diff --git a/arch/powerpc/xmon/spu.h b/arch/powerpc/xmon/spu.h
new file mode 100644
index 0000000..c761fc8
--- /dev/null
+++ b/arch/powerpc/xmon/spu.h
@@ -0,0 +1,126 @@
+/* SPU ELF support for BFD.
+
+   Copyright 2006 Free Software Foundation, Inc.
+
+   This file is part of GDB, GAS, and the GNU binutils.
+
+   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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+
+/* These two enums are from rel_apu/common/spu_asm_format.h */
+/* definition of instruction format */
+typedef enum {
+  RRR,
+  RI18,
+  RI16,
+  RI10,
+  RI8,
+  RI7,
+  RR,
+  LBT,
+  LBTI,
+  IDATA,
+  UNKNOWN_IFORMAT
+} spu_iformat;
+
+/* These values describe assembly instruction arguments.  They indicate
+ * how to encode, range checking and which relocation to use. */
+typedef enum {
+  A_T,  /* register at pos 0 */
+  A_A,  /* register at pos 7 */
+  A_B,  /* register at pos 14 */
+  A_C,  /* register at pos 21 */
+  A_S,  /* special purpose register at pos 7 */
+  A_H,  /* channel register at pos 7 */
+  A_P,  /* parenthesis, this has to separate regs from immediates */
+  A_S3,
+  A_S6,
+  A_S7N,
+  A_S7,
+  A_U7A,
+  A_U7B,
+  A_S10B,
+  A_S10,
+  A_S11,
+  A_S11I,
+  A_S14,
+  A_S16,
+  A_S18,
+  A_R18,
+  A_U3,
+  A_U5,
+  A_U6,
+  A_U7,
+  A_U14,
+  A_X16,
+  A_U18,
+  A_MAX
+} spu_aformat;
+
+enum spu_insns {
+#define APUOP(TAG,MACFORMAT,OPCODE,MNEMONIC,ASMFORMAT,DEP,PIPE) \
+	TAG,
+#define APUOPFB(TAG,MACFORMAT,OPCODE,FB,MNEMONIC,ASMFORMAT,DEP,PIPE) \
+	TAG,
+#include "spu-insns.h"
+#undef APUOP
+#undef APUOPFB
+        M_SPU_MAX
+};
+
+struct spu_opcode
+{
+   spu_iformat insn_type;
+   unsigned int opcode;
+   char *mnemonic;
+   int arg[5];
+};
+
+#define SIGNED_EXTRACT(insn,size,pos) (((int)((insn) << (32-size-pos))) >> (32-size))
+#define UNSIGNED_EXTRACT(insn,size,pos) (((insn) >> pos) & ((1 << size)-1))
+
+#define DECODE_INSN_RT(insn) (insn & 0x7f)
+#define DECODE_INSN_RA(insn) ((insn >> 7) & 0x7f)
+#define DECODE_INSN_RB(insn) ((insn >> 14) & 0x7f)
+#define DECODE_INSN_RC(insn) ((insn >> 21) & 0x7f)
+
+#define DECODE_INSN_I10(insn) SIGNED_EXTRACT(insn,10,14)
+#define DECODE_INSN_U10(insn) UNSIGNED_EXTRACT(insn,10,14)
+
+/* For branching, immediate loads, hbr and  lqa/stqa. */
+#define DECODE_INSN_I16(insn) SIGNED_EXTRACT(insn,16,7)
+#define DECODE_INSN_U16(insn) UNSIGNED_EXTRACT(insn,16,7)
+
+/* for stop */
+#define DECODE_INSN_U14(insn) UNSIGNED_EXTRACT(insn,14,0)
+
+/* For ila */
+#define DECODE_INSN_I18(insn) SIGNED_EXTRACT(insn,18,7)
+#define DECODE_INSN_U18(insn) UNSIGNED_EXTRACT(insn,18,7)
+
+/* For rotate and shift and generate control mask */
+#define DECODE_INSN_I7(insn) SIGNED_EXTRACT(insn,7,14)
+#define DECODE_INSN_U7(insn) UNSIGNED_EXTRACT(insn,7,14)
+
+/* For float <-> int conversion */
+#define DECODE_INSN_I8(insn)  SIGNED_EXTRACT(insn,8,14)
+#define DECODE_INSN_U8(insn) UNSIGNED_EXTRACT(insn,8,14)
+
+/* For hbr  */
+#define DECODE_INSN_I9a(insn) ((SIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))
+#define DECODE_INSN_I9b(insn) ((SIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))
+#define DECODE_INSN_U9a(insn) ((UNSIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))
+#define DECODE_INSN_U9b(insn) ((UNSIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))
+