diff --git a/disas/Makefile.objs b/disas/Makefile.objs
index abeba84..62632ef 100644
--- a/disas/Makefile.objs
+++ b/disas/Makefile.objs
@@ -15,6 +15,7 @@ common-obj-$(CONFIG_IA64_DIS) += ia64.o
 common-obj-$(CONFIG_M68K_DIS) += m68k.o
 common-obj-$(CONFIG_MICROBLAZE_DIS) += microblaze.o
 common-obj-$(CONFIG_MIPS_DIS) += mips.o
+common-obj-$(CONFIG_NIOS2_DIS) += nios2.o
 common-obj-$(CONFIG_MOXIE_DIS) += moxie.o
 common-obj-$(CONFIG_PPC_DIS) += ppc.o
 common-obj-$(CONFIG_S390_DIS) += s390.o
diff --git a/disas/nios2.c b/disas/nios2.c
new file mode 100644
index 0000000..d85d6b4
--- /dev/null
+++ b/disas/nios2.c
@@ -0,0 +1,3620 @@
+/*
+ * This file is a concatenation of the following files from binutils:
+ *   include/opcode/nios2.h
+ *   include/opcode/nios2r1.h
+ *   include/opcode/nios2r2.h
+ *   opcodes/nios2-opc.c
+ *   opcodes/nios2-dis.c
+ */
+
+/* Nios II opcode list for GAS, the GNU assembler.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+   Contributed by Nigel Gray (ngray@altera.com).
+   Contributed by Mentor Graphics, Inc.
+
+   This file is part of GAS, the GNU Assembler, and GDB, the GNU disassembler.
+
+   GAS/GDB 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 3, or (at your option)
+   any later version.
+
+   GAS/GDB 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 GAS or GDB; see the file COPYING3.  If not, write to
+   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#ifndef _NIOS2_H_
+#define _NIOS2_H_
+
+/*#include "bfd.h"*/
+#include "qemu/osdep.h"
+#include "disas/bfd.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/****************************************************************************
+ * This file contains structures, bit masks and shift counts used
+ * by the GNU toolchain to define the Nios II instruction set and
+ * access various opcode fields.
+ ****************************************************************************/
+
+/* Instruction encoding formats.  */
+enum iw_format_type {
+  /* R1 formats.  */
+  iw_i_type,
+  iw_r_type,
+  iw_j_type,
+  iw_custom_type,
+
+  /* 32-bit R2 formats.  */
+  iw_L26_type,
+  iw_F2I16_type,
+  iw_F2X4I12_type,
+  iw_F1X4I12_type,
+  iw_F1X4L17_type,
+  iw_F3X6L5_type,
+  iw_F2X6L10_type,
+  iw_F3X6_type,
+  iw_F3X8_type,
+
+  /* 16-bit R2 formats.  */
+  iw_I10_type,
+  iw_T1I7_type,
+  iw_T2I4_type,
+  iw_T1X1I6_type,
+  iw_X1I7_type,
+  iw_L5I4X1_type,
+  iw_T2X1L3_type,
+  iw_T2X1I3_type,
+  iw_T3X1_type,
+  iw_T2X3_type,
+  iw_F1X1_type,
+  iw_X2L5_type,
+  iw_F1I5_type,
+  iw_F2_type
+};
+
+/* Identify different overflow situations for error messages.  */
+enum overflow_type
+{
+  call_target_overflow = 0,
+  branch_target_overflow,
+  address_offset_overflow,
+  signed_immed16_overflow,
+  unsigned_immed16_overflow,
+  unsigned_immed5_overflow,
+  signed_immed12_overflow,
+  custom_opcode_overflow,
+  enumeration_overflow,
+  no_overflow
+};
+
+/* This structure holds information for a particular instruction. 
+
+   The args field is a string describing the operands.  The following
+   letters can appear in the args:
+     c - a 5-bit control register index
+     d - a 5-bit destination register index
+     s - a 5-bit left source register index
+     t - a 5-bit right source register index
+     D - a 3-bit encoded destination register
+     S - a 3-bit encoded left source register
+     T - a 3-bit encoded right source register
+     i - a 16-bit signed immediate
+     j - a 5-bit unsigned immediate
+     k - a (second) 5-bit unsigned immediate
+     l - a 8-bit custom instruction constant
+     m - a 26-bit unsigned immediate
+     o - a 16-bit signed pc-relative offset
+     u - a 16-bit unsigned immediate
+     I - a 12-bit signed immediate
+     M - a 6-bit unsigned immediate
+     N - a 6-bit unsigned immediate with 2-bit shift
+     O - a 10-bit signed pc-relative offset with 1-bit shift
+     P - a 7-bit signed pc-relative offset with 1-bit shift
+     U - a 7-bit unsigned immediate with 2-bit shift
+     V - a 5-bit unsigned immediate with 2-bit shift
+     W - a 4-bit unsigned immediate with 2-bit shift
+     X - a 4-bit unsigned immediate with 1-bit shift
+     Y - a 4-bit unsigned immediate
+     e - an immediate coded as an enumeration for addi.n/subi.n
+     f - an immediate coded as an enumeration for slli.n/srli.n
+     g - an immediate coded as an enumeration for andi.n
+     h - an immediate coded as an enumeration for movi.n
+     R - a reglist for ldwm/stwm or push.n/pop.n
+     B - a base register specifier and option list for ldwm/stwm
+   Literal ',', '(', and ')' characters may also appear in the args as
+   delimiters.
+
+   Note that the args describe the semantics and assembly-language syntax
+   of the operands, not their encoding into the instruction word.
+
+   The pinfo field is INSN_MACRO for a macro.  Otherwise, it is a collection
+   of bits describing the instruction, notably any relevant hazard
+   information.
+
+   When assembling, the match field contains the opcode template, which
+   is modified by the arguments to produce the actual opcode
+   that is emitted.  If pinfo is INSN_MACRO, then this is 0.
+
+   If pinfo is INSN_MACRO, the mask field stores the macro identifier.
+   Otherwise this is a bit mask for the relevant portions of the opcode
+   when disassembling.  If the actual opcode anded with the match field
+   equals the opcode field, then we have found the correct instruction.  */
+
+struct nios2_opcode
+{
+  const char *name;		/* The name of the instruction.  */
+  const char *args;		/* A string describing the arguments for this 
+				   instruction.  */
+  const char *args_test;	/* Like args, but with an extra argument for 
+				   the expected opcode.  */
+  unsigned long num_args;	/* The number of arguments the instruction 
+				   takes.  */
+  unsigned size;		/* Size in bytes of the instruction.  */
+  enum iw_format_type format;	/* Instruction format.  */
+  unsigned long match;		/* The basic opcode for the instruction.  */
+  unsigned long mask;		/* Mask for the opcode field of the 
+				   instruction.  */
+  unsigned long pinfo;		/* Is this a real instruction or instruction 
+				   macro?  */
+  enum overflow_type overflow_msg;  /* Used to generate informative 
+				       message when fixup overflows.  */
+};
+
+/* This value is used in the nios2_opcode.pinfo field to indicate that the 
+   instruction is a macro or pseudo-op.  This requires special treatment by 
+   the assembler, and is used by the disassembler to determine whether to 
+   check for a nop.  */
+#define NIOS2_INSN_MACRO	0x80000000
+#define NIOS2_INSN_MACRO_MOV	0x80000001
+#define NIOS2_INSN_MACRO_MOVI	0x80000002
+#define NIOS2_INSN_MACRO_MOVIA	0x80000004
+
+#define NIOS2_INSN_RELAXABLE	0x40000000
+#define NIOS2_INSN_UBRANCH	0x00000010
+#define NIOS2_INSN_CBRANCH	0x00000020
+#define NIOS2_INSN_CALL		0x00000040
+
+#define NIOS2_INSN_OPTARG	0x00000080
+
+/* Register attributes.  */
+#define REG_NORMAL	(1<<0)	/* Normal registers.  */
+#define REG_CONTROL	(1<<1)  /* Control registers.  */
+#define REG_COPROCESSOR	(1<<2)  /* For custom instructions.  */
+#define REG_3BIT	(1<<3)  /* For R2 CDX instructions.  */
+#define REG_LDWM	(1<<4)  /* For R2 ldwm/stwm.  */
+#define REG_POP		(1<<5)  /* For R2 pop.n/push.n.  */
+
+struct nios2_reg
+{
+  const char *name;
+  const int index;
+  unsigned long regtype;
+};
+
+/* Pull in the instruction field accessors, opcodes, and masks.  */
+/*#include "nios2r1.h"*/
+/* Nios II R1 opcode list for GAS, the GNU assembler.
+   Copyright (C) 2013-2016 Free Software Foundation, Inc.
+   Contributed by Mentor Graphics, Inc.
+
+   This file is part of GAS, the GNU Assembler, and GDB, the GNU disassembler.
+
+   GAS/GDB 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 3, or (at your option)
+   any later version.
+
+   GAS/GDB 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 GAS or GDB; see the file COPYING3.  If not, write to
+   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#ifndef _NIOS2R1_H_
+#define _NIOS2R1_H_
+
+/* R1 fields.  */
+#define IW_R1_OP_LSB 0 
+#define IW_R1_OP_SIZE 6 
+#define IW_R1_OP_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R1_OP_SIZE)) 
+#define IW_R1_OP_SHIFTED_MASK (IW_R1_OP_UNSHIFTED_MASK << IW_R1_OP_LSB) 
+#define GET_IW_R1_OP(W) (((W) >> IW_R1_OP_LSB) & IW_R1_OP_UNSHIFTED_MASK) 
+#define SET_IW_R1_OP(V) (((V) & IW_R1_OP_UNSHIFTED_MASK) << IW_R1_OP_LSB) 
+
+#define IW_I_A_LSB 27 
+#define IW_I_A_SIZE 5 
+#define IW_I_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_I_A_SIZE)) 
+#define IW_I_A_SHIFTED_MASK (IW_I_A_UNSHIFTED_MASK << IW_I_A_LSB) 
+#define GET_IW_I_A(W) (((W) >> IW_I_A_LSB) & IW_I_A_UNSHIFTED_MASK) 
+#define SET_IW_I_A(V) (((V) & IW_I_A_UNSHIFTED_MASK) << IW_I_A_LSB) 
+
+#define IW_I_B_LSB 22 
+#define IW_I_B_SIZE 5 
+#define IW_I_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_I_B_SIZE)) 
+#define IW_I_B_SHIFTED_MASK (IW_I_B_UNSHIFTED_MASK << IW_I_B_LSB) 
+#define GET_IW_I_B(W) (((W) >> IW_I_B_LSB) & IW_I_B_UNSHIFTED_MASK) 
+#define SET_IW_I_B(V) (((V) & IW_I_B_UNSHIFTED_MASK) << IW_I_B_LSB) 
+
+#define IW_I_IMM16_LSB 6 
+#define IW_I_IMM16_SIZE 16 
+#define IW_I_IMM16_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_I_IMM16_SIZE)) 
+#define IW_I_IMM16_SHIFTED_MASK (IW_I_IMM16_UNSHIFTED_MASK << IW_I_IMM16_LSB) 
+#define GET_IW_I_IMM16(W) (((W) >> IW_I_IMM16_LSB) & IW_I_IMM16_UNSHIFTED_MASK) 
+#define SET_IW_I_IMM16(V) (((V) & IW_I_IMM16_UNSHIFTED_MASK) << IW_I_IMM16_LSB) 
+
+#define IW_R_A_LSB 27 
+#define IW_R_A_SIZE 5 
+#define IW_R_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_A_SIZE)) 
+#define IW_R_A_SHIFTED_MASK (IW_R_A_UNSHIFTED_MASK << IW_R_A_LSB) 
+#define GET_IW_R_A(W) (((W) >> IW_R_A_LSB) & IW_R_A_UNSHIFTED_MASK) 
+#define SET_IW_R_A(V) (((V) & IW_R_A_UNSHIFTED_MASK) << IW_R_A_LSB) 
+
+#define IW_R_B_LSB 22 
+#define IW_R_B_SIZE 5 
+#define IW_R_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_B_SIZE)) 
+#define IW_R_B_SHIFTED_MASK (IW_R_B_UNSHIFTED_MASK << IW_R_B_LSB) 
+#define GET_IW_R_B(W) (((W) >> IW_R_B_LSB) & IW_R_B_UNSHIFTED_MASK) 
+#define SET_IW_R_B(V) (((V) & IW_R_B_UNSHIFTED_MASK) << IW_R_B_LSB) 
+
+#define IW_R_C_LSB 17 
+#define IW_R_C_SIZE 5 
+#define IW_R_C_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_C_SIZE)) 
+#define IW_R_C_SHIFTED_MASK (IW_R_C_UNSHIFTED_MASK << IW_R_C_LSB) 
+#define GET_IW_R_C(W) (((W) >> IW_R_C_LSB) & IW_R_C_UNSHIFTED_MASK) 
+#define SET_IW_R_C(V) (((V) & IW_R_C_UNSHIFTED_MASK) << IW_R_C_LSB) 
+
+#define IW_R_OPX_LSB 11 
+#define IW_R_OPX_SIZE 6 
+#define IW_R_OPX_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_OPX_SIZE)) 
+#define IW_R_OPX_SHIFTED_MASK (IW_R_OPX_UNSHIFTED_MASK << IW_R_OPX_LSB) 
+#define GET_IW_R_OPX(W) (((W) >> IW_R_OPX_LSB) & IW_R_OPX_UNSHIFTED_MASK) 
+#define SET_IW_R_OPX(V) (((V) & IW_R_OPX_UNSHIFTED_MASK) << IW_R_OPX_LSB) 
+
+#define IW_R_IMM5_LSB 6 
+#define IW_R_IMM5_SIZE 5 
+#define IW_R_IMM5_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_IMM5_SIZE)) 
+#define IW_R_IMM5_SHIFTED_MASK (IW_R_IMM5_UNSHIFTED_MASK << IW_R_IMM5_LSB) 
+#define GET_IW_R_IMM5(W) (((W) >> IW_R_IMM5_LSB) & IW_R_IMM5_UNSHIFTED_MASK) 
+#define SET_IW_R_IMM5(V) (((V) & IW_R_IMM5_UNSHIFTED_MASK) << IW_R_IMM5_LSB) 
+
+#define IW_J_IMM26_LSB 6 
+#define IW_J_IMM26_SIZE 26 
+#define IW_J_IMM26_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_J_IMM26_SIZE)) 
+#define IW_J_IMM26_SHIFTED_MASK (IW_J_IMM26_UNSHIFTED_MASK << IW_J_IMM26_LSB) 
+#define GET_IW_J_IMM26(W) (((W) >> IW_J_IMM26_LSB) & IW_J_IMM26_UNSHIFTED_MASK) 
+#define SET_IW_J_IMM26(V) (((V) & IW_J_IMM26_UNSHIFTED_MASK) << IW_J_IMM26_LSB) 
+
+#define IW_CUSTOM_A_LSB 27 
+#define IW_CUSTOM_A_SIZE 5 
+#define IW_CUSTOM_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_A_SIZE)) 
+#define IW_CUSTOM_A_SHIFTED_MASK (IW_CUSTOM_A_UNSHIFTED_MASK << IW_CUSTOM_A_LSB) 
+#define GET_IW_CUSTOM_A(W) (((W) >> IW_CUSTOM_A_LSB) & IW_CUSTOM_A_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_A(V) (((V) & IW_CUSTOM_A_UNSHIFTED_MASK) << IW_CUSTOM_A_LSB) 
+
+#define IW_CUSTOM_B_LSB 22 
+#define IW_CUSTOM_B_SIZE 5 
+#define IW_CUSTOM_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_B_SIZE)) 
+#define IW_CUSTOM_B_SHIFTED_MASK (IW_CUSTOM_B_UNSHIFTED_MASK << IW_CUSTOM_B_LSB) 
+#define GET_IW_CUSTOM_B(W) (((W) >> IW_CUSTOM_B_LSB) & IW_CUSTOM_B_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_B(V) (((V) & IW_CUSTOM_B_UNSHIFTED_MASK) << IW_CUSTOM_B_LSB) 
+
+#define IW_CUSTOM_C_LSB 17 
+#define IW_CUSTOM_C_SIZE 5 
+#define IW_CUSTOM_C_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_C_SIZE)) 
+#define IW_CUSTOM_C_SHIFTED_MASK (IW_CUSTOM_C_UNSHIFTED_MASK << IW_CUSTOM_C_LSB) 
+#define GET_IW_CUSTOM_C(W) (((W) >> IW_CUSTOM_C_LSB) & IW_CUSTOM_C_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_C(V) (((V) & IW_CUSTOM_C_UNSHIFTED_MASK) << IW_CUSTOM_C_LSB) 
+
+#define IW_CUSTOM_READA_LSB 16 
+#define IW_CUSTOM_READA_SIZE 1 
+#define IW_CUSTOM_READA_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_READA_SIZE)) 
+#define IW_CUSTOM_READA_SHIFTED_MASK (IW_CUSTOM_READA_UNSHIFTED_MASK << IW_CUSTOM_READA_LSB) 
+#define GET_IW_CUSTOM_READA(W) (((W) >> IW_CUSTOM_READA_LSB) & IW_CUSTOM_READA_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_READA(V) (((V) & IW_CUSTOM_READA_UNSHIFTED_MASK) << IW_CUSTOM_READA_LSB) 
+
+#define IW_CUSTOM_READB_LSB 15 
+#define IW_CUSTOM_READB_SIZE 1 
+#define IW_CUSTOM_READB_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_READB_SIZE)) 
+#define IW_CUSTOM_READB_SHIFTED_MASK (IW_CUSTOM_READB_UNSHIFTED_MASK << IW_CUSTOM_READB_LSB) 
+#define GET_IW_CUSTOM_READB(W) (((W) >> IW_CUSTOM_READB_LSB) & IW_CUSTOM_READB_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_READB(V) (((V) & IW_CUSTOM_READB_UNSHIFTED_MASK) << IW_CUSTOM_READB_LSB) 
+
+#define IW_CUSTOM_READC_LSB 14 
+#define IW_CUSTOM_READC_SIZE 1 
+#define IW_CUSTOM_READC_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_READC_SIZE)) 
+#define IW_CUSTOM_READC_SHIFTED_MASK (IW_CUSTOM_READC_UNSHIFTED_MASK << IW_CUSTOM_READC_LSB) 
+#define GET_IW_CUSTOM_READC(W) (((W) >> IW_CUSTOM_READC_LSB) & IW_CUSTOM_READC_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_READC(V) (((V) & IW_CUSTOM_READC_UNSHIFTED_MASK) << IW_CUSTOM_READC_LSB) 
+
+#define IW_CUSTOM_N_LSB 6 
+#define IW_CUSTOM_N_SIZE 8 
+#define IW_CUSTOM_N_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_CUSTOM_N_SIZE)) 
+#define IW_CUSTOM_N_SHIFTED_MASK (IW_CUSTOM_N_UNSHIFTED_MASK << IW_CUSTOM_N_LSB) 
+#define GET_IW_CUSTOM_N(W) (((W) >> IW_CUSTOM_N_LSB) & IW_CUSTOM_N_UNSHIFTED_MASK) 
+#define SET_IW_CUSTOM_N(V) (((V) & IW_CUSTOM_N_UNSHIFTED_MASK) << IW_CUSTOM_N_LSB) 
+
+/* R1 opcodes.  */
+#define R1_OP_CALL 0
+#define R1_OP_JMPI 1
+#define R1_OP_LDBU 3
+#define R1_OP_ADDI 4
+#define R1_OP_STB 5
+#define R1_OP_BR 6
+#define R1_OP_LDB 7
+#define R1_OP_CMPGEI 8
+#define R1_OP_LDHU 11
+#define R1_OP_ANDI 12
+#define R1_OP_STH 13
+#define R1_OP_BGE 14
+#define R1_OP_LDH 15
+#define R1_OP_CMPLTI 16
+#define R1_OP_INITDA 19
+#define R1_OP_ORI 20
+#define R1_OP_STW 21
+#define R1_OP_BLT 22
+#define R1_OP_LDW 23
+#define R1_OP_CMPNEI 24
+#define R1_OP_FLUSHDA 27
+#define R1_OP_XORI 28
+#define R1_OP_BNE 30
+#define R1_OP_CMPEQI 32
+#define R1_OP_LDBUIO 35
+#define R1_OP_MULI 36
+#define R1_OP_STBIO 37
+#define R1_OP_BEQ 38
+#define R1_OP_LDBIO 39
+#define R1_OP_CMPGEUI 40
+#define R1_OP_LDHUIO 43
+#define R1_OP_ANDHI 44
+#define R1_OP_STHIO 45
+#define R1_OP_BGEU 46
+#define R1_OP_LDHIO 47
+#define R1_OP_CMPLTUI 48
+#define R1_OP_CUSTOM 50
+#define R1_OP_INITD 51
+#define R1_OP_ORHI 52
+#define R1_OP_STWIO 53
+#define R1_OP_BLTU 54
+#define R1_OP_LDWIO 55
+#define R1_OP_RDPRS 56
+#define R1_OP_OPX 58
+#define R1_OP_FLUSHD 59
+#define R1_OP_XORHI 60
+
+#define R1_OPX_ERET 1
+#define R1_OPX_ROLI 2
+#define R1_OPX_ROL 3
+#define R1_OPX_FLUSHP 4
+#define R1_OPX_RET 5
+#define R1_OPX_NOR 6
+#define R1_OPX_MULXUU 7
+#define R1_OPX_CMPGE 8
+#define R1_OPX_BRET 9
+#define R1_OPX_ROR 11
+#define R1_OPX_FLUSHI 12
+#define R1_OPX_JMP 13
+#define R1_OPX_AND 14
+#define R1_OPX_CMPLT 16
+#define R1_OPX_SLLI 18
+#define R1_OPX_SLL 19
+#define R1_OPX_WRPRS 20
+#define R1_OPX_OR 22
+#define R1_OPX_MULXSU 23
+#define R1_OPX_CMPNE 24
+#define R1_OPX_SRLI 26
+#define R1_OPX_SRL 27
+#define R1_OPX_NEXTPC 28
+#define R1_OPX_CALLR 29
+#define R1_OPX_XOR 30
+#define R1_OPX_MULXSS 31
+#define R1_OPX_CMPEQ 32
+#define R1_OPX_DIVU 36
+#define R1_OPX_DIV 37
+#define R1_OPX_RDCTL 38
+#define R1_OPX_MUL 39
+#define R1_OPX_CMPGEU 40
+#define R1_OPX_INITI 41
+#define R1_OPX_TRAP 45
+#define R1_OPX_WRCTL 46
+#define R1_OPX_CMPLTU 48
+#define R1_OPX_ADD 49
+#define R1_OPX_BREAK 52
+#define R1_OPX_SYNC 54
+#define R1_OPX_SUB 57
+#define R1_OPX_SRAI 58
+#define R1_OPX_SRA 59
+
+/* Some convenience macros for R1 encodings, for use in instruction tables.
+   MATCH_R1_OPX0(NAME) and MASK_R1_OPX0 are used for R-type instructions
+   with 3 register operands and constant 0 in the immediate field.
+   The general forms are MATCH_R1_OPX(NAME, A, B, C) where the arguments specify
+   constant values and MASK_R1_OPX(A, B, C, N) where the arguments are booleans
+   that are true if the field should be included in the mask.
+ */
+#define MATCH_R1_OP(NAME) \
+  (SET_IW_R1_OP (R1_OP_##NAME))
+#define MASK_R1_OP \
+  IW_R1_OP_SHIFTED_MASK
+
+#define MATCH_R1_OPX0(NAME) \
+  (SET_IW_R1_OP (R1_OP_OPX) | SET_IW_R_OPX (R1_OPX_##NAME))
+#define MASK_R1_OPX0 \
+  (IW_R1_OP_SHIFTED_MASK | IW_R_OPX_SHIFTED_MASK | IW_R_IMM5_SHIFTED_MASK)
+
+#define MATCH_R1_OPX(NAME, A, B, C)				\
+  (MATCH_R1_OPX0 (NAME) | SET_IW_R_A (A) | SET_IW_R_B (B) | SET_IW_R_C (C))
+#define MASK_R1_OPX(A, B, C, N)				\
+  (IW_R1_OP_SHIFTED_MASK | IW_R_OPX_SHIFTED_MASK	\
+   | (A ? IW_R_A_SHIFTED_MASK : 0)			\
+   | (B ? IW_R_B_SHIFTED_MASK : 0)			\
+   | (C ? IW_R_C_SHIFTED_MASK : 0)			\
+   | (N ? IW_R_IMM5_SHIFTED_MASK : 0))
+
+/* And here's the match/mask macros for the R1 instruction set.  */
+#define MATCH_R1_ADD	MATCH_R1_OPX0 (ADD)
+#define MASK_R1_ADD	MASK_R1_OPX0
+#define MATCH_R1_ADDI	MATCH_R1_OP (ADDI)
+#define MASK_R1_ADDI	MASK_R1_OP
+#define MATCH_R1_AND	MATCH_R1_OPX0 (AND)
+#define MASK_R1_AND	MASK_R1_OPX0
+#define MATCH_R1_ANDHI	MATCH_R1_OP (ANDHI)
+#define MASK_R1_ANDHI	MASK_R1_OP
+#define MATCH_R1_ANDI	MATCH_R1_OP (ANDI)
+#define MASK_R1_ANDI	MASK_R1_OP
+#define MATCH_R1_BEQ	MATCH_R1_OP (BEQ)
+#define MASK_R1_BEQ	MASK_R1_OP
+#define MATCH_R1_BGE	MATCH_R1_OP (BGE)
+#define MASK_R1_BGE	MASK_R1_OP
+#define MATCH_R1_BGEU	MATCH_R1_OP (BGEU)
+#define MASK_R1_BGEU	MASK_R1_OP
+#define MATCH_R1_BGT	MATCH_R1_OP (BLT)
+#define MASK_R1_BGT	MASK_R1_OP
+#define MATCH_R1_BGTU	MATCH_R1_OP (BLTU)
+#define MASK_R1_BGTU	MASK_R1_OP
+#define MATCH_R1_BLE	MATCH_R1_OP (BGE)
+#define MASK_R1_BLE	MASK_R1_OP
+#define MATCH_R1_BLEU	MATCH_R1_OP (BGEU)
+#define MASK_R1_BLEU	MASK_R1_OP
+#define MATCH_R1_BLT	MATCH_R1_OP (BLT)
+#define MASK_R1_BLT	MASK_R1_OP
+#define MATCH_R1_BLTU	MATCH_R1_OP (BLTU)
+#define MASK_R1_BLTU	MASK_R1_OP
+#define MATCH_R1_BNE	MATCH_R1_OP (BNE)
+#define MASK_R1_BNE	MASK_R1_OP
+#define MATCH_R1_BR	MATCH_R1_OP (BR)
+#define MASK_R1_BR	MASK_R1_OP | IW_I_A_SHIFTED_MASK | IW_I_B_SHIFTED_MASK
+#define MATCH_R1_BREAK	MATCH_R1_OPX (BREAK, 0, 0, 0x1e)
+#define MASK_R1_BREAK	MASK_R1_OPX (1, 1, 1, 0)
+#define MATCH_R1_BRET	MATCH_R1_OPX (BRET, 0x1e, 0, 0)
+#define MASK_R1_BRET	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_CALL	MATCH_R1_OP (CALL)
+#define MASK_R1_CALL	MASK_R1_OP
+#define MATCH_R1_CALLR	MATCH_R1_OPX (CALLR, 0, 0, 0x1f)
+#define MASK_R1_CALLR	MASK_R1_OPX (0, 1, 1, 1)
+#define MATCH_R1_CMPEQ	MATCH_R1_OPX0 (CMPEQ)
+#define MASK_R1_CMPEQ	MASK_R1_OPX0
+#define MATCH_R1_CMPEQI	MATCH_R1_OP (CMPEQI)
+#define MASK_R1_CMPEQI	MASK_R1_OP
+#define MATCH_R1_CMPGE	MATCH_R1_OPX0 (CMPGE)
+#define MASK_R1_CMPGE	MASK_R1_OPX0
+#define MATCH_R1_CMPGEI	MATCH_R1_OP (CMPGEI)
+#define MASK_R1_CMPGEI	MASK_R1_OP
+#define MATCH_R1_CMPGEU	MATCH_R1_OPX0 (CMPGEU)
+#define MASK_R1_CMPGEU	MASK_R1_OPX0
+#define MATCH_R1_CMPGEUI	MATCH_R1_OP (CMPGEUI)
+#define MASK_R1_CMPGEUI	MASK_R1_OP
+#define MATCH_R1_CMPGT	MATCH_R1_OPX0 (CMPLT)
+#define MASK_R1_CMPGT	MASK_R1_OPX0
+#define MATCH_R1_CMPGTI	MATCH_R1_OP (CMPGEI)
+#define MASK_R1_CMPGTI	MASK_R1_OP
+#define MATCH_R1_CMPGTU	MATCH_R1_OPX0 (CMPLTU)
+#define MASK_R1_CMPGTU	MASK_R1_OPX0
+#define MATCH_R1_CMPGTUI	MATCH_R1_OP (CMPGEUI)
+#define MASK_R1_CMPGTUI	MASK_R1_OP
+#define MATCH_R1_CMPLE	MATCH_R1_OPX0 (CMPGE)
+#define MASK_R1_CMPLE	MASK_R1_OPX0
+#define MATCH_R1_CMPLEI	MATCH_R1_OP (CMPLTI)
+#define MASK_R1_CMPLEI	MASK_R1_OP
+#define MATCH_R1_CMPLEU	MATCH_R1_OPX0 (CMPGEU)
+#define MASK_R1_CMPLEU	MASK_R1_OPX0
+#define MATCH_R1_CMPLEUI	MATCH_R1_OP (CMPLTUI)
+#define MASK_R1_CMPLEUI	MASK_R1_OP
+#define MATCH_R1_CMPLT	MATCH_R1_OPX0 (CMPLT)
+#define MASK_R1_CMPLT	MASK_R1_OPX0
+#define MATCH_R1_CMPLTI	MATCH_R1_OP (CMPLTI)
+#define MASK_R1_CMPLTI	MASK_R1_OP
+#define MATCH_R1_CMPLTU	MATCH_R1_OPX0 (CMPLTU)
+#define MASK_R1_CMPLTU	MASK_R1_OPX0
+#define MATCH_R1_CMPLTUI	MATCH_R1_OP (CMPLTUI)
+#define MASK_R1_CMPLTUI	MASK_R1_OP
+#define MATCH_R1_CMPNE	MATCH_R1_OPX0 (CMPNE)
+#define MASK_R1_CMPNE	MASK_R1_OPX0
+#define MATCH_R1_CMPNEI	MATCH_R1_OP (CMPNEI)
+#define MASK_R1_CMPNEI	MASK_R1_OP
+#define MATCH_R1_CUSTOM	MATCH_R1_OP (CUSTOM)
+#define MASK_R1_CUSTOM	MASK_R1_OP
+#define MATCH_R1_DIV	MATCH_R1_OPX0 (DIV)
+#define MASK_R1_DIV	MASK_R1_OPX0
+#define MATCH_R1_DIVU	MATCH_R1_OPX0 (DIVU)
+#define MASK_R1_DIVU	MASK_R1_OPX0
+#define MATCH_R1_ERET	MATCH_R1_OPX (ERET, 0x1d, 0x1e, 0)
+#define MASK_R1_ERET	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_FLUSHD	MATCH_R1_OP (FLUSHD) | SET_IW_I_B (0)
+#define MASK_R1_FLUSHD	MASK_R1_OP | IW_I_B_SHIFTED_MASK
+#define MATCH_R1_FLUSHDA	MATCH_R1_OP (FLUSHDA) | SET_IW_I_B (0)
+#define MASK_R1_FLUSHDA	MASK_R1_OP | IW_I_B_SHIFTED_MASK
+#define MATCH_R1_FLUSHI	MATCH_R1_OPX (FLUSHI, 0, 0, 0)
+#define MASK_R1_FLUSHI	MASK_R1_OPX (0, 1, 1, 1)
+#define MATCH_R1_FLUSHP	MATCH_R1_OPX (FLUSHP, 0, 0, 0)
+#define MASK_R1_FLUSHP	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_INITD	MATCH_R1_OP (INITD) | SET_IW_I_B (0)
+#define MASK_R1_INITD	MASK_R1_OP | IW_I_B_SHIFTED_MASK
+#define MATCH_R1_INITDA	MATCH_R1_OP (INITDA) | SET_IW_I_B (0)
+#define MASK_R1_INITDA	MASK_R1_OP | IW_I_B_SHIFTED_MASK
+#define MATCH_R1_INITI	MATCH_R1_OPX (INITI, 0, 0, 0)
+#define MASK_R1_INITI	MASK_R1_OPX (0, 1, 1, 1)
+#define MATCH_R1_JMP	MATCH_R1_OPX (JMP, 0, 0, 0)
+#define MASK_R1_JMP	MASK_R1_OPX (0, 1, 1, 1)
+#define MATCH_R1_JMPI	MATCH_R1_OP (JMPI)
+#define MASK_R1_JMPI	MASK_R1_OP
+#define MATCH_R1_LDB	MATCH_R1_OP (LDB)
+#define MASK_R1_LDB	MASK_R1_OP
+#define MATCH_R1_LDBIO	MATCH_R1_OP (LDBIO)
+#define MASK_R1_LDBIO	MASK_R1_OP
+#define MATCH_R1_LDBU	MATCH_R1_OP (LDBU)
+#define MASK_R1_LDBU	MASK_R1_OP
+#define MATCH_R1_LDBUIO	MATCH_R1_OP (LDBUIO)
+#define MASK_R1_LDBUIO	MASK_R1_OP
+#define MATCH_R1_LDH	MATCH_R1_OP (LDH)
+#define MASK_R1_LDH	MASK_R1_OP
+#define MATCH_R1_LDHIO	MATCH_R1_OP (LDHIO)
+#define MASK_R1_LDHIO	MASK_R1_OP
+#define MATCH_R1_LDHU	MATCH_R1_OP (LDHU)
+#define MASK_R1_LDHU	MASK_R1_OP
+#define MATCH_R1_LDHUIO	MATCH_R1_OP (LDHUIO)
+#define MASK_R1_LDHUIO	MASK_R1_OP
+#define MATCH_R1_LDW	MATCH_R1_OP (LDW)
+#define MASK_R1_LDW	MASK_R1_OP
+#define MATCH_R1_LDWIO	MATCH_R1_OP (LDWIO)
+#define MASK_R1_LDWIO	MASK_R1_OP
+#define MATCH_R1_MOV	MATCH_R1_OPX (ADD, 0, 0, 0)
+#define MASK_R1_MOV	MASK_R1_OPX (0, 1, 0, 1)
+#define MATCH_R1_MOVHI	MATCH_R1_OP (ORHI) | SET_IW_I_A (0)
+#define MASK_R1_MOVHI	MASK_R1_OP | IW_I_A_SHIFTED_MASK
+#define MATCH_R1_MOVI	MATCH_R1_OP (ADDI) | SET_IW_I_A (0)
+#define MASK_R1_MOVI	MASK_R1_OP | IW_I_A_SHIFTED_MASK
+#define MATCH_R1_MOVUI	MATCH_R1_OP (ORI) | SET_IW_I_A (0)
+#define MASK_R1_MOVUI	MASK_R1_OP | IW_I_A_SHIFTED_MASK
+#define MATCH_R1_MUL	MATCH_R1_OPX0 (MUL)
+#define MASK_R1_MUL	MASK_R1_OPX0
+#define MATCH_R1_MULI	MATCH_R1_OP (MULI)
+#define MASK_R1_MULI	MASK_R1_OP
+#define MATCH_R1_MULXSS	MATCH_R1_OPX0 (MULXSS)
+#define MASK_R1_MULXSS	MASK_R1_OPX0
+#define MATCH_R1_MULXSU	MATCH_R1_OPX0 (MULXSU)
+#define MASK_R1_MULXSU	MASK_R1_OPX0
+#define MATCH_R1_MULXUU	MATCH_R1_OPX0 (MULXUU)
+#define MASK_R1_MULXUU	MASK_R1_OPX0
+#define MATCH_R1_NEXTPC	MATCH_R1_OPX (NEXTPC, 0, 0, 0)
+#define MASK_R1_NEXTPC	MASK_R1_OPX (1, 1, 0, 1)
+#define MATCH_R1_NOP	MATCH_R1_OPX (ADD, 0, 0, 0)
+#define MASK_R1_NOP	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_NOR	MATCH_R1_OPX0 (NOR)
+#define MASK_R1_NOR	MASK_R1_OPX0
+#define MATCH_R1_OR	MATCH_R1_OPX0 (OR)
+#define MASK_R1_OR	MASK_R1_OPX0
+#define MATCH_R1_ORHI	MATCH_R1_OP (ORHI)
+#define MASK_R1_ORHI	MASK_R1_OP
+#define MATCH_R1_ORI	MATCH_R1_OP (ORI)
+#define MASK_R1_ORI	MASK_R1_OP
+#define MATCH_R1_RDCTL	MATCH_R1_OPX (RDCTL, 0, 0, 0)
+#define MASK_R1_RDCTL	MASK_R1_OPX (1, 1, 0, 0)
+#define MATCH_R1_RDPRS	MATCH_R1_OP (RDPRS)
+#define MASK_R1_RDPRS	MASK_R1_OP
+#define MATCH_R1_RET	MATCH_R1_OPX (RET, 0x1f, 0, 0)
+#define MASK_R1_RET	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_ROL	MATCH_R1_OPX0 (ROL)
+#define MASK_R1_ROL	MASK_R1_OPX0
+#define MATCH_R1_ROLI	MATCH_R1_OPX (ROLI, 0, 0, 0)
+#define MASK_R1_ROLI	MASK_R1_OPX (0, 1, 0, 0)
+#define MATCH_R1_ROR	MATCH_R1_OPX0 (ROR)
+#define MASK_R1_ROR	MASK_R1_OPX0
+#define MATCH_R1_SLL	MATCH_R1_OPX0 (SLL)
+#define MASK_R1_SLL	MASK_R1_OPX0
+#define MATCH_R1_SLLI	MATCH_R1_OPX (SLLI, 0, 0, 0)
+#define MASK_R1_SLLI	MASK_R1_OPX (0, 1, 0, 0)
+#define MATCH_R1_SRA	MATCH_R1_OPX0 (SRA)
+#define MASK_R1_SRA	MASK_R1_OPX0
+#define MATCH_R1_SRAI	MATCH_R1_OPX (SRAI, 0, 0, 0)
+#define MASK_R1_SRAI	MASK_R1_OPX (0, 1, 0, 0)
+#define MATCH_R1_SRL	MATCH_R1_OPX0 (SRL)
+#define MASK_R1_SRL	MASK_R1_OPX0
+#define MATCH_R1_SRLI	MATCH_R1_OPX (SRLI, 0, 0, 0)
+#define MASK_R1_SRLI	MASK_R1_OPX (0, 1, 0, 0)
+#define MATCH_R1_STB	MATCH_R1_OP (STB)
+#define MASK_R1_STB	MASK_R1_OP
+#define MATCH_R1_STBIO	MATCH_R1_OP (STBIO)
+#define MASK_R1_STBIO	MASK_R1_OP
+#define MATCH_R1_STH	MATCH_R1_OP (STH)
+#define MASK_R1_STH	MASK_R1_OP
+#define MATCH_R1_STHIO	MATCH_R1_OP (STHIO)
+#define MASK_R1_STHIO	MASK_R1_OP
+#define MATCH_R1_STW	MATCH_R1_OP (STW)
+#define MASK_R1_STW	MASK_R1_OP
+#define MATCH_R1_STWIO	MATCH_R1_OP (STWIO)
+#define MASK_R1_STWIO	MASK_R1_OP
+#define MATCH_R1_SUB	MATCH_R1_OPX0 (SUB)
+#define MASK_R1_SUB	MASK_R1_OPX0
+#define MATCH_R1_SUBI	MATCH_R1_OP (ADDI)
+#define MASK_R1_SUBI	MASK_R1_OP
+#define MATCH_R1_SYNC	MATCH_R1_OPX (SYNC, 0, 0, 0)
+#define MASK_R1_SYNC	MASK_R1_OPX (1, 1, 1, 1)
+#define MATCH_R1_TRAP	MATCH_R1_OPX (TRAP, 0, 0, 0x1d)
+#define MASK_R1_TRAP	MASK_R1_OPX (1, 1, 1, 0)
+#define MATCH_R1_WRCTL	MATCH_R1_OPX (WRCTL, 0, 0, 0)
+#define MASK_R1_WRCTL	MASK_R1_OPX (0, 1, 1, 0)
+#define MATCH_R1_WRPRS	MATCH_R1_OPX (WRPRS, 0, 0, 0)
+#define MASK_R1_WRPRS	MASK_R1_OPX (0, 1, 0, 1)
+#define MATCH_R1_XOR	MATCH_R1_OPX0 (XOR)
+#define MASK_R1_XOR	MASK_R1_OPX0
+#define MATCH_R1_XORHI	MATCH_R1_OP (XORHI)
+#define MASK_R1_XORHI	MASK_R1_OP
+#define MATCH_R1_XORI	MATCH_R1_OP (XORI)
+#define MASK_R1_XORI	MASK_R1_OP
+
+#endif /* _NIOS2R1_H */
+/*#include "nios2r2.h"*/
+/* Nios II R2 opcode list for GAS, the GNU assembler.
+   Copyright (C) 2013-2016 Free Software Foundation, Inc.
+   Contributed by Mentor Graphics, Inc.
+
+   This file is part of GAS, the GNU Assembler, and GDB, the GNU disassembler.
+
+   GAS/GDB 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 3, or (at your option)
+   any later version.
+
+   GAS/GDB 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 GAS or GDB; see the file COPYING3.  If not, write to
+   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#ifndef _NIOS2R2_H_
+#define _NIOS2R2_H_
+
+/* Fields for 32-bit R2 instructions.  */
+
+#define IW_R2_OP_LSB 0
+#define IW_R2_OP_SIZE 6
+#define IW_R2_OP_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R2_OP_SIZE))
+#define IW_R2_OP_SHIFTED_MASK (IW_R2_OP_UNSHIFTED_MASK << IW_R2_OP_LSB)
+#define GET_IW_R2_OP(W) (((W) >> IW_R2_OP_LSB) & IW_R2_OP_UNSHIFTED_MASK)
+#define SET_IW_R2_OP(V) (((V) & IW_R2_OP_UNSHIFTED_MASK) << IW_R2_OP_LSB)
+
+#define IW_L26_IMM26_LSB 6
+#define IW_L26_IMM26_SIZE 26
+#define IW_L26_IMM26_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L26_IMM26_SIZE))
+#define IW_L26_IMM26_SHIFTED_MASK (IW_L26_IMM26_UNSHIFTED_MASK << IW_L26_IMM26_LSB)
+#define GET_IW_L26_IMM26(W) (((W) >> IW_L26_IMM26_LSB) & IW_L26_IMM26_UNSHIFTED_MASK)
+#define SET_IW_L26_IMM26(V) (((V) & IW_L26_IMM26_UNSHIFTED_MASK) << IW_L26_IMM26_LSB)
+
+#define IW_F2I16_A_LSB 6
+#define IW_F2I16_A_SIZE 5
+#define IW_F2I16_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2I16_A_SIZE))
+#define IW_F2I16_A_SHIFTED_MASK (IW_F2I16_A_UNSHIFTED_MASK << IW_F2I16_A_LSB)
+#define GET_IW_F2I16_A(W) (((W) >> IW_F2I16_A_LSB) & IW_F2I16_A_UNSHIFTED_MASK)
+#define SET_IW_F2I16_A(V) (((V) & IW_F2I16_A_UNSHIFTED_MASK) << IW_F2I16_A_LSB)
+
+#define IW_F2I16_B_LSB 11
+#define IW_F2I16_B_SIZE 5
+#define IW_F2I16_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2I16_B_SIZE))
+#define IW_F2I16_B_SHIFTED_MASK (IW_F2I16_B_UNSHIFTED_MASK << IW_F2I16_B_LSB)
+#define GET_IW_F2I16_B(W) (((W) >> IW_F2I16_B_LSB) & IW_F2I16_B_UNSHIFTED_MASK)
+#define SET_IW_F2I16_B(V) (((V) & IW_F2I16_B_UNSHIFTED_MASK) << IW_F2I16_B_LSB)
+
+#define IW_F2I16_IMM16_LSB 16
+#define IW_F2I16_IMM16_SIZE 16
+#define IW_F2I16_IMM16_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2I16_IMM16_SIZE))
+#define IW_F2I16_IMM16_SHIFTED_MASK (IW_F2I16_IMM16_UNSHIFTED_MASK << IW_F2I16_IMM16_LSB)
+#define GET_IW_F2I16_IMM16(W) (((W) >> IW_F2I16_IMM16_LSB) & IW_F2I16_IMM16_UNSHIFTED_MASK)
+#define SET_IW_F2I16_IMM16(V) (((V) & IW_F2I16_IMM16_UNSHIFTED_MASK) << IW_F2I16_IMM16_LSB)
+
+/* Common to all three I12-group formats F2X4I12, F1X4I12, F1X4L17.  */
+#define IW_I12_X_LSB 28
+#define IW_I12_X_SIZE 4
+#define IW_I12_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_I12_X_SIZE))
+#define IW_I12_X_SHIFTED_MASK (IW_I12_X_UNSHIFTED_MASK << IW_I12_X_LSB)
+#define GET_IW_I12_X(W) (((W) >> IW_I12_X_LSB) & IW_I12_X_UNSHIFTED_MASK)
+#define SET_IW_I12_X(V) (((V) & IW_I12_X_UNSHIFTED_MASK) << IW_I12_X_LSB)
+
+#define IW_F2X4I12_A_LSB 6
+#define IW_F2X4I12_A_SIZE 5
+#define IW_F2X4I12_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X4I12_A_SIZE))
+#define IW_F2X4I12_A_SHIFTED_MASK (IW_F2X4I12_A_UNSHIFTED_MASK << IW_F2X4I12_A_LSB)
+#define GET_IW_F2X4I12_A(W) (((W) >> IW_F2X4I12_A_LSB) & IW_F2X4I12_A_UNSHIFTED_MASK)
+#define SET_IW_F2X4I12_A(V) (((V) & IW_F2X4I12_A_UNSHIFTED_MASK) << IW_F2X4I12_A_LSB)
+
+#define IW_F2X4I12_B_LSB 11
+#define IW_F2X4I12_B_SIZE 5
+#define IW_F2X4I12_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X4I12_B_SIZE))
+#define IW_F2X4I12_B_SHIFTED_MASK (IW_F2X4I12_B_UNSHIFTED_MASK << IW_F2X4I12_B_LSB)
+#define GET_IW_F2X4I12_B(W) (((W) >> IW_F2X4I12_B_LSB) & IW_F2X4I12_B_UNSHIFTED_MASK)
+#define SET_IW_F2X4I12_B(V) (((V) & IW_F2X4I12_B_UNSHIFTED_MASK) << IW_F2X4I12_B_LSB)
+
+#define IW_F2X4I12_IMM12_LSB 16
+#define IW_F2X4I12_IMM12_SIZE 12
+#define IW_F2X4I12_IMM12_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X4I12_IMM12_SIZE))
+#define IW_F2X4I12_IMM12_SHIFTED_MASK (IW_F2X4I12_IMM12_UNSHIFTED_MASK << IW_F2X4I12_IMM12_LSB)
+#define GET_IW_F2X4I12_IMM12(W) (((W) >> IW_F2X4I12_IMM12_LSB) & IW_F2X4I12_IMM12_UNSHIFTED_MASK)
+#define SET_IW_F2X4I12_IMM12(V) (((V) & IW_F2X4I12_IMM12_UNSHIFTED_MASK) << IW_F2X4I12_IMM12_LSB)
+
+#define IW_F1X4I12_A_LSB 6
+#define IW_F1X4I12_A_SIZE 5
+#define IW_F1X4I12_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4I12_A_SIZE))
+#define IW_F1X4I12_A_SHIFTED_MASK (IW_F1X4I12_A_UNSHIFTED_MASK << IW_F1X4I12_A_LSB)
+#define GET_IW_F1X4I12_A(W) (((W) >> IW_F1X4I12_A_LSB) & IW_F1X4I12_A_UNSHIFTED_MASK)
+#define SET_IW_F1X4I12_A(V) (((V) & IW_F1X4I12_A_UNSHIFTED_MASK) << IW_F1X4I12_A_LSB)
+
+#define IW_F1X4I12_X_LSB 11
+#define IW_F1X4I12_X_SIZE 5
+#define IW_F1X4I12_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4I12_X_SIZE))
+#define IW_F1X4I12_X_SHIFTED_MASK (IW_F1X4I12_X_UNSHIFTED_MASK << IW_F1X4I12_X_LSB)
+#define GET_IW_F1X4I12_X(W) (((W) >> IW_F1X4I12_X_LSB) & IW_F1X4I12_X_UNSHIFTED_MASK)
+#define SET_IW_F1X4I12_X(V) (((V) & IW_F1X4I12_X_UNSHIFTED_MASK) << IW_F1X4I12_X_LSB)
+
+#define IW_F1X4I12_IMM12_LSB 16
+#define IW_F1X4I12_IMM12_SIZE 12
+#define IW_F1X4I12_IMM12_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4I12_IMM12_SIZE))
+#define IW_F1X4I12_IMM12_SHIFTED_MASK (IW_F1X4I12_IMM12_UNSHIFTED_MASK << IW_F1X4I12_IMM12_LSB)
+#define GET_IW_F1X4I12_IMM12(W) (((W) >> IW_F1X4I12_IMM12_LSB) & IW_F1X4I12_IMM12_UNSHIFTED_MASK)
+#define SET_IW_F1X4I12_IMM12(V) (((V) & IW_F1X4I12_IMM12_UNSHIFTED_MASK) << IW_F1X4I12_IMM12_LSB)
+
+#define IW_F1X4L17_A_LSB 6
+#define IW_F1X4L17_A_SIZE 5
+#define IW_F1X4L17_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_A_SIZE))
+#define IW_F1X4L17_A_SHIFTED_MASK (IW_F1X4L17_A_UNSHIFTED_MASK << IW_F1X4L17_A_LSB)
+#define GET_IW_F1X4L17_A(W) (((W) >> IW_F1X4L17_A_LSB) & IW_F1X4L17_A_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_A(V) (((V) & IW_F1X4L17_A_UNSHIFTED_MASK) << IW_F1X4L17_A_LSB)
+
+#define IW_F1X4L17_ID_LSB 11
+#define IW_F1X4L17_ID_SIZE 1
+#define IW_F1X4L17_ID_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_ID_SIZE))
+#define IW_F1X4L17_ID_SHIFTED_MASK (IW_F1X4L17_ID_UNSHIFTED_MASK << IW_F1X4L17_ID_LSB)
+#define GET_IW_F1X4L17_ID(W) (((W) >> IW_F1X4L17_ID_LSB) & IW_F1X4L17_ID_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_ID(V) (((V) & IW_F1X4L17_ID_UNSHIFTED_MASK) << IW_F1X4L17_ID_LSB)
+
+#define IW_F1X4L17_WB_LSB 12
+#define IW_F1X4L17_WB_SIZE 1
+#define IW_F1X4L17_WB_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_WB_SIZE))
+#define IW_F1X4L17_WB_SHIFTED_MASK (IW_F1X4L17_WB_UNSHIFTED_MASK << IW_F1X4L17_WB_LSB)
+#define GET_IW_F1X4L17_WB(W) (((W) >> IW_F1X4L17_WB_LSB) & IW_F1X4L17_WB_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_WB(V) (((V) & IW_F1X4L17_WB_UNSHIFTED_MASK) << IW_F1X4L17_WB_LSB)
+
+#define IW_F1X4L17_RS_LSB 13
+#define IW_F1X4L17_RS_SIZE 1
+#define IW_F1X4L17_RS_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_RS_SIZE))
+#define IW_F1X4L17_RS_SHIFTED_MASK (IW_F1X4L17_RS_UNSHIFTED_MASK << IW_F1X4L17_RS_LSB)
+#define GET_IW_F1X4L17_RS(W) (((W) >> IW_F1X4L17_RS_LSB) & IW_F1X4L17_RS_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_RS(V) (((V) & IW_F1X4L17_RS_UNSHIFTED_MASK) << IW_F1X4L17_RS_LSB)
+
+#define IW_F1X4L17_PC_LSB 14
+#define IW_F1X4L17_PC_SIZE 1
+#define IW_F1X4L17_PC_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_PC_SIZE))
+#define IW_F1X4L17_PC_SHIFTED_MASK (IW_F1X4L17_PC_UNSHIFTED_MASK << IW_F1X4L17_PC_LSB)
+#define GET_IW_F1X4L17_PC(W) (((W) >> IW_F1X4L17_PC_LSB) & IW_F1X4L17_PC_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_PC(V) (((V) & IW_F1X4L17_PC_UNSHIFTED_MASK) << IW_F1X4L17_PC_LSB)
+
+#define IW_F1X4L17_RSV_LSB 15
+#define IW_F1X4L17_RSV_SIZE 1
+#define IW_F1X4L17_RSV_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_RSV_SIZE))
+#define IW_F1X4L17_RSV_SHIFTED_MASK (IW_F1X4L17_RSV_UNSHIFTED_MASK << IW_F1X4L17_RSV_LSB)
+#define GET_IW_F1X4L17_RSV(W) (((W) >> IW_F1X4L17_RSV_LSB) & IW_F1X4L17_RSV_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_RSV(V) (((V) & IW_F1X4L17_RSV_UNSHIFTED_MASK) << IW_F1X4L17_RSV_LSB)
+
+#define IW_F1X4L17_REGMASK_LSB 16
+#define IW_F1X4L17_REGMASK_SIZE 12
+#define IW_F1X4L17_REGMASK_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X4L17_REGMASK_SIZE))
+#define IW_F1X4L17_REGMASK_SHIFTED_MASK (IW_F1X4L17_REGMASK_UNSHIFTED_MASK << IW_F1X4L17_REGMASK_LSB)
+#define GET_IW_F1X4L17_REGMASK(W) (((W) >> IW_F1X4L17_REGMASK_LSB) & IW_F1X4L17_REGMASK_UNSHIFTED_MASK)
+#define SET_IW_F1X4L17_REGMASK(V) (((V) & IW_F1X4L17_REGMASK_UNSHIFTED_MASK) << IW_F1X4L17_REGMASK_LSB)
+
+/* Shared by OPX-group formats F3X6L5, F2X6L10, F3X6.  */
+#define IW_OPX_X_LSB 26
+#define IW_OPX_X_SIZE 6
+#define IW_OPX_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_OPX_X_SIZE))
+#define IW_OPX_X_SHIFTED_MASK (IW_OPX_X_UNSHIFTED_MASK << IW_OPX_X_LSB)
+#define GET_IW_OPX_X(W) (((W) >> IW_OPX_X_LSB) & IW_OPX_X_UNSHIFTED_MASK)
+#define SET_IW_OPX_X(V) (((V) & IW_OPX_X_UNSHIFTED_MASK) << IW_OPX_X_LSB)
+
+/* F3X6L5 accessors are also used for F3X6 formats.  */
+#define IW_F3X6L5_A_LSB 6
+#define IW_F3X6L5_A_SIZE 5
+#define IW_F3X6L5_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X6L5_A_SIZE))
+#define IW_F3X6L5_A_SHIFTED_MASK (IW_F3X6L5_A_UNSHIFTED_MASK << IW_F3X6L5_A_LSB)
+#define GET_IW_F3X6L5_A(W) (((W) >> IW_F3X6L5_A_LSB) & IW_F3X6L5_A_UNSHIFTED_MASK)
+#define SET_IW_F3X6L5_A(V) (((V) & IW_F3X6L5_A_UNSHIFTED_MASK) << IW_F3X6L5_A_LSB)
+
+#define IW_F3X6L5_B_LSB 11
+#define IW_F3X6L5_B_SIZE 5
+#define IW_F3X6L5_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X6L5_B_SIZE))
+#define IW_F3X6L5_B_SHIFTED_MASK (IW_F3X6L5_B_UNSHIFTED_MASK << IW_F3X6L5_B_LSB)
+#define GET_IW_F3X6L5_B(W) (((W) >> IW_F3X6L5_B_LSB) & IW_F3X6L5_B_UNSHIFTED_MASK)
+#define SET_IW_F3X6L5_B(V) (((V) & IW_F3X6L5_B_UNSHIFTED_MASK) << IW_F3X6L5_B_LSB)
+
+#define IW_F3X6L5_C_LSB 16
+#define IW_F3X6L5_C_SIZE 5
+#define IW_F3X6L5_C_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X6L5_C_SIZE))
+#define IW_F3X6L5_C_SHIFTED_MASK (IW_F3X6L5_C_UNSHIFTED_MASK << IW_F3X6L5_C_LSB)
+#define GET_IW_F3X6L5_C(W) (((W) >> IW_F3X6L5_C_LSB) & IW_F3X6L5_C_UNSHIFTED_MASK)
+#define SET_IW_F3X6L5_C(V) (((V) & IW_F3X6L5_C_UNSHIFTED_MASK) << IW_F3X6L5_C_LSB)
+
+#define IW_F3X6L5_IMM5_LSB 21
+#define IW_F3X6L5_IMM5_SIZE 5
+#define IW_F3X6L5_IMM5_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X6L5_IMM5_SIZE))
+#define IW_F3X6L5_IMM5_SHIFTED_MASK (IW_F3X6L5_IMM5_UNSHIFTED_MASK << IW_F3X6L5_IMM5_LSB)
+#define GET_IW_F3X6L5_IMM5(W) (((W) >> IW_F3X6L5_IMM5_LSB) & IW_F3X6L5_IMM5_UNSHIFTED_MASK)
+#define SET_IW_F3X6L5_IMM5(V) (((V) & IW_F3X6L5_IMM5_UNSHIFTED_MASK) << IW_F3X6L5_IMM5_LSB)
+
+#define IW_F2X6L10_A_LSB 6
+#define IW_F2X6L10_A_SIZE 5
+#define IW_F2X6L10_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X6L10_A_SIZE))
+#define IW_F2X6L10_A_SHIFTED_MASK (IW_F2X6L10_A_UNSHIFTED_MASK << IW_F2X6L10_A_LSB)
+#define GET_IW_F2X6L10_A(W) (((W) >> IW_F2X6L10_A_LSB) & IW_F2X6L10_A_UNSHIFTED_MASK)
+#define SET_IW_F2X6L10_A(V) (((V) & IW_F2X6L10_A_UNSHIFTED_MASK) << IW_F2X6L10_A_LSB)
+
+#define IW_F2X6L10_B_LSB 11
+#define IW_F2X6L10_B_SIZE 5
+#define IW_F2X6L10_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X6L10_B_SIZE))
+#define IW_F2X6L10_B_SHIFTED_MASK (IW_F2X6L10_B_UNSHIFTED_MASK << IW_F2X6L10_B_LSB)
+#define GET_IW_F2X6L10_B(W) (((W) >> IW_F2X6L10_B_LSB) & IW_F2X6L10_B_UNSHIFTED_MASK)
+#define SET_IW_F2X6L10_B(V) (((V) & IW_F2X6L10_B_UNSHIFTED_MASK) << IW_F2X6L10_B_LSB)
+
+#define IW_F2X6L10_LSB_LSB 16
+#define IW_F2X6L10_LSB_SIZE 5
+#define IW_F2X6L10_LSB_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X6L10_LSB_SIZE))
+#define IW_F2X6L10_LSB_SHIFTED_MASK (IW_F2X6L10_LSB_UNSHIFTED_MASK << IW_F2X6L10_LSB_LSB)
+#define GET_IW_F2X6L10_LSB(W) (((W) >> IW_F2X6L10_LSB_LSB) & IW_F2X6L10_LSB_UNSHIFTED_MASK)
+#define SET_IW_F2X6L10_LSB(V) (((V) & IW_F2X6L10_LSB_UNSHIFTED_MASK) << IW_F2X6L10_LSB_LSB)
+
+#define IW_F2X6L10_MSB_LSB 21
+#define IW_F2X6L10_MSB_SIZE 5
+#define IW_F2X6L10_MSB_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2X6L10_MSB_SIZE))
+#define IW_F2X6L10_MSB_SHIFTED_MASK (IW_F2X6L10_MSB_UNSHIFTED_MASK << IW_F2X6L10_MSB_LSB)
+#define GET_IW_F2X6L10_MSB(W) (((W) >> IW_F2X6L10_MSB_LSB) & IW_F2X6L10_MSB_UNSHIFTED_MASK)
+#define SET_IW_F2X6L10_MSB(V) (((V) & IW_F2X6L10_MSB_UNSHIFTED_MASK) << IW_F2X6L10_MSB_LSB)
+
+#define IW_F3X8_A_LSB 6
+#define IW_F3X8_A_SIZE 5
+#define IW_F3X8_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_A_SIZE))
+#define IW_F3X8_A_SHIFTED_MASK (IW_F3X8_A_UNSHIFTED_MASK << IW_F3X8_A_LSB)
+#define GET_IW_F3X8_A(W) (((W) >> IW_F3X8_A_LSB) & IW_F3X8_A_UNSHIFTED_MASK)
+#define SET_IW_F3X8_A(V) (((V) & IW_F3X8_A_UNSHIFTED_MASK) << IW_F3X8_A_LSB)
+
+#define IW_F3X8_B_LSB 11
+#define IW_F3X8_B_SIZE 5
+#define IW_F3X8_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_B_SIZE))
+#define IW_F3X8_B_SHIFTED_MASK (IW_F3X8_B_UNSHIFTED_MASK << IW_F3X8_B_LSB)
+#define GET_IW_F3X8_B(W) (((W) >> IW_F3X8_B_LSB) & IW_F3X8_B_UNSHIFTED_MASK)
+#define SET_IW_F3X8_B(V) (((V) & IW_F3X8_B_UNSHIFTED_MASK) << IW_F3X8_B_LSB)
+
+#define IW_F3X8_C_LSB 16
+#define IW_F3X8_C_SIZE 5
+#define IW_F3X8_C_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_C_SIZE))
+#define IW_F3X8_C_SHIFTED_MASK (IW_F3X8_C_UNSHIFTED_MASK << IW_F3X8_C_LSB)
+#define GET_IW_F3X8_C(W) (((W) >> IW_F3X8_C_LSB) & IW_F3X8_C_UNSHIFTED_MASK)
+#define SET_IW_F3X8_C(V) (((V) & IW_F3X8_C_UNSHIFTED_MASK) << IW_F3X8_C_LSB)
+
+#define IW_F3X8_READA_LSB 21
+#define IW_F3X8_READA_SIZE 1
+#define IW_F3X8_READA_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_READA_SIZE))
+#define IW_F3X8_READA_SHIFTED_MASK (IW_F3X8_READA_UNSHIFTED_MASK << IW_F3X8_READA_LSB)
+#define GET_IW_F3X8_READA(W) (((W) >> IW_F3X8_READA_LSB) & IW_F3X8_READA_UNSHIFTED_MASK)
+#define SET_IW_F3X8_READA(V) (((V) & IW_F3X8_READA_UNSHIFTED_MASK) << IW_F3X8_READA_LSB)
+
+#define IW_F3X8_READB_LSB 22
+#define IW_F3X8_READB_SIZE 1
+#define IW_F3X8_READB_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_READB_SIZE))
+#define IW_F3X8_READB_SHIFTED_MASK (IW_F3X8_READB_UNSHIFTED_MASK << IW_F3X8_READB_LSB)
+#define GET_IW_F3X8_READB(W) (((W) >> IW_F3X8_READB_LSB) & IW_F3X8_READB_UNSHIFTED_MASK)
+#define SET_IW_F3X8_READB(V) (((V) & IW_F3X8_READB_UNSHIFTED_MASK) << IW_F3X8_READB_LSB)
+
+#define IW_F3X8_READC_LSB 23
+#define IW_F3X8_READC_SIZE 1
+#define IW_F3X8_READC_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_READC_SIZE))
+#define IW_F3X8_READC_SHIFTED_MASK (IW_F3X8_READC_UNSHIFTED_MASK << IW_F3X8_READC_LSB)
+#define GET_IW_F3X8_READC(W) (((W) >> IW_F3X8_READC_LSB) & IW_F3X8_READC_UNSHIFTED_MASK)
+#define SET_IW_F3X8_READC(V) (((V) & IW_F3X8_READC_UNSHIFTED_MASK) << IW_F3X8_READC_LSB)
+
+#define IW_F3X8_N_LSB 24
+#define IW_F3X8_N_SIZE 8
+#define IW_F3X8_N_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F3X8_N_SIZE))
+#define IW_F3X8_N_SHIFTED_MASK (IW_F3X8_N_UNSHIFTED_MASK << IW_F3X8_N_LSB)
+#define GET_IW_F3X8_N(W) (((W) >> IW_F3X8_N_LSB) & IW_F3X8_N_UNSHIFTED_MASK)
+#define SET_IW_F3X8_N(V) (((V) & IW_F3X8_N_UNSHIFTED_MASK) << IW_F3X8_N_LSB)
+
+/* 16-bit R2 fields.  */
+
+#define IW_I10_IMM10_LSB 6
+#define IW_I10_IMM10_SIZE 10
+#define IW_I10_IMM10_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_I10_IMM10_SIZE))
+#define IW_I10_IMM10_SHIFTED_MASK (IW_I10_IMM10_UNSHIFTED_MASK << IW_I10_IMM10_LSB)
+#define GET_IW_I10_IMM10(W) (((W) >> IW_I10_IMM10_LSB) & IW_I10_IMM10_UNSHIFTED_MASK)
+#define SET_IW_I10_IMM10(V) (((V) & IW_I10_IMM10_UNSHIFTED_MASK) << IW_I10_IMM10_LSB)
+
+#define IW_T1I7_A3_LSB 6
+#define IW_T1I7_A3_SIZE 3
+#define IW_T1I7_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T1I7_A3_SIZE))
+#define IW_T1I7_A3_SHIFTED_MASK (IW_T1I7_A3_UNSHIFTED_MASK << IW_T1I7_A3_LSB)
+#define GET_IW_T1I7_A3(W) (((W) >> IW_T1I7_A3_LSB) & IW_T1I7_A3_UNSHIFTED_MASK)
+#define SET_IW_T1I7_A3(V) (((V) & IW_T1I7_A3_UNSHIFTED_MASK) << IW_T1I7_A3_LSB)
+
+#define IW_T1I7_IMM7_LSB 9
+#define IW_T1I7_IMM7_SIZE 7
+#define IW_T1I7_IMM7_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T1I7_IMM7_SIZE))
+#define IW_T1I7_IMM7_SHIFTED_MASK (IW_T1I7_IMM7_UNSHIFTED_MASK << IW_T1I7_IMM7_LSB)
+#define GET_IW_T1I7_IMM7(W) (((W) >> IW_T1I7_IMM7_LSB) & IW_T1I7_IMM7_UNSHIFTED_MASK)
+#define SET_IW_T1I7_IMM7(V) (((V) & IW_T1I7_IMM7_UNSHIFTED_MASK) << IW_T1I7_IMM7_LSB)
+
+#define IW_T2I4_A3_LSB 6
+#define IW_T2I4_A3_SIZE 3
+#define IW_T2I4_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2I4_A3_SIZE))
+#define IW_T2I4_A3_SHIFTED_MASK (IW_T2I4_A3_UNSHIFTED_MASK << IW_T2I4_A3_LSB)
+#define GET_IW_T2I4_A3(W) (((W) >> IW_T2I4_A3_LSB) & IW_T2I4_A3_UNSHIFTED_MASK)
+#define SET_IW_T2I4_A3(V) (((V) & IW_T2I4_A3_UNSHIFTED_MASK) << IW_T2I4_A3_LSB)
+
+#define IW_T2I4_B3_LSB 9
+#define IW_T2I4_B3_SIZE 3
+#define IW_T2I4_B3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2I4_B3_SIZE))
+#define IW_T2I4_B3_SHIFTED_MASK (IW_T2I4_B3_UNSHIFTED_MASK << IW_T2I4_B3_LSB)
+#define GET_IW_T2I4_B3(W) (((W) >> IW_T2I4_B3_LSB) & IW_T2I4_B3_UNSHIFTED_MASK)
+#define SET_IW_T2I4_B3(V) (((V) & IW_T2I4_B3_UNSHIFTED_MASK) << IW_T2I4_B3_LSB)
+
+#define IW_T2I4_IMM4_LSB 12
+#define IW_T2I4_IMM4_SIZE 4
+#define IW_T2I4_IMM4_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2I4_IMM4_SIZE))
+#define IW_T2I4_IMM4_SHIFTED_MASK (IW_T2I4_IMM4_UNSHIFTED_MASK << IW_T2I4_IMM4_LSB)
+#define GET_IW_T2I4_IMM4(W) (((W) >> IW_T2I4_IMM4_LSB) & IW_T2I4_IMM4_UNSHIFTED_MASK)
+#define SET_IW_T2I4_IMM4(V) (((V) & IW_T2I4_IMM4_UNSHIFTED_MASK) << IW_T2I4_IMM4_LSB)
+
+#define IW_T1X1I6_A3_LSB 6
+#define IW_T1X1I6_A3_SIZE 3
+#define IW_T1X1I6_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T1X1I6_A3_SIZE))
+#define IW_T1X1I6_A3_SHIFTED_MASK (IW_T1X1I6_A3_UNSHIFTED_MASK << IW_T1X1I6_A3_LSB)
+#define GET_IW_T1X1I6_A3(W) (((W) >> IW_T1X1I6_A3_LSB) & IW_T1X1I6_A3_UNSHIFTED_MASK)
+#define SET_IW_T1X1I6_A3(V) (((V) & IW_T1X1I6_A3_UNSHIFTED_MASK) << IW_T1X1I6_A3_LSB)
+
+#define IW_T1X1I6_IMM6_LSB 9
+#define IW_T1X1I6_IMM6_SIZE 6
+#define IW_T1X1I6_IMM6_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T1X1I6_IMM6_SIZE))
+#define IW_T1X1I6_IMM6_SHIFTED_MASK (IW_T1X1I6_IMM6_UNSHIFTED_MASK << IW_T1X1I6_IMM6_LSB)
+#define GET_IW_T1X1I6_IMM6(W) (((W) >> IW_T1X1I6_IMM6_LSB) & IW_T1X1I6_IMM6_UNSHIFTED_MASK)
+#define SET_IW_T1X1I6_IMM6(V) (((V) & IW_T1X1I6_IMM6_UNSHIFTED_MASK) << IW_T1X1I6_IMM6_LSB)
+
+#define IW_T1X1I6_X_LSB 15
+#define IW_T1X1I6_X_SIZE 1
+#define IW_T1X1I6_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T1X1I6_X_SIZE))
+#define IW_T1X1I6_X_SHIFTED_MASK (IW_T1X1I6_X_UNSHIFTED_MASK << IW_T1X1I6_X_LSB)
+#define GET_IW_T1X1I6_X(W) (((W) >> IW_T1X1I6_X_LSB) & IW_T1X1I6_X_UNSHIFTED_MASK)
+#define SET_IW_T1X1I6_X(V) (((V) & IW_T1X1I6_X_UNSHIFTED_MASK) << IW_T1X1I6_X_LSB)
+
+#define IW_X1I7_IMM7_LSB 6
+#define IW_X1I7_IMM7_SIZE 7
+#define IW_X1I7_IMM7_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_X1I7_IMM7_SIZE))
+#define IW_X1I7_IMM7_SHIFTED_MASK (IW_X1I7_IMM7_UNSHIFTED_MASK << IW_X1I7_IMM7_LSB)
+#define GET_IW_X1I7_IMM7(W) (((W) >> IW_X1I7_IMM7_LSB) & IW_X1I7_IMM7_UNSHIFTED_MASK)
+#define SET_IW_X1I7_IMM7(V) (((V) & IW_X1I7_IMM7_UNSHIFTED_MASK) << IW_X1I7_IMM7_LSB)
+
+#define IW_X1I7_RSV_LSB 13
+#define IW_X1I7_RSV_SIZE 2
+#define IW_X1I7_RSV_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_X1I7_RSV_SIZE))
+#define IW_X1I7_RSV_SHIFTED_MASK (IW_X1I7_RSV_UNSHIFTED_MASK << IW_X1I7_RSV_LSB)
+#define GET_IW_X1I7_RSV(W) (((W) >> IW_X1I7_RSV_LSB) & IW_X1I7_RSV_UNSHIFTED_MASK)
+#define SET_IW_X1I7_RSV(V) (((V) & IW_X1I7_RSV_UNSHIFTED_MASK) << IW_X1I7_RSV_LSB)
+
+#define IW_X1I7_X_LSB 15
+#define IW_X1I7_X_SIZE 1
+#define IW_X1I7_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_X1I7_X_SIZE))
+#define IW_X1I7_X_SHIFTED_MASK (IW_X1I7_X_UNSHIFTED_MASK << IW_X1I7_X_LSB)
+#define GET_IW_X1I7_X(W) (((W) >> IW_X1I7_X_LSB) & IW_X1I7_X_UNSHIFTED_MASK)
+#define SET_IW_X1I7_X(V) (((V) & IW_X1I7_X_UNSHIFTED_MASK) << IW_X1I7_X_LSB)
+
+#define IW_L5I4X1_IMM4_LSB 6
+#define IW_L5I4X1_IMM4_SIZE 4
+#define IW_L5I4X1_IMM4_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L5I4X1_IMM4_SIZE))
+#define IW_L5I4X1_IMM4_SHIFTED_MASK (IW_L5I4X1_IMM4_UNSHIFTED_MASK << IW_L5I4X1_IMM4_LSB)
+#define GET_IW_L5I4X1_IMM4(W) (((W) >> IW_L5I4X1_IMM4_LSB) & IW_L5I4X1_IMM4_UNSHIFTED_MASK)
+#define SET_IW_L5I4X1_IMM4(V) (((V) & IW_L5I4X1_IMM4_UNSHIFTED_MASK) << IW_L5I4X1_IMM4_LSB)
+
+#define IW_L5I4X1_REGRANGE_LSB 10
+#define IW_L5I4X1_REGRANGE_SIZE 3
+#define IW_L5I4X1_REGRANGE_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L5I4X1_REGRANGE_SIZE))
+#define IW_L5I4X1_REGRANGE_SHIFTED_MASK (IW_L5I4X1_REGRANGE_UNSHIFTED_MASK << IW_L5I4X1_REGRANGE_LSB)
+#define GET_IW_L5I4X1_REGRANGE(W) (((W) >> IW_L5I4X1_REGRANGE_LSB) & IW_L5I4X1_REGRANGE_UNSHIFTED_MASK)
+#define SET_IW_L5I4X1_REGRANGE(V) (((V) & IW_L5I4X1_REGRANGE_UNSHIFTED_MASK) << IW_L5I4X1_REGRANGE_LSB)
+
+#define IW_L5I4X1_FP_LSB 13
+#define IW_L5I4X1_FP_SIZE 1
+#define IW_L5I4X1_FP_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L5I4X1_FP_SIZE))
+#define IW_L5I4X1_FP_SHIFTED_MASK (IW_L5I4X1_FP_UNSHIFTED_MASK << IW_L5I4X1_FP_LSB)
+#define GET_IW_L5I4X1_FP(W) (((W) >> IW_L5I4X1_FP_LSB) & IW_L5I4X1_FP_UNSHIFTED_MASK)
+#define SET_IW_L5I4X1_FP(V) (((V) & IW_L5I4X1_FP_UNSHIFTED_MASK) << IW_L5I4X1_FP_LSB)
+
+#define IW_L5I4X1_CS_LSB 14
+#define IW_L5I4X1_CS_SIZE 1
+#define IW_L5I4X1_CS_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L5I4X1_CS_SIZE))
+#define IW_L5I4X1_CS_SHIFTED_MASK (IW_L5I4X1_CS_UNSHIFTED_MASK << IW_L5I4X1_CS_LSB)
+#define GET_IW_L5I4X1_CS(W) (((W) >> IW_L5I4X1_CS_LSB) & IW_L5I4X1_CS_UNSHIFTED_MASK)
+#define SET_IW_L5I4X1_CS(V) (((V) & IW_L5I4X1_CS_UNSHIFTED_MASK) << IW_L5I4X1_CS_LSB)
+
+#define IW_L5I4X1_X_LSB 15
+#define IW_L5I4X1_X_SIZE 1
+#define IW_L5I4X1_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_L5I4X1_X_SIZE))
+#define IW_L5I4X1_X_SHIFTED_MASK (IW_L5I4X1_X_UNSHIFTED_MASK << IW_L5I4X1_X_LSB)
+#define GET_IW_L5I4X1_X(W) (((W) >> IW_L5I4X1_X_LSB) & IW_L5I4X1_X_UNSHIFTED_MASK)
+#define SET_IW_L5I4X1_X(V) (((V) & IW_L5I4X1_X_UNSHIFTED_MASK) << IW_L5I4X1_X_LSB)
+
+#define IW_T2X1L3_A3_LSB 6
+#define IW_T2X1L3_A3_SIZE 3
+#define IW_T2X1L3_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1L3_A3_SIZE))
+#define IW_T2X1L3_A3_SHIFTED_MASK (IW_T2X1L3_A3_UNSHIFTED_MASK << IW_T2X1L3_A3_LSB)
+#define GET_IW_T2X1L3_A3(W) (((W) >> IW_T2X1L3_A3_LSB) & IW_T2X1L3_A3_UNSHIFTED_MASK)
+#define SET_IW_T2X1L3_A3(V) (((V) & IW_T2X1L3_A3_UNSHIFTED_MASK) << IW_T2X1L3_A3_LSB)
+
+#define IW_T2X1L3_B3_LSB 9
+#define IW_T2X1L3_B3_SIZE 3
+#define IW_T2X1L3_B3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1L3_B3_SIZE))
+#define IW_T2X1L3_B3_SHIFTED_MASK (IW_T2X1L3_B3_UNSHIFTED_MASK << IW_T2X1L3_B3_LSB)
+#define GET_IW_T2X1L3_B3(W) (((W) >> IW_T2X1L3_B3_LSB) & IW_T2X1L3_B3_UNSHIFTED_MASK)
+#define SET_IW_T2X1L3_B3(V) (((V) & IW_T2X1L3_B3_UNSHIFTED_MASK) << IW_T2X1L3_B3_LSB)
+
+#define IW_T2X1L3_SHAMT_LSB 12
+#define IW_T2X1L3_SHAMT_SIZE 3
+#define IW_T2X1L3_SHAMT_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1L3_SHAMT_SIZE))
+#define IW_T2X1L3_SHAMT_SHIFTED_MASK (IW_T2X1L3_SHAMT_UNSHIFTED_MASK << IW_T2X1L3_SHAMT_LSB)
+#define GET_IW_T2X1L3_SHAMT(W) (((W) >> IW_T2X1L3_SHAMT_LSB) & IW_T2X1L3_SHAMT_UNSHIFTED_MASK)
+#define SET_IW_T2X1L3_SHAMT(V) (((V) & IW_T2X1L3_SHAMT_UNSHIFTED_MASK) << IW_T2X1L3_SHAMT_LSB)
+
+#define IW_T2X1L3_X_LSB 15
+#define IW_T2X1L3_X_SIZE 1
+#define IW_T2X1L3_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1L3_X_SIZE))
+#define IW_T2X1L3_X_SHIFTED_MASK (IW_T2X1L3_X_UNSHIFTED_MASK << IW_T2X1L3_X_LSB)
+#define GET_IW_T2X1L3_X(W) (((W) >> IW_T2X1L3_X_LSB) & IW_T2X1L3_X_UNSHIFTED_MASK)
+#define SET_IW_T2X1L3_X(V) (((V) & IW_T2X1L3_X_UNSHIFTED_MASK) << IW_T2X1L3_X_LSB)
+
+#define IW_T2X1I3_A3_LSB 6
+#define IW_T2X1I3_A3_SIZE 3
+#define IW_T2X1I3_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1I3_A3_SIZE))
+#define IW_T2X1I3_A3_SHIFTED_MASK (IW_T2X1I3_A3_UNSHIFTED_MASK << IW_T2X1I3_A3_LSB)
+#define GET_IW_T2X1I3_A3(W) (((W) >> IW_T2X1I3_A3_LSB) & IW_T2X1I3_A3_UNSHIFTED_MASK)
+#define SET_IW_T2X1I3_A3(V) (((V) & IW_T2X1I3_A3_UNSHIFTED_MASK) << IW_T2X1I3_A3_LSB)
+
+#define IW_T2X1I3_B3_LSB 9
+#define IW_T2X1I3_B3_SIZE 3
+#define IW_T2X1I3_B3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1I3_B3_SIZE))
+#define IW_T2X1I3_B3_SHIFTED_MASK (IW_T2X1I3_B3_UNSHIFTED_MASK << IW_T2X1I3_B3_LSB)
+#define GET_IW_T2X1I3_B3(W) (((W) >> IW_T2X1I3_B3_LSB) & IW_T2X1I3_B3_UNSHIFTED_MASK)
+#define SET_IW_T2X1I3_B3(V) (((V) & IW_T2X1I3_B3_UNSHIFTED_MASK) << IW_T2X1I3_B3_LSB)
+
+#define IW_T2X1I3_IMM3_LSB 12
+#define IW_T2X1I3_IMM3_SIZE 3
+#define IW_T2X1I3_IMM3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1I3_IMM3_SIZE))
+#define IW_T2X1I3_IMM3_SHIFTED_MASK (IW_T2X1I3_IMM3_UNSHIFTED_MASK << IW_T2X1I3_IMM3_LSB)
+#define GET_IW_T2X1I3_IMM3(W) (((W) >> IW_T2X1I3_IMM3_LSB) & IW_T2X1I3_IMM3_UNSHIFTED_MASK)
+#define SET_IW_T2X1I3_IMM3(V) (((V) & IW_T2X1I3_IMM3_UNSHIFTED_MASK) << IW_T2X1I3_IMM3_LSB)
+
+#define IW_T2X1I3_X_LSB 15
+#define IW_T2X1I3_X_SIZE 1
+#define IW_T2X1I3_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X1I3_X_SIZE))
+#define IW_T2X1I3_X_SHIFTED_MASK (IW_T2X1I3_X_UNSHIFTED_MASK << IW_T2X1I3_X_LSB)
+#define GET_IW_T2X1I3_X(W) (((W) >> IW_T2X1I3_X_LSB) & IW_T2X1I3_X_UNSHIFTED_MASK)
+#define SET_IW_T2X1I3_X(V) (((V) & IW_T2X1I3_X_UNSHIFTED_MASK) << IW_T2X1I3_X_LSB)
+
+#define IW_T3X1_A3_LSB 6
+#define IW_T3X1_A3_SIZE 3
+#define IW_T3X1_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T3X1_A3_SIZE))
+#define IW_T3X1_A3_SHIFTED_MASK (IW_T3X1_A3_UNSHIFTED_MASK << IW_T3X1_A3_LSB)
+#define GET_IW_T3X1_A3(W) (((W) >> IW_T3X1_A3_LSB) & IW_T3X1_A3_UNSHIFTED_MASK)
+#define SET_IW_T3X1_A3(V) (((V) & IW_T3X1_A3_UNSHIFTED_MASK) << IW_T3X1_A3_LSB)
+
+#define IW_T3X1_B3_LSB 9
+#define IW_T3X1_B3_SIZE 3
+#define IW_T3X1_B3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T3X1_B3_SIZE))
+#define IW_T3X1_B3_SHIFTED_MASK (IW_T3X1_B3_UNSHIFTED_MASK << IW_T3X1_B3_LSB)
+#define GET_IW_T3X1_B3(W) (((W) >> IW_T3X1_B3_LSB) & IW_T3X1_B3_UNSHIFTED_MASK)
+#define SET_IW_T3X1_B3(V) (((V) & IW_T3X1_B3_UNSHIFTED_MASK) << IW_T3X1_B3_LSB)
+
+#define IW_T3X1_C3_LSB 12
+#define IW_T3X1_C3_SIZE 3
+#define IW_T3X1_C3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T3X1_C3_SIZE))
+#define IW_T3X1_C3_SHIFTED_MASK (IW_T3X1_C3_UNSHIFTED_MASK << IW_T3X1_C3_LSB)
+#define GET_IW_T3X1_C3(W) (((W) >> IW_T3X1_C3_LSB) & IW_T3X1_C3_UNSHIFTED_MASK)
+#define SET_IW_T3X1_C3(V) (((V) & IW_T3X1_C3_UNSHIFTED_MASK) << IW_T3X1_C3_LSB)
+
+#define IW_T3X1_X_LSB 15
+#define IW_T3X1_X_SIZE 1
+#define IW_T3X1_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T3X1_X_SIZE))
+#define IW_T3X1_X_SHIFTED_MASK (IW_T3X1_X_UNSHIFTED_MASK << IW_T3X1_X_LSB)
+#define GET_IW_T3X1_X(W) (((W) >> IW_T3X1_X_LSB) & IW_T3X1_X_UNSHIFTED_MASK)
+#define SET_IW_T3X1_X(V) (((V) & IW_T3X1_X_UNSHIFTED_MASK) << IW_T3X1_X_LSB)
+
+/* The X field for all three R.N-class instruction formats is represented
+   here as 4 bits, including the bits defined as constant 0 or 1 that
+   determine which of the formats T2X3, F1X1, or X2L5 it is.  */
+#define IW_R_N_X_LSB 12
+#define IW_R_N_X_SIZE 4
+#define IW_R_N_X_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_R_N_X_SIZE))
+#define IW_R_N_X_SHIFTED_MASK (IW_R_N_X_UNSHIFTED_MASK << IW_R_N_X_LSB)
+#define GET_IW_R_N_X(W) (((W) >> IW_R_N_X_LSB) & IW_R_N_X_UNSHIFTED_MASK)
+#define SET_IW_R_N_X(V) (((V) & IW_R_N_X_UNSHIFTED_MASK) << IW_R_N_X_LSB)
+
+#define IW_T2X3_A3_LSB 6
+#define IW_T2X3_A3_SIZE 3
+#define IW_T2X3_A3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X3_A3_SIZE))
+#define IW_T2X3_A3_SHIFTED_MASK (IW_T2X3_A3_UNSHIFTED_MASK << IW_T2X3_A3_LSB)
+#define GET_IW_T2X3_A3(W) (((W) >> IW_T2X3_A3_LSB) & IW_T2X3_A3_UNSHIFTED_MASK)
+#define SET_IW_T2X3_A3(V) (((V) & IW_T2X3_A3_UNSHIFTED_MASK) << IW_T2X3_A3_LSB)
+
+#define IW_T2X3_B3_LSB 9
+#define IW_T2X3_B3_SIZE 3
+#define IW_T2X3_B3_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_T2X3_B3_SIZE))
+#define IW_T2X3_B3_SHIFTED_MASK (IW_T2X3_B3_UNSHIFTED_MASK << IW_T2X3_B3_LSB)
+#define GET_IW_T2X3_B3(W) (((W) >> IW_T2X3_B3_LSB) & IW_T2X3_B3_UNSHIFTED_MASK)
+#define SET_IW_T2X3_B3(V) (((V) & IW_T2X3_B3_UNSHIFTED_MASK) << IW_T2X3_B3_LSB)
+
+#define IW_F1X1_A_LSB 6
+#define IW_F1X1_A_SIZE 5
+#define IW_F1X1_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X1_A_SIZE))
+#define IW_F1X1_A_SHIFTED_MASK (IW_F1X1_A_UNSHIFTED_MASK << IW_F1X1_A_LSB)
+#define GET_IW_F1X1_A(W) (((W) >> IW_F1X1_A_LSB) & IW_F1X1_A_UNSHIFTED_MASK)
+#define SET_IW_F1X1_A(V) (((V) & IW_F1X1_A_UNSHIFTED_MASK) << IW_F1X1_A_LSB)
+
+#define IW_F1X1_RSV_LSB 11
+#define IW_F1X1_RSV_SIZE 1
+#define IW_F1X1_RSV_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1X1_RSV_SIZE))
+#define IW_F1X1_RSV_SHIFTED_MASK (IW_F1X1_RSV_UNSHIFTED_MASK << IW_F1X1_RSV_LSB)
+#define GET_IW_F1X1_RSV(W) (((W) >> IW_F1X1_RSV_LSB) & IW_F1X1_RSV_UNSHIFTED_MASK)
+#define SET_IW_F1X1_RSV(V) (((V) & IW_F1X1_RSV_UNSHIFTED_MASK) << IW_F1X1_RSV_LSB)
+
+#define IW_X2L5_IMM5_LSB 6
+#define IW_X2L5_IMM5_SIZE 5
+#define IW_X2L5_IMM5_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_X2L5_IMM5_SIZE))
+#define IW_X2L5_IMM5_SHIFTED_MASK (IW_X2L5_IMM5_UNSHIFTED_MASK << IW_X2L5_IMM5_LSB)
+#define GET_IW_X2L5_IMM5(W) (((W) >> IW_X2L5_IMM5_LSB) & IW_X2L5_IMM5_UNSHIFTED_MASK)
+#define SET_IW_X2L5_IMM5(V) (((V) & IW_X2L5_IMM5_UNSHIFTED_MASK) << IW_X2L5_IMM5_LSB)
+
+#define IW_X2L5_RSV_LSB 11
+#define IW_X2L5_RSV_SIZE 1
+#define IW_X2L5_RSV_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_X2L5_RSV_SIZE))
+#define IW_X2L5_RSV_SHIFTED_MASK (IW_X2L5_RSV_UNSHIFTED_MASK << IW_X2L5_RSV_LSB)
+#define GET_IW_X2L5_RSV(W) (((W) >> IW_X2L5_RSV_LSB) & IW_X2L5_RSV_UNSHIFTED_MASK)
+#define SET_IW_X2L5_RSV(V) (((V) & IW_X2L5_RSV_UNSHIFTED_MASK) << IW_X2L5_RSV_LSB)
+
+#define IW_F1I5_IMM5_LSB 6
+#define IW_F1I5_IMM5_SIZE 5
+#define IW_F1I5_IMM5_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1I5_IMM5_SIZE))
+#define IW_F1I5_IMM5_SHIFTED_MASK (IW_F1I5_IMM5_UNSHIFTED_MASK << IW_F1I5_IMM5_LSB)
+#define GET_IW_F1I5_IMM5(W) (((W) >> IW_F1I5_IMM5_LSB) & IW_F1I5_IMM5_UNSHIFTED_MASK)
+#define SET_IW_F1I5_IMM5(V) (((V) & IW_F1I5_IMM5_UNSHIFTED_MASK) << IW_F1I5_IMM5_LSB)
+
+#define IW_F1I5_B_LSB 11
+#define IW_F1I5_B_SIZE 5
+#define IW_F1I5_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F1I5_B_SIZE))
+#define IW_F1I5_B_SHIFTED_MASK (IW_F1I5_B_UNSHIFTED_MASK << IW_F1I5_B_LSB)
+#define GET_IW_F1I5_B(W) (((W) >> IW_F1I5_B_LSB) & IW_F1I5_B_UNSHIFTED_MASK)
+#define SET_IW_F1I5_B(V) (((V) & IW_F1I5_B_UNSHIFTED_MASK) << IW_F1I5_B_LSB)
+
+#define IW_F2_A_LSB 6
+#define IW_F2_A_SIZE 5
+#define IW_F2_A_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2_A_SIZE))
+#define IW_F2_A_SHIFTED_MASK (IW_F2_A_UNSHIFTED_MASK << IW_F2_A_LSB)
+#define GET_IW_F2_A(W) (((W) >> IW_F2_A_LSB) & IW_F2_A_UNSHIFTED_MASK)
+#define SET_IW_F2_A(V) (((V) & IW_F2_A_UNSHIFTED_MASK) << IW_F2_A_LSB)
+
+#define IW_F2_B_LSB 11
+#define IW_F2_B_SIZE 5
+#define IW_F2_B_UNSHIFTED_MASK (0xffffffffu >> (32 - IW_F2_B_SIZE))
+#define IW_F2_B_SHIFTED_MASK (IW_F2_B_UNSHIFTED_MASK << IW_F2_B_LSB)
+#define GET_IW_F2_B(W) (((W) >> IW_F2_B_LSB) & IW_F2_B_UNSHIFTED_MASK)
+#define SET_IW_F2_B(V) (((V) & IW_F2_B_UNSHIFTED_MASK) << IW_F2_B_LSB)
+
+/* R2 opcodes.  */
+#define R2_OP_CALL 0
+#define R2_OP_AS_N 1
+#define R2_OP_BR 2
+#define R2_OP_BR_N 3
+#define R2_OP_ADDI 4
+#define R2_OP_LDBU_N 5
+#define R2_OP_LDBU 6
+#define R2_OP_LDB 7
+#define R2_OP_JMPI 8
+#define R2_OP_R_N 9
+#define R2_OP_ANDI_N 11
+#define R2_OP_ANDI 12
+#define R2_OP_LDHU_N 13
+#define R2_OP_LDHU 14
+#define R2_OP_LDH 15
+#define R2_OP_ASI_N 17
+#define R2_OP_BGE 18
+#define R2_OP_LDWSP_N 19
+#define R2_OP_ORI 20
+#define R2_OP_LDW_N 21
+#define R2_OP_CMPGEI 22
+#define R2_OP_LDW 23
+#define R2_OP_SHI_N 25
+#define R2_OP_BLT 26
+#define R2_OP_MOVI_N 27
+#define R2_OP_XORI 28
+#define R2_OP_STZ_N 29
+#define R2_OP_CMPLTI 30
+#define R2_OP_ANDCI 31
+#define R2_OP_OPX 32
+#define R2_OP_PP_N 33
+#define R2_OP_BNE 34
+#define R2_OP_BNEZ_N 35
+#define R2_OP_MULI 36
+#define R2_OP_STB_N 37
+#define R2_OP_CMPNEI 38
+#define R2_OP_STB 39
+#define R2_OP_I12 40
+#define R2_OP_SPI_N 41
+#define R2_OP_BEQ 42
+#define R2_OP_BEQZ_N 43
+#define R2_OP_ANDHI 44
+#define R2_OP_STH_N 45
+#define R2_OP_CMPEQI 46
+#define R2_OP_STH 47
+#define R2_OP_CUSTOM 48
+#define R2_OP_BGEU 50
+#define R2_OP_STWSP_N 51
+#define R2_OP_ORHI 52
+#define R2_OP_STW_N 53
+#define R2_OP_CMPGEUI 54
+#define R2_OP_STW 55
+#define R2_OP_BLTU 58
+#define R2_OP_MOV_N 59
+#define R2_OP_XORHI 60
+#define R2_OP_SPADDI_N 61
+#define R2_OP_CMPLTUI 62
+#define R2_OP_ANDCHI 63
+
+#define R2_OPX_WRPIE 0
+#define R2_OPX_ERET 1
+#define R2_OPX_ROLI 2
+#define R2_OPX_ROL 3
+#define R2_OPX_FLUSHP 4
+#define R2_OPX_RET 5
+#define R2_OPX_NOR 6
+#define R2_OPX_MULXUU 7
+#define R2_OPX_ENI 8
+#define R2_OPX_BRET 9
+#define R2_OPX_ROR 11
+#define R2_OPX_FLUSHI 12
+#define R2_OPX_JMP 13
+#define R2_OPX_AND 14
+#define R2_OPX_CMPGE 16
+#define R2_OPX_SLLI 18
+#define R2_OPX_SLL 19
+#define R2_OPX_WRPRS 20
+#define R2_OPX_OR 22
+#define R2_OPX_MULXSU 23
+#define R2_OPX_CMPLT 24
+#define R2_OPX_SRLI 26
+#define R2_OPX_SRL 27
+#define R2_OPX_NEXTPC 28
+#define R2_OPX_CALLR 29
+#define R2_OPX_XOR 30
+#define R2_OPX_MULXSS 31
+#define R2_OPX_CMPNE 32
+#define R2_OPX_INSERT 35
+#define R2_OPX_DIVU 36
+#define R2_OPX_DIV 37
+#define R2_OPX_RDCTL 38
+#define R2_OPX_MUL 39
+#define R2_OPX_CMPEQ 40
+#define R2_OPX_INITI 41
+#define R2_OPX_MERGE 43
+#define R2_OPX_HBREAK 44
+#define R2_OPX_TRAP 45
+#define R2_OPX_WRCTL 46
+#define R2_OPX_CMPGEU 48
+#define R2_OPX_ADD 49
+#define R2_OPX_EXTRACT 51
+#define R2_OPX_BREAK 52
+#define R2_OPX_LDEX 53
+#define R2_OPX_SYNC 54
+#define R2_OPX_LDSEX 55
+#define R2_OPX_CMPLTU 56
+#define R2_OPX_SUB 57
+#define R2_OPX_SRAI 58
+#define R2_OPX_SRA 59
+#define R2_OPX_STEX 61
+#define R2_OPX_STSEX 63
+
+#define R2_I12_LDBIO 0
+#define R2_I12_STBIO 1
+#define R2_I12_LDBUIO 2
+#define R2_I12_DCACHE 3
+#define R2_I12_LDHIO 4
+#define R2_I12_STHIO 5
+#define R2_I12_LDHUIO 6
+#define R2_I12_RDPRS 7
+#define R2_I12_LDWIO 8
+#define R2_I12_STWIO 9
+#define R2_I12_LDWM 12
+#define R2_I12_STWM 13
+
+#define R2_DCACHE_INITD 0
+#define R2_DCACHE_INITDA 1
+#define R2_DCACHE_FLUSHD 2
+#define R2_DCACHE_FLUSHDA 3
+
+#define R2_AS_N_ADD_N 0
+#define R2_AS_N_SUB_N 1
+
+#define R2_R_N_AND_N 0
+#define R2_R_N_OR_N 2
+#define R2_R_N_XOR_N 3
+#define R2_R_N_SLL_N 4
+#define R2_R_N_SRL_N 5
+#define R2_R_N_NOT_N 6
+#define R2_R_N_NEG_N 7
+#define R2_R_N_CALLR_N 8
+#define R2_R_N_JMPR_N 10
+#define R2_R_N_BREAK_N 12
+#define R2_R_N_TRAP_N 13
+#define R2_R_N_RET_N 14
+
+#define R2_SPI_N_SPINCI_N 0
+#define R2_SPI_N_SPDECI_N 1
+
+#define R2_ASI_N_ADDI_N 0
+#define R2_ASI_N_SUBI_N 1
+
+#define R2_SHI_N_SLLI_N 0
+#define R2_SHI_N_SRLI_N 1
+
+#define R2_PP_N_POP_N 0
+#define R2_PP_N_PUSH_N 1
+
+#define R2_STZ_N_STWZ_N 0
+#define R2_STZ_N_STBZ_N 1
+
+/* Convenience macros for R2 encodings. */
+
+#define MATCH_R2_OP(NAME) \
+  (SET_IW_R2_OP (R2_OP_##NAME))
+#define MASK_R2_OP \
+  IW_R2_OP_SHIFTED_MASK
+
+#define MATCH_R2_OPX0(NAME) \
+  (SET_IW_R2_OP (R2_OP_OPX) | SET_IW_OPX_X (R2_OPX_##NAME))
+#define MASK_R2_OPX0 \
+  (IW_R2_OP_SHIFTED_MASK | IW_OPX_X_SHIFTED_MASK \
+   | IW_F3X6L5_IMM5_SHIFTED_MASK)
+
+#define MATCH_R2_OPX(NAME, A, B, C)				\
+  (MATCH_R2_OPX0 (NAME) | SET_IW_F3X6L5_A (A) | SET_IW_F3X6L5_B (B) \
+   | SET_IW_F3X6L5_C (C))
+#define MASK_R2_OPX(A, B, C, N)				\
+  (IW_R2_OP_SHIFTED_MASK | IW_OPX_X_SHIFTED_MASK	\
+   | (A ? IW_F3X6L5_A_SHIFTED_MASK : 0)			\
+   | (B ? IW_F3X6L5_B_SHIFTED_MASK : 0)			\
+   | (C ? IW_F3X6L5_C_SHIFTED_MASK : 0)			\
+   | (N ? IW_F3X6L5_IMM5_SHIFTED_MASK : 0))
+
+#define MATCH_R2_I12(NAME) \
+  (SET_IW_R2_OP (R2_OP_I12) | SET_IW_I12_X (R2_I12_##NAME))
+#define MASK_R2_I12 \
+  (IW_R2_OP_SHIFTED_MASK | IW_I12_X_SHIFTED_MASK )
+
+#define MATCH_R2_DCACHE(NAME) \
+  (MATCH_R2_I12(DCACHE) | SET_IW_F1X4I12_X (R2_DCACHE_##NAME))
+#define MASK_R2_DCACHE \
+  (MASK_R2_I12 | IW_F1X4I12_X_SHIFTED_MASK)
+
+#define MATCH_R2_R_N(NAME) \
+  (SET_IW_R2_OP (R2_OP_R_N) | SET_IW_R_N_X (R2_R_N_##NAME))
+#define MASK_R2_R_N \
+  (IW_R2_OP_SHIFTED_MASK | IW_R_N_X_SHIFTED_MASK )
+
+/* Match/mask macros for R2 instructions.  */
+
+#define MATCH_R2_ADD	MATCH_R2_OPX0 (ADD)
+#define MASK_R2_ADD	MASK_R2_OPX0
+#define MATCH_R2_ADDI	MATCH_R2_OP (ADDI)
+#define MASK_R2_ADDI	MASK_R2_OP
+#define MATCH_R2_ADD_N	(MATCH_R2_OP (AS_N) | SET_IW_T3X1_X (R2_AS_N_ADD_N))
+#define MASK_R2_ADD_N	(MASK_R2_OP | IW_T3X1_X_SHIFTED_MASK)
+#define MATCH_R2_ADDI_N	(MATCH_R2_OP (ASI_N) | SET_IW_T2X1I3_X (R2_ASI_N_ADDI_N))
+#define MASK_R2_ADDI_N	(MASK_R2_OP | IW_T2X1I3_X_SHIFTED_MASK)
+#define MATCH_R2_AND	MATCH_R2_OPX0 (AND)
+#define MASK_R2_AND	MASK_R2_OPX0
+#define MATCH_R2_ANDCHI	MATCH_R2_OP (ANDCHI)
+#define MASK_R2_ANDCHI	MASK_R2_OP
+#define MATCH_R2_ANDCI	MATCH_R2_OP (ANDCI)
+#define MASK_R2_ANDCI	MASK_R2_OP
+#define MATCH_R2_ANDHI	MATCH_R2_OP (ANDHI)
+#define MASK_R2_ANDHI	MASK_R2_OP
+#define MATCH_R2_ANDI	MATCH_R2_OP (ANDI)
+#define MASK_R2_ANDI	MASK_R2_OP
+#define MATCH_R2_ANDI_N	MATCH_R2_OP (ANDI_N)
+#define MASK_R2_ANDI_N	MASK_R2_OP
+#define MATCH_R2_AND_N	MATCH_R2_R_N (AND_N)
+#define MASK_R2_AND_N	MASK_R2_R_N
+#define MATCH_R2_BEQ	MATCH_R2_OP (BEQ)
+#define MASK_R2_BEQ	MASK_R2_OP
+#define MATCH_R2_BEQZ_N	MATCH_R2_OP (BEQZ_N)
+#define MASK_R2_BEQZ_N	MASK_R2_OP
+#define MATCH_R2_BGE	MATCH_R2_OP (BGE)
+#define MASK_R2_BGE	MASK_R2_OP
+#define MATCH_R2_BGEU	MATCH_R2_OP (BGEU)
+#define MASK_R2_BGEU	MASK_R2_OP
+#define MATCH_R2_BGT	MATCH_R2_OP (BLT)
+#define MASK_R2_BGT	MASK_R2_OP
+#define MATCH_R2_BGTU	MATCH_R2_OP (BLTU)
+#define MASK_R2_BGTU	MASK_R2_OP
+#define MATCH_R2_BLE	MATCH_R2_OP (BGE)
+#define MASK_R2_BLE	MASK_R2_OP
+#define MATCH_R2_BLEU	MATCH_R2_OP (BGEU)
+#define MASK_R2_BLEU	MASK_R2_OP
+#define MATCH_R2_BLT	MATCH_R2_OP (BLT)
+#define MASK_R2_BLT	MASK_R2_OP
+#define MATCH_R2_BLTU	MATCH_R2_OP (BLTU)
+#define MASK_R2_BLTU	MASK_R2_OP
+#define MATCH_R2_BNE	MATCH_R2_OP (BNE)
+#define MASK_R2_BNE	MASK_R2_OP
+#define MATCH_R2_BNEZ_N	MATCH_R2_OP (BNEZ_N)
+#define MASK_R2_BNEZ_N	MASK_R2_OP
+#define MATCH_R2_BR	MATCH_R2_OP (BR)
+#define MASK_R2_BR	MASK_R2_OP | IW_F2I16_A_SHIFTED_MASK | IW_F2I16_B_SHIFTED_MASK
+#define MATCH_R2_BREAK	MATCH_R2_OPX (BREAK, 0, 0, 0x1e)
+#define MASK_R2_BREAK	MASK_R2_OPX (1, 1, 1, 0)
+#define MATCH_R2_BREAK_N	MATCH_R2_R_N (BREAK_N)
+#define MASK_R2_BREAK_N	MASK_R2_R_N
+#define MATCH_R2_BRET	MATCH_R2_OPX (BRET, 0x1e, 0, 0)
+#define MASK_R2_BRET	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_BR_N	MATCH_R2_OP (BR_N)
+#define MASK_R2_BR_N	MASK_R2_OP
+#define MATCH_R2_CALL	MATCH_R2_OP (CALL)
+#define MASK_R2_CALL	MASK_R2_OP
+#define MATCH_R2_CALLR	MATCH_R2_OPX (CALLR, 0, 0, 0x1f)
+#define MASK_R2_CALLR	MASK_R2_OPX (0, 1, 1, 1)
+#define MATCH_R2_CALLR_N	MATCH_R2_R_N (CALLR_N)
+#define MASK_R2_CALLR_N	MASK_R2_R_N
+#define MATCH_R2_CMPEQ	MATCH_R2_OPX0 (CMPEQ)
+#define MASK_R2_CMPEQ	MASK_R2_OPX0
+#define MATCH_R2_CMPEQI	MATCH_R2_OP (CMPEQI)
+#define MASK_R2_CMPEQI	MASK_R2_OP
+#define MATCH_R2_CMPGE	MATCH_R2_OPX0 (CMPGE)
+#define MASK_R2_CMPGE	MASK_R2_OPX0
+#define MATCH_R2_CMPGEI	MATCH_R2_OP (CMPGEI)
+#define MASK_R2_CMPGEI	MASK_R2_OP
+#define MATCH_R2_CMPGEU	MATCH_R2_OPX0 (CMPGEU)
+#define MASK_R2_CMPGEU	MASK_R2_OPX0
+#define MATCH_R2_CMPGEUI	MATCH_R2_OP (CMPGEUI)
+#define MASK_R2_CMPGEUI	MASK_R2_OP
+#define MATCH_R2_CMPGT	MATCH_R2_OPX0 (CMPLT)
+#define MASK_R2_CMPGT	MASK_R2_OPX0
+#define MATCH_R2_CMPGTI	MATCH_R2_OP (CMPGEI)
+#define MASK_R2_CMPGTI	MASK_R2_OP
+#define MATCH_R2_CMPGTU	MATCH_R2_OPX0 (CMPLTU)
+#define MASK_R2_CMPGTU	MASK_R2_OPX0
+#define MATCH_R2_CMPGTUI	MATCH_R2_OP (CMPGEUI)
+#define MASK_R2_CMPGTUI	MASK_R2_OP
+#define MATCH_R2_CMPLE	MATCH_R2_OPX0 (CMPGE)
+#define MASK_R2_CMPLE	MASK_R2_OPX0
+#define MATCH_R2_CMPLEI	MATCH_R2_OP (CMPLTI)
+#define MASK_R2_CMPLEI	MASK_R2_OP
+#define MATCH_R2_CMPLEU	MATCH_R2_OPX0 (CMPGEU)
+#define MASK_R2_CMPLEU	MASK_R2_OPX0
+#define MATCH_R2_CMPLEUI	MATCH_R2_OP (CMPLTUI)
+#define MASK_R2_CMPLEUI	MASK_R2_OP
+#define MATCH_R2_CMPLT	MATCH_R2_OPX0 (CMPLT)
+#define MASK_R2_CMPLT	MASK_R2_OPX0
+#define MATCH_R2_CMPLTI	MATCH_R2_OP (CMPLTI)
+#define MASK_R2_CMPLTI	MASK_R2_OP
+#define MATCH_R2_CMPLTU	MATCH_R2_OPX0 (CMPLTU)
+#define MASK_R2_CMPLTU	MASK_R2_OPX0
+#define MATCH_R2_CMPLTUI	MATCH_R2_OP (CMPLTUI)
+#define MASK_R2_CMPLTUI	MASK_R2_OP
+#define MATCH_R2_CMPNE	MATCH_R2_OPX0 (CMPNE)
+#define MASK_R2_CMPNE	MASK_R2_OPX0
+#define MATCH_R2_CMPNEI	MATCH_R2_OP (CMPNEI)
+#define MASK_R2_CMPNEI	MASK_R2_OP
+#define MATCH_R2_CUSTOM	MATCH_R2_OP (CUSTOM)
+#define MASK_R2_CUSTOM	MASK_R2_OP
+#define MATCH_R2_DIV	MATCH_R2_OPX0 (DIV)
+#define MASK_R2_DIV	MASK_R2_OPX0
+#define MATCH_R2_DIVU	MATCH_R2_OPX0 (DIVU)
+#define MASK_R2_DIVU	MASK_R2_OPX0
+#define MATCH_R2_ENI	MATCH_R2_OPX (ENI, 0, 0, 0)
+#define MASK_R2_ENI	MASK_R2_OPX (1, 1, 1, 0)
+#define MATCH_R2_ERET	MATCH_R2_OPX (ERET, 0x1d, 0x1e, 0)
+#define MASK_R2_ERET	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_EXTRACT	MATCH_R2_OPX (EXTRACT, 0, 0, 0)
+#define MASK_R2_EXTRACT	MASK_R2_OPX (0, 0, 0, 0)
+#define MATCH_R2_FLUSHD	MATCH_R2_DCACHE (FLUSHD)
+#define MASK_R2_FLUSHD	MASK_R2_DCACHE
+#define MATCH_R2_FLUSHDA	MATCH_R2_DCACHE (FLUSHDA)
+#define MASK_R2_FLUSHDA	MASK_R2_DCACHE
+#define MATCH_R2_FLUSHI	MATCH_R2_OPX (FLUSHI, 0, 0, 0)
+#define MASK_R2_FLUSHI	MASK_R2_OPX (0, 1, 1, 1)
+#define MATCH_R2_FLUSHP	MATCH_R2_OPX (FLUSHP, 0, 0, 0)
+#define MASK_R2_FLUSHP	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_INITD	MATCH_R2_DCACHE (INITD)
+#define MASK_R2_INITD	MASK_R2_DCACHE
+#define MATCH_R2_INITDA	MATCH_R2_DCACHE (INITDA)
+#define MASK_R2_INITDA	MASK_R2_DCACHE
+#define MATCH_R2_INITI	MATCH_R2_OPX (INITI, 0, 0, 0)
+#define MASK_R2_INITI	MASK_R2_OPX (0, 1, 1, 1)
+#define MATCH_R2_INSERT	MATCH_R2_OPX (INSERT, 0, 0, 0)
+#define MASK_R2_INSERT	MASK_R2_OPX (0, 0, 0, 0)
+#define MATCH_R2_JMP	MATCH_R2_OPX (JMP, 0, 0, 0)
+#define MASK_R2_JMP	MASK_R2_OPX (0, 1, 1, 1)
+#define MATCH_R2_JMPI	MATCH_R2_OP (JMPI)
+#define MASK_R2_JMPI	MASK_R2_OP
+#define MATCH_R2_JMPR_N	MATCH_R2_R_N (JMPR_N)
+#define MASK_R2_JMPR_N	MASK_R2_R_N
+#define MATCH_R2_LDB	MATCH_R2_OP (LDB)
+#define MASK_R2_LDB	MASK_R2_OP
+#define MATCH_R2_LDBIO	MATCH_R2_I12 (LDBIO)
+#define MASK_R2_LDBIO	MASK_R2_I12
+#define MATCH_R2_LDBU	MATCH_R2_OP (LDBU)
+#define MASK_R2_LDBU	MASK_R2_OP
+#define MATCH_R2_LDBUIO	MATCH_R2_I12 (LDBUIO)
+#define MASK_R2_LDBUIO	MASK_R2_I12
+#define MATCH_R2_LDBU_N	MATCH_R2_OP (LDBU_N)
+#define MASK_R2_LDBU_N	MASK_R2_OP
+#define MATCH_R2_LDEX	MATCH_R2_OPX (LDEX, 0, 0, 0)
+#define MASK_R2_LDEX	MASK_R2_OPX (0, 1, 0, 1)
+#define MATCH_R2_LDH	MATCH_R2_OP (LDH)
+#define MASK_R2_LDH	MASK_R2_OP
+#define MATCH_R2_LDHIO	MATCH_R2_I12 (LDHIO)
+#define MASK_R2_LDHIO	MASK_R2_I12
+#define MATCH_R2_LDHU	MATCH_R2_OP (LDHU)
+#define MASK_R2_LDHU	MASK_R2_OP
+#define MATCH_R2_LDHUIO	MATCH_R2_I12 (LDHUIO)
+#define MASK_R2_LDHUIO	MASK_R2_I12
+#define MATCH_R2_LDHU_N	MATCH_R2_OP (LDHU_N)
+#define MASK_R2_LDHU_N	MASK_R2_OP
+#define MATCH_R2_LDSEX	MATCH_R2_OPX (LDSEX, 0, 0, 0)
+#define MASK_R2_LDSEX	MASK_R2_OPX (0, 1, 0, 1)
+#define MATCH_R2_LDW	MATCH_R2_OP (LDW)
+#define MASK_R2_LDW	MASK_R2_OP
+#define MATCH_R2_LDWIO	MATCH_R2_I12 (LDWIO)
+#define MASK_R2_LDWIO	MASK_R2_I12
+#define MATCH_R2_LDWM	MATCH_R2_I12 (LDWM)
+#define MASK_R2_LDWM	MASK_R2_I12
+#define MATCH_R2_LDWSP_N	MATCH_R2_OP (LDWSP_N)
+#define MASK_R2_LDWSP_N	MASK_R2_OP
+#define MATCH_R2_LDW_N	MATCH_R2_OP (LDW_N)
+#define MASK_R2_LDW_N	MASK_R2_OP
+#define MATCH_R2_MERGE	MATCH_R2_OPX (MERGE, 0, 0, 0)
+#define MASK_R2_MERGE	MASK_R2_OPX (0, 0, 0, 0)
+#define MATCH_R2_MOV	MATCH_R2_OPX (ADD, 0, 0, 0)
+#define MASK_R2_MOV	MASK_R2_OPX (0, 1, 0, 1)
+#define MATCH_R2_MOVHI	MATCH_R2_OP (ORHI) | SET_IW_F2I16_A (0)
+#define MASK_R2_MOVHI	MASK_R2_OP | IW_F2I16_A_SHIFTED_MASK
+#define MATCH_R2_MOVI	MATCH_R2_OP (ADDI) | SET_IW_F2I16_A (0)
+#define MASK_R2_MOVI	MASK_R2_OP | IW_F2I16_A_SHIFTED_MASK
+#define MATCH_R2_MOVUI	MATCH_R2_OP (ORI) | SET_IW_F2I16_A (0)
+#define MASK_R2_MOVUI	MASK_R2_OP | IW_F2I16_A_SHIFTED_MASK
+#define MATCH_R2_MOV_N	MATCH_R2_OP (MOV_N)
+#define MASK_R2_MOV_N	MASK_R2_OP
+#define MATCH_R2_MOVI_N	MATCH_R2_OP (MOVI_N)
+#define MASK_R2_MOVI_N	MASK_R2_OP
+#define MATCH_R2_MUL	MATCH_R2_OPX0 (MUL)
+#define MASK_R2_MUL	MASK_R2_OPX0
+#define MATCH_R2_MULI	MATCH_R2_OP (MULI)
+#define MASK_R2_MULI	MASK_R2_OP
+#define MATCH_R2_MULXSS	MATCH_R2_OPX0 (MULXSS)
+#define MASK_R2_MULXSS	MASK_R2_OPX0
+#define MATCH_R2_MULXSU	MATCH_R2_OPX0 (MULXSU)
+#define MASK_R2_MULXSU	MASK_R2_OPX0
+#define MATCH_R2_MULXUU	MATCH_R2_OPX0 (MULXUU)
+#define MASK_R2_MULXUU	MASK_R2_OPX0
+#define MATCH_R2_NEG_N	MATCH_R2_R_N (NEG_N)
+#define MASK_R2_NEG_N	MASK_R2_R_N
+#define MATCH_R2_NEXTPC	MATCH_R2_OPX (NEXTPC, 0, 0, 0)
+#define MASK_R2_NEXTPC	MASK_R2_OPX (1, 1, 0, 1)
+#define MATCH_R2_NOP	MATCH_R2_OPX (ADD, 0, 0, 0)
+#define MASK_R2_NOP	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_NOP_N	(MATCH_R2_OP (MOV_N) | SET_IW_F2_A (0) | SET_IW_F2_B (0))
+#define MASK_R2_NOP_N	(MASK_R2_OP | IW_F2_A_SHIFTED_MASK | IW_F2_B_SHIFTED_MASK)
+#define MATCH_R2_NOR	MATCH_R2_OPX0 (NOR)
+#define MASK_R2_NOR	MASK_R2_OPX0
+#define MATCH_R2_NOT_N	MATCH_R2_R_N (NOT_N)
+#define MASK_R2_NOT_N	MASK_R2_R_N
+#define MATCH_R2_OR	MATCH_R2_OPX0 (OR)
+#define MASK_R2_OR	MASK_R2_OPX0
+#define MATCH_R2_OR_N	MATCH_R2_R_N (OR_N)
+#define MASK_R2_OR_N	MASK_R2_R_N
+#define MATCH_R2_ORHI	MATCH_R2_OP (ORHI)
+#define MASK_R2_ORHI	MASK_R2_OP
+#define MATCH_R2_ORI	MATCH_R2_OP (ORI)
+#define MASK_R2_ORI	MASK_R2_OP
+#define MATCH_R2_POP_N	(MATCH_R2_OP (PP_N) | SET_IW_L5I4X1_X (R2_PP_N_POP_N))
+#define MASK_R2_POP_N	(MASK_R2_OP | IW_L5I4X1_X_SHIFTED_MASK)
+#define MATCH_R2_PUSH_N	(MATCH_R2_OP (PP_N) | SET_IW_L5I4X1_X (R2_PP_N_PUSH_N))
+#define MASK_R2_PUSH_N	(MASK_R2_OP | IW_L5I4X1_X_SHIFTED_MASK)
+#define MATCH_R2_RDCTL	MATCH_R2_OPX (RDCTL, 0, 0, 0)
+#define MASK_R2_RDCTL	MASK_R2_OPX (1, 1, 0, 0)
+#define MATCH_R2_RDPRS	MATCH_R2_I12 (RDPRS)
+#define MASK_R2_RDPRS	MASK_R2_I12
+#define MATCH_R2_RET	MATCH_R2_OPX (RET, 0x1f, 0, 0)
+#define MASK_R2_RET	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_RET_N	(MATCH_R2_R_N (RET_N) | SET_IW_X2L5_IMM5 (0))
+#define MASK_R2_RET_N	(MASK_R2_R_N | IW_X2L5_IMM5_SHIFTED_MASK)
+#define MATCH_R2_ROL	MATCH_R2_OPX0 (ROL)
+#define MASK_R2_ROL	MASK_R2_OPX0
+#define MATCH_R2_ROLI	MATCH_R2_OPX (ROLI, 0, 0, 0)
+#define MASK_R2_ROLI	MASK_R2_OPX (0, 1, 0, 0)
+#define MATCH_R2_ROR	MATCH_R2_OPX0 (ROR)
+#define MASK_R2_ROR	MASK_R2_OPX0
+#define MATCH_R2_SLL	MATCH_R2_OPX0 (SLL)
+#define MASK_R2_SLL	MASK_R2_OPX0
+#define MATCH_R2_SLLI	MATCH_R2_OPX (SLLI, 0, 0, 0)
+#define MASK_R2_SLLI	MASK_R2_OPX (0, 1, 0, 0)
+#define MATCH_R2_SLL_N	MATCH_R2_R_N (SLL_N)
+#define MASK_R2_SLL_N	MASK_R2_R_N
+#define MATCH_R2_SLLI_N	(MATCH_R2_OP (SHI_N) | SET_IW_T2X1L3_X (R2_SHI_N_SLLI_N))
+#define MASK_R2_SLLI_N	(MASK_R2_OP | IW_T2X1L3_X_SHIFTED_MASK)
+#define MATCH_R2_SPADDI_N	MATCH_R2_OP (SPADDI_N)
+#define MASK_R2_SPADDI_N	MASK_R2_OP
+#define MATCH_R2_SPDECI_N	(MATCH_R2_OP (SPI_N) | SET_IW_X1I7_X (R2_SPI_N_SPDECI_N))
+#define MASK_R2_SPDECI_N	(MASK_R2_OP | IW_X1I7_X_SHIFTED_MASK)
+#define MATCH_R2_SPINCI_N	(MATCH_R2_OP (SPI_N) | SET_IW_X1I7_X (R2_SPI_N_SPINCI_N))
+#define MASK_R2_SPINCI_N	(MASK_R2_OP | IW_X1I7_X_SHIFTED_MASK)
+#define MATCH_R2_SRA	MATCH_R2_OPX0 (SRA)
+#define MASK_R2_SRA	MASK_R2_OPX0
+#define MATCH_R2_SRAI	MATCH_R2_OPX (SRAI, 0, 0, 0)
+#define MASK_R2_SRAI	MASK_R2_OPX (0, 1, 0, 0)
+#define MATCH_R2_SRL	MATCH_R2_OPX0 (SRL)
+#define MASK_R2_SRL	MASK_R2_OPX0
+#define MATCH_R2_SRLI	MATCH_R2_OPX (SRLI, 0, 0, 0)
+#define MASK_R2_SRLI	MASK_R2_OPX (0, 1, 0, 0)
+#define MATCH_R2_SRL_N	MATCH_R2_R_N (SRL_N)
+#define MASK_R2_SRL_N	MASK_R2_R_N
+#define MATCH_R2_SRLI_N	(MATCH_R2_OP (SHI_N) | SET_IW_T2X1L3_X (R2_SHI_N_SRLI_N))
+#define MASK_R2_SRLI_N	(MASK_R2_OP | IW_T2X1L3_X_SHIFTED_MASK)
+#define MATCH_R2_STB	MATCH_R2_OP (STB)
+#define MASK_R2_STB	MASK_R2_OP
+#define MATCH_R2_STBIO	MATCH_R2_I12 (STBIO)
+#define MASK_R2_STBIO	MASK_R2_I12
+#define MATCH_R2_STB_N	MATCH_R2_OP (STB_N)
+#define MASK_R2_STB_N	MASK_R2_OP
+#define MATCH_R2_STBZ_N	(MATCH_R2_OP (STZ_N) | SET_IW_T1X1I6_X (R2_STZ_N_STBZ_N))
+#define MASK_R2_STBZ_N	(MASK_R2_OP | IW_T1X1I6_X_SHIFTED_MASK)
+#define MATCH_R2_STEX	MATCH_R2_OPX0 (STEX)
+#define MASK_R2_STEX	MASK_R2_OPX0
+#define MATCH_R2_STH	MATCH_R2_OP (STH)
+#define MASK_R2_STH	MASK_R2_OP
+#define MATCH_R2_STHIO	MATCH_R2_I12 (STHIO)
+#define MASK_R2_STHIO	MASK_R2_I12
+#define MATCH_R2_STH_N	MATCH_R2_OP (STH_N)
+#define MASK_R2_STH_N	MASK_R2_OP
+#define MATCH_R2_STSEX	MATCH_R2_OPX0 (STSEX)
+#define MASK_R2_STSEX	MASK_R2_OPX0
+#define MATCH_R2_STW	MATCH_R2_OP (STW)
+#define MASK_R2_STW	MASK_R2_OP
+#define MATCH_R2_STWIO	MATCH_R2_I12 (STWIO)
+#define MASK_R2_STWIO	MASK_R2_I12
+#define MATCH_R2_STWM	MATCH_R2_I12 (STWM)
+#define MASK_R2_STWM	MASK_R2_I12
+#define MATCH_R2_STWSP_N	MATCH_R2_OP (STWSP_N)
+#define MASK_R2_STWSP_N	MASK_R2_OP
+#define MATCH_R2_STW_N	MATCH_R2_OP (STW_N)
+#define MASK_R2_STW_N	MASK_R2_OP
+#define MATCH_R2_STWZ_N	MATCH_R2_OP (STZ_N)
+#define MASK_R2_STWZ_N	MASK_R2_OP
+#define MATCH_R2_SUB	MATCH_R2_OPX0 (SUB)
+#define MASK_R2_SUB	MASK_R2_OPX0
+#define MATCH_R2_SUBI	MATCH_R2_OP (ADDI)
+#define MASK_R2_SUBI	MASK_R2_OP
+#define MATCH_R2_SUB_N	(MATCH_R2_OP (AS_N) | SET_IW_T3X1_X (R2_AS_N_SUB_N))
+#define MASK_R2_SUB_N	(MASK_R2_OP | IW_T3X1_X_SHIFTED_MASK)
+#define MATCH_R2_SUBI_N	(MATCH_R2_OP (ASI_N) | SET_IW_T2X1I3_X (R2_ASI_N_SUBI_N))
+#define MASK_R2_SUBI_N	(MASK_R2_OP | IW_T2X1I3_X_SHIFTED_MASK)
+#define MATCH_R2_SYNC	MATCH_R2_OPX (SYNC, 0, 0, 0)
+#define MASK_R2_SYNC	MASK_R2_OPX (1, 1, 1, 1)
+#define MATCH_R2_TRAP	MATCH_R2_OPX (TRAP, 0, 0, 0x1d)
+#define MASK_R2_TRAP	MASK_R2_OPX (1, 1, 1, 0)
+#define MATCH_R2_TRAP_N	MATCH_R2_R_N (TRAP_N)
+#define MASK_R2_TRAP_N	MASK_R2_R_N
+#define MATCH_R2_WRCTL	MATCH_R2_OPX (WRCTL, 0, 0, 0)
+#define MASK_R2_WRCTL	MASK_R2_OPX (0, 1, 1, 0)
+#define MATCH_R2_WRPIE	MATCH_R2_OPX (WRPIE, 0, 0, 0)
+#define MASK_R2_WRPIE	MASK_R2_OPX (0, 1, 0, 1)
+#define MATCH_R2_WRPRS	MATCH_R2_OPX (WRPRS, 0, 0, 0)
+#define MASK_R2_WRPRS	MASK_R2_OPX (0, 1, 0, 1)
+#define MATCH_R2_XOR	MATCH_R2_OPX0 (XOR)
+#define MASK_R2_XOR	MASK_R2_OPX0
+#define MATCH_R2_XORHI	MATCH_R2_OP (XORHI)
+#define MASK_R2_XORHI	MASK_R2_OP
+#define MATCH_R2_XORI	MATCH_R2_OP (XORI)
+#define MASK_R2_XORI	MASK_R2_OP
+#define MATCH_R2_XOR_N	MATCH_R2_R_N (XOR_N)
+#define MASK_R2_XOR_N	MASK_R2_R_N
+
+#endif /* _NIOS2R2_H */
+
+
+/* These are the data structures used to hold the instruction information.  */
+extern const struct nios2_opcode nios2_r1_opcodes[];
+extern const int nios2_num_r1_opcodes;
+extern const struct nios2_opcode nios2_r2_opcodes[];
+extern const int nios2_num_r2_opcodes;
+extern struct nios2_opcode *nios2_opcodes;
+extern int nios2_num_opcodes;
+
+/* These are the data structures used to hold the register information.  */
+extern const struct nios2_reg nios2_builtin_regs[];
+extern struct nios2_reg *nios2_regs;
+extern const int nios2_num_builtin_regs;
+extern int nios2_num_regs;
+
+/* Return the opcode descriptor for a single instruction.  */
+extern const struct nios2_opcode *
+nios2_find_opcode_hash (unsigned long, unsigned long);
+
+/* Lookup tables for R2 immediate decodings.  */
+extern unsigned int nios2_r2_asi_n_mappings[];
+extern const int nios2_num_r2_asi_n_mappings;
+extern unsigned int nios2_r2_shi_n_mappings[];
+extern const int nios2_num_r2_shi_n_mappings;
+extern unsigned int nios2_r2_andi_n_mappings[];
+extern const int nios2_num_r2_andi_n_mappings;
+
+/* Lookup table for 3-bit register decodings.  */
+extern int nios2_r2_reg3_mappings[];
+extern const int nios2_num_r2_reg3_mappings;
+
+/* Lookup table for REG_RANGE value list decodings.  */
+extern unsigned long nios2_r2_reg_range_mappings[];
+extern const int nios2_num_r2_reg_range_mappings;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _NIOS2_H */
+/* Altera Nios II opcode list.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+   Contributed by Nigel Gray (ngray@altera.com).
+   Contributed by Mentor Graphics, Inc.
+
+   This file is part of the GNU opcodes library.
+
+   This library 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 3, or (at your option)
+   any later version.
+
+   It 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 file; see the file COPYING.  If not, write to the
+   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+/*
+#include "sysdep.h"
+#include <stdio.h>
+#include "opcode/nios2.h"
+*/
+/* Register string table */
+
+const struct nios2_reg nios2_builtin_regs[] = {
+  /* Standard register names.  */
+  {"zero", 0, REG_NORMAL},
+  {"at", 1, REG_NORMAL},			/* assembler temporary */
+  {"r2", 2, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r3", 3, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r4", 4, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r5", 5, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r6", 6, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r7", 7, REG_NORMAL | REG_3BIT | REG_LDWM},
+  {"r8", 8, REG_NORMAL | REG_LDWM},
+  {"r9", 9, REG_NORMAL | REG_LDWM},
+  {"r10", 10, REG_NORMAL | REG_LDWM},
+  {"r11", 11, REG_NORMAL | REG_LDWM},
+  {"r12", 12, REG_NORMAL | REG_LDWM},
+  {"r13", 13, REG_NORMAL | REG_LDWM},
+  {"r14", 14, REG_NORMAL | REG_LDWM},
+  {"r15", 15, REG_NORMAL | REG_LDWM},
+  {"r16", 16, REG_NORMAL | REG_3BIT | REG_LDWM | REG_POP},
+  {"r17", 17, REG_NORMAL | REG_3BIT | REG_LDWM | REG_POP},
+  {"r18", 18, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r19", 19, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r20", 20, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r21", 21, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r22", 22, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r23", 23, REG_NORMAL | REG_LDWM | REG_POP},
+  {"et", 24, REG_NORMAL},
+  {"bt", 25, REG_NORMAL},
+  {"gp", 26, REG_NORMAL},			/* global pointer */
+  {"sp", 27, REG_NORMAL},			/* stack pointer */
+  {"fp", 28, REG_NORMAL | REG_LDWM | REG_POP},	/* frame pointer */
+  {"ea", 29, REG_NORMAL},			/* exception return address */
+  {"sstatus", 30, REG_NORMAL},			/* saved processor status */
+  {"ra", 31, REG_NORMAL | REG_LDWM | REG_POP},	/* return address */
+
+  /* Alternative names for special registers.  */
+  {"r0", 0, REG_NORMAL},
+  {"r1", 1, REG_NORMAL},
+  {"r24", 24, REG_NORMAL},
+  {"r25", 25, REG_NORMAL},
+  {"r26", 26, REG_NORMAL},
+  {"r27", 27, REG_NORMAL},
+  {"r28", 28, REG_NORMAL | REG_LDWM | REG_POP},
+  {"r29", 29, REG_NORMAL},
+  {"r30", 30, REG_NORMAL},
+  {"ba", 30, REG_NORMAL},			/* breakpoint return address */
+  {"r31", 31, REG_NORMAL | REG_LDWM | REG_POP},
+
+  /* Control register names.  */
+  {"status", 0, REG_CONTROL},
+  {"estatus", 1, REG_CONTROL},
+  {"bstatus", 2, REG_CONTROL},
+  {"ienable", 3, REG_CONTROL},
+  {"ipending", 4, REG_CONTROL},
+  {"cpuid", 5, REG_CONTROL},
+  {"ctl6", 6, REG_CONTROL},
+  {"exception", 7, REG_CONTROL},
+  {"pteaddr", 8, REG_CONTROL},
+  {"tlbacc", 9, REG_CONTROL},
+  {"tlbmisc", 10, REG_CONTROL},
+  {"eccinj", 11, REG_CONTROL},
+  {"badaddr", 12, REG_CONTROL},
+  {"config", 13, REG_CONTROL},
+  {"mpubase", 14, REG_CONTROL},
+  {"mpuacc", 15, REG_CONTROL},
+  {"ctl16", 16, REG_CONTROL},
+  {"ctl17", 17, REG_CONTROL},
+  {"ctl18", 18, REG_CONTROL},
+  {"ctl19", 19, REG_CONTROL},
+  {"ctl20", 20, REG_CONTROL},
+  {"ctl21", 21, REG_CONTROL},
+  {"ctl22", 22, REG_CONTROL},
+  {"ctl23", 23, REG_CONTROL},
+  {"ctl24", 24, REG_CONTROL},
+  {"ctl25", 25, REG_CONTROL},
+  {"ctl26", 26, REG_CONTROL},
+  {"ctl27", 27, REG_CONTROL},
+  {"ctl28", 28, REG_CONTROL},
+  {"ctl29", 29, REG_CONTROL},
+  {"ctl30", 30, REG_CONTROL},
+  {"ctl31", 31, REG_CONTROL},
+
+  /* Alternative names for special control registers.  */
+  {"ctl0", 0, REG_CONTROL},
+  {"ctl1", 1, REG_CONTROL},
+  {"ctl2", 2, REG_CONTROL},
+  {"ctl3", 3, REG_CONTROL},
+  {"ctl4", 4, REG_CONTROL},
+  {"ctl5", 5, REG_CONTROL},
+  {"ctl7", 7, REG_CONTROL},
+  {"ctl8", 8, REG_CONTROL},
+  {"ctl9", 9, REG_CONTROL},
+  {"ctl10", 10, REG_CONTROL},
+  {"ctl11", 11, REG_CONTROL},
+  {"ctl12", 12, REG_CONTROL},
+  {"ctl13", 13, REG_CONTROL},
+  {"ctl14", 14, REG_CONTROL},
+  {"ctl15", 15, REG_CONTROL},
+
+  /* Coprocessor register names.  */
+  {"c0", 0, REG_COPROCESSOR},
+  {"c1", 1, REG_COPROCESSOR},
+  {"c2", 2, REG_COPROCESSOR},
+  {"c3", 3, REG_COPROCESSOR},
+  {"c4", 4, REG_COPROCESSOR},
+  {"c5", 5, REG_COPROCESSOR},
+  {"c6", 6, REG_COPROCESSOR},
+  {"c7", 7, REG_COPROCESSOR},
+  {"c8", 8, REG_COPROCESSOR},
+  {"c9", 9, REG_COPROCESSOR},
+  {"c10", 10, REG_COPROCESSOR},
+  {"c11", 11, REG_COPROCESSOR},
+  {"c12", 12, REG_COPROCESSOR},
+  {"c13", 13, REG_COPROCESSOR},
+  {"c14", 14, REG_COPROCESSOR},
+  {"c15", 15, REG_COPROCESSOR},
+  {"c16", 16, REG_COPROCESSOR},
+  {"c17", 17, REG_COPROCESSOR},
+  {"c18", 18, REG_COPROCESSOR},
+  {"c19", 19, REG_COPROCESSOR},
+  {"c20", 20, REG_COPROCESSOR},
+  {"c21", 21, REG_COPROCESSOR},
+  {"c22", 22, REG_COPROCESSOR},
+  {"c23", 23, REG_COPROCESSOR},
+  {"c24", 24, REG_COPROCESSOR},
+  {"c25", 25, REG_COPROCESSOR},
+  {"c26", 26, REG_COPROCESSOR},
+  {"c27", 27, REG_COPROCESSOR},
+  {"c28", 28, REG_COPROCESSOR},
+  {"c29", 29, REG_COPROCESSOR},
+  {"c30", 30, REG_COPROCESSOR},
+  {"c31", 31, REG_COPROCESSOR},
+};
+
+#define NIOS2_NUM_REGS \
+       ((sizeof nios2_builtin_regs) / (sizeof (nios2_builtin_regs[0])))
+const int nios2_num_builtin_regs = NIOS2_NUM_REGS;
+
+/* This is not const in order to allow for dynamic extensions to the
+   built-in instruction set.  */
+struct nios2_reg *nios2_regs = (struct nios2_reg *) nios2_builtin_regs;
+int nios2_num_regs = NIOS2_NUM_REGS;
+#undef NIOS2_NUM_REGS
+
+/* This is the opcode table used by the Nios II GNU as, disassembler
+   and GDB.  */
+const struct nios2_opcode nios2_r1_opcodes[] =
+{
+  /* { name, args, args_test, num_args, size, format,
+       match, mask, pinfo, overflow } */
+  {"add", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_ADD, MASK_R1_ADD, 0, no_overflow},
+  {"addi", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_ADDI, MASK_R1_ADDI, 0, signed_immed16_overflow},
+  {"and", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_AND, MASK_R1_AND, 0, no_overflow},
+  {"andhi", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_ANDHI, MASK_R1_ANDHI, 0, unsigned_immed16_overflow},
+  {"andi", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_ANDI, MASK_R1_ANDI, 0, unsigned_immed16_overflow},
+  {"beq", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BEQ, MASK_R1_BEQ, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bge", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BGE, MASK_R1_BGE, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgeu", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BGEU, MASK_R1_BGEU, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgt", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BGT, MASK_R1_BGT,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgtu", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BGTU, MASK_R1_BGTU,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"ble", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BLE, MASK_R1_BLE,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bleu", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BLEU, MASK_R1_BLEU,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"blt", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BLT, MASK_R1_BLT, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bltu", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BLTU, MASK_R1_BLTU, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bne", "s,t,o", "s,t,o,E", 3, 4, iw_i_type,
+   MATCH_R1_BNE, MASK_R1_BNE, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"br", "o", "o,E", 1, 4, iw_i_type,
+   MATCH_R1_BR, MASK_R1_BR, NIOS2_INSN_UBRANCH, branch_target_overflow},
+  {"break", "j", "j,E", 1, 4, iw_r_type,
+   MATCH_R1_BREAK, MASK_R1_BREAK, NIOS2_INSN_OPTARG, no_overflow},
+  {"bret", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_BRET, MASK_R1_BRET, 0, no_overflow},
+  {"call", "m", "m,E", 1, 4, iw_j_type,
+   MATCH_R1_CALL, MASK_R1_CALL, NIOS2_INSN_CALL, call_target_overflow},
+  {"callr", "s", "s,E", 1, 4, iw_r_type,
+   MATCH_R1_CALLR, MASK_R1_CALLR, 0, no_overflow},
+  {"cmpeq", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPEQ, MASK_R1_CMPEQ, 0, no_overflow},
+  {"cmpeqi", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPEQI, MASK_R1_CMPEQI, 0, signed_immed16_overflow},
+  {"cmpge", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPGE, MASK_R1_CMPGE, 0, no_overflow},
+  {"cmpgei", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPGEI, MASK_R1_CMPGEI, 0, signed_immed16_overflow},
+  {"cmpgeu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPGEU, MASK_R1_CMPGEU, 0, no_overflow},
+  {"cmpgeui", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPGEUI, MASK_R1_CMPGEUI, 0, unsigned_immed16_overflow},
+  {"cmpgt", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPGT, MASK_R1_CMPGT, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpgti", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPGTI, MASK_R1_CMPGTI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"cmpgtu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPGTU, MASK_R1_CMPGTU, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpgtui", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPGTUI, MASK_R1_CMPGTUI,
+   NIOS2_INSN_MACRO, unsigned_immed16_overflow},
+  {"cmple", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPLE, MASK_R1_CMPLE, NIOS2_INSN_MACRO, no_overflow},
+  {"cmplei", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPLEI, MASK_R1_CMPLEI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"cmpleu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPLEU, MASK_R1_CMPLEU, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpleui", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPLEUI, MASK_R1_CMPLEUI,
+   NIOS2_INSN_MACRO, unsigned_immed16_overflow},
+  {"cmplt", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPLT, MASK_R1_CMPLT, 0, no_overflow},
+  {"cmplti", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPLTI, MASK_R1_CMPLTI, 0, signed_immed16_overflow},
+  {"cmpltu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPLTU, MASK_R1_CMPLTU, 0, no_overflow},
+  {"cmpltui", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPLTUI, MASK_R1_CMPLTUI, 0, unsigned_immed16_overflow},
+  {"cmpne", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_CMPNE, MASK_R1_CMPNE, 0, no_overflow},
+  {"cmpnei", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_CMPNEI, MASK_R1_CMPNEI, 0, signed_immed16_overflow},
+  {"custom", "l,d,s,t", "l,d,s,t,E", 4, 4, iw_custom_type,
+   MATCH_R1_CUSTOM, MASK_R1_CUSTOM, 0, custom_opcode_overflow},
+  {"div", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_DIV, MASK_R1_DIV, 0, no_overflow},
+  {"divu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_DIVU, MASK_R1_DIVU, 0, no_overflow},
+  {"eret", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_ERET, MASK_R1_ERET, 0, no_overflow},
+  {"flushd", "i(s)", "i(s),E", 2, 4, iw_i_type,
+   MATCH_R1_FLUSHD, MASK_R1_FLUSHD, 0, address_offset_overflow},
+  {"flushda", "i(s)", "i(s),E", 2, 4, iw_i_type,
+   MATCH_R1_FLUSHDA, MASK_R1_FLUSHDA, 0, address_offset_overflow},
+  {"flushi", "s", "s,E", 1, 4, iw_r_type,
+   MATCH_R1_FLUSHI, MASK_R1_FLUSHI, 0, no_overflow},
+  {"flushp", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_FLUSHP, MASK_R1_FLUSHP, 0, no_overflow},
+  {"initd", "i(s)", "i(s),E", 2, 4, iw_i_type,
+   MATCH_R1_INITD, MASK_R1_INITD, 0, address_offset_overflow},
+  {"initda", "i(s)", "i(s),E", 2, 4, iw_i_type,
+   MATCH_R1_INITDA, MASK_R1_INITDA, 0, address_offset_overflow},
+  {"initi", "s", "s,E", 1, 4, iw_r_type,
+   MATCH_R1_INITI, MASK_R1_INITI, 0, no_overflow},
+  {"jmp", "s", "s,E", 1, 4, iw_r_type,
+   MATCH_R1_JMP, MASK_R1_JMP, 0, no_overflow},
+  {"jmpi", "m", "m,E", 1, 4, iw_j_type,
+   MATCH_R1_JMPI, MASK_R1_JMPI, 0, call_target_overflow},
+  {"ldb", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDB, MASK_R1_LDB, 0, address_offset_overflow},
+  {"ldbio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDBIO, MASK_R1_LDBIO, 0, address_offset_overflow},
+  {"ldbu", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDBU, MASK_R1_LDBU, 0, address_offset_overflow},
+  {"ldbuio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDBUIO, MASK_R1_LDBUIO, 0, address_offset_overflow},
+  {"ldh", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDH, MASK_R1_LDH, 0, address_offset_overflow},
+  {"ldhio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDHIO, MASK_R1_LDHIO, 0, address_offset_overflow},
+  {"ldhu", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDHU, MASK_R1_LDHU, 0, address_offset_overflow},
+  {"ldhuio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDHUIO, MASK_R1_LDHUIO, 0, address_offset_overflow},
+  {"ldw", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDW, MASK_R1_LDW, 0, address_offset_overflow},
+  {"ldwio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_LDWIO, MASK_R1_LDWIO, 0, address_offset_overflow},
+  {"mov", "d,s", "d,s,E", 2, 4, iw_r_type,
+   MATCH_R1_MOV, MASK_R1_MOV, NIOS2_INSN_MACRO_MOV, no_overflow},
+  {"movhi", "t,u", "t,u,E", 2, 4, iw_i_type,
+   MATCH_R1_MOVHI, MASK_R1_MOVHI,
+   NIOS2_INSN_MACRO_MOVI, unsigned_immed16_overflow},
+  {"movi", "t,i", "t,i,E", 2, 4, iw_i_type,
+   MATCH_R1_MOVI, MASK_R1_MOVI, NIOS2_INSN_MACRO_MOVI, signed_immed16_overflow},
+  {"movia", "t,o", "t,o,E", 2, 4, iw_i_type,
+   MATCH_R1_ORHI, MASK_R1_ORHI, NIOS2_INSN_MACRO_MOVIA, no_overflow},
+  {"movui", "t,u", "t,u,E", 2, 4, iw_i_type,
+   MATCH_R1_MOVUI, MASK_R1_MOVUI,
+   NIOS2_INSN_MACRO_MOVI, unsigned_immed16_overflow},
+  {"mul", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_MUL, MASK_R1_MUL, 0, no_overflow},
+  {"muli", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_MULI, MASK_R1_MULI, 0, signed_immed16_overflow},
+  {"mulxss", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_MULXSS, MASK_R1_MULXSS, 0, no_overflow},
+  {"mulxsu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_MULXSU, MASK_R1_MULXSU, 0, no_overflow},
+  {"mulxuu", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_MULXUU, MASK_R1_MULXUU, 0, no_overflow},
+  {"nextpc", "d", "d,E", 1, 4, iw_r_type,
+   MATCH_R1_NEXTPC, MASK_R1_NEXTPC, 0, no_overflow},
+  {"nop", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_NOP, MASK_R1_NOP, NIOS2_INSN_MACRO_MOV, no_overflow},
+  {"nor", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_NOR, MASK_R1_NOR, 0, no_overflow},
+  {"or", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_OR, MASK_R1_OR, 0, no_overflow},
+  {"orhi", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_ORHI, MASK_R1_ORHI, 0, unsigned_immed16_overflow},
+  {"ori", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_ORI, MASK_R1_ORI, 0, unsigned_immed16_overflow},
+  {"rdctl", "d,c", "d,c,E", 2, 4, iw_r_type,
+   MATCH_R1_RDCTL, MASK_R1_RDCTL, 0, no_overflow},
+  {"rdprs", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_RDPRS, MASK_R1_RDPRS, 0, signed_immed16_overflow},
+  {"ret", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_RET, MASK_R1_RET, 0, no_overflow},
+  {"rol", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_ROL, MASK_R1_ROL, 0, no_overflow},
+  {"roli", "d,s,j", "d,s,j,E", 3, 4, iw_r_type,
+   MATCH_R1_ROLI, MASK_R1_ROLI, 0, unsigned_immed5_overflow},
+  {"ror", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_ROR, MASK_R1_ROR, 0, no_overflow},
+  {"sll", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_SLL, MASK_R1_SLL, 0, no_overflow},
+  {"slli", "d,s,j", "d,s,j,E", 3, 4, iw_r_type,
+   MATCH_R1_SLLI, MASK_R1_SLLI, 0, unsigned_immed5_overflow},
+  {"sra", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_SRA, MASK_R1_SRA, 0, no_overflow},
+  {"srai", "d,s,j", "d,s,j,E", 3, 4, iw_r_type,
+   MATCH_R1_SRAI, MASK_R1_SRAI, 0, unsigned_immed5_overflow},
+  {"srl", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_SRL, MASK_R1_SRL, 0, no_overflow},
+  {"srli", "d,s,j", "d,s,j,E", 3, 4, iw_r_type,
+   MATCH_R1_SRLI, MASK_R1_SRLI, 0, unsigned_immed5_overflow},
+  {"stb", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STB, MASK_R1_STB, 0, address_offset_overflow},
+  {"stbio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STBIO, MASK_R1_STBIO, 0, address_offset_overflow},
+  {"sth", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STH, MASK_R1_STH, 0, address_offset_overflow},
+  {"sthio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STHIO, MASK_R1_STHIO, 0, address_offset_overflow},
+  {"stw", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STW, MASK_R1_STW, 0, address_offset_overflow},
+  {"stwio", "t,i(s)", "t,i(s),E", 3, 4, iw_i_type,
+   MATCH_R1_STWIO, MASK_R1_STWIO, 0, address_offset_overflow},
+  {"sub", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_SUB, MASK_R1_SUB, 0, no_overflow},
+  {"subi", "t,s,i", "t,s,i,E", 3, 4, iw_i_type,
+   MATCH_R1_SUBI, MASK_R1_SUBI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"sync", "", "E", 0, 4, iw_r_type,
+   MATCH_R1_SYNC, MASK_R1_SYNC, 0, no_overflow},
+  {"trap", "j", "j,E", 1, 4, iw_r_type,
+   MATCH_R1_TRAP, MASK_R1_TRAP, NIOS2_INSN_OPTARG, no_overflow},
+  {"wrctl", "c,s", "c,s,E", 2, 4, iw_r_type,
+   MATCH_R1_WRCTL, MASK_R1_WRCTL, 0, no_overflow},
+  {"wrprs", "d,s", "d,s,E", 2, 4, iw_r_type,
+   MATCH_R1_WRPRS, MASK_R1_WRPRS, 0, no_overflow},
+  {"xor", "d,s,t", "d,s,t,E", 3, 4, iw_r_type,
+   MATCH_R1_XOR, MASK_R1_XOR, 0, no_overflow},
+  {"xorhi", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_XORHI, MASK_R1_XORHI, 0, unsigned_immed16_overflow},
+  {"xori", "t,s,u", "t,s,u,E", 3, 4, iw_i_type,
+   MATCH_R1_XORI, MASK_R1_XORI, 0, unsigned_immed16_overflow}
+};
+
+#define NIOS2_NUM_R1_OPCODES \
+       ((sizeof nios2_r1_opcodes) / (sizeof (nios2_r1_opcodes[0])))
+const int nios2_num_r1_opcodes = NIOS2_NUM_R1_OPCODES;
+
+
+const struct nios2_opcode nios2_r2_opcodes[] =
+{
+  /* { name, args, args_test, num_args, size, format,
+       match, mask, pinfo, overflow } */
+  {"add", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_ADD, MASK_R2_ADD, 0, no_overflow},
+  {"addi", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ADDI, MASK_R2_ADDI, 0, signed_immed16_overflow},
+  {"add.n", "D,S,T", "D,S,T,E", 3, 2, iw_T3X1_type,
+   MATCH_R2_ADD_N, MASK_R2_ADD_N, 0, no_overflow},
+  {"addi.n", "D,S,e", "D,S,e,E", 3, 2, iw_T2X1I3_type,
+   MATCH_R2_ADDI_N, MASK_R2_ADDI_N, 0, enumeration_overflow},
+  {"and", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_AND, MASK_R2_AND, 0, no_overflow},
+  {"andchi", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ANDCHI, MASK_R2_ANDCHI, 0, unsigned_immed16_overflow},
+  {"andci", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ANDCI, MASK_R2_ANDCI, 0, unsigned_immed16_overflow},
+  {"andhi", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ANDHI, MASK_R2_ANDHI, 0, unsigned_immed16_overflow},
+  {"andi", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ANDI, MASK_R2_ANDI, 0, unsigned_immed16_overflow},
+  {"andi.n", "T,S,g", "T,S,g,E", 3, 2, iw_T2I4_type,
+   MATCH_R2_ANDI_N, MASK_R2_ANDI_N, 0, enumeration_overflow},
+  {"and.n", "D,S,T", "D,S,T,E", 3, 2, iw_T2X3_type,
+   MATCH_R2_AND_N, MASK_R2_AND_N, 0, no_overflow},
+  {"beq", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BEQ, MASK_R2_BEQ, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"beqz.n", "S,P", "S,P,E", 2, 2, iw_T1I7_type,
+   MATCH_R2_BEQZ_N, MASK_R2_BEQZ_N, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bge", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BGE, MASK_R2_BGE, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgeu", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BGEU, MASK_R2_BGEU, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgt", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BGT, MASK_R2_BGT,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bgtu", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BGTU, MASK_R2_BGTU,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"ble", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BLE, MASK_R2_BLE,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bleu", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BLEU, MASK_R2_BLEU,
+   NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"blt", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BLT, MASK_R2_BLT, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bltu", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BLTU, MASK_R2_BLTU, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bne", "s,t,o", "s,t,o,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_BNE, MASK_R2_BNE, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"bnez.n", "S,P", "S,P,E", 2, 2, iw_T1I7_type,
+   MATCH_R2_BNEZ_N, MASK_R2_BNEZ_N, NIOS2_INSN_CBRANCH, branch_target_overflow},
+  {"br", "o", "o,E", 1, 4, iw_F2I16_type,
+   MATCH_R2_BR, MASK_R2_BR, NIOS2_INSN_UBRANCH, branch_target_overflow},
+  {"break", "j", "j,E", 1, 4, iw_F3X6L5_type,
+   MATCH_R2_BREAK, MASK_R2_BREAK, NIOS2_INSN_OPTARG, no_overflow},
+  {"break.n", "j", "j,E", 1, 2, iw_X2L5_type,
+   MATCH_R2_BREAK_N, MASK_R2_BREAK_N, NIOS2_INSN_OPTARG, no_overflow},
+  {"bret", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_BRET, MASK_R2_BRET, 0, no_overflow},
+  {"br.n", "O", "O,E", 1, 2, iw_I10_type,
+   MATCH_R2_BR_N, MASK_R2_BR_N, NIOS2_INSN_UBRANCH, branch_target_overflow},
+  {"call", "m", "m,E", 1, 4, iw_L26_type,
+   MATCH_R2_CALL, MASK_R2_CALL, NIOS2_INSN_CALL, call_target_overflow},
+  {"callr", "s", "s,E", 1, 4, iw_F3X6_type,
+   MATCH_R2_CALLR, MASK_R2_CALLR, 0, no_overflow},
+  {"callr.n", "s", "s,E", 1, 2, iw_F1X1_type,
+   MATCH_R2_CALLR_N, MASK_R2_CALLR_N, 0, no_overflow},
+  {"cmpeq", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPEQ, MASK_R2_CMPEQ, 0, no_overflow},
+  {"cmpeqi", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPEQI, MASK_R2_CMPEQI, 0, signed_immed16_overflow},
+  {"cmpge", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPGE, MASK_R2_CMPGE, 0, no_overflow},
+  {"cmpgei", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPGEI, MASK_R2_CMPGEI, 0, signed_immed16_overflow},
+  {"cmpgeu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPGEU, MASK_R2_CMPGEU, 0, no_overflow},
+  {"cmpgeui", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPGEUI, MASK_R2_CMPGEUI, 0, unsigned_immed16_overflow},
+  {"cmpgt", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPGT, MASK_R2_CMPGT, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpgti", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPGTI, MASK_R2_CMPGTI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"cmpgtu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPGTU, MASK_R2_CMPGTU, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpgtui", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPGTUI, MASK_R2_CMPGTUI,
+   NIOS2_INSN_MACRO, unsigned_immed16_overflow},
+  {"cmple", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPLE, MASK_R2_CMPLE, NIOS2_INSN_MACRO, no_overflow},
+  {"cmplei", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPLEI, MASK_R2_CMPLEI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"cmpleu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPLEU, MASK_R2_CMPLEU, NIOS2_INSN_MACRO, no_overflow},
+  {"cmpleui", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPLEUI, MASK_R2_CMPLEUI,
+   NIOS2_INSN_MACRO, unsigned_immed16_overflow},
+  {"cmplt", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPLT, MASK_R2_CMPLT, 0, no_overflow},
+  {"cmplti", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPLTI, MASK_R2_CMPLTI, 0, signed_immed16_overflow},
+  {"cmpltu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPLTU, MASK_R2_CMPLTU, 0, no_overflow},
+  {"cmpltui", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPLTUI, MASK_R2_CMPLTUI, 0, unsigned_immed16_overflow},
+  {"cmpne", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_CMPNE, MASK_R2_CMPNE, 0, no_overflow},
+  {"cmpnei", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_CMPNEI, MASK_R2_CMPNEI, 0, signed_immed16_overflow},
+  {"custom", "l,d,s,t", "l,d,s,t,E", 4, 4, iw_F3X8_type,
+   MATCH_R2_CUSTOM, MASK_R2_CUSTOM, 0, custom_opcode_overflow},
+  {"div", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_DIV, MASK_R2_DIV, 0, no_overflow},
+  {"divu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_DIVU, MASK_R2_DIVU, 0, no_overflow},
+  {"eni", "j", "j,E", 1, 4, iw_F3X6L5_type,
+   MATCH_R2_ENI, MASK_R2_ENI, NIOS2_INSN_OPTARG, no_overflow},
+  {"eret", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_ERET, MASK_R2_ERET, 0, no_overflow},
+  {"extract", "t,s,j,k", "t,s,j,k,E", 4, 4, iw_F2X6L10_type,
+   MATCH_R2_EXTRACT, MASK_R2_EXTRACT, 0, no_overflow},
+  {"flushd", "I(s)", "I(s),E", 2, 4, iw_F1X4I12_type,
+   MATCH_R2_FLUSHD, MASK_R2_FLUSHD, 0, address_offset_overflow},
+  {"flushda", "I(s)", "I(s),E", 2, 4, iw_F1X4I12_type,
+   MATCH_R2_FLUSHDA, MASK_R2_FLUSHDA, 0, address_offset_overflow},
+  {"flushi", "s", "s,E", 1, 4, iw_F3X6_type,
+   MATCH_R2_FLUSHI, MASK_R2_FLUSHI, 0, no_overflow},
+  {"flushp", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_FLUSHP, MASK_R2_FLUSHP, 0, no_overflow},
+  {"initd", "I(s)", "I(s),E", 2, 4, iw_F1X4I12_type,
+   MATCH_R2_INITD, MASK_R2_INITD, 0, address_offset_overflow},
+  {"initda", "I(s)", "I(s),E", 2, 4, iw_F1X4I12_type,
+   MATCH_R2_INITDA, MASK_R2_INITDA, 0, address_offset_overflow},
+  {"initi", "s", "s,E", 1, 4, iw_F3X6_type,
+   MATCH_R2_INITI, MASK_R2_INITI, 0, no_overflow},
+  {"insert", "t,s,j,k", "t,s,j,k,E", 4, 4, iw_F2X6L10_type,
+   MATCH_R2_INSERT, MASK_R2_INSERT, 0, no_overflow},
+  {"jmp", "s", "s,E", 1, 4, iw_F3X6_type,
+   MATCH_R2_JMP, MASK_R2_JMP, 0, no_overflow},
+  {"jmpi", "m", "m,E", 1, 4, iw_L26_type,
+   MATCH_R2_JMPI, MASK_R2_JMPI, 0, call_target_overflow},
+  {"jmpr.n", "s", "s,E", 1, 2, iw_F1X1_type,
+   MATCH_R2_JMPR_N, MASK_R2_JMPR_N, 0, no_overflow},
+  {"ldb", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_LDB, MASK_R2_LDB, 0, address_offset_overflow},
+  {"ldbio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_LDBIO, MASK_R2_LDBIO, 0, signed_immed12_overflow},
+  {"ldbu", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_LDBU, MASK_R2_LDBU, 0, address_offset_overflow},
+  {"ldbuio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_LDBUIO, MASK_R2_LDBUIO, 0, signed_immed12_overflow},
+  {"ldbu.n", "T,Y(S)", "T,Y(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_LDBU_N, MASK_R2_LDBU_N, 0, address_offset_overflow},
+  {"ldex", "d,(s)", "d,(s),E", 2, 4, iw_F3X6_type,
+   MATCH_R2_LDEX, MASK_R2_LDEX, 0, no_overflow},
+  {"ldh", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_LDH, MASK_R2_LDH, 0, address_offset_overflow},
+  {"ldhio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_LDHIO, MASK_R2_LDHIO, 0, signed_immed12_overflow},
+  {"ldhu", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_LDHU, MASK_R2_LDHU, 0, address_offset_overflow},
+  {"ldhuio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_LDHUIO, MASK_R2_LDHUIO, 0, signed_immed12_overflow},
+  {"ldhu.n", "T,X(S)", "T,X(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_LDHU_N, MASK_R2_LDHU_N, 0, address_offset_overflow},
+  {"ldsex", "d,(s)", "d,(s),E", 2, 4, iw_F3X6_type,
+   MATCH_R2_LDSEX, MASK_R2_LDSEX, 0, no_overflow},
+  {"ldw", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_LDW, MASK_R2_LDW, 0, address_offset_overflow},
+  {"ldwio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_LDWIO, MASK_R2_LDWIO, 0, signed_immed12_overflow},
+  {"ldwm", "R,B", "R,B,E", 2, 4, iw_F1X4L17_type,
+   MATCH_R2_LDWM, MASK_R2_LDWM, 0, no_overflow},
+  {"ldw.n", "T,W(S)", "T,W(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_LDW_N, MASK_R2_LDW_N, 0, address_offset_overflow},
+  {"ldwsp.n", "t,V(s)", "t,V(s),E", 3, 2, iw_F1I5_type,
+   MATCH_R2_LDWSP_N, MASK_R2_LDWSP_N, 0, address_offset_overflow},
+  {"merge", "t,s,j,k", "t,s,j,k,E", 4, 4, iw_F2X6L10_type,
+   MATCH_R2_MERGE, MASK_R2_MERGE, 0, no_overflow},
+  {"mov", "d,s", "d,s,E", 2, 4, iw_F3X6_type,
+   MATCH_R2_MOV, MASK_R2_MOV, NIOS2_INSN_MACRO_MOV, no_overflow},
+  {"mov.n", "d,s", "d,s,E", 2, 2, iw_F2_type,
+   MATCH_R2_MOV_N, MASK_R2_MOV_N, 0, no_overflow},
+  {"movi.n", "D,h", "D,h,E", 2, 2, iw_T1I7_type,
+   MATCH_R2_MOVI_N, MASK_R2_MOVI_N, 0, enumeration_overflow},
+  {"movhi", "t,u", "t,u,E", 2, 4, iw_F2I16_type,
+   MATCH_R2_MOVHI, MASK_R2_MOVHI,
+   NIOS2_INSN_MACRO_MOVI, unsigned_immed16_overflow},
+  {"movi", "t,i", "t,i,E", 2, 4, iw_F2I16_type,
+   MATCH_R2_MOVI, MASK_R2_MOVI, NIOS2_INSN_MACRO_MOVI, signed_immed16_overflow},
+  {"movia", "t,o", "t,o,E", 2, 4, iw_F2I16_type,
+   MATCH_R2_ORHI, MASK_R2_ORHI, NIOS2_INSN_MACRO_MOVIA, no_overflow},
+  {"movui", "t,u", "t,u,E", 2, 4, iw_F2I16_type,
+   MATCH_R2_MOVUI, MASK_R2_MOVUI,
+   NIOS2_INSN_MACRO_MOVI, unsigned_immed16_overflow},
+  {"mul", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_MUL, MASK_R2_MUL, 0, no_overflow},
+  {"muli", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_MULI, MASK_R2_MULI, 0, signed_immed16_overflow},
+  {"mulxss", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_MULXSS, MASK_R2_MULXSS, 0, no_overflow},
+  {"mulxsu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_MULXSU, MASK_R2_MULXSU, 0, no_overflow},
+  {"mulxuu", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_MULXUU, MASK_R2_MULXUU, 0, no_overflow},
+  /* The encoding of the neg.n operands is backwards, not
+     the interpretation -- the first operand is still the
+     destination and the second the source.  */
+  {"neg.n", "S,D", "S,D,E", 2, 2, iw_T2X3_type,
+   MATCH_R2_NEG_N, MASK_R2_NEG_N, 0, no_overflow},
+  {"nextpc", "d", "d,E", 1, 4, iw_F3X6_type,
+   MATCH_R2_NEXTPC, MASK_R2_NEXTPC, 0, no_overflow},
+  {"nop", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_NOP, MASK_R2_NOP, NIOS2_INSN_MACRO_MOV, no_overflow},
+  {"nop.n", "", "E", 0, 2, iw_F2_type,
+   MATCH_R2_NOP_N, MASK_R2_NOP_N, NIOS2_INSN_MACRO_MOV, no_overflow},
+  {"nor", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_NOR, MASK_R2_NOR, 0, no_overflow},
+  {"not.n", "D,S", "D,S,E", 2, 2, iw_T2X3_type,
+   MATCH_R2_NOT_N, MASK_R2_NOT_N, 0, no_overflow},
+  {"or", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_OR, MASK_R2_OR, 0, no_overflow},
+  {"orhi", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ORHI, MASK_R2_ORHI, 0, unsigned_immed16_overflow},
+  {"ori", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_ORI, MASK_R2_ORI, 0, unsigned_immed16_overflow},
+  {"or.n", "D,S,T", "D,S,T,E", 3, 2, iw_T2X3_type,
+   MATCH_R2_OR_N, MASK_R2_OR_N, 0, no_overflow},
+  {"pop.n", "R,W", "R,W,E", 2, 2, iw_L5I4X1_type,
+   MATCH_R2_POP_N, MASK_R2_POP_N, NIOS2_INSN_OPTARG, no_overflow},
+  {"push.n", "R,W", "R,W,E", 2, 2, iw_L5I4X1_type,
+   MATCH_R2_PUSH_N, MASK_R2_PUSH_N, NIOS2_INSN_OPTARG, no_overflow},
+  {"rdctl", "d,c", "d,c,E", 2, 4, iw_F3X6L5_type,
+   MATCH_R2_RDCTL, MASK_R2_RDCTL, 0, no_overflow},
+  {"rdprs", "t,s,I", "t,s,I,E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_RDPRS, MASK_R2_RDPRS, 0, signed_immed12_overflow},
+  {"ret", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_RET, MASK_R2_RET, 0, no_overflow},
+  {"ret.n", "", "E", 0, 2, iw_X2L5_type,
+   MATCH_R2_RET_N, MASK_R2_RET_N, 0, no_overflow},
+  {"rol", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_ROL, MASK_R2_ROL, 0, no_overflow},
+  {"roli", "d,s,j", "d,s,j,E", 3, 4, iw_F3X6L5_type,
+   MATCH_R2_ROLI, MASK_R2_ROLI, 0, unsigned_immed5_overflow},
+  {"ror", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_ROR, MASK_R2_ROR, 0, no_overflow},
+  {"sll", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_SLL, MASK_R2_SLL, 0, no_overflow},
+  {"slli", "d,s,j", "d,s,j,E", 3, 4, iw_F3X6L5_type,
+   MATCH_R2_SLLI, MASK_R2_SLLI, 0, unsigned_immed5_overflow},
+  {"sll.n", "D,S,T", "D,S,T,E", 3, 2, iw_T2X3_type,
+   MATCH_R2_SLL_N, MASK_R2_SLL_N, 0, no_overflow},
+  {"slli.n", "D,S,f", "D,S,f,E", 3, 2, iw_T2X1L3_type,
+   MATCH_R2_SLLI_N, MASK_R2_SLLI_N, 0, enumeration_overflow},
+  {"spaddi.n", "D,U", "D,U,E", 2, 2, iw_T1I7_type,
+   MATCH_R2_SPADDI_N, MASK_R2_SPADDI_N, 0, address_offset_overflow},
+  {"spdeci.n", "U", "U,E", 1, 2, iw_X1I7_type,
+   MATCH_R2_SPDECI_N, MASK_R2_SPDECI_N, 0, address_offset_overflow},
+  {"spinci.n", "U", "U,E", 1, 2, iw_X1I7_type,
+   MATCH_R2_SPINCI_N, MASK_R2_SPINCI_N, 0, address_offset_overflow},
+  {"sra", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_SRA, MASK_R2_SRA, 0, no_overflow},
+  {"srai", "d,s,j", "d,s,j,E", 3, 4, iw_F3X6L5_type,
+   MATCH_R2_SRAI, MASK_R2_SRAI, 0, unsigned_immed5_overflow},
+  {"srl", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_SRL, MASK_R2_SRL, 0, no_overflow},
+  {"srli", "d,s,j", "d,s,j,E", 3, 4, iw_F3X6L5_type,
+   MATCH_R2_SRLI, MASK_R2_SRLI, 0, unsigned_immed5_overflow},
+  {"srl.n", "D,S,T", "D,S,T,E", 3, 2, iw_T2X3_type,
+   MATCH_R2_SRL_N, MASK_R2_SRL_N, 0, no_overflow},
+  {"srli.n", "D,S,f", "D,S,f,E", 3, 2, iw_T2X1L3_type,
+   MATCH_R2_SRLI_N, MASK_R2_SRLI_N, 0, enumeration_overflow},
+  {"stb", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_STB, MASK_R2_STB, 0, address_offset_overflow},
+  {"stbio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_STBIO, MASK_R2_STBIO, 0, signed_immed12_overflow},
+  {"stb.n", "T,Y(S)", "T,Y(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_STB_N, MASK_R2_STB_N, 0, address_offset_overflow},
+  {"stbz.n", "t,M(S)", "t,M(S),E", 3, 2, iw_T1X1I6_type,
+   MATCH_R2_STBZ_N, MASK_R2_STBZ_N, 0, address_offset_overflow},
+  {"stex", "d,t,(s)", "d,t,(s),E", 3, 4, iw_F3X6_type,
+   MATCH_R2_STEX, MASK_R2_STEX, 0, no_overflow},
+  {"sth", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_STH, MASK_R2_STH, 0, address_offset_overflow},
+  {"sthio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_STHIO, MASK_R2_STHIO, 0, signed_immed12_overflow},
+  {"sth.n", "T,X(S)", "T,X(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_STH_N, MASK_R2_STH_N, 0, address_offset_overflow},
+  {"stsex", "d,t,(s)", "d,t,(s),E", 3, 4, iw_F3X6_type,
+   MATCH_R2_STSEX, MASK_R2_STSEX, 0, no_overflow},
+  {"stw", "t,i(s)", "t,i(s),E", 3, 4, iw_F2I16_type,
+   MATCH_R2_STW, MASK_R2_STW, 0, address_offset_overflow},
+  {"stwio", "t,I(s)", "t,I(s),E", 3, 4, iw_F2X4I12_type,
+   MATCH_R2_STWIO, MASK_R2_STWIO, 0, signed_immed12_overflow},
+  {"stwm", "R,B", "R,B,E", 2, 4, iw_F1X4L17_type,
+   MATCH_R2_STWM, MASK_R2_STWM, 0, no_overflow},
+  {"stwsp.n", "t,V(s)", "t,V(s),E", 3, 2, iw_F1I5_type,
+   MATCH_R2_STWSP_N, MASK_R2_STWSP_N, 0, address_offset_overflow},
+  {"stw.n", "T,W(S)", "T,W(S),E", 3, 2, iw_T2I4_type,
+   MATCH_R2_STW_N, MASK_R2_STW_N, 0, address_offset_overflow},
+  {"stwz.n", "t,N(S)", "t,N(S),E", 3, 2, iw_T1X1I6_type,
+   MATCH_R2_STWZ_N, MASK_R2_STWZ_N, 0, address_offset_overflow},
+  {"sub", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_SUB, MASK_R2_SUB, 0, no_overflow},
+  {"subi", "t,s,i", "t,s,i,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_SUBI, MASK_R2_SUBI, NIOS2_INSN_MACRO, signed_immed16_overflow},
+  {"sub.n", "D,S,T", "D,S,T,E", 3, 2, iw_T3X1_type,
+   MATCH_R2_SUB_N, MASK_R2_SUB_N, 0, no_overflow},
+  {"subi.n", "D,S,e", "D,S,e,E", 3, 2, iw_T2X1I3_type,
+   MATCH_R2_SUBI_N, MASK_R2_SUBI_N, 0, enumeration_overflow},
+  {"sync", "", "E", 0, 4, iw_F3X6_type,
+   MATCH_R2_SYNC, MASK_R2_SYNC, 0, no_overflow},
+  {"trap", "j", "j,E", 1, 4, iw_F3X6L5_type,
+   MATCH_R2_TRAP, MASK_R2_TRAP, NIOS2_INSN_OPTARG, no_overflow},
+  {"trap.n", "j", "j,E", 1, 2, iw_X2L5_type,
+   MATCH_R2_TRAP_N, MASK_R2_TRAP_N, NIOS2_INSN_OPTARG, no_overflow},
+  {"wrctl", "c,s", "c,s,E", 2, 4, iw_F3X6L5_type,
+   MATCH_R2_WRCTL, MASK_R2_WRCTL, 0, no_overflow},
+  {"wrpie", "d,s", "d,s,E", 2, 4, iw_F3X6L5_type,
+   MATCH_R2_WRPIE, MASK_R2_WRPIE, 0, no_overflow},
+  {"wrprs", "d,s", "d,s,E", 2, 4, iw_F3X6_type,
+   MATCH_R2_WRPRS, MASK_R2_WRPRS, 0, no_overflow},
+  {"xor", "d,s,t", "d,s,t,E", 3, 4, iw_F3X6_type,
+   MATCH_R2_XOR, MASK_R2_XOR, 0, no_overflow},
+  {"xorhi", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_XORHI, MASK_R2_XORHI, 0, unsigned_immed16_overflow},
+  {"xori", "t,s,u", "t,s,u,E", 3, 4, iw_F2I16_type,
+   MATCH_R2_XORI, MASK_R2_XORI, 0, unsigned_immed16_overflow},
+  {"xor.n", "D,S,T", "D,S,T,E", 3, 2, iw_T2X3_type,
+   MATCH_R2_XOR_N, MASK_R2_XOR_N, 0, no_overflow},
+};
+
+#define NIOS2_NUM_R2_OPCODES \
+       ((sizeof nios2_r2_opcodes) / (sizeof (nios2_r2_opcodes[0])))
+const int nios2_num_r2_opcodes = NIOS2_NUM_R2_OPCODES;
+
+/* Default to using the R1 instruction tables.  */
+struct nios2_opcode *nios2_opcodes = (struct nios2_opcode *) nios2_r1_opcodes;
+int nios2_num_opcodes = NIOS2_NUM_R1_OPCODES;
+#undef NIOS2_NUM_R1_OPCODES
+#undef NIOS2_NUM_R2_OPCODES
+
+/* Decodings for R2 asi.n (addi.n/subi.n) immediate values.  */
+unsigned int nios2_r2_asi_n_mappings[] =
+  {1, 2, 4, 8, 16, 32, 64, 128};
+const int nios2_num_r2_asi_n_mappings = 8;
+
+/* Decodings for R2 shi.n (slli.n/srli.n) immediate values.  */
+unsigned int nios2_r2_shi_n_mappings[] =
+  {1, 2, 3, 8, 12, 16, 24, 31};
+const int nios2_num_r2_shi_n_mappings = 8;
+
+/* Decodings for R2 andi.n immediate values.  */
+unsigned int nios2_r2_andi_n_mappings[] =
+  {1, 2, 3, 4, 8, 0xf, 0x10, 0x1f,
+   0x20, 0x3f, 0x7f, 0x80, 0xff, 0x7ff, 0xff00, 0xffff};
+const int nios2_num_r2_andi_n_mappings = 16;
+
+/* Decodings for R2 3-bit register fields.  */
+int nios2_r2_reg3_mappings[] =
+  {16, 17, 2, 3, 4, 5, 6, 7};
+const int nios2_num_r2_reg3_mappings = 8;
+
+/* Decodings for R2 push.n/pop.n REG_RANGE value list.  */
+unsigned long nios2_r2_reg_range_mappings[] = {
+  0x00010000,
+  0x00030000,
+  0x00070000,
+  0x000f0000,
+  0x001f0000,
+  0x003f0000,
+  0x007f0000,
+  0x00ff0000
+};
+const int nios2_num_r2_reg_range_mappings = 8;
+/* Altera Nios II disassemble routines
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+   Contributed by Nigel Gray (ngray@altera.com).
+   Contributed by Mentor Graphics, Inc.
+
+   This file is part of the GNU opcodes library.
+
+   This library 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 3, or (at your option)
+   any later version.
+
+   It 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 file; see the file COPYING.  If not, write to the
+   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+/*
+#include "sysdep.h"
+#include "dis-asm.h"
+#include "opcode/nios2.h"
+#include "libiberty.h"
+#include <string.h>
+#include <assert.h>
+*/
+/* No symbol table is available when this code runs out in an embedded
+   system as when it is used for disassembler support in a monitor.  */
+#if !defined(EMBEDDED_ENV)
+#define SYMTAB_AVAILABLE 1
+/*
+#include "elf-bfd.h"
+#include "elf/nios2.h"
+*/
+#endif
+
+/* Default length of Nios II instruction in bytes.  */
+#define INSNLEN 4
+
+/* Data structures used by the opcode hash table.  */
+typedef struct _nios2_opcode_hash
+{
+  const struct nios2_opcode *opcode;
+  struct _nios2_opcode_hash *next;
+} nios2_opcode_hash;
+
+/* Hash table size.  */
+#define OPCODE_HASH_SIZE (IW_R1_OP_UNSHIFTED_MASK + 1)
+
+/* Extract the opcode from an instruction word.  */
+static unsigned int
+nios2_r1_extract_opcode (unsigned int x)
+{
+  return GET_IW_R1_OP (x);
+}
+
+static unsigned int
+nios2_r2_extract_opcode (unsigned int x)
+{
+  return GET_IW_R2_OP (x);
+}
+
+/* We maintain separate hash tables for R1 and R2 opcodes, and pseudo-ops
+   are stored in a different table than regular instructions.  */
+
+typedef struct _nios2_disassembler_state
+{
+  const struct nios2_opcode *opcodes;
+  const int *num_opcodes;
+  unsigned int (*extract_opcode) (unsigned int);
+  nios2_opcode_hash *hash[OPCODE_HASH_SIZE];
+  nios2_opcode_hash *ps_hash[OPCODE_HASH_SIZE];
+  const struct nios2_opcode *nop;
+  bfd_boolean init;
+} nios2_disassembler_state;
+
+static nios2_disassembler_state
+nios2_r1_disassembler_state = {
+  nios2_r1_opcodes,
+  &nios2_num_r1_opcodes,
+  nios2_r1_extract_opcode,
+  {},
+  {},
+  NULL,
+  0
+};
+
+static nios2_disassembler_state
+nios2_r2_disassembler_state = {
+  nios2_r2_opcodes,
+  &nios2_num_r2_opcodes,
+  nios2_r2_extract_opcode,
+  {},
+  {},
+  NULL,
+  0
+};
+
+/* Function to initialize the opcode hash table.  */
+static void
+nios2_init_opcode_hash (nios2_disassembler_state *state)
+{
+  unsigned int i;
+  register const struct nios2_opcode *op;
+
+  for (i = 0; i < OPCODE_HASH_SIZE; i++)
+    for (op = state->opcodes; op < &state->opcodes[*(state->num_opcodes)]; op++)
+      {
+	nios2_opcode_hash *new_hash;
+	nios2_opcode_hash **bucket = NULL;
+
+	if ((op->pinfo & NIOS2_INSN_MACRO) == NIOS2_INSN_MACRO)
+	  {
+	    if (i == state->extract_opcode (op->match)
+		&& (op->pinfo & (NIOS2_INSN_MACRO_MOV | NIOS2_INSN_MACRO_MOVI)
+		    & 0x7fffffff))
+	      {
+		bucket = &(state->ps_hash[i]);
+		if (strcmp (op->name, "nop") == 0)
+		  state->nop = op;
+	      }
+	  }
+	else if (i == state->extract_opcode (op->match))
+	  bucket = &(state->hash[i]);
+
+	if (bucket)
+	  {
+	    new_hash =
+	      (nios2_opcode_hash *) malloc (sizeof (nios2_opcode_hash));
+	    if (new_hash == NULL)
+	      {
+		fprintf (stderr,
+			 "error allocating memory...broken disassembler\n");
+		abort ();
+	      }
+	    new_hash->opcode = op;
+	    new_hash->next = NULL;
+	    while (*bucket)
+	      bucket = &((*bucket)->next);
+	    *bucket = new_hash;
+	  }
+      }
+  state->init = 1;
+
+#ifdef DEBUG_HASHTABLE
+  for (i = 0; i < OPCODE_HASH_SIZE; ++i)
+    {
+      nios2_opcode_hash *tmp_hash = state->hash[i];
+      printf ("index: 0x%02X	ops: ", i);
+      while (tmp_hash != NULL)
+	{
+	  printf ("%s ", tmp_hash->opcode->name);
+	  tmp_hash = tmp_hash->next;
+	}
+      printf ("\n");
+    }
+
+  for (i = 0; i < OPCODE_HASH_SIZE; ++i)
+    {
+      nios2_opcode_hash *tmp_hash = state->ps_hash[i];
+      printf ("index: 0x%02X	ops: ", i);
+      while (tmp_hash != NULL)
+	{
+	  printf ("%s ", tmp_hash->opcode->name);
+	  tmp_hash = tmp_hash->next;
+	}
+      printf ("\n");
+    }
+#endif /* DEBUG_HASHTABLE */
+}
+
+/* Return a pointer to an nios2_opcode struct for a given instruction
+   word OPCODE for bfd machine MACH, or NULL if there is an error.  */
+const struct nios2_opcode *
+nios2_find_opcode_hash (unsigned long opcode, unsigned long mach)
+{
+  nios2_opcode_hash *entry;
+  nios2_disassembler_state *state;
+
+  /* Select the right instruction set, hash tables, and opcode accessor
+     for the mach variant.  */
+  if (mach == bfd_mach_nios2r2)
+    state = &nios2_r2_disassembler_state;
+  else
+    state = &nios2_r1_disassembler_state;
+
+  /* Build a hash table to shorten the search time.  */
+  if (!state->init)
+    nios2_init_opcode_hash (state);
+
+  /* Check for NOP first.  Both NOP and MOV are macros that expand into
+     an ADD instruction, and we always want to give priority to NOP.  */
+  if (state->nop->match == (opcode & state->nop->mask))
+    return state->nop;
+
+  /* First look in the pseudo-op hashtable.  */
+  for (entry = state->ps_hash[state->extract_opcode (opcode)];
+       entry; entry = entry->next)
+    if (entry->opcode->match == (opcode & entry->opcode->mask))
+      return entry->opcode;
+
+  /* Otherwise look in the main hashtable.  */
+  for (entry = state->hash[state->extract_opcode (opcode)];
+       entry; entry = entry->next)
+    if (entry->opcode->match == (opcode & entry->opcode->mask))
+      return entry->opcode;
+
+  return NULL;
+}
+
+/* There are 32 regular registers, 32 coprocessor registers,
+   and 32 control registers.  */
+#define NUMREGNAMES 32
+
+/* Return a pointer to the base of the coprocessor register name array.  */
+static struct nios2_reg *
+nios2_coprocessor_regs (void)
+{
+  static struct nios2_reg *cached = NULL;
+
+  if (!cached)
+    {
+      int i;
+      for (i = NUMREGNAMES; i < nios2_num_regs; i++)
+	if (!strcmp (nios2_regs[i].name, "c0"))
+	  {
+	    cached = nios2_regs + i;
+	    break;
+	  }
+      assert (cached);
+    }
+  return cached;
+}
+
+/* Return a pointer to the base of the control register name array.  */
+static struct nios2_reg *
+nios2_control_regs (void)
+{
+  static struct nios2_reg *cached = NULL;
+
+  if (!cached)
+    {
+      int i;
+      for (i = NUMREGNAMES; i < nios2_num_regs; i++)
+	if (!strcmp (nios2_regs[i].name, "status"))
+	  {
+	    cached = nios2_regs + i;
+	    break;
+	  }
+      assert (cached);
+    }
+  return cached;
+}
+
+/* Helper routine to report internal errors.  */
+static void
+bad_opcode (const struct nios2_opcode *op)
+{
+  fprintf (stderr, "Internal error: broken opcode descriptor for `%s %s'\n",
+	   op->name, op->args);
+  abort ();
+}
+
+/* The function nios2_print_insn_arg uses the character pointed
+   to by ARGPTR to determine how it print the next token or separator
+   character in the arguments to an instruction.  */
+static int
+nios2_print_insn_arg (const char *argptr,
+		      unsigned long opcode, bfd_vma address,
+		      disassemble_info *info,
+		      const struct nios2_opcode *op)
+{
+  unsigned long i = 0;
+  struct nios2_reg *reg_base;
+
+  switch (*argptr)
+    {
+    case ',':
+    case '(':
+    case ')':
+      (*info->fprintf_func) (info->stream, "%c", *argptr);
+      break;
+
+    case 'c':
+      /* Control register index.  */
+      switch (op->format)
+	{
+	case iw_r_type:
+	  i = GET_IW_R_IMM5 (opcode);
+	  break;
+	case iw_F3X6L5_type:
+	  i = GET_IW_F3X6L5_IMM5 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      reg_base = nios2_control_regs ();
+      (*info->fprintf_func) (info->stream, "%s", reg_base[i].name);
+      break;
+
+    case 'd':
+      reg_base = nios2_regs;
+      switch (op->format)
+	{
+	case iw_r_type:
+	  i = GET_IW_R_C (opcode);
+	  break;
+	case iw_custom_type:
+	  i = GET_IW_CUSTOM_C (opcode);
+	  if (GET_IW_CUSTOM_READC (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F3X6L5_type:
+	case iw_F3X6_type:
+	  i = GET_IW_F3X6L5_C (opcode);
+	  break;
+	case iw_F3X8_type:
+	  i = GET_IW_F3X8_C (opcode);
+	  if (GET_IW_F3X8_READC (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F2_type:
+	  i = GET_IW_F2_B (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      if (i < NUMREGNAMES)
+	(*info->fprintf_func) (info->stream, "%s", reg_base[i].name);
+      else
+	(*info->fprintf_func) (info->stream, "unknown");
+      break;
+
+    case 's':
+      reg_base = nios2_regs;
+      switch (op->format)
+	{
+	case iw_r_type:
+	  i = GET_IW_R_A (opcode);
+	  break;
+	case iw_i_type:
+	  i = GET_IW_I_A (opcode);
+	  break;
+	case iw_custom_type:
+	  i = GET_IW_CUSTOM_A (opcode);
+	  if (GET_IW_CUSTOM_READA (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F2I16_type:
+	  i = GET_IW_F2I16_A (opcode);
+	  break;
+	case iw_F2X4I12_type:
+	  i = GET_IW_F2X4I12_A (opcode);
+	  break;
+	case iw_F1X4I12_type:
+	  i = GET_IW_F1X4I12_A (opcode);
+	  break;
+	case iw_F1X4L17_type:
+	  i = GET_IW_F1X4L17_A (opcode);
+	  break;
+	case iw_F3X6L5_type:
+	case iw_F3X6_type:
+	  i = GET_IW_F3X6L5_A (opcode);
+	  break;
+	case iw_F2X6L10_type:
+	  i = GET_IW_F2X6L10_A (opcode);
+	  break;
+	case iw_F3X8_type:
+	  i = GET_IW_F3X8_A (opcode);
+	  if (GET_IW_F3X8_READA (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F1X1_type:
+	  i = GET_IW_F1X1_A (opcode);
+	  break;
+	case iw_F1I5_type:
+	  i = 27;   /* Implicit stack pointer reference.  */
+	  break;
+	case iw_F2_type:
+	  i = GET_IW_F2_A (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      if (i < NUMREGNAMES)
+	(*info->fprintf_func) (info->stream, "%s", reg_base[i].name);
+      else
+	(*info->fprintf_func) (info->stream, "unknown");
+      break;
+
+    case 't':
+      reg_base = nios2_regs;
+      switch (op->format)
+	{
+	case iw_r_type:
+	  i = GET_IW_R_B (opcode);
+	  break;
+	case iw_i_type:
+	  i = GET_IW_I_B (opcode);
+	  break;
+	case iw_custom_type:
+	  i = GET_IW_CUSTOM_B (opcode);
+	  if (GET_IW_CUSTOM_READB (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F2I16_type:
+	  i = GET_IW_F2I16_B (opcode);
+	  break;
+	case iw_F2X4I12_type:
+	  i = GET_IW_F2X4I12_B (opcode);
+	  break;
+	case iw_F3X6L5_type:
+	case iw_F3X6_type:
+	  i = GET_IW_F3X6L5_B (opcode);
+	  break;
+	case iw_F2X6L10_type:
+	  i = GET_IW_F2X6L10_B (opcode);
+	  break;
+	case iw_F3X8_type:
+	  i = GET_IW_F3X8_B (opcode);
+	  if (GET_IW_F3X8_READB (opcode) == 0)
+	    reg_base = nios2_coprocessor_regs ();
+	  break;
+	case iw_F1I5_type:
+	  i = GET_IW_F1I5_B (opcode);
+	  break;
+	case iw_F2_type:
+	  i = GET_IW_F2_B (opcode);
+	  break;
+	case iw_T1X1I6_type:
+	  i = 0;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      if (i < NUMREGNAMES)
+	(*info->fprintf_func) (info->stream, "%s", reg_base[i].name);
+      else
+	(*info->fprintf_func) (info->stream, "unknown");
+      break;
+
+    case 'D':
+      switch (op->format)
+	{
+	case iw_T1I7_type:
+	  i = GET_IW_T1I7_A3 (opcode);
+	  break;
+	case iw_T2X1L3_type:
+	  i = GET_IW_T2X1L3_B3 (opcode);
+	  break;
+	case iw_T2X1I3_type:
+	  i = GET_IW_T2X1I3_B3 (opcode);
+	  break;
+	case iw_T3X1_type:
+	  i = GET_IW_T3X1_C3 (opcode);
+	  break;
+	case iw_T2X3_type:
+	  if (op->num_args == 3)
+	    i = GET_IW_T2X3_A3 (opcode);
+	  else
+	    i = GET_IW_T2X3_B3 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      i = nios2_r2_reg3_mappings[i];
+      (*info->fprintf_func) (info->stream, "%s", nios2_regs[i].name);
+      break;
+
+    case 'M':
+      /* 6-bit unsigned immediate with no shift.  */
+      switch (op->format)
+	{
+	case iw_T1X1I6_type:
+	  i = GET_IW_T1X1I6_IMM6 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'N':
+      /* 6-bit unsigned immediate with 2-bit shift.  */
+      switch (op->format)
+	{
+	case iw_T1X1I6_type:
+	  i = GET_IW_T1X1I6_IMM6 (opcode) << 2;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'S':
+      switch (op->format)
+	{
+	case iw_T1I7_type:
+	  i = GET_IW_T1I7_A3 (opcode);
+	  break;
+	case iw_T2I4_type:
+	  i = GET_IW_T2I4_A3 (opcode);
+	  break;
+	case iw_T2X1L3_type:
+	  i = GET_IW_T2X1L3_A3 (opcode);
+	  break;
+	case iw_T2X1I3_type:
+	  i = GET_IW_T2X1I3_A3 (opcode);
+	  break;
+	case iw_T3X1_type:
+	  i = GET_IW_T3X1_A3 (opcode);
+	  break;
+	case iw_T2X3_type:
+	  i = GET_IW_T2X3_A3 (opcode);
+	  break;
+	case iw_T1X1I6_type:
+	  i = GET_IW_T1X1I6_A3 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      i = nios2_r2_reg3_mappings[i];
+      (*info->fprintf_func) (info->stream, "%s", nios2_regs[i].name);
+      break;
+
+    case 'T':
+      switch (op->format)
+	{
+	case iw_T2I4_type:
+	  i = GET_IW_T2I4_B3 (opcode);
+	  break;
+	case iw_T3X1_type:
+	  i = GET_IW_T3X1_B3 (opcode);
+	  break;
+	case iw_T2X3_type:
+	  i = GET_IW_T2X3_B3 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      i = nios2_r2_reg3_mappings[i];
+      (*info->fprintf_func) (info->stream, "%s", nios2_regs[i].name);
+      break;
+
+    case 'i':
+      /* 16-bit signed immediate.  */
+      switch (op->format)
+	{
+	case iw_i_type:
+	  i = (signed) (GET_IW_I_IMM16 (opcode) << 16) >> 16;
+	  break;
+	case iw_F2I16_type:
+	  i = (signed) (GET_IW_F2I16_IMM16 (opcode) << 16) >> 16;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'I':
+      /* 12-bit signed immediate.  */
+      switch (op->format)
+	{
+	case iw_F2X4I12_type:
+	  i = (signed) (GET_IW_F2X4I12_IMM12 (opcode) << 20) >> 20;
+	  break;
+	case iw_F1X4I12_type:
+	  i = (signed) (GET_IW_F1X4I12_IMM12 (opcode) << 20) >> 20;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'u':
+      /* 16-bit unsigned immediate.  */
+      switch (op->format)
+	{
+	case iw_i_type:
+	  i = GET_IW_I_IMM16 (opcode);
+	  break;
+	case iw_F2I16_type:
+	  i = GET_IW_F2I16_IMM16 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'U':
+      /* 7-bit unsigned immediate with 2-bit shift.  */
+      switch (op->format)
+	{
+	case iw_T1I7_type:
+	  i = GET_IW_T1I7_IMM7 (opcode) << 2;
+	  break;
+	case iw_X1I7_type:
+	  i = GET_IW_X1I7_IMM7 (opcode) << 2;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'V':
+      /* 5-bit unsigned immediate with 2-bit shift.  */
+      switch (op->format)
+	{
+	case iw_F1I5_type:
+	  i = GET_IW_F1I5_IMM5 (opcode) << 2;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'W':
+      /* 4-bit unsigned immediate with 2-bit shift.  */
+      switch (op->format)
+	{
+	case iw_T2I4_type:
+	  i = GET_IW_T2I4_IMM4 (opcode) << 2;
+	  break;
+	case iw_L5I4X1_type:
+	  i = GET_IW_L5I4X1_IMM4 (opcode) << 2;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'X':
+      /* 4-bit unsigned immediate with 1-bit shift.  */
+      switch (op->format)
+	{
+	case iw_T2I4_type:
+	  i = GET_IW_T2I4_IMM4 (opcode) << 1;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'Y':
+      /* 4-bit unsigned immediate without shift.  */
+      switch (op->format)
+	{
+	case iw_T2I4_type:
+	  i = GET_IW_T2I4_IMM4 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'o':
+      /* 16-bit signed immediate address offset.  */
+      switch (op->format)
+	{
+	case iw_i_type:
+	  i = (signed) (GET_IW_I_IMM16 (opcode) << 16) >> 16;
+	  break;
+	case iw_F2I16_type:
+	  i = (signed) (GET_IW_F2I16_IMM16 (opcode) << 16) >> 16;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      address = address + 4 + i;
+      (*info->print_address_func) (address, info);
+      break;
+
+    case 'O':
+      /* 10-bit signed address offset with 1-bit shift.  */
+      switch (op->format)
+	{
+	case iw_I10_type:
+	  i = (signed) (GET_IW_I10_IMM10 (opcode) << 22) >> 21;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      address = address + 2 + i;
+      (*info->print_address_func) (address, info);
+      break;
+
+    case 'P':
+      /* 7-bit signed address offset with 1-bit shift.  */
+      switch (op->format)
+	{
+	case iw_T1I7_type:
+	  i = (signed) (GET_IW_T1I7_IMM7 (opcode) << 25) >> 24;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      address = address + 2 + i;
+      (*info->print_address_func) (address, info);
+      break;
+
+    case 'j':
+      /* 5-bit unsigned immediate.  */
+      switch (op->format)
+	{
+	case iw_r_type:
+	  i = GET_IW_R_IMM5 (opcode);
+	  break;
+	case iw_F3X6L5_type:
+	  i = GET_IW_F3X6L5_IMM5 (opcode);
+	  break;
+	case iw_F2X6L10_type:
+	  i = GET_IW_F2X6L10_MSB (opcode);
+	  break;
+	case iw_X2L5_type:
+	  i = GET_IW_X2L5_IMM5 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'k':
+      /* Second 5-bit unsigned immediate field.  */
+      switch (op->format)
+	{
+	case iw_F2X6L10_type:
+	  i = GET_IW_F2X6L10_LSB (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'l':
+      /* 8-bit unsigned immediate.  */
+      switch (op->format)
+	{
+	case iw_custom_type:
+	  i = GET_IW_CUSTOM_N (opcode);
+	  break;
+	case iw_F3X8_type:
+	  i = GET_IW_F3X8_N (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%lu", i);
+      break;
+
+    case 'm':
+      /* 26-bit unsigned immediate.  */
+      switch (op->format)
+	{
+	case iw_j_type:
+	  i = GET_IW_J_IMM26 (opcode);
+	  break;
+	case iw_L26_type:
+	  i = GET_IW_L26_IMM26 (opcode);
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      /* This translates to an address because it's only used in call
+	 instructions.  */
+      address = (address & 0xf0000000) | (i << 2);
+      (*info->print_address_func) (address, info);
+      break;
+
+    case 'e':
+      /* Encoded enumeration for addi.n/subi.n.  */
+      switch (op->format)
+	{
+	case iw_T2X1I3_type:
+	  i = nios2_r2_asi_n_mappings[GET_IW_T2X1I3_IMM3 (opcode)];
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%lu", i);
+      break;
+
+    case 'f':
+      /* Encoded enumeration for slli.n/srli.n.  */
+      switch (op->format)
+	{
+	case iw_T2X1L3_type:
+	  i = nios2_r2_shi_n_mappings[GET_IW_T2X1I3_IMM3 (opcode)];
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%lu", i);
+      break;
+
+    case 'g':
+      /* Encoded enumeration for andi.n.  */
+      switch (op->format)
+	{
+	case iw_T2I4_type:
+	  i = nios2_r2_andi_n_mappings[GET_IW_T2I4_IMM4 (opcode)];
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%lu", i);
+      break;
+
+    case 'h':
+      /* Encoded enumeration for movi.n.  */
+      switch (op->format)
+	{
+	case iw_T1I7_type:
+	  i = GET_IW_T1I7_IMM7 (opcode);
+	  if (i == 125)
+	    i = 0xff;
+	  else if (i == 126)
+	    i = -2;
+	  else if (i == 127)
+	    i = -1;
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      (*info->fprintf_func) (info->stream, "%ld", i);
+      break;
+
+    case 'R':
+      {
+	unsigned long reglist = 0;
+	int dir = 1;
+	int k, t;
+
+	switch (op->format)
+	  {
+	  case iw_F1X4L17_type:
+	    /* Encoding for ldwm/stwm.  */
+	    i = GET_IW_F1X4L17_REGMASK (opcode);
+	    if (GET_IW_F1X4L17_RS (opcode))
+	      {
+		reglist = ((i << 14) & 0x00ffc000);
+		if (i & (1 << 10))
+		  reglist |= (1 << 28);
+		if (i & (1 << 11))
+		  reglist |= (1 << 31);
+	      }
+	    else
+	      reglist = i << 2;
+	    dir = GET_IW_F1X4L17_REGMASK (opcode) ? 1 : -1;
+	    break;
+
+	  case iw_L5I4X1_type:
+	    /* Encoding for push.n/pop.n.  */
+	    reglist |= (1 << 31);
+	    if (GET_IW_L5I4X1_FP (opcode))
+	      reglist |= (1 << 28);
+	    if (GET_IW_L5I4X1_CS (opcode))
+	      {
+		int val = GET_IW_L5I4X1_REGRANGE (opcode);
+		reglist |= nios2_r2_reg_range_mappings[val];
+	      }
+	    dir = (op->match == MATCH_R2_POP_N ? 1 : -1);
+	    break;
+
+	  default:
+	    bad_opcode (op);
+	  }
+
+	t = 0;
+	(*info->fprintf_func) (info->stream, "{");
+	for (k = (dir == 1 ? 0 : 31);
+	     (dir == 1 && k < 32) || (dir == -1 && k >= 0);
+	     k += dir)
+	  if (reglist & (1 << k))
+	    {
+	      if (t)
+		(*info->fprintf_func) (info->stream, ",");
+	      else
+		t++;
+	      (*info->fprintf_func) (info->stream, "%s", nios2_regs[k].name);
+	    }
+	(*info->fprintf_func) (info->stream, "}");
+	break;
+      }
+
+    case 'B':
+      /* Base register and options for ldwm/stwm.  */
+      switch (op->format)
+	{
+	case iw_F1X4L17_type:
+	  if (GET_IW_F1X4L17_ID (opcode) == 0)
+	    (*info->fprintf_func) (info->stream, "--");
+
+	  i = GET_IW_F1X4I12_A (opcode);
+	  (*info->fprintf_func) (info->stream, "(%s)",
+				 nios2_builtin_regs[i].name);
+
+	  if (GET_IW_F1X4L17_ID (opcode))
+	    (*info->fprintf_func) (info->stream, "++");
+	  if (GET_IW_F1X4L17_WB (opcode))
+	    (*info->fprintf_func) (info->stream, ",writeback");
+	  if (GET_IW_F1X4L17_PC (opcode))
+	    (*info->fprintf_func) (info->stream, ",ret");
+	  break;
+	default:
+	  bad_opcode (op);
+	}
+      break;
+
+    default:
+      (*info->fprintf_func) (info->stream, "unknown");
+      break;
+    }
+  return 0;
+}
+
+/* nios2_disassemble does all the work of disassembling a Nios II
+   instruction opcode.  */
+static int
+nios2_disassemble (bfd_vma address, unsigned long opcode,
+		   disassemble_info *info)
+{
+  const struct nios2_opcode *op;
+
+  info->bytes_per_line = INSNLEN;
+  info->bytes_per_chunk = INSNLEN;
+  info->display_endian = info->endian;
+  info->insn_info_valid = 1;
+  info->branch_delay_insns = 0;
+  info->data_size = 0;
+  info->insn_type = dis_nonbranch;
+  info->target = 0;
+  info->target2 = 0;
+
+  /* Find the major opcode and use this to disassemble
+     the instruction and its arguments.  */
+  op = nios2_find_opcode_hash (opcode, info->mach);
+
+  if (op != NULL)
+    {
+      const char *argstr = op->args;
+      (*info->fprintf_func) (info->stream, "%s", op->name);
+      if (argstr != NULL && *argstr != '\0')
+	{
+	  (*info->fprintf_func) (info->stream, "\t");
+	  while (*argstr != '\0')
+	    {
+	      nios2_print_insn_arg (argstr, opcode, address, info, op);
+	      ++argstr;
+	    }
+	}
+      /* Tell the caller how far to advance the program counter.  */
+      info->bytes_per_chunk = op->size;
+      return op->size;
+    }
+  else
+    {
+      /* Handle undefined instructions.  */
+      info->insn_type = dis_noninsn;
+      (*info->fprintf_func) (info->stream, "0x%lx", opcode);
+      return INSNLEN;
+    }
+}
+
+
+/* print_insn_nios2 is the main disassemble function for Nios II.
+   The function diassembler(abfd) (source in disassemble.c) returns a
+   pointer to this either print_insn_big_nios2 or
+   print_insn_little_nios2, which in turn call this function when the
+   bfd machine type is Nios II. print_insn_nios2 reads the
+   instruction word at the address given, and prints the disassembled
+   instruction on the stream info->stream using info->fprintf_func. */
+
+static int
+print_insn_nios2 (bfd_vma address, disassemble_info *info,
+		  enum bfd_endian endianness)
+{
+  bfd_byte buffer[INSNLEN];
+  int status;
+
+  status = (*info->read_memory_func) (address, buffer, INSNLEN, info);
+  if (status == 0)
+    {
+      unsigned long insn;
+      if (endianness == BFD_ENDIAN_BIG)
+	insn = (unsigned long) bfd_getb32 (buffer);
+      else
+	insn = (unsigned long) bfd_getl32 (buffer);
+      return nios2_disassemble (address, insn, info);
+    }
+
+  /* We might have a 16-bit R2 instruction at the end of memory.  Try that.  */
+  if (info->mach == bfd_mach_nios2r2)
+    {
+      status = (*info->read_memory_func) (address, buffer, 2, info);
+      if (status == 0)
+	{
+	  unsigned long insn;
+	  if (endianness == BFD_ENDIAN_BIG)
+	    insn = (unsigned long) bfd_getb16 (buffer);
+	  else
+	    insn = (unsigned long) bfd_getl16 (buffer);
+	  return nios2_disassemble (address, insn, info);
+	}
+    }
+
+  /* If we got here, we couldn't read anything.  */
+  (*info->memory_error_func) (status, address, info);
+  return -1;
+}
+
+/* These two functions are the main entry points, accessed from
+   disassemble.c.  */
+int
+print_insn_big_nios2 (bfd_vma address, disassemble_info *info)
+{
+  return print_insn_nios2 (address, info, BFD_ENDIAN_BIG);
+}
+
+int
+print_insn_little_nios2 (bfd_vma address, disassemble_info *info)
+{
+  return print_insn_nios2 (address, info, BFD_ENDIAN_LITTLE);
+}
diff --git a/include/disas/bfd.h b/include/disas/bfd.h
index a112e9c..8271dc0 100644
--- a/include/disas/bfd.h
+++ b/include/disas/bfd.h
@@ -222,6 +222,10 @@ enum bfd_architecture
   bfd_arch_ia64,      /* HP/Intel ia64 */
 #define bfd_mach_ia64_elf64    64
 #define bfd_mach_ia64_elf32    32
+  bfd_arch_nios2,	/* Nios II */
+#define bfd_mach_nios2          0
+#define bfd_mach_nios2r1        1
+#define bfd_mach_nios2r2        2
   bfd_arch_lm32,       /* Lattice Mico32 */
 #define bfd_mach_lm32 1
   bfd_arch_last
@@ -415,6 +419,8 @@ int print_insn_crisv10          (bfd_vma, disassemble_info*);
 int print_insn_microblaze       (bfd_vma, disassemble_info*);
 int print_insn_ia64             (bfd_vma, disassemble_info*);
 int print_insn_lm32             (bfd_vma, disassemble_info*);
+int print_insn_big_nios2        (bfd_vma, disassemble_info*);
+int print_insn_little_nios2     (bfd_vma, disassemble_info*);
 
 #if 0
 /* Fetch the disassembler for a given BFD, if that support is available.  */
