Initial creation of sourceware repository

1 files changed, 0 insertions, 1640 deletions

diff --git a/gdb/somsolib.c b/gdb/somsolib.c
deleted file mode 100644
index 870177c..0000000
--- a/gdb/somsolib.c
+++ /dev/null
@@ -1,1640 +0,0 @@
-/* Handle HP SOM shared libraries for GDB, the GNU Debugger.
-   Copyright 1993, 1996, 1999 Free Software Foundation, Inc.
-
-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.
-
-Written by the Center for Software Science at the Univerity of Utah
-and by Cygnus Support.  */
-
-
-#include "defs.h"
-
-#include "frame.h"
-#include "bfd.h"
-#include "som.h"
-#include "libhppa.h"
-#include "gdbcore.h"
-#include "symtab.h"
-#include "breakpoint.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "inferior.h"
-#include "gdb-stabs.h"
-#include "gdb_stat.h"
-#include "gdbcmd.h"
-#include "assert.h"
-#include "language.h"
-
-#include <fcntl.h>
-
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-/* Uncomment this to turn on some debugging output.
- */
-
-/* #define SOLIB_DEBUG
- */
- 
-/* Defined in exec.c; used to prevent dangling pointer bug.
- */
-extern struct target_ops exec_ops;
-
-/* This lives in hppa-tdep.c. */
-extern struct unwind_table_entry *find_unwind_entry PARAMS ((CORE_ADDR pc));
-
-/* These ought to be defined in some public interface, but aren't.  They
-   define the meaning of the various bits in the distinguished __dld_flags
-   variable that is declared in every debuggable a.out on HP-UX, and that
-   is shared between the debugger and the dynamic linker.
-   */
-#define DLD_FLAGS_MAPPRIVATE    0x1
-#define DLD_FLAGS_HOOKVALID     0x2
-#define DLD_FLAGS_LISTVALID     0x4
-#define DLD_FLAGS_BOR_ENABLE    0x8
-
-/* TODO:
-
-   * Most of this code should work for hp300 shared libraries.  Does
-   anyone care enough to weed out any SOM-isms.
-
-   * Support for hpux8 dynamic linker.  */
-
-/* The basic structure which describes a dynamically loaded object.  This
-   data structure is private to the dynamic linker and isn't found in
-   any HPUX include file.  */
-
-struct som_solib_mapped_entry
-{
-  /* The name of the library.  */
-  char *name;
-
-  /* Version of this structure (it is expected to change again in hpux10).  */
-  unsigned char struct_version;
-
-  /* Binding mode for this library.  */
-  unsigned char bind_mode;
-
-  /* Version of this library.  */
-  short library_version;
-
-  /* Start of text address,
-   * link-time text location (length of text area),
-   * end of text address.  */
-  CORE_ADDR text_addr;
-  CORE_ADDR text_link_addr;
-  CORE_ADDR text_end;
-
-  /* Start of data, start of bss and end of data.  */
-  CORE_ADDR data_start;
-  CORE_ADDR bss_start;
-  CORE_ADDR data_end;
-
-  /* Value of linkage pointer (%r19).  */
-  CORE_ADDR got_value;
-
-  /* Next entry.  */
-  struct som_solib_mapped_entry *next;
-
-  /* There are other fields, but I don't have information as to what is
-     contained in them.  */
-
-  /* For versions from HPUX-10.30 and up */
-
-  /* Address in target of offset from thread-local register of
-   * start of this thread's data.  I.e., the first thread-local
-   * variable in this shared library starts at *(tsd_start_addr)
-   * from that area pointed to by cr27 (mpsfu_hi).
-   *
-   * We do the indirection as soon as we read it, so from then
-   * on it's the offset itself.
-   */
-  CORE_ADDR tsd_start_addr;
-
-  /* Following this are longwords holding:
-   *
-   * ?, ?, ?, ptr to -1, ptr to-1, ptr to lib name (leaf name),
-   * ptr to __data_start, ptr to __data_end
-   */
-
-  
-};
-
-/* A structure to keep track of all the known shared objects.  */
-struct so_list
-{
-  struct som_solib_mapped_entry som_solib;
-  struct objfile *objfile;
-  bfd *abfd;
-  struct section_table *sections;
-  struct section_table *sections_end;
-/* elz: added this field to store the address in target space (in the
-   library) of the library descriptor (handle) which we read into
-   som_solib_mapped_entry structure*/
-  CORE_ADDR solib_addr;
-  struct so_list *next;
-  
-};
-
-static struct so_list *so_list_head;
-
-
-/* This is the cumulative size in bytes of the symbol tables of all
-   shared objects on the so_list_head list.  (When we say size, here
-   we mean of the information before it is brought into memory and
-   potentially expanded by GDB.)  When adding a new shlib, this value
-   is compared against the threshold size, held by auto_solib_add
-   (in megabytes).  If adding symbols for the new shlib would cause
-   the total size to exceed the threshold, then the new shlib's symbols
-   are not loaded.
-   */
-static LONGEST  som_solib_total_st_size;
-
-/* When the threshold is reached for any shlib, we refuse to add
-   symbols for subsequent shlibs, even if those shlibs' symbols would
-   be small enough to fit under the threshold.  (Although this may
-   result in one, early large shlib preventing the loading of later,
-   smalller shlibs' symbols, it allows us to issue one informational
-   message.  The alternative, to issue a message for each shlib whose
-   symbols aren't loaded, could be a big annoyance where the threshold
-   is exceeded due to a very large number of shlibs.)
-   */
-static int  som_solib_st_size_threshold_exceeded;
-
-/* These addresses should be filled in by som_solib_create_inferior_hook.
-   They are also used elsewhere in this module.
-   */
-typedef struct {
-  CORE_ADDR  address;
-  struct unwind_table_entry *  unwind;
-} addr_and_unwind_t;
-
-/* When adding fields, be sure to clear them in _initialize_som_solib. */
-static struct {
-  boolean  is_valid;
-  addr_and_unwind_t  hook;
-  addr_and_unwind_t  hook_stub;
-  addr_and_unwind_t  load;
-  addr_and_unwind_t  load_stub;
-  addr_and_unwind_t  unload;
-  addr_and_unwind_t  unload2;
-  addr_and_unwind_t  unload_stub;
-} dld_cache;
-
-
-
-static void som_sharedlibrary_info_command PARAMS ((char *, int));
-
-static void som_solib_sharedlibrary_command PARAMS ((char *, int));
-
-static LONGEST
-som_solib_sizeof_symbol_table (filename)
-  char *  filename;
-{
-  bfd *  abfd;
-  int  desc;
-  char *  absolute_name;
-  LONGEST  st_size = (LONGEST) 0;
-  asection *  sect;
-
-  /* We believe that filename was handed to us by the dynamic linker, and
-     is therefore always an absolute path.
-     */
-  desc = openp (getenv ("PATH"), 1, filename, O_RDONLY | O_BINARY, 0, &absolute_name);
-  if (desc < 0)
-    {
-      perror_with_name (filename);
-    }
-  filename = absolute_name;
-
-  abfd = bfd_fdopenr (filename, gnutarget, desc);
-  if (! abfd)
-    {
-      close (desc);
-      make_cleanup (free, filename);
-      error ("\"%s\": can't open to read symbols: %s.", filename,
-	     bfd_errmsg (bfd_get_error ()));
-    }
-  
-  if (!bfd_check_format (abfd, bfd_object))   /* Reads in section info */
-    {
-      bfd_close (abfd);	/* This also closes desc */
-      make_cleanup (free, filename);
-      error ("\"%s\": can't read symbols: %s.", filename,
-	     bfd_errmsg (bfd_get_error ()));
-    }
-
-  /* Sum the sizes of the various sections that compose debug info. */
-
-  /* This contains non-DOC information. */
-  sect = bfd_get_section_by_name (abfd, "$DEBUG$");
-  if (sect)
-    st_size += (LONGEST) bfd_section_size (abfd, sect);
-
-  /* This contains DOC information. */
-  sect = bfd_get_section_by_name (abfd, "$PINFO$");
-  if (sect)
-    st_size += (LONGEST) bfd_section_size (abfd, sect);
-
-  bfd_close (abfd);	/* This also closes desc */
-  free (filename);
-
-  /* Unfortunately, just summing the sizes of various debug info
-     sections isn't a very accurate measurement of how much heap
-     space the debugger will need to hold them.  It also doesn't
-     account for space needed by linker (aka "minimal") symbols.
-
-     Anecdotal evidence suggests that just summing the sizes of
-     debug-info-related sections understates the heap space needed
-     to represent it internally by about an order of magnitude.
-
-     Since it's not exactly brain surgery we're doing here, rather
-     than attempt to more accurately measure the size of a shlib's
-     symbol table in GDB's heap, we'll just apply a 10x fudge-
-     factor to the debug info sections' size-sum.  No, this doesn't
-     account for minimal symbols in non-debuggable shlibs.  But it
-     all roughly washes out in the end.
-     */
-  return st_size * (LONGEST) 10;
-}
-
-
-static void
-som_solib_add_solib_objfile (so, name, from_tty, text_addr)
-  struct so_list *  so;
-  char *  name;
-  int  from_tty;
-  CORE_ADDR  text_addr;
-{
-  obj_private_data_t *obj_private;
-  
-  so->objfile = symbol_file_add (name, from_tty, text_addr, 0, 0, 0, 0, 1);
-  so->abfd = so->objfile->obfd;
-
-  /* Mark this as a shared library and save private data.
-   */
-  so->objfile->flags |= OBJF_SHARED;
-
-  if( so->objfile->obj_private == NULL )
-    {
-      obj_private = (obj_private_data_t *)
-                        obstack_alloc( &so->objfile->psymbol_obstack,
-                                       sizeof( obj_private_data_t ));
-      obj_private->unwind_info = NULL;
-      obj_private->so_info     = NULL;
-      so->objfile->obj_private = (PTR) obj_private;
-   }
-
-  obj_private = (obj_private_data_t *) so->objfile->obj_private;
-  obj_private->so_info = so;
-
-  if (!bfd_check_format (so->abfd, bfd_object))
-    {
-      error ("\"%s\": not in executable format: %s.",
-             name, bfd_errmsg (bfd_get_error ()));
-    }
-}
-
-
-static void
-som_solib_load_symbols (so, name, from_tty, text_addr, target)
-  struct so_list *  so;
-  char *  name;
-  int  from_tty;
-  CORE_ADDR  text_addr;
-  struct target_ops *  target;
-{
-  struct section_table *  p;
-  int  status;
-  char  buf[4];
-  CORE_ADDR  presumed_data_start;
-
-#ifdef SOLIB_DEBUG
-  printf( "--Adding symbols for shared library \"%s\"\n", name );
-#endif
-
-  som_solib_add_solib_objfile (so, name, from_tty, text_addr);
-
-  /* Now we need to build a section table for this library since
-     we might be debugging a core file from a dynamically linked
-     executable in which the libraries were not privately mapped.  */
-  if (build_section_table (so->abfd,
-                           &so->sections,
-                           &so->sections_end))
-    {
-      error ("Unable to build section table for shared library\n.");
-      return;
-    }
-
-  /* Relocate all the sections based on where they got loaded.  */
-  for (p = so->sections; p < so->sections_end; p++)
-    {
-      if (p->the_bfd_section->flags & SEC_CODE)
-        {
-          p->addr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_TEXT);
-          p->endaddr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_TEXT);
-        }
-      else if (p->the_bfd_section->flags & SEC_DATA)
-        {
-          p->addr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_DATA);
-          p->endaddr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_DATA);
-        }
-    }
-
-  /* Now see if we need to map in the text and data for this shared
-     library (for example debugging a core file which does not use
-     private shared libraries.). 
-
-     Carefully peek at the first text address in the library.  If the
-     read succeeds, then the libraries were privately mapped and were
-     included in the core dump file.
-
-     If the peek failed, then the libraries were not privately mapped
-     and are not in the core file, we'll have to read them in ourselves.  */
-  status = target_read_memory (text_addr, buf, 4);
-  if (status != 0)
-    {
-      int old, new;
-      int update_coreops;
-      int update_execops;
-
-      /* We must update the to_sections field in the core_ops structure
-         here, otherwise we dereference a potential dangling pointer
-         for each call to target_read/write_memory within this routine.  */
-      update_coreops = core_ops.to_sections == target->to_sections;
-
-      /* Ditto exec_ops (this was a bug).
-       */
-      update_execops = exec_ops.to_sections == target->to_sections;
-
-      new = so->sections_end - so->sections;
-      /* Add sections from the shared library to the core target.  */
-      if (target->to_sections)
-        {
-          old = target->to_sections_end - target->to_sections;
-          target->to_sections = (struct section_table *)
-            xrealloc ((char *)target->to_sections,
-                      ((sizeof (struct section_table)) * (old + new)));
-        }
-      else
-        {
-          old = 0;
-          target->to_sections = (struct section_table *)
-            xmalloc ((sizeof (struct section_table)) * new);
-        }
-      target->to_sections_end = (target->to_sections + old + new);
-
-      /* Update the to_sections field in the core_ops structure
-         if needed, ditto exec_ops.  */
-      if (update_coreops)
-        {
-          core_ops.to_sections = target->to_sections;
-          core_ops.to_sections_end = target->to_sections_end;
-        }
-
-      if (update_execops)
-        {
-          exec_ops.to_sections = target->to_sections;
-          exec_ops.to_sections_end = target->to_sections_end;
-        }
-
-      /* Copy over the old data before it gets clobbered.  */
-      memcpy ((char *)(target->to_sections + old),
-              so->sections,
-              ((sizeof (struct section_table)) * new));
-    }
-}
-
-
-/* Add symbols from shared libraries into the symtab list, unless the
-   size threshold (specified by auto_solib_add, in megabytes) would
-   be exceeded.  */
-
-void
-som_solib_add (arg_string, from_tty, target)
-     char *arg_string;
-     int from_tty;
-     struct target_ops *target;
-{
-  struct minimal_symbol *msymbol;
-  struct so_list *so_list_tail;
-  CORE_ADDR addr;
-  asection *shlib_info;
-  int status;
-  unsigned int dld_flags;
-  char buf[4], *re_err;
-  int  threshold_warning_given = 0;
-
-  /* First validate our arguments.  */
-  if ((re_err = re_comp (arg_string ? arg_string : ".")) != NULL)
-    {
-      error ("Invalid regexp: %s", re_err);
-    }
-
-  /* If we're debugging a core file, or have attached to a running
-     process, then som_solib_create_inferior_hook will not have been
-     called.
-
-     We need to first determine if we're dealing with a dynamically
-     linked executable.  If not, then return without an error or warning.
-
-     We also need to examine __dld_flags to determine if the shared library
-     list is valid and to determine if the libraries have been privately
-     mapped.  */
-  if (symfile_objfile == NULL)
-    return;
-
-  /* First see if the objfile was dynamically linked.  */
-  shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
-  if (!shlib_info)
-    return;
-
-  /* It's got a $SHLIB_INFO$ section, make sure it's not empty.  */
-  if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
-    return;
-
-  msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
-  if (msymbol == NULL)
-    {
-      error ("Unable to find __dld_flags symbol in object file.\n");
-      return;
-    }
-
-  addr = SYMBOL_VALUE_ADDRESS (msymbol);
-  /* Read the current contents.  */
-  status = target_read_memory (addr, buf, 4);
-  if (status != 0)
-    {
-      error ("Unable to read __dld_flags\n");
-      return;
-    }
-  dld_flags = extract_unsigned_integer (buf, 4);
-
-  /* __dld_list may not be valid.  If not, then we punt, warning the user if
-     we were called as a result of the add-symfile command.
-     */
-  if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
-    {
-      if (from_tty)
-        error ("__dld_list is not valid according to __dld_flags.\n");
-      return;
-    }
-
-  /* If the libraries were not mapped private, warn the user.  */
-  if ((dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
-    warning ("The shared libraries were not privately mapped; setting a\nbreakpoint in a shared library will not work until you rerun the program.\n");
-
-  msymbol = lookup_minimal_symbol ("__dld_list", NULL, NULL);
-  if (!msymbol)
-    {
-      /* Older crt0.o files (hpux8) don't have __dld_list as a symbol,
-	 but the data is still available if you know where to look.  */
-      msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
-      if (!msymbol)
-	{
-	  error ("Unable to find dynamic library list.\n");
-	  return;
-	}
-      addr = SYMBOL_VALUE_ADDRESS (msymbol) - 8;
-    }
-  else
-    addr = SYMBOL_VALUE_ADDRESS (msymbol);
-
-  status = target_read_memory (addr, buf, 4);
-  if (status != 0)
-    {
-      error ("Unable to find dynamic library list.\n");
-      return;
-    }
-
-  addr = extract_unsigned_integer (buf, 4);
-
-  /* If addr is zero, then we're using an old dynamic loader which
-     doesn't maintain __dld_list.  We'll have to use a completely
-     different approach to get shared library information.  */
-  if (addr == 0)
-    goto old_dld;
-
-  /* Using the information in __dld_list is the preferred method
-     to get at shared library information.  It doesn't depend on
-     any functions in /opt/langtools/lib/end.o and has a chance of working
-     with hpux10 when it is released.  */
-  status = target_read_memory (addr, buf, 4);
-  if (status != 0)
-    {
-      error ("Unable to find dynamic library list.\n");
-      return;
-    }
-
-  /* addr now holds the address of the first entry in the dynamic
-     library list.  */
-  addr = extract_unsigned_integer (buf, 4);
-
-  /* Now that we have a pointer to the dynamic library list, walk
-     through it and add the symbols for each library.  */
-
-  so_list_tail = so_list_head;
-  /* Find the end of the list of shared objects.  */
-  while (so_list_tail && so_list_tail->next)
-    so_list_tail = so_list_tail->next;
-
-#ifdef SOLIB_DEBUG
-  printf( "--About to read shared library list data\n" );
-#endif
-
-  /* "addr" will always point to the base of the
-   * current data entry describing the current
-   * shared library.
-   */
-  while (1)
-    {
-      CORE_ADDR name_addr, text_addr;
-      unsigned int name_len;
-      char *name;
-      struct so_list *new_so;
-      struct so_list *so_list = so_list_head;
-      struct stat statbuf;
-      LONGEST  st_size;
-      int  is_main_program;
-
-      if (addr == 0)
-	break;
-
-      /* Get a pointer to the name of this library.  */
-      status = target_read_memory (addr, buf, 4);
-      if (status != 0)
-	goto err;
-
-      name_addr = extract_unsigned_integer (buf, 4);
-      name_len = 0;
-      while (1)
-	{
-	  target_read_memory (name_addr + name_len, buf, 1);
-	  if (status != 0)
-	    goto err;
-
-	  name_len++;
-	  if (*buf == '\0')
-	    break;
-	}
-      name = alloca (name_len);
-      status = target_read_memory (name_addr, name, name_len);
-      if (status != 0)
-	goto err;
-
-      /* See if we've already loaded something with this name.  */
-      while (so_list)
-	{
-	  if (!strcmp (so_list->som_solib.name, name))
-	    break;
-	  so_list = so_list->next;
-	}
-
-      /* See if the file exists.  If not, give a warning, but don't
-	 die.  */
-      status = stat (name, &statbuf);
-      if (status == -1)
-	{
-	  warning ("Can't find file %s referenced in dld_list.", name);
-
-	  status = target_read_memory (addr + 36, buf, 4);
-	  if (status != 0)
-	    goto err;
-
-	  addr = (CORE_ADDR) extract_unsigned_integer (buf, 4);          
-	  continue;
-	}
-
-      /* If we've already loaded this one or it's the main program, skip it.  */
-      is_main_program = (strcmp (name, symfile_objfile->name) == 0);
-      if (so_list || is_main_program)
-	{
-          /* This is the "next" pointer in the strcuture.
-           */
-	  status = target_read_memory (addr + 36, buf, 4);
-	  if (status != 0)
-	    goto err;
-
-	  addr = (CORE_ADDR) extract_unsigned_integer (buf, 4);
-
-          /* Record the main program's symbol table size. */
-          if (is_main_program && !so_list)
-            {
-              st_size = som_solib_sizeof_symbol_table (name);
-              som_solib_total_st_size += st_size;
-            }
-
-          /* Was this a shlib that we noted but didn't load the symbols for?
-             If so, were we invoked this time from the command-line, via
-             a 'sharedlibrary' or 'add-symbol-file' command?  If yes to
-             both, we'd better load the symbols this time.
-             */
-          if (from_tty && so_list && !is_main_program && (so_list->objfile == NULL))
-            som_solib_load_symbols (so_list,
-                                    name,
-                                    from_tty,
-                                    so_list->som_solib.text_addr,
-                                    target);
-
-	  continue;
-	}
-
-      name = obsavestring (name, name_len - 1,
-			   &symfile_objfile->symbol_obstack);
-
-      status = target_read_memory (addr + 8, buf, 4);
-      if (status != 0)
-	goto err;
-
-      text_addr = extract_unsigned_integer (buf, 4);
-
-      new_so = (struct so_list *) xmalloc (sizeof (struct so_list));
-      memset ((char *)new_so, 0, sizeof (struct so_list));
-      if (so_list_head == NULL)
-	{
-	  so_list_head = new_so;
-	  so_list_tail = new_so;
-	}
-      else
-	{
-	  so_list_tail->next = new_so;
-	  so_list_tail = new_so;
-	}
-
-      /* Fill in all the entries in GDB's shared library list.
-       */
-       
-      new_so->solib_addr = addr;
-      new_so->som_solib.name = name;
-      status = target_read_memory (addr + 4, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.struct_version = extract_unsigned_integer (buf + 3, 1);
-      new_so->som_solib.bind_mode = extract_unsigned_integer (buf + 2, 1);
-        /* Following is "high water mark", highest version number
-         * seen, rather than plain version number.
-         */
-      new_so->som_solib.library_version = extract_unsigned_integer (buf, 2);
-      new_so->som_solib.text_addr = text_addr;
-
-        /* Q: What about longword at "addr + 8"?
-         * A: It's read above, out of order, into "text_addr".
-         */
-
-      status = target_read_memory (addr + 12, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.text_link_addr = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 16, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.text_end = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 20, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.data_start = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 24, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.bss_start = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 28, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.data_end = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 32, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.got_value = extract_unsigned_integer (buf, 4);
-
-      status = target_read_memory (addr + 36, buf, 4);
-      if (status != 0)
-	goto err;
-
-      new_so->som_solib.next = (void *)extract_unsigned_integer (buf, 4);
-
-      /* Note that we don't re-set "addr" to the next pointer
-       * until after we've read the trailing data.
-       */
-
-      status = target_read_memory (addr + 40, buf, 4);
-      new_so->som_solib.tsd_start_addr = extract_unsigned_integer (buf, 4);
-      if (status != 0)
-        goto err;
-
-      /* Now indirect via that value!
-       */
-      status = target_read_memory (new_so->som_solib.tsd_start_addr, buf, 4);
-      new_so->som_solib.tsd_start_addr = extract_unsigned_integer (buf, 4);
-      if (status != 0)
-        goto err;
-#ifdef SOLIB_DEBUG
-      printf( "\n+ library \"%s\" is described at 0x%x\n", name, addr );
-      printf( "  'version' is %d\n",          new_so->som_solib.struct_version );
-      printf( "  'bind_mode' is %d\n",        new_so->som_solib.bind_mode );
-      printf( "  'library_version' is %d\n",  new_so->som_solib.library_version );
-      printf( "  'text_addr' is 0x%x\n",      new_so->som_solib.text_addr );
-      printf( "  'text_link_addr' is 0x%x\n", new_so->som_solib.text_link_addr );
-      printf( "  'text_end' is 0x%x\n",       new_so->som_solib.text_end );
-      printf( "  'data_start' is 0x%x\n",     new_so->som_solib.data_start );
-      printf( "  'bss_start' is 0x%x\n",      new_so->som_solib.bss_start );
-      printf( "  'data_end' is 0x%x\n",       new_so->som_solib.data_end );
-      printf( "  'got_value' is %x\n",        new_so->som_solib.got_value );
-      printf( "  'next' is 0x%x\n",           new_so->som_solib.next );
-      printf( "  'tsd_start_addr' is 0x%x\n", new_so->som_solib.tsd_start_addr );
-#endif
-
-      /* Go on to the next shared library descriptor.
-       */
-      addr = (CORE_ADDR)new_so->som_solib.next;
-
-
-
-      /* At this point, we have essentially hooked the shlib into the
-         "info share" command.  However, we haven't yet loaded its
-         symbol table.  We must now decide whether we ought to, i.e.,
-         whether doing so would exceed the symbol table size threshold.
-
-         If the threshold has just now been exceeded, then we'll issue
-         a warning message (which explains how to load symbols manually,
-         if the user so desires).
-
-         If the threshold has just now or previously been exceeded,
-         we'll just add the shlib to the list of object files, but won't
-         actually load its symbols.  (This is more useful than it might
-         sound, for it allows us to e.g., still load and use the shlibs'
-         unwind information for stack tracebacks.)
-         */
-
-      /* Note that we DON'T want to preclude the user from using the
-         add-symbol-file command!  Thus, we only worry about the threshold
-         when we're invoked for other reasons.
-         */
-      st_size = som_solib_sizeof_symbol_table (name);
-      som_solib_st_size_threshold_exceeded =
-        !from_tty &&
-        ((st_size + som_solib_total_st_size) > (auto_solib_add * (LONGEST)1000000));
-
-      if (som_solib_st_size_threshold_exceeded)
-        {
-          if (! threshold_warning_given)
-            warning ("Symbols for some libraries have not been loaded, because\ndoing so would exceed the size threshold specified by auto-solib-add.\nTo manually load symbols, use the 'sharedlibrary' command.\nTo raise the threshold, set auto-solib-add to a larger value and rerun\nthe program.\n");
-          threshold_warning_given = 1;
-
-          /* We'll still make note of this shlib, even if we don't
-             read its symbols.  This allows us to use its unwind
-             information well enough to know how to e.g., correctly
-             do a traceback from a PC within the shlib, even if we
-             can't symbolize those PCs...
-             */
-          som_solib_add_solib_objfile (new_so, name, from_tty, text_addr);
-          continue;
-        }
-
-      som_solib_total_st_size += st_size;
-
-      /* This fills in new_so->objfile, among others. */
-      som_solib_load_symbols (new_so, name, from_tty, text_addr, target);
-    }
-
-#ifdef SOLIB_DEBUG
-    printf( "--Done reading shared library data\n" );
-#endif
-
-  /* Getting new symbols may change our opinion about what is
-     frameless.  */
-  reinit_frame_cache ();
-  return;
-
-old_dld:
-  error ("Debugging dynamic executables loaded via the hpux8 dld.sl is not supported.\n");
-  return;
-
-err:
-  error ("Error while reading dynamic library list.\n");
-  return;
-}
-
-
-/* This hook gets called just before the first instruction in the
-   inferior process is executed.
-
-   This is our opportunity to set magic flags in the inferior so
-   that GDB can be notified when a shared library is mapped in and
-   to tell the dynamic linker that a private copy of the library is
-   needed (so GDB can set breakpoints in the library).
-
-   __dld_flags is the location of the magic flags; as of this implementation
-   there are 3 flags of interest:
-
-   bit 0 when set indicates that private copies of the libraries are needed
-   bit 1 when set indicates that the callback hook routine is valid
-   bit 2 when set indicates that the dynamic linker should maintain the
-         __dld_list structure when loading/unloading libraries.
-
-   Note that shared libraries are not mapped in at this time, so we have
-   run the inferior until the libraries are mapped in.  Typically this
-   means running until the "_start" is called.  */
-
-void
-som_solib_create_inferior_hook()
-{
-  struct minimal_symbol *msymbol;
-  unsigned int dld_flags, status, have_endo;
-  asection *shlib_info;
-  char buf[4];
-  struct objfile *objfile;
-  CORE_ADDR anaddr;
-
-  /* First, remove all the solib event breakpoints.  Their addresses
-     may have changed since the last time we ran the program.  */
-  remove_solib_event_breakpoints ();
-
-  if (symfile_objfile == NULL)
-    return; 
-
-  /* First see if the objfile was dynamically linked.  */
-  shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
-  if (!shlib_info)
-    return;
-
-  /* It's got a $SHLIB_INFO$ section, make sure it's not empty.  */
-  if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
-    return;
-
-  have_endo = 0;
-  /* Slam the pid of the process into __d_pid; failing is only a warning!  */
-  msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile);
-  if (msymbol == NULL)
-    {
-      warning ("Unable to find __d_pid symbol in object file.");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      goto keep_going;
-    }
-
-  anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-  store_unsigned_integer (buf, 4, inferior_pid);
-  status = target_write_memory (anaddr, buf, 4);
-  if (status != 0)
-    {
-      warning ("Unable to write __d_pid");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      goto keep_going;
-    }
-
-  /* Get the value of _DLD_HOOK (an export stub) and put it in __dld_hook;
-     This will force the dynamic linker to call __d_trap when significant
-     events occur.
-
-     Note that the above is the pre-HP-UX 9.0 behaviour.  At 9.0 and above,
-     the dld provides an export stub named "__d_trap" as well as the
-     function named "__d_trap" itself, but doesn't provide "_DLD_HOOK".
-     We'll look first for the old flavor and then the new.
-     */
-  msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
-  if (msymbol == NULL)
-      msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
-  if (msymbol == NULL)
-    {
-      warning ("Unable to find _DLD_HOOK symbol in object file.");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      goto keep_going;
-    }
-  anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-  dld_cache.hook.address = anaddr;
-
-  /* Grrr, this might not be an export symbol!  We have to find the
-     export stub.  */
-  ALL_OBJFILES (objfile)
-    {
-      struct unwind_table_entry *u;
-      struct minimal_symbol *msymbol2;
-
-      /* What a crock.  */
-      msymbol2 = lookup_minimal_symbol_solib_trampoline (SYMBOL_NAME (msymbol),
-							 NULL, objfile);
-      /* Found a symbol with the right name.  */
-      if (msymbol2)
-	{
-	  struct unwind_table_entry *u;
-	  /* It must be a shared library trampoline.  */
-	  if (SYMBOL_TYPE (msymbol2) != mst_solib_trampoline)
-	    continue;
-
-	  /* It must also be an export stub.  */
-	  u = find_unwind_entry (SYMBOL_VALUE (msymbol2));
-	  if (!u || u->stub_unwind.stub_type != EXPORT)
-	    continue;
-
-	  /* OK.  Looks like the correct import stub.  */
-	  anaddr = SYMBOL_VALUE (msymbol2);
-          dld_cache.hook_stub.address = anaddr;
-	}
-    }
-  store_unsigned_integer (buf, 4, anaddr);
-
-  msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
-  if (msymbol == NULL)
-    {
-      warning ("Unable to find __dld_hook symbol in object file.");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      goto keep_going;
-    }
-  anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-  status = target_write_memory (anaddr, buf, 4);
-  
-  /* Now set a shlib_event breakpoint at __d_trap so we can track
-     significant shared library events.  */
-  msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
-  if (msymbol == NULL)
-    {
-      warning ("Unable to find __dld_d_trap symbol in object file.");
-      warning ("Suggest linking with /opt/langtools/lib/end.o.");
-      warning ("GDB will be unable to track shl_load/shl_unload calls");
-      goto keep_going;
-    }
-  create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
-
-  /* We have all the support usually found in end.o, so we can track
-     shl_load and shl_unload calls.  */
-  have_endo = 1;
-
-keep_going:
-
-  /* Get the address of __dld_flags, if no such symbol exists, then we can
-     not debug the shared code.  */
-  msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
-  if (msymbol == NULL)
-    {
-      error ("Unable to find __dld_flags symbol in object file.\n");
-    }
-
-  anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-
-  /* Read the current contents.  */
-  status = target_read_memory (anaddr, buf, 4);
-  if (status != 0)
-    {
-      error ("Unable to read __dld_flags\n");
-    }
-  dld_flags = extract_unsigned_integer (buf, 4);
-
-  /* Turn on the flags we care about.  */
-  dld_flags |= DLD_FLAGS_MAPPRIVATE;
-  if (have_endo)
-    dld_flags |= DLD_FLAGS_HOOKVALID;
-  store_unsigned_integer (buf, 4, dld_flags);
-  status = target_write_memory (anaddr, buf, 4);
-  if (status != 0)
-    {
-      error ("Unable to write __dld_flags\n");
-    }
-
-  /* Now find the address of _start and set a breakpoint there. 
-     We still need this code for two reasons:
-
-	* Not all sites have /opt/langtools/lib/end.o, so it's not always
-	possible to track the dynamic linker's events.
-
-	* At this time no events are triggered for shared libraries
-	loaded at startup time (what a crock).  */
-	
-  msymbol = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
-  if (msymbol == NULL)
-    {
-      error ("Unable to find _start symbol in object file.\n");
-    }
-
-  anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-
-  /* Make the breakpoint at "_start" a shared library event breakpoint.  */
-  create_solib_event_breakpoint (anaddr);
-
-  /* Wipe out all knowledge of old shared libraries since their
-     mapping can change from one exec to another!  */
-  while (so_list_head)
-    {
-      struct so_list *temp;
-
-      temp = so_list_head;
-      free (so_list_head);
-      so_list_head = temp->next;
-    }
-  clear_symtab_users ();
-}
-
-
-static void
-reset_inferior_pid (saved_inferior_pid)
-  int  saved_inferior_pid;
-{
-  inferior_pid = saved_inferior_pid;
-}
-
-
-/* This operation removes the "hook" between GDB and the dynamic linker,
-   which causes the dld to notify GDB of shared library events.
-
-   After this operation completes, the dld will no longer notify GDB of
-   shared library events.  To resume notifications, GDB must call
-   som_solib_create_inferior_hook.
-
-   This operation does not remove any knowledge of shared libraries which
-   GDB may already have been notified of.
-   */
-void
-som_solib_remove_inferior_hook (pid)
-  int  pid;
-{
-  CORE_ADDR  addr;
-  struct minimal_symbol *  msymbol;
-  int  status;
-  char  dld_flags_buffer [TARGET_INT_BIT/TARGET_CHAR_BIT];
-  unsigned int  dld_flags_value;
-  int  saved_inferior_pid = inferior_pid;
-  struct cleanup *  old_cleanups = make_cleanup (reset_inferior_pid, saved_inferior_pid);
-
-  /* Ensure that we're really operating on the specified process. */
-  inferior_pid = pid;
-
-  /* We won't bother to remove the solib breakpoints from this process.
-
-     In fact, on PA64 the breakpoint is hard-coded into the dld callback,
-     and thus we're not supposed to remove it.
-
-     Rather, we'll merely clear the dld_flags bit that enables callbacks.
-     */
-  msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
-
-  addr = SYMBOL_VALUE_ADDRESS (msymbol);
-  status = target_read_memory (addr, dld_flags_buffer, TARGET_INT_BIT/TARGET_CHAR_BIT);
-
-  dld_flags_value = extract_unsigned_integer (dld_flags_buffer,
-                                              sizeof (dld_flags_value));
-
-  dld_flags_value &= ~DLD_FLAGS_HOOKVALID;
-  store_unsigned_integer (dld_flags_buffer,
-                          sizeof (dld_flags_value),
-                          dld_flags_value);
-  status = target_write_memory (addr, dld_flags_buffer, TARGET_INT_BIT/TARGET_CHAR_BIT);
-
-  do_cleanups (old_cleanups);
-}
-
-
-/* This function creates a breakpoint on the dynamic linker hook, which
-   is called when e.g., a shl_load or shl_unload call is made.  This
-   breakpoint will only trigger when a shl_load call is made.
-
-   If filename is NULL, then loads of any dll will be caught.  Else,
-   only loads of the file whose pathname is the string contained by
-   filename will be caught.
-
-   Undefined behaviour is guaranteed if this function is called before
-   som_solib_create_inferior_hook.
-   */
-void
-som_solib_create_catch_load_hook (pid, tempflag, filename, cond_string)
-  int  pid;
-  int  tempflag;
-  char *  filename;
-  char *  cond_string;
-{
-  create_solib_load_event_breakpoint ("__d_trap", tempflag, filename, cond_string);
-}
-
-/* This function creates a breakpoint on the dynamic linker hook, which
-   is called when e.g., a shl_load or shl_unload call is made.  This
-   breakpoint will only trigger when a shl_unload call is made.
-
-   If filename is NULL, then unloads of any dll will be caught.  Else,
-   only unloads of the file whose pathname is the string contained by
-   filename will be caught.
-
-   Undefined behaviour is guaranteed if this function is called before
-   som_solib_create_inferior_hook.
-   */
-void
-som_solib_create_catch_unload_hook (pid, tempflag, filename, cond_string)
-  int  pid;
-  int  tempflag;
-  char *  filename;
-  char *  cond_string;
-{
-  create_solib_unload_event_breakpoint ("__d_trap", tempflag, filename, cond_string);
-}
-
-int
-som_solib_have_load_event (pid)
-  int  pid;
-{
-  CORE_ADDR  event_kind;
-
-  event_kind = read_register (ARG0_REGNUM);
-  return (event_kind == SHL_LOAD);
-}
-
-int
-som_solib_have_unload_event (pid)
-  int  pid;
-{
-  CORE_ADDR  event_kind;
-
-  event_kind = read_register (ARG0_REGNUM);
-  return (event_kind == SHL_UNLOAD);
-}
-
-static char *
-som_solib_library_pathname (pid)
-  int  pid;
-{
-  CORE_ADDR  dll_handle_address;
-  CORE_ADDR  dll_pathname_address;
-  struct som_solib_mapped_entry  dll_descriptor;
-  char *  p;
-  static char  dll_pathname [1024];
-
-  /* Read the descriptor of this newly-loaded library. */
-  dll_handle_address = read_register (ARG1_REGNUM);
-  read_memory (dll_handle_address, (char *) &dll_descriptor, sizeof (dll_descriptor));
-
-  /* We can find a pointer to the dll's pathname within the descriptor. */
-  dll_pathname_address = (CORE_ADDR) dll_descriptor.name;
-  
-  /* Read the pathname, one byte at a time. */
-  p = dll_pathname;
-  for (;;)
-    {
-      char  b;
-      read_memory (dll_pathname_address++, (char *) &b, 1);
-      *p++ = b;
-      if (b == '\0')
-        break;
-    }
-
-  return dll_pathname;
-}
-
-char *
-som_solib_loaded_library_pathname (pid)
-  int  pid;
-{
-  if (! som_solib_have_load_event (pid))
-    error ("Must have a load event to use this query");
-
-  return som_solib_library_pathname (pid);
-}
-
-char *
-som_solib_unloaded_library_pathname (pid)
-  int  pid;
-{
-  if (! som_solib_have_unload_event (pid))
-    error ("Must have an unload event to use this query");
-
-  return som_solib_library_pathname (pid);
-}
-
-static void
-som_solib_desire_dynamic_linker_symbols ()
-{
-  struct objfile *objfile;
-  struct unwind_table_entry *u;
-  struct minimal_symbol *  dld_msymbol;
-
-  /* Do we already know the value of these symbols?  If so, then
-     we've no work to do.
-
-     (If you add clauses to this test, be sure to likewise update the
-     test within the loop.)
-     */
-  if (dld_cache.is_valid)
-    return;
-
-  ALL_OBJFILES (objfile)
-    {
-      dld_msymbol = lookup_minimal_symbol ("shl_load", NULL, objfile);
-      if (dld_msymbol != NULL)
-        {
-          dld_cache.load.address = SYMBOL_VALUE (dld_msymbol);
-          dld_cache.load.unwind = find_unwind_entry (dld_cache.load.address);
-        }
-
-      dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_load",
-                                                            NULL,
-                                                            objfile);
-      if (dld_msymbol != NULL)
-        {
-          if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
-            {
-              u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
-              if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
-                {
-                  dld_cache.load_stub.address = SYMBOL_VALUE (dld_msymbol);
-                  dld_cache.load_stub.unwind = u;
-                }
-            }
-        }
-
-      dld_msymbol = lookup_minimal_symbol ("shl_unload", NULL, objfile);
-      if (dld_msymbol != NULL)
-        {
-          dld_cache.unload.address = SYMBOL_VALUE (dld_msymbol);
-          dld_cache.unload.unwind = find_unwind_entry (dld_cache.unload.address);
-
-          /* ??rehrauer: I'm not sure exactly what this is, but it appears
-             that on some HPUX 10.x versions, there's two unwind regions to
-             cover the body of "shl_unload", the second being 4 bytes past
-             the end of the first.  This is a large hack to handle that
-             case, but since I don't seem to have any legitimate way to
-             look for this thing via the symbol table...
-             */
-          if (dld_cache.unload.unwind != NULL)
-            {
-              u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4);
-              if (u != NULL)
-                {
-                  dld_cache.unload2.address = u->region_start;
-                  dld_cache.unload2.unwind = u;
-                }
-            }
-        }
-
-      dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_unload",
-                                                            NULL,
-                                                            objfile);
-      if (dld_msymbol != NULL)
-        {
-          if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
-            {
-              u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
-              if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
-                {
-                  dld_cache.unload_stub.address = SYMBOL_VALUE (dld_msymbol);
-                  dld_cache.unload_stub.unwind = u;
-                }
-            }
-        }
-
-      /* Did we find everything we were looking for?  If so, stop. */
-      if ((dld_cache.load.address != NULL) && (dld_cache.load_stub.address != NULL)
-          && (dld_cache.unload.address != NULL) && (dld_cache.unload_stub.address != NULL))
-        {
-          dld_cache.is_valid = 1;
-          break;
-        }
-    }
-
-  dld_cache.hook.unwind = find_unwind_entry (dld_cache.hook.address);
-  dld_cache.hook_stub.unwind = find_unwind_entry (dld_cache.hook_stub.address);
-
-  /* We're prepared not to find some of these symbols, which is why
-     this function is a "desire" operation, and not a "require".
-     */
-}
-
-int
-som_solib_in_dynamic_linker (pid, pc)
-  int  pid;
-  CORE_ADDR  pc;
-{
-  struct unwind_table_entry *  u_pc;
-
-  /* Are we in the dld itself?
-
-     ??rehrauer: Large hack -- We'll assume that any address in a
-     shared text region is the dld's text.  This would obviously
-     fall down if the user attached to a process, whose shlibs
-     weren't mapped to a (writeable) private region.  However, in
-     that case the debugger probably isn't able to set the fundamental
-     breakpoint in the dld callback anyways, so this hack should be
-     safe.
-     */
-  if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000)
-    return 1;
-
-  /* Cache the address of some symbols that are part of the dynamic
-     linker, if not already known.
-     */
-  som_solib_desire_dynamic_linker_symbols ();
-
-  /* Are we in the dld callback?  Or its export stub? */
-  u_pc = find_unwind_entry (pc);
-  if (u_pc == NULL)
-    return 0;
-
-  if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind))
-    return 1;
-
-  /* Or the interface of the dld (i.e., "shl_load" or friends)? */
-  if ((u_pc == dld_cache.load.unwind)
-      || (u_pc == dld_cache.unload.unwind)
-      || (u_pc == dld_cache.unload2.unwind)
-      || (u_pc == dld_cache.load_stub.unwind)
-      || (u_pc == dld_cache.unload_stub.unwind))
-    return 1;
-
-  /* Apparently this address isn't part of the dld's text. */
-  return 0;
-}
-
-
-/* Return the GOT value for the shared library in which ADDR belongs.  If
-   ADDR isn't in any known shared library, return zero.  */
-
-CORE_ADDR
-som_solib_get_got_by_pc (addr)
-     CORE_ADDR addr;
-{
-  struct so_list *so_list = so_list_head;
-  CORE_ADDR got_value = 0;
-
-  while (so_list)
-    {
-      if (so_list->som_solib.text_addr <= addr
-	  && so_list->som_solib.text_end > addr)
-	{
-	  got_value = so_list->som_solib.got_value;
-	  break;
-	}
-      so_list = so_list->next;
-    }
-  return got_value;
-}
-
-/*  elz:
-   Return the address of the handle of the shared library
-   in which ADDR belongs.  If
-   ADDR isn't in any known shared library, return zero.  */
-/* this function is used in hppa_fix_call_dummy in hppa-tdep.c*/
-
-CORE_ADDR
-som_solib_get_solib_by_pc (addr)
-     CORE_ADDR addr;
-{
-  struct so_list *so_list = so_list_head;
-
-  while (so_list)
-    {
-      if (so_list->som_solib.text_addr <= addr
-	  && so_list->som_solib.text_end > addr)
-        {
-	  break;
-        }
-      so_list = so_list->next;
-    }
-  if (so_list)
-   return so_list->solib_addr;
-  else
-   return 0;
-}
-
-
-int
-som_solib_section_offsets (objfile, offsets)
-     struct objfile *objfile;
-     struct section_offsets *offsets;
-{
-  struct so_list *so_list = so_list_head;
-
-  while (so_list)
-    {
-      /* Oh what a pain!  We need the offsets before so_list->objfile
-	 is valid.  The BFDs will never match.  Make a best guess.  */
-      if (strstr (objfile->name, so_list->som_solib.name))
-	{
-	  asection *private_section;
-
-	  /* The text offset is easy.  */
-	  ANOFFSET (offsets, SECT_OFF_TEXT)
-	    = (so_list->som_solib.text_addr
-	       - so_list->som_solib.text_link_addr);
-	  ANOFFSET (offsets, SECT_OFF_RODATA)
-	    = ANOFFSET (offsets, SECT_OFF_TEXT);
-
-	  /* We should look at presumed_dp in the SOM header, but
-	     that's not easily available.  This should be OK though.  */
-	  private_section = bfd_get_section_by_name (objfile->obfd,
-						     "$PRIVATE$");
-	  if (!private_section)
-	    {
-	      warning ("Unable to find $PRIVATE$ in shared library!");
-	      ANOFFSET (offsets, SECT_OFF_DATA) = 0;
-	      ANOFFSET (offsets, SECT_OFF_BSS) = 0;
-	      return 1;
-	    }
-	  ANOFFSET (offsets, SECT_OFF_DATA)
-	    = (so_list->som_solib.data_start - private_section->vma);
-	  ANOFFSET (offsets, SECT_OFF_BSS)
-	    = ANOFFSET (offsets, SECT_OFF_DATA);
-	  return 1;
-	}
-      so_list = so_list->next;
-    }
-  return 0;
-}
-
-/* Dump information about all the currently loaded shared libraries.  */
-
-static void
-som_sharedlibrary_info_command (ignore, from_tty)
-     char *ignore;
-     int from_tty;
-{
-  struct so_list *so_list = so_list_head;
-
-  if (exec_bfd == NULL)
-    {
-      printf_unfiltered ("no exec file.\n");
-      return;
-    }
-
-  if (so_list == NULL)
-    {
-      printf_unfiltered ("No shared libraries loaded at this time.\n");
-      return;
-    }
-
-  printf_unfiltered ("Shared Object Libraries\n");
-  printf_unfiltered ("    %-12s%-12s%-12s%-12s%-12s%-12s\n",
-		     "  flags", "  tstart", "   tend", "  dstart", "   dend", "   dlt");
-  while (so_list)
-    {
-      unsigned int flags;
-
-      flags = so_list->som_solib.struct_version << 24;
-      flags |= so_list->som_solib.bind_mode << 16;
-      flags |= so_list->som_solib.library_version;
-      printf_unfiltered ("%s", so_list->som_solib.name);
-      if (so_list->objfile == NULL)
-        printf_unfiltered ("  (symbols not loaded)");
-      printf_unfiltered ("\n");
-      printf_unfiltered ("    %-12s", local_hex_string_custom (flags, "08l"));
-      printf_unfiltered ("%-12s",
-	      local_hex_string_custom (so_list->som_solib.text_addr, "08l"));
-      printf_unfiltered ("%-12s",
-	      local_hex_string_custom (so_list->som_solib.text_end, "08l"));
-      printf_unfiltered ("%-12s",
-	      local_hex_string_custom (so_list->som_solib.data_start, "08l"));
-      printf_unfiltered ("%-12s",
-	      local_hex_string_custom (so_list->som_solib.data_end, "08l"));
-      printf_unfiltered ("%-12s\n",
-	      local_hex_string_custom (so_list->som_solib.got_value, "08l"));
-      so_list = so_list->next;
-    }
-}
-
-static void
-som_solib_sharedlibrary_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  dont_repeat ();
-  som_solib_add (args, from_tty, (struct target_ops *) 0);
-}
-
-
-
-char *
-som_solib_address (addr)
-  CORE_ADDR  addr;
-{
-  struct so_list *  so = so_list_head;
-
-  while (so)
-    {
-      /* Is this address within this shlib's text range?  If so,
-         return the shlib's name.
-         */
-      if ((addr >= so->som_solib.text_addr) && (addr <= so->som_solib.text_end))
-        return so->som_solib.name;
-
-      /* Nope, keep looking... */
-      so = so->next;
-    }
-
-  /* No, we couldn't prove that the address is within a shlib. */
-  return NULL;
-}
-
-
-void
-som_solib_restart ()
-{
-  struct so_list *  sl = so_list_head;
-
-  /* Before the shlib info vanishes, use it to disable any breakpoints
-     that may still be active in those shlibs.
-     */
-  disable_breakpoints_in_shlibs (0);
-
-  /* Discard all the shlib descriptors.
-     */
-  while (sl)
-    {
-      struct so_list *  next_sl = sl->next;
-      free (sl);
-      sl = next_sl;
-    }
-  so_list_head = NULL;
-
-  som_solib_total_st_size = (LONGEST) 0;
-  som_solib_st_size_threshold_exceeded = 0;
-
-  dld_cache.is_valid = 0;
-
-  dld_cache.hook.address = 0;
-  dld_cache.hook.unwind = NULL;
-
-  dld_cache.hook_stub.address = 0;
-  dld_cache.hook_stub.unwind = NULL;
-
-  dld_cache.load.address = 0;
-  dld_cache.load.unwind = NULL;
-
-  dld_cache.load_stub.address = 0;
-  dld_cache.load_stub.unwind = NULL;
-
-  dld_cache.unload.address = 0;
-  dld_cache.unload.unwind = NULL;
-
-  dld_cache.unload2.address = 0;
-  dld_cache.unload2.unwind = NULL;
-
-  dld_cache.unload_stub.address = 0;
-  dld_cache.unload_stub.unwind = NULL;
-}
-
-
-
-void
-_initialize_som_solib ()
-{
-  add_com ("sharedlibrary", class_files, som_solib_sharedlibrary_command,
-           "Load shared object library symbols for files matching REGEXP.");
-  add_info ("sharedlibrary", som_sharedlibrary_info_command,
-	    "Status of loaded shared object libraries.");
-  add_show_from_set
-    (add_set_cmd ("auto-solib-add", class_support, var_zinteger,
-		  (char *) &auto_solib_add,
-		  "Set autoloading size threshold (in megabytes) of shared library symbols.\n\
-If nonzero, symbols from all shared object libraries will be loaded\n\
-automatically when the inferior begins execution or when the dynamic linker\n\
-informs gdb that a new library has been loaded, until the symbol table\n\
-of the program and libraries exceeds this threshold.\n\
-Otherwise, symbols must be loaded manually, using `sharedlibrary'.",
-		  &setlist),
-     &showlist);
-
-  /* ??rehrauer: On HP-UX, the kernel parameter MAXDSIZ limits how much
-     data space a process can use.  We ought to be reading MAXDSIZ and
-     setting auto_solib_add to some large fraction of that value.  If
-     not that, we maybe ought to be setting it smaller than the default
-     for MAXDSIZ (that being 64Mb, I believe).  However, [1] this threshold
-     is only crudely approximated rather than actually measured, and [2]
-     50 Mbytes is too small for debugging gdb itself.  Thus, the arbitrary
-     100 figure.
-     */
-  auto_solib_add = 100; /* Megabytes */
-
-  som_solib_restart ();
-}
-
-/* Get some HPUX-specific data from a shared lib.
- */
-CORE_ADDR
-so_lib_thread_start_addr( so )
-    struct so_list *so;
-{
-    return so->som_solib.tsd_start_addr;
-}