined
);
996 /* xgettext:c-format */
997 einfo (_("%X%P: cannot export %s: symbol not found\n"),
1004 /* Build the bfd that will contain .edata and .reloc sections. */
1007 build_filler_bfd (int include_edata
)
1009 lang_input_statement_type
*filler_file
;
1010 filler_file
= lang_add_input_file ("dll stuff",
1011 lang_input_file_is_fake_enum
,
1013 filler_file
->the_bfd
= filler_bfd
= bfd_create ("dll stuff",
1014 link_info
.output_bfd
);
1015 if (filler_bfd
== NULL
1016 || !bfd_set_arch_mach (filler_bfd
,
1017 bfd_get_arch (link_info
.output_bfd
),
1018 bfd_get_mach (link_info
.output_bfd
)))
1020 einfo (_("%F%P: can not create BFD: %E\n"));
1026 edata_s
= bfd_make_section_old_way (filler_bfd
, ".edata");
1028 || !bfd_set_section_flags (edata_s
, (SEC_HAS_CONTENTS
1034 einfo (_("%X%P: can not create .edata section: %E\n"));
1037 bfd_set_section_size (edata_s
, edata_sz
);
1040 reloc_s
= bfd_make_section_old_way (filler_bfd
, ".reloc");
1042 || !bfd_set_section_flags (reloc_s
, (SEC_HAS_CONTENTS
1048 einfo (_("%X%P: can not create .reloc section: %E\n"));
1052 bfd_set_section_size (reloc_s
, 0);
1054 ldlang_add_file (filler_file
);
1057 /* Gather all the exported symbols and build the .edata section. */
1060 generate_edata (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1062 int i
, next_ordinal
;
1063 int name_table_size
= 0;
1066 /* First, we need to know how many exported symbols there are,
1067 and what the range of ordinals is. */
1068 if (pe_def_file
->name
)
1069 dll_name
= pe_def_file
->name
;
1072 dll_name
= abfd
->filename
;
1074 for (dlnp
= dll_name
; *dlnp
; dlnp
++)
1075 if (*dlnp
== '\\' || *dlnp
== '/' || *dlnp
== ':')
1076 dll_name
= dlnp
+ 1;
1079 if (count_with_ordinals
&& max_ordinal
> count_exported
)
1081 if (min_ordinal
> max_ordinal
- count_exported
+ 1)
1082 min_ordinal
= max_ordinal
- count_exported
+ 1;
1087 max_ordinal
= count_exported
;
1090 export_table_size
= max_ordinal
- min_ordinal
+ 1;
1091 exported_symbols
= xmalloc (export_table_size
* sizeof (int));
1092 for (i
= 0; i
< export_table_size
; i
++)
1093 exported_symbols
[i
] = -1;
1095 /* Now we need to assign ordinals to those that don't have them. */
1096 for (i
= 0; i
< NE
; i
++)
1098 if (exported_symbol_sections
[i
]
1099 || pe_def_file
->exports
[i
].flag_forward
)
1101 if (pe_def_file
->exports
[i
].ordinal
!= -1)
1103 int ei
= pe_def_file
->exports
[i
].ordinal
- min_ordinal
;
1104 int pi
= exported_symbols
[ei
];
1108 /* xgettext:c-format */
1109 einfo (_("%X%P: error: ordinal used twice: %d (%s vs %s)\n"),
1110 pe_def_file
->exports
[i
].ordinal
,
1111 pe_def_file
->exports
[i
].name
,
1112 pe_def_file
->exports
[pi
].name
);
1114 exported_symbols
[ei
] = i
;
1116 if (pe_def_file
->exports
[i
].its_name
)
1117 name_table_size
+= strlen (pe_def_file
->exports
[i
].its_name
) + 1;
1119 name_table_size
+= strlen (pe_def_file
->exports
[i
].name
) + 1;
1122 /* Reserve space for the forward name. */
1123 if (pe_def_file
->exports
[i
].flag_forward
)
1125 name_table_size
+= strlen (pe_def_file
->exports
[i
].internal_name
) + 1;
1129 next_ordinal
= min_ordinal
;
1130 for (i
= 0; i
< NE
; i
++)
1131 if ((exported_symbol_sections
[i
]
1132 || pe_def_file
->exports
[i
].flag_forward
)
1133 && pe_def_file
->exports
[i
].ordinal
== -1)
1135 while (exported_symbols
[next_ordinal
- min_ordinal
] != -1)
1138 exported_symbols
[next_ordinal
- min_ordinal
] = i
;
1139 pe_def_file
->exports
[i
].ordinal
= next_ordinal
;
1142 /* PR 12969: Check for more than 1^16 ordinals. */
1143 if (max_ordinal
> 65535 || next_ordinal
> 65535)
1144 /* xgettext:c-format */
1145 einfo(_("%X%P: error: export ordinal too large: %d\n"),
1146 max_ordinal
> next_ordinal
? max_ordinal
: next_ordinal
);
1148 /* OK, now we can allocate some memory. */
1149 edata_sz
= (40 /* directory */
1150 + 4 * export_table_size
/* addresses */
1151 + 4 * count_exported_byname
/* name ptrs */
1152 + 2 * count_exported_byname
/* ordinals */
1153 + name_table_size
+ strlen (dll_name
) + 1);
1156 /* Fill the exported symbol offsets. The preliminary work has already
1157 been done in process_def_file_and_drectve(). */
1160 fill_exported_offsets (bfd
*abfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
1163 struct bfd_link_hash_entry
*blhe
;
1165 for (i
= 0; i
< pe_def_file
->num_exports
; i
++)
1169 name
= xmalloc (strlen (pe_def_file
->exports
[i
].internal_name
) + 2);
1170 if (pe_details
->underscored
1171 && *pe_def_file
->exports
[i
].internal_name
!= '@')
1174 strcpy (name
+ 1, pe_def_file
->exports
[i
].internal_name
);
1177 strcpy (name
, pe_def_file
->exports
[i
].internal_name
);
1179 blhe
= bfd_link_hash_lookup (info
->hash
,
1181 FALSE
, FALSE
, TRUE
);
1183 if (blhe
&& blhe
->type
== bfd_link_hash_defined
)
1184 exported_symbol_offsets
[i
] = blhe
->u
.def
.value
;
1191 fill_edata (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1194 unsigned char *edirectory
;
1195 unsigned char *eaddresses
;
1196 unsigned char *enameptrs
;
1197 unsigned char *eordinals
;
1200 edata_d
= xmalloc (edata_sz
);
1202 /* Note use of array pointer math here. */
1203 edirectory
= edata_d
;
1204 eaddresses
= edirectory
+ 40;
1205 enameptrs
= eaddresses
+ 4 * export_table_size
;
1206 eordinals
= enameptrs
+ 4 * count_exported_byname
;
1207 enamestr
= (char *) eordinals
+ 2 * count_exported_byname
;
1209 #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \
1210 + edata_s->output_section->vma - image_base)
1212 memset (edata_d
, 0, edata_sz
);
1214 if (pe_data (abfd
)->insert_timestamp
)
1215 H_PUT_32 (abfd
, time (0), edata_d
+ 4);
1217 if (pe_def_file
->version_major
!= -1)
1219 bfd_put_16 (abfd
, pe_def_file
->version_major
, edata_d
+ 8);
1220 bfd_put_16 (abfd
, pe_def_file
->version_minor
, edata_d
+ 10);
1223 bfd_put_32 (abfd
, ERVA (enamestr
), edata_d
+ 12);
1224 strcpy (enamestr
, dll_name
);
1225 enamestr
+= strlen (enamestr
) + 1;
1226 bfd_put_32 (abfd
, min_ordinal
, edata_d
+ 16);
1227 bfd_put_32 (abfd
, export_table_size
, edata_d
+ 20);
1228 bfd_put_32 (abfd
, count_exported_byname
, edata_d
+ 24);
1229 bfd_put_32 (abfd
, ERVA (eaddresses
), edata_d
+ 28);
1230 bfd_put_32 (abfd
, ERVA (enameptrs
), edata_d
+ 32);
1231 bfd_put_32 (abfd
, ERVA (eordinals
), edata_d
+ 36);
1233 fill_exported_offsets (abfd
, info
);
1235 /* Ok, now for the filling in part.
1236 Scan alphabetically - ie the ordering in the exports[] table,
1237 rather than by ordinal - the ordering in the exported_symbol[]
1238 table. See dlltool.c and:
1239 http://sources.redhat.com/ml/binutils/2003-04/msg00379.html
1240 for more information. */
1242 for (s
= 0; s
< NE
; s
++)
1244 struct bfd_section
*ssec
= exported_symbol_sections
[s
];
1245 if (pe_def_file
->exports
[s
].ordinal
!= -1
1246 && (pe_def_file
->exports
[s
].flag_forward
|| ssec
!= NULL
))
1248 int ord
= pe_def_file
->exports
[s
].ordinal
;
1250 if (pe_def_file
->exports
[s
].flag_forward
)
1252 bfd_put_32 (abfd
, ERVA (enamestr
),
1253 eaddresses
+ 4 * (ord
- min_ordinal
));
1255 strcpy (enamestr
, pe_def_file
->exports
[s
].internal_name
);
1256 enamestr
+= strlen (pe_def_file
->exports
[s
].internal_name
) + 1;
1260 bfd_vma srva
= (exported_symbol_offsets
[s
]
1261 + ssec
->output_section
->vma
1262 + ssec
->output_offset
);
1264 bfd_put_32 (abfd
, srva
- image_base
,
1265 eaddresses
+ 4 * (ord
- min_ordinal
));
1268 if (!pe_def_file
->exports
[s
].flag_noname
)
1270 char *ename
= pe_def_file
->exports
[s
].name
;
1271 if (pe_def_file
->exports
[s
].its_name
)
1272 ename
= pe_def_file
->exports
[s
].its_name
;
1274 bfd_put_32 (abfd
, ERVA (enamestr
), enameptrs
);
1276 strcpy (enamestr
, ename
);
1277 enamestr
+= strlen (enamestr
) + 1;
1278 bfd_put_16 (abfd
, ord
- min_ordinal
, eordinals
);
1280 pe_def_file
->exports
[s
].hint
= hint
++;
1287 static struct bfd_section
*current_sec
;
1290 pe_walk_relocs (struct bfd_link_info
*info
,
1292 const char *symname
,
1293 struct bfd_hash_table
*import_hash
,
1294 void (*cb
) (arelent
*, asection
*, char *, const char *))
1299 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
1303 if (!bfd_generic_link_read_symbols (b
))
1305 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b
);
1309 symbols
= bfd_get_outsymbols (b
);
1311 for (s
= b
->sections
; s
; s
= s
->next
)
1314 int relsize
, nrelocs
, i
;
1315 int flags
= bfd_section_flags (s
);
1317 /* Skip discarded linkonce sections. */
1318 if (flags
& SEC_LINK_ONCE
1319 && s
->output_section
== bfd_abs_section_ptr
)
1324 relsize
= bfd_get_reloc_upper_bound (b
, s
);
1325 relocs
= xmalloc (relsize
);
1326 nrelocs
= bfd_canonicalize_reloc (b
, s
, relocs
, symbols
);
1328 for (i
= 0; i
< nrelocs
; i
++)
1330 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1332 /* Warning: the callback needs to be passed NAME directly. */
1335 if (bfd_hash_lookup (import_hash
, sym
->name
, FALSE
, FALSE
))
1337 strcpy (name
, sym
->name
);
1338 cb (relocs
[i
], s
, name
, symname
);
1343 if (strcmp (name
, sym
->name
) == 0)
1344 cb (relocs
[i
], s
, name
, symname
);
1350 /* Warning: the allocated symbols are remembered in BFD and reused
1351 later, so don't free them! */
1352 /* free (symbols); */
1358 pe_find_data_imports (const char *symhead
,
1359 void (*cb
) (arelent
*, asection
*, char *, const char *))
1361 struct bfd_link_hash_entry
*undef
;
1362 const size_t headlen
= strlen (symhead
);
1365 struct bfd_hash_table
*import_hash
;
1367 for (undef
= link_info
.hash
->undefs
; undef
; undef
= undef
->u
.undef
.next
)
1368 if (undef
->type
== bfd_link_hash_undefined
)
1370 size_t len
= strlen (undef
->root
.string
);
1377 /* For the pseudo-relocation support version 2, we can collect the symbols
1378 that are subject to auto-import and adjust the relocations en masse. */
1379 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
1382 = (struct bfd_hash_table
*) xmalloc (sizeof (struct bfd_hash_table
));
1383 if (!bfd_hash_table_init (import_hash
,
1385 sizeof (struct bfd_hash_entry
)))
1386 einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
1391 /* We are being a bit cunning here. The buffer will have space for
1392 prefixes at the beginning. The prefix is modified here and in a
1393 number of functions called from this function. */
1394 #define PREFIX_LEN 32
1395 buf
= xmalloc (PREFIX_LEN
+ namelen
+ 1);
1396 name
= buf
+ PREFIX_LEN
;
1398 for (undef
= link_info
.hash
->undefs
; undef
; undef
= undef
->u
.undef
.next
)
1399 if (undef
->type
== bfd_link_hash_undefined
)
1401 struct bfd_link_hash_entry
*sym
;
1404 if (pe_dll_extra_pe_debug
)
1405 printf ("%s:%s\n", __FUNCTION__
, undef
->root
.string
);
1407 strcpy (name
, undef
->root
.string
);
1408 impname
= name
- (sizeof "__imp_" - 1);
1409 memcpy (impname
, "__imp_", sizeof "__imp_" - 1);
1411 sym
= bfd_link_hash_lookup (link_info
.hash
, impname
, 0, 0, 1);
1413 if (sym
&& sym
->type
== bfd_link_hash_defined
)
1416 bfd_hash_lookup (import_hash
, undef
->root
.string
, TRUE
, FALSE
);
1419 bfd
*b
= sym
->u
.def
.section
->owner
;
1420 const char *symname
= NULL
;
1424 if (!bfd_generic_link_read_symbols (b
))
1426 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b
);
1430 symbols
= bfd_get_outsymbols (b
);
1431 nsyms
= bfd_get_symcount (b
);
1433 for (i
= 0; i
< nsyms
; i
++)
1434 if (strncmp (symbols
[i
]->name
, symhead
, headlen
) == 0)
1436 if (pe_dll_extra_pe_debug
)
1437 printf ("->%s\n", symbols
[i
]->name
);
1439 symname
= symbols
[i
]->name
+ headlen
;
1443 /* If the symobl isn't part of an import table, there is no
1444 point in building a fixup, this would give rise to link
1445 errors for mangled symbols instead of the original one. */
1447 pe_walk_relocs (&link_info
, name
, symname
, NULL
, cb
);
1452 /* Let's differentiate it somehow from defined. */
1453 undef
->type
= bfd_link_hash_defweak
;
1454 undef
->u
.def
.value
= sym
->u
.def
.value
;
1455 undef
->u
.def
.section
= sym
->u
.def
.section
;
1457 /* We replace the original name with the __imp_ prefixed one, this
1458 1) may trash memory 2) leads to duplicate symbols. But this is
1459 better than having a misleading name that can confuse GDB. */
1460 undef
->root
.string
= sym
->root
.string
;
1462 if (link_info
.pei386_auto_import
== -1)
1464 static bfd_boolean warned
= FALSE
;
1466 info_msg (_("Info: resolving %s by linking to %s "
1467 "(auto-import)\n"), name
, impname
);
1469 /* PR linker/4844. */
1472 einfo (_("%P: warning: auto-importing has been activated "
1473 "without --enable-auto-import specified on the "
1474 "command line; this should work unless it "
1475 "involves constant data structures referencing "
1476 "symbols from auto-imported DLLs\n"));
1483 /* If we have the import hash table, walk the relocations only once. */
1486 pe_walk_relocs (&link_info
, name
, NULL
, import_hash
, cb
);
1487 bfd_hash_table_free (import_hash
);
1494 /* Gather all the relocations and build the .reloc section. */
1497 generate_reloc (bfd
*abfd
, struct bfd_link_info
*info
)
1500 /* For .reloc stuff. */
1501 reloc_data_type
*reloc_data
;
1502 int total_relocs
= 0;
1504 bfd_vma sec_page
= (bfd_vma
) -1;
1505 bfd_vma page_ptr
, page_count
;
1508 struct bfd_section
*s
;
1511 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
1512 for (s
= b
->sections
; s
; s
= s
->next
)
1513 total_relocs
+= s
->reloc_count
;
1515 reloc_data
= xmalloc (total_relocs
* sizeof (reloc_data_type
));
1519 for (bi
= 0, b
= info
->input_bfds
; b
; bi
++, b
= b
->link
.next
)
1522 int relsize
, nrelocs
;
1524 for (s
= b
->sections
; s
; s
= s
->next
)
1526 bfd_vma sec_vma
= s
->output_section
->vma
+ s
->output_offset
;
1529 /* If it's not loaded, we don't need to relocate it this way. */
1530 if (!(s
->output_section
->flags
& SEC_LOAD
))
1533 /* I don't know why there would be a reloc for these, but I've
1534 seen it happen - DJ */
1535 if (s
->output_section
== bfd_abs_section_ptr
)
1538 if (s
->output_section
->vma
== 0)
1540 /* Huh? Shouldn't happen, but punt if it does. */
1541 einfo (_("%P: zero vma section reloc detected: `%s' #%d f=%d\n"),
1542 s
->output_section
->name
, s
->output_section
->index
,
1543 s
->output_section
->flags
);
1547 if (!bfd_generic_link_read_symbols (b
))
1549 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b
);
1553 symbols
= bfd_get_outsymbols (b
);
1554 relsize
= bfd_get_reloc_upper_bound (b
, s
);
1555 relocs
= xmalloc (relsize
);
1556 nrelocs
= bfd_canonicalize_reloc (b
, s
, relocs
, symbols
);
1558 for (i
= 0; i
< nrelocs
; i
++)
1560 if (pe_dll_extra_pe_debug
)
1562 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1563 printf ("rel: %s\n", sym
->name
);
1565 if (!relocs
[i
]->howto
->pc_relative
1566 && relocs
[i
]->howto
->type
!= pe_details
->imagebase_reloc
)
1568 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1570 /* Don't create relocs for undefined weak symbols. */
1571 if (sym
->flags
== BSF_WEAK
)
1573 struct bfd_link_hash_entry
*blhe
1574 = bfd_wrapped_link_hash_lookup (abfd
, info
, sym
->name
,
1575 FALSE
, FALSE
, FALSE
);
1576 if (blhe
&& blhe
->type
== bfd_link_hash_undefweak
)
1578 /* Check aux sym and see if it is defined or not. */
1579 struct coff_link_hash_entry
*h
, *h2
;
1580 h
= (struct coff_link_hash_entry
*)blhe
;
1581 if (h
->symbol_class
!= C_NT_WEAK
|| h
->numaux
!= 1)
1583 h2
= h
->auxbfd
->tdata
.coff_obj_data
->sym_hashes
1584 [h
->aux
->x_sym
.x_tagndx
.l
];
1585 /* We don't want a base reloc if the aux sym is not
1586 found, undefined, or if it is the constant ABS
1587 zero default value. (We broaden that slightly by
1588 not testing the value, just the section; there's
1589 no reason we'd want a reference to any absolute
1590 address to get relocated during rebasing). */
1591 if (!h2
|| h2
->root
.type
== bfd_link_hash_undefined
1592 || h2
->root
.u
.def
.section
== bfd_abs_section_ptr
)
1595 else if (!blhe
|| blhe
->type
!= bfd_link_hash_defined
)
1598 /* Nor for Dwarf FDE references to discarded sections. */
1599 else if (bfd_is_abs_section (sym
->section
->output_section
))
1601 /* We only ignore relocs from .eh_frame sections, as
1602 they are discarded by the final link rather than
1603 resolved against the kept section. */
1604 if (!strcmp (s
->name
, ".eh_frame"))
1608 reloc_data
[total_relocs
].vma
= sec_vma
+ relocs
[i
]->address
;
1609 reloc_data
[total_relocs
].idx
= total_relocs
;
1611 #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift)
1613 switch BITS_AND_SHIFT (relocs
[i
]->howto
->bitsize
,
1614 relocs
[i
]->howto
->rightshift
)
1616 #ifdef pe_use_x86_64
1617 case BITS_AND_SHIFT (64, 0):
1618 reloc_data
[total_relocs
].type
= 10;
1622 case BITS_AND_SHIFT (32, 0):
1623 reloc_data
[total_relocs
].type
= 3;
1626 case BITS_AND_SHIFT (16, 0):
1627 reloc_data
[total_relocs
].type
= 2;
1630 case BITS_AND_SHIFT (16, 16):
1631 reloc_data
[total_relocs
].type
= 4;
1632 /* FIXME: we can't know the symbol's right value
1633 yet, but we probably can safely assume that
1634 CE will relocate us in 64k blocks, so leaving
1636 reloc_data
[total_relocs
].extra
= 0;
1639 case BITS_AND_SHIFT (26, 2):
1640 reloc_data
[total_relocs
].type
= 5;
1643 case BITS_AND_SHIFT (24, 2):
1644 /* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c
1645 Those ARM_xxx definitions should go in proper
1647 if (relocs
[i
]->howto
->type
== 0
1648 /* Older GNU linkers used 5 instead of 0 for this reloc. */
1649 || relocs
[i
]->howto
->type
== 5)
1650 /* This is an ARM_26D reloc, which is an ARM_26 reloc
1651 that has already been fully processed during a
1652 previous link stage, so ignore it here. */
1656 /* xgettext:c-format */
1657 einfo (_("%X%P: error: %d-bit reloc in dll\n"),
1658 relocs
[i
]->howto
->bitsize
);
1664 /* Warning: the allocated symbols are remembered in BFD and
1665 reused later, so don't free them! */
1669 /* At this point, we have total_relocs relocation addresses in
1670 reloc_addresses, which are all suitable for the .reloc section.
1671 We must now create the new sections. */
1672 qsort (reloc_data
, total_relocs
, sizeof (*reloc_data
), reloc_sort
);
1674 for (i
= 0; i
< total_relocs
; i
++)
1676 bfd_vma this_page
= (reloc_data
[i
].vma
>> 12);
1678 if (this_page
!= sec_page
)
1680 reloc_sz
= (reloc_sz
+ 3) & ~3; /* 4-byte align. */
1682 sec_page
= this_page
;
1687 if (reloc_data
[i
].type
== 4)
1691 reloc_sz
= (reloc_sz
+ 3) & ~3; /* 4-byte align. */
1692 reloc_d
= xmalloc (reloc_sz
);
1693 sec_page
= (bfd_vma
) -1;
1695 page_ptr
= (bfd_vma
) -1;
1698 for (i
= 0; i
< total_relocs
; i
++)
1700 bfd_vma rva
= reloc_data
[i
].vma
- image_base
;
1701 bfd_vma this_page
= (rva
& ~0xfff);
1703 if (this_page
!= sec_page
)
1705 while (reloc_sz
& 3)
1706 reloc_d
[reloc_sz
++] = 0;
1708 if (page_ptr
!= (bfd_vma
) -1)
1709 bfd_put_32 (abfd
, reloc_sz
- page_ptr
, reloc_d
+ page_ptr
+ 4);
1711 bfd_put_32 (abfd
, this_page
, reloc_d
+ reloc_sz
);
1712 page_ptr
= reloc_sz
;
1714 sec_page
= this_page
;
1718 bfd_put_16 (abfd
, (rva
& 0xfff) + (reloc_data
[i
].type
<< 12),
1719 reloc_d
+ reloc_sz
);
1722 if (reloc_data
[i
].type
== 4)
1724 bfd_put_16 (abfd
, reloc_data
[i
].extra
, reloc_d
+ reloc_sz
);
1731 while (reloc_sz
& 3)
1732 reloc_d
[reloc_sz
++] = 0;
1734 if (page_ptr
!= (bfd_vma
) -1)
1735 bfd_put_32 (abfd
, reloc_sz
- page_ptr
, reloc_d
+ page_ptr
+ 4);
1737 while (reloc_sz
< reloc_s
->size
)
1738 reloc_d
[reloc_sz
++] = 0;
1741 /* Given the exiting def_file structure, print out a .DEF file that
1742 corresponds to it. */
1745 quoteput (char *s
, FILE *f
, int needs_quotes
)
1749 for (cp
= s
; *cp
; cp
++)
1764 if (*s
== '"' || *s
== '\\')
1778 pe_dll_generate_def_file (const char *pe_out_def_filename
)
1781 FILE *out
= fopen (pe_out_def_filename
, "w");
1784 /* xgettext:c-format */
1785 einfo (_("%P: can't open output def file %s\n"),
1786 pe_out_def_filename
);
1790 if (pe_def_file
->name
)
1792 if (pe_def_file
->is_dll
)
1793 fprintf (out
, "LIBRARY ");
1795 fprintf (out
, "NAME ");
1797 quoteput (pe_def_file
->name
, out
, 1);
1799 if (pe_data (link_info
.output_bfd
)->pe_opthdr
.ImageBase
)
1801 fprintf (out
, " BASE=0x");
1802 fprintf_vma (out
, ((bfd_vma
) pe_data (link_info
.output_bfd
)->pe_opthdr
.ImageBase
));
1804 fprintf (out
, "\n");
1807 if (pe_def_file
->description
)
1809 fprintf (out
, "DESCRIPTION ");
1810 quoteput (pe_def_file
->description
, out
, 1);
1811 fprintf (out
, "\n");
1814 if (pe_def_file
->version_minor
!= -1)
1815 fprintf (out
, "VERSION %d.%d\n", pe_def_file
->version_major
,
1816 pe_def_file
->version_minor
);
1817 else if (pe_def_file
->version_major
!= -1)
1818 fprintf (out
, "VERSION %d\n", pe_def_file
->version_major
);
1820 if (pe_def_file
->stack_reserve
!= -1 || pe_def_file
->heap_reserve
!= -1)
1821 fprintf (out
, "\n");
1823 if (pe_def_file
->stack_commit
!= -1)
1824 fprintf (out
, "STACKSIZE 0x%x,0x%x\n",
1825 pe_def_file
->stack_reserve
, pe_def_file
->stack_commit
);
1826 else if (pe_def_file
->stack_reserve
!= -1)
1827 fprintf (out
, "STACKSIZE 0x%x\n", pe_def_file
->stack_reserve
);
1829 if (pe_def_file
->heap_commit
!= -1)
1830 fprintf (out
, "HEAPSIZE 0x%x,0x%x\n",
1831 pe_def_file
->heap_reserve
, pe_def_file
->heap_commit
);
1832 else if (pe_def_file
->heap_reserve
!= -1)
1833 fprintf (out
, "HEAPSIZE 0x%x\n", pe_def_file
->heap_reserve
);
1835 if (pe_def_file
->num_section_defs
> 0)
1837 fprintf (out
, "\nSECTIONS\n\n");
1839 for (i
= 0; i
< pe_def_file
->num_section_defs
; i
++)
1842 quoteput (pe_def_file
->section_defs
[i
].name
, out
, 0);
1844 if (pe_def_file
->section_defs
[i
].class)
1846 fprintf (out
, " CLASS ");
1847 quoteput (pe_def_file
->section_defs
[i
].class, out
, 0);
1850 if (pe_def_file
->section_defs
[i
].flag_read
)
1851 fprintf (out
, " READ");
1853 if (pe_def_file
->section_defs
[i
].flag_write
)
1854 fprintf (out
, " WRITE");
1856 if (pe_def_file
->section_defs
[i
].flag_execute
)
1857 fprintf (out
, " EXECUTE");
1859 if (pe_def_file
->section_defs
[i
].flag_shared
)
1860 fprintf (out
, " SHARED");
1862 fprintf (out
, "\n");
1866 if (pe_def_file
->num_exports
> 0)
1868 fprintf (out
, "EXPORTS\n");
1870 for (i
= 0; i
< pe_def_file
->num_exports
; i
++)
1872 def_file_export
*e
= pe_def_file
->exports
+ i
;
1874 quoteput (e
->name
, out
, 0);
1876 if (e
->internal_name
&& strcmp (e
->internal_name
, e
->name
))
1878 fprintf (out
, " = ");
1879 quoteput (e
->internal_name
, out
, 0);
1882 if (e
->ordinal
!= -1)
1883 fprintf (out
, " @%d", e
->ordinal
);
1885 if (e
->flag_private
)
1886 fprintf (out
, " PRIVATE");
1888 if (e
->flag_constant
)
1889 fprintf (out
, " CONSTANT");
1892 fprintf (out
, " NONAME");
1895 fprintf (out
, " DATA");
1897 fprintf (out
, "\n");
1901 if (pe_def_file
->num_imports
> 0)
1903 fprintf (out
, "\nIMPORTS\n\n");
1905 for (i
= 0; i
< pe_def_file
->num_imports
; i
++)
1907 def_file_import
*im
= pe_def_file
->imports
+ i
;
1910 if (im
->internal_name
1911 && (!im
->name
|| strcmp (im
->internal_name
, im
->name
)))
1913 quoteput (im
->internal_name
, out
, 0);
1914 fprintf (out
, " = ");
1917 quoteput (im
->module
->name
, out
, 0);
1921 quoteput (im
->name
, out
, 0);
1923 fprintf (out
, "%d", im
->ordinal
);
1927 fprintf (out
, " == ");
1928 quoteput (im
->its_name
, out
, 0);
1931 fprintf (out
, "\n");
1936 fprintf (out
, _("; no contents available\n"));
1938 if (fclose (out
) == EOF
)
1939 /* xgettext:c-format */
1940 einfo (_("%P: error closing file `%s'\n"), pe_out_def_filename
);
1943 /* Generate the import library. */
1945 static asymbol
**symtab
;
1948 static const char *dll_filename
;
1949 static char *dll_symname
;
1951 #define UNDSEC bfd_und_section_ptr
1954 quick_section (bfd
*abfd
, const char *name
, int flags
, int align
)
1959 sec
= bfd_make_section_old_way (abfd
, name
);
1960 bfd_set_section_flags (sec
, flags
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
);
1961 bfd_set_section_alignment (sec
, align
);
1962 /* Remember to undo this before trying to link internally! */
1963 sec
->output_section
= sec
;
1965 sym
= bfd_make_empty_symbol (abfd
);
1966 symtab
[symptr
++] = sym
;
1967 sym
->name
= sec
->name
;
1969 sym
->flags
= BSF_LOCAL
;
1976 quick_symbol (bfd
*abfd
,
1985 char *name
= xmalloc (strlen (n1
) + strlen (n2
) + strlen (n3
) + 1);
1990 sym
= bfd_make_empty_symbol (abfd
);
1995 symtab
[symptr
++] = sym
;
1998 static arelent
*reltab
= 0;
1999 static int relcount
= 0, relsize
= 0;
2002 quick_reloc (bfd
*abfd
, bfd_size_type address
, int which_howto
, int symidx
)
2004 if (relcount
>= relsize
- 1)
2008 reltab
= xrealloc (reltab
, relsize
* sizeof (arelent
));
2010 reltab
= xmalloc (relsize
* sizeof (arelent
));
2012 reltab
[relcount
].address
= address
;
2013 reltab
[relcount
].addend
= 0;
2014 reltab
[relcount
].howto
= bfd_reloc_type_lookup (abfd
, which_howto
);
2015 reltab
[relcount
].sym_ptr_ptr
= symtab
+ symidx
;
2020 save_relocs (asection
*sec
)
2024 sec
->relocation
= reltab
;
2025 sec
->reloc_count
= relcount
;
2026 sec
->orelocation
= xmalloc ((relcount
+ 1) * sizeof (arelent
*));
2027 for (i
= 0; i
< relcount
; i
++)
2028 sec
->orelocation
[i
] = sec
->relocation
+ i
;
2029 sec
->orelocation
[relcount
] = 0;
2030 sec
->flags
|= SEC_RELOC
;
2032 relcount
= relsize
= 0;
2035 /* .section .idata$2
2036 .global __head_my_dll
2053 make_head (bfd
*parent
)
2055 asection
*id2
, *id5
, *id4
;
2056 unsigned char *d2
, *d5
, *d4
;
2060 oname
= xmalloc (20);
2061 sprintf (oname
, "d%06d.o", tmp_seq
);
2064 abfd
= bfd_create (oname
, parent
);
2065 bfd_find_target (pe_details
->object_target
, abfd
);
2066 bfd_make_writable (abfd
);
2068 bfd_set_format (abfd
, bfd_object
);
2069 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2072 symtab
= xmalloc (6 * sizeof (asymbol
*));
2073 id2
= quick_section (abfd
, ".idata$2", SEC_HAS_CONTENTS
, 2);
2074 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
2075 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2076 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", id2
, BSF_GLOBAL
, 0);
2077 quick_symbol (abfd
, U (""), dll_symname
, "_iname", UNDSEC
, BSF_GLOBAL
, 0);
2079 /* OK, pay attention here. I got confused myself looking back at
2080 it. We create a four-byte section to mark the beginning of the
2081 list, and we include an offset of 4 in the section, so that the
2082 pointer to the list points to the *end* of this section, which is
2083 the start of the list of sections from other objects. */
2085 bfd_set_section_size (id2
, 20);
2089 if (pe_use_nul_prefixed_import_tables
)
2090 d2
[0] = d2
[16] = PE_IDATA5_SIZE
; /* Reloc addend. */
2091 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 2);
2092 quick_reloc (abfd
, 12, BFD_RELOC_RVA
, 4);
2093 quick_reloc (abfd
, 16, BFD_RELOC_RVA
, 1);
2096 if (pe_use_nul_prefixed_import_tables
)
2097 bfd_set_section_size (id5
, PE_IDATA5_SIZE
);
2099 bfd_set_section_size (id5
, 0);
2100 d5
= xmalloc (PE_IDATA5_SIZE
);
2102 memset (d5
, 0, PE_IDATA5_SIZE
);
2103 if (pe_use_nul_prefixed_import_tables
)
2104 bfd_set_section_size (id4
, PE_IDATA4_SIZE
);
2106 bfd_set_section_size (id4
, 0);
2107 d4
= xmalloc (PE_IDATA4_SIZE
);
2109 memset (d4
, 0, PE_IDATA4_SIZE
);
2111 bfd_set_symtab (abfd
, symtab
, symptr
);
2113 bfd_set_section_contents (abfd
, id2
, d2
, 0, 20);
2114 if (pe_use_nul_prefixed_import_tables
)
2116 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
2117 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
2121 bfd_set_section_contents (abfd
, id5
, d5
, 0, 0);
2122 bfd_set_section_contents (abfd
, id4
, d4
, 0, 0);
2125 bfd_make_readable (abfd
);
2129 /* .section .idata$4
2136 .global __my_dll_iname
2141 make_tail (bfd
*parent
)
2143 asection
*id4
, *id5
, *id7
;
2144 unsigned char *d4
, *d5
, *d7
;
2149 oname
= xmalloc (20);
2150 sprintf (oname
, "d%06d.o", tmp_seq
);
2153 abfd
= bfd_create (oname
, parent
);
2154 bfd_find_target (pe_details
->object_target
, abfd
);
2155 bfd_make_writable (abfd
);
2157 bfd_set_format (abfd
, bfd_object
);
2158 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2161 symtab
= xmalloc (5 * sizeof (asymbol
*));
2162 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2163 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
2164 id7
= quick_section (abfd
, ".idata$7", SEC_HAS_CONTENTS
, 2);
2165 quick_symbol (abfd
, U (""), dll_symname
, "_iname", id7
, BSF_GLOBAL
, 0);
2167 bfd_set_section_size (id4
, PE_IDATA4_SIZE
);
2168 d4
= xmalloc (PE_IDATA4_SIZE
);
2170 memset (d4
, 0, PE_IDATA4_SIZE
);
2172 bfd_set_section_size (id5
, PE_IDATA5_SIZE
);
2173 d5
= xmalloc (PE_IDATA5_SIZE
);
2175 memset (d5
, 0, PE_IDATA5_SIZE
);
2177 len
= strlen (dll_filename
) + 1;
2180 bfd_set_section_size (id7
, len
);
2183 strcpy ((char *) d7
, dll_filename
);
2184 /* If len was odd, the above
2185 strcpy leaves behind an undefined byte. That is harmless,
2186 but we set it to 0 just so the binary dumps are pretty. */
2189 bfd_set_symtab (abfd
, symtab
, symptr
);
2191 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
2192 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
2193 bfd_set_section_contents (abfd
, id7
, d7
, 0, len
);
2195 bfd_make_readable (abfd
);
2201 .global ___imp_function
2202 .global __imp__function
2204 jmp *__imp__function:
2218 .asciz "function" xlate? (add underscore, kill at) */
2220 static const unsigned char jmp_ix86_bytes
[] =
2222 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
2230 .dw __imp_function */
2232 static const unsigned char jmp_sh_bytes
[] =
2234 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
2238 lui $t0,<high:__imp_function>
2239 lw $t0,<low:__imp_function>
2243 static const unsigned char jmp_mips_bytes
[] =
2245 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
2246 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
2249 static const unsigned char jmp_arm_bytes
[] =
2251 0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */
2252 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */
2258 make_one (def_file_export
*exp
, bfd
*parent
, bfd_boolean include_jmp_stub
)
2260 asection
*tx
, *id7
, *id5
, *id4
, *id6
;
2261 unsigned char *td
= NULL
, *d7
, *d5
, *d4
, *d6
= NULL
;
2265 const unsigned char *jmp_bytes
= NULL
;
2266 int jmp_byte_count
= 0;
2268 /* Include the jump stub section only if it is needed. A jump
2269 stub is needed if the symbol being imported <sym> is a function
2270 symbol and there is at least one undefined reference to that
2271 symbol. In other words, if all the import references to <sym> are
2272 explicitly through _declspec(dllimport) then the jump stub is not
2274 if (include_jmp_stub
)
2276 switch (pe_details
->pe_arch
)
2279 jmp_bytes
= jmp_ix86_bytes
;
2280 jmp_byte_count
= sizeof (jmp_ix86_bytes
);
2283 jmp_bytes
= jmp_sh_bytes
;
2284 jmp_byte_count
= sizeof (jmp_sh_bytes
);
2287 jmp_bytes
= jmp_mips_bytes
;
2288 jmp_byte_count
= sizeof (jmp_mips_bytes
);
2291 case PE_ARCH_arm_wince
:
2292 jmp_bytes
= jmp_arm_bytes
;
2293 jmp_byte_count
= sizeof (jmp_arm_bytes
);
2300 oname
= xmalloc (20);
2301 sprintf (oname
, "d%06d.o", tmp_seq
);
2304 abfd
= bfd_create (oname
, parent
);
2305 bfd_find_target (pe_details
->object_target
, abfd
);
2306 bfd_make_writable (abfd
);
2308 bfd_set_format (abfd
, bfd_object
);
2309 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2312 symtab
= xmalloc (12 * sizeof (asymbol
*));
2314 tx
= quick_section (abfd
, ".text", SEC_CODE
| SEC_HAS_CONTENTS
| SEC_READONLY
, 2);
2315 id7
= quick_section (abfd
, ".idata$7", SEC_HAS_CONTENTS
, 2);
2316 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
2317 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2318 id6
= quick_section (abfd
, ".idata$6", SEC_HAS_CONTENTS
, 2);
2320 if (*exp
->internal_name
== '@')
2322 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", UNDSEC
,
2324 if (include_jmp_stub
)
2325 quick_symbol (abfd
, "", exp
->internal_name
, "", tx
, BSF_GLOBAL
, 0);
2326 quick_symbol (abfd
, "__imp_", exp
->internal_name
, "", id5
,
2328 /* Fastcall applies only to functions,
2329 so no need for auto-import symbol. */
2333 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", UNDSEC
,
2335 if (include_jmp_stub
)
2336 quick_symbol (abfd
, U (""), exp
->internal_name
, "", tx
,
2338 quick_symbol (abfd
, "__imp_", U (""), exp
->internal_name
, id5
,
2340 /* Symbol to reference ord/name of imported
2341 data symbol, used to implement auto-import. */
2343 quick_symbol (abfd
, "__nm_", U (""), exp
->internal_name
, id6
,
2346 if (pe_dll_compat_implib
)
2347 quick_symbol (abfd
, "___imp_", exp
->internal_name
, "", id5
,
2350 if (include_jmp_stub
)
2352 bfd_set_section_size (tx
, jmp_byte_count
);
2353 td
= xmalloc (jmp_byte_count
);
2355 memcpy (td
, jmp_bytes
, jmp_byte_count
);
2357 switch (pe_details
->pe_arch
)
2360 #ifdef pe_use_x86_64
2361 quick_reloc (abfd
, 2, BFD_RELOC_32_PCREL
, 2);
2363 /* Mark this object as SAFESEH compatible. */
2364 quick_symbol (abfd
, "", "@feat.00", "", bfd_abs_section_ptr
,
2366 quick_reloc (abfd
, 2, BFD_RELOC_32
, 2);
2370 quick_reloc (abfd
, 8, BFD_RELOC_32
, 2);
2373 quick_reloc (abfd
, 0, BFD_RELOC_HI16_S
, 2);
2374 quick_reloc (abfd
, 0, BFD_RELOC_LO16
, 0); /* MIPS_R_PAIR */
2375 quick_reloc (abfd
, 4, BFD_RELOC_LO16
, 2);
2378 case PE_ARCH_arm_wince
:
2379 quick_reloc (abfd
, 8, BFD_RELOC_32
, 2);
2387 bfd_set_section_size (tx
, 0);
2389 bfd_set_section_size (id7
, 4);
2393 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 5);
2396 bfd_set_section_size (id5
, PE_IDATA5_SIZE
);
2397 d5
= xmalloc (PE_IDATA5_SIZE
);
2399 memset (d5
, 0, PE_IDATA5_SIZE
);
2401 if (exp
->flag_noname
)
2403 d5
[0] = exp
->ordinal
;
2404 d5
[1] = exp
->ordinal
>> 8;
2405 d5
[PE_IDATA5_SIZE
- 1] = 0x80;
2409 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 4);
2413 bfd_set_section_size (id4
, PE_IDATA4_SIZE
);
2414 d4
= xmalloc (PE_IDATA4_SIZE
);
2416 memset (d4
, 0, PE_IDATA4_SIZE
);
2418 if (exp
->flag_noname
)
2420 d4
[0] = exp
->ordinal
;
2421 d4
[1] = exp
->ordinal
>> 8;
2422 d4
[PE_IDATA4_SIZE
- 1] = 0x80;
2426 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 4);
2430 if (exp
->flag_noname
)
2433 bfd_set_section_size (id6
, 0);
2439 /* { short, asciz } */
2441 len
= 2 + strlen (exp
->its_name
) + 1;
2443 len
= 2 + strlen (exp
->name
) + 1;
2446 bfd_set_section_size (id6
, len
);
2449 memset (d6
, 0, len
);
2451 /* PR 20880: Use exp->hint as a backup, just in case exp->ordinal
2452 contains an invalid value (-1). */
2453 ord
= (exp
->ordinal
>= 0) ? exp
->ordinal
: exp
->hint
;
2458 strcpy ((char*) d6
+ 2, exp
->its_name
);
2460 strcpy ((char *) d6
+ 2, exp
->name
);
2463 bfd_set_symtab (abfd
, symtab
, symptr
);
2465 if (include_jmp_stub
)
2466 bfd_set_section_contents (abfd
, tx
, td
, 0, jmp_byte_count
);
2467 bfd_set_section_contents (abfd
, id7
, d7
, 0, 4);
2468 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
2469 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
2470 if (!exp
->flag_noname
)
2471 bfd_set_section_contents (abfd
, id6
, d6
, 0, len
);
2473 bfd_make_readable (abfd
);
2478 make_singleton_name_thunk (const char *import
, bfd
*parent
)
2480 /* Name thunks go to idata$4. */
2486 oname
= xmalloc (20);
2487 sprintf (oname
, "nmth%06d.o", tmp_seq
);
2490 abfd
= bfd_create (oname
, parent
);
2491 bfd_find_target (pe_details
->object_target
, abfd
);
2492 bfd_make_writable (abfd
);
2494 bfd_set_format (abfd
, bfd_object
);
2495 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2498 symtab
= xmalloc (3 * sizeof (asymbol
*));
2499 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2500 quick_symbol (abfd
, "__nm_thnk_", import
, "", id4
, BSF_GLOBAL
, 0);
2501 quick_symbol (abfd
, "__nm_", import
, "", UNDSEC
, BSF_GLOBAL
, 0);
2503 /* We need space for the real thunk and for the null terminator. */
2504 bfd_set_section_size (id4
, PE_IDATA4_SIZE
* 2);
2505 d4
= xmalloc (PE_IDATA4_SIZE
* 2);
2507 memset (d4
, 0, PE_IDATA4_SIZE
* 2);
2508 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 2);
2511 bfd_set_symtab (abfd
, symtab
, symptr
);
2513 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
* 2);
2515 bfd_make_readable (abfd
);
2520 make_import_fixup_mark (arelent
*rel
, char *name
)
2522 /* We convert reloc to symbol, for later reference. */
2523 static unsigned int counter
;
2524 struct bfd_symbol
*sym
= *rel
->sym_ptr_ptr
;
2525 bfd
*abfd
= bfd_asymbol_bfd (sym
);
2526 struct bfd_link_hash_entry
*bh
;
2527 char *fixup_name
, buf
[26];
2530 /* "name" buffer has space before the symbol name for prefixes. */
2531 sprintf (buf
, "__fu%d_", counter
++);
2532 prefix_len
= strlen (buf
);
2533 fixup_name
= name
- prefix_len
;
2534 memcpy (fixup_name
, buf
, prefix_len
);
2537 bfd_coff_link_add_one_symbol (&link_info
, abfd
, fixup_name
, BSF_GLOBAL
,
2538 current_sec
, /* sym->section, */
2539 rel
->address
, NULL
, TRUE
, FALSE
, &bh
);
2541 return bh
->root
.string
;
2544 /* .section .idata$2
2545 .rva __nm_thnk_SYM (singleton thunk with name of func)
2548 .rva __my_dll_iname (name of dll)
2549 .rva __fuNN_SYM (pointer to reference (address) in text) */
2552 make_import_fixup_entry (const char *name
,
2553 const char *fixup_name
,
2554 const char *symname
,
2562 oname
= xmalloc (20);
2563 sprintf (oname
, "fu%06d.o", tmp_seq
);
2566 abfd
= bfd_create (oname
, parent
);
2567 bfd_find_target (pe_details
->object_target
, abfd
);
2568 bfd_make_writable (abfd
);
2570 bfd_set_format (abfd
, bfd_object
);
2571 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2574 symtab
= xmalloc (6 * sizeof (asymbol
*));
2575 id2
= quick_section (abfd
, ".idata$2", SEC_HAS_CONTENTS
, 2);
2577 quick_symbol (abfd
, "__nm_thnk_", name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2578 quick_symbol (abfd
, U (""), symname
, "_iname", UNDSEC
, BSF_GLOBAL
, 0);
2579 quick_symbol (abfd
, "", fixup_name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2581 bfd_set_section_size (id2
, 20);
2586 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 1);
2587 quick_reloc (abfd
, 12, BFD_RELOC_RVA
, 2);
2588 quick_reloc (abfd
, 16, BFD_RELOC_RVA
, 3);
2591 bfd_set_symtab (abfd
, symtab
, symptr
);
2593 bfd_set_section_contents (abfd
, id2
, d2
, 0, 20);
2595 bfd_make_readable (abfd
);
2599 /* .section .rdata_runtime_pseudo_reloc
2601 .rva __fuNN_SYM (pointer to reference (address) in text) */
2604 make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED
,
2605 const char *fixup_name
,
2606 bfd_vma addend ATTRIBUTE_UNUSED
,
2611 unsigned char *rt_rel_d
;
2616 oname
= xmalloc (20);
2617 sprintf (oname
, "rtr%06d.o", tmp_seq
);
2620 abfd
= bfd_create (oname
, parent
);
2621 bfd_find_target (pe_details
->object_target
, abfd
);
2622 bfd_make_writable (abfd
);
2624 bfd_set_format (abfd
, bfd_object
);
2625 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2627 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2629 if (runtime_pseudp_reloc_v2_init
)
2630 size
= 3 * sizeof (asymbol
*);
2632 size
= 6 * sizeof (asymbol
*);
2635 size
= 2 * sizeof (asymbol
*);
2638 symtab
= xmalloc (size
);
2641 = quick_section (abfd
, ".rdata_runtime_pseudo_reloc", SEC_HAS_CONTENTS
, 2);
2643 quick_symbol (abfd
, "", fixup_name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2645 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2648 if (!runtime_pseudp_reloc_v2_init
)
2651 runtime_pseudp_reloc_v2_init
= TRUE
;
2654 quick_symbol (abfd
, "__imp_", name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2656 bfd_set_section_size (rt_rel
, size
);
2657 rt_rel_d
= xmalloc (size
);
2658 rt_rel
->contents
= rt_rel_d
;
2659 memset (rt_rel_d
, 0, size
);
2660 quick_reloc (abfd
, size
- 8, BFD_RELOC_RVA
, 1);
2661 quick_reloc (abfd
, size
- 12, BFD_RELOC_RVA
, 2);
2662 bfd_put_32 (abfd
, bitsize
, rt_rel_d
+ (size
- 4));
2664 bfd_put_32 (abfd
, 1, rt_rel_d
+ 8);
2665 save_relocs (rt_rel
);
2667 bfd_set_symtab (abfd
, symtab
, symptr
);
2669 bfd_set_section_contents (abfd
, rt_rel
, rt_rel_d
, 0, size
);
2673 bfd_set_section_size (rt_rel
, 8);
2674 rt_rel_d
= xmalloc (8);
2675 rt_rel
->contents
= rt_rel_d
;
2676 memset (rt_rel_d
, 0, 8);
2678 bfd_put_32 (abfd
, addend
, rt_rel_d
);
2679 quick_reloc (abfd
, 4, BFD_RELOC_RVA
, 1);
2681 save_relocs (rt_rel
);
2683 bfd_set_symtab (abfd
, symtab
, symptr
);
2685 bfd_set_section_contents (abfd
, rt_rel
, rt_rel_d
, 0, 8);
2688 bfd_make_readable (abfd
);
2693 .rva __pei386_runtime_relocator */
2696 pe_create_runtime_relocator_reference (bfd
*parent
)
2698 asection
*extern_rt_rel
;
2699 unsigned char *extern_rt_rel_d
;
2703 oname
= xmalloc (20);
2704 sprintf (oname
, "ertr%06d.o", tmp_seq
);
2707 abfd
= bfd_create (oname
, parent
);
2708 bfd_find_target (pe_details
->object_target
, abfd
);
2709 bfd_make_writable (abfd
);
2711 bfd_set_format (abfd
, bfd_object
);
2712 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2715 symtab
= xmalloc (2 * sizeof (asymbol
*));
2716 extern_rt_rel
= quick_section (abfd
, ".rdata", SEC_HAS_CONTENTS
, 2);
2718 quick_symbol (abfd
, "", U ("_pei386_runtime_relocator"), "", UNDSEC
,
2721 bfd_set_section_size (extern_rt_rel
, PE_IDATA5_SIZE
);
2722 extern_rt_rel_d
= xcalloc (1, PE_IDATA5_SIZE
);
2723 extern_rt_rel
->contents
= extern_rt_rel_d
;
2725 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 1);
2726 save_relocs (extern_rt_rel
);
2728 bfd_set_symtab (abfd
, symtab
, symptr
);
2730 bfd_set_section_contents (abfd
, extern_rt_rel
, extern_rt_rel_d
, 0, PE_IDATA5_SIZE
);
2732 bfd_make_readable (abfd
);
2737 pe_create_import_fixup (arelent
*rel
, asection
*s
, bfd_vma addend
, char *name
,
2738 const char *symname
)
2740 const char *fixup_name
= make_import_fixup_mark (rel
, name
);
2743 /* This is the original implementation of the auto-import feature, which
2744 primarily relied on the OS loader to patch things up with some help
2745 from the pseudo-relocator to overcome the main limitation. See the
2746 comment at the beginning of the file for an overview of the feature. */
2747 if (link_info
.pei386_runtime_pseudo_reloc
!= 2)
2749 struct bfd_link_hash_entry
*name_thunk_sym
;
2750 /* name buffer is allocated with space at beginning for prefixes. */
2751 char *thname
= name
- (sizeof "__nm_thnk_" - 1);
2752 memcpy (thname
, "__nm_thnk_", sizeof "__nm_thnk_" - 1);
2753 name_thunk_sym
= bfd_link_hash_lookup (link_info
.hash
, thname
, 0, 0, 1);
2755 if (!(name_thunk_sym
&& name_thunk_sym
->type
== bfd_link_hash_defined
))
2757 b
= make_singleton_name_thunk (name
, link_info
.output_bfd
);
2758 add_bfd_to_link (b
, b
->filename
, &link_info
);
2760 /* If we ever use autoimport, we have to cast text section writable. */
2761 config
.text_read_only
= FALSE
;
2762 link_info
.output_bfd
->flags
&= ~WP_TEXT
;
2765 if (addend
== 0 || link_info
.pei386_runtime_pseudo_reloc
== 1)
2767 b
= make_import_fixup_entry (name
, fixup_name
, symname
,
2768 link_info
.output_bfd
);
2769 add_bfd_to_link (b
, b
->filename
, &link_info
);
2773 /* In the original implementation, the pseudo-relocator was only used when
2774 the addend was not null. In the new implementation, the OS loader is
2775 completely bypassed and the pseudo-relocator does the entire work. */
2776 if ((addend
!= 0 && link_info
.pei386_runtime_pseudo_reloc
== 1)
2777 || link_info
.pei386_runtime_pseudo_reloc
== 2)
2779 if (pe_dll_extra_pe_debug
)
2780 printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n",
2781 fixup_name
, (int) addend
);
2783 b
= make_runtime_pseudo_reloc (name
, fixup_name
, addend
, rel
->howto
->bitsize
,
2784 link_info
.output_bfd
);
2785 add_bfd_to_link (b
, b
->filename
, &link_info
);
2787 if (runtime_pseudo_relocs_created
++ == 0)
2789 b
= pe_create_runtime_relocator_reference (link_info
.output_bfd
);
2790 add_bfd_to_link (b
, b
->filename
, &link_info
);
2794 else if (addend
!= 0)
2795 einfo (_("%X%P: %C: variable '%pT' can't be auto-imported; please read the documentation for ld's --enable-auto-import for details\n"),
2796 s
->owner
, s
, rel
->address
, (*rel
->sym_ptr_ptr
)->name
);
2800 pe_dll_generate_implib (def_file
*def
, const char *impfilename
, struct bfd_link_info
*info
)
2809 dll_filename
= (def
->name
) ? def
->name
: dll_name
;
2810 dll_symname
= xstrdup (dll_filename
);
2811 for (i
= 0; dll_symname
[i
]; i
++)
2812 if (!ISALNUM (dll_symname
[i
]))
2813 dll_symname
[i
] = '_';
2815 unlink_if_ordinary (impfilename
);
2817 outarch
= bfd_openw (impfilename
, 0);
2821 /* xgettext:c-format */
2822 einfo (_("%X%P: can't open .lib file: %s\n"), impfilename
);
2827 /* xgettext:c-format */
2828 info_msg (_("Creating library file: %s\n"), impfilename
);
2830 bfd_set_format (outarch
, bfd_archive
);
2831 outarch
->has_armap
= 1;
2833 /* Work out a reasonable size of things to put onto one line. */
2834 ar_head
= make_head (outarch
);
2836 /* Iterate the input BFDs, looking for exclude-modules-for-implib. */
2837 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2839 /* Iterate the exclude list. */
2840 struct exclude_list_struct
*ex
;
2842 for (ex
= excludes
, found
= 0; ex
&& !found
; ex
= ex
->next
)
2844 if (ex
->type
!= EXCLUDEFORIMPLIB
)
2846 found
= (filename_cmp (ex
->string
, ibfd
->filename
) == 0);
2848 /* If it matched, we must open a fresh BFD for it (the original
2849 input BFD is still needed for the DLL's final link) and add
2850 it into the archive member chain. */
2853 bfd
*newbfd
= bfd_openr (ibfd
->my_archive
2854 ? ibfd
->my_archive
->filename
: ibfd
->filename
, NULL
);
2857 einfo (_("%X%P: bfd_openr %s: %E\n"), ibfd
->filename
);
2860 if (ibfd
->my_archive
)
2862 /* Must now iterate through archive until we find the
2863 required member. A minor shame that we'll open the
2864 archive once per member that we require from it, and
2865 leak those archive bfds rather than reuse them. */
2866 bfd
*arbfd
= newbfd
;
2867 if (!bfd_check_format_matches (arbfd
, bfd_archive
, NULL
))
2869 einfo (_("%X%P: %s(%s): can't find member in non-archive file"),
2870 ibfd
->my_archive
->filename
, ibfd
->filename
);
2874 while ((newbfd
= bfd_openr_next_archived_file (arbfd
, newbfd
)) != 0)
2876 if (filename_cmp (newbfd
->filename
, ibfd
->filename
) == 0)
2881 einfo (_("%X%P: %s(%s): can't find member in archive"),
2882 ibfd
->my_archive
->filename
, ibfd
->filename
);
2886 newbfd
->archive_next
= head
;
2891 for (i
= 0; i
< def
->num_exports
; i
++)
2893 /* The import library doesn't know about the internal name. */
2894 char *internal
= def
->exports
[i
].internal_name
;
2897 /* Don't add PRIVATE entries to import lib. */
2898 if (pe_def_file
->exports
[i
].flag_private
)
2901 def
->exports
[i
].internal_name
= def
->exports
[i
].name
;
2903 /* PR 19803: If a symbol has been discard due to garbage
2904 collection then do not create any exports for it. */
2906 struct coff_link_hash_entry
*h
;
2908 h
= coff_link_hash_lookup (coff_hash_table (info
), internal
,
2909 FALSE
, FALSE
, FALSE
);
2911 /* If the symbol is hidden and undefined then it
2912 has been swept up by garbage collection. */
2913 && h
->symbol_class
== C_HIDDEN
2914 && h
->root
.u
.def
.section
== bfd_und_section_ptr
)
2917 /* If necessary, check with an underscore prefix as well. */
2918 if (pe_details
->underscored
&& internal
[0] != '@')
2922 name
= xmalloc (strlen (internal
) + 2);
2923 sprintf (name
, "_%s", internal
);
2925 h
= coff_link_hash_lookup (coff_hash_table (info
), name
,
2926 FALSE
, FALSE
, FALSE
);
2930 /* If the symbol is hidden and undefined then it
2931 has been swept up by garbage collection. */
2932 && h
->symbol_class
== C_HIDDEN
2933 && h
->root
.u
.def
.section
== bfd_und_section_ptr
)
2938 n
= make_one (def
->exports
+ i
, outarch
,
2939 ! (def
->exports
+ i
)->flag_data
);
2940 n
->archive_next
= head
;
2942 def
->exports
[i
].internal_name
= internal
;
2945 ar_tail
= make_tail (outarch
);
2947 if (ar_head
== NULL
|| ar_tail
== NULL
)
2950 /* Now stick them all into the archive. */
2951 ar_head
->archive_next
= head
;
2952 ar_tail
->archive_next
= ar_head
;
2955 if (! bfd_set_archive_head (outarch
, head
))
2956 einfo ("%X%P: bfd_set_archive_head: %E\n");
2958 if (! bfd_close (outarch
))
2959 einfo ("%X%P: bfd_close %s: %E\n", impfilename
);
2961 while (head
!= NULL
)
2963 bfd
*n
= head
->archive_next
;
2969 static int undef_count
= 0;
2977 static struct key_value
*udef_table
;
2979 static int undef_sort_cmp (const void *l1
, const void *r1
)
2981 const struct key_value
*l
= l1
;
2982 const struct key_value
*r
= r1
;
2984 return strcmp (l
->key
, r
->key
);
2987 static struct bfd_link_hash_entry
*
2988 pe_find_cdecl_alias_match (struct bfd_link_info
*linfo
, char *name
)
2990 struct bfd_link_hash_entry
*h
= NULL
;
2991 struct key_value
*kv
;
2992 struct key_value key
;
2993 char *at
, *lname
= xmalloc (strlen (name
) + 3);
2995 strcpy (lname
, name
);
2997 at
= strchr (lname
+ (lname
[0] == '@'), '@');
3002 kv
= bsearch (&key
, udef_table
, undef_count
, sizeof (struct key_value
),
3007 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
3008 if (h
->type
== bfd_link_hash_undefined
)
3012 if (lname
[0] == '?')
3015 if (at
|| lname
[0] == '@')
3017 if (lname
[0] == '@')
3019 if (pe_details
->underscored
)
3022 strcpy (lname
, lname
+ 1);
3024 kv
= bsearch (&key
, udef_table
, undef_count
,
3025 sizeof (struct key_value
), undef_sort_cmp
);
3028 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
3029 if (h
->type
== bfd_link_hash_undefined
)
3034 *strchr (lname
, '@') = 0;
3036 kv
= bsearch (&key
, udef_table
, undef_count
,
3037 sizeof (struct key_value
), undef_sort_cmp
);
3040 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
3041 if (h
->type
== bfd_link_hash_undefined
)
3047 strcat (lname
, "@");
3049 kv
= bsearch (&key
, udef_table
, undef_count
,
3050 sizeof (struct key_value
), undef_sort_cmp
);
3054 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
3055 if (h
->type
== bfd_link_hash_undefined
)
3059 if (lname
[0] == '_' && pe_details
->underscored
)
3063 memmove (lname
+ 1, lname
, strlen (lname
) + 1);
3068 kv
= bsearch (&key
, udef_table
, undef_count
,
3069 sizeof (struct key_value
), undef_sort_cmp
);
3073 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
3074 if (h
->type
== bfd_link_hash_undefined
)
3086 pe_undef_count (struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
3087 void *inf ATTRIBUTE_UNUSED
)
3089 if (h
->type
== bfd_link_hash_undefined
)
3095 pe_undef_fill (struct bfd_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
3097 if (h
->type
== bfd_link_hash_undefined
)
3101 udef_table
[undef_count
].key
= xstrdup (h
->root
.string
);
3102 at
= strchr (udef_table
[undef_count
].key
3103 + (udef_table
[undef_count
].key
[0] == '@'), '@');
3106 udef_table
[undef_count
].oname
= h
->root
.string
;
3113 pe_create_undef_table (void)
3117 /* count undefined symbols */
3119 bfd_link_hash_traverse (link_info
.hash
, pe_undef_count
, "");
3121 /* create and fill the corresponding table */
3122 udef_table
= xmalloc (undef_count
* sizeof (struct key_value
));
3125 bfd_link_hash_traverse (link_info
.hash
, pe_undef_fill
, "");
3128 qsort (udef_table
, undef_count
, sizeof (struct key_value
), undef_sort_cmp
);
3132 add_bfd_to_link (bfd
*abfd
, const char *name
, struct bfd_link_info
*linfo
)
3134 lang_input_statement_type
*fake_file
;
3136 fake_file
= lang_add_input_file (name
,
3137 lang_input_file_is_fake_enum
,
3139 fake_file
->the_bfd
= abfd
;
3140 ldlang_add_file (fake_file
);
3142 if (!bfd_link_add_symbols (abfd
, linfo
))
3143 einfo (_("%X%P: add symbols %s: %E\n"), name
);
3147 pe_process_import_defs (bfd
*output_bfd
, struct bfd_link_info
*linfo
)
3150 def_file_module
*module
;
3151 def_file_import
*imp
;
3153 pe_dll_id_target (bfd_get_target (output_bfd
));
3158 imp
= pe_def_file
->imports
;
3160 pe_create_undef_table ();
3162 for (module
= pe_def_file
->modules
; module
; module
= module
->next
)
3164 int do_this_dll
= 0;
3166 for (i
= 0; i
< pe_def_file
->num_imports
&& imp
[i
].module
!= module
; i
++)
3168 if (i
>= pe_def_file
->num_imports
)
3171 dll_filename
= module
->name
;
3172 dll_symname
= xstrdup (module
->name
);
3173 for (j
= 0; dll_symname
[j
]; j
++)
3174 if (!ISALNUM (dll_symname
[j
]))
3175 dll_symname
[j
] = '_';
3177 for (; i
< pe_def_file
->num_imports
&& imp
[i
].module
== module
; i
++)
3179 def_file_export exp
;
3180 struct bfd_link_hash_entry
*blhe
;
3181 int lead_at
= (*imp
[i
].internal_name
== '@');
3182 /* See if we need this import. */
3183 size_t len
= strlen (imp
[i
].internal_name
);
3184 char *name
= xmalloc (len
+ 2 + 6);
3185 bfd_boolean include_jmp_stub
= FALSE
;
3186 bfd_boolean is_cdecl
= FALSE
;
3187 bfd_boolean is_undef
= FALSE
;
3189 if (!lead_at
&& strchr (imp
[i
].internal_name
, '@') == NULL
)
3193 sprintf (name
, "%s", imp
[i
].internal_name
);
3195 sprintf (name
, "%s%s",U (""), imp
[i
].internal_name
);
3197 blhe
= bfd_link_hash_lookup (linfo
->hash
, name
,
3198 FALSE
, FALSE
, FALSE
);
3200 /* Include the jump stub for <sym> only if the <sym>
3202 if (!blhe
|| (blhe
&& blhe
->type
!= bfd_link_hash_undefined
))
3205 sprintf (name
, "%s%s", "__imp_", imp
[i
].internal_name
);
3207 sprintf (name
, "%s%s%s", "__imp_", U (""),
3208 imp
[i
].internal_name
);
3210 blhe
= bfd_link_hash_lookup (linfo
->hash
, name
,
3211 FALSE
, FALSE
, FALSE
);
3213 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3217 include_jmp_stub
= TRUE
;
3218 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3221 if (is_cdecl
&& (!blhe
|| (blhe
&& blhe
->type
!= bfd_link_hash_undefined
)))
3223 sprintf (name
, "%s%s",U (""), imp
[i
].internal_name
);
3224 blhe
= pe_find_cdecl_alias_match (linfo
, name
);
3225 include_jmp_stub
= TRUE
;
3227 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3238 bfd
*ar_head
= make_head (output_bfd
);
3239 add_bfd_to_link (ar_head
, ar_head
->filename
, linfo
);
3242 exp
.internal_name
= imp
[i
].internal_name
;
3243 exp
.name
= imp
[i
].name
;
3244 exp
.its_name
= imp
[i
].its_name
;
3245 exp
.ordinal
= imp
[i
].ordinal
;
3246 exp
.hint
= exp
.ordinal
>= 0 ? exp
.ordinal
: 0;
3247 exp
.flag_private
= 0;
3248 exp
.flag_constant
= 0;
3249 exp
.flag_data
= imp
[i
].data
;
3250 exp
.flag_noname
= exp
.name
? 0 : 1;
3251 one
= make_one (&exp
, output_bfd
, (! exp
.flag_data
) && include_jmp_stub
);
3252 add_bfd_to_link (one
, one
->filename
, linfo
);
3257 bfd
*ar_tail
= make_tail (output_bfd
);
3258 add_bfd_to_link (ar_tail
, ar_tail
->filename
, linfo
);
3267 free (udef_table
[undef_count
].key
);
3272 /* We were handed a *.DLL file. Parse it and turn it into a set of
3273 IMPORTS directives in the def file. Return TRUE if the file was
3274 handled, FALSE if not. */
3277 pe_get16 (bfd
*abfd
, int where
)
3281 bfd_seek (abfd
, (file_ptr
) where
, SEEK_SET
);
3282 bfd_bread (b
, (bfd_size_type
) 2, abfd
);
3283 return b
[0] + (b
[1] << 8);
3287 pe_get32 (bfd
*abfd
, int where
)
3291 bfd_seek (abfd
, (file_ptr
) where
, SEEK_SET
);
3292 bfd_bread (b
, (bfd_size_type
) 4, abfd
);
3293 return b
[0] + (b
[1] << 8) + (b
[2] << 16) + ((unsigned) b
[3] << 24);
3299 unsigned char *b
= ptr
;
3301 return b
[0] + (b
[1] << 8) + (b
[2] << 16) + ((unsigned) b
[3] << 24);
3305 pe_implied_import_dll (const char *filename
)
3308 bfd_vma pe_header_offset
, opthdr_ofs
, num_entries
, i
;
3309 bfd_vma export_rva
, export_size
, nsections
, secptr
, expptr
;
3310 bfd_vma exp_funcbase
;
3311 unsigned char *expdata
;
3313 bfd_vma name_rvas
, nexp
;
3314 const char *dllname
;
3315 /* Initialization with start > end guarantees that is_data
3316 will not be set by mistake, and avoids compiler warning. */
3317 bfd_vma data_start
= 1;
3318 bfd_vma data_end
= 0;
3319 bfd_vma rdata_start
= 1;
3320 bfd_vma rdata_end
= 0;
3321 bfd_vma bss_start
= 1;
3322 bfd_vma bss_end
= 0;
3325 /* No, I can't use bfd here. kernel32.dll puts its export table in
3326 the middle of the .rdata section. */
3327 dll
= bfd_openr (filename
, pe_details
->target_name
);
3330 einfo (_("%X%P: open %s: %E\n"), filename
);
3334 /* PEI dlls seem to be bfd_objects. */
3335 if (!bfd_check_format (dll
, bfd_object
))
3337 einfo (_("%X%P: %s: this doesn't appear to be a DLL\n"), filename
);
3341 /* Get pe_header, optional header and numbers of directory entries. */
3342 pe_header_offset
= pe_get32 (dll
, 0x3c);
3343 opthdr_ofs
= pe_header_offset
+ 4 + 20;
3344 #ifdef pe_use_x86_64
3345 num_entries
= pe_get32 (dll
, opthdr_ofs
+ 92 + 4 * 4); /* & NumberOfRvaAndSizes. */
3347 num_entries
= pe_get32 (dll
, opthdr_ofs
+ 92);
3350 /* No import or export directory entry. */
3351 if (num_entries
< 1)
3354 #ifdef pe_use_x86_64
3355 export_rva
= pe_get32 (dll
, opthdr_ofs
+ 96 + 4 * 4);
3356 export_size
= pe_get32 (dll
, opthdr_ofs
+ 100 + 4 * 4);
3358 export_rva
= pe_get32 (dll
, opthdr_ofs
+ 96);
3359 export_size
= pe_get32 (dll
, opthdr_ofs
+ 100);
3362 /* No export table - nothing to export. */
3363 if (export_size
== 0)
3366 nsections
= pe_get16 (dll
, pe_header_offset
+ 4 + 2);
3367 secptr
= (pe_header_offset
+ 4 + 20 +
3368 pe_get16 (dll
, pe_header_offset
+ 4 + 16));
3371 /* Get the rva and size of the export section. */
3372 for (i
= 0; i
< nsections
; i
++)
3375 bfd_vma secptr1
= secptr
+ 40 * i
;
3376 bfd_vma vaddr
= pe_get32 (dll
, secptr1
+ 12);
3377 bfd_vma vsize
= pe_get32 (dll
, secptr1
+ 16);
3378 bfd_vma fptr
= pe_get32 (dll
, secptr1
+ 20);
3380 bfd_seek (dll
, (file_ptr
) secptr1
, SEEK_SET
);
3381 bfd_bread (sname
, (bfd_size_type
) 8, dll
);
3383 if (vaddr
<= export_rva
&& vaddr
+ vsize
> export_rva
)
3385 expptr
= fptr
+ (export_rva
- vaddr
);
3386 if (export_rva
+ export_size
> vaddr
+ vsize
)
3387 export_size
= vsize
- (export_rva
- vaddr
);
3392 /* Scan sections and store the base and size of the
3393 data and bss segments in data/base_start/end. */
3394 for (i
= 0; i
< nsections
; i
++)
3396 bfd_vma secptr1
= secptr
+ 40 * i
;
3397 bfd_vma vsize
= pe_get32 (dll
, secptr1
+ 8);
3398 bfd_vma vaddr
= pe_get32 (dll
, secptr1
+ 12);
3399 bfd_vma flags
= pe_get32 (dll
, secptr1
+ 36);
3403 bfd_seek (dll
, (file_ptr
) secptr1
+ 0, SEEK_SET
);
3404 bfd_bread (sec_name
, (bfd_size_type
) 8, dll
);
3406 if (strcmp(sec_name
,".data") == 0)
3409 data_end
= vaddr
+ vsize
;
3411 if (pe_dll_extra_pe_debug
)
3412 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3413 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3414 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3416 else if (strcmp(sec_name
,".rdata") == 0)
3418 rdata_start
= vaddr
;
3419 rdata_end
= vaddr
+ vsize
;
3421 if (pe_dll_extra_pe_debug
)
3422 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3423 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3424 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3426 else if (strcmp (sec_name
,".bss") == 0)
3429 bss_end
= vaddr
+ vsize
;
3431 if (pe_dll_extra_pe_debug
)
3432 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3433 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3434 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3438 expdata
= xmalloc (export_size
);
3439 bfd_seek (dll
, (file_ptr
) expptr
, SEEK_SET
);
3440 bfd_bread (expdata
, (bfd_size_type
) export_size
, dll
);
3441 erva
= (char *) expdata
- export_rva
;
3443 if (pe_def_file
== 0)
3444 pe_def_file
= def_file_empty ();
3446 nexp
= pe_as32 (expdata
+ 24);
3447 name_rvas
= pe_as32 (expdata
+ 32);
3448 exp_funcbase
= pe_as32 (expdata
+ 28);
3450 /* Use internal dll name instead of filename
3451 to enable symbolic dll linking. */
3452 dllname
= erva
+ pe_as32 (expdata
+ 12);
3454 /* Check to see if the dll has already been added to
3455 the definition list and if so return without error.
3456 This avoids multiple symbol definitions. */
3457 if (def_get_module (pe_def_file
, dllname
))
3459 if (pe_dll_extra_pe_debug
)
3460 printf ("%s is already loaded\n", dllname
);
3464 /* This is an optimized version of the insertion loop, which avoids lots of
3465 calls to realloc and memmove from def_file_add_import. */
3466 if ((from
= def_file_add_import_from (pe_def_file
, nexp
,
3467 erva
+ pe_as32 (erva
+ name_rvas
),
3468 dllname
, 0, NULL
, NULL
)) >= 0)
3470 for (i
= 0; i
< nexp
; i
++)
3472 /* Pointer to the names vector. */
3473 bfd_vma name_rva
= pe_as32 (erva
+ name_rvas
+ i
* 4);
3474 def_file_import
*imp
;
3475 /* Pointer to the function address vector. */
3476 bfd_vma func_rva
= pe_as32 (erva
+ exp_funcbase
+ i
* 4);
3477 /* is_data is true if the address is in the data, rdata or bss
3480 (func_rva
>= data_start
&& func_rva
< data_end
)
3481 || (func_rva
>= rdata_start
&& func_rva
< rdata_end
)
3482 || (func_rva
>= bss_start
&& func_rva
< bss_end
);
3484 imp
= def_file_add_import_at (pe_def_file
, from
+ i
, erva
+ name_rva
,
3485 dllname
, i
, NULL
, NULL
);
3486 /* Mark symbol type. */
3487 imp
->data
= is_data
;
3489 if (pe_dll_extra_pe_debug
)
3490 printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
3491 __FUNCTION__
, dllname
, erva
+ name_rva
,
3492 (unsigned long) func_rva
, is_data
? "(data)" : "");
3498 /* Iterate through the list of symbols. */
3499 for (i
= 0; i
< nexp
; i
++)
3501 /* Pointer to the names vector. */
3502 bfd_vma name_rva
= pe_as32 (erva
+ name_rvas
+ i
* 4);
3503 def_file_import
*imp
;
3504 /* Pointer to the function address vector. */
3505 bfd_vma func_rva
= pe_as32 (erva
+ exp_funcbase
+ i
* 4);
3508 /* Skip unwanted symbols, which are
3509 exported in buggy auto-import releases. */
3510 if (! CONST_STRNEQ (erva
+ name_rva
, "__nm_"))
3513 /* is_data is true if the address is in the data, rdata or bss
3516 (func_rva
>= data_start
&& func_rva
< data_end
)
3517 || (func_rva
>= rdata_start
&& func_rva
< rdata_end
)
3518 || (func_rva
>= bss_start
&& func_rva
< bss_end
);
3520 imp
= def_file_add_import (pe_def_file
, erva
+ name_rva
,
3521 dllname
, i
, NULL
, NULL
, &is_dup
);
3522 /* Mark symbol type. */
3524 imp
->data
= is_data
;
3526 if (pe_dll_extra_pe_debug
)
3527 printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
3528 __FUNCTION__
, dllname
, erva
+ name_rva
,
3529 (unsigned long) func_rva
, is_data
? "(data)" : "");
3537 pe_output_file_set_long_section_names (bfd
*abfd
)
3539 if (pe_use_coff_long_section_names
< 0)
3541 if (!bfd_coff_set_long_section_names (abfd
, pe_use_coff_long_section_names
))
3542 einfo (_("%X%P: error: can't use long section names on this arch\n"));
3545 /* These are the main functions, called from the emulation. The first
3546 is called after the bfds are read, so we can guess at how much space
3547 we need. The second is called after everything is placed, so we
3548 can put the right values in place. */
3551 pe_dll_build_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3553 pe_dll_id_target (bfd_get_target (abfd
));
3554 pe_output_file_set_long_section_names (abfd
);
3555 process_def_file_and_drectve (abfd
, info
);
3557 if (pe_def_file
->num_exports
== 0 && !bfd_link_pic (info
))
3559 if (pe_dll_enable_reloc_section
)
3561 build_filler_bfd (0);
3562 pe_output_file_set_long_section_names (filler_bfd
);
3567 generate_edata (abfd
, info
);
3568 build_filler_bfd (1);
3569 pe_output_file_set_long_section_names (filler_bfd
);
3573 pe_exe_build_sections (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3575 pe_dll_id_target (bfd_get_target (abfd
));
3576 pe_output_file_set_long_section_names (abfd
);
3577 build_filler_bfd (0);
3578 pe_output_file_set_long_section_names (filler_bfd
);
3582 pe_dll_fill_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3584 pe_exe_fill_sections (abfd
, info
);
3588 fill_edata (abfd
, info
);
3589 edata_s
->contents
= edata_d
;
3592 if (bfd_link_dll (info
))
3593 pe_data (abfd
)->dll
= 1;
3597 pe_exe_fill_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3599 pe_dll_id_target (bfd_get_target (abfd
));
3600 pe_output_file_set_long_section_names (abfd
);
3601 image_base
= pe_data (abfd
)->pe_opthdr
.ImageBase
;
3603 generate_reloc (abfd
, info
);
3606 bfd_set_section_size (reloc_s
, reloc_sz
);
3608 /* Resize the sections. */
3609 lang_reset_memory_regions ();
3610 lang_size_sections (NULL
, TRUE
);
3612 /* Redo special stuff. */
3613 ldemul_after_allocation ();
3615 /* Do the assignments again. */
3616 lang_do_assignments (lang_final_phase_enum
);
3618 reloc_s
->contents
= reloc_d
;
3622 pe_bfd_is_dll (bfd
*abfd
)
3624 return (bfd_get_format (abfd
) == bfd_object
3626 && pe_data (abfd
)->dll
);