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1518639ec4
* m68klinux.c: Fix formatting. * m68knetbsd.c: Likewise. * mipsbsd.c: Likewise. * netbsd-core.c: Likewise. * netbsd.h: Likewise. * newsos3.c: Likewise. * nlm32-alpha.c: Likewise. * nlm32-i386.c: Likewise. * nlm32-ppc.c: Likewise. * nlm32-sparc.c: Likewise. * nlmcode.h: Likewise. * nlmswap.h: Likewise. * nlm-target.h: Likewise. * ns32knetbsd.c: Likewise.
2056 lines
64 KiB
C
2056 lines
64 KiB
C
/* NLM (NetWare Loadable Module) executable support for BFD.
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Copyright (C) 1993, 94, 95, 98, 1999 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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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_External_Cygnus_Ext_Header NlmNAME(External_Cygnus_Ext_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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#define nlm_swap_fixed_header_in(abfd,src,dst) \
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(nlm_swap_fixed_header_in_func(abfd)) (abfd,src,dst)
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#define nlm_swap_fixed_header_out(abfd,src,dst) \
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(nlm_swap_fixed_header_out_func(abfd)) (abfd,src,dst)
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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 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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const bfd_target *
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nlm_object_p (abfd)
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bfd *abfd;
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{
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struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd);
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boolean (*backend_object_p) PARAMS ((bfd *));
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PTR x_fxdhdr = NULL;
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Nlm_Internal_Fixed_Header *i_fxdhdrp;
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struct nlm_obj_tdata *new_tdata = NULL;
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const char *signature;
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enum bfd_architecture arch;
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/* Some NLM formats have a prefix before the standard NLM fixed
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header. */
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backend_object_p = nlm_backend_object_p_func (abfd);
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if (backend_object_p)
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{
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if (!(*backend_object_p) (abfd))
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goto got_wrong_format_error;
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}
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/* Read in the fixed length portion of the NLM header in external format. */
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x_fxdhdr = (PTR) bfd_malloc ((size_t) nlm_fixed_header_size (abfd));
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if (x_fxdhdr == NULL)
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goto got_no_match;
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if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) !=
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nlm_fixed_header_size (abfd))
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{
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if (bfd_get_error () != bfd_error_system_call)
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goto got_wrong_format_error;
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else
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goto got_no_match;
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}
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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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new_tdata = ((struct nlm_obj_tdata *)
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bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata)));
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if (new_tdata == NULL)
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goto got_no_match;
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nlm_tdata (abfd) = new_tdata;
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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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free (x_fxdhdr);
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x_fxdhdr = NULL;
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/* Check to see if we have an NLM file for this backend by matching
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the NLM signature. */
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signature = nlm_signature (abfd);
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if (signature != NULL
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&& *signature != '\0'
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&& strncmp ((char *) i_fxdhdrp->signature, signature,
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NLM_SIGNATURE_SIZE) != 0)
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goto got_wrong_format_error;
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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 (i_fxdhdrp->version > 0xFFFF)
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goto got_wrong_format_error;
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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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/* Swap in the rest of the required header. */
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if (!nlm_swap_variable_header_in (abfd))
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{
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if (bfd_get_error () != bfd_error_system_call)
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goto got_wrong_format_error;
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else
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goto got_no_match;
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}
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/* Add the sections supplied by all NLM's, and then read in the
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auxiliary headers. Reading the auxiliary headers may create
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additional sections described in the cygnus_ext header.
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From this point on we assume that we have an NLM, and do not
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treat errors as indicating the wrong format. */
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if (!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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goto got_no_match;
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if (!nlm_swap_auxiliary_headers_in (abfd))
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goto got_no_match;
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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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|| nlm_fixed_header (abfd)->numberOfExternalReferences != 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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abfd->flags |= EXEC_P;
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bfd_get_start_address (abfd) = nlm_fixed_header (abfd)->codeStartOffset;
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return (abfd->xvec);
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got_wrong_format_error:
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bfd_set_error (bfd_error_wrong_format);
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got_no_match:
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nlm_tdata (abfd) = preserved_tdata;
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if (new_tdata != NULL)
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bfd_release (abfd, new_tdata);
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if (x_fxdhdr != NULL)
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free (x_fxdhdr);
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return (NULL);
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}
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/* Add a section to the bfd. */
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static boolean
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add_bfd_section (abfd, name, offset, size, flags)
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bfd *abfd;
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char *name;
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file_ptr offset;
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bfd_size_type size;
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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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/* 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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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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return (false);
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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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(bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1)
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return (false);
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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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return (false);
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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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return (false);
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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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return (false);
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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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return (false);
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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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(bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1)
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return (false);
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/* Read the thread name length and text members. */
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|
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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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return (false);
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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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(bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1)
|
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return (false);
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return (true);
|
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}
|
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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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|
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static boolean
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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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|
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/* Write the description length and text members. */
|
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|
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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) !=
|
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sizeof (nlm_variable_header (abfd)->descriptionLength))
|
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return (false);
|
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if (bfd_write ((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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(bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1)
|
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return (false);
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|
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/* Convert and write the stackSize field. */
|
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|
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put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize,
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(bfd_byte *) temp);
|
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if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
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return (false);
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|
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/* Convert and write the reserved field. */
|
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|
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put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved,
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(bfd_byte *) temp);
|
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if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
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return (false);
|
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|
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/* Write the oldThreadName field. This field is a fixed length string. */
|
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|
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if (bfd_write ((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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return (false);
|
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|
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/* Write the screen name length and text members. */
|
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|
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if (bfd_write ((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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return (false);
|
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if (bfd_write ((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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(bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1)
|
||
return (false);
|
||
|
||
/* Write the thread name length and text members. */
|
||
|
||
if (bfd_write ((PTR) & nlm_variable_header (abfd)->threadNameLength,
|
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sizeof (nlm_variable_header (abfd)->threadNameLength),
|
||
1, abfd) !=
|
||
sizeof (nlm_variable_header (abfd)->threadNameLength))
|
||
return (false);
|
||
if (bfd_write ((PTR) nlm_variable_header (abfd)->threadName,
|
||
nlm_variable_header (abfd)->threadNameLength + 1,
|
||
1, abfd) !=
|
||
(bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1)
|
||
return (false);
|
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return (true);
|
||
}
|
||
|
||
/* Read and swap in the contents of all the auxiliary headers. Because of
|
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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
|
||
nlm_swap_auxiliary_headers_in (abfd)
|
||
bfd *abfd;
|
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{
|
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char tempstr[16];
|
||
long position;
|
||
|
||
for (;;)
|
||
{
|
||
position = bfd_tell (abfd);
|
||
if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) !=
|
||
sizeof (tempstr))
|
||
return (false);
|
||
if (bfd_seek (abfd, position, SEEK_SET) == -1)
|
||
return (false);
|
||
if (strncmp (tempstr, "VeRsIoN#", 8) == 0)
|
||
{
|
||
Nlm_External_Version_Header thdr;
|
||
if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
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))
|
||
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)->sharedDebugRecordOffset =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset);
|
||
nlm_extended_header (abfd)->sharedDebugRecordCount =
|
||
get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount);
|
||
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, "CoPyRiGhT=", 10) == 0)
|
||
{
|
||
if (bfd_read ((PTR) nlm_copyright_header (abfd)->stamp,
|
||
sizeof (nlm_copyright_header (abfd)->stamp),
|
||
1, abfd)
|
||
!= sizeof (nlm_copyright_header (abfd)->stamp))
|
||
return (false);
|
||
if (bfd_read ((PTR) & (nlm_copyright_header (abfd)
|
||
->copyrightMessageLength),
|
||
1, 1, abfd) != 1)
|
||
return (false);
|
||
/* 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) !=
|
||
((bfd_size_type)
|
||
nlm_copyright_header (abfd)->copyrightMessageLength + 1))
|
||
return (false);
|
||
}
|
||
else if (strncmp (tempstr, "CuStHeAd", 8) == 0)
|
||
{
|
||
Nlm_External_Custom_Header thdr;
|
||
bfd_size_type hdrLength;
|
||
file_ptr dataOffset;
|
||
bfd_size_type dataLength;
|
||
char dataStamp[8];
|
||
PTR hdr;
|
||
|
||
/* Read the stamp ("CuStHeAd"). */
|
||
if (bfd_read ((PTR) thdr.stamp, 1, sizeof (thdr.stamp), abfd)
|
||
!= sizeof (thdr.stamp))
|
||
return false;
|
||
/* Read the length of this custom header. */
|
||
if (bfd_read ((PTR) thdr.length, 1, sizeof (thdr.length), abfd)
|
||
!= sizeof (thdr.length))
|
||
return false;
|
||
hdrLength = get_word (abfd, (bfd_byte *) thdr.length);
|
||
/* Read further fields if we have them. */
|
||
if (hdrLength < NLM_TARGET_LONG_SIZE)
|
||
dataOffset = 0;
|
||
else
|
||
{
|
||
if (bfd_read ((PTR) thdr.dataOffset, 1,
|
||
sizeof (thdr.dataOffset), abfd)
|
||
!= sizeof (thdr.dataOffset))
|
||
return false;
|
||
dataOffset = get_word (abfd, (bfd_byte *) thdr.dataOffset);
|
||
}
|
||
if (hdrLength < 2 * NLM_TARGET_LONG_SIZE)
|
||
dataLength = 0;
|
||
else
|
||
{
|
||
if (bfd_read ((PTR) thdr.dataLength, 1,
|
||
sizeof (thdr.dataLength), abfd)
|
||
!= sizeof (thdr.dataLength))
|
||
return false;
|
||
dataLength = get_word (abfd, (bfd_byte *) thdr.dataLength);
|
||
}
|
||
if (hdrLength < 2 * NLM_TARGET_LONG_SIZE + 8)
|
||
memset (dataStamp, 0, sizeof (dataStamp));
|
||
else
|
||
{
|
||
if (bfd_read ((PTR) dataStamp, 1, sizeof (dataStamp), abfd)
|
||
!= sizeof (dataStamp))
|
||
return false;
|
||
}
|
||
|
||
/* Read the rest of the header, if any. */
|
||
if (hdrLength <= 2 * NLM_TARGET_LONG_SIZE + 8)
|
||
{
|
||
hdr = NULL;
|
||
hdrLength = 0;
|
||
}
|
||
else
|
||
{
|
||
hdrLength -= 2 * NLM_TARGET_LONG_SIZE + 8;
|
||
hdr = bfd_alloc (abfd, hdrLength);
|
||
if (hdr == NULL)
|
||
return false;
|
||
if (bfd_read (hdr, 1, hdrLength, abfd) != hdrLength)
|
||
return false;
|
||
}
|
||
|
||
/* If we have found a Cygnus header, process it. Otherwise,
|
||
just save the associated data without trying to interpret
|
||
it. */
|
||
if (strncmp (dataStamp, "CyGnUsEx", 8) == 0)
|
||
{
|
||
file_ptr pos;
|
||
bfd_byte *contents;
|
||
bfd_byte *p, *pend;
|
||
|
||
BFD_ASSERT (hdrLength == 0 && hdr == NULL);
|
||
|
||
pos = bfd_tell (abfd);
|
||
if (bfd_seek (abfd, dataOffset, SEEK_SET) != 0)
|
||
return false;
|
||
contents = (bfd_byte *) bfd_alloc (abfd, dataLength);
|
||
if (contents == NULL)
|
||
return false;
|
||
if (bfd_read (contents, 1, dataLength, abfd) != dataLength)
|
||
return false;
|
||
if (bfd_seek (abfd, pos, SEEK_SET) != 0)
|
||
return false;
|
||
|
||
memcpy (nlm_cygnus_ext_header (abfd), "CyGnUsEx", 8);
|
||
nlm_cygnus_ext_header (abfd)->offset = dataOffset;
|
||
nlm_cygnus_ext_header (abfd)->length = dataLength;
|
||
|
||
/* This data this header points to provides a list of
|
||
the sections which were in the original object file
|
||
which was converted to become an NLM. We locate
|
||
those sections and add them to the BFD. Note that
|
||
this is likely to create a second .text, .data and
|
||
.bss section; retrieving the sections by name will
|
||
get the actual NLM sections, which is what we want to
|
||
happen. The sections from the original file, which
|
||
may be subsets of the NLM section, can only be found
|
||
using bfd_map_over_sections. */
|
||
p = contents;
|
||
pend = p + dataLength;
|
||
while (p < pend)
|
||
{
|
||
char *name;
|
||
size_t l;
|
||
file_ptr filepos;
|
||
bfd_size_type size;
|
||
asection *newsec;
|
||
|
||
/* The format of this information is
|
||
null terminated section name
|
||
zeroes to adjust to 4 byte boundary
|
||
4 byte section data file pointer
|
||
4 byte section size
|
||
*/
|
||
|
||
name = (char *) p;
|
||
l = strlen (name) + 1;
|
||
l = (l + 3) &~ 3;
|
||
p += l;
|
||
filepos = bfd_h_get_32 (abfd, p);
|
||
p += 4;
|
||
size = bfd_h_get_32 (abfd, p);
|
||
p += 4;
|
||
|
||
newsec = bfd_make_section_anyway (abfd, name);
|
||
if (newsec == (asection *) NULL)
|
||
return false;
|
||
newsec->_raw_size = size;
|
||
if (filepos != 0)
|
||
{
|
||
newsec->filepos = filepos;
|
||
newsec->flags |= SEC_HAS_CONTENTS;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
memcpy (nlm_custom_header (abfd)->stamp, thdr.stamp,
|
||
sizeof (thdr.stamp));
|
||
nlm_custom_header (abfd)->hdrLength = hdrLength;
|
||
nlm_custom_header (abfd)->dataOffset = dataOffset;
|
||
nlm_custom_header (abfd)->dataLength = dataLength;
|
||
memcpy (nlm_custom_header (abfd)->dataStamp, dataStamp,
|
||
sizeof (dataStamp));
|
||
nlm_custom_header (abfd)->hdr = hdr;
|
||
}
|
||
}
|
||
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))
|
||
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)->sharedDebugRecordOffset,
|
||
(bfd_byte *) thdr.sharedDebugRecordOffset);
|
||
put_word (abfd,
|
||
(bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordCount,
|
||
(bfd_byte *) thdr.sharedDebugRecordCount);
|
||
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))
|
||
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);
|
||
if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd)
|
||
!= sizeof (thdr.stamp))
|
||
return false;
|
||
thdr.copyrightMessageLength[0] =
|
||
nlm_copyright_header (abfd)->copyrightMessageLength;
|
||
if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1)
|
||
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) !=
|
||
((bfd_size_type)
|
||
nlm_copyright_header (abfd)->copyrightMessageLength + 1))
|
||
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;
|
||
boolean ds;
|
||
bfd_size_type hdrLength;
|
||
|
||
ds = find_nonzero ((PTR) nlm_custom_header (abfd)->dataStamp,
|
||
sizeof (nlm_custom_header (abfd)->dataStamp));
|
||
memcpy (thdr.stamp, "CuStHeAd", 8);
|
||
hdrLength = (2 * NLM_TARGET_LONG_SIZE + (ds ? 8 : 0)
|
||
+ nlm_custom_header (abfd)->hdrLength);
|
||
put_word (abfd, hdrLength, thdr.length);
|
||
put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataOffset,
|
||
thdr.dataOffset);
|
||
put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataLength,
|
||
thdr.dataLength);
|
||
if (! ds)
|
||
{
|
||
BFD_ASSERT (nlm_custom_header (abfd)->hdrLength == 0);
|
||
if (bfd_write ((PTR) &thdr, 1,
|
||
sizeof (thdr) - sizeof (thdr.dataStamp), abfd)
|
||
!= sizeof (thdr) - sizeof (thdr.dataStamp))
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
memcpy (thdr.dataStamp, nlm_custom_header (abfd)->dataStamp,
|
||
sizeof (thdr.dataStamp));
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
return false;
|
||
if (bfd_write (nlm_custom_header (abfd)->hdr, 1,
|
||
nlm_custom_header (abfd)->hdrLength, abfd)
|
||
!= nlm_custom_header (abfd)->hdrLength)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Write out the Cygnus debugging header if there is one. */
|
||
if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd),
|
||
sizeof (Nlm_Internal_Cygnus_Ext_Header)))
|
||
{
|
||
Nlm_External_Custom_Header thdr;
|
||
|
||
memcpy (thdr.stamp, "CuStHeAd", 8);
|
||
put_word (abfd, (bfd_vma) 2 * NLM_TARGET_LONG_SIZE + 8,
|
||
(bfd_byte *) thdr.length);
|
||
put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->offset,
|
||
(bfd_byte *) thdr.dataOffset);
|
||
put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->length,
|
||
(bfd_byte *) thdr.dataLength);
|
||
memcpy (thdr.dataStamp, "CyGnUsEx", 8);
|
||
if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr))
|
||
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. */
|
||
|
||
long
|
||
nlm_get_symtab_upper_bound (abfd)
|
||
bfd *abfd;
|
||
{
|
||
Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */
|
||
long symcount;
|
||
long symtab_size = 0;
|
||
|
||
i_fxdhdrp = nlm_fixed_header (abfd);
|
||
symcount = (i_fxdhdrp->numberOfPublics
|
||
+ i_fxdhdrp->numberOfDebugRecords
|
||
+ 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. */
|
||
|
||
long
|
||
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 -1;
|
||
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));
|
||
if (new)
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
/* Get symbol information. */
|
||
|
||
void
|
||
nlm_get_symbol_info (ignore_abfd, symbol, ret)
|
||
bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
||
asymbol *symbol;
|
||
symbol_info *ret;
|
||
{
|
||
bfd_symbol_info (symbol, ret);
|
||
}
|
||
|
||
/* Print symbol information. */
|
||
|
||
void
|
||
nlm_print_symbol (abfd, afile, symbol, how)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
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
|
||
|
||
We also read in the debugging symbols and import records. Import
|
||
records are treated as undefined symbols. As we read the import
|
||
records 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 */
|
||
unsigned char symlength; /* Symbol length read into here */
|
||
unsigned char symtype; /* Type of debugging symbol */
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */
|
||
boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *));
|
||
boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *));
|
||
|
||
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->numberOfDebugRecords
|
||
+ i_fxdhdrp->numberOfExternalReferences);
|
||
if (totsymcount == 0)
|
||
{
|
||
return (true);
|
||
}
|
||
|
||
if (bfd_seek (abfd, i_fxdhdrp->publicsOffset, SEEK_SET) == -1)
|
||
return (false);
|
||
|
||
sym = ((nlm_symbol_type *)
|
||
bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type)));
|
||
if (!sym)
|
||
return false;
|
||
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. */
|
||
|
||
set_public_section_func = nlm_set_public_section_func (abfd);
|
||
symcount = i_fxdhdrp->numberOfPublics;
|
||
while (abfd->symcount < symcount)
|
||
{
|
||
if (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd)
|
||
!= sizeof (symlength))
|
||
return (false);
|
||
sym->symbol.the_bfd = abfd;
|
||
sym->symbol.name = bfd_alloc (abfd, symlength + 1);
|
||
if (!sym->symbol.name)
|
||
return false;
|
||
if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd)
|
||
!= symlength)
|
||
return (false);
|
||
/* Cast away const. */
|
||
((char *) (sym->symbol.name))[symlength] = '\0';
|
||
if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
return (false);
|
||
sym->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
|
||
sym->symbol.value = get_word (abfd, temp);
|
||
if (set_public_section_func)
|
||
{
|
||
/* Most backends can use the code below, but unfortunately
|
||
some use a different scheme. */
|
||
if ((*set_public_section_func) (abfd, sym) == false)
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
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 the debugging records. */
|
||
|
||
if (i_fxdhdrp->numberOfDebugRecords > 0)
|
||
{
|
||
if (bfd_seek (abfd, i_fxdhdrp->debugInfoOffset, SEEK_SET) == -1)
|
||
return (false);
|
||
|
||
symcount += i_fxdhdrp->numberOfDebugRecords;
|
||
while (abfd->symcount < symcount)
|
||
{
|
||
if ((bfd_read ((PTR) & symtype, sizeof (symtype), 1, abfd)
|
||
!= sizeof (symtype))
|
||
|| bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)
|
||
|| (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd)
|
||
!= sizeof (symlength)))
|
||
return false;
|
||
sym->symbol.the_bfd = abfd;
|
||
sym->symbol.name = bfd_alloc (abfd, symlength + 1);
|
||
if (!sym->symbol.name)
|
||
return false;
|
||
if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd)
|
||
!= symlength)
|
||
return (false);
|
||
/* Cast away const. */
|
||
((char *) (sym->symbol.name))[symlength] = '\0';
|
||
sym->symbol.flags = BSF_LOCAL;
|
||
sym->symbol.value = get_word (abfd, temp);
|
||
if (symtype == 0)
|
||
{
|
||
sym->symbol.section =
|
||
bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
|
||
}
|
||
else if (symtype == 1)
|
||
{
|
||
sym->symbol.flags |= BSF_FUNCTION;
|
||
sym->symbol.section =
|
||
bfd_get_section_by_name (abfd, NLM_CODE_NAME);
|
||
}
|
||
else
|
||
{
|
||
sym->symbol.section = bfd_abs_section_ptr;
|
||
}
|
||
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_import_func = nlm_read_import_func (abfd);
|
||
if (read_import_func != NULL)
|
||
{
|
||
if (bfd_seek (abfd, i_fxdhdrp->externalReferencesOffset, SEEK_SET)
|
||
== -1)
|
||
return (false);
|
||
|
||
symcount += i_fxdhdrp->numberOfExternalReferences;
|
||
while (abfd->symcount < symcount)
|
||
{
|
||
if ((*read_import_func) (abfd, sym) == false)
|
||
return false;
|
||
sym++;
|
||
abfd->symcount++;
|
||
}
|
||
}
|
||
|
||
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)
|
||
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) && count != 0)
|
||
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. */
|
||
|
||
long
|
||
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 -1;
|
||
/* 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) == false)
|
||
return -1;
|
||
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. */
|
||
|
||
long
|
||
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) == false)
|
||
return -1;
|
||
rels = nlm_relocation_fixups (abfd);
|
||
}
|
||
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;
|
||
unsigned int text_align, data_align, other_align;
|
||
file_ptr text_ptr, data_ptr, other_ptr;
|
||
asection *bss_sec;
|
||
asymbol **sym_ptr_ptr;
|
||
|
||
if (abfd->output_has_begun == true)
|
||
return true;
|
||
|
||
/* 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);
|
||
}
|
||
|
||
abfd->output_has_begun = true;
|
||
|
||
/* The fixed header. */
|
||
sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd);
|
||
|
||
/* 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_copyright_header (abfd),
|
||
sizeof (Nlm_Internal_Copyright_Header)))
|
||
sofar += (sizeof (Nlm_External_Copyright_Header)
|
||
+ nlm_copyright_header (abfd)->copyrightMessageLength + 1);
|
||
if (find_nonzero ((PTR) nlm_custom_header (abfd),
|
||
sizeof (Nlm_Internal_Custom_Header)))
|
||
sofar += (sizeof (Nlm_External_Custom_Header)
|
||
+ nlm_custom_header (abfd)->hdrLength);
|
||
if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd),
|
||
sizeof (Nlm_Internal_Cygnus_Ext_Header)))
|
||
sofar += sizeof (Nlm_External_Custom_Header);
|
||
|
||
/* 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);
|
||
|
||
if (nlm_no_uninitialized_data (abfd))
|
||
{
|
||
/* This NetWare format does not use uninitialized data. We must
|
||
increase the size of the data section. We will never wind up
|
||
writing those file locations, so they will remain zero. */
|
||
data += bss;
|
||
bss = 0;
|
||
}
|
||
|
||
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;
|
||
bfd_vma add;
|
||
|
||
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);
|
||
}
|
||
if (add != 0)
|
||
{
|
||
if (nlm_no_uninitialized_data (abfd))
|
||
{
|
||
/* We could handle this case, but so far it hasn't been
|
||
necessary. */
|
||
abort ();
|
||
}
|
||
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,
|
||
bfd_vma, bfd_size_type));
|
||
|
||
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)
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We need to sort a list of relocs associated with sections when we
|
||
write out the external relocs. */
|
||
|
||
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;
|
||
int cmp;
|
||
|
||
cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name,
|
||
(*r2->rel->sym_ptr_ptr)->name);
|
||
if (cmp != 0)
|
||
return cmp;
|
||
|
||
/* We sort by address within symbol to make the sort more stable and
|
||
increase the chances that different hosts will generate bit for
|
||
bit equivalent results. */
|
||
return (int) (r1->rel->address - r2->rel->address);
|
||
}
|
||
|
||
/* 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;
|
||
{
|
||
asection *sec;
|
||
boolean (*write_import_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;
|
||
file_ptr last;
|
||
boolean (*write_prefix_func) PARAMS ((bfd *));
|
||
unsigned char *fixed_header = NULL;
|
||
|
||
fixed_header = ((unsigned char *)
|
||
bfd_malloc ((size_t) nlm_fixed_header_size (abfd)));
|
||
if (fixed_header == NULL)
|
||
goto error_return;
|
||
|
||
if (abfd->output_has_begun == false
|
||
&& nlm_compute_section_file_positions (abfd) == false)
|
||
goto error_return;
|
||
|
||
/* Write out the variable length headers. */
|
||
if (bfd_seek (abfd,
|
||
nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd),
|
||
SEEK_SET) != 0)
|
||
goto error_return;
|
||
if (nlm_swap_variable_header_out (abfd) == false
|
||
|| nlm_swap_auxiliary_headers_out (abfd) == false)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
goto error_return;
|
||
}
|
||
|
||
/* A weak check on whether the section file positions were
|
||
reasonable. */
|
||
if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
goto error_return;
|
||
}
|
||
|
||
/* Advance to the relocs. */
|
||
if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset,
|
||
SEEK_SET) != 0)
|
||
goto error_return;
|
||
|
||
/* The format of the relocation entries is dependent upon the
|
||
particular target. We use an external routine to write the reloc
|
||
out. */
|
||
write_import_func = nlm_write_import_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. We ignore them for a debugging section. */
|
||
if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0)
|
||
continue;
|
||
|
||
/* We need to know how to write out imports */
|
||
if (write_import_func == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
goto error_return;
|
||
}
|
||
|
||
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_is_und_section (bfd_get_section (sym)))
|
||
{
|
||
++internal_reloc_count;
|
||
if ((*write_import_func) (abfd, sec, rel) == false)
|
||
goto error_return;
|
||
}
|
||
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)
|
||
goto error_return;
|
||
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_is_und_section (bfd_get_section (sym)))
|
||
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 ((PTR) external_relocs, (size_t) 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_size_type j, cnt;
|
||
|
||
++c;
|
||
|
||
rel = external_relocs[i].rel;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
cnt = 0;
|
||
for (j = i;
|
||
(j < external_reloc_count
|
||
&& *external_relocs[j].rel->sym_ptr_ptr == sym);
|
||
j++)
|
||
++cnt;
|
||
|
||
if ((*nlm_write_external_func (abfd)) (abfd, cnt, sym,
|
||
&external_relocs[i])
|
||
== false)
|
||
goto error_return;
|
||
|
||
i += cnt;
|
||
}
|
||
|
||
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)
|
||
{
|
||
bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *));
|
||
boolean (*write_export_func) PARAMS ((bfd *, asymbol *, bfd_vma));
|
||
|
||
asymbol **sym_end;
|
||
|
||
nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd);
|
||
get_public_offset_func = nlm_get_public_offset_func (abfd);
|
||
write_export_func = nlm_write_export_func (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;
|
||
bfd_byte temp[NLM_TARGET_LONG_SIZE];
|
||
|
||
sym = *sym_ptr_ptr;
|
||
|
||
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0
|
||
|| bfd_is_und_section (bfd_get_section (sym)))
|
||
continue;
|
||
|
||
++c;
|
||
|
||
if (get_public_offset_func)
|
||
{
|
||
/* Most backends can use the code below, but
|
||
unfortunately some use a different scheme. */
|
||
offset = (*get_public_offset_func) (abfd, sym);
|
||
}
|
||
else
|
||
{
|
||
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_set_error (bfd_error_invalid_operation);
|
||
goto error_return;
|
||
}
|
||
}
|
||
|
||
if (write_export_func)
|
||
{
|
||
if ((*write_export_func) (abfd, sym, offset) == false)
|
||
goto error_return;
|
||
}
|
||
else
|
||
{
|
||
len = strlen (sym->name);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (sym->name, len, 1, abfd) != len)
|
||
goto error_return;
|
||
|
||
put_word (abfd, offset, temp);
|
||
if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
goto error_return;
|
||
}
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfPublics = c;
|
||
|
||
/* Write out the debugging records. The NLM conversion program
|
||
wants to be able to inhibit this, so as a special hack if
|
||
debugInfoOffset is set to -1 we don't write any debugging
|
||
information. This can not be handled by fiddling with the
|
||
symbol table, because exported symbols appear in both the
|
||
exported symbol list and the debugging information. */
|
||
if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) - 1)
|
||
{
|
||
nlm_fixed_header (abfd)->debugInfoOffset = 0;
|
||
nlm_fixed_header (abfd)->numberOfDebugRecords = 0;
|
||
}
|
||
else
|
||
{
|
||
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;
|
||
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_is_und_section (bfd_get_section (sym)))
|
||
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))
|
||
{
|
||
/* SEC_ALLOC is for the .bss section. */
|
||
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))
|
||
goto error_return;
|
||
|
||
put_word (abfd, offset, temp);
|
||
if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
|
||
goto error_return;
|
||
|
||
len = strlen (sym->name);
|
||
if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd)
|
||
!= sizeof (bfd_byte))
|
||
|| bfd_write (sym->name, len, 1, abfd) != len)
|
||
goto error_return;
|
||
}
|
||
nlm_fixed_header (abfd)->numberOfDebugRecords = c;
|
||
}
|
||
}
|
||
|
||
/* NLMLINK fills in offset values even if there is no data, so we do
|
||
the same. */
|
||
last = bfd_tell (abfd);
|
||
if (nlm_fixed_header (abfd)->codeImageOffset == 0)
|
||
nlm_fixed_header (abfd)->codeImageOffset = last;
|
||
if (nlm_fixed_header (abfd)->dataImageOffset == 0)
|
||
nlm_fixed_header (abfd)->dataImageOffset = last;
|
||
if (nlm_fixed_header (abfd)->customDataOffset == 0)
|
||
nlm_fixed_header (abfd)->customDataOffset = last;
|
||
if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0)
|
||
nlm_fixed_header (abfd)->moduleDependencyOffset = last;
|
||
if (nlm_fixed_header (abfd)->relocationFixupOffset == 0)
|
||
nlm_fixed_header (abfd)->relocationFixupOffset = last;
|
||
if (nlm_fixed_header (abfd)->externalReferencesOffset == 0)
|
||
nlm_fixed_header (abfd)->externalReferencesOffset = last;
|
||
if (nlm_fixed_header (abfd)->publicsOffset == 0)
|
||
nlm_fixed_header (abfd)->publicsOffset = last;
|
||
if (nlm_fixed_header (abfd)->debugInfoOffset == 0)
|
||
nlm_fixed_header (abfd)->debugInfoOffset = last;
|
||
|
||
/* At this point everything has been written out except the fixed
|
||
header. */
|
||
memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd),
|
||
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. */
|
||
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);
|
||
|
||
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
|
||
goto error_return;
|
||
|
||
write_prefix_func = nlm_write_prefix_func (abfd);
|
||
if (write_prefix_func)
|
||
{
|
||
if ((*write_prefix_func) (abfd) == false)
|
||
goto error_return;
|
||
}
|
||
|
||
BFD_ASSERT ((bfd_size_type) bfd_tell (abfd)
|
||
== nlm_optional_prefix_size (abfd));
|
||
|
||
nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header);
|
||
if (bfd_write (fixed_header, nlm_fixed_header_size (abfd), 1, abfd)
|
||
!= nlm_fixed_header_size (abfd))
|
||
goto error_return;
|
||
|
||
if (fixed_header != NULL)
|
||
free (fixed_header);
|
||
return true;
|
||
|
||
error_return:
|
||
if (fixed_header != NULL)
|
||
free (fixed_header);
|
||
return false;
|
||
}
|