* TODO: Note abstraction layer violation where "ocd reset" command

must invalidate the dcache, and how this might be fixed.

* monitor.c (#include "dcache.h"): Removed.
(remote_dcache): Removed.
(monitor_open): Removed code that created local dcache.
(flush_monitor_dcache): Removed (unused function).
(monitor_resume): Removed call to dcache_invd().
(monitor_load): Likewise.
(monitor_xfer_memory): Changed to call monitor_write_memory(),
monitor_write_memory_block(), and monitor_read_memory() instead
of dcache_xfer_memory().
* monitor.h (flush_monitor_dcache): Removed (unused function).
* ocd.c (#include "dcache.h"): Removed.
(ocd_dcache): Removed.
(ocd_open): Removed code that created local dcache.
(ocd_resume): Removed call to dcache_invd().
(ocd_xfer_memory): Changed to call ocd_write_bytes() and
ocd_read_bytes() instead of dcache_xfer_memory().
(bdm_reset_command): Invalidate target dcache.
* remote-bug.c (bug_load): Remove call to dcache_invd().
(bug_resume): Likewise.
(bug_settings): Remove dcache, readfunc, and writefunc fields
from initializer.
(bug_xfer_memory): Changed to call bug_read_memory() and
bug_write_memory() instead of dcache_xfer_memory().
* remote-nindy.c (#include "dcache.h"): Removed.
(nindy_dcache): Removed.
(nindy_open): Removed code that created local dcache.
(nindy_resume): Removed call to dcache_invd().
(nindy_load): Likewise.
(nindy_xfer_inferior_memory): Changed to call ninMemPut() and
ninMemGet() instead of dcache_xfer_memory().
* remote-sds.c (#include "dcache.h"): Removed.
(sds_dcache): Removed.
(sds_open): Removed code that created local dcache.
(sds_resume): Removed call to dcache_invd().
(sds_xfer_memory): Changed to call sds_write_bytes() and
sds_read_bytes() instead of dcache_xfer_memory().
* remote-utils.c (gr_open): Removed code that created local dcache.
* remote-utils.h (#include "dcache.h"): Removed.
(struct gr_settings): Removed dcache, readfunc, and writefunc fields.
(gr_get_dcache, gr_set_dcache): Removed macro definitions.
* remote.c (#include "dcache.h"): Removed.
(remote_dcache): Removed.
(remote_open_1): Removed code that created local dcache.
(remote_async_open_1): Likewise.
(remote_resume): Removed call to dcache_invd().
(remote_async_resume): Likewise.
(remote_xfer_memory): Changed to call remote_write_bytes() and
remote_read_bytes() instead of dcache_xfer_memory().
* wince.c (#include "dcache.h"): Removed.
(remote_dcache): Removed.
(child_create_inferior): Removed code that created local dcache.
(child_xfer_memory): Changed to call remote_write_bytes() and
remote_read_bytes() instead of dcache_xfer_memory().
(child_resume): Removed call to dcache_invd().

* target.c (target_dcache): Added.
(target_load): Invalidate target_dcache.
(do_xfer_memory): New function.
(target_xfer_memory): Reimplement in terms of dcache_xfer_memory().
(target_xfer_memory_partial): Likewise.
(initialize_targets): Create target_dcache.
* target.h (#include "dcache.h"): Added.
(target_open): Invalidate target_dcache.
(target_resume): Likewise.
(do_xfer_memory): New declaration.

* dcache.c (dcache_init): Removed reading and writing arguments.
(dcache_struct): Removed read_memory and write_memory fields.
(dcache_write_line): Call do_xfer_memory.
(dcache_read_line): Likewise.
(dcache_xfer_memory): Likewise.
(dcache_invalidate): Renamed from dcache_invd.
(dcache_init): Updated.
(dcache_xfer_memory): Updated.
* dcache.h (memxferfunc): Removed definition.

gdb/ocd.c

@@ -31,7 +31,6 @@
 #include "gdbcmd.h"
 #include "objfiles.h"
 #include "gdb-stabs.h"
-#include "dcache.h"
 #include <sys/types.h>
 #include <signal.h>
 #include "serial.h"
@@ -273,8 +272,6 @@ ocd_start_remote (PTR dummy)
 /* Open a connection to a remote debugger.
    NAME is the filename used for communication.  */
 
-static DCACHE *ocd_dcache;
-
 void
 ocd_open (char *name, int from_tty, enum ocd_target_type target_type,
 	  struct target_ops *ops)
@@ -292,11 +289,6 @@ device the OCD device is attached to (e.g. /dev/ttya).");
 
   unpush_target (current_ops);
 
-  if (!ocd_dcache)
-    ocd_dcache = dcache_init (ocd_read_bytes, ocd_write_bytes);
-  else
-    dcache_invd (ocd_dcache);
-
   if (strncmp (name, "wiggler", 7) == 0)
     {
       ocd_desc = SERIAL_OPEN ("ocd");
@@ -387,8 +379,6 @@ ocd_resume (int pid, int step, enum target_signal siggnal)
 {
   int pktlen;
 
-  dcache_invd (ocd_dcache);
-
   if (step)
     ocd_do_command (OCD_STEP, &last_run_status, &pktlen);
   else
@@ -772,7 +762,14 @@ int
 ocd_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int should_write,
 		 struct target_ops *target)
 {
-  return dcache_xfer_memory (ocd_dcache, memaddr, myaddr, len, should_write);
+  int res;
+
+  if (should_write)
+    res = ocd_write_bytes (memaddr, myaddr, len);
+  else
+    res = ocd_read_bytes (memaddr, myaddr, len);
+
+  return res;
 }
 
 void
@@ -1315,7 +1312,7 @@ bdm_reset_command (char *args, int from_tty)
     error ("Not connected to OCD device.");
 
   ocd_do_command (OCD_RESET, &status, &pktlen);
-  dcache_invd (ocd_dcache);
+  dcache_invalidate (target_dcache);
   registers_changed ();
 }