1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005 Free Software Foundation, Inc.
4 Written by Cygnus Solutions.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22 /* Most of this hacked by Steve Chamberlain,
25 PE/PEI rearrangement (and code added): Donn Terry
26 Softway Systems, Inc. */
28 /* Hey look, some documentation [and in a place you expect to find it]!
30 The main reference for the pei format is "Microsoft Portable Executable
31 and Common Object File Format Specification 4.1". Get it if you need to
32 do some serious hacking on this code.
35 "Peering Inside the PE: A Tour of the Win32 Portable Executable
36 File Format", MSJ 1994, Volume 9.
38 The *sole* difference between the pe format and the pei format is that the
39 latter has an MSDOS 2.0 .exe header on the front that prints the message
40 "This app must be run under Windows." (or some such).
41 (FIXME: Whether that statement is *really* true or not is unknown.
42 Are there more subtle differences between pe and pei formats?
43 For now assume there aren't. If you find one, then for God sakes
46 The Microsoft docs use the word "image" instead of "executable" because
47 the former can also refer to a DLL (shared library). Confusion can arise
48 because the `i' in `pei' also refers to "image". The `pe' format can
49 also create images (i.e. executables), it's just that to run on a win32
50 system you need to use the pei format.
52 FIXME: Please add more docs here so the next poor fool that has to hack
53 on this code has a chance of getting something accomplished without
54 wasting too much time. */
58 static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data) (bfd *, void *) =
59 #ifndef coff_bfd_print_private_bfd_data
62 coff_bfd_print_private_bfd_data;
63 #undef coff_bfd_print_private_bfd_data
66 static bfd_boolean pe_print_private_bfd_data (bfd *, void *);
67 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
69 static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data) (bfd *, bfd *) =
70 #ifndef coff_bfd_copy_private_bfd_data
73 coff_bfd_copy_private_bfd_data;
74 #undef coff_bfd_copy_private_bfd_data
77 static bfd_boolean pe_bfd_copy_private_bfd_data (bfd *, bfd *);
78 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
80 #define coff_mkobject pe_mkobject
81 #define coff_mkobject_hook pe_mkobject_hook
83 #ifdef COFF_IMAGE_WITH_PE
84 /* This structure contains static variables used by the ILF code. */
85 typedef asection * asection_ptr;
91 struct bfd_in_memory * bim;
95 unsigned int relcount;
97 coff_symbol_type * sym_cache;
98 coff_symbol_type * sym_ptr;
99 unsigned int sym_index;
101 unsigned int * sym_table;
102 unsigned int * table_ptr;
104 combined_entry_type * native_syms;
105 combined_entry_type * native_ptr;
107 coff_symbol_type ** sym_ptr_table;
108 coff_symbol_type ** sym_ptr_ptr;
110 unsigned int sec_index;
114 char * end_string_ptr;
119 struct internal_reloc * int_reltab;
122 #endif /* COFF_IMAGE_WITH_PE */
124 #ifndef NO_COFF_RELOCS
126 coff_swap_reloc_in (bfd * abfd, void * src, void * dst)
128 RELOC *reloc_src = (RELOC *) src;
129 struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
131 reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr);
132 reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx);
133 reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type);
134 #ifdef SWAP_IN_RELOC_OFFSET
135 reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET (abfd, reloc_src->r_offset);
140 coff_swap_reloc_out (bfd * abfd, void * src, void * dst)
142 struct internal_reloc *reloc_src = (struct internal_reloc *) src;
143 struct external_reloc *reloc_dst = (struct external_reloc *) dst;
145 H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
146 H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
147 H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type);
149 #ifdef SWAP_OUT_RELOC_OFFSET
150 SWAP_OUT_RELOC_OFFSET (abfd, reloc_src->r_offset, reloc_dst->r_offset);
152 #ifdef SWAP_OUT_RELOC_EXTRA
153 SWAP_OUT_RELOC_EXTRA (abfd, reloc_src, reloc_dst);
157 #endif /* not NO_COFF_RELOCS */
160 coff_swap_filehdr_in (bfd * abfd, void * src, void * dst)
162 FILHDR *filehdr_src = (FILHDR *) src;
163 struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
165 filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->f_magic);
166 filehdr_dst->f_nscns = H_GET_16 (abfd, filehdr_src->f_nscns);
167 filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->f_timdat);
168 filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->f_nsyms);
169 filehdr_dst->f_flags = H_GET_16 (abfd, filehdr_src->f_flags);
170 filehdr_dst->f_symptr = H_GET_32 (abfd, filehdr_src->f_symptr);
172 /* Other people's tools sometimes generate headers with an nsyms but
174 if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0)
176 filehdr_dst->f_nsyms = 0;
177 filehdr_dst->f_flags |= F_LSYMS;
180 filehdr_dst->f_opthdr = H_GET_16 (abfd, filehdr_src-> f_opthdr);
183 #ifdef COFF_IMAGE_WITH_PE
184 # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
186 # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
190 coff_swap_scnhdr_in (bfd * abfd, void * ext, void * in)
192 SCNHDR *scnhdr_ext = (SCNHDR *) ext;
193 struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
195 memcpy (scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name));
197 scnhdr_int->s_vaddr = GET_SCNHDR_VADDR (abfd, scnhdr_ext->s_vaddr);
198 scnhdr_int->s_paddr = GET_SCNHDR_PADDR (abfd, scnhdr_ext->s_paddr);
199 scnhdr_int->s_size = GET_SCNHDR_SIZE (abfd, scnhdr_ext->s_size);
200 scnhdr_int->s_scnptr = GET_SCNHDR_SCNPTR (abfd, scnhdr_ext->s_scnptr);
201 scnhdr_int->s_relptr = GET_SCNHDR_RELPTR (abfd, scnhdr_ext->s_relptr);
202 scnhdr_int->s_lnnoptr = GET_SCNHDR_LNNOPTR (abfd, scnhdr_ext->s_lnnoptr);
203 scnhdr_int->s_flags = H_GET_32 (abfd, scnhdr_ext->s_flags);
205 /* MS handles overflow of line numbers by carrying into the reloc
206 field (it appears). Since it's supposed to be zero for PE
207 *IMAGE* format, that's safe. This is still a bit iffy. */
208 #ifdef COFF_IMAGE_WITH_PE
209 scnhdr_int->s_nlnno = (H_GET_16 (abfd, scnhdr_ext->s_nlnno)
210 + (H_GET_16 (abfd, scnhdr_ext->s_nreloc) << 16));
211 scnhdr_int->s_nreloc = 0;
213 scnhdr_int->s_nreloc = H_GET_16 (abfd, scnhdr_ext->s_nreloc);
214 scnhdr_int->s_nlnno = H_GET_16 (abfd, scnhdr_ext->s_nlnno);
217 if (scnhdr_int->s_vaddr != 0)
219 scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase;
220 scnhdr_int->s_vaddr &= 0xffffffff;
223 #ifndef COFF_NO_HACK_SCNHDR_SIZE
224 /* If this section holds uninitialized data and is from an object file
225 or from an executable image that has not initialized the field,
226 or if the image is an executable file and the physical size is padded,
227 use the virtual size (stored in s_paddr) instead. */
228 if (scnhdr_int->s_paddr > 0
229 && (((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0
230 && (! bfd_pe_executable_p (abfd) || scnhdr_int->s_size == 0))
231 || (bfd_pe_executable_p (abfd) && scnhdr_int->s_size > scnhdr_int->s_paddr)))
232 /* This code used to set scnhdr_int->s_paddr to 0. However,
233 coff_set_alignment_hook stores s_paddr in virt_size, which
234 only works if it correctly holds the virtual size of the
236 scnhdr_int->s_size = scnhdr_int->s_paddr;
241 pe_mkobject (bfd * abfd)
244 bfd_size_type amt = sizeof (pe_data_type);
246 abfd->tdata.pe_obj_data = (struct pe_tdata *) bfd_zalloc (abfd, amt);
248 if (abfd->tdata.pe_obj_data == 0)
255 /* in_reloc_p is architecture dependent. */
256 pe->in_reloc_p = in_reloc_p;
258 #ifdef PEI_FORCE_MINIMUM_ALIGNMENT
259 pe->force_minimum_alignment = 1;
261 #ifdef PEI_TARGET_SUBSYSTEM
262 pe->target_subsystem = PEI_TARGET_SUBSYSTEM;
268 /* Create the COFF backend specific information. */
271 pe_mkobject_hook (bfd * abfd,
273 void * aouthdr ATTRIBUTE_UNUSED)
275 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
278 if (! pe_mkobject (abfd))
282 pe->coff.sym_filepos = internal_f->f_symptr;
283 /* These members communicate important constants about the symbol
284 table to GDB's symbol-reading code. These `constants'
285 unfortunately vary among coff implementations... */
286 pe->coff.local_n_btmask = N_BTMASK;
287 pe->coff.local_n_btshft = N_BTSHFT;
288 pe->coff.local_n_tmask = N_TMASK;
289 pe->coff.local_n_tshift = N_TSHIFT;
290 pe->coff.local_symesz = SYMESZ;
291 pe->coff.local_auxesz = AUXESZ;
292 pe->coff.local_linesz = LINESZ;
294 pe->coff.timestamp = internal_f->f_timdat;
296 obj_raw_syment_count (abfd) =
297 obj_conv_table_size (abfd) =
300 pe->real_flags = internal_f->f_flags;
302 if ((internal_f->f_flags & F_DLL) != 0)
305 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
306 abfd->flags |= HAS_DEBUG;
308 #ifdef COFF_IMAGE_WITH_PE
310 pe->pe_opthdr = ((struct internal_aouthdr *) aouthdr)->pe;
314 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
315 coff_data (abfd) ->flags = 0;
322 pe_print_private_bfd_data (bfd *abfd, void * vfile)
324 FILE *file = (FILE *) vfile;
326 if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile))
329 if (pe_saved_coff_bfd_print_private_bfd_data == NULL)
334 return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile);
337 /* Copy any private info we understand from the input bfd
338 to the output bfd. */
341 pe_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
343 /* PR binutils/716: Copy the large address aware flag.
344 XXX: Should we be copying other flags or other fields in the pe_data()
346 if (pe_data (obfd) != NULL
347 && pe_data (ibfd) != NULL
348 && pe_data (ibfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
349 pe_data (obfd)->real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
351 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd))
354 if (pe_saved_coff_bfd_copy_private_bfd_data)
355 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd);
360 #define coff_bfd_copy_private_section_data \
361 _bfd_XX_bfd_copy_private_section_data
363 #define coff_get_symbol_info _bfd_XX_get_symbol_info
365 #ifdef COFF_IMAGE_WITH_PE
367 /* Code to handle Microsoft's Image Library Format.
368 Also known as LINK6 format.
369 Documentation about this format can be found at:
371 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
373 /* The following constants specify the sizes of the various data
374 structures that we have to create in order to build a bfd describing
375 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
376 and SIZEOF_IDATA7 below is to allow for the possibility that we might
377 need a padding byte in order to ensure 16 bit alignment for the section's
380 The value for SIZEOF_ILF_STRINGS is computed as follows:
382 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
383 per symbol for their names (longest section name is .idata$x).
385 There will be two symbols for the imported value, one the symbol name
386 and one with _imp__ prefixed. Allowing for the terminating nul's this
387 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
389 The strings in the string table must start STRING__SIZE_SIZE bytes into
390 the table in order to for the string lookup code in coffgen/coffcode to
392 #define NUM_ILF_RELOCS 8
393 #define NUM_ILF_SECTIONS 6
394 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
396 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
397 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
398 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
399 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
400 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
401 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
402 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
403 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
404 + 21 + strlen (source_dll) \
405 + NUM_ILF_SECTIONS * 9 \
407 #define SIZEOF_IDATA2 (5 * 4)
408 #define SIZEOF_IDATA4 (1 * 4)
409 #define SIZEOF_IDATA5 (1 * 4)
410 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
411 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
412 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
414 #define ILF_DATA_SIZE \
415 sizeof (* vars.bim) \
417 + SIZEOF_ILF_SYM_TABLE \
418 + SIZEOF_ILF_NATIVE_SYMS \
419 + SIZEOF_ILF_SYM_PTR_TABLE \
420 + SIZEOF_ILF_EXT_SYMS \
421 + SIZEOF_ILF_RELOCS \
422 + SIZEOF_ILF_INT_RELOCS \
423 + SIZEOF_ILF_STRINGS \
429 + SIZEOF_ILF_SECTIONS \
430 + MAX_TEXT_SECTION_SIZE
432 /* Create an empty relocation against the given symbol. */
435 pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars,
437 bfd_reloc_code_real_type reloc,
438 struct bfd_symbol ** sym,
439 unsigned int sym_index)
442 struct internal_reloc * internal;
444 entry = vars->reltab + vars->relcount;
445 internal = vars->int_reltab + vars->relcount;
447 entry->address = address;
449 entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc);
450 entry->sym_ptr_ptr = sym;
452 internal->r_vaddr = address;
453 internal->r_symndx = sym_index;
454 internal->r_type = entry->howto->type;
458 BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS);
461 /* Create an empty relocation against the given section. */
464 pe_ILF_make_a_reloc (pe_ILF_vars * vars,
466 bfd_reloc_code_real_type reloc,
469 pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr,
470 coff_section_data (vars->abfd, sec)->i);
473 /* Move the queued relocs into the given section. */
476 pe_ILF_save_relocs (pe_ILF_vars * vars,
479 /* Make sure that there is somewhere to store the internal relocs. */
480 if (coff_section_data (vars->abfd, sec) == NULL)
481 /* We should probably return an error indication here. */
484 coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab;
485 coff_section_data (vars->abfd, sec)->keep_relocs = TRUE;
487 sec->relocation = vars->reltab;
488 sec->reloc_count = vars->relcount;
489 sec->flags |= SEC_RELOC;
491 vars->reltab += vars->relcount;
492 vars->int_reltab += vars->relcount;
495 BFD_ASSERT ((bfd_byte *) vars->int_reltab < (bfd_byte *) vars->string_table);
498 /* Create a global symbol and add it to the relevant tables. */
501 pe_ILF_make_a_symbol (pe_ILF_vars * vars,
503 const char * symbol_name,
504 asection_ptr section,
505 flagword extra_flags)
507 coff_symbol_type * sym;
508 combined_entry_type * ent;
510 unsigned short sclass;
512 if (extra_flags & BSF_LOCAL)
518 if (vars->magic == THUMBPEMAGIC)
520 if (extra_flags & BSF_FUNCTION)
521 sclass = C_THUMBEXTFUNC;
522 else if (extra_flags & BSF_LOCAL)
523 sclass = C_THUMBSTAT;
529 BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS);
532 ent = vars->native_ptr;
533 esym = vars->esym_ptr;
535 /* Copy the symbol's name into the string table. */
536 sprintf (vars->string_ptr, "%s%s", prefix, symbol_name);
539 section = (asection_ptr) & bfd_und_section;
541 /* Initialise the external symbol. */
542 H_PUT_32 (vars->abfd, vars->string_ptr - vars->string_table,
544 H_PUT_16 (vars->abfd, section->target_index, esym->e_scnum);
545 esym->e_sclass[0] = sclass;
547 /* The following initialisations are unnecessary - the memory is
548 zero initialised. They are just kept here as reminders. */
550 /* Initialise the internal symbol structure. */
551 ent->u.syment.n_sclass = sclass;
552 ent->u.syment.n_scnum = section->target_index;
553 ent->u.syment._n._n_n._n_offset = (long) sym;
555 sym->symbol.the_bfd = vars->abfd;
556 sym->symbol.name = vars->string_ptr;
557 sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags;
558 sym->symbol.section = section;
561 * vars->table_ptr = vars->sym_index;
562 * vars->sym_ptr_ptr = sym;
564 /* Adjust pointers for the next symbol. */
567 vars->sym_ptr_ptr ++;
571 vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1;
573 BFD_ASSERT (vars->string_ptr < vars->end_string_ptr);
576 /* Create a section. */
579 pe_ILF_make_a_section (pe_ILF_vars * vars,
582 flagword extra_flags)
587 sec = bfd_make_section_old_way (vars->abfd, name);
591 flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY;
593 bfd_set_section_flags (vars->abfd, sec, flags | extra_flags);
595 bfd_set_section_alignment (vars->abfd, sec, 2);
597 /* Check that we will not run out of space. */
598 BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size);
600 /* Set the section size and contents. The actual
601 contents are filled in by our parent. */
602 bfd_set_section_size (vars->abfd, sec, (bfd_size_type) size);
603 sec->contents = vars->data;
604 sec->target_index = vars->sec_index ++;
606 /* Advance data pointer in the vars structure. */
609 /* Skip the padding byte if it was not needed.
610 The logic here is that if the string length is odd,
611 then the entire string length, including the null byte,
612 is even and so the extra, padding byte, is not needed. */
616 /* Create a coff_section_tdata structure for our use. */
617 sec->used_by_bfd = (struct coff_section_tdata *) vars->data;
618 vars->data += sizeof (struct coff_section_tdata);
620 BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size);
622 /* Create a symbol to refer to this section. */
623 pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL);
625 /* Cache the index to the symbol in the coff_section_data structure. */
626 coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1;
631 /* This structure contains the code that goes into the .text section
632 in order to perform a jump into the DLL lookup table. The entries
633 in the table are index by the magic number used to represent the
634 machine type in the PE file. The contents of the data[] arrays in
635 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
636 The SIZE field says how many bytes in the DATA array are actually
637 used. The OFFSET field says where in the data array the address
638 of the .idata$5 section should be placed. */
639 #define MAX_TEXT_SECTION_SIZE 32
643 unsigned short magic;
644 unsigned char data[MAX_TEXT_SECTION_SIZE];
650 static jump_table jtab[] =
654 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
660 { MC68MAGIC, { /* XXX fill me in */ }, 0, 0 },
662 #ifdef MIPS_ARCH_MAGIC_WINCE
663 { MIPS_ARCH_MAGIC_WINCE,
664 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
665 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
670 #ifdef SH_ARCH_MAGIC_WINCE
671 { SH_ARCH_MAGIC_WINCE,
672 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
673 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
680 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
681 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
688 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
689 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
697 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
700 /* Build a full BFD from the information supplied in a ILF object. */
703 pe_ILF_build_a_bfd (bfd * abfd,
707 unsigned int ordinal,
712 struct internal_filehdr internal_f;
713 unsigned int import_type;
714 unsigned int import_name_type;
715 asection_ptr id4, id5, id6 = NULL, text = NULL;
716 coff_symbol_type ** imp_sym;
717 unsigned int imp_index;
719 /* Decode and verify the types field of the ILF structure. */
720 import_type = types & 0x3;
721 import_name_type = (types & 0x1c) >> 2;
730 /* XXX code yet to be written. */
731 _bfd_error_handler (_("%B: Unhandled import type; %x"),
736 _bfd_error_handler (_("%B: Unrecognised import type; %x"),
741 switch (import_name_type)
745 case IMPORT_NAME_NOPREFIX:
746 case IMPORT_NAME_UNDECORATE:
750 _bfd_error_handler (_("%B: Unrecognised import name type; %x"),
751 abfd, import_name_type);
755 /* Initialise local variables.
757 Note these are kept in a structure rather than being
758 declared as statics since bfd frowns on global variables.
760 We are going to construct the contents of the BFD in memory,
761 so allocate all the space that we will need right now. */
762 ptr = bfd_zalloc (abfd, (bfd_size_type) ILF_DATA_SIZE);
766 /* Create a bfd_in_memory structure. */
767 vars.bim = (struct bfd_in_memory *) ptr;
768 vars.bim->buffer = ptr;
769 vars.bim->size = ILF_DATA_SIZE;
770 ptr += sizeof (* vars.bim);
772 /* Initialise the pointers to regions of the memory and the
773 other contents of the pe_ILF_vars structure as well. */
774 vars.sym_cache = (coff_symbol_type *) ptr;
775 vars.sym_ptr = (coff_symbol_type *) ptr;
777 ptr += SIZEOF_ILF_SYMS;
779 vars.sym_table = (unsigned int *) ptr;
780 vars.table_ptr = (unsigned int *) ptr;
781 ptr += SIZEOF_ILF_SYM_TABLE;
783 vars.native_syms = (combined_entry_type *) ptr;
784 vars.native_ptr = (combined_entry_type *) ptr;
785 ptr += SIZEOF_ILF_NATIVE_SYMS;
787 vars.sym_ptr_table = (coff_symbol_type **) ptr;
788 vars.sym_ptr_ptr = (coff_symbol_type **) ptr;
789 ptr += SIZEOF_ILF_SYM_PTR_TABLE;
791 vars.esym_table = (SYMENT *) ptr;
792 vars.esym_ptr = (SYMENT *) ptr;
793 ptr += SIZEOF_ILF_EXT_SYMS;
795 vars.reltab = (arelent *) ptr;
797 ptr += SIZEOF_ILF_RELOCS;
799 vars.int_reltab = (struct internal_reloc *) ptr;
800 ptr += SIZEOF_ILF_INT_RELOCS;
802 vars.string_table = (char *) ptr;
803 vars.string_ptr = (char *) ptr + STRING_SIZE_SIZE;
804 ptr += SIZEOF_ILF_STRINGS;
805 vars.end_string_ptr = (char *) ptr;
807 /* The remaining space in bim->buffer is used
808 by the pe_ILF_make_a_section() function. */
814 /* Create the initial .idata$<n> sections:
815 [.idata$2: Import Directory Table -- not needed]
816 .idata$4: Import Lookup Table
817 .idata$5: Import Address Table
819 Note we do not create a .idata$3 section as this is
820 created for us by the linker script. */
821 id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0);
822 id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0);
823 if (id4 == NULL || id5 == NULL)
826 /* Fill in the contents of these sections. */
827 if (import_name_type == IMPORT_ORDINAL)
830 /* XXX - treat as IMPORT_NAME ??? */
833 * (unsigned int *) id4->contents = ordinal | 0x80000000;
834 * (unsigned int *) id5->contents = ordinal | 0x80000000;
841 /* Create .idata$6 - the Hint Name Table. */
842 id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0);
846 /* If necessary, trim the import symbol name. */
847 symbol = symbol_name;
849 /* As used by MS compiler, '_', '@', and '?' are alternative
850 forms of USER_LABEL_PREFIX, with '?' for c++ mangled names,
851 '@' used for fastcall (in C), '_' everywhere else. Only one
852 of these is used for a symbol. We strip this leading char for
853 IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the
854 PE COFF 6.0 spec (section 8.3, Import Name Type). */
856 if (import_name_type != IMPORT_NAME)
859 if (c == '_' || c == '@' || c == '?')
863 len = strlen (symbol);
864 if (import_name_type == IMPORT_NAME_UNDECORATE)
866 /* Truncate at the first '@'. */
867 char *at = strchr (symbol, '@');
873 id6->contents[0] = ordinal & 0xff;
874 id6->contents[1] = ordinal >> 8;
876 memcpy ((char *) id6->contents + 2, symbol, len);
877 id6->contents[len + 2] = '\0';
880 if (import_name_type != IMPORT_ORDINAL)
882 pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
883 pe_ILF_save_relocs (&vars, id4);
885 pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
886 pe_ILF_save_relocs (&vars, id5);
889 /* Create extra sections depending upon the type of import we are dealing with. */
895 /* Create a .text section.
896 First we need to look up its contents in the jump table. */
897 for (i = NUM_ENTRIES (jtab); i--;)
899 if (jtab[i].size == 0)
901 if (jtab[i].magic == magic)
904 /* If we did not find a matching entry something is wrong. */
908 /* Create the .text section. */
909 text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE);
913 /* Copy in the jump code. */
914 memcpy (text->contents, jtab[i].data, jtab[i].size);
916 /* Create an import symbol. */
917 pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0);
918 imp_sym = vars.sym_ptr_ptr - 1;
919 imp_index = vars.sym_index - 1;
921 /* Create a reloc for the data in the text section. */
922 #ifdef MIPS_ARCH_MAGIC_WINCE
923 if (magic == MIPS_ARCH_MAGIC_WINCE)
925 pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 0, BFD_RELOC_HI16_S,
926 (struct bfd_symbol **) imp_sym,
928 pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_LO16, text);
929 pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 4, BFD_RELOC_LO16,
930 (struct bfd_symbol **) imp_sym,
935 pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset,
936 BFD_RELOC_32, (asymbol **) imp_sym,
939 pe_ILF_save_relocs (& vars, text);
946 /* XXX code not yet written. */
950 /* Initialise the bfd. */
951 memset (& internal_f, 0, sizeof (internal_f));
953 internal_f.f_magic = magic;
954 internal_f.f_symptr = 0;
955 internal_f.f_nsyms = 0;
956 internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */
958 if ( ! bfd_set_start_address (abfd, (bfd_vma) 0)
959 || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f))
962 if (bfd_coff_mkobject_hook (abfd, (void *) & internal_f, NULL) == NULL)
965 coff_data (abfd)->pe = 1;
967 if (vars.magic == THUMBPEMAGIC)
968 /* Stop some linker warnings about thumb code not supporting interworking. */
969 coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET;
972 /* Switch from file contents to memory contents. */
973 bfd_cache_close (abfd);
975 abfd->iostream = (void *) vars.bim;
976 abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */;
978 obj_sym_filepos (abfd) = 0;
980 /* Now create a symbol describing the imported value. */
984 pe_ILF_make_a_symbol (& vars, "", symbol_name, text,
985 BSF_NOT_AT_END | BSF_FUNCTION);
987 /* Create an import symbol for the DLL, without the
989 ptr = (bfd_byte *) strrchr (source_dll, '.');
992 pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0);
998 /* Nothing to do here. */
1002 /* XXX code not yet written. */
1006 /* Point the bfd at the symbol table. */
1007 obj_symbols (abfd) = vars.sym_cache;
1008 bfd_get_symcount (abfd) = vars.sym_index;
1010 obj_raw_syments (abfd) = vars.native_syms;
1011 obj_raw_syment_count (abfd) = vars.sym_index;
1013 obj_coff_external_syms (abfd) = (void *) vars.esym_table;
1014 obj_coff_keep_syms (abfd) = TRUE;
1016 obj_convert (abfd) = vars.sym_table;
1017 obj_conv_table_size (abfd) = vars.sym_index;
1019 obj_coff_strings (abfd) = vars.string_table;
1020 obj_coff_keep_strings (abfd) = TRUE;
1022 abfd->flags |= HAS_SYMS;
1027 /* We have detected a Image Library Format archive element.
1028 Decode the element and return the appropriate target. */
1030 static const bfd_target *
1031 pe_ILF_object_p (bfd * abfd)
1033 bfd_byte buffer[16];
1037 unsigned int machine;
1039 unsigned int ordinal;
1043 /* Upon entry the first four buyes of the ILF header have
1044 already been read. Now read the rest of the header. */
1045 if (bfd_bread (buffer, (bfd_size_type) 16, abfd) != 16)
1050 /* We do not bother to check the version number.
1051 version = H_GET_16 (abfd, ptr); */
1054 machine = H_GET_16 (abfd, ptr);
1057 /* Check that the machine type is recognised. */
1062 case IMAGE_FILE_MACHINE_UNKNOWN:
1063 case IMAGE_FILE_MACHINE_ALPHA:
1064 case IMAGE_FILE_MACHINE_ALPHA64:
1065 case IMAGE_FILE_MACHINE_IA64:
1068 case IMAGE_FILE_MACHINE_I386:
1074 case IMAGE_FILE_MACHINE_M68K:
1080 case IMAGE_FILE_MACHINE_R3000:
1081 case IMAGE_FILE_MACHINE_R4000:
1082 case IMAGE_FILE_MACHINE_R10000:
1084 case IMAGE_FILE_MACHINE_MIPS16:
1085 case IMAGE_FILE_MACHINE_MIPSFPU:
1086 case IMAGE_FILE_MACHINE_MIPSFPU16:
1087 #ifdef MIPS_ARCH_MAGIC_WINCE
1088 magic = MIPS_ARCH_MAGIC_WINCE;
1092 case IMAGE_FILE_MACHINE_SH3:
1093 case IMAGE_FILE_MACHINE_SH4:
1094 #ifdef SH_ARCH_MAGIC_WINCE
1095 magic = SH_ARCH_MAGIC_WINCE;
1099 case IMAGE_FILE_MACHINE_ARM:
1105 case IMAGE_FILE_MACHINE_THUMB:
1108 extern const bfd_target TARGET_LITTLE_SYM;
1110 if (abfd->xvec == & TARGET_LITTLE_SYM)
1111 magic = THUMBPEMAGIC;
1116 case IMAGE_FILE_MACHINE_POWERPC:
1117 /* We no longer support PowerPC. */
1120 (_("%B: Unrecognised machine type (0x%x)"
1121 " in Import Library Format archive"),
1123 bfd_set_error (bfd_error_malformed_archive);
1132 (_("%B: Recognised but unhandled machine type (0x%x)"
1133 " in Import Library Format archive"),
1135 bfd_set_error (bfd_error_wrong_format);
1140 /* We do not bother to check the date.
1141 date = H_GET_32 (abfd, ptr); */
1144 size = H_GET_32 (abfd, ptr);
1150 (_("%B: size field is zero in Import Library Format header"), abfd);
1151 bfd_set_error (bfd_error_malformed_archive);
1156 ordinal = H_GET_16 (abfd, ptr);
1159 types = H_GET_16 (abfd, ptr);
1162 /* Now read in the two strings that follow. */
1163 ptr = bfd_alloc (abfd, size);
1167 if (bfd_bread (ptr, size, abfd) != size)
1169 bfd_release (abfd, ptr);
1173 symbol_name = (char *) ptr;
1174 source_dll = symbol_name + strlen (symbol_name) + 1;
1176 /* Verify that the strings are null terminated. */
1177 if (ptr[size - 1] != 0
1178 || (bfd_size_type) ((bfd_byte *) source_dll - ptr) >= size)
1181 (_("%B: string not null terminated in ILF object file."), abfd);
1182 bfd_set_error (bfd_error_malformed_archive);
1183 bfd_release (abfd, ptr);
1187 /* Now construct the bfd. */
1188 if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name,
1189 source_dll, ordinal, types))
1191 bfd_release (abfd, ptr);
1198 static const bfd_target *
1199 pe_bfd_object_p (bfd * abfd)
1202 struct external_PEI_DOS_hdr dos_hdr;
1203 struct external_PEI_IMAGE_hdr image_hdr;
1206 /* Detect if this a Microsoft Import Library Format element. */
1207 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
1208 || bfd_bread (buffer, (bfd_size_type) 4, abfd) != 4)
1210 if (bfd_get_error () != bfd_error_system_call)
1211 bfd_set_error (bfd_error_wrong_format);
1215 if (H_GET_32 (abfd, buffer) == 0xffff0000)
1216 return pe_ILF_object_p (abfd);
1218 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
1219 || bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd)
1220 != sizeof (dos_hdr))
1222 if (bfd_get_error () != bfd_error_system_call)
1223 bfd_set_error (bfd_error_wrong_format);
1227 /* There are really two magic numbers involved; the magic number
1228 that says this is a NT executable (PEI) and the magic number that
1229 determines the architecture. The former is DOSMAGIC, stored in
1230 the e_magic field. The latter is stored in the f_magic field.
1231 If the NT magic number isn't valid, the architecture magic number
1232 could be mimicked by some other field (specifically, the number
1233 of relocs in section 3). Since this routine can only be called
1234 correctly for a PEI file, check the e_magic number here, and, if
1235 it doesn't match, clobber the f_magic number so that we don't get
1237 if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC)
1239 bfd_set_error (bfd_error_wrong_format);
1243 offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
1244 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1245 || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd)
1246 != sizeof (image_hdr)))
1248 if (bfd_get_error () != bfd_error_system_call)
1249 bfd_set_error (bfd_error_wrong_format);
1253 if (H_GET_32 (abfd, image_hdr.nt_signature) != 0x4550)
1255 bfd_set_error (bfd_error_wrong_format);
1259 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1260 pick up the COFF header for PE, see "struct external_PEI_filehdr"
1261 in include/coff/pe.h. We adjust so that that will work. */
1262 if (bfd_seek (abfd, (file_ptr) (offset - sizeof (dos_hdr)), SEEK_SET) != 0)
1264 if (bfd_get_error () != bfd_error_system_call)
1265 bfd_set_error (bfd_error_wrong_format);
1269 return coff_object_p (abfd);
1272 #define coff_object_p pe_bfd_object_p
1273 #endif /* COFF_IMAGE_WITH_PE */