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7389debf1c
(nlm_mangle_relocs_func): New macro. * nlm32-i386.c (nlm_i386_write_reloc): Rewrote correctly. (nlm_i386_mangle_relocs): New function. * nlmcode.h (nlm_compute_section_file_positions): Move all common symbols into the .bss section. (nlm_set_section_contents): Call the mangle_relocs function. (nlm_write_object_contents): Treat a reloc against any defined symbol as an internal reloc. Fix bug in external reloc counting. Get the offset and debugging type right for .bss symbols. Only output debugging symbols for defined symbols.
2012 lines
62 KiB
C
2012 lines
62 KiB
C
/* NLM (NetWare Loadable Module) executable support for BFD.
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Copyright (C) 1993 Free Software Foundation, Inc.
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Written by Fred Fish @ Cygnus Support, using ELF support as the
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template.
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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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <string.h> /* For strrchr and friends */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libnlm.h"
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/* The functions in this file do not use the names they appear to use.
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This file is actually compiled multiple times, once for each size
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of NLM target we are using. At each size we use a different name,
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constructed by the macro nlmNAME. For example, the function which
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is named nlm_symbol_type below is actually named nlm32_symbol_type
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in the final executable. */
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#define Nlm_External_Fixed_Header NlmNAME(External_Fixed_Header)
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#define Nlm_External_Version_Header NlmNAME(External_Version_Header)
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#define Nlm_External_Copyright_Header NlmNAME(External_Copyright_Header)
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#define Nlm_External_Extended_Header NlmNAME(External_Extended_Header)
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#define Nlm_External_Custom_Header NlmNAME(External_Custom_Header)
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#define nlm_symbol_type nlmNAME(symbol_type)
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#define nlm_get_symtab_upper_bound nlmNAME(get_symtab_upper_bound)
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#define nlm_get_symtab nlmNAME(get_symtab)
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#define nlm_make_empty_symbol nlmNAME(make_empty_symbol)
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#define nlm_print_symbol nlmNAME(print_symbol)
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#define nlm_get_symbol_info nlmNAME(get_symbol_info)
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#define nlm_get_reloc_upper_bound nlmNAME(get_reloc_upper_bound)
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#define nlm_canonicalize_reloc nlmNAME(canonicalize_reloc)
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#define nlm_object_p nlmNAME(object_p)
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#define nlm_set_section_contents nlmNAME(set_section_contents)
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#define nlm_write_object_contents nlmNAME(write_object_contents)
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/* Forward declarations of static functions */
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static boolean add_bfd_section
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PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword));
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static void nlm_swap_fixed_header_in
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PARAMS ((bfd *, Nlm_External_Fixed_Header *, Nlm_Internal_Fixed_Header *));
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static void nlm_swap_fixed_header_out
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PARAMS ((bfd *, Nlm_Internal_Fixed_Header *, Nlm_External_Fixed_Header *));
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static boolean nlm_swap_variable_header_in
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PARAMS ((bfd *));
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static boolean nlm_swap_variable_header_out
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PARAMS ((bfd *));
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static boolean find_nonzero
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PARAMS ((PTR, size_t));
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static boolean nlm_swap_auxiliary_headers_in
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PARAMS ((bfd *));
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static boolean nlm_swap_auxiliary_headers_out
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PARAMS ((bfd *));
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static boolean nlm_slurp_symbol_table
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PARAMS ((bfd *));
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static boolean nlm_slurp_reloc_fixups
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PARAMS ((bfd *));
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static boolean nlm_compute_section_file_positions
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PARAMS ((bfd *));
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static int nlm_external_reloc_compare
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PARAMS ((const void *, const void *));
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/* Should perhaps use put_offset, put_word, etc. For now, the two versions
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can be handled by explicitly specifying 32 bits or "the long type". */
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#if ARCH_SIZE == 64
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#define put_word bfd_h_put_64
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#define get_word bfd_h_get_64
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#endif
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#if ARCH_SIZE == 32
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#define put_word bfd_h_put_32
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#define get_word bfd_h_get_32
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#endif
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bfd_target *
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DEFUN (nlm_object_p, (abfd), bfd * abfd)
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{
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Nlm_External_Fixed_Header x_fxdhdr; /* Nlm file header, external form */
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Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
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enum bfd_architecture arch;
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/* Read in the fixed length portion of the NLM header in external format. */
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if (bfd_read ((PTR) &x_fxdhdr, sizeof (x_fxdhdr), 1, abfd) !=
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sizeof (x_fxdhdr))
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{
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bfd_error = system_call_error;
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return (NULL);
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}
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/* Check to see if we have an NLM file by matching the NLM signature. */
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if (strncmp (x_fxdhdr.signature, NLM_SIGNATURE, NLM_SIGNATURE_SIZE) != 0)
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{
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wrong:
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bfd_error = wrong_format;
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return (NULL);
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}
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/* There's no supported way to discover the endianess of an NLM, so test for
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a sane version number after doing byte swapping appropriate for this
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XVEC. (Hack alert!) */
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if (get_word (abfd, (bfd_byte *) x_fxdhdr.version) > 0xFFFF)
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{
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goto wrong;
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}
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/* There's no supported way to check for 32 bit versus 64 bit addresses,
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so ignore this distinction for now. (FIXME) */
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/* Allocate an instance of the nlm_obj_tdata structure and hook it up to
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the tdata pointer in the bfd. */
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nlm_tdata (abfd) = (struct nlm_obj_tdata *)
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bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata));
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if (nlm_tdata (abfd) == NULL)
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{
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bfd_error = no_memory;
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return (NULL);
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}
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/* FIXME: Any `wrong' exits below here will leak memory (tdata). */
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/* Swap in the rest of the fixed length header. */
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i_fxdhdrp = nlm_fixed_header (abfd);
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nlm_swap_fixed_header_in (abfd, &x_fxdhdr, i_fxdhdrp);
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if (!nlm_swap_variable_header_in (abfd)
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|| !nlm_swap_auxiliary_headers_in (abfd)
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|| !add_bfd_section (abfd, NLM_CODE_NAME,
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i_fxdhdrp -> codeImageOffset,
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i_fxdhdrp -> codeImageSize,
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(SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
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| SEC_RELOC))
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|| !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME,
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i_fxdhdrp -> dataImageOffset,
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i_fxdhdrp -> dataImageSize,
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(SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
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| SEC_RELOC))
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|| !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
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(file_ptr) 0,
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i_fxdhdrp -> uninitializedDataSize,
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SEC_ALLOC))
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{
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return (NULL);
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}
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if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0
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|| nlm_fixed_header (abfd)->numberOfExternalReferences != 0)
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abfd->flags |= HAS_RELOC;
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if (nlm_fixed_header (abfd)->numberOfPublics != 0
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|| nlm_fixed_header (abfd)->numberOfDebugRecords != 0)
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abfd->flags |= HAS_SYMS;
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arch = nlm_architecture (abfd);
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if (arch != bfd_arch_unknown)
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bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0);
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return (abfd -> xvec);
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}
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/* Add a section to the bfd. */
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static boolean
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DEFUN (add_bfd_section, (abfd, name, offset, size, flags),
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bfd *abfd AND
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char *name AND
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file_ptr offset AND
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bfd_size_type size AND
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flagword flags)
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{
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asection *newsect;
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newsect = bfd_make_section (abfd, name);
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if (newsect == NULL)
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{
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return (false);
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}
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newsect -> vma = 0; /* NLM's are relocatable. */
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newsect -> _raw_size = size;
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newsect -> filepos = offset;
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newsect -> flags = flags;
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newsect -> alignment_power = bfd_log2 (0); /* FIXME */
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return (true);
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}
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/* Translate an NLM fixed length file header in external format into an NLM
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file header in internal format. */
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static void
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DEFUN (nlm_swap_fixed_header_in, (abfd, src, dst),
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bfd * abfd AND
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Nlm_External_Fixed_Header * src AND
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Nlm_Internal_Fixed_Header * dst)
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{
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memcpy (dst -> signature, src -> signature, NLM_SIGNATURE_SIZE);
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memcpy (dst -> moduleName, src -> moduleName, NLM_MODULE_NAME_SIZE);
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dst -> version =
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get_word (abfd, (bfd_byte *) src -> version);
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dst -> codeImageOffset =
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get_word (abfd, (bfd_byte *) src -> codeImageOffset);
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dst -> codeImageSize =
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get_word (abfd, (bfd_byte *) src -> codeImageSize);
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dst -> dataImageOffset =
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get_word (abfd, (bfd_byte *) src -> dataImageOffset);
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dst -> dataImageSize =
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get_word (abfd, (bfd_byte *) src -> dataImageSize);
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dst -> uninitializedDataSize =
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get_word (abfd, (bfd_byte *) src -> uninitializedDataSize);
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dst -> customDataOffset =
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get_word (abfd, (bfd_byte *) src -> customDataOffset);
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dst -> customDataSize =
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get_word (abfd, (bfd_byte *) src -> customDataSize);
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dst -> moduleDependencyOffset =
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get_word (abfd, (bfd_byte *) src -> moduleDependencyOffset);
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dst -> numberOfModuleDependencies =
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get_word (abfd, (bfd_byte *) src -> numberOfModuleDependencies);
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dst -> relocationFixupOffset =
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get_word (abfd, (bfd_byte *) src -> relocationFixupOffset);
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dst -> numberOfRelocationFixups =
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get_word (abfd, (bfd_byte *) src -> numberOfRelocationFixups);
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dst -> externalReferencesOffset =
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get_word (abfd, (bfd_byte *) src -> externalReferencesOffset);
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dst -> numberOfExternalReferences =
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get_word (abfd, (bfd_byte *) src -> numberOfExternalReferences);
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dst -> publicsOffset =
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get_word (abfd, (bfd_byte *) src -> publicsOffset);
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dst -> numberOfPublics =
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get_word (abfd, (bfd_byte *) src -> numberOfPublics);
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dst -> debugInfoOffset =
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get_word (abfd, (bfd_byte *) src -> debugInfoOffset);
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dst -> numberOfDebugRecords =
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get_word (abfd, (bfd_byte *) src -> numberOfDebugRecords);
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dst -> codeStartOffset =
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get_word (abfd, (bfd_byte *) src -> codeStartOffset);
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dst -> exitProcedureOffset =
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get_word (abfd, (bfd_byte *) src -> exitProcedureOffset);
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dst -> checkUnloadProcedureOffset =
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get_word (abfd, (bfd_byte *) src -> checkUnloadProcedureOffset);
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dst -> moduleType =
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get_word (abfd, (bfd_byte *) src -> moduleType);
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dst -> flags =
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get_word (abfd, (bfd_byte *) src -> flags);
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}
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/* Translate an NLM fixed length file header in internal format into
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an NLM file header in external format. */
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static void
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DEFUN (nlm_swap_fixed_header_out, (abfd, src, dst),
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bfd * abfd AND
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Nlm_Internal_Fixed_Header * src AND
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Nlm_External_Fixed_Header * dst)
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{
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memcpy (dst -> signature, src -> signature, NLM_SIGNATURE_SIZE);
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memcpy (dst -> moduleName, src -> moduleName, NLM_MODULE_NAME_SIZE);
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put_word (abfd, (bfd_vma) src -> version,
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(bfd_byte *) dst -> version);
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put_word (abfd, (bfd_vma) src -> codeImageOffset,
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(bfd_byte *) dst -> codeImageOffset);
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put_word (abfd, (bfd_vma) src -> codeImageSize,
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(bfd_byte *) dst -> codeImageSize);
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put_word (abfd, (bfd_vma) src -> dataImageOffset,
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(bfd_byte *) dst -> dataImageOffset);
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put_word (abfd, (bfd_vma) src -> dataImageSize,
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(bfd_byte *) dst -> dataImageSize);
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put_word (abfd, (bfd_vma) src -> uninitializedDataSize,
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(bfd_byte *) dst -> uninitializedDataSize);
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put_word (abfd, (bfd_vma) src -> customDataOffset,
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(bfd_byte *) dst -> customDataOffset);
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put_word (abfd, (bfd_vma) src -> customDataSize,
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(bfd_byte *) dst -> customDataSize);
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put_word (abfd, (bfd_vma) src -> moduleDependencyOffset,
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(bfd_byte *) dst -> moduleDependencyOffset);
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put_word (abfd, (bfd_vma) src -> numberOfModuleDependencies,
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(bfd_byte *) dst -> numberOfModuleDependencies);
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put_word (abfd, (bfd_vma) src -> relocationFixupOffset,
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(bfd_byte *) dst -> relocationFixupOffset);
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put_word (abfd, (bfd_vma) src -> numberOfRelocationFixups,
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(bfd_byte *) dst -> numberOfRelocationFixups);
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put_word (abfd, (bfd_vma) src -> externalReferencesOffset,
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(bfd_byte *) dst -> externalReferencesOffset);
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put_word (abfd, (bfd_vma) src -> numberOfExternalReferences,
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(bfd_byte *) dst -> numberOfExternalReferences);
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put_word (abfd, (bfd_vma) src -> publicsOffset,
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(bfd_byte *) dst -> publicsOffset);
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put_word (abfd, (bfd_vma) src -> numberOfPublics,
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(bfd_byte *) dst -> numberOfPublics);
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put_word (abfd, (bfd_vma) src -> debugInfoOffset,
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(bfd_byte *) dst -> debugInfoOffset);
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put_word (abfd, (bfd_vma) src -> numberOfDebugRecords,
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(bfd_byte *) dst -> numberOfDebugRecords);
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put_word (abfd, (bfd_vma) src -> codeStartOffset,
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(bfd_byte *) dst -> codeStartOffset);
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put_word (abfd, (bfd_vma) src -> exitProcedureOffset,
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(bfd_byte *) dst -> exitProcedureOffset);
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put_word (abfd, (bfd_vma) src -> checkUnloadProcedureOffset,
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(bfd_byte *) dst -> checkUnloadProcedureOffset);
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put_word (abfd, (bfd_vma) src -> moduleType,
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(bfd_byte *) dst -> moduleType);
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put_word (abfd, (bfd_vma) src -> flags,
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(bfd_byte *) dst -> flags);
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}
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/* Read and swap in the variable length header. All the fields must
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exist in the NLM, and must exist in the order they are read here. */
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static boolean
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DEFUN (nlm_swap_variable_header_in, (abfd),
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bfd * abfd)
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{
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unsigned char temp [NLM_TARGET_LONG_SIZE];
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/* Read the description length and text members. */
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if (bfd_read ((PTR) &nlm_variable_header (abfd) -> descriptionLength,
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sizeof (nlm_variable_header (abfd) -> descriptionLength),
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1, abfd) !=
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sizeof (nlm_variable_header (abfd) -> descriptionLength))
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{
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bfd_error = system_call_error;
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return (false);
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}
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if (bfd_read ((PTR) nlm_variable_header (abfd) -> descriptionText,
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nlm_variable_header (abfd) -> descriptionLength + 1,
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1, abfd) !=
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nlm_variable_header (abfd) -> descriptionLength + 1)
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{
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bfd_error = system_call_error;
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return (false);
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}
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/* Read and convert the stackSize field. */
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if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
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{
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bfd_error = system_call_error;
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return (false);
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}
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nlm_variable_header (abfd) -> stackSize = get_word (abfd, (bfd_byte *) temp);
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/* Read and convert the reserved field. */
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if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
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{
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bfd_error = system_call_error;
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return (false);
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}
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nlm_variable_header (abfd) -> reserved = get_word (abfd, (bfd_byte *) temp);
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/* Read the oldThreadName field. This field is a fixed length string. */
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if (bfd_read ((PTR) nlm_variable_header (abfd) -> oldThreadName,
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sizeof (nlm_variable_header (abfd) -> oldThreadName),
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1, abfd) !=
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sizeof (nlm_variable_header (abfd) -> oldThreadName))
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{
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bfd_error = system_call_error;
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return (false);
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}
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/* Read the screen name length and text members. */
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if (bfd_read ((PTR) &nlm_variable_header (abfd) -> screenNameLength,
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sizeof (nlm_variable_header (abfd) -> screenNameLength),
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1, abfd) !=
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sizeof (nlm_variable_header (abfd) -> screenNameLength))
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{
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bfd_error = system_call_error;
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return (false);
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}
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if (bfd_read ((PTR) nlm_variable_header (abfd) -> screenName,
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nlm_variable_header (abfd) -> screenNameLength + 1,
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1, abfd) !=
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nlm_variable_header (abfd) -> screenNameLength + 1)
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{
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bfd_error = system_call_error;
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return (false);
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}
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/* Read the thread name length and text members. */
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if (bfd_read ((PTR) &nlm_variable_header (abfd) -> threadNameLength,
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sizeof (nlm_variable_header (abfd) -> threadNameLength),
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1, abfd) !=
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sizeof (nlm_variable_header (abfd) -> threadNameLength))
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{
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bfd_error = system_call_error;
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return (false);
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}
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if (bfd_read ((PTR) nlm_variable_header (abfd) -> threadName,
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nlm_variable_header (abfd) -> threadNameLength + 1,
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1, abfd) !=
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nlm_variable_header (abfd) -> threadNameLength + 1)
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{
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bfd_error = system_call_error;
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return (false);
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}
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return (true);
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}
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/* Swap and write out the variable length header. All the fields must
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exist in the NLM, and must exist in this order. */
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static boolean
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DEFUN (nlm_swap_variable_header_out, (abfd),
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bfd * abfd)
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{
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unsigned char temp [NLM_TARGET_LONG_SIZE];
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/* Write the description length and text members. */
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if (bfd_write ((PTR) &nlm_variable_header (abfd) -> descriptionLength,
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sizeof (nlm_variable_header (abfd) -> descriptionLength),
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1, abfd) !=
|
||
sizeof (nlm_variable_header (abfd) -> descriptionLength))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (bfd_write ((PTR) nlm_variable_header (abfd) -> descriptionText,
|
||
nlm_variable_header (abfd) -> descriptionLength + 1,
|
||
1, abfd) !=
|
||
nlm_variable_header (abfd) -> descriptionLength + 1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
/* Convert and write the stackSize field. */
|
||
|
||
put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> stackSize,
|
||
(bfd_byte *) temp);
|
||
if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
/* Convert and write the reserved field. */
|
||
|
||
put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> reserved,
|
||
(bfd_byte *) temp);
|
||
if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
/* Write the oldThreadName field. This field is a fixed length string. */
|
||
|
||
if (bfd_write ((PTR) nlm_variable_header (abfd) -> oldThreadName,
|
||
sizeof (nlm_variable_header (abfd) -> oldThreadName),
|
||
1, abfd) !=
|
||
sizeof (nlm_variable_header (abfd) -> oldThreadName))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
/* Write the screen name length and text members. */
|
||
|
||
if (bfd_write ((PTR) &nlm_variable_header (abfd) -> screenNameLength,
|
||
sizeof (nlm_variable_header (abfd) -> screenNameLength),
|
||
1, abfd) !=
|
||
sizeof (nlm_variable_header (abfd) -> screenNameLength))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (bfd_write ((PTR) nlm_variable_header (abfd) -> screenName,
|
||
nlm_variable_header (abfd) -> screenNameLength + 1,
|
||
1, abfd) !=
|
||
nlm_variable_header (abfd) -> screenNameLength + 1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
/* Write the thread name length and text members. */
|
||
|
||
if (bfd_write ((PTR) &nlm_variable_header (abfd) -> threadNameLength,
|
||
sizeof (nlm_variable_header (abfd) -> threadNameLength),
|
||
1, abfd) !=
|
||
sizeof (nlm_variable_header (abfd) -> threadNameLength))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (bfd_write ((PTR) nlm_variable_header (abfd) -> threadName,
|
||
nlm_variable_header (abfd) -> threadNameLength + 1,
|
||
1, abfd) !=
|
||
nlm_variable_header (abfd) -> threadNameLength + 1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
return (true);
|
||
}
|
||
|
||
/* Read and swap in the contents of all the auxiliary headers. Because of
|
||
the braindead design, we have to do strcmps on strings of indeterminate
|
||
length to figure out what each auxiliary header is. Even worse, we have
|
||
no way of knowing how many auxiliary headers there are or where the end
|
||
of the auxiliary headers are, except by finding something that doesn't
|
||
look like a known auxiliary header. This means that the first new type
|
||
of auxiliary header added will break all existing tools that don't
|
||
recognize it. */
|
||
|
||
static boolean
|
||
DEFUN (nlm_swap_auxiliary_headers_in, (abfd),
|
||
bfd * abfd)
|
||
{
|
||
unsigned char tempstr [16];
|
||
long position;
|
||
|
||
for (;;)
|
||
{
|
||
position = bfd_tell (abfd);
|
||
if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) !=
|
||
sizeof (tempstr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (bfd_seek (abfd, position, SEEK_SET) == -1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (strncmp (tempstr, "VeRsIoN#", 8) == 0)
|
||
{
|
||
Nlm_External_Version_Header thdr;
|
||
if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
memcpy (nlm_version_header (abfd) -> stamp, thdr.stamp,
|
||
sizeof (thdr.stamp));
|
||
nlm_version_header (abfd) -> majorVersion =
|
||
get_word (abfd, (bfd_byte *) thdr.majorVersion);
|
||
nlm_version_header (abfd) -> minorVersion =
|
||
get_word (abfd, (bfd_byte *) thdr.minorVersion);
|
||
nlm_version_header (abfd) -> revision =
|
||
get_word (abfd, (bfd_byte *) thdr.revision);
|
||
nlm_version_header (abfd) -> year =
|
||
get_word (abfd, (bfd_byte *) thdr.year);
|
||
nlm_version_header (abfd) -> month =
|
||
get_word (abfd, (bfd_byte *) thdr.month);
|
||
nlm_version_header (abfd) -> day =
|
||
get_word (abfd, (bfd_byte *) thdr.day);
|
||
}
|
||
else if (strncmp (tempstr, "MeSsAgEs", 8) == 0)
|
||
{
|
||
Nlm_External_Extended_Header thdr;
|
||
if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
memcpy (nlm_extended_header (abfd) -> stamp, thdr.stamp,
|
||
sizeof (thdr.stamp));
|
||
nlm_extended_header (abfd) -> languageID =
|
||
get_word (abfd, (bfd_byte *) thdr.languageID);
|
||
nlm_extended_header (abfd) -> messageFileOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.messageFileOffset);
|
||
nlm_extended_header (abfd) -> messageFileLength =
|
||
get_word (abfd, (bfd_byte *) thdr.messageFileLength);
|
||
nlm_extended_header (abfd) -> messageCount =
|
||
get_word (abfd, (bfd_byte *) thdr.messageCount);
|
||
nlm_extended_header (abfd) -> helpFileOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.helpFileOffset);
|
||
nlm_extended_header (abfd) -> helpFileLength =
|
||
get_word (abfd, (bfd_byte *) thdr.helpFileLength);
|
||
nlm_extended_header (abfd) -> RPCDataOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.RPCDataOffset);
|
||
nlm_extended_header (abfd) -> RPCDataLength =
|
||
get_word (abfd, (bfd_byte *) thdr.RPCDataLength);
|
||
nlm_extended_header (abfd) -> sharedCodeOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset);
|
||
nlm_extended_header (abfd) -> sharedCodeLength =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedCodeLength);
|
||
nlm_extended_header (abfd) -> sharedDataOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedDataOffset);
|
||
nlm_extended_header (abfd) -> sharedDataLength =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedDataLength);
|
||
nlm_extended_header (abfd) -> sharedRelocationFixupOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset);
|
||
nlm_extended_header (abfd) -> sharedRelocationFixupCount =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount);
|
||
nlm_extended_header (abfd) -> sharedExternalReferenceOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset);
|
||
nlm_extended_header (abfd) -> sharedExternalReferenceCount =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount);
|
||
nlm_extended_header (abfd) -> sharedPublicsOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset);
|
||
nlm_extended_header (abfd) -> sharedPublicsCount =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount);
|
||
nlm_extended_header (abfd) -> SharedInitializationOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset);
|
||
nlm_extended_header (abfd) -> SharedExitProcedureOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset);
|
||
nlm_extended_header (abfd) -> productID =
|
||
get_word (abfd, (bfd_byte *) thdr.productID);
|
||
nlm_extended_header (abfd) -> reserved0 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved0);
|
||
nlm_extended_header (abfd) -> reserved1 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved1);
|
||
nlm_extended_header (abfd) -> reserved2 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved2);
|
||
nlm_extended_header (abfd) -> reserved3 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved3);
|
||
nlm_extended_header (abfd) -> reserved4 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved4);
|
||
nlm_extended_header (abfd) -> reserved5 =
|
||
get_word (abfd, (bfd_byte *) thdr.reserved5);
|
||
}
|
||
else if (strncmp (tempstr, "CuStHeAd", 8) == 0)
|
||
{
|
||
Nlm_External_Custom_Header thdr;
|
||
if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
memcpy (nlm_custom_header (abfd) -> stamp, thdr.stamp,
|
||
sizeof (thdr.stamp));
|
||
nlm_custom_header (abfd) -> dataLength =
|
||
get_word (abfd, (bfd_byte *) thdr.dataLength);
|
||
nlm_custom_header (abfd) -> debugRecOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.debugRecOffset);
|
||
nlm_custom_header (abfd) -> debugRecLength =
|
||
get_word (abfd, (bfd_byte *) thdr.debugRecLength);
|
||
}
|
||
else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0)
|
||
{
|
||
Nlm_External_Copyright_Header thdr;
|
||
if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
memcpy (nlm_copyright_header (abfd) -> stamp, thdr.stamp,
|
||
sizeof (thdr.stamp));
|
||
nlm_copyright_header (abfd) -> copyrightMessageLength =
|
||
get_word (abfd, (bfd_byte *) thdr.copyrightMessageLength);
|
||
/* The copyright message is a variable length string. */
|
||
if (bfd_read ((PTR) nlm_copyright_header (abfd) -> copyrightMessage,
|
||
nlm_copyright_header (abfd) -> copyrightMessageLength + 1,
|
||
1, abfd) !=
|
||
nlm_copyright_header (abfd) -> copyrightMessageLength + 1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
return (true);
|
||
}
|
||
|
||
/* Return whether there is a non-zero byte in a memory block. */
|
||
|
||
static boolean
|
||
find_nonzero (buf, size)
|
||
PTR buf;
|
||
size_t size;
|
||
{
|
||
char *p = (char *) buf;
|
||
|
||
while (size-- != 0)
|
||
if (*p++ != 0)
|
||
return true;
|
||
return false;
|
||
}
|
||
|
||
/* Swap out the contents of the auxiliary headers. We create those
|
||
auxiliary headers which have been set non-zero. We do not require
|
||
the caller to set up the stamp fields. */
|
||
|
||
static boolean
|
||
nlm_swap_auxiliary_headers_out (abfd)
|
||
bfd *abfd;
|
||
{
|
||
/* Write out the version header if there is one. */
|
||
if (find_nonzero ((PTR) nlm_version_header (abfd),
|
||
sizeof (Nlm_Internal_Version_Header)))
|
||
{
|
||
Nlm_External_Version_Header thdr;
|
||
|
||
memcpy (thdr.stamp, "VeRsIoN#", 8);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> majorVersion,
|
||
(bfd_byte *) thdr.majorVersion);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> minorVersion,
|
||
(bfd_byte *) thdr.minorVersion);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> revision,
|
||
(bfd_byte *) thdr.revision);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> year,
|
||
(bfd_byte *) thdr.year);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> month,
|
||
(bfd_byte *) thdr.month);
|
||
put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> day,
|
||
(bfd_byte *) thdr.day);
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Write out the extended header if there is one. */
|
||
if (find_nonzero ((PTR) nlm_extended_header (abfd),
|
||
sizeof (Nlm_Internal_Extended_Header)))
|
||
{
|
||
Nlm_External_Extended_Header thdr;
|
||
|
||
memcpy (thdr.stamp, "MeSsAgEs", 8);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> languageID,
|
||
(bfd_byte *) thdr.languageID);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> messageFileOffset,
|
||
(bfd_byte *) thdr.messageFileOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> messageFileLength,
|
||
(bfd_byte *) thdr.messageFileLength);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> messageCount,
|
||
(bfd_byte *) thdr.messageCount);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> helpFileOffset,
|
||
(bfd_byte *) thdr.helpFileOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> helpFileLength,
|
||
(bfd_byte *) thdr.helpFileLength);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> RPCDataOffset,
|
||
(bfd_byte *) thdr.RPCDataOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> RPCDataLength,
|
||
(bfd_byte *) thdr.RPCDataLength);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedCodeOffset,
|
||
(bfd_byte *) thdr.sharedCodeOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedCodeLength,
|
||
(bfd_byte *) thdr.sharedCodeLength);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedDataOffset,
|
||
(bfd_byte *) thdr.sharedDataOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedDataLength,
|
||
(bfd_byte *) thdr.sharedDataLength);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupOffset,
|
||
(bfd_byte *) thdr.sharedRelocationFixupOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupCount,
|
||
(bfd_byte *) thdr.sharedRelocationFixupCount);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceOffset,
|
||
(bfd_byte *) thdr.sharedExternalReferenceOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceCount,
|
||
(bfd_byte *) thdr.sharedExternalReferenceCount);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedPublicsOffset,
|
||
(bfd_byte *) thdr.sharedPublicsOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> sharedPublicsCount,
|
||
(bfd_byte *) thdr.sharedPublicsCount);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> SharedInitializationOffset,
|
||
(bfd_byte *) thdr.sharedInitializationOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> SharedExitProcedureOffset,
|
||
(bfd_byte *) thdr.SharedExitProcedureOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> productID,
|
||
(bfd_byte *) thdr.productID);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved0,
|
||
(bfd_byte *) thdr.reserved0);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved1,
|
||
(bfd_byte *) thdr.reserved1);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved2,
|
||
(bfd_byte *) thdr.reserved2);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved3,
|
||
(bfd_byte *) thdr.reserved3);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved4,
|
||
(bfd_byte *) thdr.reserved4);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd) -> reserved5,
|
||
(bfd_byte *) thdr.reserved5);
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Write out the custom header if there is one. */
|
||
if (find_nonzero ((PTR) nlm_custom_header (abfd),
|
||
sizeof (Nlm_Internal_Custom_Header)))
|
||
{
|
||
Nlm_External_Custom_Header thdr;
|
||
|
||
/* Right now we assume the custom header is always the suggested
|
||
format for alternate debugging records. */
|
||
BFD_ASSERT (nlm_custom_header (abfd) -> dataLength == 8);
|
||
|
||
memcpy (thdr.stamp, "CuStHeAd", 8);
|
||
put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> dataLength,
|
||
(bfd_byte *) thdr.dataLength);
|
||
put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecOffset,
|
||
(bfd_byte *) thdr.debugRecOffset);
|
||
put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecLength,
|
||
(bfd_byte *) thdr.debugRecLength);
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Write out the copyright header if there is one. */
|
||
if (find_nonzero ((PTR) nlm_copyright_header (abfd),
|
||
sizeof (Nlm_Internal_Copyright_Header)))
|
||
{
|
||
Nlm_External_Copyright_Header thdr;
|
||
|
||
memcpy (thdr.stamp, "CoPyRiGhT=", 10);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_copyright_header (abfd) -> copyrightMessageLength,
|
||
(bfd_byte *) thdr.copyrightMessageLength);
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
/* The copyright message is a variable length string. */
|
||
if (bfd_write ((PTR) nlm_copyright_header (abfd) -> copyrightMessage,
|
||
nlm_copyright_header (abfd) -> copyrightMessageLength + 1,
|
||
1, abfd) !=
|
||
nlm_copyright_header (abfd) -> copyrightMessageLength + 1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We read the NLM's public symbols and use it to generate a bfd symbol
|
||
table (hey, it's better than nothing) on a one-for-one basis. Thus
|
||
use the number of public symbols as the number of bfd symbols we will
|
||
have once we actually get around to reading them in.
|
||
|
||
Return the number of bytes required to hold the symtab vector, based on
|
||
the count plus 1, since we will NULL terminate the vector allocated based
|
||
on this size. */
|
||
|
||
unsigned int
|
||
DEFUN (nlm_get_symtab_upper_bound, (abfd), bfd * abfd)
|
||
{
|
||
Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
|
||
unsigned int symcount;
|
||
unsigned int symtab_size = 0;
|
||
|
||
i_fxdhdrp = nlm_fixed_header (abfd);
|
||
symcount = (i_fxdhdrp -> numberOfPublics
|
||
+ i_fxdhdrp -> numberOfExternalReferences);
|
||
symtab_size = (symcount + 1) * (sizeof (asymbol));
|
||
return (symtab_size);
|
||
}
|
||
|
||
/* Note that bfd_get_symcount is guaranteed to be zero if slurping the
|
||
symbol table fails. */
|
||
|
||
unsigned int
|
||
nlm_get_symtab (abfd, alocation)
|
||
bfd *abfd;
|
||
asymbol **alocation;
|
||
{
|
||
nlm_symbol_type *symbase;
|
||
bfd_size_type counter = 0;
|
||
|
||
if (nlm_slurp_symbol_table (abfd) == false)
|
||
return 0;
|
||
symbase = nlm_get_symbols (abfd);
|
||
while (counter < bfd_get_symcount (abfd))
|
||
{
|
||
*alocation++ = &symbase->symbol;
|
||
symbase++;
|
||
counter++;
|
||
}
|
||
*alocation = (asymbol *) NULL;
|
||
return bfd_get_symcount (abfd);
|
||
}
|
||
|
||
/* Make an NLM symbol. There is nothing special to do here. */
|
||
|
||
asymbol *
|
||
nlm_make_empty_symbol (abfd)
|
||
bfd * abfd;
|
||
{
|
||
nlm_symbol_type *new;
|
||
|
||
new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type));
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
/* Get symbol information. */
|
||
|
||
void
|
||
nlm_get_symbol_info (ignore_abfd, symbol, ret)
|
||
bfd * ignore_abfd;
|
||
asymbol * symbol;
|
||
symbol_info * ret;
|
||
{
|
||
bfd_symbol_info (symbol, ret);
|
||
}
|
||
|
||
/* Print symbol information. */
|
||
|
||
void
|
||
nlm_print_symbol (abfd, afile, symbol, how)
|
||
bfd *abfd;
|
||
PTR afile;
|
||
asymbol *symbol;
|
||
bfd_print_symbol_type how;
|
||
{
|
||
FILE *file = (FILE *) afile;
|
||
|
||
switch (how)
|
||
{
|
||
case bfd_print_symbol_name:
|
||
case bfd_print_symbol_more:
|
||
if (symbol->name)
|
||
fprintf (file,"%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_all:
|
||
bfd_print_symbol_vandf ((PTR) file, symbol);
|
||
fprintf (file, " %-5s", symbol->section->name);
|
||
if (symbol->name)
|
||
fprintf (file," %s", symbol->name);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Slurp in nlm symbol table.
|
||
|
||
In the external (in-file) form, NLM export records are variable length,
|
||
with the following form:
|
||
|
||
1 byte length of the symbol name (N)
|
||
N bytes the symbol name
|
||
4 bytes the symbol offset from start of it's section
|
||
|
||
Note that we currently ignore the internal debug records. There is
|
||
a lot of duplication between the export records and the internal debug
|
||
records. We may in the future, want to merge the information from the
|
||
debug records with the information from the export records to produce
|
||
a more complete symbol table, treating additional information from the
|
||
debug records as static symbols. (FIXME)
|
||
|
||
We do read in the import records. These are treated as undefined
|
||
symbols. As we read them in we also read in the associated reloc
|
||
information, which is attached to the symbol.
|
||
|
||
The bfd symbols are copied to SYMPTRS.
|
||
|
||
When we return, the bfd symcount is either zero or contains the correct
|
||
number of symbols.
|
||
*/
|
||
|
||
static boolean
|
||
nlm_slurp_symbol_table (abfd)
|
||
bfd *abfd;
|
||
{
|
||
Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
|
||
bfd_size_type totsymcount; /* Number of NLM symbols */
|
||
bfd_size_type symcount; /* Counter of NLM symbols */
|
||
nlm_symbol_type *sym; /* Pointer to current bfd symbol */
|
||
char symlength; /* Symbol length read into here */
|
||
bfd_size_type rcount; /* Number of relocs */
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */
|
||
boolean (*read_reloc_func) PARAMS ((bfd *, nlm_symbol_type *, asection **,
|
||
arelent *));
|
||
|
||
if (nlm_get_symbols (abfd) != NULL)
|
||
return (true);
|
||
|
||
/* Read each raw NLM symbol, using the information to create a canonical bfd
|
||
symbol table entry.
|
||
|
||
Note that we allocate the initial bfd canonical symbol buffer based on a
|
||
one-to-one mapping of the NLM symbols to canonical symbols. We actually
|
||
use all the NLM symbols, so there will be no space left over at the end.
|
||
When we have all the symbols, we build the caller's pointer vector. */
|
||
|
||
abfd -> symcount = 0;
|
||
i_fxdhdrp = nlm_fixed_header (abfd);
|
||
totsymcount = (i_fxdhdrp -> numberOfPublics
|
||
+ i_fxdhdrp -> numberOfExternalReferences);
|
||
if (totsymcount == 0)
|
||
{
|
||
return (true);
|
||
}
|
||
|
||
if (bfd_seek (abfd, i_fxdhdrp -> publicsOffset, SEEK_SET) == -1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
sym = ((nlm_symbol_type *)
|
||
bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type)));
|
||
nlm_set_symbols (abfd, sym);
|
||
|
||
/* We use the bfd's symcount directly as the control count, so that early
|
||
termination of the loop leaves the symcount correct for the symbols that
|
||
were read. */
|
||
|
||
symcount = i_fxdhdrp -> numberOfPublics;
|
||
while (abfd -> symcount < symcount)
|
||
{
|
||
if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
|
||
!= sizeof (symlength))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
sym -> symbol.the_bfd = abfd;
|
||
sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
|
||
if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
|
||
!= symlength)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
sym -> symbol.flags = BSF_GLOBAL | BSF_EXPORT;
|
||
sym -> symbol.value = get_word (abfd, temp);
|
||
if (sym -> symbol.value & NLM_HIBIT)
|
||
{
|
||
sym -> symbol.value &= ~NLM_HIBIT;
|
||
sym -> symbol.flags |= BSF_FUNCTION;
|
||
sym -> symbol.section =
|
||
bfd_get_section_by_name (abfd, NLM_CODE_NAME);
|
||
}
|
||
else
|
||
{
|
||
sym -> symbol.section =
|
||
bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
|
||
}
|
||
sym -> rcnt = 0;
|
||
abfd -> symcount++;
|
||
sym++;
|
||
}
|
||
|
||
/* Read in the import records. We can only do this if we know how
|
||
to read relocs for this target. */
|
||
|
||
read_reloc_func = nlm_read_reloc_func (abfd);
|
||
if (read_reloc_func != NULL)
|
||
{
|
||
if (bfd_seek (abfd, i_fxdhdrp -> externalReferencesOffset, SEEK_SET)
|
||
== -1)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
|
||
symcount += i_fxdhdrp -> numberOfExternalReferences;
|
||
while (abfd -> symcount < symcount)
|
||
{
|
||
struct nlm_relent *nlm_relocs;
|
||
|
||
if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
|
||
!= sizeof (symlength))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
sym -> symbol.the_bfd = abfd;
|
||
sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
|
||
if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
|
||
!= symlength)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
sym -> symbol.flags = 0;
|
||
sym -> symbol.value = 0;
|
||
sym -> symbol.section = &bfd_und_section;
|
||
if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return (false);
|
||
}
|
||
rcount = get_word (abfd, temp);
|
||
nlm_relocs = ((struct nlm_relent *)
|
||
bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)));
|
||
sym -> relocs = nlm_relocs;
|
||
sym -> rcnt = 0;
|
||
while (sym -> rcnt < rcount)
|
||
{
|
||
asection *section;
|
||
|
||
if ((*read_reloc_func) (abfd, sym, §ion,
|
||
&nlm_relocs -> reloc)
|
||
== false)
|
||
return false;
|
||
nlm_relocs -> section = section;
|
||
nlm_relocs++;
|
||
sym -> rcnt++;
|
||
}
|
||
|
||
abfd -> symcount++;
|
||
sym++;
|
||
}
|
||
}
|
||
|
||
return (true);
|
||
}
|
||
|
||
/* Get the relocs for an NLM file. There are two types of relocs.
|
||
Imports are relocs against symbols defined in other NLM files. We
|
||
treat these as relocs against global symbols. Relocation fixups
|
||
are internal relocs.
|
||
|
||
The actual format used to store the relocs is machine specific. */
|
||
|
||
/* Read in the relocation fixup information. This is stored in
|
||
nlm_relocation_fixups, an array of arelent structures, and
|
||
nlm_relocation_fixup_secs, an array of section pointers. The
|
||
section pointers are needed because the relocs are not sorted by
|
||
section. */
|
||
|
||
static boolean
|
||
nlm_slurp_reloc_fixups (abfd)
|
||
bfd *abfd;
|
||
{
|
||
boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **,
|
||
arelent *));
|
||
bfd_size_type count;
|
||
arelent *rels;
|
||
asection **secs;
|
||
|
||
if (nlm_relocation_fixups (abfd) != NULL)
|
||
return true;
|
||
read_func = nlm_read_reloc_func (abfd);
|
||
if (read_func == NULL)
|
||
return true;
|
||
|
||
if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
|
||
SEEK_SET) != 0)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
|
||
rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent));
|
||
secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *));
|
||
if (rels == NULL || secs == NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
nlm_relocation_fixups (abfd) = rels;
|
||
nlm_relocation_fixup_secs (abfd) = secs;
|
||
|
||
/* We have to read piece by piece, because we don't know how large
|
||
the machine specific reloc information is. */
|
||
while (count-- != 0)
|
||
{
|
||
if ((*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels) == false)
|
||
{
|
||
nlm_relocation_fixups (abfd) = NULL;
|
||
nlm_relocation_fixup_secs (abfd) = NULL;
|
||
return false;
|
||
}
|
||
++secs;
|
||
++rels;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Get the number of relocs. This really just returns an upper bound,
|
||
since it does not attempt to distinguish them based on the section.
|
||
That will be handled when they are actually read. */
|
||
|
||
unsigned int
|
||
nlm_get_reloc_upper_bound (abfd, sec)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
{
|
||
nlm_symbol_type *syms;
|
||
bfd_size_type count;
|
||
unsigned int ret;
|
||
|
||
/* If we don't know how to read relocs, just return 0. */
|
||
if (nlm_read_reloc_func (abfd) == NULL)
|
||
return 0;
|
||
/* Make sure we have either the code or the data section. */
|
||
if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
|
||
return 0;
|
||
|
||
syms = nlm_get_symbols (abfd);
|
||
if (syms == NULL)
|
||
{
|
||
if (nlm_slurp_symbol_table (abfd) == NULL)
|
||
return 0;
|
||
syms = nlm_get_symbols (abfd);
|
||
}
|
||
|
||
ret = nlm_fixed_header (abfd)->numberOfRelocationFixups;
|
||
|
||
count = bfd_get_symcount (abfd);
|
||
while (count-- != 0)
|
||
{
|
||
ret += syms->rcnt;
|
||
++syms;
|
||
}
|
||
|
||
return (ret + 1) * sizeof (arelent *);
|
||
}
|
||
|
||
/* Get the relocs themselves. */
|
||
|
||
unsigned int
|
||
nlm_canonicalize_reloc (abfd, sec, relptr, symbols)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
arelent **relptr;
|
||
asymbol **symbols;
|
||
{
|
||
arelent *rels;
|
||
asection **secs;
|
||
bfd_size_type count, i;
|
||
unsigned int ret;
|
||
|
||
/* Get the relocation fixups. */
|
||
rels = nlm_relocation_fixups (abfd);
|
||
if (rels == NULL)
|
||
{
|
||
if (nlm_slurp_reloc_fixups (abfd) == NULL)
|
||
return 0;
|
||
rels = nlm_relocation_fixups (abfd);
|
||
if (rels == NULL)
|
||
return 0;
|
||
}
|
||
secs = nlm_relocation_fixup_secs (abfd);
|
||
|
||
ret = 0;
|
||
count = nlm_fixed_header (abfd)->numberOfRelocationFixups;
|
||
for (i = 0; i < count; i++, rels++, secs++)
|
||
{
|
||
if (*secs == sec)
|
||
{
|
||
*relptr++ = rels;
|
||
++ret;
|
||
}
|
||
}
|
||
|
||
/* Get the import symbols. */
|
||
count = bfd_get_symcount (abfd);
|
||
for (i = 0; i < count; i++, symbols++)
|
||
{
|
||
asymbol *sym;
|
||
|
||
sym = *symbols;
|
||
if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour)
|
||
{
|
||
nlm_symbol_type *nlm_sym;
|
||
bfd_size_type j;
|
||
|
||
nlm_sym = (nlm_symbol_type *) sym;
|
||
for (j = 0; j < nlm_sym->rcnt; j++)
|
||
{
|
||
if (nlm_sym->relocs[j].section == sec)
|
||
{
|
||
*relptr = &nlm_sym->relocs[j].reloc;
|
||
(*relptr)->sym_ptr_ptr = symbols;
|
||
++relptr;
|
||
++ret;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
*relptr = NULL;
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Compute the section file positions for an NLM file. All variable
|
||
length data in the file headers must be set before this function is
|
||
called. If the variable length data is changed later, the
|
||
resulting object file will be incorrect. Unfortunately, there is
|
||
no way to check this.
|
||
|
||
This routine also sets the Size and Offset fields in the fixed
|
||
header.
|
||
|
||
It also looks over the symbols and moves any common symbols into
|
||
the .bss section; NLM has no way to represent a common symbol.
|
||
This approach means that either the symbols must already have been
|
||
set at this point, or there must be no common symbols. We need to
|
||
move the symbols at this point so that mangle_relocs can see the
|
||
final values. */
|
||
|
||
static boolean
|
||
nlm_compute_section_file_positions (abfd)
|
||
bfd *abfd;
|
||
{
|
||
file_ptr sofar;
|
||
asection *sec;
|
||
bfd_vma text, data, bss;
|
||
bfd_vma text_low, data_low;
|
||
int text_align, data_align, other_align;
|
||
file_ptr text_ptr, data_ptr, other_ptr;
|
||
asymbol **sym_ptr_ptr;
|
||
|
||
if (abfd->output_has_begun == true)
|
||
return true;
|
||
|
||
abfd->output_has_begun = true;
|
||
|
||
/* The fixed header. */
|
||
sofar = sizeof (Nlm_External_Fixed_Header);
|
||
|
||
/* The variable header. */
|
||
sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength)
|
||
+ nlm_variable_header (abfd) -> descriptionLength + 1
|
||
+ NLM_TARGET_LONG_SIZE /* stackSize */
|
||
+ NLM_TARGET_LONG_SIZE /* reserved */
|
||
+ sizeof (nlm_variable_header (abfd) -> oldThreadName)
|
||
+ sizeof (nlm_variable_header (abfd) -> screenNameLength)
|
||
+ nlm_variable_header (abfd) -> screenNameLength + 1
|
||
+ sizeof (nlm_variable_header (abfd) -> threadNameLength)
|
||
+ nlm_variable_header (abfd) -> threadNameLength + 1);
|
||
|
||
/* The auxiliary headers. */
|
||
if (find_nonzero ((PTR) nlm_version_header (abfd),
|
||
sizeof (Nlm_Internal_Version_Header)))
|
||
sofar += sizeof (Nlm_External_Version_Header);
|
||
if (find_nonzero ((PTR) nlm_extended_header (abfd),
|
||
sizeof (Nlm_Internal_Extended_Header)))
|
||
sofar += sizeof (Nlm_External_Extended_Header);
|
||
if (find_nonzero ((PTR) nlm_custom_header (abfd),
|
||
sizeof (Nlm_Internal_Custom_Header)))
|
||
sofar += sizeof (Nlm_External_Custom_Header);
|
||
if (find_nonzero ((PTR) nlm_copyright_header (abfd),
|
||
sizeof (Nlm_Internal_Copyright_Header)))
|
||
sofar += (sizeof (Nlm_External_Copyright_Header)
|
||
+ nlm_copyright_header (abfd) -> copyrightMessageLength + 1);
|
||
|
||
/* Compute the section file positions in two passes. First get the
|
||
sizes of the text and data sections, and then set the file
|
||
positions. This code aligns the sections in the file using the
|
||
same alignment restrictions that apply to the sections in memory;
|
||
this may not be necessary. */
|
||
text = 0;
|
||
text_low = (bfd_vma) -1;
|
||
text_align = 0;
|
||
data = 0;
|
||
data_low = (bfd_vma) -1;
|
||
data_align = 0;
|
||
bss = 0;
|
||
other_align = 0;
|
||
for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
|
||
{
|
||
flagword f;
|
||
|
||
sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power);
|
||
|
||
f = bfd_get_section_flags (abfd, sec);
|
||
if (f & SEC_CODE)
|
||
{
|
||
text += sec->_raw_size;
|
||
if (bfd_get_section_vma (abfd, sec) < text_low)
|
||
text_low = bfd_get_section_vma (abfd, sec);
|
||
if (sec->alignment_power > text_align)
|
||
text_align = sec->alignment_power;
|
||
}
|
||
else if (f & SEC_DATA)
|
||
{
|
||
data += sec->_raw_size;
|
||
if (bfd_get_section_vma (abfd, sec) < data_low)
|
||
data_low = bfd_get_section_vma (abfd, sec);
|
||
if (sec->alignment_power > data_align)
|
||
data_align = sec->alignment_power;
|
||
}
|
||
else if (f & SEC_HAS_CONTENTS)
|
||
{
|
||
if (sec->alignment_power > other_align)
|
||
other_align = sec->alignment_power;
|
||
}
|
||
else if (f & SEC_ALLOC)
|
||
bss += sec->_raw_size;
|
||
}
|
||
|
||
nlm_set_text_low (abfd, text_low);
|
||
nlm_set_data_low (abfd, data_low);
|
||
|
||
text_ptr = BFD_ALIGN (sofar, 1 << text_align);
|
||
data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align);
|
||
other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align);
|
||
|
||
/* Fill in some fields in the header for which we now have the
|
||
information. */
|
||
nlm_fixed_header (abfd)->codeImageOffset = text_ptr;
|
||
nlm_fixed_header (abfd)->codeImageSize = text;
|
||
nlm_fixed_header (abfd)->dataImageOffset = data_ptr;
|
||
nlm_fixed_header (abfd)->dataImageSize = data;
|
||
nlm_fixed_header (abfd)->uninitializedDataSize = bss;
|
||
|
||
for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
|
||
{
|
||
flagword f;
|
||
|
||
f = bfd_get_section_flags (abfd, sec);
|
||
|
||
if (f & SEC_CODE)
|
||
{
|
||
sec->filepos = text_ptr;
|
||
text_ptr += sec->_raw_size;
|
||
}
|
||
else if (f & SEC_DATA)
|
||
{
|
||
sec->filepos = data_ptr;
|
||
data_ptr += sec->_raw_size;
|
||
}
|
||
else if (f & SEC_HAS_CONTENTS)
|
||
{
|
||
sec->filepos = other_ptr;
|
||
other_ptr += sec->_raw_size;
|
||
}
|
||
}
|
||
|
||
nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr;
|
||
|
||
/* Move all common symbols into the .bss section. */
|
||
|
||
sym_ptr_ptr = bfd_get_outsymbols (abfd);
|
||
if (sym_ptr_ptr != NULL)
|
||
{
|
||
asymbol **sym_end;
|
||
asection *bss_sec;
|
||
bfd_vma add;
|
||
|
||
/* Make sure we have a section to hold uninitialized data. */
|
||
bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
|
||
if (bss_sec == NULL)
|
||
{
|
||
if (! add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME,
|
||
(file_ptr) 0, (bfd_size_type) 0,
|
||
SEC_ALLOC))
|
||
return false;
|
||
bss_sec = bfd_get_section_by_name (abfd,
|
||
NLM_UNINITIALIZED_DATA_NAME);
|
||
bss_sec->vma = data_low + data;
|
||
}
|
||
|
||
sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
|
||
add = 0;
|
||
for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
|
||
{
|
||
asymbol *sym;
|
||
bfd_vma size;
|
||
|
||
sym = *sym_ptr_ptr;
|
||
|
||
if (! bfd_is_com_section (bfd_get_section (sym)))
|
||
continue;
|
||
|
||
/* Put the common symbol in the .bss section, and increase
|
||
the size of the .bss section by the size of the common
|
||
symbol (which is the old value of the symbol). */
|
||
sym->section = bss_sec;
|
||
size = sym->value;
|
||
sym->value = bss_sec->_raw_size + add;
|
||
add += size;
|
||
add = BFD_ALIGN (add, 1 << bss_sec->alignment_power);
|
||
}
|
||
nlm_fixed_header (abfd)->uninitializedDataSize += add;
|
||
bss_sec->_raw_size += add;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set the contents of a section. To do this we need to know where
|
||
the section is going to be located in the output file. That means
|
||
that the sizes of all the sections must be set, and all the
|
||
variable size header information must be known. */
|
||
|
||
boolean
|
||
nlm_set_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
asection *section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
if (abfd->output_has_begun == false
|
||
&& nlm_compute_section_file_positions (abfd) == false)
|
||
return false;
|
||
|
||
if (count == 0)
|
||
return true;
|
||
|
||
/* i386 NetWare has a very restricted set of relocs. In order for
|
||
objcopy to work, the NLM i386 backend needs a chance to rework
|
||
the section contents so that its set of relocs will work. If all
|
||
the relocs are already acceptable, this will not do anything. */
|
||
if (section->reloc_count != 0)
|
||
{
|
||
boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR data,
|
||
bfd_vma offset,
|
||
bfd_size_type count));
|
||
|
||
mangle_relocs_func = nlm_mangle_relocs_func (abfd);
|
||
if (mangle_relocs_func != NULL)
|
||
{
|
||
if (! (*mangle_relocs_func) (abfd, section, location,
|
||
(bfd_vma) offset, count))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0
|
||
|| bfd_write (location, 1, count, abfd) != count)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We need to sort a list of relocs associated with sections when we
|
||
write out the external relocs. */
|
||
|
||
struct reloc_and_sec
|
||
{
|
||
arelent *rel;
|
||
asection *sec;
|
||
};
|
||
|
||
static int
|
||
nlm_external_reloc_compare (p1, p2)
|
||
const void *p1;
|
||
const void *p2;
|
||
{
|
||
const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1;
|
||
const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2;
|
||
|
||
return strcmp ((*r1->rel->sym_ptr_ptr)->name,
|
||
(*r2->rel->sym_ptr_ptr)->name);
|
||
}
|
||
|
||
/* Write out an NLM file. We write out the information in this order:
|
||
fixed header
|
||
variable header
|
||
auxiliary headers
|
||
code sections
|
||
data sections
|
||
other sections (custom data, messages, help, shared NLM, RPC,
|
||
module dependencies)
|
||
relocation fixups
|
||
external references (imports)
|
||
public symbols (exports)
|
||
debugging records
|
||
This is similar to the order used by the NetWare tools; the
|
||
difference is that NetWare puts the sections other than code, data
|
||
and custom data at the end of the NLM. It is convenient for us to
|
||
know where the sections are going to be before worrying about the
|
||
size of the other information.
|
||
|
||
By the time this function is called, all the section data should
|
||
have been output using set_section_contents. Note that custom
|
||
data, the message file, the help file, the shared NLM file, the RPC
|
||
data, and the module dependencies are all considered to be
|
||
sections; the caller is responsible for filling in the offset and
|
||
length fields in the NLM headers. The relocation fixups and
|
||
imports are both obtained from the list of relocs attached to each
|
||
section. The exports and debugging records are obtained from the
|
||
list of outsymbols. */
|
||
|
||
boolean
|
||
nlm_write_object_contents (abfd)
|
||
bfd *abfd;
|
||
{
|
||
Nlm_External_Fixed_Header fixed_header;
|
||
asection *sec;
|
||
boolean (*write_reloc_func) PARAMS ((bfd *, asection *, arelent *));
|
||
bfd_size_type external_reloc_count, internal_reloc_count, i, c;
|
||
struct reloc_and_sec *external_relocs;
|
||
asymbol **sym_ptr_ptr;
|
||
|
||
if (abfd->output_has_begun == false
|
||
&& nlm_compute_section_file_positions (abfd) == false)
|
||
return false;
|
||
|
||
/* Write out the variable length headers. */
|
||
if (bfd_seek (abfd, sizeof (Nlm_External_Fixed_Header), SEEK_SET) != 0)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
if (nlm_swap_variable_header_out (abfd) == false
|
||
|| nlm_swap_auxiliary_headers_out (abfd) == false)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
/* A weak check on whether the section file positions were
|
||
reasonable. */
|
||
if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset)
|
||
{
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
/* Advance to the relocs. */
|
||
if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
|
||
SEEK_SET) != 0)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
/* The format of the relocation entries is dependent upon the
|
||
particular target. We use an external routine to write the reloc
|
||
out. */
|
||
write_reloc_func = nlm_write_reloc_func (abfd);
|
||
|
||
/* Write out the internal relocation fixups. While we're looping
|
||
over the relocs, we also count the external relocs, which is
|
||
needed when they are written out below. */
|
||
internal_reloc_count = 0;
|
||
external_reloc_count = 0;
|
||
for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
|
||
{
|
||
arelent **rel_ptr_ptr, **rel_end;
|
||
|
||
if (sec->reloc_count == 0)
|
||
continue;
|
||
|
||
/* We can only represent relocs within a code or data
|
||
section. */
|
||
if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
|
||
{
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
/* We need to know how to write out relocs. */
|
||
if (write_reloc_func == NULL)
|
||
{
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
rel_ptr_ptr = sec->orelocation;
|
||
rel_end = rel_ptr_ptr + sec->reloc_count;
|
||
for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
|
||
{
|
||
arelent *rel;
|
||
asymbol *sym;
|
||
|
||
rel = *rel_ptr_ptr;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
if (bfd_get_section (sym) != &bfd_und_section)
|
||
{
|
||
++internal_reloc_count;
|
||
if ((*write_reloc_func) (abfd, sec, rel) == false)
|
||
return false;
|
||
}
|
||
else
|
||
++external_reloc_count;
|
||
}
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count;
|
||
|
||
/* Write out the imports (relocs against external symbols). These
|
||
are output as a symbol name followed by all the relocs for that
|
||
symbol, so we must first gather together all the relocs against
|
||
external symbols and sort them. */
|
||
external_relocs =
|
||
(struct reloc_and_sec *) bfd_alloc (abfd,
|
||
(external_reloc_count
|
||
* sizeof (struct reloc_and_sec)));
|
||
if (external_relocs == (struct reloc_and_sec *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
i = 0;
|
||
for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
|
||
{
|
||
arelent **rel_ptr_ptr, **rel_end;
|
||
|
||
if (sec->reloc_count == 0)
|
||
continue;
|
||
|
||
rel_ptr_ptr = sec->orelocation;
|
||
rel_end = rel_ptr_ptr + sec->reloc_count;
|
||
for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++)
|
||
{
|
||
arelent *rel;
|
||
asymbol *sym;
|
||
|
||
rel = *rel_ptr_ptr;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
if (bfd_get_section (sym) != &bfd_und_section)
|
||
continue;
|
||
|
||
external_relocs[i].rel = rel;
|
||
external_relocs[i].sec = sec;
|
||
++i;
|
||
}
|
||
}
|
||
|
||
BFD_ASSERT (i == external_reloc_count);
|
||
|
||
/* Sort the external relocs by name. */
|
||
qsort (external_relocs, external_reloc_count,
|
||
sizeof (struct reloc_and_sec), nlm_external_reloc_compare);
|
||
|
||
/* Write out the external relocs. */
|
||
nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd);
|
||
c = 0;
|
||
i = 0;
|
||
while (i < external_reloc_count)
|
||
{
|
||
arelent *rel;
|
||
asymbol *sym;
|
||
bfd_byte len;
|
||
bfd_size_type j, cnt;
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE];
|
||
|
||
++c;
|
||
|
||
rel = external_relocs[i].rel;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
len = strlen (sym->name);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (sym->name, len, 1, abfd) != len)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
cnt = 0;
|
||
for (j = i;
|
||
(j < external_reloc_count
|
||
&& *external_relocs[j].rel->sym_ptr_ptr == sym);
|
||
j++)
|
||
++cnt;
|
||
|
||
put_word (abfd, (bfd_vma) cnt, temp);
|
||
if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
while (cnt-- != 0)
|
||
{
|
||
if ((*write_reloc_func) (abfd, external_relocs[i].sec,
|
||
external_relocs[i].rel) == false)
|
||
return false;
|
||
++i;
|
||
}
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfExternalReferences = c;
|
||
|
||
/* Write out the public symbols (exports). */
|
||
sym_ptr_ptr = bfd_get_outsymbols (abfd);
|
||
if (sym_ptr_ptr != (asymbol **) NULL)
|
||
{
|
||
asymbol **sym_end;
|
||
|
||
nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd);
|
||
c = 0;
|
||
sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
|
||
for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
|
||
{
|
||
asymbol *sym;
|
||
bfd_byte len;
|
||
bfd_vma offset;
|
||
asection *sec;
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE];
|
||
|
||
sym = *sym_ptr_ptr;
|
||
|
||
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0
|
||
|| bfd_get_section (sym) == &bfd_und_section)
|
||
continue;
|
||
|
||
++c;
|
||
|
||
len = strlen (sym->name);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (sym->name, len, 1, abfd) != len)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
offset = bfd_asymbol_value (sym);
|
||
sec = sym->section;
|
||
if (sec->flags & SEC_CODE)
|
||
{
|
||
offset -= nlm_get_text_low (abfd);
|
||
offset |= NLM_HIBIT;
|
||
}
|
||
else if (sec->flags & (SEC_DATA | SEC_ALLOC))
|
||
{
|
||
/* SEC_ALLOC is for the .bss section. */
|
||
offset -= nlm_get_data_low (abfd);
|
||
}
|
||
else
|
||
{
|
||
/* We can't handle an exported symbol that is not in the
|
||
code or data segment. */
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
put_word (abfd, offset, temp);
|
||
if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfPublics = c;
|
||
|
||
nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd);
|
||
c = 0;
|
||
sym_ptr_ptr = bfd_get_outsymbols (abfd);
|
||
sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
|
||
for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
|
||
{
|
||
asymbol *sym;
|
||
bfd_byte type, len;
|
||
bfd_vma offset;
|
||
asection *sec;
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE];
|
||
|
||
sym = *sym_ptr_ptr;
|
||
|
||
/* The NLM notion of a debugging symbol is actually what BFD
|
||
calls a local or global symbol. What BFD calls a
|
||
debugging symbol NLM does not understand at all. */
|
||
if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0
|
||
|| (sym->flags & BSF_DEBUGGING) != 0
|
||
|| bfd_get_section (sym) == &bfd_und_section)
|
||
continue;
|
||
|
||
++c;
|
||
|
||
offset = bfd_asymbol_value (sym);
|
||
sec = sym->section;
|
||
if (sec->flags & SEC_CODE)
|
||
{
|
||
offset -= nlm_get_text_low (abfd);
|
||
type = 1;
|
||
}
|
||
else if (sec->flags & (SEC_DATA | SEC_ALLOC))
|
||
{
|
||
offset -= nlm_get_data_low (abfd);
|
||
type = 0;
|
||
}
|
||
else
|
||
type = 2;
|
||
|
||
/* The type is 0 for data, 1 for code, 2 for absolute. */
|
||
if (bfd_write (&type, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
put_word (abfd, offset, temp);
|
||
if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
len = strlen (sym->name);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (sym->name, len, 1, abfd) != len)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
/* Exported symbols may get an additional debugging record
|
||
without the prefix. */
|
||
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
|
||
{
|
||
char *s;
|
||
|
||
s = strchr (sym->name, '@');
|
||
if (s != NULL)
|
||
{
|
||
++c;
|
||
|
||
if ((bfd_write (&type, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| (bfd_write (temp, sizeof (temp), 1, abfd)
|
||
!= sizeof (temp)))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
++s;
|
||
|
||
len = strlen (s);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (s, len, 1, abfd) != len)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfDebugRecords = c;
|
||
}
|
||
|
||
/* At this point everything has been written out except the fixed
|
||
header. */
|
||
memcpy (nlm_fixed_header (abfd)->signature, NLM_SIGNATURE,
|
||
NLM_SIGNATURE_SIZE);
|
||
nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION;
|
||
nlm_fixed_header (abfd)->codeStartOffset =
|
||
bfd_get_start_address (abfd) - nlm_get_text_low (abfd);
|
||
|
||
/* We have no convenient way for the caller to pass in the exit
|
||
procedure or the check unload procedure, so the caller must set
|
||
the values in the header to the values of the symbols. */
|
||
if (nlm_fixed_header (abfd)->exitProcedureOffset != 0)
|
||
nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd);
|
||
if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0)
|
||
nlm_fixed_header (abfd)->checkUnloadProcedureOffset -=
|
||
nlm_get_text_low (abfd);
|
||
|
||
nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), &fixed_header);
|
||
if (bfd_seek (abfd, 0, SEEK_SET) != 0
|
||
|| (bfd_write (&fixed_header, sizeof fixed_header, 1, abfd)
|
||
!= sizeof fixed_header))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|