diff options
Diffstat (limited to 'bfd/peicode.h')
| -rw-r--r-- | bfd/peicode.h | 1324 |
1 files changed, 0 insertions, 1324 deletions
diff --git a/bfd/peicode.h b/bfd/peicode.h deleted file mode 100644 index 20fe01cba65..00000000000 --- a/bfd/peicode.h +++ /dev/null @@ -1,1324 +0,0 @@ -/* Support for the generic parts of PE/PEI, for BFD. - Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. - Written by Cygnus Solutions. - -This file is part of BFD, the Binary File Descriptor library. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* -Most of this hacked by Steve Chamberlain, - sac@cygnus.com - -PE/PEI rearrangement (and code added): Donn Terry - Softway Systems, Inc. -*/ - -/* Hey look, some documentation [and in a place you expect to find it]! - - The main reference for the pei format is "Microsoft Portable Executable - and Common Object File Format Specification 4.1". Get it if you need to - do some serious hacking on this code. - - Another reference: - "Peering Inside the PE: A Tour of the Win32 Portable Executable - File Format", MSJ 1994, Volume 9. - - The *sole* difference between the pe format and the pei format is that the - latter has an MSDOS 2.0 .exe header on the front that prints the message - "This app must be run under Windows." (or some such). - (FIXME: Whether that statement is *really* true or not is unknown. - Are there more subtle differences between pe and pei formats? - For now assume there aren't. If you find one, then for God sakes - document it here!) - - The Microsoft docs use the word "image" instead of "executable" because - the former can also refer to a DLL (shared library). Confusion can arise - because the `i' in `pei' also refers to "image". The `pe' format can - also create images (i.e. executables), it's just that to run on a win32 - system you need to use the pei format. - - FIXME: Please add more docs here so the next poor fool that has to hack - on this code has a chance of getting something accomplished without - wasting too much time. -*/ - -#include "libpei.h" - -static boolean (*pe_saved_coff_bfd_print_private_bfd_data) - PARAMS ((bfd *, PTR)) = -#ifndef coff_bfd_print_private_bfd_data - NULL; -#else - coff_bfd_print_private_bfd_data; -#undef coff_bfd_print_private_bfd_data -#endif - -static boolean pe_print_private_bfd_data PARAMS ((bfd *, PTR)); -#define coff_bfd_print_private_bfd_data pe_print_private_bfd_data - -static boolean (*pe_saved_coff_bfd_copy_private_bfd_data) - PARAMS ((bfd *, bfd *)) = -#ifndef coff_bfd_copy_private_bfd_data - NULL; -#else - coff_bfd_copy_private_bfd_data; -#undef coff_bfd_copy_private_bfd_data -#endif - -static boolean pe_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *)); -#define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data - -#define coff_mkobject pe_mkobject -#define coff_mkobject_hook pe_mkobject_hook - -#ifndef NO_COFF_RELOCS -static void coff_swap_reloc_in PARAMS ((bfd *, PTR, PTR)); -static unsigned int coff_swap_reloc_out PARAMS ((bfd *, PTR, PTR)); -#endif -static void coff_swap_filehdr_in PARAMS ((bfd *, PTR, PTR)); -static void coff_swap_scnhdr_in PARAMS ((bfd *, PTR, PTR)); -static boolean pe_mkobject PARAMS ((bfd *)); -static PTR pe_mkobject_hook PARAMS ((bfd *, PTR, PTR)); - -#ifdef COFF_IMAGE_WITH_PE -/* This structure contains static variables used by the ILF code. */ -typedef asection * asection_ptr; - -typedef struct -{ - bfd * abfd; - bfd_byte * data; - struct bfd_in_memory * bim; - unsigned short magic; - - arelent * reltab; - unsigned int relcount; - - coff_symbol_type * sym_cache; - coff_symbol_type * sym_ptr; - unsigned int sym_index; - - unsigned int * sym_table; - unsigned int * table_ptr; - - combined_entry_type * native_syms; - combined_entry_type * native_ptr; - - coff_symbol_type ** sym_ptr_table; - coff_symbol_type ** sym_ptr_ptr; - - unsigned int sec_index; - - char * string_table; - char * string_ptr; - char * end_string_ptr; - - SYMENT * esym_table; - SYMENT * esym_ptr; - - struct internal_reloc * int_reltab; -} -pe_ILF_vars; - -static asection_ptr pe_ILF_make_a_section PARAMS ((pe_ILF_vars *, const char *, unsigned int, flagword)); -static void pe_ILF_make_a_reloc PARAMS ((pe_ILF_vars *, bfd_vma, bfd_reloc_code_real_type, asection_ptr)); -static void pe_ILF_make_a_symbol PARAMS ((pe_ILF_vars *, const char *, const char *, asection_ptr, flagword)); -static void pe_ILF_save_relocs PARAMS ((pe_ILF_vars *, asection_ptr)); -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)); -static boolean pe_ILF_build_a_bfd PARAMS ((bfd *, unsigned short, bfd_byte *, bfd_byte *, unsigned int, unsigned int)); -static const bfd_target * pe_ILF_object_p PARAMS ((bfd *)); -static const bfd_target * pe_bfd_object_p PARAMS ((bfd *)); -#endif /* COFF_IMAGE_WITH_PE */ - -/**********************************************************************/ - -#ifndef NO_COFF_RELOCS -static void -coff_swap_reloc_in (abfd, src, dst) - bfd *abfd; - PTR src; - PTR dst; -{ - RELOC *reloc_src = (RELOC *) src; - struct internal_reloc *reloc_dst = (struct internal_reloc *) dst; - - reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr); - reloc_dst->r_symndx = bfd_h_get_signed_32(abfd, (bfd_byte *) reloc_src->r_symndx); - - reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type); - -#ifdef SWAP_IN_RELOC_OFFSET - reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd, - (bfd_byte *) reloc_src->r_offset); -#endif -} - -static unsigned int -coff_swap_reloc_out (abfd, src, dst) - bfd *abfd; - PTR src; - PTR dst; -{ - struct internal_reloc *reloc_src = (struct internal_reloc *)src; - struct external_reloc *reloc_dst = (struct external_reloc *)dst; - bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr); - bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx); - - bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *) - reloc_dst->r_type); - -#ifdef SWAP_OUT_RELOC_OFFSET - SWAP_OUT_RELOC_OFFSET(abfd, - reloc_src->r_offset, - (bfd_byte *) reloc_dst->r_offset); -#endif -#ifdef SWAP_OUT_RELOC_EXTRA - SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst); -#endif - return RELSZ; -} -#endif /* not NO_COFF_RELOCS */ - -static void -coff_swap_filehdr_in (abfd, src, dst) - bfd *abfd; - PTR src; - PTR dst; -{ - FILHDR *filehdr_src = (FILHDR *) src; - struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst; - filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic); - filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns); - filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat); - - filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms); - filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags); - filehdr_dst->f_symptr = bfd_h_get_32 (abfd, (bfd_byte *) filehdr_src->f_symptr); - - /* Other people's tools sometimes generate headers with an nsyms but - a zero symptr. */ - if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0) - { - filehdr_dst->f_nsyms = 0; - filehdr_dst->f_flags |= F_LSYMS; - } - - filehdr_dst->f_opthdr = bfd_h_get_16(abfd, - (bfd_byte *)filehdr_src-> f_opthdr); -} - -#ifdef COFF_IMAGE_WITH_PE -# define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out -#else -# define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out -#endif - -static void -coff_swap_scnhdr_in (abfd, ext, in) - bfd *abfd; - PTR ext; - PTR in; -{ - SCNHDR *scnhdr_ext = (SCNHDR *) ext; - struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in; - - memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name)); - scnhdr_int->s_vaddr = - GET_SCNHDR_VADDR (abfd, (bfd_byte *) scnhdr_ext->s_vaddr); - scnhdr_int->s_paddr = - GET_SCNHDR_PADDR (abfd, (bfd_byte *) scnhdr_ext->s_paddr); - scnhdr_int->s_size = - GET_SCNHDR_SIZE (abfd, (bfd_byte *) scnhdr_ext->s_size); - scnhdr_int->s_scnptr = - GET_SCNHDR_SCNPTR (abfd, (bfd_byte *) scnhdr_ext->s_scnptr); - scnhdr_int->s_relptr = - GET_SCNHDR_RELPTR (abfd, (bfd_byte *) scnhdr_ext->s_relptr); - scnhdr_int->s_lnnoptr = - GET_SCNHDR_LNNOPTR (abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr); - scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags); - - /* MS handles overflow of line numbers by carrying into the reloc - field (it appears). Since it's supposed to be zero for PE - *IMAGE* format, that's safe. This is still a bit iffy. */ -#ifdef COFF_IMAGE_WITH_PE - scnhdr_int->s_nlnno = - (bfd_h_get_16 (abfd, (bfd_byte *) scnhdr_ext->s_nlnno) - + (bfd_h_get_16 (abfd, (bfd_byte *) scnhdr_ext->s_nreloc) << 16)); - scnhdr_int->s_nreloc = 0; -#else - scnhdr_int->s_nreloc = bfd_h_get_16 (abfd, - (bfd_byte *) scnhdr_ext->s_nreloc); - scnhdr_int->s_nlnno = bfd_h_get_16 (abfd, - (bfd_byte *) scnhdr_ext->s_nlnno); -#endif - - if (scnhdr_int->s_vaddr != 0) - { - scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase; - scnhdr_int->s_vaddr &= 0xffffffff; - } - -#ifndef COFF_NO_HACK_SCNHDR_SIZE - /* If this section holds uninitialized data, use the virtual size - (stored in s_paddr) instead of the physical size. */ - if ((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0 - && (scnhdr_int->s_paddr > 0)) - { - scnhdr_int->s_size = scnhdr_int->s_paddr; - /* This code used to set scnhdr_int->s_paddr to 0. However, - coff_set_alignment_hook stores s_paddr in virt_size, which - only works if it correctly holds the virtual size of the - section. */ - } -#endif -} - -static boolean -pe_mkobject (abfd) - bfd * abfd; -{ - pe_data_type *pe; - abfd->tdata.pe_obj_data = - (struct pe_tdata *) bfd_zalloc (abfd, sizeof (pe_data_type)); - - if (abfd->tdata.pe_obj_data == 0) - return false; - - pe = pe_data (abfd); - - pe->coff.pe = 1; - - /* in_reloc_p is architecture dependent. */ - pe->in_reloc_p = in_reloc_p; - -#ifdef PEI_FORCE_MINIMUM_ALIGNMENT - pe->force_minimum_alignment = 1; -#endif -#ifdef PEI_TARGET_SUBSYSTEM - pe->target_subsystem = PEI_TARGET_SUBSYSTEM; -#endif - - return true; -} - -/* Create the COFF backend specific information. */ -static PTR -pe_mkobject_hook (abfd, filehdr, aouthdr) - bfd * abfd; - PTR filehdr; - PTR aouthdr ATTRIBUTE_UNUSED; -{ - struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; - pe_data_type *pe; - - if (pe_mkobject (abfd) == false) - return NULL; - - pe = pe_data (abfd); - pe->coff.sym_filepos = internal_f->f_symptr; - /* These members communicate important constants about the symbol - table to GDB's symbol-reading code. These `constants' - unfortunately vary among coff implementations... */ - pe->coff.local_n_btmask = N_BTMASK; - pe->coff.local_n_btshft = N_BTSHFT; - pe->coff.local_n_tmask = N_TMASK; - pe->coff.local_n_tshift = N_TSHIFT; - pe->coff.local_symesz = SYMESZ; - pe->coff.local_auxesz = AUXESZ; - pe->coff.local_linesz = LINESZ; - - pe->coff.timestamp = internal_f->f_timdat; - - obj_raw_syment_count (abfd) = - obj_conv_table_size (abfd) = - internal_f->f_nsyms; - - pe->real_flags = internal_f->f_flags; - - if ((internal_f->f_flags & F_DLL) != 0) - pe->dll = 1; - - if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0) - abfd->flags |= HAS_DEBUG; - -#ifdef COFF_IMAGE_WITH_PE - if (aouthdr) - pe->pe_opthdr = ((struct internal_aouthdr *)aouthdr)->pe; -#endif - -#ifdef ARM - if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags)) - coff_data (abfd) ->flags = 0; -#endif - - return (PTR) pe; -} - -static boolean -pe_print_private_bfd_data (abfd, vfile) - bfd *abfd; - PTR vfile; -{ - FILE *file = (FILE *) vfile; - - if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile)) - return false; - - if (pe_saved_coff_bfd_print_private_bfd_data != NULL) - { - fputc ('\n', file); - - return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile); - } - - return true; -} - -/* Copy any private info we understand from the input bfd - to the output bfd. */ - -static boolean -pe_bfd_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd, *obfd; -{ - if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd)) - return false; - - if (pe_saved_coff_bfd_copy_private_bfd_data) - return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd); - - return true; -} - -#define coff_bfd_copy_private_section_data \ - _bfd_XX_bfd_copy_private_section_data - -#define coff_get_symbol_info _bfd_XX_get_symbol_info - -#ifdef COFF_IMAGE_WITH_PE - -/* Code to handle Microsoft's Image Library Format. - Also known as LINK6 format. - Documentation about this format can be found at: - - http://msdn.microsoft.com/library/specs/pecoff_section8.htm */ - -/* The following constants specify the sizes of the various data - structures that we have to create in order to build a bfd describing - an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6 - and SIZEOF_IDATA7 below is to allow for the possibility that we might - need a padding byte in order to ensure 16 bit alignment for the section's - contents. - - The value for SIZEOF_ILF_STRINGS is computed as follows: - - There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters - per symbol for their names (longest section name is .idata$x). - - There will be two symbols for the imported value, one the symbol name - and one with _imp__ prefixed. Allowing for the terminating nul's this - is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll). - - The strings in the string table must start STRING__SIZE_SIZE bytes into - the table in order to for the string lookup code in coffgen/coffcode to - work. */ -#define NUM_ILF_RELOCS 8 -#define NUM_ILF_SECTIONS 6 -#define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS) - -#define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache)) -#define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table)) -#define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms)) -#define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table)) -#define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table)) -#define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab)) -#define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab)) -#define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \ - + 21 + strlen (source_dll) \ - + NUM_ILF_SECTIONS * 9 \ - + STRING_SIZE_SIZE) -#define SIZEOF_IDATA2 (5 * 4) -#define SIZEOF_IDATA4 (1 * 4) -#define SIZEOF_IDATA5 (1 * 4) -#define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1) -#define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1) -#define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata)) - -#define ILF_DATA_SIZE \ - sizeof (* vars.bim) \ - + SIZEOF_ILF_SYMS \ - + SIZEOF_ILF_SYM_TABLE \ - + SIZEOF_ILF_NATIVE_SYMS \ - + SIZEOF_ILF_SYM_PTR_TABLE \ - + SIZEOF_ILF_EXT_SYMS \ - + SIZEOF_ILF_RELOCS \ - + SIZEOF_ILF_INT_RELOCS \ - + SIZEOF_ILF_STRINGS \ - + SIZEOF_IDATA2 \ - + SIZEOF_IDATA4 \ - + SIZEOF_IDATA5 \ - + SIZEOF_IDATA6 \ - + SIZEOF_IDATA7 \ - + SIZEOF_ILF_SECTIONS \ - + MAX_TEXT_SECTION_SIZE - -/* Create an empty relocation against the given symbol. */ -static void -pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars, - bfd_vma address, - bfd_reloc_code_real_type reloc, - struct symbol_cache_entry ** sym, - unsigned int sym_index) -{ - arelent * entry; - struct internal_reloc * internal; - - entry = vars->reltab + vars->relcount; - internal = vars->int_reltab + vars->relcount; - - entry->address = address; - entry->addend = 0; - entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc); - entry->sym_ptr_ptr = sym; - - internal->r_vaddr = address; - internal->r_symndx = sym_index; - internal->r_type = entry->howto->type; -#if 0 /* These fields do not need to be initialised. */ - internal->r_size = 0; - internal->r_extern = 0; - internal->r_offset = 0; -#endif - - vars->relcount ++; - - BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS); -} - -/* Create an empty relocation against the given section. */ -static void -pe_ILF_make_a_reloc (pe_ILF_vars * vars, - bfd_vma address, - bfd_reloc_code_real_type reloc, - asection_ptr sec) -{ - pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr, - coff_section_data (vars->abfd, sec)->i); -} - -/* Move the queued relocs into the given section. */ -static void -pe_ILF_save_relocs (pe_ILF_vars * vars, - asection_ptr sec) -{ - /* Make sure that there is somewhere to store the internal relocs. */ - if (coff_section_data (vars->abfd, sec) == NULL) - /* We should probably return an error indication here. */ - abort (); - - coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab; - coff_section_data (vars->abfd, sec)->keep_relocs = true; - - sec->relocation = vars->reltab; - sec->reloc_count = vars->relcount; - sec->flags |= SEC_RELOC; - - vars->reltab += vars->relcount; - vars->int_reltab += vars->relcount; - vars->relcount = 0; - - BFD_ASSERT ((bfd_byte *)vars->int_reltab < (bfd_byte *)vars->string_table); -} - -/* Create a global symbol and add it to the relevant tables. */ -static void -pe_ILF_make_a_symbol (pe_ILF_vars * vars, - const char * prefix, - const char * symbol_name, - asection_ptr section, - flagword extra_flags) -{ - coff_symbol_type * sym; - combined_entry_type * ent; - SYMENT * esym; - unsigned short sclass; - - if (extra_flags & BSF_LOCAL) - sclass = C_STAT; - else - sclass = C_EXT; - -#ifdef THUMBPEMAGIC - if (vars->magic == THUMBPEMAGIC) - { - if (extra_flags & BSF_FUNCTION) - sclass = C_THUMBEXTFUNC; - else if (extra_flags & BSF_LOCAL) - sclass = C_THUMBSTAT; - else - sclass = C_THUMBEXT; - } -#endif - - BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS); - - sym = vars->sym_ptr; - ent = vars->native_ptr; - esym = vars->esym_ptr; - - /* Copy the symbol's name into the string table. */ - sprintf (vars->string_ptr, "%s%s", prefix, symbol_name); - - if (section == NULL) - section = (asection_ptr) & bfd_und_section; - - /* Initialise the external symbol. */ - bfd_h_put_32 (vars->abfd, vars->string_ptr - vars->string_table, (bfd_byte *) esym->e.e.e_offset); - bfd_h_put_16 (vars->abfd, section->target_index, (bfd_byte *) esym->e_scnum); - esym->e_sclass[0] = sclass; - - /* The following initialisations are unnecessary - the memory is - zero initialised. They are just kept here as reminders. */ -#if 0 - esym->e.e.e_zeroes = 0; - esym->e_value = 0; - esym->e_type = T_NULL; - esym->e_numaux = 0; -#endif - - /* Initialise the internal symbol structure. */ - ent->u.syment.n_sclass = sclass; - ent->u.syment.n_scnum = section->target_index; - ent->u.syment._n._n_n._n_offset = (long) sym; - -#if 0 /* See comment above. */ - ent->u.syment.n_value = 0; - ent->u.syment.n_flags = 0; - ent->u.syment.n_type = T_NULL; - ent->u.syment.n_numaux = 0; - ent->fix_value = 0; -#endif - - sym->symbol.the_bfd = vars->abfd; - sym->symbol.name = vars->string_ptr; - sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags; - sym->symbol.section = section; - sym->native = ent; - -#if 0 /* See comment above. */ - sym->symbol.value = 0; - sym->symbol.udata.i = 0; - sym->done_lineno = false; - sym->lineno = NULL; -#endif - - * vars->table_ptr = vars->sym_index; - * vars->sym_ptr_ptr = sym; - - /* Adjust pointers for the next symbol. */ - vars->sym_index ++; - vars->sym_ptr ++; - vars->sym_ptr_ptr ++; - vars->table_ptr ++; - vars->native_ptr ++; - vars->esym_ptr ++; - vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1; - - BFD_ASSERT (vars->string_ptr < vars->end_string_ptr); -} - -/* Create a section. */ -static asection_ptr -pe_ILF_make_a_section (pe_ILF_vars * vars, - const char * name, - unsigned int size, - flagword extra_flags) -{ - asection_ptr sec; - flagword flags; - - sec = bfd_make_section_old_way (vars->abfd, name); - if (sec == NULL) - return NULL; - - flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY; - - bfd_set_section_flags (vars->abfd, sec, flags | extra_flags); - - bfd_set_section_alignment (vars->abfd, sec, 2); - - /* Check that we will not run out of space. */ - BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size); - - /* Set the section size and contents. The actual - contents are filled in by our parent. */ - bfd_set_section_size (vars->abfd, sec, size); - sec->contents = vars->data; - sec->target_index = vars->sec_index ++; - - /* Advance data pointer in the vars structure. */ - vars->data += size; - - /* Skip the padding byte if it was not needed. - The logic here is that if the string length is odd, - then the entire string length, including the null byte, - is even and so the extra, padding byte, is not needed. */ - if (size & 1) - vars->data --; - - /* Create a coff_section_tdata structure for our use. */ - sec->used_by_bfd = (struct coff_section_tdata *) vars->data; - vars->data += sizeof (struct coff_section_tdata); - - BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size); - - /* Create a symbol to refer to this section. */ - pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL); - - /* Cache the index to the symbol in the coff_section_data structure. */ - coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1; - - return sec; -} - -/* This structure contains the code that goes into the .text section - in order to perform a jump into the DLL lookup table. The entries - in the table are index by the magic number used to represent the - machine type in the PE file. The contents of the data[] arrays in - these entries are stolen from the jtab[] arrays in ld/pe-dll.c. - The SIZE field says how many bytes in the DATA array are actually - used. The OFFSET field says where in the data array the address - of the .idata$5 section should be placed. */ -#define MAX_TEXT_SECTION_SIZE 32 - -typedef struct -{ - unsigned short magic; - unsigned char data[MAX_TEXT_SECTION_SIZE]; - unsigned int size; - unsigned int offset; -} -jump_table; - -static jump_table jtab[] = -{ -#ifdef I386MAGIC - { I386MAGIC, - { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }, - 8, 2 - }, -#endif - -#ifdef MC68MAGIC - { MC68MAGIC, { /* XXX fill me in */ }, 0, 0 }, -#endif -#ifdef MIPS_ARCH_MAGIC_WINCE - { MIPS_ARCH_MAGIC_WINCE, - { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, - 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 }, - 16, 0 - }, -#endif - -#ifdef SH_ARCH_MAGIC_WINCE - { SH_ARCH_MAGIC_WINCE, - { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, - 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 }, - 12, 8 - }, -#endif - -#ifdef ARMPEMAGIC - { ARMPEMAGIC, - { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0, - 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00}, - 12, 8 - }, -#endif - -#ifdef THUMBPEMAGIC - { THUMBPEMAGIC, - { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46, - 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 }, - 16, 12 - }, -#endif - { 0, { 0 }, 0, 0 } -}; - -#ifndef NUM_ENTRIES -#define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0]) -#endif - -/* Build a full BFD from the information supplied in a ILF object. */ -static boolean -pe_ILF_build_a_bfd (bfd * abfd, - unsigned short magic, - bfd_byte * symbol_name, - bfd_byte * source_dll, - unsigned int ordinal, - unsigned int types) -{ - bfd_byte * ptr; - pe_ILF_vars vars; - struct internal_filehdr internal_f; - unsigned int import_type; - unsigned int import_name_type; - asection_ptr id4, id5, id6 = NULL, text = NULL; - coff_symbol_type ** imp_sym; - unsigned int imp_index; - - /* Decode and verify the types field of the ILF structure. */ - import_type = types & 0x3; - import_name_type = (types & 0x1c) >> 2; - - switch (import_type) - { - case IMPORT_CODE: - case IMPORT_DATA: - break; - - case IMPORT_CONST: - /* XXX code yet to be written. */ - _bfd_error_handler (_("%s: Unhandled import type; %x"), - bfd_get_filename (abfd), import_type); - return false; - - default: - _bfd_error_handler (_("%s: Unrecognised import type; %x"), - bfd_get_filename (abfd), import_type); - return false; - } - - switch (import_name_type) - { - case IMPORT_ORDINAL: - case IMPORT_NAME: - case IMPORT_NAME_NOPREFIX: - case IMPORT_NAME_UNDECORATE: - break; - - default: - _bfd_error_handler (_("%s: Unrecognised import name type; %x"), - bfd_get_filename (abfd), import_name_type); - return false; - } - - /* Initialise local variables. - - Note these are kept in a structure rather than being - declared as statics since bfd frowns on global variables. - - We are going to construct the contents of the BFD in memory, - so allocate all the space that we will need right now. */ - ptr = bfd_zalloc (abfd, ILF_DATA_SIZE); - if (ptr == NULL) - return false; - - /* Create a bfd_in_memory structure. */ - vars.bim = (struct bfd_in_memory *) ptr; - vars.bim->buffer = ptr; - vars.bim->size = ILF_DATA_SIZE; - ptr += sizeof (* vars.bim); - - /* Initialise the pointers to regions of the memory and the - other contents of the pe_ILF_vars structure as well. */ - vars.sym_cache = (coff_symbol_type *) ptr; - vars.sym_ptr = (coff_symbol_type *) ptr; - vars.sym_index = 0; - ptr += SIZEOF_ILF_SYMS; - - vars.sym_table = (unsigned int *) ptr; - vars.table_ptr = (unsigned int *) ptr; - ptr += SIZEOF_ILF_SYM_TABLE; - - vars.native_syms = (combined_entry_type *) ptr; - vars.native_ptr = (combined_entry_type *) ptr; - ptr += SIZEOF_ILF_NATIVE_SYMS; - - vars.sym_ptr_table = (coff_symbol_type **) ptr; - vars.sym_ptr_ptr = (coff_symbol_type **) ptr; - ptr += SIZEOF_ILF_SYM_PTR_TABLE; - - vars.esym_table = (SYMENT *) ptr; - vars.esym_ptr = (SYMENT *) ptr; - ptr += SIZEOF_ILF_EXT_SYMS; - - vars.reltab = (arelent *) ptr; - vars.relcount = 0; - ptr += SIZEOF_ILF_RELOCS; - - vars.int_reltab = (struct internal_reloc *) ptr; - ptr += SIZEOF_ILF_INT_RELOCS; - - vars.string_table = ptr; - vars.string_ptr = ptr + STRING_SIZE_SIZE; - ptr += SIZEOF_ILF_STRINGS; - vars.end_string_ptr = ptr; - - /* The remaining space in bim->buffer is used - by the pe_ILF_make_a_section() function. */ - vars.data = ptr; - vars.abfd = abfd; - vars.sec_index = 0; - vars.magic = magic; - - /* Create the initial .idata$<n> sections: - [.idata$2: Import Directory Table -- not needed] - .idata$4: Import Lookup Table - .idata$5: Import Address Table - - Note we do not create a .idata$3 section as this is - created for us by the linker script. */ - id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0); - id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0); - if (id4 == NULL || id5 == NULL) - return false; - - /* Fill in the contents of these sections. */ - if (import_name_type == IMPORT_ORDINAL) - { - if (ordinal == 0) - /* XXX - treat as IMPORT_NAME ??? */ - abort (); - - * (unsigned int *) id4->contents = ordinal | 0x80000000; - * (unsigned int *) id5->contents = ordinal | 0x80000000; - } - else - { - char * symbol; - - /* Create .idata$6 - the Hint Name Table. */ - id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0); - if (id6 == NULL) - return false; - - /* If necessary, trim the import symbol name. */ - symbol = symbol_name; - - if (import_name_type != IMPORT_NAME) - /* Skip any prefix in symbol_name. */ - while (*symbol == '@' || * symbol == '?' || * symbol == '_') - ++ symbol; - - if (import_name_type == IMPORT_NAME_UNDECORATE) - { - /* Truncate at the first '@' */ - while (* symbol != 0 && * symbol != '@') - symbol ++; - - * symbol = 0; - } - - id6->contents[0] = ordinal & 0xff; - id6->contents[1] = ordinal >> 8; - - strcpy (id6->contents + 2, symbol); - } - - if (import_name_type != IMPORT_ORDINAL) - { - pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6); - pe_ILF_save_relocs (& vars, id4); - - pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_RVA, id6); - pe_ILF_save_relocs (& vars, id5); - } - - /* Create extra sections depending upon the type of import we are dealing with. */ - switch (import_type) - { - int i; - - case IMPORT_CODE: - /* Create a .text section. - First we need to look up its contents in the jump table. */ - for (i = NUM_ENTRIES (jtab); i--;) - { - if (jtab[i].size == 0) - continue; - if (jtab[i].magic == magic) - break; - } - /* If we did not find a matching entry something is wrong. */ - if (i < 0) - abort (); - - /* Create the .text section. */ - text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE); - if (text == NULL) - return false; - - /* Copy in the jump code. */ - memcpy (text->contents, jtab[i].data, jtab[i].size); - - /* Create an import symbol. */ - pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0); - imp_sym = vars.sym_ptr_ptr - 1; - imp_index = vars.sym_index - 1; - - /* Create a reloc for the data in the text section. */ -#ifdef MIPS_ARCH_MAGIC_WINCE - if (magic == MIPS_ARCH_MAGIC_WINCE) - { - pe_ILF_make_a_symbol_reloc (& vars, 0, BFD_RELOC_HI16_S, - (struct symbol_cache_entry **) imp_sym, imp_index); - pe_ILF_make_a_reloc (& vars, 0, BFD_RELOC_LO16, text); - pe_ILF_make_a_symbol_reloc (& vars, 4, BFD_RELOC_LO16, - (struct symbol_cache_entry **) imp_sym, imp_index); - } - else -#endif - pe_ILF_make_a_symbol_reloc (& vars, jtab[i].offset, BFD_RELOC_32, - (asymbol **) imp_sym, imp_index); - - pe_ILF_save_relocs (& vars, text); - break; - - case IMPORT_DATA: - break; - - default: - /* XXX code not yet written. */ - abort (); - } - - /* Initialise the bfd. */ - memset (& internal_f, 0, sizeof (internal_f)); - - internal_f.f_magic = magic; - internal_f.f_symptr = 0; - internal_f.f_nsyms = 0; - internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */ - - if ( ! bfd_set_start_address (abfd, 0) - || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f)) - return false; - - if (bfd_coff_mkobject_hook (abfd, (PTR) & internal_f, NULL) == NULL) - return false; - - coff_data (abfd)->pe = 1; -#ifdef THUMBPEMAGIC - if (vars.magic == THUMBPEMAGIC) - /* Stop some linker warnings about thumb code not supporting interworking. */ - coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET; -#endif - - /* Switch from file contents to memory contents. */ - bfd_cache_close (abfd); - - abfd->iostream = (PTR) vars.bim; - abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */; - abfd->where = 0; - obj_sym_filepos (abfd) = 0; - - /* Now create a symbol describing the imported value. */ - switch (import_type) - { - bfd_byte * ptr; - - case IMPORT_CODE: - pe_ILF_make_a_symbol (& vars, "", symbol_name, text, - BSF_NOT_AT_END | BSF_FUNCTION); - - /* Create an import symbol for the DLL, without the - .dll suffix. */ - ptr = strrchr (source_dll, '.'); - if (ptr) - * ptr = 0; - pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0); - if (ptr) - * ptr = '.'; - break; - - case IMPORT_DATA: - /* Nothing to do here. */ - break; - - default: - /* XXX code not yet written. */ - abort (); - } - - /* Point the bfd at the symbol table. */ - obj_symbols (abfd) = vars.sym_cache; - bfd_get_symcount (abfd) = vars.sym_index; - - obj_raw_syments (abfd) = vars.native_syms; - obj_raw_syment_count (abfd) = vars.sym_index; - - obj_coff_external_syms (abfd) = (PTR) vars.esym_table; - obj_coff_keep_syms (abfd) = true; - - obj_convert (abfd) = vars.sym_table; - obj_conv_table_size (abfd) = vars.sym_index; - - obj_coff_strings (abfd) = vars.string_table; - obj_coff_keep_strings (abfd) = true; - - abfd->flags |= HAS_SYMS; - - return true; -} - -/* We have detected a Image Library Format archive element. - Decode the element and return the appropriate target. */ -static const bfd_target * -pe_ILF_object_p (bfd * abfd) -{ - bfd_byte buffer[16]; - bfd_byte * ptr; - bfd_byte * symbol_name; - bfd_byte * source_dll; - unsigned int machine; - unsigned long size; - unsigned int ordinal; - unsigned int types; - unsigned short magic; - - /* Upon entry the first four buyes of the ILF header have - already been read. Now read the rest of the header. */ - if (bfd_read (buffer, 1, 16, abfd) != 16) - return NULL; - - ptr = buffer; - - /* We do not bother to check the version number. - version = bfd_h_get_16 (abfd, ptr); */ - ptr += 2; - - machine = bfd_h_get_16 (abfd, ptr); - ptr += 2; - - /* Check that the machine type is recognised. */ - magic = 0; - - switch (machine) - { - case IMAGE_FILE_MACHINE_UNKNOWN: - case IMAGE_FILE_MACHINE_ALPHA: - case IMAGE_FILE_MACHINE_ALPHA64: - case IMAGE_FILE_MACHINE_IA64: - break; - - case IMAGE_FILE_MACHINE_I386: -#ifdef I386MAGIC - magic = I386MAGIC; -#endif - break; - - case IMAGE_FILE_MACHINE_M68K: -#ifdef MC68AGIC - magic = MC68MAGIC; -#endif - break; - - case IMAGE_FILE_MACHINE_R3000: - case IMAGE_FILE_MACHINE_R4000: - case IMAGE_FILE_MACHINE_R10000: - - case IMAGE_FILE_MACHINE_MIPS16: - case IMAGE_FILE_MACHINE_MIPSFPU: - case IMAGE_FILE_MACHINE_MIPSFPU16: -#ifdef MIPS_ARCH_MAGIC_WINCE - magic = MIPS_ARCH_MAGIC_WINCE; -#endif - break; - - case IMAGE_FILE_MACHINE_SH3: - case IMAGE_FILE_MACHINE_SH4: -#ifdef SH_ARCH_MAGIC_WINCE - magic = SH_ARCH_MAGIC_WINCE; -#endif - break; - - case IMAGE_FILE_MACHINE_ARM: -#ifdef ARMPEMAGIC - magic = ARMPEMAGIC; -#endif - break; - - case IMAGE_FILE_MACHINE_THUMB: -#ifdef THUMBPEMAGIC - { - extern const bfd_target TARGET_LITTLE_SYM; - - if (abfd->xvec == & TARGET_LITTLE_SYM) - magic = THUMBPEMAGIC; - } -#endif - break; - - case IMAGE_FILE_MACHINE_POWERPC: - /* We no longer support PowerPC. */ - default: - _bfd_error_handler - ( -_("%s: Unrecognised machine type (0x%x) in Import Library Format archive"), - bfd_get_filename (abfd), machine); - bfd_set_error (bfd_error_malformed_archive); - - return NULL; - break; - } - - if (magic == 0) - { - _bfd_error_handler - ( -_("%s: Recognised but unhandled machine type (0x%x) in Import Library Format archive"), - bfd_get_filename (abfd), machine); - bfd_set_error (bfd_error_wrong_format); - - return NULL; - } - - /* We do not bother to check the date. - date = bfd_h_get_32 (abfd, ptr); */ - ptr += 4; - - size = bfd_h_get_32 (abfd, ptr); - ptr += 4; - - if (size == 0) - { - _bfd_error_handler - (_("%s: size field is zero in Import Library Format header"), - bfd_get_filename (abfd)); - bfd_set_error (bfd_error_malformed_archive); - - return NULL; - } - - ordinal = bfd_h_get_16 (abfd, ptr); - ptr += 2; - - types = bfd_h_get_16 (abfd, ptr); - /* ptr += 2; */ - - /* Now read in the two strings that follow. */ - ptr = bfd_alloc (abfd, size); - if (ptr == NULL) - return NULL; - - if (bfd_read (ptr, 1, size, abfd) != size) - return NULL; - - symbol_name = ptr; - source_dll = ptr + strlen (ptr) + 1; - - /* Verify that the strings are null terminated. */ - if (ptr[size - 1] != 0 || ((unsigned long) (source_dll - ptr) >= size)) - { - _bfd_error_handler - (_("%s: string not null terminated in ILF object file."), - bfd_get_filename (abfd)); - bfd_set_error (bfd_error_malformed_archive); - - return NULL; - } - - /* Now construct the bfd. */ - if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name, - source_dll, ordinal, types)) - return NULL; - - return abfd->xvec; -} - -static const bfd_target * -pe_bfd_object_p (bfd * abfd) -{ - bfd_byte buffer[4]; - struct external_PEI_DOS_hdr dos_hdr; - struct external_PEI_IMAGE_hdr image_hdr; - file_ptr offset; - - /* Detect if this a Microsoft Import Library Format element. */ - if (bfd_seek (abfd, 0x00, SEEK_SET) != 0 - || bfd_read (buffer, 1, 4, abfd) != 4) - { - if (bfd_get_error () != bfd_error_system_call) - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - if (bfd_h_get_32 (abfd, buffer) == 0xffff0000) - return pe_ILF_object_p (abfd); - - if (bfd_seek (abfd, 0x00, SEEK_SET) != 0 - || bfd_read (&dos_hdr, 1, sizeof (dos_hdr), abfd) - != sizeof (dos_hdr)) - { - if (bfd_get_error () != bfd_error_system_call) - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - /* There are really two magic numbers involved; the magic number - that says this is a NT executable (PEI) and the magic number that - determines the architecture. The former is DOSMAGIC, stored in - the e_magic field. The latter is stored in the f_magic field. - If the NT magic number isn't valid, the architecture magic number - could be mimicked by some other field (specifically, the number - of relocs in section 3). Since this routine can only be called - correctly for a PEI file, check the e_magic number here, and, if - it doesn't match, clobber the f_magic number so that we don't get - a false match. */ - if (bfd_h_get_16 (abfd, (bfd_byte *) dos_hdr.e_magic) != DOSMAGIC) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - offset = bfd_h_get_32 (abfd, (bfd_byte *) dos_hdr.e_lfanew); - if (bfd_seek (abfd, (file_ptr) offset, SEEK_SET) != 0 - || bfd_read (&image_hdr, 1, sizeof (image_hdr), abfd) - != sizeof (image_hdr)) - { - if (bfd_get_error () != bfd_error_system_call) - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - if (bfd_h_get_32 (abfd, (bfd_byte *) image_hdr.nt_signature) - != 0x4550) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - /* Here is the hack. coff_object_p wants to read filhsz bytes to - pick up the COFF header for PE, see "struct external_PEI_filehdr" - in include/coff/pe.h. We adjust so that that will work. */ - if (bfd_seek (abfd, - (file_ptr) (offset - sizeof (dos_hdr)), - SEEK_SET) - != 0) - { - if (bfd_get_error () != bfd_error_system_call) - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - return coff_object_p (abfd); -} - -#define coff_object_p pe_bfd_object_p -#endif /* COFF_IMAGE_WITH_PE */ |