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diff --git a/gcc/config/a29k/unix.h b/gcc/config/a29k/unix.h
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+/* Definitions of target machine for GNU compiler, for AMD Am29000 CPU, Unix.
+   Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
+   Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
+
+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, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+
+/* We define unix instead of EPI and define unix-style machine names.  */
+
+/* Set our default target to be the 29050; that is the more interesting chip
+   for Unix systems.  */
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (1+2+16+128)
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-Dam29k -Da29k -Dam29000 -Asystem(unix) -Acpu(a29k) -Amachine(a29k)"
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{!m29000:-Dam29050 -D__am29050__}"
+
+/* Use a default linker configuration file.  */
+#undef LINK_SPEC
+#define LINK_SPEC "-T default.gld%s"
+
+/* Define the magic numbers that we recognize as COFF.  */
+
+#define MY_ISCOFF(magic) ((magic) == SIPFBOMAGIC || (magic) == SIPRBOMAGIC)
+
+/* For some systems, it is best if double-word objects are aligned on a 
+   doubleword boundary.  We want to maintain compatibility with MetaWare in
+   a29k.h, but do not feel constrained to do so here.  */
+
+#undef BIGGEST_ALIGNMENT
+#define BIGGEST_ALIGNMENT 64
+
+/* Add shared data as a kludge for now.  */
+
+#undef ASM_FILE_START
+#define ASM_FILE_START(FILE)					\
+{ char *p, *after_dir = main_input_filename;			\
+  if (TARGET_29050)						\
+    fprintf (FILE, "\t.cputype 29050\n");			\
+  for (p = main_input_filename; *p; p++)			\
+    if (*p == '/')						\
+      after_dir = p + 1;					\
+  fprintf (FILE, "\t.file ");					\
+  output_quoted_string (FILE, after_dir);			\
+  fprintf (FILE, "\n");						\
+  if (flag_shared_data)						\
+    fprintf (FILE, "\t.sect .shdata,data\n");			\
+  fprintf (FILE, "\t.sect .lit,lit\n");  }
+
+/* Output before shared  data.  */
+
+#define SHARED_SECTION_ASM_OP "\t.use .shdata"
+
+/* If we want shared data, we have to turn off commons.  */
+
+#define OVERRIDE_OPTIONS if (flag_shared_data) flag_no_common = 1;
+
+/* Default to -fno-pcc-struct-return, since we don't have to worry about
+   compatibility.  */
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+#if 0 /* This would be needed except that the 29k doesn't have strict
+	 alignment requirements.  */
+
+#define FUNCTION_ARG_BOUNDARY(MODE, TYPE)				\
+  (((TYPE) != 0)							\
+	? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY)				\
+		? PARM_BOUNDARY						\
+		: TYPE_ALIGN(TYPE))					\
+	: ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)			\
+		? PARM_BOUNDARY						\
+		: GET_MODE_ALIGNMENT(MODE)))
+#endif