19990502 sourceware importbinu_ss_19990502

1 files changed, 264 insertions, 0 deletions

diff --git a/bfd/libnlm.h b/bfd/libnlm.h
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+/* BFD back-end data structures for NLM (NetWare Loadable Modules) files.
+   Copyright (C) 1993 Free Software Foundation, Inc.
+   Written by Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _LIBNLM_H_
+#define _LIBNLM_H_ 1
+
+#ifdef ARCH_SIZE
+#  define NLM_ARCH_SIZE ARCH_SIZE
+#endif
+#include "nlm/common.h"
+#include "nlm/internal.h"
+#include "nlm/external.h"
+
+/* A reloc for an imported NLM symbol.  Normal relocs are associated
+   with sections, and include a symbol.  These relocs are associated
+   with (undefined) symbols, and include a section.  */
+
+struct nlm_relent
+{
+  /* Section of reloc.  */
+  asection *section;
+  /* Reloc info (sym_ptr_ptr field set only when canonicalized).  */
+  arelent reloc;
+};
+
+/* Information we keep for an NLM symbol.  */
+
+typedef struct
+{
+  /* BFD symbol.  */
+  asymbol symbol;
+  /* Number of reloc entries for imported symbol.  */
+  bfd_size_type rcnt;
+  /* Array of reloc information for imported symbol.  */
+  struct nlm_relent *relocs;
+} nlmNAME(symbol_type);
+
+extern boolean nlm_mkobject PARAMS ((bfd *));
+extern boolean nlm_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
+					  unsigned long));
+
+extern void nlmNAME(get_symbol_info)
+     PARAMS ((bfd *, asymbol *, symbol_info *));
+extern long nlmNAME(get_symtab_upper_bound)
+     PARAMS ((bfd *));
+extern long nlmNAME(get_symtab)
+     PARAMS ((bfd *, asymbol **));
+extern asymbol *nlmNAME(make_empty_symbol)
+     PARAMS ((bfd *));
+extern void nlmNAME(print_symbol)
+     PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
+extern long nlmNAME(get_reloc_upper_bound)
+     PARAMS ((bfd *, asection *));
+extern long nlmNAME(canonicalize_reloc)
+     PARAMS ((bfd *, asection *, arelent **, asymbol **));
+extern const bfd_target *nlmNAME(object_p)
+     PARAMS ((bfd *));
+extern boolean nlmNAME(set_arch_mach)
+     PARAMS ((bfd *, enum bfd_architecture, unsigned long));
+extern boolean nlmNAME(set_section_contents)
+     PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
+extern boolean nlmNAME(write_object_contents)
+     PARAMS ((bfd *));
+
+/* Some private data is stashed away for future use using the tdata pointer
+   in the bfd structure.  */
+
+struct nlm_obj_tdata
+{
+  /* Actual data, but ref like ptr */
+  Nlm_Internal_Fixed_Header	nlm_fixed_hdr[1];
+  Nlm_Internal_Variable_Header	nlm_variable_hdr[1];
+  Nlm_Internal_Version_Header	nlm_version_hdr[1];
+  Nlm_Internal_Copyright_Header	nlm_copyright_hdr[1];
+  Nlm_Internal_Extended_Header	nlm_extended_hdr[1];
+  Nlm_Internal_Custom_Header	nlm_custom_hdr[1];
+  Nlm_Internal_Cygnus_Ext_Header nlm_cygnus_ext_hdr[1];
+  /* BFD NLM symbols.  */
+  nlmNAME(symbol_type)		*nlm_symbols;
+  /* Lowest text and data VMA values.  */
+  bfd_vma			nlm_text_low;
+  bfd_vma			nlm_data_low;
+  /* Caches for data read from object file.  */
+  arelent *			nlm_reloc_fixups;
+  asection **			nlm_reloc_fixup_secs;
+  /* Backend specific information.  This should probably be a pointer,
+     but that would require yet another entry point to initialize the
+     structure.  */
+  union
+    {
+      struct	/* Alpha backend information.  */
+	{
+	  bfd_vma gp;			/* GP value.  */
+	  bfd_vma lita_address;		/* .lita section address.  */
+	  bfd_size_type lita_size;	/* .lita section size.  */
+	}
+      alpha_backend_data;
+    }
+  backend_data;
+};
+
+#define nlm_tdata(bfd)			((bfd) -> tdata.nlm_obj_data)
+#define nlm_fixed_header(bfd)		(nlm_tdata(bfd) -> nlm_fixed_hdr)
+#define nlm_variable_header(bfd)	(nlm_tdata(bfd) -> nlm_variable_hdr)
+#define nlm_version_header(bfd)		(nlm_tdata(bfd) -> nlm_version_hdr)
+#define nlm_copyright_header(bfd)	(nlm_tdata(bfd) -> nlm_copyright_hdr)
+#define nlm_extended_header(bfd)	(nlm_tdata(bfd) -> nlm_extended_hdr)
+#define nlm_custom_header(bfd)		(nlm_tdata(bfd) -> nlm_custom_hdr)
+#define nlm_cygnus_ext_header(bfd)	(nlm_tdata(bfd) -> nlm_cygnus_ext_hdr)
+#define nlm_get_symbols(bfd)		(nlm_tdata(bfd) -> nlm_symbols)
+#define nlm_set_symbols(bfd, p)		(nlm_tdata(bfd) -> nlm_symbols = (p))
+#define nlm_set_text_low(bfd, i)	(nlm_tdata(bfd) -> nlm_text_low = (i))
+#define nlm_get_text_low(bfd)		(nlm_tdata(bfd) -> nlm_text_low)
+#define nlm_set_data_low(bfd, i)	(nlm_tdata(bfd) -> nlm_data_low = (i))
+#define nlm_get_data_low(bfd)		(nlm_tdata(bfd) -> nlm_data_low)
+#define nlm_relocation_fixups(bfd)	(nlm_tdata(bfd) -> nlm_reloc_fixups)
+#define nlm_relocation_fixup_secs(bfd)	(nlm_tdata(bfd)->nlm_reloc_fixup_secs)
+
+#define nlm_alpha_backend_data(bfd) \
+  (&nlm_tdata (bfd)->backend_data.alpha_backend_data)
+
+/* This is used when writing out the external relocs. */
+
+struct reloc_and_sec
+{
+  arelent *rel;
+  asection *sec;
+};
+
+/* We store some function pointer in the backend structure.  This lets
+   different NLM targets share most of the same code, while providing
+   slightly different code where necessary.  */
+
+struct nlm_backend_data
+{
+  /* Signature for this backend.  */
+  char signature[NLM_SIGNATURE_SIZE];
+  /* Size of the fixed header.  */
+  bfd_size_type fixed_header_size;
+  /* Size of optional prefix for this backend.  Some backend may
+     require this to be a function, but so far a constant is OK.  This
+     is for a prefix which precedes the standard NLM fixed header.  */
+  bfd_size_type optional_prefix_size;
+  /* Architecture.  */
+  enum bfd_architecture arch;
+  /* Machine.  */
+  long mach;
+  /* Some NLM formats do not use the uninitialized data section, so
+     all uninitialized data must be put into the regular data section
+     instead.  */
+  boolean no_uninitialized_data;
+  /* Some NLM formats have a prefix on the file.  If this function is
+     not NULL, it will be called by nlm_object_p.  It should return
+     true if this file could match this format, and it should leave
+     the BFD such that a bfd_read will pick up the fixed header.  */
+  boolean (*nlm_backend_object_p) PARAMS ((bfd *));
+  /* Write out the prefix.  This function may be NULL.  This must
+     write out the same number of bytes as is in the field
+     optional_prefix_size.  */
+  boolean (*nlm_write_prefix) PARAMS ((bfd *));
+  /* Read a relocation fixup from abfd.  The reloc information is
+     machine specific.  The second argument is the symbol if this is
+     an import, or NULL if this is a reloc fixup.  This function
+     should set the third argument to the section which the reloc
+     belongs in, and the fourth argument to the reloc itself; it does
+     not need to fill in the sym_ptr_ptr field for a reloc against an
+     import symbol.  */
+  boolean (*nlm_read_reloc) PARAMS ((bfd *, nlmNAME(symbol_type) *,
+				     asection **, arelent *));
+  /* To make objcopy to an i386 NLM work, the i386 backend needs a
+     chance to work over the relocs.  This is a bit icky.  */
+  boolean (*nlm_mangle_relocs) PARAMS ((bfd *, asection *, PTR data,
+					bfd_vma offset,
+					bfd_size_type count));
+  /* Read an import record from abfd.  It would be nice if this
+     were in a machine-dependent format, but it doesn't seem to be. */
+  boolean (*nlm_read_import) PARAMS ((bfd *, nlmNAME(symbol_type) *));
+  /* Write an import record to abfd. */
+  boolean (*nlm_write_import) PARAMS ((bfd *, asection *, arelent *));
+  /* Set the section for a public symbol.  This may be NULL, in which
+     case a default method will be used.  */
+  boolean (*nlm_set_public_section) PARAMS ((bfd *, nlmNAME(symbol_type) *));
+  /* Get the offset to write out for a public symbol.  This may be
+     NULL, in which case a default method will be used.  */
+  bfd_vma (*nlm_get_public_offset) PARAMS ((bfd *, asymbol *));
+  /* Swap the fixed header in and out */
+  void (*nlm_swap_fhdr_in) PARAMS ((bfd *,
+				    PTR,
+				    Nlm_Internal_Fixed_Header *));
+  void (*nlm_swap_fhdr_out) PARAMS ((bfd *,
+				     struct nlm_internal_fixed_header *,
+				     PTR));
+  /* Write out an external reference.  */
+  boolean (*nlm_write_external) PARAMS ((bfd *, bfd_size_type,
+					 asymbol *,
+					 struct reloc_and_sec *));
+  boolean (*nlm_write_export) PARAMS ((bfd *, asymbol *, bfd_vma));
+};
+
+#define nlm_backend(bfd) \
+  ((struct nlm_backend_data *)((bfd) -> xvec -> backend_data))
+#define nlm_signature(bfd) \
+  (nlm_backend(bfd) -> signature)
+#define nlm_fixed_header_size(bfd) \
+  (nlm_backend(bfd) -> fixed_header_size)
+#define nlm_optional_prefix_size(bfd) \
+  (nlm_backend(bfd) -> optional_prefix_size)
+#define nlm_architecture(bfd) \
+  (nlm_backend(bfd) -> arch)
+#define nlm_machine(bfd) \
+  (nlm_backend(bfd) -> mach)
+#define nlm_no_uninitialized_data(bfd) \
+  (nlm_backend(bfd) -> no_uninitialized_data)
+#define nlm_backend_object_p_func(bfd) \
+  (nlm_backend(bfd) -> nlm_backend_object_p)
+#define nlm_write_prefix_func(bfd) \
+  (nlm_backend(bfd) -> nlm_write_prefix)
+#define nlm_read_reloc_func(bfd) \
+  (nlm_backend(bfd) -> nlm_read_reloc)
+#define nlm_mangle_relocs_func(bfd) \
+  (nlm_backend(bfd) -> nlm_mangle_relocs)
+#define nlm_read_import_func(bfd) \
+  (nlm_backend(bfd) -> nlm_read_import)
+#define nlm_write_import_func(bfd) \
+  (nlm_backend(bfd) -> nlm_write_import)
+#define nlm_set_public_section_func(bfd) \
+  (nlm_backend(bfd) -> nlm_set_public_section)
+#define nlm_get_public_offset_func(bfd) \
+  (nlm_backend(bfd) -> nlm_get_public_offset)
+#define nlm_swap_fixed_header_in_func(bfd) \
+  (nlm_backend(bfd) -> nlm_swap_fhdr_in)
+#define nlm_swap_fixed_header_out_func(bfd) \
+  (nlm_backend(bfd) -> nlm_swap_fhdr_out)
+#define nlm_write_external_func(bfd) \
+  (nlm_backend(bfd) -> nlm_write_external)
+#define nlm_write_export_func(bfd) \
+  (nlm_backend(bfd) -> nlm_write_export)
+
+/* The NLM code, data, and uninitialized sections have no names defined
+   in the NLM, but bfd wants to give them names, so use the traditional
+   UNIX names.  */
+
+#define NLM_CODE_NAME			".text"
+#define NLM_INITIALIZED_DATA_NAME	".data"
+#define NLM_UNINITIALIZED_DATA_NAME	".bss"
+
+#endif /* _LIBNLM_H_ */