1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright (C) 1995-2023 Free Software Foundation, Inc.
3 Written by Cygnus Solutions.
5 This file is part of BFD, the Binary File Descriptor library.
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. */
23 /* Most of this hacked by Steve Chamberlain,
26 PE/PEI rearrangement (and code added): Donn Terry
27 Softway Systems, Inc. */
29 /* Hey look, some documentation [and in a place you expect to find it]!
31 The main reference for the pei format is "Microsoft Portable Executable
32 and Common Object File Format Specification 4.1". Get it if you need to
33 do some serious hacking on this code.
36 "Peering Inside the PE: A Tour of the Win32 Portable Executable
37 File Format", MSJ 1994, Volume 9.
39 The *sole* difference between the pe format and the pei format is that the
40 latter has an MSDOS 2.0 .exe header on the front that prints the message
41 "This app must be run under Windows." (or some such).
42 (FIXME: Whether that statement is *really* true or not is unknown.
43 Are there more subtle differences between pe and pei formats?
44 For now assume there aren't. If you find one, then for God sakes
47 The Microsoft docs use the word "image" instead of "executable" because
48 the former can also refer to a DLL (shared library). Confusion can arise
49 because the `i' in `pei' also refers to "image". The `pe' format can
50 also create images (i.e. executables), it's just that to run on a win32
51 system you need to use the pei format.
53 FIXME: Please add more docs here so the next poor fool that has to hack
54 on this code has a chance of getting something accomplished without
55 wasting too much time. */
59 static bool (*pe_saved_coff_bfd_print_private_bfd_data
) (bfd
*, void *) =
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 bool pe_print_private_bfd_data (bfd
*, void *);
68 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
70 static bool (*pe_saved_coff_bfd_copy_private_bfd_data
) (bfd
*, bfd
*) =
71 #ifndef coff_bfd_copy_private_bfd_data
74 coff_bfd_copy_private_bfd_data
;
75 #undef coff_bfd_copy_private_bfd_data
78 static bool pe_bfd_copy_private_bfd_data (bfd
*, bfd
*);
79 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
81 #define coff_mkobject pe_mkobject
82 #define coff_mkobject_hook pe_mkobject_hook
84 #ifdef COFF_IMAGE_WITH_PE
85 /* This structure contains static variables used by the ILF code. */
86 typedef asection
* asection_ptr
;
92 struct bfd_in_memory
* bim
;
96 unsigned int relcount
;
98 coff_symbol_type
* sym_cache
;
99 coff_symbol_type
* sym_ptr
;
100 unsigned int sym_index
;
102 unsigned int * sym_table
;
103 unsigned int * table_ptr
;
105 combined_entry_type
* native_syms
;
106 combined_entry_type
* native_ptr
;
108 coff_symbol_type
** sym_ptr_table
;
109 coff_symbol_type
** sym_ptr_ptr
;
111 unsigned int sec_index
;
115 char * end_string_ptr
;
120 struct internal_reloc
* int_reltab
;
123 #endif /* COFF_IMAGE_WITH_PE */
125 bfd_cleanup coff_real_object_p
126 (bfd
*, unsigned, struct internal_filehdr
*, struct internal_aouthdr
*);
128 #ifndef NO_COFF_RELOCS
130 coff_swap_reloc_in (bfd
* abfd
, void * src
, void * dst
)
132 RELOC
*reloc_src
= (RELOC
*) src
;
133 struct internal_reloc
*reloc_dst
= (struct internal_reloc
*) dst
;
135 reloc_dst
->r_vaddr
= H_GET_32 (abfd
, reloc_src
->r_vaddr
);
136 reloc_dst
->r_symndx
= H_GET_S32 (abfd
, reloc_src
->r_symndx
);
137 reloc_dst
->r_type
= H_GET_16 (abfd
, reloc_src
->r_type
);
138 #ifdef SWAP_IN_RELOC_OFFSET
139 reloc_dst
->r_offset
= SWAP_IN_RELOC_OFFSET (abfd
, reloc_src
->r_offset
);
144 coff_swap_reloc_out (bfd
* abfd
, void * src
, void * dst
)
146 struct internal_reloc
*reloc_src
= (struct internal_reloc
*) src
;
147 struct external_reloc
*reloc_dst
= (struct external_reloc
*) dst
;
149 H_PUT_32 (abfd
, reloc_src
->r_vaddr
, reloc_dst
->r_vaddr
);
150 H_PUT_32 (abfd
, reloc_src
->r_symndx
, reloc_dst
->r_symndx
);
151 H_PUT_16 (abfd
, reloc_src
->r_type
, reloc_dst
->r_type
);
153 #ifdef SWAP_OUT_RELOC_OFFSET
154 SWAP_OUT_RELOC_OFFSET (abfd
, reloc_src
->r_offset
, reloc_dst
->r_offset
);
156 #ifdef SWAP_OUT_RELOC_EXTRA
157 SWAP_OUT_RELOC_EXTRA (abfd
, reloc_src
, reloc_dst
);
161 #endif /* not NO_COFF_RELOCS */
163 #ifdef COFF_IMAGE_WITH_PE
165 #define FILHDR struct external_PEI_IMAGE_hdr
169 coff_swap_filehdr_in (bfd
* abfd
, void * src
, void * dst
)
171 FILHDR
*filehdr_src
= (FILHDR
*) src
;
172 struct internal_filehdr
*filehdr_dst
= (struct internal_filehdr
*) dst
;
174 filehdr_dst
->f_magic
= H_GET_16 (abfd
, filehdr_src
->f_magic
);
175 filehdr_dst
->f_nscns
= H_GET_16 (abfd
, filehdr_src
->f_nscns
);
176 filehdr_dst
->f_timdat
= H_GET_32 (abfd
, filehdr_src
->f_timdat
);
177 filehdr_dst
->f_nsyms
= H_GET_32 (abfd
, filehdr_src
->f_nsyms
);
178 filehdr_dst
->f_flags
= H_GET_16 (abfd
, filehdr_src
->f_flags
);
179 filehdr_dst
->f_symptr
= H_GET_32 (abfd
, filehdr_src
->f_symptr
);
181 /* Other people's tools sometimes generate headers with an nsyms but
183 if (filehdr_dst
->f_nsyms
!= 0 && filehdr_dst
->f_symptr
== 0)
185 filehdr_dst
->f_nsyms
= 0;
186 filehdr_dst
->f_flags
|= F_LSYMS
;
189 filehdr_dst
->f_opthdr
= H_GET_16 (abfd
, filehdr_src
-> f_opthdr
);
192 #ifdef COFF_IMAGE_WITH_PE
193 # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
194 #elif defined COFF_WITH_peAArch64
195 # define coff_swap_filehdr_out _bfd_XX_only_swap_filehdr_out
196 #elif defined COFF_WITH_pex64
197 # define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out
198 #elif defined COFF_WITH_pep
199 # define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out
201 # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
205 coff_swap_scnhdr_in (bfd
* abfd
, void * ext
, void * in
)
207 SCNHDR
*scnhdr_ext
= (SCNHDR
*) ext
;
208 struct internal_scnhdr
*scnhdr_int
= (struct internal_scnhdr
*) in
;
210 memcpy (scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof (scnhdr_int
->s_name
));
212 scnhdr_int
->s_vaddr
= GET_SCNHDR_VADDR (abfd
, scnhdr_ext
->s_vaddr
);
213 scnhdr_int
->s_paddr
= GET_SCNHDR_PADDR (abfd
, scnhdr_ext
->s_paddr
);
214 scnhdr_int
->s_size
= GET_SCNHDR_SIZE (abfd
, scnhdr_ext
->s_size
);
215 scnhdr_int
->s_scnptr
= GET_SCNHDR_SCNPTR (abfd
, scnhdr_ext
->s_scnptr
);
216 scnhdr_int
->s_relptr
= GET_SCNHDR_RELPTR (abfd
, scnhdr_ext
->s_relptr
);
217 scnhdr_int
->s_lnnoptr
= GET_SCNHDR_LNNOPTR (abfd
, scnhdr_ext
->s_lnnoptr
);
218 scnhdr_int
->s_flags
= H_GET_32 (abfd
, scnhdr_ext
->s_flags
);
220 /* MS handles overflow of line numbers by carrying into the reloc
221 field (it appears). Since it's supposed to be zero for PE
222 *IMAGE* format, that's safe. This is still a bit iffy. */
223 #ifdef COFF_IMAGE_WITH_PE
224 scnhdr_int
->s_nlnno
= (H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
)
225 + (H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
) << 16));
226 scnhdr_int
->s_nreloc
= 0;
228 scnhdr_int
->s_nreloc
= H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
);
229 scnhdr_int
->s_nlnno
= H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
);
232 if (scnhdr_int
->s_vaddr
!= 0)
234 scnhdr_int
->s_vaddr
+= pe_data (abfd
)->pe_opthdr
.ImageBase
;
235 /* Do not cut upper 32-bits for 64-bit vma. */
236 #if !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
237 scnhdr_int
->s_vaddr
&= 0xffffffff;
241 #ifndef COFF_NO_HACK_SCNHDR_SIZE
242 /* If this section holds uninitialized data and is from an object file
243 or from an executable image that has not initialized the field,
244 or if the image is an executable file and the physical size is padded,
245 use the virtual size (stored in s_paddr) instead. */
246 if (scnhdr_int
->s_paddr
> 0
247 && (((scnhdr_int
->s_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) != 0
248 && (! bfd_pei_p (abfd
) || scnhdr_int
->s_size
== 0))
249 || (bfd_pei_p (abfd
) && (scnhdr_int
->s_size
> scnhdr_int
->s_paddr
))))
250 /* This code used to set scnhdr_int->s_paddr to 0. However,
251 coff_set_alignment_hook stores s_paddr in virt_size, which
252 only works if it correctly holds the virtual size of the
254 scnhdr_int
->s_size
= scnhdr_int
->s_paddr
;
259 pe_mkobject (bfd
* abfd
)
262 size_t amt
= sizeof (pe_data_type
);
264 abfd
->tdata
.pe_obj_data
= (struct pe_tdata
*) bfd_zalloc (abfd
, amt
);
266 if (abfd
->tdata
.pe_obj_data
== 0)
273 /* in_reloc_p is architecture dependent. */
274 pe
->in_reloc_p
= in_reloc_p
;
276 /* Default DOS message string. */
277 pe
->dos_message
[0] = 0x0eba1f0e;
278 pe
->dos_message
[1] = 0xcd09b400;
279 pe
->dos_message
[2] = 0x4c01b821;
280 pe
->dos_message
[3] = 0x685421cd;
281 pe
->dos_message
[4] = 0x70207369;
282 pe
->dos_message
[5] = 0x72676f72;
283 pe
->dos_message
[6] = 0x63206d61;
284 pe
->dos_message
[7] = 0x6f6e6e61;
285 pe
->dos_message
[8] = 0x65622074;
286 pe
->dos_message
[9] = 0x6e757220;
287 pe
->dos_message
[10] = 0x206e6920;
288 pe
->dos_message
[11] = 0x20534f44;
289 pe
->dos_message
[12] = 0x65646f6d;
290 pe
->dos_message
[13] = 0x0a0d0d2e;
291 pe
->dos_message
[14] = 0x24;
292 pe
->dos_message
[15] = 0x0;
294 memset (& pe
->pe_opthdr
, 0, sizeof pe
->pe_opthdr
);
296 bfd_coff_long_section_names (abfd
)
297 = coff_backend_info (abfd
)->_bfd_coff_long_section_names
;
302 /* Create the COFF backend specific information. */
305 pe_mkobject_hook (bfd
* abfd
,
307 void * aouthdr ATTRIBUTE_UNUSED
)
309 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
312 if (! pe_mkobject (abfd
))
316 pe
->coff
.sym_filepos
= internal_f
->f_symptr
;
317 /* These members communicate important constants about the symbol
318 table to GDB's symbol-reading code. These `constants'
319 unfortunately vary among coff implementations... */
320 pe
->coff
.local_n_btmask
= N_BTMASK
;
321 pe
->coff
.local_n_btshft
= N_BTSHFT
;
322 pe
->coff
.local_n_tmask
= N_TMASK
;
323 pe
->coff
.local_n_tshift
= N_TSHIFT
;
324 pe
->coff
.local_symesz
= SYMESZ
;
325 pe
->coff
.local_auxesz
= AUXESZ
;
326 pe
->coff
.local_linesz
= LINESZ
;
328 pe
->coff
.timestamp
= internal_f
->f_timdat
;
330 obj_raw_syment_count (abfd
) =
331 obj_conv_table_size (abfd
) =
334 pe
->real_flags
= internal_f
->f_flags
;
336 if ((internal_f
->f_flags
& F_DLL
) != 0)
339 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
340 abfd
->flags
|= HAS_DEBUG
;
342 #ifdef COFF_IMAGE_WITH_PE
344 pe
->pe_opthdr
= ((struct internal_aouthdr
*) aouthdr
)->pe
;
348 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
349 coff_data (abfd
) ->flags
= 0;
352 memcpy (pe
->dos_message
, internal_f
->pe
.dos_message
,
353 sizeof (pe
->dos_message
));
359 pe_print_private_bfd_data (bfd
*abfd
, void * vfile
)
361 FILE *file
= (FILE *) vfile
;
363 if (!_bfd_XX_print_private_bfd_data_common (abfd
, vfile
))
366 if (pe_saved_coff_bfd_print_private_bfd_data
== NULL
)
371 return pe_saved_coff_bfd_print_private_bfd_data (abfd
, vfile
);
374 /* Copy any private info we understand from the input bfd
375 to the output bfd. */
378 pe_bfd_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
380 /* PR binutils/716: Copy the large address aware flag.
381 XXX: Should we be copying other flags or other fields in the pe_data()
383 if (pe_data (obfd
) != NULL
384 && pe_data (ibfd
) != NULL
385 && pe_data (ibfd
)->real_flags
& IMAGE_FILE_LARGE_ADDRESS_AWARE
)
386 pe_data (obfd
)->real_flags
|= IMAGE_FILE_LARGE_ADDRESS_AWARE
;
388 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd
, obfd
))
391 if (pe_saved_coff_bfd_copy_private_bfd_data
)
392 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd
, obfd
);
397 #define coff_bfd_copy_private_section_data \
398 _bfd_XX_bfd_copy_private_section_data
400 #define coff_get_symbol_info _bfd_XX_get_symbol_info
402 #ifdef COFF_IMAGE_WITH_PE
404 /* Code to handle Microsoft's Import Library Format.
405 Also known as LINK6 format.
406 Documentation about this format can be found at:
408 https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#import-library-format */
410 /* The following constants specify the sizes of the various data
411 structures that we have to create in order to build a bfd describing
412 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
413 and SIZEOF_IDATA7 below is to allow for the possibility that we might
414 need a padding byte in order to ensure 16 bit alignment for the section's
417 The value for SIZEOF_ILF_STRINGS is computed as follows:
419 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
420 per symbol for their names (longest section name is .idata$x).
422 There will be two symbols for the imported value, one the symbol name
423 and one with _imp__ prefixed. Allowing for the terminating nul's this
424 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
426 The strings in the string table must start STRING__SIZE_SIZE bytes into
427 the table in order to for the string lookup code in coffgen/coffcode to
429 #define NUM_ILF_RELOCS 8
430 #define NUM_ILF_SECTIONS 6
431 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
433 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
434 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
435 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
436 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
437 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
438 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
439 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
440 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
441 + 21 + strlen (source_dll) \
442 + NUM_ILF_SECTIONS * 9 \
444 #define SIZEOF_IDATA2 (5 * 4)
446 /* For PEx64 idata4 & 5 have thumb size of 8 bytes. */
447 #if defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64)
448 #define SIZEOF_IDATA4 (2 * 4)
449 #define SIZEOF_IDATA5 (2 * 4)
451 #define SIZEOF_IDATA4 (1 * 4)
452 #define SIZEOF_IDATA5 (1 * 4)
455 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
456 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
457 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
459 #define ILF_DATA_SIZE \
461 + SIZEOF_ILF_SYM_TABLE \
462 + SIZEOF_ILF_NATIVE_SYMS \
463 + SIZEOF_ILF_SYM_PTR_TABLE \
464 + SIZEOF_ILF_EXT_SYMS \
465 + SIZEOF_ILF_RELOCS \
466 + SIZEOF_ILF_INT_RELOCS \
467 + SIZEOF_ILF_STRINGS \
473 + SIZEOF_ILF_SECTIONS \
474 + MAX_TEXT_SECTION_SIZE
476 /* Create an empty relocation against the given symbol. */
479 pe_ILF_make_a_symbol_reloc (pe_ILF_vars
* vars
,
481 bfd_reloc_code_real_type reloc
,
482 struct bfd_symbol
** sym
,
483 unsigned int sym_index
)
486 struct internal_reloc
* internal
;
488 entry
= vars
->reltab
+ vars
->relcount
;
489 internal
= vars
->int_reltab
+ vars
->relcount
;
491 entry
->address
= address
;
493 entry
->howto
= bfd_reloc_type_lookup (vars
->abfd
, reloc
);
494 entry
->sym_ptr_ptr
= sym
;
496 internal
->r_vaddr
= address
;
497 internal
->r_symndx
= sym_index
;
498 internal
->r_type
= entry
->howto
? entry
->howto
->type
: 0;
502 BFD_ASSERT (vars
->relcount
<= NUM_ILF_RELOCS
);
505 /* Create an empty relocation against the given section. */
508 pe_ILF_make_a_reloc (pe_ILF_vars
* vars
,
510 bfd_reloc_code_real_type reloc
,
513 pe_ILF_make_a_symbol_reloc (vars
, address
, reloc
, sec
->symbol_ptr_ptr
,
514 coff_section_data (vars
->abfd
, sec
)->i
);
517 /* Move the queued relocs into the given section. */
520 pe_ILF_save_relocs (pe_ILF_vars
* vars
,
523 /* Make sure that there is somewhere to store the internal relocs. */
524 if (coff_section_data (vars
->abfd
, sec
) == NULL
)
525 /* We should probably return an error indication here. */
528 coff_section_data (vars
->abfd
, sec
)->relocs
= vars
->int_reltab
;
530 sec
->relocation
= vars
->reltab
;
531 sec
->reloc_count
= vars
->relcount
;
532 sec
->flags
|= SEC_RELOC
;
534 vars
->reltab
+= vars
->relcount
;
535 vars
->int_reltab
+= vars
->relcount
;
538 BFD_ASSERT ((bfd_byte
*) vars
->int_reltab
< (bfd_byte
*) vars
->string_table
);
541 /* Create a global symbol and add it to the relevant tables. */
544 pe_ILF_make_a_symbol (pe_ILF_vars
* vars
,
546 const char * symbol_name
,
547 asection_ptr section
,
548 flagword extra_flags
)
550 coff_symbol_type
* sym
;
551 combined_entry_type
* ent
;
553 unsigned short sclass
;
555 if (extra_flags
& BSF_LOCAL
)
561 if (vars
->magic
== THUMBPEMAGIC
)
563 if (extra_flags
& BSF_FUNCTION
)
564 sclass
= C_THUMBEXTFUNC
;
565 else if (extra_flags
& BSF_LOCAL
)
566 sclass
= C_THUMBSTAT
;
572 BFD_ASSERT (vars
->sym_index
< NUM_ILF_SYMS
);
575 ent
= vars
->native_ptr
;
576 esym
= vars
->esym_ptr
;
578 /* Copy the symbol's name into the string table. */
579 int len
= sprintf (vars
->string_ptr
, "%s%s", prefix
, symbol_name
);
582 section
= bfd_und_section_ptr
;
584 /* Initialise the external symbol. */
585 H_PUT_32 (vars
->abfd
, vars
->string_ptr
- vars
->string_table
,
587 H_PUT_16 (vars
->abfd
, section
->target_index
, esym
->e_scnum
);
588 esym
->e_sclass
[0] = sclass
;
590 /* The following initialisations are unnecessary - the memory is
591 zero initialised. They are just kept here as reminders. */
593 /* Initialise the internal symbol structure. */
594 ent
->u
.syment
.n_sclass
= sclass
;
595 ent
->u
.syment
.n_scnum
= section
->target_index
;
596 ent
->u
.syment
._n
._n_n
._n_offset
= (uintptr_t) sym
;
599 sym
->symbol
.the_bfd
= vars
->abfd
;
600 sym
->symbol
.name
= vars
->string_ptr
;
601 sym
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| extra_flags
;
602 sym
->symbol
.section
= section
;
605 * vars
->table_ptr
= vars
->sym_index
;
606 * vars
->sym_ptr_ptr
= sym
;
608 /* Adjust pointers for the next symbol. */
611 vars
->sym_ptr_ptr
++;
615 vars
->string_ptr
+= len
+ 1;
617 BFD_ASSERT (vars
->string_ptr
< vars
->end_string_ptr
);
620 /* Create a section. */
623 pe_ILF_make_a_section (pe_ILF_vars
* vars
,
626 flagword extra_flags
)
632 sec
= bfd_make_section_old_way (vars
->abfd
, name
);
636 flags
= SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
| SEC_IN_MEMORY
;
638 bfd_set_section_flags (sec
, flags
| extra_flags
);
640 bfd_set_section_alignment (sec
, 2);
642 /* Check that we will not run out of space. */
643 BFD_ASSERT (vars
->data
+ size
< vars
->bim
->buffer
+ vars
->bim
->size
);
645 /* Set the section size and contents. The actual
646 contents are filled in by our parent. */
647 bfd_set_section_size (sec
, (bfd_size_type
) size
);
648 sec
->contents
= vars
->data
;
649 sec
->target_index
= vars
->sec_index
++;
651 /* Advance data pointer in the vars structure. */
654 /* Skip the padding byte if it was not needed.
655 The logic here is that if the string length is odd,
656 then the entire string length, including the null byte,
657 is even and so the extra, padding byte, is not needed. */
661 /* PR 18758: See note in pe_ILF_buid_a_bfd. We must make sure that we
662 preserve host alignment requirements. The BFD_ASSERTs in this
663 functions will warn us if we run out of room, but we should
664 already have enough padding built in to ILF_DATA_SIZE. */
665 #if GCC_VERSION >= 3000
666 alignment
= __alignof__ (struct coff_section_tdata
);
671 = (bfd_byte
*) (((intptr_t) vars
->data
+ alignment
- 1) & -alignment
);
673 /* Create a coff_section_tdata structure for our use. */
674 sec
->used_by_bfd
= (struct coff_section_tdata
*) vars
->data
;
675 vars
->data
+= sizeof (struct coff_section_tdata
);
677 BFD_ASSERT (vars
->data
<= vars
->bim
->buffer
+ vars
->bim
->size
);
679 /* Create a symbol to refer to this section. */
680 pe_ILF_make_a_symbol (vars
, "", name
, sec
, BSF_LOCAL
);
682 /* Cache the index to the symbol in the coff_section_data structure. */
683 coff_section_data (vars
->abfd
, sec
)->i
= vars
->sym_index
- 1;
688 /* This structure contains the code that goes into the .text section
689 in order to perform a jump into the DLL lookup table. The entries
690 in the table are index by the magic number used to represent the
691 machine type in the PE file. The contents of the data[] arrays in
692 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
693 The SIZE field says how many bytes in the DATA array are actually
694 used. The OFFSET field says where in the data array the address
695 of the .idata$5 section should be placed. */
696 #define MAX_TEXT_SECTION_SIZE 32
700 unsigned short magic
;
701 unsigned char data
[MAX_TEXT_SECTION_SIZE
];
707 static const jump_table jtab
[] =
711 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
718 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
725 { /* XXX fill me in */ },
730 #ifdef MIPS_ARCH_MAGIC_WINCE
731 { MIPS_ARCH_MAGIC_WINCE
,
732 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
733 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
738 #ifdef SH_ARCH_MAGIC_WINCE
739 { SH_ARCH_MAGIC_WINCE
,
740 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
741 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
747 /* We don't currently support jumping to DLLs, so if
748 someone does try emit a runtime trap. Through UDF #0. */
750 { 0x00, 0x00, 0x00, 0x00 },
758 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
759 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
766 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
767 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
772 #ifdef LOONGARCH64MAGIC
773 /* We don't currently support jumping to DLLs, so if
774 someone does try emit a runtime trap. Through BREAK 0. */
776 { 0x00, 0x00, 0x2a, 0x00 },
786 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
789 /* Build a full BFD from the information supplied in a ILF object. */
792 pe_ILF_build_a_bfd (bfd
* abfd
,
796 unsigned int ordinal
,
801 struct internal_filehdr internal_f
;
802 unsigned int import_type
;
803 unsigned int import_name_type
;
804 asection_ptr id4
, id5
, id6
= NULL
, text
= NULL
;
805 coff_symbol_type
** imp_sym
;
806 unsigned int imp_index
;
809 /* Decode and verify the types field of the ILF structure. */
810 import_type
= types
& 0x3;
811 import_name_type
= (types
& 0x1c) >> 2;
820 /* XXX code yet to be written. */
821 /* xgettext:c-format */
822 _bfd_error_handler (_("%pB: unhandled import type; %x"),
827 /* xgettext:c-format */
828 _bfd_error_handler (_("%pB: unrecognized import type; %x"),
833 switch (import_name_type
)
837 case IMPORT_NAME_NOPREFIX
:
838 case IMPORT_NAME_UNDECORATE
:
842 /* xgettext:c-format */
843 _bfd_error_handler (_("%pB: unrecognized import name type; %x"),
844 abfd
, import_name_type
);
848 /* Initialise local variables.
850 Note these are kept in a structure rather than being
851 declared as statics since bfd frowns on global variables.
853 We are going to construct the contents of the BFD in memory,
854 so allocate all the space that we will need right now. */
856 = (struct bfd_in_memory
*) bfd_malloc ((bfd_size_type
) sizeof (*vars
.bim
));
857 if (vars
.bim
== NULL
)
860 ptr
= (bfd_byte
*) bfd_zmalloc ((bfd_size_type
) ILF_DATA_SIZE
);
861 vars
.bim
->buffer
= ptr
;
862 vars
.bim
->size
= ILF_DATA_SIZE
;
866 /* Initialise the pointers to regions of the memory and the
867 other contents of the pe_ILF_vars structure as well. */
868 vars
.sym_cache
= (coff_symbol_type
*) ptr
;
869 vars
.sym_ptr
= (coff_symbol_type
*) ptr
;
871 ptr
+= SIZEOF_ILF_SYMS
;
873 vars
.sym_table
= (unsigned int *) ptr
;
874 vars
.table_ptr
= (unsigned int *) ptr
;
875 ptr
+= SIZEOF_ILF_SYM_TABLE
;
877 vars
.native_syms
= (combined_entry_type
*) ptr
;
878 vars
.native_ptr
= (combined_entry_type
*) ptr
;
879 ptr
+= SIZEOF_ILF_NATIVE_SYMS
;
881 vars
.sym_ptr_table
= (coff_symbol_type
**) ptr
;
882 vars
.sym_ptr_ptr
= (coff_symbol_type
**) ptr
;
883 ptr
+= SIZEOF_ILF_SYM_PTR_TABLE
;
885 vars
.esym_table
= (SYMENT
*) ptr
;
886 vars
.esym_ptr
= (SYMENT
*) ptr
;
887 ptr
+= SIZEOF_ILF_EXT_SYMS
;
889 vars
.reltab
= (arelent
*) ptr
;
891 ptr
+= SIZEOF_ILF_RELOCS
;
893 vars
.int_reltab
= (struct internal_reloc
*) ptr
;
894 ptr
+= SIZEOF_ILF_INT_RELOCS
;
896 vars
.string_table
= (char *) ptr
;
897 vars
.string_ptr
= (char *) ptr
+ STRING_SIZE_SIZE
;
898 ptr
+= SIZEOF_ILF_STRINGS
;
899 vars
.end_string_ptr
= (char *) ptr
;
901 /* The remaining space in bim->buffer is used
902 by the pe_ILF_make_a_section() function. */
904 /* PR 18758: Make sure that the data area is sufficiently aligned for
905 struct coff_section_tdata. __alignof__ is a gcc extension, hence
906 the test of GCC_VERSION. For other compilers we assume 8 byte
908 #if GCC_VERSION >= 3000
909 alignment
= __alignof__ (struct coff_section_tdata
);
913 ptr
= (bfd_byte
*) (((intptr_t) ptr
+ alignment
- 1) & -alignment
);
920 /* Create the initial .idata$<n> sections:
921 [.idata$2: Import Directory Table -- not needed]
922 .idata$4: Import Lookup Table
923 .idata$5: Import Address Table
925 Note we do not create a .idata$3 section as this is
926 created for us by the linker script. */
927 id4
= pe_ILF_make_a_section (& vars
, ".idata$4", SIZEOF_IDATA4
, 0);
928 id5
= pe_ILF_make_a_section (& vars
, ".idata$5", SIZEOF_IDATA5
, 0);
929 if (id4
== NULL
|| id5
== NULL
)
932 /* Fill in the contents of these sections. */
933 if (import_name_type
== IMPORT_ORDINAL
)
936 /* See PR 20907 for a reproducer. */
939 #if defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64)
940 ((unsigned int *) id4
->contents
)[0] = ordinal
;
941 ((unsigned int *) id4
->contents
)[1] = 0x80000000;
942 ((unsigned int *) id5
->contents
)[0] = ordinal
;
943 ((unsigned int *) id5
->contents
)[1] = 0x80000000;
945 * (unsigned int *) id4
->contents
= ordinal
| 0x80000000;
946 * (unsigned int *) id5
->contents
= ordinal
| 0x80000000;
954 /* Create .idata$6 - the Hint Name Table. */
955 id6
= pe_ILF_make_a_section (& vars
, ".idata$6", SIZEOF_IDATA6
, 0);
959 /* If necessary, trim the import symbol name. */
960 symbol
= symbol_name
;
962 /* As used by MS compiler, '_', '@', and '?' are alternative
963 forms of USER_LABEL_PREFIX, with '?' for c++ mangled names,
964 '@' used for fastcall (in C), '_' everywhere else. Only one
965 of these is used for a symbol. We strip this leading char for
966 IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the
967 PE COFF 6.0 spec (section 8.3, Import Name Type). */
969 if (import_name_type
!= IMPORT_NAME
)
973 /* Check that we don't remove for targets with empty
974 USER_LABEL_PREFIX the leading underscore. */
975 if ((c
== '_' && abfd
->xvec
->symbol_leading_char
!= 0)
976 || c
== '@' || c
== '?')
980 len
= strlen (symbol
);
981 if (import_name_type
== IMPORT_NAME_UNDECORATE
)
983 /* Truncate at the first '@'. */
984 char *at
= strchr (symbol
, '@');
990 id6
->contents
[0] = ordinal
& 0xff;
991 id6
->contents
[1] = ordinal
>> 8;
993 memcpy ((char *) id6
->contents
+ 2, symbol
, len
);
994 id6
->contents
[len
+ 2] = '\0';
997 if (import_name_type
!= IMPORT_ORDINAL
)
999 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
1000 pe_ILF_save_relocs (&vars
, id4
);
1002 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
1003 pe_ILF_save_relocs (&vars
, id5
);
1006 /* Create an import symbol. */
1007 pe_ILF_make_a_symbol (& vars
, "__imp_", symbol_name
, id5
, 0);
1008 imp_sym
= vars
.sym_ptr_ptr
- 1;
1009 imp_index
= vars
.sym_index
- 1;
1011 /* Create extra sections depending upon the type of import we are dealing with. */
1012 switch (import_type
)
1017 /* CODE functions are special, in that they get a trampoline that
1018 jumps to the main import symbol. Create a .text section to hold it.
1019 First we need to look up its contents in the jump table. */
1020 for (i
= NUM_ENTRIES (jtab
); i
--;)
1022 if (jtab
[i
].size
== 0)
1024 if (jtab
[i
].magic
== magic
)
1027 /* If we did not find a matching entry something is wrong. */
1031 /* Create the .text section. */
1032 text
= pe_ILF_make_a_section (& vars
, ".text", jtab
[i
].size
, SEC_CODE
);
1036 /* Copy in the jump code. */
1037 memcpy (text
->contents
, jtab
[i
].data
, jtab
[i
].size
);
1039 /* Create a reloc for the data in the text section. */
1040 #ifdef MIPS_ARCH_MAGIC_WINCE
1041 if (magic
== MIPS_ARCH_MAGIC_WINCE
)
1043 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_HI16_S
,
1044 (struct bfd_symbol
**) imp_sym
,
1046 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_LO16
, text
);
1047 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 4, BFD_RELOC_LO16
,
1048 (struct bfd_symbol
**) imp_sym
,
1054 if (magic
== AMD64MAGIC
)
1056 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) jtab
[i
].offset
,
1057 BFD_RELOC_32_PCREL
, (asymbol
**) imp_sym
,
1062 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) jtab
[i
].offset
,
1063 BFD_RELOC_32
, (asymbol
**) imp_sym
,
1066 pe_ILF_save_relocs (& vars
, text
);
1073 /* XXX code not yet written. */
1077 /* Now create a symbol describing the imported value. */
1078 switch (import_type
)
1081 pe_ILF_make_a_symbol (& vars
, "", symbol_name
, text
,
1082 BSF_NOT_AT_END
| BSF_FUNCTION
);
1087 /* Nothing to do here. */
1091 /* XXX code not yet written. */
1095 /* Create an import symbol for the DLL, without the .dll suffix. */
1096 ptr
= (bfd_byte
*) strrchr (source_dll
, '.');
1099 pe_ILF_make_a_symbol (& vars
, "__IMPORT_DESCRIPTOR_", source_dll
, NULL
, 0);
1103 /* Initialise the bfd. */
1104 memset (& internal_f
, 0, sizeof (internal_f
));
1106 internal_f
.f_magic
= magic
;
1107 internal_f
.f_symptr
= 0;
1108 internal_f
.f_nsyms
= 0;
1109 internal_f
.f_flags
= F_AR32WR
| F_LNNO
; /* XXX is this correct ? */
1111 if ( ! bfd_set_start_address (abfd
, (bfd_vma
) 0)
1112 || ! bfd_coff_set_arch_mach_hook (abfd
, & internal_f
))
1115 if (bfd_coff_mkobject_hook (abfd
, (void *) & internal_f
, NULL
) == NULL
)
1118 obj_pe (abfd
) = true;
1120 if (vars
.magic
== THUMBPEMAGIC
)
1121 /* Stop some linker warnings about thumb code not supporting interworking. */
1122 coff_data (abfd
)->flags
|= F_INTERWORK
| F_INTERWORK_SET
;
1125 /* Switch from file contents to memory contents. */
1126 bfd_cache_close (abfd
);
1128 abfd
->iostream
= (void *) vars
.bim
;
1129 abfd
->flags
|= BFD_IN_MEMORY
| HAS_SYMS
;
1130 abfd
->iovec
= &_bfd_memory_iovec
;
1134 obj_sym_filepos (abfd
) = 0;
1136 /* Point the bfd at the symbol table. */
1137 obj_symbols (abfd
) = vars
.sym_cache
;
1138 abfd
->symcount
= vars
.sym_index
;
1140 obj_raw_syments (abfd
) = vars
.native_syms
;
1141 obj_raw_syment_count (abfd
) = vars
.sym_index
;
1143 obj_coff_external_syms (abfd
) = (void *) vars
.esym_table
;
1144 obj_coff_keep_syms (abfd
) = true;
1146 obj_convert (abfd
) = vars
.sym_table
;
1147 obj_conv_table_size (abfd
) = vars
.sym_index
;
1149 obj_coff_strings (abfd
) = vars
.string_table
;
1150 obj_coff_strings_len (abfd
) = vars
.string_ptr
- vars
.string_table
;
1151 obj_coff_keep_strings (abfd
) = true;
1156 free (vars
.bim
->buffer
);
1161 /* Cleanup function, returned from check_format hook. */
1164 pe_ILF_cleanup (bfd
*abfd
)
1166 struct bfd_in_memory
*bim
= abfd
->iostream
;
1169 abfd
->iostream
= NULL
;
1172 /* We have detected an Import Library Format archive element.
1173 Decode the element and return the appropriate target. */
1176 pe_ILF_object_p (bfd
* abfd
)
1178 bfd_byte buffer
[14];
1182 unsigned int machine
;
1184 unsigned int ordinal
;
1188 /* Upon entry the first six bytes of the ILF header have
1189 already been read. Now read the rest of the header. */
1190 if (bfd_bread (buffer
, (bfd_size_type
) 14, abfd
) != 14)
1195 machine
= H_GET_16 (abfd
, ptr
);
1198 /* Check that the machine type is recognised. */
1203 case IMAGE_FILE_MACHINE_UNKNOWN
:
1204 case IMAGE_FILE_MACHINE_ALPHA
:
1205 case IMAGE_FILE_MACHINE_ALPHA64
:
1206 case IMAGE_FILE_MACHINE_IA64
:
1209 case IMAGE_FILE_MACHINE_I386
:
1215 case IMAGE_FILE_MACHINE_AMD64
:
1221 case IMAGE_FILE_MACHINE_R3000
:
1222 case IMAGE_FILE_MACHINE_R4000
:
1223 case IMAGE_FILE_MACHINE_R10000
:
1225 case IMAGE_FILE_MACHINE_MIPS16
:
1226 case IMAGE_FILE_MACHINE_MIPSFPU
:
1227 case IMAGE_FILE_MACHINE_MIPSFPU16
:
1228 #ifdef MIPS_ARCH_MAGIC_WINCE
1229 magic
= MIPS_ARCH_MAGIC_WINCE
;
1233 case IMAGE_FILE_MACHINE_SH3
:
1234 case IMAGE_FILE_MACHINE_SH4
:
1235 #ifdef SH_ARCH_MAGIC_WINCE
1236 magic
= SH_ARCH_MAGIC_WINCE
;
1240 case IMAGE_FILE_MACHINE_ARM
:
1246 case IMAGE_FILE_MACHINE_ARM64
:
1248 magic
= AARCH64MAGIC
;
1252 case IMAGE_FILE_MACHINE_LOONGARCH64
:
1253 #ifdef LOONGARCH64MAGIC
1254 magic
= LOONGARCH64MAGIC
;
1258 case IMAGE_FILE_MACHINE_THUMB
:
1261 extern const bfd_target TARGET_LITTLE_SYM
;
1263 if (abfd
->xvec
== & TARGET_LITTLE_SYM
)
1264 magic
= THUMBPEMAGIC
;
1269 case IMAGE_FILE_MACHINE_POWERPC
:
1270 /* We no longer support PowerPC. */
1273 /* xgettext:c-format */
1274 (_("%pB: unrecognised machine type (0x%x)"
1275 " in Import Library Format archive"),
1277 bfd_set_error (bfd_error_malformed_archive
);
1286 /* xgettext:c-format */
1287 (_("%pB: recognised but unhandled machine type (0x%x)"
1288 " in Import Library Format archive"),
1290 bfd_set_error (bfd_error_wrong_format
);
1295 /* We do not bother to check the date.
1296 date = H_GET_32 (abfd, ptr); */
1299 size
= H_GET_32 (abfd
, ptr
);
1305 (_("%pB: size field is zero in Import Library Format header"), abfd
);
1306 bfd_set_error (bfd_error_malformed_archive
);
1311 ordinal
= H_GET_16 (abfd
, ptr
);
1314 types
= H_GET_16 (abfd
, ptr
);
1317 /* Now read in the two strings that follow. */
1318 ptr
= (bfd_byte
*) _bfd_alloc_and_read (abfd
, size
, size
);
1322 symbol_name
= (char *) ptr
;
1323 /* See PR 20905 for an example of where the strnlen is necessary. */
1324 source_dll
= symbol_name
+ strnlen (symbol_name
, size
- 1) + 1;
1326 /* Verify that the strings are null terminated. */
1327 if (ptr
[size
- 1] != 0
1328 || (bfd_size_type
) ((bfd_byte
*) source_dll
- ptr
) >= size
)
1331 (_("%pB: string not null terminated in ILF object file"), abfd
);
1332 bfd_set_error (bfd_error_malformed_archive
);
1333 bfd_release (abfd
, ptr
);
1337 /* Now construct the bfd. */
1338 if (! pe_ILF_build_a_bfd (abfd
, magic
, symbol_name
,
1339 source_dll
, ordinal
, types
))
1341 bfd_release (abfd
, ptr
);
1345 return pe_ILF_cleanup
;
1349 pe_bfd_read_buildid (bfd
*abfd
)
1351 pe_data_type
*pe
= pe_data (abfd
);
1352 struct internal_extra_pe_aouthdr
*extra
= &pe
->pe_opthdr
;
1355 bfd_size_type dataoff
;
1357 bfd_vma addr
= extra
->DataDirectory
[PE_DEBUG_DATA
].VirtualAddress
;
1358 bfd_size_type size
= extra
->DataDirectory
[PE_DEBUG_DATA
].Size
;
1363 addr
+= extra
->ImageBase
;
1365 /* Search for the section containing the DebugDirectory. */
1366 for (section
= abfd
->sections
; section
!= NULL
; section
= section
->next
)
1368 if ((addr
>= section
->vma
) && (addr
< (section
->vma
+ section
->size
)))
1372 if (section
== NULL
)
1375 if (!(section
->flags
& SEC_HAS_CONTENTS
))
1378 dataoff
= addr
- section
->vma
;
1380 /* PR 20605 and 22373: Make sure that the data is really there.
1381 Note - since we are dealing with unsigned quantities we have
1382 to be careful to check for potential overflows. */
1383 if (dataoff
>= section
->size
1384 || size
> section
->size
- dataoff
)
1387 (_("%pB: error: debug data ends beyond end of debug directory"),
1392 /* Read the whole section. */
1393 if (!bfd_malloc_and_get_section (abfd
, section
, &data
))
1399 /* Search for a CodeView entry in the DebugDirectory */
1400 for (i
= 0; i
< size
/ sizeof (struct external_IMAGE_DEBUG_DIRECTORY
); i
++)
1402 struct external_IMAGE_DEBUG_DIRECTORY
*ext
1403 = &((struct external_IMAGE_DEBUG_DIRECTORY
*)(data
+ dataoff
))[i
];
1404 struct internal_IMAGE_DEBUG_DIRECTORY idd
;
1406 _bfd_XXi_swap_debugdir_in (abfd
, ext
, &idd
);
1408 if (idd
.Type
== PE_IMAGE_DEBUG_TYPE_CODEVIEW
)
1410 char buffer
[256 + 1];
1411 CODEVIEW_INFO
*cvinfo
= (CODEVIEW_INFO
*) buffer
;
1414 The debug entry doesn't have to have to be in a section, in which
1415 case AddressOfRawData is 0, so always use PointerToRawData.
1417 if (_bfd_XXi_slurp_codeview_record (abfd
,
1418 (file_ptr
) idd
.PointerToRawData
,
1419 idd
.SizeOfData
, cvinfo
, NULL
))
1421 struct bfd_build_id
* build_id
= bfd_alloc (abfd
,
1422 sizeof (struct bfd_build_id
) + cvinfo
->SignatureLength
);
1425 build_id
->size
= cvinfo
->SignatureLength
;
1426 memcpy(build_id
->data
, cvinfo
->Signature
,
1427 cvinfo
->SignatureLength
);
1428 abfd
->build_id
= build_id
;
1439 pe_bfd_object_p (bfd
* abfd
)
1442 struct external_DOS_hdr dos_hdr
;
1443 struct external_PEI_IMAGE_hdr image_hdr
;
1444 struct internal_filehdr internal_f
;
1445 struct internal_aouthdr internal_a
;
1446 bfd_size_type opt_hdr_size
;
1450 /* Detect if this a Microsoft Import Library Format element. */
1451 /* First read the beginning of the header. */
1452 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1453 || bfd_bread (buffer
, (bfd_size_type
) 6, abfd
) != 6)
1455 if (bfd_get_error () != bfd_error_system_call
)
1456 bfd_set_error (bfd_error_wrong_format
);
1460 /* Then check the magic and the version (only 0 is supported). */
1461 if (H_GET_32 (abfd
, buffer
) == 0xffff0000
1462 && H_GET_16 (abfd
, buffer
+ 4) == 0)
1463 return pe_ILF_object_p (abfd
);
1465 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1466 || bfd_bread (&dos_hdr
, (bfd_size_type
) sizeof (dos_hdr
), abfd
)
1467 != sizeof (dos_hdr
))
1469 if (bfd_get_error () != bfd_error_system_call
)
1470 bfd_set_error (bfd_error_wrong_format
);
1474 /* There are really two magic numbers involved; the magic number
1475 that says this is a NT executable (PEI) and the magic number that
1476 determines the architecture. The former is IMAGE_DOS_SIGNATURE, stored in
1477 the e_magic field. The latter is stored in the f_magic field.
1478 If the NT magic number isn't valid, the architecture magic number
1479 could be mimicked by some other field (specifically, the number
1480 of relocs in section 3). Since this routine can only be called
1481 correctly for a PEI file, check the e_magic number here, and, if
1482 it doesn't match, clobber the f_magic number so that we don't get
1484 if (H_GET_16 (abfd
, dos_hdr
.e_magic
) != IMAGE_DOS_SIGNATURE
)
1486 bfd_set_error (bfd_error_wrong_format
);
1490 offset
= H_GET_32 (abfd
, dos_hdr
.e_lfanew
);
1491 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0
1492 || (bfd_bread (&image_hdr
, (bfd_size_type
) sizeof (image_hdr
), abfd
)
1493 != sizeof (image_hdr
)))
1495 if (bfd_get_error () != bfd_error_system_call
)
1496 bfd_set_error (bfd_error_wrong_format
);
1500 if (H_GET_32 (abfd
, image_hdr
.nt_signature
) != 0x4550)
1502 bfd_set_error (bfd_error_wrong_format
);
1506 /* Swap file header, so that we get the location for calling
1508 bfd_coff_swap_filehdr_in (abfd
, &image_hdr
, &internal_f
);
1510 if (! bfd_coff_bad_format_hook (abfd
, &internal_f
)
1511 || internal_f
.f_opthdr
> bfd_coff_aoutsz (abfd
))
1513 bfd_set_error (bfd_error_wrong_format
);
1517 memcpy (internal_f
.pe
.dos_message
, dos_hdr
.dos_message
,
1518 sizeof (internal_f
.pe
.dos_message
));
1520 /* Read the optional header, which has variable size. */
1521 opt_hdr_size
= internal_f
.f_opthdr
;
1523 if (opt_hdr_size
!= 0)
1525 bfd_size_type amt
= opt_hdr_size
;
1528 /* PR 17521 file: 230-131433-0.004. */
1529 if (amt
< sizeof (PEAOUTHDR
))
1530 amt
= sizeof (PEAOUTHDR
);
1532 opthdr
= _bfd_alloc_and_read (abfd
, amt
, opt_hdr_size
);
1535 if (amt
> opt_hdr_size
)
1536 memset (opthdr
+ opt_hdr_size
, 0, amt
- opt_hdr_size
);
1538 bfd_coff_swap_aouthdr_in (abfd
, opthdr
, &internal_a
);
1540 struct internal_extra_pe_aouthdr
*a
= &internal_a
.pe
;
1543 /* Use Subsystem to distinguish between pei-arm-little and
1544 pei-arm-wince-little. */
1546 if (a
->Subsystem
!= IMAGE_SUBSYSTEM_WINDOWS_CE_GUI
)
1548 if (a
->Subsystem
== IMAGE_SUBSYSTEM_WINDOWS_CE_GUI
)
1551 bfd_set_error (bfd_error_wrong_format
);
1556 if ((a
->SectionAlignment
& -a
->SectionAlignment
) != a
->SectionAlignment
1557 || a
->SectionAlignment
>= 0x80000000)
1559 _bfd_error_handler (_("%pB: adjusting invalid SectionAlignment"),
1561 a
->SectionAlignment
&= -a
->SectionAlignment
;
1562 if (a
->SectionAlignment
>= 0x80000000)
1563 a
->SectionAlignment
= 0x40000000;
1566 if ((a
->FileAlignment
& -a
->FileAlignment
) != a
->FileAlignment
1567 || a
->FileAlignment
> a
->SectionAlignment
)
1569 _bfd_error_handler (_("%pB: adjusting invalid FileAlignment"),
1571 a
->FileAlignment
&= -a
->FileAlignment
;
1572 if (a
->FileAlignment
> a
->SectionAlignment
)
1573 a
->FileAlignment
= a
->SectionAlignment
;
1576 if (a
->NumberOfRvaAndSizes
> IMAGE_NUMBEROF_DIRECTORY_ENTRIES
)
1577 _bfd_error_handler (_("%pB: invalid NumberOfRvaAndSizes"), abfd
);
1580 result
= coff_real_object_p (abfd
, internal_f
.f_nscns
, &internal_f
,
1583 : (struct internal_aouthdr
*) NULL
));
1587 /* Now the whole header has been processed, see if there is a build-id */
1588 pe_bfd_read_buildid(abfd
);
1594 #define coff_object_p pe_bfd_object_p
1595 #endif /* COFF_IMAGE_WITH_PE */