diff --git a/gcc/config/tahoe/harris.h b/gcc/config/tahoe/harris.h
new file mode 100644
index 0000000000000000000000000000000000000000..0dc68b6e53ece533b103d1188edec12237dc76d1
--- /dev/null
+++ b/gcc/config/tahoe/harris.h
@@ -0,0 +1,86 @@
+/* Definitions of target machine for GNU compiler.  Harris tahoe version.
+   Copyright (C) 1989 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+#include "tahoe.h"
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-Dtahoe -Dunix -Dhcx"
+
+#undef DBX_DEBUGGING_INFO
+#define SDB_DEBUGGING_INFO
+
+#undef LIB_SPEC
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT 1
+
+/* urem and udiv don't exist on this system.  */
+#undef UDIVSI3_LIBCALL
+#undef UMODSI3_LIBCALL
+
+/* Operand of .align is not logarithmic.  */
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG)  \
+  LOG ? fprintf (FILE, "\t.align %d\n", 1 << (LOG)) : 0
+
+/* For the same reason, we need .align 2 after casesi.  */
+#undef PRINT_OPERAND
+#define PRINT_OPERAND(FILE, X, CODE)  \
+{ if (CODE == '@')							\
+    putc ('2', FILE);							\
+  else if (GET_CODE (X) == REG)						\
+    fprintf (FILE, "%s", reg_names[REGNO (X)]);				\
+  else if (GET_CODE (X) == MEM)						\
+    output_address (XEXP (X, 0));					\
+  else { putc ('$', FILE); output_addr_const (FILE, X); }}
+
+#undef ASM_OUTPUT_LOCAL
+#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
+( fputs (".bss ", (FILE)),			\
+  assemble_name ((FILE), (NAME)),		\
+  fprintf ((FILE), ",%u,4\n", (ROUNDED)))
+
+/* Output at beginning of assembler file.  */
+/* The .file command should always begin the output.  */
+
+#undef ASM_FILE_START
+#define ASM_FILE_START(FILE)			\
+  output_file_directive ((FILE), main_input_filename);
+
+#define ASM_OUTPUT_ASCII(FILE, PTR, SIZE)		\
+{							\
+  unsigned char *_p = (PTR);				\
+  int _thissize = (SIZE);				\
+  fprintf ((FILE), "\t.ascii \"");			\
+  for (i = 0; i < _thissize; i++)			\
+    {							\
+      register int c = _p[i];				\
+      if (c >= ' ' && c < 0177 && c != '\"' && c != '\\') \
+	putc (c, (FILE));				\
+      else						\
+	{						\
+	  fprintf ((FILE), "\\%o", c);			\
+	  if (i < _thissize - 1				\
+	      && _p[i + 1] >= '0' && _p[i + 1] <= '9')	\
+	    fprintf ((FILE), "\"\n\t.ascii \"");	\
+	}						\
+    }							\
+  fprintf ((FILE), "\"\n");				\
+}