new file mode 100644
--- /dev/null
+++ b/packages/hal/mips/arch/current/include/mips-stub.h
@@ -0,0 +1,116 @@
+/* mips-stub.h - MIPS-specific definitions for generic stub
+ * 
+ * Copyright (c) 1998 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#define NUMREGS    90
+
+#ifdef __mips64
+  #define REGSIZE(X) 8
+  typedef unsigned long long target_register_t;
+#else
+  #define REGSIZE(X) 4
+  typedef unsigned long target_register_t;
+#endif
+
+enum regnames {
+	ZERO,	AT,	V0,	V1,	A0,	A1,	A2,	A3,
+	T0,	T1,	T2,	T3,	T4,	T5,	T6,	T7,
+	S0,	S1,	S2,	S3,	S4,	S5,	S6,	S7,
+	T8,	T9,	K0,	K1,	GP,	SP,	S8,	RA,
+	SR,	LO,	HI,	BAD,	CAUSE,	PC,
+	CONFIG = 84,	CACHE,	DEBUG,	DEPC,	EPC
+};
+
+typedef enum regnames regnames_t;
+
+#include <cyg/hal/generic-stub.h>
+
+/* If ENABLED is non-zero, supply a memory fault handler that traps
+   subsequent memory errors and sets _mem_err to 1. Otherwise, memory
+   faults are processed as exceptions. */
+extern void __set_mem_fault_trap (int enable);
+
+/* Write C to the current serial port. */
+extern void putDebugChar (int c);
+
+/* Read one character from the current serial port. */
+extern int getDebugChar (void);
+
+/* Given a trap value TRAP, return the corresponding signal. */
+extern int __computeSignal (unsigned int trap_number);
+
+/* Install the standard set of trap handlers for the stub. */
+extern void __install_traps (void);
+
+/* Return the SPARC trap number corresponding to the last-taken trap. */
+extern int __get_trap_number (void);
+
+/* Return the currently-saved value corresponding to register REG. */
+extern target_register_t get_register (regnames_t reg);
+
+/* Store VALUE in the register corresponding to WHICH. */
+extern void put_register (regnames_t which, target_register_t value);
+
+/* Set the currently-saved pc register value to PC. This also updates NPC
+   as needed. */
+extern void set_pc (target_register_t pc);
+
+/* Flush the instruction cache. */
+extern void flush_i_cache (void);
+
+/* Reset the board. */
+extern void __reset (void);
+
+/* Set the baud rate for the current serial port. */
+extern void __set_baud_rate (int baud);
+
+/* Initialize the hardware. */
+extern void initHardware (void);
+
+/* Set things up so that the next user resume will execute one instruction.
+   This may be done by setting breakpoints or setting a single step flag
+   in the saved user registers, for example. */
+void single_step (void);
+
+/* Clear the single-step state. */
+void clear_single_step (void);
+
+struct gdb_packet;
+
+/* Return 1 when a complete packet has been received, 0 if the packet
+   is not yet complete, or -1 if an erroneous packet was NAKed. */
+int __add_char_to_packet (int character, struct gdb_packet *packet);
+
+/* If the breakpoint we hit is in the breakpoint() instruction, return a
+   non-zero value. */
+extern int __is_breakpoint_function (void);
+
+/* Skip the current instruction. */
+extern void __skipinst (void);
+
+/* Write the 'T' packet in BUFFER. SIGVAL is the signal the program
+   received. */
+
+extern void __build_t_packet (int sigval, char *buffer);
+
+extern void install_breakpoints (void);
+
+/* Address in text section of a breakpoint instruction.  */
+
+extern void _breakinst (void);
+
+/* The opcode for a breakpoint instruction.  */
+
+extern unsigned long __break_opcode (void);
+