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diff --git a/gdb/dcache.h b/gdb/dcache.h
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+/* Declarations for caching.  Typically used by remote back ends for
+   caching remote memory.
+
+   Copyright 1992, 1993 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.  */
+
+#ifndef DCACHE_H
+#define DCACHE_H
+
+typedef int (*memxferfunc) PARAMS((CORE_ADDR memaddr,
+			     char *myaddr,
+			     int len));
+
+typedef struct dcache_struct DCACHE;
+
+/* Using the data cache DCACHE return the contents of the word at
+   address ADDR in the remote machine.  */
+int dcache_fetch PARAMS((DCACHE *dcache, CORE_ADDR addr));
+
+/* Flush DCACHE. */
+void dcache_flush PARAMS((DCACHE *dcache));
+
+/* Initialize DCACHE. */
+DCACHE *dcache_init PARAMS((memxferfunc reading, memxferfunc writing));
+
+/* Write the word at ADDR both in the data cache and in the remote machine.  */
+int dcache_poke PARAMS((DCACHE *dcache, CORE_ADDR addr, int data));
+
+/* Simple to call from <remote>_xfer_memory */
+
+int dcache_xfer_memory PARAMS((DCACHE *cache, CORE_ADDR mem, char *my, int len, int should_write));
+
+/* Write the bytes at ADDR into the data cache and the remote machine. */
+int dcache_poke_block PARAMS((DCACHE *cache, CORE_ADDR mem, char* my, int len));
+#endif /* DCACHE_H */