1 /* Routines to help build PEI-format DLLs (Win32 etc)
2 Copyright (C) 1998-2016 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"
40 #include "coff/internal.h"
41 #include "../bfd/libcoff.h"
46 #define PE_IDATA4_SIZE 8
47 #define PE_IDATA5_SIZE 8
50 #define AOUTSZ PEPAOUTSZ
51 #define PEAOUTHDR PEPAOUTHDR
59 #ifndef PE_IDATA4_SIZE
60 #define PE_IDATA4_SIZE 4
63 #ifndef PE_IDATA5_SIZE
64 #define PE_IDATA5_SIZE 4
67 /* This file turns a regular Windows PE image into a DLL. Because of
68 the complexity of this operation, it has been broken down into a
69 number of separate modules which are all called by the main function
70 at the end of this file. This function is not re-entrant and is
71 normally only called once, so static variables are used to reduce
72 the number of parameters and return values required.
74 See also: ld/emultempl/pe.em and ld/emultempl/pep.em. */
76 /* Auto-import feature by Paul Sokolovsky
80 1. With this feature on, DLL clients can import variables from DLL
81 without any concern from their side (for example, without any source
84 2. This is done completely in bounds of the PE specification (to be fair,
85 there's a place where it pokes nose out of, but in practice it works).
86 So, resulting module can be used with any other PE compiler/linker.
88 3. Auto-import is fully compatible with standard import method and they
89 can be mixed together.
91 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each
92 reference to it; load time: negligible; virtual/physical memory: should be
93 less than effect of DLL relocation, and I sincerely hope it doesn't affect
94 DLL sharability (too much).
98 The obvious and only way to get rid of dllimport insanity is to make client
99 access variable directly in the DLL, bypassing extra dereference. I.e.,
100 whenever client contains something like
104 address of dll_var in the command should be relocated to point into loaded
105 DLL. The aim is to make OS loader do so, and than make ld help with that.
106 Import section of PE made following way: there's a vector of structures
107 each describing imports from particular DLL. Each such structure points
108 to two other parallel vectors: one holding imported names, and one which
109 will hold address of corresponding imported name. So, the solution is
110 de-vectorize these structures, making import locations be sparse and
111 pointing directly into code. Before continuing, it is worth a note that,
112 while authors strives to make PE act ELF-like, there're some other people
113 make ELF act PE-like: elfvector, ;-) .
117 For each reference of data symbol to be imported from DLL (to set of which
118 belong symbols with name <sym>, if __imp_<sym> is found in implib), the
119 import fixup entry is generated. That entry is of type
120 IMAGE_IMPORT_DESCRIPTOR and stored in .idata$2 subsection. Each
121 fixup entry contains pointer to symbol's address within .text section
122 (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name
123 (so, DLL name is referenced by multiple entries), and pointer to symbol
124 name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>)
125 pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly
126 containing imported name. Here comes that "on the edge" problem mentioned
127 above: PE specification rambles that name vector (OriginalFirstThunk)
128 should run in parallel with addresses vector (FirstThunk), i.e. that they
129 should have same number of elements and terminated with zero. We violate
130 this, since FirstThunk points directly into machine code. But in practice,
131 OS loader implemented the sane way: it goes through OriginalFirstThunk and
132 puts addresses to FirstThunk, not something else. It once again should be
133 noted that dll and symbol name structures are reused across fixup entries
134 and should be there anyway to support standard import stuff, so sustained
135 overhead is 20 bytes per reference. Other question is whether having several
136 IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is
137 done even by native compiler/linker (libth32's functions are in fact reside
138 in windows9x kernel32.dll, so if you use it, you have two
139 IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether
140 referencing the same PE structures several times is valid. The answer is why
141 not, prohibiting that (detecting violation) would require more work on
142 behalf of loader than not doing it.
144 See also: ld/emultempl/pe.em and ld/emultempl/pep.em. */
146 static void add_bfd_to_link (bfd
*, const char *, struct bfd_link_info
*);
148 /* For emultempl/pe.em. */
150 def_file
* pe_def_file
= 0;
151 int pe_dll_export_everything
= 0;
152 int pe_dll_exclude_all_symbols
= 0;
153 int pe_dll_do_default_excludes
= 1;
154 int pe_dll_kill_ats
= 0;
155 int pe_dll_stdcall_aliases
= 0;
156 int pe_dll_warn_dup_exports
= 0;
157 int pe_dll_compat_implib
= 0;
158 int pe_dll_extra_pe_debug
= 0;
159 int pe_use_nul_prefixed_import_tables
= 0;
160 int pe_use_coff_long_section_names
= -1;
161 int pe_leading_underscore
= -1;
163 /* Static variables and types. */
165 static bfd_vma image_base
;
166 static bfd
*filler_bfd
;
167 static struct bfd_section
*edata_s
, *reloc_s
;
168 static unsigned char *edata_d
, *reloc_d
;
169 static size_t edata_sz
, reloc_sz
;
170 static int runtime_pseudo_relocs_created
= 0;
171 static int runtime_pseudp_reloc_v2_init
= 0;
178 autofilter_entry_type
;
182 const char *target_name
;
183 const char *object_target
;
184 unsigned int imagebase_reloc
;
187 bfd_boolean underscored
;
188 const autofilter_entry_type
* autofilter_symbollist
;
192 static const autofilter_entry_type autofilter_symbollist_generic
[] =
194 { STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
195 /* Entry point symbols. */
196 { STRING_COMMA_LEN ("DllMain") },
197 { STRING_COMMA_LEN ("DllMainCRTStartup") },
198 { STRING_COMMA_LEN ("_DllMainCRTStartup") },
199 /* Runtime pseudo-reloc. */
200 { STRING_COMMA_LEN ("_pei386_runtime_relocator") },
201 { STRING_COMMA_LEN ("do_pseudo_reloc") },
205 static const autofilter_entry_type autofilter_symbollist_i386
[] =
207 { STRING_COMMA_LEN ("_NULL_IMPORT_DESCRIPTOR") },
208 /* Entry point symbols, and entry hooks. */
209 { STRING_COMMA_LEN ("cygwin_crt0") },
211 { STRING_COMMA_LEN ("DllMain") },
212 { STRING_COMMA_LEN ("DllEntryPoint") },
213 { STRING_COMMA_LEN ("DllMainCRTStartup") },
214 { STRING_COMMA_LEN ("_cygwin_dll_entry") },
215 { STRING_COMMA_LEN ("_cygwin_crt0_common") },
216 { STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry") },
218 { STRING_COMMA_LEN ("DllMain@12") },
219 { STRING_COMMA_LEN ("DllEntryPoint@0") },
220 { STRING_COMMA_LEN ("DllMainCRTStartup@12") },
221 { STRING_COMMA_LEN ("_cygwin_dll_entry@12") },
222 { STRING_COMMA_LEN ("_cygwin_crt0_common@8") },
223 { STRING_COMMA_LEN ("_cygwin_noncygwin_dll_entry@12") },
224 { STRING_COMMA_LEN ("cygwin_attach_dll") },
226 { STRING_COMMA_LEN ("cygwin_premain0") },
227 { STRING_COMMA_LEN ("cygwin_premain1") },
228 { STRING_COMMA_LEN ("cygwin_premain2") },
229 { STRING_COMMA_LEN ("cygwin_premain3") },
230 /* Runtime pseudo-reloc. */
231 { STRING_COMMA_LEN ("_pei386_runtime_relocator") },
232 { STRING_COMMA_LEN ("do_pseudo_reloc") },
233 /* Global vars that should not be exported. */
234 { STRING_COMMA_LEN ("impure_ptr") },
235 { STRING_COMMA_LEN ("_impure_ptr") },
236 { STRING_COMMA_LEN ("_fmode") },
237 { STRING_COMMA_LEN ("environ") },
238 { STRING_COMMA_LEN ("__dso_handle") },
242 #define PE_ARCH_i386 1
244 #define PE_ARCH_mips 3
245 #define PE_ARCH_arm 4
246 #define PE_ARCH_arm_epoc 5
247 #define PE_ARCH_arm_wince 6
249 /* Don't make it constant as underscore mode gets possibly overriden
250 by target or -(no-)leading-underscore option. */
251 static pe_details_type pe_detail_list
[] =
270 autofilter_symbollist_i386
275 16 /* R_SH_IMAGEBASE */,
279 autofilter_symbollist_generic
288 autofilter_symbollist_generic
297 autofilter_symbollist_generic
300 "epoc-pei-arm-little",
301 "epoc-pe-arm-little",
306 autofilter_symbollist_generic
309 "pei-arm-wince-little",
310 "pe-arm-wince-little",
311 2, /* ARM_RVA32 on Windows CE, see bfd/coff-arm.c. */
315 autofilter_symbollist_generic
317 { NULL
, NULL
, 0, 0, 0, FALSE
, NULL
}
320 static const pe_details_type
*pe_details
;
322 /* Do not specify library suffix explicitly, to allow for dllized versions. */
323 static const autofilter_entry_type autofilter_liblist
[] =
325 { STRING_COMMA_LEN ("libcegcc") },
326 { STRING_COMMA_LEN ("libcygwin") },
327 { STRING_COMMA_LEN ("libgcc") },
328 { STRING_COMMA_LEN ("libgcc_s") },
329 { STRING_COMMA_LEN ("libstdc++") },
330 { STRING_COMMA_LEN ("libmingw32") },
331 { STRING_COMMA_LEN ("libmingwex") },
332 { STRING_COMMA_LEN ("libg2c") },
333 { STRING_COMMA_LEN ("libsupc++") },
334 { STRING_COMMA_LEN ("libobjc") },
335 { STRING_COMMA_LEN ("libgcj") },
339 /* Regardless of the suffix issue mentioned above, we must ensure that
340 we do not falsely match on a leading substring, such as when libtool
341 builds libstdc++ as a DLL using libsupc++convenience.a as an intermediate.
342 This routine ensures that the leading part of the name matches and that
343 it is followed by only an optional version suffix and a file extension,
344 returning zero if so or -1 if not. */
345 static int libnamencmp (const char *libname
, const autofilter_entry_type
*afptr
)
347 if (filename_ncmp (libname
, afptr
->name
, afptr
->len
))
350 libname
+= afptr
->len
;
352 /* Be liberal in interpreting what counts as a version suffix; we
353 accept anything that has a dash to separate it from the name and
354 begins with a digit. */
355 if (libname
[0] == '-')
357 if (!ISDIGIT (*++libname
))
359 /* Ensure the filename has an extension. */
360 while (*++libname
!= '.')
364 else if (libname
[0] != '.')
370 static const autofilter_entry_type autofilter_objlist
[] =
372 { STRING_COMMA_LEN ("crt0.o") },
373 { STRING_COMMA_LEN ("crt1.o") },
374 { STRING_COMMA_LEN ("crt2.o") },
375 { STRING_COMMA_LEN ("dllcrt1.o") },
376 { STRING_COMMA_LEN ("dllcrt2.o") },
377 { STRING_COMMA_LEN ("gcrt0.o") },
378 { STRING_COMMA_LEN ("gcrt1.o") },
379 { STRING_COMMA_LEN ("gcrt2.o") },
380 { STRING_COMMA_LEN ("crtbegin.o") },
381 { STRING_COMMA_LEN ("crtend.o") },
385 static const autofilter_entry_type autofilter_symbolprefixlist
[] =
387 /* _imp_ is treated specially, as it is always underscored. */
388 /* { STRING_COMMA_LEN ("_imp_") }, */
389 /* Don't export some c++ symbols. */
390 { STRING_COMMA_LEN ("__rtti_") },
391 { STRING_COMMA_LEN ("__builtin_") },
392 /* Don't re-export auto-imported symbols. */
393 { STRING_COMMA_LEN ("__nm_") },
394 /* Don't export symbols specifying internal DLL layout. */
395 { STRING_COMMA_LEN ("_head_") },
396 { STRING_COMMA_LEN ("_IMPORT_DESCRIPTOR_") },
397 /* Don't export section labels or artificial symbols
399 { STRING_COMMA_LEN (".") },
403 static const autofilter_entry_type autofilter_symbolsuffixlist
[] =
405 { STRING_COMMA_LEN ("_iname") },
406 { STRING_COMMA_LEN ("_NULL_THUNK_DATA") },
410 #define U(str) (pe_details->underscored ? "_" str : str)
413 pe_dll_id_target (const char *target
)
417 for (i
= 0; pe_detail_list
[i
].target_name
; i
++)
418 if (strcmp (pe_detail_list
[i
].target_name
, target
) == 0
419 || strcmp (pe_detail_list
[i
].object_target
, target
) == 0)
421 int u
= pe_leading_underscore
; /* Underscoring mode. -1 for use default. */
423 bfd_get_target_info (target
, NULL
, NULL
, &u
, NULL
);
426 pe_detail_list
[i
].underscored
= (u
!= 0 ? TRUE
: FALSE
);
427 pe_details
= pe_detail_list
+ i
;
428 pe_leading_underscore
= (u
!= 0 ? 1 : 0);
431 einfo (_("%XUnsupported PEI architecture: %s\n"), target
);
435 /* Helper functions for qsort. Relocs must be sorted so that we can write
436 them out by pages. */
447 reloc_sort (const void *va
, const void *vb
)
449 bfd_vma a
= ((const reloc_data_type
*) va
)->vma
;
450 bfd_vma b
= ((const reloc_data_type
*) vb
)->vma
;
452 return (a
> b
) ? 1 : ((a
< b
) ? -1 : 0);
456 pe_export_sort (const void *va
, const void *vb
)
458 const def_file_export
*a
= va
;
459 const def_file_export
*b
= vb
;
467 return strcmp (an
, bn
);
470 /* Read and process the .DEF file. */
472 /* These correspond to the entries in pe_def_file->exports[]. I use
473 exported_symbol_sections[i] to tag whether or not the symbol was
474 defined, since we can't export symbols we don't have. */
476 static bfd_vma
*exported_symbol_offsets
;
477 static struct bfd_section
**exported_symbol_sections
;
478 static int export_table_size
;
479 static int count_exported
;
480 static int count_exported_byname
;
481 static int count_with_ordinals
;
482 static const char *dll_name
;
483 static int min_ordinal
, max_ordinal
;
484 static int *exported_symbols
;
486 typedef struct exclude_list_struct
489 struct exclude_list_struct
*next
;
494 static struct exclude_list_struct
*excludes
= 0;
497 pe_dll_add_excludes (const char *new_excludes
, const exclude_type type
)
500 char *exclude_string
;
502 local_copy
= xstrdup (new_excludes
);
504 exclude_string
= strtok (local_copy
, ",:");
505 for (; exclude_string
; exclude_string
= strtok (NULL
, ",:"))
507 struct exclude_list_struct
*new_exclude
;
509 new_exclude
= xmalloc (sizeof (struct exclude_list_struct
));
510 new_exclude
->string
= xmalloc (strlen (exclude_string
) + 1);
511 strcpy (new_exclude
->string
, exclude_string
);
512 new_exclude
->type
= type
;
513 new_exclude
->next
= excludes
;
514 excludes
= new_exclude
;
521 is_import (const char* n
)
523 return (CONST_STRNEQ (n
, "__imp_"));
526 /* abfd is a bfd containing n (or NULL)
527 It can be used for contextual checks. */
530 auto_export (bfd
*abfd
, def_file
*d
, const char *n
)
533 struct exclude_list_struct
*ex
;
534 const autofilter_entry_type
*afptr
;
535 const char * libname
= NULL
;
537 if (abfd
&& abfd
->my_archive
)
538 libname
= lbasename (abfd
->my_archive
->filename
);
540 key
.name
= key
.its_name
= (char *) n
;
542 /* Return false if n is in the d->exports table. */
543 if (bsearch (&key
, d
->exports
, d
->num_exports
,
544 sizeof (pe_def_file
->exports
[0]), pe_export_sort
))
547 if (pe_dll_do_default_excludes
)
552 if (pe_dll_extra_pe_debug
)
553 printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n",
554 n
, abfd
, abfd
->my_archive
);
556 /* First of all, make context checks:
557 Don't export anything from standard libs. */
560 afptr
= autofilter_liblist
;
564 if (libnamencmp (libname
, afptr
) == 0 )
570 /* Next, exclude symbols from certain startup objects. */
572 if (abfd
&& (p
= lbasename (abfd
->filename
)))
574 afptr
= autofilter_objlist
;
577 if (strcmp (p
, afptr
->name
) == 0)
583 /* Don't try to blindly exclude all symbols
584 that begin with '__'; this was tried and
585 it is too restrictive. Instead we have
586 a target specific list to use: */
587 afptr
= pe_details
->autofilter_symbollist
;
591 if (strcmp (n
, afptr
->name
) == 0)
597 /* Next, exclude symbols starting with ... */
598 afptr
= autofilter_symbolprefixlist
;
601 if (strncmp (n
, afptr
->name
, afptr
->len
) == 0)
607 /* Finally, exclude symbols ending with ... */
609 afptr
= autofilter_symbolsuffixlist
;
612 if ((len
>= afptr
->len
)
613 /* Add 1 to insure match with trailing '\0'. */
614 && strncmp (n
+ len
- afptr
->len
, afptr
->name
,
615 afptr
->len
+ 1) == 0)
622 for (ex
= excludes
; ex
; ex
= ex
->next
)
624 if (ex
->type
== EXCLUDELIBS
)
627 && ((filename_cmp (libname
, ex
->string
) == 0)
628 || (strcasecmp ("ALL", ex
->string
) == 0)))
631 else if (ex
->type
== EXCLUDEFORIMPLIB
)
633 if (filename_cmp (abfd
->filename
, ex
->string
) == 0)
636 else if (strcmp (n
, ex
->string
) == 0)
644 process_def_file_and_drectve (bfd
*abfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
647 struct bfd_link_hash_entry
*blhe
;
649 struct bfd_section
*s
;
650 def_file_export
*e
= 0;
651 bfd_boolean resort_needed
;
654 pe_def_file
= def_file_empty ();
656 /* First, run around to all the objects looking for the .drectve
657 sections, and push those into the def file too. */
658 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
660 s
= bfd_get_section_by_name (b
, ".drectve");
664 char *buf
= xmalloc (size
);
666 bfd_get_section_contents (b
, s
, buf
, 0, size
);
667 def_file_add_directive (pe_def_file
, buf
, size
);
672 /* Process aligned common symbol information from the
673 .drectve sections now; common symbol allocation is
674 done before final link, so it will be too late to
675 process them in process_embedded_commands() called
676 from _bfd_coff_link_input_bfd(). */
677 if (pe_def_file
->aligncomms
)
679 def_file_aligncomm
*ac
= pe_def_file
->aligncomms
;
682 struct coff_link_hash_entry
*sym_hash
;
683 sym_hash
= coff_link_hash_lookup (coff_hash_table (info
),
684 ac
->symbol_name
, FALSE
, FALSE
, FALSE
);
685 if (sym_hash
&& sym_hash
->root
.type
== bfd_link_hash_common
686 && sym_hash
->root
.u
.c
.p
->alignment_power
< (unsigned) ac
->alignment
)
688 sym_hash
->root
.u
.c
.p
->alignment_power
= (unsigned) ac
->alignment
;
694 /* If we are building an executable and there is nothing
695 to export, we do not build an export table at all. */
696 if (bfd_link_executable (info
) && pe_def_file
->num_exports
== 0
697 && (!pe_dll_export_everything
|| pe_dll_exclude_all_symbols
))
700 /* Now, maybe export everything else the default way. */
701 if ((pe_dll_export_everything
|| pe_def_file
->num_exports
== 0)
702 && !pe_dll_exclude_all_symbols
)
704 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
709 if (!bfd_generic_link_read_symbols (b
))
711 einfo (_("%B%F: could not read symbols: %E\n"), b
);
715 symbols
= bfd_get_outsymbols (b
);
716 nsyms
= bfd_get_symcount (b
);
718 for (j
= 0; j
< nsyms
; j
++)
720 /* We should export symbols which are either global or not
721 anything at all. (.bss data is the latter)
722 We should not export undefined symbols. */
723 bfd_boolean would_export
724 = (symbols
[j
]->section
!= bfd_und_section_ptr
725 && ((symbols
[j
]->flags
& BSF_GLOBAL
)
726 || (symbols
[j
]->flags
== 0)));
727 if (link_info
.version_info
&& would_export
)
729 = !bfd_hide_sym_by_version (link_info
.version_info
,
733 const char *sn
= symbols
[j
]->name
;
735 /* We should not re-export imported stuff. */
741 name
= xmalloc (strlen ("__imp_") + strlen (sn
) + 1);
742 sprintf (name
, "%s%s", "__imp_", sn
);
744 blhe
= bfd_link_hash_lookup (info
->hash
, name
,
745 FALSE
, FALSE
, FALSE
);
748 if (blhe
&& blhe
->type
== bfd_link_hash_defined
)
752 if (pe_details
->underscored
&& *sn
== '_')
755 if (auto_export (b
, pe_def_file
, sn
))
760 p
= def_file_add_export (pe_def_file
, sn
, 0, -1,
762 /* Fill data flag properly, from dlltool.c. */
764 p
->flag_data
= !(symbols
[j
]->flags
& BSF_FUNCTION
);
772 #define NE pe_def_file->num_exports
774 /* Don't create an empty export table. */
778 resort_needed
= FALSE
;
780 /* Canonicalize the export list. */
783 for (i
= 0; i
< NE
; i
++)
785 /* Check for fastcall/stdcall-decoration, but ignore
786 C++ mangled names. */
787 if (pe_def_file
->exports
[i
].name
[0] != '?'
788 && strchr (pe_def_file
->exports
[i
].name
, '@'))
790 /* This will preserve internal_name, which may have been
791 pointing to the same memory as name, or might not
793 int lead_at
= (*pe_def_file
->exports
[i
].name
== '@');
794 char *tmp
= xstrdup (pe_def_file
->exports
[i
].name
+ lead_at
);
795 char *tmp_at
= strrchr (tmp
, '@');
800 einfo (_("%XCannot export %s: invalid export name\n"),
801 pe_def_file
->exports
[i
].name
);
802 pe_def_file
->exports
[i
].name
= tmp
;
803 resort_needed
= TRUE
;
808 /* Re-sort the exports table as we have possibly changed the order
809 by removing leading @. */
811 qsort (pe_def_file
->exports
, NE
, sizeof (pe_def_file
->exports
[0]),
814 if (pe_dll_stdcall_aliases
)
816 for (i
= 0; i
< NE
; i
++)
818 if (is_import (pe_def_file
->exports
[i
].name
))
821 if (strchr (pe_def_file
->exports
[i
].name
, '@'))
824 int lead_at
= (*pe_def_file
->exports
[i
].name
== '@');
825 char *tmp
= xstrdup (pe_def_file
->exports
[i
].name
+ lead_at
);
827 *(strchr (tmp
, '@')) = 0;
828 if (auto_export (NULL
, pe_def_file
, tmp
))
829 def_file_add_export (pe_def_file
, tmp
,
830 pe_def_file
->exports
[i
].internal_name
,
838 /* Convenience, but watch out for it changing. */
839 e
= pe_def_file
->exports
;
841 for (i
= 0, j
= 0; i
< NE
; i
++)
843 if (i
> 0 && strcmp (e
[i
].name
, e
[i
- 1].name
) == 0)
845 /* This is a duplicate. */
846 if (e
[j
- 1].ordinal
!= -1
847 && e
[i
].ordinal
!= -1
848 && e
[j
- 1].ordinal
!= e
[i
].ordinal
)
850 if (pe_dll_warn_dup_exports
)
851 /* xgettext:c-format */
852 einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"),
853 e
[j
- 1].name
, e
[j
- 1].ordinal
, e
[i
].ordinal
);
857 if (pe_dll_warn_dup_exports
)
858 /* xgettext:c-format */
859 einfo (_("Warning, duplicate EXPORT: %s\n"),
863 if (e
[i
].ordinal
!= -1)
864 e
[j
- 1].ordinal
= e
[i
].ordinal
;
865 e
[j
- 1].flag_private
|= e
[i
].flag_private
;
866 e
[j
- 1].flag_constant
|= e
[i
].flag_constant
;
867 e
[j
- 1].flag_noname
|= e
[i
].flag_noname
;
868 e
[j
- 1].flag_data
|= e
[i
].flag_data
;
871 if (e
[i
].internal_name
)
872 free (e
[i
].internal_name
);
874 free (e
[i
].its_name
);
883 pe_def_file
->num_exports
= j
; /* == NE */
885 exported_symbol_offsets
= xmalloc (NE
* sizeof (bfd_vma
));
886 exported_symbol_sections
= xmalloc (NE
* sizeof (struct bfd_section
*));
888 memset (exported_symbol_sections
, 0, NE
* sizeof (struct bfd_section
*));
892 count_exported_byname
= 0;
893 count_with_ordinals
= 0;
895 for (i
= 0; i
< NE
; i
++)
897 char *int_name
= pe_def_file
->exports
[i
].internal_name
;
900 /* PR 19803: Make sure that any exported symbol does not get garbage collected. */
901 lang_add_gc_name (int_name
);
903 name
= xmalloc (strlen (int_name
) + 2);
904 if (pe_details
->underscored
&& int_name
[0] != '@')
907 strcpy (name
+ 1, int_name
);
909 /* PR 19803: The alias must be preserved as well. */
910 lang_add_gc_name (xstrdup (name
));
913 strcpy (name
, int_name
);
915 blhe
= bfd_link_hash_lookup (info
->hash
,
920 && (blhe
->type
== bfd_link_hash_defined
921 || (blhe
->type
== bfd_link_hash_common
)))
924 if (!pe_def_file
->exports
[i
].flag_noname
)
925 count_exported_byname
++;
927 /* Only fill in the sections. The actual offsets are computed
928 in fill_exported_offsets() after common symbols are laid
930 if (blhe
->type
== bfd_link_hash_defined
)
931 exported_symbol_sections
[i
] = blhe
->u
.def
.section
;
933 exported_symbol_sections
[i
] = blhe
->u
.c
.p
->section
;
935 if (pe_def_file
->exports
[i
].ordinal
!= -1)
937 if (max_ordinal
< pe_def_file
->exports
[i
].ordinal
)
938 max_ordinal
= pe_def_file
->exports
[i
].ordinal
;
939 if (min_ordinal
> pe_def_file
->exports
[i
].ordinal
)
940 min_ordinal
= pe_def_file
->exports
[i
].ordinal
;
941 count_with_ordinals
++;
944 /* Check for forward exports. These are indicated in DEF files by an
945 export directive of the form NAME1 = MODULE-NAME.EXTERNAL-NAME
946 but we must take care not to be fooled when the user wants to export
947 a symbol that actually really has a dot in it, so we only check
948 for them here, after real defined symbols have already been matched. */
949 else if (strchr (int_name
, '.'))
952 if (!pe_def_file
->exports
[i
].flag_noname
)
953 count_exported_byname
++;
955 pe_def_file
->exports
[i
].flag_forward
= 1;
957 if (pe_def_file
->exports
[i
].ordinal
!= -1)
959 if (max_ordinal
< pe_def_file
->exports
[i
].ordinal
)
960 max_ordinal
= pe_def_file
->exports
[i
].ordinal
;
961 if (min_ordinal
> pe_def_file
->exports
[i
].ordinal
)
962 min_ordinal
= pe_def_file
->exports
[i
].ordinal
;
963 count_with_ordinals
++;
966 else if (blhe
&& blhe
->type
== bfd_link_hash_undefined
)
968 /* xgettext:c-format */
969 einfo (_("%XCannot export %s: symbol not defined\n"),
974 /* xgettext:c-format */
975 einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"),
977 blhe
->type
, bfd_link_hash_defined
);
981 /* xgettext:c-format */
982 einfo (_("%XCannot export %s: symbol not found\n"),
989 /* Build the bfd that will contain .edata and .reloc sections. */
992 build_filler_bfd (int include_edata
)
994 lang_input_statement_type
*filler_file
;
995 filler_file
= lang_add_input_file ("dll stuff",
996 lang_input_file_is_fake_enum
,
998 filler_file
->the_bfd
= filler_bfd
= bfd_create ("dll stuff",
999 link_info
.output_bfd
);
1000 if (filler_bfd
== NULL
1001 || !bfd_set_arch_mach (filler_bfd
,
1002 bfd_get_arch (link_info
.output_bfd
),
1003 bfd_get_mach (link_info
.output_bfd
)))
1005 einfo ("%X%P: can not create BFD: %E\n");
1011 edata_s
= bfd_make_section_old_way (filler_bfd
, ".edata");
1013 || !bfd_set_section_flags (filler_bfd
, edata_s
,
1020 einfo ("%X%P: can not create .edata section: %E\n");
1023 bfd_set_section_size (filler_bfd
, edata_s
, edata_sz
);
1026 reloc_s
= bfd_make_section_old_way (filler_bfd
, ".reloc");
1028 || !bfd_set_section_flags (filler_bfd
, reloc_s
,
1035 einfo ("%X%P: can not create .reloc section: %E\n");
1039 bfd_set_section_size (filler_bfd
, reloc_s
, 0);
1041 ldlang_add_file (filler_file
);
1044 /* Gather all the exported symbols and build the .edata section. */
1047 generate_edata (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1049 int i
, next_ordinal
;
1050 int name_table_size
= 0;
1053 /* First, we need to know how many exported symbols there are,
1054 and what the range of ordinals is. */
1055 if (pe_def_file
->name
)
1056 dll_name
= pe_def_file
->name
;
1059 dll_name
= abfd
->filename
;
1061 for (dlnp
= dll_name
; *dlnp
; dlnp
++)
1062 if (*dlnp
== '\\' || *dlnp
== '/' || *dlnp
== ':')
1063 dll_name
= dlnp
+ 1;
1066 if (count_with_ordinals
&& max_ordinal
> count_exported
)
1068 if (min_ordinal
> max_ordinal
- count_exported
+ 1)
1069 min_ordinal
= max_ordinal
- count_exported
+ 1;
1074 max_ordinal
= count_exported
;
1077 export_table_size
= max_ordinal
- min_ordinal
+ 1;
1078 exported_symbols
= xmalloc (export_table_size
* sizeof (int));
1079 for (i
= 0; i
< export_table_size
; i
++)
1080 exported_symbols
[i
] = -1;
1082 /* Now we need to assign ordinals to those that don't have them. */
1083 for (i
= 0; i
< NE
; i
++)
1085 if (exported_symbol_sections
[i
] ||
1086 pe_def_file
->exports
[i
].flag_forward
)
1088 if (pe_def_file
->exports
[i
].ordinal
!= -1)
1090 int ei
= pe_def_file
->exports
[i
].ordinal
- min_ordinal
;
1091 int pi
= exported_symbols
[ei
];
1095 /* xgettext:c-format */
1096 einfo (_("%XError, ordinal used twice: %d (%s vs %s)\n"),
1097 pe_def_file
->exports
[i
].ordinal
,
1098 pe_def_file
->exports
[i
].name
,
1099 pe_def_file
->exports
[pi
].name
);
1101 exported_symbols
[ei
] = i
;
1103 if (pe_def_file
->exports
[i
].its_name
)
1104 name_table_size
+= strlen (pe_def_file
->exports
[i
].its_name
) + 1;
1106 name_table_size
+= strlen (pe_def_file
->exports
[i
].name
) + 1;
1109 /* Reserve space for the forward name. */
1110 if (pe_def_file
->exports
[i
].flag_forward
)
1112 name_table_size
+= strlen (pe_def_file
->exports
[i
].internal_name
) + 1;
1116 next_ordinal
= min_ordinal
;
1117 for (i
= 0; i
< NE
; i
++)
1118 if ((exported_symbol_sections
[i
] ||
1119 pe_def_file
->exports
[i
].flag_forward
) &&
1120 pe_def_file
->exports
[i
].ordinal
== -1)
1122 while (exported_symbols
[next_ordinal
- min_ordinal
] != -1)
1125 exported_symbols
[next_ordinal
- min_ordinal
] = i
;
1126 pe_def_file
->exports
[i
].ordinal
= next_ordinal
;
1129 /* OK, now we can allocate some memory. */
1130 edata_sz
= (40 /* directory */
1131 + 4 * export_table_size
/* addresses */
1132 + 4 * count_exported_byname
/* name ptrs */
1133 + 2 * count_exported_byname
/* ordinals */
1134 + name_table_size
+ strlen (dll_name
) + 1);
1137 /* Fill the exported symbol offsets. The preliminary work has already
1138 been done in process_def_file_and_drectve(). */
1141 fill_exported_offsets (bfd
*abfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
1144 struct bfd_link_hash_entry
*blhe
;
1146 for (i
= 0; i
< pe_def_file
->num_exports
; i
++)
1150 name
= xmalloc (strlen (pe_def_file
->exports
[i
].internal_name
) + 2);
1151 if (pe_details
->underscored
1152 && *pe_def_file
->exports
[i
].internal_name
!= '@')
1155 strcpy (name
+ 1, pe_def_file
->exports
[i
].internal_name
);
1158 strcpy (name
, pe_def_file
->exports
[i
].internal_name
);
1160 blhe
= bfd_link_hash_lookup (info
->hash
,
1162 FALSE
, FALSE
, TRUE
);
1164 if (blhe
&& blhe
->type
== bfd_link_hash_defined
)
1165 exported_symbol_offsets
[i
] = blhe
->u
.def
.value
;
1172 fill_edata (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1175 unsigned char *edirectory
;
1176 unsigned char *eaddresses
;
1177 unsigned char *enameptrs
;
1178 unsigned char *eordinals
;
1181 edata_d
= xmalloc (edata_sz
);
1183 /* Note use of array pointer math here. */
1184 edirectory
= edata_d
;
1185 eaddresses
= edirectory
+ 40;
1186 enameptrs
= eaddresses
+ 4 * export_table_size
;
1187 eordinals
= enameptrs
+ 4 * count_exported_byname
;
1188 enamestr
= (char *) eordinals
+ 2 * count_exported_byname
;
1190 #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \
1191 + edata_s->output_section->vma - image_base)
1193 memset (edata_d
, 0, edata_sz
);
1195 if (pe_data (abfd
)->insert_timestamp
)
1196 H_PUT_32 (abfd
, time (0), edata_d
+ 4);
1198 if (pe_def_file
->version_major
!= -1)
1200 bfd_put_16 (abfd
, pe_def_file
->version_major
, edata_d
+ 8);
1201 bfd_put_16 (abfd
, pe_def_file
->version_minor
, edata_d
+ 10);
1204 bfd_put_32 (abfd
, ERVA (enamestr
), edata_d
+ 12);
1205 strcpy (enamestr
, dll_name
);
1206 enamestr
+= strlen (enamestr
) + 1;
1207 bfd_put_32 (abfd
, min_ordinal
, edata_d
+ 16);
1208 bfd_put_32 (abfd
, export_table_size
, edata_d
+ 20);
1209 bfd_put_32 (abfd
, count_exported_byname
, edata_d
+ 24);
1210 bfd_put_32 (abfd
, ERVA (eaddresses
), edata_d
+ 28);
1211 bfd_put_32 (abfd
, ERVA (enameptrs
), edata_d
+ 32);
1212 bfd_put_32 (abfd
, ERVA (eordinals
), edata_d
+ 36);
1214 fill_exported_offsets (abfd
, info
);
1216 /* Ok, now for the filling in part.
1217 Scan alphabetically - ie the ordering in the exports[] table,
1218 rather than by ordinal - the ordering in the exported_symbol[]
1219 table. See dlltool.c and:
1220 http://sources.redhat.com/ml/binutils/2003-04/msg00379.html
1221 for more information. */
1223 for (s
= 0; s
< NE
; s
++)
1225 struct bfd_section
*ssec
= exported_symbol_sections
[s
];
1226 if (pe_def_file
->exports
[s
].ordinal
!= -1 &&
1227 (pe_def_file
->exports
[s
].flag_forward
|| ssec
!= NULL
))
1229 int ord
= pe_def_file
->exports
[s
].ordinal
;
1231 if (pe_def_file
->exports
[s
].flag_forward
)
1233 bfd_put_32 (abfd
, ERVA (enamestr
),
1234 eaddresses
+ 4 * (ord
- min_ordinal
));
1236 strcpy (enamestr
, pe_def_file
->exports
[s
].internal_name
);
1237 enamestr
+= strlen (pe_def_file
->exports
[s
].internal_name
) + 1;
1241 bfd_vma srva
= (exported_symbol_offsets
[s
]
1242 + ssec
->output_section
->vma
1243 + ssec
->output_offset
);
1245 bfd_put_32 (abfd
, srva
- image_base
,
1246 eaddresses
+ 4 * (ord
- min_ordinal
));
1249 if (!pe_def_file
->exports
[s
].flag_noname
)
1251 char *ename
= pe_def_file
->exports
[s
].name
;
1252 if (pe_def_file
->exports
[s
].its_name
)
1253 ename
= pe_def_file
->exports
[s
].its_name
;
1255 bfd_put_32 (abfd
, ERVA (enamestr
), enameptrs
);
1257 strcpy (enamestr
, ename
);
1258 enamestr
+= strlen (enamestr
) + 1;
1259 bfd_put_16 (abfd
, ord
- min_ordinal
, eordinals
);
1261 pe_def_file
->exports
[s
].hint
= hint
++;
1268 static struct bfd_section
*current_sec
;
1271 pe_walk_relocs_of_symbol (struct bfd_link_info
*info
,
1273 int (*cb
) (arelent
*, asection
*))
1278 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
1282 if (!bfd_generic_link_read_symbols (b
))
1284 einfo (_("%B%F: could not read symbols: %E\n"), b
);
1288 symbols
= bfd_get_outsymbols (b
);
1290 for (s
= b
->sections
; s
; s
= s
->next
)
1293 int relsize
, nrelocs
, i
;
1294 int flags
= bfd_get_section_flags (b
, s
);
1296 /* Skip discarded linkonce sections. */
1297 if (flags
& SEC_LINK_ONCE
1298 && s
->output_section
== bfd_abs_section_ptr
)
1303 relsize
= bfd_get_reloc_upper_bound (b
, s
);
1304 relocs
= xmalloc (relsize
);
1305 nrelocs
= bfd_canonicalize_reloc (b
, s
, relocs
, symbols
);
1307 for (i
= 0; i
< nrelocs
; i
++)
1309 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1311 if (!strcmp (name
, sym
->name
))
1317 /* Warning: the allocated symbols are remembered in BFD and reused
1318 later, so don't free them! */
1319 /* free (symbols); */
1324 /* Gather all the relocations and build the .reloc section. */
1327 generate_reloc (bfd
*abfd
, struct bfd_link_info
*info
)
1330 /* For .reloc stuff. */
1331 reloc_data_type
*reloc_data
;
1332 int total_relocs
= 0;
1334 bfd_vma sec_page
= (bfd_vma
) -1;
1335 bfd_vma page_ptr
, page_count
;
1338 struct bfd_section
*s
;
1341 for (b
= info
->input_bfds
; b
; b
= b
->link
.next
)
1342 for (s
= b
->sections
; s
; s
= s
->next
)
1343 total_relocs
+= s
->reloc_count
;
1345 reloc_data
= xmalloc (total_relocs
* sizeof (reloc_data_type
));
1349 for (bi
= 0, b
= info
->input_bfds
; b
; bi
++, b
= b
->link
.next
)
1352 int relsize
, nrelocs
;
1354 for (s
= b
->sections
; s
; s
= s
->next
)
1356 bfd_vma sec_vma
= s
->output_section
->vma
+ s
->output_offset
;
1359 /* If it's not loaded, we don't need to relocate it this way. */
1360 if (!(s
->output_section
->flags
& SEC_LOAD
))
1363 /* I don't know why there would be a reloc for these, but I've
1364 seen it happen - DJ */
1365 if (s
->output_section
== bfd_abs_section_ptr
)
1368 if (s
->output_section
->vma
== 0)
1370 /* Huh? Shouldn't happen, but punt if it does. */
1371 einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n",
1372 s
->output_section
->name
, s
->output_section
->index
,
1373 s
->output_section
->flags
);
1377 if (!bfd_generic_link_read_symbols (b
))
1379 einfo (_("%B%F: could not read symbols: %E\n"), b
);
1383 symbols
= bfd_get_outsymbols (b
);
1384 relsize
= bfd_get_reloc_upper_bound (b
, s
);
1385 relocs
= xmalloc (relsize
);
1386 nrelocs
= bfd_canonicalize_reloc (b
, s
, relocs
, symbols
);
1388 for (i
= 0; i
< nrelocs
; i
++)
1390 if (pe_dll_extra_pe_debug
)
1392 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1393 printf ("rel: %s\n", sym
->name
);
1395 if (!relocs
[i
]->howto
->pc_relative
1396 && relocs
[i
]->howto
->type
!= pe_details
->imagebase_reloc
)
1398 struct bfd_symbol
*sym
= *relocs
[i
]->sym_ptr_ptr
;
1400 /* Don't create relocs for undefined weak symbols. */
1401 if (sym
->flags
== BSF_WEAK
)
1403 struct bfd_link_hash_entry
*blhe
1404 = bfd_wrapped_link_hash_lookup (abfd
, info
, sym
->name
,
1405 FALSE
, FALSE
, FALSE
);
1406 if (blhe
&& blhe
->type
== bfd_link_hash_undefweak
)
1408 /* Check aux sym and see if it is defined or not. */
1409 struct coff_link_hash_entry
*h
, *h2
;
1410 h
= (struct coff_link_hash_entry
*)blhe
;
1411 if (h
->symbol_class
!= C_NT_WEAK
|| h
->numaux
!= 1)
1413 h2
= h
->auxbfd
->tdata
.coff_obj_data
->sym_hashes
1414 [h
->aux
->x_sym
.x_tagndx
.l
];
1415 /* We don't want a base reloc if the aux sym is not
1416 found, undefined, or if it is the constant ABS
1417 zero default value. (We broaden that slightly by
1418 not testing the value, just the section; there's
1419 no reason we'd want a reference to any absolute
1420 address to get relocated during rebasing). */
1421 if (!h2
|| h2
->root
.type
== bfd_link_hash_undefined
1422 || h2
->root
.u
.def
.section
== bfd_abs_section_ptr
)
1425 else if (!blhe
|| blhe
->type
!= bfd_link_hash_defined
)
1428 /* Nor for Dwarf FDE references to discarded sections. */
1429 else if (bfd_is_abs_section (sym
->section
->output_section
))
1431 /* We only ignore relocs from .eh_frame sections, as
1432 they are discarded by the final link rather than
1433 resolved against the kept section. */
1434 if (!strcmp (s
->name
, ".eh_frame"))
1438 reloc_data
[total_relocs
].vma
= sec_vma
+ relocs
[i
]->address
;
1440 #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift)
1442 switch BITS_AND_SHIFT (relocs
[i
]->howto
->bitsize
,
1443 relocs
[i
]->howto
->rightshift
)
1445 #ifdef pe_use_x86_64
1446 case BITS_AND_SHIFT (64, 0):
1447 reloc_data
[total_relocs
].type
= 10;
1451 case BITS_AND_SHIFT (32, 0):
1452 reloc_data
[total_relocs
].type
= 3;
1455 case BITS_AND_SHIFT (16, 0):
1456 reloc_data
[total_relocs
].type
= 2;
1459 case BITS_AND_SHIFT (16, 16):
1460 reloc_data
[total_relocs
].type
= 4;
1461 /* FIXME: we can't know the symbol's right value
1462 yet, but we probably can safely assume that
1463 CE will relocate us in 64k blocks, so leaving
1465 reloc_data
[total_relocs
].extra
= 0;
1468 case BITS_AND_SHIFT (26, 2):
1469 reloc_data
[total_relocs
].type
= 5;
1472 case BITS_AND_SHIFT (24, 2):
1473 /* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c
1474 Those ARM_xxx definitions should go in proper
1476 if (relocs
[i
]->howto
->type
== 0
1477 /* Older GNU linkers used 5 instead of 0 for this reloc. */
1478 || relocs
[i
]->howto
->type
== 5)
1479 /* This is an ARM_26D reloc, which is an ARM_26 reloc
1480 that has already been fully processed during a
1481 previous link stage, so ignore it here. */
1485 /* xgettext:c-format */
1486 einfo (_("%XError: %d-bit reloc in dll\n"),
1487 relocs
[i
]->howto
->bitsize
);
1493 /* Warning: the allocated symbols are remembered in BFD and
1494 reused later, so don't free them! */
1498 /* At this point, we have total_relocs relocation addresses in
1499 reloc_addresses, which are all suitable for the .reloc section.
1500 We must now create the new sections. */
1501 qsort (reloc_data
, total_relocs
, sizeof (*reloc_data
), reloc_sort
);
1503 for (i
= 0; i
< total_relocs
; i
++)
1505 bfd_vma this_page
= (reloc_data
[i
].vma
>> 12);
1507 if (this_page
!= sec_page
)
1509 reloc_sz
= (reloc_sz
+ 3) & ~3; /* 4-byte align. */
1511 sec_page
= this_page
;
1516 if (reloc_data
[i
].type
== 4)
1520 reloc_sz
= (reloc_sz
+ 3) & ~3; /* 4-byte align. */
1521 reloc_d
= xmalloc (reloc_sz
);
1522 sec_page
= (bfd_vma
) -1;
1524 page_ptr
= (bfd_vma
) -1;
1527 for (i
= 0; i
< total_relocs
; i
++)
1529 bfd_vma rva
= reloc_data
[i
].vma
- image_base
;
1530 bfd_vma this_page
= (rva
& ~0xfff);
1532 if (this_page
!= sec_page
)
1534 while (reloc_sz
& 3)
1535 reloc_d
[reloc_sz
++] = 0;
1537 if (page_ptr
!= (bfd_vma
) -1)
1538 bfd_put_32 (abfd
, reloc_sz
- page_ptr
, reloc_d
+ page_ptr
+ 4);
1540 bfd_put_32 (abfd
, this_page
, reloc_d
+ reloc_sz
);
1541 page_ptr
= reloc_sz
;
1543 sec_page
= this_page
;
1547 bfd_put_16 (abfd
, (rva
& 0xfff) + (reloc_data
[i
].type
<< 12),
1548 reloc_d
+ reloc_sz
);
1551 if (reloc_data
[i
].type
== 4)
1553 bfd_put_16 (abfd
, reloc_data
[i
].extra
, reloc_d
+ reloc_sz
);
1560 while (reloc_sz
& 3)
1561 reloc_d
[reloc_sz
++] = 0;
1563 if (page_ptr
!= (bfd_vma
) -1)
1564 bfd_put_32 (abfd
, reloc_sz
- page_ptr
, reloc_d
+ page_ptr
+ 4);
1566 while (reloc_sz
< reloc_s
->size
)
1567 reloc_d
[reloc_sz
++] = 0;
1570 /* Given the exiting def_file structure, print out a .DEF file that
1571 corresponds to it. */
1574 quoteput (char *s
, FILE *f
, int needs_quotes
)
1578 for (cp
= s
; *cp
; cp
++)
1593 if (*s
== '"' || *s
== '\\')
1607 pe_dll_generate_def_file (const char *pe_out_def_filename
)
1610 FILE *out
= fopen (pe_out_def_filename
, "w");
1613 /* xgettext:c-format */
1614 einfo (_("%s: Can't open output def file %s\n"),
1615 program_name
, pe_out_def_filename
);
1619 if (pe_def_file
->name
)
1621 if (pe_def_file
->is_dll
)
1622 fprintf (out
, "LIBRARY ");
1624 fprintf (out
, "NAME ");
1626 quoteput (pe_def_file
->name
, out
, 1);
1628 if (pe_data (link_info
.output_bfd
)->pe_opthdr
.ImageBase
)
1630 fprintf (out
, " BASE=0x");
1631 fprintf_vma (out
, ((bfd_vma
) pe_data (link_info
.output_bfd
)->pe_opthdr
.ImageBase
));
1633 fprintf (out
, "\n");
1636 if (pe_def_file
->description
)
1638 fprintf (out
, "DESCRIPTION ");
1639 quoteput (pe_def_file
->description
, out
, 1);
1640 fprintf (out
, "\n");
1643 if (pe_def_file
->version_minor
!= -1)
1644 fprintf (out
, "VERSION %d.%d\n", pe_def_file
->version_major
,
1645 pe_def_file
->version_minor
);
1646 else if (pe_def_file
->version_major
!= -1)
1647 fprintf (out
, "VERSION %d\n", pe_def_file
->version_major
);
1649 if (pe_def_file
->stack_reserve
!= -1 || pe_def_file
->heap_reserve
!= -1)
1650 fprintf (out
, "\n");
1652 if (pe_def_file
->stack_commit
!= -1)
1653 fprintf (out
, "STACKSIZE 0x%x,0x%x\n",
1654 pe_def_file
->stack_reserve
, pe_def_file
->stack_commit
);
1655 else if (pe_def_file
->stack_reserve
!= -1)
1656 fprintf (out
, "STACKSIZE 0x%x\n", pe_def_file
->stack_reserve
);
1658 if (pe_def_file
->heap_commit
!= -1)
1659 fprintf (out
, "HEAPSIZE 0x%x,0x%x\n",
1660 pe_def_file
->heap_reserve
, pe_def_file
->heap_commit
);
1661 else if (pe_def_file
->heap_reserve
!= -1)
1662 fprintf (out
, "HEAPSIZE 0x%x\n", pe_def_file
->heap_reserve
);
1664 if (pe_def_file
->num_section_defs
> 0)
1666 fprintf (out
, "\nSECTIONS\n\n");
1668 for (i
= 0; i
< pe_def_file
->num_section_defs
; i
++)
1671 quoteput (pe_def_file
->section_defs
[i
].name
, out
, 0);
1673 if (pe_def_file
->section_defs
[i
].class)
1675 fprintf (out
, " CLASS ");
1676 quoteput (pe_def_file
->section_defs
[i
].class, out
, 0);
1679 if (pe_def_file
->section_defs
[i
].flag_read
)
1680 fprintf (out
, " READ");
1682 if (pe_def_file
->section_defs
[i
].flag_write
)
1683 fprintf (out
, " WRITE");
1685 if (pe_def_file
->section_defs
[i
].flag_execute
)
1686 fprintf (out
, " EXECUTE");
1688 if (pe_def_file
->section_defs
[i
].flag_shared
)
1689 fprintf (out
, " SHARED");
1691 fprintf (out
, "\n");
1695 if (pe_def_file
->num_exports
> 0)
1697 fprintf (out
, "EXPORTS\n");
1699 for (i
= 0; i
< pe_def_file
->num_exports
; i
++)
1701 def_file_export
*e
= pe_def_file
->exports
+ i
;
1703 quoteput (e
->name
, out
, 0);
1705 if (e
->internal_name
&& strcmp (e
->internal_name
, e
->name
))
1707 fprintf (out
, " = ");
1708 quoteput (e
->internal_name
, out
, 0);
1711 if (e
->ordinal
!= -1)
1712 fprintf (out
, " @%d", e
->ordinal
);
1714 if (e
->flag_private
)
1715 fprintf (out
, " PRIVATE");
1717 if (e
->flag_constant
)
1718 fprintf (out
, " CONSTANT");
1721 fprintf (out
, " NONAME");
1724 fprintf (out
, " DATA");
1726 fprintf (out
, "\n");
1730 if (pe_def_file
->num_imports
> 0)
1732 fprintf (out
, "\nIMPORTS\n\n");
1734 for (i
= 0; i
< pe_def_file
->num_imports
; i
++)
1736 def_file_import
*im
= pe_def_file
->imports
+ i
;
1739 if (im
->internal_name
1740 && (!im
->name
|| strcmp (im
->internal_name
, im
->name
)))
1742 quoteput (im
->internal_name
, out
, 0);
1743 fprintf (out
, " = ");
1746 quoteput (im
->module
->name
, out
, 0);
1750 quoteput (im
->name
, out
, 0);
1752 fprintf (out
, "%d", im
->ordinal
);
1756 fprintf (out
, " == ");
1757 quoteput (im
->its_name
, out
, 0);
1760 fprintf (out
, "\n");
1765 fprintf (out
, _("; no contents available\n"));
1767 if (fclose (out
) == EOF
)
1768 /* xgettext:c-format */
1769 einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename
);
1772 /* Generate the import library. */
1774 static asymbol
**symtab
;
1777 static int tmp_seq2
;
1778 static const char *dll_filename
;
1779 static char *dll_symname
;
1781 #define UNDSEC bfd_und_section_ptr
1784 quick_section (bfd
*abfd
, const char *name
, int flags
, int align
)
1789 sec
= bfd_make_section_old_way (abfd
, name
);
1790 bfd_set_section_flags (abfd
, sec
, flags
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
);
1791 bfd_set_section_alignment (abfd
, sec
, align
);
1792 /* Remember to undo this before trying to link internally! */
1793 sec
->output_section
= sec
;
1795 sym
= bfd_make_empty_symbol (abfd
);
1796 symtab
[symptr
++] = sym
;
1797 sym
->name
= sec
->name
;
1799 sym
->flags
= BSF_LOCAL
;
1806 quick_symbol (bfd
*abfd
,
1815 char *name
= xmalloc (strlen (n1
) + strlen (n2
) + strlen (n3
) + 1);
1820 sym
= bfd_make_empty_symbol (abfd
);
1825 symtab
[symptr
++] = sym
;
1828 static arelent
*reltab
= 0;
1829 static int relcount
= 0, relsize
= 0;
1832 quick_reloc (bfd
*abfd
, bfd_size_type address
, int which_howto
, int symidx
)
1834 if (relcount
>= relsize
- 1)
1838 reltab
= xrealloc (reltab
, relsize
* sizeof (arelent
));
1840 reltab
= xmalloc (relsize
* sizeof (arelent
));
1842 reltab
[relcount
].address
= address
;
1843 reltab
[relcount
].addend
= 0;
1844 reltab
[relcount
].howto
= bfd_reloc_type_lookup (abfd
, which_howto
);
1845 reltab
[relcount
].sym_ptr_ptr
= symtab
+ symidx
;
1850 save_relocs (asection
*sec
)
1854 sec
->relocation
= reltab
;
1855 sec
->reloc_count
= relcount
;
1856 sec
->orelocation
= xmalloc ((relcount
+ 1) * sizeof (arelent
*));
1857 for (i
= 0; i
< relcount
; i
++)
1858 sec
->orelocation
[i
] = sec
->relocation
+ i
;
1859 sec
->orelocation
[relcount
] = 0;
1860 sec
->flags
|= SEC_RELOC
;
1862 relcount
= relsize
= 0;
1865 /* .section .idata$2
1866 .global __head_my_dll
1883 make_head (bfd
*parent
)
1885 asection
*id2
, *id5
, *id4
;
1886 unsigned char *d2
, *d5
, *d4
;
1890 oname
= xmalloc (20);
1891 sprintf (oname
, "d%06d.o", tmp_seq
);
1894 abfd
= bfd_create (oname
, parent
);
1895 bfd_find_target (pe_details
->object_target
, abfd
);
1896 bfd_make_writable (abfd
);
1898 bfd_set_format (abfd
, bfd_object
);
1899 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
1902 symtab
= xmalloc (6 * sizeof (asymbol
*));
1903 id2
= quick_section (abfd
, ".idata$2", SEC_HAS_CONTENTS
, 2);
1904 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
1905 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
1906 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", id2
, BSF_GLOBAL
, 0);
1907 quick_symbol (abfd
, U (""), dll_symname
, "_iname", UNDSEC
, BSF_GLOBAL
, 0);
1909 /* OK, pay attention here. I got confused myself looking back at
1910 it. We create a four-byte section to mark the beginning of the
1911 list, and we include an offset of 4 in the section, so that the
1912 pointer to the list points to the *end* of this section, which is
1913 the start of the list of sections from other objects. */
1915 bfd_set_section_size (abfd
, id2
, 20);
1919 if (pe_use_nul_prefixed_import_tables
)
1920 d2
[0] = d2
[16] = PE_IDATA5_SIZE
; /* Reloc addend. */
1921 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 2);
1922 quick_reloc (abfd
, 12, BFD_RELOC_RVA
, 4);
1923 quick_reloc (abfd
, 16, BFD_RELOC_RVA
, 1);
1926 if (pe_use_nul_prefixed_import_tables
)
1927 bfd_set_section_size (abfd
, id5
, PE_IDATA5_SIZE
);
1929 bfd_set_section_size (abfd
, id5
, 0);
1930 d5
= xmalloc (PE_IDATA5_SIZE
);
1932 memset (d5
, 0, PE_IDATA5_SIZE
);
1933 if (pe_use_nul_prefixed_import_tables
)
1934 bfd_set_section_size (abfd
, id4
, PE_IDATA4_SIZE
);
1936 bfd_set_section_size (abfd
, id4
, 0);
1937 d4
= xmalloc (PE_IDATA4_SIZE
);
1939 memset (d4
, 0, PE_IDATA4_SIZE
);
1941 bfd_set_symtab (abfd
, symtab
, symptr
);
1943 bfd_set_section_contents (abfd
, id2
, d2
, 0, 20);
1944 if (pe_use_nul_prefixed_import_tables
)
1946 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
1947 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
1951 bfd_set_section_contents (abfd
, id5
, d5
, 0, 0);
1952 bfd_set_section_contents (abfd
, id4
, d4
, 0, 0);
1955 bfd_make_readable (abfd
);
1959 /* .section .idata$4
1966 .global __my_dll_iname
1971 make_tail (bfd
*parent
)
1973 asection
*id4
, *id5
, *id7
;
1974 unsigned char *d4
, *d5
, *d7
;
1979 oname
= xmalloc (20);
1980 sprintf (oname
, "d%06d.o", tmp_seq
);
1983 abfd
= bfd_create (oname
, parent
);
1984 bfd_find_target (pe_details
->object_target
, abfd
);
1985 bfd_make_writable (abfd
);
1987 bfd_set_format (abfd
, bfd_object
);
1988 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
1991 symtab
= xmalloc (5 * sizeof (asymbol
*));
1992 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
1993 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
1994 id7
= quick_section (abfd
, ".idata$7", SEC_HAS_CONTENTS
, 2);
1995 quick_symbol (abfd
, U (""), dll_symname
, "_iname", id7
, BSF_GLOBAL
, 0);
1997 bfd_set_section_size (abfd
, id4
, PE_IDATA4_SIZE
);
1998 d4
= xmalloc (PE_IDATA4_SIZE
);
2000 memset (d4
, 0, PE_IDATA4_SIZE
);
2002 bfd_set_section_size (abfd
, id5
, PE_IDATA5_SIZE
);
2003 d5
= xmalloc (PE_IDATA5_SIZE
);
2005 memset (d5
, 0, PE_IDATA5_SIZE
);
2007 len
= strlen (dll_filename
) + 1;
2010 bfd_set_section_size (abfd
, id7
, len
);
2013 strcpy ((char *) d7
, dll_filename
);
2014 /* If len was odd, the above
2015 strcpy leaves behind an undefined byte. That is harmless,
2016 but we set it to 0 just so the binary dumps are pretty. */
2019 bfd_set_symtab (abfd
, symtab
, symptr
);
2021 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
2022 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
2023 bfd_set_section_contents (abfd
, id7
, d7
, 0, len
);
2025 bfd_make_readable (abfd
);
2031 .global ___imp_function
2032 .global __imp__function
2034 jmp *__imp__function:
2048 .asciz "function" xlate? (add underscore, kill at) */
2050 static const unsigned char jmp_ix86_bytes
[] =
2052 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
2060 .dw __imp_function */
2062 static const unsigned char jmp_sh_bytes
[] =
2064 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
2068 lui $t0,<high:__imp_function>
2069 lw $t0,<low:__imp_function>
2073 static const unsigned char jmp_mips_bytes
[] =
2075 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
2076 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
2079 static const unsigned char jmp_arm_bytes
[] =
2081 0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */
2082 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */
2088 make_one (def_file_export
*exp
, bfd
*parent
, bfd_boolean include_jmp_stub
)
2090 asection
*tx
, *id7
, *id5
, *id4
, *id6
;
2091 unsigned char *td
= NULL
, *d7
, *d5
, *d4
, *d6
= NULL
;
2095 const unsigned char *jmp_bytes
= NULL
;
2096 int jmp_byte_count
= 0;
2098 /* Include the jump stub section only if it is needed. A jump
2099 stub is needed if the symbol being imported <sym> is a function
2100 symbol and there is at least one undefined reference to that
2101 symbol. In other words, if all the import references to <sym> are
2102 explicitly through _declspec(dllimport) then the jump stub is not
2104 if (include_jmp_stub
)
2106 switch (pe_details
->pe_arch
)
2109 jmp_bytes
= jmp_ix86_bytes
;
2110 jmp_byte_count
= sizeof (jmp_ix86_bytes
);
2113 jmp_bytes
= jmp_sh_bytes
;
2114 jmp_byte_count
= sizeof (jmp_sh_bytes
);
2117 jmp_bytes
= jmp_mips_bytes
;
2118 jmp_byte_count
= sizeof (jmp_mips_bytes
);
2121 case PE_ARCH_arm_epoc
:
2122 case PE_ARCH_arm_wince
:
2123 jmp_bytes
= jmp_arm_bytes
;
2124 jmp_byte_count
= sizeof (jmp_arm_bytes
);
2131 oname
= xmalloc (20);
2132 sprintf (oname
, "d%06d.o", tmp_seq
);
2135 abfd
= bfd_create (oname
, parent
);
2136 bfd_find_target (pe_details
->object_target
, abfd
);
2137 bfd_make_writable (abfd
);
2139 bfd_set_format (abfd
, bfd_object
);
2140 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2143 symtab
= xmalloc (12 * sizeof (asymbol
*));
2145 tx
= quick_section (abfd
, ".text", SEC_CODE
| SEC_HAS_CONTENTS
| SEC_READONLY
, 2);
2146 id7
= quick_section (abfd
, ".idata$7", SEC_HAS_CONTENTS
, 2);
2147 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
2148 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2149 id6
= quick_section (abfd
, ".idata$6", SEC_HAS_CONTENTS
, 2);
2151 if (*exp
->internal_name
== '@')
2153 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", UNDSEC
,
2155 if (include_jmp_stub
)
2156 quick_symbol (abfd
, "", exp
->internal_name
, "", tx
, BSF_GLOBAL
, 0);
2157 quick_symbol (abfd
, "__imp_", exp
->internal_name
, "", id5
,
2159 /* Fastcall applies only to functions,
2160 so no need for auto-import symbol. */
2164 quick_symbol (abfd
, U ("_head_"), dll_symname
, "", UNDSEC
,
2166 if (include_jmp_stub
)
2167 quick_symbol (abfd
, U (""), exp
->internal_name
, "", tx
,
2169 quick_symbol (abfd
, "__imp_", U (""), exp
->internal_name
, id5
,
2171 /* Symbol to reference ord/name of imported
2172 data symbol, used to implement auto-import. */
2174 quick_symbol (abfd
, "__nm_", U (""), exp
->internal_name
, id6
,
2177 if (pe_dll_compat_implib
)
2178 quick_symbol (abfd
, "___imp_", exp
->internal_name
, "", id5
,
2181 if (include_jmp_stub
)
2183 bfd_set_section_size (abfd
, tx
, jmp_byte_count
);
2184 td
= xmalloc (jmp_byte_count
);
2186 memcpy (td
, jmp_bytes
, jmp_byte_count
);
2188 switch (pe_details
->pe_arch
)
2191 #ifdef pe_use_x86_64
2192 quick_reloc (abfd
, 2, BFD_RELOC_32_PCREL
, 2);
2194 /* Mark this object as SAFESEH compatible. */
2195 quick_symbol (abfd
, "", "@feat.00", "", bfd_abs_section_ptr
,
2197 quick_reloc (abfd
, 2, BFD_RELOC_32
, 2);
2201 quick_reloc (abfd
, 8, BFD_RELOC_32
, 2);
2204 quick_reloc (abfd
, 0, BFD_RELOC_HI16_S
, 2);
2205 quick_reloc (abfd
, 0, BFD_RELOC_LO16
, 0); /* MIPS_R_PAIR */
2206 quick_reloc (abfd
, 4, BFD_RELOC_LO16
, 2);
2209 case PE_ARCH_arm_epoc
:
2210 case PE_ARCH_arm_wince
:
2211 quick_reloc (abfd
, 8, BFD_RELOC_32
, 2);
2219 bfd_set_section_size (abfd
, tx
, 0);
2221 bfd_set_section_size (abfd
, id7
, 4);
2225 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 5);
2228 bfd_set_section_size (abfd
, id5
, PE_IDATA5_SIZE
);
2229 d5
= xmalloc (PE_IDATA5_SIZE
);
2231 memset (d5
, 0, PE_IDATA5_SIZE
);
2233 if (exp
->flag_noname
)
2235 d5
[0] = exp
->ordinal
;
2236 d5
[1] = exp
->ordinal
>> 8;
2237 d5
[PE_IDATA5_SIZE
- 1] = 0x80;
2241 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 4);
2245 bfd_set_section_size (abfd
, id4
, PE_IDATA4_SIZE
);
2246 d4
= xmalloc (PE_IDATA4_SIZE
);
2248 memset (d4
, 0, PE_IDATA4_SIZE
);
2250 if (exp
->flag_noname
)
2252 d4
[0] = exp
->ordinal
;
2253 d4
[1] = exp
->ordinal
>> 8;
2254 d4
[PE_IDATA4_SIZE
- 1] = 0x80;
2258 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 4);
2262 if (exp
->flag_noname
)
2265 bfd_set_section_size (abfd
, id6
, 0);
2271 /* { short, asciz } */
2273 len
= 2 + strlen (exp
->its_name
) + 1;
2275 len
= 2 + strlen (exp
->name
) + 1;
2278 bfd_set_section_size (abfd
, id6
, len
);
2281 memset (d6
, 0, len
);
2283 /* PR 20880: Use exp->hint as a backup, just in case exp->ordinal
2284 contains an invalid value (-1). */
2285 ord
= (exp
->ordinal
>= 0) ? exp
->ordinal
: exp
->hint
;
2290 strcpy ((char*) d6
+ 2, exp
->its_name
);
2292 strcpy ((char *) d6
+ 2, exp
->name
);
2295 bfd_set_symtab (abfd
, symtab
, symptr
);
2297 if (include_jmp_stub
)
2298 bfd_set_section_contents (abfd
, tx
, td
, 0, jmp_byte_count
);
2299 bfd_set_section_contents (abfd
, id7
, d7
, 0, 4);
2300 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA5_SIZE
);
2301 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
);
2302 if (!exp
->flag_noname
)
2303 bfd_set_section_contents (abfd
, id6
, d6
, 0, len
);
2305 bfd_make_readable (abfd
);
2310 make_singleton_name_imp (const char *import
, bfd
*parent
)
2312 /* Name thunks go to idata$4. */
2318 oname
= xmalloc (20);
2319 sprintf (oname
, "nmimp%06d.o", tmp_seq2
);
2322 abfd
= bfd_create (oname
, parent
);
2323 bfd_find_target (pe_details
->object_target
, abfd
);
2324 bfd_make_writable (abfd
);
2326 bfd_set_format (abfd
, bfd_object
);
2327 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2330 symtab
= xmalloc (3 * sizeof (asymbol
*));
2331 id5
= quick_section (abfd
, ".idata$5", SEC_HAS_CONTENTS
, 2);
2332 quick_symbol (abfd
, "__imp_", import
, "", id5
, BSF_GLOBAL
, 0);
2334 /* We need space for the real thunk and for the null terminator. */
2335 bfd_set_section_size (abfd
, id5
, PE_IDATA5_SIZE
* 2);
2336 d5
= xmalloc (PE_IDATA5_SIZE
* 2);
2338 memset (d5
, 0, PE_IDATA5_SIZE
* 2);
2339 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 2);
2342 bfd_set_symtab (abfd
, symtab
, symptr
);
2344 bfd_set_section_contents (abfd
, id5
, d5
, 0, PE_IDATA4_SIZE
* 2);
2346 bfd_make_readable (abfd
);
2351 make_singleton_name_thunk (const char *import
, bfd
*parent
)
2353 /* Name thunks go to idata$4. */
2359 oname
= xmalloc (20);
2360 sprintf (oname
, "nmth%06d.o", tmp_seq
);
2363 abfd
= bfd_create (oname
, parent
);
2364 bfd_find_target (pe_details
->object_target
, abfd
);
2365 bfd_make_writable (abfd
);
2367 bfd_set_format (abfd
, bfd_object
);
2368 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2371 symtab
= xmalloc (3 * sizeof (asymbol
*));
2372 id4
= quick_section (abfd
, ".idata$4", SEC_HAS_CONTENTS
, 2);
2373 quick_symbol (abfd
, "__nm_thnk_", import
, "", id4
, BSF_GLOBAL
, 0);
2374 quick_symbol (abfd
, "__nm_", import
, "", UNDSEC
, BSF_GLOBAL
, 0);
2376 /* We need space for the real thunk and for the null terminator. */
2377 bfd_set_section_size (abfd
, id4
, PE_IDATA4_SIZE
* 2);
2378 d4
= xmalloc (PE_IDATA4_SIZE
* 2);
2380 memset (d4
, 0, PE_IDATA4_SIZE
* 2);
2381 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 2);
2384 bfd_set_symtab (abfd
, symtab
, symptr
);
2386 bfd_set_section_contents (abfd
, id4
, d4
, 0, PE_IDATA4_SIZE
* 2);
2388 bfd_make_readable (abfd
);
2393 make_import_fixup_mark (arelent
*rel
)
2395 /* We convert reloc to symbol, for later reference. */
2397 static char *fixup_name
= NULL
;
2398 static size_t buffer_len
= 0;
2400 struct bfd_symbol
*sym
= *rel
->sym_ptr_ptr
;
2402 bfd
*abfd
= bfd_asymbol_bfd (sym
);
2403 struct bfd_link_hash_entry
*bh
;
2407 fixup_name
= xmalloc (384);
2411 if (strlen (sym
->name
) + 25 > buffer_len
)
2412 /* Assume 25 chars for "__fu" + counter + "_". If counter is
2413 bigger than 20 digits long, we've got worse problems than
2414 overflowing this buffer... */
2417 /* New buffer size is length of symbol, plus 25, but
2418 then rounded up to the nearest multiple of 128. */
2419 buffer_len
= ((strlen (sym
->name
) + 25) + 127) & ~127;
2420 fixup_name
= xmalloc (buffer_len
);
2423 sprintf (fixup_name
, "__fu%d_%s", counter
++, sym
->name
);
2426 bfd_coff_link_add_one_symbol (&link_info
, abfd
, fixup_name
, BSF_GLOBAL
,
2427 current_sec
, /* sym->section, */
2428 rel
->address
, NULL
, TRUE
, FALSE
, &bh
);
2433 /* .section .idata$2
2434 .rva __nm_thnk_SYM (singleton thunk with name of func)
2437 .rva __my_dll_iname (name of dll)
2438 .rva __fuNN_SYM (pointer to reference (address) in text) */
2441 make_import_fixup_entry (const char *name
,
2442 const char *fixup_name
,
2443 const char *symname
,
2451 oname
= xmalloc (20);
2452 sprintf (oname
, "fu%06d.o", tmp_seq
);
2455 abfd
= bfd_create (oname
, parent
);
2456 bfd_find_target (pe_details
->object_target
, abfd
);
2457 bfd_make_writable (abfd
);
2459 bfd_set_format (abfd
, bfd_object
);
2460 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2463 symtab
= xmalloc (6 * sizeof (asymbol
*));
2464 id2
= quick_section (abfd
, ".idata$2", SEC_HAS_CONTENTS
, 2);
2466 quick_symbol (abfd
, "__nm_thnk_", name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2467 quick_symbol (abfd
, U (""), symname
, "_iname", UNDSEC
, BSF_GLOBAL
, 0);
2468 /* For relocator v2 we have to use the .idata$5 element and not
2470 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2471 quick_symbol (abfd
, "__imp_", name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2473 quick_symbol (abfd
, "", fixup_name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2475 bfd_set_section_size (abfd
, id2
, 20);
2480 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 1);
2481 quick_reloc (abfd
, 12, BFD_RELOC_RVA
, 2);
2482 quick_reloc (abfd
, 16, BFD_RELOC_RVA
, 3);
2485 bfd_set_symtab (abfd
, symtab
, symptr
);
2487 bfd_set_section_contents (abfd
, id2
, d2
, 0, 20);
2489 bfd_make_readable (abfd
);
2493 /* .section .rdata_runtime_pseudo_reloc
2495 .rva __fuNN_SYM (pointer to reference (address) in text) */
2498 make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED
,
2499 const char *fixup_name
,
2500 bfd_vma addend ATTRIBUTE_UNUSED
,
2505 unsigned char *rt_rel_d
;
2508 oname
= xmalloc (20);
2509 sprintf (oname
, "rtr%06d.o", tmp_seq
);
2512 abfd
= bfd_create (oname
, parent
);
2513 bfd_find_target (pe_details
->object_target
, abfd
);
2514 bfd_make_writable (abfd
);
2516 bfd_set_format (abfd
, bfd_object
);
2517 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2520 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2522 symtab
= xmalloc ((runtime_pseudp_reloc_v2_init
? 3 : 6) * sizeof (asymbol
*));
2526 symtab
= xmalloc (2 * sizeof (asymbol
*));
2528 rt_rel
= quick_section (abfd
, ".rdata_runtime_pseudo_reloc",
2529 SEC_HAS_CONTENTS
, 2);
2531 quick_symbol (abfd
, "", fixup_name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2533 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2536 if (! runtime_pseudp_reloc_v2_init
)
2539 runtime_pseudp_reloc_v2_init
= 1;
2541 quick_symbol (abfd
, "__imp_", name
, "", UNDSEC
, BSF_GLOBAL
, 0);
2543 bfd_set_section_size (abfd
, rt_rel
, size
);
2544 rt_rel_d
= xmalloc (size
);
2545 rt_rel
->contents
= rt_rel_d
;
2546 memset (rt_rel_d
, 0, size
);
2547 quick_reloc (abfd
, size
- 8, BFD_RELOC_RVA
, 1);
2548 quick_reloc (abfd
, size
- 12, BFD_RELOC_RVA
, 2);
2549 bfd_put_32 (abfd
, bitsize
, rt_rel_d
+ (size
- 4));
2551 bfd_put_32 (abfd
, 1, rt_rel_d
+ 8);
2552 save_relocs (rt_rel
);
2554 bfd_set_symtab (abfd
, symtab
, symptr
);
2556 bfd_set_section_contents (abfd
, rt_rel
, rt_rel_d
, 0, size
);
2560 bfd_set_section_size (abfd
, rt_rel
, 8);
2561 rt_rel_d
= xmalloc (8);
2562 rt_rel
->contents
= rt_rel_d
;
2563 memset (rt_rel_d
, 0, 8);
2565 bfd_put_32 (abfd
, addend
, rt_rel_d
);
2566 quick_reloc (abfd
, 4, BFD_RELOC_RVA
, 1);
2568 save_relocs (rt_rel
);
2570 bfd_set_symtab (abfd
, symtab
, symptr
);
2572 bfd_set_section_contents (abfd
, rt_rel
, rt_rel_d
, 0, 8);
2574 bfd_make_readable (abfd
);
2579 .rva __pei386_runtime_relocator */
2582 pe_create_runtime_relocator_reference (bfd
*parent
)
2584 asection
*extern_rt_rel
;
2585 unsigned char *extern_rt_rel_d
;
2589 oname
= xmalloc (20);
2590 sprintf (oname
, "ertr%06d.o", tmp_seq
);
2593 abfd
= bfd_create (oname
, parent
);
2594 bfd_find_target (pe_details
->object_target
, abfd
);
2595 bfd_make_writable (abfd
);
2597 bfd_set_format (abfd
, bfd_object
);
2598 bfd_set_arch_mach (abfd
, pe_details
->bfd_arch
, 0);
2601 symtab
= xmalloc (2 * sizeof (asymbol
*));
2602 extern_rt_rel
= quick_section (abfd
, ".rdata", SEC_HAS_CONTENTS
, 2);
2604 quick_symbol (abfd
, "", U ("_pei386_runtime_relocator"), "", UNDSEC
,
2607 bfd_set_section_size (abfd
, extern_rt_rel
, PE_IDATA5_SIZE
);
2608 extern_rt_rel_d
= xcalloc (1, PE_IDATA5_SIZE
);
2609 extern_rt_rel
->contents
= extern_rt_rel_d
;
2611 quick_reloc (abfd
, 0, BFD_RELOC_RVA
, 1);
2612 save_relocs (extern_rt_rel
);
2614 bfd_set_symtab (abfd
, symtab
, symptr
);
2616 bfd_set_section_contents (abfd
, extern_rt_rel
, extern_rt_rel_d
, 0, PE_IDATA5_SIZE
);
2618 bfd_make_readable (abfd
);
2623 pe_create_import_fixup (arelent
*rel
, asection
*s
, bfd_vma addend
)
2626 struct bfd_symbol
*sym
= *rel
->sym_ptr_ptr
;
2627 struct bfd_link_hash_entry
*name_thunk_sym
;
2628 struct bfd_link_hash_entry
*name_imp_sym
;
2629 const char *name
= sym
->name
;
2630 char *fixup_name
= make_import_fixup_mark (rel
);
2632 int need_import_table
= 1;
2634 sprintf (buf
, "__imp_%s", name
);
2635 name_imp_sym
= bfd_link_hash_lookup (link_info
.hash
, buf
, 0, 0, 1);
2637 sprintf (buf
, "__nm_thnk_%s", name
);
2639 name_thunk_sym
= bfd_link_hash_lookup (link_info
.hash
, buf
, 0, 0, 1);
2641 /* For version 2 pseudo relocation we don't need to add an import
2642 if the import symbol is already present. */
2643 if (link_info
.pei386_runtime_pseudo_reloc
== 2
2645 && name_imp_sym
->type
== bfd_link_hash_defined
)
2646 need_import_table
= 0;
2648 if (need_import_table
== 1
2649 && (!name_thunk_sym
|| name_thunk_sym
->type
!= bfd_link_hash_defined
))
2651 b
= make_singleton_name_thunk (name
, link_info
.output_bfd
);
2652 add_bfd_to_link (b
, b
->filename
, &link_info
);
2654 /* If we ever use autoimport, we have to cast text section writable.
2655 But not for version 2. */
2656 if (link_info
.pei386_runtime_pseudo_reloc
!= 2)
2658 config
.text_read_only
= FALSE
;
2659 link_info
.output_bfd
->flags
&= ~WP_TEXT
;
2661 if (link_info
.pei386_runtime_pseudo_reloc
== 2)
2663 b
= make_singleton_name_imp (name
, link_info
.output_bfd
);
2664 add_bfd_to_link (b
, b
->filename
, &link_info
);
2668 if ((addend
== 0 || link_info
.pei386_runtime_pseudo_reloc
)
2669 && need_import_table
== 1)
2671 extern char * pe_data_import_dll
;
2672 char * symname
= pe_data_import_dll
? pe_data_import_dll
: "unknown";
2674 b
= make_import_fixup_entry (name
, fixup_name
, symname
,
2675 link_info
.output_bfd
);
2676 add_bfd_to_link (b
, b
->filename
, &link_info
);
2679 if ((link_info
.pei386_runtime_pseudo_reloc
!= 0 && addend
!= 0)
2680 || link_info
.pei386_runtime_pseudo_reloc
== 2)
2682 if (pe_dll_extra_pe_debug
)
2683 printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n",
2684 fixup_name
, (int) addend
);
2686 b
= make_runtime_pseudo_reloc (name
, fixup_name
, addend
, rel
->howto
->bitsize
,
2687 link_info
.output_bfd
);
2688 add_bfd_to_link (b
, b
->filename
, &link_info
);
2690 if (runtime_pseudo_relocs_created
== 0)
2692 b
= pe_create_runtime_relocator_reference (link_info
.output_bfd
);
2693 add_bfd_to_link (b
, b
->filename
, &link_info
);
2695 runtime_pseudo_relocs_created
++;
2697 else if (addend
!= 0)
2699 einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
2700 s
->owner
, s
, rel
->address
, sym
->name
);
2707 pe_dll_generate_implib (def_file
*def
, const char *impfilename
, struct bfd_link_info
*info
)
2716 dll_filename
= (def
->name
) ? def
->name
: dll_name
;
2717 dll_symname
= xstrdup (dll_filename
);
2718 for (i
= 0; dll_symname
[i
]; i
++)
2719 if (!ISALNUM (dll_symname
[i
]))
2720 dll_symname
[i
] = '_';
2722 unlink_if_ordinary (impfilename
);
2724 outarch
= bfd_openw (impfilename
, 0);
2728 /* xgettext:c-format */
2729 einfo (_("%XCan't open .lib file: %s\n"), impfilename
);
2734 /* xgettext:c-format */
2735 info_msg (_("Creating library file: %s\n"), impfilename
);
2737 bfd_set_format (outarch
, bfd_archive
);
2738 outarch
->has_armap
= 1;
2740 /* Work out a reasonable size of things to put onto one line. */
2741 ar_head
= make_head (outarch
);
2743 /* Iterate the input BFDs, looking for exclude-modules-for-implib. */
2744 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2746 /* Iterate the exclude list. */
2747 struct exclude_list_struct
*ex
;
2749 for (ex
= excludes
, found
= 0; ex
&& !found
; ex
= ex
->next
)
2751 if (ex
->type
!= EXCLUDEFORIMPLIB
)
2753 found
= (filename_cmp (ex
->string
, ibfd
->filename
) == 0);
2755 /* If it matched, we must open a fresh BFD for it (the original
2756 input BFD is still needed for the DLL's final link) and add
2757 it into the archive member chain. */
2760 bfd
*newbfd
= bfd_openr (ibfd
->my_archive
2761 ? ibfd
->my_archive
->filename
: ibfd
->filename
, NULL
);
2764 einfo (_("%Xbfd_openr %s: %E\n"), ibfd
->filename
);
2767 if (ibfd
->my_archive
)
2769 /* Must now iterate through archive until we find the
2770 required member. A minor shame that we'll open the
2771 archive once per member that we require from it, and
2772 leak those archive bfds rather than reuse them. */
2773 bfd
*arbfd
= newbfd
;
2774 if (!bfd_check_format_matches (arbfd
, bfd_archive
, NULL
))
2776 einfo (_("%X%s(%s): can't find member in non-archive file"),
2777 ibfd
->my_archive
->filename
, ibfd
->filename
);
2781 while ((newbfd
= bfd_openr_next_archived_file (arbfd
, newbfd
)) != 0)
2783 if (filename_cmp (newbfd
->filename
, ibfd
->filename
) == 0)
2788 einfo (_("%X%s(%s): can't find member in archive"),
2789 ibfd
->my_archive
->filename
, ibfd
->filename
);
2793 newbfd
->archive_next
= head
;
2798 for (i
= 0; i
< def
->num_exports
; i
++)
2800 /* The import library doesn't know about the internal name. */
2801 char *internal
= def
->exports
[i
].internal_name
;
2804 /* Don't add PRIVATE entries to import lib. */
2805 if (pe_def_file
->exports
[i
].flag_private
)
2808 def
->exports
[i
].internal_name
= def
->exports
[i
].name
;
2810 /* PR 19803: If a symbol has been discard due to garbage
2811 collection then do not create any exports for it. */
2813 struct coff_link_hash_entry
*h
;
2815 h
= coff_link_hash_lookup (coff_hash_table (info
), internal
,
2816 FALSE
, FALSE
, FALSE
);
2818 /* If the symbol is hidden and undefined then it
2819 has been swept up by garbage collection. */
2820 && h
->symbol_class
== C_HIDDEN
2821 && h
->root
.u
.def
.section
== bfd_und_section_ptr
)
2824 /* If necessary, check with an underscore prefix as well. */
2825 if (pe_details
->underscored
&& internal
[0] != '@')
2829 name
= xmalloc (strlen (internal
) + 2);
2830 sprintf (name
, "_%s", internal
);
2832 h
= coff_link_hash_lookup (coff_hash_table (info
), name
,
2833 FALSE
, FALSE
, FALSE
);
2837 /* If the symbol is hidden and undefined then it
2838 has been swept up by garbage collection. */
2839 && h
->symbol_class
== C_HIDDEN
2840 && h
->root
.u
.def
.section
== bfd_und_section_ptr
)
2845 n
= make_one (def
->exports
+ i
, outarch
,
2846 ! (def
->exports
+ i
)->flag_data
);
2847 n
->archive_next
= head
;
2849 def
->exports
[i
].internal_name
= internal
;
2852 ar_tail
= make_tail (outarch
);
2854 if (ar_head
== NULL
|| ar_tail
== NULL
)
2857 /* Now stick them all into the archive. */
2858 ar_head
->archive_next
= head
;
2859 ar_tail
->archive_next
= ar_head
;
2862 if (! bfd_set_archive_head (outarch
, head
))
2863 einfo ("%Xbfd_set_archive_head: %E\n");
2865 if (! bfd_close (outarch
))
2866 einfo ("%Xbfd_close %s: %E\n", impfilename
);
2868 while (head
!= NULL
)
2870 bfd
*n
= head
->archive_next
;
2876 static int undef_count
= 0;
2884 static struct key_value
*udef_table
;
2886 static int undef_sort_cmp (const void *l1
, const void *r1
)
2888 const struct key_value
*l
= l1
;
2889 const struct key_value
*r
= r1
;
2891 return strcmp (l
->key
, r
->key
);
2894 static struct bfd_link_hash_entry
*
2895 pe_find_cdecl_alias_match (struct bfd_link_info
*linfo
, char *name
)
2897 struct bfd_link_hash_entry
*h
= NULL
;
2898 struct key_value
*kv
;
2899 struct key_value key
;
2900 char *at
, *lname
= xmalloc (strlen (name
) + 3);
2902 strcpy (lname
, name
);
2904 at
= strchr (lname
+ (lname
[0] == '@'), '@');
2909 kv
= bsearch (&key
, udef_table
, undef_count
, sizeof (struct key_value
),
2914 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
2915 if (h
->type
== bfd_link_hash_undefined
)
2919 if (lname
[0] == '?')
2922 if (at
|| lname
[0] == '@')
2924 if (lname
[0] == '@')
2926 if (pe_details
->underscored
)
2929 strcpy (lname
, lname
+ 1);
2931 kv
= bsearch (&key
, udef_table
, undef_count
,
2932 sizeof (struct key_value
), undef_sort_cmp
);
2935 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
2936 if (h
->type
== bfd_link_hash_undefined
)
2941 *strchr (lname
, '@') = 0;
2943 kv
= bsearch (&key
, udef_table
, undef_count
,
2944 sizeof (struct key_value
), undef_sort_cmp
);
2947 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
2948 if (h
->type
== bfd_link_hash_undefined
)
2954 strcat (lname
, "@");
2956 kv
= bsearch (&key
, udef_table
, undef_count
,
2957 sizeof (struct key_value
), undef_sort_cmp
);
2961 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
2962 if (h
->type
== bfd_link_hash_undefined
)
2966 if (lname
[0] == '_' && pe_details
->underscored
)
2970 memmove (lname
+ 1, lname
, strlen (lname
) + 1);
2975 kv
= bsearch (&key
, udef_table
, undef_count
,
2976 sizeof (struct key_value
), undef_sort_cmp
);
2980 h
= bfd_link_hash_lookup (linfo
->hash
, kv
->oname
, FALSE
, FALSE
, FALSE
);
2981 if (h
->type
== bfd_link_hash_undefined
)
2993 pe_undef_count (struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2994 void *inf ATTRIBUTE_UNUSED
)
2996 if (h
->type
== bfd_link_hash_undefined
)
3002 pe_undef_fill (struct bfd_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
3004 if (h
->type
== bfd_link_hash_undefined
)
3008 udef_table
[undef_count
].key
= xstrdup (h
->root
.string
);
3009 at
= strchr (udef_table
[undef_count
].key
3010 + (udef_table
[undef_count
].key
[0] == '@'), '@');
3013 udef_table
[undef_count
].oname
= h
->root
.string
;
3020 pe_create_undef_table (void)
3024 /* count undefined symbols */
3026 bfd_link_hash_traverse (link_info
.hash
, pe_undef_count
, "");
3028 /* create and fill the corresponding table */
3029 udef_table
= xmalloc (undef_count
* sizeof (struct key_value
));
3032 bfd_link_hash_traverse (link_info
.hash
, pe_undef_fill
, "");
3035 qsort (udef_table
, undef_count
, sizeof (struct key_value
), undef_sort_cmp
);
3039 add_bfd_to_link (bfd
*abfd
, const char *name
, struct bfd_link_info
*linfo
)
3041 lang_input_statement_type
*fake_file
;
3043 fake_file
= lang_add_input_file (name
,
3044 lang_input_file_is_fake_enum
,
3046 fake_file
->the_bfd
= abfd
;
3047 ldlang_add_file (fake_file
);
3049 if (!bfd_link_add_symbols (abfd
, linfo
))
3050 einfo ("%Xaddsym %s: %E\n", name
);
3054 pe_process_import_defs (bfd
*output_bfd
, struct bfd_link_info
*linfo
)
3057 def_file_module
*module
;
3058 def_file_import
*imp
;
3060 pe_dll_id_target (bfd_get_target (output_bfd
));
3065 imp
= pe_def_file
->imports
;
3067 pe_create_undef_table ();
3069 for (module
= pe_def_file
->modules
; module
; module
= module
->next
)
3071 int do_this_dll
= 0;
3073 for (i
= 0; i
< pe_def_file
->num_imports
&& imp
[i
].module
!= module
; i
++)
3075 if (i
>= pe_def_file
->num_imports
)
3078 dll_filename
= module
->name
;
3079 dll_symname
= xstrdup (module
->name
);
3080 for (j
= 0; dll_symname
[j
]; j
++)
3081 if (!ISALNUM (dll_symname
[j
]))
3082 dll_symname
[j
] = '_';
3084 for (; i
< pe_def_file
->num_imports
&& imp
[i
].module
== module
; i
++)
3086 def_file_export exp
;
3087 struct bfd_link_hash_entry
*blhe
;
3088 int lead_at
= (*imp
[i
].internal_name
== '@');
3089 /* See if we need this import. */
3090 size_t len
= strlen (imp
[i
].internal_name
);
3091 char *name
= xmalloc (len
+ 2 + 6);
3092 bfd_boolean include_jmp_stub
= FALSE
;
3093 bfd_boolean is_cdecl
= FALSE
;
3094 bfd_boolean is_undef
= FALSE
;
3096 if (!lead_at
&& strchr (imp
[i
].internal_name
, '@') == NULL
)
3100 sprintf (name
, "%s", imp
[i
].internal_name
);
3102 sprintf (name
, "%s%s",U (""), imp
[i
].internal_name
);
3104 blhe
= bfd_link_hash_lookup (linfo
->hash
, name
,
3105 FALSE
, FALSE
, FALSE
);
3107 /* Include the jump stub for <sym> only if the <sym>
3109 if (!blhe
|| (blhe
&& blhe
->type
!= bfd_link_hash_undefined
))
3112 sprintf (name
, "%s%s", "__imp_", imp
[i
].internal_name
);
3114 sprintf (name
, "%s%s%s", "__imp_", U (""),
3115 imp
[i
].internal_name
);
3117 blhe
= bfd_link_hash_lookup (linfo
->hash
, name
,
3118 FALSE
, FALSE
, FALSE
);
3120 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3124 include_jmp_stub
= TRUE
;
3125 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3128 if (is_cdecl
&& (!blhe
|| (blhe
&& blhe
->type
!= bfd_link_hash_undefined
)))
3130 sprintf (name
, "%s%s",U (""), imp
[i
].internal_name
);
3131 blhe
= pe_find_cdecl_alias_match (linfo
, name
);
3132 include_jmp_stub
= TRUE
;
3134 is_undef
= (blhe
->type
== bfd_link_hash_undefined
);
3145 bfd
*ar_head
= make_head (output_bfd
);
3146 add_bfd_to_link (ar_head
, ar_head
->filename
, linfo
);
3149 exp
.internal_name
= imp
[i
].internal_name
;
3150 exp
.name
= imp
[i
].name
;
3151 exp
.its_name
= imp
[i
].its_name
;
3152 exp
.ordinal
= imp
[i
].ordinal
;
3153 exp
.hint
= exp
.ordinal
>= 0 ? exp
.ordinal
: 0;
3154 exp
.flag_private
= 0;
3155 exp
.flag_constant
= 0;
3156 exp
.flag_data
= imp
[i
].data
;
3157 exp
.flag_noname
= exp
.name
? 0 : 1;
3158 one
= make_one (&exp
, output_bfd
, (! exp
.flag_data
) && include_jmp_stub
);
3159 add_bfd_to_link (one
, one
->filename
, linfo
);
3164 bfd
*ar_tail
= make_tail (output_bfd
);
3165 add_bfd_to_link (ar_tail
, ar_tail
->filename
, linfo
);
3174 free (udef_table
[undef_count
].key
);
3179 /* We were handed a *.DLL file. Parse it and turn it into a set of
3180 IMPORTS directives in the def file. Return TRUE if the file was
3181 handled, FALSE if not. */
3184 pe_get16 (bfd
*abfd
, int where
)
3188 bfd_seek (abfd
, (file_ptr
) where
, SEEK_SET
);
3189 bfd_bread (b
, (bfd_size_type
) 2, abfd
);
3190 return b
[0] + (b
[1] << 8);
3194 pe_get32 (bfd
*abfd
, int where
)
3198 bfd_seek (abfd
, (file_ptr
) where
, SEEK_SET
);
3199 bfd_bread (b
, (bfd_size_type
) 4, abfd
);
3200 return b
[0] + (b
[1] << 8) + (b
[2] << 16) + (b
[3] << 24);
3206 unsigned char *b
= ptr
;
3208 return b
[0] + (b
[1] << 8) + (b
[2] << 16) + (b
[3] << 24);
3212 pe_implied_import_dll (const char *filename
)
3215 bfd_vma pe_header_offset
, opthdr_ofs
, num_entries
, i
;
3216 bfd_vma export_rva
, export_size
, nsections
, secptr
, expptr
;
3217 bfd_vma exp_funcbase
;
3218 unsigned char *expdata
;
3220 bfd_vma name_rvas
, nexp
;
3221 const char *dllname
;
3222 /* Initialization with start > end guarantees that is_data
3223 will not be set by mistake, and avoids compiler warning. */
3224 bfd_vma data_start
= 1;
3225 bfd_vma data_end
= 0;
3226 bfd_vma rdata_start
= 1;
3227 bfd_vma rdata_end
= 0;
3228 bfd_vma bss_start
= 1;
3229 bfd_vma bss_end
= 0;
3231 /* No, I can't use bfd here. kernel32.dll puts its export table in
3232 the middle of the .rdata section. */
3233 dll
= bfd_openr (filename
, pe_details
->target_name
);
3236 einfo ("%Xopen %s: %E\n", filename
);
3240 /* PEI dlls seem to be bfd_objects. */
3241 if (!bfd_check_format (dll
, bfd_object
))
3243 einfo ("%X%s: this doesn't appear to be a DLL\n", filename
);
3247 /* Get pe_header, optional header and numbers of directory entries. */
3248 pe_header_offset
= pe_get32 (dll
, 0x3c);
3249 opthdr_ofs
= pe_header_offset
+ 4 + 20;
3250 #ifdef pe_use_x86_64
3251 num_entries
= pe_get32 (dll
, opthdr_ofs
+ 92 + 4 * 4); /* & NumberOfRvaAndSizes. */
3253 num_entries
= pe_get32 (dll
, opthdr_ofs
+ 92);
3256 /* No import or export directory entry. */
3257 if (num_entries
< 1)
3260 #ifdef pe_use_x86_64
3261 export_rva
= pe_get32 (dll
, opthdr_ofs
+ 96 + 4 * 4);
3262 export_size
= pe_get32 (dll
, opthdr_ofs
+ 100 + 4 * 4);
3264 export_rva
= pe_get32 (dll
, opthdr_ofs
+ 96);
3265 export_size
= pe_get32 (dll
, opthdr_ofs
+ 100);
3268 /* No export table - nothing to export. */
3269 if (export_size
== 0)
3272 nsections
= pe_get16 (dll
, pe_header_offset
+ 4 + 2);
3273 secptr
= (pe_header_offset
+ 4 + 20 +
3274 pe_get16 (dll
, pe_header_offset
+ 4 + 16));
3277 /* Get the rva and size of the export section. */
3278 for (i
= 0; i
< nsections
; i
++)
3281 bfd_vma secptr1
= secptr
+ 40 * i
;
3282 bfd_vma vaddr
= pe_get32 (dll
, secptr1
+ 12);
3283 bfd_vma vsize
= pe_get32 (dll
, secptr1
+ 16);
3284 bfd_vma fptr
= pe_get32 (dll
, secptr1
+ 20);
3286 bfd_seek (dll
, (file_ptr
) secptr1
, SEEK_SET
);
3287 bfd_bread (sname
, (bfd_size_type
) 8, dll
);
3289 if (vaddr
<= export_rva
&& vaddr
+ vsize
> export_rva
)
3291 expptr
= fptr
+ (export_rva
- vaddr
);
3292 if (export_rva
+ export_size
> vaddr
+ vsize
)
3293 export_size
= vsize
- (export_rva
- vaddr
);
3298 /* Scan sections and store the base and size of the
3299 data and bss segments in data/base_start/end. */
3300 for (i
= 0; i
< nsections
; i
++)
3302 bfd_vma secptr1
= secptr
+ 40 * i
;
3303 bfd_vma vsize
= pe_get32 (dll
, secptr1
+ 8);
3304 bfd_vma vaddr
= pe_get32 (dll
, secptr1
+ 12);
3305 bfd_vma flags
= pe_get32 (dll
, secptr1
+ 36);
3309 bfd_seek (dll
, (file_ptr
) secptr1
+ 0, SEEK_SET
);
3310 bfd_bread (sec_name
, (bfd_size_type
) 8, dll
);
3312 if (strcmp(sec_name
,".data") == 0)
3315 data_end
= vaddr
+ vsize
;
3317 if (pe_dll_extra_pe_debug
)
3318 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3319 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3320 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3322 else if (strcmp(sec_name
,".rdata") == 0)
3324 rdata_start
= vaddr
;
3325 rdata_end
= vaddr
+ vsize
;
3327 if (pe_dll_extra_pe_debug
)
3328 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3329 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3330 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3332 else if (strcmp (sec_name
,".bss") == 0)
3335 bss_end
= vaddr
+ vsize
;
3337 if (pe_dll_extra_pe_debug
)
3338 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3339 __FUNCTION__
, sec_name
, (unsigned long) vaddr
,
3340 (unsigned long) (vaddr
+ vsize
), (unsigned long) flags
);
3344 expdata
= xmalloc (export_size
);
3345 bfd_seek (dll
, (file_ptr
) expptr
, SEEK_SET
);
3346 bfd_bread (expdata
, (bfd_size_type
) export_size
, dll
);
3347 erva
= (char *) expdata
- export_rva
;
3349 if (pe_def_file
== 0)
3350 pe_def_file
= def_file_empty ();
3352 nexp
= pe_as32 (expdata
+ 24);
3353 name_rvas
= pe_as32 (expdata
+ 32);
3354 exp_funcbase
= pe_as32 (expdata
+ 28);
3356 /* Use internal dll name instead of filename
3357 to enable symbolic dll linking. */
3358 dllname
= erva
+ pe_as32 (expdata
+ 12);
3360 /* Check to see if the dll has already been added to
3361 the definition list and if so return without error.
3362 This avoids multiple symbol definitions. */
3363 if (def_get_module (pe_def_file
, dllname
))
3365 if (pe_dll_extra_pe_debug
)
3366 printf ("%s is already loaded\n", dllname
);
3370 /* Iterate through the list of symbols. */
3371 for (i
= 0; i
< nexp
; i
++)
3373 /* Pointer to the names vector. */
3374 bfd_vma name_rva
= pe_as32 (erva
+ name_rvas
+ i
* 4);
3375 def_file_import
*imp
;
3376 /* Pointer to the function address vector. */
3377 bfd_vma func_rva
= pe_as32 (erva
+ exp_funcbase
+ i
* 4);
3380 /* Skip unwanted symbols, which are
3381 exported in buggy auto-import releases. */
3382 if (! CONST_STRNEQ (erva
+ name_rva
, "__nm_"))
3385 /* is_data is true if the address is in the data, rdata or bss
3388 (func_rva
>= data_start
&& func_rva
< data_end
)
3389 || (func_rva
>= rdata_start
&& func_rva
< rdata_end
)
3390 || (func_rva
>= bss_start
&& func_rva
< bss_end
);
3392 imp
= def_file_add_import (pe_def_file
, erva
+ name_rva
,
3393 dllname
, i
, NULL
, NULL
, &is_dup
);
3394 /* Mark symbol type. */
3396 imp
->data
= is_data
;
3398 if (pe_dll_extra_pe_debug
)
3399 printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
3400 __FUNCTION__
, dllname
, erva
+ name_rva
,
3401 (unsigned long) func_rva
, is_data
? "(data)" : "");
3409 pe_output_file_set_long_section_names (bfd
*abfd
)
3411 if (pe_use_coff_long_section_names
< 0)
3413 if (!bfd_coff_set_long_section_names (abfd
, pe_use_coff_long_section_names
))
3414 einfo (_("%XError: can't use long section names on this arch\n"));
3417 /* These are the main functions, called from the emulation. The first
3418 is called after the bfds are read, so we can guess at how much space
3419 we need. The second is called after everything is placed, so we
3420 can put the right values in place. */
3423 pe_dll_build_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3425 pe_dll_id_target (bfd_get_target (abfd
));
3426 pe_output_file_set_long_section_names (abfd
);
3427 process_def_file_and_drectve (abfd
, info
);
3429 if (pe_def_file
->num_exports
== 0 && !bfd_link_pic (info
))
3432 generate_edata (abfd
, info
);
3433 build_filler_bfd (1);
3434 pe_output_file_set_long_section_names (filler_bfd
);
3438 pe_exe_build_sections (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3440 pe_dll_id_target (bfd_get_target (abfd
));
3441 pe_output_file_set_long_section_names (abfd
);
3442 build_filler_bfd (0);
3443 pe_output_file_set_long_section_names (filler_bfd
);
3447 pe_dll_fill_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3449 pe_dll_id_target (bfd_get_target (abfd
));
3450 pe_output_file_set_long_section_names (abfd
);
3451 image_base
= pe_data (abfd
)->pe_opthdr
.ImageBase
;
3453 generate_reloc (abfd
, info
);
3456 bfd_set_section_size (filler_bfd
, reloc_s
, reloc_sz
);
3458 /* Resize the sections. */
3459 lang_reset_memory_regions ();
3460 lang_size_sections (NULL
, TRUE
);
3462 /* Redo special stuff. */
3463 ldemul_after_allocation ();
3465 /* Do the assignments again. */
3466 lang_do_assignments (lang_final_phase_enum
);
3469 fill_edata (abfd
, info
);
3471 if (bfd_link_dll (info
))
3472 pe_data (abfd
)->dll
= 1;
3474 edata_s
->contents
= edata_d
;
3475 reloc_s
->contents
= reloc_d
;
3479 pe_exe_fill_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3481 pe_dll_id_target (bfd_get_target (abfd
));
3482 pe_output_file_set_long_section_names (abfd
);
3483 image_base
= pe_data (abfd
)->pe_opthdr
.ImageBase
;
3485 generate_reloc (abfd
, info
);
3488 bfd_set_section_size (filler_bfd
, reloc_s
, reloc_sz
);
3490 /* Resize the sections. */
3491 lang_reset_memory_regions ();
3492 lang_size_sections (NULL
, TRUE
);
3494 /* Redo special stuff. */
3495 ldemul_after_allocation ();
3497 /* Do the assignments again. */
3498 lang_do_assignments (lang_final_phase_enum
);
3500 reloc_s
->contents
= reloc_d
;
3504 pe_bfd_is_dll (bfd
*abfd
)
3506 return (bfd_get_format (abfd
) == bfd_object
3508 && pe_data (abfd
)->dll
);