path: root/opcodes/riscv-opc.c

/* RISC-V opcode list
   Copyright 2011-2016 Free Software Foundation, Inc.

   Contributed by Andrew Waterman (andrew@sifive.com).
   Based on MIPS target.

   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 program; see the file COPYING3. If not,
   see <http://www.gnu.org/licenses/>.  */

#include "sysdep.h"
#include "opcode/riscv.h"
#include <stdio.h>

/* Register names used by gas and objdump.  */

const char * const riscv_gpr_names_numeric[NGPR] =
{
  "x0",   "x1",   "x2",   "x3",   "x4",   "x5",   "x6",   "x7",
  "x8",   "x9",   "x10",  "x11",  "x12",  "x13",  "x14",  "x15",
  "x16",  "x17",  "x18",  "x19",  "x20",  "x21",  "x22",  "x23",
  "x24",  "x25",  "x26",  "x27",  "x28",  "x29",  "x30",  "x31"
};

const char * const riscv_gpr_names_abi[NGPR] = {
  "zero", "ra", "sp",  "gp",  "tp", "t0",  "t1",  "t2",
  "s0",   "s1", "a0",  "a1",  "a2", "a3",  "a4",  "a5",
  "a6",   "a7", "s2",  "s3",  "s4", "s5",  "s6",  "s7",
  "s8",   "s9", "s10", "s11", "t3", "t4",  "t5",  "t6"
};

const char * const riscv_fpr_names_numeric[NFPR] =
{
  "f0",   "f1",   "f2",   "f3",   "f4",   "f5",   "f6",   "f7",
  "f8",   "f9",   "f10",  "f11",  "f12",  "f13",  "f14",  "f15",
  "f16",  "f17",  "f18",  "f19",  "f20",  "f21",  "f22",  "f23",
  "f24",  "f25",  "f26",  "f27",  "f28",  "f29",  "f30",  "f31"
};

const char * const riscv_fpr_names_abi[NFPR] = {
  "ft0", "ft1", "ft2",  "ft3",  "ft4", "ft5", "ft6",  "ft7",
  "fs0", "fs1", "fa0",  "fa1",  "fa2", "fa3", "fa4",  "fa5",
  "fa6", "fa7", "fs2",  "fs3",  "fs4", "fs5", "fs6",  "fs7",
  "fs8", "fs9", "fs10", "fs11", "ft8", "ft9", "ft10", "ft11"
};

/* The order of overloaded instructions matters.  Label arguments and
   register arguments look the same. Instructions that can have either
   for arguments must apear in the correct order in this table for the
   assembler to pick the right one. In other words, entries with
   immediate operands must apear after the same instruction with
   registers.

   Because of the lookup algorithm used, entries with the same opcode
   name must be contiguous.  */

#define MASK_RS1 (OP_MASK_RS1 << OP_SH_RS1)
#define MASK_RS2 (OP_MASK_RS2 << OP_SH_RS2)
#define MASK_RD (OP_MASK_RD << OP_SH_RD)
#define MASK_CRS2 (OP_MASK_CRS2 << OP_SH_CRS2)
#define MASK_IMM ENCODE_ITYPE_IMM (-1U)
#define MASK_RVC_IMM ENCODE_RVC_IMM (-1U)
#define MASK_UIMM ENCODE_UTYPE_IMM (-1U)
#define MASK_RM (OP_MASK_RM << OP_SH_RM)
#define MASK_PRED (OP_MASK_PRED << OP_SH_PRED)
#define MASK_SUCC (OP_MASK_SUCC << OP_SH_SUCC)
#define MASK_AQ (OP_MASK_AQ << OP_SH_AQ)
#define MASK_RL (OP_MASK_RL << OP_SH_RL)
#define MASK_AQRL (MASK_AQ | MASK_RL)

static int
match_opcode (const struct riscv_opcode *op, insn_t insn)
{
  return ((insn ^ op->match) & op->mask) == 0;
}

static int
match_never (const struct riscv_opcode *op ATTRIBUTE_UNUSED,
	     insn_t insn ATTRIBUTE_UNUSED)
{
  return 0;
}

static int
match_rs1_eq_rs2 (const struct riscv_opcode *op, insn_t insn)
{
  int rs1 = (insn & MASK_RS1) >> OP_SH_RS1;
  int rs2 = (insn & MASK_RS2) >> OP_SH_RS2;
  return match_opcode (op, insn) && rs1 == rs2;
}

static int
match_rd_nonzero (const struct riscv_opcode *op, insn_t insn)
{
  return match_opcode (op, insn) && ((insn & MASK_RD) != 0);
}

static int
match_c_add (const struct riscv_opcode *op, insn_t insn)
{
  return match_rd_nonzero (op, insn) && ((insn & MASK_CRS2) != 0);
}

static int
match_c_lui (const struct riscv_opcode *op, insn_t insn)
{
  return match_rd_nonzero (op, insn) && (((insn & MASK_RD) >> OP_SH_RD) != 2);
}

const struct riscv_opcode riscv_opcodes[] =
{
/* name,      isa,   operands, match, mask, match_func, pinfo.  */
{"unimp",     "C",   "",  0, 0xffffU,  match_opcode, 0 },
{"unimp",     "I",   "",  MATCH_CSRRW | (CSR_CYCLE << OP_SH_CSR), 0xffffffffU,  match_opcode, 0 }, /* csrw cycle, x0 */
{"ebreak",    "C",   "",  MATCH_C_EBREAK, MASK_C_EBREAK, match_opcode, INSN_ALIAS },
{"ebreak",    "I",   "",    MATCH_EBREAK, MASK_EBREAK, match_opcode, 0 },
{"sbreak",    "C",   "",  MATCH_C_EBREAK, MASK_C_EBREAK, match_opcode, INSN_ALIAS },
{"sbreak",    "I",   "",    MATCH_EBREAK, MASK_EBREAK, match_opcode, INSN_ALIAS },
{"ret",       "C",   "",  MATCH_C_JR | (X_RA << OP_SH_RD), MASK_C_JR | MASK_RD, match_opcode, INSN_ALIAS },
{"ret",       "I",   "",  MATCH_JALR | (X_RA << OP_SH_RS1), MASK_JALR | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, INSN_ALIAS },
{"jr",        "C",   "d",  MATCH_C_JR, MASK_C_JR, match_rd_nonzero, INSN_ALIAS },
{"jr",        "I",   "s",  MATCH_JALR, MASK_JALR | MASK_RD | MASK_IMM, match_opcode, INSN_ALIAS },
{"jr",        "I",   "o(s)",  MATCH_JALR, MASK_JALR | MASK_RD, match_opcode, INSN_ALIAS },
{"jr",        "I",   "s,j",  MATCH_JALR, MASK_JALR | MASK_RD, match_opcode, INSN_ALIAS },
{"jalr",      "C",   "d",  MATCH_C_JALR, MASK_C_JALR, match_rd_nonzero, INSN_ALIAS },
{"jalr",      "I",   "s",  MATCH_JALR | (X_RA << OP_SH_RD), MASK_JALR | MASK_RD | MASK_IMM, match_opcode, INSN_ALIAS },
{"jalr",      "I",   "o(s)",  MATCH_JALR | (X_RA << OP_SH_RD), MASK_JALR | MASK_RD, match_opcode, INSN_ALIAS },
{"jalr",      "I",   "s,j",  MATCH_JALR | (X_RA << OP_SH_RD), MASK_JALR | MASK_RD, match_opcode, INSN_ALIAS },
{"jalr",      "I",   "d,s",  MATCH_JALR, MASK_JALR | MASK_IMM, match_opcode, INSN_ALIAS },
{"jalr",      "I",   "d,o(s)",  MATCH_JALR, MASK_JALR, match_opcode, 0 },
{"jalr",      "I",   "d,s,j",  MATCH_JALR, MASK_JALR, match_opcode, 0 },
{"j",         "C",   "Ca",  MATCH_C_J, MASK_C_J, match_opcode, INSN_ALIAS },
{"j",         "I",   "a",  MATCH_JAL, MASK_JAL | MASK_RD, match_opcode, INSN_ALIAS },
{"jal",       "I",   "d,a",  MATCH_JAL, MASK_JAL, match_opcode, 0 },
{"jal",       "32C", "Ca",  MATCH_C_JAL, MASK_C_JAL, match_opcode, INSN_ALIAS },
{"jal",       "I",   "a",  MATCH_JAL | (X_RA << OP_SH_RD), MASK_JAL | MASK_RD, match_opcode, INSN_ALIAS },
{"call",      "I",   "d,c", (X_T1 << OP_SH_RS1), (int) M_CALL,  match_never, INSN_MACRO },
{"call",      "I",   "c", (X_T1 << OP_SH_RS1) | (X_RA << OP_SH_RD), (int) M_CALL,  match_never, INSN_MACRO },
{"tail",      "I",   "c", (X_T1 << OP_SH_RS1), (int) M_CALL,  match_never, INSN_MACRO },
{"jump",      "I",   "c,s", 0, (int) M_CALL,  match_never, INSN_MACRO },
{"nop",       "C",   "",  MATCH_C_ADDI, 0xffff, match_opcode, INSN_ALIAS },
{"nop",       "I",   "",         MATCH_ADDI, MASK_ADDI | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, INSN_ALIAS },
{"lui",       "C",   "d,Cu",  MATCH_C_LUI, MASK_C_LUI, match_c_lui, INSN_ALIAS },
{"lui",       "I",   "d,u",  MATCH_LUI, MASK_LUI, match_opcode, 0 },
{"li",        "C",   "d,Cv",  MATCH_C_LUI, MASK_C_LUI, match_c_lui, INSN_ALIAS },
{"li",        "C",   "d,Cj",  MATCH_C_LI, MASK_C_LI, match_rd_nonzero, INSN_ALIAS },
{"li",        "C",   "d,0",  MATCH_C_LI, MASK_C_LI | MASK_RVC_IMM, match_rd_nonzero, INSN_ALIAS },
{"li",        "I",   "d,j",      MATCH_ADDI, MASK_ADDI | MASK_RS1, match_opcode, INSN_ALIAS }, /* addi */
{"li",        "I",   "d,I",  0,    (int) M_LI,  match_never, INSN_MACRO },
{"mv",        "C",   "d,CV",  MATCH_C_MV, MASK_C_MV, match_c_add, INSN_ALIAS },
{"mv",        "I",   "d,s",  MATCH_ADDI, MASK_ADDI | MASK_IMM, match_opcode, INSN_ALIAS },
{"move",      "C",   "d,CV",  MATCH_C_MV, MASK_C_MV, match_c_add, INSN_ALIAS },
{"move",      "I",   "d,s",  MATCH_ADDI, MASK_ADDI | MASK_IMM, match_opcode, INSN_ALIAS },
{"andi",      "C",   "Cs,Cw,Cj",  MATCH_C_ANDI, MASK_C_ANDI, match_opcode, INSN_ALIAS },
{"andi",      "I",   "d,s,j",  MATCH_ANDI, MASK_ANDI, match_opcode, 0 },
{"and",       "C",   "Cs,Cw,Ct",  MATCH_C_AND, MASK_C_AND, match_opcode, INSN_ALIAS },
{"and",       "C",   "Cs,Ct,Cw",  MATCH_C_AND, MASK_C_AND, match_opcode, INSN_ALIAS },
{"and",       "C",   "Cs,Cw,Cj",  MATCH_C_ANDI, MASK_C_ANDI, match_opcode, INSN_ALIAS },
{"and",       "I",   "d,s,t",  MATCH_AND, MASK_AND, match_opcode, 0 },
{"and",       "I",   "d,s,j",  MATCH_ANDI, MASK_ANDI, match_opcode, INSN_ALIAS },
{"beqz",      "C",   "Cs,Cp",  MATCH_C_BEQZ, MASK_C_BEQZ, match_opcode, INSN_ALIAS },
{"beqz",      "I",   "s,p",  MATCH_BEQ, MASK_BEQ | MASK_RS2, match_opcode, INSN_ALIAS },
{"beq",       "I",   "s,t,p",  MATCH_BEQ, MASK_BEQ, match_opcode, 0 },
{"blez",      "I",   "t,p",  MATCH_BGE, MASK_BGE | MASK_RS1, match_opcode, INSN_ALIAS },
{"bgez",      "I",   "s,p",  MATCH_BGE, MASK_BGE | MASK_RS2, match_opcode, INSN_ALIAS },
{"ble",       "I",   "t,s,p",  MATCH_BGE, MASK_BGE, match_opcode, INSN_ALIAS },
{"bleu",      "I",   "t,s,p",  MATCH_BGEU, MASK_BGEU, match_opcode, INSN_ALIAS },
{"bge",       "I",   "s,t,p",  MATCH_BGE, MASK_BGE, match_opcode, 0 },
{"bgeu",      "I",   "s,t,p",  MATCH_BGEU, MASK_BGEU, match_opcode, 0 },
{"bltz",      "I",   "s,p",  MATCH_BLT, MASK_BLT | MASK_RS2, match_opcode, INSN_ALIAS },
{"bgtz",      "I",   "t,p",  MATCH_BLT, MASK_BLT | MASK_RS1, match_opcode, INSN_ALIAS },
{"blt",       "I",   "s,t,p",  MATCH_BLT, MASK_BLT, match_opcode, 0 },
{"bltu",      "I",   "s,t,p",  MATCH_BLTU, MASK_BLTU, match_opcode, 0 },
{"bgt",       "I",   "t,s,p",  MATCH_BLT, MASK_BLT, match_opcode, INSN_ALIAS },
{"bgtu",      "I",   "t,s,p",  MATCH_BLTU, MASK_BLTU, match_opcode, INSN_ALIAS },
{"bnez",      "C",   "Cs,Cp",  MATCH_C_BNEZ, MASK_C_BNEZ, match_opcode, INSN_ALIAS },
{"bnez",      "I",   "s,p",  MATCH_BNE, MASK_BNE | MASK_RS2, match_opcode, INSN_ALIAS },
{"bne",       "I",   "s,t,p",  MATCH_BNE, MASK_BNE, match_opcode, 0 },
{"addi",      "C",   "Ct,Cc,CK", MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN, match_opcode, INSN_ALIAS },
{"addi",      "C",   "d,CU,Cj",  MATCH_C_ADDI, MASK_C_ADDI, match_rd_nonzero, INSN_ALIAS },
{"addi",      "C",   "Cc,Cc,CL", MATCH_C_ADDI16SP, MASK_C_ADDI16SP, match_opcode, INSN_ALIAS },
{"addi",      "I",   "d,s,j",  MATCH_ADDI, MASK_ADDI, match_opcode, 0 },
{"add",       "C",   "d,CU,CV",  MATCH_C_ADD, MASK_C_ADD, match_c_add, INSN_ALIAS },
{"add",       "C",   "d,CV,CU",  MATCH_C_ADD, MASK_C_ADD, match_c_add, INSN_ALIAS },
{"add",       "C",   "d,CU,Cj",  MATCH_C_ADDI, MASK_C_ADDI, match_rd_nonzero, INSN_ALIAS },
{"add",       "C",   "Ct,Cc,CK", MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN, match_opcode, INSN_ALIAS },
{"add",       "C",   "Cc,Cc,CL", MATCH_C_ADDI16SP, MASK_C_ADDI16SP, match_opcode, INSN_ALIAS },
{"add",       "I",   "d,s,t",  MATCH_ADD, MASK_ADD, match_opcode, 0 },
{"add",       "I",   "d,s,t,0",MATCH_ADD, MASK_ADD, match_opcode, 0 },
{"add",       "I",   "d,s,j",  MATCH_ADDI, MASK_ADDI, match_opcode, INSN_ALIAS },
{"la",        "I",   "d,A",  0,    (int) M_LA,  match_never, INSN_MACRO },
{"lla",       "I",   "d,A",  0,    (int) M_LLA,  match_never, INSN_MACRO },
{"la.tls.gd", "I",   "d,A",  0,    (int) M_LA_TLS_GD,  match_never, INSN_MACRO },
{"la.tls.ie", "I",   "d,A",  0,    (int) M_LA_TLS_IE,  match_never, INSN_MACRO },
{"neg",       "I",   "d,t",  MATCH_SUB, MASK_SUB | MASK_RS1, match_opcode, INSN_ALIAS }, /* sub 0 */
{"slli",      "C",   "d,CU,C>",  MATCH_C_SLLI, MASK_C_SLLI, match_rd_nonzero, INSN_ALIAS },
{"slli",      "I",   "d,s,>",   MATCH_SLLI, MASK_SLLI, match_opcode, 0 },
{"sll",       "C",   "d,CU,C>",  MATCH_C_SLLI, MASK_C_SLLI, match_rd_nonzero, INSN_ALIAS },
{"sll",       "I",   "d,s,t",   MATCH_SLL, MASK_SLL, match_opcode, 0 },
{"sll",       "I",   "d,s,>",   MATCH_SLLI, MASK_SLLI, match_opcode, INSN_ALIAS },
{"srli",      "C",   "Cs,Cw,C>",  MATCH_C_SRLI, MASK_C_SRLI, match_rd_nonzero, INSN_ALIAS },
{"srli",      "I",   "d,s,>",   MATCH_SRLI, MASK_SRLI, match_opcode, 0 },
{"srl",       "C",   "Cs,Cw,C>",  MATCH_C_SRLI, MASK_C_SRLI, match_rd_nonzero, INSN_ALIAS },
{"srl",       "I",   "d,s,t",   MATCH_SRL, MASK_SRL, match_opcode, 0 },
{"srl",       "I",   "d,s,>",   MATCH_SRLI, MASK_SRLI, match_opcode, INSN_ALIAS },
{"srai",      "C",   "Cs,Cw,C>",  MATCH_C_SRAI, MASK_C_SRAI, match_rd_nonzero, INSN_ALIAS },
{"srai",      "I",   "d,s,>",   MATCH_SRAI, MASK_SRAI, match_opcode, 0 },
{"sra",       "C",   "Cs,Cw,C>",  MATCH_C_SRAI, MASK_C_SRAI, match_rd_nonzero, INSN_ALIAS },
{"sra",       "I",   "d,s,t",   MATCH_SRA, MASK_SRA, match_opcode, 0 },
{"sra",       "I",   "d,s,>",   MATCH_SRAI, MASK_SRAI, match_opcode, INSN_ALIAS },
{"sub",       "C",   "Cs,Cw,Ct",  MATCH_C_SUB, MASK_C_SUB, match_opcode, INSN_ALIAS },
{"sub",       "I",   "d,s,t",  MATCH_SUB, MASK_SUB, match_opcode, 0 },
{"lb",        "I",   "d,o(s)",  MATCH_LB, MASK_LB, match_opcode, 0 },
{"lb",        "I",   "d,A",  0, (int) M_LB, match_never, INSN_MACRO },
{"lbu",       "I",   "d,o(s)",  MATCH_LBU, MASK_LBU, match_opcode, 0 },
{"lbu",       "I",   "d,A",  0, (int) M_LBU, match_never, INSN_MACRO },
{"lh",        "I",   "d,o(s)",  MATCH_LH, MASK_LH, match_opcode, 0 },
{"lh",        "I",   "d,A",  0, (int) M_LH, match_never, INSN_MACRO },
{"lhu",       "I",   "d,o(s)",  MATCH_LHU, MASK_LHU, match_opcode, 0 },
{"lhu",       "I",   "d,A",  0, (int) M_LHU, match_never, INSN_MACRO },
{"lw",        "C",   "d,Cm(Cc)",  MATCH_C_LWSP, MASK_C_LWSP, match_rd_nonzero, INSN_ALIAS },
{"lw",        "C",   "Ct,Ck(Cs)",  MATCH_C_LW, MASK_C_LW, match_opcode, INSN_ALIAS },
{"lw",        "I",   "d,o(s)",  MATCH_LW, MASK_LW, match_opcode, 0 },
{"lw",        "I",   "d,A",  0, (int) M_LW, match_never, INSN_MACRO },
{"not",       "I",   "d,s",  MATCH_XORI | MASK_IMM, MASK_XORI | MASK_IMM, match_opcode, INSN_ALIAS },
{"ori",       "I",   "d,s,j",  MATCH_ORI, MASK_ORI, match_opcode, 0 },
{"or",       "C",   "Cs,Cw,Ct",  MATCH_C_OR, MASK_C_OR, match_opcode, INSN_ALIAS },
{"or",       "C",   "Cs,Ct,Cw",  MATCH_C_OR, MASK_C_OR, match_opcode, INSN_ALIAS },
{"or",        "I",   "d,s,t",  MATCH_OR, MASK_OR, match_opcode, 0 },
{"or",        "I",   "d,s,j",  MATCH_ORI, MASK_ORI, match_opcode, INSN_ALIAS },
{"auipc",     "I",   "d,u",  MATCH_AUIPC, MASK_AUIPC, match_opcode, 0 },
{"seqz",      "I",   "d,s",  MATCH_SLTIU | ENCODE_ITYPE_IMM (1), MASK_SLTIU | MASK_IMM, match_opcode, INSN_ALIAS },
{"snez",      "I",   "d,t",  MATCH_SLTU, MASK_SLTU | MASK_RS1, match_opcode, INSN_ALIAS },
{"sltz",      "I",   "d,s",  MATCH_SLT, MASK_SLT | MASK_RS2, match_opcode, INSN_ALIAS },
{"sgtz",      "I",   "d,t",  MATCH_SLT, MASK_SLT | MASK_RS1, match_opcode, INSN_ALIAS },
{"slti",      "I",   "d,s,j",  MATCH_SLTI, MASK_SLTI, match_opcode, INSN_ALIAS },
{"slt",       "I",   "d,s,t",  MATCH_SLT, MASK_SLT, match_opcode, 0 },
{"slt",       "I",   "d,s,j",  MATCH_SLTI, MASK_SLTI, match_opcode, 0 },
{"sltiu",     "I",   "d,s,j",  MATCH_SLTIU, MASK_SLTIU, match_opcode, 0 },
{"sltu",      "I",   "d,s,t",  MATCH_SLTU, MASK_SLTU, match_opcode, 0 },
{"sltu",      "I",   "d,s,j",  MATCH_SLTIU, MASK_SLTIU, match_opcode, INSN_ALIAS },
{"sgt",       "I",   "d,t,s",  MATCH_SLT, MASK_SLT, match_opcode, INSN_ALIAS },
{"sgtu",      "I",   "d,t,s",  MATCH_SLTU, MASK_SLTU, match_opcode, INSN_ALIAS },
{"sb",        "I",   "t,q(s)",  MATCH_SB, MASK_SB, match_opcode, 0 },
{"sb",        "I",   "t,A,s",  0, (int) M_SB, match_never, INSN_MACRO },
{"sh",        "I",   "t,q(s)",  MATCH_SH, MASK_SH, match_opcode, 0 },
{"sh",        "I",   "t,A,s",  0, (int) M_SH, match_never, INSN_MACRO },
{"sw",        "C",   "CV,CM(Cc)",  MATCH_C_SWSP, MASK_C_SWSP, match_opcode, INSN_ALIAS },
{"sw",        "C",   "Ct,Ck(Cs)",  MATCH_C_SW, MASK_C_SW, match_opcode, INSN_ALIAS },
{"sw",        "I",   "t,q(s)",  MATCH_SW, MASK_SW, match_opcode, 0 },
{"sw",        "I",   "t,A,s",  0, (int) M_SW, match_never, INSN_MACRO },
{"fence",     "I",   "",  MATCH_FENCE | MASK_PRED | MASK_SUCC, MASK_FENCE | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, INSN_ALIAS },
{"fence",     "I",   "P,Q",  MATCH_FENCE, MASK_FENCE | MASK_RD | MASK_RS1 | (MASK_IMM & ~MASK_PRED & ~MASK_SUCC), match_opcode, 0 },
{"fence.i",   "I",   "",  MATCH_FENCE_I, MASK_FENCE | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, 0 },
{"rdcycle",   "I",   "d",  MATCH_RDCYCLE, MASK_RDCYCLE, match_opcode, INSN_ALIAS },
{"rdinstret", "I",   "d",  MATCH_RDINSTRET, MASK_RDINSTRET, match_opcode, INSN_ALIAS },
{"rdtime",    "I",   "d",  MATCH_RDTIME, MASK_RDTIME, match_opcode, INSN_ALIAS },
{"rdcycleh",  "32I", "d",  MATCH_RDCYCLEH, MASK_RDCYCLEH, match_opcode, INSN_ALIAS },
{"rdinstreth","32I", "d",  MATCH_RDINSTRETH, MASK_RDINSTRETH, match_opcode, INSN_ALIAS },
{"rdtimeh",   "32I", "d",  MATCH_RDTIMEH, MASK_RDTIMEH, match_opcode, INSN_ALIAS },
{"ecall",     "I",   "",    MATCH_SCALL, MASK_SCALL, match_opcode, 0 },
{"scall",     "I",   "",    MATCH_SCALL, MASK_SCALL, match_opcode, 0 },
{"xori",      "I",   "d,s,j",  MATCH_XORI, MASK_XORI, match_opcode, 0 },
{"xor",       "C",   "Cs,Cw,Ct",  MATCH_C_XOR, MASK_C_XOR, match_opcode, INSN_ALIAS },
{"xor",       "C",   "Cs,Ct,Cw",  MATCH_C_XOR, MASK_C_XOR, match_opcode, INSN_ALIAS },
{"xor",       "I",   "d,s,t",  MATCH_XOR, MASK_XOR, match_opcode, 0 },
{"xor",       "I",   "d,s,j",  MATCH_XORI, MASK_XORI, match_opcode, INSN_ALIAS },
{"lwu",       "64I", "d,o(s)",  MATCH_LWU, MASK_LWU, match_opcode, 0 },
{"lwu",       "64I", "d,A",  0, (int) M_LWU, match_never, INSN_MACRO },
{"ld",        "64C", "d,Cn(Cc)",  MATCH_C_LDSP, MASK_C_LDSP, match_rd_nonzero, INSN_ALIAS },
{"ld",        "64C", "Ct,Cl(Cs)",  MATCH_C_LD, MASK_C_LD, match_opcode, INSN_ALIAS },
{"ld",        "64I", "d,o(s)", MATCH_LD, MASK_LD, match_opcode, 0 },
{"ld",        "64I", "d,A",  0, (int) M_LD, match_never, INSN_MACRO },
{"sd",        "64C", "CV,CN(Cc)",  MATCH_C_SDSP, MASK_C_SDSP, match_opcode, INSN_ALIAS },
{"sd",        "64C", "Ct,Cl(Cs)",  MATCH_C_SD, MASK_C_SD, match_opcode, INSN_ALIAS },
{"sd",        "64I", "t,q(s)",  MATCH_SD, MASK_SD, match_opcode, 0 },
{"sd",        "64I", "t,A,s",  0, (int) M_SD, match_never, INSN_MACRO },
{"sext.w",    "64C", "d,CU",  MATCH_C_ADDIW, MASK_C_ADDIW | MASK_RVC_IMM, match_rd_nonzero, INSN_ALIAS },
{"sext.w",    "64I", "d,s",  MATCH_ADDIW, MASK_ADDIW | MASK_IMM, match_opcode, INSN_ALIAS },
{"addiw",     "64C", "d,CU,Cj",  MATCH_C_ADDIW, MASK_C_ADDIW, match_rd_nonzero, INSN_ALIAS },
{"addiw",     "64I", "d,s,j",  MATCH_ADDIW, MASK_ADDIW, match_opcode, 0 },
{"addw",      "64C", "Cs,Cw,Ct",  MATCH_C_ADDW, MASK_C_ADDW, match_opcode, INSN_ALIAS },
{"addw",      "64C", "Cs,Ct,Cw",  MATCH_C_ADDW, MASK_C_ADDW, match_opcode, INSN_ALIAS },
{"addw",      "64C", "d,CU,Cj",  MATCH_C_ADDIW, MASK_C_ADDIW, match_rd_nonzero, INSN_ALIAS },
{"addw",      "64I", "d,s,t",  MATCH_ADDW, MASK_ADDW, match_opcode, 0 },
{"addw",      "64I", "d,s,j",  MATCH_ADDIW, MASK_ADDIW, match_opcode, INSN_ALIAS },
{"negw",      "64I", "d,t",  MATCH_SUBW, MASK_SUBW | MASK_RS1, match_opcode, INSN_ALIAS }, /* sub 0 */
{"slliw",     "64I", "d,s,<",   MATCH_SLLIW, MASK_SLLIW, match_opcode, 0 },
{"sllw",      "64I", "d,s,t",   MATCH_SLLW, MASK_SLLW, match_opcode, 0 },
{"sllw",      "64I", "d,s,<",   MATCH_SLLIW, MASK_SLLIW, match_opcode, INSN_ALIAS },
{"srliw",     "64I", "d,s,<",   MATCH_SRLIW, MASK_SRLIW, match_opcode, 0 },
{"srlw",      "64I", "d,s,t",   MATCH_SRLW, MASK_SRLW, match_opcode, 0 },
{"srlw",      "64I", "d,s,<",   MATCH_SRLIW, MASK_SRLIW, match_opcode, INSN_ALIAS },
{"sraiw",     "64I", "d,s,<",   MATCH_SRAIW, MASK_SRAIW, match_opcode, 0 },
{"sraw",      "64I", "d,s,t",   MATCH_SRAW, MASK_SRAW, match_opcode, 0 },
{"sraw",      "64I", "d,s,<",   MATCH_SRAIW, MASK_SRAIW, match_opcode, INSN_ALIAS },
{"subw",      "64C", "Cs,Cw,Ct",  MATCH_C_SUBW, MASK_C_SUBW, match_opcode, INSN_ALIAS },
{"subw",      "64I", "d,s,t",  MATCH_SUBW, MASK_SUBW, match_opcode, 0 },

/* Atomic memory operation instruction subset */
{"lr.w",         "A",   "d,0(s)",    MATCH_LR_W, MASK_LR_W | MASK_AQRL, match_opcode, 0 },
{"sc.w",         "A",   "d,t,0(s)",  MATCH_SC_W, MASK_SC_W | MASK_AQRL, match_opcode, 0 },
{"amoadd.w",     "A",   "d,t,0(s)",  MATCH_AMOADD_W, MASK_AMOADD_W | MASK_AQRL, match_opcode, 0 },
{"amoswap.w",    "A",   "d,t,0(s)",  MATCH_AMOSWAP_W, MASK_AMOSWAP_W | MASK_AQRL, match_opcode, 0 },
{"amoand.w",     "A",   "d,t,0(s)",  MATCH_AMOAND_W, MASK_AMOAND_W | MASK_AQRL, match_opcode, 0 },
{"amoor.w",      "A",   "d,t,0(s)",  MATCH_AMOOR_W, MASK_AMOOR_W | MASK_AQRL, match_opcode, 0 },
{"amoxor.w",     "A",   "d,t,0(s)",  MATCH_AMOXOR_W, MASK_AMOXOR_W | MASK_AQRL, match_opcode, 0 },
{"amomax.w",     "A",   "d,t,0(s)",  MATCH_AMOMAX_W, MASK_AMOMAX_W | MASK_AQRL, match_opcode, 0 },
{"amomaxu.w",    "A",   "d,t,0(s)",  MATCH_AMOMAXU_W, MASK_AMOMAXU_W | MASK_AQRL, match_opcode, 0 },
{"amomin.w",     "A",   "d,t,0(s)",  MATCH_AMOMIN_W, MASK_AMOMIN_W | MASK_AQRL, match_opcode, 0 },
{"amominu.w",    "A",   "d,t,0(s)",  MATCH_AMOMINU_W, MASK_AMOMINU_W | MASK_AQRL, match_opcode, 0 },
{"lr.w.aq",      "A",   "d,0(s)",    MATCH_LR_W | MASK_AQ, MASK_LR_W | MASK_AQRL, match_opcode, 0 },
{"sc.w.aq",      "A",   "d,t,0(s)",  MATCH_SC_W | MASK_AQ, MASK_SC_W | MASK_AQRL, match_opcode, 0 },
{"amoadd.w.aq",  "A",   "d,t,0(s)",  MATCH_AMOADD_W | MASK_AQ, MASK_AMOADD_W | MASK_AQRL, match_opcode, 0 },
{"amoswap.w.aq", "A",   "d,t,0(s)",  MATCH_AMOSWAP_W | MASK_AQ, MASK_AMOSWAP_W | MASK_AQRL, match_opcode, 0 },
{"amoand.w.aq",  "A",   "d,t,0(s)",  MATCH_AMOAND_W | MASK_AQ, MASK_AMOAND_W | MASK_AQRL, match_opcode, 0 },
{"amoor.w.aq",   "A",   "d,t,0(s)",  MATCH_AMOOR_W | MASK_AQ, MASK_AMOOR_W | MASK_AQRL, match_opcode, 0 },
{"amoxor.w.aq",  "A",   "d,t,0(s)",  MATCH_AMOXOR_W | MASK_AQ, MASK_AMOXOR_W | MASK_AQRL, match_opcode, 0 },
{"amomax.w.aq",  "A",   "d,t,0(s)",  MATCH_AMOMAX_W | MASK_AQ, MASK_AMOMAX_W | MASK_AQRL, match_opcode, 0 },
{"amomaxu.w.aq", "A",   "d,t,0(s)",  MATCH_AMOMAXU_W | MASK_AQ, MASK_AMOMAXU_W | MASK_AQRL, match_opcode, 0 },
{"amomin.w.aq",  "A",   "d,t,0(s)",  MATCH_AMOMIN_W | MASK_AQ, MASK_AMOMIN_W | MASK_AQRL, match_opcode, 0 },
{"amominu.w.aq", "A",   "d,t,0(s)",  MATCH_AMOMINU_W | MASK_AQ, MASK_AMOMINU_W | MASK_AQRL, match_opcode, 0 },
{"lr.w.rl",      "A",   "d,0(s)",    MATCH_LR_W | MASK_RL, MASK_LR_W | MASK_AQRL, match_opcode, 0 },
{"sc.w.rl",      "A",   "d,t,0(s)",  MATCH_SC_W | MASK_RL, MASK_SC_W | MASK_AQRL, match_opcode, 0 },
{"amoadd.w.rl",  "A",   "d,t,0(s)",  MATCH_AMOADD_W | MASK_RL, MASK_AMOADD_W | MASK_AQRL, match_opcode, 0 },
{"amoswap.w.rl", "A",   "d,t,0(s)",  MATCH_AMOSWAP_W | MASK_RL, MASK_AMOSWAP_W | MASK_AQRL, match_opcode, 0 },
{"amoand.w.rl",  "A",   "d,t,0(s)",  MATCH_AMOAND_W | MASK_RL, MASK_AMOAND_W | MASK_AQRL, match_opcode, 0 },
{"amoor.w.rl",   "A",   "d,t,0(s)",  MATCH_AMOOR_W | MASK_RL, MASK_AMOOR_W | MASK_AQRL, match_opcode, 0 },
{"amoxor.w.rl",  "A",   "d,t,0(s)",  MATCH_AMOXOR_W | MASK_RL, MASK_AMOXOR_W | MASK_AQRL, match_opcode, 0 },
{"amomax.w.rl",  "A",   "d,t,0(s)",  MATCH_AMOMAX_W | MASK_RL, MASK_AMOMAX_W | MASK_AQRL, match_opcode, 0 },
{"amomaxu.w.rl", "A",   "d,t,0(s)",  MATCH_AMOMAXU_W | MASK_RL, MASK_AMOMAXU_W | MASK_AQRL, match_opcode, 0 },
{"amomin.w.rl",  "A",   "d,t,0(s)",  MATCH_AMOMIN_W | MASK_RL, MASK_AMOMIN_W | MASK_AQRL, match_opcode, 0 },
{"amominu.w.rl", "A",   "d,t,0(s)",  MATCH_AMOMINU_W | MASK_RL, MASK_AMOMINU_W | MASK_AQRL, match_opcode, 0 },
{"lr.w.aqrl",    "A",   "d,0(s)",    MATCH_LR_W | MASK_AQRL, MASK_LR_W | MASK_AQRL, match_opcode, 0 },
{"sc.w.aqrl",    "A",   "d,t,0(s)",  MATCH_SC_W | MASK_AQRL, MASK_SC_W | MASK_AQRL, match_opcode, 0 },
{"amoadd.w.aqrl",  "A",   "d,t,0(s)",  MATCH_AMOADD_W | MASK_AQRL, MASK_AMOADD_W | MASK_AQRL, match_opcode, 0 },
{"amoswap.w.aqrl", "A",   "d,t,0(s)",  MATCH_AMOSWAP_W | MASK_AQRL, MASK_AMOSWAP_W | MASK_AQRL, match_opcode, 0 },
{"amoand.w.aqrl",  "A",   "d,t,0(s)",  MATCH_AMOAND_W | MASK_AQRL, MASK_AMOAND_W | MASK_AQRL, match_opcode, 0 },
{"amoor.w.aqrl",   "A",   "d,t,0(s)",  MATCH_AMOOR_W | MASK_AQRL, MASK_AMOOR_W | MASK_AQRL, match_opcode, 0 },
{"amoxor.w.aqrl",  "A",   "d,t,0(s)",  MATCH_AMOXOR_W | MASK_AQRL, MASK_AMOXOR_W | MASK_AQRL, match_opcode, 0 },
{"amomax.w.aqrl",  "A",   "d,t,0(s)",  MATCH_AMOMAX_W | MASK_AQRL, MASK_AMOMAX_W | MASK_AQRL, match_opcode, 0 },
{"amomaxu.w.aqrl", "A",   "d,t,0(s)",  MATCH_AMOMAXU_W | MASK_AQRL, MASK_AMOMAXU_W | MASK_AQRL, match_opcode, 0 },
{"amomin.w.aqrl",  "A",   "d,t,0(s)",  MATCH_AMOMIN_W | MASK_AQRL, MASK_AMOMIN_W | MASK_AQRL, match_opcode, 0 },
{"amominu.w.aqrl", "A",   "d,t,0(s)",  MATCH_AMOMINU_W | MASK_AQRL, MASK_AMOMINU_W | MASK_AQRL, match_opcode, 0 },
{"lr.d",         "64A", "d,0(s)",    MATCH_LR_D, MASK_LR_D | MASK_AQRL, match_opcode, 0 },
{"sc.d",         "64A", "d,t,0(s)",  MATCH_SC_D, MASK_SC_D | MASK_AQRL, match_opcode, 0 },
{"amoadd.d",     "64A", "d,t,0(s)",  MATCH_AMOADD_D, MASK_AMOADD_D | MASK_AQRL, match_opcode, 0 },
{"amoswap.d",    "64A", "d,t,0(s)",  MATCH_AMOSWAP_D, MASK_AMOSWAP_D | MASK_AQRL, match_opcode, 0 },
{"amoand.d",     "64A", "d,t,0(s)",  MATCH_AMOAND_D, MASK_AMOAND_D | MASK_AQRL, match_opcode, 0 },
{"amoor.d",      "64A", "d,t,0(s)",  MATCH_AMOOR_D, MASK_AMOOR_D | MASK_AQRL, match_opcode, 0 },
{"amoxor.d",     "64A", "d,t,0(s)",  MATCH_AMOXOR_D, MASK_AMOXOR_D | MASK_AQRL, match_opcode, 0 },
{"amomax.d",     "64A", "d,t,0(s)",  MATCH_AMOMAX_D, MASK_AMOMAX_D | MASK_AQRL, match_opcode, 0 },
{"amomaxu.d",    "64A", "d,t,0(s)",  MATCH_AMOMAXU_D, MASK_AMOMAXU_D | MASK_AQRL, match_opcode, 0 },
{"amomin.d",     "64A", "d,t,0(s)",  MATCH_AMOMIN_D, MASK_AMOMIN_D | MASK_AQRL, match_opcode, 0 },
{"amominu.d",    "64A", "d,t,0(s)",  MATCH_AMOMINU_D, MASK_AMOMINU_D | MASK_AQRL, match_opcode, 0 },
{"lr.d.aq",      "64A", "d,0(s)",    MATCH_LR_D | MASK_AQ, MASK_LR_D | MASK_AQRL, match_opcode, 0 },
{"sc.d.aq",      "64A", "d,t,0(s)",  MATCH_SC_D | MASK_AQ, MASK_SC_D | MASK_AQRL, match_opcode, 0 },
{"amoadd.d.aq",  "64A", "d,t,0(s)",  MATCH_AMOADD_D | MASK_AQ, MASK_AMOADD_D | MASK_AQRL, match_opcode, 0 },
{"amoswap.d.aq", "64A", "d,t,0(s)",  MATCH_AMOSWAP_D | MASK_AQ, MASK_AMOSWAP_D | MASK_AQRL, match_opcode, 0 },
{"amoand.d.aq",  "64A", "d,t,0(s)",  MATCH_AMOAND_D | MASK_AQ, MASK_AMOAND_D | MASK_AQRL, match_opcode, 0 },
{"amoor.d.aq",   "64A", "d,t,0(s)",  MATCH_AMOOR_D | MASK_AQ, MASK_AMOOR_D | MASK_AQRL, match_opcode, 0 },
{"amoxor.d.aq",  "64A", "d,t,0(s)",  MATCH_AMOXOR_D | MASK_AQ, MASK_AMOXOR_D | MASK_AQRL, match_opcode, 0 },
{"amomax.d.aq",  "64A", "d,t,0(s)",  MATCH_AMOMAX_D | MASK_AQ, MASK_AMOMAX_D | MASK_AQRL, match_opcode, 0 },
{"amomaxu.d.aq", "64A", "d,t,0(s)",  MATCH_AMOMAXU_D | MASK_AQ, MASK_AMOMAXU_D | MASK_AQRL, match_opcode, 0 },
{"amomin.d.aq",  "64A", "d,t,0(s)",  MATCH_AMOMIN_D | MASK_AQ, MASK_AMOMIN_D | MASK_AQRL, match_opcode, 0 },
{"amominu.d.aq", "64A", "d,t,0(s)",  MATCH_AMOMINU_D | MASK_AQ, MASK_AMOMINU_D | MASK_AQRL, match_opcode, 0 },
{"lr.d.rl",      "64A", "d,0(s)",    MATCH_LR_D | MASK_RL, MASK_LR_D | MASK_AQRL, match_opcode, 0 },
{"sc.d.rl",      "64A", "d,t,0(s)",  MATCH_SC_D | MASK_RL, MASK_SC_D | MASK_AQRL, match_opcode, 0 },
{"amoadd.d.rl",  "64A", "d,t,0(s)",  MATCH_AMOADD_D | MASK_RL, MASK_AMOADD_D | MASK_AQRL, match_opcode, 0 },
{"amoswap.d.rl", "64A", "d,t,0(s)",  MATCH_AMOSWAP_D | MASK_RL, MASK_AMOSWAP_D | MASK_AQRL, match_opcode, 0 },
{"amoand.d.rl",  "64A", "d,t,0(s)",  MATCH_AMOAND_D | MASK_RL, MASK_AMOAND_D | MASK_AQRL, match_opcode, 0 },
{"amoor.d.rl",   "64A", "d,t,0(s)",  MATCH_AMOOR_D | MASK_RL, MASK_AMOOR_D | MASK_AQRL, match_opcode, 0 },
{"amoxor.d.rl",  "64A", "d,t,0(s)",  MATCH_AMOXOR_D | MASK_RL, MASK_AMOXOR_D | MASK_AQRL, match_opcode, 0 },
{"amomax.d.rl",  "64A", "d,t,0(s)",  MATCH_AMOMAX_D | MASK_RL, MASK_AMOMAX_D | MASK_AQRL, match_opcode, 0 },
{"amomaxu.d.rl", "64A", "d,t,0(s)",  MATCH_AMOMAXU_D | MASK_RL, MASK_AMOMAXU_D | MASK_AQRL, match_opcode, 0 },
{"amomin.d.rl",  "64A", "d,t,0(s)",  MATCH_AMOMIN_D | MASK_RL, MASK_AMOMIN_D | MASK_AQRL, match_opcode, 0 },
{"amominu.d.rl", "64A", "d,t,0(s)",  MATCH_AMOMINU_D | MASK_RL, MASK_AMOMINU_D | MASK_AQRL, match_opcode, 0 },
{"lr.d.aqrl",    "64A", "d,0(s)",    MATCH_LR_D | MASK_AQRL, MASK_LR_D | MASK_AQRL, match_opcode, 0 },
{"sc.d.aqrl",    "64A", "d,t,0(s)",  MATCH_SC_D | MASK_AQRL, MASK_SC_D | MASK_AQRL, match_opcode, 0 },
{"amoadd.d.aqrl",  "64A", "d,t,0(s)",  MATCH_AMOADD_D | MASK_AQRL, MASK_AMOADD_D | MASK_AQRL, match_opcode, 0 },
{"amoswap.d.aqrl", "64A", "d,t,0(s)",  MATCH_AMOSWAP_D | MASK_AQRL, MASK_AMOSWAP_D | MASK_AQRL, match_opcode, 0 },
{"amoand.d.aqrl",  "64A", "d,t,0(s)",  MATCH_AMOAND_D | MASK_AQRL, MASK_AMOAND_D | MASK_AQRL, match_opcode, 0 },
{"amoor.d.aqrl",   "64A", "d,t,0(s)",  MATCH_AMOOR_D | MASK_AQRL, MASK_AMOOR_D | MASK_AQRL, match_opcode, 0 },
{"amoxor.d.aqrl",  "64A", "d,t,0(s)",  MATCH_AMOXOR_D | MASK_AQRL, MASK_AMOXOR_D | MASK_AQRL, match_opcode, 0 },
{"amomax.d.aqrl",  "64A", "d,t,0(s)",  MATCH_AMOMAX_D | MASK_AQRL, MASK_AMOMAX_D | MASK_AQRL, match_opcode, 0 },
{"amomaxu.d.aqrl", "64A", "d,t,0(s)",  MATCH_AMOMAXU_D | MASK_AQRL, MASK_AMOMAXU_D | MASK_AQRL, match_opcode, 0 },
{"amomin.d.aqrl",  "64A", "d,t,0(s)",  MATCH_AMOMIN_D | MASK_AQRL, MASK_AMOMIN_D | MASK_AQRL, match_opcode, 0 },
{"amominu.d.aqrl", "64A", "d,t,0(s)",  MATCH_AMOMINU_D | MASK_AQRL, MASK_AMOMINU_D | MASK_AQRL, match_opcode, 0 },

/* Multiply/Divide instruction subset */
{"mul",       "M",   "d,s,t",  MATCH_MUL, MASK_MUL, match_opcode, 0 },
{"mulh",      "M",   "d,s,t",  MATCH_MULH, MASK_MULH, match_opcode, 0 },
{"mulhu",     "M",   "d,s,t",  MATCH_MULHU, MASK_MULHU, match_opcode, 0 },
{"mulhsu",    "M",   "d,s,t",  MATCH_MULHSU, MASK_MULHSU, match_opcode, 0 },
{"div",       "M",   "d,s,t",  MATCH_DIV, MASK_DIV, match_opcode, 0 },
{"divu",      "M",   "d,s,t",  MATCH_DIVU, MASK_DIVU, match_opcode, 0 },
{"rem",       "M",   "d,s,t",  MATCH_REM, MASK_REM, match_opcode, 0 },
{"remu",      "M",   "d,s,t",  MATCH_REMU, MASK_REMU, match_opcode, 0 },
{"mulw",      "64M", "d,s,t",  MATCH_MULW, MASK_MULW, match_opcode, 0 },
{"divw",      "64M", "d,s,t",  MATCH_DIVW, MASK_DIVW, match_opcode, 0 },
{"divuw",     "64M", "d,s,t",  MATCH_DIVUW, MASK_DIVUW, match_opcode, 0 },
{"remw",      "64M", "d,s,t",  MATCH_REMW, MASK_REMW, match_opcode, 0 },
{"remuw",     "64M", "d,s,t",  MATCH_REMUW, MASK_REMUW, match_opcode, 0 },

/* Single-precision floating-point instruction subset */
{"frsr",      "F",   "d",  MATCH_FRCSR, MASK_FRCSR, match_opcode, 0 },
{"fssr",      "F",   "s",  MATCH_FSCSR, MASK_FSCSR | MASK_RD, match_opcode, 0 },
{"fssr",      "F",   "d,s",  MATCH_FSCSR, MASK_FSCSR, match_opcode, 0 },
{"frcsr",     "F",   "d",  MATCH_FRCSR, MASK_FRCSR, match_opcode, 0 },
{"fscsr",     "F",   "s",  MATCH_FSCSR, MASK_FSCSR | MASK_RD, match_opcode, 0 },
{"fscsr",     "F",   "d,s",  MATCH_FSCSR, MASK_FSCSR, match_opcode, 0 },
{"frrm",      "F",   "d",  MATCH_FRRM, MASK_FRRM, match_opcode, 0 },
{"fsrm",      "F",   "s",  MATCH_FSRM, MASK_FSRM | MASK_RD, match_opcode, 0 },
{"fsrm",      "F",   "d,s",  MATCH_FSRM, MASK_FSRM, match_opcode, 0 },
{"frflags",   "F",   "d",  MATCH_FRFLAGS, MASK_FRFLAGS, match_opcode, 0 },
{"fsflags",   "F",   "s",  MATCH_FSFLAGS, MASK_FSFLAGS | MASK_RD, match_opcode, 0 },
{"fsflags",   "F",   "d,s",  MATCH_FSFLAGS, MASK_FSFLAGS, match_opcode, 0 },
{"flw",       "32C", "D,Cm(Cc)",  MATCH_C_FLWSP, MASK_C_FLWSP, match_opcode, INSN_ALIAS },
{"flw",       "32C", "CD,Ck(Cs)",  MATCH_C_FLW, MASK_C_FLW, match_opcode, INSN_ALIAS },
{"flw",       "F",   "D,o(s)",  MATCH_FLW, MASK_FLW, match_opcode, 0 },
{"flw",       "F",   "D,A,s",  0, (int) M_FLW, match_never, INSN_MACRO },
{"fsw",       "32C", "CT,CM(Cc)",  MATCH_C_FSWSP, MASK_C_FSWSP, match_opcode, INSN_ALIAS },
{"fsw",       "32C", "CD,Ck(Cs)",  MATCH_C_FSW, MASK_C_FSW, match_opcode, INSN_ALIAS },
{"fsw",       "F",   "T,q(s)",  MATCH_FSW, MASK_FSW, match_opcode, 0 },
{"fsw",       "F",   "T,A,s",  0, (int) M_FSW, match_never, INSN_MACRO },
{"fmv.x.s",   "F",   "d,S",  MATCH_FMV_X_S, MASK_FMV_X_S, match_opcode, 0 },
{"fmv.s.x",   "F",   "D,s",  MATCH_FMV_S_X, MASK_FMV_S_X, match_opcode, 0 },
{"fmv.s",     "F",   "D,U",  MATCH_FSGNJ_S, MASK_FSGNJ_S, match_rs1_eq_rs2, INSN_ALIAS },
{"fneg.s",    "F",   "D,U",  MATCH_FSGNJN_S, MASK_FSGNJN_S, match_rs1_eq_rs2, INSN_ALIAS },
{"fabs.s",    "F",   "D,U",  MATCH_FSGNJX_S, MASK_FSGNJX_S, match_rs1_eq_rs2, INSN_ALIAS },
{"fsgnj.s",   "F",   "D,S,T",  MATCH_FSGNJ_S, MASK_FSGNJ_S, match_opcode, 0 },
{"fsgnjn.s",  "F",   "D,S,T",  MATCH_FSGNJN_S, MASK_FSGNJN_S, match_opcode, 0 },
{"fsgnjx.s",  "F",   "D,S,T",  MATCH_FSGNJX_S, MASK_FSGNJX_S, match_opcode, 0 },
{"fadd.s",    "F",   "D,S,T",  MATCH_FADD_S | MASK_RM, MASK_FADD_S | MASK_RM, match_opcode, 0 },
{"fadd.s",    "F",   "D,S,T,m",  MATCH_FADD_S, MASK_FADD_S, match_opcode, 0 },
{"fsub.s",    "F",   "D,S,T",  MATCH_FSUB_S | MASK_RM, MASK_FSUB_S | MASK_RM, match_opcode, 0 },
{"fsub.s",    "F",   "D,S,T,m",  MATCH_FSUB_S, MASK_FSUB_S, match_opcode, 0 },
{"fmul.s",    "F",   "D,S,T",  MATCH_FMUL_S | MASK_RM, MASK_FMUL_S | MASK_RM, match_opcode, 0 },
{"fmul.s",    "F",   "D,S,T,m",  MATCH_FMUL_S, MASK_FMUL_S, match_opcode, 0 },
{"fdiv.s",    "F",   "D,S,T",  MATCH_FDIV_S | MASK_RM, MASK_FDIV_S | MASK_RM, match_opcode, 0 },
{"fdiv.s",    "F",   "D,S,T,m",  MATCH_FDIV_S, MASK_FDIV_S, match_opcode, 0 },
{"fsqrt.s",   "F",   "D,S",  MATCH_FSQRT_S | MASK_RM, MASK_FSQRT_S | MASK_RM, match_opcode, 0 },
{"fsqrt.s",   "F",   "D,S,m",  MATCH_FSQRT_S, MASK_FSQRT_S, match_opcode, 0 },
{"fmin.s",    "F",   "D,S,T",  MATCH_FMIN_S, MASK_FMIN_S, match_opcode, 0 },
{"fmax.s",    "F",   "D,S,T",  MATCH_FMAX_S, MASK_FMAX_S, match_opcode, 0 },
{"fmadd.s",   "F",   "D,S,T,R",  MATCH_FMADD_S | MASK_RM, MASK_FMADD_S | MASK_RM, match_opcode, 0 },
{"fmadd.s",   "F",   "D,S,T,R,m",  MATCH_FMADD_S, MASK_FMADD_S, match_opcode, 0 },
{"fnmadd.s",  "F",   "D,S,T,R",  MATCH_FNMADD_S | MASK_RM, MASK_FNMADD_S | MASK_RM, match_opcode, 0 },
{"fnmadd.s",  "F",   "D,S,T,R,m",  MATCH_FNMADD_S, MASK_FNMADD_S, match_opcode, 0 },
{"fmsub.s",   "F",   "D,S,T,R",  MATCH_FMSUB_S | MASK_RM, MASK_FMSUB_S | MASK_RM, match_opcode, 0 },
{"fmsub.s",   "F",   "D,S,T,R,m",  MATCH_FMSUB_S, MASK_FMSUB_S, match_opcode, 0 },
{"fnmsub.s",  "F",   "D,S,T,R",  MATCH_FNMSUB_S | MASK_RM, MASK_FNMSUB_S | MASK_RM, match_opcode, 0 },
{"fnmsub.s",  "F",   "D,S,T,R,m",  MATCH_FNMSUB_S, MASK_FNMSUB_S, match_opcode, 0 },
{"fcvt.w.s",  "F",   "d,S",  MATCH_FCVT_W_S | MASK_RM, MASK_FCVT_W_S | MASK_RM, match_opcode, 0 },
{"fcvt.w.s",  "F",   "d,S,m",  MATCH_FCVT_W_S, MASK_FCVT_W_S, match_opcode, 0 },
{"fcvt.wu.s", "F",   "d,S",  MATCH_FCVT_WU_S | MASK_RM, MASK_FCVT_WU_S | MASK_RM, match_opcode, 0 },
{"fcvt.wu.s", "F",   "d,S,m",  MATCH_FCVT_WU_S, MASK_FCVT_WU_S, match_opcode, 0 },
{"fcvt.s.w",  "F",   "D,s",  MATCH_FCVT_S_W | MASK_RM, MASK_FCVT_S_W | MASK_RM, match_opcode, 0 },
{"fcvt.s.w",  "F",   "D,s,m",  MATCH_FCVT_S_W, MASK_FCVT_S_W, match_opcode, 0 },
{"fcvt.s.wu", "F",   "D,s",  MATCH_FCVT_S_WU | MASK_RM, MASK_FCVT_S_W | MASK_RM, match_opcode, 0 },
{"fcvt.s.wu", "F",   "D,s,m",  MATCH_FCVT_S_WU, MASK_FCVT_S_WU, match_opcode, 0 },
{"fclass.s",  "F",   "d,S",  MATCH_FCLASS_S, MASK_FCLASS_S, match_opcode, 0 },
{"feq.s",     "F",   "d,S,T",    MATCH_FEQ_S, MASK_FEQ_S, match_opcode, 0 },
{"flt.s",     "F",   "d,S,T",    MATCH_FLT_S, MASK_FLT_S, match_opcode, 0 },
{"fle.s",     "F",   "d,S,T",    MATCH_FLE_S, MASK_FLE_S, match_opcode, 0 },
{"fgt.s",     "F",   "d,T,S",    MATCH_FLT_S, MASK_FLT_S, match_opcode, 0 },
{"fge.s",     "F",   "d,T,S",    MATCH_FLE_S, MASK_FLE_S, match_opcode, 0 },
{"fcvt.l.s",  "64F", "d,S",  MATCH_FCVT_L_S | MASK_RM, MASK_FCVT_L_S | MASK_RM, match_opcode, 0 },
{"fcvt.l.s",  "64F", "d,S,m",  MATCH_FCVT_L_S, MASK_FCVT_L_S, match_opcode, 0 },
{"fcvt.lu.s", "64F", "d,S",  MATCH_FCVT_LU_S | MASK_RM, MASK_FCVT_LU_S | MASK_RM, match_opcode, 0 },
{"fcvt.lu.s", "64F", "d,S,m",  MATCH_FCVT_LU_S, MASK_FCVT_LU_S, match_opcode, 0 },
{"fcvt.s.l",  "64F", "D,s",  MATCH_FCVT_S_L | MASK_RM, MASK_FCVT_S_L | MASK_RM, match_opcode, 0 },
{"fcvt.s.l",  "64F", "D,s,m",  MATCH_FCVT_S_L, MASK_FCVT_S_L, match_opcode, 0 },
{"fcvt.s.lu", "64F", "D,s",  MATCH_FCVT_S_LU | MASK_RM, MASK_FCVT_S_L | MASK_RM, match_opcode, 0 },
{"fcvt.s.lu", "64F", "D,s,m",  MATCH_FCVT_S_LU, MASK_FCVT_S_LU, match_opcode, 0 },

/* Double-precision floating-point instruction subset */
{"fld",       "C",   "D,Cn(Cc)",  MATCH_C_FLDSP, MASK_C_FLDSP, match_opcode, INSN_ALIAS },
{"fld",       "C",   "CD,Cl(Cs)",  MATCH_C_FLD, MASK_C_FLD, match_opcode, INSN_ALIAS },
{"fld",       "D",   "D,o(s)",  MATCH_FLD, MASK_FLD, match_opcode, 0 },
{"fld",       "D",   "D,A,s",  0, (int) M_FLD, match_never, INSN_MACRO },
{"fsd",       "C",   "CT,CN(Cc)",  MATCH_C_FSDSP, MASK_C_FSDSP, match_opcode, INSN_ALIAS },
{"fsd",       "C",   "CD,Cl(Cs)",  MATCH_C_FSD, MASK_C_FSD, match_opcode, INSN_ALIAS },
{"fsd",       "D",   "T,q(s)",  MATCH_FSD, MASK_FSD, match_opcode, 0 },
{"fsd",       "D",   "T,A,s",  0, (int) M_FSD, match_never, INSN_MACRO },
{"fmv.d",     "D",   "D,U",  MATCH_FSGNJ_D, MASK_FSGNJ_D, match_rs1_eq_rs2, INSN_ALIAS },
{"fneg.d",    "D",   "D,U",  MATCH_FSGNJN_D, MASK_FSGNJN_D, match_rs1_eq_rs2, INSN_ALIAS },
{"fabs.d",    "D",   "D,U",  MATCH_FSGNJX_D, MASK_FSGNJX_D, match_rs1_eq_rs2, INSN_ALIAS },
{"fsgnj.d",   "D",   "D,S,T",  MATCH_FSGNJ_D, MASK_FSGNJ_D, match_opcode, 0 },
{"fsgnjn.d",  "D",   "D,S,T",  MATCH_FSGNJN_D, MASK_FSGNJN_D, match_opcode, 0 },
{"fsgnjx.d",  "D",   "D,S,T",  MATCH_FSGNJX_D, MASK_FSGNJX_D, match_opcode, 0 },
{"fadd.d",    "D",   "D,S,T",  MATCH_FADD_D | MASK_RM, MASK_FADD_D | MASK_RM, match_opcode, 0 },
{"fadd.d",    "D",   "D,S,T,m",  MATCH_FADD_D, MASK_FADD_D, match_opcode, 0 },
{"fsub.d",    "D",   "D,S,T",  MATCH_FSUB_D | MASK_RM, MASK_FSUB_D | MASK_RM, match_opcode, 0 },
{"fsub.d",    "D",   "D,S,T,m",  MATCH_FSUB_D, MASK_FSUB_D, match_opcode, 0 },
{"fmul.d",    "D",   "D,S,T",  MATCH_FMUL_D | MASK_RM, MASK_FMUL_D | MASK_RM, match_opcode, 0 },
{"fmul.d",    "D",   "D,S,T,m",  MATCH_FMUL_D, MASK_FMUL_D, match_opcode, 0 },
{"fdiv.d",    "D",   "D,S,T",  MATCH_FDIV_D | MASK_RM, MASK_FDIV_D | MASK_RM, match_opcode, 0 },
{"fdiv.d",    "D",   "D,S,T,m",  MATCH_FDIV_D, MASK_FDIV_D, match_opcode, 0 },
{"fsqrt.d",   "D",   "D,S",  MATCH_FSQRT_D | MASK_RM, MASK_FSQRT_D | MASK_RM, match_opcode, 0 },
{"fsqrt.d",   "D",   "D,S,m",  MATCH_FSQRT_D, MASK_FSQRT_D, match_opcode, 0 },
{"fmin.d",    "D",   "D,S,T",  MATCH_FMIN_D, MASK_FMIN_D, match_opcode, 0 },
{"fmax.d",    "D",   "D,S,T",  MATCH_FMAX_D, MASK_FMAX_D, match_opcode, 0 },
{"fmadd.d",   "D",   "D,S,T,R",  MATCH_FMADD_D | MASK_RM, MASK_FMADD_D | MASK_RM, match_opcode, 0 },
{"fmadd.d",   "D",   "D,S,T,R,m",  MATCH_FMADD_D, MASK_FMADD_D, match_opcode, 0 },
{"fnmadd.d",  "D",   "D,S,T,R",  MATCH_FNMADD_D | MASK_RM, MASK_FNMADD_D | MASK_RM, match_opcode, 0 },
{"fnmadd.d",  "D",   "D,S,T,R,m",  MATCH_FNMADD_D, MASK_FNMADD_D, match_opcode, 0 },
{"fmsub.d",   "D",   "D,S,T,R",  MATCH_FMSUB_D | MASK_RM, MASK_FMSUB_D | MASK_RM, match_opcode, 0 },
{"fmsub.d",   "D",   "D,S,T,R,m",  MATCH_FMSUB_D, MASK_FMSUB_D, match_opcode, 0 },
{"fnmsub.d",  "D",   "D,S,T,R",  MATCH_FNMSUB_D | MASK_RM, MASK_FNMSUB_D | MASK_RM, match_opcode, 0 },
{"fnmsub.d",  "D",   "D,S,T,R,m",  MATCH_FNMSUB_D, MASK_FNMSUB_D, match_opcode, 0 },
{"fcvt.w.d",  "D",   "d,S",  MATCH_FCVT_W_D | MASK_RM, MASK_FCVT_W_D | MASK_RM, match_opcode, 0 },
{"fcvt.w.d",  "D",   "d,S,m",  MATCH_FCVT_W_D, MASK_FCVT_W_D, match_opcode, 0 },
{"fcvt.wu.d", "D",   "d,S",  MATCH_FCVT_WU_D | MASK_RM, MASK_FCVT_WU_D | MASK_RM, match_opcode, 0 },
{"fcvt.wu.d", "D",   "d,S,m",  MATCH_FCVT_WU_D, MASK_FCVT_WU_D, match_opcode, 0 },
{"fcvt.d.w",  "D",   "D,s",  MATCH_FCVT_D_W, MASK_FCVT_D_W | MASK_RM, match_opcode, 0 },
{"fcvt.d.wu", "D",   "D,s",  MATCH_FCVT_D_WU, MASK_FCVT_D_WU | MASK_RM, match_opcode, 0 },
{"fcvt.d.s",  "D",   "D,S",  MATCH_FCVT_D_S, MASK_FCVT_D_S | MASK_RM, match_opcode, 0 },
{"fcvt.s.d",  "D",   "D,S",  MATCH_FCVT_S_D | MASK_RM, MASK_FCVT_S_D | MASK_RM, match_opcode, 0 },
{"fcvt.s.d",  "D",   "D,S,m",  MATCH_FCVT_S_D, MASK_FCVT_S_D, match_opcode, 0 },
{"fclass.d",  "D",   "d,S",  MATCH_FCLASS_D, MASK_FCLASS_D, match_opcode, 0 },
{"feq.d",     "D",   "d,S,T",    MATCH_FEQ_D, MASK_FEQ_D, match_opcode, 0 },
{"flt.d",     "D",   "d,S,T",    MATCH_FLT_D, MASK_FLT_D, match_opcode, 0 },
{"fle.d",     "D",   "d,S,T",    MATCH_FLE_D, MASK_FLE_D, match_opcode, 0 },
{"fgt.d",     "D",   "d,T,S",    MATCH_FLT_D, MASK_FLT_D, match_opcode, 0 },
{"fge.d",     "D",   "d,T,S",    MATCH_FLE_D, MASK_FLE_D, match_opcode, 0 },
{"fmv.x.d",   "64D", "d,S",  MATCH_FMV_X_D, MASK_FMV_X_D, match_opcode, 0 },
{"fmv.d.x",   "64D", "D,s",  MATCH_FMV_D_X, MASK_FMV_D_X, match_opcode, 0 },
{"fcvt.l.d",  "64D", "d,S",  MATCH_FCVT_L_D | MASK_RM, MASK_FCVT_L_D | MASK_RM, match_opcode, 0 },
{"fcvt.l.d",  "64D", "d,S,m",  MATCH_FCVT_L_D, MASK_FCVT_L_D, match_opcode, 0 },
{"fcvt.lu.d", "64D", "d,S",  MATCH_FCVT_LU_D | MASK_RM, MASK_FCVT_LU_D | MASK_RM, match_opcode, 0 },
{"fcvt.lu.d", "64D", "d,S,m",  MATCH_FCVT_LU_D, MASK_FCVT_LU_D, match_opcode, 0 },
{"fcvt.d.l",  "64D", "D,s",  MATCH_FCVT_D_L | MASK_RM, MASK_FCVT_D_L | MASK_RM, match_opcode, 0 },
{"fcvt.d.l",  "64D", "D,s,m",  MATCH_FCVT_D_L, MASK_FCVT_D_L, match_opcode, 0 },
{"fcvt.d.lu", "64D", "D,s",  MATCH_FCVT_D_LU | MASK_RM, MASK_FCVT_D_L | MASK_RM, match_opcode, 0 },
{"fcvt.d.lu", "64D", "D,s,m",  MATCH_FCVT_D_LU, MASK_FCVT_D_LU, match_opcode, 0 },

/* Compressed instructions.  */
{"c.ebreak",  "C",   "",  MATCH_C_EBREAK, MASK_C_EBREAK, match_opcode, 0 },
{"c.jr",      "C",   "d",  MATCH_C_JR, MASK_C_JR, match_rd_nonzero, 0 },
{"c.jalr",    "C",   "d",  MATCH_C_JALR, MASK_C_JALR, match_rd_nonzero, 0 },
{"c.j",       "C",   "Ca",  MATCH_C_J, MASK_C_J, match_opcode, 0 },
{"c.jal",     "32C", "Ca",  MATCH_C_JAL, MASK_C_JAL, match_opcode, 0 },
{"c.beqz",    "C",   "Cs,Cp",  MATCH_C_BEQZ, MASK_C_BEQZ, match_opcode, 0 },
{"c.bnez",    "C",   "Cs,Cp",  MATCH_C_BNEZ, MASK_C_BNEZ, match_opcode, 0 },
{"c.lwsp",    "C",   "d,Cm(Cc)",  MATCH_C_LWSP, MASK_C_LWSP, match_rd_nonzero, 0 },
{"c.lw",      "C",   "Ct,Ck(Cs)",  MATCH_C_LW, MASK_C_LW, match_opcode, 0 },
{"c.swsp",    "C",   "CV,CM(Cc)",  MATCH_C_SWSP, MASK_C_SWSP, match_opcode, 0 },
{"c.sw",      "C",   "Ct,Ck(Cs)",  MATCH_C_SW, MASK_C_SW, match_opcode, 0 },
{"c.nop",     "C",   "",  MATCH_C_ADDI, 0xffff, match_opcode, 0 },
{"c.mv",      "C",   "d,CV",  MATCH_C_MV, MASK_C_MV, match_c_add, 0 },
{"c.lui",     "C",   "d,Cu",  MATCH_C_LUI, MASK_C_LUI, match_c_lui, 0 },
{"c.li",      "C",   "d,Cj",  MATCH_C_LI, MASK_C_LI, match_rd_nonzero, 0 },
{"c.addi4spn","C",   "Ct,Cc,CK", MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN, match_opcode, 0 },
{"c.addi16sp","C",   "Cc,CL", MATCH_C_ADDI16SP, MASK_C_ADDI16SP, match_opcode, 0 },
{"c.addi",    "C",   "d,Cj",  MATCH_C_ADDI, MASK_C_ADDI, match_rd_nonzero, 0 },
{"c.add",     "C",   "d,CV",  MATCH_C_ADD, MASK_C_ADD, match_c_add, 0 },
{"c.sub",     "C",   "Cs,Ct",  MATCH_C_SUB, MASK_C_SUB, match_opcode, 0 },
{"c.and",     "C",   "Cs,Ct",  MATCH_C_AND, MASK_C_AND, match_opcode, 0 },
{"c.or",      "C",   "Cs,Ct",  MATCH_C_OR, MASK_C_OR, match_opcode, 0 },
{"c.xor",     "C",   "Cs,Ct",  MATCH_C_XOR, MASK_C_XOR, match_opcode, 0 },
{"c.slli",    "C",   "d,C>",  MATCH_C_SLLI, MASK_C_SLLI, match_rd_nonzero, 0 },
{"c.srli",    "C",   "Cs,C>",  MATCH_C_SRLI, MASK_C_SRLI, match_opcode, 0 },
{"c.srai",    "C",   "Cs,C>",  MATCH_C_SRAI, MASK_C_SRAI, match_opcode, 0 },
{"c.andi",    "C",   "Cs,Cj",  MATCH_C_ANDI, MASK_C_ANDI, match_opcode, 0 },
{"c.addiw",   "64C", "d,Cj",  MATCH_C_ADDIW, MASK_C_ADDIW, match_rd_nonzero, 0 },
{"c.addw",    "64C", "Cs,Ct",  MATCH_C_ADDW, MASK_C_ADDW, match_opcode, 0 },
{"c.subw",    "64C", "Cs,Ct",  MATCH_C_SUBW, MASK_C_SUBW, match_opcode, 0 },
{"c.ldsp",    "64C", "d,Cn(Cc)",  MATCH_C_LDSP, MASK_C_LDSP, match_rd_nonzero, 0 },
{"c.ld",      "64C", "Ct,Cl(Cs)",  MATCH_C_LD, MASK_C_LD, match_opcode, 0 },
{"c.sdsp",    "64C", "CV,CN(Cc)",  MATCH_C_SDSP, MASK_C_SDSP, match_opcode, 0 },
{"c.sd",      "64C", "Ct,Cl(Cs)",  MATCH_C_SD, MASK_C_SD, match_opcode, 0 },
{"c.fldsp",   "C",   "D,Cn(Cc)",  MATCH_C_FLDSP, MASK_C_FLDSP, match_opcode, 0 },
{"c.fld",     "C",   "CD,Cl(Cs)",  MATCH_C_FLD, MASK_C_FLD, match_opcode, 0 },
{"c.fsdsp",   "C",   "CT,CN(Cc)",  MATCH_C_FSDSP, MASK_C_FSDSP, match_opcode, 0 },
{"c.fsd",     "C",   "CD,Cl(Cs)",  MATCH_C_FSD, MASK_C_FSD, match_opcode, 0 },
{"c.flwsp",   "32C", "D,Cm(Cc)",  MATCH_C_FLWSP, MASK_C_FLWSP, match_opcode, 0 },
{"c.flw",     "32C", "CD,Ck(Cs)",  MATCH_C_FLW, MASK_C_FLW, match_opcode, 0 },
{"c.fswsp",   "32C", "CT,CM(Cc)",  MATCH_C_FSWSP, MASK_C_FSWSP, match_opcode, 0 },
{"c.fsw",     "32C", "CD,Ck(Cs)",  MATCH_C_FSW, MASK_C_FSW, match_opcode, 0 },

/* Supervisor instructions */
{"csrr",      "I",   "d,E",  MATCH_CSRRS, MASK_CSRRS | MASK_RS1, match_opcode, INSN_ALIAS },
{"csrwi",     "I",   "E,Z",  MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrsi",     "I",   "E,Z",  MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrci",     "I",   "E,Z",  MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrw",      "I",   "E,s",  MATCH_CSRRW, MASK_CSRRW | MASK_RD, match_opcode, INSN_ALIAS },
{"csrw",      "I",   "E,Z",  MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrs",      "I",   "E,s",  MATCH_CSRRS, MASK_CSRRS | MASK_RD, match_opcode, INSN_ALIAS },
{"csrs",      "I",   "E,Z",  MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrc",      "I",   "E,s",  MATCH_CSRRC, MASK_CSRRC | MASK_RD, match_opcode, INSN_ALIAS },
{"csrc",      "I",   "E,Z",  MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
{"csrrwi",    "I",   "d,E,Z",  MATCH_CSRRWI, MASK_CSRRWI, match_opcode, 0 },
{"csrrsi",    "I",   "d,E,Z",  MATCH_CSRRSI, MASK_CSRRSI, match_opcode, 0 },
{"csrrci",    "I",   "d,E,Z",  MATCH_CSRRCI, MASK_CSRRCI, match_opcode, 0 },
{"csrrw",     "I",   "d,E,s",  MATCH_CSRRW, MASK_CSRRW, match_opcode, 0 },
{"csrrw",     "I",   "d,E,Z",  MATCH_CSRRWI, MASK_CSRRWI, match_opcode, INSN_ALIAS },
{"csrrs",     "I",   "d,E,s",  MATCH_CSRRS, MASK_CSRRS, match_opcode, 0 },
{"csrrs",     "I",   "d,E,Z",  MATCH_CSRRSI, MASK_CSRRSI, match_opcode, INSN_ALIAS },
{"csrrc",     "I",   "d,E,s",  MATCH_CSRRC, MASK_CSRRC, match_opcode, 0 },
{"csrrc",     "I",   "d,E,Z",  MATCH_CSRRCI, MASK_CSRRCI, match_opcode, INSN_ALIAS },
{"uret",      "I",   "",     MATCH_URET, MASK_URET, match_opcode, 0 },
{"sret",      "I",   "",     MATCH_SRET, MASK_SRET, match_opcode, 0 },
{"hret",      "I",   "",     MATCH_HRET, MASK_HRET, match_opcode, 0 },
{"mret",      "I",   "",     MATCH_MRET, MASK_MRET, match_opcode, 0 },
{"dret",      "I",   "",     MATCH_DRET, MASK_DRET, match_opcode, 0 },
{"sfence.vm", "I",   "",     MATCH_SFENCE_VM, MASK_SFENCE_VM | MASK_RS1, match_opcode, 0 },
{"sfence.vm", "I",   "s",    MATCH_SFENCE_VM, MASK_SFENCE_VM, match_opcode, 0 },
{"wfi",       "I",   "",     MATCH_WFI, MASK_WFI, match_opcode, 0 },

/* Terminate the list.  */
{0, 0, 0, 0, 0, 0, 0}
};