Initial creation of sourceware repository

1 files changed, 0 insertions, 988 deletions

diff --git a/gdb/objfiles.c b/gdb/objfiles.c
deleted file mode 100644
index 971a7d4..0000000
--- a/gdb/objfiles.c
+++ /dev/null
@@ -1,988 +0,0 @@
-/* GDB routines for manipulating objfiles.
-   Copyright 1992, 1993, 1994, 1995 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.  */
-
-/* This file contains support routines for creating, manipulating, and
-   destroying objfile structures. */
-
-#include "defs.h"
-#include "bfd.h"		/* Binary File Description */
-#include "symtab.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "gdb-stabs.h"
-#include "target.h"
-
-#include <sys/types.h>
-#include "gdb_stat.h"
-#include <fcntl.h>
-#include "obstack.h"
-#include "gdb_string.h"
-
-/* Prototypes for local functions */
-
-#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
-
-static int
-open_existing_mapped_file PARAMS ((char *, long, int));
-
-static int
-open_mapped_file PARAMS ((char *filename, long mtime, int mapped));
-
-static PTR
-map_to_file PARAMS ((int));
-
-#endif  /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-
-static void
-add_to_objfile_sections PARAMS ((bfd *, sec_ptr, PTR));
-
-/* Externally visible variables that are owned by this module.
-   See declarations in objfile.h for more info. */
-
-struct objfile *object_files;		/* Linked list of all objfiles */
-struct objfile *current_objfile;	/* For symbol file being read in */
-struct objfile *symfile_objfile;	/* Main symbol table loaded from */
-struct objfile *rt_common_objfile;	/* For runtime common symbols */
-
-int mapped_symbol_files;		/* Try to use mapped symbol files */
-
-/* Locate all mappable sections of a BFD file. 
-   objfile_p_char is a char * to get it through
-   bfd_map_over_sections; we cast it back to its proper type.  */
-
-#ifndef TARGET_KEEP_SECTION
-#define TARGET_KEEP_SECTION(ASECT)	0
-#endif
-
-static void
-add_to_objfile_sections (abfd, asect, objfile_p_char)
-     bfd *abfd;
-     sec_ptr asect;
-     PTR objfile_p_char;
-{
-  struct objfile *objfile = (struct objfile *) objfile_p_char;
-  struct obj_section section;
-  flagword aflag;
-
-  aflag = bfd_get_section_flags (abfd, asect);
-
-  if (!(aflag & SEC_ALLOC) && !(TARGET_KEEP_SECTION(asect)))
-    return;
-
-  if (0 == bfd_section_size (abfd, asect))
-    return;
-  section.offset = 0;
-  section.objfile = objfile;
-  section.the_bfd_section = asect;
-  section.ovly_mapped = 0;
-  section.addr = bfd_section_vma (abfd, asect);
-  section.endaddr = section.addr + bfd_section_size (abfd, asect);
-  obstack_grow (&objfile->psymbol_obstack, (char *) &section, sizeof(section));
-  objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1);
-}
-
-/* Builds a section table for OBJFILE.
-   Returns 0 if OK, 1 on error (in which case bfd_error contains the
-   error).  */
-
-int
-build_objfile_section_table (objfile)
-     struct objfile *objfile;
-{
-  /* objfile->sections can be already set when reading a mapped symbol
-     file.  I believe that we do need to rebuild the section table in
-     this case (we rebuild other things derived from the bfd), but we
-     can't free the old one (it's in the psymbol_obstack).  So we just
-     waste some memory.  */
-
-  objfile->sections_end = 0;
-  bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *)objfile);
-  objfile->sections = (struct obj_section *)
-    obstack_finish (&objfile->psymbol_obstack);
-  objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end;
-  return(0);
-}
-
-/* Given a pointer to an initialized bfd (ABFD) and a flag that indicates
-   whether or not an objfile is to be mapped (MAPPED), allocate a new objfile
-   struct, fill it in as best we can, link it into the list of all known
-   objfiles, and return a pointer to the new objfile struct.
-
-   USER_LOADED is simply recorded in the objfile.  This record offers a way for
-   run_command to remove old objfile entries which are no longer valid (i.e.,
-   are associated with an old inferior), but to preserve ones that the user
-   explicitly loaded via the add-symbol-file command.
-
-   IS_SOLIB is also simply recorded in the objfile. */
-
-struct objfile *
-allocate_objfile (abfd, mapped, user_loaded, is_solib)
-     bfd *abfd;
-     int mapped;
-     int  user_loaded;
-     int  is_solib;
-{
-  struct objfile *objfile = NULL;
-  struct objfile *last_one = NULL;
-
-  mapped |= mapped_symbol_files;
-
-#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
-  if (abfd != NULL)
-  {
-
-    /* If we can support mapped symbol files, try to open/reopen the
-       mapped file that corresponds to the file from which we wish to
-       read symbols.  If the objfile is to be mapped, we must malloc
-       the structure itself using the mmap version, and arrange that
-       all memory allocation for the objfile uses the mmap routines.
-       If we are reusing an existing mapped file, from which we get
-       our objfile pointer, we have to make sure that we update the
-       pointers to the alloc/free functions in the obstack, in case
-       these functions have moved within the current gdb.  */
-
-    int fd;
-
-    fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd),
-			   mapped);
-    if (fd >= 0)
-      {
-	PTR md;
-
-	if ((md = map_to_file (fd)) == NULL)
-	  {
-	    close (fd);
-	  }
-	else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL)
-	  {
-	    /* Update memory corruption handler function addresses. */
-	    init_malloc (md);
-	    objfile -> md = md;
-	    objfile -> mmfd = fd;
-	    /* Update pointers to functions to *our* copies */
-	    obstack_chunkfun (&objfile -> psymbol_cache.cache, xmmalloc);
-	    obstack_freefun (&objfile -> psymbol_cache.cache, mfree);
-	    obstack_chunkfun (&objfile -> psymbol_obstack, xmmalloc);
-	    obstack_freefun (&objfile -> psymbol_obstack, mfree);
-	    obstack_chunkfun (&objfile -> symbol_obstack, xmmalloc);
-	    obstack_freefun (&objfile -> symbol_obstack, mfree);
-	    obstack_chunkfun (&objfile -> type_obstack, xmmalloc);
-	    obstack_freefun (&objfile -> type_obstack, mfree);
-	    /* If already in objfile list, unlink it. */
-	    unlink_objfile (objfile);
-	    /* Forget things specific to a particular gdb, may have changed. */
-	    objfile -> sf = NULL;
-	  }
-	else
-	  {
-
-	    /* Set up to detect internal memory corruption.  MUST be
-	       done before the first malloc.  See comments in
-	       init_malloc() and mmcheck().  */
-
-	    init_malloc (md);
-
-	    objfile = (struct objfile *)
-	      xmmalloc (md, sizeof (struct objfile));
-	    memset (objfile, 0, sizeof (struct objfile));
-	    objfile -> md = md;
-	    objfile -> mmfd = fd;
-	    objfile -> flags |= OBJF_MAPPED;
-	    mmalloc_setkey (objfile -> md, 0, objfile);
-	    obstack_specify_allocation_with_arg (&objfile -> psymbol_cache.cache,
-						 0, 0, xmmalloc, mfree,
-						 objfile -> md);
-	    obstack_specify_allocation_with_arg (&objfile -> psymbol_obstack,
-						 0, 0, xmmalloc, mfree,
-						 objfile -> md);
-	    obstack_specify_allocation_with_arg (&objfile -> symbol_obstack,
-						 0, 0, xmmalloc, mfree,
-						 objfile -> md);
-	    obstack_specify_allocation_with_arg (&objfile -> type_obstack,
-						 0, 0, xmmalloc, mfree,
-						 objfile -> md);
-	  }
-      }
-
-    if (mapped && (objfile == NULL))
-      {
-	warning ("symbol table for '%s' will not be mapped",
-		 bfd_get_filename (abfd));
-      }
-  }
-#else	/* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */
-
-  if (mapped)
-    {
-      warning ("mapped symbol tables are not supported on this machine; missing or broken mmap().");
-
-      /* Turn off the global flag so we don't try to do mapped symbol tables
-	 any more, which shuts up gdb unless the user specifically gives the
-	 "mapped" keyword again. */
-
-      mapped_symbol_files = 0;
-    }
-
-#endif	/* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-
-  /* If we don't support mapped symbol files, didn't ask for the file to be
-     mapped, or failed to open the mapped file for some reason, then revert
-     back to an unmapped objfile. */
-
-  if (objfile == NULL)
-    {
-      objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
-      memset (objfile, 0, sizeof (struct objfile));
-      objfile -> md = NULL;
-      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);
-    }
-
-  /* Update the per-objfile information that comes from the bfd, ensuring
-     that any data that is reference is saved in the per-objfile data
-     region. */
-
-  objfile -> obfd = abfd;
-  if (objfile -> name != NULL)
-    {
-      mfree (objfile -> md, objfile -> name);
-    }
-  if (abfd != NULL)
-    {
-      objfile -> name = mstrsave (objfile -> md, bfd_get_filename (abfd));
-      objfile -> mtime = bfd_get_mtime (abfd);
-
-      /* Build section table.  */
-
-      if (build_objfile_section_table (objfile))
-	{
-	  error ("Can't find the file sections in `%s': %s", 
-		 objfile -> name, bfd_errmsg (bfd_get_error ()));
-	}
-    }
-
-  /* Add this file onto the tail of the linked list of other such files. */
-
-  objfile -> next = NULL;
-  if (object_files == NULL)
-    object_files = objfile;
-  else
-    {
-      for (last_one = object_files;
-	   last_one -> next;
-	   last_one = last_one -> next);
-      last_one -> next = objfile;
-    }
-
-  /* Record whether this objfile was created because the user explicitly
-     caused it (e.g., used the add-symbol-file command).
-     */
-  objfile -> user_loaded = user_loaded;
-
-  /* Record whether this objfile definitely represents a solib. */
-  objfile -> is_solib = is_solib;
-
-  return (objfile);
-}
-
-/* Put OBJFILE at the front of the list.  */
-
-void
-objfile_to_front (objfile)
-     struct objfile *objfile;
-{
-  struct objfile **objp;
-  for (objp = &object_files; *objp != NULL; objp = &((*objp)->next))
-    {
-      if (*objp == objfile)
-	{
-	  /* Unhook it from where it is.  */
-	  *objp = objfile->next;
-	  /* Put it in the front.  */
-	  objfile->next = object_files;
-	  object_files = objfile;
-	  break;
-	}
-    }
-}
-
-/* Unlink OBJFILE from the list of known objfiles, if it is found in the
-   list.
-
-   It is not a bug, or error, to call this function if OBJFILE is not known
-   to be in the current list.  This is done in the case of mapped objfiles,
-   for example, just to ensure that the mapped objfile doesn't appear twice
-   in the list.  Since the list is threaded, linking in a mapped objfile
-   twice would create a circular list.
-
-   If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
-   unlinking it, just to ensure that we have completely severed any linkages
-   between the OBJFILE and the list. */
-
-void
-unlink_objfile (objfile)
-     struct objfile *objfile;
-{
-  struct objfile** objpp;
-
-  for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp) -> next))
-    {
-      if (*objpp == objfile) 
-	{
-	  *objpp = (*objpp) -> next;
-	  objfile -> next = NULL;
-	  break;
-	}
-    }
-}
-
-
-/* Destroy an objfile and all the symtabs and psymtabs under it.  Note
-   that as much as possible is allocated on the symbol_obstack and
-   psymbol_obstack, so that the memory can be efficiently freed.
-
-   Things which we do NOT free because they are not in malloc'd memory
-   or not in memory specific to the objfile include:
-
-   	objfile -> sf
-
-   FIXME:  If the objfile is using reusable symbol information (via mmalloc),
-   then we need to take into account the fact that more than one process
-   may be using the symbol information at the same time (when mmalloc is
-   extended to support cooperative locking).  When more than one process
-   is using the mapped symbol info, we need to be more careful about when
-   we free objects in the reusable area. */
-
-void
-free_objfile (objfile)
-     struct objfile *objfile;
-{
-  /* First do any symbol file specific actions required when we are
-     finished with a particular symbol file.  Note that if the objfile
-     is using reusable symbol information (via mmalloc) then each of
-     these routines is responsible for doing the correct thing, either
-     freeing things which are valid only during this particular gdb
-     execution, or leaving them to be reused during the next one. */
-
-  if (objfile -> sf != NULL)
-    {
-      (*objfile -> sf -> sym_finish) (objfile);
-    }
-
-  /* We always close the bfd. */
-
-  if (objfile -> obfd != NULL)
-    {
-      char *name = bfd_get_filename (objfile->obfd);
-      if (!bfd_close (objfile -> obfd))
-	warning ("cannot close \"%s\": %s",
-		 name, bfd_errmsg (bfd_get_error ()));
-      free (name);
-    }
-
-  /* Remove it from the chain of all objfiles. */
-
-  unlink_objfile (objfile);
-
-  /* If we are going to free the runtime common objfile, mark it
-     as unallocated.  */
-
-  if (objfile == rt_common_objfile)
-    rt_common_objfile = NULL;
-
-  /* Before the symbol table code was redone to make it easier to
-     selectively load and remove information particular to a specific
-     linkage unit, gdb used to do these things whenever the monolithic
-     symbol table was blown away.  How much still needs to be done
-     is unknown, but we play it safe for now and keep each action until
-     it is shown to be no longer needed. */
-     
-#if defined (CLEAR_SOLIB)
-  CLEAR_SOLIB ();
-  /* CLEAR_SOLIB closes the bfd's for any shared libraries.  But
-     the to_sections for a core file might refer to those bfd's.  So
-     detach any core file.  */
-  {
-    struct target_ops *t = find_core_target ();
-    if (t != NULL)
-      (t->to_detach) (NULL, 0);
-  }
-#endif
-  /* I *think* all our callers call clear_symtab_users.  If so, no need
-     to call this here.  */
-  clear_pc_function_cache ();
-
-  /* The last thing we do is free the objfile struct itself for the
-     non-reusable case, or detach from the mapped file for the reusable
-     case.  Note that the mmalloc_detach or the mfree is the last thing
-     we can do with this objfile. */
-
-#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
-
-  if (objfile -> flags & OBJF_MAPPED)
-    {
-      /* Remember the fd so we can close it.  We can't close it before
-	 doing the detach, and after the detach the objfile is gone. */
-      int mmfd;
-
-      mmfd = objfile -> mmfd;
-      mmalloc_detach (objfile -> md);
-      objfile = NULL;
-      close (mmfd);
-    }
-
-#endif	/* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-
-  /* If we still have an objfile, then either we don't support reusable
-     objfiles or this one was not reusable.  So free it normally. */
-
-  if (objfile != NULL)
-    {
-      if (objfile -> name != NULL)
-	{
-	  mfree (objfile -> md, objfile -> name);
-	}
-      if (objfile->global_psymbols.list)
-	mfree (objfile->md, objfile->global_psymbols.list);
-      if (objfile->static_psymbols.list)
-	mfree (objfile->md, objfile->static_psymbols.list);
-      /* Free the obstacks for non-reusable objfiles */
-      obstack_free (&objfile -> psymbol_cache.cache, 0);
-      obstack_free (&objfile -> psymbol_obstack, 0);
-      obstack_free (&objfile -> symbol_obstack, 0);
-      obstack_free (&objfile -> type_obstack, 0);
-      mfree (objfile -> md, objfile);
-      objfile = NULL;
-    }
-}
-
-
-/* Free all the object files at once and clean up their users.  */
-
-void
-free_all_objfiles ()
-{
-  struct objfile *objfile, *temp;
-
-  ALL_OBJFILES_SAFE (objfile, temp)
-    {
-      free_objfile (objfile);
-    }
-  clear_symtab_users ();
-}
-
-/* Relocate OBJFILE to NEW_OFFSETS.  There should be OBJFILE->NUM_SECTIONS
-   entries in new_offsets.  */
-void
-objfile_relocate (objfile, new_offsets)
-     struct objfile *objfile;
-     struct section_offsets *new_offsets;
-{
-  struct section_offsets *delta = (struct section_offsets *) 
-    alloca (sizeof (struct section_offsets)
-	    + objfile->num_sections * sizeof (delta->offsets));
-
-  {
-    int i;
-    int something_changed = 0;
-    for (i = 0; i < objfile->num_sections; ++i)
-      {
-	ANOFFSET (delta, i) =
-	  ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i);
-	if (ANOFFSET (delta, i) != 0)
-	  something_changed = 1;
-      }
-    if (!something_changed)
-      return;
-  }
-
-  /* OK, get all the symtabs.  */
-  {
-    struct symtab *s;
-
-    ALL_OBJFILE_SYMTABS (objfile, s)
-      {
-	struct linetable *l;
-	struct blockvector *bv;
-	int i;
-	
-	/* First the line table.  */
-	l = LINETABLE (s);
-	if (l)
-	  {
-	    for (i = 0; i < l->nitems; ++i)
-	      l->item[i].pc += ANOFFSET (delta, s->block_line_section);
-	  }
-
-	/* Don't relocate a shared blockvector more than once.  */
-	if (!s->primary)
-	  continue;
-
-	bv = BLOCKVECTOR (s);
-	for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
-	  {
-	    struct block *b;
-	    int j;
-	    
-	    b = BLOCKVECTOR_BLOCK (bv, i);
-	    BLOCK_START (b) += ANOFFSET (delta, s->block_line_section);
-	    BLOCK_END (b)   += ANOFFSET (delta, s->block_line_section);
-
-	    for (j = 0; j < BLOCK_NSYMS (b); ++j)
-	      {
-		struct symbol *sym = BLOCK_SYM (b, j);
-		/* The RS6000 code from which this was taken skipped
-		   any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE.
-		   But I'm leaving out that test, on the theory that
-		   they can't possibly pass the tests below.  */
-		if ((SYMBOL_CLASS (sym) == LOC_LABEL
-		     || SYMBOL_CLASS (sym) == LOC_STATIC 
-                     || SYMBOL_CLASS (sym) == LOC_INDIRECT)
-		    && SYMBOL_SECTION (sym) >= 0)
-		  {
-		    SYMBOL_VALUE_ADDRESS (sym) += 
-		      ANOFFSET (delta, SYMBOL_SECTION (sym));
-		  }
-#ifdef MIPS_EFI_SYMBOL_NAME
-		/* Relocate Extra Function Info for ecoff.  */
-
-		else
-		  if (SYMBOL_CLASS (sym) == LOC_CONST
-		      && SYMBOL_NAMESPACE (sym) == LABEL_NAMESPACE
-		      && STRCMP (SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0)
-		ecoff_relocate_efi (sym, ANOFFSET (delta, 
-						   s->block_line_section));
-#endif
-	      }
-	  }
-      }
-  }
-
-  {
-    struct partial_symtab *p;
-
-    ALL_OBJFILE_PSYMTABS (objfile, p)
-      {
-	p->textlow += ANOFFSET (delta, SECT_OFF_TEXT);
-	p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT);
-      }
-  }
-
-  {
-    struct partial_symbol **psym;
-
-    for (psym = objfile->global_psymbols.list;
-	 psym < objfile->global_psymbols.next;
-	 psym++)
-      if (SYMBOL_SECTION (*psym) >= 0)
-	SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, 
-						  SYMBOL_SECTION (*psym));
-    for (psym = objfile->static_psymbols.list;
-	 psym < objfile->static_psymbols.next;
-	 psym++)
-      if (SYMBOL_SECTION (*psym) >= 0)
-	SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, 
-						  SYMBOL_SECTION (*psym));
-  }
-
-  {
-    struct minimal_symbol *msym;
-    ALL_OBJFILE_MSYMBOLS (objfile, msym)
-      if (SYMBOL_SECTION (msym) >= 0)
-	SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym));
-  }
-  /* Relocating different sections by different amounts may cause the symbols
-     to be out of order.  */
-  msymbols_sort (objfile);
-
-  {
-    int i;
-    for (i = 0; i < objfile->num_sections; ++i)
-      ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i);
-  }
-
-  {
-    struct obj_section *s;
-    bfd *abfd;
-
-    abfd = objfile->obfd;
-
-    for (s = objfile->sections;
-	 s < objfile->sections_end; ++s)
-      {
-	flagword flags;
-
-	flags = bfd_get_section_flags (abfd, s->the_bfd_section);
-
-	if (flags & SEC_CODE)
-	  {
-	    s->addr    += ANOFFSET (delta, SECT_OFF_TEXT);
-	    s->endaddr += ANOFFSET (delta, SECT_OFF_TEXT);
-	  }
-	else if (flags & (SEC_DATA | SEC_LOAD))
-	  {
-	    s->addr    += ANOFFSET (delta, SECT_OFF_DATA);
-	    s->endaddr += ANOFFSET (delta, SECT_OFF_DATA);
-	  }
-	else if (flags & SEC_ALLOC)
-	  {
-	    s->addr    += ANOFFSET (delta, SECT_OFF_BSS);
-	    s->endaddr += ANOFFSET (delta, SECT_OFF_BSS);
-	  }
-      }
-  }
-
-  if (objfile->ei.entry_point != ~(CORE_ADDR)0)
-    objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT);
-
-  if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC)
-    {
-      objfile->ei.entry_func_lowpc  += ANOFFSET (delta, SECT_OFF_TEXT);
-      objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
-    }
-
-  if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC)
-    {
-      objfile->ei.entry_file_lowpc  += ANOFFSET (delta, SECT_OFF_TEXT);
-      objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
-    }
-
-  if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC)
-    {
-      objfile->ei.main_func_lowpc  += ANOFFSET (delta, SECT_OFF_TEXT);
-      objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
-    }
-
-  /* Relocate breakpoints as necessary, after things are relocated. */
-  breakpoint_re_set ();
-}
-
-/* Many places in gdb want to test just to see if we have any partial
-   symbols available.  This function returns zero if none are currently
-   available, nonzero otherwise. */
-
-int
-have_partial_symbols ()
-{
-  struct objfile *ofp;
-
-  ALL_OBJFILES (ofp)
-    {
-      if (ofp -> psymtabs != NULL)
-	{
-	  return 1;
-	}
-    }
-  return 0;
-}
-
-/* Many places in gdb want to test just to see if we have any full
-   symbols available.  This function returns zero if none are currently
-   available, nonzero otherwise. */
-
-int
-have_full_symbols ()
-{
-  struct objfile *ofp;
-
-  ALL_OBJFILES (ofp)
-    {
-      if (ofp -> symtabs != NULL)
-	{
-	  return 1;
-	}
-    }
-  return 0;
-}
-
-
-/* This operations deletes all objfile entries that represent solibs that
-   weren't explicitly loaded by the user, via e.g., the add-symbol-file
-   command.
-   */
-void
-objfile_purge_solibs ()
-{
-  struct objfile *  objf;
-  struct objfile *  temp;
-
-  ALL_OBJFILES_SAFE (objf, temp)
-  {
-    /* We assume that the solib package has been purged already, or will
-       be soon.
-       */
-    if (! objf->user_loaded && objf->is_solib)
-      free_objfile (objf);
-  }
-}
-
-
-/* Many places in gdb want to test just to see if we have any minimal
-   symbols available.  This function returns zero if none are currently
-   available, nonzero otherwise. */
-
-int
-have_minimal_symbols ()
-{
-  struct objfile *ofp;
-
-  ALL_OBJFILES (ofp)
-    {
-      if (ofp -> msymbols != NULL)
-	{
-	  return 1;
-	}
-    }
-  return 0;
-}
-
-#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
-
-/* Given the name of a mapped symbol file in SYMSFILENAME, and the timestamp
-   of the corresponding symbol file in MTIME, try to open an existing file
-   with the name SYMSFILENAME and verify it is more recent than the base
-   file by checking it's timestamp against MTIME.
-
-   If SYMSFILENAME does not exist (or can't be stat'd), simply returns -1.
-
-   If SYMSFILENAME does exist, but is out of date, we check to see if the
-   user has specified creation of a mapped file.  If so, we don't issue
-   any warning message because we will be creating a new mapped file anyway,
-   overwriting the old one.  If not, then we issue a warning message so that
-   the user will know why we aren't using this existing mapped symbol file.
-   In either case, we return -1.
-
-   If SYMSFILENAME does exist and is not out of date, but can't be opened for
-   some reason, then prints an appropriate system error message and returns -1.
-
-   Otherwise, returns the open file descriptor.  */
-
-static int
-open_existing_mapped_file (symsfilename, mtime, mapped)
-     char *symsfilename;
-     long mtime;
-     int mapped;
-{
-  int fd = -1;
-  struct stat sbuf;
-
-  if (stat (symsfilename, &sbuf) == 0)
-    {
-      if (sbuf.st_mtime < mtime)
-	{
-	  if (!mapped)
-	    {
-	      warning ("mapped symbol file `%s' is out of date, ignored it",
-		       symsfilename);
-	    }
-	}
-      else if ((fd = open (symsfilename, O_RDWR)) < 0)
-	{
-	  if (error_pre_print)
-	    {
-	      printf_unfiltered (error_pre_print);
-	    }
-	  print_sys_errmsg (symsfilename, errno);
-	}
-    }
-  return (fd);
-}
-
-/* Look for a mapped symbol file that corresponds to FILENAME and is more
-   recent than MTIME.  If MAPPED is nonzero, the user has asked that gdb
-   use a mapped symbol file for this file, so create a new one if one does
-   not currently exist.
-
-   If found, then return an open file descriptor for the file, otherwise
-   return -1.
-
-   This routine is responsible for implementing the policy that generates
-   the name of the mapped symbol file from the name of a file containing
-   symbols that gdb would like to read.  Currently this policy is to append
-   ".syms" to the name of the file.
-
-   This routine is also responsible for implementing the policy that
-   determines where the mapped symbol file is found (the search path).
-   This policy is that when reading an existing mapped file, a file of
-   the correct name in the current directory takes precedence over a
-   file of the correct name in the same directory as the symbol file.
-   When creating a new mapped file, it is always created in the current
-   directory.  This helps to minimize the chances of a user unknowingly
-   creating big mapped files in places like /bin and /usr/local/bin, and
-   allows a local copy to override a manually installed global copy (in
-   /bin for example).  */
-
-static int
-open_mapped_file (filename, mtime, mapped)
-     char *filename;
-     long mtime;
-     int mapped;
-{
-  int fd;
-  char *symsfilename;
-
-  /* First try to open an existing file in the current directory, and
-     then try the directory where the symbol file is located. */
-
-  symsfilename = concat ("./", basename (filename), ".syms", (char *) NULL);
-  if ((fd = open_existing_mapped_file (symsfilename, mtime, mapped)) < 0)
-    {
-      free (symsfilename);
-      symsfilename = concat (filename, ".syms", (char *) NULL);
-      fd = open_existing_mapped_file (symsfilename, mtime, mapped);
-    }
-
-  /* If we don't have an open file by now, then either the file does not
-     already exist, or the base file has changed since it was created.  In
-     either case, if the user has specified use of a mapped file, then
-     create a new mapped file, truncating any existing one.  If we can't
-     create one, print a system error message saying why we can't.
-
-     By default the file is rw for everyone, with the user's umask taking
-     care of turning off the permissions the user wants off. */
-
-  if ((fd < 0) && mapped)
-    {
-      free (symsfilename);
-      symsfilename = concat ("./", basename (filename), ".syms",
-			     (char *) NULL);
-      if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0)
-	{
-	  if (error_pre_print)
-	    {
-	      printf_unfiltered (error_pre_print);
-	    }
-	  print_sys_errmsg (symsfilename, errno);
-	}
-    }
-
-  free (symsfilename);
-  return (fd);
-}
-
-static PTR
-map_to_file (fd)
-     int fd;
-{
-  PTR md;
-  CORE_ADDR mapto;
-
-  md = mmalloc_attach (fd, (PTR) 0);
-  if (md != NULL)
-    {
-      mapto = (CORE_ADDR) mmalloc_getkey (md, 1);
-      md = mmalloc_detach (md);
-      if (md != NULL)
-	{
-	  /* FIXME: should figure out why detach failed */
-	  md = NULL;
-	}
-      else if (mapto != (CORE_ADDR) NULL)
-	{
-	  /* This mapping file needs to be remapped at "mapto" */
-	  md = mmalloc_attach (fd, (PTR) mapto);
-	}
-      else
-	{
-	  /* This is a freshly created mapping file. */
-	  mapto = (CORE_ADDR) mmalloc_findbase (20 * 1024 * 1024);
-	  if (mapto != 0)
-	    {
-	      /* To avoid reusing the freshly created mapping file, at the 
-		 address selected by mmap, we must truncate it before trying
-		 to do an attach at the address we want. */
-	      ftruncate (fd, 0);
-	      md = mmalloc_attach (fd, (PTR) mapto);
-	      if (md != NULL)
-		{
-		  mmalloc_setkey (md, 1, (PTR) mapto);
-		}
-	    }
-	}
-    }
-  return (md);
-}
-
-#endif	/* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-
-/* Returns a section whose range includes PC and SECTION, 
-   or NULL if none found.  Note the distinction between the return type, 
-   struct obj_section (which is defined in gdb), and the input type
-   struct sec (which is a bfd-defined data type).  The obj_section
-   contains a pointer to the bfd struct sec section.  */
-
-struct obj_section *
-find_pc_sect_section (pc, section)
-     CORE_ADDR pc;
-     struct sec *section;
-{
-  struct obj_section *s;
-  struct objfile *objfile;
-  
-  ALL_OBJFILES (objfile)
-    for (s = objfile->sections; s < objfile->sections_end; ++s)
-#if defined(HPUXHPPA)
-      if ((section == 0 || section == s->the_bfd_section) && 
-	  s->addr <= pc && pc <= s->endaddr)
-#else
-      if ((section == 0 || section == s->the_bfd_section) && 
-	  s->addr <= pc && pc < s->endaddr)
-#endif
-	return(s);
-
-  return(NULL);
-}
-
-/* Returns a section whose range includes PC or NULL if none found. 
-   Backward compatibility, no section.  */
-
-struct obj_section *
-find_pc_section(pc)
-     CORE_ADDR pc;
-{
-  return find_pc_sect_section (pc, find_pc_mapped_section (pc));
-}
-  
-
-/* In SVR4, we recognize a trampoline by it's section name. 
-   That is, if the pc is in a section named ".plt" then we are in
-   a trampoline.  */
-
-int
-in_plt_section(pc, name)
-     CORE_ADDR pc;
-     char *name;
-{
-  struct obj_section *s;
-  int retval = 0;
-  
-  s = find_pc_section(pc);
-  
-  retval = (s != NULL
-	    && s->the_bfd_section->name != NULL
-	    && STREQ (s->the_bfd_section->name, ".plt"));
-  return(retval);
-}