26 files changed, 2103 insertions, 1998 deletions

diff --git a/devel/gdb66/files/freebsd-uthread.c b/devel/gdb66/files/freebsd-uthread.c
new file mode 100644
index 000000000000..933dc51926c3
--- /dev/null
+++ b/devel/gdb66/files/freebsd-uthread.c
@@ -0,0 +1,993 @@
+/* Low level interface for debugging FreeBSD user threads for GDB, the GNU debugger.
+   Copyright 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.  */
+
+/* $FreeBSD$ */
+
+/* This module implements a sort of half target that sits between the
+   machine-independent parts of GDB and the ptrace interface (infptrace.c) to
+   provide access to the FreeBSD user-mode thread implementation.
+
+   FreeBSD threads are true user-mode threads, which are invoked via
+   the pthread_* interfaces.  These are mostly implemented in
+   user-space, with all thread context kept in various structures that
+   live in the user's heap.  For the most part, the kernel has no
+   knowlege of these threads.
+
+   Based largely on hpux-thread.c
+
+   */
+
+
+#include "defs.h"
+#include <sys/queue.h>
+#include <signal.h>
+#include <setjmp.h>
+#include <string.h>
+#include "gdbthread.h"
+#include "target.h"
+#include "inferior.h"
+#include <fcntl.h>
+#include <ucontext.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include "gdbcore.h"
+#include "regcache.h"
+
+extern int child_suppress_run;
+extern struct target_ops child_ops; /* target vector for inftarg.c */
+
+extern void _initialize_freebsd_uthread PARAMS ((void));
+
+/* Set to true while we are part-way through attaching */
+static int freebsd_uthread_attaching;
+
+static int freebsd_uthread_active = 0;
+static CORE_ADDR P_thread_list;
+static CORE_ADDR P_thread_run;
+
+/* Pointer to the next function on the objfile event chain.  */
+static void (*target_new_objfile_chain) (struct objfile *objfile);
+
+static void freebsd_uthread_resume PARAMS ((ptid_t pid, int step,
+					enum target_signal signo));
+
+static void init_freebsd_uthread_ops PARAMS ((void));
+
+static struct target_ops freebsd_uthread_ops;
+
+static ptid_t find_active_ptid PARAMS ((void));
+
+struct cached_pthread {
+  u_int64_t		uniqueid;
+  int			state;
+  CORE_ADDR		name;
+  union {
+    ucontext_t	uc;
+    jmp_buf	jb;
+  }			ctx;
+};
+
+static ptid_t cached_ptid;
+static struct cached_pthread cached_pthread;
+static CORE_ADDR cached_pthread_addr;
+
+LIST_HEAD(idmaplist, idmap);
+
+struct idmap {
+    LIST_ENTRY(idmap)	link;
+    u_int64_t		uniqueid;
+    int			tid;
+};
+
+#define MAPHASH_SIZE	257
+#define TID_MIN		1
+#define TID_MAX		16383
+
+static int tid_to_hash[TID_MAX + 1];		/* set to map_hash index */
+static struct idmaplist map_hash[MAPHASH_SIZE];
+static int next_free_tid = TID_MIN;		/* first available tid */
+static int last_free_tid = TID_MIN;		/* first unavailable */
+
+static CORE_ADDR P_thread_next_offset;
+static CORE_ADDR P_thread_uniqueid_offset;
+static CORE_ADDR P_thread_state_offset;
+static CORE_ADDR P_thread_name_offset;
+static CORE_ADDR P_thread_ctx_offset;
+static CORE_ADDR P_thread_PS_RUNNING_value;
+static CORE_ADDR P_thread_PS_DEAD_value;
+
+static int next_offset;
+static int uniqueid_offset;
+static int state_offset;
+static int name_offset;
+static int ctx_offset;
+static int PS_RUNNING_value;
+static int PS_DEAD_value;
+
+#define UNIQUEID_HASH(id)	(id % MAPHASH_SIZE)
+#define TID_ADD1(tid)		(((tid) + 1) == TID_MAX + 1 \
+				 ? TID_MIN : (tid) + 1)
+#define IS_TID_FREE(tid)	(tid_to_hash[tid] == -1)
+
+static int
+get_new_tid(int h)
+{
+  int tid = next_free_tid;
+
+  tid_to_hash[tid] = h;
+  next_free_tid = TID_ADD1(next_free_tid);
+  if (next_free_tid == last_free_tid)
+    {
+      int i;
+
+      for (i = last_free_tid; TID_ADD1(i) != last_free_tid; i = TID_ADD1(i))
+	if (IS_TID_FREE(i))
+	  break;
+      if (TID_ADD1(i) == last_free_tid)
+	{
+	  error("too many threads");
+	  return 0;
+	}
+      next_free_tid = i;
+      for (i = TID_ADD1(i); IS_TID_FREE(i); i = TID_ADD1(i))
+	;
+      last_free_tid = i;
+    }
+
+  return tid;
+}
+
+static ptid_t
+find_ptid(u_int64_t uniqueid)
+{
+  int h = UNIQUEID_HASH(uniqueid);
+  struct idmap *im;
+
+  LIST_FOREACH(im, &map_hash[h], link)
+    if (im->uniqueid == uniqueid)
+      return MERGEPID(PIDGET(inferior_ptid), im->tid);
+
+  im = xmalloc(sizeof(struct idmap));
+  im->uniqueid = uniqueid;
+  im->tid = get_new_tid(h);
+  LIST_INSERT_HEAD(&map_hash[h], im, link);
+
+  return MERGEPID(PIDGET(inferior_ptid), im->tid);
+}
+
+static void
+free_ptid(ptid_t ptid)
+{
+  int tid = TIDGET(ptid);
+  int h = tid_to_hash[tid];
+  struct idmap *im;
+
+  if (!tid) return;
+
+  LIST_FOREACH(im, &map_hash[h], link)
+    if (im->tid == tid)
+      break;
+
+  if (!im) return;
+
+  LIST_REMOVE(im, link);
+  tid_to_hash[tid] = -1;
+  free(im);
+}
+
+#define READ_OFFSET(field) read_memory(P_thread_##field##_offset,	\
+				       (char *) &field##_offset,	\
+				       sizeof(field##_offset))
+
+#define READ_VALUE(name) read_memory(P_thread_##name##_value,	\
+				     (char *) &name##_value,	\
+				     sizeof(name##_value))
+
+static void
+read_thread_offsets (void)
+{
+  READ_OFFSET(next);
+  READ_OFFSET(uniqueid);
+  READ_OFFSET(state);
+  READ_OFFSET(name);
+  READ_OFFSET(ctx);
+
+  READ_VALUE(PS_RUNNING);
+  READ_VALUE(PS_DEAD);
+}
+
+#define READ_FIELD(ptr, T, field, result) \
+  read_memory ((ptr) + field##_offset, (char *) &(result), sizeof result)
+
+static u_int64_t
+read_pthread_uniqueid (CORE_ADDR ptr)
+{
+  u_int64_t uniqueid;
+  READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
+  return uniqueid;
+}
+
+static CORE_ADDR
+read_pthread_next (CORE_ADDR ptr)
+{
+  CORE_ADDR next;
+  READ_FIELD(ptr, CORE_ADDR, next, next);
+  return next;
+}
+
+static void
+read_cached_pthread (CORE_ADDR ptr, struct cached_pthread *cache)
+{
+  READ_FIELD(ptr, u_int64_t,	uniqueid,	cache->uniqueid);
+  READ_FIELD(ptr, int,		state,		cache->state);
+  READ_FIELD(ptr, CORE_ADDR,	name,		cache->name);
+  READ_FIELD(ptr, ucontext_t,	ctx,		cache->ctx);
+}
+
+static ptid_t
+find_active_ptid (void)
+{
+  CORE_ADDR ptr;
+
+  read_memory ((CORE_ADDR)P_thread_run,
+	       (char *)&ptr,
+	       sizeof ptr);
+
+  return find_ptid(read_pthread_uniqueid(ptr));
+}
+
+static CORE_ADDR find_pthread_addr PARAMS ((ptid_t ptid));
+static struct cached_pthread * find_pthread PARAMS ((ptid_t ptid));
+
+static CORE_ADDR
+find_pthread_addr (ptid_t ptid)
+{
+  CORE_ADDR ptr;
+
+  if (ptid_equal(ptid, cached_ptid))
+    return cached_pthread_addr;
+
+  read_memory ((CORE_ADDR)P_thread_list,
+	       (char *)&ptr,
+	       sizeof ptr);
+
+  while (ptr != 0)
+    {
+      if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
+	{
+	  cached_ptid = ptid;
+	  cached_pthread_addr = ptr;
+	  read_cached_pthread(ptr, &cached_pthread);
+	  return ptr;
+	}
+      ptr = read_pthread_next(ptr);
+    }
+
+  return NULL;
+}
+
+static struct cached_pthread *
+find_pthread (ptid_t ptid)
+{
+  CORE_ADDR ptr;
+
+  if (ptid_equal(ptid, cached_ptid))
+    return &cached_pthread;
+
+  read_memory ((CORE_ADDR)P_thread_list,
+	       (char *)&ptr,
+	       sizeof ptr);
+
+  while (ptr != 0)
+    {
+      if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
+	{
+	  cached_ptid = ptid;
+	  cached_pthread_addr = ptr;
+	  read_cached_pthread(ptr, &cached_pthread);
+	  return &cached_pthread;
+	}
+      ptr = read_pthread_next(ptr);
+    }
+
+#if 0
+  error ("Can't find pthread %d,%d", PIDGET(ptid), TIDGET(ptid));
+#endif
+  return NULL;
+}
+
+
+/* Most target vector functions from here on actually just pass through to
+   inftarg.c, as they don't need to do anything specific for threads.  */
+
+/* ARGSUSED */
+static void
+freebsd_uthread_open (char *arg, int from_tty)
+{
+  child_ops.to_open (arg, from_tty);
+}
+
+/* Attach to process PID, then initialize for debugging it
+   and wait for the trace-trap that results from attaching.  */
+
+static void
+freebsd_uthread_attach (char *args, int from_tty)
+{
+  child_ops.to_attach (args, from_tty);
+  push_target (&freebsd_uthread_ops);
+  freebsd_uthread_attaching = 1;
+}
+
+/* After an attach, see if the target is threaded */
+
+static void
+freebsd_uthread_post_attach (int pid)
+{
+  if (freebsd_uthread_active)
+    {
+      read_thread_offsets ();
+      inferior_ptid = find_active_ptid ();
+      add_thread (inferior_ptid);
+    }
+  else
+    {
+      unpush_target (&freebsd_uthread_ops);
+      push_target (&child_ops);
+    }
+
+  freebsd_uthread_attaching = 0;
+}
+
+/* Take a program previously attached to and detaches it.
+   The program resumes execution and will no longer stop
+   on signals, etc.  We'd better not have left any breakpoints
+   in the program or it'll die when it hits one.  For this
+   to work, it may be necessary for the process to have been
+   previously attached.  It *might* work if the program was
+   started via the normal ptrace (PTRACE_TRACEME).  */
+
+static void
+freebsd_uthread_detach (char *args, int from_tty)
+{
+  child_ops.to_detach (args, from_tty);
+}
+
+/* Resume execution of process PID.  If STEP is nozero, then
+   just single step it.  If SIGNAL is nonzero, restart it with that
+   signal activated.  We may have to convert pid from a thread-id to an LWP id
+   for procfs.  */
+
+static void
+freebsd_uthread_resume (ptid_t ptid, int step, enum target_signal signo)
+{
+  if (freebsd_uthread_attaching)
+    {
+      child_ops.to_resume (ptid, step, signo);
+      return;
+    }
+
+  child_ops.to_resume (ptid, step, signo);
+  cached_ptid = MERGEPID(0, 0);
+}
+
+/* Wait for any threads to stop.  We may have to convert PID from a thread id
+   to a LWP id, and vice versa on the way out.  */
+
+static ptid_t
+freebsd_uthread_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+{
+  ptid_t rtnval;
+
+  if (freebsd_uthread_attaching)
+    {
+      return child_ops.to_wait (ptid, ourstatus);
+    }
+
+  rtnval = child_ops.to_wait (ptid, ourstatus);
+
+  if (PIDGET(rtnval) >= 0)
+    {
+      rtnval = find_active_ptid ();
+      if (!in_thread_list (rtnval))
+	add_thread (rtnval);
+    }
+
+  return rtnval;
+}
+
+/* XXX: this needs to be selected by target, not [build] host */
+#ifdef __i386__
+
+#include "i386-tdep.h"
+
+static char sigmap[I386_SSE_NUM_REGS] = /* map reg to sigcontext  */
+{
+  12,				/* eax */
+  11,				/* ecx */
+  10,				/* edx */
+  9,				/* ebx */
+  8,				/* esp */
+  7,				/* ebp */
+  6,				/* esi */
+  5,				/* edi */
+  15,				/* eip */
+  17,				/* eflags */
+  16,				/* cs */
+  19,				/* ss */
+  4,				/* ds */
+  3,				/* es */
+  2,				/* fs */
+  1,				/* gs */
+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
+  -1,				/* mxcsr */
+};
+
+static char jmpmap[I386_SSE_NUM_REGS] = /* map reg to jmp_buf */
+{
+  6,				/* eax */
+  -1,				/* ecx */
+  -1,				/* edx */
+  1,				/* ebx */
+  2,				/* esp */
+  3,				/* ebp */
+  4,				/* esi */
+  5,				/* edi */
+  0,				/* eip */
+  -1,				/* eflags */
+  -1,				/* cs */
+  -1,				/* ss */
+  -1,				/* ds */
+  -1,				/* es */
+  -1,				/* fs */
+  -1,				/* gs */
+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
+  -1,				/* mxcsr */
+};
+
+#endif
+
+#ifdef __amd64__
+
+#include "amd64-tdep.h"
+
+// XXX:DEO	not fully ported from i386 yet!!
+
+static char sigmap[AMD64_NUM_REGS_TOTAL] = /* map reg to sigcontext  */
+{
+  12,				/* rax */
+  11,				/* rcx */
+  10,				/* rdx */
+  9,				/* rbx */
+  8,				/* rsp */
+  7,				/* rbp */
+  6,				/* rsi */
+  5,				/* rdi */
+  15,				/* rip */
+  17,				/* rflags */
+  16,				/* cs */
+  19,				/* ss */
+  4,				/* ds */
+  3,				/* es */
+  2,				/* fs */
+  1,				/* gs */
+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
+  -1,				/* mxcsr */
+};
+
+static char jmpmap[AMD64_NUM_REGS_TOTAL] = /* map reg to jmp_buf */
+{
+  6,				/* rax */
+  -1,				/* rcx */
+  -1,				/* rdx */
+  1,				/* rbx */
+  2,				/* rsp */
+  3,				/* rbp */
+  4,				/* rsi */
+  5,				/* rdi */
+  0,				/* rip */
+  -1,				/* rflags */
+  -1,				/* cs */
+  -1,				/* ss */
+  -1,				/* ds */
+  -1,				/* es */
+  -1,				/* fs */
+  -1,				/* gs */
+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
+  -1,				/* mxcsr */
+};
+
+#endif
+
+#ifdef __alpha__
+
+#include "alpha-tdep.h"
+
+static char sigmap[ALPHA_NUM_REGS] =	/* map reg to sigcontext  */
+{
+  1,  2,  3,  4,  5,  6,  7,  8,  /* v0 - t6 */
+  9,  10, 11, 12, 13, 14, 15, 16, /* t7 - fp */
+  17, 18, 19, 20, 21, 22, 23, 24, /* a0 - t9 */
+  25, 26, 27, 28, 29, 30, 31, 32, /* t10 - zero */
+  38, 39, 40, 41, 42, 43, 44, 45, /* f0 - f7 */
+  46, 47, 48, 49, 50, 51, 52, 53, /* f8 - f15 */
+  54, 55, 56, 57, 58, 59, 60, 61, /* f16 - f23 */
+  62, 63, 64, 65, 66, 67, 68, 69, /* f24 - f31 */
+  33, -1			  /* pc, vfp */
+};
+static char jmpmap[ALPHA_NUM_REGS] = {
+  4,  5,  6,  7,  8,  9,  10, 11, /* v0 - t6 */
+  12, 13, 14, 15, 16, 17, 18, 19, /* t7 - fp */
+  20, 21, 22, 23, 24, 25, 26, 27, /* a0 - t9 */
+  28, 29, 30, 31, 32, 33, 34, 35, /* t10 - zero */
+  37, 38, 39, 40, 41, 42, 43, 44, /* f0 - f7 */
+  45, 46, 47, 48, 49, 50, 51, 52, /* f8 - f15 */
+  53, 54, 55, 56, 57, 58, 59, 60, /* f16 - f23 */
+  61, 62, 63, 64, 65, 66, 67, 68, /* f24 - f31 */
+  2,  -1,			  /* pc, vfp */
+};
+
+#endif
+
+#ifdef __sparc64__
+
+static char sigmap[125] =	/* map reg to sigcontext  */
+{
+  -1
+};
+static char jmpmap[125] = {
+  -1
+};
+
+#endif
+
+static void
+freebsd_uthread_fetch_registers (int regno)
+{
+  struct cached_pthread *thread;
+  int active;
+  int first_regno, last_regno;
+  register_t *regbase;
+  char *regmap;
+
+  if (freebsd_uthread_attaching || TIDGET(inferior_ptid) == 0)
+    {
+      child_ops.to_fetch_registers (regno);
+      return;
+    }
+
+  thread = find_pthread (inferior_ptid);
+  active = (ptid_equal(inferior_ptid, find_active_ptid()));
+
+  if (active)
+    {
+      child_ops.to_fetch_registers (regno);
+      return;
+    }
+
+  if (regno == -1)
+    {
+      first_regno = 0;
+      last_regno = NUM_REGS - 1;
+    }
+  else
+    {
+      first_regno = regno;
+      last_regno = regno;
+    }
+
+  regbase = (register_t*) &thread->ctx.jb[0];
+  regmap = jmpmap;
+
+  for (regno = first_regno; regno <= last_regno; regno++)
+    {
+      if (regmap[regno] == -1)
+	child_ops.to_fetch_registers (regno);
+      else
+	if (thread)
+	  supply_register (regno, (char*) &regbase[regmap[regno]]);
+	else
+	  supply_register (regno, NULL);
+    }
+}
+
+static void
+freebsd_uthread_store_registers (int regno)
+{
+  struct cached_pthread *thread;
+  CORE_ADDR ptr;
+  int first_regno, last_regno;
+  u_int32_t *regbase;
+  char *regmap;
+
+  if (freebsd_uthread_attaching)
+    {
+      child_ops.to_store_registers (regno);
+      return;
+    }
+
+  thread = find_pthread (inferior_ptid);
+
+  if (thread->state == PS_RUNNING_value)
+    {
+      child_ops.to_store_registers (regno);
+      return;
+    }
+
+  if (regno == -1)
+    {
+      first_regno = 0;
+      last_regno = NUM_REGS - 1;
+    }
+  else
+    {
+      first_regno = regno;
+      last_regno = regno;
+    }
+
+  regbase = (u_int32_t*) &thread->ctx.jb[0];
+  regmap = jmpmap;
+
+  ptr = find_pthread_addr (inferior_ptid);
+  for (regno = first_regno; regno <= last_regno; regno++)
+    {
+      if (regmap[regno] == -1)
+	child_ops.to_store_registers (regno);
+      else
+	{
+	  u_int32_t *reg = &regbase[regmap[regno]];
+	  int off;
+
+	  /* Hang onto cached value */
+/*DEO:XXX*/
+	  memcpy(reg, deprecated_registers /*regcache_collect ()*/+ DEPRECATED_REGISTER_BYTE (regno),
+		 DEPRECATED_REGISTER_RAW_SIZE (regno));
+
+	  /* And push out to inferior */
+	  off = (char *) reg - (char *) thread;
+	  write_memory (ptr + off, 
+/*DEO:XXX*/
+			deprecated_registers /*regcache_collect ()*/+ DEPRECATED_REGISTER_BYTE (regno),
+			DEPRECATED_REGISTER_RAW_SIZE (regno));
+	}
+    }
+}
+
+/* Get ready to modify the registers array.  On machines which store
+   individual registers, this doesn't need to do anything.  On machines
+   which store all the registers in one fell swoop, this makes sure
+   that registers contains all the registers from the program being
+   debugged.  */
+
+static void
+freebsd_uthread_prepare_to_store (void)
+{
+  child_ops.to_prepare_to_store ();
+}
+
+static int
+freebsd_uthread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
+			     int dowrite, struct mem_attrib *attrib,
+			     struct target_ops *target)
+{
+  return child_ops.to_xfer_memory (memaddr, myaddr, len, dowrite,
+				   attrib, target);
+}
+
+/* Print status information about what we're accessing.  */
+
+static void
+freebsd_uthread_files_info (struct target_ops *ignore)
+{
+  child_ops.to_files_info (ignore);
+}
+
+static void
+freebsd_uthread_kill_inferior (void)
+{
+  child_ops.to_kill ();
+}
+
+static void
+freebsd_uthread_notice_signals (ptid_t ptid)
+{
+  child_ops.to_notice_signals (ptid);
+}
+
+/* Fork an inferior process, and start debugging it with /proc.  */
+
+static void
+freebsd_uthread_create_inferior (char *exec_file, char *allargs, char **env)
+{
+  child_ops.to_create_inferior (exec_file, allargs, env);
+
+  if (PIDGET(inferior_ptid) && freebsd_uthread_active)
+    {
+      read_thread_offsets ();
+      push_target (&freebsd_uthread_ops);
+      inferior_ptid = find_active_ptid ();
+      add_thread (inferior_ptid);
+    }
+}
+
+/* This routine is called to find out if the inferior is using threads.
+   We check for the _thread_run and _thread_list globals. */
+
+void
+freebsd_uthread_new_objfile (struct objfile *objfile)
+{
+  struct minimal_symbol *ms;
+
+  if (!objfile)
+    {
+      freebsd_uthread_active = 0;
+      return;
+    }
+
+  ms = lookup_minimal_symbol ("_thread_run", NULL, objfile);
+
+  if (!ms)
+    return;
+
+  P_thread_run = SYMBOL_VALUE_ADDRESS (ms);
+
+  ms = lookup_minimal_symbol ("_thread_list", NULL, objfile);
+
+  if (!ms)
+    return;
+
+  P_thread_list = SYMBOL_VALUE_ADDRESS (ms);
+
+#define OFFSET_SYM(field)	"_thread_" #field "_offset"
+#define LOOKUP_OFFSET(field)						\
+  do {									\
+      ms = lookup_minimal_symbol (OFFSET_SYM(field), NULL, objfile);	\
+      if (!ms)								\
+	return;								\
+      P_thread_##field##_offset = SYMBOL_VALUE_ADDRESS (ms);		\
+  } while (0);
+
+#define VALUE_SYM(name)		"_thread_" #name "_value"
+#define LOOKUP_VALUE(name)						\
+  do {									\
+       ms = lookup_minimal_symbol (VALUE_SYM(name), NULL, objfile);	\
+      if (!ms)								\
+	return;								\
+      P_thread_##name##_value = SYMBOL_VALUE_ADDRESS (ms);		\
+  } while (0);
+
+  LOOKUP_OFFSET(next);
+  LOOKUP_OFFSET(uniqueid);
+  LOOKUP_OFFSET(state);
+  LOOKUP_OFFSET(name);
+  LOOKUP_OFFSET(ctx);
+
+  LOOKUP_VALUE(PS_RUNNING);
+  LOOKUP_VALUE(PS_DEAD);
+
+  freebsd_uthread_active = 1;
+}
+
+/* Clean up after the inferior dies.  */
+
+static void
+freebsd_uthread_mourn_inferior ()
+{
+  child_ops.to_mourn_inferior ();
+  unpush_target (&freebsd_uthread_ops);
+}
+
+/* Mark our target-struct as eligible for stray "run" and "attach" commands.  */
+
+static int
+freebsd_uthread_can_run ()
+{
+  return child_suppress_run;
+}
+
+static int
+freebsd_uthread_thread_alive (ptid_t ptid)
+{
+  struct cached_pthread *thread;
+  int ret = 0;
+
+  if (freebsd_uthread_attaching)
+    return 1;
+
+  /*
+   * We can get called from child_ops.to_wait() which passes the underlying
+   * pid (without a thread number).
+   */
+  if (TIDGET(ptid) == 0)
+    return 1;
+
+  if (find_pthread_addr (ptid) != 0)
+    {
+      thread = find_pthread (ptid);
+      ret = (thread->state != PS_DEAD_value);
+    }
+
+  if (!ret)
+    free_ptid(ptid);
+
+  return ret;
+}
+
+static void
+freebsd_uthread_stop (void)
+{
+  child_ops.to_stop ();
+}
+
+static void
+freebsd_uthread_find_new_threads (void)
+{
+  CORE_ADDR ptr;
+  int state;
+  u_int64_t uniqueid;
+
+  read_memory ((CORE_ADDR)P_thread_list,
+	       (char *)&ptr,
+	       sizeof ptr);
+
+  while (ptr != 0)
+    {
+      READ_FIELD(ptr, int, state, state);
+      READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
+      if (state != PS_DEAD_value &&
+	  !in_thread_list (find_ptid(uniqueid)))
+	add_thread (find_ptid(uniqueid));
+      ptr = read_pthread_next(ptr);
+    }
+}
+
+/* MUST MATCH enum pthread_state */
+static const char *statenames[] = {
+  "RUNNING",
+  "SIGTHREAD",
+  "MUTEX_WAIT",
+  "COND_WAIT",
+  "FDLR_WAIT",
+  "FDLW_WAIT",
+  "FDR_WAIT",
+  "FDW_WAIT",
+  "POLL_WAIT",
+  "FILE_WAIT",
+  "SELECT_WAIT",
+  "SLEEP_WAIT",
+  "WAIT_WAIT",
+  "SIGSUSPEND",
+  "SIGWAIT",
+  "SPINBLOCK",
+  "JOIN",
+  "SUSPENDED",
+  "DEAD",
+  "DEADLOCK",
+};
+
+#if 0
+
+static int
+freebsd_uthread_get_thread_info (ref, selection, info)
+     gdb_threadref *ref;
+     int selection;
+     struct gdb_ext_thread_info *info;
+{
+  int pid = *ref;
+  struct cached_pthread *thread = find_pthread (pid);
+  struct cleanup *old_chain;
+
+  old_chain = save_inferior_pid ();
+  inferior_pid = main_pid;
+
+  memset(&info->threadid, 0, OPAQUETHREADBYTES);
+
+  memcpy(&info->threadid, ref, sizeof *ref);
+  info->active = thread->state == PS_RUNNING_value;
+  strcpy(info->display, statenames[thread->state]);
+  if (thread->name)
+    read_memory ((CORE_ADDR) thread->name, info->shortname, 32);
+  else
+    strcpy(info->shortname, "");
+
+  do_cleanups (old_chain);
+  return (0);
+}
+
+#endif
+
+char *
+freebsd_uthread_pid_to_str (ptid_t ptid)
+{
+  static char buf[30];
+
+  if (DEPRECATED_STREQ (current_target.to_shortname, "freebsd-uthreads"))
+    sprintf (buf, "Process %d, Thread %ld",
+	     PIDGET(ptid), TIDGET(ptid));
+  else
+    sprintf (buf, "Process %d", PIDGET(ptid));
+
+  return buf;
+}
+
+
+static void
+init_freebsd_uthread_ops ()
+{
+  freebsd_uthread_ops.to_shortname = "freebsd-uthreads";
+  freebsd_uthread_ops.to_longname = "FreeBSD uthreads";
+  freebsd_uthread_ops.to_doc = "FreeBSD user threads support.";
+  freebsd_uthread_ops.to_open = freebsd_uthread_open;
+  freebsd_uthread_ops.to_attach = freebsd_uthread_attach;
+  freebsd_uthread_ops.to_post_attach = freebsd_uthread_post_attach;
+  freebsd_uthread_ops.to_detach = freebsd_uthread_detach;
+  freebsd_uthread_ops.to_resume = freebsd_uthread_resume;
+  freebsd_uthread_ops.to_wait = freebsd_uthread_wait;
+  freebsd_uthread_ops.to_fetch_registers = freebsd_uthread_fetch_registers;
+  freebsd_uthread_ops.to_store_registers = freebsd_uthread_store_registers;
+  freebsd_uthread_ops.to_prepare_to_store = freebsd_uthread_prepare_to_store;
+  freebsd_uthread_ops.to_xfer_memory = freebsd_uthread_xfer_memory;
+  freebsd_uthread_ops.to_files_info = freebsd_uthread_files_info;
+  freebsd_uthread_ops.to_insert_breakpoint = memory_insert_breakpoint;
+  freebsd_uthread_ops.to_remove_breakpoint = memory_remove_breakpoint;
+  freebsd_uthread_ops.to_terminal_init = terminal_init_inferior;
+  freebsd_uthread_ops.to_terminal_inferior = terminal_inferior;
+  freebsd_uthread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+  freebsd_uthread_ops.to_terminal_ours = terminal_ours;
+  freebsd_uthread_ops.to_terminal_info = child_terminal_info;
+  freebsd_uthread_ops.to_kill = freebsd_uthread_kill_inferior;
+  freebsd_uthread_ops.to_create_inferior = freebsd_uthread_create_inferior;
+  freebsd_uthread_ops.to_mourn_inferior = freebsd_uthread_mourn_inferior;
+  freebsd_uthread_ops.to_can_run = freebsd_uthread_can_run;
+  freebsd_uthread_ops.to_notice_signals = freebsd_uthread_notice_signals;
+  freebsd_uthread_ops.to_thread_alive = freebsd_uthread_thread_alive;
+  freebsd_uthread_ops.to_stop = freebsd_uthread_stop;
+  freebsd_uthread_ops.to_stratum = process_stratum;
+  freebsd_uthread_ops.to_has_all_memory = 1;
+  freebsd_uthread_ops.to_has_memory = 1;
+  freebsd_uthread_ops.to_has_stack = 1;
+  freebsd_uthread_ops.to_has_registers = 1;
+  freebsd_uthread_ops.to_has_execution = 1;
+  freebsd_uthread_ops.to_has_thread_control = 0;
+  freebsd_uthread_ops.to_magic = OPS_MAGIC;
+  freebsd_uthread_ops.to_find_new_threads = freebsd_uthread_find_new_threads;
+  freebsd_uthread_ops.to_pid_to_str = freebsd_uthread_pid_to_str;
+#if 0
+  freebsd_uthread_vec.get_thread_info = freebsd_uthread_get_thread_info;
+#endif
+}
+
+void
+_initialize_freebsd_uthread ()
+{
+  init_freebsd_uthread_ops ();
+  add_target (&freebsd_uthread_ops);
+
+  target_new_objfile_chain = deprecated_target_new_objfile_hook;
+  deprecated_target_new_objfile_hook = freebsd_uthread_new_objfile;
+
+  child_suppress_run = 1;
+}
diff --git a/devel/gdb66/files/kvm-fbsd.c b/devel/gdb66/files/kvm-fbsd.c
new file mode 100644
index 000000000000..ad64dd9a3ab7
--- /dev/null
+++ b/devel/gdb66/files/kvm-fbsd.c
@@ -0,0 +1,886 @@
+/* Kernel core dump functions below target vector, for GDB.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
+   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.
+*/
+
+/* $FreeBSD$ */
+
+/*
+ * This works like "remote" but, you use it like this:
+ *     target kcore /dev/mem
+ * or
+ *     target kcore /var/crash/host/core.0
+ *
+ * This way makes it easy to short-circut the whole bfd monster,
+ * and direct the inferior stuff to our libkvm implementation.
+ *
+ */
+
+#include <sys/param.h>
+#include <machine/frame.h>
+#include <sys/proc.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/user.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <paths.h>
+
+#include "defs.h"
+#include "gdb_string.h"
+#include "frame.h"  /* required by inferior.h */
+#include "inferior.h"
+#include "symtab.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "command.h"
+#include "bfd.h"
+#include "target.h"
+#include "gdbcore.h"
+#include "regcache.h"
+#include <readline/tilde.h>
+
+#if __FreeBSD_version >= 500032
+static void
+kcore_files_info (struct target_ops *);
+
+static void
+kcore_close (int);
+
+static void
+get_kcore_registers (int);
+
+
+	/*
+static int
+xfer_mem (CORE_ADDR, char *, int, int, struct mem_attrib *,
+          struct target_ops *);
+	*/
+
+static int
+xfer_umem (CORE_ADDR, char *, int, int);
+
+static char		*core_file;
+static kvm_t		*core_kd;
+static struct pcb	cur_pcb;
+static struct kinfo_proc *cur_proc;
+
+static struct target_ops kcore_ops;
+
+int kernel_debugging;
+int kernel_writablecore;
+
+/* Read the "thing" at kernel address 'addr' into the space pointed to
+   by point.  The length of the "thing" is determined by the type of p.
+   Result is non-zero if transfer fails.  */
+
+#define kvread(addr, p) \
+  (target_read_memory ((CORE_ADDR) (addr), (char *) (p), sizeof (*(p))))
+
+static CORE_ADDR
+ksym_kernbase (void)
+{
+  static CORE_ADDR kernbase;
+  struct minimal_symbol *sym;
+
+  if (kernbase == 0)
+    {
+      sym = lookup_minimal_symbol ("kernbase", NULL, NULL);
+      if (sym == NULL) {
+	kernbase = KERNBASE;
+      } else {
+	kernbase = SYMBOL_VALUE_ADDRESS (sym);
+      }
+    }
+  return kernbase;
+}
+
+#define	KERNOFF		(ksym_kernbase ())
+#define	INKERNEL(x)	((x) >= KERNOFF)
+
+CORE_ADDR
+ksym_lookup(const char *name)
+{
+  struct minimal_symbol *sym;
+
+  sym = lookup_minimal_symbol (name, NULL, NULL);
+  if (sym == NULL)
+    error ("kernel symbol `%s' not found.", name);
+
+  return SYMBOL_VALUE_ADDRESS (sym);
+}
+
+/* Provide the address of an initial PCB to use.
+   If this is a crash dump, try for "dumppcb".
+   If no "dumppcb" or it's /dev/mem, use proc0.
+   Return the core address of the PCB we found.  */
+
+static CORE_ADDR
+initial_pcb (void)
+{
+  struct minimal_symbol *sym;
+  CORE_ADDR addr;
+  void *val;
+
+  /* Make sure things are open...  */
+  if (!core_kd || !core_file)
+    return (0);
+
+  /* If this is NOT /dev/mem try for dumppcb.  */
+  if (strncmp (core_file, _PATH_DEV, sizeof _PATH_DEV - 1))
+    {
+      sym = lookup_minimal_symbol ("dumppcb", NULL, NULL);
+      if (sym != NULL)
+	{
+	  addr = SYMBOL_VALUE_ADDRESS (sym);
+	  return (addr);
+	}
+  }
+
+  /* OK, just use thread0's pcb.  Note that curproc might
+     not exist, and if it does, it will point to gdb.
+     Therefore, just use proc0 and let the user set
+     some other context if they care about it.  */
+
+  addr = ksym_lookup ("thread0");
+  if (kvread (addr, &val))
+    {
+      error ("cannot read thread0 pointer at %lx\n", addr);
+      val = 0;
+    }
+  else
+    {
+      /* Read the PCB address in thread structure.  */
+      addr += offsetof (struct thread, td_pcb);
+      if (kvread (addr, &val))
+	{
+	  error ("cannot read thread0->td_pcb pointer at %lx\n", addr);
+	  val = 0;
+	}
+    }
+
+  /* thread0 is wholly in the kernel and cur_proc is only used for
+     reading user mem, so no point in setting this up.  */
+  cur_proc = 0;
+
+  return ((CORE_ADDR)val);
+}
+
+/* Set the current context to that of the PCB struct at the system address
+   passed.  */
+
+static int
+set_context (CORE_ADDR addr)
+{
+  CORE_ADDR procaddr = 0;
+
+  if (kvread (addr, &cur_pcb))
+    error ("cannot read pcb at %#lx", addr);
+
+  /* Fetch all registers from core file.  */
+  target_fetch_registers (-1);
+
+  /* Now, set up the frame cache, and print the top of stack.  */
+  flush_cached_frames ();
+/*DEO XXX
+  set_current_frame (create_new_frame (read_fp (), read_pc ()));
+  set_current_frame (create_new_frame (deprecated_read_fp (), read_pc ()));
+  select_frame (get_current_frame ());
+*/
+  print_stack_frame (get_selected_frame (), -1, 1);
+  return (0);
+}
+
+/* Discard all vestiges of any previous core file and mark data and stack
+   spaces as empty.  */
+
+/* ARGSUSED */
+static void
+kcore_close (int quitting)
+{
+
+  inferior_ptid = null_ptid;	/* Avoid confusion from thread stuff.  */
+
+  if (core_kd)
+    {
+      kvm_close (core_kd);
+      free (core_file);
+      core_file = NULL;
+      core_kd = NULL;
+    }
+}
+
+/* This routine opens and sets up the core file bfd.  */
+
+static void
+kcore_open (char *filename /* the core file */, int from_tty)
+{
+  kvm_t *kd;
+  const char *p;
+  struct cleanup *old_chain;
+  char buf[256], *cp;
+  int ontop;
+  CORE_ADDR addr;
+
+  target_preopen (from_tty);
+
+  /* The exec file is required for symbols.  */
+  if (exec_bfd == NULL)
+    error ("No kernel exec file specified");
+
+  if (core_kd)
+    {
+      error ("No core file specified."
+	     "  (Use `detach' to stop debugging a core file.)");
+      return;
+    }
+
+  if (!filename)
+    {
+      error ("No core file specified.");
+      return;
+    }
+
+  filename = tilde_expand (filename);
+  if (filename[0] != '/')
+    {
+      cp = concat (current_directory, "/", filename, NULL);
+      free (filename);
+      filename = cp;
+    }
+
+  old_chain = make_cleanup (free, filename);
+
+  kd = kvm_open (bfd_get_filename(exec_bfd), filename, NULL,
+		 kernel_writablecore ? O_RDWR: O_RDONLY, 0);
+  if (kd == NULL)
+    {
+      perror_with_name (filename);
+      return;
+    }
+
+  /* Looks semi-reasonable.  Toss the old core file and work on the new.  */
+
+  discard_cleanups (old_chain);		/* Don't free filename any more.  */
+  core_file = filename;
+  unpush_target (&kcore_ops);
+  ontop = !push_target (&kcore_ops);
+
+  /* Note unpush_target (above) calls kcore_close.  */
+  core_kd = kd;
+
+  /* Print out the panic string if there is one.  */
+  if (kvread (ksym_lookup ("panicstr"), &addr) == 0 &&
+      addr != 0 &&
+      target_read_memory (addr, buf, sizeof(buf)) == 0)
+    {
+
+      for (cp = buf; cp < &buf[sizeof(buf)] && *cp; cp++)
+	if (!isascii (*cp) || (!isprint (*cp) && !isspace (*cp)))
+	  *cp = '?';
+      *cp = '\0';
+      if (buf[0] != '\0')
+	printf_filtered ("panic: %s\n", buf);
+    }
+
+  /* Print all the panic messages if possible.  */
+  if (symfile_objfile != NULL)
+    {
+      printf ("panic messages:\n---\n");
+      snprintf (buf, sizeof buf,
+                "/sbin/dmesg -N %s -M %s | \
+                 /usr/bin/awk '/^(panic:|Fatal trap) / { printing = 1 } \
+                               { if (printing) print $0 }'",
+                symfile_objfile->name, filename);
+      fflush (stdout);
+      system (buf);
+      printf ("---\n");
+    }
+
+  if (!ontop)
+    {
+      warning ("you won't be able to access this core file until you terminate\n"
+		"your %s; do ``info files''", target_longname);
+      return;
+    }
+
+  /* Now, set up process context, and print the top of stack.  */
+  (void)set_context (initial_pcb());
+  print_stack_frame (get_selected_frame (),
+		     frame_relative_level (get_selected_frame ()), 1);
+}
+
+static void
+kcore_detach (char *args, int from_tty)
+{
+  if (args)
+    error ("Too many arguments");
+  unpush_target (&kcore_ops);
+  reinit_frame_cache ();
+  if (from_tty)
+    printf_filtered ("No kernel core file now.\n");
+}
+
+#ifdef __alpha__
+
+#include "alpha/tm-alpha.h"
+#include "alpha-tdep.h"
+
+#ifndef S0_REGNUM
+#define S0_REGNUM (ALPHA_T7_REGNUM+1)
+#endif
+
+static void
+fetch_kcore_registers (struct pcb *pcbp)
+{
+
+  /* First clear out any garbage.  */
+  memset (deprecated_registers, '\0', DEPRECATED_REGISTER_BYTES);
+
+  /* SP */
+  *(long *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (SP_REGNUM)] =
+    pcbp->pcb_hw.apcb_ksp;
+
+  /* S0 through S6 */
+  memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (S0_REGNUM)],
+          &pcbp->pcb_context[0], 7 * sizeof (long));
+
+  /* PC */
+  *(long *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)] =
+    pcbp->pcb_context[7];
+
+  deprecated_registers_fetched ();
+}
+
+
+CORE_ADDR
+fbsd_kern_frame_saved_pc (struct frame_info *fi)
+{
+  struct minimal_symbol *sym;
+  CORE_ADDR this_saved_pc;
+
+  this_saved_pc = DEPRECATED_FRAME_SAVED_PC(fi);
+
+  sym = lookup_minimal_symbol_by_pc (this_saved_pc);
+
+  if (sym != NULL &&
+      (strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentArith") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentIF") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentInt") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentMM") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentSys") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentUna") == 0 ||
+       strcmp (DEPRECATED_SYMBOL_NAME (sym), "XentRestart") == 0))
+    {
+      return (read_memory_integer (get_frame_base (fi) + 32 * 8, 8));
+    }
+  else
+    {
+      return (this_saved_pc);
+    }
+}
+
+#endif /* __alpha__ */
+
+#ifdef __i386__
+
+#include "i386-tdep.h"
+
+static CORE_ADDR
+ksym_maxuseraddr (void)
+{
+  static CORE_ADDR maxuseraddr;
+  struct minimal_symbol *sym;
+
+  if (maxuseraddr == 0)
+    {
+      sym = lookup_minimal_symbol ("PTmap", NULL, NULL);
+      if (sym == NULL) {
+	maxuseraddr = VM_MAXUSER_ADDRESS;
+      } else {
+	maxuseraddr = SYMBOL_VALUE_ADDRESS (sym);
+      }
+    }
+  return maxuseraddr;
+}
+
+
+/* Symbol names of kernel entry points.  Use special frames.  */
+#define	KSYM_TRAP	"calltrap"
+#define	KSYM_INTR	"Xintr"
+#define	KSYM_FASTINTR	"Xfastintr"
+#define	KSYM_OLDSYSCALL	"Xlcall_syscall"
+#define	KSYM_SYSCALL	"Xint0x80_syscall"
+
+/* The following is FreeBSD-specific hackery to decode special frames
+   and elide the assembly-language stub.  This could be made faster by
+   defining a frame_type field in the machine-dependent frame information,
+   but we don't think that's too important right now.  */
+enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
+
+CORE_ADDR
+fbsd_kern_frame_saved_pc (struct frame_info *fi)
+{
+  struct minimal_symbol *sym;
+  CORE_ADDR this_saved_pc;
+  enum frametype frametype;
+
+  this_saved_pc = read_memory_integer (get_frame_base (fi) + 4, 4);
+  sym = lookup_minimal_symbol_by_pc (this_saved_pc);
+  frametype = tf_normal;
+  if (sym != NULL)
+    {
+      if (strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_TRAP) == 0)
+	frametype = tf_trap;
+      else
+	if (strncmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_INTR,
+	    strlen (KSYM_INTR)) == 0 || strncmp (DEPRECATED_SYMBOL_NAME(sym),
+	    KSYM_FASTINTR, strlen (KSYM_FASTINTR)) == 0)
+	  frametype = tf_interrupt;
+      else
+	if (strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_SYSCALL) == 0 ||
+	    strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_OLDSYSCALL) == 0)
+	  frametype = tf_syscall;
+    }
+
+  switch (frametype)
+    {
+      default:
+      case tf_normal:
+        return (this_saved_pc);
+#define oEIP   offsetof (struct trapframe, tf_eip)
+
+      case tf_trap:
+	return (read_memory_integer (get_frame_base (fi) + 8 + oEIP, 4));
+
+      case tf_interrupt:
+	return (read_memory_integer (get_frame_base (fi) + 12 + oEIP, 4));
+
+      case tf_syscall:
+	return (read_memory_integer (get_frame_base (fi) + 8 + oEIP, 4));
+#undef oEIP
+    }
+}
+
+static void
+fetch_kcore_registers (struct pcb *pcb)
+{
+  int i;
+  int noreg;
+
+  /* Get the register values out of the sys pcb and store them where
+     `read_register' will find them.  */
+  /*
+   * XXX many registers aren't available.
+   * XXX for the non-core case, the registers are stale - they are for
+   *     the last context switch to the debugger.
+   * XXX gcc's register numbers aren't all #defined in tm-i386.h.
+   */
+  noreg = 0;
+  for (i = 0; i < 3; ++i)		/* eax,ecx,edx */
+    supply_register (i, (char *)&noreg);
+
+  /* DEO:XXX use SP_REGNUM and PC_REGNUM -- this is GDB_MULTI_ARCH */
+  supply_register (3, (char *) &pcb->pcb_ebx);
+  supply_register (SP_REGNUM, (char *) &pcb->pcb_esp);
+  supply_register (I386_EBP_REGNUM, (char *) &pcb->pcb_ebp);
+  supply_register (6, (char *) &pcb->pcb_esi);
+  supply_register (7, (char *) &pcb->pcb_edi);
+  supply_register (PC_REGNUM, (char *) &pcb->pcb_eip);
+
+  for (i = 9; i < 14; ++i)		/* eflags, cs, ss, ds, es, fs */
+    supply_register (i, (char *) &noreg);
+  supply_register (15, (char *) &pcb->pcb_gs);
+
+  /* XXX 80387 registers?  */
+}
+
+#endif /* __i386__ */
+
+#ifdef __amd64__
+
+#include "amd64-tdep.h"
+
+static CORE_ADDR
+ksym_maxuseraddr (void)
+{
+  static CORE_ADDR maxuseraddr;
+  struct minimal_symbol *sym;
+
+  if (maxuseraddr == 0)
+    {
+      sym = lookup_minimal_symbol ("PTmap", NULL, NULL);
+      if (sym == NULL) {
+	maxuseraddr = VM_MAXUSER_ADDRESS;
+      } else {
+	maxuseraddr = SYMBOL_VALUE_ADDRESS (sym);
+      }
+    }
+  return maxuseraddr;
+}
+
+
+/* Symbol names of kernel entry points.  Use special frames.  */
+#define	KSYM_TRAP	"calltrap"
+#define	KSYM_INTR	"Xintr"
+#define	KSYM_FASTINTR	"Xfastintr"
+#define	KSYM_OLDSYSCALL	"Xlcall_syscall"
+#define	KSYM_SYSCALL	"Xint0x80_syscall"
+
+/* The following is FreeBSD-specific hackery to decode special frames
+   and elide the assembly-language stub.  This could be made faster by
+   defining a frame_type field in the machine-dependent frame information,
+   but we don't think that's too important right now.  */
+enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
+
+CORE_ADDR
+fbsd_kern_frame_saved_pc (struct frame_info *fi)
+{
+  struct minimal_symbol *sym;
+  CORE_ADDR this_saved_pc;
+  enum frametype frametype;
+
+  this_saved_pc = read_memory_integer (get_frame_base (fi) + 4, 4);
+  sym = lookup_minimal_symbol_by_pc (this_saved_pc);
+  frametype = tf_normal;
+  if (sym != NULL)
+    {
+      if (strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_TRAP) == 0)
+	frametype = tf_trap;
+      else
+	if (strncmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_INTR,
+	    strlen (KSYM_INTR)) == 0 || strncmp (DEPRECATED_SYMBOL_NAME(sym),
+	    KSYM_FASTINTR, strlen (KSYM_FASTINTR)) == 0)
+	  frametype = tf_interrupt;
+      else
+	if (strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_SYSCALL) == 0 ||
+	    strcmp (DEPRECATED_SYMBOL_NAME (sym), KSYM_OLDSYSCALL) == 0)
+	  frametype = tf_syscall;
+    }
+
+  switch (frametype)
+    {
+      default:
+      case tf_normal:
+        return (this_saved_pc);
+#define oEIP   offsetof (struct trapframe, tf_rip)
+
+      case tf_trap:
+	return (read_memory_integer (get_frame_base (fi) + 8 + oEIP, 4));
+
+      case tf_interrupt:
+	return (read_memory_integer (get_frame_base (fi) + 12 + oEIP, 4));
+
+      case tf_syscall:
+	return (read_memory_integer (get_frame_base (fi) + 8 + oEIP, 4));
+#undef oEIP
+    }
+}
+
+static void
+fetch_kcore_registers (struct pcb *pcb)
+{
+  int i;
+  int noreg;
+
+  /* Get the register values out of the sys pcb and store them where
+     `read_register' will find them.  */
+  /*
+   * XXX many registers aren't available.
+   * XXX for the non-core case, the registers are stale - they are for
+   *     the last context switch to the debugger.
+   * XXX gcc's register numbers aren't all #defined in tm-amd64.h.
+   */
+  noreg = 0;
+  for (i = 0; i < 3; ++i)		/* eax,ecx,edx */
+    supply_register (i, (char *)&noreg);
+
+  /* DEO:XXX use SP_REGNUM and PC_REGNUM -- this is GDB_MULTI_ARCH */
+  supply_register (3, (char *) &pcb->pcb_rbx);
+  supply_register (SP_REGNUM, (char *) &pcb->pcb_rsp);
+  supply_register (AMD64_RBP_REGNUM, (char *) &pcb->pcb_rbp);
+  supply_register (PC_REGNUM, (char *) &pcb->pcb_rip);
+
+  for (i = 9; i < 14; ++i)		/* rflags, cs, ss, ds, es, fs */
+    supply_register (i, (char *) &noreg);
+  supply_register (15, (char *) &pcb->pcb_gs);
+
+  /* XXX 80387 registers?  */
+}
+
+#endif /* __amd64__ */
+
+#ifdef __sparc64__
+
+#include "sparc-tdep.h"
+
+#define	SPARC_INTREG_SIZE	8
+
+static void
+fetch_kcore_registers (struct pcb *pcbp)
+{
+  static struct frame top;
+  CORE_ADDR f_addr;
+  int i;
+
+  /* Get the register values out of the sys pcb and store them where
+     `read_register' will find them.  */
+  /*
+   * XXX many registers aren't available.
+   * XXX for the non-core case, the registers are stale - they are for
+   *     the last context switch to the debugger.
+   * XXX do something with the floating-point registers?
+   */
+  supply_register (SP_REGNUM, &pcbp->pcb_sp);
+  supply_register (PC_REGNUM, &pcbp->pcb_pc);
+  f_addr = extract_unsigned_integer (&pcbp->pcb_sp, SPARC_INTREG_SIZE);
+  /* Load the previous frame by hand (XXX) and supply it. */
+  read_memory (f_addr + SPOFF, (char *)&top, sizeof (top));
+  for (i = 0; i < 8; i++)
+    supply_register (i + SPARC_L0_REGNUM, &top.fr_local[i]);
+  for (i = 0; i < 8; i++)
+    supply_register (i + SPARC_I0_REGNUM, &top.fr_in[i]);
+}
+
+CORE_ADDR
+fbsd_kern_frame_saved_pc (struct frame_info *fi)
+{
+  struct minimal_symbol *sym;
+  CORE_ADDR frame, pc_addr, pc;
+  char *buf;
+
+  buf = alloca (MAX_REGISTER_SIZE); //or use DEPRECATED_MAX_REGISTER_RAW_SIZE
+  /* XXX: duplicates fi->extra_info->bottom. */
+  frame = (get_next_frame (fi) != NULL) ? get_frame_base (get_next_frame (fi)) : read_sp ();
+  pc_addr = frame + offsetof (struct frame, fr_in[7]);
+
+#define	READ_PC(pc, a, b) do { \
+  read_memory (a, b, SPARC_INTREG_SIZE); \
+  pc = extract_unsigned_integer (b, SPARC_INTREG_SIZE); \
+} while (0)
+
+  READ_PC (pc, pc_addr, buf);
+
+  sym = lookup_minimal_symbol_by_pc (pc);
+  if (sym != NULL)
+    {
+      if (strncmp (DEPRECATED_SYMBOL_NAME (sym), "tl0_", 4) == 0 ||
+	  strcmp (DEPRECATED_SYMBOL_NAME (sym), "btext") == 0 ||
+	  strcmp (DEPRECATED_SYMBOL_NAME (sym), "mp_startup") == 0 ||
+	  strcmp (DEPRECATED_SYMBOL_NAME (sym), "fork_trampoline") == 0)
+        {
+	  /*
+	   * Ugly kluge: user space addresses aren't separated from kernel
+	   * ones by range; if encountering a trap from user space, just
+	   * return a 0 to stop the trace.
+	   * Do the same for entry points of kernel processes to avoid
+	   * printing garbage.
+	   */
+	  pc = 0;
+        }
+      if (strncmp (DEPRECATED_SYMBOL_NAME (sym), "tl1_", 4) == 0)
+        {
+          pc_addr = get_frame_base (fi) + sizeof (struct frame) +
+	    offsetof (struct trapframe, tf_tpc);
+          READ_PC (pc, pc_addr, buf);
+	}
+    }
+  return (pc);
+}
+
+#endif /* __sparc64__ */
+
+/* Get the registers out of a core file.  This is the machine-
+   independent part.  Fetch_core_registers is the machine-dependent
+   part, typically implemented in the xm-file for each architecture.  */
+
+/* We just get all the registers, so we don't use regno.  */
+
+/* ARGSUSED */
+static void
+get_kcore_registers (int regno)
+{
+
+  /* XXX - Only read the pcb when set_context() is called.
+     When looking at a live kernel this may be a problem,
+     but the user can do another "proc" or "pcb" command to
+     grab a new copy of the pcb...  */
+
+  /* Zero out register set then fill in the ones we know about.  */
+  fetch_kcore_registers (&cur_pcb);
+}
+
+static void
+kcore_files_info (t)
+  struct target_ops *t;
+{
+  printf_filtered ("\t`%s'\n", core_file);
+}
+
+/* If mourn is being called in all the right places, this could be say
+   `gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
+
+	/*
+static int
+ignore (CORE_ADDR addr, char *contents)
+{
+  return 0;
+}
+	*/
+
+static int
+xfer_kmem (CORE_ADDR memaddr, char *myaddr, int len, int write,
+	   struct mem_attrib *attrib, struct target_ops *target)
+{
+  int n;
+
+
+  if (!INKERNEL (memaddr))
+    return xfer_umem (memaddr, myaddr, len, write);
+
+  if (core_kd == NULL)
+    return 0;
+
+  if (write)
+    n = kvm_write (core_kd, memaddr, myaddr, len);
+  else
+    n = kvm_read (core_kd, memaddr, myaddr, len) ;
+  if (n < 0) {
+    fprintf_unfiltered (gdb_stderr, "can not access 0x%lx, %s\n",
+			memaddr, kvm_geterr (core_kd));
+    n = 0;
+  }
+
+  return n;
+}
+
+
+static int
+xfer_umem (CORE_ADDR memaddr, char *myaddr, int len, int write /* ignored */)
+{
+  int n = 0;
+
+  if (cur_proc == 0)
+    {
+      error ("---Can't read userspace from dump, or kernel process---\n");
+      return 0;
+    }
+
+  if (write)
+    error ("kvm_uwrite unimplemented\n");
+  else
+    n = kvm_uread (core_kd, cur_proc, memaddr, myaddr, len) ;
+
+  if (n < 0)
+    return 0;
+
+  return n;
+}
+
+static void
+set_proc_cmd (char *arg, int from_tty)
+{
+  CORE_ADDR addr, pid_addr, first_td;
+  void *val;
+  struct kinfo_proc *kp;
+  int cnt;
+  pid_t pid;
+
+  if (!arg)
+    error_no_arg ("proc address for the new context");
+
+  if (core_kd == NULL)
+    error ("no kernel core file");
+
+  addr = (CORE_ADDR) parse_and_eval_address (arg);
+
+  if (!INKERNEL (addr))
+    {
+      kp = kvm_getprocs (core_kd, KERN_PROC_PID, addr, &cnt);
+      if (!cnt)
+	error ("invalid pid");
+      addr = (CORE_ADDR)kp->ki_paddr;
+      cur_proc = kp;
+    }
+  else
+    {
+      /* Update cur_proc.  */
+      pid_addr = addr + offsetof (struct proc, p_pid);
+      if (kvread (pid_addr, &pid))
+	error ("cannot read pid ptr");
+      cur_proc = kvm_getprocs (core_kd, KERN_PROC_PID, pid, &cnt);
+      if (!cnt)
+	error("invalid pid");
+    }
+
+  /* Find the first thread in the process.  XXXKSE  */
+  addr += offsetof (struct proc, p_threads.tqh_first);
+  if (kvread (addr, &first_td))
+    error ("cannot read thread ptr");
+
+  /* Read the PCB address in thread structure. */
+  addr = first_td + offsetof (struct thread, td_pcb);
+  if (kvread (addr, &val))
+    error("cannot read pcb ptr");
+
+  /* Read the PCB address in proc structure. */
+  if (set_context ((CORE_ADDR) val))
+    error ("invalid proc address");
+}
+#else
+int kernel_debugging = 0;
+int kernel_writablecore = 0;
+
+CORE_ADDR
+fbsd_kern_frame_saved_pc (struct frame_info *fi)
+{
+  return 0;
+}
+#endif
+
+void
+_initialize_kcorelow (void)
+{
+#if __FreeBSD_version >= 500032
+  kcore_ops.to_shortname = "kcore";
+  kcore_ops.to_longname = "Kernel core dump file";
+  kcore_ops.to_doc =
+    "Use a core file as a target.  Specify the filename of the core file.";
+  kcore_ops.to_open = kcore_open;
+  kcore_ops.to_close = kcore_close;
+  kcore_ops.to_attach = find_default_attach;
+  kcore_ops.to_detach = kcore_detach;
+  kcore_ops.to_fetch_registers = get_kcore_registers;
+  kcore_ops.to_xfer_memory = xfer_kmem;
+  kcore_ops.to_files_info = kcore_files_info;
+  kcore_ops.to_create_inferior = find_default_create_inferior;
+  kcore_ops.to_stratum = kcore_stratum;
+  kcore_ops.to_has_memory = 1;
+  kcore_ops.to_has_stack = 1;
+  kcore_ops.to_has_registers = 1;
+  kcore_ops.to_magic = OPS_MAGIC;
+
+  add_target (&kcore_ops);
+  add_com ("proc", class_obscure, set_proc_cmd, "Set current process context");
+#endif
+}
diff --git a/devel/gdb66/files/nm-fbsd.h b/devel/gdb66/files/nm-fbsd.h
new file mode 100644
index 000000000000..b0d784f77c00
--- /dev/null
+++ b/devel/gdb66/files/nm-fbsd.h
@@ -0,0 +1,39 @@
+#ifndef CONFIG_NM_FBSD_H
+#define CONFIG_NM_FBSD_H
+
+/* $FreeBSD$ */
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+extern int kernel_debugging;
+extern int kernel_writablecore;
+
+CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *frame);
+
+#if __FreeBSD_version >= 500032
+#define KGDB 1
+#define ADDITIONAL_OPTIONS \
+       {"kernel", no_argument, &kernel_debugging, 1}, \
+       {"k", no_argument, &kernel_debugging, 1}, \
+       {"wcore", no_argument, &kernel_writablecore, 1}, \
+       {"w", no_argument, &kernel_writablecore, 1},
+
+#define ADDITIONAL_OPTION_HELP \
+       "\
+  --kernel           Enable kernel debugging.\n\
+  --wcore            Make core file writable (only works for /dev/mem).\n\
+                     This option only works while debugging a kernel !!\n\
+"
+
+#define DEFAULT_PROMPT kernel_debugging?"(kgdb) ":"(gdb) "
+
+/* misuse START_PROGRESS to test whether we're running as kgdb */   
+/* START_PROGRESS is called at the top of main */
+#undef START_PROGRESS
+#define START_PROGRESS(STR,N) \
+  if (!strcmp (STR, "kgdb")) \
+     kernel_debugging = 1;
+#endif
+#endif /* CONFIG_NM_FBSD_H */
diff --git a/devel/gdb66/files/patch-Makefile.in b/devel/gdb66/files/patch-Makefile.in
new file mode 100644
index 000000000000..33ed469d5ff3
--- /dev/null
+++ b/devel/gdb66/files/patch-Makefile.in
@@ -0,0 +1,11 @@
+--- gdb/Makefile.in.orig	Fri Oct 17 14:44:26 2003
++++ gdb/Makefile.in	Thu Jan 15 11:41:06 2004
+@@ -119,4 +119,4 @@
+-READLINE_DIR = ../readline
+-READLINE = $(READLINE_DIR)/libreadline.a
+-READLINE_SRC = $(srcdir)/$(READLINE_DIR)
+-READLINE_CFLAGS = -I$(READLINE_SRC)/..
++#READLINE_DIR = ../readline
++READLINE = -lreadline
++#READLINE_SRC = $(srcdir)/$(READLINE_DIR)
++#READLINE_CFLAGS = -I$(READLINE_SRC)/..
diff --git a/devel/gdb66/files/patch-amd64-tdep.c b/devel/gdb66/files/patch-amd64-tdep.c
new file mode 100644
index 000000000000..88305cc9a1cf
--- /dev/null
+++ b/devel/gdb66/files/patch-amd64-tdep.c
@@ -0,0 +1,15 @@
+--- gdb/amd64-tdep.c.orig	Fri Apr  9 16:24:05 2004
++++ gdb/amd64-tdep.c	Wed May  5 10:56:22 2004
+@@ -126,6 +126,12 @@
+ #define AMD64_NUM_REGS \
+   (sizeof (amd64_register_info) / sizeof (amd64_register_info[0]))
+ 
++int
++amd64_num_regs(void)
++{
++  return AMD64_NUM_REGS;
++}
++
+ /* Return the name of register REGNUM.  */
+ 
+ static const char *
diff --git a/devel/gdb66/files/patch-amd64-tdep.h b/devel/gdb66/files/patch-amd64-tdep.h
new file mode 100644
index 000000000000..2ad017060331
--- /dev/null
+++ b/devel/gdb66/files/patch-amd64-tdep.h
@@ -0,0 +1,16 @@
+--- gdb/amd64-tdep.h.orig	Wed May  5 10:48:28 2004
++++ gdb/amd64-tdep.h	Wed May  5 11:02:33 2004
+@@ -59,6 +59,13 @@
+ /* Number of general purpose registers.  */
+ #define AMD64_NUM_GREGS		24
+ 
++#define AMD64_NUM_FREGS		16
++#define AMD64_NUM_XREGS		17
++#define AMD64_NUM_REGS_TOTAL	(AMD64_NUM_GREGS + AMD64_NUM_FREGS \
++				 + AMD64_NUM_XREGS)
++
++extern int amd64_num_regs (void);
++
+ extern void amd64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch);
+ 
+ /* Fill register REGNUM in REGCACHE with the appropriate
diff --git a/devel/gdb66/files/patch-config_alpha_nm-fbsd.h b/devel/gdb66/files/patch-config_alpha_nm-fbsd.h
index d364e03cd2ec..2f7e710248ab 100644
--- a/devel/gdb66/files/patch-config_alpha_nm-fbsd.h
+++ b/devel/gdb66/files/patch-config_alpha_nm-fbsd.h
@@ -1,11 +1,10 @@
---- gdb/config/alpha/nm-fbsd.h	Tue Mar  6 00:21:21 2001
-+++ gdb/config/alpha/nm-fbsd.h	Sun Oct 13 12:23:51 2002
-@@ -22,6 +22,8 @@
- #ifndef NM_FBSD_H
- #define NM_FBSD_H
+--- gdb/config/alpha/nm-fbsd.h.orig	Sat Mar 13 05:07:19 2004
++++ gdb/config/alpha/nm-fbsd.h	Sat Apr 10 00:49:21 2004
+@@ -25,6 +25,7 @@
  
+ /* Get generic BSD native definitions.  */
+ #include "config/nm-bsd.h"
 +#include "config/nm-fbsd.h"
-+
- /* Type of the third argument to the `ptrace' system call.  */
- #define PTRACE_ARG3_TYPE caddr_t
  
+ /* The Alpha does not step over a breakpoint.  */
+ #define CANNOT_STEP_BREAKPOINT 1
diff --git a/devel/gdb66/files/patch-config_i386_fbsd.mh b/devel/gdb66/files/patch-config_i386_fbsd.mh
index b9645a9b1765..2215bd724dfe 100644
--- a/devel/gdb66/files/patch-config_i386_fbsd.mh
+++ b/devel/gdb66/files/patch-config_i386_fbsd.mh
@@ -1,10 +1,10 @@
---- gdb/config/i386/fbsd.mh	Sat May 11 10:22:27 2002
-+++ gdb/config/i386/fbsd.mh	Sun Oct 13 11:50:47 2002
-@@ -4,4 +4,6 @@
- 
+--- gdb/config/i386/fbsd.mh.orig	Sun Feb 22 08:20:22 2004
++++ gdb/config/i386/fbsd.mh	Sat Apr 10 01:00:26 2004
+@@ -3,3 +3,7 @@
+ 	i386-nat.o i386bsd-nat.o i386fbsd-nat.o gcore.o fbsd-proc.o
  NAT_FILE= nm-fbsd.h
- # NOTE: Do not spread NATDEPFILES over several lines - it hurts BSD make.
--NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i386bsd-nat.o i386fbsd-nat.o gcore.o fbsd-proc.o
-+NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i386bsd-nat.o i386fbsd-nat.o gcore.o fbsd-proc.o kvm-fbsd.o freebsd-uthread.o
+ XM_FILE= xm-i386.h
 +
++#	kgdb support
++NATDEPFILES+= kvm-fbsd.o freebsd-uthread.o
 +NAT_CLIBS= -lkvm
diff --git a/devel/gdb66/files/patch-config_i386_fbsd64.mh b/devel/gdb66/files/patch-config_i386_fbsd64.mh
new file mode 100644
index 000000000000..ee00c31eb5a4
--- /dev/null
+++ b/devel/gdb66/files/patch-config_i386_fbsd64.mh
@@ -0,0 +1,10 @@
+--- gdb/config/i386/fbsd64.mh.orig	Sun Feb 22 08:20:22 2004
++++ gdb/config/i386/fbsd64.mh	Fri Apr 23 12:28:40 2004
+@@ -3,3 +3,7 @@
+ 	amd64-nat.o amd64bsd-nat.o amd64fbsd-nat.o gcore.o fbsd-proc.o
+ NAT_FILE= nm-fbsd64.h
+ XM_FILE= xm-i386.h
++
++#	kgdb support
++NATDEPFILES+= kvm-fbsd.o freebsd-uthread.o
++NAT_CLIBS= -lkvm
diff --git a/devel/gdb66/files/patch-config_i386_nm-fbsd.h b/devel/gdb66/files/patch-config_i386_nm-fbsd.h
index efd2ce270e6f..781f06968469 100644
--- a/devel/gdb66/files/patch-config_i386_nm-fbsd.h
+++ b/devel/gdb66/files/patch-config_i386_nm-fbsd.h
@@ -1,10 +1,12 @@
---- gdb/config/i386/nm-fbsd.h	Fri Jun 28 11:44:49 2002
-+++ gdb/config/i386/nm-fbsd.h	Sun Oct 13 10:53:27 2002
-@@ -26,6 +26,7 @@
+--- gdb/config/i386/nm-fbsd.h.orig	Fri Jun 28 11:44:49 2002
++++ gdb/config/i386/nm-fbsd.h	Sun Jan 18 20:50:33 2004
+@@ -26,6 +26,9 @@
  #define I386_USE_GENERIC_WATCHPOINTS
  #endif
  
++/* Get generic FreeBSD native definitions.  */
 +#include "config/nm-fbsd.h"
++
  #include "i386/nm-i386.h"
  
  #ifdef HAVE_SYS_PARAM_H
diff --git a/devel/gdb66/files/patch-config_nm-fbsd.h b/devel/gdb66/files/patch-config_nm-fbsd.h
deleted file mode 100644
index 9b6c033446c5..000000000000
--- a/devel/gdb66/files/patch-config_nm-fbsd.h
+++ /dev/null
@@ -1,39 +0,0 @@
---- gdb/config/nm-fbsd.h	Fri Jan  3 09:33:00 2003
-+++ gdb/config/nm-fbsd.h	Fri Jan  3 09:36:00 2003
-@@ -0,0 +1,36 @@
-+#ifndef CONFIG_NM_FBSD_H
-+#define CONFIG_NM_FBSD_H
-+
-+#ifdef HAVE_SYS_PARAM_H
-+#include <sys/param.h>
-+#endif
-+
-+extern int kernel_debugging;
-+extern int kernel_writablecore;
-+
-+CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *frame);
-+
-+#if __FreeBSD_version >= 500032
-+#define ADDITIONAL_OPTIONS \
-+       {"kernel", no_argument, &kernel_debugging, 1}, \
-+       {"k", no_argument, &kernel_debugging, 1}, \
-+       {"wcore", no_argument, &kernel_writablecore, 1}, \
-+       {"w", no_argument, &kernel_writablecore, 1},
-+
-+#define ADDITIONAL_OPTION_HELP \
-+       "\
-+  --kernel           Enable kernel debugging.\n\
-+  --wcore            Make core file writable (only works for /dev/mem).\n\
-+                     This option only works while debugging a kernel !!\n\
-+"
-+
-+#define DEFAULT_PROMPT kernel_debugging?"(kgdb) ":"(gdb) "
-+
-+/* misuse START_PROGRESS to test whether we're running as kgdb */   
-+/* START_PROGRESS is called at the top of main */
-+#undef START_PROGRESS
-+#define START_PROGRESS(STR,N) \
-+  if (!strcmp (STR, "kgdb")) \
-+     kernel_debugging = 1;
-+#endif
-+#endif /* CONFIG_NM_FBSD_H */
diff --git a/devel/gdb66/files/patch-config_sparc_fbsd.mh b/devel/gdb66/files/patch-config_sparc_fbsd.mh
index 1a23ca92d26f..c9c6de6e4302 100644
--- a/devel/gdb66/files/patch-config_sparc_fbsd.mh
+++ b/devel/gdb66/files/patch-config_sparc_fbsd.mh
@@ -1,13 +1,12 @@
---- gdb/config/sparc/fbsd.mh.orig	Wed Mar 13 03:20:24 2002
-+++ gdb/config/sparc/fbsd.mh	Thu Oct 17 05:59:25 2002
-@@ -19,7 +19,7 @@
- #  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
- 
- # Host: FreeBSD/sparc64
--NATDEPFILES= sparc-nat.o \
--	corelow.o fork-child.o infptrace.o inftarg.o \
--	solib.o solib-svr4.o solib-legacy.o
-+NATDEPFILES= fork-child.o infptrace.o inftarg.o sparc64nbsd-nat.o \
-+	solib.o solib-svr4.o solib-legacy.o kvm-fbsd.o
+--- gdb/config/sparc/fbsd.mh.orig	Tue Mar 12 19:20:24 2002
++++ gdb/config/sparc/fbsd.mh	Tue Jan 20 08:28:50 2004
+@@ -23,3 +23,9 @@
+ 	corelow.o fork-child.o infptrace.o inftarg.o \
+ 	solib.o solib-svr4.o solib-legacy.o
  NAT_FILE= nm-fbsd.h
++
++#	kgdb support
++NATDEPFILES+= kvm-fbsd.o freebsd-uthread.o
 +NAT_CLIBS= -lkvm
++#	/proc support
++NATDEPFILES+= fbsd-proc.o # sparc-linux-nat.o
diff --git a/devel/gdb66/files/patch-config_sparc_fbsd.mt b/devel/gdb66/files/patch-config_sparc_fbsd.mt
index 3147c4ef30e2..a76e2c5eea9e 100644
--- a/devel/gdb66/files/patch-config_sparc_fbsd.mt
+++ b/devel/gdb66/files/patch-config_sparc_fbsd.mt
@@ -1,10 +1,7 @@
---- gdb/config/sparc/fbsd.mt.orig	Wed Mar 13 03:20:24 2002
-+++ gdb/config/sparc/fbsd.mt	Thu Oct 17 05:59:59 2002
-@@ -19,5 +19,6 @@
- #  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
- 
+--- gdb/config/sparc/fbsd.mt.orig	Sat Jan  3 02:08:45 2004
++++ gdb/config/sparc/fbsd.mt	Sat Jan 24 20:10:22 2004
+@@ -1,3 +1,4 @@
  # Target: FreeBSD/sparc64
--TDEPFILES= sparc-tdep.o solib.o solib-svr4.o solib-legacy.o 
-+TDEPFILES= sparc-tdep.o sparcnbsd-tdep.o nbsd-tdep.o corelow.o solib.o \
-+	solib-svr4.o solib-legacy.o
+ TDEPFILES= sparc-tdep.o sparc64-tdep.o sparc64fbsd-tdep.o corelow.o
++###TDEPFILES+= sparcnbsd-tdep.o nbsd-tdep.o solib.o solib-svr4.o solib-legacy.o
  TM_FILE= tm-fbsd.h
diff --git a/devel/gdb66/files/patch-config_sparc_nm-fbsd.h b/devel/gdb66/files/patch-config_sparc_nm-fbsd.h
index 4ab0b5ada57d..f5e005f122c9 100644
--- a/devel/gdb66/files/patch-config_sparc_nm-fbsd.h
+++ b/devel/gdb66/files/patch-config_sparc_nm-fbsd.h
@@ -1,72 +1,33 @@
---- gdb/config/sparc/nm-fbsd.h.orig	Fri Mar  1 18:35:24 2002
-+++ gdb/config/sparc/nm-fbsd.h	Tue Oct 22 16:33:14 2002
-@@ -32,36 +32,45 @@
- #define ATTACH_DETACH
- 
+--- gdb/config/sparc/nm-fbsd.h.orig	Sat Mar 13 05:07:20 2004
++++ gdb/config/sparc/nm-fbsd.h	Sat Apr 10 01:06:19 2004
+@@ -24,9 +24,30 @@
  
--/* Shared library support.  */
-+#include "regcache.h"
-+
-+/* Get generic FreeBSD native definitions. */
-+
+ /* Get generic BSD native definitions.  */
+ #include "config/nm-bsd.h"
++/* Get generic FreeBSD native definitions.  */
 +#include "config/nm-fbsd.h"
-+
-+/* Shared library support. */
  
- #define SVR4_SHARED_LIBS
+ /* Shared library support.  */
  
- #include "solib.h"		/* Support for shared libraries. */
- #include "elf/common.h"		/* Additional ELF shared library info. */
- 
--/* Make things match up with what is expected in sparc-nat.c.  */
-+/* Before storing, we need to read all the registers.  */
+ #include "solib.h"
 +
-+#define CHILD_PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
++/* Override child_pid_to_exec_file in 'inftarg.c'.  */
++#define CHILD_PID_TO_EXEC_FILE
 +
-+#define REG32_OFFSET_GLOBAL	(0)
-+#define REG32_OFFSET_OUT	(32)
-+#define REG32_OFFSET_NPC	(96)
-+#define REG32_OFFSET_PC		(100)
-+#define REG32_OFFSET_PSR	(104)
-+#define REG32_OFFSET_Y		(112)
-+#define REG32_SIZE		(128)
-+#define FPREG32_SIZE		(136)
++/* FreeBSD has a /proc.  */
++#define USE_PROC_FS
 +
-+#define REG64_OFFSET_GLOBAL	(0)
-+#define REG64_OFFSET_OUT	(64)
-+#define REG64_OFFSET_NPC	(192)
-+#define REG64_OFFSET_PC		(200)
-+#define REG64_OFFSET_TSTATE	(208)
-+#define REG64_OFFSET_Y		(224)
-+#define REG64_SIZE		(256)
-+#define FPREG64_SIZE		(272)
++/*	DEO:XXX where did the rest of this file go vs 6.0.0.90 ??	*/
 +
-+#define	JB32_OFFSET_PC		REG32_OFFSET_PC
-+#define	JB64_OFFSET_PC		REG64_OFFSET_PC
- 
--#define PTRACE_GETREGS	 PT_GETREGS
--#define PTRACE_SETREGS	 PT_SETREGS
--#define PTRACE_GETFPREGS PT_GETFPREGS
--#define PTRACE_SETFPREGS PT_SETFPREGS
--
--#define GDB_GREGSET_T	struct reg
--#define GDB_FPREGSET_T	struct fpreg
--
--#define regs		trapframe
--#define r_g1		tf_global[1]
--#define r_ps		tf_tstate
--#define r_pc		tf_tpc
--#define r_npc		tf_tnpc
--#define r_y		tf_y
--
--#define FPU_FSR_TYPE	unsigned long
--#define fp_status	fpreg		/* our reg.h */
--#define fpu		fpreg		/* our reg.h */
--#define fpu_regs	fr_regs		/* one field of fpu_fr on Solaris */
--#define fpu_fr		fr_regs		/* a union w/in struct fpu on Solaris */
--#define fpu_fsr		fr_fsr
--#define Fpu_fsr		fr_fsr
-+#define	reg64	reg
-+#define	fpreg64	fpreg
++/* Solaris compatability.  */
++#define R_PC		r_pc
++#define R_nPC		r_npc
++#define R_Y		r_y
++#define R_I7		/* ?? */
++#define pr_fr		fpu_fr
++#define pr_fsr		fpu_fsr
++#define regp		/* ?? */
++#if 0
++#endif
  
- #endif /* NM_FBSD_H */
+ #endif /* nm-fbsd.h */
diff --git a/devel/gdb66/files/patch-config_sparc_tm-fbsd.h b/devel/gdb66/files/patch-config_sparc_tm-fbsd.h
index 4e15435b3505..ccca90492338 100644
--- a/devel/gdb66/files/patch-config_sparc_tm-fbsd.h
+++ b/devel/gdb66/files/patch-config_sparc_tm-fbsd.h
@@ -1,17 +1,12 @@
---- gdb/config/sparc/tm-fbsd.h.orig	Fri Mar  1 18:35:24 2002
-+++ gdb/config/sparc/tm-fbsd.h	Thu Oct 17 06:01:10 2002
-@@ -22,13 +22,7 @@
- #define TM_FBSD_H
+--- gdb/config/sparc/tm-fbsd.h.orig	Sat Jan 24 20:06:31 2004
++++ gdb/config/sparc/tm-fbsd.h	Sat Jan 24 20:07:02 2004
+@@ -24,4 +24,9 @@
  
- #define SVR4_SHARED_LIBS
-+#include "sparc/tm-sp64.h"		/* sets GDB_MULTI_ARCH */
- #include "solib.h"			/* Support for shared libraries. */
--#include "sparc/tm-sp64.h"
--
--/* Number of traps that happen between exec'ing the shell to run an
--   inferior, and when we finally get to the inferior code.  The
--   default is right for FreeBSD.  */
--
--#undef START_INFERIOR_TRAPS_EXPECTED
+ #define GDB_MULTI_ARCH GDB_MULTI_ARCH_TM
  
- #endif /* TM_FBSD_H */
++#if 0
++#define SVR4_SHARED_LIBS
++#include "sparc/tm-sp64.h"		/* sets GDB_MULTI_ARCH */
++#endif
++
+ #endif /* tm-fbsd.h */
diff --git a/devel/gdb66/files/patch-defs.h b/devel/gdb66/files/patch-defs.h
deleted file mode 100644
index be60dcfc7217..000000000000
--- a/devel/gdb66/files/patch-defs.h
+++ /dev/null
@@ -1,20 +0,0 @@
---- gdb/defs.h	Thu Aug  1 10:18:32 2002
-+++ gdb/defs.h	Sun Oct 13 10:44:10 2002
-@@ -39,8 +39,6 @@
- #include <unistd.h>
- #endif
- 
--#include "gdb_locale.h"
--
- /* For ``enum target_signal''.  */
- #include "gdb/signals.h"
- 
-@@ -57,6 +55,8 @@
-    here and in all subsequent file inclusions.  */
- 
- #include "ansidecl.h"
-+
-+#include "gdb_locale.h"
- 
- #include <stdarg.h>		/* for va_list */
- 
diff --git a/devel/gdb66/files/patch-freebsd-uthread.c b/devel/gdb66/files/patch-freebsd-uthread.c
deleted file mode 100644
index 9d3fd5453eac..000000000000
--- a/devel/gdb66/files/patch-freebsd-uthread.c
+++ /dev/null
@@ -1,937 +0,0 @@
---- gdb/freebsd-uthread.c	Wed Dec 31 16:00:00 1969
-+++ gdb/freebsd-uthread.c	Sun Oct 13 13:10:51 2002
-@@ -0,0 +1,934 @@
-+/* $FreeBSD$ */
-+/* Low level interface for debugging FreeBSD user threads for GDB, the GNU debugger.
-+   Copyright 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.  */
-+
-+/* This module implements a sort of half target that sits between the
-+   machine-independent parts of GDB and the ptrace interface (infptrace.c) to
-+   provide access to the FreeBSD user-mode thread implementation.
-+
-+   FreeBSD threads are true user-mode threads, which are invoked via
-+   the pthread_* interfaces.  These are mostly implemented in
-+   user-space, with all thread context kept in various structures that
-+   live in the user's heap.  For the most part, the kernel has no
-+   knowlege of these threads.
-+
-+   Based largely on hpux-thread.c
-+
-+   */
-+
-+
-+#include "defs.h"
-+#include <sys/queue.h>
-+#include <signal.h>
-+#include <setjmp.h>
-+#include <string.h>
-+#include "gdbthread.h"
-+#include "target.h"
-+#include "inferior.h"
-+#include <fcntl.h>
-+#include <ucontext.h>
-+#include <unistd.h>
-+#include <sys/stat.h>
-+#include "gdbcore.h"
-+#include "regcache.h"
-+
-+extern int child_suppress_run;
-+extern struct target_ops child_ops; /* target vector for inftarg.c */
-+
-+extern void _initialize_freebsd_uthread PARAMS ((void));
-+
-+/* Set to true while we are part-way through attaching */
-+static int freebsd_uthread_attaching;
-+
-+static int freebsd_uthread_active = 0;
-+static CORE_ADDR P_thread_list;
-+static CORE_ADDR P_thread_run;
-+
-+/* Pointer to the next function on the objfile event chain.  */
-+static void (*target_new_objfile_chain) (struct objfile *objfile);
-+
-+static void freebsd_uthread_resume PARAMS ((ptid_t pid, int step,
-+					enum target_signal signo));
-+
-+static void init_freebsd_uthread_ops PARAMS ((void));
-+
-+static struct target_ops freebsd_uthread_ops;
-+
-+static ptid_t find_active_ptid PARAMS ((void));
-+
-+struct cached_pthread {
-+  u_int64_t		uniqueid;
-+  int			state;
-+  CORE_ADDR		name;
-+  union {
-+    ucontext_t	uc;
-+    jmp_buf	jb;
-+  }			ctx;
-+};
-+
-+static ptid_t cached_ptid;
-+static struct cached_pthread cached_pthread;
-+static CORE_ADDR cached_pthread_addr;
-+
-+LIST_HEAD(idmaplist, idmap);
-+
-+struct idmap {
-+    LIST_ENTRY(idmap)	link;
-+    u_int64_t		uniqueid;
-+    int			tid;
-+};
-+
-+#define MAPHASH_SIZE	257
-+#define TID_MIN		1
-+#define TID_MAX		16383
-+
-+static int tid_to_hash[TID_MAX + 1];		/* set to map_hash index */
-+static struct idmaplist map_hash[MAPHASH_SIZE];
-+static int next_free_tid = TID_MIN;		/* first available tid */
-+static int last_free_tid = TID_MIN;		/* first unavailable */
-+
-+static CORE_ADDR P_thread_next_offset;
-+static CORE_ADDR P_thread_uniqueid_offset;
-+static CORE_ADDR P_thread_state_offset;
-+static CORE_ADDR P_thread_name_offset;
-+static CORE_ADDR P_thread_ctx_offset;
-+static CORE_ADDR P_thread_PS_RUNNING_value;
-+static CORE_ADDR P_thread_PS_DEAD_value;
-+
-+static int next_offset;
-+static int uniqueid_offset;
-+static int state_offset;
-+static int name_offset;
-+static int ctx_offset;
-+static int PS_RUNNING_value;
-+static int PS_DEAD_value;
-+
-+#define UNIQUEID_HASH(id)	(id % MAPHASH_SIZE)
-+#define TID_ADD1(tid)		(((tid) + 1) == TID_MAX + 1 \
-+				 ? TID_MIN : (tid) + 1)
-+#define IS_TID_FREE(tid)	(tid_to_hash[tid] == -1)
-+
-+static int
-+get_new_tid(int h)
-+{
-+  int tid = next_free_tid;
-+
-+  tid_to_hash[tid] = h;
-+  next_free_tid = TID_ADD1(next_free_tid);
-+  if (next_free_tid == last_free_tid)
-+    {
-+      int i;
-+
-+      for (i = last_free_tid; TID_ADD1(i) != last_free_tid; i = TID_ADD1(i))
-+	if (IS_TID_FREE(i))
-+	  break;
-+      if (TID_ADD1(i) == last_free_tid)
-+	{
-+	  error("too many threads");
-+	  return 0;
-+	}
-+      next_free_tid = i;
-+      for (i = TID_ADD1(i); IS_TID_FREE(i); i = TID_ADD1(i))
-+	;
-+      last_free_tid = i;
-+    }
-+
-+  return tid;
-+}
-+
-+static ptid_t
-+find_ptid(u_int64_t uniqueid)
-+{
-+  int h = UNIQUEID_HASH(uniqueid);
-+  struct idmap *im;
-+
-+  LIST_FOREACH(im, &map_hash[h], link)
-+    if (im->uniqueid == uniqueid)
-+      return MERGEPID(PIDGET(inferior_ptid), im->tid);
-+
-+  im = xmalloc(sizeof(struct idmap));
-+  im->uniqueid = uniqueid;
-+  im->tid = get_new_tid(h);
-+  LIST_INSERT_HEAD(&map_hash[h], im, link);
-+
-+  return MERGEPID(PIDGET(inferior_ptid), im->tid);
-+}
-+
-+static void
-+free_ptid(ptid_t ptid)
-+{
-+  int tid = TIDGET(ptid);
-+  int h = tid_to_hash[tid];
-+  struct idmap *im;
-+
-+  if (!tid) return;
-+
-+  LIST_FOREACH(im, &map_hash[h], link)
-+    if (im->tid == tid)
-+      break;
-+
-+  if (!im) return;
-+
-+  LIST_REMOVE(im, link);
-+  tid_to_hash[tid] = -1;
-+  free(im);
-+}
-+
-+#define READ_OFFSET(field) read_memory(P_thread_##field##_offset,	\
-+				       (char *) &field##_offset,	\
-+				       sizeof(field##_offset))
-+
-+#define READ_VALUE(name) read_memory(P_thread_##name##_value,	\
-+				     (char *) &name##_value,	\
-+				     sizeof(name##_value))
-+
-+static void
-+read_thread_offsets (void)
-+{
-+  READ_OFFSET(next);
-+  READ_OFFSET(uniqueid);
-+  READ_OFFSET(state);
-+  READ_OFFSET(name);
-+  READ_OFFSET(ctx);
-+
-+  READ_VALUE(PS_RUNNING);
-+  READ_VALUE(PS_DEAD);
-+}
-+
-+#define READ_FIELD(ptr, T, field, result) \
-+  read_memory ((ptr) + field##_offset, (char *) &(result), sizeof result)
-+
-+static u_int64_t
-+read_pthread_uniqueid (CORE_ADDR ptr)
-+{
-+  u_int64_t uniqueid;
-+  READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
-+  return uniqueid;
-+}
-+
-+static CORE_ADDR
-+read_pthread_next (CORE_ADDR ptr)
-+{
-+  CORE_ADDR next;
-+  READ_FIELD(ptr, CORE_ADDR, next, next);
-+  return next;
-+}
-+
-+static void
-+read_cached_pthread (CORE_ADDR ptr, struct cached_pthread *cache)
-+{
-+  READ_FIELD(ptr, u_int64_t,	uniqueid,	cache->uniqueid);
-+  READ_FIELD(ptr, int,		state,		cache->state);
-+  READ_FIELD(ptr, CORE_ADDR,	name,		cache->name);
-+  READ_FIELD(ptr, ucontext_t,	ctx,		cache->ctx);
-+}
-+
-+static ptid_t
-+find_active_ptid (void)
-+{
-+  CORE_ADDR ptr;
-+
-+  read_memory ((CORE_ADDR)P_thread_run,
-+	       (char *)&ptr,
-+	       sizeof ptr);
-+
-+  return find_ptid(read_pthread_uniqueid(ptr));
-+}
-+
-+static CORE_ADDR find_pthread_addr PARAMS ((ptid_t ptid));
-+static struct cached_pthread * find_pthread PARAMS ((ptid_t ptid));
-+
-+static CORE_ADDR
-+find_pthread_addr (ptid_t ptid)
-+{
-+  CORE_ADDR ptr;
-+
-+  if (ptid_equal(ptid, cached_ptid))
-+    return cached_pthread_addr;
-+
-+  read_memory ((CORE_ADDR)P_thread_list,
-+	       (char *)&ptr,
-+	       sizeof ptr);
-+
-+  while (ptr != 0)
-+    {
-+      if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
-+	{
-+	  cached_ptid = ptid;
-+	  cached_pthread_addr = ptr;
-+	  read_cached_pthread(ptr, &cached_pthread);
-+	  return ptr;
-+	}
-+      ptr = read_pthread_next(ptr);
-+    }
-+
-+  return NULL;
-+}
-+
-+static struct cached_pthread *
-+find_pthread (ptid_t ptid)
-+{
-+  CORE_ADDR ptr;
-+
-+  if (ptid_equal(ptid, cached_ptid))
-+    return &cached_pthread;
-+
-+  read_memory ((CORE_ADDR)P_thread_list,
-+	       (char *)&ptr,
-+	       sizeof ptr);
-+
-+  while (ptr != 0)
-+    {
-+      if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
-+	{
-+	  cached_ptid = ptid;
-+	  cached_pthread_addr = ptr;
-+	  read_cached_pthread(ptr, &cached_pthread);
-+	  return &cached_pthread;
-+	}
-+      ptr = read_pthread_next(ptr);
-+    }
-+
-+#if 0
-+  error ("Can't find pthread %d,%d", PIDGET(ptid), TIDGET(ptid));
-+#endif
-+  return NULL;
-+}
-+
-+
-+/* Most target vector functions from here on actually just pass through to
-+   inftarg.c, as they don't need to do anything specific for threads.  */
-+
-+/* ARGSUSED */
-+static void
-+freebsd_uthread_open (char *arg, int from_tty)
-+{
-+  child_ops.to_open (arg, from_tty);
-+}
-+
-+/* Attach to process PID, then initialize for debugging it
-+   and wait for the trace-trap that results from attaching.  */
-+
-+static void
-+freebsd_uthread_attach (char *args, int from_tty)
-+{
-+  child_ops.to_attach (args, from_tty);
-+  push_target (&freebsd_uthread_ops);
-+  freebsd_uthread_attaching = 1;
-+}
-+
-+/* After an attach, see if the target is threaded */
-+
-+static void
-+freebsd_uthread_post_attach (int pid)
-+{
-+  if (freebsd_uthread_active)
-+    {
-+      read_thread_offsets ();
-+      inferior_ptid = find_active_ptid ();
-+      add_thread (inferior_ptid);
-+    }
-+  else
-+    {
-+      unpush_target (&freebsd_uthread_ops);
-+      push_target (&child_ops);
-+    }
-+
-+  freebsd_uthread_attaching = 0;
-+}
-+
-+/* Take a program previously attached to and detaches it.
-+   The program resumes execution and will no longer stop
-+   on signals, etc.  We'd better not have left any breakpoints
-+   in the program or it'll die when it hits one.  For this
-+   to work, it may be necessary for the process to have been
-+   previously attached.  It *might* work if the program was
-+   started via the normal ptrace (PTRACE_TRACEME).  */
-+
-+static void
-+freebsd_uthread_detach (char *args, int from_tty)
-+{
-+  child_ops.to_detach (args, from_tty);
-+}
-+
-+/* Resume execution of process PID.  If STEP is nozero, then
-+   just single step it.  If SIGNAL is nonzero, restart it with that
-+   signal activated.  We may have to convert pid from a thread-id to an LWP id
-+   for procfs.  */
-+
-+static void
-+freebsd_uthread_resume (ptid_t ptid, int step, enum target_signal signo)
-+{
-+  if (freebsd_uthread_attaching)
-+    {
-+      child_ops.to_resume (ptid, step, signo);
-+      return;
-+    }
-+
-+  child_ops.to_resume (ptid, step, signo);
-+  cached_ptid = MERGEPID(0, 0);
-+}
-+
-+/* Wait for any threads to stop.  We may have to convert PID from a thread id
-+   to a LWP id, and vice versa on the way out.  */
-+
-+static ptid_t
-+freebsd_uthread_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
-+{
-+  ptid_t rtnval;
-+
-+  if (freebsd_uthread_attaching)
-+    {
-+      return child_ops.to_wait (ptid, ourstatus);
-+    }
-+
-+  rtnval = child_ops.to_wait (ptid, ourstatus);
-+
-+  if (PIDGET(rtnval) >= 0)
-+    {
-+      rtnval = find_active_ptid ();
-+      if (!in_thread_list (rtnval))
-+	add_thread (rtnval);
-+    }
-+
-+  return rtnval;
-+}
-+
-+/* XXX: this needs to be selected by target, not [build] host */
-+#ifdef __i386__
-+
-+#include "i386-tdep.h"
-+
-+static char sigmap[I386_SSE_NUM_REGS] = /* map reg to sigcontext  */
-+{
-+  12,				/* eax */
-+  11,				/* ecx */
-+  10,				/* edx */
-+  9,				/* ebx */
-+  8,				/* esp */
-+  7,				/* ebp */
-+  6,				/* esi */
-+  5,				/* edi */
-+  15,				/* eip */
-+  17,				/* eflags */
-+  16,				/* cs */
-+  19,				/* ss */
-+  4,				/* ds */
-+  3,				/* es */
-+  2,				/* fs */
-+  1,				/* gs */
-+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
-+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
-+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
-+  -1,				/* mxcsr */
-+};
-+
-+static char jmpmap[I386_SSE_NUM_REGS] = /* map reg to jmp_buf */
-+{
-+  6,				/* eax */
-+  -1,				/* ecx */
-+  -1,				/* edx */
-+  1,				/* ebx */
-+  2,				/* esp */
-+  3,				/* ebp */
-+  4,				/* esi */
-+  5,				/* edi */
-+  0,				/* eip */
-+  -1,				/* eflags */
-+  -1,				/* cs */
-+  -1,				/* ss */
-+  -1,				/* ds */
-+  -1,				/* es */
-+  -1,				/* fs */
-+  -1,				/* gs */
-+  -1, -1, -1, -1, -1, -1, -1,	/* st0-st7 */
-+  -1, -1, -1, -1, -1, -1, -1,	/* fctrl-fop */
-+  -1, -1, -1, -1, -1, -1, -1,	/* xmm0-xmm7 */
-+  -1,				/* mxcsr */
-+};
-+
-+#endif
-+
-+#ifdef __alpha__
-+
-+#include "alpha-tdep.h"
-+
-+static char sigmap[ALPHA_NUM_REGS] =	/* map reg to sigcontext  */
-+{
-+  1,  2,  3,  4,  5,  6,  7,  8,  /* v0 - t6 */
-+  9,  10, 11, 12, 13, 14, 15, 16, /* t7 - fp */
-+  17, 18, 19, 20, 21, 22, 23, 24, /* a0 - t9 */
-+  25, 26, 27, 28, 29, 30, 31, 32, /* t10 - zero */
-+  38, 39, 40, 41, 42, 43, 44, 45, /* f0 - f7 */
-+  46, 47, 48, 49, 50, 51, 52, 53, /* f8 - f15 */
-+  54, 55, 56, 57, 58, 59, 60, 61, /* f16 - f23 */
-+  62, 63, 64, 65, 66, 67, 68, 69, /* f24 - f31 */
-+  33, -1			  /* pc, vfp */
-+};
-+static char jmpmap[ALPHA_NUM_REGS] = {
-+  4,  5,  6,  7,  8,  9,  10, 11, /* v0 - t6 */
-+  12, 13, 14, 15, 16, 17, 18, 19, /* t7 - fp */
-+  20, 21, 22, 23, 24, 25, 26, 27, /* a0 - t9 */
-+  28, 29, 30, 31, 32, 33, 34, 35, /* t10 - zero */
-+  37, 38, 39, 40, 41, 42, 43, 44, /* f0 - f7 */
-+  45, 46, 47, 48, 49, 50, 51, 52, /* f8 - f15 */
-+  53, 54, 55, 56, 57, 58, 59, 60, /* f16 - f23 */
-+  61, 62, 63, 64, 65, 66, 67, 68, /* f24 - f31 */
-+  2,  -1,			  /* pc, vfp */
-+};
-+
-+#endif
-+
-+#ifdef __sparc64__
-+
-+static char sigmap[125] =	/* map reg to sigcontext  */
-+{
-+  -1
-+};
-+static char jmpmap[125] = {
-+  -1
-+};
-+
-+#endif
-+
-+static void
-+freebsd_uthread_fetch_registers (int regno)
-+{
-+  struct cached_pthread *thread;
-+  int active;
-+  int first_regno, last_regno;
-+  register_t *regbase;
-+  char *regmap;
-+
-+  if (freebsd_uthread_attaching || TIDGET(inferior_ptid) == 0)
-+    {
-+      child_ops.to_fetch_registers (regno);
-+      return;
-+    }
-+
-+  thread = find_pthread (inferior_ptid);
-+  active = (ptid_equal(inferior_ptid, find_active_ptid()));
-+
-+  if (active)
-+    {
-+      child_ops.to_fetch_registers (regno);
-+      return;
-+    }
-+
-+  if (regno == -1)
-+    {
-+      first_regno = 0;
-+      last_regno = NUM_REGS - 1;
-+    }
-+  else
-+    {
-+      first_regno = regno;
-+      last_regno = regno;
-+    }
-+
-+  regbase = (register_t*) &thread->ctx.jb[0];
-+  regmap = jmpmap;
-+
-+  for (regno = first_regno; regno <= last_regno; regno++)
-+    {
-+      if (regmap[regno] == -1)
-+	child_ops.to_fetch_registers (regno);
-+      else
-+	if (thread)
-+	  supply_register (regno, (char*) &regbase[regmap[regno]]);
-+	else
-+	  supply_register (regno, NULL);
-+    }
-+}
-+
-+static void
-+freebsd_uthread_store_registers (int regno)
-+{
-+  struct cached_pthread *thread;
-+  CORE_ADDR ptr;
-+  int first_regno, last_regno;
-+  u_int32_t *regbase;
-+  char *regmap;
-+
-+  if (freebsd_uthread_attaching)
-+    {
-+      child_ops.to_store_registers (regno);
-+      return;
-+    }
-+
-+  thread = find_pthread (inferior_ptid);
-+
-+  if (thread->state == PS_RUNNING_value)
-+    {
-+      child_ops.to_store_registers (regno);
-+      return;
-+    }
-+
-+  if (regno == -1)
-+    {
-+      first_regno = 0;
-+      last_regno = NUM_REGS - 1;
-+    }
-+  else
-+    {
-+      first_regno = regno;
-+      last_regno = regno;
-+    }
-+
-+  regbase = (u_int32_t*) &thread->ctx.jb[0];
-+  regmap = jmpmap;
-+
-+  ptr = find_pthread_addr (inferior_ptid);
-+  for (regno = first_regno; regno <= last_regno; regno++)
-+    {
-+      if (regmap[regno] == -1)
-+	child_ops.to_store_registers (regno);
-+      else
-+	{
-+	  u_int32_t *reg = &regbase[regmap[regno]];
-+	  int off;
-+
-+	  /* Hang onto cached value */
-+	  memcpy(reg, registers + REGISTER_BYTE (regno),
-+		 REGISTER_RAW_SIZE (regno));
-+
-+	  /* And push out to inferior */
-+	  off = (char *) reg - (char *) thread;
-+	  write_memory (ptr + off, 
-+			registers + REGISTER_BYTE (regno),
-+			REGISTER_RAW_SIZE (regno));
-+	}
-+    }
-+}
-+
-+/* Get ready to modify the registers array.  On machines which store
-+   individual registers, this doesn't need to do anything.  On machines
-+   which store all the registers in one fell swoop, this makes sure
-+   that registers contains all the registers from the program being
-+   debugged.  */
-+
-+static void
-+freebsd_uthread_prepare_to_store (void)
-+{
-+  child_ops.to_prepare_to_store ();
-+}
-+
-+static int
-+freebsd_uthread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
-+			     int dowrite, struct mem_attrib *attrib,
-+			     struct target_ops *target)
-+{
-+  return child_ops.to_xfer_memory (memaddr, myaddr, len, dowrite,
-+				   attrib, target);
-+}
-+
-+/* Print status information about what we're accessing.  */
-+
-+static void
-+freebsd_uthread_files_info (struct target_ops *ignore)
-+{
-+  child_ops.to_files_info (ignore);
-+}
-+
-+static void
-+freebsd_uthread_kill_inferior (void)
-+{
-+  child_ops.to_kill ();
-+}
-+
-+static void
-+freebsd_uthread_notice_signals (ptid_t ptid)
-+{
-+  child_ops.to_notice_signals (ptid);
-+}
-+
-+/* Fork an inferior process, and start debugging it with /proc.  */
-+
-+static void
-+freebsd_uthread_create_inferior (char *exec_file, char *allargs, char **env)
-+{
-+  child_ops.to_create_inferior (exec_file, allargs, env);
-+
-+  if (PIDGET(inferior_ptid) && freebsd_uthread_active)
-+    {
-+      read_thread_offsets ();
-+      push_target (&freebsd_uthread_ops);
-+      inferior_ptid = find_active_ptid ();
-+      add_thread (inferior_ptid);
-+    }
-+}
-+
-+/* This routine is called to find out if the inferior is using threads.
-+   We check for the _thread_run and _thread_list globals. */
-+
-+void
-+freebsd_uthread_new_objfile (struct objfile *objfile)
-+{
-+  struct minimal_symbol *ms;
-+
-+  if (!objfile)
-+    {
-+      freebsd_uthread_active = 0;
-+      return;
-+    }
-+
-+  ms = lookup_minimal_symbol ("_thread_run", NULL, objfile);
-+
-+  if (!ms)
-+    return;
-+
-+  P_thread_run = SYMBOL_VALUE_ADDRESS (ms);
-+
-+  ms = lookup_minimal_symbol ("_thread_list", NULL, objfile);
-+
-+  if (!ms)
-+    return;
-+
-+  P_thread_list = SYMBOL_VALUE_ADDRESS (ms);
-+
-+#define OFFSET_SYM(field)	"_thread_" #field "_offset"
-+#define LOOKUP_OFFSET(field)						\
-+  do {									\
-+      ms = lookup_minimal_symbol (OFFSET_SYM(field), NULL, objfile);	\
-+      if (!ms)								\
-+	return;								\
-+      P_thread_##field##_offset = SYMBOL_VALUE_ADDRESS (ms);		\
-+  } while (0);
-+
-+#define VALUE_SYM(name)		"_thread_" #name "_value"
-+#define LOOKUP_VALUE(name)						\
-+  do {									\
-+       ms = lookup_minimal_symbol (VALUE_SYM(name), NULL, objfile);	\
-+      if (!ms)								\
-+	return;								\
-+      P_thread_##name##_value = SYMBOL_VALUE_ADDRESS (ms);		\
-+  } while (0);
-+
-+  LOOKUP_OFFSET(next);
-+  LOOKUP_OFFSET(uniqueid);
-+  LOOKUP_OFFSET(state);
-+  LOOKUP_OFFSET(name);
-+  LOOKUP_OFFSET(ctx);
-+
-+  LOOKUP_VALUE(PS_RUNNING);
-+  LOOKUP_VALUE(PS_DEAD);
-+
-+  freebsd_uthread_active = 1;
-+}
-+
-+/* Clean up after the inferior dies.  */
-+
-+static void
-+freebsd_uthread_mourn_inferior ()
-+{
-+  child_ops.to_mourn_inferior ();
-+  unpush_target (&freebsd_uthread_ops);
-+}
-+
-+/* Mark our target-struct as eligible for stray "run" and "attach" commands.  */
-+
-+static int
-+freebsd_uthread_can_run ()
-+{
-+  return child_suppress_run;
-+}
-+
-+static int
-+freebsd_uthread_thread_alive (ptid_t ptid)
-+{
-+  struct cached_pthread *thread;
-+  int ret = 0;
-+
-+  if (freebsd_uthread_attaching)
-+    return 1;
-+
-+  /*
-+   * We can get called from child_ops.to_wait() which passes the underlying
-+   * pid (without a thread number).
-+   */
-+  if (TIDGET(ptid) == 0)
-+    return 1;
-+
-+  if (find_pthread_addr (ptid) != 0)
-+    {
-+      thread = find_pthread (ptid);
-+      ret = (thread->state != PS_DEAD_value);
-+    }
-+
-+  if (!ret)
-+    free_ptid(ptid);
-+
-+  return ret;
-+}
-+
-+static void
-+freebsd_uthread_stop (void)
-+{
-+  child_ops.to_stop ();
-+}
-+
-+static void
-+freebsd_uthread_find_new_threads (void)
-+{
-+  CORE_ADDR ptr;
-+  int state;
-+  u_int64_t uniqueid;
-+
-+  read_memory ((CORE_ADDR)P_thread_list,
-+	       (char *)&ptr,
-+	       sizeof ptr);
-+
-+  while (ptr != 0)
-+    {
-+      READ_FIELD(ptr, int, state, state);
-+      READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
-+      if (state != PS_DEAD_value &&
-+	  !in_thread_list (find_ptid(uniqueid)))
-+	add_thread (find_ptid(uniqueid));
-+      ptr = read_pthread_next(ptr);
-+    }
-+}
-+
-+/* MUST MATCH enum pthread_state */
-+static const char *statenames[] = {
-+  "RUNNING",
-+  "SIGTHREAD",
-+  "MUTEX_WAIT",
-+  "COND_WAIT",
-+  "FDLR_WAIT",
-+  "FDLW_WAIT",
-+  "FDR_WAIT",
-+  "FDW_WAIT",
-+  "POLL_WAIT",
-+  "FILE_WAIT",
-+  "SELECT_WAIT",
-+  "SLEEP_WAIT",
-+  "WAIT_WAIT",
-+  "SIGSUSPEND",
-+  "SIGWAIT",
-+  "SPINBLOCK",
-+  "JOIN",
-+  "SUSPENDED",
-+  "DEAD",
-+  "DEADLOCK",
-+};
-+
-+#if 0
-+
-+static int
-+freebsd_uthread_get_thread_info (ref, selection, info)
-+     gdb_threadref *ref;
-+     int selection;
-+     struct gdb_ext_thread_info *info;
-+{
-+  int pid = *ref;
-+  struct cached_pthread *thread = find_pthread (pid);
-+  struct cleanup *old_chain;
-+
-+  old_chain = save_inferior_pid ();
-+  inferior_pid = main_pid;
-+
-+  memset(&info->threadid, 0, OPAQUETHREADBYTES);
-+
-+  memcpy(&info->threadid, ref, sizeof *ref);
-+  info->active = thread->state == PS_RUNNING_value;
-+  strcpy(info->display, statenames[thread->state]);
-+  if (thread->name)
-+    read_memory ((CORE_ADDR) thread->name, info->shortname, 32);
-+  else
-+    strcpy(info->shortname, "");
-+
-+  do_cleanups (old_chain);
-+  return (0);
-+}
-+
-+#endif
-+
-+char *
-+freebsd_uthread_pid_to_str (ptid_t ptid)
-+{
-+  static char buf[30];
-+
-+  if (STREQ (current_target.to_shortname, "freebsd-uthreads"))
-+    sprintf (buf, "Process %d, Thread %ld",
-+	     PIDGET(ptid), TIDGET(ptid));
-+  else
-+    sprintf (buf, "Process %d", PIDGET(ptid));
-+
-+  return buf;
-+}
-+
-+
-+static void
-+init_freebsd_uthread_ops ()
-+{
-+  freebsd_uthread_ops.to_shortname = "freebsd-uthreads";
-+  freebsd_uthread_ops.to_longname = "FreeBSD uthreads";
-+  freebsd_uthread_ops.to_doc = "FreeBSD user threads support.";
-+  freebsd_uthread_ops.to_open = freebsd_uthread_open;
-+  freebsd_uthread_ops.to_attach = freebsd_uthread_attach;
-+  freebsd_uthread_ops.to_post_attach = freebsd_uthread_post_attach;
-+  freebsd_uthread_ops.to_detach = freebsd_uthread_detach;
-+  freebsd_uthread_ops.to_resume = freebsd_uthread_resume;
-+  freebsd_uthread_ops.to_wait = freebsd_uthread_wait;
-+  freebsd_uthread_ops.to_fetch_registers = freebsd_uthread_fetch_registers;
-+  freebsd_uthread_ops.to_store_registers = freebsd_uthread_store_registers;
-+  freebsd_uthread_ops.to_prepare_to_store = freebsd_uthread_prepare_to_store;
-+  freebsd_uthread_ops.to_xfer_memory = freebsd_uthread_xfer_memory;
-+  freebsd_uthread_ops.to_files_info = freebsd_uthread_files_info;
-+  freebsd_uthread_ops.to_insert_breakpoint = memory_insert_breakpoint;
-+  freebsd_uthread_ops.to_remove_breakpoint = memory_remove_breakpoint;
-+  freebsd_uthread_ops.to_terminal_init = terminal_init_inferior;
-+  freebsd_uthread_ops.to_terminal_inferior = terminal_inferior;
-+  freebsd_uthread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
-+  freebsd_uthread_ops.to_terminal_ours = terminal_ours;
-+  freebsd_uthread_ops.to_terminal_info = child_terminal_info;
-+  freebsd_uthread_ops.to_kill = freebsd_uthread_kill_inferior;
-+  freebsd_uthread_ops.to_create_inferior = freebsd_uthread_create_inferior;
-+  freebsd_uthread_ops.to_mourn_inferior = freebsd_uthread_mourn_inferior;
-+  freebsd_uthread_ops.to_can_run = freebsd_uthread_can_run;
-+  freebsd_uthread_ops.to_notice_signals = freebsd_uthread_notice_signals;
-+  freebsd_uthread_ops.to_thread_alive = freebsd_uthread_thread_alive;
-+  freebsd_uthread_ops.to_stop = freebsd_uthread_stop;
-+  freebsd_uthread_ops.to_stratum = process_stratum;
-+  freebsd_uthread_ops.to_has_all_memory = 1;
-+  freebsd_uthread_ops.to_has_memory = 1;
-+  freebsd_uthread_ops.to_has_stack = 1;
-+  freebsd_uthread_ops.to_has_registers = 1;
-+  freebsd_uthread_ops.to_has_execution = 1;
-+  freebsd_uthread_ops.to_has_thread_control = 0;
-+  freebsd_uthread_ops.to_magic = OPS_MAGIC;
-+  freebsd_uthread_ops.to_find_new_threads = freebsd_uthread_find_new_threads;
-+  freebsd_uthread_ops.to_pid_to_str = freebsd_uthread_pid_to_str;
-+#if 0
-+  freebsd_uthread_vec.get_thread_info = freebsd_uthread_get_thread_info;
-+#endif
-+}
-+
-+void
-+_initialize_freebsd_uthread ()
-+{
-+  init_freebsd_uthread_ops ();
-+  add_target (&freebsd_uthread_ops);
-+
-+  target_new_objfile_chain = target_new_objfile_hook;
-+  target_new_objfile_hook = freebsd_uthread_new_objfile;
-+
-+  child_suppress_run = 1;
-+}
diff --git a/devel/gdb66/files/patch-i386%nm-fbsd64.h b/devel/gdb66/files/patch-i386%nm-fbsd64.h
new file mode 100644
index 000000000000..03ec32aa92e0
--- /dev/null
+++ b/devel/gdb66/files/patch-i386%nm-fbsd64.h
@@ -0,0 +1,12 @@
+--- gdb/config/i386/nm-fbsd64.h.orig	Sat Mar 13 05:07:20 2004
++++ gdb/config/i386/nm-fbsd64.h	Wed May  5 11:20:14 2004
+@@ -25,6 +25,9 @@
+ /* Get generic BSD native definitions.  */
+ #include "config/nm-bsd.h"
+ 
++/* Get generic FreeBSD native definitions.  */
++#include "config/nm-fbsd.h"
++
+ /* Override child_pid_to_exec_file in 'inftarg.c'.  */
+ #define CHILD_PID_TO_EXEC_FILE
+ 
diff --git a/devel/gdb66/files/patch-i386-tdep.c b/devel/gdb66/files/patch-i386-tdep.c
deleted file mode 100644
index f91663ccfa40..000000000000
--- a/devel/gdb66/files/patch-i386-tdep.c
+++ /dev/null
@@ -1,12 +0,0 @@
---- gdb/i386-tdep.c	Mon Aug 26 11:35:25 2002
-+++ gdb/i386-tdep.c	Sun Oct 13 14:15:58 2002
-@@ -534,6 +534,9 @@
- static CORE_ADDR
- i386_frame_saved_pc (struct frame_info *frame)
- {
-+  if (kernel_debugging)
-+    return fbsd_kern_frame_saved_pc(frame);
-+
-   if (PC_IN_CALL_DUMMY (frame->pc, 0, 0))
-     return generic_read_register_dummy (frame->pc, frame->frame,
- 					PC_REGNUM);
diff --git a/devel/gdb66/files/patch-i386bsd-nat.c b/devel/gdb66/files/patch-i386bsd-nat.c
deleted file mode 100644
index a28ce60b09e2..000000000000
--- a/devel/gdb66/files/patch-i386bsd-nat.c
+++ /dev/null
@@ -1,20 +0,0 @@
---- gdb/i386bsd-nat.c       2003/01/02 20:22:00     1.1
-+++ gdb/i386bsd-nat.c       2003/01/02 20:22:35
-@@ -306,7 +306,7 @@
-   /* For some mysterious reason, some of the reserved bits in the
-      debug control register get set.  Mask these off, otherwise the
-      ptrace call below will fail.  */
--  dbregs.dr7 &= ~(0x0000fc00);
-+  DBREG_DRX ((&dbregs), 7) = ~(0x0000fc00);
- 
-   DBREG_DRX ((&dbregs), regnum) = value;
- 
-@@ -355,7 +355,7 @@
-     return 0;
- #endif
- 
--  return dbregs.dr6;
-+  return DBREG_DRX ((&dbregs), 6);
- }
- 
- #endif /* PT_GETDBREGS */
diff --git a/devel/gdb66/files/patch-kvm-fbsd.c b/devel/gdb66/files/patch-kvm-fbsd.c
deleted file mode 100644
index 7259fd149bed..000000000000
--- a/devel/gdb66/files/patch-kvm-fbsd.c
+++ /dev/null
@@ -1,759 +0,0 @@
---- gdb/kvm-fbsd.c	Fri Jan  3 08:57:23 2003
-+++ gdb/kvm-fbsd.c	Fri Jan  3 08:57:20 2003
-@@ -0,0 +1,756 @@
-+/* Kernel core dump functions below target vector, for GDB.
-+   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
-+   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.
-+*/
-+
-+/* $FreeBSD: /tmp/pcvs/ports/devel/gdb66/files/Attic/patch-kvm-fbsd.c,v 1.5 2003-04-08 08:37:55 jake Exp $ */
-+
-+/*
-+ * This works like "remote" but, you use it like this:
-+ *     target kcore /dev/mem
-+ * or
-+ *     target kcore /var/crash/host/core.0
-+ *
-+ * This way makes it easy to short-circut the whole bfd monster,
-+ * and direct the inferior stuff to our libkvm implementation.
-+ *
-+ */
-+
-+#include <sys/param.h>
-+#include <sys/time.h>
-+#include <sys/proc.h>
-+#include <sys/user.h>
-+#include <ctype.h>
-+#include <errno.h>
-+#include <signal.h>
-+#include <fcntl.h>
-+#include <kvm.h>
-+#include <sys/sysctl.h>
-+#include <paths.h>
-+#include <readline/tilde.h>
-+#include <machine/frame.h>
-+
-+#include "defs.h"
-+#include "gdb_string.h"
-+#include "frame.h"  /* required by inferior.h */
-+#include "inferior.h"
-+#include "symtab.h"
-+#include "symfile.h"
-+#include "objfiles.h"
-+#include "command.h"
-+#include "bfd.h"
-+#include "target.h"
-+#include "gdbcore.h"
-+#include "regcache.h"
-+
-+#if __FreeBSD_version >= 500032
-+static void
-+kcore_files_info (struct target_ops *);
-+
-+static void
-+kcore_close (int);
-+
-+static void
-+get_kcore_registers (int);
-+
-+static int
-+xfer_mem (CORE_ADDR, char *, int, int, struct mem_attrib *,
-+          struct target_ops *);
-+
-+static int
-+xfer_umem (CORE_ADDR, char *, int, int);
-+
-+static char		*core_file;
-+static kvm_t		*core_kd;
-+static struct pcb	cur_pcb;
-+static struct kinfo_proc *cur_proc;
-+
-+static struct target_ops kcore_ops;
-+
-+int kernel_debugging;
-+int kernel_writablecore;
-+
-+/* Read the "thing" at kernel address 'addr' into the space pointed to
-+   by point.  The length of the "thing" is determined by the type of p.
-+   Result is non-zero if transfer fails.  */
-+
-+#define kvread(addr, p) \
-+  (target_read_memory ((CORE_ADDR) (addr), (char *) (p), sizeof (*(p))))
-+
-+static CORE_ADDR
-+ksym_kernbase (void)
-+{
-+  static CORE_ADDR kernbase;
-+  struct minimal_symbol *sym;
-+
-+  if (kernbase == 0)
-+    {
-+      sym = lookup_minimal_symbol ("kernbase", NULL, NULL);
-+      if (sym == NULL) {
-+	kernbase = KERNBASE;
-+      } else {
-+	kernbase = SYMBOL_VALUE_ADDRESS (sym);
-+      }
-+    }
-+  return kernbase;
-+}
-+
-+#define	KERNOFF		(ksym_kernbase ())
-+#define	INKERNEL(x)	((x) >= KERNOFF)
-+
-+CORE_ADDR
-+ksym_lookup(const char *name)
-+{
-+  struct minimal_symbol *sym;
-+
-+  sym = lookup_minimal_symbol (name, NULL, NULL);
-+  if (sym == NULL)
-+    error ("kernel symbol `%s' not found.", name);
-+
-+  return SYMBOL_VALUE_ADDRESS (sym);
-+}
-+
-+/* Provide the address of an initial PCB to use.
-+   If this is a crash dump, try for "dumppcb".
-+   If no "dumppcb" or it's /dev/mem, use proc0.
-+   Return the core address of the PCB we found.  */
-+
-+static CORE_ADDR
-+initial_pcb (void)
-+{
-+  struct minimal_symbol *sym;
-+  CORE_ADDR addr;
-+  void *val;
-+
-+  /* Make sure things are open...  */
-+  if (!core_kd || !core_file)
-+    return (0);
-+
-+  /* If this is NOT /dev/mem try for dumppcb.  */
-+  if (strncmp (core_file, _PATH_DEV, sizeof _PATH_DEV - 1))
-+    {
-+      sym = lookup_minimal_symbol ("dumppcb", NULL, NULL);
-+      if (sym != NULL)
-+	{
-+	  addr = SYMBOL_VALUE_ADDRESS (sym);
-+	  return (addr);
-+	}
-+  }
-+
-+  /* OK, just use thread0's pcb.  Note that curproc might
-+     not exist, and if it does, it will point to gdb.
-+     Therefore, just use proc0 and let the user set
-+     some other context if they care about it.  */
-+
-+  addr = ksym_lookup ("thread0");
-+  if (kvread (addr, &val))
-+    {
-+      error ("cannot read thread0 pointer at %x\n", addr);
-+      val = 0;
-+    }
-+  else
-+    {
-+      /* Read the PCB address in thread structure.  */
-+      addr += offsetof (struct thread, td_pcb);
-+      if (kvread (addr, &val))
-+	{
-+	  error ("cannot read thread0->td_pcb pointer at %x\n", addr);
-+	  val = 0;
-+	}
-+    }
-+
-+  /* thread0 is wholly in the kernel and cur_proc is only used for
-+     reading user mem, so no point in setting this up.  */
-+  cur_proc = 0;
-+
-+  return ((CORE_ADDR)val);
-+}
-+
-+/* Set the current context to that of the PCB struct at the system address
-+   passed.  */
-+
-+static int
-+set_context (CORE_ADDR addr)
-+{
-+  CORE_ADDR procaddr = 0;
-+
-+  if (kvread (addr, &cur_pcb))
-+    error ("cannot read pcb at %#x", addr);
-+
-+  /* Fetch all registers from core file.  */
-+  target_fetch_registers (-1);
-+
-+  /* Now, set up the frame cache, and print the top of stack.  */
-+  flush_cached_frames ();
-+  set_current_frame (create_new_frame (read_fp (), read_pc ()));
-+  select_frame (get_current_frame ());
-+  return (0);
-+}
-+
-+/* Discard all vestiges of any previous core file and mark data and stack
-+   spaces as empty.  */
-+
-+/* ARGSUSED */
-+static void
-+kcore_close (int quitting)
-+{
-+
-+  inferior_ptid = null_ptid;	/* Avoid confusion from thread stuff.  */
-+
-+  if (core_kd)
-+    {
-+      kvm_close (core_kd);
-+      free (core_file);
-+      core_file = NULL;
-+      core_kd = NULL;
-+    }
-+}
-+
-+/* This routine opens and sets up the core file bfd.  */
-+
-+static void
-+kcore_open (char *filename /* the core file */, int from_tty)
-+{
-+  kvm_t *kd;
-+  const char *p;
-+  struct cleanup *old_chain;
-+  char buf[256], *cp;
-+  int ontop;
-+  CORE_ADDR addr;
-+
-+  target_preopen (from_tty);
-+
-+  /* The exec file is required for symbols.  */
-+  if (exec_bfd == NULL)
-+    error ("No kernel exec file specified");
-+
-+  if (core_kd)
-+    {
-+      error ("No core file specified."
-+	     "  (Use `detach' to stop debugging a core file.)");
-+      return;
-+    }
-+
-+  if (!filename)
-+    {
-+      error ("No core file specified.");
-+      return;
-+    }
-+
-+  filename = tilde_expand (filename);
-+  if (filename[0] != '/')
-+    {
-+      cp = concat (current_directory, "/", filename, NULL);
-+      free (filename);
-+      filename = cp;
-+    }
-+
-+  old_chain = make_cleanup (free, filename);
-+
-+  kd = kvm_open (bfd_get_filename(exec_bfd), filename, NULL,
-+		 kernel_writablecore ? O_RDWR: O_RDONLY, 0);
-+  if (kd == NULL)
-+    {
-+      perror_with_name (filename);
-+      return;
-+    }
-+
-+  /* Looks semi-reasonable.  Toss the old core file and work on the new.  */
-+
-+  discard_cleanups (old_chain);		/* Don't free filename any more.  */
-+  core_file = filename;
-+  unpush_target (&kcore_ops);
-+  ontop = !push_target (&kcore_ops);
-+
-+  /* Note unpush_target (above) calls kcore_close.  */
-+  core_kd = kd;
-+
-+  /* Print out the panic string if there is one.  */
-+  if (kvread (ksym_lookup ("panicstr"), &addr) == 0 &&
-+      addr != 0 && 
-+      target_read_memory (addr, buf, sizeof(buf)) == 0)
-+    {
-+
-+      for (cp = buf; cp < &buf[sizeof(buf)] && *cp; cp++)
-+	if (!isascii (*cp) || (!isprint (*cp) && !isspace (*cp)))
-+	  *cp = '?';
-+      *cp = '\0';
-+      if (buf[0] != '\0')
-+	printf_filtered ("panic: %s\n", buf);
-+    }
-+
-+  /* Print all the panic messages if possible.  */
-+  if (symfile_objfile != NULL)
-+    {
-+      printf ("panic messages:\n---\n");
-+      snprintf (buf, sizeof buf,
-+                "/sbin/dmesg -N %s -M %s | \
-+                 /usr/bin/awk '/^(panic:|Fatal trap) / { printing = 1 } \
-+                               { if (printing) print $0 }'",
-+                symfile_objfile->name, filename);
-+      fflush (stdout);
-+      system (buf);
-+      printf ("---\n");
-+    }
-+
-+  if (!ontop)
-+    {
-+      warning ("you won't be able to access this core file until you terminate\n"
-+		"your %s; do ``info files''", target_longname);
-+      return;
-+    }
-+
-+  /* Now, set up process context, and print the top of stack.  */
-+  (void)set_context (initial_pcb());
-+  print_stack_frame (selected_frame, frame_relative_level(selected_frame), 1);
-+}
-+
-+static void
-+kcore_detach (char *args, int from_tty)
-+{
-+  if (args)
-+    error ("Too many arguments");
-+  unpush_target (&kcore_ops);
-+  reinit_frame_cache ();
-+  if (from_tty)
-+    printf_filtered ("No kernel core file now.\n");
-+}
-+
-+#ifdef __alpha__
-+
-+#include "alpha/tm-alpha.h"
-+#include "alpha-tdep.h"
-+
-+#ifndef S0_REGNUM
-+#define S0_REGNUM (ALPHA_T7_REGNUM+1)
-+#endif
-+
-+fetch_kcore_registers (struct pcb *pcbp)
-+{
-+
-+  /* First clear out any garbage.  */
-+  memset (registers, '\0', REGISTER_BYTES);
-+
-+  /* SP */
-+  *(long *) &registers[REGISTER_BYTE (SP_REGNUM)] =
-+    pcbp->pcb_hw.apcb_ksp;
-+
-+  /* S0 through S6 */
-+  memcpy (&registers[REGISTER_BYTE (S0_REGNUM)],
-+          &pcbp->pcb_context[0], 7 * sizeof (long));
-+
-+  /* PC */
-+  *(long *) &registers[REGISTER_BYTE (PC_REGNUM)] =
-+    pcbp->pcb_context[7];
-+
-+  registers_fetched ();
-+}
-+
-+
-+CORE_ADDR
-+fbsd_kern_frame_saved_pc (struct frame_info *fi)
-+{
-+  struct minimal_symbol *sym;
-+  CORE_ADDR this_saved_pc;
-+
-+  this_saved_pc = FRAME_SAVED_PC(fi);
-+
-+  sym = lookup_minimal_symbol_by_pc (this_saved_pc);
-+
-+  if (sym != NULL &&
-+      (strcmp (SYMBOL_NAME (sym), "XentArith") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentIF") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentInt") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentMM") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentSys") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentUna") == 0 ||
-+       strcmp (SYMBOL_NAME (sym), "XentRestart") == 0))
-+    {
-+      return (read_memory_integer (fi->frame + 32 * 8, 8));
-+    }
-+  else
-+    {
-+      return (this_saved_pc);
-+    }
-+}
-+
-+#endif /* __alpha__ */
-+
-+#ifdef __i386__
-+
-+static CORE_ADDR
-+ksym_maxuseraddr (void)
-+{
-+  static CORE_ADDR maxuseraddr;
-+  struct minimal_symbol *sym;
-+
-+  if (maxuseraddr == 0)
-+    {
-+      sym = lookup_minimal_symbol ("PTmap", NULL, NULL);
-+      if (sym == NULL) {
-+	maxuseraddr = VM_MAXUSER_ADDRESS;
-+      } else {
-+	maxuseraddr = SYMBOL_VALUE_ADDRESS (sym);
-+      }
-+    }
-+  return maxuseraddr;
-+}
-+
-+
-+/* Symbol names of kernel entry points.  Use special frames.  */
-+#define	KSYM_TRAP	"calltrap"
-+#define	KSYM_INTR	"Xintr"
-+#define	KSYM_FASTINTR	"Xfastintr"
-+#define	KSYM_OLDSYSCALL	"Xlcall_syscall"
-+#define	KSYM_SYSCALL	"Xint0x80_syscall"
-+
-+/* The following is FreeBSD-specific hackery to decode special frames
-+   and elide the assembly-language stub.  This could be made faster by
-+   defining a frame_type field in the machine-dependent frame information,
-+   but we don't think that's too important right now.  */
-+enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
-+
-+CORE_ADDR
-+fbsd_kern_frame_saved_pc (struct frame_info *fr)
-+{
-+  struct minimal_symbol *sym;
-+  CORE_ADDR this_saved_pc;
-+  enum frametype frametype;
-+
-+  this_saved_pc = read_memory_integer (fr->frame + 4, 4);
-+  sym = lookup_minimal_symbol_by_pc (this_saved_pc);
-+  frametype = tf_normal;
-+  if (sym != NULL)
-+    {
-+      if (strcmp (SYMBOL_NAME (sym), KSYM_TRAP) == 0)
-+	frametype = tf_trap;
-+      else
-+	if (strncmp (SYMBOL_NAME (sym), KSYM_INTR,
-+	    strlen (KSYM_INTR)) == 0 || strncmp (SYMBOL_NAME(sym),
-+	    KSYM_FASTINTR, strlen (KSYM_FASTINTR)) == 0)
-+	  frametype = tf_interrupt;
-+      else
-+	if (strcmp (SYMBOL_NAME (sym), KSYM_SYSCALL) == 0 ||
-+	    strcmp (SYMBOL_NAME (sym), KSYM_OLDSYSCALL) == 0)
-+	  frametype = tf_syscall;
-+    }
-+
-+  switch (frametype)
-+    {
-+      default:
-+      case tf_normal:
-+        return (this_saved_pc);
-+#define oEIP   offsetof (struct trapframe, tf_eip)
-+
-+      case tf_trap:
-+	return (read_memory_integer (fr->frame + 8 + oEIP, 4));
-+
-+      case tf_interrupt:
-+	return (read_memory_integer (fr->frame + 12 + oEIP, 4));
-+
-+      case tf_syscall:
-+	return (read_memory_integer (fr->frame + 8 + oEIP, 4));
-+#undef oEIP
-+    }
-+}
-+
-+static void
-+fetch_kcore_registers (struct pcb *pcb)
-+{
-+  int i;
-+  int noreg;
-+
-+  /* Get the register values out of the sys pcb and store them where
-+     `read_register' will find them.  */
-+  /*
-+   * XXX many registers aren't available.
-+   * XXX for the non-core case, the registers are stale - they are for
-+   *     the last context switch to the debugger.
-+   * XXX gcc's register numbers aren't all #defined in tm-i386.h.
-+   */
-+  noreg = 0;
-+  for (i = 0; i < 3; ++i)		/* eax,ecx,edx */
-+    supply_register (i, (char *)&noreg);
-+
-+  supply_register (3, (char *) &pcb->pcb_ebx);
-+  supply_register (SP_REGNUM, (char *) &pcb->pcb_esp);
-+  supply_register (FP_REGNUM, (char *) &pcb->pcb_ebp);
-+  supply_register (6, (char *) &pcb->pcb_esi);
-+  supply_register (7, (char *) &pcb->pcb_edi);
-+  supply_register (PC_REGNUM, (char *) &pcb->pcb_eip);
-+
-+  for (i = 9; i < 14; ++i)		/* eflags, cs, ss, ds, es, fs */
-+    supply_register (i, (char *) &noreg);
-+  supply_register (15, (char *) &pcb->pcb_gs);
-+
-+  /* XXX 80387 registers?  */
-+}
-+
-+#endif /* __i386__ */
-+
-+#ifdef __sparc64__
-+
-+#define	SPARC_INTREG_SIZE	8
-+
-+static void
-+fetch_kcore_registers (struct pcb *pcbp)
-+{
-+  static struct frame top;
-+  CORE_ADDR f_addr;
-+  int i;
-+
-+  /* Get the register values out of the sys pcb and store them where
-+     `read_register' will find them.  */
-+  /*
-+   * XXX many registers aren't available.
-+   * XXX for the non-core case, the registers are stale - they are for
-+   *     the last context switch to the debugger.
-+   * XXX do something with the floating-point registers?
-+   */
-+  supply_register (SP_REGNUM, &pcbp->pcb_sp);
-+  supply_register (PC_REGNUM, &pcbp->pcb_pc);
-+  f_addr = extract_address (&pcbp->pcb_sp, SPARC_INTREG_SIZE);
-+  /* Load the previous frame by hand (XXX) and supply it. */
-+  read_memory (f_addr + SPOFF, (char *)&top, sizeof (top));
-+  for (i = 0; i < 8; i++)
-+    supply_register (i + L0_REGNUM, &top.fr_local[i]);
-+  for (i = 0; i < 8; i++)
-+    supply_register (i + I0_REGNUM, &top.fr_in[i]);
-+}
-+
-+CORE_ADDR
-+fbsd_kern_frame_saved_pc (struct frame_info *fi)
-+{
-+  struct minimal_symbol *sym;
-+  CORE_ADDR frame, pc_addr, pc;
-+  char *buf;
-+
-+  buf = alloca (MAX_REGISTER_RAW_SIZE);
-+  /* XXX: duplicates fi->extra_info->bottom. */
-+  frame = (fi->next != NULL) ? fi->next->frame : read_sp ();
-+  pc_addr = frame + offsetof (struct frame, fr_in[7]);
-+
-+#define	READ_PC(pc, a, b) do { \
-+  read_memory (a, b, SPARC_INTREG_SIZE); \
-+  pc = extract_address (b, SPARC_INTREG_SIZE); \
-+} while (0)
-+
-+  READ_PC (pc, pc_addr, buf);
-+
-+  sym = lookup_minimal_symbol_by_pc (pc);
-+  if (sym != NULL)
-+    {
-+      if (strncmp (SYMBOL_NAME (sym), "tl0_", 4) == 0 ||
-+	  strcmp (SYMBOL_NAME (sym), "btext") == 0 ||
-+	  strcmp (SYMBOL_NAME (sym), "mp_startup") == 0 ||
-+	  strcmp (SYMBOL_NAME (sym), "fork_trampoline") == 0)
-+        {
-+	  /*
-+	   * Ugly kluge: user space addresses aren't separated from kernel
-+	   * ones by range; if encountering a trap from user space, just
-+	   * return a 0 to stop the trace.
-+	   * Do the same for entry points of kernel processes to avoid
-+	   * printing garbage.
-+	   */
-+	  pc = 0;
-+        }
-+      if (strncmp (SYMBOL_NAME (sym), "tl1_", 4) == 0)
-+        {
-+          pc_addr = fi->frame + sizeof (struct frame) +
-+	    offsetof (struct trapframe, tf_tpc);
-+          READ_PC (pc, pc_addr, buf);
-+	}
-+    }
-+  return (pc);
-+}
-+
-+#endif /* __sparc64__ */
-+
-+/* Get the registers out of a core file.  This is the machine-
-+   independent part.  Fetch_core_registers is the machine-dependent
-+   part, typically implemented in the xm-file for each architecture.  */
-+
-+/* We just get all the registers, so we don't use regno.  */
-+
-+/* ARGSUSED */
-+static void
-+get_kcore_registers (int regno)
-+{
-+
-+  /* XXX - Only read the pcb when set_context() is called.
-+     When looking at a live kernel this may be a problem,
-+     but the user can do another "proc" or "pcb" command to
-+     grab a new copy of the pcb...  */
-+
-+  /* Zero out register set then fill in the ones we know about.  */
-+  fetch_kcore_registers (&cur_pcb);
-+}
-+
-+static void
-+kcore_files_info (t)
-+  struct target_ops *t;
-+{
-+  printf_filtered ("\t`%s'\n", core_file);
-+}
-+
-+/* If mourn is being called in all the right places, this could be say
-+   `gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
-+
-+static int
-+ignore (CORE_ADDR addr, char *contents)
-+{
-+  return 0;
-+}
-+
-+static int
-+xfer_kmem (CORE_ADDR memaddr, char *myaddr, int len, int write,
-+	   struct mem_attrib *attrib, struct target_ops *target)
-+{
-+  int n;
-+
-+
-+  if (!INKERNEL (memaddr))
-+    return xfer_umem (memaddr, myaddr, len, write);
-+
-+  if (core_kd == NULL)
-+    return 0;
-+
-+  if (write)
-+    n = kvm_write (core_kd, memaddr, myaddr, len);
-+  else
-+    n = kvm_read (core_kd, memaddr, myaddr, len) ;
-+  if (n < 0) {
-+    fprintf_unfiltered (gdb_stderr, "can not access 0x%x, %s\n",
-+			memaddr, kvm_geterr (core_kd));
-+    n = 0;
-+  }
-+
-+  return n;
-+}
-+
-+
-+static int
-+xfer_umem (CORE_ADDR memaddr, char *myaddr, int len, int write /* ignored */)
-+{
-+  int n = 0;
-+
-+  if (cur_proc == 0)
-+    {
-+      error ("---Can't read userspace from dump, or kernel process---\n");
-+      return 0;
-+    }
-+
-+  if (write)
-+    error ("kvm_uwrite unimplemented\n");
-+  else
-+    n = kvm_uread (core_kd, cur_proc, memaddr, myaddr, len) ;
-+
-+  if (n < 0)
-+    return 0;
-+
-+  return n;
-+}
-+
-+static void
-+set_proc_cmd (char *arg, int from_tty)
-+{
-+  CORE_ADDR addr, pid_addr, first_td;
-+  void *val;
-+  struct kinfo_proc *kp;
-+  int cnt;
-+  pid_t pid;
-+
-+  if (!arg)
-+    error_no_arg ("proc address for the new context");
-+
-+  if (core_kd == NULL)
-+    error ("no kernel core file");
-+
-+  addr = (CORE_ADDR) parse_and_eval_address (arg);
-+  
-+  if (!INKERNEL (addr))
-+    {
-+      kp = kvm_getprocs (core_kd, KERN_PROC_PID, addr, &cnt);
-+      if (!cnt)
-+	error ("invalid pid");	  
-+      addr = (CORE_ADDR)kp->ki_paddr;
-+      cur_proc = kp;
-+    }
-+  else
-+    {
-+      /* Update cur_proc.  */
-+      pid_addr = addr + offsetof (struct proc, p_pid);
-+      if (kvread (pid_addr, &pid))
-+	error ("cannot read pid ptr");
-+      cur_proc = kvm_getprocs (core_kd, KERN_PROC_PID, pid, &cnt);
-+      if (!cnt)
-+	error("invalid pid");	  
-+    }
-+
-+  /* Find the first thread in the process.  XXXKSE  */
-+  addr += offsetof (struct proc, p_threads.tqh_first);
-+  if (kvread (addr, &first_td))
-+    error ("cannot read thread ptr");
-+
-+  /* Read the PCB address in thread structure. */
-+  addr = first_td + offsetof (struct thread, td_pcb);
-+  if (kvread (addr, &val))
-+    error("cannot read pcb ptr");
-+
-+  /* Read the PCB address in proc structure. */
-+  if (set_context ((CORE_ADDR) val))
-+    error ("invalid proc address");
-+}
-+#else
-+int kernel_debugging = 0;
-+int kernel_writablecore = 0;
-+
-+CORE_ADDR
-+fbsd_kern_frame_saved_pc (struct frame_info *fi)
-+{
-+  return 0;
-+}
-+#endif
-+
-+void
-+_initialize_kcorelow (void)
-+{
-+#if __FreeBSD_version >= 500032
-+  kcore_ops.to_shortname = "kcore";
-+  kcore_ops.to_longname = "Kernel core dump file";
-+  kcore_ops.to_doc =
-+    "Use a core file as a target.  Specify the filename of the core file.";
-+  kcore_ops.to_open = kcore_open;
-+  kcore_ops.to_close = kcore_close;
-+  kcore_ops.to_attach = find_default_attach;
-+  kcore_ops.to_detach = kcore_detach;
-+  kcore_ops.to_fetch_registers = get_kcore_registers;
-+  kcore_ops.to_xfer_memory = xfer_kmem;
-+  kcore_ops.to_files_info = kcore_files_info;
-+  kcore_ops.to_create_inferior = find_default_create_inferior;
-+  kcore_ops.to_stratum = kcore_stratum;
-+  kcore_ops.to_has_memory = 1;
-+  kcore_ops.to_has_stack = 1;
-+  kcore_ops.to_has_registers = 1;
-+  kcore_ops.to_magic = OPS_MAGIC;
-+
-+  add_target (&kcore_ops);
-+  add_com ("proc", class_obscure, set_proc_cmd, "Set current process context");
-+#endif
-+}
diff --git a/devel/gdb66/files/patch-main.c b/devel/gdb66/files/patch-main.c
new file mode 100644
index 000000000000..bd5cd4645ddf
--- /dev/null
+++ b/devel/gdb66/files/patch-main.c
@@ -0,0 +1,53 @@
+--- gdb/main.c.orig	Thu Apr 15 22:40:39 2004
++++ gdb/main.c	Thu Apr 15 22:47:51 2004
+@@ -66,6 +66,12 @@
+ /* Whether dbx commands will be handled */
+ int dbx_commands = 0;
+ 
++#ifdef KGDB
++/* Kernel debugging support.  */
++int kernel_debugging;
++int kernel_writablecore;
++#endif
++
+ /* System root path, used to find libraries etc.  */
+ char *gdb_sysroot = 0;
+ 
+@@ -311,6 +317,12 @@
+       {"statistics", no_argument, 0, OPT_STATISTICS},
+       {"write", no_argument, &write_files, 1},
+       {"args", no_argument, &set_args, 1},
++#ifdef KGDB
++      {"kernel", no_argument, &kernel_debugging, 1},
++      {"k", no_argument, &kernel_debugging, 1},
++      {"wcore", no_argument, &kernel_writablecore, 1},
++      {"w", no_argument, &kernel_writablecore, 1},
++#endif
+       {0, no_argument, 0, 0}
+     };
+ 
+@@ -857,6 +869,11 @@
+   --interpreter=INTERP\n\
+                      Select a specific interpreter / user interface\n\
+ "), stream);
++#ifdef KGDB
++  fputs_unfiltered (_("\
++  --kernel           Enable kernel debugging.\n\
++"), stream);
++#endif
+   fputs_unfiltered (_("\
+   --mapped           Use mapped symbol files if supported on this system.\n\
+   --nw		     Do not use a window interface.\n\
+@@ -874,6 +891,12 @@
+ #if defined(TUI)
+   fputs_unfiltered (_("\
+   --tui              Use a terminal user interface.\n\
++"), stream);
++#endif
++#ifdef KGDB
++  fputs_unfiltered (_("\
++  --wcore            Make core file writable (only works for /dev/mem).\n\
++                     This option only works while debugging a kernel !!\n\
+ "), stream);
+ #endif
+   fputs_unfiltered (_("\
diff --git a/devel/gdb66/files/patch-sparc-tdep.c b/devel/gdb66/files/patch-sparc-tdep.c
deleted file mode 100644
index 950276ea2089..000000000000
--- a/devel/gdb66/files/patch-sparc-tdep.c
+++ /dev/null
@@ -1,13 +0,0 @@
---- gdb/sparc-tdep.c.orig	Sun Oct 20 18:21:09 2002
-+++ gdb/sparc-tdep.c	Sun Oct 20 18:16:53 2002
-@@ -450,6 +450,9 @@
-   char *buf;
-   CORE_ADDR addr;
- 
-+  if (kernel_debugging)
-+    return fbsd_kern_frame_saved_pc(frame);
-+
-   buf = alloca (MAX_REGISTER_RAW_SIZE);
-   if (frame->signal_handler_caller)
-     {
-
diff --git a/devel/gdb66/files/patch-sparcnbsd-tdep.c b/devel/gdb66/files/patch-sparcnbsd-tdep.c
deleted file mode 100644
index 13ba396dd6b7..000000000000
--- a/devel/gdb66/files/patch-sparcnbsd-tdep.c
+++ /dev/null
@@ -1,63 +0,0 @@
-diff -urN gdb/sparcnbsd-tdep.c.orig gdb/sparcnbsd-tdep.c
---- gdb/sparcnbsd-tdep.c.orig	Sat Oct 19 17:19:17 2002
-+++ gdb/sparcnbsd-tdep.c	Sat Oct 19 17:44:47 2002
-@@ -31,20 +31,6 @@
- 
- #include "solib-svr4.h"
- 
--#define REG32_OFFSET_PSR	(0 * 4)
--#define REG32_OFFSET_PC		(1 * 4)
--#define REG32_OFFSET_NPC	(2 * 4)
--#define REG32_OFFSET_Y		(3 * 4)
--#define REG32_OFFSET_GLOBAL	(4 * 4)
--#define REG32_OFFSET_OUT	(12 * 4)
--
--#define REG64_OFFSET_TSTATE	(0 * 8)
--#define REG64_OFFSET_PC		(1 * 8)
--#define REG64_OFFSET_NPC	(2 * 8)
--#define REG64_OFFSET_Y		(3 * 8)
--#define REG64_OFFSET_GLOBAL	(4 * 8)
--#define REG64_OFFSET_OUT	(12 * 8)
--
- void
- sparcnbsd_supply_reg32 (char *regs, int regno)
- {
-@@ -375,16 +361,13 @@
- 
-   if (gdbarch_ptr_bit (current_gdbarch) == 32)
-     {
--      reg_size = (20 * 4);
--      fpreg_size = (33 * 4);
-+      reg_size = REG32_SIZE;
-+      fpreg_size = FPREG32_SIZE;
-     }
-   else
-     {
--      reg_size = (20 * 8);
--      fpreg_size = (64 * 4)
--        + 8  /* fsr */
--        + 4  /* gsr */
--        + 4; /* pad */
-+      reg_size = REG64_SIZE;
-+      fpreg_size = FPREG64_SIZE;
-     }
- 
-   switch (which)
-@@ -442,7 +425,7 @@
- 
-   jb_addr = read_register (O0_REGNUM);
- 
--  if (target_read_memory (jb_addr + 12, buf, sizeof (buf)))
-+  if (target_read_memory (jb_addr + JB32_OFFSET_PC, buf, sizeof (buf)))
-     return 0;
- 
-   *pc = extract_address (buf, sizeof (buf));
-@@ -458,7 +441,7 @@
- 
-   jb_addr = read_register (O0_REGNUM);
- 
--  if (target_read_memory (jb_addr + 16, buf, sizeof (buf)))
-+  if (target_read_memory (jb_addr + JB64_OFFSET_PC, buf, sizeof (buf)))
-     return 0;
- 
-   *pc = extract_address (buf, sizeof (buf));
diff --git a/devel/gdb66/files/patch-symfile.c b/devel/gdb66/files/patch-symfile.c
deleted file mode 100644
index 99c75ffe04bf..000000000000
--- a/devel/gdb66/files/patch-symfile.c
+++ /dev/null
@@ -1,15 +0,0 @@
---- gdb/symfile.c	Tue Feb 26 17:40:36 2002
-+++ gdb/symfile.c	Wed May 29 11:10:17 2002
-@@ -1546,11 +1546,7 @@
-       char *val = sect_opts[i].value;
-       char *sec = sect_opts[i].name;
-  
--      val = sect_opts[i].value;
--      if (val[0] == '0' && val[1] == 'x')
--	addr = strtoul (val+2, NULL, 16);
--      else
--	addr = strtoul (val, NULL, 10);
-+      addr = parse_and_eval_address(val);
- 
-       /* Here we store the section offsets in the order they were
-          entered on the command line. */
diff --git a/devel/gdb66/files/patch-version.in b/devel/gdb66/files/patch-version.in
deleted file mode 100644
index 4496ebfb1f3e..000000000000
--- a/devel/gdb66/files/patch-version.in
+++ /dev/null
@@ -1,5 +0,0 @@
---- gdb/version.in	Fri Apr 26 18:04:22 2002
-+++ gdb/version.in	Mon Jun  3 08:14:54 2002
-@@ -1 +1 @@
--5.2.90
-+5.3 (FreeBSD)