new file mode 100644
--- /dev/null
+++ b/packages/hal/common/current/include/hal_stub.h
@@ -0,0 +1,204 @@
+#ifndef CYGONCE_HAL_HAL_STUB_H
+#define CYGONCE_HAL_HAL_STUB_H
+
+//=============================================================================
+//
+//      hal_stub.h
+//
+//      HAL header for GDB stub support.
+//
+//=============================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
+// License for the specific language governing rights and limitations under
+// the License.
+// 
+// The Original Code is eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998, 1999 Cygnus Solutions.  
+// All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//=============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   jskov
+// Contributors:jskov
+// Date:        1999-02-12
+// Purpose:     Generic HAL stub header.
+// Usage:       #include <cyg/hal/hal_stub.h>
+//              
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+#include <pkgconf/hal.h>
+
+#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
+#define USE_GDBSTUB_PROTOTYPES 0        // avoid stub-tservice.h atm
+#define __ECOS__                        // use to mark eCos hacks
+
+#include <cyg/hal/basetype.h>           // HAL_LABEL_NAME
+#include <cyg/hal/hal_arch.h>           // HAL header
+#include <cyg/infra/cyg_type.h>
+typedef cyg_uint32 uint32;
+
+#include <cyg/hal/plf_stub.h>
+#include <cyg/hal/generic-stub.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//-----------------------------------------------------------------------------
+// Definitions for generic-stub.c
+
+#define __set_mem_fault_trap(x) ({__mem_fault = 0; x(); __mem_fault;})
+
+//----------------------------------------------------------------------------
+// Signal definitions to avoid 'signal.h'/
+#define SIGHUP  1       /* hangup */
+#define SIGINT  2       /* interrupt */
+#define SIGQUIT 3       /* quit */
+#define SIGILL  4       /* illegal instruction (not reset when caught) */
+#define SIGTRAP 5       /* trace trap (not reset when caught) */
+#define SIGIOT  6       /* IOT instruction */
+#define SIGABRT 6       /* used by abort, replace SIGIOT in the future */
+#define SIGEMT  7       /* EMT instruction */
+#define SIGFPE  8       /* floating point exception */
+#define SIGKILL 9       /* kill (cannot be caught or ignored) */
+#define SIGBUS  10      /* bus error */
+#define SIGSEGV 11      /* segmentation violation */
+#define SIGSYS  12      /* bad argument to system call */
+#define SIGPIPE 13      /* write on a pipe with no one to read it */
+#define SIGALRM 14      /* alarm clock */
+#define SIGTERM 15      /* software termination signal from kill */
+
+//----------------------------------------------------------------------------
+// Thread support. This setting is used in thread-pkts.h
+#ifdef CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
+#define DEBUG_THREADS 1
+#else
+#define DEBUG_THREADS 0
+#endif
+
+// The function stub_copy_registers() is statically defined in
+// thread-packets.c, but in eCos this external stub is defined as it
+// is used in dbg_gdb.cxx.
+externC void __stub_copy_registers(target_register_t *dest, 
+                                   target_register_t *src);
+
+//----------------------------------------------------------------------------
+// Memory accessor functions.
+#define TARGET_HAS_OWN_MEM_FUNCS
+
+//----------------------------------------------------------------------------
+// Target extras?!
+extern int __process_target_query(char * pkt, char * out, int maxOut);
+extern int __process_target_set(char * pkt, char * out, int maxout);
+extern int __process_target_packet(char * pkt, char * out, int maxout);
+
+//---------------------------------------------------------------------------
+// Declarations to avoid compiler warnings.
+
+// Set the baud rate for the current serial port.
+extern void __set_baud_rate (int baud);
+
+// Write C to the current serial port.
+extern void putDebugChar (int c);
+
+// Read one character from the current serial port.
+extern int getDebugChar (void);
+
+// Push CH back onto the debug stream.
+extern void ungetDebugChar (int ch);
+
+// Reset the board.
+extern void __reset (void);
+
+// Multi-bp support.
+extern int __set_breakpoint (target_register_t addr);
+extern int __remove_breakpoint (target_register_t addr);
+
+/* Install the standard set of trap handlers for the stub. */
+extern void __install_traps (void);
+
+/* Address in text section of a breakpoint instruction.  */
+
+extern void CYG_LABEL_NAME(breakinst) (void);
+
+/* The opcode for a breakpoint instruction.  */
+
+extern unsigned long __break_opcode (void);
+
+#ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
+extern void cyg_hal_gdb_interrupt    (target_register_t pc);
+extern int  cyg_hal_gdb_remove_break (target_register_t pc);
+#endif
+
+//----------------------------------------------------------------------------
+// eCos extensions to the stub
+
+extern void hal_output_gdb_string(target_register_t str, int string_len);
+
+extern target_register_t registers[];   // The current saved registers.
+extern target_register_t * _registers ;
+extern HAL_SavedRegisters *_hal_registers;
+
+extern int cyg_hal_gdb_break;
+
+//---------------------------------------------------------------------------
+// Local strcpy/strlen functions removes libc dependency.
+static inline char *strcpy( char *s, const char *t)
+{
+    char *r = s;
+
+    while( *t ) *s++ = *t++;
+
+    // Terminate the copied string.
+    *s = 0;
+
+    return r;
+}
+
+static inline int strlen( const char *s )
+{
+    int r = 0;
+    while( *s++ ) r++;
+    return r;
+}
+
+//-----------------------------------------------------------------------------
+// Repeat the cache definitions here to avoid too much hackery in 
+// generic-stub.h
+typedef enum {
+  CACHE_NOOP, CACHE_ENABLE, CACHE_DISABLE, CACHE_FLUSH
+} cache_control_t;
+
+/* Perform the specified operation on the instruction cache. 
+   Returns 1 if the cache is enabled, 0 otherwise. */
+extern int __instruction_cache (cache_control_t request);
+/* Perform the specified operation on the data cache. 
+   Returns 1 if the cache is enabled, 0 otherwise. */
+extern int __data_cache (cache_control_t request);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
+
+//-----------------------------------------------------------------------------
+#endif // CYGONCE_HAL_HAL_STUB_H
+// End of hal_stub.h