diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog
index b4fee9d20..96a4a058a 100644
--- a/include/gdb/ChangeLog
+++ b/include/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2002-05-10  Elena Zannoni  <ezannoni@redhat.com>
+
+        * sim-sh.h: New file, for sh gdb<->sim interface.
+
 2002-05-09  Daniel Jacobowitz  <drow@mvista.com>
 
 	* signals.h: Update comments.
diff --git a/include/gdb/sim-sh.h b/include/gdb/sim-sh.h
new file mode 100644
index 000000000..3c736be86
--- /dev/null
+++ b/include/gdb/sim-sh.h
@@ -0,0 +1,54 @@
+/* This file defines the interface between the sh simulator and gdb.
+   Copyright (C) 2002 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.  */
+
+#if !defined (SIM_SH_H)
+#define SIM_SH_H
+
+#ifdef __cplusplus
+extern "C" { // }
+#endif
+
+/* The simulator makes use of the following register information. */
+
+enum
+  {
+    SIM_SH64_R0_REGNUM = 0,
+    SIM_SH64_SP_REGNUM = 15,
+    SIM_SH64_PC_REGNUM = 64,
+    SIM_SH64_SR_REGNUM = 65,
+    SIM_SH64_SSR_REGNUM = 66,
+    SIM_SH64_SPC_REGNUM = 67,
+    SIM_SH64_TR0_REGNUM = 68,
+    SIM_SH64_FPCSR_REGNUM = 76,
+    SIM_SH64_FR0_REGNUM = 77
+  };
+
+enum
+  {
+    SIM_SH64_NR_REGS = 141,  /* total number of architectural registers */
+    SIM_SH64_NR_R_REGS = 64, /* number of general registers */
+    SIM_SH64_NR_TR_REGS = 8, /* number of target registers */
+    SIM_SH64_NR_FP_REGS = 64 /* number of floating point registers */
+  };
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif