Initial creation of sourceware repository

1 files changed, 0 insertions, 845 deletions

diff --git a/gdb/rs6000-nat.c b/gdb/rs6000-nat.c
deleted file mode 100644
index c74a36f..0000000
--- a/gdb/rs6000-nat.c
+++ /dev/null
@@ -1,845 +0,0 @@
-/* IBM RS/6000 native-dependent code for GDB, the GNU debugger.
-   Copyright 1986, 1987, 1989, 1991, 1992, 1994, 1995, 1996, 1997, 1998
-	     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.  */
-
-#include "defs.h"
-#include "inferior.h"
-#include "target.h"
-#include "gdbcore.h"
-#include "xcoffsolib.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "libbfd.h"  /* For bfd_cache_lookup (FIXME) */
-#include "bfd.h"
-#include "gdb-stabs.h"
-
-#include <sys/ptrace.h>
-#include <sys/reg.h>
-
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <sys/user.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-
-#include <a.out.h>
-#include <sys/file.h>
-#include "gdb_stat.h"
-#include <sys/core.h>
-#include <sys/ldr.h>
-
-extern int errno;
-
-extern struct vmap * map_vmap PARAMS ((bfd *bf, bfd *arch));
-
-extern struct target_ops exec_ops;
-
-static void
-vmap_exec PARAMS ((void));
-
-static void
-vmap_ldinfo PARAMS ((struct ld_info *));
-
-static struct vmap *
-add_vmap PARAMS ((struct ld_info *));
-
-static int
-objfile_symbol_add PARAMS ((char *));
-
-static void
-vmap_symtab PARAMS ((struct vmap *));
-
-static void
-fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR));
-
-static void
-exec_one_dummy_insn PARAMS ((void));
-
-extern void
-fixup_breakpoints PARAMS ((CORE_ADDR low, CORE_ADDR high, CORE_ADDR delta));
-
-/* Conversion from gdb-to-system special purpose register numbers.. */
-
-static int special_regs[] = {
-  IAR,				/* PC_REGNUM	*/
-  MSR,				/* PS_REGNUM	*/
-  CR,				/* CR_REGNUM	*/
-  LR,				/* LR_REGNUM	*/
-  CTR,				/* CTR_REGNUM	*/
-  XER,				/* XER_REGNUM   */
-  MQ				/* MQ_REGNUM	*/
-};
-
-void
-fetch_inferior_registers (regno)
-  int regno;
-{
-  int ii;
-  extern char registers[];
-
-  if (regno < 0) {			/* for all registers */
-
-    /* read 32 general purpose registers. */
-
-    for (ii=0; ii < 32; ++ii)
-      *(int*)&registers[REGISTER_BYTE (ii)] = 
-	ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) ii, 0, 0);
-
-    /* read general purpose floating point registers. */
-
-    for (ii=0; ii < 32; ++ii)
-      ptrace (PT_READ_FPR, inferior_pid, 
-	      (PTRACE_ARG3_TYPE) &registers [REGISTER_BYTE (FP0_REGNUM+ii)],
-	      FPR0+ii, 0);
-
-    /* read special registers. */
-    for (ii=0; ii <= LAST_UISA_SP_REGNUM-FIRST_UISA_SP_REGNUM; ++ii)
-      *(int*)&registers[REGISTER_BYTE (FIRST_UISA_SP_REGNUM+ii)] = 
-	ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) special_regs[ii],
-		0, 0);
-
-    registers_fetched ();
-    return;
-  }
-
-  /* else an individual register is addressed. */
-
-  else if (regno < FP0_REGNUM) {		/* a GPR */
-    *(int*)&registers[REGISTER_BYTE (regno)] =
-	ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) regno, 0, 0);
-  }
-  else if (regno <= FPLAST_REGNUM) {		/* a FPR */
-    ptrace (PT_READ_FPR, inferior_pid,
-	    (PTRACE_ARG3_TYPE) &registers [REGISTER_BYTE (regno)],
-	    (regno-FP0_REGNUM+FPR0), 0);
-  }
-  else if (regno <= LAST_UISA_SP_REGNUM) { /* a special register */
-    *(int*)&registers[REGISTER_BYTE (regno)] =
-	ptrace (PT_READ_GPR, inferior_pid,
-		(PTRACE_ARG3_TYPE) special_regs[regno-FIRST_UISA_SP_REGNUM],
-		0, 0);
-  }
-  else
-    fprintf_unfiltered (gdb_stderr, 
-			"gdb error: register no %d not implemented.\n",
-			regno);
-
-  register_valid [regno] = 1;
-}
-
-/* Store our register values back into the inferior.
-   If REGNO is -1, do this for all registers.
-   Otherwise, REGNO specifies which register (so we can save time).  */
-
-void
-store_inferior_registers (regno)
-     int regno;
-{
-  extern char registers[];
-
-  errno = 0;
-
-  if (regno == -1)
-    {			/* for all registers..	*/
-      int ii;
-
-       /* execute one dummy instruction (which is a breakpoint) in inferior
-          process. So give kernel a chance to do internal house keeping.
-	  Otherwise the following ptrace(2) calls will mess up user stack
-	  since kernel will get confused about the bottom of the stack (%sp) */
-
-       exec_one_dummy_insn ();
-
-      /* write general purpose registers first! */
-      for ( ii=GPR0; ii<=GPR31; ++ii)
-	{
-	  ptrace (PT_WRITE_GPR, inferior_pid, (PTRACE_ARG3_TYPE) ii,
-		  *(int*)&registers[REGISTER_BYTE (ii)], 0);
-	  if (errno)
-	    { 
-	      perror ("ptrace write_gpr");
-	      errno = 0;
-	    }
-	}
-
-      /* write floating point registers now. */
-      for ( ii=0; ii < 32; ++ii)
-	{
-	  ptrace (PT_WRITE_FPR, inferior_pid, 
-		  (PTRACE_ARG3_TYPE) &registers[REGISTER_BYTE (FP0_REGNUM+ii)],
-		  FPR0+ii, 0);
-	  if (errno)
-	    {
-	      perror ("ptrace write_fpr");
-	      errno = 0;
-	    }
-	}
-
-      /* write special registers. */
-      for (ii=0; ii <= LAST_UISA_SP_REGNUM-FIRST_UISA_SP_REGNUM; ++ii)
-	{
-	  ptrace (PT_WRITE_GPR, inferior_pid,
-		  (PTRACE_ARG3_TYPE) special_regs[ii],
-		  *(int*)&registers[REGISTER_BYTE (FIRST_UISA_SP_REGNUM+ii)],
-		  0);
-	  if (errno)
-	    {
-	      perror ("ptrace write_gpr");
-	      errno = 0;
-	    }
-	}
-    }
-
-  /* else, a specific register number is given... */
-
-  else if (regno < FP0_REGNUM)			/* a GPR */
-    {
-      ptrace (PT_WRITE_GPR, inferior_pid, (PTRACE_ARG3_TYPE) regno,
-	      *(int*)&registers[REGISTER_BYTE (regno)], 0);
-    }
-
-  else if (regno <= FPLAST_REGNUM)		/* a FPR */
-    {
-      ptrace (PT_WRITE_FPR, inferior_pid, 
-	      (PTRACE_ARG3_TYPE) &registers[REGISTER_BYTE (regno)],
-	      regno - FP0_REGNUM + FPR0, 0);
-    }
-
-  else if (regno <= LAST_UISA_SP_REGNUM) /* a special register */
-    {
-      ptrace (PT_WRITE_GPR, inferior_pid,
-	      (PTRACE_ARG3_TYPE) special_regs [regno-FIRST_UISA_SP_REGNUM],
-	      *(int*)&registers[REGISTER_BYTE (regno)], 0);
-    }
-
-  else
-    fprintf_unfiltered (gdb_stderr,
-			"Gdb error: register no %d not implemented.\n",
-			regno);
-
-  if (errno)
-    {
-      perror ("ptrace write");
-      errno = 0;
-    }
-}
-
-/* Execute one dummy breakpoint instruction.  This way we give the kernel
-   a chance to do some housekeeping and update inferior's internal data,
-   including u_area. */
-
-static void
-exec_one_dummy_insn ()
-{
-#define	DUMMY_INSN_ADDR	(TEXT_SEGMENT_BASE)+0x200
-
-  char shadow_contents[BREAKPOINT_MAX];	/* Stash old bkpt addr contents */
-  int status, pid;
-  CORE_ADDR prev_pc;
-
-  /* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
-     assume that this address will never be executed again by the real
-     code. */
-
-  target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
-
-  errno = 0;
-
-  /* You might think this could be done with a single ptrace call, and
-     you'd be correct for just about every platform I've ever worked
-     on.  However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
-     the inferior never hits the breakpoint (it's also worth noting
-     powerpc-ibm-aix4.1.3 works correctly).  */
-  prev_pc = read_pc ();
-  write_pc (DUMMY_INSN_ADDR);
-  ptrace (PT_CONTINUE, inferior_pid, (PTRACE_ARG3_TYPE)1, 0, 0);
-
-  if (errno)
-    perror ("pt_continue");
-
-  do {
-    pid = wait (&status);
-  } while (pid != inferior_pid);
-    
-  write_pc (prev_pc);
-  target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
-}
-
-static void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
-     char *core_reg_sect;
-     unsigned core_reg_size;
-     int which;
-     CORE_ADDR reg_addr;	/* Unused in this version */
-{
-  /* fetch GPRs and special registers from the first register section
-     in core bfd. */
-  if (which == 0)
-    {
-      /* copy GPRs first. */
-      memcpy (registers, core_reg_sect, 32 * 4);
-
-      /* gdb's internal register template and bfd's register section layout
-	 should share a common include file. FIXMEmgo */
-      /* then comes special registes. They are supposed to be in the same
-	 order in gdb template and bfd `.reg' section. */
-      core_reg_sect += (32 * 4);
-      memcpy (&registers [REGISTER_BYTE (FIRST_UISA_SP_REGNUM)], 
-	      core_reg_sect, 
-	      (LAST_UISA_SP_REGNUM - FIRST_UISA_SP_REGNUM + 1) * 4);
-    }
-
-  /* fetch floating point registers from register section 2 in core bfd. */
-  else if (which == 2)
-    memcpy (&registers [REGISTER_BYTE (FP0_REGNUM)], core_reg_sect, 32 * 8);
-
-  else
-    fprintf_unfiltered 
-      (gdb_stderr, 
-       "Gdb error: unknown parameter to fetch_core_registers().\n");
-}
-
-/* handle symbol translation on vmapping */
-
-static void
-vmap_symtab (vp)
-     register struct vmap *vp;
-{
-  register struct objfile *objfile;
-  struct section_offsets *new_offsets;
-  int i;
-  
-  objfile = vp->objfile;
-  if (objfile == NULL)
-    {
-      /* OK, it's not an objfile we opened ourselves.
-	 Currently, that can only happen with the exec file, so
-	 relocate the symbols for the symfile.  */
-      if (symfile_objfile == NULL)
-	return;
-      objfile = symfile_objfile;
-    }
-
-  new_offsets = alloca
-    (sizeof (struct section_offsets)
-     + sizeof (new_offsets->offsets) * objfile->num_sections);
-
-  for (i = 0; i < objfile->num_sections; ++i)
-    ANOFFSET (new_offsets, i) = ANOFFSET (objfile->section_offsets, i);
-  
-  /* The symbols in the object file are linked to the VMA of the section,
-     relocate them VMA relative.  */
-  ANOFFSET (new_offsets, SECT_OFF_TEXT) = vp->tstart - vp->tvma;
-  ANOFFSET (new_offsets, SECT_OFF_DATA) = vp->dstart - vp->dvma;
-  ANOFFSET (new_offsets, SECT_OFF_BSS) = vp->dstart - vp->dvma;
-
-  objfile_relocate (objfile, new_offsets);
-}
-
-/* Add symbols for an objfile.  */
-
-static int
-objfile_symbol_add (arg)
-     char *arg;
-{
-  struct objfile *obj = (struct objfile *) arg;
-
-  syms_from_objfile (obj, 0, 0, 0);
-  new_symfile_objfile (obj, 0, 0);
-  return 1;
-}
-
-/* Add a new vmap entry based on ldinfo() information.
-
-   If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
-   core file), the caller should set it to -1, and we will open the file.
-
-   Return the vmap new entry.  */
-
-static struct vmap *
-add_vmap (ldi)
-     register struct ld_info *ldi; 
-{
-  bfd *abfd, *last;
-  register char *mem, *objname;
-  struct objfile *obj;
-  struct vmap *vp;
-
-  /* This ldi structure was allocated using alloca() in 
-     xcoff_relocate_symtab(). Now we need to have persistent object 
-     and member names, so we should save them. */
-
-  mem = ldi->ldinfo_filename + strlen (ldi->ldinfo_filename) + 1;
-  mem = savestring (mem, strlen (mem));
-  objname = savestring (ldi->ldinfo_filename, strlen (ldi->ldinfo_filename));
-
-  if (ldi->ldinfo_fd < 0)
-    /* Note that this opens it once for every member; a possible
-       enhancement would be to only open it once for every object.  */
-    abfd = bfd_openr (objname, gnutarget);
-  else
-    abfd = bfd_fdopenr (objname, gnutarget, ldi->ldinfo_fd);
-  if (!abfd)
-    error ("Could not open `%s' as an executable file: %s",
-	   objname, bfd_errmsg (bfd_get_error ()));
-
-  /* make sure we have an object file */
-
-  if (bfd_check_format (abfd, bfd_object))
-    vp = map_vmap (abfd, 0);
-
-  else if (bfd_check_format (abfd, bfd_archive))
-    {
-      last = 0;
-      /* FIXME??? am I tossing BFDs?  bfd? */
-      while ((last = bfd_openr_next_archived_file (abfd, last)))
-	if (STREQ (mem, last->filename))
-	  break;
-
-      if (!last)
-	{
-	  bfd_close (abfd);
-	  /* FIXME -- should be error */
-	  warning ("\"%s\": member \"%s\" missing.", abfd->filename, mem);
-	  return 0;
-	}
-
-      if (!bfd_check_format(last, bfd_object))
-	{
-	  bfd_close (last);	/* XXX???	*/
-	  goto obj_err;
-	}
-
-      vp = map_vmap (last, abfd);
-    }
-  else
-    {
-    obj_err:
-      bfd_close (abfd);
-      error ("\"%s\": not in executable format: %s.",
-	     objname, bfd_errmsg (bfd_get_error ()));
-      /*NOTREACHED*/
-    }
-  obj = allocate_objfile (vp->bfd, 0, 0, 0);
-  vp->objfile = obj;
-
-#ifndef SOLIB_SYMBOLS_MANUAL
-  if (catch_errors (objfile_symbol_add, (char *)obj,
-		    "Error while reading shared library symbols:\n",
-		    RETURN_MASK_ALL))
-    {
-      /* Note this is only done if symbol reading was successful.  */
-      vmap_symtab (vp);
-      vp->loaded = 1;
-    }
-#endif
-  return vp;
-}
-
-/* update VMAP info with ldinfo() information
-   Input is ptr to ldinfo() results.  */
-
-static void
-vmap_ldinfo (ldi)
-     register struct ld_info *ldi;
-{
-  struct stat ii, vi;
-  register struct vmap *vp;
-  int got_one, retried;
-  int got_exec_file = 0;
-
-  /* For each *ldi, see if we have a corresponding *vp.
-     If so, update the mapping, and symbol table.
-     If not, add an entry and symbol table.  */
-
-  do {
-    char *name = ldi->ldinfo_filename;
-    char *memb = name + strlen(name) + 1;
-
-    retried = 0;
-
-    if (fstat (ldi->ldinfo_fd, &ii) < 0)
-      {
-	/* The kernel sets ld_info to -1, if the process is still using the
-	   object, and the object is removed. Keep the symbol info for the
-	   removed object and issue a warning.  */
-	warning ("%s (fd=%d) has disappeared, keeping its symbols",
-		 name, ldi->ldinfo_fd);
-        continue;
-      }
-  retry:
-    for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
-      {
-	struct objfile *objfile;
-
-	/* First try to find a `vp', which is the same as in ldinfo.
-	   If not the same, just continue and grep the next `vp'. If same,
-	   relocate its tstart, tend, dstart, dend values. If no such `vp'
-	   found, get out of this for loop, add this ldi entry as a new vmap
-	   (add_vmap) and come back, find its `vp' and so on... */
-
-	/* The filenames are not always sufficient to match on. */
-
-	if ((name[0] == '/' && !STREQ(name, vp->name))
-	    || (memb[0] && !STREQ(memb, vp->member)))
-	  continue;
-
-	/* See if we are referring to the same file.
-	   We have to check objfile->obfd, symfile.c:reread_symbols might
-	   have updated the obfd after a change.  */
-	objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
-	if (objfile == NULL
-	    || objfile->obfd == NULL
-	    || bfd_stat (objfile->obfd, &vi) < 0)
-	  {
-	    warning ("Unable to stat %s, keeping its symbols", name);
-	    continue;
-	  }
-
-	if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
-	  continue;
-
-	if (!retried)
-	  close (ldi->ldinfo_fd);
-
-	++got_one;
-
-	/* Found a corresponding VMAP.  Remap!  */
-
-	/* We can assume pointer == CORE_ADDR, this code is native only.  */
-	vp->tstart = (CORE_ADDR) ldi->ldinfo_textorg;
-	vp->tend   = vp->tstart + ldi->ldinfo_textsize;
-	vp->dstart = (CORE_ADDR) ldi->ldinfo_dataorg;
-	vp->dend   = vp->dstart + ldi->ldinfo_datasize;
-
-	/* The run time loader maps the file header in addition to the text
-	   section and returns a pointer to the header in ldinfo_textorg.
-	   Adjust the text start address to point to the real start address
-	   of the text section.  */
-	vp->tstart += vp->toffs;
-
-	/* The objfile is only NULL for the exec file.  */
-	if (vp->objfile == NULL)
-	  got_exec_file = 1;
-
-	/* relocate symbol table(s). */
-	vmap_symtab (vp);
-
-	/* There may be more, so we don't break out of the loop.  */
-      }
-
-    /* if there was no matching *vp, we must perforce create the sucker(s) */
-    if (!got_one && !retried)
-      {
-	add_vmap (ldi);
-	++retried;
-	goto retry;
-      }
-  } while (ldi->ldinfo_next
-	   && (ldi = (void *) (ldi->ldinfo_next + (char *) ldi)));
-
-  /* If we don't find the symfile_objfile anywhere in the ldinfo, it
-     is unlikely that the symbol file is relocated to the proper
-     address.  And we might have attached to a process which is
-     running a different copy of the same executable.  */
-  if (symfile_objfile != NULL && !got_exec_file)
-    {
-      warning_begin ();
-      fputs_unfiltered ("Symbol file ", gdb_stderr);
-      fputs_unfiltered (symfile_objfile->name, gdb_stderr);
-      fputs_unfiltered ("\nis not mapped; discarding it.\n\
-If in fact that file has symbols which the mapped files listed by\n\
-\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
-\"add-symbol-file\" commands (note that you must take care of relocating\n\
-symbols to the proper address).\n", gdb_stderr);
-      free_objfile (symfile_objfile);
-      symfile_objfile = NULL;
-    }
-  breakpoint_re_set ();
-}
-
-/* As well as symbol tables, exec_sections need relocation. After
-   the inferior process' termination, there will be a relocated symbol
-   table exist with no corresponding inferior process. At that time, we
-   need to use `exec' bfd, rather than the inferior process's memory space
-   to look up symbols.
-
-   `exec_sections' need to be relocated only once, as long as the exec
-   file remains unchanged.
-*/
-
-static void
-vmap_exec ()
-{
-  static bfd *execbfd;
-  int i;
-
-  if (execbfd == exec_bfd)
-    return;
-
-  execbfd = exec_bfd;
-
-  if (!vmap || !exec_ops.to_sections)
-    error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
-
-  for (i=0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
-    {
-      if (STREQ(".text", exec_ops.to_sections[i].the_bfd_section->name))
-	{
-	  exec_ops.to_sections[i].addr += vmap->tstart - vmap->tvma;
-	  exec_ops.to_sections[i].endaddr += vmap->tstart - vmap->tvma;
-	}
-      else if (STREQ(".data", exec_ops.to_sections[i].the_bfd_section->name))
-	{
-	  exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
-	  exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
-	}
-      else if (STREQ(".bss", exec_ops.to_sections[i].the_bfd_section->name))
-	{
-	  exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
-	  exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
-	}
-    }
-}
-
-/* xcoff_relocate_symtab -	hook for symbol table relocation.
-   also reads shared libraries.. */
-
-void
-xcoff_relocate_symtab (pid)
-     unsigned int pid;
-{
-#define	MAX_LOAD_SEGS 64		/* maximum number of load segments */
-
-  struct ld_info *ldi;
-
-  ldi = (void *) alloca(MAX_LOAD_SEGS * sizeof (*ldi));
-
-  /* According to my humble theory, AIX has some timing problems and
-     when the user stack grows, kernel doesn't update stack info in time
-     and ptrace calls step on user stack. That is why we sleep here a little,
-     and give kernel to update its internals. */
-
-  usleep (36000);
-
-  errno = 0;
-  ptrace (PT_LDINFO, pid, (PTRACE_ARG3_TYPE) ldi,
-	  MAX_LOAD_SEGS * sizeof(*ldi), (int *) ldi);
-  if (errno)
-    perror_with_name ("ptrace ldinfo");
-
-  vmap_ldinfo (ldi);
-
-  /* relocate the exec and core sections as well. */
-  vmap_exec ();
-}
-
-/* Core file stuff.  */
-
-/* Relocate symtabs and read in shared library info, based on symbols
-   from the core file.  */
-
-void
-xcoff_relocate_core (target)
-     struct target_ops *target;
-{
-/* Offset of member MEMBER in a struct of type TYPE.  */
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
-#endif
-
-/* Size of a struct ld_info except for the variable-length filename.  */
-#define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename))
-
-  sec_ptr ldinfo_sec;
-  int offset = 0;
-  struct ld_info *ldip;
-  struct vmap *vp;
-
-  /* Allocated size of buffer.  */
-  int buffer_size = LDINFO_SIZE;
-  char *buffer = xmalloc (buffer_size);
-  struct cleanup *old = make_cleanup (free_current_contents, &buffer);
-    
-  /* FIXME, this restriction should not exist.  For now, though I'll
-     avoid coredumps with error() pending a real fix.  */
-  if (vmap == NULL)
-    error
-      ("Can't debug a core file without an executable file (on the RS/6000)");
-  
-  ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
-  if (ldinfo_sec == NULL)
-    {
-    bfd_err:
-      fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
-			bfd_errmsg (bfd_get_error ()));
-      do_cleanups (old);
-      return;
-    }
-  do
-    {
-      int i;
-      int names_found = 0;
-
-      /* Read in everything but the name.  */
-      if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
-				    offset, LDINFO_SIZE) == 0)
-	goto bfd_err;
-
-      /* Now the name.  */
-      i = LDINFO_SIZE;
-      do
-	{
-	  if (i == buffer_size)
-	    {
-	      buffer_size *= 2;
-	      buffer = xrealloc (buffer, buffer_size);
-	    }
-	  if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
-					offset + i, 1) == 0)
-	    goto bfd_err;
-	  if (buffer[i++] == '\0')
-	    ++names_found;
-	} while (names_found < 2);
-
-      ldip = (struct ld_info *) buffer;
-
-      /* Can't use a file descriptor from the core file; need to open it.  */
-      ldip->ldinfo_fd = -1;
-      
-      /* The first ldinfo is for the exec file, allocated elsewhere.  */
-      if (offset == 0)
-	vp = vmap;
-      else
-	vp = add_vmap (ldip);
-
-      offset += ldip->ldinfo_next;
-
-      /* We can assume pointer == CORE_ADDR, this code is native only.  */
-      vp->tstart = (CORE_ADDR) ldip->ldinfo_textorg;
-      vp->tend = vp->tstart + ldip->ldinfo_textsize;
-      vp->dstart = (CORE_ADDR) ldip->ldinfo_dataorg;
-      vp->dend = vp->dstart + ldip->ldinfo_datasize;
-
-      /* The run time loader maps the file header in addition to the text
-	 section and returns a pointer to the header in ldinfo_textorg.
-	 Adjust the text start address to point to the real start address
-	 of the text section.  */
-      vp->tstart += vp->toffs;
-
-      /* Unless this is the exec file,
-	 add our sections to the section table for the core target.  */
-      if (vp != vmap)
-	{
-	  int count;
-	  struct section_table *stp;
-	  int update_coreops;
-
-	  /* We must update the to_sections field in the core_ops structure
-	     now to avoid dangling pointer dereferences.  */
-	  update_coreops = core_ops.to_sections == target->to_sections;
-	  
-	  count = target->to_sections_end - target->to_sections;
-	  count += 2;
-	  target->to_sections = (struct section_table *)
-	    xrealloc (target->to_sections,
-		      sizeof (struct section_table) * count);
-	  target->to_sections_end = target->to_sections + count;
-
-	  /* Update the to_sections field in the core_ops structure
-	     if needed.  */
-	  if (update_coreops)
-	    {
-	      core_ops.to_sections = target->to_sections;
-	      core_ops.to_sections_end = target->to_sections_end;
-	    }
-	  stp = target->to_sections_end - 2;
-
-	  stp->bfd = vp->bfd;
-	  stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".text");
-	  stp->addr = vp->tstart;
-	  stp->endaddr = vp->tend;
-	  stp++;
-	  
-	  stp->bfd = vp->bfd;
-	  stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".data");
-	  stp->addr = vp->dstart;
-	  stp->endaddr = vp->dend;
-	}
-
-      vmap_symtab (vp);
-    } while (ldip->ldinfo_next != 0);
-  vmap_exec ();
-  breakpoint_re_set ();
-  do_cleanups (old);
-}
-
-int
-kernel_u_size ()
-{
-  return (sizeof (struct user));
-}
-
-/* Under AIX, we have to pass the correct TOC pointer to a function
-   when calling functions in the inferior.
-   We try to find the relative toc offset of the objfile containing PC
-   and add the current load address of the data segment from the vmap.  */
-
-static CORE_ADDR
-find_toc_address (pc)
-     CORE_ADDR pc;
-{
-  struct vmap *vp;
-
-  for (vp = vmap; vp; vp = vp->nxt)
-    {
-      if (pc >= vp->tstart && pc < vp->tend)
-	{
-	  /* vp->objfile is only NULL for the exec file.  */
-	  return vp->dstart + get_toc_offset (vp->objfile == NULL
-					      ? symfile_objfile
-					      : vp->objfile);
-	}
-    }
-  error ("Unable to find TOC entry for pc 0x%x\n", pc);
-}
-
-/* Register that we are able to handle rs6000 core file formats. */
-
-static struct core_fns rs6000_core_fns =
-{
-  bfd_target_coff_flavour,
-  fetch_core_registers,
-  NULL
-};
-
-void
-_initialize_core_rs6000 ()
-{
-  /* Initialize hook in rs6000-tdep.c for determining the TOC address when
-     calling functions in the inferior.  */
-  find_toc_address_hook = &find_toc_address;
-
-  /* For native configurations, where this module is included, inform
-     the xcoffsolib module where it can find the function for symbol table
-     relocation at runtime. */
-  xcoff_relocate_symtab_hook = &xcoff_relocate_symtab;
-  add_core_fns (&rs6000_core_fns);
-}