1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Written by Cygnus Solutions.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 Most of this hacked by Steve Chamberlain,
26 PE/PEI rearrangement (and code added): Donn Terry
30 /* Hey look, some documentation [and in a place you expect to find it]!
32 The main reference for the pei format is "Microsoft Portable Executable
33 and Common Object File Format Specification 4.1". Get it if you need to
34 do some serious hacking on this code.
37 "Peering Inside the PE: A Tour of the Win32 Portable Executable
38 File Format", MSJ 1994, Volume 9.
40 The *sole* difference between the pe format and the pei format is that the
41 latter has an MSDOS 2.0 .exe header on the front that prints the message
42 "This app must be run under Windows." (or some such).
43 (FIXME: Whether that statement is *really* true or not is unknown.
44 Are there more subtle differences between pe and pei formats?
45 For now assume there aren't. If you find one, then for God sakes
48 The Microsoft docs use the word "image" instead of "executable" because
49 the former can also refer to a DLL (shared library). Confusion can arise
50 because the `i' in `pei' also refers to "image". The `pe' format can
51 also create images (i.e. executables), it's just that to run on a win32
52 system you need to use the pei format.
54 FIXME: Please add more docs here so the next poor fool that has to hack
55 on this code has a chance of getting something accomplished without
56 wasting too much time.
61 static boolean (*pe_saved_coff_bfd_print_private_bfd_data)
62 PARAMS ((bfd *, PTR)) =
63 #ifndef coff_bfd_print_private_bfd_data
66 coff_bfd_print_private_bfd_data;
67 #undef coff_bfd_print_private_bfd_data
70 static boolean pe_print_private_bfd_data PARAMS ((bfd *, PTR));
71 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
73 static boolean (*pe_saved_coff_bfd_copy_private_bfd_data)
74 PARAMS ((bfd *, bfd *)) =
75 #ifndef coff_bfd_copy_private_bfd_data
78 coff_bfd_copy_private_bfd_data;
79 #undef coff_bfd_copy_private_bfd_data
82 static boolean pe_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
83 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
85 #define coff_mkobject pe_mkobject
86 #define coff_mkobject_hook pe_mkobject_hook
88 #ifndef NO_COFF_RELOCS
89 static void coff_swap_reloc_in PARAMS ((bfd *, PTR, PTR));
90 static unsigned int coff_swap_reloc_out PARAMS ((bfd *, PTR, PTR));
92 static void coff_swap_filehdr_in PARAMS ((bfd *, PTR, PTR));
93 static void coff_swap_scnhdr_in PARAMS ((bfd *, PTR, PTR));
94 static boolean pe_mkobject PARAMS ((bfd *));
95 static PTR pe_mkobject_hook PARAMS ((bfd *, PTR, PTR));
97 #ifdef COFF_IMAGE_WITH_PE
98 /* This structure contains static variables used by the ILF code. */
99 typedef asection * asection_ptr;
105 struct bfd_in_memory * bim;
106 unsigned short magic;
109 unsigned int relcount;
111 coff_symbol_type * sym_cache;
112 coff_symbol_type * sym_ptr;
113 unsigned int sym_index;
115 unsigned int * sym_table;
116 unsigned int * table_ptr;
118 combined_entry_type * native_syms;
119 combined_entry_type * native_ptr;
121 coff_symbol_type ** sym_ptr_table;
122 coff_symbol_type ** sym_ptr_ptr;
124 unsigned int sec_index;
128 char * end_string_ptr;
133 struct internal_reloc * int_reltab;
137 static asection_ptr pe_ILF_make_a_section PARAMS ((pe_ILF_vars *, const char *, unsigned int, flagword));
138 static void pe_ILF_make_a_reloc PARAMS ((pe_ILF_vars *, bfd_vma, bfd_reloc_code_real_type, asection_ptr));
139 static void pe_ILF_make_a_symbol PARAMS ((pe_ILF_vars *, const char *, const char *, asection_ptr, flagword));
140 static void pe_ILF_save_relocs PARAMS ((pe_ILF_vars *, asection_ptr));
141 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));
142 static boolean pe_ILF_build_a_bfd PARAMS ((bfd *, unsigned short, bfd_byte *, bfd_byte *, unsigned int, unsigned int));
143 static const bfd_target * pe_ILF_object_p PARAMS ((bfd *));
144 static const bfd_target * pe_bfd_object_p PARAMS ((bfd *));
145 #endif /* COFF_IMAGE_WITH_PE */
147 /**********************************************************************/
149 #ifndef NO_COFF_RELOCS
151 coff_swap_reloc_in (abfd, src, dst)
156 RELOC *reloc_src = (RELOC *) src;
157 struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
159 reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
160 reloc_dst->r_symndx = bfd_h_get_signed_32(abfd, (bfd_byte *) reloc_src->r_symndx);
162 reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
164 #ifdef SWAP_IN_RELOC_OFFSET
165 reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
166 (bfd_byte *) reloc_src->r_offset);
171 coff_swap_reloc_out (abfd, src, dst)
176 struct internal_reloc *reloc_src = (struct internal_reloc *)src;
177 struct external_reloc *reloc_dst = (struct external_reloc *)dst;
178 bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
179 bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
181 bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
184 #ifdef SWAP_OUT_RELOC_OFFSET
185 SWAP_OUT_RELOC_OFFSET(abfd,
187 (bfd_byte *) reloc_dst->r_offset);
189 #ifdef SWAP_OUT_RELOC_EXTRA
190 SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
194 #endif /* not NO_COFF_RELOCS */
197 coff_swap_filehdr_in (abfd, src, dst)
202 FILHDR *filehdr_src = (FILHDR *) src;
203 struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
204 filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
205 filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
206 filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
208 filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
209 filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
210 filehdr_dst->f_symptr = bfd_h_get_32 (abfd, (bfd_byte *) filehdr_src->f_symptr);
212 /* Other people's tools sometimes generate headers with an nsyms but
214 if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0)
216 filehdr_dst->f_nsyms = 0;
217 filehdr_dst->f_flags |= F_LSYMS;
220 filehdr_dst->f_opthdr = bfd_h_get_16(abfd,
221 (bfd_byte *)filehdr_src-> f_opthdr);
224 #ifdef COFF_IMAGE_WITH_PE
225 # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
227 # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
231 coff_swap_scnhdr_in (abfd, ext, in)
236 SCNHDR *scnhdr_ext = (SCNHDR *) ext;
237 struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
239 memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name));
240 scnhdr_int->s_vaddr =
241 GET_SCNHDR_VADDR (abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
242 scnhdr_int->s_paddr =
243 GET_SCNHDR_PADDR (abfd, (bfd_byte *) scnhdr_ext->s_paddr);
245 GET_SCNHDR_SIZE (abfd, (bfd_byte *) scnhdr_ext->s_size);
246 scnhdr_int->s_scnptr =
247 GET_SCNHDR_SCNPTR (abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
248 scnhdr_int->s_relptr =
249 GET_SCNHDR_RELPTR (abfd, (bfd_byte *) scnhdr_ext->s_relptr);
250 scnhdr_int->s_lnnoptr =
251 GET_SCNHDR_LNNOPTR (abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
252 scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
254 /* MS handles overflow of line numbers by carrying into the reloc
255 field (it appears). Since it's supposed to be zero for PE
256 *IMAGE* format, that's safe. This is still a bit iffy. */
257 #ifdef COFF_IMAGE_WITH_PE
258 scnhdr_int->s_nlnno =
259 (bfd_h_get_16 (abfd, (bfd_byte *) scnhdr_ext->s_nlnno)
260 + (bfd_h_get_16 (abfd, (bfd_byte *) scnhdr_ext->s_nreloc) << 16));
261 scnhdr_int->s_nreloc = 0;
263 scnhdr_int->s_nreloc = bfd_h_get_16 (abfd,
264 (bfd_byte *) scnhdr_ext->s_nreloc);
265 scnhdr_int->s_nlnno = bfd_h_get_16 (abfd,
266 (bfd_byte *) scnhdr_ext->s_nlnno);
269 if (scnhdr_int->s_vaddr != 0)
271 scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase;
272 scnhdr_int->s_vaddr &= 0xffffffff;
275 #ifndef COFF_NO_HACK_SCNHDR_SIZE
276 /* If this section holds uninitialized data, use the virtual size
277 (stored in s_paddr) instead of the physical size. */
278 if ((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0)
280 scnhdr_int->s_size = scnhdr_int->s_paddr;
281 /* This code used to set scnhdr_int->s_paddr to 0. However,
282 coff_set_alignment_hook stores s_paddr in virt_size, which
283 only works if it correctly holds the virtual size of the
294 abfd->tdata.pe_obj_data =
295 (struct pe_tdata *) bfd_zalloc (abfd, sizeof (pe_data_type));
297 if (abfd->tdata.pe_obj_data == 0)
304 /* in_reloc_p is architecture dependent. */
305 pe->in_reloc_p = in_reloc_p;
307 #ifdef PEI_FORCE_MINIMUM_ALIGNMENT
308 pe->force_minimum_alignment = 1;
310 #ifdef PEI_TARGET_SUBSYSTEM
311 pe->target_subsystem = PEI_TARGET_SUBSYSTEM;
317 /* Create the COFF backend specific information. */
319 pe_mkobject_hook (abfd, filehdr, aouthdr)
322 PTR aouthdr ATTRIBUTE_UNUSED;
324 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
327 if (pe_mkobject (abfd) == false)
331 pe->coff.sym_filepos = internal_f->f_symptr;
332 /* These members communicate important constants about the symbol
333 table to GDB's symbol-reading code. These `constants'
334 unfortunately vary among coff implementations... */
335 pe->coff.local_n_btmask = N_BTMASK;
336 pe->coff.local_n_btshft = N_BTSHFT;
337 pe->coff.local_n_tmask = N_TMASK;
338 pe->coff.local_n_tshift = N_TSHIFT;
339 pe->coff.local_symesz = SYMESZ;
340 pe->coff.local_auxesz = AUXESZ;
341 pe->coff.local_linesz = LINESZ;
343 pe->coff.timestamp = internal_f->f_timdat;
345 obj_raw_syment_count (abfd) =
346 obj_conv_table_size (abfd) =
349 pe->real_flags = internal_f->f_flags;
351 if ((internal_f->f_flags & F_DLL) != 0)
354 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
355 abfd->flags |= HAS_DEBUG;
357 #ifdef COFF_IMAGE_WITH_PE
359 pe->pe_opthdr = ((struct internal_aouthdr *)aouthdr)->pe;
363 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
364 coff_data (abfd) ->flags = 0;
371 pe_print_private_bfd_data (abfd, vfile)
375 FILE *file = (FILE *) vfile;
377 if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile))
380 if (pe_saved_coff_bfd_print_private_bfd_data != NULL)
384 return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile);
390 /* Copy any private info we understand from the input bfd
391 to the output bfd. */
394 pe_bfd_copy_private_bfd_data (ibfd, obfd)
397 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd))
400 if (pe_saved_coff_bfd_copy_private_bfd_data)
401 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd);
406 #define coff_bfd_copy_private_section_data \
407 _bfd_XX_bfd_copy_private_section_data
409 #define coff_get_symbol_info _bfd_XX_get_symbol_info
411 #ifdef COFF_IMAGE_WITH_PE
413 /* Code to handle Microsoft's Image Library Format.
414 Also known as LINK6 format.
415 Documentation about this format can be found at:
417 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
419 /* The following constants specify the sizes of the various data
420 structures that we have to create in order to build a bfd describing
421 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
422 and SIZEOF_IDATA7 below is to allow for the possibility that we might
423 need a padding byte in order to ensure 16 bit alignment for the section's
426 The value for SIZEOF_ILF_STRINGS is computed as follows:
428 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
429 per symbol for their names (longest section name is .idata$x).
431 There will be two symbols for the imported value, one the symbol name
432 and one with _imp__ prefixed. Allowing for the terminating nul's this
433 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
435 The strings in the string table must start STRING__SIZE_SIZE bytes into
436 the table in order to for the string lookup code in coffgen/coffcode to
438 #define NUM_ILF_RELOCS 8
439 #define NUM_ILF_SECTIONS 6
440 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
442 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
443 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
444 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
445 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
446 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
447 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
448 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
449 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
450 + 21 + strlen (source_dll) \
451 + NUM_ILF_SECTIONS * 9 \
453 #define SIZEOF_IDATA2 (5 * 4)
454 #define SIZEOF_IDATA4 (1 * 4)
455 #define SIZEOF_IDATA5 (1 * 4)
456 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
457 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
458 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
460 #define ILF_DATA_SIZE \
461 sizeof (* vars.bim) \
463 + SIZEOF_ILF_SYM_TABLE \
464 + SIZEOF_ILF_NATIVE_SYMS \
465 + SIZEOF_ILF_SYM_PTR_TABLE \
466 + SIZEOF_ILF_EXT_SYMS \
467 + SIZEOF_ILF_RELOCS \
468 + SIZEOF_ILF_INT_RELOCS \
469 + SIZEOF_ILF_STRINGS \
475 + SIZEOF_ILF_SECTIONS \
476 + MAX_TEXT_SECTION_SIZE
478 /* Create an empty relocation against the given symbol. */
480 pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars,
482 bfd_reloc_code_real_type reloc,
483 struct symbol_cache_entry ** sym,
484 unsigned int sym_index)
487 struct internal_reloc * internal;
489 entry = vars->reltab + vars->relcount;
490 internal = vars->int_reltab + vars->relcount;
492 entry->address = address;
494 entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc);
495 entry->sym_ptr_ptr = sym;
497 internal->r_vaddr = address;
498 internal->r_symndx = sym_index;
499 internal->r_type = entry->howto->type;
500 #if 0 /* These fields do not need to be initialised. */
501 internal->r_size = 0;
502 internal->r_extern = 0;
503 internal->r_offset = 0;
508 BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS);
511 /* Create an empty relocation against the given section. */
513 pe_ILF_make_a_reloc (pe_ILF_vars * vars,
515 bfd_reloc_code_real_type reloc,
518 pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr,
519 coff_section_data (vars->abfd, sec)->i);
522 /* Move the queued relocs into the given section. */
524 pe_ILF_save_relocs (pe_ILF_vars * vars,
527 /* Make sure that there is somewhere to store the internal relocs. */
528 if (coff_section_data (vars->abfd, sec) == NULL)
529 /* We should probably return an error indication here. */
532 coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab;
533 coff_section_data (vars->abfd, sec)->keep_relocs = true;
535 sec->relocation = vars->reltab;
536 sec->reloc_count = vars->relcount;
537 sec->flags |= SEC_RELOC;
539 vars->reltab += vars->relcount;
540 vars->int_reltab += vars->relcount;
543 BFD_ASSERT ((bfd_byte *)vars->int_reltab < (bfd_byte *)vars->string_table);
546 /* Create a global symbol and add it to the relevant tables. */
548 pe_ILF_make_a_symbol (pe_ILF_vars * vars,
550 const char * symbol_name,
551 asection_ptr section,
552 flagword extra_flags)
554 coff_symbol_type * sym;
555 combined_entry_type * ent;
557 unsigned short sclass;
559 if (extra_flags & BSF_LOCAL)
565 if (vars->magic == THUMBPEMAGIC)
567 if (extra_flags & BSF_FUNCTION)
568 sclass = C_THUMBEXTFUNC;
569 else if (extra_flags & BSF_LOCAL)
570 sclass = C_THUMBSTAT;
576 BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS);
579 ent = vars->native_ptr;
580 esym = vars->esym_ptr;
582 /* Copy the symbol's name into the string table. */
583 sprintf (vars->string_ptr, "%s%s", prefix, symbol_name);
586 section = (asection_ptr) & bfd_und_section;
588 /* Initialise the external symbol. */
589 bfd_h_put_32 (vars->abfd, vars->string_ptr - vars->string_table, (bfd_byte *) esym->e.e.e_offset);
590 bfd_h_put_16 (vars->abfd, section->target_index, (bfd_byte *) esym->e_scnum);
591 esym->e_sclass[0] = sclass;
593 /* The following initialisations are unnecessary - the memory is
594 zero initialised. They are just kept here as reminders. */
596 esym->e.e.e_zeroes = 0;
598 esym->e_type = T_NULL;
602 /* Initialise the internal symbol structure. */
603 ent->u.syment.n_sclass = sclass;
604 ent->u.syment.n_scnum = section->target_index;
605 ent->u.syment._n._n_n._n_offset = (long) sym;
607 #if 0 /* See comment above. */
608 ent->u.syment.n_value = 0;
609 ent->u.syment.n_flags = 0;
610 ent->u.syment.n_type = T_NULL;
611 ent->u.syment.n_numaux = 0;
615 sym->symbol.the_bfd = vars->abfd;
616 sym->symbol.name = vars->string_ptr;
617 sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags;
618 sym->symbol.section = section;
621 #if 0 /* See comment above. */
622 sym->symbol.value = 0;
623 sym->symbol.udata.i = 0;
624 sym->done_lineno = false;
628 * vars->table_ptr = vars->sym_index;
629 * vars->sym_ptr_ptr = sym;
631 /* Adjust pointers for the next symbol. */
634 vars->sym_ptr_ptr ++;
638 vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1;
640 BFD_ASSERT (vars->string_ptr < vars->end_string_ptr);
643 /* Create a section. */
645 pe_ILF_make_a_section (pe_ILF_vars * vars,
648 flagword extra_flags)
653 sec = bfd_make_section_old_way (vars->abfd, name);
657 flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY;
659 bfd_set_section_flags (vars->abfd, sec, flags | extra_flags);
661 bfd_set_section_alignment (vars->abfd, sec, 2);
663 /* Check that we will not run out of space. */
664 BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size);
666 /* Set the section size and contents. The actual
667 contents are filled in by our parent. */
668 bfd_set_section_size (vars->abfd, sec, size);
669 sec->contents = vars->data;
670 sec->target_index = vars->sec_index ++;
672 /* Advance data pointer in the vars structure. */
675 /* Skip the padding byte if it was not needed.
676 The logic here is that if the string length is odd,
677 then the entire string length, including the null byte,
678 is even and so the extra, padding byte, is not needed. */
682 /* Create a coff_section_tdata structure for our use. */
683 sec->used_by_bfd = (struct coff_section_tdata *) vars->data;
684 vars->data += sizeof (struct coff_section_tdata);
686 BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size);
688 /* Create a symbol to refer to this section. */
689 pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL);
691 /* Cache the index to the symbol in the coff_section_data structure. */
692 coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1;
697 /* This structure contains the code that goes into the .text section
698 in order to perform a jump into the DLL lookup table. The entries
699 in the table are index by the magic number used to represent the
700 machine type in the PE file. The contents of the data[] arrays in
701 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
702 The SIZE field says how many bytes in the DATA array are actually
703 used. The OFFSET field says where in the data array the address
704 of the .idata$5 section should be placed. */
705 #define MAX_TEXT_SECTION_SIZE 32
709 unsigned short magic;
710 unsigned char data[MAX_TEXT_SECTION_SIZE];
716 static jump_table jtab[] =
720 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
726 { MC68MAGIC, { /* XXX fill me in */ }, 0, 0 },
728 #ifdef MIPS_ARCH_MAGIC_WINCE
729 { MIPS_ARCH_MAGIC_WINCE,
730 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
731 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
736 #ifdef SH_ARCH_MAGIC_WINCE
737 { SH_ARCH_MAGIC_WINCE,
738 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
739 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
746 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
747 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
754 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
755 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
763 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
766 /* Build a full BFD from the information supplied in a ILF object. */
768 pe_ILF_build_a_bfd (bfd * abfd,
769 unsigned short magic,
770 bfd_byte * symbol_name,
771 bfd_byte * source_dll,
772 unsigned int ordinal,
777 struct internal_filehdr internal_f;
778 unsigned int import_type;
779 unsigned int import_name_type;
780 asection_ptr id4, id5, id6 = NULL, text = NULL;
781 coff_symbol_type ** imp_sym;
782 unsigned int imp_index;
784 /* Decode and verify the types field of the ILF structure. */
785 import_type = types & 0x3;
786 import_name_type = (types & 0x1c) >> 2;
795 /* XXX code yet to be written. */
796 _bfd_error_handler (_("%s: Unhandled import type; %x"),
797 bfd_get_filename (abfd), import_type);
801 _bfd_error_handler (_("%s: Unrecognised import type; %x"),
802 bfd_get_filename (abfd), import_type);
806 switch (import_name_type)
810 case IMPORT_NAME_NOPREFIX:
811 case IMPORT_NAME_UNDECORATE:
815 _bfd_error_handler (_("%s: Unrecognised import name type; %x"),
816 bfd_get_filename (abfd), import_name_type);
820 /* Initialise local variables.
822 Note these are kept in a structure rather than being
823 declared as statics since bfd frowns on global variables.
825 We are going to construct the contents of the BFD in memory,
826 so allocate all the space that we will need right now. */
827 ptr = bfd_zalloc (abfd, ILF_DATA_SIZE);
831 /* Create a bfd_in_memory structure. */
832 vars.bim = (struct bfd_in_memory *) ptr;
833 vars.bim->buffer = ptr;
834 vars.bim->size = ILF_DATA_SIZE;
835 ptr += sizeof (* vars.bim);
837 /* Initialise the pointers to regions of the memory and the
838 other contents of the pe_ILF_vars structure as well. */
839 vars.sym_cache = (coff_symbol_type *) ptr;
840 vars.sym_ptr = (coff_symbol_type *) ptr;
842 ptr += SIZEOF_ILF_SYMS;
844 vars.sym_table = (unsigned int *) ptr;
845 vars.table_ptr = (unsigned int *) ptr;
846 ptr += SIZEOF_ILF_SYM_TABLE;
848 vars.native_syms = (combined_entry_type *) ptr;
849 vars.native_ptr = (combined_entry_type *) ptr;
850 ptr += SIZEOF_ILF_NATIVE_SYMS;
852 vars.sym_ptr_table = (coff_symbol_type **) ptr;
853 vars.sym_ptr_ptr = (coff_symbol_type **) ptr;
854 ptr += SIZEOF_ILF_SYM_PTR_TABLE;
856 vars.esym_table = (SYMENT *) ptr;
857 vars.esym_ptr = (SYMENT *) ptr;
858 ptr += SIZEOF_ILF_EXT_SYMS;
860 vars.reltab = (arelent *) ptr;
862 ptr += SIZEOF_ILF_RELOCS;
864 vars.int_reltab = (struct internal_reloc *) ptr;
865 ptr += SIZEOF_ILF_INT_RELOCS;
867 vars.string_table = ptr;
868 vars.string_ptr = ptr + STRING_SIZE_SIZE;
869 ptr += SIZEOF_ILF_STRINGS;
870 vars.end_string_ptr = ptr;
872 /* The remaining space in bim->buffer is used
873 by the pe_ILF_make_a_section() function. */
879 /* Create the initial .idata$<n> sections:
880 [.idata$2: Import Directory Table -- not needed]
881 .idata$4: Import Lookup Table
882 .idata$5: Import Address Table
884 Note we do not create a .idata$3 section as this is
885 created for us by the linker script. */
886 id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0);
887 id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0);
888 if (id4 == NULL || id5 == NULL)
891 /* Fill in the contents of these sections. */
892 if (import_name_type == IMPORT_ORDINAL)
895 /* XXX - treat as IMPORT_NAME ??? */
898 * (unsigned int *) id4->contents = ordinal | 0x80000000;
899 * (unsigned int *) id5->contents = ordinal | 0x80000000;
905 /* Create .idata$6 - the Hint Name Table. */
906 id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0);
910 /* If necessary, trim the import symbol name. */
911 symbol = symbol_name;
913 if (import_name_type != IMPORT_NAME)
914 /* Skip any prefix in symbol_name. */
915 while (*symbol == '@' || * symbol == '?' || * symbol == '_')
918 if (import_name_type == IMPORT_NAME_UNDECORATE)
920 /* Truncate at the first '@' */
921 while (* symbol != 0 && * symbol != '@')
927 id6->contents[0] = ordinal & 0xff;
928 id6->contents[1] = ordinal >> 8;
930 strcpy (id6->contents + 2, symbol);
933 if (import_name_type != IMPORT_ORDINAL)
935 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6);
936 pe_ILF_save_relocs (& vars, id4);
938 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6);
939 pe_ILF_save_relocs (& vars, id5);
942 /* Create extra sections depending upon the type of import we are dealing with. */
948 /* Create a .text section.
949 First we need to look up its contents in the jump table. */
950 for (i = NUM_ENTRIES (jtab); i--;)
952 if (jtab[i].size == 0)
954 if (jtab[i].magic == magic)
957 /* If we did not find a matching entry something is wrong. */
961 /* Create the .text section. */
962 text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE);
966 /* Copy in the jump code. */
967 memcpy (text->contents, jtab[i].data, jtab[i].size);
969 /* Create an import symbol. */
970 pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0);
971 imp_sym = vars.sym_ptr_ptr - 1;
972 imp_index = vars.sym_index - 1;
974 /* Create a reloc for the data in the text section. */
975 #ifdef MIPS_ARCH_MAGIC_WINCE
976 if (magic == MIPS_ARCH_MAGIC_WINCE)
978 pe_ILF_make_a_symbol_reloc (& vars, 0, BFD_RELOC_HI16_S,
979 (struct symbol_cache_entry **) imp_sym, imp_index);
980 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_LO16, text);
981 pe_ILF_make_a_symbol_reloc (& vars, 4, BFD_RELOC_LO16,
982 (struct symbol_cache_entry **) imp_sym, imp_index);
986 pe_ILF_make_a_symbol_reloc (& vars, jtab[i].offset, BFD_RELOC_32,
987 (asymbol **) imp_sym, imp_index);
989 pe_ILF_save_relocs (& vars, text);
996 /* XXX code not yet written. */
1000 /* Initialise the bfd. */
1001 memset (& internal_f, 0, sizeof (internal_f));
1003 internal_f.f_magic = magic;
1004 internal_f.f_symptr = 0;
1005 internal_f.f_nsyms = 0;
1006 internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */
1008 if ( ! bfd_set_start_address (abfd, 0)
1009 || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f))
1012 if (bfd_coff_mkobject_hook (abfd, (PTR) & internal_f, NULL) == NULL)
1015 coff_data (abfd)->pe = 1;
1017 if (vars.magic == THUMBPEMAGIC)
1018 /* Stop some linker warnings about thumb code not supporting interworking. */
1019 coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET;
1022 /* Switch from file contents to memory contents. */
1023 bfd_cache_close (abfd);
1025 abfd->iostream = (PTR) vars.bim;
1026 abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */;
1028 obj_sym_filepos (abfd) = 0;
1030 /* Now create a symbol describing the imported value. */
1031 switch (import_type)
1036 pe_ILF_make_a_symbol (& vars, "", symbol_name, text,
1037 BSF_NOT_AT_END | BSF_FUNCTION);
1039 /* Create an import symbol for the DLL, without the
1041 ptr = strrchr (source_dll, '.');
1044 pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0);
1050 /* Nothing to do here. */
1054 /* XXX code not yet written. */
1058 /* Point the bfd at the symbol table. */
1059 obj_symbols (abfd) = vars.sym_cache;
1060 bfd_get_symcount (abfd) = vars.sym_index;
1062 obj_raw_syments (abfd) = vars.native_syms;
1063 obj_raw_syment_count (abfd) = vars.sym_index;
1065 obj_coff_external_syms (abfd) = (PTR) vars.esym_table;
1066 obj_coff_keep_syms (abfd) = true;
1068 obj_convert (abfd) = vars.sym_table;
1069 obj_conv_table_size (abfd) = vars.sym_index;
1071 obj_coff_strings (abfd) = vars.string_table;
1072 obj_coff_keep_strings (abfd) = true;
1074 abfd->flags |= HAS_SYMS;
1079 /* We have detected a Image Library Format archive element.
1080 Decode the element and return the appropriate target. */
1081 static const bfd_target *
1082 pe_ILF_object_p (bfd * abfd)
1084 bfd_byte buffer[16];
1086 bfd_byte * symbol_name;
1087 bfd_byte * source_dll;
1088 unsigned int machine;
1090 unsigned int ordinal;
1092 unsigned short magic;
1094 /* Upon entry the first four buyes of the ILF header have
1095 already been read. Now read the rest of the header. */
1096 if (bfd_read (buffer, 1, 16, abfd) != 16)
1101 /* We do not bother to check the version number.
1102 version = bfd_h_get_16 (abfd, ptr); */
1105 machine = bfd_h_get_16 (abfd, ptr);
1108 /* Check that the machine type is recognised. */
1113 case IMAGE_FILE_MACHINE_UNKNOWN:
1114 case IMAGE_FILE_MACHINE_ALPHA:
1115 case IMAGE_FILE_MACHINE_ALPHA64:
1116 case IMAGE_FILE_MACHINE_IA64:
1119 case IMAGE_FILE_MACHINE_I386:
1125 case IMAGE_FILE_MACHINE_M68K:
1131 case IMAGE_FILE_MACHINE_R3000:
1132 case IMAGE_FILE_MACHINE_R4000:
1133 case IMAGE_FILE_MACHINE_R10000:
1135 case IMAGE_FILE_MACHINE_MIPS16:
1136 case IMAGE_FILE_MACHINE_MIPSFPU:
1137 case IMAGE_FILE_MACHINE_MIPSFPU16:
1138 #ifdef MIPS_ARCH_MAGIC_WINCE
1139 magic = MIPS_ARCH_MAGIC_WINCE;
1143 case IMAGE_FILE_MACHINE_SH3:
1144 case IMAGE_FILE_MACHINE_SH4:
1145 #ifdef SH_ARCH_MAGIC_WINCE
1146 magic = SH_ARCH_MAGIC_WINCE;
1150 case IMAGE_FILE_MACHINE_ARM:
1156 case IMAGE_FILE_MACHINE_THUMB:
1159 extern const bfd_target TARGET_LITTLE_SYM;
1161 if (abfd->xvec == & TARGET_LITTLE_SYM)
1162 magic = THUMBPEMAGIC;
1167 case IMAGE_FILE_MACHINE_POWERPC:
1168 /* We no longer support PowerPC. */
1172 _("%s: Unrecognised machine type (0x%x) in Import Library Format archive"),
1173 bfd_get_filename (abfd), machine);
1174 bfd_set_error (bfd_error_malformed_archive);
1184 _("%s: Recognised but unhandled machine type (0x%x) in Import Library Format archive"),
1185 bfd_get_filename (abfd), machine);
1186 bfd_set_error (bfd_error_wrong_format);
1191 /* We do not bother to check the date.
1192 date = bfd_h_get_32 (abfd, ptr); */
1195 size = bfd_h_get_32 (abfd, ptr);
1201 (_("%s: size field is zero in Import Library Format header"),
1202 bfd_get_filename (abfd));
1203 bfd_set_error (bfd_error_malformed_archive);
1208 ordinal = bfd_h_get_16 (abfd, ptr);
1211 types = bfd_h_get_16 (abfd, ptr);
1214 /* Now read in the two strings that follow. */
1215 ptr = bfd_alloc (abfd, size);
1219 if (bfd_read (ptr, 1, size, abfd) != size)
1223 source_dll = ptr + strlen (ptr) + 1;
1225 /* Verify that the strings are null terminated. */
1226 if (ptr[size - 1] != 0 || ((unsigned long) (source_dll - ptr) >= size))
1229 (_("%s: string not null terminated in ILF object file."),
1230 bfd_get_filename (abfd));
1231 bfd_set_error (bfd_error_malformed_archive);
1236 /* Now construct the bfd. */
1237 if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name,
1238 source_dll, ordinal, types))
1244 static const bfd_target *
1245 pe_bfd_object_p (bfd * abfd)
1248 struct external_PEI_DOS_hdr dos_hdr;
1249 struct external_PEI_IMAGE_hdr image_hdr;
1252 /* Detect if this a Microsoft Import Library Format element. */
1253 if (bfd_seek (abfd, 0x00, SEEK_SET) != 0
1254 || bfd_read (buffer, 1, 4, abfd) != 4)
1256 if (bfd_get_error () != bfd_error_system_call)
1257 bfd_set_error (bfd_error_wrong_format);
1261 if (bfd_h_get_32 (abfd, buffer) == 0xffff0000)
1262 return pe_ILF_object_p (abfd);
1264 if (bfd_seek (abfd, 0x00, SEEK_SET) != 0
1265 || bfd_read (&dos_hdr, 1, sizeof (dos_hdr), abfd)
1266 != sizeof (dos_hdr))
1268 if (bfd_get_error () != bfd_error_system_call)
1269 bfd_set_error (bfd_error_wrong_format);
1273 /* There are really two magic numbers involved; the magic number
1274 that says this is a NT executable (PEI) and the magic number that
1275 determines the architecture. The former is DOSMAGIC, stored in
1276 the e_magic field. The latter is stored in the f_magic field.
1277 If the NT magic number isn't valid, the architecture magic number
1278 could be mimicked by some other field (specifically, the number
1279 of relocs in section 3). Since this routine can only be called
1280 correctly for a PEI file, check the e_magic number here, and, if
1281 it doesn't match, clobber the f_magic number so that we don't get
1283 if (bfd_h_get_16 (abfd, (bfd_byte *) dos_hdr.e_magic) != DOSMAGIC)
1285 bfd_set_error (bfd_error_wrong_format);
1289 offset = bfd_h_get_32 (abfd, (bfd_byte *) dos_hdr.e_lfanew);
1290 if (bfd_seek (abfd, (file_ptr) offset, SEEK_SET) != 0
1291 || bfd_read (&image_hdr, 1, sizeof (image_hdr), abfd)
1292 != sizeof (image_hdr))
1294 if (bfd_get_error () != bfd_error_system_call)
1295 bfd_set_error (bfd_error_wrong_format);
1299 if (bfd_h_get_32 (abfd, (bfd_byte *) image_hdr.nt_signature)
1302 bfd_set_error (bfd_error_wrong_format);
1306 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1307 pick up the COFF header for PE, see "struct external_PEI_filehdr"
1308 in include/coff/pe.h. We adjust so that that will work. */
1310 (file_ptr) (offset - sizeof (dos_hdr)),
1314 if (bfd_get_error () != bfd_error_system_call)
1315 bfd_set_error (bfd_error_wrong_format);
1319 return coff_object_p (abfd);
1322 #define coff_object_p pe_bfd_object_p
1323 #endif /* COFF_IMAGE_WITH_PE */