1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005 Free Software Foundation, Inc.
4 Written by Cygnus Solutions.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* Most of this hacked by Steve Chamberlain,
25 PE/PEI rearrangement (and code added): Donn Terry
26 Softway Systems, Inc. */
28 /* Hey look, some documentation [and in a place you expect to find it]!
30 The main reference for the pei format is "Microsoft Portable Executable
31 and Common Object File Format Specification 4.1". Get it if you need to
32 do some serious hacking on this code.
35 "Peering Inside the PE: A Tour of the Win32 Portable Executable
36 File Format", MSJ 1994, Volume 9.
38 The *sole* difference between the pe format and the pei format is that the
39 latter has an MSDOS 2.0 .exe header on the front that prints the message
40 "This app must be run under Windows." (or some such).
41 (FIXME: Whether that statement is *really* true or not is unknown.
42 Are there more subtle differences between pe and pei formats?
43 For now assume there aren't. If you find one, then for God sakes
46 The Microsoft docs use the word "image" instead of "executable" because
47 the former can also refer to a DLL (shared library). Confusion can arise
48 because the `i' in `pei' also refers to "image". The `pe' format can
49 also create images (i.e. executables), it's just that to run on a win32
50 system you need to use the pei format.
52 FIXME: Please add more docs here so the next poor fool that has to hack
53 on this code has a chance of getting something accomplished without
54 wasting too much time. */
58 static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data
)
59 PARAMS ((bfd
*, PTR
)) =
60 #ifndef coff_bfd_print_private_bfd_data
63 coff_bfd_print_private_bfd_data
;
64 #undef coff_bfd_print_private_bfd_data
67 static bfd_boolean pe_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
68 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
70 static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data
)
71 PARAMS ((bfd
*, bfd
*)) =
72 #ifndef coff_bfd_copy_private_bfd_data
75 coff_bfd_copy_private_bfd_data
;
76 #undef coff_bfd_copy_private_bfd_data
79 static bfd_boolean pe_bfd_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
80 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
82 #define coff_mkobject pe_mkobject
83 #define coff_mkobject_hook pe_mkobject_hook
85 #ifndef NO_COFF_RELOCS
86 static void coff_swap_reloc_in
PARAMS ((bfd
*, PTR
, PTR
));
87 static unsigned int coff_swap_reloc_out
PARAMS ((bfd
*, PTR
, PTR
));
89 static void coff_swap_filehdr_in
PARAMS ((bfd
*, PTR
, PTR
));
90 static void coff_swap_scnhdr_in
PARAMS ((bfd
*, PTR
, PTR
));
91 static bfd_boolean pe_mkobject
PARAMS ((bfd
*));
92 static PTR pe_mkobject_hook
PARAMS ((bfd
*, PTR
, PTR
));
94 #ifdef COFF_IMAGE_WITH_PE
95 /* This structure contains static variables used by the ILF code. */
96 typedef asection
* asection_ptr
;
102 struct bfd_in_memory
* bim
;
103 unsigned short magic
;
106 unsigned int relcount
;
108 coff_symbol_type
* sym_cache
;
109 coff_symbol_type
* sym_ptr
;
110 unsigned int sym_index
;
112 unsigned int * sym_table
;
113 unsigned int * table_ptr
;
115 combined_entry_type
* native_syms
;
116 combined_entry_type
* native_ptr
;
118 coff_symbol_type
** sym_ptr_table
;
119 coff_symbol_type
** sym_ptr_ptr
;
121 unsigned int sec_index
;
125 char * end_string_ptr
;
130 struct internal_reloc
* int_reltab
;
133 #endif /* COFF_IMAGE_WITH_PE */
135 /**********************************************************************/
137 #ifndef NO_COFF_RELOCS
139 coff_swap_reloc_in (abfd
, src
, dst
)
144 RELOC
*reloc_src
= (RELOC
*) src
;
145 struct internal_reloc
*reloc_dst
= (struct internal_reloc
*) dst
;
147 reloc_dst
->r_vaddr
= H_GET_32 (abfd
, reloc_src
->r_vaddr
);
148 reloc_dst
->r_symndx
= H_GET_S32 (abfd
, reloc_src
->r_symndx
);
150 reloc_dst
->r_type
= H_GET_16 (abfd
, reloc_src
->r_type
);
152 #ifdef SWAP_IN_RELOC_OFFSET
153 reloc_dst
->r_offset
= SWAP_IN_RELOC_OFFSET (abfd
, reloc_src
->r_offset
);
158 coff_swap_reloc_out (abfd
, src
, dst
)
163 struct internal_reloc
*reloc_src
= (struct internal_reloc
*)src
;
164 struct external_reloc
*reloc_dst
= (struct external_reloc
*)dst
;
165 H_PUT_32 (abfd
, reloc_src
->r_vaddr
, reloc_dst
->r_vaddr
);
166 H_PUT_32 (abfd
, reloc_src
->r_symndx
, reloc_dst
->r_symndx
);
168 H_PUT_16 (abfd
, reloc_src
->r_type
, reloc_dst
->r_type
);
170 #ifdef SWAP_OUT_RELOC_OFFSET
171 SWAP_OUT_RELOC_OFFSET (abfd
, reloc_src
->r_offset
, reloc_dst
->r_offset
);
173 #ifdef SWAP_OUT_RELOC_EXTRA
174 SWAP_OUT_RELOC_EXTRA(abfd
, reloc_src
, reloc_dst
);
178 #endif /* not NO_COFF_RELOCS */
181 coff_swap_filehdr_in (abfd
, src
, dst
)
186 FILHDR
*filehdr_src
= (FILHDR
*) src
;
187 struct internal_filehdr
*filehdr_dst
= (struct internal_filehdr
*) dst
;
188 filehdr_dst
->f_magic
= H_GET_16 (abfd
, filehdr_src
->f_magic
);
189 filehdr_dst
->f_nscns
= H_GET_16 (abfd
, filehdr_src
-> f_nscns
);
190 filehdr_dst
->f_timdat
= H_GET_32 (abfd
, filehdr_src
-> f_timdat
);
192 filehdr_dst
->f_nsyms
= H_GET_32 (abfd
, filehdr_src
-> f_nsyms
);
193 filehdr_dst
->f_flags
= H_GET_16 (abfd
, filehdr_src
-> f_flags
);
194 filehdr_dst
->f_symptr
= H_GET_32 (abfd
, filehdr_src
->f_symptr
);
196 /* Other people's tools sometimes generate headers with an nsyms but
198 if (filehdr_dst
->f_nsyms
!= 0 && filehdr_dst
->f_symptr
== 0)
200 filehdr_dst
->f_nsyms
= 0;
201 filehdr_dst
->f_flags
|= F_LSYMS
;
204 filehdr_dst
->f_opthdr
= H_GET_16 (abfd
, filehdr_src
-> f_opthdr
);
207 #ifdef COFF_IMAGE_WITH_PE
208 # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
210 # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
214 coff_swap_scnhdr_in (abfd
, ext
, in
)
219 SCNHDR
*scnhdr_ext
= (SCNHDR
*) ext
;
220 struct internal_scnhdr
*scnhdr_int
= (struct internal_scnhdr
*) in
;
222 memcpy(scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof (scnhdr_int
->s_name
));
223 scnhdr_int
->s_vaddr
= GET_SCNHDR_VADDR (abfd
, scnhdr_ext
->s_vaddr
);
224 scnhdr_int
->s_paddr
= GET_SCNHDR_PADDR (abfd
, scnhdr_ext
->s_paddr
);
225 scnhdr_int
->s_size
= GET_SCNHDR_SIZE (abfd
, scnhdr_ext
->s_size
);
226 scnhdr_int
->s_scnptr
= GET_SCNHDR_SCNPTR (abfd
, scnhdr_ext
->s_scnptr
);
227 scnhdr_int
->s_relptr
= GET_SCNHDR_RELPTR (abfd
, scnhdr_ext
->s_relptr
);
228 scnhdr_int
->s_lnnoptr
= GET_SCNHDR_LNNOPTR (abfd
, scnhdr_ext
->s_lnnoptr
);
229 scnhdr_int
->s_flags
= H_GET_32 (abfd
, scnhdr_ext
->s_flags
);
231 /* MS handles overflow of line numbers by carrying into the reloc
232 field (it appears). Since it's supposed to be zero for PE
233 *IMAGE* format, that's safe. This is still a bit iffy. */
234 #ifdef COFF_IMAGE_WITH_PE
235 scnhdr_int
->s_nlnno
= (H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
)
236 + (H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
) << 16));
237 scnhdr_int
->s_nreloc
= 0;
239 scnhdr_int
->s_nreloc
= H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
);
240 scnhdr_int
->s_nlnno
= H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
);
243 if (scnhdr_int
->s_vaddr
!= 0)
245 scnhdr_int
->s_vaddr
+= pe_data (abfd
)->pe_opthdr
.ImageBase
;
246 scnhdr_int
->s_vaddr
&= 0xffffffff;
249 #ifndef COFF_NO_HACK_SCNHDR_SIZE
250 /* If this section holds uninitialized data and is from an object file
251 or from an executable image that has not initialized the field,
252 or if the image is an executable file and the physical size is padded,
253 use the virtual size (stored in s_paddr) instead. */
254 if (scnhdr_int
->s_paddr
> 0
255 && (((scnhdr_int
->s_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) != 0
256 && (! bfd_pe_executable_p (abfd
) || scnhdr_int
->s_size
== 0))
257 || (bfd_pe_executable_p (abfd
) && scnhdr_int
->s_size
> scnhdr_int
->s_paddr
)))
259 scnhdr_int
->s_size
= scnhdr_int
->s_paddr
;
261 /* This code used to set scnhdr_int->s_paddr to 0. However,
262 coff_set_alignment_hook stores s_paddr in virt_size, which
263 only works if it correctly holds the virtual size of the
274 bfd_size_type amt
= sizeof (pe_data_type
);
276 abfd
->tdata
.pe_obj_data
= (struct pe_tdata
*) bfd_zalloc (abfd
, amt
);
278 if (abfd
->tdata
.pe_obj_data
== 0)
285 /* in_reloc_p is architecture dependent. */
286 pe
->in_reloc_p
= in_reloc_p
;
288 #ifdef PEI_FORCE_MINIMUM_ALIGNMENT
289 pe
->force_minimum_alignment
= 1;
291 #ifdef PEI_TARGET_SUBSYSTEM
292 pe
->target_subsystem
= PEI_TARGET_SUBSYSTEM
;
298 /* Create the COFF backend specific information. */
300 pe_mkobject_hook (abfd
, filehdr
, aouthdr
)
303 PTR aouthdr ATTRIBUTE_UNUSED
;
305 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
308 if (! pe_mkobject (abfd
))
312 pe
->coff
.sym_filepos
= internal_f
->f_symptr
;
313 /* These members communicate important constants about the symbol
314 table to GDB's symbol-reading code. These `constants'
315 unfortunately vary among coff implementations... */
316 pe
->coff
.local_n_btmask
= N_BTMASK
;
317 pe
->coff
.local_n_btshft
= N_BTSHFT
;
318 pe
->coff
.local_n_tmask
= N_TMASK
;
319 pe
->coff
.local_n_tshift
= N_TSHIFT
;
320 pe
->coff
.local_symesz
= SYMESZ
;
321 pe
->coff
.local_auxesz
= AUXESZ
;
322 pe
->coff
.local_linesz
= LINESZ
;
324 pe
->coff
.timestamp
= internal_f
->f_timdat
;
326 obj_raw_syment_count (abfd
) =
327 obj_conv_table_size (abfd
) =
330 pe
->real_flags
= internal_f
->f_flags
;
332 if ((internal_f
->f_flags
& F_DLL
) != 0)
335 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
336 abfd
->flags
|= HAS_DEBUG
;
338 #ifdef COFF_IMAGE_WITH_PE
340 pe
->pe_opthdr
= ((struct internal_aouthdr
*)aouthdr
)->pe
;
344 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
345 coff_data (abfd
) ->flags
= 0;
352 pe_print_private_bfd_data (abfd
, vfile
)
356 FILE *file
= (FILE *) vfile
;
358 if (!_bfd_XX_print_private_bfd_data_common (abfd
, vfile
))
361 if (pe_saved_coff_bfd_print_private_bfd_data
!= NULL
)
365 return pe_saved_coff_bfd_print_private_bfd_data (abfd
, vfile
);
371 /* Copy any private info we understand from the input bfd
372 to the output bfd. */
375 pe_bfd_copy_private_bfd_data (ibfd
, obfd
)
378 /* PR binutils/716: Copy the large address aware flag.
379 XXX: Should we be copying other flags or other fields in the pe_data()
381 if (pe_data (obfd
) != NULL
382 && pe_data (ibfd
) != NULL
383 && pe_data (ibfd
)->real_flags
& IMAGE_FILE_LARGE_ADDRESS_AWARE
)
384 pe_data (obfd
)->real_flags
|= IMAGE_FILE_LARGE_ADDRESS_AWARE
;
386 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd
, obfd
))
389 if (pe_saved_coff_bfd_copy_private_bfd_data
)
390 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd
, obfd
);
395 #define coff_bfd_copy_private_section_data \
396 _bfd_XX_bfd_copy_private_section_data
398 #define coff_get_symbol_info _bfd_XX_get_symbol_info
400 #ifdef COFF_IMAGE_WITH_PE
402 /* Code to handle Microsoft's Image Library Format.
403 Also known as LINK6 format.
404 Documentation about this format can be found at:
406 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
408 /* The following constants specify the sizes of the various data
409 structures that we have to create in order to build a bfd describing
410 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
411 and SIZEOF_IDATA7 below is to allow for the possibility that we might
412 need a padding byte in order to ensure 16 bit alignment for the section's
415 The value for SIZEOF_ILF_STRINGS is computed as follows:
417 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
418 per symbol for their names (longest section name is .idata$x).
420 There will be two symbols for the imported value, one the symbol name
421 and one with _imp__ prefixed. Allowing for the terminating nul's this
422 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
424 The strings in the string table must start STRING__SIZE_SIZE bytes into
425 the table in order to for the string lookup code in coffgen/coffcode to
427 #define NUM_ILF_RELOCS 8
428 #define NUM_ILF_SECTIONS 6
429 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
431 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
432 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
433 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
434 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
435 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
436 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
437 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
438 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
439 + 21 + strlen (source_dll) \
440 + NUM_ILF_SECTIONS * 9 \
442 #define SIZEOF_IDATA2 (5 * 4)
443 #define SIZEOF_IDATA4 (1 * 4)
444 #define SIZEOF_IDATA5 (1 * 4)
445 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
446 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
447 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
449 #define ILF_DATA_SIZE \
450 sizeof (* vars.bim) \
452 + SIZEOF_ILF_SYM_TABLE \
453 + SIZEOF_ILF_NATIVE_SYMS \
454 + SIZEOF_ILF_SYM_PTR_TABLE \
455 + SIZEOF_ILF_EXT_SYMS \
456 + SIZEOF_ILF_RELOCS \
457 + SIZEOF_ILF_INT_RELOCS \
458 + SIZEOF_ILF_STRINGS \
464 + SIZEOF_ILF_SECTIONS \
465 + MAX_TEXT_SECTION_SIZE
467 /* Create an empty relocation against the given symbol. */
469 pe_ILF_make_a_symbol_reloc (pe_ILF_vars
* vars
,
471 bfd_reloc_code_real_type reloc
,
472 struct bfd_symbol
** sym
,
473 unsigned int sym_index
)
476 struct internal_reloc
* internal
;
478 entry
= vars
->reltab
+ vars
->relcount
;
479 internal
= vars
->int_reltab
+ vars
->relcount
;
481 entry
->address
= address
;
483 entry
->howto
= bfd_reloc_type_lookup (vars
->abfd
, reloc
);
484 entry
->sym_ptr_ptr
= sym
;
486 internal
->r_vaddr
= address
;
487 internal
->r_symndx
= sym_index
;
488 internal
->r_type
= entry
->howto
->type
;
492 BFD_ASSERT (vars
->relcount
<= NUM_ILF_RELOCS
);
495 /* Create an empty relocation against the given section. */
497 pe_ILF_make_a_reloc (pe_ILF_vars
* vars
,
499 bfd_reloc_code_real_type reloc
,
502 pe_ILF_make_a_symbol_reloc (vars
, address
, reloc
, sec
->symbol_ptr_ptr
,
503 coff_section_data (vars
->abfd
, sec
)->i
);
506 /* Move the queued relocs into the given section. */
508 pe_ILF_save_relocs (pe_ILF_vars
* vars
,
511 /* Make sure that there is somewhere to store the internal relocs. */
512 if (coff_section_data (vars
->abfd
, sec
) == NULL
)
513 /* We should probably return an error indication here. */
516 coff_section_data (vars
->abfd
, sec
)->relocs
= vars
->int_reltab
;
517 coff_section_data (vars
->abfd
, sec
)->keep_relocs
= TRUE
;
519 sec
->relocation
= vars
->reltab
;
520 sec
->reloc_count
= vars
->relcount
;
521 sec
->flags
|= SEC_RELOC
;
523 vars
->reltab
+= vars
->relcount
;
524 vars
->int_reltab
+= vars
->relcount
;
527 BFD_ASSERT ((bfd_byte
*) vars
->int_reltab
< (bfd_byte
*) vars
->string_table
);
530 /* Create a global symbol and add it to the relevant tables. */
532 pe_ILF_make_a_symbol (pe_ILF_vars
* vars
,
534 const char * symbol_name
,
535 asection_ptr section
,
536 flagword extra_flags
)
538 coff_symbol_type
* sym
;
539 combined_entry_type
* ent
;
541 unsigned short sclass
;
543 if (extra_flags
& BSF_LOCAL
)
549 if (vars
->magic
== THUMBPEMAGIC
)
551 if (extra_flags
& BSF_FUNCTION
)
552 sclass
= C_THUMBEXTFUNC
;
553 else if (extra_flags
& BSF_LOCAL
)
554 sclass
= C_THUMBSTAT
;
560 BFD_ASSERT (vars
->sym_index
< NUM_ILF_SYMS
);
563 ent
= vars
->native_ptr
;
564 esym
= vars
->esym_ptr
;
566 /* Copy the symbol's name into the string table. */
567 sprintf (vars
->string_ptr
, "%s%s", prefix
, symbol_name
);
570 section
= (asection_ptr
) & bfd_und_section
;
572 /* Initialise the external symbol. */
573 H_PUT_32 (vars
->abfd
, vars
->string_ptr
- vars
->string_table
,
575 H_PUT_16 (vars
->abfd
, section
->target_index
, esym
->e_scnum
);
576 esym
->e_sclass
[0] = sclass
;
578 /* The following initialisations are unnecessary - the memory is
579 zero initialised. They are just kept here as reminders. */
581 /* Initialise the internal symbol structure. */
582 ent
->u
.syment
.n_sclass
= sclass
;
583 ent
->u
.syment
.n_scnum
= section
->target_index
;
584 ent
->u
.syment
._n
._n_n
._n_offset
= (long) sym
;
586 sym
->symbol
.the_bfd
= vars
->abfd
;
587 sym
->symbol
.name
= vars
->string_ptr
;
588 sym
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| extra_flags
;
589 sym
->symbol
.section
= section
;
592 * vars
->table_ptr
= vars
->sym_index
;
593 * vars
->sym_ptr_ptr
= sym
;
595 /* Adjust pointers for the next symbol. */
598 vars
->sym_ptr_ptr
++;
602 vars
->string_ptr
+= strlen (symbol_name
) + strlen (prefix
) + 1;
604 BFD_ASSERT (vars
->string_ptr
< vars
->end_string_ptr
);
607 /* Create a section. */
609 pe_ILF_make_a_section (pe_ILF_vars
* vars
,
612 flagword extra_flags
)
617 sec
= bfd_make_section_old_way (vars
->abfd
, name
);
621 flags
= SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
| SEC_IN_MEMORY
;
623 bfd_set_section_flags (vars
->abfd
, sec
, flags
| extra_flags
);
625 bfd_set_section_alignment (vars
->abfd
, sec
, 2);
627 /* Check that we will not run out of space. */
628 BFD_ASSERT (vars
->data
+ size
< vars
->bim
->buffer
+ vars
->bim
->size
);
630 /* Set the section size and contents. The actual
631 contents are filled in by our parent. */
632 bfd_set_section_size (vars
->abfd
, sec
, (bfd_size_type
) size
);
633 sec
->contents
= vars
->data
;
634 sec
->target_index
= vars
->sec_index
++;
636 /* Advance data pointer in the vars structure. */
639 /* Skip the padding byte if it was not needed.
640 The logic here is that if the string length is odd,
641 then the entire string length, including the null byte,
642 is even and so the extra, padding byte, is not needed. */
646 /* Create a coff_section_tdata structure for our use. */
647 sec
->used_by_bfd
= (struct coff_section_tdata
*) vars
->data
;
648 vars
->data
+= sizeof (struct coff_section_tdata
);
650 BFD_ASSERT (vars
->data
<= vars
->bim
->buffer
+ vars
->bim
->size
);
652 /* Create a symbol to refer to this section. */
653 pe_ILF_make_a_symbol (vars
, "", name
, sec
, BSF_LOCAL
);
655 /* Cache the index to the symbol in the coff_section_data structure. */
656 coff_section_data (vars
->abfd
, sec
)->i
= vars
->sym_index
- 1;
661 /* This structure contains the code that goes into the .text section
662 in order to perform a jump into the DLL lookup table. The entries
663 in the table are index by the magic number used to represent the
664 machine type in the PE file. The contents of the data[] arrays in
665 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
666 The SIZE field says how many bytes in the DATA array are actually
667 used. The OFFSET field says where in the data array the address
668 of the .idata$5 section should be placed. */
669 #define MAX_TEXT_SECTION_SIZE 32
673 unsigned short magic
;
674 unsigned char data
[MAX_TEXT_SECTION_SIZE
];
680 static jump_table jtab
[] =
684 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
690 { MC68MAGIC
, { /* XXX fill me in */ }, 0, 0 },
692 #ifdef MIPS_ARCH_MAGIC_WINCE
693 { MIPS_ARCH_MAGIC_WINCE
,
694 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
695 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
700 #ifdef SH_ARCH_MAGIC_WINCE
701 { SH_ARCH_MAGIC_WINCE
,
702 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
703 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
710 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
711 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
718 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
719 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
727 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
730 /* Build a full BFD from the information supplied in a ILF object. */
732 pe_ILF_build_a_bfd (bfd
* abfd
,
736 unsigned int ordinal
,
741 struct internal_filehdr internal_f
;
742 unsigned int import_type
;
743 unsigned int import_name_type
;
744 asection_ptr id4
, id5
, id6
= NULL
, text
= NULL
;
745 coff_symbol_type
** imp_sym
;
746 unsigned int imp_index
;
748 /* Decode and verify the types field of the ILF structure. */
749 import_type
= types
& 0x3;
750 import_name_type
= (types
& 0x1c) >> 2;
759 /* XXX code yet to be written. */
760 _bfd_error_handler (_("%B: Unhandled import type; %x"),
765 _bfd_error_handler (_("%B: Unrecognised import type; %x"),
770 switch (import_name_type
)
774 case IMPORT_NAME_NOPREFIX
:
775 case IMPORT_NAME_UNDECORATE
:
779 _bfd_error_handler (_("%B: Unrecognised import name type; %x"),
780 abfd
, import_name_type
);
784 /* Initialise local variables.
786 Note these are kept in a structure rather than being
787 declared as statics since bfd frowns on global variables.
789 We are going to construct the contents of the BFD in memory,
790 so allocate all the space that we will need right now. */
791 ptr
= bfd_zalloc (abfd
, (bfd_size_type
) ILF_DATA_SIZE
);
795 /* Create a bfd_in_memory structure. */
796 vars
.bim
= (struct bfd_in_memory
*) ptr
;
797 vars
.bim
->buffer
= ptr
;
798 vars
.bim
->size
= ILF_DATA_SIZE
;
799 ptr
+= sizeof (* vars
.bim
);
801 /* Initialise the pointers to regions of the memory and the
802 other contents of the pe_ILF_vars structure as well. */
803 vars
.sym_cache
= (coff_symbol_type
*) ptr
;
804 vars
.sym_ptr
= (coff_symbol_type
*) ptr
;
806 ptr
+= SIZEOF_ILF_SYMS
;
808 vars
.sym_table
= (unsigned int *) ptr
;
809 vars
.table_ptr
= (unsigned int *) ptr
;
810 ptr
+= SIZEOF_ILF_SYM_TABLE
;
812 vars
.native_syms
= (combined_entry_type
*) ptr
;
813 vars
.native_ptr
= (combined_entry_type
*) ptr
;
814 ptr
+= SIZEOF_ILF_NATIVE_SYMS
;
816 vars
.sym_ptr_table
= (coff_symbol_type
**) ptr
;
817 vars
.sym_ptr_ptr
= (coff_symbol_type
**) ptr
;
818 ptr
+= SIZEOF_ILF_SYM_PTR_TABLE
;
820 vars
.esym_table
= (SYMENT
*) ptr
;
821 vars
.esym_ptr
= (SYMENT
*) ptr
;
822 ptr
+= SIZEOF_ILF_EXT_SYMS
;
824 vars
.reltab
= (arelent
*) ptr
;
826 ptr
+= SIZEOF_ILF_RELOCS
;
828 vars
.int_reltab
= (struct internal_reloc
*) ptr
;
829 ptr
+= SIZEOF_ILF_INT_RELOCS
;
831 vars
.string_table
= (char *) ptr
;
832 vars
.string_ptr
= (char *) ptr
+ STRING_SIZE_SIZE
;
833 ptr
+= SIZEOF_ILF_STRINGS
;
834 vars
.end_string_ptr
= (char *) ptr
;
836 /* The remaining space in bim->buffer is used
837 by the pe_ILF_make_a_section() function. */
843 /* Create the initial .idata$<n> sections:
844 [.idata$2: Import Directory Table -- not needed]
845 .idata$4: Import Lookup Table
846 .idata$5: Import Address Table
848 Note we do not create a .idata$3 section as this is
849 created for us by the linker script. */
850 id4
= pe_ILF_make_a_section (& vars
, ".idata$4", SIZEOF_IDATA4
, 0);
851 id5
= pe_ILF_make_a_section (& vars
, ".idata$5", SIZEOF_IDATA5
, 0);
852 if (id4
== NULL
|| id5
== NULL
)
855 /* Fill in the contents of these sections. */
856 if (import_name_type
== IMPORT_ORDINAL
)
859 /* XXX - treat as IMPORT_NAME ??? */
862 * (unsigned int *) id4
->contents
= ordinal
| 0x80000000;
863 * (unsigned int *) id5
->contents
= ordinal
| 0x80000000;
870 /* Create .idata$6 - the Hint Name Table. */
871 id6
= pe_ILF_make_a_section (& vars
, ".idata$6", SIZEOF_IDATA6
, 0);
875 /* If necessary, trim the import symbol name. */
876 symbol
= symbol_name
;
878 if (import_name_type
!= IMPORT_NAME
)
880 bfd_boolean skipped_leading_underscore
= FALSE
;
881 bfd_boolean skipped_leading_at
= FALSE
;
882 bfd_boolean skipped_leading_question_mark
= FALSE
;
883 bfd_boolean check_again
;
885 /* Skip any prefix in symbol_name. */
895 if (! skipped_leading_at
)
896 check_again
= skipped_leading_at
= TRUE
;
899 if (! skipped_leading_question_mark
)
900 check_again
= skipped_leading_question_mark
= TRUE
;
903 if (! skipped_leading_underscore
)
904 check_again
= skipped_leading_underscore
= TRUE
;
913 len
= strlen (symbol
);
914 if (import_name_type
== IMPORT_NAME_UNDECORATE
)
916 /* Truncate at the first '@'. */
917 char *at
= strchr (symbol
, '@');
923 id6
->contents
[0] = ordinal
& 0xff;
924 id6
->contents
[1] = ordinal
>> 8;
926 memcpy ((char *) id6
->contents
+ 2, symbol
, len
);
927 id6
->contents
[len
+ 2] = '\0';
930 if (import_name_type
!= IMPORT_ORDINAL
)
932 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
933 pe_ILF_save_relocs (&vars
, id4
);
935 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
936 pe_ILF_save_relocs (&vars
, id5
);
939 /* Create extra sections depending upon the type of import we are dealing with. */
945 /* Create a .text section.
946 First we need to look up its contents in the jump table. */
947 for (i
= NUM_ENTRIES (jtab
); i
--;)
949 if (jtab
[i
].size
== 0)
951 if (jtab
[i
].magic
== magic
)
954 /* If we did not find a matching entry something is wrong. */
958 /* Create the .text section. */
959 text
= pe_ILF_make_a_section (& vars
, ".text", jtab
[i
].size
, SEC_CODE
);
963 /* Copy in the jump code. */
964 memcpy (text
->contents
, jtab
[i
].data
, jtab
[i
].size
);
966 /* Create an import symbol. */
967 pe_ILF_make_a_symbol (& vars
, "__imp_", symbol_name
, id5
, 0);
968 imp_sym
= vars
.sym_ptr_ptr
- 1;
969 imp_index
= vars
.sym_index
- 1;
971 /* Create a reloc for the data in the text section. */
972 #ifdef MIPS_ARCH_MAGIC_WINCE
973 if (magic
== MIPS_ARCH_MAGIC_WINCE
)
975 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_HI16_S
,
976 (struct bfd_symbol
**) imp_sym
,
978 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_LO16
, text
);
979 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 4, BFD_RELOC_LO16
,
980 (struct bfd_symbol
**) imp_sym
,
985 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) jtab
[i
].offset
,
986 BFD_RELOC_32
, (asymbol
**) imp_sym
,
989 pe_ILF_save_relocs (& vars
, text
);
996 /* XXX code not yet written. */
1000 /* Initialise the bfd. */
1001 memset (& internal_f
, 0, sizeof (internal_f
));
1003 internal_f
.f_magic
= magic
;
1004 internal_f
.f_symptr
= 0;
1005 internal_f
.f_nsyms
= 0;
1006 internal_f
.f_flags
= F_AR32WR
| F_LNNO
; /* XXX is this correct ? */
1008 if ( ! bfd_set_start_address (abfd
, (bfd_vma
) 0)
1009 || ! bfd_coff_set_arch_mach_hook (abfd
, & internal_f
))
1012 if (bfd_coff_mkobject_hook (abfd
, (PTR
) & internal_f
, NULL
) == NULL
)
1015 coff_data (abfd
)->pe
= 1;
1017 if (vars
.magic
== THUMBPEMAGIC
)
1018 /* Stop some linker warnings about thumb code not supporting interworking. */
1019 coff_data (abfd
)->flags
|= F_INTERWORK
| F_INTERWORK_SET
;
1022 /* Switch from file contents to memory contents. */
1023 bfd_cache_close (abfd
);
1025 abfd
->iostream
= (PTR
) vars
.bim
;
1026 abfd
->flags
|= BFD_IN_MEMORY
/* | HAS_LOCALS */;
1028 obj_sym_filepos (abfd
) = 0;
1030 /* Now create a symbol describing the imported value. */
1031 switch (import_type
)
1034 pe_ILF_make_a_symbol (& vars
, "", symbol_name
, text
,
1035 BSF_NOT_AT_END
| BSF_FUNCTION
);
1037 /* Create an import symbol for the DLL, without the
1039 ptr
= (bfd_byte
*) strrchr (source_dll
, '.');
1042 pe_ILF_make_a_symbol (& vars
, "__IMPORT_DESCRIPTOR_", source_dll
, NULL
, 0);
1048 /* Nothing to do here. */
1052 /* XXX code not yet written. */
1056 /* Point the bfd at the symbol table. */
1057 obj_symbols (abfd
) = vars
.sym_cache
;
1058 bfd_get_symcount (abfd
) = vars
.sym_index
;
1060 obj_raw_syments (abfd
) = vars
.native_syms
;
1061 obj_raw_syment_count (abfd
) = vars
.sym_index
;
1063 obj_coff_external_syms (abfd
) = (PTR
) vars
.esym_table
;
1064 obj_coff_keep_syms (abfd
) = TRUE
;
1066 obj_convert (abfd
) = vars
.sym_table
;
1067 obj_conv_table_size (abfd
) = vars
.sym_index
;
1069 obj_coff_strings (abfd
) = vars
.string_table
;
1070 obj_coff_keep_strings (abfd
) = TRUE
;
1072 abfd
->flags
|= HAS_SYMS
;
1077 /* We have detected a Image Library Format archive element.
1078 Decode the element and return the appropriate target. */
1079 static const bfd_target
*
1080 pe_ILF_object_p (bfd
* abfd
)
1082 bfd_byte buffer
[16];
1086 unsigned int machine
;
1088 unsigned int ordinal
;
1092 /* Upon entry the first four buyes of the ILF header have
1093 already been read. Now read the rest of the header. */
1094 if (bfd_bread (buffer
, (bfd_size_type
) 16, abfd
) != 16)
1099 /* We do not bother to check the version number.
1100 version = H_GET_16 (abfd, ptr); */
1103 machine
= H_GET_16 (abfd
, ptr
);
1106 /* Check that the machine type is recognised. */
1111 case IMAGE_FILE_MACHINE_UNKNOWN
:
1112 case IMAGE_FILE_MACHINE_ALPHA
:
1113 case IMAGE_FILE_MACHINE_ALPHA64
:
1114 case IMAGE_FILE_MACHINE_IA64
:
1117 case IMAGE_FILE_MACHINE_I386
:
1123 case IMAGE_FILE_MACHINE_M68K
:
1129 case IMAGE_FILE_MACHINE_R3000
:
1130 case IMAGE_FILE_MACHINE_R4000
:
1131 case IMAGE_FILE_MACHINE_R10000
:
1133 case IMAGE_FILE_MACHINE_MIPS16
:
1134 case IMAGE_FILE_MACHINE_MIPSFPU
:
1135 case IMAGE_FILE_MACHINE_MIPSFPU16
:
1136 #ifdef MIPS_ARCH_MAGIC_WINCE
1137 magic
= MIPS_ARCH_MAGIC_WINCE
;
1141 case IMAGE_FILE_MACHINE_SH3
:
1142 case IMAGE_FILE_MACHINE_SH4
:
1143 #ifdef SH_ARCH_MAGIC_WINCE
1144 magic
= SH_ARCH_MAGIC_WINCE
;
1148 case IMAGE_FILE_MACHINE_ARM
:
1154 case IMAGE_FILE_MACHINE_THUMB
:
1157 extern const bfd_target TARGET_LITTLE_SYM
;
1159 if (abfd
->xvec
== & TARGET_LITTLE_SYM
)
1160 magic
= THUMBPEMAGIC
;
1165 case IMAGE_FILE_MACHINE_POWERPC
:
1166 /* We no longer support PowerPC. */
1169 (_("%B: Unrecognised machine type (0x%x)"
1170 " in Import Library Format archive"),
1172 bfd_set_error (bfd_error_malformed_archive
);
1181 (_("%B: Recognised but unhandled machine type (0x%x)"
1182 " in Import Library Format archive"),
1184 bfd_set_error (bfd_error_wrong_format
);
1189 /* We do not bother to check the date.
1190 date = H_GET_32 (abfd, ptr); */
1193 size
= H_GET_32 (abfd
, ptr
);
1199 (_("%B: size field is zero in Import Library Format header"), abfd
);
1200 bfd_set_error (bfd_error_malformed_archive
);
1205 ordinal
= H_GET_16 (abfd
, ptr
);
1208 types
= H_GET_16 (abfd
, ptr
);
1211 /* Now read in the two strings that follow. */
1212 ptr
= bfd_alloc (abfd
, size
);
1216 if (bfd_bread (ptr
, size
, abfd
) != size
)
1218 bfd_release (abfd
, ptr
);
1222 symbol_name
= (char *) ptr
;
1223 source_dll
= symbol_name
+ strlen (symbol_name
) + 1;
1225 /* Verify that the strings are null terminated. */
1226 if (ptr
[size
- 1] != 0
1227 || (bfd_size_type
) ((bfd_byte
*) source_dll
- ptr
) >= size
)
1230 (_("%B: string not null terminated in ILF object file."), abfd
);
1231 bfd_set_error (bfd_error_malformed_archive
);
1232 bfd_release (abfd
, ptr
);
1236 /* Now construct the bfd. */
1237 if (! pe_ILF_build_a_bfd (abfd
, magic
, symbol_name
,
1238 source_dll
, ordinal
, types
))
1240 bfd_release (abfd
, ptr
);
1247 static const bfd_target
*
1248 pe_bfd_object_p (bfd
* abfd
)
1251 struct external_PEI_DOS_hdr dos_hdr
;
1252 struct external_PEI_IMAGE_hdr image_hdr
;
1255 /* Detect if this a Microsoft Import Library Format element. */
1256 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1257 || bfd_bread (buffer
, (bfd_size_type
) 4, abfd
) != 4)
1259 if (bfd_get_error () != bfd_error_system_call
)
1260 bfd_set_error (bfd_error_wrong_format
);
1264 if (H_GET_32 (abfd
, buffer
) == 0xffff0000)
1265 return pe_ILF_object_p (abfd
);
1267 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1268 || bfd_bread (&dos_hdr
, (bfd_size_type
) sizeof (dos_hdr
), abfd
)
1269 != sizeof (dos_hdr
))
1271 if (bfd_get_error () != bfd_error_system_call
)
1272 bfd_set_error (bfd_error_wrong_format
);
1276 /* There are really two magic numbers involved; the magic number
1277 that says this is a NT executable (PEI) and the magic number that
1278 determines the architecture. The former is DOSMAGIC, stored in
1279 the e_magic field. The latter is stored in the f_magic field.
1280 If the NT magic number isn't valid, the architecture magic number
1281 could be mimicked by some other field (specifically, the number
1282 of relocs in section 3). Since this routine can only be called
1283 correctly for a PEI file, check the e_magic number here, and, if
1284 it doesn't match, clobber the f_magic number so that we don't get
1286 if (H_GET_16 (abfd
, dos_hdr
.e_magic
) != DOSMAGIC
)
1288 bfd_set_error (bfd_error_wrong_format
);
1292 offset
= H_GET_32 (abfd
, dos_hdr
.e_lfanew
);
1293 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0
1294 || (bfd_bread (&image_hdr
, (bfd_size_type
) sizeof (image_hdr
), abfd
)
1295 != sizeof (image_hdr
)))
1297 if (bfd_get_error () != bfd_error_system_call
)
1298 bfd_set_error (bfd_error_wrong_format
);
1302 if (H_GET_32 (abfd
, image_hdr
.nt_signature
) != 0x4550)
1304 bfd_set_error (bfd_error_wrong_format
);
1308 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1309 pick up the COFF header for PE, see "struct external_PEI_filehdr"
1310 in include/coff/pe.h. We adjust so that that will work. */
1311 if (bfd_seek (abfd
, (file_ptr
) (offset
- sizeof (dos_hdr
)), SEEK_SET
) != 0)
1313 if (bfd_get_error () != bfd_error_system_call
)
1314 bfd_set_error (bfd_error_wrong_format
);
1318 return coff_object_p (abfd
);
1321 #define coff_object_p pe_bfd_object_p
1322 #endif /* COFF_IMAGE_WITH_PE */