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diff --git a/gdb/config/mn10300/tm-mn10300.h b/gdb/config/mn10300/tm-mn10300.h
new file mode 100644
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+++ b/gdb/config/mn10300/tm-mn10300.h
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+/* Parameters for execution on a Matsushita mn10300 processor.
+   Copyright 1996, 1997 Free Software Foundation, Inc. 
+
+   Contributed by Geoffrey Noer <noer@cygnus.com>
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* The mn10300 is little endian.  */
+#define TARGET_BYTE_ORDER_DEFAULT LITTLE_ENDIAN
+
+/* All registers are 32bits (phew!).  */
+#define REGISTER_SIZE 4
+#define MAX_REGISTER_RAW_SIZE 4
+#define NUM_REGS 32
+
+#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
+
+#define REGISTER_BYTE(REG) ((REG) * 4)
+#define REGISTER_VIRTUAL_SIZE(REG) 4
+#define REGISTER_RAW_SIZE(REG) 4
+
+#define MAX_REGISTER_VIRTUAL_SIZE 4
+
+#define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
+
+extern char **mn10300_register_names;
+#define REGISTER_NAME(i) mn10300_register_names[i]
+
+#define D2_REGNUM 2
+#define D3_REGNUM 3
+#define A2_REGNUM 6
+#define A3_REGNUM 7
+#define SP_REGNUM 8
+#define PC_REGNUM 9
+#define MDR_REGNUM 10
+#define PSW_REGNUM 11
+#define LIR_REGNUM 12
+#define LAR_REGNUM 13
+
+/* Pseudo register that contains true address of executing stack frame */
+#define FP_REGNUM 31
+
+/* BREAKPOINT_FROM_PC uses the program counter value to determine the
+   breakpoint that should be used */
+extern breakpoint_from_pc_fn mn10300_breakpoint_from_pc;
+#define BREAKPOINT_FROM_PC(pcptr, lenptr) mn10300_breakpoint_from_pc (pcptr, lenptr)
+
+#define FUNCTION_START_OFFSET 0
+
+#define DECR_PC_AFTER_BREAK 0
+
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
+
+#define SAVED_PC_AFTER_CALL(frame) \
+  read_memory_integer (read_register (SP_REGNUM), 4)
+
+#ifdef __STDC__
+struct frame_info;
+struct type;
+struct value;
+#endif
+
+extern void mn10300_init_extra_frame_info PARAMS ((struct frame_info *));
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10300_init_extra_frame_info (fi)
+#define INIT_FRAME_PC		/* Not necessary */
+
+#define FRAME_INIT_SAVED_REGS(fi) /* handled by init_extra_frame_info */
+
+extern CORE_ADDR mn10300_frame_chain PARAMS ((struct frame_info *));
+#define FRAME_CHAIN(fi) mn10300_frame_chain (fi)
+#define FRAME_CHAIN_VALID(FP, FI)	generic_frame_chain_valid (FP, FI)
+
+extern CORE_ADDR mn10300_find_callers_reg PARAMS ((struct frame_info *, int));
+extern CORE_ADDR mn10300_frame_saved_pc   PARAMS ((struct frame_info *));
+#define FRAME_SAVED_PC(FI) (mn10300_frame_saved_pc (FI))
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF. */
+
+#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
+  if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
+    memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
+  else \
+    memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE));
+
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
+  extract_address (REGBUF + REGISTER_BYTE (4), \
+		   REGISTER_RAW_SIZE (4))
+
+#define STORE_RETURN_VALUE(TYPE, VALBUF) \
+  if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
+    write_register_bytes(REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
+  else \
+    write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
+
+#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
+  (SP) = mn10300_store_struct_return (STRUCT_ADDR, SP)
+
+extern CORE_ADDR mn10300_skip_prologue PARAMS ((CORE_ADDR));
+#define SKIP_PROLOGUE(pc) pc = mn10300_skip_prologue (pc)
+
+#define FRAME_ARGS_SKIP 0
+
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+#define FRAME_NUM_ARGS(val, fi) ((val) = -1)
+
+extern void mn10300_pop_frame PARAMS ((struct frame_info *));
+#define POP_FRAME mn10300_pop_frame (get_current_frame ())
+
+#define USE_GENERIC_DUMMY_FRAMES
+#define CALL_DUMMY                   {0}
+#define CALL_DUMMY_START_OFFSET      (0)
+#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
+#define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
+#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
+#define CALL_DUMMY_ADDRESS()         entry_point_address ()
+
+extern CORE_ADDR mn10300_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
+#define PUSH_RETURN_ADDRESS(PC, SP)  mn10300_push_return_address (PC, SP)
+
+#define PUSH_DUMMY_FRAME	generic_push_dummy_frame ()
+
+extern CORE_ADDR
+mn10300_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
+				unsigned char, CORE_ADDR ));
+#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
+  (SP) = mn10300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
+
+#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
+
+#define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
+	(TYPE_LENGTH (TYPE) > 8)
+
+extern use_struct_convention_fn mn10300_use_struct_convention;
+#define USE_STRUCT_CONVENTION(GCC_P, TYPE) mn10300_use_struct_convention (GCC_P, TYPE)
+
+/* override the default get_saved_register function with
+   one that takes account of generic CALL_DUMMY frames */
+#define GET_SAVED_REGISTER
+
+/* Cons up virtual frame pointer for trace */
+extern void mn10300_virtual_frame_pointer PARAMS ((CORE_ADDR, long *, long *));
+#define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \
+	mn10300_virtual_frame_pointer ((PC), (REGP), (OFFP))
+
+/* Define this for Wingdb */
+
+#define TARGET_MN10300