1
/* Support for the generic parts of PE/PEI, for BFD.
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Copyright 1995-2013 Free Software Foundation, Inc.
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Written by Cygnus Solutions.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* Most of this hacked by Steve Chamberlain,
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PE/PEI rearrangement (and code added): Donn Terry
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Softway Systems, Inc. */
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/* Hey look, some documentation [and in a place you expect to find it]!
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The main reference for the pei format is "Microsoft Portable Executable
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and Common Object File Format Specification 4.1". Get it if you need to
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do some serious hacking on this code.
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"Peering Inside the PE: A Tour of the Win32 Portable Executable
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File Format", MSJ 1994, Volume 9.
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The *sole* difference between the pe format and the pei format is that the
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latter has an MSDOS 2.0 .exe header on the front that prints the message
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"This app must be run under Windows." (or some such).
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(FIXME: Whether that statement is *really* true or not is unknown.
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Are there more subtle differences between pe and pei formats?
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For now assume there aren't. If you find one, then for God sakes
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The Microsoft docs use the word "image" instead of "executable" because
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the former can also refer to a DLL (shared library). Confusion can arise
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because the `i' in `pei' also refers to "image". The `pe' format can
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also create images (i.e. executables), it's just that to run on a win32
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system you need to use the pei format.
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FIXME: Please add more docs here so the next poor fool that has to hack
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on this code has a chance of getting something accomplished without
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wasting too much time. */
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static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data) (bfd *, void *) =
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#ifndef coff_bfd_print_private_bfd_data
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coff_bfd_print_private_bfd_data;
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#undef coff_bfd_print_private_bfd_data
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static bfd_boolean pe_print_private_bfd_data (bfd *, void *);
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#define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
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static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data) (bfd *, bfd *) =
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#ifndef coff_bfd_copy_private_bfd_data
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coff_bfd_copy_private_bfd_data;
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#undef coff_bfd_copy_private_bfd_data
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static bfd_boolean pe_bfd_copy_private_bfd_data (bfd *, bfd *);
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#define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
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#define coff_mkobject pe_mkobject
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#define coff_mkobject_hook pe_mkobject_hook
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#ifdef COFF_IMAGE_WITH_PE
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/* This structure contains static variables used by the ILF code. */
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typedef asection * asection_ptr;
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struct bfd_in_memory * bim;
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unsigned int relcount;
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coff_symbol_type * sym_cache;
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coff_symbol_type * sym_ptr;
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unsigned int sym_index;
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unsigned int * sym_table;
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unsigned int * table_ptr;
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combined_entry_type * native_syms;
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combined_entry_type * native_ptr;
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coff_symbol_type ** sym_ptr_table;
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coff_symbol_type ** sym_ptr_ptr;
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unsigned int sec_index;
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char * end_string_ptr;
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struct internal_reloc * int_reltab;
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#endif /* COFF_IMAGE_WITH_PE */
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const bfd_target *coff_real_object_p
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(bfd *, unsigned, struct internal_filehdr *, struct internal_aouthdr *);
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#ifndef NO_COFF_RELOCS
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coff_swap_reloc_in (bfd * abfd, void * src, void * dst)
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RELOC *reloc_src = (RELOC *) src;
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struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
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reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr);
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reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx);
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reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type);
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#ifdef SWAP_IN_RELOC_OFFSET
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reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET (abfd, reloc_src->r_offset);
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coff_swap_reloc_out (bfd * abfd, void * src, void * dst)
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struct internal_reloc *reloc_src = (struct internal_reloc *) src;
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struct external_reloc *reloc_dst = (struct external_reloc *) dst;
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H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
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H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
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H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type);
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#ifdef SWAP_OUT_RELOC_OFFSET
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SWAP_OUT_RELOC_OFFSET (abfd, reloc_src->r_offset, reloc_dst->r_offset);
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#ifdef SWAP_OUT_RELOC_EXTRA
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SWAP_OUT_RELOC_EXTRA (abfd, reloc_src, reloc_dst);
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#endif /* not NO_COFF_RELOCS */
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#ifdef COFF_IMAGE_WITH_PE
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#define FILHDR struct external_PEI_IMAGE_hdr
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coff_swap_filehdr_in (bfd * abfd, void * src, void * dst)
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FILHDR *filehdr_src = (FILHDR *) src;
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struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
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filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->f_magic);
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filehdr_dst->f_nscns = H_GET_16 (abfd, filehdr_src->f_nscns);
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filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->f_timdat);
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filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->f_nsyms);
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filehdr_dst->f_flags = H_GET_16 (abfd, filehdr_src->f_flags);
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filehdr_dst->f_symptr = H_GET_32 (abfd, filehdr_src->f_symptr);
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/* Other people's tools sometimes generate headers with an nsyms but
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if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0)
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filehdr_dst->f_nsyms = 0;
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filehdr_dst->f_flags |= F_LSYMS;
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filehdr_dst->f_opthdr = H_GET_16 (abfd, filehdr_src-> f_opthdr);
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#ifdef COFF_IMAGE_WITH_PE
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# define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out
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#elif defined COFF_WITH_pex64
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# define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out
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#elif defined COFF_WITH_pep
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# define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out
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# define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
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coff_swap_scnhdr_in (bfd * abfd, void * ext, void * in)
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SCNHDR *scnhdr_ext = (SCNHDR *) ext;
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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memcpy (scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name));
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scnhdr_int->s_vaddr = GET_SCNHDR_VADDR (abfd, scnhdr_ext->s_vaddr);
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scnhdr_int->s_paddr = GET_SCNHDR_PADDR (abfd, scnhdr_ext->s_paddr);
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scnhdr_int->s_size = GET_SCNHDR_SIZE (abfd, scnhdr_ext->s_size);
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scnhdr_int->s_scnptr = GET_SCNHDR_SCNPTR (abfd, scnhdr_ext->s_scnptr);
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scnhdr_int->s_relptr = GET_SCNHDR_RELPTR (abfd, scnhdr_ext->s_relptr);
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scnhdr_int->s_lnnoptr = GET_SCNHDR_LNNOPTR (abfd, scnhdr_ext->s_lnnoptr);
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scnhdr_int->s_flags = H_GET_32 (abfd, scnhdr_ext->s_flags);
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/* MS handles overflow of line numbers by carrying into the reloc
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field (it appears). Since it's supposed to be zero for PE
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*IMAGE* format, that's safe. This is still a bit iffy. */
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#ifdef COFF_IMAGE_WITH_PE
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scnhdr_int->s_nlnno = (H_GET_16 (abfd, scnhdr_ext->s_nlnno)
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+ (H_GET_16 (abfd, scnhdr_ext->s_nreloc) << 16));
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scnhdr_int->s_nreloc = 0;
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scnhdr_int->s_nreloc = H_GET_16 (abfd, scnhdr_ext->s_nreloc);
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scnhdr_int->s_nlnno = H_GET_16 (abfd, scnhdr_ext->s_nlnno);
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if (scnhdr_int->s_vaddr != 0)
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scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase;
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/* Do not cut upper 32-bits for 64-bit vma. */
234
#ifndef COFF_WITH_pex64
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scnhdr_int->s_vaddr &= 0xffffffff;
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#ifndef COFF_NO_HACK_SCNHDR_SIZE
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/* If this section holds uninitialized data and is from an object file
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or from an executable image that has not initialized the field,
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or if the image is an executable file and the physical size is padded,
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use the virtual size (stored in s_paddr) instead. */
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if (scnhdr_int->s_paddr > 0
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&& (((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0
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&& (! bfd_pei_p (abfd) || scnhdr_int->s_size == 0))
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|| (bfd_pei_p (abfd) && (scnhdr_int->s_size > scnhdr_int->s_paddr))))
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/* This code used to set scnhdr_int->s_paddr to 0. However,
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coff_set_alignment_hook stores s_paddr in virt_size, which
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only works if it correctly holds the virtual size of the
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scnhdr_int->s_size = scnhdr_int->s_paddr;
257
pe_mkobject (bfd * abfd)
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bfd_size_type amt = sizeof (pe_data_type);
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abfd->tdata.pe_obj_data = (struct pe_tdata *) bfd_zalloc (abfd, amt);
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if (abfd->tdata.pe_obj_data == 0)
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/* in_reloc_p is architecture dependent. */
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pe->in_reloc_p = in_reloc_p;
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/* Create the COFF backend specific information. */
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pe_mkobject_hook (bfd * abfd,
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void * aouthdr ATTRIBUTE_UNUSED)
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
287
if (! pe_mkobject (abfd))
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pe->coff.sym_filepos = internal_f->f_symptr;
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/* These members communicate important constants about the symbol
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table to GDB's symbol-reading code. These `constants'
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unfortunately vary among coff implementations... */
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pe->coff.local_n_btmask = N_BTMASK;
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pe->coff.local_n_btshft = N_BTSHFT;
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pe->coff.local_n_tmask = N_TMASK;
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pe->coff.local_n_tshift = N_TSHIFT;
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pe->coff.local_symesz = SYMESZ;
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pe->coff.local_auxesz = AUXESZ;
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pe->coff.local_linesz = LINESZ;
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pe->coff.timestamp = internal_f->f_timdat;
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obj_raw_syment_count (abfd) =
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obj_conv_table_size (abfd) =
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pe->real_flags = internal_f->f_flags;
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if ((internal_f->f_flags & F_DLL) != 0)
314
if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0)
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abfd->flags |= HAS_DEBUG;
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#ifdef COFF_IMAGE_WITH_PE
319
pe->pe_opthdr = ((struct internal_aouthdr *) aouthdr)->pe;
323
if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags))
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coff_data (abfd) ->flags = 0;
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pe_print_private_bfd_data (bfd *abfd, void * vfile)
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FILE *file = (FILE *) vfile;
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if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile))
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if (pe_saved_coff_bfd_print_private_bfd_data == NULL)
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return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile);
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/* Copy any private info we understand from the input bfd
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to the output bfd. */
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pe_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
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/* PR binutils/716: Copy the large address aware flag.
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XXX: Should we be copying other flags or other fields in the pe_data()
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if (pe_data (obfd) != NULL
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&& pe_data (ibfd) != NULL
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&& pe_data (ibfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE)
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pe_data (obfd)->real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
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if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd))
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if (pe_saved_coff_bfd_copy_private_bfd_data)
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return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd);
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#define coff_bfd_copy_private_section_data \
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_bfd_XX_bfd_copy_private_section_data
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#define coff_get_symbol_info _bfd_XX_get_symbol_info
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#ifdef COFF_IMAGE_WITH_PE
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/* Code to handle Microsoft's Image Library Format.
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Also known as LINK6 format.
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Documentation about this format can be found at:
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http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
382
/* The following constants specify the sizes of the various data
383
structures that we have to create in order to build a bfd describing
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an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
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and SIZEOF_IDATA7 below is to allow for the possibility that we might
386
need a padding byte in order to ensure 16 bit alignment for the section's
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The value for SIZEOF_ILF_STRINGS is computed as follows:
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There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
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per symbol for their names (longest section name is .idata$x).
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There will be two symbols for the imported value, one the symbol name
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and one with _imp__ prefixed. Allowing for the terminating nul's this
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is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
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The strings in the string table must start STRING__SIZE_SIZE bytes into
399
the table in order to for the string lookup code in coffgen/coffcode to
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#define NUM_ILF_RELOCS 8
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#define NUM_ILF_SECTIONS 6
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#define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
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#define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
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#define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
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#define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
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#define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
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#define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
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#define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
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#define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
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#define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
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+ 21 + strlen (source_dll) \
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+ NUM_ILF_SECTIONS * 9 \
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#define SIZEOF_IDATA2 (5 * 4)
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/* For PEx64 idata4 & 5 have thumb size of 8 bytes. */
419
#ifdef COFF_WITH_pex64
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#define SIZEOF_IDATA4 (2 * 4)
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#define SIZEOF_IDATA5 (2 * 4)
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#define SIZEOF_IDATA4 (1 * 4)
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#define SIZEOF_IDATA5 (1 * 4)
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#define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
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#define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
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#define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
431
#define ILF_DATA_SIZE \
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+ SIZEOF_ILF_SYM_TABLE \
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+ SIZEOF_ILF_NATIVE_SYMS \
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+ SIZEOF_ILF_SYM_PTR_TABLE \
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+ SIZEOF_ILF_EXT_SYMS \
437
+ SIZEOF_ILF_RELOCS \
438
+ SIZEOF_ILF_INT_RELOCS \
439
+ SIZEOF_ILF_STRINGS \
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+ SIZEOF_ILF_SECTIONS \
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+ MAX_TEXT_SECTION_SIZE
448
/* Create an empty relocation against the given symbol. */
451
pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars,
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bfd_reloc_code_real_type reloc,
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struct bfd_symbol ** sym,
455
unsigned int sym_index)
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struct internal_reloc * internal;
460
entry = vars->reltab + vars->relcount;
461
internal = vars->int_reltab + vars->relcount;
463
entry->address = address;
465
entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc);
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entry->sym_ptr_ptr = sym;
468
internal->r_vaddr = address;
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internal->r_symndx = sym_index;
470
internal->r_type = entry->howto->type;
474
BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS);
477
/* Create an empty relocation against the given section. */
480
pe_ILF_make_a_reloc (pe_ILF_vars * vars,
482
bfd_reloc_code_real_type reloc,
485
pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr,
486
coff_section_data (vars->abfd, sec)->i);
489
/* Move the queued relocs into the given section. */
492
pe_ILF_save_relocs (pe_ILF_vars * vars,
495
/* Make sure that there is somewhere to store the internal relocs. */
496
if (coff_section_data (vars->abfd, sec) == NULL)
497
/* We should probably return an error indication here. */
500
coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab;
501
coff_section_data (vars->abfd, sec)->keep_relocs = TRUE;
503
sec->relocation = vars->reltab;
504
sec->reloc_count = vars->relcount;
505
sec->flags |= SEC_RELOC;
507
vars->reltab += vars->relcount;
508
vars->int_reltab += vars->relcount;
511
BFD_ASSERT ((bfd_byte *) vars->int_reltab < (bfd_byte *) vars->string_table);
514
/* Create a global symbol and add it to the relevant tables. */
517
pe_ILF_make_a_symbol (pe_ILF_vars * vars,
519
const char * symbol_name,
520
asection_ptr section,
521
flagword extra_flags)
523
coff_symbol_type * sym;
524
combined_entry_type * ent;
526
unsigned short sclass;
528
if (extra_flags & BSF_LOCAL)
534
if (vars->magic == THUMBPEMAGIC)
536
if (extra_flags & BSF_FUNCTION)
537
sclass = C_THUMBEXTFUNC;
538
else if (extra_flags & BSF_LOCAL)
539
sclass = C_THUMBSTAT;
545
BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS);
548
ent = vars->native_ptr;
549
esym = vars->esym_ptr;
551
/* Copy the symbol's name into the string table. */
552
sprintf (vars->string_ptr, "%s%s", prefix, symbol_name);
555
section = bfd_und_section_ptr;
557
/* Initialise the external symbol. */
558
H_PUT_32 (vars->abfd, vars->string_ptr - vars->string_table,
560
H_PUT_16 (vars->abfd, section->target_index, esym->e_scnum);
561
esym->e_sclass[0] = sclass;
563
/* The following initialisations are unnecessary - the memory is
564
zero initialised. They are just kept here as reminders. */
566
/* Initialise the internal symbol structure. */
567
ent->u.syment.n_sclass = sclass;
568
ent->u.syment.n_scnum = section->target_index;
569
ent->u.syment._n._n_n._n_offset = (bfd_hostptr_t) sym;
571
sym->symbol.the_bfd = vars->abfd;
572
sym->symbol.name = vars->string_ptr;
573
sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags;
574
sym->symbol.section = section;
577
* vars->table_ptr = vars->sym_index;
578
* vars->sym_ptr_ptr = sym;
580
/* Adjust pointers for the next symbol. */
583
vars->sym_ptr_ptr ++;
587
vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1;
589
BFD_ASSERT (vars->string_ptr < vars->end_string_ptr);
592
/* Create a section. */
595
pe_ILF_make_a_section (pe_ILF_vars * vars,
598
flagword extra_flags)
603
sec = bfd_make_section_old_way (vars->abfd, name);
607
flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY;
609
bfd_set_section_flags (vars->abfd, sec, flags | extra_flags);
611
(void) bfd_set_section_alignment (vars->abfd, sec, 2);
613
/* Check that we will not run out of space. */
614
BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size);
616
/* Set the section size and contents. The actual
617
contents are filled in by our parent. */
618
bfd_set_section_size (vars->abfd, sec, (bfd_size_type) size);
619
sec->contents = vars->data;
620
sec->target_index = vars->sec_index ++;
622
/* Advance data pointer in the vars structure. */
625
/* Skip the padding byte if it was not needed.
626
The logic here is that if the string length is odd,
627
then the entire string length, including the null byte,
628
is even and so the extra, padding byte, is not needed. */
632
/* Create a coff_section_tdata structure for our use. */
633
sec->used_by_bfd = (struct coff_section_tdata *) vars->data;
634
vars->data += sizeof (struct coff_section_tdata);
636
BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size);
638
/* Create a symbol to refer to this section. */
639
pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL);
641
/* Cache the index to the symbol in the coff_section_data structure. */
642
coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1;
647
/* This structure contains the code that goes into the .text section
648
in order to perform a jump into the DLL lookup table. The entries
649
in the table are index by the magic number used to represent the
650
machine type in the PE file. The contents of the data[] arrays in
651
these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
652
The SIZE field says how many bytes in the DATA array are actually
653
used. The OFFSET field says where in the data array the address
654
of the .idata$5 section should be placed. */
655
#define MAX_TEXT_SECTION_SIZE 32
659
unsigned short magic;
660
unsigned char data[MAX_TEXT_SECTION_SIZE];
666
static jump_table jtab[] =
670
{ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
677
{ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
684
{ /* XXX fill me in */ },
689
#ifdef MIPS_ARCH_MAGIC_WINCE
690
{ MIPS_ARCH_MAGIC_WINCE,
691
{ 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
692
0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
697
#ifdef SH_ARCH_MAGIC_WINCE
698
{ SH_ARCH_MAGIC_WINCE,
699
{ 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
700
0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
707
{ 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
708
0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
715
{ 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
716
0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
724
#define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
727
/* Build a full BFD from the information supplied in a ILF object. */
730
pe_ILF_build_a_bfd (bfd * abfd,
734
unsigned int ordinal,
739
struct internal_filehdr internal_f;
740
unsigned int import_type;
741
unsigned int import_name_type;
742
asection_ptr id4, id5, id6 = NULL, text = NULL;
743
coff_symbol_type ** imp_sym;
744
unsigned int imp_index;
746
/* Decode and verify the types field of the ILF structure. */
747
import_type = types & 0x3;
748
import_name_type = (types & 0x1c) >> 2;
757
/* XXX code yet to be written. */
758
_bfd_error_handler (_("%B: Unhandled import type; %x"),
763
_bfd_error_handler (_("%B: Unrecognised import type; %x"),
768
switch (import_name_type)
772
case IMPORT_NAME_NOPREFIX:
773
case IMPORT_NAME_UNDECORATE:
777
_bfd_error_handler (_("%B: Unrecognised import name type; %x"),
778
abfd, import_name_type);
782
/* Initialise local variables.
784
Note these are kept in a structure rather than being
785
declared as statics since bfd frowns on global variables.
787
We are going to construct the contents of the BFD in memory,
788
so allocate all the space that we will need right now. */
790
= (struct bfd_in_memory *) bfd_malloc ((bfd_size_type) sizeof (*vars.bim));
791
if (vars.bim == NULL)
794
ptr = (bfd_byte *) bfd_zmalloc ((bfd_size_type) ILF_DATA_SIZE);
795
vars.bim->buffer = ptr;
796
vars.bim->size = ILF_DATA_SIZE;
800
/* Initialise the pointers to regions of the memory and the
801
other contents of the pe_ILF_vars structure as well. */
802
vars.sym_cache = (coff_symbol_type *) ptr;
803
vars.sym_ptr = (coff_symbol_type *) ptr;
805
ptr += SIZEOF_ILF_SYMS;
807
vars.sym_table = (unsigned int *) ptr;
808
vars.table_ptr = (unsigned int *) ptr;
809
ptr += SIZEOF_ILF_SYM_TABLE;
811
vars.native_syms = (combined_entry_type *) ptr;
812
vars.native_ptr = (combined_entry_type *) ptr;
813
ptr += SIZEOF_ILF_NATIVE_SYMS;
815
vars.sym_ptr_table = (coff_symbol_type **) ptr;
816
vars.sym_ptr_ptr = (coff_symbol_type **) ptr;
817
ptr += SIZEOF_ILF_SYM_PTR_TABLE;
819
vars.esym_table = (SYMENT *) ptr;
820
vars.esym_ptr = (SYMENT *) ptr;
821
ptr += SIZEOF_ILF_EXT_SYMS;
823
vars.reltab = (arelent *) ptr;
825
ptr += SIZEOF_ILF_RELOCS;
827
vars.int_reltab = (struct internal_reloc *) ptr;
828
ptr += SIZEOF_ILF_INT_RELOCS;
830
vars.string_table = (char *) ptr;
831
vars.string_ptr = (char *) ptr + STRING_SIZE_SIZE;
832
ptr += SIZEOF_ILF_STRINGS;
833
vars.end_string_ptr = (char *) ptr;
835
/* The remaining space in bim->buffer is used
836
by the pe_ILF_make_a_section() function. */
842
/* Create the initial .idata$<n> sections:
843
[.idata$2: Import Directory Table -- not needed]
844
.idata$4: Import Lookup Table
845
.idata$5: Import Address Table
847
Note we do not create a .idata$3 section as this is
848
created for us by the linker script. */
849
id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0);
850
id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0);
851
if (id4 == NULL || id5 == NULL)
854
/* Fill in the contents of these sections. */
855
if (import_name_type == IMPORT_ORDINAL)
858
/* XXX - treat as IMPORT_NAME ??? */
861
#ifdef COFF_WITH_pex64
862
((unsigned int *) id4->contents)[0] = ordinal;
863
((unsigned int *) id4->contents)[1] = 0x80000000;
864
((unsigned int *) id5->contents)[0] = ordinal;
865
((unsigned int *) id5->contents)[1] = 0x80000000;
867
* (unsigned int *) id4->contents = ordinal | 0x80000000;
868
* (unsigned int *) id5->contents = ordinal | 0x80000000;
876
/* Create .idata$6 - the Hint Name Table. */
877
id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0);
881
/* If necessary, trim the import symbol name. */
882
symbol = symbol_name;
884
/* As used by MS compiler, '_', '@', and '?' are alternative
885
forms of USER_LABEL_PREFIX, with '?' for c++ mangled names,
886
'@' used for fastcall (in C), '_' everywhere else. Only one
887
of these is used for a symbol. We strip this leading char for
888
IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the
889
PE COFF 6.0 spec (section 8.3, Import Name Type). */
891
if (import_name_type != IMPORT_NAME)
895
/* Check that we don't remove for targets with empty
896
USER_LABEL_PREFIX the leading underscore. */
897
if ((c == '_' && abfd->xvec->symbol_leading_char != 0)
898
|| c == '@' || c == '?')
902
len = strlen (symbol);
903
if (import_name_type == IMPORT_NAME_UNDECORATE)
905
/* Truncate at the first '@'. */
906
char *at = strchr (symbol, '@');
912
id6->contents[0] = ordinal & 0xff;
913
id6->contents[1] = ordinal >> 8;
915
memcpy ((char *) id6->contents + 2, symbol, len);
916
id6->contents[len + 2] = '\0';
919
if (import_name_type != IMPORT_ORDINAL)
921
pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
922
pe_ILF_save_relocs (&vars, id4);
924
pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6);
925
pe_ILF_save_relocs (&vars, id5);
928
/* Create extra sections depending upon the type of import we are dealing with. */
934
/* Create a .text section.
935
First we need to look up its contents in the jump table. */
936
for (i = NUM_ENTRIES (jtab); i--;)
938
if (jtab[i].size == 0)
940
if (jtab[i].magic == magic)
943
/* If we did not find a matching entry something is wrong. */
947
/* Create the .text section. */
948
text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE);
952
/* Copy in the jump code. */
953
memcpy (text->contents, jtab[i].data, jtab[i].size);
955
/* Create an import symbol. */
956
pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0);
957
imp_sym = vars.sym_ptr_ptr - 1;
958
imp_index = vars.sym_index - 1;
960
/* Create a reloc for the data in the text section. */
961
#ifdef MIPS_ARCH_MAGIC_WINCE
962
if (magic == MIPS_ARCH_MAGIC_WINCE)
964
pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 0, BFD_RELOC_HI16_S,
965
(struct bfd_symbol **) imp_sym,
967
pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_LO16, text);
968
pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 4, BFD_RELOC_LO16,
969
(struct bfd_symbol **) imp_sym,
974
pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset,
975
BFD_RELOC_32, (asymbol **) imp_sym,
978
pe_ILF_save_relocs (& vars, text);
985
/* XXX code not yet written. */
989
/* Initialise the bfd. */
990
memset (& internal_f, 0, sizeof (internal_f));
992
internal_f.f_magic = magic;
993
internal_f.f_symptr = 0;
994
internal_f.f_nsyms = 0;
995
internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */
997
if ( ! bfd_set_start_address (abfd, (bfd_vma) 0)
998
|| ! bfd_coff_set_arch_mach_hook (abfd, & internal_f))
1001
if (bfd_coff_mkobject_hook (abfd, (void *) & internal_f, NULL) == NULL)
1004
coff_data (abfd)->pe = 1;
1006
if (vars.magic == THUMBPEMAGIC)
1007
/* Stop some linker warnings about thumb code not supporting interworking. */
1008
coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET;
1011
/* Switch from file contents to memory contents. */
1012
bfd_cache_close (abfd);
1014
abfd->iostream = (void *) vars.bim;
1015
abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */;
1016
abfd->iovec = &_bfd_memory_iovec;
1019
obj_sym_filepos (abfd) = 0;
1021
/* Now create a symbol describing the imported value. */
1022
switch (import_type)
1025
pe_ILF_make_a_symbol (& vars, "", symbol_name, text,
1026
BSF_NOT_AT_END | BSF_FUNCTION);
1028
/* Create an import symbol for the DLL, without the
1030
ptr = (bfd_byte *) strrchr (source_dll, '.');
1033
pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0);
1039
/* Nothing to do here. */
1043
/* XXX code not yet written. */
1047
/* Point the bfd at the symbol table. */
1048
obj_symbols (abfd) = vars.sym_cache;
1049
bfd_get_symcount (abfd) = vars.sym_index;
1051
obj_raw_syments (abfd) = vars.native_syms;
1052
obj_raw_syment_count (abfd) = vars.sym_index;
1054
obj_coff_external_syms (abfd) = (void *) vars.esym_table;
1055
obj_coff_keep_syms (abfd) = TRUE;
1057
obj_convert (abfd) = vars.sym_table;
1058
obj_conv_table_size (abfd) = vars.sym_index;
1060
obj_coff_strings (abfd) = vars.string_table;
1061
obj_coff_keep_strings (abfd) = TRUE;
1063
abfd->flags |= HAS_SYMS;
1068
if (vars.bim->buffer != NULL)
1069
free (vars.bim->buffer);
1074
/* We have detected a Image Library Format archive element.
1075
Decode the element and return the appropriate target. */
1077
static const bfd_target *
1078
pe_ILF_object_p (bfd * abfd)
1080
bfd_byte buffer[16];
1084
unsigned int machine;
1086
unsigned int ordinal;
1090
/* Upon entry the first four buyes of the ILF header have
1091
already been read. Now read the rest of the header. */
1092
if (bfd_bread (buffer, (bfd_size_type) 16, abfd) != 16)
1097
/* We do not bother to check the version number.
1098
version = H_GET_16 (abfd, ptr); */
1101
machine = H_GET_16 (abfd, ptr);
1104
/* Check that the machine type is recognised. */
1109
case IMAGE_FILE_MACHINE_UNKNOWN:
1110
case IMAGE_FILE_MACHINE_ALPHA:
1111
case IMAGE_FILE_MACHINE_ALPHA64:
1112
case IMAGE_FILE_MACHINE_IA64:
1115
case IMAGE_FILE_MACHINE_I386:
1121
case IMAGE_FILE_MACHINE_AMD64:
1127
case IMAGE_FILE_MACHINE_M68K:
1133
case IMAGE_FILE_MACHINE_R3000:
1134
case IMAGE_FILE_MACHINE_R4000:
1135
case IMAGE_FILE_MACHINE_R10000:
1137
case IMAGE_FILE_MACHINE_MIPS16:
1138
case IMAGE_FILE_MACHINE_MIPSFPU:
1139
case IMAGE_FILE_MACHINE_MIPSFPU16:
1140
#ifdef MIPS_ARCH_MAGIC_WINCE
1141
magic = MIPS_ARCH_MAGIC_WINCE;
1145
case IMAGE_FILE_MACHINE_SH3:
1146
case IMAGE_FILE_MACHINE_SH4:
1147
#ifdef SH_ARCH_MAGIC_WINCE
1148
magic = SH_ARCH_MAGIC_WINCE;
1152
case IMAGE_FILE_MACHINE_ARM:
1158
case IMAGE_FILE_MACHINE_THUMB:
1161
extern const bfd_target TARGET_LITTLE_SYM;
1163
if (abfd->xvec == & TARGET_LITTLE_SYM)
1164
magic = THUMBPEMAGIC;
1169
case IMAGE_FILE_MACHINE_POWERPC:
1170
/* We no longer support PowerPC. */
1173
(_("%B: Unrecognised machine type (0x%x)"
1174
" in Import Library Format archive"),
1176
bfd_set_error (bfd_error_malformed_archive);
1185
(_("%B: Recognised but unhandled machine type (0x%x)"
1186
" in Import Library Format archive"),
1188
bfd_set_error (bfd_error_wrong_format);
1193
/* We do not bother to check the date.
1194
date = H_GET_32 (abfd, ptr); */
1197
size = H_GET_32 (abfd, ptr);
1203
(_("%B: size field is zero in Import Library Format header"), abfd);
1204
bfd_set_error (bfd_error_malformed_archive);
1209
ordinal = H_GET_16 (abfd, ptr);
1212
types = H_GET_16 (abfd, ptr);
1215
/* Now read in the two strings that follow. */
1216
ptr = (bfd_byte *) bfd_alloc (abfd, size);
1220
if (bfd_bread (ptr, size, abfd) != size)
1222
bfd_release (abfd, ptr);
1226
symbol_name = (char *) ptr;
1227
source_dll = symbol_name + strlen (symbol_name) + 1;
1229
/* Verify that the strings are null terminated. */
1230
if (ptr[size - 1] != 0
1231
|| (bfd_size_type) ((bfd_byte *) source_dll - ptr) >= size)
1234
(_("%B: string not null terminated in ILF object file."), abfd);
1235
bfd_set_error (bfd_error_malformed_archive);
1236
bfd_release (abfd, ptr);
1240
/* Now construct the bfd. */
1241
if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name,
1242
source_dll, ordinal, types))
1244
bfd_release (abfd, ptr);
1251
static const bfd_target *
1252
pe_bfd_object_p (bfd * abfd)
1255
struct external_PEI_DOS_hdr dos_hdr;
1256
struct external_PEI_IMAGE_hdr image_hdr;
1257
struct internal_filehdr internal_f;
1258
struct internal_aouthdr internal_a;
1259
file_ptr opt_hdr_size;
1262
/* Detect if this a Microsoft Import Library Format element. */
1263
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
1264
|| bfd_bread (buffer, (bfd_size_type) 4, abfd) != 4)
1266
if (bfd_get_error () != bfd_error_system_call)
1267
bfd_set_error (bfd_error_wrong_format);
1271
if (H_GET_32 (abfd, buffer) == 0xffff0000)
1272
return pe_ILF_object_p (abfd);
1274
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
1275
|| bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd)
1276
!= sizeof (dos_hdr))
1278
if (bfd_get_error () != bfd_error_system_call)
1279
bfd_set_error (bfd_error_wrong_format);
1283
/* There are really two magic numbers involved; the magic number
1284
that says this is a NT executable (PEI) and the magic number that
1285
determines the architecture. The former is DOSMAGIC, stored in
1286
the e_magic field. The latter is stored in the f_magic field.
1287
If the NT magic number isn't valid, the architecture magic number
1288
could be mimicked by some other field (specifically, the number
1289
of relocs in section 3). Since this routine can only be called
1290
correctly for a PEI file, check the e_magic number here, and, if
1291
it doesn't match, clobber the f_magic number so that we don't get
1293
if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC)
1295
bfd_set_error (bfd_error_wrong_format);
1299
offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
1300
if (bfd_seek (abfd, offset, SEEK_SET) != 0
1301
|| (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd)
1302
!= sizeof (image_hdr)))
1304
if (bfd_get_error () != bfd_error_system_call)
1305
bfd_set_error (bfd_error_wrong_format);
1309
if (H_GET_32 (abfd, image_hdr.nt_signature) != 0x4550)
1311
bfd_set_error (bfd_error_wrong_format);
1315
/* Swap file header, so that we get the location for calling
1317
bfd_coff_swap_filehdr_in (abfd, (PTR)&image_hdr, &internal_f);
1319
if (! bfd_coff_bad_format_hook (abfd, &internal_f)
1320
|| internal_f.f_opthdr > bfd_coff_aoutsz (abfd))
1322
bfd_set_error (bfd_error_wrong_format);
1326
/* Read the optional header, which has variable size. */
1327
opt_hdr_size = internal_f.f_opthdr;
1329
if (opt_hdr_size != 0)
1333
opthdr = bfd_alloc (abfd, opt_hdr_size);
1336
if (bfd_bread (opthdr, opt_hdr_size, abfd)
1337
!= (bfd_size_type) opt_hdr_size)
1340
bfd_coff_swap_aouthdr_in (abfd, opthdr, (PTR) & internal_a);
1343
return coff_real_object_p (abfd, internal_f.f_nscns, &internal_f,
1346
: (struct internal_aouthdr *) NULL));
1349
#define coff_object_p pe_bfd_object_p
1350
#endif /* COFF_IMAGE_WITH_PE */
added
removed
binutils-2.23.52.20130611/bfd/peicode.h
