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
279 && (scnhdr_int->s_paddr > 0))
281 scnhdr_int->s_size = scnhdr_int->s_paddr;
282 /* This code used to set scnhdr_int->s_paddr to 0. However,
283 coff_set_alignment_hook stores s_paddr in virt_size, which
284 only works if it correctly holds the virtual size of the
295 abfd->tdata.pe_obj_data =
296 (struct pe_tdata *) bfd_zalloc (abfd, sizeof (pe_data_type));
298 if (abfd->tdata.pe_obj_data == 0)
305 /* in_reloc_p is architecture dependent. */
306 pe->in_reloc_p = in_reloc_p;
308 #ifdef PEI_FORCE_MINIMUM_ALIGNMENT
309 pe->force_minimum_alignment = 1;
311 #ifdef PEI_TARGET_SUBSYSTEM
312 pe->target_subsystem = PEI_TARGET_SUBSYSTEM;
318 /* Create the COFF backend specific information. */
320 pe_mkobject_hook (abfd, filehdr, aouthdr)
323 PTR aouthdr ATTRIBUTE_UNUSED;
325 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
328 if (pe_mkobject (abfd) == false)
332 pe->coff.sym_filepos = internal_f->f_symptr;
333 /* These members communicate important constants about the symbol
334 table to GDB's symbol-reading code. These `constants'
335 unfortunately vary among coff implementations... */
336 pe->coff.local_n_btmask = N_BTMASK;
337 pe->coff.local_n_btshft = N_BTSHFT;
338 pe->coff.local_n_tmask = N_TMASK;
339 pe->coff.local_n_tshift = N_TSHIFT;
340 pe->coff.local_symesz = SYMESZ;
341 pe->coff.local_auxesz = AUXESZ;
342 pe->coff.local_linesz = LINESZ;
344 pe->coff.timestamp = internal_f->f_timdat;
346 obj_raw_syment_count (abfd) =
347 obj_conv_table_size (abfd) =
350 pe->real_flags = internal_f->f_flags;
352 if ((internal_f->f_flags & F_DLL) != 0)
355 if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
356 abfd->flags |= HAS_DEBUG;
358 #ifdef COFF_IMAGE_WITH_PE
360 pe->pe_opthdr = ((struct internal_aouthdr *)aouthdr)->pe;
364 if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
365 coff_data (abfd) ->flags = 0;
372 pe_print_private_bfd_data (abfd, vfile)
376 FILE *file = (FILE *) vfile;
378 if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile))
381 if (pe_saved_coff_bfd_print_private_bfd_data != NULL)
385 return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile);
391 /* Copy any private info we understand from the input bfd
392 to the output bfd. */
395 pe_bfd_copy_private_bfd_data (ibfd, obfd)
398 if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd))
401 if (pe_saved_coff_bfd_copy_private_bfd_data)
402 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd);
407 #define coff_bfd_copy_private_section_data \
408 _bfd_XX_bfd_copy_private_section_data
410 #define coff_get_symbol_info _bfd_XX_get_symbol_info
412 #ifdef COFF_IMAGE_WITH_PE
414 /* Code to handle Microsoft's Image Library Format.
415 Also known as LINK6 format.
416 Documentation about this format can be found at:
418 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
420 /* The following constants specify the sizes of the various data
421 structures that we have to create in order to build a bfd describing
422 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
423 and SIZEOF_IDATA7 below is to allow for the possibility that we might
424 need a padding byte in order to ensure 16 bit alignment for the section's
427 The value for SIZEOF_ILF_STRINGS is computed as follows:
429 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
430 per symbol for their names (longest section name is .idata$x).
432 There will be two symbols for the imported value, one the symbol name
433 and one with _imp__ prefixed. Allowing for the terminating nul's this
434 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
436 The strings in the string table must start STRING__SIZE_SIZE bytes into
437 the table in order to for the string lookup code in coffgen/coffcode to
439 #define NUM_ILF_RELOCS 8
440 #define NUM_ILF_SECTIONS 6
441 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
443 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
444 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
445 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
446 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
447 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
448 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
449 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
450 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
451 + 21 + strlen (source_dll) \
452 + NUM_ILF_SECTIONS * 9 \
454 #define SIZEOF_IDATA2 (5 * 4)
455 #define SIZEOF_IDATA4 (1 * 4)
456 #define SIZEOF_IDATA5 (1 * 4)
457 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
458 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
459 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
461 #define ILF_DATA_SIZE \
462 sizeof (* vars.bim) \
464 + SIZEOF_ILF_SYM_TABLE \
465 + SIZEOF_ILF_NATIVE_SYMS \
466 + SIZEOF_ILF_SYM_PTR_TABLE \
467 + SIZEOF_ILF_EXT_SYMS \
468 + SIZEOF_ILF_RELOCS \
469 + SIZEOF_ILF_INT_RELOCS \
470 + SIZEOF_ILF_STRINGS \
476 + SIZEOF_ILF_SECTIONS \
477 + MAX_TEXT_SECTION_SIZE
479 /* Create an empty relocation against the given symbol. */
481 pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars,
483 bfd_reloc_code_real_type reloc,
484 struct symbol_cache_entry ** sym,
485 unsigned int sym_index)
488 struct internal_reloc * internal;
490 entry = vars->reltab + vars->relcount;
491 internal = vars->int_reltab + vars->relcount;
493 entry->address = address;
495 entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc);
496 entry->sym_ptr_ptr = sym;
498 internal->r_vaddr = address;
499 internal->r_symndx = sym_index;
500 internal->r_type = entry->howto->type;
501 #if 0 /* These fields do not need to be initialised. */
502 internal->r_size = 0;
503 internal->r_extern = 0;
504 internal->r_offset = 0;
509 BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS);
512 /* Create an empty relocation against the given section. */
514 pe_ILF_make_a_reloc (pe_ILF_vars * vars,
516 bfd_reloc_code_real_type reloc,
519 pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr,
520 coff_section_data (vars->abfd, sec)->i);
523 /* Move the queued relocs into the given section. */
525 pe_ILF_save_relocs (pe_ILF_vars * vars,
528 /* Make sure that there is somewhere to store the internal relocs. */
529 if (coff_section_data (vars->abfd, sec) == NULL)
530 /* We should probably return an error indication here. */
533 coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab;
534 coff_section_data (vars->abfd, sec)->keep_relocs = true;
536 sec->relocation = vars->reltab;
537 sec->reloc_count = vars->relcount;
538 sec->flags |= SEC_RELOC;
540 vars->reltab += vars->relcount;
541 vars->int_reltab += vars->relcount;
544 BFD_ASSERT ((bfd_byte *)vars->int_reltab < (bfd_byte *)vars->string_table);
547 /* Create a global symbol and add it to the relevant tables. */
549 pe_ILF_make_a_symbol (pe_ILF_vars * vars,
551 const char * symbol_name,
552 asection_ptr section,
553 flagword extra_flags)
555 coff_symbol_type * sym;
556 combined_entry_type * ent;
558 unsigned short sclass;
560 if (extra_flags & BSF_LOCAL)
566 if (vars->magic == THUMBPEMAGIC)
568 if (extra_flags & BSF_FUNCTION)
569 sclass = C_THUMBEXTFUNC;
570 else if (extra_flags & BSF_LOCAL)
571 sclass = C_THUMBSTAT;
577 BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS);
580 ent = vars->native_ptr;
581 esym = vars->esym_ptr;
583 /* Copy the symbol's name into the string table. */
584 sprintf (vars->string_ptr, "%s%s", prefix, symbol_name);
587 section = (asection_ptr) & bfd_und_section;
589 /* Initialise the external symbol. */
590 bfd_h_put_32 (vars->abfd, vars->string_ptr - vars->string_table, (bfd_byte *) esym->e.e.e_offset);
591 bfd_h_put_16 (vars->abfd, section->target_index, (bfd_byte *) esym->e_scnum);
592 esym->e_sclass[0] = sclass;
594 /* The following initialisations are unnecessary - the memory is
595 zero initialised. They are just kept here as reminders. */
597 esym->e.e.e_zeroes = 0;
599 esym->e_type = T_NULL;
603 /* Initialise the internal symbol structure. */
604 ent->u.syment.n_sclass = sclass;
605 ent->u.syment.n_scnum = section->target_index;
606 ent->u.syment._n._n_n._n_offset = (long) sym;
608 #if 0 /* See comment above. */
609 ent->u.syment.n_value = 0;
610 ent->u.syment.n_flags = 0;
611 ent->u.syment.n_type = T_NULL;
612 ent->u.syment.n_numaux = 0;
616 sym->symbol.the_bfd = vars->abfd;
617 sym->symbol.name = vars->string_ptr;
618 sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags;
619 sym->symbol.section = section;
622 #if 0 /* See comment above. */
623 sym->symbol.value = 0;
624 sym->symbol.udata.i = 0;
625 sym->done_lineno = false;
629 * vars->table_ptr = vars->sym_index;
630 * vars->sym_ptr_ptr = sym;
632 /* Adjust pointers for the next symbol. */
635 vars->sym_ptr_ptr ++;
639 vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1;
641 BFD_ASSERT (vars->string_ptr < vars->end_string_ptr);
644 /* Create a section. */
646 pe_ILF_make_a_section (pe_ILF_vars * vars,
649 flagword extra_flags)
654 sec = bfd_make_section_old_way (vars->abfd, name);
658 flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY;
660 bfd_set_section_flags (vars->abfd, sec, flags | extra_flags);
662 bfd_set_section_alignment (vars->abfd, sec, 2);
664 /* Check that we will not run out of space. */
665 BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size);
667 /* Set the section size and contents. The actual
668 contents are filled in by our parent. */
669 bfd_set_section_size (vars->abfd, sec, size);
670 sec->contents = vars->data;
671 sec->target_index = vars->sec_index ++;
673 /* Advance data pointer in the vars structure. */
676 /* Skip the padding byte if it was not needed.
677 The logic here is that if the string length is odd,
678 then the entire string length, including the null byte,
679 is even and so the extra, padding byte, is not needed. */
683 /* Create a coff_section_tdata structure for our use. */
684 sec->used_by_bfd = (struct coff_section_tdata *) vars->data;
685 vars->data += sizeof (struct coff_section_tdata);
687 BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size);
689 /* Create a symbol to refer to this section. */
690 pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL);
692 /* Cache the index to the symbol in the coff_section_data structure. */
693 coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1;
698 /* This structure contains the code that goes into the .text section
699 in order to perform a jump into the DLL lookup table. The entries
700 in the table are index by the magic number used to represent the
701 machine type in the PE file. The contents of the data[] arrays in
702 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
703 The SIZE field says how many bytes in the DATA array are actually
704 used. The OFFSET field says where in the data array the address
705 of the .idata$5 section should be placed. */
706 #define MAX_TEXT_SECTION_SIZE 32
710 unsigned short magic;
711 unsigned char data[MAX_TEXT_SECTION_SIZE];
717 static jump_table jtab[] =
721 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
727 { MC68MAGIC, { /* XXX fill me in */ }, 0, 0 },
729 #ifdef MIPS_ARCH_MAGIC_WINCE
730 { MIPS_ARCH_MAGIC_WINCE,
731 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
732 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
737 #ifdef SH_ARCH_MAGIC_WINCE
738 { SH_ARCH_MAGIC_WINCE,
739 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
740 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
747 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
748 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
755 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
756 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
764 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
767 /* Build a full BFD from the information supplied in a ILF object. */
769 pe_ILF_build_a_bfd (bfd * abfd,
770 unsigned short magic,
771 bfd_byte * symbol_name,
772 bfd_byte * source_dll,
773 unsigned int ordinal,
778 struct internal_filehdr internal_f;
779 unsigned int import_type;
780 unsigned int import_name_type;
781 asection_ptr id4, id5, id6 = NULL, text = NULL;
782 coff_symbol_type ** imp_sym;
783 unsigned int imp_index;
785 /* Decode and verify the types field of the ILF structure. */
786 import_type = types & 0x3;
787 import_name_type = (types & 0x1c) >> 2;
796 /* XXX code yet to be written. */
797 _bfd_error_handler (_("%s: Unhandled import type; %x"),
798 bfd_get_filename (abfd), import_type);
802 _bfd_error_handler (_("%s: Unrecognised import type; %x"),
803 bfd_get_filename (abfd), import_type);
807 switch (import_name_type)
811 case IMPORT_NAME_NOPREFIX:
812 case IMPORT_NAME_UNDECORATE:
816 _bfd_error_handler (_("%s: Unrecognised import name type; %x"),
817 bfd_get_filename (abfd), import_name_type);
821 /* Initialise local variables.
823 Note these are kept in a structure rather than being
824 declared as statics since bfd frowns on global variables.
826 We are going to construct the contents of the BFD in memory,
827 so allocate all the space that we will need right now. */
828 ptr = bfd_zalloc (abfd, ILF_DATA_SIZE);
832 /* Create a bfd_in_memory structure. */
833 vars.bim = (struct bfd_in_memory *) ptr;
834 vars.bim->buffer = ptr;
835 vars.bim->size = ILF_DATA_SIZE;
836 ptr += sizeof (* vars.bim);
838 /* Initialise the pointers to regions of the memory and the
839 other contents of the pe_ILF_vars structure as well. */
840 vars.sym_cache = (coff_symbol_type *) ptr;
841 vars.sym_ptr = (coff_symbol_type *) ptr;
843 ptr += SIZEOF_ILF_SYMS;
845 vars.sym_table = (unsigned int *) ptr;
846 vars.table_ptr = (unsigned int *) ptr;
847 ptr += SIZEOF_ILF_SYM_TABLE;
849 vars.native_syms = (combined_entry_type *) ptr;
850 vars.native_ptr = (combined_entry_type *) ptr;
851 ptr += SIZEOF_ILF_NATIVE_SYMS;
853 vars.sym_ptr_table = (coff_symbol_type **) ptr;
854 vars.sym_ptr_ptr = (coff_symbol_type **) ptr;
855 ptr += SIZEOF_ILF_SYM_PTR_TABLE;
857 vars.esym_table = (SYMENT *) ptr;
858 vars.esym_ptr = (SYMENT *) ptr;
859 ptr += SIZEOF_ILF_EXT_SYMS;
861 vars.reltab = (arelent *) ptr;
863 ptr += SIZEOF_ILF_RELOCS;
865 vars.int_reltab = (struct internal_reloc *) ptr;
866 ptr += SIZEOF_ILF_INT_RELOCS;
868 vars.string_table = ptr;
869 vars.string_ptr = ptr + STRING_SIZE_SIZE;
870 ptr += SIZEOF_ILF_STRINGS;
871 vars.end_string_ptr = ptr;
873 /* The remaining space in bim->buffer is used
874 by the pe_ILF_make_a_section() function. */
880 /* Create the initial .idata$<n> sections:
881 [.idata$2: Import Directory Table -- not needed]
882 .idata$4: Import Lookup Table
883 .idata$5: Import Address Table
885 Note we do not create a .idata$3 section as this is
886 created for us by the linker script. */
887 id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0);
888 id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0);
889 if (id4 == NULL || id5 == NULL)
892 /* Fill in the contents of these sections. */
893 if (import_name_type == IMPORT_ORDINAL)
896 /* XXX - treat as IMPORT_NAME ??? */
899 * (unsigned int *) id4->contents = ordinal | 0x80000000;
900 * (unsigned int *) id5->contents = ordinal | 0x80000000;
906 /* Create .idata$6 - the Hint Name Table. */
907 id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0);
911 /* If necessary, trim the import symbol name. */
912 symbol = symbol_name;
914 if (import_name_type != IMPORT_NAME)
915 /* Skip any prefix in symbol_name. */
916 while (*symbol == '@' || * symbol == '?' || * symbol == '_')
919 if (import_name_type == IMPORT_NAME_UNDECORATE)
921 /* Truncate at the first '@' */
922 while (* symbol != 0 && * symbol != '@')
928 id6->contents[0] = ordinal & 0xff;
929 id6->contents[1] = ordinal >> 8;
931 strcpy (id6->contents + 2, symbol);
934 if (import_name_type != IMPORT_ORDINAL)
936 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6);
937 pe_ILF_save_relocs (& vars, id4);
939 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6);
940 pe_ILF_save_relocs (& vars, id5);
943 /* Create extra sections depending upon the type of import we are dealing with. */
949 /* Create a .text section.
950 First we need to look up its contents in the jump table. */
951 for (i = NUM_ENTRIES (jtab); i--;)
953 if (jtab[i].size == 0)
955 if (jtab[i].magic == magic)
958 /* If we did not find a matching entry something is wrong. */
962 /* Create the .text section. */
963 text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE);
967 /* Copy in the jump code. */
968 memcpy (text->contents, jtab[i].data, jtab[i].size);
970 /* Create an import symbol. */
971 pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0);
972 imp_sym = vars.sym_ptr_ptr - 1;
973 imp_index = vars.sym_index - 1;
975 /* Create a reloc for the data in the text section. */
976 #ifdef MIPS_ARCH_MAGIC_WINCE
977 if (magic == MIPS_ARCH_MAGIC_WINCE)
979 pe_ILF_make_a_symbol_reloc (& vars, 0, BFD_RELOC_HI16_S,
980 (struct symbol_cache_entry **) imp_sym, imp_index);
981 pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_LO16, text);
982 pe_ILF_make_a_symbol_reloc (& vars, 4, BFD_RELOC_LO16,
983 (struct symbol_cache_entry **) imp_sym, imp_index);
987 pe_ILF_make_a_symbol_reloc (& vars, jtab[i].offset, BFD_RELOC_32,
988 (asymbol **) imp_sym, imp_index);
990 pe_ILF_save_relocs (& vars, text);
997 /* XXX code not yet written. */
1001 /* Initialise the bfd. */
1002 memset (& internal_f, 0, sizeof (internal_f));
1004 internal_f.f_magic = magic;
1005 internal_f.f_symptr = 0;
1006 internal_f.f_nsyms = 0;
1007 internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */
1009 if ( ! bfd_set_start_address (abfd, 0)
1010 || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f))
1013 if (bfd_coff_mkobject_hook (abfd, (PTR) & internal_f, NULL) == NULL)
1016 coff_data (abfd)->pe = 1;
1018 if (vars.magic == THUMBPEMAGIC)
1019 /* Stop some linker warnings about thumb code not supporting interworking. */
1020 coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET;
1023 /* Switch from file contents to memory contents. */
1024 bfd_cache_close (abfd);
1026 abfd->iostream = (PTR) vars.bim;
1027 abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */;
1029 obj_sym_filepos (abfd) = 0;
1031 /* Now create a symbol describing the imported value. */
1032 switch (import_type)
1037 pe_ILF_make_a_symbol (& vars, "", symbol_name, text,
1038 BSF_NOT_AT_END | BSF_FUNCTION);
1040 /* Create an import symbol for the DLL, without the
1042 ptr = strrchr (source_dll, '.');
1045 pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0);
1051 /* Nothing to do here. */
1055 /* XXX code not yet written. */
1059 /* Point the bfd at the symbol table. */
1060 obj_symbols (abfd) = vars.sym_cache;
1061 bfd_get_symcount (abfd) = vars.sym_index;
1063 obj_raw_syments (abfd) = vars.native_syms;
1064 obj_raw_syment_count (abfd) = vars.sym_index;
1066 obj_coff_external_syms (abfd) = (PTR) vars.esym_table;
1067 obj_coff_keep_syms (abfd) = true;
1069 obj_convert (abfd) = vars.sym_table;
1070 obj_conv_table_size (abfd) = vars.sym_index;
1072 obj_coff_strings (abfd) = vars.string_table;
1073 obj_coff_keep_strings (abfd) = true;
1075 abfd->flags |= HAS_SYMS;
1080 /* We have detected a Image Library Format archive element.
1081 Decode the element and return the appropriate target. */
1082 static const bfd_target *
1083 pe_ILF_object_p (bfd * abfd)
1085 bfd_byte buffer[16];
1087 bfd_byte * symbol_name;
1088 bfd_byte * source_dll;
1089 unsigned int machine;
1091 unsigned int ordinal;
1093 unsigned short magic;
1095 /* Upon entry the first four buyes of the ILF header have
1096 already been read. Now read the rest of the header. */
1097 if (bfd_read (buffer, 1, 16, abfd) != 16)
1102 /* We do not bother to check the version number.
1103 version = bfd_h_get_16 (abfd, ptr); */
1106 machine = bfd_h_get_16 (abfd, ptr);
1109 /* Check that the machine type is recognised. */
1114 case IMAGE_FILE_MACHINE_UNKNOWN:
1115 case IMAGE_FILE_MACHINE_ALPHA:
1116 case IMAGE_FILE_MACHINE_ALPHA64:
1117 case IMAGE_FILE_MACHINE_IA64:
1120 case IMAGE_FILE_MACHINE_I386:
1126 case IMAGE_FILE_MACHINE_M68K:
1132 case IMAGE_FILE_MACHINE_R3000:
1133 case IMAGE_FILE_MACHINE_R4000:
1134 case IMAGE_FILE_MACHINE_R10000:
1136 case IMAGE_FILE_MACHINE_MIPS16:
1137 case IMAGE_FILE_MACHINE_MIPSFPU:
1138 case IMAGE_FILE_MACHINE_MIPSFPU16:
1139 #ifdef MIPS_ARCH_MAGIC_WINCE
1140 magic = MIPS_ARCH_MAGIC_WINCE;
1144 case IMAGE_FILE_MACHINE_SH3:
1145 case IMAGE_FILE_MACHINE_SH4:
1146 #ifdef SH_ARCH_MAGIC_WINCE
1147 magic = SH_ARCH_MAGIC_WINCE;
1151 case IMAGE_FILE_MACHINE_ARM:
1157 case IMAGE_FILE_MACHINE_THUMB:
1160 extern const bfd_target TARGET_LITTLE_SYM;
1162 if (abfd->xvec == & TARGET_LITTLE_SYM)
1163 magic = THUMBPEMAGIC;
1168 case IMAGE_FILE_MACHINE_POWERPC:
1169 /* We no longer support PowerPC. */
1173 _("%s: Unrecognised machine type (0x%x) in Import Library Format archive"),
1174 bfd_get_filename (abfd), machine);
1175 bfd_set_error (bfd_error_malformed_archive);
1185 _("%s: Recognised but unhandled machine type (0x%x) in Import Library Format archive"),
1186 bfd_get_filename (abfd), machine);
1187 bfd_set_error (bfd_error_wrong_format);
1192 /* We do not bother to check the date.
1193 date = bfd_h_get_32 (abfd, ptr); */
1196 size = bfd_h_get_32 (abfd, ptr);
1202 (_("%s: size field is zero in Import Library Format header"),
1203 bfd_get_filename (abfd));
1204 bfd_set_error (bfd_error_malformed_archive);
1209 ordinal = bfd_h_get_16 (abfd, ptr);
1212 types = bfd_h_get_16 (abfd, ptr);
1215 /* Now read in the two strings that follow. */
1216 ptr = bfd_alloc (abfd, size);
1220 if (bfd_read (ptr, 1, size, abfd) != size)
1224 source_dll = ptr + strlen (ptr) + 1;
1226 /* Verify that the strings are null terminated. */
1227 if (ptr[size - 1] != 0 || ((unsigned long) (source_dll - ptr) >= size))
1230 (_("%s: string not null terminated in ILF object file."),
1231 bfd_get_filename (abfd));
1232 bfd_set_error (bfd_error_malformed_archive);
1237 /* Now construct the bfd. */
1238 if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name,
1239 source_dll, ordinal, types))
1245 static const bfd_target *
1246 pe_bfd_object_p (bfd * abfd)
1249 struct external_PEI_DOS_hdr dos_hdr;
1250 struct external_PEI_IMAGE_hdr image_hdr;
1253 /* Detect if this a Microsoft Import Library Format element. */
1254 if (bfd_seek (abfd, 0x00, SEEK_SET) != 0
1255 || bfd_read (buffer, 1, 4, abfd) != 4)
1257 if (bfd_get_error () != bfd_error_system_call)
1258 bfd_set_error (bfd_error_wrong_format);
1262 if (bfd_h_get_32 (abfd, buffer) == 0xffff0000)
1263 return pe_ILF_object_p (abfd);
1265 if (bfd_seek (abfd, 0x00, SEEK_SET) != 0
1266 || bfd_read (&dos_hdr, 1, sizeof (dos_hdr), abfd)
1267 != sizeof (dos_hdr))
1269 if (bfd_get_error () != bfd_error_system_call)
1270 bfd_set_error (bfd_error_wrong_format);
1274 /* There are really two magic numbers involved; the magic number
1275 that says this is a NT executable (PEI) and the magic number that
1276 determines the architecture. The former is DOSMAGIC, stored in
1277 the e_magic field. The latter is stored in the f_magic field.
1278 If the NT magic number isn't valid, the architecture magic number
1279 could be mimicked by some other field (specifically, the number
1280 of relocs in section 3). Since this routine can only be called
1281 correctly for a PEI file, check the e_magic number here, and, if
1282 it doesn't match, clobber the f_magic number so that we don't get
1284 if (bfd_h_get_16 (abfd, (bfd_byte *) dos_hdr.e_magic) != DOSMAGIC)
1286 bfd_set_error (bfd_error_wrong_format);
1290 offset = bfd_h_get_32 (abfd, (bfd_byte *) dos_hdr.e_lfanew);
1291 if (bfd_seek (abfd, (file_ptr) offset, SEEK_SET) != 0
1292 || bfd_read (&image_hdr, 1, sizeof (image_hdr), abfd)
1293 != sizeof (image_hdr))
1295 if (bfd_get_error () != bfd_error_system_call)
1296 bfd_set_error (bfd_error_wrong_format);
1300 if (bfd_h_get_32 (abfd, (bfd_byte *) image_hdr.nt_signature)
1303 bfd_set_error (bfd_error_wrong_format);
1307 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1308 pick up the COFF header for PE, see "struct external_PEI_filehdr"
1309 in include/coff/pe.h. We adjust so that that will work. */
1311 (file_ptr) (offset - sizeof (dos_hdr)),
1315 if (bfd_get_error () != bfd_error_system_call)
1316 bfd_set_error (bfd_error_wrong_format);
1320 return coff_object_p (abfd);
1323 #define coff_object_p pe_bfd_object_p
1324 #endif /* COFF_IMAGE_WITH_PE */