1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000 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 2 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., 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
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.
60 static boolean (*pe_saved_coff_bfd_print_private_bfd_data
)
61 PARAMS ((bfd
*, PTR
)) =
62 #ifndef coff_bfd_print_private_bfd_data
65 coff_bfd_print_private_bfd_data
;
66 #undef coff_bfd_print_private_bfd_data
69 static boolean pe_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
70 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
72 static boolean (*pe_saved_coff_bfd_copy_private_bfd_data
)
73 PARAMS ((bfd
*, bfd
*)) =
74 #ifndef coff_bfd_copy_private_bfd_data
77 coff_bfd_copy_private_bfd_data
;
78 #undef coff_bfd_copy_private_bfd_data
81 static boolean pe_bfd_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
82 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
84 #define coff_mkobject pe_mkobject
85 #define coff_mkobject_hook pe_mkobject_hook
87 #ifndef NO_COFF_RELOCS
88 static void coff_swap_reloc_in
PARAMS ((bfd
*, PTR
, PTR
));
89 static unsigned int coff_swap_reloc_out
PARAMS ((bfd
*, PTR
, PTR
));
91 static void coff_swap_filehdr_in
PARAMS ((bfd
*, PTR
, PTR
));
92 static void coff_swap_scnhdr_in
PARAMS ((bfd
*, PTR
, PTR
));
93 static boolean pe_mkobject
PARAMS ((bfd
*));
94 static PTR pe_mkobject_hook
PARAMS ((bfd
*, PTR
, PTR
));
96 #ifdef COFF_IMAGE_WITH_PE
97 /* This structure contains static variables used by the ILF code. */
98 typedef asection
* asection_ptr
;
104 struct bfd_in_memory
* bim
;
105 unsigned short magic
;
108 unsigned int relcount
;
110 coff_symbol_type
* sym_cache
;
111 coff_symbol_type
* sym_ptr
;
112 unsigned int sym_index
;
114 unsigned int * sym_table
;
115 unsigned int * table_ptr
;
117 combined_entry_type
* native_syms
;
118 combined_entry_type
* native_ptr
;
120 coff_symbol_type
** sym_ptr_table
;
121 coff_symbol_type
** sym_ptr_ptr
;
123 unsigned int sec_index
;
127 char * end_string_ptr
;
132 struct internal_reloc
* int_reltab
;
136 static asection_ptr pe_ILF_make_a_section
PARAMS ((pe_ILF_vars
*, const char *, unsigned int, flagword
));
137 static void pe_ILF_make_a_reloc
PARAMS ((pe_ILF_vars
*, bfd_vma
, bfd_reloc_code_real_type
, asection_ptr
));
138 static void pe_ILF_make_a_symbol
PARAMS ((pe_ILF_vars
*, const char *, const char *, asection_ptr
, flagword
));
139 static void pe_ILF_save_relocs
PARAMS ((pe_ILF_vars
*, asection_ptr
));
140 static void pe_ILF_make_a_symbol_reloc
PARAMS ((pe_ILF_vars
*, bfd_vma
, bfd_reloc_code_real_type
, struct symbol_cache_entry
**, unsigned int));
141 static boolean pe_ILF_build_a_bfd
PARAMS ((bfd
*, unsigned short, bfd_byte
*, bfd_byte
*, unsigned int, unsigned int));
142 static const bfd_target
* pe_ILF_object_p
PARAMS ((bfd
*));
143 static const bfd_target
* pe_bfd_object_p
PARAMS ((bfd
*));
144 #endif /* COFF_IMAGE_WITH_PE */
146 /**********************************************************************/
148 #ifndef NO_COFF_RELOCS
150 coff_swap_reloc_in (abfd
, src
, dst
)
155 RELOC
*reloc_src
= (RELOC
*) src
;
156 struct internal_reloc
*reloc_dst
= (struct internal_reloc
*) dst
;
158 reloc_dst
->r_vaddr
= bfd_h_get_32(abfd
, (bfd_byte
*)reloc_src
->r_vaddr
);
159 reloc_dst
->r_symndx
= bfd_h_get_signed_32(abfd
, (bfd_byte
*) reloc_src
->r_symndx
);
161 reloc_dst
->r_type
= bfd_h_get_16(abfd
, (bfd_byte
*) reloc_src
->r_type
);
163 #ifdef SWAP_IN_RELOC_OFFSET
164 reloc_dst
->r_offset
= SWAP_IN_RELOC_OFFSET(abfd
,
165 (bfd_byte
*) reloc_src
->r_offset
);
170 coff_swap_reloc_out (abfd
, src
, dst
)
175 struct internal_reloc
*reloc_src
= (struct internal_reloc
*)src
;
176 struct external_reloc
*reloc_dst
= (struct external_reloc
*)dst
;
177 bfd_h_put_32(abfd
, reloc_src
->r_vaddr
, (bfd_byte
*) reloc_dst
->r_vaddr
);
178 bfd_h_put_32(abfd
, reloc_src
->r_symndx
, (bfd_byte
*) reloc_dst
->r_symndx
);
180 bfd_h_put_16(abfd
, reloc_src
->r_type
, (bfd_byte
*)
183 #ifdef SWAP_OUT_RELOC_OFFSET
184 SWAP_OUT_RELOC_OFFSET(abfd
,
186 (bfd_byte
*) reloc_dst
->r_offset
);
188 #ifdef SWAP_OUT_RELOC_EXTRA
189 SWAP_OUT_RELOC_EXTRA(abfd
,reloc_src
, reloc_dst
);
193 #endif /* not NO_COFF_RELOCS */
196 coff_swap_filehdr_in (abfd
, src
, dst
)
201 FILHDR
*filehdr_src
= (FILHDR
*) src
;
202 struct internal_filehdr
*filehdr_dst
= (struct internal_filehdr
*) dst
;
203 filehdr_dst
->f_magic
= bfd_h_get_16(abfd
, (bfd_byte
*) filehdr_src
->f_magic
);
204 filehdr_dst
->f_nscns
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_nscns
);
205 filehdr_dst
->f_timdat
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_timdat
);
207 filehdr_dst
->f_nsyms
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_nsyms
);
208 filehdr_dst
->f_flags
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_flags
);
209 filehdr_dst
->f_symptr
= bfd_h_get_32 (abfd
, (bfd_byte
*) filehdr_src
->f_symptr
);
211 /* Other people's tools sometimes generate headers with an nsyms but
213 if (filehdr_dst
->f_nsyms
!= 0 && filehdr_dst
->f_symptr
== 0)
215 filehdr_dst
->f_nsyms
= 0;
216 filehdr_dst
->f_flags
|= F_LSYMS
;
219 filehdr_dst
->f_opthdr
= bfd_h_get_16(abfd
,
220 (bfd_byte
*)filehdr_src
-> f_opthdr
);
223 #ifdef COFF_IMAGE_WITH_PE
224 #define coff_swap_filehdr_out _bfd_pei_only_swap_filehdr_out
226 #define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
230 coff_swap_scnhdr_in (abfd
, ext
, in
)
235 SCNHDR
*scnhdr_ext
= (SCNHDR
*) ext
;
236 struct internal_scnhdr
*scnhdr_int
= (struct internal_scnhdr
*) in
;
238 memcpy(scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof (scnhdr_int
->s_name
));
239 scnhdr_int
->s_vaddr
=
240 GET_SCNHDR_VADDR (abfd
, (bfd_byte
*) scnhdr_ext
->s_vaddr
);
241 scnhdr_int
->s_paddr
=
242 GET_SCNHDR_PADDR (abfd
, (bfd_byte
*) scnhdr_ext
->s_paddr
);
244 GET_SCNHDR_SIZE (abfd
, (bfd_byte
*) scnhdr_ext
->s_size
);
245 scnhdr_int
->s_scnptr
=
246 GET_SCNHDR_SCNPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_scnptr
);
247 scnhdr_int
->s_relptr
=
248 GET_SCNHDR_RELPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_relptr
);
249 scnhdr_int
->s_lnnoptr
=
250 GET_SCNHDR_LNNOPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_lnnoptr
);
251 scnhdr_int
->s_flags
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_flags
);
253 /* MS handles overflow of line numbers by carrying into the reloc
254 field (it appears). Since it's supposed to be zero for PE
255 *IMAGE* format, that's safe. This is still a bit iffy. */
256 #ifdef COFF_IMAGE_WITH_PE
257 scnhdr_int
->s_nlnno
=
258 (bfd_h_get_16 (abfd
, (bfd_byte
*) scnhdr_ext
->s_nlnno
)
259 + (bfd_h_get_16 (abfd
, (bfd_byte
*) scnhdr_ext
->s_nreloc
) << 16));
260 scnhdr_int
->s_nreloc
= 0;
262 scnhdr_int
->s_nreloc
= bfd_h_get_16 (abfd
,
263 (bfd_byte
*) scnhdr_ext
->s_nreloc
);
264 scnhdr_int
->s_nlnno
= bfd_h_get_16 (abfd
,
265 (bfd_byte
*) scnhdr_ext
->s_nlnno
);
268 if (scnhdr_int
->s_vaddr
!= 0)
270 scnhdr_int
->s_vaddr
+= pe_data (abfd
)->pe_opthdr
.ImageBase
;
271 scnhdr_int
->s_vaddr
&= 0xffffffff;
274 #ifndef COFF_NO_HACK_SCNHDR_SIZE
275 /* If this section holds uninitialized data, use the virtual size
276 (stored in s_paddr) instead of the physical size. */
277 if ((scnhdr_int
->s_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) != 0)
279 scnhdr_int
->s_size
= scnhdr_int
->s_paddr
;
280 /* This code used to set scnhdr_int->s_paddr to 0. However,
281 coff_set_alignment_hook stores s_paddr in virt_size, which
282 only works if it correctly holds the virtual size of the
293 abfd
->tdata
.pe_obj_data
=
294 (struct pe_tdata
*) bfd_zalloc (abfd
, sizeof (pe_data_type
));
296 if (abfd
->tdata
.pe_obj_data
== 0)
303 /* in_reloc_p is architecture dependent. */
304 pe
->in_reloc_p
= in_reloc_p
;
308 /* Create the COFF backend specific information. */
310 pe_mkobject_hook (abfd
, filehdr
, aouthdr
)
313 PTR aouthdr ATTRIBUTE_UNUSED
;
315 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
318 if (pe_mkobject (abfd
) == false)
322 pe
->coff
.sym_filepos
= internal_f
->f_symptr
;
323 /* These members communicate important constants about the symbol
324 table to GDB's symbol-reading code. These `constants'
325 unfortunately vary among coff implementations... */
326 pe
->coff
.local_n_btmask
= N_BTMASK
;
327 pe
->coff
.local_n_btshft
= N_BTSHFT
;
328 pe
->coff
.local_n_tmask
= N_TMASK
;
329 pe
->coff
.local_n_tshift
= N_TSHIFT
;
330 pe
->coff
.local_symesz
= SYMESZ
;
331 pe
->coff
.local_auxesz
= AUXESZ
;
332 pe
->coff
.local_linesz
= LINESZ
;
334 pe
->coff
.timestamp
= internal_f
->f_timdat
;
336 obj_raw_syment_count (abfd
) =
337 obj_conv_table_size (abfd
) =
340 pe
->real_flags
= internal_f
->f_flags
;
342 if ((internal_f
->f_flags
& F_DLL
) != 0)
345 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
346 abfd
->flags
|= HAS_DEBUG
;
348 #ifdef COFF_IMAGE_WITH_PE
350 pe
->pe_opthdr
= ((struct internal_aouthdr
*)aouthdr
)->pe
;
354 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
355 coff_data (abfd
) ->flags
= 0;
362 pe_print_private_bfd_data (abfd
, vfile
)
366 FILE *file
= (FILE *) vfile
;
368 if (!_bfd_pe_print_private_bfd_data_common (abfd
, vfile
))
371 if (pe_saved_coff_bfd_print_private_bfd_data
!= NULL
)
375 return pe_saved_coff_bfd_print_private_bfd_data (abfd
, vfile
);
381 /* Copy any private info we understand from the input bfd
382 to the output bfd. */
385 pe_bfd_copy_private_bfd_data (ibfd
, obfd
)
388 if (!_bfd_pe_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_pe_bfd_copy_private_section_data
400 #define coff_get_symbol_info _bfd_pe_get_symbol_info
402 #ifdef COFF_IMAGE_WITH_PE
404 /* Code to handle Microsoft's Image Library Format.
405 Also known as LINK6 format.
406 Documentation about this format can be found at:
408 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
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)
445 #define SIZEOF_IDATA4 (1 * 4)
446 #define SIZEOF_IDATA5 (1 * 4)
447 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
448 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
449 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
451 #define ILF_DATA_SIZE \
452 sizeof (* vars.bim) \
454 + SIZEOF_ILF_SYM_TABLE \
455 + SIZEOF_ILF_NATIVE_SYMS \
456 + SIZEOF_ILF_SYM_PTR_TABLE \
457 + SIZEOF_ILF_EXT_SYMS \
458 + SIZEOF_ILF_RELOCS \
459 + SIZEOF_ILF_INT_RELOCS \
460 + SIZEOF_ILF_STRINGS \
466 + SIZEOF_ILF_SECTIONS \
467 + MAX_TEXT_SECTION_SIZE
469 /* Create an empty relocation against the given symbol. */
471 pe_ILF_make_a_symbol_reloc (pe_ILF_vars
* vars
,
473 bfd_reloc_code_real_type reloc
,
474 struct symbol_cache_entry
** sym
,
475 unsigned int sym_index
)
478 struct internal_reloc
* internal
;
480 entry
= vars
->reltab
+ vars
->relcount
;
481 internal
= vars
->int_reltab
+ vars
->relcount
;
483 entry
->address
= address
;
485 entry
->howto
= bfd_reloc_type_lookup (vars
->abfd
, reloc
);
486 entry
->sym_ptr_ptr
= sym
;
488 internal
->r_vaddr
= address
;
489 internal
->r_symndx
= sym_index
;
490 internal
->r_type
= entry
->howto
->type
;
491 #if 0 /* These fields do not need to be initialised. */
492 internal
->r_size
= 0;
493 internal
->r_extern
= 0;
494 internal
->r_offset
= 0;
499 BFD_ASSERT (vars
->relcount
<= NUM_ILF_RELOCS
);
502 /* Create an empty relocation against the given section. */
504 pe_ILF_make_a_reloc (pe_ILF_vars
* vars
,
506 bfd_reloc_code_real_type reloc
,
509 pe_ILF_make_a_symbol_reloc (vars
, address
, reloc
, sec
->symbol_ptr_ptr
,
510 coff_section_data (vars
->abfd
, sec
)->i
);
513 /* Move the queued relocs into the given section. */
515 pe_ILF_save_relocs (pe_ILF_vars
* vars
,
518 /* Make sure that there is somewhere to store the internal relocs. */
519 if (coff_section_data (vars
->abfd
, sec
) == NULL
)
520 /* We should probably return an error indication here. */
523 coff_section_data (vars
->abfd
, sec
)->relocs
= vars
->int_reltab
;
524 coff_section_data (vars
->abfd
, sec
)->keep_relocs
= true;
526 sec
->relocation
= vars
->reltab
;
527 sec
->reloc_count
= vars
->relcount
;
528 sec
->flags
|= SEC_RELOC
;
530 vars
->reltab
+= vars
->relcount
;
531 vars
->int_reltab
+= vars
->relcount
;
534 BFD_ASSERT ((bfd_byte
*)vars
->int_reltab
< (bfd_byte
*)vars
->string_table
);
537 /* Create a global symbol and add it to the relevant tables. */
539 pe_ILF_make_a_symbol (pe_ILF_vars
* vars
,
541 const char * symbol_name
,
542 asection_ptr section
,
543 flagword extra_flags
)
545 coff_symbol_type
* sym
;
546 combined_entry_type
* ent
;
548 unsigned short sclass
;
550 if (extra_flags
& BSF_LOCAL
)
556 if (vars
->magic
== THUMBPEMAGIC
)
558 if (extra_flags
& BSF_FUNCTION
)
559 sclass
= C_THUMBEXTFUNC
;
560 else if (extra_flags
& BSF_LOCAL
)
561 sclass
= C_THUMBSTAT
;
567 BFD_ASSERT (vars
->sym_index
< NUM_ILF_SYMS
);
570 ent
= vars
->native_ptr
;
571 esym
= vars
->esym_ptr
;
573 /* Copy the symbol's name into the string table. */
574 sprintf (vars
->string_ptr
, "%s%s", prefix
, symbol_name
);
577 section
= (asection_ptr
) & bfd_und_section
;
579 /* Initialise the external symbol. */
580 bfd_h_put_32 (vars
->abfd
, vars
->string_ptr
- vars
->string_table
, (bfd_byte
*) esym
->e
.e
.e_offset
);
581 bfd_h_put_16 (vars
->abfd
, section
->target_index
, (bfd_byte
*) esym
->e_scnum
);
582 esym
->e_sclass
[0] = sclass
;
584 /* The following initialisations are unnecessary - the memory is
585 zero initialised. They are just kept here as reminders. */
587 esym
->e
.e
.e_zeroes
= 0;
589 esym
->e_type
= T_NULL
;
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
= (long) sym
;
598 #if 0 /* See comment above. */
599 ent
->u
.syment
.n_value
= 0;
600 ent
->u
.syment
.n_flags
= 0;
601 ent
->u
.syment
.n_type
= T_NULL
;
602 ent
->u
.syment
.n_numaux
= 0;
606 sym
->symbol
.the_bfd
= vars
->abfd
;
607 sym
->symbol
.name
= vars
->string_ptr
;
608 sym
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| extra_flags
;
609 sym
->symbol
.section
= section
;
612 #if 0 /* See comment above. */
613 sym
->symbol
.value
= 0;
614 sym
->symbol
.udata
.i
= 0;
615 sym
->done_lineno
= false;
619 * vars
->table_ptr
= vars
->sym_index
;
620 * vars
->sym_ptr_ptr
= sym
;
622 /* Adjust pointers for the next symbol. */
625 vars
->sym_ptr_ptr
++;
629 vars
->string_ptr
+= strlen (symbol_name
) + strlen (prefix
) + 1;
631 BFD_ASSERT (vars
->string_ptr
< vars
->end_string_ptr
);
634 /* Create a section. */
636 pe_ILF_make_a_section (pe_ILF_vars
* vars
,
639 flagword extra_flags
)
644 sec
= bfd_make_section_old_way (vars
->abfd
, name
);
648 flags
= SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
| SEC_IN_MEMORY
;
650 bfd_set_section_flags (vars
->abfd
, sec
, flags
| extra_flags
);
652 bfd_set_section_alignment (vars
->abfd
, sec
, 2);
654 /* Check that we will not run out of space. */
655 BFD_ASSERT (vars
->data
+ size
< vars
->bim
->buffer
+ vars
->bim
->size
);
657 /* Set the section size and contents. The actual
658 contents are filled in by our parent. */
659 bfd_set_section_size (vars
->abfd
, sec
, size
);
660 sec
->contents
= vars
->data
;
661 sec
->target_index
= vars
->sec_index
++;
663 /* Advance data pointer in the vars structure. */
666 /* Skip the padding byte if it was not needed.
667 The logic here is that if the string length is odd,
668 then the entire string length, including the null byte,
669 is even and so the extra, padding byte, is not needed. */
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 jump_table jtab
[] =
711 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
717 { MC68MAGIC
, { /* XXX fill me in */ }, 0, 0 },
719 #ifdef MIPS_ARCH_MAGIC_WINCE
720 { MIPS_ARCH_MAGIC_WINCE
,
721 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
722 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
727 #ifdef SH_ARCH_MAGIC_WINCE
728 { SH_ARCH_MAGIC_WINCE
,
729 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
730 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
737 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
738 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
745 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
746 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
754 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
757 /* Build a full BFD from the information supplied in a ILF object. */
759 pe_ILF_build_a_bfd (bfd
* abfd
,
760 unsigned short magic
,
761 bfd_byte
* symbol_name
,
762 bfd_byte
* source_dll
,
763 unsigned int ordinal
,
768 struct internal_filehdr internal_f
;
769 unsigned int import_type
;
770 unsigned int import_name_type
;
771 asection_ptr id4
, id5
, id6
= NULL
, text
= NULL
;
772 coff_symbol_type
** imp_sym
;
773 unsigned int imp_index
;
775 /* Decode and verify the types field of the ILF structure. */
776 import_type
= types
& 0x3;
777 import_name_type
= (types
& 0x1c) >> 2;
786 /* XXX code yet to be written. */
787 _bfd_error_handler (_("%s: Unhandled import type; %x"),
788 bfd_get_filename (abfd
), import_type
);
792 _bfd_error_handler (_("%s: Unrecognised import type; %x"),
793 bfd_get_filename (abfd
), import_type
);
797 switch (import_name_type
)
801 case IMPORT_NAME_NOPREFIX
:
802 case IMPORT_NAME_UNDECORATE
:
806 _bfd_error_handler (_("%s: Unrecognised import name type; %x"),
807 bfd_get_filename (abfd
), import_name_type
);
811 /* Initialise local variables.
813 Note these are kept in a structure rather than being
814 declared as statics since bfd frowns on global variables.
816 We are going to construct the contents of the BFD in memory,
817 so allocate all the space that we will need right now. */
818 ptr
= bfd_zalloc (abfd
, ILF_DATA_SIZE
);
822 /* Create a bfd_in_memory structure. */
823 vars
.bim
= (struct bfd_in_memory
*) ptr
;
824 vars
.bim
->buffer
= ptr
;
825 vars
.bim
->size
= ILF_DATA_SIZE
;
826 ptr
+= sizeof (* vars
.bim
);
828 /* Initialise the pointers to regions of the memory and the
829 other contents of the pe_ILF_vars structure as well. */
830 vars
.sym_cache
= (coff_symbol_type
*) ptr
;
831 vars
.sym_ptr
= (coff_symbol_type
*) ptr
;
833 ptr
+= SIZEOF_ILF_SYMS
;
835 vars
.sym_table
= (unsigned int *) ptr
;
836 vars
.table_ptr
= (unsigned int *) ptr
;
837 ptr
+= SIZEOF_ILF_SYM_TABLE
;
839 vars
.native_syms
= (combined_entry_type
*) ptr
;
840 vars
.native_ptr
= (combined_entry_type
*) ptr
;
841 ptr
+= SIZEOF_ILF_NATIVE_SYMS
;
843 vars
.sym_ptr_table
= (coff_symbol_type
**) ptr
;
844 vars
.sym_ptr_ptr
= (coff_symbol_type
**) ptr
;
845 ptr
+= SIZEOF_ILF_SYM_PTR_TABLE
;
847 vars
.esym_table
= (SYMENT
*) ptr
;
848 vars
.esym_ptr
= (SYMENT
*) ptr
;
849 ptr
+= SIZEOF_ILF_EXT_SYMS
;
851 vars
.reltab
= (arelent
*) ptr
;
853 ptr
+= SIZEOF_ILF_RELOCS
;
855 vars
.int_reltab
= (struct internal_reloc
*) ptr
;
856 ptr
+= SIZEOF_ILF_INT_RELOCS
;
858 vars
.string_table
= ptr
;
859 vars
.string_ptr
= ptr
+ STRING_SIZE_SIZE
;
860 ptr
+= SIZEOF_ILF_STRINGS
;
861 vars
.end_string_ptr
= ptr
;
863 /* The remaining space in bim->buffer is used
864 by the pe_ILF_make_a_section() function. */
870 /* Create the initial .idata$<n> sections:
871 [.idata$2: Import Directory Table -- not needed]
872 .idata$4: Import Lookup Table
873 .idata$5: Import Address Table
875 Note we do not create a .idata$3 section as this is
876 created for us by the linker script. */
877 id4
= pe_ILF_make_a_section (& vars
, ".idata$4", SIZEOF_IDATA4
, 0);
878 id5
= pe_ILF_make_a_section (& vars
, ".idata$5", SIZEOF_IDATA5
, 0);
879 if (id4
== NULL
|| id5
== NULL
)
882 /* Fill in the contents of these sections. */
883 if (import_name_type
== IMPORT_ORDINAL
)
886 /* XXX - treat as IMPORT_NAME ??? */
889 * (unsigned int *) id4
->contents
= ordinal
| 0x80000000;
890 * (unsigned int *) id5
->contents
= ordinal
| 0x80000000;
896 /* Create .idata$6 - the Hint Name Table. */
897 id6
= pe_ILF_make_a_section (& vars
, ".idata$6", SIZEOF_IDATA6
, 0);
901 /* If necessary, trim the import symbol name. */
902 symbol
= symbol_name
;
904 if (import_name_type
!= IMPORT_NAME
)
905 /* Skip any prefix in symbol_name. */
906 while (*symbol
== '@' || * symbol
== '?' || * symbol
== '_')
909 if (import_name_type
== IMPORT_NAME_UNDECORATE
)
911 /* Truncate at the first '@' */
912 while (* symbol
!= 0 && * symbol
!= '@')
918 id6
->contents
[0] = ordinal
& 0xff;
919 id6
->contents
[1] = ordinal
>> 8;
921 strcpy (id6
->contents
+ 2, symbol
);
924 if (import_name_type
!= IMPORT_ORDINAL
)
926 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_RVA
, id6
);
927 pe_ILF_save_relocs (& vars
, id4
);
929 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_RVA
, id6
);
930 pe_ILF_save_relocs (& vars
, id5
);
933 /* Create extra sections depending upon the type of import we are dealing with. */
939 /* Create a .text section.
940 First we need to look up its contents in the jump table. */
941 for (i
= NUM_ENTRIES (jtab
); i
--;)
943 if (jtab
[i
].size
== 0)
945 if (jtab
[i
].magic
== magic
)
948 /* If we did not find a matching entry something is wrong. */
952 /* Create the .text section. */
953 text
= pe_ILF_make_a_section (& vars
, ".text", jtab
[i
].size
, SEC_CODE
);
957 /* Copy in the jump code. */
958 memcpy (text
->contents
, jtab
[i
].data
, jtab
[i
].size
);
960 /* Create an import symbol. */
961 pe_ILF_make_a_symbol (& vars
, "__imp_", symbol_name
, id5
, 0);
962 imp_sym
= vars
.sym_ptr_ptr
- 1;
963 imp_index
= vars
.sym_index
- 1;
965 /* Create a reloc for the data in the text section. */
966 #ifdef MIPS_ARCH_MAGIC_WINCE
967 if (magic
== MIPS_ARCH_MAGIC_WINCE
)
969 pe_ILF_make_a_symbol_reloc (& vars
, 0, BFD_RELOC_HI16_S
,
970 (struct symbol_cache_entry
**) imp_sym
, imp_index
);
971 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_LO16
, text
);
972 pe_ILF_make_a_symbol_reloc (& vars
, 4, BFD_RELOC_LO16
,
973 (struct symbol_cache_entry
**) imp_sym
, imp_index
);
977 pe_ILF_make_a_symbol_reloc (& vars
, jtab
[i
].offset
, BFD_RELOC_32
,
978 (asymbol
**) imp_sym
, imp_index
);
980 pe_ILF_save_relocs (& vars
, text
);
987 /* XXX code not yet written. */
991 /* Initialise the bfd. */
992 memset (& internal_f
, 0, sizeof (internal_f
));
994 internal_f
.f_magic
= magic
;
995 internal_f
.f_symptr
= 0;
996 internal_f
.f_nsyms
= 0;
997 internal_f
.f_flags
= F_AR32WR
| F_LNNO
; /* XXX is this correct ? */
999 if ( ! bfd_set_start_address (abfd
, 0)
1000 || ! bfd_coff_set_arch_mach_hook (abfd
, & internal_f
))
1003 if (bfd_coff_mkobject_hook (abfd
, (PTR
) & internal_f
, NULL
) == NULL
)
1006 coff_data (abfd
)->pe
= 1;
1008 if (vars
.magic
== THUMBPEMAGIC
)
1009 /* Stop some linker warnings about thumb code not supporting interworking. */
1010 coff_data (abfd
)->flags
|= F_INTERWORK
| F_INTERWORK_SET
;
1013 /* Switch from file contents to memory contents. */
1014 bfd_cache_close (abfd
);
1016 abfd
->iostream
= (PTR
) vars
.bim
;
1017 abfd
->flags
|= BFD_IN_MEMORY
/* | HAS_LOCALS */;
1019 obj_sym_filepos (abfd
) = 0;
1021 /* Now create a symbol describing the imported value. */
1022 switch (import_type
)
1027 pe_ILF_make_a_symbol (& vars
, "", symbol_name
, text
,
1028 BSF_NOT_AT_END
| BSF_FUNCTION
);
1030 /* Create an import symbol for the DLL, without the
1032 ptr
= strrchr (source_dll
, '.');
1035 pe_ILF_make_a_symbol (& vars
, "__IMPORT_DESCRIPTOR_", source_dll
, NULL
, 0);
1041 /* Nothing to do here. */
1045 /* XXX code not yet written. */
1049 /* Point the bfd at the symbol table. */
1050 obj_symbols (abfd
) = vars
.sym_cache
;
1051 bfd_get_symcount (abfd
) = vars
.sym_index
;
1053 obj_raw_syments (abfd
) = vars
.native_syms
;
1054 obj_raw_syment_count (abfd
) = vars
.sym_index
;
1056 obj_coff_external_syms (abfd
) = (PTR
) vars
.esym_table
;
1057 obj_coff_keep_syms (abfd
) = true;
1059 obj_convert (abfd
) = vars
.sym_table
;
1060 obj_conv_table_size (abfd
) = vars
.sym_index
;
1062 obj_coff_strings (abfd
) = vars
.string_table
;
1063 obj_coff_keep_strings (abfd
) = true;
1065 abfd
->flags
|= HAS_SYMS
;
1070 /* We have detected a Image Library Format archive element.
1071 Decode the element and return the appropriate target. */
1072 static const bfd_target
*
1073 pe_ILF_object_p (bfd
* abfd
)
1075 bfd_byte buffer
[16];
1077 bfd_byte
* symbol_name
;
1078 bfd_byte
* source_dll
;
1079 unsigned int machine
;
1081 unsigned int ordinal
;
1083 unsigned short magic
;
1085 /* Upon entry the first four buyes of the ILF header have
1086 already been read. Now read the rest of the header. */
1087 if (bfd_read (buffer
, 1, 16, abfd
) != 16)
1092 /* We do not bother to check the version number.
1093 version = bfd_h_get_16 (abfd, ptr); */
1096 machine
= bfd_h_get_16 (abfd
, ptr
);
1099 /* Check that the machine type is recognised. */
1104 case IMAGE_FILE_MACHINE_UNKNOWN
:
1105 case IMAGE_FILE_MACHINE_ALPHA
:
1106 case IMAGE_FILE_MACHINE_ALPHA64
:
1107 case IMAGE_FILE_MACHINE_IA64
:
1110 case IMAGE_FILE_MACHINE_I386
:
1116 case IMAGE_FILE_MACHINE_M68K
:
1122 case IMAGE_FILE_MACHINE_R3000
:
1123 case IMAGE_FILE_MACHINE_R4000
:
1124 case IMAGE_FILE_MACHINE_R10000
:
1126 case IMAGE_FILE_MACHINE_MIPS16
:
1127 case IMAGE_FILE_MACHINE_MIPSFPU
:
1128 case IMAGE_FILE_MACHINE_MIPSFPU16
:
1129 #ifdef MIPS_ARCH_MAGIC_WINCE
1130 magic
= MIPS_ARCH_MAGIC_WINCE
;
1134 case IMAGE_FILE_MACHINE_SH3
:
1135 case IMAGE_FILE_MACHINE_SH4
:
1136 #ifdef SH_ARCH_MAGIC_WINCE
1137 magic
= SH_ARCH_MAGIC_WINCE
;
1141 case IMAGE_FILE_MACHINE_ARM
:
1147 case IMAGE_FILE_MACHINE_THUMB
:
1150 extern const bfd_target TARGET_LITTLE_SYM
;
1152 if (abfd
->xvec
== & TARGET_LITTLE_SYM
)
1153 magic
= THUMBPEMAGIC
;
1158 case IMAGE_FILE_MACHINE_POWERPC
:
1159 /* We no longer support PowerPC. */
1163 _("%s: Unrecognised machine type (0x%x) in Import Library Format archive"),
1164 bfd_get_filename (abfd
), machine
);
1165 bfd_set_error (bfd_error_malformed_archive
);
1175 _("%s: Recognised but unhandled machine type (0x%x) in Import Library Format archive"),
1176 bfd_get_filename (abfd
), machine
);
1177 bfd_set_error (bfd_error_wrong_format
);
1182 /* We do not bother to check the date.
1183 date = bfd_h_get_32 (abfd, ptr); */
1186 size
= bfd_h_get_32 (abfd
, ptr
);
1192 (_("%s: size field is zero in Import Library Format header"),
1193 bfd_get_filename (abfd
));
1194 bfd_set_error (bfd_error_malformed_archive
);
1199 ordinal
= bfd_h_get_16 (abfd
, ptr
);
1202 types
= bfd_h_get_16 (abfd
, ptr
);
1205 /* Now read in the two strings that follow. */
1206 ptr
= bfd_alloc (abfd
, size
);
1210 if (bfd_read (ptr
, 1, size
, abfd
) != size
)
1214 source_dll
= ptr
+ strlen (ptr
) + 1;
1216 /* Verify that the strings are null terminated. */
1217 if (ptr
[size
- 1] != 0 || ((unsigned long) (source_dll
- ptr
) >= size
))
1220 (_("%s: string not null terminated in ILF object file."),
1221 bfd_get_filename (abfd
));
1222 bfd_set_error (bfd_error_malformed_archive
);
1227 /* Now construct the bfd. */
1228 if (! pe_ILF_build_a_bfd (abfd
, magic
, symbol_name
,
1229 source_dll
, ordinal
, types
))
1235 static const bfd_target
*
1236 pe_bfd_object_p (bfd
* abfd
)
1239 struct external_PEI_DOS_hdr dos_hdr
;
1240 struct external_PEI_IMAGE_hdr image_hdr
;
1243 /* Detect if this a Microsoft Import Library Format element. */
1244 if (bfd_seek (abfd
, 0x00, SEEK_SET
) != 0
1245 || bfd_read (buffer
, 1, 4, abfd
) != 4)
1247 if (bfd_get_error () != bfd_error_system_call
)
1248 bfd_set_error (bfd_error_wrong_format
);
1252 if (bfd_h_get_32 (abfd
, buffer
) == 0xffff0000)
1253 return pe_ILF_object_p (abfd
);
1255 if (bfd_seek (abfd
, 0x00, SEEK_SET
) != 0
1256 || bfd_read (&dos_hdr
, 1, sizeof (dos_hdr
), abfd
)
1257 != sizeof (dos_hdr
))
1259 if (bfd_get_error () != bfd_error_system_call
)
1260 bfd_set_error (bfd_error_wrong_format
);
1264 /* There are really two magic numbers involved; the magic number
1265 that says this is a NT executable (PEI) and the magic number that
1266 determines the architecture. The former is DOSMAGIC, stored in
1267 the e_magic field. The latter is stored in the f_magic field.
1268 If the NT magic number isn't valid, the architecture magic number
1269 could be mimicked by some other field (specifically, the number
1270 of relocs in section 3). Since this routine can only be called
1271 correctly for a PEI file, check the e_magic number here, and, if
1272 it doesn't match, clobber the f_magic number so that we don't get
1274 if (bfd_h_get_16 (abfd
, (bfd_byte
*) dos_hdr
.e_magic
) != DOSMAGIC
)
1276 bfd_set_error (bfd_error_wrong_format
);
1280 offset
= bfd_h_get_32 (abfd
, (bfd_byte
*) dos_hdr
.e_lfanew
);
1281 if (bfd_seek (abfd
, (file_ptr
) offset
, SEEK_SET
) != 0
1282 || bfd_read (&image_hdr
, 1, sizeof (image_hdr
), abfd
)
1283 != sizeof (image_hdr
))
1285 if (bfd_get_error () != bfd_error_system_call
)
1286 bfd_set_error (bfd_error_wrong_format
);
1290 if (bfd_h_get_32 (abfd
, (bfd_byte
*) image_hdr
.nt_signature
)
1293 bfd_set_error (bfd_error_wrong_format
);
1297 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1298 pick up the COFF header for PE, see "struct external_PEI_filehdr"
1299 in include/coff/pe.h. We adjust so that that will work. */
1301 (file_ptr
) (offset
- sizeof (dos_hdr
)),
1305 if (bfd_get_error () != bfd_error_system_call
)
1306 bfd_set_error (bfd_error_wrong_format
);
1310 return coff_object_p (abfd
);
1313 #define coff_object_p pe_bfd_object_p
1314 #endif /* COFF_IMAGE_WITH_PE */