Initial creation of sourceware repository

1 files changed, 0 insertions, 3107 deletions

diff --git a/gdb/symfile.c b/gdb/symfile.c
deleted file mode 100644
index ca864dd..0000000
--- a/gdb/symfile.c
+++ /dev/null
@@ -1,3107 +0,0 @@
-/* Generic symbol file reading for the GNU debugger, GDB.
-   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998
-   Free Software Foundation, Inc.
-   Contributed by Cygnus Support, using pieces from other GDB modules.
-
-This file is part of GDB.
-
-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.  */
-
-#include "defs.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "gdbcore.h"
-#include "frame.h"
-#include "target.h"
-#include "value.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "gdbcmd.h"
-#include "breakpoint.h"
-#include "language.h"
-#include "complaints.h"
-#include "demangle.h"
-#include "inferior.h" /* for write_pc */
-#include "gdb-stabs.h"
-#include "obstack.h"
-
-#include <assert.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include "gdb_string.h"
-#include "gdb_stat.h"
-#include <ctype.h>
-#include <time.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-#ifdef HPUXHPPA
-extern int hpread_pxdb_check PARAMS ((bfd *, char *));
-
-/* Some HP-UX related globals to clear when a new "main"
-   symbol file is loaded. HP-specific.  */
-
-extern int hp_som_som_object_present;
-extern int hp_cxx_exception_support_initialized;
-#define RESET_HP_UX_GLOBALS() do {\
-                                    hp_som_som_object_present = 0;             /* indicates HP-compiled code */        \
-                                    hp_cxx_exception_support_initialized = 0;  /* must reinitialize exception stuff */ \
-                              } while (0)
-#endif
-
-int (*ui_load_progress_hook) PARAMS ((char *, unsigned long));
-void (*pre_add_symbol_hook) PARAMS ((char *));
-void (*post_add_symbol_hook) PARAMS ((void));
-
-/* Global variables owned by this file */
-int readnow_symbol_files;		/* Read full symbols immediately */
-
-struct complaint oldsyms_complaint = {
-  "Replacing old symbols for `%s'", 0, 0
-};
-
-struct complaint empty_symtab_complaint = {
-  "Empty symbol table found for `%s'", 0, 0
-};
-
-/* External variables and functions referenced. */
-
-extern int info_verbose;
-
-extern void report_transfer_performance PARAMS ((unsigned long,
-						 time_t, time_t));
-
-/* Functions this file defines */
-
-#if 0
-static int simple_read_overlay_region_table PARAMS ((void));
-static void simple_free_overlay_region_table PARAMS ((void));
-#endif
-
-static void set_initial_language PARAMS ((void));
-
-static void load_command PARAMS ((char *, int));
-
-static void add_symbol_file_command PARAMS ((char *, int));
-
-static void add_shared_symbol_files_command PARAMS ((char *, int));
-
-static void cashier_psymtab PARAMS ((struct partial_symtab *));
-
-static int compare_psymbols PARAMS ((const void *, const void *));
-
-static int compare_symbols PARAMS ((const void *, const void *));
-
-bfd *symfile_bfd_open PARAMS ((char *));
-
-static void find_sym_fns PARAMS ((struct objfile *));
-
-static void decrement_reading_symtab PARAMS ((void *));
-
-static void overlay_invalidate_all PARAMS ((void));
-
-static int overlay_is_mapped PARAMS ((struct obj_section *));
-
-void list_overlays_command PARAMS ((char *, int));
-
-void map_overlay_command PARAMS ((char *, int));
-
-void unmap_overlay_command PARAMS ((char *, int));
-
-static void overlay_auto_command PARAMS ((char *, int));
-
-static void overlay_manual_command PARAMS ((char *, int));
-
-static void overlay_off_command PARAMS ((char *, int));
-
-static void overlay_load_command PARAMS ((char *, int));
-
-static void overlay_command PARAMS ((char *, int));
-
-static void simple_free_overlay_table PARAMS ((void));
-
-static void read_target_long_array PARAMS ((CORE_ADDR, unsigned int *, int));
-
-static int simple_read_overlay_table PARAMS ((void));
-
-static int simple_overlay_update_1 PARAMS ((struct obj_section *));
-
-void _initialize_symfile PARAMS ((void));
-
-/* List of all available sym_fns.  On gdb startup, each object file reader
-   calls add_symtab_fns() to register information on each format it is
-   prepared to read. */
-
-static struct sym_fns *symtab_fns = NULL;
-
-/* Flag for whether user will be reloading symbols multiple times.
-   Defaults to ON for VxWorks, otherwise OFF.  */
-
-#ifdef SYMBOL_RELOADING_DEFAULT
-int symbol_reloading = SYMBOL_RELOADING_DEFAULT;
-#else
-int symbol_reloading = 0;
-#endif
-
-/* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c),
-   this variable is interpreted as a threshhold.  If adding a new
-   library's symbol table to those already known to the debugger would
-   exceed this threshhold, then the shlib's symbols are not added.
-
-   If non-zero on other platforms, shared library symbols will be added
-   automatically when the inferior is created, new libraries are loaded,
-   or when attaching to the inferior.  This is almost always what users
-   will want to have happen; but for very large programs, the startup
-   time will be excessive, and so if this is a problem, the user can
-   clear this flag and then add the shared library symbols as needed.
-   Note that there is a potential for confusion, since if the shared
-   library symbols are not loaded, commands like "info fun" will *not*
-   report all the functions that are actually present. 
-
-   Note that HP-UX interprets this variable to mean, "threshhold size
-   in megabytes, where zero means never add".  Other platforms interpret
-   this variable to mean, "always add if non-zero, never add if zero."
-   */
-
-int auto_solib_add = 1;
-
-
-/* Since this function is called from within qsort, in an ANSI environment
-   it must conform to the prototype for qsort, which specifies that the
-   comparison function takes two "void *" pointers. */
-
-static int
-compare_symbols (s1p, s2p)
-     const PTR s1p;
-     const PTR s2p;
-{
-  register struct symbol **s1, **s2;
-
-  s1 = (struct symbol **) s1p;
-  s2 = (struct symbol **) s2p;
-
-  return (STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2)));
-}
-
-/*
-
-LOCAL FUNCTION
-
-	compare_psymbols -- compare two partial symbols by name
-
-DESCRIPTION
-
-	Given pointers to pointers to two partial symbol table entries,
-	compare them by name and return -N, 0, or +N (ala strcmp).
-	Typically used by sorting routines like qsort().
-
-NOTES
-
-	Does direct compare of first two characters before punting
-	and passing to strcmp for longer compares.  Note that the
-	original version had a bug whereby two null strings or two
-	identically named one character strings would return the
-	comparison of memory following the null byte.
-
- */
-
-static int
-compare_psymbols (s1p, s2p)
-     const PTR s1p;
-     const PTR s2p;
-{
-  register char *st1 = SYMBOL_NAME (*(struct partial_symbol **) s1p);
-  register char *st2 = SYMBOL_NAME (*(struct partial_symbol **) s2p);
-
-  if ((st1[0] - st2[0]) || !st1[0])
-    {
-      return (st1[0] - st2[0]);
-    }
-  else if ((st1[1] - st2[1]) || !st1[1])
-    {
-      return (st1[1] - st2[1]);
-    }
-  else
-    {
-      /* Note: I replaced the STRCMP line (commented out below)
-       * with a simpler "strcmp()" which compares the 2 strings
-       * from the beginning. (STRCMP is a macro which first compares
-       * the initial characters, then falls back on strcmp).
-       * The reason is that the STRCMP line was tickling a C compiler
-       * bug on HP-UX 10.30, which is avoided with the simpler
-       * code. The performance gain from the more complicated code
-       * is negligible, given that we have already checked the
-       * initial 2 characters above. I reported the compiler bug,
-       * and once it is fixed the original line can be put back. RT
-       */
-      /* return ( STRCMP (st1 + 2, st2 + 2)); */
-      return ( strcmp (st1, st2));
-    }
-}
-
-void
-sort_pst_symbols (pst)
-     struct partial_symtab *pst;
-{
-  /* Sort the global list; don't sort the static list */
-
-  qsort (pst -> objfile -> global_psymbols.list + pst -> globals_offset,
-	 pst -> n_global_syms, sizeof (struct partial_symbol *),
-	 compare_psymbols);
-}
-
-/* Call sort_block_syms to sort alphabetically the symbols of one block.  */
-
-void
-sort_block_syms (b)
-     register struct block *b;
-{
-  qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
-	 sizeof (struct symbol *), compare_symbols);
-}
-
-/* Call sort_symtab_syms to sort alphabetically
-   the symbols of each block of one symtab.  */
-
-void
-sort_symtab_syms (s)
-     register struct symtab *s;
-{
-  register struct blockvector *bv;
-  int nbl;
-  int i;
-  register struct block *b;
-
-  if (s == 0)
-    return;
-  bv = BLOCKVECTOR (s);
-  nbl = BLOCKVECTOR_NBLOCKS (bv);
-  for (i = 0; i < nbl; i++)
-    {
-      b = BLOCKVECTOR_BLOCK (bv, i);
-      if (BLOCK_SHOULD_SORT (b))
-	sort_block_syms (b);
-    }
-}
-
-/* Make a null terminated copy of the string at PTR with SIZE characters in
-   the obstack pointed to by OBSTACKP .  Returns the address of the copy.
-   Note that the string at PTR does not have to be null terminated, I.E. it
-   may be part of a larger string and we are only saving a substring. */
-
-char *
-obsavestring (ptr, size, obstackp)
-     char *ptr;
-     int size;
-     struct obstack *obstackp;
-{
-  register char *p = (char *) obstack_alloc (obstackp, size + 1);
-  /* Open-coded memcpy--saves function call time.  These strings are usually
-     short.  FIXME: Is this really still true with a compiler that can
-     inline memcpy? */
-  {
-    register char *p1 = ptr;
-    register char *p2 = p;
-    char *end = ptr + size;
-    while (p1 != end)
-      *p2++ = *p1++;
-  }
-  p[size] = 0;
-  return p;
-}
-
-/* Concatenate strings S1, S2 and S3; return the new string.  Space is found
-   in the obstack pointed to by OBSTACKP.  */
-
-char *
-obconcat (obstackp, s1, s2, s3)
-     struct obstack *obstackp;
-     const char *s1, *s2, *s3;
-{
-  register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
-  register char *val = (char *) obstack_alloc (obstackp, len);
-  strcpy (val, s1);
-  strcat (val, s2);
-  strcat (val, s3);
-  return val;
-}
-
-/* True if we are nested inside psymtab_to_symtab. */
-
-int currently_reading_symtab = 0;
-
-static void
-decrement_reading_symtab (dummy)
-     void *dummy;
-{
-  currently_reading_symtab--;
-}
-
-/* Get the symbol table that corresponds to a partial_symtab.
-   This is fast after the first time you do it.  In fact, there
-   is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
-   case inline.  */
-
-struct symtab *
-psymtab_to_symtab (pst)
-     register struct partial_symtab *pst;
-{
-  /* If it's been looked up before, return it. */
-  if (pst->symtab)
-    return pst->symtab;
-
-  /* If it has not yet been read in, read it.  */
-  if (!pst->readin)
-    { 
-      struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL);
-      currently_reading_symtab++;
-      (*pst->read_symtab) (pst);
-      do_cleanups (back_to);
-    }
-
-  return pst->symtab;
-}
-
-/* Initialize entry point information for this objfile. */
-
-void
-init_entry_point_info (objfile)
-     struct objfile *objfile;
-{
-  /* Save startup file's range of PC addresses to help blockframe.c
-     decide where the bottom of the stack is.  */
-
-  if (bfd_get_file_flags (objfile -> obfd) & EXEC_P)
-    {
-      /* Executable file -- record its entry point so we'll recognize
-	 the startup file because it contains the entry point.  */
-      objfile -> ei.entry_point = bfd_get_start_address (objfile -> obfd);
-    }
-  else
-    {
-      /* Examination of non-executable.o files.  Short-circuit this stuff.  */
-      objfile -> ei.entry_point = INVALID_ENTRY_POINT;
-    }
-  objfile -> ei.entry_file_lowpc = INVALID_ENTRY_LOWPC;
-  objfile -> ei.entry_file_highpc = INVALID_ENTRY_HIGHPC;
-  objfile -> ei.entry_func_lowpc = INVALID_ENTRY_LOWPC;
-  objfile -> ei.entry_func_highpc = INVALID_ENTRY_HIGHPC;
-  objfile -> ei.main_func_lowpc = INVALID_ENTRY_LOWPC;
-  objfile -> ei.main_func_highpc = INVALID_ENTRY_HIGHPC;
-}
-
-/* Get current entry point address.  */
-
-CORE_ADDR
-entry_point_address()
-{
-  return symfile_objfile ? symfile_objfile->ei.entry_point : 0;
-}
-
-/* Remember the lowest-addressed loadable section we've seen.  
-   This function is called via bfd_map_over_sections. 
-
-   In case of equal vmas, the section with the largest size becomes the
-   lowest-addressed loadable section.
-
-   If the vmas and sizes are equal, the last section is considered the
-   lowest-addressed loadable section.  */
-
-void
-find_lowest_section (abfd, sect, obj)
-     bfd *abfd;
-     asection *sect;
-     PTR obj;
-{
-  asection **lowest = (asection **)obj;
-
-  if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD))
-    return;
-  if (!*lowest)
-    *lowest = sect;		/* First loadable section */
-  else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect))
-    *lowest = sect;		/* A lower loadable section */
-  else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect)
-	   && (bfd_section_size (abfd, (*lowest))
-	       <= bfd_section_size (abfd, sect)))
-    *lowest = sect;
-}
-
-/* Parse the user's idea of an offset for dynamic linking, into our idea
-   of how to represent it for fast symbol reading.  This is the default 
-   version of the sym_fns.sym_offsets function for symbol readers that
-   don't need to do anything special.  It allocates a section_offsets table
-   for the objectfile OBJFILE and stuffs ADDR into all of the offsets.  */
-
-struct section_offsets *
-default_symfile_offsets (objfile, addr)
-     struct objfile *objfile;
-     CORE_ADDR addr;
-{
-  struct section_offsets *section_offsets;
-  int i;
-
-  objfile->num_sections = SECT_OFF_MAX;
-  section_offsets = (struct section_offsets *)
-    obstack_alloc (&objfile -> psymbol_obstack, SIZEOF_SECTION_OFFSETS);
-
-  for (i = 0; i < SECT_OFF_MAX; i++)
-    ANOFFSET (section_offsets, i) = addr;
-  
-  return section_offsets;
-}
-
-
-/* Process a symbol file, as either the main file or as a dynamically
-   loaded file.
-
-   NAME is the file name (which will be tilde-expanded and made
-   absolute herein) (but we don't free or modify NAME itself).
-   FROM_TTY says how verbose to be.  MAINLINE specifies whether this
-   is the main symbol file, or whether it's an extra symbol file such
-   as dynamically loaded code.  If !mainline, ADDR is the address
-   where the text segment was loaded.  If VERBO, the caller has printed
-   a verbose message about the symbol reading (and complaints can be
-   more terse about it).  */
-
-void
-syms_from_objfile (objfile, addr, mainline, verbo)
-     struct objfile *objfile;
-     CORE_ADDR addr;
-     int mainline;
-     int verbo;
-{
-  struct section_offsets *section_offsets;
-  asection *lowest_sect;
-  struct cleanup *old_chain;
-
-  init_entry_point_info (objfile);
-  find_sym_fns (objfile);
-
-  /* Make sure that partially constructed symbol tables will be cleaned up
-     if an error occurs during symbol reading.  */
-  old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile);
-
-  if (mainline) 
-    {
-      /* We will modify the main symbol table, make sure that all its users
-	 will be cleaned up if an error occurs during symbol reading.  */
-      make_cleanup ((make_cleanup_func) clear_symtab_users, 0);
-
-      /* Since no error yet, throw away the old symbol table.  */
-
-      if (symfile_objfile != NULL)
-	{
-	  free_objfile (symfile_objfile);
-	  symfile_objfile = NULL;
-	}
-
-      /* Currently we keep symbols from the add-symbol-file command.
-	 If the user wants to get rid of them, they should do "symbol-file"
-	 without arguments first.  Not sure this is the best behavior
-	 (PR 2207).  */
-
-      (*objfile -> sf -> sym_new_init) (objfile);
-    }
-
-  /* Convert addr into an offset rather than an absolute address.
-     We find the lowest address of a loaded segment in the objfile,
-     and assume that <addr> is where that got loaded.  Due to historical
-     precedent, we warn if that doesn't happen to be a text segment.  */
-
-  if (mainline)
-    {
-      addr = 0;		/* No offset from objfile addresses.  */
-    }
-  else
-    {
-      lowest_sect = bfd_get_section_by_name (objfile->obfd, ".text");
-      if (lowest_sect == NULL)
-	bfd_map_over_sections (objfile->obfd, find_lowest_section,
-			       (PTR) &lowest_sect);
-
-      if (lowest_sect == NULL)
-	warning ("no loadable sections found in added symbol-file %s",
-		 objfile->name);
-      else if ((bfd_get_section_flags (objfile->obfd, lowest_sect) & SEC_CODE)
-	       == 0)
-	/* FIXME-32x64--assumes bfd_vma fits in long.  */
-	warning ("Lowest section in %s is %s at 0x%lx",
-		 objfile->name,
-		 bfd_section_name (objfile->obfd, lowest_sect),
-		 (unsigned long) bfd_section_vma (objfile->obfd, lowest_sect));
-
-      if (lowest_sect)
-	addr -= bfd_section_vma (objfile->obfd, lowest_sect);
-    }
-
-  /* Initialize symbol reading routines for this objfile, allow complaints to
-     appear for this new file, and record how verbose to be, then do the
-     initial symbol reading for this file. */
-
-  (*objfile -> sf -> sym_init) (objfile);
-  clear_complaints (1, verbo);
-
-  section_offsets = (*objfile -> sf -> sym_offsets) (objfile, addr);
-  objfile->section_offsets = section_offsets;
-
-#ifndef IBM6000_TARGET
-  /* This is a SVR4/SunOS specific hack, I think.  In any event, it
-     screws RS/6000.  sym_offsets should be doing this sort of thing,
-     because it knows the mapping between bfd sections and
-     section_offsets.  */
-  /* This is a hack.  As far as I can tell, section offsets are not
-     target dependent.  They are all set to addr with a couple of
-     exceptions.  The exceptions are sysvr4 shared libraries, whose
-     offsets are kept in solib structures anyway and rs6000 xcoff
-     which handles shared libraries in a completely unique way.
-
-     Section offsets are built similarly, except that they are built
-     by adding addr in all cases because there is no clear mapping
-     from section_offsets into actual sections.  Note that solib.c
-     has a different algorythm for finding section offsets.
-
-     These should probably all be collapsed into some target
-     independent form of shared library support.  FIXME.  */
-
-  if (addr)
-    {
-      struct obj_section *s;
-
-      for (s = objfile->sections; s < objfile->sections_end; ++s)
-	{
-	  s->addr -= s->offset;
-	  s->addr += addr;
-	  s->endaddr -= s->offset;
-	  s->endaddr += addr;
-	  s->offset += addr;
-	}
-    }
-#endif /* not IBM6000_TARGET */
-
-  (*objfile -> sf -> sym_read) (objfile, section_offsets, mainline);
-
-  if (!have_partial_symbols () && !have_full_symbols ())
-    {
-      wrap_here ("");
-      printf_filtered ("(no debugging symbols found)...");
-      wrap_here ("");
-    }
-
-  /* Don't allow char * to have a typename (else would get caddr_t).
-     Ditto void *.  FIXME: Check whether this is now done by all the
-     symbol readers themselves (many of them now do), and if so remove
-     it from here.  */
-
-  TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
-  TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0;
-
-  /* Mark the objfile has having had initial symbol read attempted.  Note
-     that this does not mean we found any symbols... */
-
-  objfile -> flags |= OBJF_SYMS;
-
-  /* Discard cleanups as symbol reading was successful.  */
-
-  discard_cleanups (old_chain);
-
-/* Call this after reading in a new symbol table to give target dependant code
-   a crack at the new symbols.  For instance, this could be used to update the
-   values of target-specific symbols GDB needs to keep track of (such as
-   _sigtramp, or whatever).  */
-
-  TARGET_SYMFILE_POSTREAD (objfile);
-}
-
-/* Perform required actions after either reading in the initial
-   symbols for a new objfile, or mapping in the symbols from a reusable
-   objfile. */
-   
-void
-new_symfile_objfile (objfile, mainline, verbo)
-     struct objfile *objfile;
-     int mainline;
-     int verbo;
-{
-
-  /* If this is the main symbol file we have to clean up all users of the
-     old main symbol file. Otherwise it is sufficient to fixup all the
-     breakpoints that may have been redefined by this symbol file.  */
-  if (mainline)
-    {
-      /* OK, make it the "real" symbol file.  */
-      symfile_objfile = objfile;
-
-      clear_symtab_users ();
-    }
-  else
-    {
-      breakpoint_re_set ();
-    }
-
-  /* We're done reading the symbol file; finish off complaints.  */
-  clear_complaints (0, verbo);
-}
-
-/* Process a symbol file, as either the main file or as a dynamically
-   loaded file.
-
-   NAME is the file name (which will be tilde-expanded and made
-   absolute herein) (but we don't free or modify NAME itself).
-   FROM_TTY says how verbose to be.  MAINLINE specifies whether this
-   is the main symbol file, or whether it's an extra symbol file such
-   as dynamically loaded code.  If !mainline, ADDR is the address
-   where the text segment was loaded.
-
-   USER_LOADED is TRUE if the add-symbol-file command was how this
-   symbol file came to be processed.
-
-   IS_SOLIB is TRUE if this symbol file represents a solib, as discovered
-   by the target's implementation of the solib package.
-
-   Upon success, returns a pointer to the objfile that was added.
-   Upon failure, jumps back to command level (never returns). */
-
-struct objfile *
-symbol_file_add (name, from_tty, addr, mainline, mapped, readnow, user_loaded, is_solib)
-     char *name;
-     int from_tty;
-     CORE_ADDR addr;
-     int mainline;
-     int mapped;
-     int readnow;
-     int  user_loaded;
-     int  is_solib;
-{
-  struct objfile *objfile;
-  struct partial_symtab *psymtab;
-  bfd *abfd;
-
-  /* Open a bfd for the file, and give user a chance to burp if we'd be
-     interactively wiping out any existing symbols.  */
-
-  abfd = symfile_bfd_open (name);
-
-#if 0
-#ifdef GDB_TARGET_IS_HPPA 
-{
-  /********* TARGET SPECIFIC CODE (HACK!) **********
-   *
-   * The following code is HP-specific.  The "right" way of
-   * doing this is unknown, but we bet would involve a target-
-   * specific pre-file-load check using a generic mechanism.
-   */
- /* elz: I moved this code from inside the symfile_bfd_open function
-    this way we don't have to worry about recursion. 
-    I also have taken out the call to pxdb from within the check
-    for pxdb processing. Seemed two logically unrelated things, 
-    and I needed a pure checking later on anyway. 
- */
-
-      if( hpread_pxdb_needed( abfd )) 
-      {
-          /*
-           * This file has not been pre-processed. 
-           * Preprocess now 
-           */
-
-         if (hpread_call_pxdb(name))
-         {
-          /* The
-           * call above has used "system" to pre-process
-           * the on-disk file, so we now need to close
-           * and re-open the file.
-           */
-          bfd_close (abfd);	/* This also closes 'desc', */
-                                /* hence the recursion.     */
-          abfd = symfile_bfd_open( name );
-         }
-        else /* we fail miserably without pxdb!!!*/
-             /* the warning to the user has already been given
-                from within the call_pxdb function 
-             */
-         error("Command ignored.\n");
-      }
-}
- /*************** END HACK ********************/
-#endif
-#endif /* 0 */
-
-
-  if ((have_full_symbols () || have_partial_symbols ())
-      && mainline
-      && from_tty
-      && !query ("Load new symbol table from \"%s\"? ", name))
-      error ("Not confirmed.");
-
-  objfile = allocate_objfile (abfd, mapped, user_loaded, is_solib);
-
-  /* If the objfile uses a mapped symbol file, and we have a psymtab for
-     it, then skip reading any symbols at this time. */
-
-  if ((objfile -> flags & OBJF_MAPPED) && (objfile -> flags & OBJF_SYMS))
-    {
-      /* We mapped in an existing symbol table file that already has had
-	 initial symbol reading performed, so we can skip that part.  Notify
-	 the user that instead of reading the symbols, they have been mapped.
-	 */
-      if (from_tty || info_verbose)
-	{
-	  printf_filtered ("Mapped symbols for %s...", name);
-	  wrap_here ("");
-	  gdb_flush (gdb_stdout);
-	}
-      init_entry_point_info (objfile);
-      find_sym_fns (objfile);
-    }
-  else
-    {
-      /* We either created a new mapped symbol table, mapped an existing
-	 symbol table file which has not had initial symbol reading
-	 performed, or need to read an unmapped symbol table. */
-      if (from_tty || info_verbose)
-	{
-	  if (pre_add_symbol_hook)
-	    pre_add_symbol_hook (name);
-	  else
-	    {
-	      printf_filtered ("Reading symbols from %s...", name);
-	      wrap_here ("");
-	      gdb_flush (gdb_stdout);
-	    }
-	}
-      syms_from_objfile (objfile, addr, mainline, from_tty);
-    }
-
-  /* We now have at least a partial symbol table.  Check to see if the
-     user requested that all symbols be read on initial access via either
-     the gdb startup command line or on a per symbol file basis.  Expand
-     all partial symbol tables for this objfile if so. */
-
-  if (readnow || readnow_symbol_files)
-    {
-      if (from_tty || info_verbose)
-	{
-	  printf_filtered ("expanding to full symbols...");
-	  wrap_here ("");
-	  gdb_flush (gdb_stdout);
-	}
-
-      for (psymtab = objfile -> psymtabs;
-	   psymtab != NULL;
-	   psymtab = psymtab -> next)
-	{
-	  psymtab_to_symtab (psymtab);
-	}
-    }
-
-  if (from_tty || info_verbose)
-    {
-      if (post_add_symbol_hook)
-        post_add_symbol_hook ();
-      else
-        {
-          printf_filtered ("done.\n");
-          gdb_flush (gdb_stdout);
-        }
-    }
-
-  new_symfile_objfile (objfile, mainline, from_tty);
-
-  target_new_objfile (objfile);
-
-  return (objfile);
-}
-
-/* This is the symbol-file command.  Read the file, analyze its
-   symbols, and add a struct symtab to a symtab list.  The syntax of
-   the command is rather bizarre--(1) buildargv implements various
-   quoting conventions which are undocumented and have little or
-   nothing in common with the way things are quoted (or not quoted)
-   elsewhere in GDB, (2) options are used, which are not generally
-   used in GDB (perhaps "set mapped on", "set readnow on" would be
-   better), (3) the order of options matters, which is contrary to GNU
-   conventions (because it is confusing and inconvenient).  */
-
-void
-symbol_file_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  char **argv;
-  char *name = NULL;
-  CORE_ADDR text_relocation = 0;		/* text_relocation */
-  struct cleanup *cleanups;
-  int mapped = 0;
-  int readnow = 0;
-
-  dont_repeat ();
-
-  if (args == NULL)
-    {
-      if ((have_full_symbols () || have_partial_symbols ())
-	  && from_tty
-	  && !query ("Discard symbol table from `%s'? ",
-		     symfile_objfile -> name))
-	error ("Not confirmed.");
-      free_all_objfiles ();
-
-      /* solib descriptors may have handles to objfiles.  Since their
-         storage has just been released, we'd better wipe the solib
-         descriptors as well.
-         */
-#if defined(SOLIB_RESTART)
-      SOLIB_RESTART ();
-#endif
-
-      symfile_objfile = NULL;
-      if (from_tty)
-	{
-	  printf_unfiltered ("No symbol file now.\n");
-	}
-#ifdef HPUXHPPA
-      RESET_HP_UX_GLOBALS ();
-#endif
-    }
-  else
-    {
-      if ((argv = buildargv (args)) == NULL)
-	{
-	  nomem (0);
-	}
-      cleanups = make_cleanup ((make_cleanup_func) freeargv, (char *) argv);
-      while (*argv != NULL)
-	{
-	  if (STREQ (*argv, "-mapped"))
-	    {
-	      mapped = 1;
-	    }
-	  else if (STREQ (*argv, "-readnow"))
-	    {
-	      readnow = 1;
-	    }
-	  else if (**argv == '-')
-	    {
-	      error ("unknown option `%s'", *argv);
-	    }
-	  else
-	    {
-            char *p;
-
-              name = *argv;
-
-              /* this is for rombug remote only, to get the text relocation by
-              using link command */
-              p = strrchr(name, '/');
-              if (p != NULL) p++;
-              else p = name;
-
-              target_link(p, &text_relocation);
-
-              if (text_relocation == (CORE_ADDR)0)
-                return;
-              else if (text_relocation == (CORE_ADDR)-1)
-                {
-                  symbol_file_add (name, from_tty, (CORE_ADDR)0, 
-                                   1, mapped, readnow, 1, 0);
-#ifdef HPUXHPPA
-                  RESET_HP_UX_GLOBALS ();
-#endif
-                }
-              else
-                symbol_file_add (name, from_tty, (CORE_ADDR)text_relocation,
-				 0, mapped, readnow, 1, 0);
-
-	      /* Getting new symbols may change our opinion about what is
-		 frameless.  */
-	      reinit_frame_cache ();
-
-              set_initial_language ();
-	    }
-	  argv++;
-	}
-
-      if (name == NULL)
-	{
-	  error ("no symbol file name was specified");
-	}
-      TUIDO(((TuiOpaqueFuncPtr)tuiDisplayMainFunction));
-      do_cleanups (cleanups);
-    }
-}
-
-/* Set the initial language.
-
-   A better solution would be to record the language in the psymtab when reading
-   partial symbols, and then use it (if known) to set the language.  This would
-   be a win for formats that encode the language in an easily discoverable place,
-   such as DWARF.  For stabs, we can jump through hoops looking for specially
-   named symbols or try to intuit the language from the specific type of stabs
-   we find, but we can't do that until later when we read in full symbols.
-   FIXME.  */
-
-static void
-set_initial_language ()
-{
-  struct partial_symtab *pst;
-  enum language lang = language_unknown;  	
-
-  pst = find_main_psymtab ();
-  if (pst != NULL)
-    {
-      if (pst -> filename != NULL)
-	{
-	  lang = deduce_language_from_filename (pst -> filename);
-        }
-      if (lang == language_unknown)
-	{
-	    /* Make C the default language */
-	    lang = language_c;
-	}
-      set_language (lang);
-      expected_language = current_language;	/* Don't warn the user */
-    }
-}
-
-/* Open file specified by NAME and hand it off to BFD for preliminary
-   analysis.  Result is a newly initialized bfd *, which includes a newly
-   malloc'd` copy of NAME (tilde-expanded and made absolute).
-   In case of trouble, error() is called.  */
-
-bfd *
-symfile_bfd_open (name)
-     char *name;
-{
-  bfd *sym_bfd;
-  int desc;
-  char *absolute_name;
-
-
-
-  name = tilde_expand (name);	/* Returns 1st new malloc'd copy */
-
-  /* Look down path for it, allocate 2nd new malloc'd copy.  */
-  desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name);
-#if defined(__GO32__) || defined(_WIN32)
-  if (desc < 0)
-    {
-      char *exename = alloca (strlen (name) + 5);
-      strcat (strcpy (exename, name), ".exe");
-      desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY,
-                    0, &absolute_name);
-    }
-#endif
-  if (desc < 0)
-    {
-      make_cleanup (free, name);
-      perror_with_name (name);
-    }
-  free (name);			/* Free 1st new malloc'd copy */
-  name = absolute_name;		/* Keep 2nd malloc'd copy in bfd */
-				/* It'll be freed in free_objfile(). */
-
-  sym_bfd = bfd_fdopenr (name, gnutarget, desc);
-  if (!sym_bfd)
-    {
-      close (desc);
-      make_cleanup (free, name);
-      error ("\"%s\": can't open to read symbols: %s.", name,
-	     bfd_errmsg (bfd_get_error ()));
-    }
-  sym_bfd->cacheable = true;
-
-  if (!bfd_check_format (sym_bfd, bfd_object))
-    {
-      /* FIXME: should be checking for errors from bfd_close (for one thing,
-	 on error it does not free all the storage associated with the
-	 bfd).  */
-      bfd_close (sym_bfd);	/* This also closes desc */
-      make_cleanup (free, name);
-      error ("\"%s\": can't read symbols: %s.", name,
-	     bfd_errmsg (bfd_get_error ()));
-    }
-
-#ifdef HPUXHPPA
-  {
-  /********* TARGET SPECIFIC CODE (HACK!) **********
-   *
-   * The following code is HP-specific.  The "right" way of
-   * doing this is unknown, but we bet would involve a target-
-   * specific pre-file-load check using a generic mechanism.
-   */
-  static prevent_recursion = 0;  /* Needed for hack below!  HP-specific */
-  
-  if( prevent_recursion == 0 ) {
-      if( hpread_pxdb_needed (sym_bfd, name)) {
-          /*
-           * This file has not been pre-processed. 
-           * Preprocess now 
-           */
-
-         if (hpread_call_pxdb(name))
-         {
-          /* The
-           * call above has used "system" to pre-process
-           * the on-disk file, so we now need to close
-           * and re-open the file.
-           */
-          bfd_close (sym_bfd);	/* This also closes 'desc', */
-                                /* hence the recursion.     */
-          prevent_recursion++;
-          sym_bfd = symfile_bfd_open( name );
-          prevent_recursion--;
-         }
-      }
-  }
-}
- /*************** END HACK ********************/
-#endif
-
-  return (sym_bfd);
-}
-
-/* Link a new symtab_fns into the global symtab_fns list.  Called on gdb
-   startup by the _initialize routine in each object file format reader,
-   to register information about each format the the reader is prepared
-   to handle. */
-
-void
-add_symtab_fns (sf)
-     struct sym_fns *sf;
-{
-  sf->next = symtab_fns;
-  symtab_fns = sf;
-}
-
-
-/* Initialize to read symbols from the symbol file sym_bfd.  It either
-   returns or calls error().  The result is an initialized struct sym_fns
-   in the objfile structure, that contains cached information about the
-   symbol file.  */
-
-static void
-find_sym_fns (objfile)
-     struct objfile *objfile;
-{
-  struct sym_fns *sf;
-  enum bfd_flavour our_flavour = bfd_get_flavour (objfile -> obfd);
-  char *our_target = bfd_get_target (objfile -> obfd);
-
-  /* Special kludge for RS/6000 and PowerMac.  See xcoffread.c.  */
-  if (STREQ (our_target, "aixcoff-rs6000") ||
-      STREQ (our_target, "xcoff-powermac"))
-    our_flavour = (enum bfd_flavour)-1;
-
-  /* Special kludge for apollo.  See dstread.c.  */
-  if (STREQN (our_target, "apollo", 6))
-    our_flavour = (enum bfd_flavour)-2;
-
-  for (sf = symtab_fns; sf != NULL; sf = sf -> next)
-    {
-      if (our_flavour == sf -> sym_flavour)
-	{
-	  objfile -> sf = sf;
-	  return;
-	}
-    }
-  error ("I'm sorry, Dave, I can't do that.  Symbol format `%s' unknown.",
-	 bfd_get_target (objfile -> obfd));
-}
-
-/* This function runs the load command of our current target.  */
-
-static void
-load_command (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  if (arg == NULL)
-    arg = get_exec_file (1);
-  target_load (arg, from_tty);
-}
-
-/* This version of "load" should be usable for any target.  Currently
-   it is just used for remote targets, not inftarg.c or core files,
-   on the theory that only in that case is it useful.
-
-   Avoiding xmodem and the like seems like a win (a) because we don't have
-   to worry about finding it, and (b) On VMS, fork() is very slow and so
-   we don't want to run a subprocess.  On the other hand, I'm not sure how
-   performance compares.  */
-#define GENERIC_LOAD_CHUNK 256
-#define VALIDATE_DOWNLOAD 0
-void
-generic_load (filename, from_tty)
-    char *filename;
-    int from_tty;
-{
-  struct cleanup *old_cleanups;
-  asection *s;
-  bfd *loadfile_bfd;
-  time_t start_time, end_time;	/* Start and end times of download */
-  unsigned long data_count = 0;	/* Number of bytes transferred to memory */
-  int n; 
-  unsigned long load_offset = 0; 	/* offset to add to vma for each section */
-  char buf[GENERIC_LOAD_CHUNK+8];
-#if VALIDATE_DOWNLOAD  
-  char verify_buffer[GENERIC_LOAD_CHUNK+8] ;
-#endif  
-
-  /* enable user to specify address for downloading as 2nd arg to load */
-  n = sscanf(filename, "%s 0x%lx", buf, &load_offset);
-  if (n > 1 ) 
-    filename = buf;
-  else
-    load_offset = 0;
-
-  loadfile_bfd = bfd_openr (filename, gnutarget);
-  if (loadfile_bfd == NULL)
-    {
-      perror_with_name (filename);
-      return;
-    }
-  /* FIXME: should be checking for errors from bfd_close (for one thing,
-     on error it does not free all the storage associated with the
-     bfd).  */
-  old_cleanups = make_cleanup ((make_cleanup_func) bfd_close, loadfile_bfd);
-
-  if (!bfd_check_format (loadfile_bfd, bfd_object)) 
-    {
-      error ("\"%s\" is not an object file: %s", filename,
-	     bfd_errmsg (bfd_get_error ()));
-    }
-  
-  start_time = time (NULL);
-
-  for (s = loadfile_bfd->sections; s; s = s->next) 
-    {
-      if (s->flags & SEC_LOAD) 
-        {
-          bfd_size_type size;
-
-          size = bfd_get_section_size_before_reloc (s);
-          if (size > 0)
-            {
-              char *buffer;
-              struct cleanup *old_chain;
-              bfd_vma lma;
-              unsigned long l = size ;
-              int err;
-              char *sect;
-              unsigned long sent;
-              unsigned long len;
-	      
-	      l = l > GENERIC_LOAD_CHUNK ? GENERIC_LOAD_CHUNK : l ;
-
-              buffer = xmalloc (size);
-              old_chain = make_cleanup (free, buffer);
-
-              lma = s->lma;
-              lma += load_offset;
-
-              /* Is this really necessary?  I guess it gives the user something
-                 to look at during a long download.  */
-              printf_filtered ("Loading section %s, size 0x%lx lma ",
-                               bfd_get_section_name (loadfile_bfd, s),
-                               (unsigned long) size);
-              print_address_numeric (lma, 1, gdb_stdout);
-              printf_filtered ("\n");
-
-              bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size);
-
-              sect = (char *) bfd_get_section_name (loadfile_bfd, s);
-              sent = 0;
-              do
-                {            
-                  len = (size - sent) < l ? (size - sent) : l;
-                  sent += len;
-                  err = target_write_memory (lma, buffer, len);
-                  if (ui_load_progress_hook)
-                    if (ui_load_progress_hook (sect, sent))
-		      error ("Canceled the download");
-#if VALIDATE_DOWNLOAD
-		  /* Broken memories and broken monitors manifest themselves
-		     here when bring new computers to life.
-		     This doubles already slow downloads.
-		  */
-		  if (err) break ;
-		  {
-		    target_read_memory(lma,verify_buffer,len) ;
-		    if (0 != bcmp(buffer,verify_buffer,len))
-		      error("Download verify failed at %08x",
-			    (unsigned long)lma) ;
-		  }
-
-#endif
-		  data_count += len ;
-                  lma  += len;
-                  buffer += len;
-                } /* od */
-              while (err == 0 && sent < size);
-
-              if (err != 0)
-                error ("Memory access error while loading section %s.", 
-                       bfd_get_section_name (loadfile_bfd, s));
-                
-              do_cleanups (old_chain);
-            }
-        }
-    }
-
-  end_time = time (NULL);
-  {
-    unsigned long entry ;
-    entry = bfd_get_start_address(loadfile_bfd) ;
-    printf_filtered ("Start address 0x%lx , load size %d\n", entry,data_count);
-    /* We were doing this in remote-mips.c, I suspect it is right
-       for other targets too.  */
-    write_pc (entry);
-  }
-
-  /* FIXME: are we supposed to call symbol_file_add or not?  According to
-     a comment from remote-mips.c (where a call to symbol_file_add was
-     commented out), making the call confuses GDB if more than one file is
-     loaded in.  remote-nindy.c had no call to symbol_file_add, but remote-vx.c
-     does.  */
-
-  report_transfer_performance (data_count, start_time, end_time);
-
-  do_cleanups (old_cleanups);
-}
-
-/* Report how fast the transfer went. */
-
-void
-report_transfer_performance (data_count, start_time, end_time)
-unsigned long data_count;
-time_t start_time, end_time;
-{
-  printf_filtered ("Transfer rate: ");
-  if (end_time != start_time)
-    printf_filtered ("%d bits/sec",
-		     (data_count * 8) / (end_time - start_time));
-  else
-    printf_filtered ("%d bits in <1 sec", (data_count * 8));
-  printf_filtered (".\n");
-}
-
-/* This function allows the addition of incrementally linked object files.
-   It does not modify any state in the target, only in the debugger.  */
-
-/* ARGSUSED */
-static void
-add_symbol_file_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  char *name = NULL;
-  CORE_ADDR text_addr;
-  char *arg;
-  int readnow = 0;
-  int mapped = 0;
-  
-  dont_repeat ();
-
-  if (args == NULL)
-    {
-      error ("add-symbol-file takes a file name and an address");
-    }
-
-  /* Make a copy of the string that we can safely write into. */
-
-  args = strdup (args);
-  make_cleanup (free, args);
-
-  /* Pick off any -option args and the file name. */
-
-  while ((*args != '\000') && (name == NULL))
-    {
-      while (isspace (*args)) {args++;}
-      arg = args;
-      while ((*args != '\000') && !isspace (*args)) {args++;}
-      if (*args != '\000')
-	{
-	  *args++ = '\000';
-	}
-      if (*arg != '-')
-	{
-	  name = arg;
-	}
-      else if (STREQ (arg, "-mapped"))
-	{
-	  mapped = 1;
-	}
-      else if (STREQ (arg, "-readnow"))
-	{
-	  readnow = 1;
-	}
-      else
-	{
-	  error ("unknown option `%s'", arg);
-	}
-    }
-
-  /* After picking off any options and the file name, args should be
-     left pointing at the remainder of the command line, which should
-     be the address expression to evaluate. */
-
-  if (name == NULL)
-    {
-      error ("add-symbol-file takes a file name");
-    }
-  name = tilde_expand (name);
-  make_cleanup (free, name);
-
-  if (*args != '\000')
-    {
-      text_addr = parse_and_eval_address (args);
-    }
-  else
-    {
-      target_link(name, &text_addr);
-      if (text_addr == (CORE_ADDR)-1)
-	error("Don't know how to get text start location for this file");
-    }
-
-  /* FIXME-32x64: Assumes text_addr fits in a long.  */
-  if ((from_tty)
-      && (!query ("add symbol table from file \"%s\" at text_addr = %s?\n",
-	          name, local_hex_string ((unsigned long)text_addr))))
-    error ("Not confirmed.");
-
-  symbol_file_add (name, from_tty, text_addr, 0, mapped, readnow,
-                   1,  /* user_loaded */
-                   0); /* We'll guess it's ! is_solib */
-
-  /* Getting new symbols may change our opinion about what is
-     frameless.  */
-  reinit_frame_cache ();
-}
-
-static void
-add_shared_symbol_files_command  (args, from_tty)
-     char *args;
-     int from_tty;
-{
-#ifdef ADD_SHARED_SYMBOL_FILES
-  ADD_SHARED_SYMBOL_FILES (args, from_tty);
-#else
-  error ("This command is not available in this configuration of GDB.");
-#endif  
-}
-
-/* Re-read symbols if a symbol-file has changed.  */
-void
-reread_symbols ()
-{
-  struct objfile *objfile;
-  long new_modtime;
-  int reread_one = 0;
-  struct stat new_statbuf;
-  int res;
-
-  /* With the addition of shared libraries, this should be modified,
-     the load time should be saved in the partial symbol tables, since
-     different tables may come from different source files.  FIXME.
-     This routine should then walk down each partial symbol table
-     and see if the symbol table that it originates from has been changed */
-
-  for (objfile = object_files; objfile; objfile = objfile->next) {
-    if (objfile->obfd) {
-#ifdef IBM6000_TARGET
-     /* If this object is from a shared library, then you should
-        stat on the library name, not member name. */
-
-     if (objfile->obfd->my_archive)
-       res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
-     else
-#endif
-      res = stat (objfile->name, &new_statbuf);
-      if (res != 0) {
-	/* FIXME, should use print_sys_errmsg but it's not filtered. */
-	printf_filtered ("`%s' has disappeared; keeping its symbols.\n",
-			 objfile->name);
-	continue;
-      }
-      new_modtime = new_statbuf.st_mtime;
-      if (new_modtime != objfile->mtime)
-	{
-	  struct cleanup *old_cleanups;
-	  struct section_offsets *offsets;
-	  int num_offsets;
-	  int section_offsets_size;
-	  char *obfd_filename;
-
-	  printf_filtered ("`%s' has changed; re-reading symbols.\n",
-			   objfile->name);
-
-	  /* There are various functions like symbol_file_add,
-	     symfile_bfd_open, syms_from_objfile, etc., which might
-	     appear to do what we want.  But they have various other
-	     effects which we *don't* want.  So we just do stuff
-	     ourselves.  We don't worry about mapped files (for one thing,
-	     any mapped file will be out of date).  */
-
-	  /* If we get an error, blow away this objfile (not sure if
-	     that is the correct response for things like shared
-	     libraries).  */
-	  old_cleanups = make_cleanup ((make_cleanup_func) free_objfile, 
-                                       objfile);
-	  /* We need to do this whenever any symbols go away.  */
-	  make_cleanup ((make_cleanup_func) clear_symtab_users, 0);
-
-	  /* Clean up any state BFD has sitting around.  We don't need
-	     to close the descriptor but BFD lacks a way of closing the
-	     BFD without closing the descriptor.  */
-	  obfd_filename = bfd_get_filename (objfile->obfd);
-	  if (!bfd_close (objfile->obfd))
-	    error ("Can't close BFD for %s: %s", objfile->name,
-		   bfd_errmsg (bfd_get_error ()));
-	  objfile->obfd = bfd_openr (obfd_filename, gnutarget);
-	  if (objfile->obfd == NULL)
-	    error ("Can't open %s to read symbols.", objfile->name);
-	  /* bfd_openr sets cacheable to true, which is what we want.  */
-	  if (!bfd_check_format (objfile->obfd, bfd_object))
-	    error ("Can't read symbols from %s: %s.", objfile->name,
-		   bfd_errmsg (bfd_get_error ()));
-
-	  /* Save the offsets, we will nuke them with the rest of the
-	     psymbol_obstack.  */
-	  num_offsets = objfile->num_sections;
-	  section_offsets_size =
-	    sizeof (struct section_offsets)
-	      + sizeof (objfile->section_offsets->offsets) * num_offsets;
-	  offsets = (struct section_offsets *) alloca (section_offsets_size);
-	  memcpy (offsets, objfile->section_offsets, section_offsets_size);
-
-	  /* Nuke all the state that we will re-read.  Much of the following
-	     code which sets things to NULL really is necessary to tell
-	     other parts of GDB that there is nothing currently there.  */
-
-	  /* FIXME: Do we have to free a whole linked list, or is this
-	     enough?  */
-	  if (objfile->global_psymbols.list)
-	    mfree (objfile->md, objfile->global_psymbols.list);
-	  memset (&objfile -> global_psymbols, 0,
-		  sizeof (objfile -> global_psymbols));
-	  if (objfile->static_psymbols.list)
-	    mfree (objfile->md, objfile->static_psymbols.list);
-	  memset (&objfile -> static_psymbols, 0,
-		  sizeof (objfile -> static_psymbols));
-
-	  /* Free the obstacks for non-reusable objfiles */
-	  obstack_free (&objfile -> psymbol_cache.cache, 0);
-	  memset (&objfile -> psymbol_cache, 0,
-		  sizeof (objfile -> psymbol_cache));
-	  obstack_free (&objfile -> psymbol_obstack, 0);
-	  obstack_free (&objfile -> symbol_obstack, 0);
-	  obstack_free (&objfile -> type_obstack, 0);
-	  objfile->sections = NULL;
-	  objfile->symtabs = NULL;
-	  objfile->psymtabs = NULL;
-	  objfile->free_psymtabs = NULL;
-	  objfile->msymbols = NULL;
-	  objfile->minimal_symbol_count= 0;
-	  objfile->fundamental_types = NULL;
-	  if (objfile -> sf != NULL)
-	    {
-	      (*objfile -> sf -> sym_finish) (objfile);
-	    }
-
-	  /* We never make this a mapped file.  */
-	  objfile -> md = NULL;
-	  /* obstack_specify_allocation also initializes the obstack so
-	     it is empty.  */
-	  obstack_specify_allocation (&objfile -> psymbol_cache.cache, 0, 0,
-				      xmalloc, free);
-	  obstack_specify_allocation (&objfile -> psymbol_obstack, 0, 0,
-				      xmalloc, free);
-	  obstack_specify_allocation (&objfile -> symbol_obstack, 0, 0,
-				      xmalloc, free);
-	  obstack_specify_allocation (&objfile -> type_obstack, 0, 0,
-				      xmalloc, free);
-	  if (build_objfile_section_table (objfile))
-	    {
-	      error ("Can't find the file sections in `%s': %s", 
-		     objfile -> name, bfd_errmsg (bfd_get_error ()));
-	    }
-
-	  /* We use the same section offsets as from last time.  I'm not
-	     sure whether that is always correct for shared libraries.  */
-	  objfile->section_offsets = (struct section_offsets *)
-	    obstack_alloc (&objfile -> psymbol_obstack, section_offsets_size);
-	  memcpy (objfile->section_offsets, offsets, section_offsets_size);
-	  objfile->num_sections = num_offsets;
-
-	  /* What the hell is sym_new_init for, anyway?  The concept of
-	     distinguishing between the main file and additional files
-	     in this way seems rather dubious.  */
-	  if (objfile == symfile_objfile)
-            {
-              (*objfile->sf->sym_new_init) (objfile);
-#ifdef HPUXHPPA
-              RESET_HP_UX_GLOBALS ();
-#endif
-            }
-
-	  (*objfile->sf->sym_init) (objfile);
-	  clear_complaints (1, 1);
-	  /* The "mainline" parameter is a hideous hack; I think leaving it
-	     zero is OK since dbxread.c also does what it needs to do if
-	     objfile->global_psymbols.size is 0.  */
-	  (*objfile->sf->sym_read) (objfile, objfile->section_offsets, 0);
-	  if (!have_partial_symbols () && !have_full_symbols ())
-	    {
-	      wrap_here ("");
-	      printf_filtered ("(no debugging symbols found)\n");
-	      wrap_here ("");
-	    }
-	  objfile -> flags |= OBJF_SYMS;
-
-	  /* We're done reading the symbol file; finish off complaints.  */
-	  clear_complaints (0, 1);
-
-	  /* Getting new symbols may change our opinion about what is
-	     frameless.  */
-
-	  reinit_frame_cache ();
-
-	  /* Discard cleanups as symbol reading was successful.  */
-	  discard_cleanups (old_cleanups);
-
-	  /* If the mtime has changed between the time we set new_modtime
-	     and now, we *want* this to be out of date, so don't call stat
-	     again now.  */
-	  objfile->mtime = new_modtime;
-	  reread_one = 1;
-
-	  /* Call this after reading in a new symbol table to give target
-	     dependant code a crack at the new symbols.  For instance, this
-	     could be used to update the values of target-specific symbols GDB
-	     needs to keep track of (such as _sigtramp, or whatever).  */
-
-	  TARGET_SYMFILE_POSTREAD (objfile);
-	}
-    }
-  }
-
-  if (reread_one)
-    clear_symtab_users ();
-}
-
-
-
-typedef struct {
-  char         *ext;
-  enum language lang;
-} filename_language;
-
-static filename_language * filename_language_table;
-static int fl_table_size, fl_table_next;
-
-static void
-add_filename_language (ext, lang)
-     char         *ext;
-     enum language lang;
-{
-  if (fl_table_next >= fl_table_size)
-    {
-      fl_table_size += 10;
-      filename_language_table = realloc (filename_language_table, 
-					 fl_table_size);
-    }
-
-  filename_language_table[fl_table_next].ext  = strsave (ext);
-  filename_language_table[fl_table_next].lang = lang;
-  fl_table_next++;
-}
-
-static char *ext_args;
-
-static void
-set_ext_lang_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int i;
-  char *cp = ext_args;
-  enum language lang;
-
-  /* First arg is filename extension, starting with '.' */
-  if (*cp != '.')
-    error ("'%s': Filename extension must begin with '.'", ext_args);
-
-  /* Find end of first arg.  */
-  while (*cp && !isspace (*cp))	
-    cp++;
-
-  if (*cp == '\0')
-    error ("'%s': two arguments required -- filename extension and language",
-	   ext_args);
-
-  /* Null-terminate first arg */
-  *cp++ = '\0'; 
-
-  /* Find beginning of second arg, which should be a source language.  */
-  while (*cp && isspace (*cp))
-    cp++;
-
-  if (*cp == '\0')
-    error ("'%s': two arguments required -- filename extension and language",
-	   ext_args);
-
-  /* Lookup the language from among those we know.  */
-  lang = language_enum (cp);
-
-  /* Now lookup the filename extension: do we already know it?  */
-  for (i = 0; i < fl_table_next; i++)
-    if (0 == strcmp (ext_args, filename_language_table[i].ext))
-      break;
-
-  if (i >= fl_table_next)
-    {
-      /* new file extension */
-      add_filename_language (ext_args, lang);
-    }
-  else
-    {
-      /* redefining a previously known filename extension */
-
-      /* if (from_tty) */
-      /*   query ("Really make files of type %s '%s'?", */
-      /*          ext_args, language_str (lang));           */
-
-      free (filename_language_table[i].ext);
-      filename_language_table[i].ext  = strsave (ext_args);
-      filename_language_table[i].lang = lang;
-    }
-}
-
-static void
-info_ext_lang_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  int i;
-
-  printf_filtered ("Filename extensions and the languages they represent:");
-  printf_filtered ("\n\n");
-  for (i = 0; i < fl_table_next; i++)
-    printf_filtered ("\t%s\t- %s\n", 
-		     filename_language_table[i].ext, 
-		     language_str (filename_language_table[i].lang));
-}
-
-static void
-init_filename_language_table ()
-{
-  if (fl_table_size == 0)	/* protect against repetition */
-    {
-      fl_table_size = 20;
-      fl_table_next = 0;
-      filename_language_table = 
-	xmalloc (fl_table_size * sizeof (*filename_language_table));
-      add_filename_language (".c",     language_c);
-      add_filename_language (".C",     language_cplus);
-      add_filename_language (".cc",    language_cplus);
-      add_filename_language (".cp",    language_cplus);
-      add_filename_language (".cpp",   language_cplus);
-      add_filename_language (".cxx",   language_cplus);
-      add_filename_language (".c++",   language_cplus);
-  /* start-sanitize-java */
-      add_filename_language (".java",  language_java);
-      add_filename_language (".class", language_java);
-  /* end-sanitize-java */
-      add_filename_language (".ch",    language_chill);
-      add_filename_language (".c186",  language_chill);
-      add_filename_language (".c286",  language_chill);
-      add_filename_language (".f",     language_fortran);
-      add_filename_language (".F",     language_fortran);
-      add_filename_language (".s",     language_asm);
-      add_filename_language (".S",     language_asm);
-    }
-}
-
-enum language
-deduce_language_from_filename (filename)
-     char *filename;
-{
-  int i;
-  char *cp;
-
-  if (filename != NULL)
-    if ((cp = strrchr (filename, '.')) != NULL)
-      for (i = 0; i < fl_table_next; i++)
-	if (strcmp (cp, filename_language_table[i].ext) == 0)
-	  return filename_language_table[i].lang;
-
-  return language_unknown;
-}
-
-/* allocate_symtab:
-
-   Allocate and partly initialize a new symbol table.  Return a pointer
-   to it.  error() if no space.
-
-   Caller must set these fields:
-	LINETABLE(symtab)
-	symtab->blockvector
-	symtab->dirname
-	symtab->free_code
-	symtab->free_ptr
-	possibly free_named_symtabs (symtab->filename);
- */
-
-struct symtab *
-allocate_symtab (filename, objfile)
-     char *filename;
-     struct objfile *objfile;
-{
-  register struct symtab *symtab;
-
-  symtab = (struct symtab *)
-    obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symtab));
-  memset (symtab, 0, sizeof (*symtab));
-  symtab -> filename = obsavestring (filename, strlen (filename),
-				     &objfile -> symbol_obstack);
-  symtab -> fullname = NULL;
-  symtab -> language = deduce_language_from_filename (filename);
-  symtab -> debugformat = obsavestring ("unknown", 7,
-					&objfile -> symbol_obstack);
-
-  /* Hook it to the objfile it comes from */
-
-  symtab -> objfile = objfile;
-  symtab -> next = objfile -> symtabs;
-  objfile -> symtabs = symtab;
-
-  /* FIXME: This should go away.  It is only defined for the Z8000,
-     and the Z8000 definition of this macro doesn't have anything to
-     do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just
-     here for convenience.  */
-#ifdef INIT_EXTRA_SYMTAB_INFO
-  INIT_EXTRA_SYMTAB_INFO (symtab);
-#endif
-
-  return (symtab);
-}
-
-struct partial_symtab *
-allocate_psymtab (filename, objfile)
-     char *filename;
-     struct objfile *objfile;
-{
-  struct partial_symtab *psymtab;
-
-  if (objfile -> free_psymtabs)
-    {
-      psymtab = objfile -> free_psymtabs;
-      objfile -> free_psymtabs = psymtab -> next;
-    }
-  else
-    psymtab = (struct partial_symtab *)
-      obstack_alloc (&objfile -> psymbol_obstack,
-		     sizeof (struct partial_symtab));
-
-  memset (psymtab, 0, sizeof (struct partial_symtab));
-  psymtab -> filename = obsavestring (filename, strlen (filename),
-				      &objfile -> psymbol_obstack);
-  psymtab -> symtab = NULL;
-
-  /* Prepend it to the psymtab list for the objfile it belongs to.
-     Psymtabs are searched in most recent inserted -> least recent
-     inserted order. */
-
-  psymtab -> objfile = objfile;
-  psymtab -> next = objfile -> psymtabs;
-  objfile -> psymtabs = psymtab;
-#if 0
-  {
-    struct partial_symtab **prev_pst;
-    psymtab -> objfile = objfile;
-    psymtab -> next = NULL;
-    prev_pst = &(objfile -> psymtabs);
-    while ((*prev_pst) != NULL)
-      prev_pst = &((*prev_pst) -> next);
-    (*prev_pst) = psymtab;
-  }  
-#endif
-  
-  return (psymtab);
-}
-
-void
-discard_psymtab (pst)
-     struct partial_symtab *pst;
-{
-  struct partial_symtab **prev_pst;
-
-  /* From dbxread.c:
-     Empty psymtabs happen as a result of header files which don't
-     have any symbols in them.  There can be a lot of them.  But this
-     check is wrong, in that a psymtab with N_SLINE entries but
-     nothing else is not empty, but we don't realize that.  Fixing
-     that without slowing things down might be tricky.  */
-
-  /* First, snip it out of the psymtab chain */
-
-  prev_pst = &(pst->objfile->psymtabs);
-  while ((*prev_pst) != pst)
-    prev_pst = &((*prev_pst)->next);
-  (*prev_pst) = pst->next;
-
-  /* Next, put it on a free list for recycling */
-
-  pst->next = pst->objfile->free_psymtabs;
-  pst->objfile->free_psymtabs = pst;
-}
-
-
-/* Reset all data structures in gdb which may contain references to symbol
-   table data.  */
-
-void
-clear_symtab_users ()
-{
-  /* Someday, we should do better than this, by only blowing away
-     the things that really need to be blown.  */
-  clear_value_history ();
-  clear_displays ();
-  clear_internalvars ();
-  breakpoint_re_set ();
-  set_default_breakpoint (0, 0, 0, 0);
-  current_source_symtab = 0;
-  current_source_line = 0;
-  clear_pc_function_cache ();
-  target_new_objfile (NULL);
-}
-
-/* clear_symtab_users_once:
-
-   This function is run after symbol reading, or from a cleanup.
-   If an old symbol table was obsoleted, the old symbol table
-   has been blown away, but the other GDB data structures that may 
-   reference it have not yet been cleared or re-directed.  (The old
-   symtab was zapped, and the cleanup queued, in free_named_symtab()
-   below.)
-
-   This function can be queued N times as a cleanup, or called
-   directly; it will do all the work the first time, and then will be a
-   no-op until the next time it is queued.  This works by bumping a
-   counter at queueing time.  Much later when the cleanup is run, or at
-   the end of symbol processing (in case the cleanup is discarded), if
-   the queued count is greater than the "done-count", we do the work
-   and set the done-count to the queued count.  If the queued count is
-   less than or equal to the done-count, we just ignore the call.  This
-   is needed because reading a single .o file will often replace many
-   symtabs (one per .h file, for example), and we don't want to reset
-   the breakpoints N times in the user's face.
-
-   The reason we both queue a cleanup, and call it directly after symbol
-   reading, is because the cleanup protects us in case of errors, but is
-   discarded if symbol reading is successful.  */
-
-#if 0
-/* FIXME:  As free_named_symtabs is currently a big noop this function
-   is no longer needed.  */
-static void
-clear_symtab_users_once PARAMS ((void));
-
-static int clear_symtab_users_queued;
-static int clear_symtab_users_done;
-
-static void
-clear_symtab_users_once ()
-{
-  /* Enforce once-per-`do_cleanups'-semantics */
-  if (clear_symtab_users_queued <= clear_symtab_users_done)
-    return;
-  clear_symtab_users_done = clear_symtab_users_queued;
-
-  clear_symtab_users ();
-}
-#endif
-
-/* Delete the specified psymtab, and any others that reference it.  */
-
-static void
-cashier_psymtab (pst)
-     struct partial_symtab *pst;
-{
-  struct partial_symtab *ps, *pprev = NULL;
-  int i;
-
-  /* Find its previous psymtab in the chain */
-  for (ps = pst->objfile->psymtabs; ps; ps = ps->next) {
-    if (ps == pst)
-      break;
-    pprev = ps;
-  }
-
-  if (ps) {
-    /* Unhook it from the chain.  */
-    if (ps == pst->objfile->psymtabs)
-      pst->objfile->psymtabs = ps->next;
-    else
-      pprev->next = ps->next;
-
-    /* FIXME, we can't conveniently deallocate the entries in the
-       partial_symbol lists (global_psymbols/static_psymbols) that
-       this psymtab points to.  These just take up space until all
-       the psymtabs are reclaimed.  Ditto the dependencies list and
-       filename, which are all in the psymbol_obstack.  */
-
-    /* We need to cashier any psymtab that has this one as a dependency... */
-again:
-    for (ps = pst->objfile->psymtabs; ps; ps = ps->next) {
-      for (i = 0; i < ps->number_of_dependencies; i++) {
-	if (ps->dependencies[i] == pst) {
-	  cashier_psymtab (ps);
-	  goto again;		/* Must restart, chain has been munged. */
-	}
-      }
-    }
-  }
-}
-
-/* If a symtab or psymtab for filename NAME is found, free it along
-   with any dependent breakpoints, displays, etc.
-   Used when loading new versions of object modules with the "add-file"
-   command.  This is only called on the top-level symtab or psymtab's name;
-   it is not called for subsidiary files such as .h files.
-
-   Return value is 1 if we blew away the environment, 0 if not.
-   FIXME.  The return valu appears to never be used.
-
-   FIXME.  I think this is not the best way to do this.  We should
-   work on being gentler to the environment while still cleaning up
-   all stray pointers into the freed symtab.  */
-
-int
-free_named_symtabs (name)
-     char *name;
-{
-#if 0
-  /* FIXME:  With the new method of each objfile having it's own
-     psymtab list, this function needs serious rethinking.  In particular,
-     why was it ever necessary to toss psymtabs with specific compilation
-     unit filenames, as opposed to all psymtabs from a particular symbol
-     file?  -- fnf
-     Well, the answer is that some systems permit reloading of particular
-     compilation units.  We want to blow away any old info about these
-     compilation units, regardless of which objfiles they arrived in. --gnu.  */
-
-  register struct symtab *s;
-  register struct symtab *prev;
-  register struct partial_symtab *ps;
-  struct blockvector *bv;
-  int blewit = 0;
-
-  /* We only wack things if the symbol-reload switch is set.  */
-  if (!symbol_reloading)
-    return 0;
-
-  /* Some symbol formats have trouble providing file names... */
-  if (name == 0 || *name == '\0')
-    return 0;
-
-  /* Look for a psymtab with the specified name.  */
-
-again2:
-  for (ps = partial_symtab_list; ps; ps = ps->next) {
-    if (STREQ (name, ps->filename)) {
-      cashier_psymtab (ps);	/* Blow it away...and its little dog, too.  */
-      goto again2;		/* Must restart, chain has been munged */
-    }
-  }
-
-  /* Look for a symtab with the specified name.  */
-
-  for (s = symtab_list; s; s = s->next)
-    {
-      if (STREQ (name, s->filename))
-	break;
-      prev = s;
-    }
-
-  if (s)
-    {
-      if (s == symtab_list)
-	symtab_list = s->next;
-      else
-	prev->next = s->next;
-
-      /* For now, queue a delete for all breakpoints, displays, etc., whether
-	 or not they depend on the symtab being freed.  This should be
-	 changed so that only those data structures affected are deleted.  */
-
-      /* But don't delete anything if the symtab is empty.
-	 This test is necessary due to a bug in "dbxread.c" that
-	 causes empty symtabs to be created for N_SO symbols that
-	 contain the pathname of the object file.  (This problem
-	 has been fixed in GDB 3.9x).  */
-
-      bv = BLOCKVECTOR (s);
-      if (BLOCKVECTOR_NBLOCKS (bv) > 2
-	  || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK))
-	  || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)))
-	{
-	  complain (&oldsyms_complaint, name);
-
-	  clear_symtab_users_queued++;
-	  make_cleanup (clear_symtab_users_once, 0);
-	  blewit = 1;
-	} else {
-	  complain (&empty_symtab_complaint, name);
-	}
-
-      free_symtab (s);
-    }
-  else
-    {
-      /* It is still possible that some breakpoints will be affected
-	 even though no symtab was found, since the file might have
-	 been compiled without debugging, and hence not be associated
-	 with a symtab.  In order to handle this correctly, we would need
-	 to keep a list of text address ranges for undebuggable files.
-	 For now, we do nothing, since this is a fairly obscure case.  */
-      ;
-    }
-
-  /* FIXME, what about the minimal symbol table? */
-  return blewit;
-#else
-  return (0);
-#endif
-}
-
-/* Allocate and partially fill a partial symtab.  It will be
-   completely filled at the end of the symbol list.
-
-   SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
-   is the address relative to which its symbols are (incremental) or 0
-   (normal). */
-
-
-struct partial_symtab *
-start_psymtab_common (objfile, section_offsets,
-		      filename, textlow, global_syms, static_syms)
-     struct objfile *objfile;
-     struct section_offsets *section_offsets;
-     char *filename;
-     CORE_ADDR textlow;
-     struct partial_symbol **global_syms;
-     struct partial_symbol **static_syms;
-{
-  struct partial_symtab *psymtab;
-
-  psymtab = allocate_psymtab (filename, objfile);
-  psymtab -> section_offsets = section_offsets;
-  psymtab -> textlow = textlow;
-  psymtab -> texthigh = psymtab -> textlow;  /* default */
-  psymtab -> globals_offset = global_syms - objfile -> global_psymbols.list;
-  psymtab -> statics_offset = static_syms - objfile -> static_psymbols.list;
-  return (psymtab);
-}
-
-/* Add a symbol with a long value to a psymtab.
-   Since one arg is a struct, we pass in a ptr and deref it (sigh).  */
-
-void
-add_psymbol_to_list (name, namelength, namespace, class, list, val, coreaddr,
-		     language, objfile)
-     char *name;
-     int namelength;
-     namespace_enum namespace;
-     enum address_class class;
-     struct psymbol_allocation_list *list;
-     long val;					/* Value as a long */
-     CORE_ADDR coreaddr;			/* Value as a CORE_ADDR */
-     enum language language;
-     struct objfile *objfile;
-{
-  register struct partial_symbol *psym;
-  char *buf = alloca (namelength + 1);
-  /* psymbol is static so that there will be no uninitialized gaps in the
-     structure which might contain random data, causing cache misses in
-     bcache. */
-  static struct partial_symbol psymbol;
-
-  /* Create local copy of the partial symbol */
-  memcpy (buf, name, namelength);
-  buf[namelength] = '\0';
-  SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache);
-  /* val and coreaddr are mutually exclusive, one of them *will* be zero */
-  if (val != 0)
-    {
-      SYMBOL_VALUE (&psymbol) = val;
-    }
-  else
-    {
-      SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
-    }
-  SYMBOL_SECTION (&psymbol) = 0;
-  SYMBOL_LANGUAGE (&psymbol) = language;
-  PSYMBOL_NAMESPACE (&psymbol) = namespace;
-  PSYMBOL_CLASS (&psymbol) = class;
-  SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language);
-
-  /* Stash the partial symbol away in the cache */
-  psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache);
-
-  /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
-  if (list->next >= list->list + list->size)
-    {
-      extend_psymbol_list (list, objfile);
-    }
-  *list->next++ = psym;
-  OBJSTAT (objfile, n_psyms++);
-}
-
-/* Add a symbol with a long value to a psymtab. This differs from
- * add_psymbol_to_list above in taking both a mangled and a demangled
- * name. */
-
-void
-add_psymbol_with_dem_name_to_list (name, namelength, dem_name, dem_namelength,
-                                   namespace, class, list, val, coreaddr, language, objfile)
-     char *name;
-     int namelength;
-     char *dem_name;
-     int dem_namelength;
-     namespace_enum namespace;
-     enum address_class class;
-     struct psymbol_allocation_list *list;
-     long val;					/* Value as a long */
-     CORE_ADDR coreaddr;			/* Value as a CORE_ADDR */
-     enum language language;
-     struct objfile *objfile;
-{
-  register struct partial_symbol *psym;
-  char *buf = alloca (namelength + 1);
-  /* psymbol is static so that there will be no uninitialized gaps in the
-     structure which might contain random data, causing cache misses in
-     bcache. */
-  static struct partial_symbol psymbol;
-
-  /* Create local copy of the partial symbol */
-
-  memcpy (buf, name, namelength);
-  buf[namelength] = '\0';
-  SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, &objfile->psymbol_cache);
-
-  buf = alloca (dem_namelength + 1);
-  memcpy (buf, dem_name, dem_namelength);
-  buf[dem_namelength] = '\0';
-  
-  switch (language)
-    {
-      case language_c:
-      case language_cplus:
-        SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) =
-          bcache (buf, dem_namelength + 1, &objfile->psymbol_cache);
-        break;
-      case language_chill:
-        SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = 
-          bcache (buf, dem_namelength + 1, &objfile->psymbol_cache);
-        
-      /* FIXME What should be done for the default case? Ignoring for now. */
-    }
-
-  /* val and coreaddr are mutually exclusive, one of them *will* be zero */
-  if (val != 0)
-    {
-      SYMBOL_VALUE (&psymbol) = val;
-    }
-  else
-    {
-      SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
-    }
-  SYMBOL_SECTION (&psymbol) = 0;
-  SYMBOL_LANGUAGE (&psymbol) = language;
-  PSYMBOL_NAMESPACE (&psymbol) = namespace;
-  PSYMBOL_CLASS (&psymbol) = class;
-  SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language);
-
-  /* Stash the partial symbol away in the cache */
-  psym = bcache (&psymbol, sizeof (struct partial_symbol), &objfile->psymbol_cache);
-
-  /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
-  if (list->next >= list->list + list->size)
-    {
-      extend_psymbol_list (list, objfile);
-    }
-  *list->next++ = psym;
-  OBJSTAT (objfile, n_psyms++);
-}
-
-/* Initialize storage for partial symbols.  */
-
-void
-init_psymbol_list (objfile, total_symbols)
-     struct objfile *objfile;
-     int total_symbols;
-{
-  /* Free any previously allocated psymbol lists.  */
-  
-  if (objfile -> global_psymbols.list)
-    {
-      mfree (objfile -> md, (PTR)objfile -> global_psymbols.list);
-    }
-  if (objfile -> static_psymbols.list)
-    {
-      mfree (objfile -> md, (PTR)objfile -> static_psymbols.list);
-    }
-  
-  /* Current best guess is that approximately a twentieth
-     of the total symbols (in a debugging file) are global or static
-     oriented symbols */
-  
-  objfile -> global_psymbols.size = total_symbols / 10;
-  objfile -> static_psymbols.size = total_symbols / 10;
-
-  if (objfile -> global_psymbols.size > 0)
-    {
-      objfile -> global_psymbols.next =
-	objfile -> global_psymbols.list = (struct partial_symbol **)
-	xmmalloc (objfile -> md, (objfile -> global_psymbols.size
-				  * sizeof (struct partial_symbol *)));
-    }
-  if (objfile -> static_psymbols.size > 0)
-    {
-      objfile -> static_psymbols.next =
-	objfile -> static_psymbols.list = (struct partial_symbol **)
-	xmmalloc (objfile -> md, (objfile -> static_psymbols.size
-				  * sizeof (struct partial_symbol *)));
-    }
-}
-
-/* OVERLAYS:
-   The following code implements an abstraction for debugging overlay sections.
-
-   The target model is as follows:
-   1) The gnu linker will permit multiple sections to be mapped into the
-      same VMA, each with its own unique LMA (or load address).
-   2) It is assumed that some runtime mechanism exists for mapping the
-      sections, one by one, from the load address into the VMA address.
-   3) This code provides a mechanism for gdb to keep track of which 
-      sections should be considered to be mapped from the VMA to the LMA.
-      This information is used for symbol lookup, and memory read/write.
-      For instance, if a section has been mapped then its contents 
-      should be read from the VMA, otherwise from the LMA.
-
-   Two levels of debugger support for overlays are available.  One is
-   "manual", in which the debugger relies on the user to tell it which
-   overlays are currently mapped.  This level of support is
-   implemented entirely in the core debugger, and the information about
-   whether a section is mapped is kept in the objfile->obj_section table.
-
-   The second level of support is "automatic", and is only available if
-   the target-specific code provides functionality to read the target's
-   overlay mapping table, and translate its contents for the debugger
-   (by updating the mapped state information in the obj_section tables).
-
-   The interface is as follows:
-     User commands:
-       overlay map <name>	-- tell gdb to consider this section mapped
-       overlay unmap <name>	-- tell gdb to consider this section unmapped
-       overlay list		-- list the sections that GDB thinks are mapped
-       overlay read-target	-- get the target's state of what's mapped
-       overlay off/manual/auto -- set overlay debugging state
-     Functional interface:
-       find_pc_mapped_section(pc):    if the pc is in the range of a mapped
-				      section, return that section.
-       find_pc_overlay(pc):	      find any overlay section that contains 
-				      the pc, either in its VMA or its LMA
-       overlay_is_mapped(sect):       true if overlay is marked as mapped
-       section_is_overlay(sect):      true if section's VMA != LMA
-       pc_in_mapped_range(pc,sec):    true if pc belongs to section's VMA
-       pc_in_unmapped_range(...):     true if pc belongs to section's LMA
-       overlay_mapped_address(...):   map an address from section's LMA to VMA
-       overlay_unmapped_address(...): map an address from section's VMA to LMA
-       symbol_overlayed_address(...): Return a "current" address for symbol:
-				      either in VMA or LMA depending on whether
-				      the symbol's section is currently mapped
- */
-
-/* Overlay debugging state: */
-
-int overlay_debugging = 0;	/* 0 == off, 1 == manual, -1 == auto */
-int overlay_cache_invalid = 0;	/* True if need to refresh mapped state */
-
-/* Target vector for refreshing overlay mapped state */
-static void simple_overlay_update PARAMS ((struct obj_section *));
-void (*target_overlay_update) PARAMS ((struct obj_section *)) 
-     = simple_overlay_update;
-
-/* Function: section_is_overlay (SECTION)
-   Returns true if SECTION has VMA not equal to LMA, ie. 
-   SECTION is loaded at an address different from where it will "run".  */
-
-int
-section_is_overlay (section)
-     asection *section;
-{
-  if (overlay_debugging)
-    if (section && section->lma != 0 &&
-	section->vma != section->lma)
-      return 1;
-
-  return 0;
-}
-
-/* Function: overlay_invalidate_all (void)
-   Invalidate the mapped state of all overlay sections (mark it as stale).  */
-
-static void
-overlay_invalidate_all ()
-{
-  struct objfile     *objfile;
-  struct obj_section *sect;
-
-  ALL_OBJSECTIONS (objfile, sect)
-    if (section_is_overlay (sect->the_bfd_section))
-      sect->ovly_mapped = -1;
-}
-
-/* Function: overlay_is_mapped (SECTION)
-   Returns true if section is an overlay, and is currently mapped. 
-   Private: public access is thru function section_is_mapped.
-
-   Access to the ovly_mapped flag is restricted to this function, so
-   that we can do automatic update.  If the global flag
-   OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
-   overlay_invalidate_all.  If the mapped state of the particular
-   section is stale, then call TARGET_OVERLAY_UPDATE to refresh it.  */
-
-static int 
-overlay_is_mapped (osect)
-     struct obj_section *osect;
-{
-  if (osect == 0 || !section_is_overlay (osect->the_bfd_section))
-    return 0;
-
-  switch (overlay_debugging) 
-    {
-    default:
-    case 0:	return 0;	/* overlay debugging off */
-    case -1:			/* overlay debugging automatic */
-      /* Unles there is a target_overlay_update function, 
-	 there's really nothing useful to do here (can't really go auto)  */
-      if (target_overlay_update)
-	{
-	  if (overlay_cache_invalid)
-	    {
-	      overlay_invalidate_all ();
-	      overlay_cache_invalid = 0;
-	    }
-	  if (osect->ovly_mapped == -1)
-	    (*target_overlay_update) (osect);
-	}
-      /* fall thru to manual case */
-    case 1:			/* overlay debugging manual */
-      return osect->ovly_mapped == 1;
-    }
-}
-
-/* Function: section_is_mapped
-   Returns true if section is an overlay, and is currently mapped.  */
-
-int
-section_is_mapped (section)
-     asection *section;
-{
-  struct objfile     *objfile;
-  struct obj_section *osect;
-
-  if (overlay_debugging)
-    if (section && section_is_overlay (section))
-      ALL_OBJSECTIONS (objfile, osect)
-	if (osect->the_bfd_section == section)
-	  return overlay_is_mapped (osect);
-
-  return 0;
-}
-
-/* Function: pc_in_unmapped_range
-   If PC falls into the lma range of SECTION, return true, else false.  */
-
-CORE_ADDR
-pc_in_unmapped_range (pc, section)
-     CORE_ADDR pc;
-     asection *section;
-{
-  int size;
-
-  if (overlay_debugging)
-    if (section && section_is_overlay (section))
-      {
-	size = bfd_get_section_size_before_reloc (section);
-	if (section->lma <= pc && pc < section->lma + size)
-	  return 1;
-      }
-  return 0;
-}
-
-/* Function: pc_in_mapped_range
-   If PC falls into the vma range of SECTION, return true, else false.  */
-
-CORE_ADDR
-pc_in_mapped_range (pc, section)
-     CORE_ADDR pc;
-     asection *section;
-{
-  int size;
-
-  if (overlay_debugging)
-    if (section && section_is_overlay (section))
-      {
-	size = bfd_get_section_size_before_reloc (section);
-	if (section->vma <= pc && pc < section->vma + size)
-	  return 1;
-      }
-  return 0;
-}
-
-/* Function: overlay_unmapped_address (PC, SECTION)
-   Returns the address corresponding to PC in the unmapped (load) range.
-   May be the same as PC.  */
-
-CORE_ADDR
-overlay_unmapped_address (pc, section)
-     CORE_ADDR pc;
-     asection *section;
-{
-  if (overlay_debugging)
-    if (section && section_is_overlay (section) &&
-	pc_in_mapped_range (pc, section))
-      return pc + section->lma - section->vma;
-
-  return pc;
-}
-
-/* Function: overlay_mapped_address (PC, SECTION)
-   Returns the address corresponding to PC in the mapped (runtime) range.
-   May be the same as PC.  */
-
-CORE_ADDR
-overlay_mapped_address (pc, section)
-     CORE_ADDR pc;
-     asection *section;
-{
-  if (overlay_debugging)
-    if (section && section_is_overlay (section) &&
-	pc_in_unmapped_range (pc, section))
-      return pc + section->vma - section->lma;
-
-  return pc;
-}
-
-
-/* Function: symbol_overlayed_address 
-   Return one of two addresses (relative to the VMA or to the LMA),
-   depending on whether the section is mapped or not.  */
-
-CORE_ADDR 
-symbol_overlayed_address (address, section)
-     CORE_ADDR address;
-     asection *section;
-{
-  if (overlay_debugging)
-    {
-      /* If the symbol has no section, just return its regular address. */
-      if (section == 0)
-	return address;
-      /* If the symbol's section is not an overlay, just return its address */
-      if (!section_is_overlay (section))
-	return address;
-      /* If the symbol's section is mapped, just return its address */
-      if (section_is_mapped (section))
-	return address;
-      /*
-       * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
-       * then return its LOADED address rather than its vma address!!
-       */
-      return overlay_unmapped_address (address, section);
-    }
-  return address;
-}
-
-/* Function: find_pc_overlay (PC) 
-   Return the best-match overlay section for PC:
-   If PC matches a mapped overlay section's VMA, return that section.
-   Else if PC matches an unmapped section's VMA, return that section.
-   Else if PC matches an unmapped section's LMA, return that section.  */
-
-asection *
-find_pc_overlay (pc)
-     CORE_ADDR pc;
-{
-  struct objfile     *objfile;
-  struct obj_section *osect, *best_match = NULL;
-
-  if (overlay_debugging)
-    ALL_OBJSECTIONS (objfile, osect)
-      if (section_is_overlay (osect->the_bfd_section))
-	{
-	  if (pc_in_mapped_range (pc, osect->the_bfd_section))
-	    {
-	      if (overlay_is_mapped (osect))
-		return osect->the_bfd_section;
-	      else
-		best_match = osect;
-	    }
-	  else if (pc_in_unmapped_range (pc, osect->the_bfd_section))
-	    best_match = osect;
-	}
-  return best_match ? best_match->the_bfd_section : NULL;
-}
-
-/* Function: find_pc_mapped_section (PC)
-   If PC falls into the VMA address range of an overlay section that is 
-   currently marked as MAPPED, return that section.  Else return NULL.  */
-
-asection *
-find_pc_mapped_section (pc)
-     CORE_ADDR pc;
-{
-  struct objfile     *objfile;
-  struct obj_section *osect;
-
-  if (overlay_debugging)
-    ALL_OBJSECTIONS (objfile, osect)
-      if (pc_in_mapped_range (pc, osect->the_bfd_section) &&
-	  overlay_is_mapped (osect))
-	return osect->the_bfd_section;
-
-  return NULL;
-}
-
-/* Function: list_overlays_command
-   Print a list of mapped sections and their PC ranges */
-
-void
-list_overlays_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int                nmapped = 0;
-  struct objfile     *objfile;
-  struct obj_section *osect;
-
-  if (overlay_debugging)
-    ALL_OBJSECTIONS (objfile, osect)
-      if (overlay_is_mapped (osect))
-	{
-	  const char *name;
-	  bfd_vma     lma, vma;
-	  int         size;
-
-	  vma  = bfd_section_vma (objfile->obfd, osect->the_bfd_section);
-	  lma  = bfd_section_lma (objfile->obfd, osect->the_bfd_section);
-	  size = bfd_get_section_size_before_reloc (osect->the_bfd_section);
-	  name = bfd_section_name (objfile->obfd, osect->the_bfd_section);
-
-	  printf_filtered ("Section %s, loaded at ", name);
-	  print_address_numeric (lma, 1, stdout);
-	  puts_filtered (" - ");
-	  print_address_numeric (lma + size, 1, stdout);
-	  printf_filtered (", mapped at ");
-	  print_address_numeric (vma, 1, stdout);
-	  puts_filtered (" - ");
-	  print_address_numeric (vma + size, 1, stdout);
-	  puts_filtered ("\n");
-
-	  nmapped ++;
-	}
-  if (nmapped == 0)
-    printf_filtered ("No sections are mapped.\n");
-}
-
-/* Function: map_overlay_command
-   Mark the named section as mapped (ie. residing at its VMA address).  */
-
-void
-map_overlay_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  struct objfile     *objfile, *objfile2;
-  struct obj_section *sec,     *sec2;
-  asection           *bfdsec;
-
-  if (!overlay_debugging)
-    error ("Overlay debugging not enabled.  Use the 'OVERLAY ON' command.");
-
-  if (args == 0 || *args == 0)
-    error ("Argument required: name of an overlay section");
-
-  /* First, find a section matching the user supplied argument */
-  ALL_OBJSECTIONS (objfile, sec)
-    if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args))
-      { 
-	/* Now, check to see if the section is an overlay. */
-	bfdsec = sec->the_bfd_section;
-	if (!section_is_overlay (bfdsec))
-	  continue;		/* not an overlay section */
-
-	/* Mark the overlay as "mapped" */
-	sec->ovly_mapped = 1;
-
-	/* Next, make a pass and unmap any sections that are
-	   overlapped by this new section: */
-	ALL_OBJSECTIONS (objfile2, sec2)
-	  if (sec2->ovly_mapped &&
-	      sec != sec2 &&
-	      sec->the_bfd_section != sec2->the_bfd_section &&
-	      (pc_in_mapped_range (sec2->addr,    sec->the_bfd_section) ||
-	       pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section)))
-	    {
-	      if (info_verbose)
-		printf_filtered ("Note: section %s unmapped by overlap\n",
-				 bfd_section_name (objfile->obfd, 
-						   sec2->the_bfd_section));
-	      sec2->ovly_mapped = 0;	/* sec2 overlaps sec: unmap sec2 */
-	    }
-	return;
-      }
-  error ("No overlay section called %s", args);
-}
-
-/* Function: unmap_overlay_command
-   Mark the overlay section as unmapped 
-   (ie. resident in its LMA address range, rather than the VMA range).  */
-
-void
-unmap_overlay_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  struct objfile     *objfile;
-  struct obj_section *sec;
-
-  if (!overlay_debugging)
-    error ("Overlay debugging not enabled.  Use the 'OVERLAY ON' command.");
-
-  if (args == 0 || *args == 0)
-    error ("Argument required: name of an overlay section");
-
-  /* First, find a section matching the user supplied argument */
-  ALL_OBJSECTIONS (objfile, sec)
-    if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args))
-      {
-	if (!sec->ovly_mapped)
-	  error ("Section %s is not mapped", args);
-	sec->ovly_mapped = 0;
-	return;
-      }
-  error ("No overlay section called %s", args);
-}
-
-/* Function: overlay_auto_command
-   A utility command to turn on overlay debugging.
-   Possibly this should be done via a set/show command. */
-
-static void
-overlay_auto_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  overlay_debugging = -1;
-  if (info_verbose)
-    printf_filtered ("Automatic overlay debugging enabled.");
-}
-
-/* Function: overlay_manual_command
-   A utility command to turn on overlay debugging.
-   Possibly this should be done via a set/show command. */
-
-static void
-overlay_manual_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  overlay_debugging = 1;
-  if (info_verbose)
-    printf_filtered ("Overlay debugging enabled.");
-}
-
-/* Function: overlay_off_command
-   A utility command to turn on overlay debugging.
-   Possibly this should be done via a set/show command. */
-
-static void
-overlay_off_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  overlay_debugging = 0; 
-  if (info_verbose)
-    printf_filtered ("Overlay debugging disabled.");
-}
-
-static void
-overlay_load_command (args, from_tty)
-     char *args;
-     int   from_tty;
-{
-  if (target_overlay_update)
-    (*target_overlay_update) (NULL);
-  else
-    error ("This target does not know how to read its overlay state.");
-}
-
-/* Function: overlay_command
-   A place-holder for a mis-typed command */
-
-/* Command list chain containing all defined "overlay" subcommands. */
-struct cmd_list_element *overlaylist;
-
-static void
-overlay_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  printf_unfiltered 
-    ("\"overlay\" must be followed by the name of an overlay command.\n");
-  help_list (overlaylist, "overlay ", -1, gdb_stdout);
-}
-
-
-/* Target Overlays for the "Simplest" overlay manager:
-
-   This is GDB's default target overlay layer.  It works with the 
-   minimal overlay manager supplied as an example by Cygnus.  The 
-   entry point is via a function pointer "target_overlay_update", 
-   so targets that use a different runtime overlay manager can 
-   substitute their own overlay_update function and take over the
-   function pointer.
-
-   The overlay_update function pokes around in the target's data structures
-   to see what overlays are mapped, and updates GDB's overlay mapping with
-   this information.
-
-   In this simple implementation, the target data structures are as follows:
-   	unsigned _novlys;		/# number of overlay sections #/
-	unsigned _ovly_table[_novlys][4] = {
-	  {VMA, SIZE, LMA, MAPPED},	/# one entry per overlay section #/
-	  {..., ...,  ..., ...},
-	}
-	unsigned _novly_regions;	/# number of overlay regions #/
-	unsigned _ovly_region_table[_novly_regions][3] = {
-	  {VMA, SIZE, MAPPED_TO_LMA},	/# one entry per overlay region #/
-	  {..., ...,  ...},
-	}
-   These functions will attempt to update GDB's mappedness state in the
-   symbol section table, based on the target's mappedness state.
-
-   To do this, we keep a cached copy of the target's _ovly_table, and
-   attempt to detect when the cached copy is invalidated.  The main
-   entry point is "simple_overlay_update(SECT), which looks up SECT in
-   the cached table and re-reads only the entry for that section from
-   the target (whenever possible).
- */
-
-/* Cached, dynamically allocated copies of the target data structures: */
-static unsigned  (*cache_ovly_table)[4] = 0;
-#if 0
-static unsigned  (*cache_ovly_region_table)[3] = 0;
-#endif
-static unsigned  cache_novlys = 0;
-#if 0
-static unsigned  cache_novly_regions = 0;
-#endif
-static CORE_ADDR cache_ovly_table_base = 0;
-#if 0
-static CORE_ADDR cache_ovly_region_table_base = 0;
-#endif
-enum   ovly_index { VMA, SIZE, LMA, MAPPED};
-#define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT)
-
-/* Throw away the cached copy of _ovly_table */
-static void
-simple_free_overlay_table ()
-{
-  if (cache_ovly_table)
-    free(cache_ovly_table);
-  cache_novlys     = 0;
-  cache_ovly_table = NULL;
-  cache_ovly_table_base = 0;
-}
-
-#if 0
-/* Throw away the cached copy of _ovly_region_table */
-static void
-simple_free_overlay_region_table ()
-{
-  if (cache_ovly_region_table)
-    free(cache_ovly_region_table);
-  cache_novly_regions     = 0;
-  cache_ovly_region_table = NULL;
-  cache_ovly_region_table_base = 0;
-}
-#endif
-
-/* Read an array of ints from the target into a local buffer.
-   Convert to host order.  int LEN is number of ints  */
-static void
-read_target_long_array (memaddr, myaddr, len)
-     CORE_ADDR     memaddr;
-     unsigned int *myaddr;
-     int           len;
-{
-  char *buf = alloca (len * TARGET_LONG_BYTES);
-  int           i;
-
-  read_memory (memaddr, buf, len * TARGET_LONG_BYTES);
-  for (i = 0; i < len; i++)
-    myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, 
-					  TARGET_LONG_BYTES);
-}
-
-/* Find and grab a copy of the target _ovly_table
-   (and _novlys, which is needed for the table's size) */
-static int 
-simple_read_overlay_table ()
-{
-  struct minimal_symbol *msym;
-
-  simple_free_overlay_table ();
-  msym = lookup_minimal_symbol ("_novlys", 0, 0);
-  if (msym != NULL)
-    cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4);
-  else 
-    return 0;	/* failure */
-  cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof(*cache_ovly_table));
-  if (cache_ovly_table != NULL)
-    {
-      msym = lookup_minimal_symbol ("_ovly_table", 0, 0);
-      if (msym != NULL)
-	{
-	  cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym);
-	  read_target_long_array (cache_ovly_table_base, 
-				  (int *) cache_ovly_table, 
-				  cache_novlys * 4);
-	}
-      else 
-	return 0;	/* failure */
-    }
-  else 
-    return 0;	/* failure */
-  return 1;	/* SUCCESS */
-}
-
-#if 0
-/* Find and grab a copy of the target _ovly_region_table
-   (and _novly_regions, which is needed for the table's size) */
-static int 
-simple_read_overlay_region_table ()
-{
-  struct minimal_symbol *msym;
-
-  simple_free_overlay_region_table ();
-  msym = lookup_minimal_symbol ("_novly_regions", 0, 0);
-  if (msym != NULL)
-    cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4);
-  else 
-    return 0;	/* failure */
-  cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12);
-  if (cache_ovly_region_table != NULL)
-    {
-      msym = lookup_minimal_symbol ("_ovly_region_table", 0, 0);
-      if (msym != NULL)
-	{
-	  cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym);
-	  read_target_long_array (cache_ovly_region_table_base, 
-				  (int *) cache_ovly_region_table, 
-				  cache_novly_regions * 3);
-	}
-      else 
-	return 0;	/* failure */
-    }
-  else 
-    return 0;	/* failure */
-  return 1;	/* SUCCESS */
-}
-#endif
-
-/* Function: simple_overlay_update_1 
-   A helper function for simple_overlay_update.  Assuming a cached copy
-   of _ovly_table exists, look through it to find an entry whose vma,
-   lma and size match those of OSECT.  Re-read the entry and make sure
-   it still matches OSECT (else the table may no longer be valid).
-   Set OSECT's mapped state to match the entry.  Return: 1 for
-   success, 0 for failure.  */
-
-static int
-simple_overlay_update_1 (osect)
-     struct obj_section *osect;
-{
-  int i, size;
-
-  size = bfd_get_section_size_before_reloc (osect->the_bfd_section);
-  for (i = 0; i < cache_novlys; i++)
-    if (cache_ovly_table[i][VMA]  == osect->the_bfd_section->vma &&
-	cache_ovly_table[i][LMA]  == osect->the_bfd_section->lma /* &&
-	cache_ovly_table[i][SIZE] == size */)
-      {
-	read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES,
-				(int *) cache_ovly_table[i], 4);
-	if (cache_ovly_table[i][VMA]  == osect->the_bfd_section->vma &&
-	    cache_ovly_table[i][LMA]  == osect->the_bfd_section->lma /* &&
-	    cache_ovly_table[i][SIZE] == size */)
-	  {
-	    osect->ovly_mapped = cache_ovly_table[i][MAPPED];
-	    return 1;
-	  }
-	else	/* Warning!  Warning!  Target's ovly table has changed! */
-	  return 0;
-      }
-  return 0;
-}
-
-/* Function: simple_overlay_update
-   If OSECT is NULL, then update all sections' mapped state 
-   (after re-reading the entire target _ovly_table). 
-   If OSECT is non-NULL, then try to find a matching entry in the 
-   cached ovly_table and update only OSECT's mapped state.
-   If a cached entry can't be found or the cache isn't valid, then 
-   re-read the entire cache, and go ahead and update all sections.  */
-
-static void
-simple_overlay_update (osect)
-     struct obj_section *osect;
-{
-  struct objfile        *objfile;
-
-  /* Were we given an osect to look up?  NULL means do all of them. */
-  if (osect)
-    /* Have we got a cached copy of the target's overlay table? */
-    if (cache_ovly_table != NULL)
-      /* Does its cached location match what's currently in the symtab? */
-      if (cache_ovly_table_base == 
-	  SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0)))
-	/* Then go ahead and try to look up this single section in the cache */
-	if (simple_overlay_update_1 (osect))
-	  /* Found it!  We're done. */
-	  return;
-
-  /* Cached table no good: need to read the entire table anew.
-     Or else we want all the sections, in which case it's actually
-     more efficient to read the whole table in one block anyway.  */
-
-  if (simple_read_overlay_table () == 0)	/* read failed?  No table? */
-    {
-      warning ("Failed to read the target overlay mapping table.");
-      return;
-    }
-  /* Now may as well update all sections, even if only one was requested. */
-  ALL_OBJSECTIONS (objfile, osect)
-    if (section_is_overlay (osect->the_bfd_section))
-      {
-	int i, size;
-
-	size = bfd_get_section_size_before_reloc (osect->the_bfd_section);
-	for (i = 0; i < cache_novlys; i++)
-	  if (cache_ovly_table[i][VMA]  == osect->the_bfd_section->vma &&
-	      cache_ovly_table[i][LMA]  == osect->the_bfd_section->lma /* &&
-	      cache_ovly_table[i][SIZE] == size */)
-	    { /* obj_section matches i'th entry in ovly_table */
-	      osect->ovly_mapped = cache_ovly_table[i][MAPPED];
-	      break;	/* finished with inner for loop: break out */
-	    }
-      }
-}
-
-
-void
-_initialize_symfile ()
-{
-  struct cmd_list_element *c;
-  
-  c = add_cmd ("symbol-file", class_files, symbol_file_command,
-   "Load symbol table from executable file FILE.\n\
-The `file' command can also load symbol tables, as well as setting the file\n\
-to execute.", &cmdlist);
-  c->completer = filename_completer;
-
-  c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command,
-   "Usage: add-symbol-file FILE ADDR\n\
-Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\
-ADDR is the starting address of the file's text.",
-	       &cmdlist);
-  c->completer = filename_completer;
-
-  c = add_cmd ("add-shared-symbol-files", class_files,
-	       add_shared_symbol_files_command,
-   "Load the symbols from shared objects in the dynamic linker's link map.",
-   	       &cmdlist);
-  c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1,
-		     &cmdlist);
-
-  c = add_cmd ("load", class_files, load_command,
-   "Dynamically load FILE into the running program, and record its symbols\n\
-for access from GDB.", &cmdlist);
-  c->completer = filename_completer;
-
-  add_show_from_set
-    (add_set_cmd ("symbol-reloading", class_support, var_boolean,
-		  (char *)&symbol_reloading,
-	  "Set dynamic symbol table reloading multiple times in one run.",
-		  &setlist),
-     &showlist);
-
-  add_prefix_cmd ("overlay", class_support, overlay_command, 
-		  "Commands for debugging overlays.", &overlaylist, 
-		  "overlay ", 0, &cmdlist);
-
-  add_com_alias ("ovly", "overlay", class_alias, 1);
-  add_com_alias ("ov", "overlay", class_alias, 1);
-
-  add_cmd ("map-overlay", class_support, map_overlay_command, 
-	   "Assert that an overlay section is mapped.", &overlaylist);
-
-  add_cmd ("unmap-overlay", class_support, unmap_overlay_command, 
-	   "Assert that an overlay section is unmapped.", &overlaylist);
-
-  add_cmd ("list-overlays", class_support, list_overlays_command, 
-	   "List mappings of overlay sections.", &overlaylist);
-
-  add_cmd ("manual", class_support, overlay_manual_command, 
-	   "Enable overlay debugging.", &overlaylist);
-  add_cmd ("off", class_support, overlay_off_command, 
-	   "Disable overlay debugging.", &overlaylist);
-  add_cmd ("auto", class_support, overlay_auto_command, 
-	   "Enable automatic overlay debugging.", &overlaylist);
-  add_cmd ("load-target", class_support, overlay_load_command, 
-	   "Read the overlay mapping state from the target.", &overlaylist);
-
-  /* Filename extension to source language lookup table: */
-  init_filename_language_table ();
-  c = add_set_cmd ("extension-language", class_files, var_string_noescape,
-		   (char *) &ext_args, 
-		   "Set mapping between filename extension and source language.\n\
-Usage: set extension-language .foo bar",
-		     &setlist);
-  c->function.cfunc = set_ext_lang_command;
-
-  add_info ("extensions", info_ext_lang_command, 
-	    "All filename extensions associated with a source language.");
-}