include/opcode/riscv.h - binutils-gdb - Git at Google

 /* riscv.h.  RISC-V opcode list for GDB, the GNU debugger.
    Copyright (C) 2011-2021 Free Software Foundation, Inc.
    Contributed by Andrew Waterman

    This file is part of GDB, GAS, and the GNU binutils.

    GDB, GAS, and the GNU binutils are free software; you can redistribute
    them and/or modify them 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.

    GDB, GAS, and the GNU binutils are distributed in the hope that they
    will be useful, but WITHOUT ANY WARRANTY; without even the implied
    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
    the GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; see the file COPYING3. If not,
    see <http://www.gnu.org/licenses/>.  */

 #ifndef _RISCV_H_
 #define _RISCV_H_

 #include "riscv-opc.h"
 #include <stdlib.h>
 #include <stdint.h>

 typedef uint64_t insn_t;

 static inline unsigned int riscv_insn_length (insn_t insn)
 {
   if ((insn & 0x3) != 0x3) /* RVC instructions.  */
     return 2;
   if ((insn & 0x1f) != 0x1f) /* 32-bit instructions.  */
     return 4;
   if ((insn & 0x3f) == 0x1f) /* 48-bit instructions.  */
     return 6;
   if ((insn & 0x7f) == 0x3f) /* 64-bit instructions.  */
     return 8;
   /* Longer instructions not supported at the moment.  */
   return 2;
 }

 static const char * const riscv_rm[8] =
 {
   "rne", "rtz", "rdn", "rup", "rmm", 0, 0, "dyn"
 };

 static const char * const riscv_pred_succ[16] =
 {
   0,   "w",  "r",  "rw",  "o",  "ow",  "or",  "orw",
   "i", "iw", "ir", "irw", "io", "iow", "ior", "iorw"
 };

 #define RVC_JUMP_BITS 11
 #define RVC_JUMP_REACH ((1ULL << RVC_JUMP_BITS) * RISCV_JUMP_ALIGN)

 #define RVC_BRANCH_BITS 8
 #define RVC_BRANCH_REACH ((1ULL << RVC_BRANCH_BITS) * RISCV_BRANCH_ALIGN)

 #define RV_X(x, s, n)  (((x) >> (s)) & ((1 << (n)) - 1))
 #define RV_IMM_SIGN(x) (-(((x) >> 31) & 1))

 #define EXTRACT_ITYPE_IMM(x) \
   (RV_X(x, 20, 12) | (RV_IMM_SIGN(x) << 12))
 #define EXTRACT_STYPE_IMM(x) \
   (RV_X(x, 7, 5) | (RV_X(x, 25, 7) << 5) | (RV_IMM_SIGN(x) << 12))
 #define EXTRACT_BTYPE_IMM(x) \
   ((RV_X(x, 8, 4) << 1) | (RV_X(x, 25, 6) << 5) | (RV_X(x, 7, 1) << 11) | (RV_IMM_SIGN(x) << 12))
 #define EXTRACT_UTYPE_IMM(x) \
   ((RV_X(x, 12, 20) << 12) | (RV_IMM_SIGN(x) << 32))
 #define EXTRACT_JTYPE_IMM(x) \
   ((RV_X(x, 21, 10) << 1) | (RV_X(x, 20, 1) << 11) | (RV_X(x, 12, 8) << 12) | (RV_IMM_SIGN(x) << 20))
 #define EXTRACT_CITYPE_IMM(x) \
   (RV_X(x, 2, 5) | (-RV_X(x, 12, 1) << 5))
 #define EXTRACT_CITYPE_LUI_IMM(x) \
   (EXTRACT_CITYPE_IMM (x) << RISCV_IMM_BITS)
 #define EXTRACT_CITYPE_ADDI16SP_IMM(x) \
   ((RV_X(x, 6, 1) << 4) | (RV_X(x, 2, 1) << 5) | (RV_X(x, 5, 1) << 6) | (RV_X(x, 3, 2) << 7) | (-RV_X(x, 12, 1) << 9))
 #define EXTRACT_CITYPE_LWSP_IMM(x) \
   ((RV_X(x, 4, 3) << 2) | (RV_X(x, 12, 1) << 5) | (RV_X(x, 2, 2) << 6))
 #define EXTRACT_CITYPE_LDSP_IMM(x) \
   ((RV_X(x, 5, 2) << 3) | (RV_X(x, 12, 1) << 5) | (RV_X(x, 2, 3) << 6))
 #define EXTRACT_CSSTYPE_IMM(x) \
   (RV_X(x, 7, 6) << 0)
 #define EXTRACT_CSSTYPE_SWSP_IMM(x) \
   ((RV_X(x, 9, 4) << 2) | (RV_X(x, 7, 2) << 6))
 #define EXTRACT_CSSTYPE_SDSP_IMM(x) \
   ((RV_X(x, 10, 3) << 3) | (RV_X(x, 7, 3) << 6))
 #define EXTRACT_CIWTYPE_IMM(x) \
   (RV_X(x, 5, 8))
 #define EXTRACT_CIWTYPE_ADDI4SPN_IMM(x) \
   ((RV_X(x, 6, 1) << 2) | (RV_X(x, 5, 1) << 3) | (RV_X(x, 11, 2) << 4) | (RV_X(x, 7, 4) << 6))
 #define EXTRACT_CLTYPE_IMM(x) \
   ((RV_X(x, 5, 2) << 0) | (RV_X(x, 10, 3) << 2))
 #define EXTRACT_CLTYPE_LW_IMM(x) \
   ((RV_X(x, 6, 1) << 2) | (RV_X(x, 10, 3) << 3) | (RV_X(x, 5, 1) << 6))
 #define EXTRACT_CLTYPE_LD_IMM(x) \
   ((RV_X(x, 10, 3) << 3) | (RV_X(x, 5, 2) << 6))
 #define EXTRACT_CBTYPE_IMM(x) \
   ((RV_X(x, 3, 2) << 1) | (RV_X(x, 10, 2) << 3) | (RV_X(x, 2, 1) << 5) | (RV_X(x, 5, 2) << 6) | (-RV_X(x, 12, 1) << 8))
 #define EXTRACT_CJTYPE_IMM(x) \
   ((RV_X(x, 3, 3) << 1) | (RV_X(x, 11, 1) << 4) | (RV_X(x, 2, 1) << 5) | (RV_X(x, 7, 1) << 6) | (RV_X(x, 6, 1) << 7) | (RV_X(x, 9, 2) << 8) | (RV_X(x, 8, 1) << 10) | (-RV_X(x, 12, 1) << 11))

 #define ENCODE_ITYPE_IMM(x) \
   (RV_X(x, 0, 12) << 20)
 #define ENCODE_STYPE_IMM(x) \
   ((RV_X(x, 0, 5) << 7) | (RV_X(x, 5, 7) << 25))
 #define ENCODE_BTYPE_IMM(x) \
   ((RV_X(x, 1, 4) << 8) | (RV_X(x, 5, 6) << 25) | (RV_X(x, 11, 1) << 7) | (RV_X(x, 12, 1) << 31))
 #define ENCODE_UTYPE_IMM(x) \
   (RV_X(x, 12, 20) << 12)
 #define ENCODE_JTYPE_IMM(x) \
   ((RV_X(x, 1, 10) << 21) | (RV_X(x, 11, 1) << 20) | (RV_X(x, 12, 8) << 12) | (RV_X(x, 20, 1) << 31))
 #define ENCODE_CITYPE_IMM(x) \
   ((RV_X(x, 0, 5) << 2) | (RV_X(x, 5, 1) << 12))
 #define ENCODE_CITYPE_LUI_IMM(x) \
   ENCODE_CITYPE_IMM ((x) >> RISCV_IMM_BITS)
 #define ENCODE_CITYPE_ADDI16SP_IMM(x) \
   ((RV_X(x, 4, 1) << 6) | (RV_X(x, 5, 1) << 2) | (RV_X(x, 6, 1) << 5) | (RV_X(x, 7, 2) << 3) | (RV_X(x, 9, 1) << 12))
 #define ENCODE_CITYPE_LWSP_IMM(x) \
   ((RV_X(x, 2, 3) << 4) | (RV_X(x, 5, 1) << 12) | (RV_X(x, 6, 2) << 2))
 #define ENCODE_CITYPE_LDSP_IMM(x) \
   ((RV_X(x, 3, 2) << 5) | (RV_X(x, 5, 1) << 12) | (RV_X(x, 6, 3) << 2))
 #define ENCODE_CSSTYPE_IMM(x) \
   (RV_X(x, 0, 6) << 7)
 #define ENCODE_CSSTYPE_SWSP_IMM(x) \
   ((RV_X(x, 2, 4) << 9) | (RV_X(x, 6, 2) << 7))
 #define ENCODE_CSSTYPE_SDSP_IMM(x) \
   ((RV_X(x, 3, 3) << 10) | (RV_X(x, 6, 3) << 7))
 #define ENCODE_CIWTYPE_IMM(x) \
   (RV_X(x, 0, 8) << 5)
 #define ENCODE_CIWTYPE_ADDI4SPN_IMM(x) \
   ((RV_X(x, 2, 1) << 6) | (RV_X(x, 3, 1) << 5) | (RV_X(x, 4, 2) << 11) | (RV_X(x, 6, 4) << 7))
 #define ENCODE_CLTYPE_IMM(x) \
   ((RV_X(x, 0, 2) << 5) | (RV_X(x, 2, 3) << 10))
 #define ENCODE_CLTYPE_LW_IMM(x) \
   ((RV_X(x, 2, 1) << 6) | (RV_X(x, 3, 3) << 10) | (RV_X(x, 6, 1) << 5))
 #define ENCODE_CLTYPE_LD_IMM(x) \
   ((RV_X(x, 3, 3) << 10) | (RV_X(x, 6, 2) << 5))
 #define ENCODE_CBTYPE_IMM(x) \
   ((RV_X(x, 1, 2) << 3) | (RV_X(x, 3, 2) << 10) | (RV_X(x, 5, 1) << 2) | (RV_X(x, 6, 2) << 5) | (RV_X(x, 8, 1) << 12))
 #define ENCODE_CJTYPE_IMM(x) \
   ((RV_X(x, 1, 3) << 3) | (RV_X(x, 4, 1) << 11) | (RV_X(x, 5, 1) << 2) | (RV_X(x, 6, 1) << 7) | (RV_X(x, 7, 1) << 6) | (RV_X(x, 8, 2) << 9) | (RV_X(x, 10, 1) << 8) | (RV_X(x, 11, 1) << 12))

 #define VALID_ITYPE_IMM(x) (EXTRACT_ITYPE_IMM(ENCODE_ITYPE_IMM(x)) == (x))
 #define VALID_STYPE_IMM(x) (EXTRACT_STYPE_IMM(ENCODE_STYPE_IMM(x)) == (x))
 #define VALID_BTYPE_IMM(x) (EXTRACT_BTYPE_IMM(ENCODE_BTYPE_IMM(x)) == (x))
 #define VALID_UTYPE_IMM(x) (EXTRACT_UTYPE_IMM(ENCODE_UTYPE_IMM(x)) == (x))
 #define VALID_JTYPE_IMM(x) (EXTRACT_JTYPE_IMM(ENCODE_JTYPE_IMM(x)) == (x))
 #define VALID_CITYPE_IMM(x) (EXTRACT_CITYPE_IMM(ENCODE_CITYPE_IMM(x)) == (x))
 #define VALID_CITYPE_LUI_IMM(x) (ENCODE_CITYPE_LUI_IMM(x) != 0 \
 				 && EXTRACT_CITYPE_LUI_IMM(ENCODE_CITYPE_LUI_IMM(x)) == (x))
 #define VALID_CITYPE_ADDI16SP_IMM(x) (ENCODE_CITYPE_ADDI16SP_IMM(x) != 0 \
 				      && EXTRACT_CITYPE_ADDI16SP_IMM(ENCODE_CITYPE_ADDI16SP_IMM(x)) == (x))
 #define VALID_CITYPE_LWSP_IMM(x) (EXTRACT_CITYPE_LWSP_IMM(ENCODE_CITYPE_LWSP_IMM(x)) == (x))
 #define VALID_CITYPE_LDSP_IMM(x) (EXTRACT_CITYPE_LDSP_IMM(ENCODE_CITYPE_LDSP_IMM(x)) == (x))
 #define VALID_CSSTYPE_IMM(x) (EXTRACT_CSSTYPE_IMM(ENCODE_CSSTYPE_IMM(x)) == (x))
 #define VALID_CSSTYPE_SWSP_IMM(x) (EXTRACT_CSSTYPE_SWSP_IMM(ENCODE_CSSTYPE_SWSP_IMM(x)) == (x))
 #define VALID_CSSTYPE_SDSP_IMM(x) (EXTRACT_CSSTYPE_SDSP_IMM(ENCODE_CSSTYPE_SDSP_IMM(x)) == (x))
 #define VALID_CIWTYPE_IMM(x) (EXTRACT_CIWTYPE_IMM(ENCODE_CIWTYPE_IMM(x)) == (x))
 #define VALID_CIWTYPE_ADDI4SPN_IMM(x) (EXTRACT_CIWTYPE_ADDI4SPN_IMM(ENCODE_CIWTYPE_ADDI4SPN_IMM(x)) == (x))
 #define VALID_CLTYPE_IMM(x) (EXTRACT_CLTYPE_IMM(ENCODE_CLTYPE_IMM(x)) == (x))
 #define VALID_CLTYPE_LW_IMM(x) (EXTRACT_CLTYPE_LW_IMM(ENCODE_CLTYPE_LW_IMM(x)) == (x))
 #define VALID_CLTYPE_LD_IMM(x) (EXTRACT_CLTYPE_LD_IMM(ENCODE_CLTYPE_LD_IMM(x)) == (x))
 #define VALID_CBTYPE_IMM(x) (EXTRACT_CBTYPE_IMM(ENCODE_CBTYPE_IMM(x)) == (x))
 #define VALID_CJTYPE_IMM(x) (EXTRACT_CJTYPE_IMM(ENCODE_CJTYPE_IMM(x)) == (x))

 #define RISCV_RTYPE(insn, rd, rs1, rs2) \
   ((MATCH_ ## insn) | ((rd) << OP_SH_RD) | ((rs1) << OP_SH_RS1) | ((rs2) << OP_SH_RS2))
 #define RISCV_ITYPE(insn, rd, rs1, imm) \
   ((MATCH_ ## insn) | ((rd) << OP_SH_RD) | ((rs1) << OP_SH_RS1) | ENCODE_ITYPE_IMM(imm))
 #define RISCV_STYPE(insn, rs1, rs2, imm) \
   ((MATCH_ ## insn) | ((rs1) << OP_SH_RS1) | ((rs2) << OP_SH_RS2) | ENCODE_STYPE_IMM(imm))
 #define RISCV_BTYPE(insn, rs1, rs2, target) \
   ((MATCH_ ## insn) | ((rs1) << OP_SH_RS1) | ((rs2) << OP_SH_RS2) | ENCODE_BTYPE_IMM(target))
 #define RISCV_UTYPE(insn, rd, bigimm) \
   ((MATCH_ ## insn) | ((rd) << OP_SH_RD) | ENCODE_UTYPE_IMM(bigimm))
 #define RISCV_JTYPE(insn, rd, target) \
   ((MATCH_ ## insn) | ((rd) << OP_SH_RD) | ENCODE_JTYPE_IMM(target))

 #define RISCV_NOP RISCV_ITYPE(ADDI, 0, 0, 0)
 #define RVC_NOP MATCH_C_ADDI

 #define RISCV_CONST_HIGH_PART(VALUE) \
   (((VALUE) + (RISCV_IMM_REACH/2)) & ~(RISCV_IMM_REACH-1))
 #define RISCV_CONST_LOW_PART(VALUE) ((VALUE) - RISCV_CONST_HIGH_PART (VALUE))
 #define RISCV_PCREL_HIGH_PART(VALUE, PC) RISCV_CONST_HIGH_PART((VALUE) - (PC))
 #define RISCV_PCREL_LOW_PART(VALUE, PC) RISCV_CONST_LOW_PART((VALUE) - (PC))

 #define RISCV_JUMP_BITS RISCV_BIGIMM_BITS
 #define RISCV_JUMP_ALIGN_BITS 1
 #define RISCV_JUMP_ALIGN (1 << RISCV_JUMP_ALIGN_BITS)
 #define RISCV_JUMP_REACH ((1ULL << RISCV_JUMP_BITS) * RISCV_JUMP_ALIGN)

 #define RISCV_IMM_BITS 12
 #define RISCV_BIGIMM_BITS (32 - RISCV_IMM_BITS)
 #define RISCV_IMM_REACH (1LL << RISCV_IMM_BITS)
 #define RISCV_BIGIMM_REACH (1LL << RISCV_BIGIMM_BITS)
 #define RISCV_RVC_IMM_REACH (1LL << 6)
 #define RISCV_BRANCH_BITS RISCV_IMM_BITS
 #define RISCV_BRANCH_ALIGN_BITS RISCV_JUMP_ALIGN_BITS
 #define RISCV_BRANCH_ALIGN (1 << RISCV_BRANCH_ALIGN_BITS)
 #define RISCV_BRANCH_REACH (RISCV_IMM_REACH * RISCV_BRANCH_ALIGN)

 /* RV fields.  */

 #define OP_MASK_OP		0x7f
 #define OP_SH_OP		0
 #define OP_MASK_RS2		0x1f
 #define OP_SH_RS2		20
 #define OP_MASK_RS1		0x1f
 #define OP_SH_RS1		15
 #define OP_MASK_RS3		0x1fU
 #define OP_SH_RS3		27
 #define OP_MASK_RD		0x1f
 #define OP_SH_RD		7
 #define OP_MASK_SHAMT		0x3f
 #define OP_SH_SHAMT		20
 #define OP_MASK_SHAMTW		0x1f
 #define OP_SH_SHAMTW		20
 #define OP_MASK_RM		0x7
 #define OP_SH_RM		12
 #define OP_MASK_PRED		0xf
 #define OP_SH_PRED		24
 #define OP_MASK_SUCC		0xf
 #define OP_SH_SUCC		20
 #define OP_MASK_AQ		0x1
 #define OP_SH_AQ		26
 #define OP_MASK_RL		0x1
 #define OP_SH_RL		25

 #define OP_MASK_CSR		0xfffU
 #define OP_SH_CSR		20

 #define OP_MASK_FUNCT3		0x7
 #define OP_SH_FUNCT3		12
 #define OP_MASK_FUNCT7		0x7fU
 #define OP_SH_FUNCT7		25
 #define OP_MASK_FUNCT2		0x3
 #define OP_SH_FUNCT2		25

 /* RVC fields.  */

 #define OP_MASK_OP2		0x3
 #define OP_SH_OP2		0

 #define OP_MASK_CRS2		0x1f
 #define OP_SH_CRS2		2
 #define OP_MASK_CRS1S		0x7
 #define OP_SH_CRS1S		7
 #define OP_MASK_CRS2S		0x7
 #define OP_SH_CRS2S		2

 #define OP_MASK_CFUNCT6		0x3f
 #define OP_SH_CFUNCT6		10
 #define OP_MASK_CFUNCT4		0xf
 #define OP_SH_CFUNCT4		12
 #define OP_MASK_CFUNCT3		0x7
 #define OP_SH_CFUNCT3		13
 #define OP_MASK_CFUNCT2		0x3
 #define OP_SH_CFUNCT2		5

 /* ABI names for selected x-registers.  */

 #define X_RA 1
 #define X_SP 2
 #define X_GP 3
 #define X_TP 4
 #define X_T0 5
 #define X_T1 6
 #define X_T2 7
 #define X_T3 28

 #define NGPR 32
 #define NFPR 32

 /* These fake label defines are use by both the assembler, and
    libopcodes.  The assembler uses this when it needs to generate a fake
    label, and libopcodes uses it to hide the fake labels in its output.  */
 #define RISCV_FAKE_LABEL_NAME ".L0 "
 #define RISCV_FAKE_LABEL_CHAR ' '

 /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in
    VALUE << SHIFT.  VALUE is evaluated exactly once.  */
 #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \
   (STRUCT) = (((STRUCT) & ~((insn_t)(MASK) << (SHIFT))) \
 	      | ((insn_t)((VALUE) & (MASK)) << (SHIFT)))

 /* Extract bits MASK << SHIFT from STRUCT and shift them right
    SHIFT places.  */
 #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \
   (((STRUCT) >> (SHIFT)) & (MASK))

 /* Extract the operand given by FIELD from integer INSN.  */
 #define EXTRACT_OPERAND(FIELD, INSN) \
   EXTRACT_BITS ((INSN), OP_MASK_##FIELD, OP_SH_##FIELD)

 /* The maximal number of subset can be required.  */
 #define MAX_SUBSET_NUM 4

 /* All RISC-V instructions belong to at least one of these classes.  */
 enum riscv_insn_class
 {
   INSN_CLASS_NONE,

   INSN_CLASS_I,
   INSN_CLASS_C,
   INSN_CLASS_A,
   INSN_CLASS_M,
   INSN_CLASS_F,
   INSN_CLASS_D,
   INSN_CLASS_Q,
   INSN_CLASS_F_AND_C,
   INSN_CLASS_D_AND_C,
   INSN_CLASS_ZICSR,
   INSN_CLASS_ZIFENCEI,
   INSN_CLASS_ZIHINTPAUSE,
   INSN_CLASS_ZBA,
   INSN_CLASS_ZBB,
   INSN_CLASS_ZBC,
 };

 /* This structure holds information for a particular instruction.  */
 struct riscv_opcode
 {
   /* The name of the instruction.  */
   const char *name;

   /* The requirement of xlen for the instruction, 0 if no requirement.  */
   unsigned xlen_requirement;

   /* Class to which this instruction belongs.  Used to decide whether or
      not this instruction is legal in the current -march context.  */
   enum riscv_insn_class insn_class;

   /* A string describing the arguments for this instruction.  */
   const char *args;

   /* The basic opcode for the instruction.  When assembling, this
      opcode is modified by the arguments to produce the actual opcode
      that is used.  If pinfo is INSN_MACRO, then this is 0.  */
   insn_t match;

   /* If pinfo is not INSN_MACRO, then 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.  If pinfo is
      INSN_MACRO, then this field is the macro identifier.  */
   insn_t mask;

   /* A function to determine if a word corresponds to this instruction.
      Usually, this computes ((word & mask) == match).  */
   int (*match_func) (const struct riscv_opcode *op, insn_t word);

   /* For a macro, this is INSN_MACRO.  Otherwise, it is a collection
      of bits describing the instruction, notably any relevant hazard
      information.  */
   unsigned long pinfo;
 };

 /* Instruction is a simple alias (e.g. "mv" for "addi").  */
 #define	INSN_ALIAS		0x00000001

 /* These are for setting insn_info fields.

    Nonbranch is the default.  Noninsn is used only if there is no match.
    There are no condjsr or dref2 instructions.  So that leaves condbranch,
    branch, jsr, and dref that we need to handle here, encoded in 3 bits.  */
 #define INSN_TYPE		0x0000000e

 /* Instruction is an unconditional branch.  */
 #define INSN_BRANCH		0x00000002
 /* Instruction is a conditional branch.  */
 #define INSN_CONDBRANCH		0x00000004
 /* Instruction is a jump to subroutine.  */
 #define INSN_JSR		0x00000006
 /* Instruction is a data reference.  */
 #define INSN_DREF		0x00000008

 /* We have 5 data reference sizes, which we can encode in 3 bits.  */
 #define INSN_DATA_SIZE		0x00000070
 #define INSN_DATA_SIZE_SHIFT	4
 #define INSN_1_BYTE		0x00000010
 #define INSN_2_BYTE		0x00000020
 #define INSN_4_BYTE		0x00000030
 #define INSN_8_BYTE		0x00000040
 #define INSN_16_BYTE		0x00000050

 /* Instruction is actually a macro.  It should be ignored by the
    disassembler, and requires special treatment by the assembler.  */
 #define INSN_MACRO		0xffffffff

 /* This is a list of macro expanded instructions.  */
 enum
 {
   M_LA,
   M_LLA,
   M_LA_TLS_GD,
   M_LA_TLS_IE,
   M_LB,
   M_LBU,
   M_LH,
   M_LHU,
   M_LW,
   M_LWU,
   M_LD,
   M_SB,
   M_SH,
   M_SW,
   M_SD,
   M_FLW,
   M_FLD,
   M_FLQ,
   M_FSW,
   M_FSD,
   M_FSQ,
   M_CALL,
   M_J,
   M_LI,
   M_ZEXTH,
   M_ZEXTW,
   M_SEXTB,
   M_SEXTH,
   M_NUM_MACROS
 };


 extern const char * const riscv_gpr_names_numeric[NGPR];
 extern const char * const riscv_gpr_names_abi[NGPR];
 extern const char * const riscv_fpr_names_numeric[NFPR];
 extern const char * const riscv_fpr_names_abi[NFPR];

 extern const struct riscv_opcode riscv_opcodes[];
 extern const struct riscv_opcode riscv_insn_types[];

 #endif /* _RISCV_H_ */
	/* riscv.h. RISC-V opcode list for GDB, the GNU debugger.
	Copyright (C) 2011-2021 Free Software Foundation, Inc.
	Contributed by Andrew Waterman

	This file is part of GDB, GAS, and the GNU binutils.

	GDB, GAS, and the GNU binutils are free software; you can redistribute
	them and/or modify them 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.

	GDB, GAS, and the GNU binutils are distributed in the hope that they
	will be useful, but WITHOUT ANY WARRANTY; without even the implied
	warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	the GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; see the file COPYING3. If not,
	see <http://www.gnu.org/licenses/>. */

	#ifndef _RISCV_H_
	#define _RISCV_H_

	#include "riscv-opc.h"
	#include <stdlib.h>
	#include <stdint.h>

	typedef uint64_t insn_t;

	static inline unsigned int riscv_insn_length (insn_t insn)
	{
	if ((insn & 0x3) != 0x3) /* RVC instructions. */
	return 2;
	if ((insn & 0x1f) != 0x1f) /* 32-bit instructions. */
	return 4;
	if ((insn & 0x3f) == 0x1f) /* 48-bit instructions. */
	return 6;
	if ((insn & 0x7f) == 0x3f) /* 64-bit instructions. */
	return 8;
	/* Longer instructions not supported at the moment. */
	return 2;
	}

	static const char * const riscv_rm[8] =
	{
	"rne", "rtz", "rdn", "rup", "rmm", 0, 0, "dyn"
	};

	static const char * const riscv_pred_succ[16] =
	{
	0, "w", "r", "rw", "o", "ow", "or", "orw",
	"i", "iw", "ir", "irw", "io", "iow", "ior", "iorw"
	};

	#define RVC_JUMP_BITS 11
	#define RVC_JUMP_REACH ((1ULL << RVC_JUMP_BITS) * RISCV_JUMP_ALIGN)

	#define RVC_BRANCH_BITS 8
	#define RVC_BRANCH_REACH ((1ULL << RVC_BRANCH_BITS) * RISCV_BRANCH_ALIGN)

	#define RV_X(x, s, n) (((x) >> (s)) & ((1 << (n)) - 1))
	#define RV_IMM_SIGN(x) (-(((x) >> 31) & 1))

	#define EXTRACT_ITYPE_IMM(x) \
	(RV_X(x, 20, 12) \| (RV_IMM_SIGN(x) << 12))
	#define EXTRACT_STYPE_IMM(x) \
	(RV_X(x, 7, 5) \| (RV_X(x, 25, 7) << 5) \| (RV_IMM_SIGN(x) << 12))
	#define EXTRACT_BTYPE_IMM(x) \
	((RV_X(x, 8, 4) << 1) \| (RV_X(x, 25, 6) << 5) \| (RV_X(x, 7, 1) << 11) \| (RV_IMM_SIGN(x) << 12))
	#define EXTRACT_UTYPE_IMM(x) \
	((RV_X(x, 12, 20) << 12) \| (RV_IMM_SIGN(x) << 32))
	#define EXTRACT_JTYPE_IMM(x) \
	((RV_X(x, 21, 10) << 1) \| (RV_X(x, 20, 1) << 11) \| (RV_X(x, 12, 8) << 12) \| (RV_IMM_SIGN(x) << 20))
	#define EXTRACT_CITYPE_IMM(x) \
	(RV_X(x, 2, 5) \| (-RV_X(x, 12, 1) << 5))
	#define EXTRACT_CITYPE_LUI_IMM(x) \
	(EXTRACT_CITYPE_IMM (x) << RISCV_IMM_BITS)
	#define EXTRACT_CITYPE_ADDI16SP_IMM(x) \
	((RV_X(x, 6, 1) << 4) \| (RV_X(x, 2, 1) << 5) \| (RV_X(x, 5, 1) << 6) \| (RV_X(x, 3, 2) << 7) \| (-RV_X(x, 12, 1) << 9))
	#define EXTRACT_CITYPE_LWSP_IMM(x) \
	((RV_X(x, 4, 3) << 2) \| (RV_X(x, 12, 1) << 5) \| (RV_X(x, 2, 2) << 6))
	#define EXTRACT_CITYPE_LDSP_IMM(x) \
	((RV_X(x, 5, 2) << 3) \| (RV_X(x, 12, 1) << 5) \| (RV_X(x, 2, 3) << 6))
	#define EXTRACT_CSSTYPE_IMM(x) \
	(RV_X(x, 7, 6) << 0)
	#define EXTRACT_CSSTYPE_SWSP_IMM(x) \
	((RV_X(x, 9, 4) << 2) \| (RV_X(x, 7, 2) << 6))
	#define EXTRACT_CSSTYPE_SDSP_IMM(x) \
	((RV_X(x, 10, 3) << 3) \| (RV_X(x, 7, 3) << 6))
	#define EXTRACT_CIWTYPE_IMM(x) \
	(RV_X(x, 5, 8))
	#define EXTRACT_CIWTYPE_ADDI4SPN_IMM(x) \
	((RV_X(x, 6, 1) << 2) \| (RV_X(x, 5, 1) << 3) \| (RV_X(x, 11, 2) << 4) \| (RV_X(x, 7, 4) << 6))
	#define EXTRACT_CLTYPE_IMM(x) \
	((RV_X(x, 5, 2) << 0) \| (RV_X(x, 10, 3) << 2))
	#define EXTRACT_CLTYPE_LW_IMM(x) \
	((RV_X(x, 6, 1) << 2) \| (RV_X(x, 10, 3) << 3) \| (RV_X(x, 5, 1) << 6))
	#define EXTRACT_CLTYPE_LD_IMM(x) \
	((RV_X(x, 10, 3) << 3) \| (RV_X(x, 5, 2) << 6))
	#define EXTRACT_CBTYPE_IMM(x) \
	((RV_X(x, 3, 2) << 1) \| (RV_X(x, 10, 2) << 3) \| (RV_X(x, 2, 1) << 5) \| (RV_X(x, 5, 2) << 6) \| (-RV_X(x, 12, 1) << 8))
	#define EXTRACT_CJTYPE_IMM(x) \
	((RV_X(x, 3, 3) << 1) \| (RV_X(x, 11, 1) << 4) \| (RV_X(x, 2, 1) << 5) \| (RV_X(x, 7, 1) << 6) \| (RV_X(x, 6, 1) << 7) \| (RV_X(x, 9, 2) << 8) \| (RV_X(x, 8, 1) << 10) \| (-RV_X(x, 12, 1) << 11))

	#define ENCODE_ITYPE_IMM(x) \
	(RV_X(x, 0, 12) << 20)
	#define ENCODE_STYPE_IMM(x) \
	((RV_X(x, 0, 5) << 7) \| (RV_X(x, 5, 7) << 25))
	#define ENCODE_BTYPE_IMM(x) \
	((RV_X(x, 1, 4) << 8) \| (RV_X(x, 5, 6) << 25) \| (RV_X(x, 11, 1) << 7) \| (RV_X(x, 12, 1) << 31))
	#define ENCODE_UTYPE_IMM(x) \
	(RV_X(x, 12, 20) << 12)
	#define ENCODE_JTYPE_IMM(x) \
	((RV_X(x, 1, 10) << 21) \| (RV_X(x, 11, 1) << 20) \| (RV_X(x, 12, 8) << 12) \| (RV_X(x, 20, 1) << 31))
	#define ENCODE_CITYPE_IMM(x) \
	((RV_X(x, 0, 5) << 2) \| (RV_X(x, 5, 1) << 12))
	#define ENCODE_CITYPE_LUI_IMM(x) \
	ENCODE_CITYPE_IMM ((x) >> RISCV_IMM_BITS)
	#define ENCODE_CITYPE_ADDI16SP_IMM(x) \
	((RV_X(x, 4, 1) << 6) \| (RV_X(x, 5, 1) << 2) \| (RV_X(x, 6, 1) << 5) \| (RV_X(x, 7, 2) << 3) \| (RV_X(x, 9, 1) << 12))
	#define ENCODE_CITYPE_LWSP_IMM(x) \
	((RV_X(x, 2, 3) << 4) \| (RV_X(x, 5, 1) << 12) \| (RV_X(x, 6, 2) << 2))
	#define ENCODE_CITYPE_LDSP_IMM(x) \
	((RV_X(x, 3, 2) << 5) \| (RV_X(x, 5, 1) << 12) \| (RV_X(x, 6, 3) << 2))
	#define ENCODE_CSSTYPE_IMM(x) \
	(RV_X(x, 0, 6) << 7)
	#define ENCODE_CSSTYPE_SWSP_IMM(x) \
	((RV_X(x, 2, 4) << 9) \| (RV_X(x, 6, 2) << 7))
	#define ENCODE_CSSTYPE_SDSP_IMM(x) \
	((RV_X(x, 3, 3) << 10) \| (RV_X(x, 6, 3) << 7))
	#define ENCODE_CIWTYPE_IMM(x) \
	(RV_X(x, 0, 8) << 5)
	#define ENCODE_CIWTYPE_ADDI4SPN_IMM(x) \
	((RV_X(x, 2, 1) << 6) \| (RV_X(x, 3, 1) << 5) \| (RV_X(x, 4, 2) << 11) \| (RV_X(x, 6, 4) << 7))
	#define ENCODE_CLTYPE_IMM(x) \
	((RV_X(x, 0, 2) << 5) \| (RV_X(x, 2, 3) << 10))
	#define ENCODE_CLTYPE_LW_IMM(x) \
	((RV_X(x, 2, 1) << 6) \| (RV_X(x, 3, 3) << 10) \| (RV_X(x, 6, 1) << 5))
	#define ENCODE_CLTYPE_LD_IMM(x) \
	((RV_X(x, 3, 3) << 10) \| (RV_X(x, 6, 2) << 5))
	#define ENCODE_CBTYPE_IMM(x) \
	((RV_X(x, 1, 2) << 3) \| (RV_X(x, 3, 2) << 10) \| (RV_X(x, 5, 1) << 2) \| (RV_X(x, 6, 2) << 5) \| (RV_X(x, 8, 1) << 12))
	#define ENCODE_CJTYPE_IMM(x) \
	((RV_X(x, 1, 3) << 3) \| (RV_X(x, 4, 1) << 11) \| (RV_X(x, 5, 1) << 2) \| (RV_X(x, 6, 1) << 7) \| (RV_X(x, 7, 1) << 6) \| (RV_X(x, 8, 2) << 9) \| (RV_X(x, 10, 1) << 8) \| (RV_X(x, 11, 1) << 12))

	#define VALID_ITYPE_IMM(x) (EXTRACT_ITYPE_IMM(ENCODE_ITYPE_IMM(x)) == (x))
	#define VALID_STYPE_IMM(x) (EXTRACT_STYPE_IMM(ENCODE_STYPE_IMM(x)) == (x))
	#define VALID_BTYPE_IMM(x) (EXTRACT_BTYPE_IMM(ENCODE_BTYPE_IMM(x)) == (x))
	#define VALID_UTYPE_IMM(x) (EXTRACT_UTYPE_IMM(ENCODE_UTYPE_IMM(x)) == (x))
	#define VALID_JTYPE_IMM(x) (EXTRACT_JTYPE_IMM(ENCODE_JTYPE_IMM(x)) == (x))
	#define VALID_CITYPE_IMM(x) (EXTRACT_CITYPE_IMM(ENCODE_CITYPE_IMM(x)) == (x))
	#define VALID_CITYPE_LUI_IMM(x) (ENCODE_CITYPE_LUI_IMM(x) != 0 \
	&& EXTRACT_CITYPE_LUI_IMM(ENCODE_CITYPE_LUI_IMM(x)) == (x))
	#define VALID_CITYPE_ADDI16SP_IMM(x) (ENCODE_CITYPE_ADDI16SP_IMM(x) != 0 \
	&& EXTRACT_CITYPE_ADDI16SP_IMM(ENCODE_CITYPE_ADDI16SP_IMM(x)) == (x))
	#define VALID_CITYPE_LWSP_IMM(x) (EXTRACT_CITYPE_LWSP_IMM(ENCODE_CITYPE_LWSP_IMM(x)) == (x))
	#define VALID_CITYPE_LDSP_IMM(x) (EXTRACT_CITYPE_LDSP_IMM(ENCODE_CITYPE_LDSP_IMM(x)) == (x))
	#define VALID_CSSTYPE_IMM(x) (EXTRACT_CSSTYPE_IMM(ENCODE_CSSTYPE_IMM(x)) == (x))
	#define VALID_CSSTYPE_SWSP_IMM(x) (EXTRACT_CSSTYPE_SWSP_IMM(ENCODE_CSSTYPE_SWSP_IMM(x)) == (x))
	#define VALID_CSSTYPE_SDSP_IMM(x) (EXTRACT_CSSTYPE_SDSP_IMM(ENCODE_CSSTYPE_SDSP_IMM(x)) == (x))
	#define VALID_CIWTYPE_IMM(x) (EXTRACT_CIWTYPE_IMM(ENCODE_CIWTYPE_IMM(x)) == (x))
	#define VALID_CIWTYPE_ADDI4SPN_IMM(x) (EXTRACT_CIWTYPE_ADDI4SPN_IMM(ENCODE_CIWTYPE_ADDI4SPN_IMM(x)) == (x))
	#define VALID_CLTYPE_IMM(x) (EXTRACT_CLTYPE_IMM(ENCODE_CLTYPE_IMM(x)) == (x))
	#define VALID_CLTYPE_LW_IMM(x) (EXTRACT_CLTYPE_LW_IMM(ENCODE_CLTYPE_LW_IMM(x)) == (x))
	#define VALID_CLTYPE_LD_IMM(x) (EXTRACT_CLTYPE_LD_IMM(ENCODE_CLTYPE_LD_IMM(x)) == (x))
	#define VALID_CBTYPE_IMM(x) (EXTRACT_CBTYPE_IMM(ENCODE_CBTYPE_IMM(x)) == (x))
	#define VALID_CJTYPE_IMM(x) (EXTRACT_CJTYPE_IMM(ENCODE_CJTYPE_IMM(x)) == (x))

	#define RISCV_RTYPE(insn, rd, rs1, rs2) \
	((MATCH_ ## insn) \| ((rd) << OP_SH_RD) \| ((rs1) << OP_SH_RS1) \| ((rs2) << OP_SH_RS2))
	#define RISCV_ITYPE(insn, rd, rs1, imm) \
	((MATCH_ ## insn) \| ((rd) << OP_SH_RD) \| ((rs1) << OP_SH_RS1) \| ENCODE_ITYPE_IMM(imm))
	#define RISCV_STYPE(insn, rs1, rs2, imm) \
	((MATCH_ ## insn) \| ((rs1) << OP_SH_RS1) \| ((rs2) << OP_SH_RS2) \| ENCODE_STYPE_IMM(imm))
	#define RISCV_BTYPE(insn, rs1, rs2, target) \
	((MATCH_ ## insn) \| ((rs1) << OP_SH_RS1) \| ((rs2) << OP_SH_RS2) \| ENCODE_BTYPE_IMM(target))
	#define RISCV_UTYPE(insn, rd, bigimm) \
	((MATCH_ ## insn) \| ((rd) << OP_SH_RD) \| ENCODE_UTYPE_IMM(bigimm))
	#define RISCV_JTYPE(insn, rd, target) \
	((MATCH_ ## insn) \| ((rd) << OP_SH_RD) \| ENCODE_JTYPE_IMM(target))

	#define RISCV_NOP RISCV_ITYPE(ADDI, 0, 0, 0)
	#define RVC_NOP MATCH_C_ADDI

	#define RISCV_CONST_HIGH_PART(VALUE) \
	(((VALUE) + (RISCV_IMM_REACH/2)) & ~(RISCV_IMM_REACH-1))
	#define RISCV_CONST_LOW_PART(VALUE) ((VALUE) - RISCV_CONST_HIGH_PART (VALUE))
	#define RISCV_PCREL_HIGH_PART(VALUE, PC) RISCV_CONST_HIGH_PART((VALUE) - (PC))
	#define RISCV_PCREL_LOW_PART(VALUE, PC) RISCV_CONST_LOW_PART((VALUE) - (PC))

	#define RISCV_JUMP_BITS RISCV_BIGIMM_BITS
	#define RISCV_JUMP_ALIGN_BITS 1
	#define RISCV_JUMP_ALIGN (1 << RISCV_JUMP_ALIGN_BITS)
	#define RISCV_JUMP_REACH ((1ULL << RISCV_JUMP_BITS) * RISCV_JUMP_ALIGN)

	#define RISCV_IMM_BITS 12
	#define RISCV_BIGIMM_BITS (32 - RISCV_IMM_BITS)
	#define RISCV_IMM_REACH (1LL << RISCV_IMM_BITS)
	#define RISCV_BIGIMM_REACH (1LL << RISCV_BIGIMM_BITS)
	#define RISCV_RVC_IMM_REACH (1LL << 6)
	#define RISCV_BRANCH_BITS RISCV_IMM_BITS
	#define RISCV_BRANCH_ALIGN_BITS RISCV_JUMP_ALIGN_BITS
	#define RISCV_BRANCH_ALIGN (1 << RISCV_BRANCH_ALIGN_BITS)
	#define RISCV_BRANCH_REACH (RISCV_IMM_REACH * RISCV_BRANCH_ALIGN)

	/* RV fields. */

	#define OP_MASK_OP 0x7f
	#define OP_SH_OP 0
	#define OP_MASK_RS2 0x1f
	#define OP_SH_RS2 20
	#define OP_MASK_RS1 0x1f
	#define OP_SH_RS1 15
	#define OP_MASK_RS3 0x1fU
	#define OP_SH_RS3 27
	#define OP_MASK_RD 0x1f
	#define OP_SH_RD 7
	#define OP_MASK_SHAMT 0x3f
	#define OP_SH_SHAMT 20
	#define OP_MASK_SHAMTW 0x1f
	#define OP_SH_SHAMTW 20
	#define OP_MASK_RM 0x7
	#define OP_SH_RM 12
	#define OP_MASK_PRED 0xf
	#define OP_SH_PRED 24
	#define OP_MASK_SUCC 0xf
	#define OP_SH_SUCC 20
	#define OP_MASK_AQ 0x1
	#define OP_SH_AQ 26
	#define OP_MASK_RL 0x1
	#define OP_SH_RL 25

	#define OP_MASK_CSR 0xfffU
	#define OP_SH_CSR 20

	#define OP_MASK_FUNCT3 0x7
	#define OP_SH_FUNCT3 12
	#define OP_MASK_FUNCT7 0x7fU
	#define OP_SH_FUNCT7 25
	#define OP_MASK_FUNCT2 0x3
	#define OP_SH_FUNCT2 25

	/* RVC fields. */

	#define OP_MASK_OP2 0x3
	#define OP_SH_OP2 0

	#define OP_MASK_CRS2 0x1f
	#define OP_SH_CRS2 2
	#define OP_MASK_CRS1S 0x7
	#define OP_SH_CRS1S 7
	#define OP_MASK_CRS2S 0x7
	#define OP_SH_CRS2S 2

	#define OP_MASK_CFUNCT6 0x3f
	#define OP_SH_CFUNCT6 10
	#define OP_MASK_CFUNCT4 0xf
	#define OP_SH_CFUNCT4 12
	#define OP_MASK_CFUNCT3 0x7
	#define OP_SH_CFUNCT3 13
	#define OP_MASK_CFUNCT2 0x3
	#define OP_SH_CFUNCT2 5

	/* ABI names for selected x-registers. */

	#define X_RA 1
	#define X_SP 2
	#define X_GP 3
	#define X_TP 4
	#define X_T0 5
	#define X_T1 6
	#define X_T2 7
	#define X_T3 28

	#define NGPR 32
	#define NFPR 32

	/* These fake label defines are use by both the assembler, and
	libopcodes. The assembler uses this when it needs to generate a fake
	label, and libopcodes uses it to hide the fake labels in its output. */
	#define RISCV_FAKE_LABEL_NAME ".L0 "
	#define RISCV_FAKE_LABEL_CHAR ' '

	/* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in
	VALUE << SHIFT. VALUE is evaluated exactly once. */
	#define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \
	(STRUCT) = (((STRUCT) & ~((insn_t)(MASK) << (SHIFT))) \
	\| ((insn_t)((VALUE) & (MASK)) << (SHIFT)))

	/* Extract bits MASK << SHIFT from STRUCT and shift them right
	SHIFT places. */
	#define EXTRACT_BITS(STRUCT, MASK, SHIFT) \
	(((STRUCT) >> (SHIFT)) & (MASK))

	/* Extract the operand given by FIELD from integer INSN. */
	#define EXTRACT_OPERAND(FIELD, INSN) \
	EXTRACT_BITS ((INSN), OP_MASK_##FIELD, OP_SH_##FIELD)

	/* The maximal number of subset can be required. */
	#define MAX_SUBSET_NUM 4

	/* All RISC-V instructions belong to at least one of these classes. */
	enum riscv_insn_class
	{
	INSN_CLASS_NONE,

	INSN_CLASS_I,
	INSN_CLASS_C,
	INSN_CLASS_A,
	INSN_CLASS_M,
	INSN_CLASS_F,
	INSN_CLASS_D,
	INSN_CLASS_Q,
	INSN_CLASS_F_AND_C,
	INSN_CLASS_D_AND_C,
	INSN_CLASS_ZICSR,
	INSN_CLASS_ZIFENCEI,
	INSN_CLASS_ZIHINTPAUSE,
	INSN_CLASS_ZBA,
	INSN_CLASS_ZBB,
	INSN_CLASS_ZBC,
	};

	/* This structure holds information for a particular instruction. */
	struct riscv_opcode
	{
	/* The name of the instruction. */
	const char *name;

	/* The requirement of xlen for the instruction, 0 if no requirement. */
	unsigned xlen_requirement;

	/* Class to which this instruction belongs. Used to decide whether or
	not this instruction is legal in the current -march context. */
	enum riscv_insn_class insn_class;

	/* A string describing the arguments for this instruction. */
	const char *args;

	/* The basic opcode for the instruction. When assembling, this
	opcode is modified by the arguments to produce the actual opcode
	that is used. If pinfo is INSN_MACRO, then this is 0. */
	insn_t match;

	/* If pinfo is not INSN_MACRO, then 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. If pinfo is
	INSN_MACRO, then this field is the macro identifier. */
	insn_t mask;

	/* A function to determine if a word corresponds to this instruction.
	Usually, this computes ((word & mask) == match). */
	int (match_func) (const struct riscv_opcode op, insn_t word);

	/* For a macro, this is INSN_MACRO. Otherwise, it is a collection
	of bits describing the instruction, notably any relevant hazard
	information. */
	unsigned long pinfo;
	};

	/* Instruction is a simple alias (e.g. "mv" for "addi"). */
	#define INSN_ALIAS 0x00000001

	/* These are for setting insn_info fields.

	Nonbranch is the default. Noninsn is used only if there is no match.
	There are no condjsr or dref2 instructions. So that leaves condbranch,
	branch, jsr, and dref that we need to handle here, encoded in 3 bits. */
	#define INSN_TYPE 0x0000000e

	/* Instruction is an unconditional branch. */
	#define INSN_BRANCH 0x00000002
	/* Instruction is a conditional branch. */
	#define INSN_CONDBRANCH 0x00000004
	/* Instruction is a jump to subroutine. */
	#define INSN_JSR 0x00000006
	/* Instruction is a data reference. */
	#define INSN_DREF 0x00000008

	/* We have 5 data reference sizes, which we can encode in 3 bits. */
	#define INSN_DATA_SIZE 0x00000070
	#define INSN_DATA_SIZE_SHIFT 4
	#define INSN_1_BYTE 0x00000010
	#define INSN_2_BYTE 0x00000020
	#define INSN_4_BYTE 0x00000030
	#define INSN_8_BYTE 0x00000040
	#define INSN_16_BYTE 0x00000050

	/* Instruction is actually a macro. It should be ignored by the
	disassembler, and requires special treatment by the assembler. */
	#define INSN_MACRO 0xffffffff

	/* This is a list of macro expanded instructions. */
	enum
	{
	M_LA,
	M_LLA,
	M_LA_TLS_GD,
	M_LA_TLS_IE,
	M_LB,
	M_LBU,
	M_LH,
	M_LHU,
	M_LW,
	M_LWU,
	M_LD,
	M_SB,
	M_SH,
	M_SW,
	M_SD,
	M_FLW,
	M_FLD,
	M_FLQ,
	M_FSW,
	M_FSD,
	M_FSQ,
	M_CALL,
	M_J,
	M_LI,
	M_ZEXTH,
	M_ZEXTW,
	M_SEXTB,
	M_SEXTH,
	M_NUM_MACROS
	};


	extern const char * const riscv_gpr_names_numeric[NGPR];
	extern const char * const riscv_gpr_names_abi[NGPR];
	extern const char * const riscv_fpr_names_numeric[NFPR];
	extern const char * const riscv_fpr_names_abi[NFPR];

	extern const struct riscv_opcode riscv_opcodes[];
	extern const struct riscv_opcode riscv_insn_types[];

	#endif /* _RISCV_H_ */