* Makefile.in (coff_solib_h, coff-solib.o, i386v-nat.o, lynx-nat.o)

	(remote-st.o, uw-thread.o): Delete.
	(HFILES_NO_SRCDIR, ALLDEPFILES): Update.
	* configure.host: Move hppa*-*-hiux*, i[34567]86-ncr-*,
	i[34567]86-*-dgux*, i[34567]86-*-lynxos*, i[34567]86-*-sco3.2v5*,
	i[34567]86-*-sco3.2v4*, i[34567]86-*-sco*, i[34567]86-*-sysv4.2*,
	i[34567]86-*-sysv4*, i[34567]86-*-sysv5*, i[34567]86-*-unixware2*,
	i[34567]86-*-unixware*, i[34567]86-*-sysv*, i[34567]86-*-isc*, and
	rs6000-*-lynxos* to an obsoletion stanza.
	* configure.tgt: Move hppa*-*-hiux*, i[34567]86-ncr-*,
	i[34567]86-*-lynxos*, m68*-cisco*-*, m68*-tandem-*, m68*-*-os68k*,
	and rs6000-*-lynxos* to an obsoletion stanza.  Do not mention
	i[34567]86-*-netware*.
	* NEWS: Mention deleted targets.

	* coff-solib.c, coff-solib.h, i386v-nat.c, lynx-nat.c, remote-st.c,
	uw-thread.c, config/nm-lynx.h, config/i386/i386sco.mh,
	config/i386/i386sco4.mh, config/i386/i386sco5.mh, config/i386/i386v.mh,
	config/i386/i386v4.mh, config/i386/i386v42mp.mh,
	config/i386/ncr3000.mh, config/i386/ncr3000.mt,
	config/i386/nm-i386sco.h, config/i386/nm-i386sco4.h,
	config/i386/nm-i386sco5.h, config/i386/nm-i386v.h,
	config/i386/nm-i386v4.h, config/i386/nm-i386v42mp.h,
	config/m68k/cisco.mt, config/m68k/os68k.mt, config/m68k/st2000.mt,
	config/m68k/tm-cisco.h, config/m68k/tm-os68k.h,
	config/rs6000/rs6000lynx.mh, config/rs6000/rs6000lynx.mt,
	config/rs6000/tm-rs6000ly.h: Delete files.

1 files changed, 0 insertions, 1073 deletions

diff --git a/gdb/uw-thread.c b/gdb/uw-thread.c
deleted file mode 100644
index 3e148ed..0000000
--- a/gdb/uw-thread.c
+++ /dev/null
@@ -1,1073 +0,0 @@
-/* Low level interface for debugging UnixWare user-mode threads for
-   GDB, the GNU debugger.
-
-   Copyright (C) 1999, 2000, 2001, 2007 Free Software Foundation, Inc.
-   Written by Nick Duffek <nsd@cygnus.com>.
-
-   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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
-
-
-/* Like many systems, UnixWare implements two classes of threads:
-   kernel-mode threads, which are scheduled by the kernel; and
-   user-mode threads, which are scheduled by a library.  UnixWare
-   calls these two classes lightweight processes (LWPs) and threads,
-   respectively.
-
-   This module deals with user-mode threads.  It calls procfs_ops
-   functions to deal with LWPs and processes and core_ops functions to
-   deal with core files.
-
-   As of this writing, the user-mode thread debugging interface is not
-   documented beyond the comments in <thread.h>.  The following
-   description has been gleaned from experience and from information
-   provided by SCO.
-
-   libthread.so, against which all UnixWare user-mode thread programs
-   link, provides a global thread_debug structure named _thr_debug.
-   It has three fields:
-
-     (1) thr_map is a pointer to a pointer to an element of a
-	 thread_map ring.  A thread_map contains a single thread's id
-	 number, state, LWP pointer, recent register state, and other
-	 useful information.
-
-     (2) thr_brk is a pointer to a stub function that libthread.so
-	 calls when it changes a thread's state, e.g. by creating it,
-	 switching it to an LWP, or causing it to exit.
-
-     (3) thr_debug_on controls whether libthread.so calls thr_brk().
-
-   Debuggers are able to track thread activity by setting a private
-   breakpoint on thr_brk() and setting thr_debug_on to 1.
-
-   thr_brk() receives two arguments:
-
-     (1) a pointer to a thread_map describing the thread being
-	 changed; and
-
-     (2) an enum thread_change specifying one of the following
-	 changes:
-
-	 invalid		 unknown
-	 thread_create		 thread has just been created
-	 thread_exit		 thread has just exited
-	 switch_begin		 thread will be switched to an LWP
-	 switch_complete	 thread has been switched to an LWP
-	 cancel_complete	 thread wasn't switched to an LWP
-	 thread_suspend		 thread has been thr_suspend()ed
-	 thread_suspend_pending	 thread will be thr_suspend()ed
-	 thread_continue	 thread has been thr_continue()d
-
-   The thread_map argument to thr_brk() is NULL under the following
-   circumstances:
-
-     - The main thread is being acted upon.  The main thread always
-       has id 1, so its thread_map is easy to find by scanning through
-       _thr_debug.thr_map.
-
-     - A "switch_complete" change is occurring, which means that the
-       thread specified in the most recent "switch_begin" change has
-       moved to an LWP.
-
-     - A "cancel_complete" change is occurring, which means that the
-       thread specified in the most recent "switch_begin" change has
-       not moved to an LWP after all.
-
-     - A spurious "switch_begin" change is occurring after a
-       "thread_exit" change.
-
-   Between switch_begin and switch_complete or cancel_complete, the
-   affected thread's LWP pointer is not reliable.  It is possible that
-   other parts of the thread's thread_map are also unreliable during
-   that time.  */
-
-
-#include "defs.h"
-#include "gdbthread.h"
-#include "target.h"
-#include "inferior.h"
-#include "regcache.h"
-#include <fcntl.h>
-
-/* <thread.h> includes <sys/priocntl.h>, which requires boolean_t from
-   <sys/types.h>, which doesn't typedef boolean_t with gcc.  */
-
-#define boolean_t int
-#include <thread.h>
-#undef boolean_t
-
-#include <synch.h>		/* for UnixWare 2.x */
-
-/* Prototypes for supply_gregset etc.  */
-#include "gregset.h"
-
-/* Offset from SP to first arg on stack at first instruction of a
-   function.  We provide a default here that's right for most, if not
-   all, targets that use this file.  */
-
-#ifndef SP_ARG0
-#define SP_ARG0 (1 * 4)
-#endif
-
-/* Whether to emit debugging output.  */
-
-#define DEBUG 0
-
-/* Default debugging output file, overridden by envvar UWTHR_DEBUG.  */
-
-#define DEBUG_FILE "/dev/tty"
-
-/* #if DEBUG, write string S to the debugging output channel.  */
-
-#if !DEBUG
-# define DBG(fmt_and_args)
-# define DBG2(fmt_and_args)
-#else
-# define DBG(fmt_and_args) dbg fmt_and_args
-# define DBG2(fmt_and_args)
-#endif
-
-/* Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert
-   inferior_ptid to a composite thread/process id.  */
-
-#define CALL_BASE_1(call)		\
-do {					\
-  DBG2(("CALL_BASE(" #call ")"));	\
-  call;					\
-  do_cleanups (infpid_cleanup);		\
-} while (0)
-
-/* If inferior_ptid can be converted to a composite lwp/process id, do so,
-   evaluate base_ops function CALL, and then convert inferior_ptid back to a
-   composite thread/process id.
-
-   Otherwise, issue an error message and return nonlocally.  */
-
-#define CALL_BASE(call)			\
-do {					\
-  if (!lwp_infpid ())			\
-    error (_("uw-thread: no lwp"));	\
-  CALL_BASE_1 (call);			\
-} while (0)
-
-/* Like CALL_BASE(), but instead of returning nonlocally on error, set
-   *CALLED to whether the inferior_ptid conversion was successful.  */
-
-#define TRY_BASE(call, called)		\
-do {					\
-  if ((*(called) = lwp_infpid ()))	\
-    CALL_BASE_1 (call);			\
-} while (0)
-
-/* Information passed by thread_iter() to its callback parameter.  */
-
-typedef struct {
-  struct thread_map map;
-  __lwp_desc_t lwp;
-  CORE_ADDR mapp;
-} iter_t;
-
-/* Private thread data for the thread_info struct.  */
-
-struct private_thread_info {
-  int stable;		/* 0 if libthread.so is modifying thread map */
-  int thrid;		/* thread id assigned by libthread.so */
-  int lwpid;		/* thread's lwp if .stable, 0 means no lwp */
-  CORE_ADDR mapp;	/* address of thread's map structure */
-};
-
-
-/* procfs.c's target-specific operations.  */
-extern struct target_ops procfs_ops;
-
-/* Flag to prevent procfs.c from starting inferior processes.  */
-extern int procfs_suppress_run;
-
-/* This module's target-specific operations.  */
-static struct target_ops uw_thread_ops;
-
-/* Copy of the target over which uw_thread_ops is pushed.  This is
-   more convenient than a pointer to procfs_ops or core_ops, because
-   they lack current_target's default callbacks.  */
-static struct target_ops base_ops;
-
-/* Saved pointer to previous owner of
-   deprecated_target_new_objfile_hook.  */
-static void (*target_new_objfile_chain)(struct objfile *);
-
-/* Whether we are debugging a user-space thread program.  This isn't
-   set until after libthread.so is loaded by the program being
-   debugged.
-
-   Except for module one-time intialization and where otherwise
-   documented, no functions in this module get called when
-   !uw_thread_active.  */
-static int uw_thread_active;
-
-/* For efficiency, cache the addresses of libthread.so's _thr_debug
-   structure, its thr_brk stub function, and the main thread's map.  */
-static CORE_ADDR thr_debug_addr;
-static CORE_ADDR thr_brk_addr;
-static CORE_ADDR thr_map_main;
-
-/* Remember the thread most recently marked as switching.  Necessary because
-   libthread.so passes null map when calling stub with tc_*_complete.  */
-static struct thread_info *switchto_thread;
-
-/* Cleanup chain for safely restoring inferior_ptid after CALL_BASE.  */
-static struct cleanup *infpid_cleanup;
-
-
-#if DEBUG
-/* Helper function for DBG() macro: if printf-style FMT is non-null, format it
-   with args and display the result on the debugging output channel.  */
-
-static void
-dbg (char *fmt, ...)
-{
-  static int fd = -1, len;
-  va_list args;
-  char buf[1024];
-  char *path;
-
-  if (!fmt)
-    return;
-
-  if (fd < 0)
-    {
-      path = getenv ("UWTHR_DEBUG");
-      if (!path)
-	path = DEBUG_FILE;
-      if ((fd = open (path, O_WRONLY | O_CREAT | O_TRUNC, 0664)) < 0)
-	error (_("can't open %s."), path);
-    }
-
-  va_start (args, fmt);
-  vsprintf (buf, fmt, args);
-  va_end (args);
-
-  len = strlen (buf);
-  buf[len] = '\n';
-  (void)write (fd, buf, len + 1);
-}
-
-#if 0
-/* Return a string representing composite PID's components.  */
-
-static char *
-dbgpid (ptid_t ptid)
-{
-  static char *buf, buf1[80], buf2[80];
-  if (!buf || buf == buf2)
-    buf = buf1;
-  else
-    buf = buf2;
-
-  if (PIDGET (ptid) <= 0)
-    sprintf (buf, "%d", PIDGET (ptid));
-  else
-    sprintf (buf, "%s %ld/%d", ISTID (pid) ? "thr" : "lwp",
-	     TIDGET (pid), PIDGET (pid));
-
-  return buf;
-}
-
-/* Return a string representing thread state CHANGE.  */
-
-static char *
-dbgchange (enum thread_change change)
-{
-  switch (change) {
-  case tc_invalid:			return "invalid";
-  case tc_thread_create:		return "thread_create";
-  case tc_thread_exit:			return "thread_exit";
-  case tc_switch_begin:			return "switch_begin";
-  case tc_switch_complete:		return "switch_complete";
-  case tc_cancel_complete:		return "cancel_complete";
-  case tc_thread_suspend:		return "thread_suspend";
-  case tc_thread_suspend_pending:	return "thread_suspend_pending";
-  case tc_thread_continue:		return "thread_continue";
-  default:				return "unknown";
-  }
-}
-
-/* Return a string representing thread STATE.  */
-
-static char *
-dbgstate (int state)
-{
-  switch (state) {
-  case TS_ONPROC:	return "running";
-  case TS_SLEEP:	return "sleeping";
-  case TS_RUNNABLE:	return "runnable";
-  case TS_ZOMBIE:	return "zombie";
-  case TS_SUSPENDED:	return "suspended";
-#ifdef TS_FORK
-  case TS_FORK:		return "forking";
-#endif
-  default:		return "confused";
-  }
-}
-#endif  /* 0 */
-#endif  /* DEBUG */
-
-
-/* Read the contents of _thr_debug into *DEBUGP.  Return success.  */
-
-static int
-read_thr_debug (struct thread_debug *debugp)
-{
-  return base_ops.deprecated_xfer_memory (thr_debug_addr, (char *)debugp,
-					  sizeof (*debugp), 0, NULL,
-					  &base_ops);
-}
-
-/* Read into MAP the contents of the thread map at inferior process address
-   MAPP.  Return success.  */
-
-static int
-read_map (CORE_ADDR mapp, struct thread_map *map)
-{
-  return base_ops.deprecated_xfer_memory ((CORE_ADDR)THR_MAP (mapp),
-					  (char *)map, sizeof (*map),
-					  0, NULL, &base_ops);
-}
-
-/* Read into LWP the contents of the lwp decriptor at inferior process address
-   LWPP.  Return success.  */
-
-static int
-read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp)
-{
-  return base_ops.deprecated_xfer_memory (lwpp, (char *)lwp,
-					  sizeof (*lwp), 0, NULL, &base_ops);
-}
-
-/* Iterate through all user threads, applying FUNC(<map>, <lwp>, DATA) until
-     (a) FUNC returns nonzero,
-     (b) FUNC has been applied to all threads, or
-     (c) an error occurs,
-   where <map> is the thread's struct thread_map and <lwp> if non-null is the
-   thread's current __lwp_desc_t.
-
-   If a call to FUNC returns nonzero, return that value; otherwise, return 0.  */
-
-static int
-thread_iter (int (*func)(iter_t *, void *), void *data)
-{
-  struct thread_debug debug;
-  CORE_ADDR first, mapp;
-  iter_t iter;
-  int ret;
-
-  if (!read_thr_debug (&debug))
-    return 0;
-  if (!base_ops.deprecated_xfer_memory ((CORE_ADDR)debug.thr_map,
-					(char *)&mapp, sizeof (mapp), 0, NULL,
-					&base_ops))
-    return 0;
-  if (!mapp)
-    return 0;
-
-  for (first = mapp;;)
-    {
-      if (!read_map (mapp, &iter.map))
-	return 0;
-
-      if (iter.map.thr_lwpp)
-	if (!read_lwp ((CORE_ADDR)iter.map.thr_lwpp, &iter.lwp))
-	  return 0;
-
-      iter.mapp = mapp;
-      if ((ret = func (&iter, data)))
-	return ret;
-
-      mapp = (CORE_ADDR)iter.map.thr_next;
-      if (mapp == first)
-	return 0;
-    }
-}
-
-/* Deactivate user-mode thread support.  */
-
-static void
-deactivate_uw_thread (void)
-{
-  remove_thread_event_breakpoints ();
-  uw_thread_active = 0;
-  unpush_target (&uw_thread_ops);
-}
-
-/* Return the composite lwp/process id corresponding to composite
-   id PID.  If PID is a thread with no lwp, return 0.  */
-
-static ptid_t
-thr_to_lwp (ptid_t ptid)
-{
-  struct thread_info *info;
-  ptid_t lid;
-
-  if (!ISTID (ptid))
-    lid = ptid;
-  else if (!(info = find_thread_pid (ptid)))
-    lid = null_ptid;
-  else if (!info->private->lwpid)
-    lid = null_ptid;
-  else
-    lid = MKLID (PIDGET (ptid), info->private->lwpid);
-
-  DBG2(("  thr_to_lwp(%s) = %s", dbgpid (pid), dbgpid (lid)));
-  return lid;
-}
-
-/* find_thread_lwp() callback: return whether TP describes a thread
-   associated with lwp id DATA.  */
-
-static int
-find_thread_lwp_callback (struct thread_info *tp, void *data)
-{
-  int lwpid = (int)data;
-
-  if (!ISTID (tp->ptid))
-    return 0;
-  if (!tp->private->stable)
-    return 0;
-  if (lwpid != tp->private->lwpid)
-    return 0;
-
-  /* match */
-  return 1;
-}
-
-/* If a thread is associated with lwp id LWPID, return the corresponding
-   member of the global thread list; otherwise, return null.  */
-
-static struct thread_info *
-find_thread_lwp (int lwpid)
-{
-  return iterate_over_threads (find_thread_lwp_callback, (void *)lwpid);
-}
-
-/* Return the composite thread/process id corresponding to composite
-   id PID.  If PID is an lwp with no thread, return PID.  */
-
-static ptid_t
-lwp_to_thr (ptid_t ptid)
-{
-  struct thread_info *info;
-  int lwpid;
-  ptid_t tid = ptid;
-
-  if (ISTID (ptid))
-    goto done;
-  if (!(lwpid = LIDGET (ptid)))
-    goto done;
-  if (!(info = find_thread_lwp (lwpid)))
-    goto done;
-  tid = MKTID (PIDGET (ptid), info->private->thrid);
-
- done:
-  DBG2((ISTID (tid) ? NULL : "lwp_to_thr: no thr for %s", dbgpid (ptid)));
-  return tid;
-}
-
-/* do_cleanups() callback: convert inferior_ptid to a composite
-   thread/process id after having made a procfs call.  */
-
-static void
-thr_infpid (void *unused)
-{
-  ptid_t ptid = lwp_to_thr (inferior_ptid);
-  DBG2((" inferior_ptid from procfs: %s => %s",
-	dbgpid (inferior_ptid), dbgpid (ptid)));
-  inferior_ptid = ptid;
-}
-
-/* If possible, convert inferior_ptid to a composite lwp/process id in
-   preparation for making a procfs call.  Return success.  */
-
-static int
-lwp_infpid (void)
-{
-  ptid_t ptid = thr_to_lwp (inferior_ptid);
-  DBG2((" inferior_ptid to procfs: %s => %s",
-	dbgpid (inferior_ptid), dbgpid (ptid)));
-
-  if (ptid_equal (ptid, null_ptid))
-    return 0;
-
-  inferior_ptid = ptid;
-  infpid_cleanup = make_cleanup (thr_infpid, NULL);
-  return 1;
-}
-
-/* Add to the global thread list a new user-mode thread with system id THRID,
-   lwp id LWPID, map address MAPP, and composite thread/process PID.  */
-
-static void
-add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, ptid_t ptid)
-{
-  struct thread_info *newthread;
-
-  if ((newthread = add_thread (ptid)) == NULL)
-    error (_("failed to create new thread structure"));
-
-  newthread->private = xmalloc (sizeof (struct private_thread_info));
-  newthread->private->stable = 1;
-  newthread->private->thrid = thrid;
-  newthread->private->lwpid = lwpid;
-  newthread->private->mapp = mapp;
-
-  if (target_has_execution)
-    printf_unfiltered ("[New %s]\n", target_pid_to_str (ptid));
-}
-
-/* notice_threads() and find_main() callback: if the thread list doesn't
-   already contain the thread described by ITER, add it if it's the main
-   thread or if !DATA.  */
-
-static int
-notice_thread (iter_t *iter, void *data)
-{
-  int thrid = iter->map.thr_tid;
-  int lwpid = !iter->map.thr_lwpp ? 0 : iter->lwp.lwp_id;
-  ptid_t ptid = MKTID (PIDGET (inferior_ptid), thrid);
-
-  if (!find_thread_pid (ptid) && (!data || thrid == 1))
-    add_thread_uw (thrid, lwpid, iter->mapp, ptid);
-
-  return 0;
-}
-
-/* Add to the thread list any threads it doesn't already contain.  */
-
-static void
-notice_threads (void)
-{
-  thread_iter (notice_thread, NULL);
-}
-
-/* Return the address of the main thread's map.  On error, return 0.  */
-
-static CORE_ADDR
-find_main (void)
-{
-  if (!thr_map_main)
-    {
-      struct thread_info *info;
-      thread_iter (notice_thread, (void *)1);
-      if ((info = find_thread_pid (MKTID (PIDGET (inferior_ptid), 1))))
-	thr_map_main = info->private->mapp;
-    }
-  return thr_map_main;
-}
-
-/* Attach to process specified by ARGS, then initialize for debugging it
-   and wait for the trace-trap that results from attaching.
-
-   This function only gets called with uw_thread_active == 0.  */
-
-static void
-uw_thread_attach (char *args, int from_tty)
-{
-  procfs_ops.to_attach (args, from_tty);
-  if (uw_thread_active)
-    thr_infpid (NULL);
-}
-
-/* Detach from the process attached to by uw_thread_attach().  */
-
-static void
-uw_thread_detach (char *args, int from_tty)
-{
-  deactivate_uw_thread ();
-  base_ops.to_detach (args, from_tty);
-}
-
-/* Tell the inferior process to continue running thread PID if >= 0
-   and all threads otherwise.  */
-
-static void
-uw_thread_resume (ptid_t ptid, int step, enum target_signal signo)
-{
-  if (PIDGET (ptid) > 0)
-    {
-      ptid = thr_to_lwp (ptid);
-      if (ptid_equal (ptid, null_ptid))
-	ptid = pid_to_ptid (-1);
-    }
-
-  CALL_BASE (base_ops.to_resume (ptid, step, signo));
-}
-
-/* If the trap we just received from lwp PID was due to a breakpoint
-   on the libthread.so debugging stub, update this module's state
-   accordingly.  */
-
-static void
-libthread_stub (ptid_t ptid)
-{
-  CORE_ADDR sp, mapp, mapp_main;
-  enum thread_change change;
-  struct thread_map map;
-  __lwp_desc_t lwp;
-  int lwpid;
-  ptid_t tid = null_ptid;
-  struct thread_info *info;
-
-  /* Check for stub breakpoint.  */
-  if (read_pc_pid (ptid) - DECR_PC_AFTER_BREAK != thr_brk_addr)
-    return;
-
-  /* Retrieve stub args.  */
-  sp = read_register_pid (SP_REGNUM, ptid);
-  if (!base_ops.deprecated_xfer_memory (sp + SP_ARG0, (char *)&mapp,
-					sizeof (mapp), 0, NULL, &base_ops))
-    goto err;
-  if (!base_ops.deprecated_xfer_memory (sp + SP_ARG0 + sizeof (mapp),
-					(char *)&change, sizeof (change), 0,
-					NULL, &base_ops))
-    goto err;
-
-  /* create_inferior() may not have finished yet, so notice the main
-     thread to ensure that it's displayed first by add_thread().  */
-  mapp_main = find_main ();
-
-  /* Notice thread creation, deletion, or stability change.  */
-  switch (change) {
-  case tc_switch_begin:
-    if (!mapp)				/* usually means main thread */
-      mapp = mapp_main;
-    /* fall through */
-
-  case tc_thread_create:
-  case tc_thread_exit:
-    if (!mapp)
-      break;
-    if (!read_map (mapp, &map))
-      goto err;
-    tid = MKTID (PIDGET (ptid), map.thr_tid);
-
-    switch (change) {
-    case tc_thread_create:		/* new thread */
-      if (!map.thr_lwpp)
-	lwpid = 0;
-      else if (!read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
-	goto err;
-      else
-	lwpid = lwp.lwp_id;
-      add_thread_uw (map.thr_tid, lwpid, mapp, tid);
-      break;
-
-    case tc_thread_exit:		/* thread has exited */
-      printf_unfiltered ("[Exited %s]\n", target_pid_to_str (tid));
-      delete_thread (tid);
-      if (ptid_equal (tid, inferior_ptid))
-	inferior_ptid = ptid;
-      break;
-
-    case tc_switch_begin:		/* lwp is switching threads */
-      if (switchto_thread)
-	goto err;
-      if (!(switchto_thread = find_thread_pid (tid)))
-	goto err;
-      switchto_thread->private->stable = 0;
-      break;
-
-    default:
-      break;
-    }
-    break;
-
-  case tc_switch_complete:		/* lwp has switched threads */
-  case tc_cancel_complete:		/* lwp didn't switch threads */
-    if (!switchto_thread)
-      goto err;
-
-    if (change == tc_switch_complete)
-      {
-	/* If switchto_thread is the main thread, then (a) the corresponding
-	   tc_switch_begin probably received a null map argument and therefore
-	   (b) it may have been a spurious switch following a tc_thread_exit.
-
-	   Therefore, explicitly query the thread's lwp before caching it in
-	   its thread list entry.  */
-
-	if (!read_map (switchto_thread->private->mapp, &map))
-	  goto err;
-	if (map.thr_lwpp)
-	  {
-	    if (!read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
-	      goto err;
-	    if ((info = find_thread_lwp (lwp.lwp_id)))
-	      info->private->lwpid = 0;
-	    switchto_thread->private->lwpid = lwp.lwp_id;
-	  }
-      }
-
-    switchto_thread->private->stable = 1;
-    switchto_thread = NULL;
-    break;
-
-  case tc_invalid:
-  case tc_thread_suspend:
-  case tc_thread_suspend_pending:
-  case tc_thread_continue:
-  err:
-    DBG(("unexpected condition in libthread_stub()"));
-    break;
-  }
-
-  DBG2(("libthread_stub(%s): %s %s %s", dbgpid (pid), dbgpid (tid),
-	dbgchange (change), tid ? dbgstate (map.thr_state) : ""));
-}
-
-/* Wait for thread/lwp/process ID if >= 0 or for any thread otherwise.  */
-
-static ptid_t
-uw_thread_wait (ptid_t ptid, struct target_waitstatus *status)
-{
-  if (PIDGET (ptid) > 0)
-    ptid = thr_to_lwp (ptid);
-  if (PIDGET (ptid) <= 0)
-    ptid = pid_to_ptid (-1);
-
-  CALL_BASE (ptid = base_ops.to_wait (ptid, status));
-
-  if (status->kind == TARGET_WAITKIND_STOPPED &&
-      status->value.sig == TARGET_SIGNAL_TRAP)
-    libthread_stub (ptid);
-
-  return lwp_to_thr (ptid);
-}
-
-/* Tell gdb about the registers in the thread/lwp/process specified by
-   inferior_ptid.  */
-
-static void
-uw_thread_fetch_registers (int regno)
-{
-  int called;
-  struct thread_info *info;
-  struct thread_map map;
-
-  TRY_BASE (base_ops.to_fetch_registers (regno), &called);
-  if (called)
-    return;
-
-  if (!(info = find_thread_pid (inferior_ptid)))
-    return;
-  if (!read_map (info->private->mapp, &map))
-    return;
-
-  supply_gregset (&map.thr_ucontext.uc_mcontext.gregs);
-  supply_fpregset (&map.thr_ucontext.uc_mcontext.fpregs);
-}
-
-/* Store gdb's current view of the register set into the thread/lwp/process
-   specified by inferior_ptid.  */
-
-static void
-uw_thread_store_registers (int regno)
-{
-  CALL_BASE (base_ops.to_store_registers (regno));
-}
-
-/* Prepare to modify the registers array.  */
-
-static void
-uw_thread_prepare_to_store (void)
-{
-  CALL_BASE (base_ops.to_prepare_to_store ());
-}
-
-/* Fork an inferior process and start debugging it.
-
-   This function only gets called with uw_thread_active == 0.  */
-
-static void
-uw_thread_create_inferior (char *exec_file, char *allargs, char **env,
-			   int from_tty)
-{
-  if (uw_thread_active)
-    deactivate_uw_thread ();
-
-  procfs_ops.to_create_inferior (exec_file, allargs, env, from_tty);
-  if (uw_thread_active)
-    {
-      find_main ();
-      thr_infpid (NULL);
-    }
-}
-
-/* Kill and forget about the inferior process.  */
-
-static void
-uw_thread_kill (void)
-{
-  base_ops.to_kill ();
-}
-
-/* Clean up after the inferior exits.  */
-
-static void
-uw_thread_mourn_inferior (void)
-{
-  deactivate_uw_thread ();
-  base_ops.to_mourn_inferior ();
-}
-
-/* Return whether this module can attach to and run processes.
-
-   This function only gets called with uw_thread_active == 0.  */
-
-static int
-uw_thread_can_run (void)
-{
-  return procfs_suppress_run;
-}
-
-/* Return whether thread PID is still valid.  */
-
-static int
-uw_thread_alive (ptid_t ptid)
-{
-  if (!ISTID (ptid))
-    return base_ops.to_thread_alive (ptid);
-
-  /* If it's in the thread list, it's valid, because otherwise
-     libthread_stub() would have deleted it.  */
-  return in_thread_list (ptid);
-}
-
-/* Add to the thread list any threads and lwps it doesn't already contain.  */
-
-static void
-uw_thread_find_new_threads (void)
-{
-  CALL_BASE (if (base_ops.to_find_new_threads)
-	       base_ops.to_find_new_threads ());
-  notice_threads ();
-}
-
-/* Return a string for pretty-printing PID in "info threads" output.
-   This may be called by either procfs.c or by generic gdb.  */
-
-static char *
-uw_thread_pid_to_str (ptid_t ptid)
-{
-#define FMT "Thread %ld"
-  static char buf[sizeof (FMT) + 3 * sizeof (long)];
-
-  if (!ISTID (ptid))
-    /* core_ops says "process foo", so call procfs_ops explicitly.  */
-    return procfs_ops.to_pid_to_str (ptid);
-
-  sprintf (buf, FMT, TIDGET (ptid));
-#undef FMT
-  return buf;
-}
-
-/* Return a string displaying INFO state information in "info threads"
-   output.  */
-
-static char *
-uw_extra_thread_info (struct thread_info *info)
-{
-  static char buf[80];
-  struct thread_map map;
-  __lwp_desc_t lwp;
-  int lwpid;
-  char *name;
-
-  if (!ISTID (info->ptid))
-    return NULL;
-
-  if (!info->private->stable)
-    return "switching";
-
-  if (!read_map (info->private->mapp, &map))
-    return NULL;
-
-  if (!map.thr_lwpp || !read_lwp ((CORE_ADDR)map.thr_lwpp, &lwp))
-    lwpid = 0;
-  else
-    lwpid = lwp.lwp_id;
-
-  switch (map.thr_state) {
-  case TS_ONPROC:	name = "running";	break;
-  case TS_SLEEP:	name = "sleeping";	break;
-  case TS_RUNNABLE:	name = "runnable";	break;
-  case TS_ZOMBIE:	name = "zombie";	break;
-  case TS_SUSPENDED:	name = "suspended";	break;
-#ifdef TS_FORK
-  case TS_FORK:		name = "forking";	break;
-#endif
-  default:		name = "confused";	break;
-  }
-
-  if (!lwpid)
-    return name;
-
-  sprintf (buf, "%s, LWP %d", name, lwpid);
-  return buf;
-}
-
-/* Check whether libthread.so has just been loaded, and if so, try to
-   initialize user-space thread debugging support.
-
-   libthread.so loading happens while (a) an inferior process is being
-   started by procfs and (b) a core image is being loaded.
-
-   This function often gets called with uw_thread_active == 0.  */
-
-static void
-libthread_init (void)
-{
-  struct minimal_symbol *ms;
-  struct thread_debug debug;
-  CORE_ADDR onp;
-  struct breakpoint *b;
-  int one = 1;
-
-  /* Don't initialize twice.  */
-  if (uw_thread_active)
-    return;
-
-  /* Check whether libthread.so has been loaded.  */
-  if (!(ms = lookup_minimal_symbol ("_thr_debug", NULL, NULL)))
-    return;
-
-  /* Cache _thr_debug's address.  */
-  if (!(thr_debug_addr = SYMBOL_VALUE_ADDRESS (ms)))
-    return;
-
-  /* Initialize base_ops.deprecated_xfer_memory().  */
-  base_ops = current_target;
-
-  /* Load _thr_debug's current contents.  */
-  if (!read_thr_debug (&debug))
-    return;
-
-  /* User code (e.g. my test programs) may dereference _thr_debug,
-     making it availble to GDB before shared libs are loaded.  */
-  if (!debug.thr_map)
-    return;
-
-  /* libthread.so has been loaded, and the current_target should now
-     reflect core_ops or procfs_ops.  */
-  push_target (&uw_thread_ops);		/* must precede notice_threads() */
-  uw_thread_active = 1;
-
-  if (!target_has_execution)
-
-    /* Locate threads in core file.  */
-    notice_threads ();
-
-  else
-    {
-      /* Set a breakpoint on the stub function provided by libthread.so.  */
-      thr_brk_addr = (CORE_ADDR)debug.thr_brk;
-      if (!(b = create_thread_event_breakpoint (thr_brk_addr)))
-	goto err;
-
-      /* Activate the stub function.  */
-      onp = (CORE_ADDR)&((struct thread_debug *)thr_debug_addr)->thr_debug_on;
-      if (!base_ops.deprecated_xfer_memory ((CORE_ADDR)onp, (char *)&one,
-					    sizeof (one), 1, NULL, &base_ops))
-	{
-	  delete_breakpoint (b);
-	  goto err;
-	}
-
-      /* Prepare for finding the main thread, which doesn't yet exist.  */
-      thr_map_main = 0;
-    }
-
-  return;
-
- err:
-  warning (_("uw-thread: unable to initialize user-mode thread debugging."));
-  deactivate_uw_thread ();
-}
-
-/* deprecated_target_new_objfile_hook callback.
-
-   If OBJFILE is non-null, check whether libthread.so was just loaded,
-   and if so, prepare for user-mode thread debugging.
-
-   If OBJFILE is null, libthread.so has gone away, so stop debugging
-   user-mode threads.
-
-   This function often gets called with uw_thread_active == 0.  */
-
-static void
-uw_thread_new_objfile (struct objfile *objfile)
-{
-  if (objfile)
-    libthread_init ();
-
-  else if (uw_thread_active)
-    deactivate_uw_thread ();
-
-  if (target_new_objfile_chain)
-    target_new_objfile_chain (objfile);
-}
-
-/* Initialize uw_thread_ops.  */
-
-static void
-init_uw_thread_ops (void)
-{
-  uw_thread_ops.to_shortname          = "unixware-threads";
-  uw_thread_ops.to_longname           = "UnixWare threads and pthread.";
-  uw_thread_ops.to_doc        = "UnixWare threads and pthread support.";
-  uw_thread_ops.to_attach             = uw_thread_attach;
-  uw_thread_ops.to_detach             = uw_thread_detach;
-  uw_thread_ops.to_resume             = uw_thread_resume;
-  uw_thread_ops.to_wait               = uw_thread_wait;
-  uw_thread_ops.to_fetch_registers    = uw_thread_fetch_registers;
-  uw_thread_ops.to_store_registers    = uw_thread_store_registers;
-  uw_thread_ops.to_prepare_to_store   = uw_thread_prepare_to_store;
-  uw_thread_ops.to_create_inferior    = uw_thread_create_inferior;
-  uw_thread_ops.to_kill               = uw_thread_kill;
-  uw_thread_ops.to_mourn_inferior     = uw_thread_mourn_inferior;
-  uw_thread_ops.to_can_run            = uw_thread_can_run;
-  uw_thread_ops.to_thread_alive       = uw_thread_alive;
-  uw_thread_ops.to_find_new_threads   = uw_thread_find_new_threads;
-  uw_thread_ops.to_pid_to_str         = uw_thread_pid_to_str;
-  uw_thread_ops.to_extra_thread_info  = uw_extra_thread_info;
-  uw_thread_ops.to_stratum            = thread_stratum;
-  uw_thread_ops.to_magic              = OPS_MAGIC;
-}
-
-/* Module startup initialization function, automagically called by
-   init.c.  */
-
-void
-_initialize_uw_thread (void)
-{
-  init_uw_thread_ops ();
-  add_target (&uw_thread_ops);
-
-  procfs_suppress_run = 1;
-
-  /* Notice when libthread.so gets loaded.  */
-  target_new_objfile_chain = deprecated_target_new_objfile_hook;
-  deprecated_target_new_objfile_hook = uw_thread_new_objfile;
-}