1 /* Routines to help build PEI-format DLLs (Win32 etc)
2 Copyright (C) 1998-2018 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 bfd_boolean runtime_pseudp_reloc_v2_init = FALSE;
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_wince 5
248 /* Don't make it constant as underscore mode gets possibly overriden
249 by target or -(no-)leading-underscore option. */
250 static pe_details_type pe_detail_list[] =
269 autofilter_symbollist_i386
279 autofilter_symbollist_i386
285 16 /* R_SH_IMAGEBASE */,
289 autofilter_symbollist_generic
298 autofilter_symbollist_generic
307 autofilter_symbollist_generic
310 "pei-arm-wince-little",
311 "pe-arm-wince-little",
312 2, /* ARM_RVA32 on Windows CE, see bfd/coff-arm.c. */
316 autofilter_symbollist_generic
318 { NULL, NULL, 0, 0, 0, FALSE, NULL }
321 static const pe_details_type *pe_details;
323 /* Do not specify library suffix explicitly, to allow for dllized versions. */
324 static const autofilter_entry_type autofilter_liblist[] =
326 { STRING_COMMA_LEN ("libcegcc") },
327 { STRING_COMMA_LEN ("libcygwin") },
328 { STRING_COMMA_LEN ("libgcc") },
329 { STRING_COMMA_LEN ("libgcc_s") },
330 { STRING_COMMA_LEN ("libstdc++") },
331 { STRING_COMMA_LEN ("libmingw32") },
332 { STRING_COMMA_LEN ("libmingwex") },
333 { STRING_COMMA_LEN ("libg2c") },
334 { STRING_COMMA_LEN ("libsupc++") },
335 { STRING_COMMA_LEN ("libobjc") },
336 { STRING_COMMA_LEN ("libgcj") },
337 { STRING_COMMA_LEN ("libmsvcrt") },
338 { STRING_COMMA_LEN ("libmsvcrt-os") },
339 { STRING_COMMA_LEN ("libucrtbase") },
343 /* Regardless of the suffix issue mentioned above, we must ensure that
344 we do not falsely match on a leading substring, such as when libtool
345 builds libstdc++ as a DLL using libsupc++convenience.a as an intermediate.
346 This routine ensures that the leading part of the name matches and that
347 it is followed by only an optional version suffix and a file extension,
348 returning zero if so or -1 if not. */
349 static int libnamencmp (const char *libname, const autofilter_entry_type *afptr)
351 if (filename_ncmp (libname, afptr->name, afptr->len))
354 libname += afptr->len;
356 /* Be liberal in interpreting what counts as a version suffix; we
357 accept anything that has a dash to separate it from the name and
358 begins with a digit. */
359 if (libname[0] == '-')
361 if (!ISDIGIT (*++libname))
363 /* Ensure the filename has an extension. */
364 while (*++libname != '.')
368 else if (libname[0] != '.')
374 static const autofilter_entry_type autofilter_objlist[] =
376 { STRING_COMMA_LEN ("crt0.o") },
377 { STRING_COMMA_LEN ("crt1.o") },
378 { STRING_COMMA_LEN ("crt2.o") },
379 { STRING_COMMA_LEN ("dllcrt1.o") },
380 { STRING_COMMA_LEN ("dllcrt2.o") },
381 { STRING_COMMA_LEN ("gcrt0.o") },
382 { STRING_COMMA_LEN ("gcrt1.o") },
383 { STRING_COMMA_LEN ("gcrt2.o") },
384 { STRING_COMMA_LEN ("crtbegin.o") },
385 { STRING_COMMA_LEN ("crtend.o") },
389 static const autofilter_entry_type autofilter_symbolprefixlist[] =
391 /* _imp_ is treated specially, as it is always underscored. */
392 /* { STRING_COMMA_LEN ("_imp_") }, */
393 /* Don't export some c++ symbols. */
394 { STRING_COMMA_LEN ("__rtti_") },
395 { STRING_COMMA_LEN ("__builtin_") },
396 /* Don't re-export auto-imported symbols. */
397 { STRING_COMMA_LEN ("__nm_") },
398 /* Don't export symbols specifying internal DLL layout. */
399 { STRING_COMMA_LEN ("_head_") },
400 { STRING_COMMA_LEN ("_IMPORT_DESCRIPTOR_") },
401 /* Don't export section labels or artificial symbols
403 { STRING_COMMA_LEN (".") },
407 static const autofilter_entry_type autofilter_symbolsuffixlist[] =
409 { STRING_COMMA_LEN ("_iname") },
410 { STRING_COMMA_LEN ("_NULL_THUNK_DATA") },
414 #define U(str) (pe_details->underscored ? "_" str : str)
417 pe_dll_id_target (const char *target)
421 for (i = 0; pe_detail_list[i].target_name; i++)
422 if (strcmp (pe_detail_list[i].target_name, target) == 0
423 || strcmp (pe_detail_list[i].object_target, target) == 0)
425 int u = pe_leading_underscore; /* Underscoring mode. -1 for use default. */
427 bfd_get_target_info (target, NULL, NULL, &u, NULL);
430 pe_detail_list[i].underscored = (u != 0 ? TRUE : FALSE);
431 pe_details = pe_detail_list + i;
432 pe_leading_underscore = (u != 0 ? 1 : 0);
435 einfo (_("%X%P: unsupported PEI architecture: %s\n"), target);
439 /* Helper functions for qsort. Relocs must be sorted so that we can write
440 them out by pages. */
451 reloc_sort (const void *va, const void *vb)
453 bfd_vma a = ((const reloc_data_type *) va)->vma;
454 bfd_vma b = ((const reloc_data_type *) vb)->vma;
456 return (a > b) ? 1 : ((a < b) ? -1 : 0);
460 pe_export_sort (const void *va, const void *vb)
462 const def_file_export *a = va;
463 const def_file_export *b = vb;
471 return strcmp (an, bn);
474 /* Read and process the .DEF file. */
476 /* These correspond to the entries in pe_def_file->exports[]. I use
477 exported_symbol_sections[i] to tag whether or not the symbol was
478 defined, since we can't export symbols we don't have. */
480 static bfd_vma *exported_symbol_offsets;
481 static struct bfd_section **exported_symbol_sections;
482 static int export_table_size;
483 static int count_exported;
484 static int count_exported_byname;
485 static int count_with_ordinals;
486 static const char *dll_name;
487 static int min_ordinal, max_ordinal;
488 static int *exported_symbols;
490 typedef struct exclude_list_struct
493 struct exclude_list_struct *next;
498 static struct exclude_list_struct *excludes = 0;
501 pe_dll_add_excludes (const char *new_excludes, const exclude_type type)
504 char *exclude_string;
506 local_copy = xstrdup (new_excludes);
508 exclude_string = strtok (local_copy, ",:");
509 for (; exclude_string; exclude_string = strtok (NULL, ",:"))
511 struct exclude_list_struct *new_exclude;
513 new_exclude = xmalloc (sizeof (struct exclude_list_struct));
514 new_exclude->string = xmalloc (strlen (exclude_string) + 1);
515 strcpy (new_exclude->string, exclude_string);
516 new_exclude->type = type;
517 new_exclude->next = excludes;
518 excludes = new_exclude;
525 is_import (const char* n)
527 return (CONST_STRNEQ (n, "__imp_"));
530 /* abfd is a bfd containing n (or NULL)
531 It can be used for contextual checks. */
534 auto_export (bfd *abfd, def_file *d, const char *n)
537 struct exclude_list_struct *ex;
538 const autofilter_entry_type *afptr;
539 const char * libname = NULL;
541 if (abfd && abfd->my_archive)
542 libname = lbasename (abfd->my_archive->filename);
544 key.name = key.its_name = (char *) n;
546 /* Return false if n is in the d->exports table. */
547 if (bsearch (&key, d->exports, d->num_exports,
548 sizeof (pe_def_file->exports[0]), pe_export_sort))
551 if (pe_dll_do_default_excludes)
556 if (pe_dll_extra_pe_debug)
557 printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n",
558 n, abfd, abfd->my_archive);
560 /* First of all, make context checks:
561 Don't export anything from standard libs. */
564 afptr = autofilter_liblist;
568 if (libnamencmp (libname, afptr) == 0 )
574 /* Next, exclude symbols from certain startup objects. */
576 if (abfd && (p = lbasename (abfd->filename)))
578 afptr = autofilter_objlist;
581 if (strcmp (p, afptr->name) == 0)
587 /* Don't try to blindly exclude all symbols
588 that begin with '__'; this was tried and
589 it is too restrictive. Instead we have
590 a target specific list to use: */
591 afptr = pe_details->autofilter_symbollist;
595 if (strcmp (n, afptr->name) == 0)
601 /* Next, exclude symbols starting with ... */
602 afptr = autofilter_symbolprefixlist;
605 if (strncmp (n, afptr->name, afptr->len) == 0)
611 /* Finally, exclude symbols ending with ... */
613 afptr = autofilter_symbolsuffixlist;
616 if ((len >= afptr->len)
617 /* Add 1 to insure match with trailing '\0'. */
618 && strncmp (n + len - afptr->len, afptr->name,
619 afptr->len + 1) == 0)
626 for (ex = excludes; ex; ex = ex->next)
628 if (ex->type == EXCLUDELIBS)
631 && ((filename_cmp (libname, ex->string) == 0)
632 || (strcasecmp ("ALL", ex->string) == 0)))
635 else if (ex->type == EXCLUDEFORIMPLIB)
637 if (filename_cmp (abfd->filename, ex->string) == 0)
640 else if (strcmp (n, ex->string) == 0)
648 process_def_file_and_drectve (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
651 struct bfd_link_hash_entry *blhe;
653 struct bfd_section *s;
654 def_file_export *e = 0;
655 bfd_boolean resort_needed;
658 pe_def_file = def_file_empty ();
660 /* First, run around to all the objects looking for the .drectve
661 sections, and push those into the def file too. */
662 for (b = info->input_bfds; b; b = b->link.next)
664 s = bfd_get_section_by_name (b, ".drectve");
668 char *buf = xmalloc (size);
670 bfd_get_section_contents (b, s, buf, 0, size);
671 def_file_add_directive (pe_def_file, buf, size);
676 /* Process aligned common symbol information from the
677 .drectve sections now; common symbol allocation is
678 done before final link, so it will be too late to
679 process them in process_embedded_commands() called
680 from _bfd_coff_link_input_bfd(). */
681 if (pe_def_file->aligncomms)
683 def_file_aligncomm *ac = pe_def_file->aligncomms;
686 struct coff_link_hash_entry *sym_hash;
687 sym_hash = coff_link_hash_lookup (coff_hash_table (info),
688 ac->symbol_name, FALSE, FALSE, FALSE);
689 if (sym_hash && sym_hash->root.type == bfd_link_hash_common
690 && sym_hash->root.u.c.p->alignment_power < (unsigned) ac->alignment)
692 sym_hash->root.u.c.p->alignment_power = (unsigned) ac->alignment;
698 /* If we are building an executable and there is nothing
699 to export, we do not build an export table at all. */
700 if (bfd_link_executable (info) && pe_def_file->num_exports == 0
701 && (!pe_dll_export_everything || pe_dll_exclude_all_symbols))
704 /* Now, maybe export everything else the default way. */
705 if ((pe_dll_export_everything || pe_def_file->num_exports == 0)
706 && !pe_dll_exclude_all_symbols)
708 for (b = info->input_bfds; b; b = b->link.next)
713 if (!bfd_generic_link_read_symbols (b))
715 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b);
719 symbols = bfd_get_outsymbols (b);
720 nsyms = bfd_get_symcount (b);
722 for (j = 0; j < nsyms; j++)
724 /* We should export symbols which are either global or not
725 anything at all. (.bss data is the latter)
726 We should not export undefined symbols. */
727 bfd_boolean would_export
728 = (symbols[j]->section != bfd_und_section_ptr
729 && ((symbols[j]->flags & BSF_GLOBAL)
730 || (symbols[j]->flags == 0)));
731 if (link_info.version_info && would_export)
733 = !bfd_hide_sym_by_version (link_info.version_info,
737 const char *sn = symbols[j]->name;
739 /* We should not re-export imported stuff. */
745 name = xmalloc (strlen ("__imp_") + strlen (sn) + 1);
746 sprintf (name, "%s%s", "__imp_", sn);
748 blhe = bfd_link_hash_lookup (info->hash, name,
749 FALSE, FALSE, FALSE);
752 if (blhe && blhe->type == bfd_link_hash_defined)
756 if (pe_details->underscored && *sn == '_')
759 if (auto_export (b, pe_def_file, sn))
764 p = def_file_add_export (pe_def_file, sn, 0, -1,
766 /* Fill data flag properly, from dlltool.c. */
768 p->flag_data = !(symbols[j]->flags & BSF_FUNCTION);
776 #define NE pe_def_file->num_exports
778 /* Don't create an empty export table. */
782 resort_needed = FALSE;
784 /* Canonicalize the export list. */
787 for (i = 0; i < NE; i++)
789 /* Check for fastcall/stdcall-decoration, but ignore
790 C++ mangled names. */
791 if (pe_def_file->exports[i].name[0] != '?'
792 && strchr (pe_def_file->exports[i].name, '@'))
794 /* This will preserve internal_name, which may have been
795 pointing to the same memory as name, or might not
797 int lead_at = (*pe_def_file->exports[i].name == '@');
798 char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
799 char *tmp_at = strrchr (tmp, '@');
804 einfo (_("%X%P: cannot export %s: invalid export name\n"),
805 pe_def_file->exports[i].name);
806 pe_def_file->exports[i].name = tmp;
807 resort_needed = TRUE;
812 /* Re-sort the exports table as we have possibly changed the order
813 by removing leading @. */
815 qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]),
818 if (pe_dll_stdcall_aliases)
820 for (i = 0; i < NE; i++)
822 if (is_import (pe_def_file->exports[i].name))
825 if (strchr (pe_def_file->exports[i].name, '@'))
828 int lead_at = (*pe_def_file->exports[i].name == '@');
829 char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
831 *(strchr (tmp, '@')) = 0;
832 if (auto_export (NULL, pe_def_file, tmp))
833 def_file_add_export (pe_def_file, tmp,
834 pe_def_file->exports[i].internal_name,
842 /* Convenience, but watch out for it changing. */
843 e = pe_def_file->exports;
845 for (i = 0, j = 0; i < NE; i++)
847 if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
849 /* This is a duplicate. */
850 if (e[j - 1].ordinal != -1
851 && e[i].ordinal != -1
852 && e[j - 1].ordinal != e[i].ordinal)
854 if (pe_dll_warn_dup_exports)
855 /* xgettext:c-format */
856 einfo (_("%X%P: error, duplicate EXPORT with ordinals: %s (%d vs %d)\n"),
857 e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
861 if (pe_dll_warn_dup_exports)
862 /* xgettext:c-format */
863 einfo (_("%P: warning, duplicate EXPORT: %s\n"),
867 if (e[i].ordinal != -1)
868 e[j - 1].ordinal = e[i].ordinal;
869 e[j - 1].flag_private |= e[i].flag_private;
870 e[j - 1].flag_constant |= e[i].flag_constant;
871 e[j - 1].flag_noname |= e[i].flag_noname;
872 e[j - 1].flag_data |= e[i].flag_data;
875 if (e[i].internal_name)
876 free (e[i].internal_name);
878 free (e[i].its_name);
887 pe_def_file->num_exports = j; /* == NE */
889 exported_symbol_offsets = xmalloc (NE * sizeof (bfd_vma));
890 exported_symbol_sections = xmalloc (NE * sizeof (struct bfd_section *));
892 memset (exported_symbol_sections, 0, NE * sizeof (struct bfd_section *));
896 count_exported_byname = 0;
897 count_with_ordinals = 0;
899 for (i = 0; i < NE; i++)
901 char *int_name = pe_def_file->exports[i].internal_name;
904 /* PR 19803: Make sure that any exported symbol does not get garbage collected. */
905 lang_add_gc_name (int_name);
907 name = xmalloc (strlen (int_name) + 2);
908 if (pe_details->underscored && int_name[0] != '@')
911 strcpy (name + 1, int_name);
913 /* PR 19803: The alias must be preserved as well. */
914 lang_add_gc_name (xstrdup (name));
917 strcpy (name, int_name);
919 blhe = bfd_link_hash_lookup (info->hash,
924 && (blhe->type == bfd_link_hash_defined
925 || (blhe->type == bfd_link_hash_common)))
928 if (!pe_def_file->exports[i].flag_noname)
929 count_exported_byname++;
931 /* Only fill in the sections. The actual offsets are computed
932 in fill_exported_offsets() after common symbols are laid
934 if (blhe->type == bfd_link_hash_defined)
935 exported_symbol_sections[i] = blhe->u.def.section;
937 exported_symbol_sections[i] = blhe->u.c.p->section;
939 if (pe_def_file->exports[i].ordinal != -1)
941 if (max_ordinal < pe_def_file->exports[i].ordinal)
942 max_ordinal = pe_def_file->exports[i].ordinal;
943 if (min_ordinal > pe_def_file->exports[i].ordinal)
944 min_ordinal = pe_def_file->exports[i].ordinal;
945 count_with_ordinals++;
948 /* Check for forward exports. These are indicated in DEF files by an
949 export directive of the form NAME1 = MODULE-NAME.EXTERNAL-NAME
950 but we must take care not to be fooled when the user wants to export
951 a symbol that actually really has a dot in it, so we only check
952 for them here, after real defined symbols have already been matched. */
953 else if (strchr (int_name, '.'))
956 if (!pe_def_file->exports[i].flag_noname)
957 count_exported_byname++;
959 pe_def_file->exports[i].flag_forward = 1;
961 if (pe_def_file->exports[i].ordinal != -1)
963 if (max_ordinal < pe_def_file->exports[i].ordinal)
964 max_ordinal = pe_def_file->exports[i].ordinal;
965 if (min_ordinal > pe_def_file->exports[i].ordinal)
966 min_ordinal = pe_def_file->exports[i].ordinal;
967 count_with_ordinals++;
970 else if (blhe && blhe->type == bfd_link_hash_undefined)
972 /* xgettext:c-format */
973 einfo (_("%X%P: cannot export %s: symbol not defined\n"),
978 /* xgettext:c-format */
979 einfo (_("%X%P: cannot export %s: symbol wrong type (%d vs %d)\n"),
981 blhe->type, bfd_link_hash_defined);
985 /* xgettext:c-format */
986 einfo (_("%X%P: cannot export %s: symbol not found\n"),
993 /* Build the bfd that will contain .edata and .reloc sections. */
996 build_filler_bfd (int include_edata)
998 lang_input_statement_type *filler_file;
999 filler_file = lang_add_input_file ("dll stuff",
1000 lang_input_file_is_fake_enum,
1002 filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff",
1003 link_info.output_bfd);
1004 if (filler_bfd == NULL
1005 || !bfd_set_arch_mach (filler_bfd,
1006 bfd_get_arch (link_info.output_bfd),
1007 bfd_get_mach (link_info.output_bfd)))
1009 einfo (_("%F%P: can not create BFD: %E\n"));
1015 edata_s = bfd_make_section_old_way (filler_bfd, ".edata");
1017 || !bfd_set_section_flags (filler_bfd, edata_s,
1024 einfo (_("%X%P: can not create .edata section: %E\n"));
1027 bfd_set_section_size (filler_bfd, edata_s, edata_sz);
1030 reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc");
1032 || !bfd_set_section_flags (filler_bfd, reloc_s,
1039 einfo (_("%X%P: can not create .reloc section: %E\n"));
1043 bfd_set_section_size (filler_bfd, reloc_s, 0);
1045 ldlang_add_file (filler_file);
1048 /* Gather all the exported symbols and build the .edata section. */
1051 generate_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
1053 int i, next_ordinal;
1054 int name_table_size = 0;
1057 /* First, we need to know how many exported symbols there are,
1058 and what the range of ordinals is. */
1059 if (pe_def_file->name)
1060 dll_name = pe_def_file->name;
1063 dll_name = abfd->filename;
1065 for (dlnp = dll_name; *dlnp; dlnp++)
1066 if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':')
1067 dll_name = dlnp + 1;
1070 if (count_with_ordinals && max_ordinal > count_exported)
1072 if (min_ordinal > max_ordinal - count_exported + 1)
1073 min_ordinal = max_ordinal - count_exported + 1;
1078 max_ordinal = count_exported;
1081 export_table_size = max_ordinal - min_ordinal + 1;
1082 exported_symbols = xmalloc (export_table_size * sizeof (int));
1083 for (i = 0; i < export_table_size; i++)
1084 exported_symbols[i] = -1;
1086 /* Now we need to assign ordinals to those that don't have them. */
1087 for (i = 0; i < NE; i++)
1089 if (exported_symbol_sections[i]
1090 || pe_def_file->exports[i].flag_forward)
1092 if (pe_def_file->exports[i].ordinal != -1)
1094 int ei = pe_def_file->exports[i].ordinal - min_ordinal;
1095 int pi = exported_symbols[ei];
1099 /* xgettext:c-format */
1100 einfo (_("%X%P: error: ordinal used twice: %d (%s vs %s)\n"),
1101 pe_def_file->exports[i].ordinal,
1102 pe_def_file->exports[i].name,
1103 pe_def_file->exports[pi].name);
1105 exported_symbols[ei] = i;
1107 if (pe_def_file->exports[i].its_name)
1108 name_table_size += strlen (pe_def_file->exports[i].its_name) + 1;
1110 name_table_size += strlen (pe_def_file->exports[i].name) + 1;
1113 /* Reserve space for the forward name. */
1114 if (pe_def_file->exports[i].flag_forward)
1116 name_table_size += strlen (pe_def_file->exports[i].internal_name) + 1;
1120 next_ordinal = min_ordinal;
1121 for (i = 0; i < NE; i++)
1122 if ((exported_symbol_sections[i]
1123 || pe_def_file->exports[i].flag_forward)
1124 && pe_def_file->exports[i].ordinal == -1)
1126 while (exported_symbols[next_ordinal - min_ordinal] != -1)
1129 exported_symbols[next_ordinal - min_ordinal] = i;
1130 pe_def_file->exports[i].ordinal = next_ordinal;
1133 /* PR 12969: Check for more than 1^16 ordinals. */
1134 if (max_ordinal > 65535 || next_ordinal > 65535)
1135 /* xgettext:c-format */
1136 einfo(_("%X%P: error: export ordinal too large: %d\n"),
1137 max_ordinal > next_ordinal ? max_ordinal : next_ordinal);
1139 /* OK, now we can allocate some memory. */
1140 edata_sz = (40 /* directory */
1141 + 4 * export_table_size /* addresses */
1142 + 4 * count_exported_byname /* name ptrs */
1143 + 2 * count_exported_byname /* ordinals */
1144 + name_table_size + strlen (dll_name) + 1);
1147 /* Fill the exported symbol offsets. The preliminary work has already
1148 been done in process_def_file_and_drectve(). */
1151 fill_exported_offsets (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
1154 struct bfd_link_hash_entry *blhe;
1156 for (i = 0; i < pe_def_file->num_exports; i++)
1160 name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
1161 if (pe_details->underscored
1162 && *pe_def_file->exports[i].internal_name != '@')
1165 strcpy (name + 1, pe_def_file->exports[i].internal_name);
1168 strcpy (name, pe_def_file->exports[i].internal_name);
1170 blhe = bfd_link_hash_lookup (info->hash,
1172 FALSE, FALSE, TRUE);
1174 if (blhe && blhe->type == bfd_link_hash_defined)
1175 exported_symbol_offsets[i] = blhe->u.def.value;
1182 fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
1185 unsigned char *edirectory;
1186 unsigned char *eaddresses;
1187 unsigned char *enameptrs;
1188 unsigned char *eordinals;
1191 edata_d = xmalloc (edata_sz);
1193 /* Note use of array pointer math here. */
1194 edirectory = edata_d;
1195 eaddresses = edirectory + 40;
1196 enameptrs = eaddresses + 4 * export_table_size;
1197 eordinals = enameptrs + 4 * count_exported_byname;
1198 enamestr = (char *) eordinals + 2 * count_exported_byname;
1200 #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \
1201 + edata_s->output_section->vma - image_base)
1203 memset (edata_d, 0, edata_sz);
1205 if (pe_data (abfd)->insert_timestamp)
1206 H_PUT_32 (abfd, time (0), edata_d + 4);
1208 if (pe_def_file->version_major != -1)
1210 bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8);
1211 bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10);
1214 bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12);
1215 strcpy (enamestr, dll_name);
1216 enamestr += strlen (enamestr) + 1;
1217 bfd_put_32 (abfd, min_ordinal, edata_d + 16);
1218 bfd_put_32 (abfd, export_table_size, edata_d + 20);
1219 bfd_put_32 (abfd, count_exported_byname, edata_d + 24);
1220 bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28);
1221 bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32);
1222 bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36);
1224 fill_exported_offsets (abfd, info);
1226 /* Ok, now for the filling in part.
1227 Scan alphabetically - ie the ordering in the exports[] table,
1228 rather than by ordinal - the ordering in the exported_symbol[]
1229 table. See dlltool.c and:
1230 http://sources.redhat.com/ml/binutils/2003-04/msg00379.html
1231 for more information. */
1233 for (s = 0; s < NE; s++)
1235 struct bfd_section *ssec = exported_symbol_sections[s];
1236 if (pe_def_file->exports[s].ordinal != -1
1237 && (pe_def_file->exports[s].flag_forward || ssec != NULL))
1239 int ord = pe_def_file->exports[s].ordinal;
1241 if (pe_def_file->exports[s].flag_forward)
1243 bfd_put_32 (abfd, ERVA (enamestr),
1244 eaddresses + 4 * (ord - min_ordinal));
1246 strcpy (enamestr, pe_def_file->exports[s].internal_name);
1247 enamestr += strlen (pe_def_file->exports[s].internal_name) + 1;
1251 bfd_vma srva = (exported_symbol_offsets[s]
1252 + ssec->output_section->vma
1253 + ssec->output_offset);
1255 bfd_put_32 (abfd, srva - image_base,
1256 eaddresses + 4 * (ord - min_ordinal));
1259 if (!pe_def_file->exports[s].flag_noname)
1261 char *ename = pe_def_file->exports[s].name;
1262 if (pe_def_file->exports[s].its_name)
1263 ename = pe_def_file->exports[s].its_name;
1265 bfd_put_32 (abfd, ERVA (enamestr), enameptrs);
1267 strcpy (enamestr, ename);
1268 enamestr += strlen (enamestr) + 1;
1269 bfd_put_16 (abfd, ord - min_ordinal, eordinals);
1271 pe_def_file->exports[s].hint = hint++;
1278 static struct bfd_section *current_sec;
1281 pe_walk_relocs (struct bfd_link_info *info,
1283 const char *symname,
1284 struct bfd_hash_table *import_hash,
1285 void (*cb) (arelent *, asection *, char *, const char *))
1290 for (b = info->input_bfds; b; b = b->link.next)
1294 if (!bfd_generic_link_read_symbols (b))
1296 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b);
1300 symbols = bfd_get_outsymbols (b);
1302 for (s = b->sections; s; s = s->next)
1305 int relsize, nrelocs, i;
1306 int flags = bfd_get_section_flags (b, s);
1308 /* Skip discarded linkonce sections. */
1309 if (flags & SEC_LINK_ONCE
1310 && s->output_section == bfd_abs_section_ptr)
1315 relsize = bfd_get_reloc_upper_bound (b, s);
1316 relocs = xmalloc (relsize);
1317 nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
1319 for (i = 0; i < nrelocs; i++)
1321 struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
1323 /* Warning: the callback needs to be passed NAME directly. */
1326 if (bfd_hash_lookup (import_hash, sym->name, FALSE, FALSE))
1328 strcpy (name, sym->name);
1329 cb (relocs[i], s, name, symname);
1334 if (strcmp (name, sym->name) == 0)
1335 cb (relocs[i], s, name, symname);
1341 /* Warning: the allocated symbols are remembered in BFD and reused
1342 later, so don't free them! */
1343 /* free (symbols); */
1349 pe_find_data_imports (const char *symhead,
1350 void (*cb) (arelent *, asection *, char *, const char *))
1352 struct bfd_link_hash_entry *undef;
1353 const size_t headlen = strlen (symhead);
1356 struct bfd_hash_table *import_hash;
1358 for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1359 if (undef->type == bfd_link_hash_undefined)
1361 size_t len = strlen (undef->root.string);
1368 /* For the pseudo-relocation support version 2, we can collect the symbols
1369 that are subject to auto-import and adjust the relocations en masse. */
1370 if (link_info.pei386_runtime_pseudo_reloc == 2)
1373 = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table));
1374 if (!bfd_hash_table_init (import_hash,
1376 sizeof (struct bfd_hash_entry)))
1377 einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
1382 /* We are being a bit cunning here. The buffer will have space for
1383 prefixes at the beginning. The prefix is modified here and in a
1384 number of functions called from this function. */
1385 #define PREFIX_LEN 32
1386 buf = xmalloc (PREFIX_LEN + namelen + 1);
1387 name = buf + PREFIX_LEN;
1389 for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1390 if (undef->type == bfd_link_hash_undefined)
1392 struct bfd_link_hash_entry *sym;
1395 if (pe_dll_extra_pe_debug)
1396 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1398 strcpy (name, undef->root.string);
1399 impname = name - (sizeof "__imp_" - 1);
1400 memcpy (impname, "__imp_", sizeof "__imp_" - 1);
1402 sym = bfd_link_hash_lookup (link_info.hash, impname, 0, 0, 1);
1404 if (sym && sym->type == bfd_link_hash_defined)
1407 bfd_hash_lookup (import_hash, undef->root.string, TRUE, FALSE);
1410 bfd *b = sym->u.def.section->owner;
1411 const char *symname = NULL;
1415 if (!bfd_generic_link_read_symbols (b))
1417 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b);
1421 symbols = bfd_get_outsymbols (b);
1422 nsyms = bfd_get_symcount (b);
1424 for (i = 0; i < nsyms; i++)
1425 if (strncmp (symbols[i]->name, symhead, headlen) == 0)
1427 if (pe_dll_extra_pe_debug)
1428 printf ("->%s\n", symbols[i]->name);
1430 symname = symbols[i]->name + headlen;
1434 /* If the symobl isn't part of an import table, there is no
1435 point in building a fixup, this would give rise to link
1436 errors for mangled symbols instead of the original one. */
1438 pe_walk_relocs (&link_info, name, symname, NULL, cb);
1443 /* Let's differentiate it somehow from defined. */
1444 undef->type = bfd_link_hash_defweak;
1445 undef->u.def.value = sym->u.def.value;
1446 undef->u.def.section = sym->u.def.section;
1448 if (link_info.pei386_auto_import == -1)
1450 static bfd_boolean warned = FALSE;
1452 info_msg (_("Info: resolving %s by linking to %s "
1453 "(auto-import)\n"), name, impname);
1455 /* PR linker/4844. */
1458 einfo (_("%P: warning: auto-importing has been activated "
1459 "without --enable-auto-import specified on the "
1460 "command line; this should work unless it "
1461 "involves constant data structures referencing "
1462 "symbols from auto-imported DLLs\n"));
1469 /* If we have the import hash table, walk the relocations only once. */
1472 pe_walk_relocs (&link_info, name, NULL, import_hash, cb);
1473 bfd_hash_table_free (import_hash);
1480 /* Gather all the relocations and build the .reloc section. */
1483 generate_reloc (bfd *abfd, struct bfd_link_info *info)
1486 /* For .reloc stuff. */
1487 reloc_data_type *reloc_data;
1488 int total_relocs = 0;
1490 bfd_vma sec_page = (bfd_vma) -1;
1491 bfd_vma page_ptr, page_count;
1494 struct bfd_section *s;
1497 for (b = info->input_bfds; b; b = b->link.next)
1498 for (s = b->sections; s; s = s->next)
1499 total_relocs += s->reloc_count;
1501 reloc_data = xmalloc (total_relocs * sizeof (reloc_data_type));
1505 for (bi = 0, b = info->input_bfds; b; bi++, b = b->link.next)
1508 int relsize, nrelocs;
1510 for (s = b->sections; s; s = s->next)
1512 bfd_vma sec_vma = s->output_section->vma + s->output_offset;
1515 /* If it's not loaded, we don't need to relocate it this way. */
1516 if (!(s->output_section->flags & SEC_LOAD))
1519 /* I don't know why there would be a reloc for these, but I've
1520 seen it happen - DJ */
1521 if (s->output_section == bfd_abs_section_ptr)
1524 if (s->output_section->vma == 0)
1526 /* Huh? Shouldn't happen, but punt if it does. */
1527 einfo (_("%P: zero vma section reloc detected: `%s' #%d f=%d\n"),
1528 s->output_section->name, s->output_section->index,
1529 s->output_section->flags);
1533 if (!bfd_generic_link_read_symbols (b))
1535 einfo (_("%F%P: %pB: could not read symbols: %E\n"), b);
1539 symbols = bfd_get_outsymbols (b);
1540 relsize = bfd_get_reloc_upper_bound (b, s);
1541 relocs = xmalloc (relsize);
1542 nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
1544 for (i = 0; i < nrelocs; i++)
1546 if (pe_dll_extra_pe_debug)
1548 struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
1549 printf ("rel: %s\n", sym->name);
1551 if (!relocs[i]->howto->pc_relative
1552 && relocs[i]->howto->type != pe_details->imagebase_reloc)
1554 struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
1556 /* Don't create relocs for undefined weak symbols. */
1557 if (sym->flags == BSF_WEAK)
1559 struct bfd_link_hash_entry *blhe
1560 = bfd_wrapped_link_hash_lookup (abfd, info, sym->name,
1561 FALSE, FALSE, FALSE);
1562 if (blhe && blhe->type == bfd_link_hash_undefweak)
1564 /* Check aux sym and see if it is defined or not. */
1565 struct coff_link_hash_entry *h, *h2;
1566 h = (struct coff_link_hash_entry *)blhe;
1567 if (h->symbol_class != C_NT_WEAK || h->numaux != 1)
1569 h2 = h->auxbfd->tdata.coff_obj_data->sym_hashes
1570 [h->aux->x_sym.x_tagndx.l];
1571 /* We don't want a base reloc if the aux sym is not
1572 found, undefined, or if it is the constant ABS
1573 zero default value. (We broaden that slightly by
1574 not testing the value, just the section; there's
1575 no reason we'd want a reference to any absolute
1576 address to get relocated during rebasing). */
1577 if (!h2 || h2->root.type == bfd_link_hash_undefined
1578 || h2->root.u.def.section == bfd_abs_section_ptr)
1581 else if (!blhe || blhe->type != bfd_link_hash_defined)
1584 /* Nor for Dwarf FDE references to discarded sections. */
1585 else if (bfd_is_abs_section (sym->section->output_section))
1587 /* We only ignore relocs from .eh_frame sections, as
1588 they are discarded by the final link rather than
1589 resolved against the kept section. */
1590 if (!strcmp (s->name, ".eh_frame"))
1594 reloc_data[total_relocs].vma = sec_vma + relocs[i]->address;
1596 #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift)
1598 switch BITS_AND_SHIFT (relocs[i]->howto->bitsize,
1599 relocs[i]->howto->rightshift)
1601 #ifdef pe_use_x86_64
1602 case BITS_AND_SHIFT (64, 0):
1603 reloc_data[total_relocs].type = 10;
1607 case BITS_AND_SHIFT (32, 0):
1608 reloc_data[total_relocs].type = 3;
1611 case BITS_AND_SHIFT (16, 0):
1612 reloc_data[total_relocs].type = 2;
1615 case BITS_AND_SHIFT (16, 16):
1616 reloc_data[total_relocs].type = 4;
1617 /* FIXME: we can't know the symbol's right value
1618 yet, but we probably can safely assume that
1619 CE will relocate us in 64k blocks, so leaving
1621 reloc_data[total_relocs].extra = 0;
1624 case BITS_AND_SHIFT (26, 2):
1625 reloc_data[total_relocs].type = 5;
1628 case BITS_AND_SHIFT (24, 2):
1629 /* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c
1630 Those ARM_xxx definitions should go in proper
1632 if (relocs[i]->howto->type == 0
1633 /* Older GNU linkers used 5 instead of 0 for this reloc. */
1634 || relocs[i]->howto->type == 5)
1635 /* This is an ARM_26D reloc, which is an ARM_26 reloc
1636 that has already been fully processed during a
1637 previous link stage, so ignore it here. */
1641 /* xgettext:c-format */
1642 einfo (_("%X%P: error: %d-bit reloc in dll\n"),
1643 relocs[i]->howto->bitsize);
1649 /* Warning: the allocated symbols are remembered in BFD and
1650 reused later, so don't free them! */
1654 /* At this point, we have total_relocs relocation addresses in
1655 reloc_addresses, which are all suitable for the .reloc section.
1656 We must now create the new sections. */
1657 qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort);
1659 for (i = 0; i < total_relocs; i++)
1661 bfd_vma this_page = (reloc_data[i].vma >> 12);
1663 if (this_page != sec_page)
1665 reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */
1667 sec_page = this_page;
1672 if (reloc_data[i].type == 4)
1676 reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */
1677 reloc_d = xmalloc (reloc_sz);
1678 sec_page = (bfd_vma) -1;
1680 page_ptr = (bfd_vma) -1;
1683 for (i = 0; i < total_relocs; i++)
1685 bfd_vma rva = reloc_data[i].vma - image_base;
1686 bfd_vma this_page = (rva & ~0xfff);
1688 if (this_page != sec_page)
1690 while (reloc_sz & 3)
1691 reloc_d[reloc_sz++] = 0;
1693 if (page_ptr != (bfd_vma) -1)
1694 bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
1696 bfd_put_32 (abfd, this_page, reloc_d + reloc_sz);
1697 page_ptr = reloc_sz;
1699 sec_page = this_page;
1703 bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type << 12),
1704 reloc_d + reloc_sz);
1707 if (reloc_data[i].type == 4)
1709 bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz);
1716 while (reloc_sz & 3)
1717 reloc_d[reloc_sz++] = 0;
1719 if (page_ptr != (bfd_vma) -1)
1720 bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
1722 while (reloc_sz < reloc_s->size)
1723 reloc_d[reloc_sz++] = 0;
1726 /* Given the exiting def_file structure, print out a .DEF file that
1727 corresponds to it. */
1730 quoteput (char *s, FILE *f, int needs_quotes)
1734 for (cp = s; *cp; cp++)
1749 if (*s == '"' || *s == '\\')
1763 pe_dll_generate_def_file (const char *pe_out_def_filename)
1766 FILE *out = fopen (pe_out_def_filename, "w");
1769 /* xgettext:c-format */
1770 einfo (_("%P: can't open output def file %s\n"),
1771 pe_out_def_filename);
1775 if (pe_def_file->name)
1777 if (pe_def_file->is_dll)
1778 fprintf (out, "LIBRARY ");
1780 fprintf (out, "NAME ");
1782 quoteput (pe_def_file->name, out, 1);
1784 if (pe_data (link_info.output_bfd)->pe_opthdr.ImageBase)
1786 fprintf (out, " BASE=0x");
1787 fprintf_vma (out, ((bfd_vma) pe_data (link_info.output_bfd)->pe_opthdr.ImageBase));
1789 fprintf (out, "\n");
1792 if (pe_def_file->description)
1794 fprintf (out, "DESCRIPTION ");
1795 quoteput (pe_def_file->description, out, 1);
1796 fprintf (out, "\n");
1799 if (pe_def_file->version_minor != -1)
1800 fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major,
1801 pe_def_file->version_minor);
1802 else if (pe_def_file->version_major != -1)
1803 fprintf (out, "VERSION %d\n", pe_def_file->version_major);
1805 if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1)
1806 fprintf (out, "\n");
1808 if (pe_def_file->stack_commit != -1)
1809 fprintf (out, "STACKSIZE 0x%x,0x%x\n",
1810 pe_def_file->stack_reserve, pe_def_file->stack_commit);
1811 else if (pe_def_file->stack_reserve != -1)
1812 fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve);
1814 if (pe_def_file->heap_commit != -1)
1815 fprintf (out, "HEAPSIZE 0x%x,0x%x\n",
1816 pe_def_file->heap_reserve, pe_def_file->heap_commit);
1817 else if (pe_def_file->heap_reserve != -1)
1818 fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve);
1820 if (pe_def_file->num_section_defs > 0)
1822 fprintf (out, "\nSECTIONS\n\n");
1824 for (i = 0; i < pe_def_file->num_section_defs; i++)
1827 quoteput (pe_def_file->section_defs[i].name, out, 0);
1829 if (pe_def_file->section_defs[i].class)
1831 fprintf (out, " CLASS ");
1832 quoteput (pe_def_file->section_defs[i].class, out, 0);
1835 if (pe_def_file->section_defs[i].flag_read)
1836 fprintf (out, " READ");
1838 if (pe_def_file->section_defs[i].flag_write)
1839 fprintf (out, " WRITE");
1841 if (pe_def_file->section_defs[i].flag_execute)
1842 fprintf (out, " EXECUTE");
1844 if (pe_def_file->section_defs[i].flag_shared)
1845 fprintf (out, " SHARED");
1847 fprintf (out, "\n");
1851 if (pe_def_file->num_exports > 0)
1853 fprintf (out, "EXPORTS\n");
1855 for (i = 0; i < pe_def_file->num_exports; i++)
1857 def_file_export *e = pe_def_file->exports + i;
1859 quoteput (e->name, out, 0);
1861 if (e->internal_name && strcmp (e->internal_name, e->name))
1863 fprintf (out, " = ");
1864 quoteput (e->internal_name, out, 0);
1867 if (e->ordinal != -1)
1868 fprintf (out, " @%d", e->ordinal);
1870 if (e->flag_private)
1871 fprintf (out, " PRIVATE");
1873 if (e->flag_constant)
1874 fprintf (out, " CONSTANT");
1877 fprintf (out, " NONAME");
1880 fprintf (out, " DATA");
1882 fprintf (out, "\n");
1886 if (pe_def_file->num_imports > 0)
1888 fprintf (out, "\nIMPORTS\n\n");
1890 for (i = 0; i < pe_def_file->num_imports; i++)
1892 def_file_import *im = pe_def_file->imports + i;
1895 if (im->internal_name
1896 && (!im->name || strcmp (im->internal_name, im->name)))
1898 quoteput (im->internal_name, out, 0);
1899 fprintf (out, " = ");
1902 quoteput (im->module->name, out, 0);
1906 quoteput (im->name, out, 0);
1908 fprintf (out, "%d", im->ordinal);
1912 fprintf (out, " == ");
1913 quoteput (im->its_name, out, 0);
1916 fprintf (out, "\n");
1921 fprintf (out, _("; no contents available\n"));
1923 if (fclose (out) == EOF)
1924 /* xgettext:c-format */
1925 einfo (_("%P: error closing file `%s'\n"), pe_out_def_filename);
1928 /* Generate the import library. */
1930 static asymbol **symtab;
1933 static const char *dll_filename;
1934 static char *dll_symname;
1936 #define UNDSEC bfd_und_section_ptr
1939 quick_section (bfd *abfd, const char *name, int flags, int align)
1944 sec = bfd_make_section_old_way (abfd, name);
1945 bfd_set_section_flags (abfd, sec, flags | SEC_ALLOC | SEC_LOAD | SEC_KEEP);
1946 bfd_set_section_alignment (abfd, sec, align);
1947 /* Remember to undo this before trying to link internally! */
1948 sec->output_section = sec;
1950 sym = bfd_make_empty_symbol (abfd);
1951 symtab[symptr++] = sym;
1952 sym->name = sec->name;
1954 sym->flags = BSF_LOCAL;
1961 quick_symbol (bfd *abfd,
1970 char *name = xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1);
1975 sym = bfd_make_empty_symbol (abfd);
1980 symtab[symptr++] = sym;
1983 static arelent *reltab = 0;
1984 static int relcount = 0, relsize = 0;
1987 quick_reloc (bfd *abfd, bfd_size_type address, int which_howto, int symidx)
1989 if (relcount >= relsize - 1)
1993 reltab = xrealloc (reltab, relsize * sizeof (arelent));
1995 reltab = xmalloc (relsize * sizeof (arelent));
1997 reltab[relcount].address = address;
1998 reltab[relcount].addend = 0;
1999 reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto);
2000 reltab[relcount].sym_ptr_ptr = symtab + symidx;
2005 save_relocs (asection *sec)
2009 sec->relocation = reltab;
2010 sec->reloc_count = relcount;
2011 sec->orelocation = xmalloc ((relcount + 1) * sizeof (arelent *));
2012 for (i = 0; i < relcount; i++)
2013 sec->orelocation[i] = sec->relocation + i;
2014 sec->orelocation[relcount] = 0;
2015 sec->flags |= SEC_RELOC;
2017 relcount = relsize = 0;
2020 /* .section .idata$2
2021 .global __head_my_dll
2038 make_head (bfd *parent)
2040 asection *id2, *id5, *id4;
2041 unsigned char *d2, *d5, *d4;
2045 oname = xmalloc (20);
2046 sprintf (oname, "d%06d.o", tmp_seq);
2049 abfd = bfd_create (oname, parent);
2050 bfd_find_target (pe_details->object_target, abfd);
2051 bfd_make_writable (abfd);
2053 bfd_set_format (abfd, bfd_object);
2054 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2057 symtab = xmalloc (6 * sizeof (asymbol *));
2058 id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2);
2059 id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
2060 id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
2061 quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0);
2062 quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
2064 /* OK, pay attention here. I got confused myself looking back at
2065 it. We create a four-byte section to mark the beginning of the
2066 list, and we include an offset of 4 in the section, so that the
2067 pointer to the list points to the *end* of this section, which is
2068 the start of the list of sections from other objects. */
2070 bfd_set_section_size (abfd, id2, 20);
2074 if (pe_use_nul_prefixed_import_tables)
2075 d2[0] = d2[16] = PE_IDATA5_SIZE; /* Reloc addend. */
2076 quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
2077 quick_reloc (abfd, 12, BFD_RELOC_RVA, 4);
2078 quick_reloc (abfd, 16, BFD_RELOC_RVA, 1);
2081 if (pe_use_nul_prefixed_import_tables)
2082 bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
2084 bfd_set_section_size (abfd, id5, 0);
2085 d5 = xmalloc (PE_IDATA5_SIZE);
2087 memset (d5, 0, PE_IDATA5_SIZE);
2088 if (pe_use_nul_prefixed_import_tables)
2089 bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE);
2091 bfd_set_section_size (abfd, id4, 0);
2092 d4 = xmalloc (PE_IDATA4_SIZE);
2094 memset (d4, 0, PE_IDATA4_SIZE);
2096 bfd_set_symtab (abfd, symtab, symptr);
2098 bfd_set_section_contents (abfd, id2, d2, 0, 20);
2099 if (pe_use_nul_prefixed_import_tables)
2101 bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA5_SIZE);
2102 bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
2106 bfd_set_section_contents (abfd, id5, d5, 0, 0);
2107 bfd_set_section_contents (abfd, id4, d4, 0, 0);
2110 bfd_make_readable (abfd);
2114 /* .section .idata$4
2121 .global __my_dll_iname
2126 make_tail (bfd *parent)
2128 asection *id4, *id5, *id7;
2129 unsigned char *d4, *d5, *d7;
2134 oname = xmalloc (20);
2135 sprintf (oname, "d%06d.o", tmp_seq);
2138 abfd = bfd_create (oname, parent);
2139 bfd_find_target (pe_details->object_target, abfd);
2140 bfd_make_writable (abfd);
2142 bfd_set_format (abfd, bfd_object);
2143 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2146 symtab = xmalloc (5 * sizeof (asymbol *));
2147 id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
2148 id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
2149 id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
2150 quick_symbol (abfd, U (""), dll_symname, "_iname", id7, BSF_GLOBAL, 0);
2152 bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE);
2153 d4 = xmalloc (PE_IDATA4_SIZE);
2155 memset (d4, 0, PE_IDATA4_SIZE);
2157 bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
2158 d5 = xmalloc (PE_IDATA5_SIZE);
2160 memset (d5, 0, PE_IDATA5_SIZE);
2162 len = strlen (dll_filename) + 1;
2165 bfd_set_section_size (abfd, id7, len);
2168 strcpy ((char *) d7, dll_filename);
2169 /* If len was odd, the above
2170 strcpy leaves behind an undefined byte. That is harmless,
2171 but we set it to 0 just so the binary dumps are pretty. */
2174 bfd_set_symtab (abfd, symtab, symptr);
2176 bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
2177 bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA5_SIZE);
2178 bfd_set_section_contents (abfd, id7, d7, 0, len);
2180 bfd_make_readable (abfd);
2186 .global ___imp_function
2187 .global __imp__function
2189 jmp *__imp__function:
2203 .asciz "function" xlate? (add underscore, kill at) */
2205 static const unsigned char jmp_ix86_bytes[] =
2207 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
2215 .dw __imp_function */
2217 static const unsigned char jmp_sh_bytes[] =
2219 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
2223 lui $t0,<high:__imp_function>
2224 lw $t0,<low:__imp_function>
2228 static const unsigned char jmp_mips_bytes[] =
2230 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
2231 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
2234 static const unsigned char jmp_arm_bytes[] =
2236 0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */
2237 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */
2243 make_one (def_file_export *exp, bfd *parent, bfd_boolean include_jmp_stub)
2245 asection *tx, *id7, *id5, *id4, *id6;
2246 unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL;
2250 const unsigned char *jmp_bytes = NULL;
2251 int jmp_byte_count = 0;
2253 /* Include the jump stub section only if it is needed. A jump
2254 stub is needed if the symbol being imported <sym> is a function
2255 symbol and there is at least one undefined reference to that
2256 symbol. In other words, if all the import references to <sym> are
2257 explicitly through _declspec(dllimport) then the jump stub is not
2259 if (include_jmp_stub)
2261 switch (pe_details->pe_arch)
2264 jmp_bytes = jmp_ix86_bytes;
2265 jmp_byte_count = sizeof (jmp_ix86_bytes);
2268 jmp_bytes = jmp_sh_bytes;
2269 jmp_byte_count = sizeof (jmp_sh_bytes);
2272 jmp_bytes = jmp_mips_bytes;
2273 jmp_byte_count = sizeof (jmp_mips_bytes);
2276 case PE_ARCH_arm_wince:
2277 jmp_bytes = jmp_arm_bytes;
2278 jmp_byte_count = sizeof (jmp_arm_bytes);
2285 oname = xmalloc (20);
2286 sprintf (oname, "d%06d.o", tmp_seq);
2289 abfd = bfd_create (oname, parent);
2290 bfd_find_target (pe_details->object_target, abfd);
2291 bfd_make_writable (abfd);
2293 bfd_set_format (abfd, bfd_object);
2294 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2297 symtab = xmalloc (12 * sizeof (asymbol *));
2299 tx = quick_section (abfd, ".text", SEC_CODE | SEC_HAS_CONTENTS | SEC_READONLY, 2);
2300 id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
2301 id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
2302 id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
2303 id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2);
2305 if (*exp->internal_name == '@')
2307 quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
2309 if (include_jmp_stub)
2310 quick_symbol (abfd, "", exp->internal_name, "", tx, BSF_GLOBAL, 0);
2311 quick_symbol (abfd, "__imp_", exp->internal_name, "", id5,
2313 /* Fastcall applies only to functions,
2314 so no need for auto-import symbol. */
2318 quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
2320 if (include_jmp_stub)
2321 quick_symbol (abfd, U (""), exp->internal_name, "", tx,
2323 quick_symbol (abfd, "__imp_", U (""), exp->internal_name, id5,
2325 /* Symbol to reference ord/name of imported
2326 data symbol, used to implement auto-import. */
2328 quick_symbol (abfd, "__nm_", U (""), exp->internal_name, id6,
2331 if (pe_dll_compat_implib)
2332 quick_symbol (abfd, "___imp_", exp->internal_name, "", id5,
2335 if (include_jmp_stub)
2337 bfd_set_section_size (abfd, tx, jmp_byte_count);
2338 td = xmalloc (jmp_byte_count);
2340 memcpy (td, jmp_bytes, jmp_byte_count);
2342 switch (pe_details->pe_arch)
2345 #ifdef pe_use_x86_64
2346 quick_reloc (abfd, 2, BFD_RELOC_32_PCREL, 2);
2348 /* Mark this object as SAFESEH compatible. */
2349 quick_symbol (abfd, "", "@feat.00", "", bfd_abs_section_ptr,
2351 quick_reloc (abfd, 2, BFD_RELOC_32, 2);
2355 quick_reloc (abfd, 8, BFD_RELOC_32, 2);
2358 quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2);
2359 quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */
2360 quick_reloc (abfd, 4, BFD_RELOC_LO16, 2);
2363 case PE_ARCH_arm_wince:
2364 quick_reloc (abfd, 8, BFD_RELOC_32, 2);
2372 bfd_set_section_size (abfd, tx, 0);
2374 bfd_set_section_size (abfd, id7, 4);
2378 quick_reloc (abfd, 0, BFD_RELOC_RVA, 5);
2381 bfd_set_section_size (abfd, id5, PE_IDATA5_SIZE);
2382 d5 = xmalloc (PE_IDATA5_SIZE);
2384 memset (d5, 0, PE_IDATA5_SIZE);
2386 if (exp->flag_noname)
2388 d5[0] = exp->ordinal;
2389 d5[1] = exp->ordinal >> 8;
2390 d5[PE_IDATA5_SIZE - 1] = 0x80;
2394 quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
2398 bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE);
2399 d4 = xmalloc (PE_IDATA4_SIZE);
2401 memset (d4, 0, PE_IDATA4_SIZE);
2403 if (exp->flag_noname)
2405 d4[0] = exp->ordinal;
2406 d4[1] = exp->ordinal >> 8;
2407 d4[PE_IDATA4_SIZE - 1] = 0x80;
2411 quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
2415 if (exp->flag_noname)
2418 bfd_set_section_size (abfd, id6, 0);
2424 /* { short, asciz } */
2426 len = 2 + strlen (exp->its_name) + 1;
2428 len = 2 + strlen (exp->name) + 1;
2431 bfd_set_section_size (abfd, id6, len);
2434 memset (d6, 0, len);
2436 /* PR 20880: Use exp->hint as a backup, just in case exp->ordinal
2437 contains an invalid value (-1). */
2438 ord = (exp->ordinal >= 0) ? exp->ordinal : exp->hint;
2443 strcpy ((char*) d6 + 2, exp->its_name);
2445 strcpy ((char *) d6 + 2, exp->name);
2448 bfd_set_symtab (abfd, symtab, symptr);
2450 if (include_jmp_stub)
2451 bfd_set_section_contents (abfd, tx, td, 0, jmp_byte_count);
2452 bfd_set_section_contents (abfd, id7, d7, 0, 4);
2453 bfd_set_section_contents (abfd, id5, d5, 0, PE_IDATA5_SIZE);
2454 bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE);
2455 if (!exp->flag_noname)
2456 bfd_set_section_contents (abfd, id6, d6, 0, len);
2458 bfd_make_readable (abfd);
2463 make_singleton_name_thunk (const char *import, bfd *parent)
2465 /* Name thunks go to idata$4. */
2471 oname = xmalloc (20);
2472 sprintf (oname, "nmth%06d.o", tmp_seq);
2475 abfd = bfd_create (oname, parent);
2476 bfd_find_target (pe_details->object_target, abfd);
2477 bfd_make_writable (abfd);
2479 bfd_set_format (abfd, bfd_object);
2480 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2483 symtab = xmalloc (3 * sizeof (asymbol *));
2484 id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
2485 quick_symbol (abfd, "__nm_thnk_", import, "", id4, BSF_GLOBAL, 0);
2486 quick_symbol (abfd, "__nm_", import, "", UNDSEC, BSF_GLOBAL, 0);
2488 /* We need space for the real thunk and for the null terminator. */
2489 bfd_set_section_size (abfd, id4, PE_IDATA4_SIZE * 2);
2490 d4 = xmalloc (PE_IDATA4_SIZE * 2);
2492 memset (d4, 0, PE_IDATA4_SIZE * 2);
2493 quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
2496 bfd_set_symtab (abfd, symtab, symptr);
2498 bfd_set_section_contents (abfd, id4, d4, 0, PE_IDATA4_SIZE * 2);
2500 bfd_make_readable (abfd);
2505 make_import_fixup_mark (arelent *rel, char *name)
2507 /* We convert reloc to symbol, for later reference. */
2508 static unsigned int counter;
2509 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
2510 bfd *abfd = bfd_asymbol_bfd (sym);
2511 struct bfd_link_hash_entry *bh;
2512 char *fixup_name, buf[26];
2515 /* "name" buffer has space before the symbol name for prefixes. */
2516 sprintf (buf, "__fu%d_", counter++);
2517 prefix_len = strlen (buf);
2518 fixup_name = name - prefix_len;
2519 memcpy (fixup_name, buf, prefix_len);
2522 bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL,
2523 current_sec, /* sym->section, */
2524 rel->address, NULL, TRUE, FALSE, &bh);
2526 return bh->root.string;
2529 /* .section .idata$2
2530 .rva __nm_thnk_SYM (singleton thunk with name of func)
2533 .rva __my_dll_iname (name of dll)
2534 .rva __fuNN_SYM (pointer to reference (address) in text) */
2537 make_import_fixup_entry (const char *name,
2538 const char *fixup_name,
2539 const char *symname,
2547 oname = xmalloc (20);
2548 sprintf (oname, "fu%06d.o", tmp_seq);
2551 abfd = bfd_create (oname, parent);
2552 bfd_find_target (pe_details->object_target, abfd);
2553 bfd_make_writable (abfd);
2555 bfd_set_format (abfd, bfd_object);
2556 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2559 symtab = xmalloc (6 * sizeof (asymbol *));
2560 id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2);
2562 quick_symbol (abfd, "__nm_thnk_", name, "", UNDSEC, BSF_GLOBAL, 0);
2563 quick_symbol (abfd, U (""), symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
2564 quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
2566 bfd_set_section_size (abfd, id2, 20);
2571 quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
2572 quick_reloc (abfd, 12, BFD_RELOC_RVA, 2);
2573 quick_reloc (abfd, 16, BFD_RELOC_RVA, 3);
2576 bfd_set_symtab (abfd, symtab, symptr);
2578 bfd_set_section_contents (abfd, id2, d2, 0, 20);
2580 bfd_make_readable (abfd);
2584 /* .section .rdata_runtime_pseudo_reloc
2586 .rva __fuNN_SYM (pointer to reference (address) in text) */
2589 make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED,
2590 const char *fixup_name,
2591 bfd_vma addend ATTRIBUTE_UNUSED,
2596 unsigned char *rt_rel_d;
2601 oname = xmalloc (20);
2602 sprintf (oname, "rtr%06d.o", tmp_seq);
2605 abfd = bfd_create (oname, parent);
2606 bfd_find_target (pe_details->object_target, abfd);
2607 bfd_make_writable (abfd);
2609 bfd_set_format (abfd, bfd_object);
2610 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2612 if (link_info.pei386_runtime_pseudo_reloc == 2)
2614 if (runtime_pseudp_reloc_v2_init)
2615 size = 3 * sizeof (asymbol *);
2617 size = 6 * sizeof (asymbol *);
2620 size = 2 * sizeof (asymbol *);
2623 symtab = xmalloc (size);
2626 = quick_section (abfd, ".rdata_runtime_pseudo_reloc", SEC_HAS_CONTENTS, 2);
2628 quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
2630 if (link_info.pei386_runtime_pseudo_reloc == 2)
2633 if (!runtime_pseudp_reloc_v2_init)
2636 runtime_pseudp_reloc_v2_init = TRUE;
2639 quick_symbol (abfd, "__imp_", name, "", UNDSEC, BSF_GLOBAL, 0);
2641 bfd_set_section_size (abfd, rt_rel, size);
2642 rt_rel_d = xmalloc (size);
2643 rt_rel->contents = rt_rel_d;
2644 memset (rt_rel_d, 0, size);
2645 quick_reloc (abfd, size - 8, BFD_RELOC_RVA, 1);
2646 quick_reloc (abfd, size - 12, BFD_RELOC_RVA, 2);
2647 bfd_put_32 (abfd, bitsize, rt_rel_d + (size - 4));
2649 bfd_put_32 (abfd, 1, rt_rel_d + 8);
2650 save_relocs (rt_rel);
2652 bfd_set_symtab (abfd, symtab, symptr);
2654 bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, size);
2658 bfd_set_section_size (abfd, rt_rel, 8);
2659 rt_rel_d = xmalloc (8);
2660 rt_rel->contents = rt_rel_d;
2661 memset (rt_rel_d, 0, 8);
2663 bfd_put_32 (abfd, addend, rt_rel_d);
2664 quick_reloc (abfd, 4, BFD_RELOC_RVA, 1);
2666 save_relocs (rt_rel);
2668 bfd_set_symtab (abfd, symtab, symptr);
2670 bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, 8);
2673 bfd_make_readable (abfd);
2678 .rva __pei386_runtime_relocator */
2681 pe_create_runtime_relocator_reference (bfd *parent)
2683 asection *extern_rt_rel;
2684 unsigned char *extern_rt_rel_d;
2688 oname = xmalloc (20);
2689 sprintf (oname, "ertr%06d.o", tmp_seq);
2692 abfd = bfd_create (oname, parent);
2693 bfd_find_target (pe_details->object_target, abfd);
2694 bfd_make_writable (abfd);
2696 bfd_set_format (abfd, bfd_object);
2697 bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
2700 symtab = xmalloc (2 * sizeof (asymbol *));
2701 extern_rt_rel = quick_section (abfd, ".rdata", SEC_HAS_CONTENTS, 2);
2703 quick_symbol (abfd, "", U ("_pei386_runtime_relocator"), "", UNDSEC,
2706 bfd_set_section_size (abfd, extern_rt_rel, PE_IDATA5_SIZE);
2707 extern_rt_rel_d = xcalloc (1, PE_IDATA5_SIZE);
2708 extern_rt_rel->contents = extern_rt_rel_d;
2710 quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
2711 save_relocs (extern_rt_rel);
2713 bfd_set_symtab (abfd, symtab, symptr);
2715 bfd_set_section_contents (abfd, extern_rt_rel, extern_rt_rel_d, 0, PE_IDATA5_SIZE);
2717 bfd_make_readable (abfd);
2722 pe_create_import_fixup (arelent *rel, asection *s, bfd_vma addend, char *name,
2723 const char *symname)
2725 const char *fixup_name = make_import_fixup_mark (rel, name);
2728 /* This is the original implementation of the auto-import feature, which
2729 primarily relied on the OS loader to patch things up with some help
2730 from the pseudo-relocator to overcome the main limitation. See the
2731 comment at the beginning of the file for an overview of the feature. */
2732 if (link_info.pei386_runtime_pseudo_reloc != 2)
2734 struct bfd_link_hash_entry *name_thunk_sym;
2735 /* name buffer is allocated with space at beginning for prefixes. */
2736 char *thname = name - (sizeof "__nm_thnk_" - 1);
2737 memcpy (thname, "__nm_thnk_", sizeof "__nm_thnk_" - 1);
2738 name_thunk_sym = bfd_link_hash_lookup (link_info.hash, thname, 0, 0, 1);
2740 if (!(name_thunk_sym && name_thunk_sym->type == bfd_link_hash_defined))
2742 b = make_singleton_name_thunk (name, link_info.output_bfd);
2743 add_bfd_to_link (b, b->filename, &link_info);
2745 /* If we ever use autoimport, we have to cast text section writable. */
2746 config.text_read_only = FALSE;
2747 link_info.output_bfd->flags &= ~WP_TEXT;
2750 if (addend == 0 || link_info.pei386_runtime_pseudo_reloc == 1)
2752 b = make_import_fixup_entry (name, fixup_name, symname,
2753 link_info.output_bfd);
2754 add_bfd_to_link (b, b->filename, &link_info);
2758 /* In the original implementation, the pseudo-relocator was only used when
2759 the addend was not null. In the new implementation, the OS loader is
2760 completely bypassed and the pseudo-relocator does the entire work. */
2761 if ((addend != 0 && link_info.pei386_runtime_pseudo_reloc == 1)
2762 || link_info.pei386_runtime_pseudo_reloc == 2)
2764 if (pe_dll_extra_pe_debug)
2765 printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n",
2766 fixup_name, (int) addend);
2768 b = make_runtime_pseudo_reloc (name, fixup_name, addend, rel->howto->bitsize,
2769 link_info.output_bfd);
2770 add_bfd_to_link (b, b->filename, &link_info);
2772 if (runtime_pseudo_relocs_created++ == 0)
2774 b = pe_create_runtime_relocator_reference (link_info.output_bfd);
2775 add_bfd_to_link (b, b->filename, &link_info);
2779 else if (addend != 0)
2780 einfo (_("%X%P: %C: variable '%pT' can't be auto-imported; please read the documentation for ld's --enable-auto-import for details\n"),
2781 s->owner, s, rel->address, (*rel->sym_ptr_ptr)->name);
2785 pe_dll_generate_implib (def_file *def, const char *impfilename, struct bfd_link_info *info)
2794 dll_filename = (def->name) ? def->name : dll_name;
2795 dll_symname = xstrdup (dll_filename);
2796 for (i = 0; dll_symname[i]; i++)
2797 if (!ISALNUM (dll_symname[i]))
2798 dll_symname[i] = '_';
2800 unlink_if_ordinary (impfilename);
2802 outarch = bfd_openw (impfilename, 0);
2806 /* xgettext:c-format */
2807 einfo (_("%X%P: can't open .lib file: %s\n"), impfilename);
2812 /* xgettext:c-format */
2813 info_msg (_("Creating library file: %s\n"), impfilename);
2815 bfd_set_format (outarch, bfd_archive);
2816 outarch->has_armap = 1;
2818 /* Work out a reasonable size of things to put onto one line. */
2819 ar_head = make_head (outarch);
2821 /* Iterate the input BFDs, looking for exclude-modules-for-implib. */
2822 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
2824 /* Iterate the exclude list. */
2825 struct exclude_list_struct *ex;
2827 for (ex = excludes, found = 0; ex && !found; ex = ex->next)
2829 if (ex->type != EXCLUDEFORIMPLIB)
2831 found = (filename_cmp (ex->string, ibfd->filename) == 0);
2833 /* If it matched, we must open a fresh BFD for it (the original
2834 input BFD is still needed for the DLL's final link) and add
2835 it into the archive member chain. */
2838 bfd *newbfd = bfd_openr (ibfd->my_archive
2839 ? ibfd->my_archive->filename : ibfd->filename, NULL);
2842 einfo (_("%X%P: bfd_openr %s: %E\n"), ibfd->filename);
2845 if (ibfd->my_archive)
2847 /* Must now iterate through archive until we find the
2848 required member. A minor shame that we'll open the
2849 archive once per member that we require from it, and
2850 leak those archive bfds rather than reuse them. */
2851 bfd *arbfd = newbfd;
2852 if (!bfd_check_format_matches (arbfd, bfd_archive, NULL))
2854 einfo (_("%X%P: %s(%s): can't find member in non-archive file"),
2855 ibfd->my_archive->filename, ibfd->filename);
2859 while ((newbfd = bfd_openr_next_archived_file (arbfd, newbfd)) != 0)
2861 if (filename_cmp (newbfd->filename, ibfd->filename) == 0)
2866 einfo (_("%X%P: %s(%s): can't find member in archive"),
2867 ibfd->my_archive->filename, ibfd->filename);
2871 newbfd->archive_next = head;
2876 for (i = 0; i < def->num_exports; i++)
2878 /* The import library doesn't know about the internal name. */
2879 char *internal = def->exports[i].internal_name;
2882 /* Don't add PRIVATE entries to import lib. */
2883 if (pe_def_file->exports[i].flag_private)
2886 def->exports[i].internal_name = def->exports[i].name;
2888 /* PR 19803: If a symbol has been discard due to garbage
2889 collection then do not create any exports for it. */
2891 struct coff_link_hash_entry *h;
2893 h = coff_link_hash_lookup (coff_hash_table (info), internal,
2894 FALSE, FALSE, FALSE);
2896 /* If the symbol is hidden and undefined then it
2897 has been swept up by garbage collection. */
2898 && h->symbol_class == C_HIDDEN
2899 && h->root.u.def.section == bfd_und_section_ptr)
2902 /* If necessary, check with an underscore prefix as well. */
2903 if (pe_details->underscored && internal[0] != '@')
2907 name = xmalloc (strlen (internal) + 2);
2908 sprintf (name, "_%s", internal);
2910 h = coff_link_hash_lookup (coff_hash_table (info), name,
2911 FALSE, FALSE, FALSE);
2915 /* If the symbol is hidden and undefined then it
2916 has been swept up by garbage collection. */
2917 && h->symbol_class == C_HIDDEN
2918 && h->root.u.def.section == bfd_und_section_ptr)
2923 n = make_one (def->exports + i, outarch,
2924 ! (def->exports + i)->flag_data);
2925 n->archive_next = head;
2927 def->exports[i].internal_name = internal;
2930 ar_tail = make_tail (outarch);
2932 if (ar_head == NULL || ar_tail == NULL)
2935 /* Now stick them all into the archive. */
2936 ar_head->archive_next = head;
2937 ar_tail->archive_next = ar_head;
2940 if (! bfd_set_archive_head (outarch, head))
2941 einfo ("%X%P: bfd_set_archive_head: %E\n");
2943 if (! bfd_close (outarch))
2944 einfo ("%X%P: bfd_close %s: %E\n", impfilename);
2946 while (head != NULL)
2948 bfd *n = head->archive_next;
2954 static int undef_count = 0;
2962 static struct key_value *udef_table;
2964 static int undef_sort_cmp (const void *l1, const void *r1)
2966 const struct key_value *l = l1;
2967 const struct key_value *r = r1;
2969 return strcmp (l->key, r->key);
2972 static struct bfd_link_hash_entry *
2973 pe_find_cdecl_alias_match (struct bfd_link_info *linfo, char *name)
2975 struct bfd_link_hash_entry *h = NULL;
2976 struct key_value *kv;
2977 struct key_value key;
2978 char *at, *lname = xmalloc (strlen (name) + 3);
2980 strcpy (lname, name);
2982 at = strchr (lname + (lname[0] == '@'), '@');
2987 kv = bsearch (&key, udef_table, undef_count, sizeof (struct key_value),
2992 h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
2993 if (h->type == bfd_link_hash_undefined)
2997 if (lname[0] == '?')
3000 if (at || lname[0] == '@')
3002 if (lname[0] == '@')
3004 if (pe_details->underscored)
3007 strcpy (lname, lname + 1);
3009 kv = bsearch (&key, udef_table, undef_count,
3010 sizeof (struct key_value), undef_sort_cmp);
3013 h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
3014 if (h->type == bfd_link_hash_undefined)
3019 *strchr (lname, '@') = 0;
3021 kv = bsearch (&key, udef_table, undef_count,
3022 sizeof (struct key_value), undef_sort_cmp);
3025 h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
3026 if (h->type == bfd_link_hash_undefined)
3032 strcat (lname, "@");
3034 kv = bsearch (&key, udef_table, undef_count,
3035 sizeof (struct key_value), undef_sort_cmp);
3039 h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
3040 if (h->type == bfd_link_hash_undefined)
3044 if (lname[0] == '_' && pe_details->underscored)
3048 memmove (lname + 1, lname, strlen (lname) + 1);
3053 kv = bsearch (&key, udef_table, undef_count,
3054 sizeof (struct key_value), undef_sort_cmp);
3058 h = bfd_link_hash_lookup (linfo->hash, kv->oname, FALSE, FALSE, FALSE);
3059 if (h->type == bfd_link_hash_undefined)
3071 pe_undef_count (struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3072 void *inf ATTRIBUTE_UNUSED)
3074 if (h->type == bfd_link_hash_undefined)
3080 pe_undef_fill (struct bfd_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
3082 if (h->type == bfd_link_hash_undefined)
3086 udef_table[undef_count].key = xstrdup (h->root.string);
3087 at = strchr (udef_table[undef_count].key
3088 + (udef_table[undef_count].key[0] == '@'), '@');
3091 udef_table[undef_count].oname = h->root.string;
3098 pe_create_undef_table (void)
3102 /* count undefined symbols */
3104 bfd_link_hash_traverse (link_info.hash, pe_undef_count, "");
3106 /* create and fill the corresponding table */
3107 udef_table = xmalloc (undef_count * sizeof (struct key_value));
3110 bfd_link_hash_traverse (link_info.hash, pe_undef_fill, "");
3113 qsort (udef_table, undef_count, sizeof (struct key_value), undef_sort_cmp);
3117 add_bfd_to_link (bfd *abfd, const char *name, struct bfd_link_info *linfo)
3119 lang_input_statement_type *fake_file;
3121 fake_file = lang_add_input_file (name,
3122 lang_input_file_is_fake_enum,
3124 fake_file->the_bfd = abfd;
3125 ldlang_add_file (fake_file);
3127 if (!bfd_link_add_symbols (abfd, linfo))
3128 einfo (_("%X%P: add symbols %s: %E\n"), name);
3132 pe_process_import_defs (bfd *output_bfd, struct bfd_link_info *linfo)
3135 def_file_module *module;
3136 def_file_import *imp;
3138 pe_dll_id_target (bfd_get_target (output_bfd));
3143 imp = pe_def_file->imports;
3145 pe_create_undef_table ();
3147 for (module = pe_def_file->modules; module; module = module->next)
3149 int do_this_dll = 0;
3151 for (i = 0; i < pe_def_file->num_imports && imp[i].module != module; i++)
3153 if (i >= pe_def_file->num_imports)
3156 dll_filename = module->name;
3157 dll_symname = xstrdup (module->name);
3158 for (j = 0; dll_symname[j]; j++)
3159 if (!ISALNUM (dll_symname[j]))
3160 dll_symname[j] = '_';
3162 for (; i < pe_def_file->num_imports && imp[i].module == module; i++)
3164 def_file_export exp;
3165 struct bfd_link_hash_entry *blhe;
3166 int lead_at = (*imp[i].internal_name == '@');
3167 /* See if we need this import. */
3168 size_t len = strlen (imp[i].internal_name);
3169 char *name = xmalloc (len + 2 + 6);
3170 bfd_boolean include_jmp_stub = FALSE;
3171 bfd_boolean is_cdecl = FALSE;
3172 bfd_boolean is_undef = FALSE;
3174 if (!lead_at && strchr (imp[i].internal_name, '@') == NULL)
3178 sprintf (name, "%s", imp[i].internal_name);
3180 sprintf (name, "%s%s",U (""), imp[i].internal_name);
3182 blhe = bfd_link_hash_lookup (linfo->hash, name,
3183 FALSE, FALSE, FALSE);
3185 /* Include the jump stub for <sym> only if the <sym>
3187 if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined))
3190 sprintf (name, "%s%s", "__imp_", imp[i].internal_name);
3192 sprintf (name, "%s%s%s", "__imp_", U (""),
3193 imp[i].internal_name);
3195 blhe = bfd_link_hash_lookup (linfo->hash, name,
3196 FALSE, FALSE, FALSE);
3198 is_undef = (blhe->type == bfd_link_hash_undefined);
3202 include_jmp_stub = TRUE;
3203 is_undef = (blhe->type == bfd_link_hash_undefined);
3206 if (is_cdecl && (!blhe || (blhe && blhe->type != bfd_link_hash_undefined)))
3208 sprintf (name, "%s%s",U (""), imp[i].internal_name);
3209 blhe = pe_find_cdecl_alias_match (linfo, name);
3210 include_jmp_stub = TRUE;
3212 is_undef = (blhe->type == bfd_link_hash_undefined);
3223 bfd *ar_head = make_head (output_bfd);
3224 add_bfd_to_link (ar_head, ar_head->filename, linfo);
3227 exp.internal_name = imp[i].internal_name;
3228 exp.name = imp[i].name;
3229 exp.its_name = imp[i].its_name;
3230 exp.ordinal = imp[i].ordinal;
3231 exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0;
3232 exp.flag_private = 0;
3233 exp.flag_constant = 0;
3234 exp.flag_data = imp[i].data;
3235 exp.flag_noname = exp.name ? 0 : 1;
3236 one = make_one (&exp, output_bfd, (! exp.flag_data) && include_jmp_stub);
3237 add_bfd_to_link (one, one->filename, linfo);
3242 bfd *ar_tail = make_tail (output_bfd);
3243 add_bfd_to_link (ar_tail, ar_tail->filename, linfo);
3252 free (udef_table[undef_count].key);
3257 /* We were handed a *.DLL file. Parse it and turn it into a set of
3258 IMPORTS directives in the def file. Return TRUE if the file was
3259 handled, FALSE if not. */
3262 pe_get16 (bfd *abfd, int where)
3266 bfd_seek (abfd, (file_ptr) where, SEEK_SET);
3267 bfd_bread (b, (bfd_size_type) 2, abfd);
3268 return b[0] + (b[1] << 8);
3272 pe_get32 (bfd *abfd, int where)
3276 bfd_seek (abfd, (file_ptr) where, SEEK_SET);
3277 bfd_bread (b, (bfd_size_type) 4, abfd);
3278 return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
3284 unsigned char *b = ptr;
3286 return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
3290 pe_implied_import_dll (const char *filename)
3293 bfd_vma pe_header_offset, opthdr_ofs, num_entries, i;
3294 bfd_vma export_rva, export_size, nsections, secptr, expptr;
3295 bfd_vma exp_funcbase;
3296 unsigned char *expdata;
3298 bfd_vma name_rvas, nexp;
3299 const char *dllname;
3300 /* Initialization with start > end guarantees that is_data
3301 will not be set by mistake, and avoids compiler warning. */
3302 bfd_vma data_start = 1;
3303 bfd_vma data_end = 0;
3304 bfd_vma rdata_start = 1;
3305 bfd_vma rdata_end = 0;
3306 bfd_vma bss_start = 1;
3307 bfd_vma bss_end = 0;
3310 /* No, I can't use bfd here. kernel32.dll puts its export table in
3311 the middle of the .rdata section. */
3312 dll = bfd_openr (filename, pe_details->target_name);
3315 einfo (_("%X%P: open %s: %E\n"), filename);
3319 /* PEI dlls seem to be bfd_objects. */
3320 if (!bfd_check_format (dll, bfd_object))
3322 einfo (_("%X%P: %s: this doesn't appear to be a DLL\n"), filename);
3326 /* Get pe_header, optional header and numbers of directory entries. */
3327 pe_header_offset = pe_get32 (dll, 0x3c);
3328 opthdr_ofs = pe_header_offset + 4 + 20;
3329 #ifdef pe_use_x86_64
3330 num_entries = pe_get32 (dll, opthdr_ofs + 92 + 4 * 4); /* & NumberOfRvaAndSizes. */
3332 num_entries = pe_get32 (dll, opthdr_ofs + 92);
3335 /* No import or export directory entry. */
3336 if (num_entries < 1)
3339 #ifdef pe_use_x86_64
3340 export_rva = pe_get32 (dll, opthdr_ofs + 96 + 4 * 4);
3341 export_size = pe_get32 (dll, opthdr_ofs + 100 + 4 * 4);
3343 export_rva = pe_get32 (dll, opthdr_ofs + 96);
3344 export_size = pe_get32 (dll, opthdr_ofs + 100);
3347 /* No export table - nothing to export. */
3348 if (export_size == 0)
3351 nsections = pe_get16 (dll, pe_header_offset + 4 + 2);
3352 secptr = (pe_header_offset + 4 + 20 +
3353 pe_get16 (dll, pe_header_offset + 4 + 16));
3356 /* Get the rva and size of the export section. */
3357 for (i = 0; i < nsections; i++)
3360 bfd_vma secptr1 = secptr + 40 * i;
3361 bfd_vma vaddr = pe_get32 (dll, secptr1 + 12);
3362 bfd_vma vsize = pe_get32 (dll, secptr1 + 16);
3363 bfd_vma fptr = pe_get32 (dll, secptr1 + 20);
3365 bfd_seek (dll, (file_ptr) secptr1, SEEK_SET);
3366 bfd_bread (sname, (bfd_size_type) 8, dll);
3368 if (vaddr <= export_rva && vaddr + vsize > export_rva)
3370 expptr = fptr + (export_rva - vaddr);
3371 if (export_rva + export_size > vaddr + vsize)
3372 export_size = vsize - (export_rva - vaddr);
3377 /* Scan sections and store the base and size of the
3378 data and bss segments in data/base_start/end. */
3379 for (i = 0; i < nsections; i++)
3381 bfd_vma secptr1 = secptr + 40 * i;
3382 bfd_vma vsize = pe_get32 (dll, secptr1 + 8);
3383 bfd_vma vaddr = pe_get32 (dll, secptr1 + 12);
3384 bfd_vma flags = pe_get32 (dll, secptr1 + 36);
3388 bfd_seek (dll, (file_ptr) secptr1 + 0, SEEK_SET);
3389 bfd_bread (sec_name, (bfd_size_type) 8, dll);
3391 if (strcmp(sec_name,".data") == 0)
3394 data_end = vaddr + vsize;
3396 if (pe_dll_extra_pe_debug)
3397 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3398 __FUNCTION__, sec_name, (unsigned long) vaddr,
3399 (unsigned long) (vaddr + vsize), (unsigned long) flags);
3401 else if (strcmp(sec_name,".rdata") == 0)
3403 rdata_start = vaddr;
3404 rdata_end = vaddr + vsize;
3406 if (pe_dll_extra_pe_debug)
3407 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3408 __FUNCTION__, sec_name, (unsigned long) vaddr,
3409 (unsigned long) (vaddr + vsize), (unsigned long) flags);
3411 else if (strcmp (sec_name,".bss") == 0)
3414 bss_end = vaddr + vsize;
3416 if (pe_dll_extra_pe_debug)
3417 printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
3418 __FUNCTION__, sec_name, (unsigned long) vaddr,
3419 (unsigned long) (vaddr + vsize), (unsigned long) flags);
3423 expdata = xmalloc (export_size);
3424 bfd_seek (dll, (file_ptr) expptr, SEEK_SET);
3425 bfd_bread (expdata, (bfd_size_type) export_size, dll);
3426 erva = (char *) expdata - export_rva;
3428 if (pe_def_file == 0)
3429 pe_def_file = def_file_empty ();
3431 nexp = pe_as32 (expdata + 24);
3432 name_rvas = pe_as32 (expdata + 32);
3433 exp_funcbase = pe_as32 (expdata + 28);
3435 /* Use internal dll name instead of filename
3436 to enable symbolic dll linking. */
3437 dllname = erva + pe_as32 (expdata + 12);
3439 /* Check to see if the dll has already been added to
3440 the definition list and if so return without error.
3441 This avoids multiple symbol definitions. */
3442 if (def_get_module (pe_def_file, dllname))
3444 if (pe_dll_extra_pe_debug)
3445 printf ("%s is already loaded\n", dllname);
3449 /* This is an optimized version of the insertion loop, which avoids lots of
3450 calls to realloc and memmove from def_file_add_import. */
3451 if ((from = def_file_add_import_from (pe_def_file, nexp,
3452 erva + pe_as32 (erva + name_rvas),
3453 dllname, 0, NULL, NULL)) >= 0)
3455 for (i = 0; i < nexp; i++)
3457 /* Pointer to the names vector. */
3458 bfd_vma name_rva = pe_as32 (erva + name_rvas + i * 4);
3459 def_file_import *imp;
3460 /* Pointer to the function address vector. */
3461 bfd_vma func_rva = pe_as32 (erva + exp_funcbase + i * 4);
3462 /* is_data is true if the address is in the data, rdata or bss
3465 (func_rva >= data_start && func_rva < data_end)
3466 || (func_rva >= rdata_start && func_rva < rdata_end)
3467 || (func_rva >= bss_start && func_rva < bss_end);
3469 imp = def_file_add_import_at (pe_def_file, from + i, erva + name_rva,
3470 dllname, i, NULL, NULL);
3471 /* Mark symbol type. */
3472 imp->data = is_data;
3474 if (pe_dll_extra_pe_debug)
3475 printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
3476 __FUNCTION__, dllname, erva + name_rva,
3477 (unsigned long) func_rva, is_data ? "(data)" : "");
3483 /* Iterate through the list of symbols. */
3484 for (i = 0; i < nexp; i++)
3486 /* Pointer to the names vector. */
3487 bfd_vma name_rva = pe_as32 (erva + name_rvas + i * 4);
3488 def_file_import *imp;
3489 /* Pointer to the function address vector. */
3490 bfd_vma func_rva = pe_as32 (erva + exp_funcbase + i * 4);
3493 /* Skip unwanted symbols, which are
3494 exported in buggy auto-import releases. */
3495 if (! CONST_STRNEQ (erva + name_rva, "__nm_"))
3498 /* is_data is true if the address is in the data, rdata or bss
3501 (func_rva >= data_start && func_rva < data_end)
3502 || (func_rva >= rdata_start && func_rva < rdata_end)
3503 || (func_rva >= bss_start && func_rva < bss_end);
3505 imp = def_file_add_import (pe_def_file, erva + name_rva,
3506 dllname, i, NULL, NULL, &is_dup);
3507 /* Mark symbol type. */
3509 imp->data = is_data;
3511 if (pe_dll_extra_pe_debug)
3512 printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
3513 __FUNCTION__, dllname, erva + name_rva,
3514 (unsigned long) func_rva, is_data ? "(data)" : "");
3522 pe_output_file_set_long_section_names (bfd *abfd)
3524 if (pe_use_coff_long_section_names < 0)
3526 if (!bfd_coff_set_long_section_names (abfd, pe_use_coff_long_section_names))
3527 einfo (_("%X%P: error: can't use long section names on this arch\n"));
3530 /* These are the main functions, called from the emulation. The first
3531 is called after the bfds are read, so we can guess at how much space
3532 we need. The second is called after everything is placed, so we
3533 can put the right values in place. */
3536 pe_dll_build_sections (bfd *abfd, struct bfd_link_info *info)
3538 pe_dll_id_target (bfd_get_target (abfd));
3539 pe_output_file_set_long_section_names (abfd);
3540 process_def_file_and_drectve (abfd, info);
3542 if (pe_def_file->num_exports == 0 && !bfd_link_pic (info))
3545 generate_edata (abfd, info);
3546 build_filler_bfd (1);
3547 pe_output_file_set_long_section_names (filler_bfd);
3551 pe_exe_build_sections (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
3553 pe_dll_id_target (bfd_get_target (abfd));
3554 pe_output_file_set_long_section_names (abfd);
3555 build_filler_bfd (0);
3556 pe_output_file_set_long_section_names (filler_bfd);
3560 pe_dll_fill_sections (bfd *abfd, struct bfd_link_info *info)
3562 pe_dll_id_target (bfd_get_target (abfd));
3563 pe_output_file_set_long_section_names (abfd);
3564 image_base = pe_data (abfd)->pe_opthdr.ImageBase;
3566 generate_reloc (abfd, info);
3569 bfd_set_section_size (filler_bfd, reloc_s, reloc_sz);
3571 /* Resize the sections. */
3572 lang_reset_memory_regions ();
3573 lang_size_sections (NULL, TRUE);
3575 /* Redo special stuff. */
3576 ldemul_after_allocation ();
3578 /* Do the assignments again. */
3579 lang_do_assignments (lang_final_phase_enum);
3582 fill_edata (abfd, info);
3584 if (bfd_link_dll (info))
3585 pe_data (abfd)->dll = 1;
3587 edata_s->contents = edata_d;
3588 reloc_s->contents = reloc_d;
3592 pe_exe_fill_sections (bfd *abfd, struct bfd_link_info *info)
3594 pe_dll_id_target (bfd_get_target (abfd));
3595 pe_output_file_set_long_section_names (abfd);
3596 image_base = pe_data (abfd)->pe_opthdr.ImageBase;
3598 generate_reloc (abfd, info);
3601 bfd_set_section_size (filler_bfd, reloc_s, reloc_sz);
3603 /* Resize the sections. */
3604 lang_reset_memory_regions ();
3605 lang_size_sections (NULL, TRUE);
3607 /* Redo special stuff. */
3608 ldemul_after_allocation ();
3610 /* Do the assignments again. */
3611 lang_do_assignments (lang_final_phase_enum);
3613 reloc_s->contents = reloc_d;
3617 pe_bfd_is_dll (bfd *abfd)
3619 return (bfd_get_format (abfd) == bfd_object
3621 && pe_data (abfd)->dll);