1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright (C) 1995-2014 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 bfd_boolean (*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 bfd_boolean
pe_print_private_bfd_data (bfd
*, void *);
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
) (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 bfd_boolean
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 const bfd_target
*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_pex64
195 # define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out
196 #elif defined COFF_WITH_pep
197 # define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out
199 # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
203 coff_swap_scnhdr_in (bfd
* abfd
, void * ext
, void * in
)
205 SCNHDR
*scnhdr_ext
= (SCNHDR
*) ext
;
206 struct internal_scnhdr
*scnhdr_int
= (struct internal_scnhdr
*) in
;
208 memcpy (scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof (scnhdr_int
->s_name
));
210 scnhdr_int
->s_vaddr
= GET_SCNHDR_VADDR (abfd
, scnhdr_ext
->s_vaddr
);
211 scnhdr_int
->s_paddr
= GET_SCNHDR_PADDR (abfd
, scnhdr_ext
->s_paddr
);
212 scnhdr_int
->s_size
= GET_SCNHDR_SIZE (abfd
, scnhdr_ext
->s_size
);
213 scnhdr_int
->s_scnptr
= GET_SCNHDR_SCNPTR (abfd
, scnhdr_ext
->s_scnptr
);
214 scnhdr_int
->s_relptr
= GET_SCNHDR_RELPTR (abfd
, scnhdr_ext
->s_relptr
);
215 scnhdr_int
->s_lnnoptr
= GET_SCNHDR_LNNOPTR (abfd
, scnhdr_ext
->s_lnnoptr
);
216 scnhdr_int
->s_flags
= H_GET_32 (abfd
, scnhdr_ext
->s_flags
);
218 /* MS handles overflow of line numbers by carrying into the reloc
219 field (it appears). Since it's supposed to be zero for PE
220 *IMAGE* format, that's safe. This is still a bit iffy. */
221 #ifdef COFF_IMAGE_WITH_PE
222 scnhdr_int
->s_nlnno
= (H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
)
223 + (H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
) << 16));
224 scnhdr_int
->s_nreloc
= 0;
226 scnhdr_int
->s_nreloc
= H_GET_16 (abfd
, scnhdr_ext
->s_nreloc
);
227 scnhdr_int
->s_nlnno
= H_GET_16 (abfd
, scnhdr_ext
->s_nlnno
);
230 if (scnhdr_int
->s_vaddr
!= 0)
232 scnhdr_int
->s_vaddr
+= pe_data (abfd
)->pe_opthdr
.ImageBase
;
233 /* Do not cut upper 32-bits for 64-bit vma. */
234 #ifndef COFF_WITH_pex64
235 scnhdr_int
->s_vaddr
&= 0xffffffff;
239 #ifndef COFF_NO_HACK_SCNHDR_SIZE
240 /* If this section holds uninitialized data and is from an object file
241 or from an executable image that has not initialized the field,
242 or if the image is an executable file and the physical size is padded,
243 use the virtual size (stored in s_paddr) instead. */
244 if (scnhdr_int
->s_paddr
> 0
245 && (((scnhdr_int
->s_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) != 0
246 && (! bfd_pei_p (abfd
) || scnhdr_int
->s_size
== 0))
247 || (bfd_pei_p (abfd
) && (scnhdr_int
->s_size
> scnhdr_int
->s_paddr
))))
248 /* This code used to set scnhdr_int->s_paddr to 0. However,
249 coff_set_alignment_hook stores s_paddr in virt_size, which
250 only works if it correctly holds the virtual size of the
252 scnhdr_int
->s_size
= scnhdr_int
->s_paddr
;
257 pe_mkobject (bfd
* abfd
)
260 bfd_size_type amt
= sizeof (pe_data_type
);
262 abfd
->tdata
.pe_obj_data
= (struct pe_tdata
*) bfd_zalloc (abfd
, amt
);
264 if (abfd
->tdata
.pe_obj_data
== 0)
271 /* in_reloc_p is architecture dependent. */
272 pe
->in_reloc_p
= in_reloc_p
;
274 memset (& pe
->pe_opthdr
, 0, sizeof pe
->pe_opthdr
);
278 /* Create the COFF backend specific information. */
281 pe_mkobject_hook (bfd
* abfd
,
283 void * aouthdr ATTRIBUTE_UNUSED
)
285 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
288 if (! pe_mkobject (abfd
))
292 pe
->coff
.sym_filepos
= internal_f
->f_symptr
;
293 /* These members communicate important constants about the symbol
294 table to GDB's symbol-reading code. These `constants'
295 unfortunately vary among coff implementations... */
296 pe
->coff
.local_n_btmask
= N_BTMASK
;
297 pe
->coff
.local_n_btshft
= N_BTSHFT
;
298 pe
->coff
.local_n_tmask
= N_TMASK
;
299 pe
->coff
.local_n_tshift
= N_TSHIFT
;
300 pe
->coff
.local_symesz
= SYMESZ
;
301 pe
->coff
.local_auxesz
= AUXESZ
;
302 pe
->coff
.local_linesz
= LINESZ
;
304 pe
->coff
.timestamp
= internal_f
->f_timdat
;
306 obj_raw_syment_count (abfd
) =
307 obj_conv_table_size (abfd
) =
310 pe
->real_flags
= internal_f
->f_flags
;
312 if ((internal_f
->f_flags
& F_DLL
) != 0)
315 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
316 abfd
->flags
|= HAS_DEBUG
;
318 #ifdef COFF_IMAGE_WITH_PE
320 pe
->pe_opthdr
= ((struct internal_aouthdr
*) aouthdr
)->pe
;
324 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
325 coff_data (abfd
) ->flags
= 0;
332 pe_print_private_bfd_data (bfd
*abfd
, void * vfile
)
334 FILE *file
= (FILE *) vfile
;
336 if (!_bfd_XX_print_private_bfd_data_common (abfd
, vfile
))
339 if (pe_saved_coff_bfd_print_private_bfd_data
== NULL
)
344 return pe_saved_coff_bfd_print_private_bfd_data (abfd
, vfile
);
347 /* Copy any private info we understand from the input bfd
348 to the output bfd. */
351 pe_bfd_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
353 /* PR binutils/716: Copy the large address aware flag.
354 XXX: Should we be copying other flags or other fields in the pe_data()
356 if (pe_data (obfd
) != NULL
357 && pe_data (ibfd
) != NULL
358 && pe_data (ibfd
)->real_flags
& IMAGE_FILE_LARGE_ADDRESS_AWARE
)
359 pe_data (obfd
)->real_flags
|= IMAGE_FILE_LARGE_ADDRESS_AWARE
;
361 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd
, obfd
))
364 if (pe_saved_coff_bfd_copy_private_bfd_data
)
365 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd
, obfd
);
370 #define coff_bfd_copy_private_section_data \
371 _bfd_XX_bfd_copy_private_section_data
373 #define coff_get_symbol_info _bfd_XX_get_symbol_info
375 #ifdef COFF_IMAGE_WITH_PE
377 /* Code to handle Microsoft's Image Library Format.
378 Also known as LINK6 format.
379 Documentation about this format can be found at:
381 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
383 /* The following constants specify the sizes of the various data
384 structures that we have to create in order to build a bfd describing
385 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
386 and SIZEOF_IDATA7 below is to allow for the possibility that we might
387 need a padding byte in order to ensure 16 bit alignment for the section's
390 The value for SIZEOF_ILF_STRINGS is computed as follows:
392 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
393 per symbol for their names (longest section name is .idata$x).
395 There will be two symbols for the imported value, one the symbol name
396 and one with _imp__ prefixed. Allowing for the terminating nul's this
397 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
399 The strings in the string table must start STRING__SIZE_SIZE bytes into
400 the table in order to for the string lookup code in coffgen/coffcode to
402 #define NUM_ILF_RELOCS 8
403 #define NUM_ILF_SECTIONS 6
404 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
406 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
407 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
408 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
409 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
410 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
411 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
412 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
413 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
414 + 21 + strlen (source_dll) \
415 + NUM_ILF_SECTIONS * 9 \
417 #define SIZEOF_IDATA2 (5 * 4)
419 /* For PEx64 idata4 & 5 have thumb size of 8 bytes. */
420 #ifdef COFF_WITH_pex64
421 #define SIZEOF_IDATA4 (2 * 4)
422 #define SIZEOF_IDATA5 (2 * 4)
424 #define SIZEOF_IDATA4 (1 * 4)
425 #define SIZEOF_IDATA5 (1 * 4)
428 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
429 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
430 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
432 #define ILF_DATA_SIZE \
434 + SIZEOF_ILF_SYM_TABLE \
435 + SIZEOF_ILF_NATIVE_SYMS \
436 + SIZEOF_ILF_SYM_PTR_TABLE \
437 + SIZEOF_ILF_EXT_SYMS \
438 + SIZEOF_ILF_RELOCS \
439 + SIZEOF_ILF_INT_RELOCS \
440 + SIZEOF_ILF_STRINGS \
446 + SIZEOF_ILF_SECTIONS \
447 + MAX_TEXT_SECTION_SIZE
449 /* Create an empty relocation against the given symbol. */
452 pe_ILF_make_a_symbol_reloc (pe_ILF_vars
* vars
,
454 bfd_reloc_code_real_type reloc
,
455 struct bfd_symbol
** sym
,
456 unsigned int sym_index
)
459 struct internal_reloc
* internal
;
461 entry
= vars
->reltab
+ vars
->relcount
;
462 internal
= vars
->int_reltab
+ vars
->relcount
;
464 entry
->address
= address
;
466 entry
->howto
= bfd_reloc_type_lookup (vars
->abfd
, reloc
);
467 entry
->sym_ptr_ptr
= sym
;
469 internal
->r_vaddr
= address
;
470 internal
->r_symndx
= sym_index
;
471 internal
->r_type
= entry
->howto
->type
;
475 BFD_ASSERT (vars
->relcount
<= NUM_ILF_RELOCS
);
478 /* Create an empty relocation against the given section. */
481 pe_ILF_make_a_reloc (pe_ILF_vars
* vars
,
483 bfd_reloc_code_real_type reloc
,
486 pe_ILF_make_a_symbol_reloc (vars
, address
, reloc
, sec
->symbol_ptr_ptr
,
487 coff_section_data (vars
->abfd
, sec
)->i
);
490 /* Move the queued relocs into the given section. */
493 pe_ILF_save_relocs (pe_ILF_vars
* vars
,
496 /* Make sure that there is somewhere to store the internal relocs. */
497 if (coff_section_data (vars
->abfd
, sec
) == NULL
)
498 /* We should probably return an error indication here. */
501 coff_section_data (vars
->abfd
, sec
)->relocs
= vars
->int_reltab
;
502 coff_section_data (vars
->abfd
, sec
)->keep_relocs
= TRUE
;
504 sec
->relocation
= vars
->reltab
;
505 sec
->reloc_count
= vars
->relcount
;
506 sec
->flags
|= SEC_RELOC
;
508 vars
->reltab
+= vars
->relcount
;
509 vars
->int_reltab
+= vars
->relcount
;
512 BFD_ASSERT ((bfd_byte
*) vars
->int_reltab
< (bfd_byte
*) vars
->string_table
);
515 /* Create a global symbol and add it to the relevant tables. */
518 pe_ILF_make_a_symbol (pe_ILF_vars
* vars
,
520 const char * symbol_name
,
521 asection_ptr section
,
522 flagword extra_flags
)
524 coff_symbol_type
* sym
;
525 combined_entry_type
* ent
;
527 unsigned short sclass
;
529 if (extra_flags
& BSF_LOCAL
)
535 if (vars
->magic
== THUMBPEMAGIC
)
537 if (extra_flags
& BSF_FUNCTION
)
538 sclass
= C_THUMBEXTFUNC
;
539 else if (extra_flags
& BSF_LOCAL
)
540 sclass
= C_THUMBSTAT
;
546 BFD_ASSERT (vars
->sym_index
< NUM_ILF_SYMS
);
549 ent
= vars
->native_ptr
;
550 esym
= vars
->esym_ptr
;
552 /* Copy the symbol's name into the string table. */
553 sprintf (vars
->string_ptr
, "%s%s", prefix
, symbol_name
);
556 section
= bfd_und_section_ptr
;
558 /* Initialise the external symbol. */
559 H_PUT_32 (vars
->abfd
, vars
->string_ptr
- vars
->string_table
,
561 H_PUT_16 (vars
->abfd
, section
->target_index
, esym
->e_scnum
);
562 esym
->e_sclass
[0] = sclass
;
564 /* The following initialisations are unnecessary - the memory is
565 zero initialised. They are just kept here as reminders. */
567 /* Initialise the internal symbol structure. */
568 ent
->u
.syment
.n_sclass
= sclass
;
569 ent
->u
.syment
.n_scnum
= section
->target_index
;
570 ent
->u
.syment
._n
._n_n
._n_offset
= (bfd_hostptr_t
) sym
;
572 sym
->symbol
.the_bfd
= vars
->abfd
;
573 sym
->symbol
.name
= vars
->string_ptr
;
574 sym
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| extra_flags
;
575 sym
->symbol
.section
= section
;
578 * vars
->table_ptr
= vars
->sym_index
;
579 * vars
->sym_ptr_ptr
= sym
;
581 /* Adjust pointers for the next symbol. */
584 vars
->sym_ptr_ptr
++;
588 vars
->string_ptr
+= strlen (symbol_name
) + strlen (prefix
) + 1;
590 BFD_ASSERT (vars
->string_ptr
< vars
->end_string_ptr
);
593 /* Create a section. */
596 pe_ILF_make_a_section (pe_ILF_vars
* vars
,
599 flagword extra_flags
)
604 sec
= bfd_make_section_old_way (vars
->abfd
, name
);
608 flags
= SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
| SEC_IN_MEMORY
;
610 bfd_set_section_flags (vars
->abfd
, sec
, flags
| extra_flags
);
612 (void) bfd_set_section_alignment (vars
->abfd
, sec
, 2);
614 /* Check that we will not run out of space. */
615 BFD_ASSERT (vars
->data
+ size
< vars
->bim
->buffer
+ vars
->bim
->size
);
617 /* Set the section size and contents. The actual
618 contents are filled in by our parent. */
619 bfd_set_section_size (vars
->abfd
, sec
, (bfd_size_type
) size
);
620 sec
->contents
= vars
->data
;
621 sec
->target_index
= vars
->sec_index
++;
623 /* Advance data pointer in the vars structure. */
626 /* Skip the padding byte if it was not needed.
627 The logic here is that if the string length is odd,
628 then the entire string length, including the null byte,
629 is even and so the extra, padding byte, is not needed. */
633 /* Create a coff_section_tdata structure for our use. */
634 sec
->used_by_bfd
= (struct coff_section_tdata
*) vars
->data
;
635 vars
->data
+= sizeof (struct coff_section_tdata
);
637 BFD_ASSERT (vars
->data
<= vars
->bim
->buffer
+ vars
->bim
->size
);
639 /* Create a symbol to refer to this section. */
640 pe_ILF_make_a_symbol (vars
, "", name
, sec
, BSF_LOCAL
);
642 /* Cache the index to the symbol in the coff_section_data structure. */
643 coff_section_data (vars
->abfd
, sec
)->i
= vars
->sym_index
- 1;
648 /* This structure contains the code that goes into the .text section
649 in order to perform a jump into the DLL lookup table. The entries
650 in the table are index by the magic number used to represent the
651 machine type in the PE file. The contents of the data[] arrays in
652 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
653 The SIZE field says how many bytes in the DATA array are actually
654 used. The OFFSET field says where in the data array the address
655 of the .idata$5 section should be placed. */
656 #define MAX_TEXT_SECTION_SIZE 32
660 unsigned short magic
;
661 unsigned char data
[MAX_TEXT_SECTION_SIZE
];
667 static jump_table jtab
[] =
671 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
678 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
685 { /* XXX fill me in */ },
690 #ifdef MIPS_ARCH_MAGIC_WINCE
691 { MIPS_ARCH_MAGIC_WINCE
,
692 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
693 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
698 #ifdef SH_ARCH_MAGIC_WINCE
699 { SH_ARCH_MAGIC_WINCE
,
700 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
701 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
708 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
709 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
716 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
717 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
725 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
728 /* Build a full BFD from the information supplied in a ILF object. */
731 pe_ILF_build_a_bfd (bfd
* abfd
,
735 unsigned int ordinal
,
740 struct internal_filehdr internal_f
;
741 unsigned int import_type
;
742 unsigned int import_name_type
;
743 asection_ptr id4
, id5
, id6
= NULL
, text
= NULL
;
744 coff_symbol_type
** imp_sym
;
745 unsigned int imp_index
;
747 /* Decode and verify the types field of the ILF structure. */
748 import_type
= types
& 0x3;
749 import_name_type
= (types
& 0x1c) >> 2;
758 /* XXX code yet to be written. */
759 _bfd_error_handler (_("%B: Unhandled import type; %x"),
764 _bfd_error_handler (_("%B: Unrecognised import type; %x"),
769 switch (import_name_type
)
773 case IMPORT_NAME_NOPREFIX
:
774 case IMPORT_NAME_UNDECORATE
:
778 _bfd_error_handler (_("%B: Unrecognised import name type; %x"),
779 abfd
, import_name_type
);
783 /* Initialise local variables.
785 Note these are kept in a structure rather than being
786 declared as statics since bfd frowns on global variables.
788 We are going to construct the contents of the BFD in memory,
789 so allocate all the space that we will need right now. */
791 = (struct bfd_in_memory
*) bfd_malloc ((bfd_size_type
) sizeof (*vars
.bim
));
792 if (vars
.bim
== NULL
)
795 ptr
= (bfd_byte
*) bfd_zmalloc ((bfd_size_type
) ILF_DATA_SIZE
);
796 vars
.bim
->buffer
= ptr
;
797 vars
.bim
->size
= ILF_DATA_SIZE
;
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 #ifdef COFF_WITH_pex64
863 ((unsigned int *) id4
->contents
)[0] = ordinal
;
864 ((unsigned int *) id4
->contents
)[1] = 0x80000000;
865 ((unsigned int *) id5
->contents
)[0] = ordinal
;
866 ((unsigned int *) id5
->contents
)[1] = 0x80000000;
868 * (unsigned int *) id4
->contents
= ordinal
| 0x80000000;
869 * (unsigned int *) id5
->contents
= ordinal
| 0x80000000;
877 /* Create .idata$6 - the Hint Name Table. */
878 id6
= pe_ILF_make_a_section (& vars
, ".idata$6", SIZEOF_IDATA6
, 0);
882 /* If necessary, trim the import symbol name. */
883 symbol
= symbol_name
;
885 /* As used by MS compiler, '_', '@', and '?' are alternative
886 forms of USER_LABEL_PREFIX, with '?' for c++ mangled names,
887 '@' used for fastcall (in C), '_' everywhere else. Only one
888 of these is used for a symbol. We strip this leading char for
889 IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the
890 PE COFF 6.0 spec (section 8.3, Import Name Type). */
892 if (import_name_type
!= IMPORT_NAME
)
896 /* Check that we don't remove for targets with empty
897 USER_LABEL_PREFIX the leading underscore. */
898 if ((c
== '_' && abfd
->xvec
->symbol_leading_char
!= 0)
899 || c
== '@' || c
== '?')
903 len
= strlen (symbol
);
904 if (import_name_type
== IMPORT_NAME_UNDECORATE
)
906 /* Truncate at the first '@'. */
907 char *at
= strchr (symbol
, '@');
913 id6
->contents
[0] = ordinal
& 0xff;
914 id6
->contents
[1] = ordinal
>> 8;
916 memcpy ((char *) id6
->contents
+ 2, symbol
, len
);
917 id6
->contents
[len
+ 2] = '\0';
920 if (import_name_type
!= IMPORT_ORDINAL
)
922 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
923 pe_ILF_save_relocs (&vars
, id4
);
925 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_RVA
, id6
);
926 pe_ILF_save_relocs (&vars
, id5
);
929 /* Create extra sections depending upon the type of import we are dealing with. */
935 /* Create a .text section.
936 First we need to look up its contents in the jump table. */
937 for (i
= NUM_ENTRIES (jtab
); i
--;)
939 if (jtab
[i
].size
== 0)
941 if (jtab
[i
].magic
== magic
)
944 /* If we did not find a matching entry something is wrong. */
948 /* Create the .text section. */
949 text
= pe_ILF_make_a_section (& vars
, ".text", jtab
[i
].size
, SEC_CODE
);
953 /* Copy in the jump code. */
954 memcpy (text
->contents
, jtab
[i
].data
, jtab
[i
].size
);
956 /* Create an import symbol. */
957 pe_ILF_make_a_symbol (& vars
, "__imp_", symbol_name
, id5
, 0);
958 imp_sym
= vars
.sym_ptr_ptr
- 1;
959 imp_index
= vars
.sym_index
- 1;
961 /* Create a reloc for the data in the text section. */
962 #ifdef MIPS_ARCH_MAGIC_WINCE
963 if (magic
== MIPS_ARCH_MAGIC_WINCE
)
965 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_HI16_S
,
966 (struct bfd_symbol
**) imp_sym
,
968 pe_ILF_make_a_reloc (&vars
, (bfd_vma
) 0, BFD_RELOC_LO16
, text
);
969 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) 4, BFD_RELOC_LO16
,
970 (struct bfd_symbol
**) imp_sym
,
975 pe_ILF_make_a_symbol_reloc (&vars
, (bfd_vma
) jtab
[i
].offset
,
976 BFD_RELOC_32
, (asymbol
**) imp_sym
,
979 pe_ILF_save_relocs (& vars
, text
);
986 /* XXX code not yet written. */
990 /* Initialise the bfd. */
991 memset (& internal_f
, 0, sizeof (internal_f
));
993 internal_f
.f_magic
= magic
;
994 internal_f
.f_symptr
= 0;
995 internal_f
.f_nsyms
= 0;
996 internal_f
.f_flags
= F_AR32WR
| F_LNNO
; /* XXX is this correct ? */
998 if ( ! bfd_set_start_address (abfd
, (bfd_vma
) 0)
999 || ! bfd_coff_set_arch_mach_hook (abfd
, & internal_f
))
1002 if (bfd_coff_mkobject_hook (abfd
, (void *) & internal_f
, NULL
) == NULL
)
1005 coff_data (abfd
)->pe
= 1;
1007 if (vars
.magic
== THUMBPEMAGIC
)
1008 /* Stop some linker warnings about thumb code not supporting interworking. */
1009 coff_data (abfd
)->flags
|= F_INTERWORK
| F_INTERWORK_SET
;
1012 /* Switch from file contents to memory contents. */
1013 bfd_cache_close (abfd
);
1015 abfd
->iostream
= (void *) vars
.bim
;
1016 abfd
->flags
|= BFD_IN_MEMORY
/* | HAS_LOCALS */;
1017 abfd
->iovec
= &_bfd_memory_iovec
;
1020 obj_sym_filepos (abfd
) = 0;
1022 /* Now create a symbol describing the imported value. */
1023 switch (import_type
)
1026 pe_ILF_make_a_symbol (& vars
, "", symbol_name
, text
,
1027 BSF_NOT_AT_END
| BSF_FUNCTION
);
1029 /* Create an import symbol for the DLL, without the
1031 ptr
= (bfd_byte
*) strrchr (source_dll
, '.');
1034 pe_ILF_make_a_symbol (& vars
, "__IMPORT_DESCRIPTOR_", source_dll
, NULL
, 0);
1040 /* Nothing to do here. */
1044 /* XXX code not yet written. */
1048 /* Point the bfd at the symbol table. */
1049 obj_symbols (abfd
) = vars
.sym_cache
;
1050 bfd_get_symcount (abfd
) = vars
.sym_index
;
1052 obj_raw_syments (abfd
) = vars
.native_syms
;
1053 obj_raw_syment_count (abfd
) = vars
.sym_index
;
1055 obj_coff_external_syms (abfd
) = (void *) vars
.esym_table
;
1056 obj_coff_keep_syms (abfd
) = TRUE
;
1058 obj_convert (abfd
) = vars
.sym_table
;
1059 obj_conv_table_size (abfd
) = vars
.sym_index
;
1061 obj_coff_strings (abfd
) = vars
.string_table
;
1062 obj_coff_keep_strings (abfd
) = TRUE
;
1064 abfd
->flags
|= HAS_SYMS
;
1069 if (vars
.bim
->buffer
!= NULL
)
1070 free (vars
.bim
->buffer
);
1075 /* We have detected a Image Library Format archive element.
1076 Decode the element and return the appropriate target. */
1078 static const bfd_target
*
1079 pe_ILF_object_p (bfd
* abfd
)
1081 bfd_byte buffer
[14];
1085 unsigned int machine
;
1087 unsigned int ordinal
;
1091 /* Upon entry the first six bytes of the ILF header have
1092 already been read. Now read the rest of the header. */
1093 if (bfd_bread (buffer
, (bfd_size_type
) 14, abfd
) != 14)
1098 machine
= H_GET_16 (abfd
, ptr
);
1101 /* Check that the machine type is recognised. */
1106 case IMAGE_FILE_MACHINE_UNKNOWN
:
1107 case IMAGE_FILE_MACHINE_ALPHA
:
1108 case IMAGE_FILE_MACHINE_ALPHA64
:
1109 case IMAGE_FILE_MACHINE_IA64
:
1112 case IMAGE_FILE_MACHINE_I386
:
1118 case IMAGE_FILE_MACHINE_AMD64
:
1124 case IMAGE_FILE_MACHINE_M68K
:
1130 case IMAGE_FILE_MACHINE_R3000
:
1131 case IMAGE_FILE_MACHINE_R4000
:
1132 case IMAGE_FILE_MACHINE_R10000
:
1134 case IMAGE_FILE_MACHINE_MIPS16
:
1135 case IMAGE_FILE_MACHINE_MIPSFPU
:
1136 case IMAGE_FILE_MACHINE_MIPSFPU16
:
1137 #ifdef MIPS_ARCH_MAGIC_WINCE
1138 magic
= MIPS_ARCH_MAGIC_WINCE
;
1142 case IMAGE_FILE_MACHINE_SH3
:
1143 case IMAGE_FILE_MACHINE_SH4
:
1144 #ifdef SH_ARCH_MAGIC_WINCE
1145 magic
= SH_ARCH_MAGIC_WINCE
;
1149 case IMAGE_FILE_MACHINE_ARM
:
1155 case IMAGE_FILE_MACHINE_THUMB
:
1158 extern const bfd_target TARGET_LITTLE_SYM
;
1160 if (abfd
->xvec
== & TARGET_LITTLE_SYM
)
1161 magic
= THUMBPEMAGIC
;
1166 case IMAGE_FILE_MACHINE_POWERPC
:
1167 /* We no longer support PowerPC. */
1170 (_("%B: Unrecognised machine type (0x%x)"
1171 " in Import Library Format archive"),
1173 bfd_set_error (bfd_error_malformed_archive
);
1182 (_("%B: Recognised but unhandled machine type (0x%x)"
1183 " in Import Library Format archive"),
1185 bfd_set_error (bfd_error_wrong_format
);
1190 /* We do not bother to check the date.
1191 date = H_GET_32 (abfd, ptr); */
1194 size
= H_GET_32 (abfd
, ptr
);
1200 (_("%B: size field is zero in Import Library Format header"), abfd
);
1201 bfd_set_error (bfd_error_malformed_archive
);
1206 ordinal
= H_GET_16 (abfd
, ptr
);
1209 types
= H_GET_16 (abfd
, ptr
);
1212 /* Now read in the two strings that follow. */
1213 ptr
= (bfd_byte
*) bfd_alloc (abfd
, size
);
1217 if (bfd_bread (ptr
, size
, abfd
) != size
)
1219 bfd_release (abfd
, ptr
);
1223 symbol_name
= (char *) ptr
;
1224 source_dll
= symbol_name
+ strlen (symbol_name
) + 1;
1226 /* Verify that the strings are null terminated. */
1227 if (ptr
[size
- 1] != 0
1228 || (bfd_size_type
) ((bfd_byte
*) source_dll
- ptr
) >= size
)
1231 (_("%B: string not null terminated in ILF object file."), abfd
);
1232 bfd_set_error (bfd_error_malformed_archive
);
1233 bfd_release (abfd
, ptr
);
1237 /* Now construct the bfd. */
1238 if (! pe_ILF_build_a_bfd (abfd
, magic
, symbol_name
,
1239 source_dll
, ordinal
, types
))
1241 bfd_release (abfd
, ptr
);
1248 static const bfd_target
*
1249 pe_bfd_object_p (bfd
* abfd
)
1252 struct external_PEI_DOS_hdr dos_hdr
;
1253 struct external_PEI_IMAGE_hdr image_hdr
;
1254 struct internal_filehdr internal_f
;
1255 struct internal_aouthdr internal_a
;
1256 file_ptr opt_hdr_size
;
1259 /* Detect if this a Microsoft Import Library Format element. */
1260 /* First read the beginning of the header. */
1261 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1262 || bfd_bread (buffer
, (bfd_size_type
) 6, abfd
) != 6)
1264 if (bfd_get_error () != bfd_error_system_call
)
1265 bfd_set_error (bfd_error_wrong_format
);
1269 /* Then check the magic and the version (only 0 is supported). */
1270 if (H_GET_32 (abfd
, buffer
) == 0xffff0000
1271 && H_GET_16 (abfd
, buffer
+ 4) == 0)
1272 return pe_ILF_object_p (abfd
);
1274 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1275 || bfd_bread (&dos_hdr
, (bfd_size_type
) sizeof (dos_hdr
), abfd
)
1276 != sizeof (dos_hdr
))
1278 if (bfd_get_error () != bfd_error_system_call
)
1279 bfd_set_error (bfd_error_wrong_format
);
1283 /* There are really two magic numbers involved; the magic number
1284 that says this is a NT executable (PEI) and the magic number that
1285 determines the architecture. The former is DOSMAGIC, stored in
1286 the e_magic field. The latter is stored in the f_magic field.
1287 If the NT magic number isn't valid, the architecture magic number
1288 could be mimicked by some other field (specifically, the number
1289 of relocs in section 3). Since this routine can only be called
1290 correctly for a PEI file, check the e_magic number here, and, if
1291 it doesn't match, clobber the f_magic number so that we don't get
1293 if (H_GET_16 (abfd
, dos_hdr
.e_magic
) != DOSMAGIC
)
1295 bfd_set_error (bfd_error_wrong_format
);
1299 offset
= H_GET_32 (abfd
, dos_hdr
.e_lfanew
);
1300 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0
1301 || (bfd_bread (&image_hdr
, (bfd_size_type
) sizeof (image_hdr
), abfd
)
1302 != sizeof (image_hdr
)))
1304 if (bfd_get_error () != bfd_error_system_call
)
1305 bfd_set_error (bfd_error_wrong_format
);
1309 if (H_GET_32 (abfd
, image_hdr
.nt_signature
) != 0x4550)
1311 bfd_set_error (bfd_error_wrong_format
);
1315 /* Swap file header, so that we get the location for calling
1317 bfd_coff_swap_filehdr_in (abfd
, &image_hdr
, &internal_f
);
1319 if (! bfd_coff_bad_format_hook (abfd
, &internal_f
)
1320 || internal_f
.f_opthdr
> bfd_coff_aoutsz (abfd
))
1322 bfd_set_error (bfd_error_wrong_format
);
1326 /* Read the optional header, which has variable size. */
1327 opt_hdr_size
= internal_f
.f_opthdr
;
1329 if (opt_hdr_size
!= 0)
1331 bfd_size_type amt
= opt_hdr_size
;
1334 /* PR 17521 file: 230-131433-0.004. */
1335 if (amt
< sizeof (PEAOUTHDR
))
1336 amt
= sizeof (PEAOUTHDR
);
1338 opthdr
= bfd_zalloc (abfd
, amt
);
1341 if (bfd_bread (opthdr
, opt_hdr_size
, abfd
)
1342 != (bfd_size_type
) opt_hdr_size
)
1345 bfd_coff_swap_aouthdr_in (abfd
, opthdr
, & internal_a
);
1348 return coff_real_object_p (abfd
, internal_f
.f_nscns
, &internal_f
,
1351 : (struct internal_aouthdr
*) NULL
));
1354 #define coff_object_p pe_bfd_object_p
1355 #endif /* COFF_IMAGE_WITH_PE */