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ppsspp/ext/riscv-disas.cpp
Unknown W. Brackets 71fcc4a658 riscv: Fix disassembly of ra-relative jump.
2023-08-12 09:53:38 -07:00

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/*
* RISC-V Disassembler
*
* Copyright (c) 2016-2017 Michael Clark <michaeljclark@mac.com>
* Copyright (c) 2017-2018 SiFive, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define __STDC_FORMAT_MACROS 1
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <cinttypes>
#include "riscv-disas.h"
typedef struct {
const int op;
const rvc_constraint *constraints;
} rv_comp_data;
enum {
rvcd_imm_nz = 0x1,
rvcd_imm_nz_hint = 0x2
};
typedef struct {
const char * const name;
const rv_codec codec;
const char * const format;
const rv_comp_data *pseudo;
const short decomp_rv32;
const short decomp_rv64;
const short decomp_rv128;
const short decomp_data;
} rv_opcode_data;
/* register names */
static const char rv_ireg_name_sym[32][5] = {
"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",
};
static const char rv_freg_name_sym[32][5] = {
"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",
};
/* instruction formats */
static const char rv_fmt_none[] = "O\t";
static const char rv_fmt_rs1[] = "O\t1";
static const char rv_fmt_offset[] = "O\to";
static const char rv_fmt_pred_succ[] = "O\tp,s";
static const char rv_fmt_rs1_rs2[] = "O\t1,2";
static const char rv_fmt_rd_imm[] = "O\t0,i";
static const char rv_fmt_rd_offset[] = "O\t0,o";
static const char rv_fmt_rd_rs1_rs2[] = "O\t0,1,2";
static const char rv_fmt_frd_rs1[] = "O\t3,1";
static const char rv_fmt_rd_frs1[] = "O\t0,4";
static const char rv_fmt_rd_frs1_frs2[] = "O\t0,4,5";
static const char rv_fmt_frd_frs1[] = "O\t3,4";
static const char rv_fmt_frd_frs1_frs2[] = "O\t3,4,5";
static const char rv_fmt_rm_frd_frs1[] = "O\tr,3,4";
static const char rv_fmt_rm_frd_rs1[] = "O\tr,3,1";
static const char rv_fmt_rm_rd_frs1[] = "O\tr,0,4";
static const char rv_fmt_rm_frd_frs1_frs2[] = "O\tr,3,4,5";
static const char rv_fmt_rm_frd_frs1_frs2_frs3[] = "O\tr,3,4,5,6";
static const char rv_fmt_rd_rs1_imm[] = "O\t0,1,i";
static const char rv_fmt_rd_rs1_offset[] = "O\t0,1,i";
static const char rv_fmt_rd_offset_rs1[] = "O\t0,i(1)";
static const char rv_fmt_frd_offset_rs1[] = "O\t3,i(1)";
static const char rv_fmt_rd_csr_rs1[] = "O\t0,c,1";
static const char rv_fmt_rd_csr_zimm[] = "O\t0,c,7";
static const char rv_fmt_rs2_offset_rs1[] = "O\t2,i(1)";
static const char rv_fmt_frs2_offset_rs1[] = "O\t5,i(1)";
static const char rv_fmt_rs1_rs2_offset[] = "O\t1,2,o";
static const char rv_fmt_rs2_rs1_offset[] = "O\t2,1,o";
static const char rv_fmt_aqrl_rd_rs2_rs1[] = "OAR\t0,2,(1)";
static const char rv_fmt_aqrl_rd_rs1[] = "OAR\t0,(1)";
static const char rv_fmt_rd[] = "O\t0";
static const char rv_fmt_rd_zimm[] = "O\t0,7";
static const char rv_fmt_rd_rs1[] = "O\t0,1";
static const char rv_fmt_rd_rs2[] = "O\t0,2";
static const char rv_fmt_rs1_offset[] = "O\t1,o";
static const char rv_fmt_rs2_offset[] = "O\t2,o";
/* pseudo-instruction constraints */
static const rvc_constraint rvcc_last[] = { rvc_end };
static const rvc_constraint rvcc_imm_eq_zero[] = { rvc_imm_eq_zero, rvc_end };
static const rvc_constraint rvcc_imm_eq_n1[] = { rvc_imm_eq_n1, rvc_end };
static const rvc_constraint rvcc_imm_eq_p1[] = { rvc_imm_eq_p1, rvc_end };
static const rvc_constraint rvcc_rs1_eq_x0[] = { rvc_rs1_eq_x0, rvc_end };
static const rvc_constraint rvcc_rs2_eq_x0[] = { rvc_rs2_eq_x0, rvc_end };
static const rvc_constraint rvcc_rs2_eq_rs1[] = { rvc_rs2_eq_rs1, rvc_end };
static const rvc_constraint rvcc_jal_j[] = { rvc_rd_eq_x0, rvc_end };
static const rvc_constraint rvcc_jal_jal[] = { rvc_rd_eq_ra, rvc_end };
static const rvc_constraint rvcc_jalr_jr[] = { rvc_rd_eq_x0, rvc_imm_eq_zero, rvc_end };
static const rvc_constraint rvcc_jalr_jalr[] = { rvc_rd_eq_ra, rvc_imm_eq_zero, rvc_end };
static const rvc_constraint rvcc_jalr_ret[] = { rvc_rd_eq_x0, rvc_rs1_eq_ra, rvc_imm_eq_zero, rvc_end };
static const rvc_constraint rvcc_addi_nop[] = { rvc_rd_eq_x0, rvc_rs1_eq_x0, rvc_imm_eq_zero, rvc_end };
static const rvc_constraint rvcc_rdcycle[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc00, rvc_end };
static const rvc_constraint rvcc_rdtime[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc01, rvc_end };
static const rvc_constraint rvcc_rdinstret[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc02, rvc_end };
static const rvc_constraint rvcc_rdcycleh[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc80, rvc_end };
static const rvc_constraint rvcc_rdtimeh[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc81, rvc_end };
static const rvc_constraint rvcc_rdinstreth[] = { rvc_rs1_eq_x0, rvc_csr_eq_0xc82, rvc_end };
static const rvc_constraint rvcc_frcsr[] = { rvc_rs1_eq_x0, rvc_csr_eq_0x003, rvc_end };
static const rvc_constraint rvcc_frrm[] = { rvc_rs1_eq_x0, rvc_csr_eq_0x002, rvc_end };
static const rvc_constraint rvcc_frflags[] = { rvc_rs1_eq_x0, rvc_csr_eq_0x001, rvc_end };
static const rvc_constraint rvcc_fscsr[] = { rvc_csr_eq_0x003, rvc_end };
static const rvc_constraint rvcc_fsrm[] = { rvc_csr_eq_0x002, rvc_end };
static const rvc_constraint rvcc_fsflags[] = { rvc_csr_eq_0x001, rvc_end };
static const rvc_constraint rvcc_fsrmi[] = { rvc_csr_eq_0x002, rvc_end };
static const rvc_constraint rvcc_fsflagsi[] = { rvc_csr_eq_0x001, rvc_end };
/* pseudo-instruction metadata */
static const rv_comp_data rvcp_jal[] = {
{ rv_op_j, rvcc_jal_j },
{ rv_op_jal, rvcc_jal_jal },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_jalr[] = {
{ rv_op_ret, rvcc_jalr_ret },
{ rv_op_jr, rvcc_jalr_jr },
{ rv_op_jalr, rvcc_jalr_jalr },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_beq[] = {
{ rv_op_beqz, rvcc_rs2_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_bne[] = {
{ rv_op_bnez, rvcc_rs2_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_blt[] = {
{ rv_op_bltz, rvcc_rs2_eq_x0 },
{ rv_op_bgtz, rvcc_rs1_eq_x0 },
{ rv_op_bgt, rvcc_last },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_bge[] = {
{ rv_op_bgez, rvcc_rs2_eq_x0 },
{ rv_op_blez, rvcc_rs1_eq_x0 },
{ rv_op_ble, rvcc_last },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_bltu[] = {
{ rv_op_bgtu, rvcc_last },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_bgeu[] = {
{ rv_op_bleu, rvcc_last },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_addi[] = {
{ rv_op_nop, rvcc_addi_nop },
{ rv_op_mv, rvcc_imm_eq_zero },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_sltiu[] = {
{ rv_op_seqz, rvcc_imm_eq_p1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_xori[] = {
{ rv_op_not, rvcc_imm_eq_n1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_sub[] = {
{ rv_op_neg, rvcc_rs1_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_slt[] = {
{ rv_op_sltz, rvcc_rs2_eq_x0 },
{ rv_op_sgtz, rvcc_rs1_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_sltu[] = {
{ rv_op_snez, rvcc_rs1_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_addiw[] = {
{ rv_op_sext_w, rvcc_imm_eq_zero },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_subw[] = {
{ rv_op_negw, rvcc_rs1_eq_x0 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_csrrw[] = {
{ rv_op_fscsr, rvcc_fscsr },
{ rv_op_fsrm, rvcc_fsrm },
{ rv_op_fsflags, rvcc_fsflags },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_csrrs[] = {
{ rv_op_rdcycle, rvcc_rdcycle },
{ rv_op_rdtime, rvcc_rdtime },
{ rv_op_rdinstret, rvcc_rdinstret },
{ rv_op_rdcycleh, rvcc_rdcycleh },
{ rv_op_rdtimeh, rvcc_rdtimeh },
{ rv_op_rdinstreth, rvcc_rdinstreth },
{ rv_op_frcsr, rvcc_frcsr },
{ rv_op_frrm, rvcc_frrm },
{ rv_op_frflags, rvcc_frflags },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_csrrwi[] = {
{ rv_op_fsrmi, rvcc_fsrmi },
{ rv_op_fsflagsi, rvcc_fsflagsi },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnj_h[] = {
{ rv_op_fmv_h, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjn_h[] = {
{ rv_op_fneg_h, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjx_h[] = {
{ rv_op_fabs_h, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnj_s[] = {
{ rv_op_fmv_s, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjn_s[] = {
{ rv_op_fneg_s, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjx_s[] = {
{ rv_op_fabs_s, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnj_d[] = {
{ rv_op_fmv_d, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjn_d[] = {
{ rv_op_fneg_d, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjx_d[] = {
{ rv_op_fabs_d, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnj_q[] = {
{ rv_op_fmv_q, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjn_q[] = {
{ rv_op_fneg_q, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
static const rv_comp_data rvcp_fsgnjx_q[] = {
{ rv_op_fabs_q, rvcc_rs2_eq_rs1 },
{ rv_op_illegal, NULL }
};
/* instruction metadata */
const rv_opcode_data opcode_data[] = {
{ "illegal", rv_codec_illegal, rv_fmt_none, NULL, 0, 0, 0 },
{ "lui", rv_codec_u, rv_fmt_rd_imm, NULL, 0, 0, 0 },
{ "auipc", rv_codec_u, rv_fmt_rd_offset, NULL, 0, 0, 0 },
{ "jal", rv_codec_uj, rv_fmt_rd_offset, rvcp_jal, 0, 0, 0 },
{ "jalr", rv_codec_i, rv_fmt_rd_rs1_offset, rvcp_jalr, 0, 0, 0 },
{ "beq", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_beq, 0, 0, 0 },
{ "bne", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_bne, 0, 0, 0 },
{ "blt", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_blt, 0, 0, 0 },
{ "bge", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_bge, 0, 0, 0 },
{ "bltu", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_bltu, 0, 0, 0 },
{ "bgeu", rv_codec_sb, rv_fmt_rs1_rs2_offset, rvcp_bgeu, 0, 0, 0 },
{ "lb", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "lh", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "lw", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "lbu", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "lhu", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "sb", rv_codec_s, rv_fmt_rs2_offset_rs1, NULL, 0, 0, 0 },
{ "sh", rv_codec_s, rv_fmt_rs2_offset_rs1, NULL, 0, 0, 0 },
{ "sw", rv_codec_s, rv_fmt_rs2_offset_rs1, NULL, 0, 0, 0 },
{ "addi", rv_codec_i, rv_fmt_rd_rs1_imm, rvcp_addi, 0, 0, 0 },
{ "slti", rv_codec_i, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "sltiu", rv_codec_i, rv_fmt_rd_rs1_imm, rvcp_sltiu, 0, 0, 0 },
{ "xori", rv_codec_i, rv_fmt_rd_rs1_imm, rvcp_xori, 0, 0, 0 },
{ "ori", rv_codec_i, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "andi", rv_codec_i, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "slli", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "srli", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "srai", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sub", rv_codec_r, rv_fmt_rd_rs1_rs2, rvcp_sub, 0, 0, 0 },
{ "sll", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "slt", rv_codec_r, rv_fmt_rd_rs1_rs2, rvcp_slt, 0, 0, 0 },
{ "sltu", rv_codec_r, rv_fmt_rd_rs1_rs2, rvcp_sltu, 0, 0, 0 },
{ "xor", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "srl", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sra", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "or", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "and", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "fence", rv_codec_r_f, rv_fmt_pred_succ, NULL, 0, 0, 0 },
{ "fence.i", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "lwu", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "ld", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "sd", rv_codec_s, rv_fmt_rs2_offset_rs1, NULL, 0, 0, 0 },
{ "addiw", rv_codec_i, rv_fmt_rd_rs1_imm, rvcp_addiw, 0, 0, 0 },
{ "slliw", rv_codec_i_sh5, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "srliw", rv_codec_i_sh5, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "sraiw", rv_codec_i_sh5, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "addw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "subw", rv_codec_r, rv_fmt_rd_rs1_rs2, rvcp_subw, 0, 0, 0 },
{ "sllw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "srlw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sraw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "ldu", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "lq", rv_codec_i, rv_fmt_rd_offset_rs1, NULL, 0, 0, 0 },
{ "sq", rv_codec_s, rv_fmt_rs2_offset_rs1, NULL, 0, 0, 0 },
{ "addid", rv_codec_i, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "sllid", rv_codec_i_sh6, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "srlid", rv_codec_i_sh6, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "sraid", rv_codec_i_sh6, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "addd", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "subd", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "slld", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "srld", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "srad", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "mul", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "mulh", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "mulhsu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "mulhu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "div", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "divu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rem", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "remu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "mulw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "divw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "divuw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "remw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "remuw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "muld", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "divd", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "divud", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "remd", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "remud", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "lr.w", rv_codec_r_l, rv_fmt_aqrl_rd_rs1, NULL, 0, 0, 0 },
{ "sc.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoswap.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoadd.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoxor.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoor.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoand.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomin.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomax.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amominu.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomaxu.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "lr.d", rv_codec_r_l, rv_fmt_aqrl_rd_rs1, NULL, 0, 0, 0 },
{ "sc.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoswap.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoadd.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoxor.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoor.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoand.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomin.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomax.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amominu.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomaxu.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "lr.q", rv_codec_r_l, rv_fmt_aqrl_rd_rs1, NULL, 0, 0, 0 },
{ "sc.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoswap.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoadd.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoxor.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoor.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amoand.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomin.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomax.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amominu.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "amomaxu.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
{ "ecall", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "ebreak", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "uret", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "sret", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "hret", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "mret", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "dret", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "sfence.vm", rv_codec_r, rv_fmt_rs1, NULL, 0, 0, 0 },
{ "sfence.vma", rv_codec_r, rv_fmt_rs1_rs2, NULL, 0, 0, 0 },
{ "wfi", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
{ "csrrw", rv_codec_i_csr, rv_fmt_rd_csr_rs1, rvcp_csrrw, 0, 0, 0 },
{ "csrrs", rv_codec_i_csr, rv_fmt_rd_csr_rs1, rvcp_csrrs, 0, 0, 0 },
{ "csrrc", rv_codec_i_csr, rv_fmt_rd_csr_rs1, NULL, 0, 0, 0 },
{ "csrrwi", rv_codec_i_csr, rv_fmt_rd_csr_zimm, rvcp_csrrwi, 0, 0, 0 },
{ "csrrsi", rv_codec_i_csr, rv_fmt_rd_csr_zimm, NULL, 0, 0, 0 },
{ "csrrci", rv_codec_i_csr, rv_fmt_rd_csr_zimm, NULL, 0, 0, 0 },
{ "flh", rv_codec_i, rv_fmt_frd_offset_rs1, NULL, 0, 0, 0 },
{ "fsh", rv_codec_s, rv_fmt_frs2_offset_rs1, NULL, 0, 0, 0 },
{ "fmadd.h", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fmsub.h", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmsub.h", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmadd.h", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fadd.h", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsub.h", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmul.h", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fdiv.h", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsgnj.h", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnj_h, 0, 0, 0 },
{ "fsgnjn.h", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjn_h, 0, 0, 0 },
{ "fsgnjx.h", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjx_h, 0, 0, 0 },
{ "fmin.h", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmax.h", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsqrt.h", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fle.h", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "flt.h", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "feq.h", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.w.h", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.wu.h", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.h.w", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.h.wu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fclass.h", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.l.h", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.lu.h", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fmv.x.h", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.h.l", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.h.lu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fmv.h.x", rv_codec_r, rv_fmt_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.s.h", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.h.s", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.d.h", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.h.d", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.q.h", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.h.q", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fmv.h", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fabs.h", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fneg.h", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "flw", rv_codec_i, rv_fmt_frd_offset_rs1, NULL, 0, 0, 0 },
{ "fsw", rv_codec_s, rv_fmt_frs2_offset_rs1, NULL, 0, 0, 0 },
{ "fmadd.s", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fmsub.s", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmsub.s", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmadd.s", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fadd.s", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsub.s", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmul.s", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fdiv.s", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsgnj.s", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnj_s, 0, 0, 0 },
{ "fsgnjn.s", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjn_s, 0, 0, 0 },
{ "fsgnjx.s", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjx_s, 0, 0, 0 },
{ "fmin.s", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmax.s", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsqrt.s", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fle.s", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "flt.s", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "feq.s", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.w.s", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.wu.s", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.s.w", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.s.wu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fmv.x.s", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fclass.s", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fmv.s.x", rv_codec_r, rv_fmt_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.l.s", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.lu.s", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.s.l", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.s.lu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fld", rv_codec_i, rv_fmt_frd_offset_rs1, NULL, 0, 0, 0 },
{ "fsd", rv_codec_s, rv_fmt_frs2_offset_rs1, NULL, 0, 0, 0 },
{ "fmadd.d", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fmsub.d", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmsub.d", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmadd.d", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fadd.d", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsub.d", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmul.d", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fdiv.d", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsgnj.d", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnj_d, 0, 0, 0 },
{ "fsgnjn.d", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjn_d, 0, 0, 0 },
{ "fsgnjx.d", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjx_d, 0, 0, 0 },
{ "fmin.d", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmax.d", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.s.d", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.d.s", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fsqrt.d", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fle.d", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "flt.d", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "feq.d", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.w.d", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.wu.d", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.d.w", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.d.wu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fclass.d", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.l.d", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.lu.d", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fmv.x.d", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.d.l", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.d.lu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fmv.d.x", rv_codec_r, rv_fmt_frd_rs1, NULL, 0, 0, 0 },
{ "flq", rv_codec_i, rv_fmt_frd_offset_rs1, NULL, 0, 0, 0 },
{ "fsq", rv_codec_s, rv_fmt_frs2_offset_rs1, NULL, 0, 0, 0 },
{ "fmadd.q", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fmsub.q", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmsub.q", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fnmadd.q", rv_codec_r4_m, rv_fmt_rm_frd_frs1_frs2_frs3, NULL, 0, 0, 0 },
{ "fadd.q", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsub.q", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmul.q", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fdiv.q", rv_codec_r_m, rv_fmt_rm_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fsgnj.q", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnj_q, 0, 0, 0 },
{ "fsgnjn.q", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjn_q, 0, 0, 0 },
{ "fsgnjx.q", rv_codec_r, rv_fmt_frd_frs1_frs2, rvcp_fsgnjx_q, 0, 0, 0 },
{ "fmin.q", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fmax.q", rv_codec_r, rv_fmt_frd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.s.q", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.q.s", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.d.q", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fcvt.q.d", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fsqrt.q", rv_codec_r_m, rv_fmt_rm_frd_frs1, NULL, 0, 0, 0 },
{ "fle.q", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "flt.q", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "feq.q", rv_codec_r, rv_fmt_rd_frs1_frs2, NULL, 0, 0, 0 },
{ "fcvt.w.q", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.wu.q", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.q.w", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.q.wu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fclass.q", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.l.q", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.lu.q", rv_codec_r_m, rv_fmt_rm_rd_frs1, NULL, 0, 0, 0 },
{ "fcvt.q.l", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fcvt.q.lu", rv_codec_r_m, rv_fmt_rm_frd_rs1, NULL, 0, 0, 0 },
{ "fmv.x.q", rv_codec_r, rv_fmt_rd_frs1, NULL, 0, 0, 0 },
{ "fmv.q.x", rv_codec_r, rv_fmt_frd_rs1, NULL, 0, 0, 0 },
{ "c.addi4spn", rv_codec_ciw_4spn, rv_fmt_rd_rs1_imm, NULL, rv_op_addi, rv_op_addi, rv_op_addi, rvcd_imm_nz },
{ "c.fld", rv_codec_cl_ld, rv_fmt_frd_offset_rs1, NULL, rv_op_fld, rv_op_fld, 0 },
{ "c.lw", rv_codec_cl_lw, rv_fmt_rd_offset_rs1, NULL, rv_op_lw, rv_op_lw, rv_op_lw },
{ "c.flw", rv_codec_cl_lw, rv_fmt_frd_offset_rs1, NULL, rv_op_flw, 0, 0 },
{ "c.fsd", rv_codec_cs_sd, rv_fmt_frs2_offset_rs1, NULL, rv_op_fsd, rv_op_fsd, 0 },
{ "c.sw", rv_codec_cs_sw, rv_fmt_rs2_offset_rs1, NULL, rv_op_sw, rv_op_sw, rv_op_sw },
{ "c.fsw", rv_codec_cs_sw, rv_fmt_frs2_offset_rs1, NULL, rv_op_fsw, 0, 0 },
{ "c.nop", rv_codec_ci_none, rv_fmt_none, NULL, rv_op_addi, rv_op_addi, rv_op_addi },
{ "c.addi", rv_codec_ci, rv_fmt_rd_rs1_imm, NULL, rv_op_addi, rv_op_addi, rv_op_addi, rvcd_imm_nz_hint },
{ "c.jal", rv_codec_cj_jal, rv_fmt_rd_offset, NULL, rv_op_jal, 0, 0 },
{ "c.li", rv_codec_ci_li, rv_fmt_rd_rs1_imm, NULL, rv_op_addi, rv_op_addi, rv_op_addi },
{ "c.addi16sp", rv_codec_ci_16sp, rv_fmt_rd_rs1_imm, NULL, rv_op_addi, rv_op_addi, rv_op_addi, rvcd_imm_nz },
{ "c.lui", rv_codec_ci_lui, rv_fmt_rd_imm, NULL, rv_op_lui, rv_op_lui, rv_op_lui, rvcd_imm_nz },
{ "c.srli", rv_codec_cb_sh6, rv_fmt_rd_rs1_imm, NULL, rv_op_srli, rv_op_srli, rv_op_srli, rvcd_imm_nz },
{ "c.srai", rv_codec_cb_sh6, rv_fmt_rd_rs1_imm, NULL, rv_op_srai, rv_op_srai, rv_op_srai, rvcd_imm_nz },
{ "c.andi", rv_codec_cb_imm, rv_fmt_rd_rs1_imm, NULL, rv_op_andi, rv_op_andi, rv_op_andi, rvcd_imm_nz },
{ "c.sub", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_sub, rv_op_sub, rv_op_sub },
{ "c.xor", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_xor, rv_op_xor, rv_op_xor },
{ "c.or", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_or, rv_op_or, rv_op_or },
{ "c.and", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_and, rv_op_and, rv_op_and },
{ "c.subw", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_subw, rv_op_subw, rv_op_subw },
{ "c.addw", rv_codec_cs, rv_fmt_rd_rs1_rs2, NULL, rv_op_addw, rv_op_addw, rv_op_addw },
{ "c.j", rv_codec_cj, rv_fmt_rd_offset, NULL, rv_op_jal, rv_op_jal, rv_op_jal },
{ "c.beqz", rv_codec_cb, rv_fmt_rs1_rs2_offset, NULL, rv_op_beq, rv_op_beq, rv_op_beq },
{ "c.bnez", rv_codec_cb, rv_fmt_rs1_rs2_offset, NULL, rv_op_bne, rv_op_bne, rv_op_bne },
{ "c.slli", rv_codec_ci_sh6, rv_fmt_rd_rs1_imm, NULL, rv_op_slli, rv_op_slli, rv_op_slli, rvcd_imm_nz },
{ "c.fldsp", rv_codec_ci_ldsp, rv_fmt_frd_offset_rs1, NULL, rv_op_fld, rv_op_fld, rv_op_fld },
{ "c.lwsp", rv_codec_ci_lwsp, rv_fmt_rd_offset_rs1, NULL, rv_op_lw, rv_op_lw, rv_op_lw },
{ "c.flwsp", rv_codec_ci_lwsp, rv_fmt_frd_offset_rs1, NULL, rv_op_flw, 0, 0 },
{ "c.jr", rv_codec_cr_jr, rv_fmt_rd_rs1_offset, NULL, rv_op_jalr, rv_op_jalr, rv_op_jalr },
{ "c.mv", rv_codec_cr_mv, rv_fmt_rd_rs1_rs2, NULL, rv_op_addi, rv_op_addi, rv_op_addi },
{ "c.ebreak", rv_codec_ci_none, rv_fmt_none, NULL, rv_op_ebreak, rv_op_ebreak, rv_op_ebreak },
{ "c.jalr", rv_codec_cr_jalr, rv_fmt_rd_rs1_offset, NULL, rv_op_jalr, rv_op_jalr, rv_op_jalr },
{ "c.add", rv_codec_cr, rv_fmt_rd_rs1_rs2, NULL, rv_op_add, rv_op_add, rv_op_add },
{ "c.fsdsp", rv_codec_css_sdsp, rv_fmt_frs2_offset_rs1, NULL, rv_op_fsd, rv_op_fsd, rv_op_fsd },
{ "c.swsp", rv_codec_css_swsp, rv_fmt_rs2_offset_rs1, NULL, rv_op_sw, rv_op_sw, rv_op_sw },
{ "c.fswsp", rv_codec_css_swsp, rv_fmt_frs2_offset_rs1, NULL, rv_op_fsw, 0, 0 },
{ "c.ld", rv_codec_cl_ld, rv_fmt_rd_offset_rs1, NULL, 0, rv_op_ld, rv_op_ld },
{ "c.sd", rv_codec_cs_sd, rv_fmt_rs2_offset_rs1, NULL, 0, rv_op_sd, rv_op_sd },
{ "c.addiw", rv_codec_ci, rv_fmt_rd_rs1_imm, NULL, 0, rv_op_addiw, rv_op_addiw },
{ "c.ldsp", rv_codec_ci_ldsp, rv_fmt_rd_offset_rs1, NULL, 0, rv_op_ld, rv_op_ld },
{ "c.sdsp", rv_codec_css_sdsp, rv_fmt_rs2_offset_rs1, NULL, 0, rv_op_sd, rv_op_sd },
{ "c.lq", rv_codec_cl_lq, rv_fmt_rd_offset_rs1, NULL, 0, 0, rv_op_lq },
{ "c.sq", rv_codec_cs_sq, rv_fmt_rs2_offset_rs1, NULL, 0, 0, rv_op_sq },
{ "c.lqsp", rv_codec_ci_lqsp, rv_fmt_rd_offset_rs1, NULL, 0, 0, rv_op_lq },
{ "c.sqsp", rv_codec_css_sqsp, rv_fmt_rs2_offset_rs1, NULL, 0, 0, rv_op_sq },
{ "nop", rv_codec_i, rv_fmt_none, NULL, 0, 0, 0 },
{ "mv", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "not", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "neg", rv_codec_r, rv_fmt_rd_rs2, NULL, 0, 0, 0 },
{ "negw", rv_codec_r, rv_fmt_rd_rs2, NULL, 0, 0, 0 },
{ "sext.w", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "seqz", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "snez", rv_codec_r, rv_fmt_rd_rs2, NULL, 0, 0, 0 },
{ "sltz", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "sgtz", rv_codec_r, rv_fmt_rd_rs2, NULL, 0, 0, 0 },
{ "fmv.s", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fabs.s", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fneg.s", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fmv.d", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fabs.d", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fneg.d", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fmv.q", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fabs.q", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "fneg.q", rv_codec_r, rv_fmt_frd_frs1, NULL, 0, 0, 0 },
{ "beqz", rv_codec_sb, rv_fmt_rs1_offset, NULL, 0, 0, 0 },
{ "bnez", rv_codec_sb, rv_fmt_rs1_offset, NULL, 0, 0, 0 },
{ "blez", rv_codec_sb, rv_fmt_rs2_offset, NULL, 0, 0, 0 },
{ "bgez", rv_codec_sb, rv_fmt_rs1_offset, NULL, 0, 0, 0 },
{ "bltz", rv_codec_sb, rv_fmt_rs1_offset, NULL, 0, 0, 0 },
{ "bgtz", rv_codec_sb, rv_fmt_rs2_offset, NULL, 0, 0, 0 },
{ "ble", rv_codec_sb, rv_fmt_rs2_rs1_offset, NULL, 0, 0, 0 },
{ "bleu", rv_codec_sb, rv_fmt_rs2_rs1_offset, NULL, 0, 0, 0 },
{ "bgt", rv_codec_sb, rv_fmt_rs2_rs1_offset, NULL, 0, 0, 0 },
{ "bgtu", rv_codec_sb, rv_fmt_rs2_rs1_offset, NULL, 0, 0, 0 },
{ "j", rv_codec_uj, rv_fmt_offset, NULL, 0, 0, 0 },
{ "ret", rv_codec_i, rv_fmt_none, NULL, 0, 0, 0 },
{ "jr", rv_codec_i, rv_fmt_rs1, NULL, 0, 0, 0 },
{ "rdcycle", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "rdtime", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "rdinstret", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "rdcycleh", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "rdtimeh", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "rdinstreth", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "frcsr", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "frrm", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "frflags", rv_codec_i_csr, rv_fmt_rd, NULL, 0, 0, 0 },
{ "fscsr", rv_codec_i_csr, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "fsrm", rv_codec_i_csr, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "fsflags", rv_codec_i_csr, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "fsrmi", rv_codec_i_csr, rv_fmt_rd_zimm, NULL, 0, 0, 0 },
{ "fsflagsi", rv_codec_i_csr, rv_fmt_rd_zimm, NULL, 0, 0, 0 },
{ "add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "andn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "bclr", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "bclri", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "bext", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "bexti", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "binv", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "binvi", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "bset", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "bseti", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "clmul", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "clmulh", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "clmulr", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "clz", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "clzw", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "cpop", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "cpopw", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "ctz", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "ctzw", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "max", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "maxu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "min", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "minu", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "orc.b", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "orn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rev8", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "rol", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rolw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "ror", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "rori", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "roriw", rv_codec_i_sh7, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "rorw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sext.b", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "sext.h", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
{ "sh1add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh1add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh2add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh2add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh3add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "sh3add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "slli.uw", rv_codec_i_sh6, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
{ "xnor", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
{ "zext.h", rv_codec_i, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
};
/* CSR names */
static const char *csr_name(int csrno)
{
switch (csrno) {
case 0x0000: return "ustatus";
case 0x0001: return "fflags";
case 0x0002: return "frm";
case 0x0003: return "fcsr";
case 0x0004: return "uie";
case 0x0005: return "utvec";
case 0x0007: return "utvt";
case 0x0008: return "vstart";
case 0x0009: return "vxsat";
case 0x000a: return "vxrm";
case 0x000f: return "vcsr";
case 0x0040: return "uscratch";
case 0x0041: return "uepc";
case 0x0042: return "ucause";
case 0x0043: return "utval";
case 0x0044: return "uip";
case 0x0045: return "unxti";
case 0x0046: return "uintstatus";
case 0x0048: return "uscratchcsw";
case 0x0049: return "uscratchcswl";
case 0x0100: return "sstatus";
case 0x0102: return "sedeleg";
case 0x0103: return "sideleg";
case 0x0104: return "sie";
case 0x0105: return "stvec";
case 0x0106: return "scounteren";
case 0x0107: return "stvt";
case 0x0140: return "sscratch";
case 0x0141: return "sepc";
case 0x0142: return "scause";
case 0x0143: return "stval";
case 0x0144: return "sip";
case 0x0145: return "snxti";
case 0x0146: return "sintstatus";
case 0x0148: return "sscratchcsw";
case 0x0149: return "sscratchcswl";
case 0x0180: return "satp";
case 0x0200: return "vsstatus";
case 0x0204: return "vsie";
case 0x0205: return "vstvec";
case 0x0240: return "vsscratch";
case 0x0241: return "vsepc";
case 0x0242: return "vscause";
case 0x0243: return "vstval";
case 0x0244: return "vsip";
case 0x0280: return "vsatp";
case 0x0300: return "mstatus";
case 0x0301: return "misa";
case 0x0302: return "medeleg";
case 0x0303: return "mideleg";
case 0x0304: return "mie";
case 0x0305: return "mtvec";
case 0x0306: return "mcounteren";
case 0x0307: return "mtvt";
case 0x0310: return "mstatush";
case 0x0320: return "mcountinhibit";
case 0x0323: return "mhpmevent3";
case 0x0324: return "mhpmevent4";
case 0x0325: return "mhpmevent5";
case 0x0326: return "mhpmevent6";
case 0x0327: return "mhpmevent7";
case 0x0328: return "mhpmevent8";
case 0x0329: return "mhpmevent9";
case 0x032a: return "mhpmevent10";
case 0x032b: return "mhpmevent11";
case 0x032c: return "mhpmevent12";
case 0x032d: return "mhpmevent13";
case 0x032e: return "mhpmevent14";
case 0x032f: return "mhpmevent15";
case 0x0330: return "mhpmevent16";
case 0x0331: return "mhpmevent17";
case 0x0332: return "mhpmevent18";
case 0x0333: return "mhpmevent19";
case 0x0334: return "mhpmevent20";
case 0x0335: return "mhpmevent21";
case 0x0336: return "mhpmevent22";
case 0x0337: return "mhpmevent23";
case 0x0338: return "mhpmevent24";
case 0x0339: return "mhpmevent25";
case 0x033a: return "mhpmevent26";
case 0x033b: return "mhpmevent27";
case 0x033c: return "mhpmevent28";
case 0x033d: return "mhpmevent29";
case 0x033e: return "mhpmevent30";
case 0x033f: return "mhpmevent31";
case 0x0340: return "mscratch";
case 0x0341: return "mepc";
case 0x0342: return "mcause";
case 0x0343: return "mtval";
case 0x0344: return "mip";
case 0x0345: return "mnxti";
case 0x0346: return "mintstatus";
case 0x0348: return "mscratchcsw";
case 0x0349: return "mscratchcswl";
case 0x034a: return "mtinst";
case 0x034b: return "mtval2";
case 0x03a0: return "pmpcfg0";
case 0x03a1: return "pmpcfg1";
case 0x03a2: return "pmpcfg2";
case 0x03a3: return "pmpcfg3";
case 0x03b0: return "pmpaddr0";
case 0x03b1: return "pmpaddr1";
case 0x03b2: return "pmpaddr2";
case 0x03b3: return "pmpaddr3";
case 0x03b4: return "pmpaddr4";
case 0x03b5: return "pmpaddr5";
case 0x03b6: return "pmpaddr6";
case 0x03b7: return "pmpaddr7";
case 0x03b8: return "pmpaddr8";
case 0x03b9: return "pmpaddr9";
case 0x03ba: return "pmpaddr10";
case 0x03bb: return "pmpaddr11";
case 0x03bc: return "pmpaddr12";
case 0x03bd: return "pmpaddr13";
case 0x03be: return "pmpaddr14";
case 0x03bf: return "pmpaddr15";
case 0x0600: return "hstatus";
case 0x0602: return "hedeleg";
case 0x0603: return "hideleg";
case 0x0604: return "hie";
case 0x0605: return "htimedelta";
case 0x0606: return "hcounteren";
case 0x0607: return "hgeie";
case 0x0615: return "htimedeltah";
case 0x0643: return "htval";
case 0x0644: return "hip";
case 0x0645: return "hvip";
case 0x064a: return "htinst";
case 0x0680: return "hgatp";
case 0x07a0: return "tselect";
case 0x07a1: return "tdata1";
case 0x07a2: return "tdata2";
case 0x07a3: return "tdata3";
case 0x07a4: return "tinfo";
case 0x07a5: return "tcontrol";
case 0x07a8: return "mcontext";
case 0x07a9: return "mnoise";
case 0x07aa: return "scontext";
case 0x07b0: return "dcsr";
case 0x07b1: return "dpc";
case 0x07b2: return "dscratch0";
case 0x07b3: return "dscratch1";
case 0x0b00: return "mcycle";
case 0x0b02: return "minstret";
case 0x0b03: return "mhpmcounter3";
case 0x0b04: return "mhpmcounter4";
case 0x0b05: return "mhpmcounter5";
case 0x0b06: return "mhpmcounter6";
case 0x0b07: return "mhpmcounter7";
case 0x0b08: return "mhpmcounter8";
case 0x0b09: return "mhpmcounter9";
case 0x0b0a: return "mhpmcounter10";
case 0x0b0b: return "mhpmcounter11";
case 0x0b0c: return "mhpmcounter12";
case 0x0b0d: return "mhpmcounter13";
case 0x0b0e: return "mhpmcounter14";
case 0x0b0f: return "mhpmcounter15";
case 0x0b10: return "mhpmcounter16";
case 0x0b11: return "mhpmcounter17";
case 0x0b12: return "mhpmcounter18";
case 0x0b13: return "mhpmcounter19";
case 0x0b14: return "mhpmcounter20";
case 0x0b15: return "mhpmcounter21";
case 0x0b16: return "mhpmcounter22";
case 0x0b17: return "mhpmcounter23";
case 0x0b18: return "mhpmcounter24";
case 0x0b19: return "mhpmcounter25";
case 0x0b1a: return "mhpmcounter26";
case 0x0b1b: return "mhpmcounter27";
case 0x0b1c: return "mhpmcounter28";
case 0x0b1d: return "mhpmcounter29";
case 0x0b1e: return "mhpmcounter30";
case 0x0b1f: return "mhpmcounter31";
case 0x0b80: return "mcycleh";
case 0x0b82: return "minstreth";
case 0x0b83: return "mhpmcounter3h";
case 0x0b84: return "mhpmcounter4h";
case 0x0b85: return "mhpmcounter5h";
case 0x0b86: return "mhpmcounter6h";
case 0x0b87: return "mhpmcounter7h";
case 0x0b88: return "mhpmcounter8h";
case 0x0b89: return "mhpmcounter9h";
case 0x0b8a: return "mhpmcounter10h";
case 0x0b8b: return "mhpmcounter11h";
case 0x0b8c: return "mhpmcounter12h";
case 0x0b8d: return "mhpmcounter13h";
case 0x0b8e: return "mhpmcounter14h";
case 0x0b8f: return "mhpmcounter15h";
case 0x0b90: return "mhpmcounter16h";
case 0x0b91: return "mhpmcounter17h";
case 0x0b92: return "mhpmcounter18h";
case 0x0b93: return "mhpmcounter19h";
case 0x0b94: return "mhpmcounter20h";
case 0x0b95: return "mhpmcounter21h";
case 0x0b96: return "mhpmcounter22h";
case 0x0b97: return "mhpmcounter23h";
case 0x0b98: return "mhpmcounter24h";
case 0x0b99: return "mhpmcounter25h";
case 0x0b9a: return "mhpmcounter26h";
case 0x0b9b: return "mhpmcounter27h";
case 0x0b9c: return "mhpmcounter28h";
case 0x0b9d: return "mhpmcounter29h";
case 0x0b9e: return "mhpmcounter30h";
case 0x0b9f: return "mhpmcounter31h";
case 0x0c00: return "cycle";
case 0x0c01: return "time";
case 0x0c02: return "instret";
case 0x0c03: return "hpmcounter3";
case 0x0c04: return "hpmcounter4";
case 0x0c05: return "hpmcounter5";
case 0x0c06: return "hpmcounter6";
case 0x0c07: return "hpmcounter7";
case 0x0c08: return "hpmcounter8";
case 0x0c09: return "hpmcounter9";
case 0x0c0a: return "hpmcounter10";
case 0x0c0b: return "hpmcounter11";
case 0x0c0c: return "hpmcounter12";
case 0x0c0d: return "hpmcounter13";
case 0x0c0e: return "hpmcounter14";
case 0x0c0f: return "hpmcounter15";
case 0x0c10: return "hpmcounter16";
case 0x0c11: return "hpmcounter17";
case 0x0c12: return "hpmcounter18";
case 0x0c13: return "hpmcounter19";
case 0x0c14: return "hpmcounter20";
case 0x0c15: return "hpmcounter21";
case 0x0c16: return "hpmcounter22";
case 0x0c17: return "hpmcounter23";
case 0x0c18: return "hpmcounter24";
case 0x0c19: return "hpmcounter25";
case 0x0c1a: return "hpmcounter26";
case 0x0c1b: return "hpmcounter27";
case 0x0c1c: return "hpmcounter28";
case 0x0c1d: return "hpmcounter29";
case 0x0c1e: return "hpmcounter30";
case 0x0c1f: return "hpmcounter31";
case 0x0c20: return "vl";
case 0x0c21: return "vtype";
case 0x0c22: return "vlenb";
case 0x0c80: return "cycleh";
case 0x0c81: return "timeh";
case 0x0c82: return "instreth";
case 0x0c83: return "hpmcounter3h";
case 0x0c84: return "hpmcounter4h";
case 0x0c85: return "hpmcounter5h";
case 0x0c86: return "hpmcounter6h";
case 0x0c87: return "hpmcounter7h";
case 0x0c88: return "hpmcounter8h";
case 0x0c89: return "hpmcounter9h";
case 0x0c8a: return "hpmcounter10h";
case 0x0c8b: return "hpmcounter11h";
case 0x0c8c: return "hpmcounter12h";
case 0x0c8d: return "hpmcounter13h";
case 0x0c8e: return "hpmcounter14h";
case 0x0c8f: return "hpmcounter15h";
case 0x0c90: return "hpmcounter16h";
case 0x0c91: return "hpmcounter17h";
case 0x0c92: return "hpmcounter18h";
case 0x0c93: return "hpmcounter19h";
case 0x0c94: return "hpmcounter20h";
case 0x0c95: return "hpmcounter21h";
case 0x0c96: return "hpmcounter22h";
case 0x0c97: return "hpmcounter23h";
case 0x0c98: return "hpmcounter24h";
case 0x0c99: return "hpmcounter25h";
case 0x0c9a: return "hpmcounter26h";
case 0x0c9b: return "hpmcounter27h";
case 0x0c9c: return "hpmcounter28h";
case 0x0c9d: return "hpmcounter29h";
case 0x0c9e: return "hpmcounter30h";
case 0x0c9f: return "hpmcounter31h";
case 0x0e12: return "hgeip";
case 0x0f11: return "mvendorid";
case 0x0f12: return "marchid";
case 0x0f13: return "mimpid";
case 0x0f14: return "mhartid";
case 0x0f15: return "mentropy";
default: return NULL;
}
}
/* decode opcode */
static void decode_inst_opcode(rv_decode *dec, rv_isa isa)
{
rv_inst inst = dec->inst;
rv_opcode op = rv_op_illegal;
switch (((inst >> 0) & 0b11)) {
case 0:
switch (((inst >> 13) & 0b111)) {
case 0: op = rv_op_c_addi4spn; break;
case 1: op = (isa == rv128) ? rv_op_c_lq : rv_op_c_fld; break;
case 2: op = rv_op_c_lw; break;
case 3: op = (isa == rv32) ? rv_op_c_flw : rv_op_c_ld; break;
case 5: op = (isa == rv128) ? rv_op_c_sq : rv_op_c_fsd; break;
case 6: op = rv_op_c_sw; break;
case 7: op = (isa == rv32) ? rv_op_c_fsw : rv_op_c_sd; break;
}
break;
case 1:
switch (((inst >> 13) & 0b111)) {
case 0:
switch (((inst >> 2) & 0b11111111111)) {
case 0: op = rv_op_c_nop; break;
default: op = rv_op_c_addi; break;
}
break;
case 1: op = (isa == rv32) ? rv_op_c_jal : rv_op_c_addiw; break;
case 2: op = rv_op_c_li; break;
case 3:
switch (((inst >> 7) & 0b11111)) {
case 2: op = rv_op_c_addi16sp; break;
default: op = rv_op_c_lui; break;
}
break;
case 4:
switch (((inst >> 10) & 0b11)) {
case 0:
op = rv_op_c_srli;
break;
case 1:
op = rv_op_c_srai;
break;
case 2: op = rv_op_c_andi; break;
case 3:
switch (((inst >> 10) & 0b100) | ((inst >> 5) & 0b011)) {
case 0: op = rv_op_c_sub; break;
case 1: op = rv_op_c_xor; break;
case 2: op = rv_op_c_or; break;
case 3: op = rv_op_c_and; break;
case 4: op = rv_op_c_subw; break;
case 5: op = rv_op_c_addw; break;
}
break;
}
break;
case 5: op = rv_op_c_j; break;
case 6: op = rv_op_c_beqz; break;
case 7: op = rv_op_c_bnez; break;
}
break;
case 2:
switch (((inst >> 13) & 0b111)) {
case 0:
op = rv_op_c_slli;
break;
case 1: op = (isa == rv128) ? rv_op_c_lqsp : rv_op_c_fldsp; break;
case 2: op = rv_op_c_lwsp; break;
case 3: op = (isa == rv32) ? rv_op_c_flwsp : rv_op_c_ldsp; break;
case 4:
switch (((inst >> 12) & 0b1)) {
case 0:
switch (((inst >> 2) & 0b11111)) {
case 0: op = rv_op_c_jr; break;
default: op = rv_op_c_mv; break;
}
break;
case 1:
switch (((inst >> 2) & 0b11111)) {
case 0:
switch (((inst >> 7) & 0b11111)) {
case 0: op = rv_op_c_ebreak; break;
default: op = rv_op_c_jalr; break;
}
break;
default: op = rv_op_c_add; break;
}
break;
}
break;
case 5: op = (isa == rv128) ? rv_op_c_sqsp : rv_op_c_fsdsp; break;
case 6: op = rv_op_c_swsp; break;
case 7: op = (isa == rv32) ? rv_op_c_fswsp : rv_op_c_sdsp; break;
}
break;
case 3:
switch (((inst >> 2) & 0b11111)) {
case 0:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_lb; break;
case 1: op = rv_op_lh; break;
case 2: op = rv_op_lw; break;
case 3: op = rv_op_ld; break;
case 4: op = rv_op_lbu; break;
case 5: op = rv_op_lhu; break;
case 6: op = rv_op_lwu; break;
case 7: op = rv_op_ldu; break;
}
break;
case 1:
switch (((inst >> 12) & 0b111)) {
case 1: op = rv_op_flh; break;
case 2: op = rv_op_flw; break;
case 3: op = rv_op_fld; break;
case 4: op = rv_op_flq; break;
}
break;
case 3:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fence; break;
case 1: op = rv_op_fence_i; break;
case 2: op = rv_op_lq; break;
}
break;
case 4:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_addi; break;
case 1:
switch (((inst >> 27) & 0b11111)) {
case 0: op = rv_op_slli; break;
case 5: op = rv_op_bseti; break;
case 9: op = rv_op_bclri; break;
case 12:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_clz; break;
case 1: op = rv_op_ctz; break;
case 2: op = rv_op_cpop; break;
case 4: op = rv_op_sext_b; break;
case 5: op = rv_op_sext_h; break;
}
break;
case 13: op = rv_op_binvi; break;
}
break;
case 2: op = rv_op_slti; break;
case 3: op = rv_op_sltiu; break;
case 4: op = rv_op_xori; break;
case 5:
switch (((inst >> 27) & 0b11111)) {
case 0: op = rv_op_srli; break;
case 5:
switch (((inst >> 20) & 0b1111111)) {
case 7: op = rv_op_orc_b; break;
}
break;
case 8: op = rv_op_srai; break;
case 9: op = rv_op_bexti; break;
case 12: op = rv_op_rori; break;
case 13:
switch (((inst >> 20) & 0b1111111)) {
case 24: if (isa == rv32) op = rv_op_rev8; break;
case 56: if (isa == rv64) op = rv_op_rev8; break;
}
break;
}
break;
case 6: op = rv_op_ori; break;
case 7: op = rv_op_andi; break;
}
break;
case 5: op = rv_op_auipc; break;
case 6:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_addiw; break;
case 1:
switch (((inst >> 25) & 0b1111111)) {
case 0: op = rv_op_slliw; break;
case 4: op = rv_op_slli_uw; break;
case 5: op = rv_op_slli_uw; break;
case 48:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_clzw; break;
case 1: op = rv_op_ctzw; break;
case 2: op = rv_op_cpopw; break;
}
break;
}
break;
case 5:
switch (((inst >> 25) & 0b1111111)) {
case 0: op = rv_op_srliw; break;
case 32: op = rv_op_sraiw; break;
case 48: op = rv_op_roriw; break;
}
break;
}
break;
case 8:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_sb; break;
case 1: op = rv_op_sh; break;
case 2: op = rv_op_sw; break;
case 3: op = rv_op_sd; break;
case 4: op = rv_op_sq; break;
}
break;
case 9:
switch (((inst >> 12) & 0b111)) {
case 1: op = rv_op_fsh; break;
case 2: op = rv_op_fsw; break;
case 3: op = rv_op_fsd; break;
case 4: op = rv_op_fsq; break;
}
break;
case 11:
switch (((inst >> 24) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 2: op = rv_op_amoadd_w; break;
case 3: op = rv_op_amoadd_d; break;
case 4: op = rv_op_amoadd_q; break;
case 10: op = rv_op_amoswap_w; break;
case 11: op = rv_op_amoswap_d; break;
case 12: op = rv_op_amoswap_q; break;
case 18:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_lr_w; break;
}
break;
case 19:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_lr_d; break;
}
break;
case 20:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_lr_q; break;
}
break;
case 26: op = rv_op_sc_w; break;
case 27: op = rv_op_sc_d; break;
case 28: op = rv_op_sc_q; break;
case 34: op = rv_op_amoxor_w; break;
case 35: op = rv_op_amoxor_d; break;
case 36: op = rv_op_amoxor_q; break;
case 66: op = rv_op_amoor_w; break;
case 67: op = rv_op_amoor_d; break;
case 68: op = rv_op_amoor_q; break;
case 98: op = rv_op_amoand_w; break;
case 99: op = rv_op_amoand_d; break;
case 100: op = rv_op_amoand_q; break;
case 130: op = rv_op_amomin_w; break;
case 131: op = rv_op_amomin_d; break;
case 132: op = rv_op_amomin_q; break;
case 162: op = rv_op_amomax_w; break;
case 163: op = rv_op_amomax_d; break;
case 164: op = rv_op_amomax_q; break;
case 194: op = rv_op_amominu_w; break;
case 195: op = rv_op_amominu_d; break;
case 196: op = rv_op_amominu_q; break;
case 226: op = rv_op_amomaxu_w; break;
case 227: op = rv_op_amomaxu_d; break;
case 228: op = rv_op_amomaxu_q; break;
}
break;
case 12:
switch (((inst >> 22) & 0b1111111000) | ((inst >> 12) & 0b0000000111)) {
case 0: op = rv_op_add; break;
case 1: op = rv_op_sll; break;
case 2: op = rv_op_slt; break;
case 3: op = rv_op_sltu; break;
case 4: op = rv_op_xor; break;
case 5: op = rv_op_srl; break;
case 6: op = rv_op_or; break;
case 7: op = rv_op_and; break;
case 8: op = rv_op_mul; break;
case 9: op = rv_op_mulh; break;
case 10: op = rv_op_mulhsu; break;
case 11: op = rv_op_mulhu; break;
case 12: op = rv_op_div; break;
case 13: op = rv_op_divu; break;
case 14: op = rv_op_rem; break;
case 15: op = rv_op_remu; break;
case 36:
switch (((inst >> 20) & 0b11111)) {
case 0: if (isa == rv32) op = rv_op_zext_h; break;
}
break;
case 41: op = rv_op_clmul; break;
case 42: op = rv_op_clmulr; break;
case 43: op = rv_op_clmulh; break;
case 44: op = rv_op_min; break;
case 45: op = rv_op_minu; break;
case 46: op = rv_op_max; break;
case 47: op = rv_op_maxu; break;
case 130: op = rv_op_sh1add; break;
case 132: op = rv_op_sh2add; break;
case 134: op = rv_op_sh3add; break;
case 161: op = rv_op_bset; break;
case 256: op = rv_op_sub; break;
case 260: op = rv_op_xnor; break;
case 261: op = rv_op_sra; break;
case 262: op = rv_op_orn; break;
case 263: op = rv_op_andn; break;
case 289: op = rv_op_bclr; break;
case 293: op = rv_op_bext; break;
case 385: op = rv_op_rol; break;
case 389: op = rv_op_ror; break;
case 417: op = rv_op_binv; break;
}
break;
case 13: op = rv_op_lui; break;
case 14:
switch (((inst >> 22) & 0b1111111000) | ((inst >> 12) & 0b0000000111)) {
case 0: op = rv_op_addw; break;
case 1: op = rv_op_sllw; break;
case 5: op = rv_op_srlw; break;
case 8: op = rv_op_mulw; break;
case 12: op = rv_op_divw; break;
case 13: op = rv_op_divuw; break;
case 14: op = rv_op_remw; break;
case 15: op = rv_op_remuw; break;
case 32: op = rv_op_add_uw; break;
case 36:
switch (((inst >> 20) & 0b11111)) {
case 0: if (isa == rv64) op = rv_op_zext_h; break;
}
break;
case 130: op = rv_op_sh1add_uw; break;
case 132: op = rv_op_sh2add_uw; break;
case 134: op = rv_op_sh3add_uw; break;
case 256: op = rv_op_subw; break;
case 261: op = rv_op_sraw; break;
case 385: op = rv_op_rolw; break;
case 389: op = rv_op_rorw; break;
}
break;
case 16:
switch (((inst >> 25) & 0b11)) {
case 0: op = rv_op_fmadd_s; break;
case 1: op = rv_op_fmadd_d; break;
case 2: op = rv_op_fmadd_h; break;
case 3: op = rv_op_fmadd_q; break;
}
break;
case 17:
switch (((inst >> 25) & 0b11)) {
case 0: op = rv_op_fmsub_s; break;
case 1: op = rv_op_fmsub_d; break;
case 2: op = rv_op_fmsub_h; break;
case 3: op = rv_op_fmsub_q; break;
}
break;
case 18:
switch (((inst >> 25) & 0b11)) {
case 0: op = rv_op_fnmsub_s; break;
case 1: op = rv_op_fnmsub_d; break;
case 2: op = rv_op_fnmsub_h; break;
case 3: op = rv_op_fnmsub_q; break;
}
break;
case 19:
switch (((inst >> 25) & 0b11)) {
case 0: op = rv_op_fnmadd_s; break;
case 1: op = rv_op_fnmadd_d; break;
case 2: op = rv_op_fnmadd_h; break;
case 3: op = rv_op_fnmadd_q; break;
}
break;
case 20:
switch (((inst >> 25) & 0b1111111)) {
case 0: op = rv_op_fadd_s; break;
case 1: op = rv_op_fadd_d; break;
case 2: op = rv_op_fadd_h; break;
case 3: op = rv_op_fadd_q; break;
case 4: op = rv_op_fsub_s; break;
case 5: op = rv_op_fsub_d; break;
case 6: op = rv_op_fsub_h; break;
case 7: op = rv_op_fsub_q; break;
case 8: op = rv_op_fmul_s; break;
case 9: op = rv_op_fmul_d; break;
case 10: op = rv_op_fmul_h; break;
case 11: op = rv_op_fmul_q; break;
case 12: op = rv_op_fdiv_s; break;
case 13: op = rv_op_fdiv_d; break;
case 14: op = rv_op_fdiv_h; break;
case 15: op = rv_op_fdiv_q; break;
case 16:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fsgnj_s; break;
case 1: op = rv_op_fsgnjn_s; break;
case 2: op = rv_op_fsgnjx_s; break;
}
break;
case 17:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fsgnj_d; break;
case 1: op = rv_op_fsgnjn_d; break;
case 2: op = rv_op_fsgnjx_d; break;
}
break;
case 18:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fsgnj_h; break;
case 1: op = rv_op_fsgnjn_h; break;
case 2: op = rv_op_fsgnjx_h; break;
}
break;
case 19:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fsgnj_q; break;
case 1: op = rv_op_fsgnjn_q; break;
case 2: op = rv_op_fsgnjx_q; break;
}
break;
case 20:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fmin_s; break;
case 1: op = rv_op_fmax_s; break;
}
break;
case 21:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fmin_d; break;
case 1: op = rv_op_fmax_d; break;
}
break;
case 22:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fmin_h; break;
case 1: op = rv_op_fmax_h; break;
}
break;
case 23:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fmin_q; break;
case 1: op = rv_op_fmax_q; break;
}
break;
case 32:
switch (((inst >> 20) & 0b11111)) {
case 1: op = rv_op_fcvt_s_d; break;
case 2: op = rv_op_fcvt_s_h; break;
case 3: op = rv_op_fcvt_s_q; break;
}
break;
case 33:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_d_s; break;
case 2: op = rv_op_fcvt_d_h; break;
case 3: op = rv_op_fcvt_d_q; break;
}
break;
case 34:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_h_s; break;
case 1: op = rv_op_fcvt_h_d; break;
case 3: op = rv_op_fcvt_h_q; break;
}
break;
case 35:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_q_s; break;
case 1: op = rv_op_fcvt_q_d; break;
case 2: op = rv_op_fcvt_q_h; break;
}
break;
case 44:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fsqrt_s; break;
}
break;
case 45:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fsqrt_d; break;
}
break;
case 46:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fsqrt_h; break;
}
break;
case 47:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fsqrt_q; break;
}
break;
case 80:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fle_s; break;
case 1: op = rv_op_flt_s; break;
case 2: op = rv_op_feq_s; break;
}
break;
case 81:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fle_d; break;
case 1: op = rv_op_flt_d; break;
case 2: op = rv_op_feq_d; break;
}
break;
case 82:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fle_h; break;
case 1: op = rv_op_flt_h; break;
case 2: op = rv_op_feq_h; break;
}
break;
case 83:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_fle_q; break;
case 1: op = rv_op_flt_q; break;
case 2: op = rv_op_feq_q; break;
}
break;
case 96:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_w_s; break;
case 1: op = rv_op_fcvt_wu_s; break;
case 2: op = rv_op_fcvt_l_s; break;
case 3: op = rv_op_fcvt_lu_s; break;
}
break;
case 97:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_w_d; break;
case 1: op = rv_op_fcvt_wu_d; break;
case 2: op = rv_op_fcvt_l_d; break;
case 3: op = rv_op_fcvt_lu_d; break;
}
break;
case 98:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_w_h; break;
case 1: op = rv_op_fcvt_wu_h; break;
case 2: op = rv_op_fcvt_l_h; break;
case 3: op = rv_op_fcvt_lu_h; break;
}
break;
case 99:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_w_q; break;
case 1: op = rv_op_fcvt_wu_q; break;
case 2: op = rv_op_fcvt_l_q; break;
case 3: op = rv_op_fcvt_lu_q; break;
}
break;
case 104:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_s_w; break;
case 1: op = rv_op_fcvt_s_wu; break;
case 2: op = rv_op_fcvt_s_l; break;
case 3: op = rv_op_fcvt_s_lu; break;
}
break;
case 105:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_d_w; break;
case 1: op = rv_op_fcvt_d_wu; break;
case 2: op = rv_op_fcvt_d_l; break;
case 3: op = rv_op_fcvt_d_lu; break;
}
break;
case 106:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_h_w; break;
case 1: op = rv_op_fcvt_h_wu; break;
case 2: op = rv_op_fcvt_h_l; break;
case 3: op = rv_op_fcvt_h_lu; break;
}
break;
case 107:
switch (((inst >> 20) & 0b11111)) {
case 0: op = rv_op_fcvt_q_w; break;
case 1: op = rv_op_fcvt_q_wu; break;
case 2: op = rv_op_fcvt_q_l; break;
case 3: op = rv_op_fcvt_q_lu; break;
}
break;
case 112:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_x_s; break;
case 1: op = rv_op_fclass_s; break;
}
break;
case 113:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_x_d; break;
case 1: op = rv_op_fclass_d; break;
}
break;
case 114:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_x_h; break;
case 1: op = rv_op_fclass_h; break;
}
break;
case 115:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_x_q; break;
case 1: op = rv_op_fclass_q; break;
}
break;
case 120:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_s_x; break;
}
break;
case 121:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_d_x; break;
}
break;
case 122:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_h_x; break;
}
break;
case 123:
switch (((inst >> 17) & 0b11111000) | ((inst >> 12) & 0b00000111)) {
case 0: op = rv_op_fmv_q_x; break;
}
break;
}
break;
case 22:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_addid; break;
case 1:
switch (((inst >> 26) & 0b111111)) {
case 0: op = rv_op_sllid; break;
}
break;
case 5:
switch (((inst >> 26) & 0b111111)) {
case 0: op = rv_op_srlid; break;
case 16: op = rv_op_sraid; break;
}
break;
}
break;
case 24:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_beq; break;
case 1: op = rv_op_bne; break;
case 4: op = rv_op_blt; break;
case 5: op = rv_op_bge; break;
case 6: op = rv_op_bltu; break;
case 7: op = rv_op_bgeu; break;
}
break;
case 25:
switch (((inst >> 12) & 0b111)) {
case 0: op = rv_op_jalr; break;
}
break;
case 27: op = rv_op_jal; break;
case 28:
switch (((inst >> 12) & 0b111)) {
case 0:
switch (((inst >> 20) & 0b111111100000) | ((inst >> 7) & 0b000000011111)) {
case 0:
switch (((inst >> 15) & 0b1111111111)) {
case 0: op = rv_op_ecall; break;
case 32: op = rv_op_ebreak; break;
case 64: op = rv_op_uret; break;
}
break;
case 256:
switch (((inst >> 20) & 0b11111)) {
case 2:
switch (((inst >> 15) & 0b11111)) {
case 0: op = rv_op_sret; break;
}
break;
case 4: op = rv_op_sfence_vm; break;
case 5:
switch (((inst >> 15) & 0b11111)) {
case 0: op = rv_op_wfi; break;
}
break;
}
break;
case 288: op = rv_op_sfence_vma; break;
case 512:
switch (((inst >> 15) & 0b1111111111)) {
case 64: op = rv_op_hret; break;
}
break;
case 768:
switch (((inst >> 15) & 0b1111111111)) {
case 64: op = rv_op_mret; break;
}
break;
case 1952:
switch (((inst >> 15) & 0b1111111111)) {
case 576: op = rv_op_dret; break;
}
break;
}
break;
case 1: op = rv_op_csrrw; break;
case 2: op = rv_op_csrrs; break;
case 3: op = rv_op_csrrc; break;
case 5: op = rv_op_csrrwi; break;
case 6: op = rv_op_csrrsi; break;
case 7: op = rv_op_csrrci; break;
}
break;
case 30:
switch (((inst >> 22) & 0b1111111000) | ((inst >> 12) & 0b0000000111)) {
case 0: op = rv_op_addd; break;
case 1: op = rv_op_slld; break;
case 5: op = rv_op_srld; break;
case 8: op = rv_op_muld; break;
case 12: op = rv_op_divd; break;
case 13: op = rv_op_divud; break;
case 14: op = rv_op_remd; break;
case 15: op = rv_op_remud; break;
case 256: op = rv_op_subd; break;
case 261: op = rv_op_srad; break;
}
break;
}
break;
}
dec->op = op;
}
/* operand extractors */
static uint32_t operand_rd(rv_inst inst) {
return (inst << 52) >> 59;
}
static uint32_t operand_rs1(rv_inst inst) {
return (inst << 44) >> 59;
}
static uint32_t operand_rs2(rv_inst inst) {
return (inst << 39) >> 59;
}
static uint32_t operand_rs3(rv_inst inst) {
return (inst << 32) >> 59;
}
static uint32_t operand_aq(rv_inst inst) {
return (inst << 37) >> 63;
}
static uint32_t operand_rl(rv_inst inst) {
return (inst << 38) >> 63;
}
static uint32_t operand_pred(rv_inst inst) {
return (inst << 36) >> 60;
}
static uint32_t operand_succ(rv_inst inst) {
return (inst << 40) >> 60;
}
static uint32_t operand_rm(rv_inst inst) {
return (inst << 49) >> 61;
}
static uint32_t operand_shamt5(rv_inst inst) {
return (inst << 39) >> 59;
}
static uint32_t operand_shamt6(rv_inst inst) {
return (inst << 38) >> 58;
}
static uint32_t operand_shamt7(rv_inst inst) {
return (inst << 37) >> 57;
}
static uint32_t operand_crdq(rv_inst inst) {
return (inst << 59) >> 61;
}
static uint32_t operand_crs1q(rv_inst inst) {
return (inst << 54) >> 61;
}
static uint32_t operand_crs1rdq(rv_inst inst) {
return (inst << 54) >> 61;
}
static uint32_t operand_crs2q(rv_inst inst) {
return (inst << 59) >> 61;
}
static uint32_t operand_crd(rv_inst inst) {
return (inst << 52) >> 59;
}
static uint32_t operand_crs1(rv_inst inst) {
return (inst << 52) >> 59;
}
static uint32_t operand_crs1rd(rv_inst inst) {
return (inst << 52) >> 59;
}
static uint32_t operand_crs2(rv_inst inst) {
return (inst << 57) >> 59;
}
static uint32_t operand_cimmsh5(rv_inst inst) {
return (inst << 57) >> 59;
}
static uint32_t operand_csr12(rv_inst inst) {
return (inst << 32) >> 52;
}
static int32_t operand_imm12(rv_inst inst) {
return ((int64_t)inst << 32) >> 52;
}
static int32_t operand_imm20(rv_inst inst) {
return (((int64_t)inst << 32) >> 44) << 12;
}
static int32_t operand_jimm20(rv_inst inst) {
return (((int64_t)inst << 32) >> 63) << 20 |
((inst << 33) >> 54) << 1 |
((inst << 43) >> 63) << 11 |
((inst << 44) >> 56) << 12;
}
static int32_t operand_simm12(rv_inst inst) {
return (((int64_t)inst << 32) >> 57) << 5 |
(inst << 52) >> 59;
}
static int32_t operand_sbimm12(rv_inst inst) {
return (((int64_t)inst << 32) >> 63) << 12 |
((inst << 33) >> 58) << 5 |
((inst << 52) >> 60) << 1 |
((inst << 56) >> 63) << 11;
}
static uint32_t operand_cimmsh6(rv_inst inst) {
return ((inst << 51) >> 63) << 5 |
(inst << 57) >> 59;
}
static int32_t operand_cimmi(rv_inst inst) {
return (((int64_t)inst << 51) >> 63) << 5 |
(inst << 57) >> 59;
}
static int32_t operand_cimmui(rv_inst inst) {
return (((int64_t)inst << 51) >> 63) << 17 |
((inst << 57) >> 59) << 12;
}
static uint32_t operand_cimmlwsp(rv_inst inst) {
return ((inst << 51) >> 63) << 5 |
((inst << 57) >> 61) << 2 |
((inst << 60) >> 62) << 6;
}
static uint32_t operand_cimmldsp(rv_inst inst) {
return ((inst << 51) >> 63) << 5 |
((inst << 57) >> 62) << 3 |
((inst << 59) >> 61) << 6;
}
static uint32_t operand_cimmlqsp(rv_inst inst) {
return ((inst << 51) >> 63) << 5 |
((inst << 57) >> 63) << 4 |
((inst << 58) >> 60) << 6;
}
static int32_t operand_cimm16sp(rv_inst inst) {
return (((int64_t)inst << 51) >> 63) << 9 |
((inst << 57) >> 63) << 4 |
((inst << 58) >> 63) << 6 |
((inst << 59) >> 62) << 7 |
((inst << 61) >> 63) << 5;
}
static int32_t operand_cimmj(rv_inst inst) {
return (((int64_t)inst << 51) >> 63) << 11 |
((inst << 52) >> 63) << 4 |
((inst << 53) >> 62) << 8 |
((inst << 55) >> 63) << 10 |
((inst << 56) >> 63) << 6 |
((inst << 57) >> 63) << 7 |
((inst << 58) >> 61) << 1 |
((inst << 61) >> 63) << 5;
}
static int32_t operand_cimmb(rv_inst inst) {
return (((int64_t)inst << 51) >> 63) << 8 |
((inst << 52) >> 62) << 3 |
((inst << 57) >> 62) << 6 |
((inst << 59) >> 62) << 1 |
((inst << 61) >> 63) << 5;
}
static uint32_t operand_cimmswsp(rv_inst inst) {
return ((inst << 51) >> 60) << 2 |
((inst << 55) >> 62) << 6;
}
static uint32_t operand_cimmsdsp(rv_inst inst) {
return ((inst << 51) >> 61) << 3 |
((inst << 54) >> 61) << 6;
}
static uint32_t operand_cimmsqsp(rv_inst inst) {
return ((inst << 51) >> 62) << 4 |
((inst << 53) >> 60) << 6;
}
static uint32_t operand_cimm4spn(rv_inst inst) {
return ((inst << 51) >> 62) << 4 |
((inst << 53) >> 60) << 6 |
((inst << 57) >> 63) << 2 |
((inst << 58) >> 63) << 3;
}
static uint32_t operand_cimmw(rv_inst inst) {
return ((inst << 51) >> 61) << 3 |
((inst << 57) >> 63) << 2 |
((inst << 58) >> 63) << 6;
}
static uint32_t operand_cimmd(rv_inst inst) {
return ((inst << 51) >> 61) << 3 |
((inst << 57) >> 62) << 6;
}
static uint32_t operand_cimmq(rv_inst inst) {
return ((inst << 51) >> 62) << 4 |
((inst << 53) >> 63) << 8 |
((inst << 57) >> 62) << 6;
}
/* decode operands */
static void decode_inst_operands(rv_decode *dec)
{
rv_inst inst = dec->inst;
dec->codec = opcode_data[dec->op].codec;
switch (dec->codec) {
case rv_codec_none:
dec->rd = dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = 0;
break;
case rv_codec_u:
dec->rd = operand_rd(inst);
dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = operand_imm20(inst);
break;
case rv_codec_uj:
dec->rd = operand_rd(inst);
dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = operand_jimm20(inst);
break;
case rv_codec_i:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_imm12(inst);
break;
case rv_codec_i_sh5:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_shamt5(inst);
break;
case rv_codec_i_sh6:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_shamt6(inst);
break;
case rv_codec_i_sh7:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_shamt7(inst);
break;
case rv_codec_i_csr:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_csr12(inst);
break;
case rv_codec_s:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->imm = operand_simm12(inst);
break;
case rv_codec_sb:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->imm = operand_sbimm12(inst);
break;
case rv_codec_r:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->imm = 0;
break;
case rv_codec_r_m:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->imm = 0;
dec->rm = operand_rm(inst);
break;
case rv_codec_r4_m:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->rs3 = operand_rs3(inst);
dec->imm = 0;
dec->rm = operand_rm(inst);
break;
case rv_codec_r_a:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = operand_rs2(inst);
dec->imm = 0;
dec->aq = operand_aq(inst);
dec->rl = operand_rl(inst);
break;
case rv_codec_r_l:
dec->rd = operand_rd(inst);
dec->rs1 = operand_rs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = 0;
dec->aq = operand_aq(inst);
dec->rl = operand_rl(inst);
break;
case rv_codec_r_f:
dec->rd = dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->pred = operand_pred(inst);
dec->succ = operand_succ(inst);
dec->imm = 0;
break;
case rv_codec_cb:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmb(inst);
break;
case rv_codec_cb_imm:
dec->rd = dec->rs1 = operand_crs1rdq(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmi(inst);
break;
case rv_codec_cb_sh5:
dec->rd = dec->rs1 = operand_crs1rdq(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmsh5(inst);
break;
case rv_codec_cb_sh6:
dec->rd = dec->rs1 = operand_crs1rdq(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmsh6(inst);
break;
case rv_codec_ci:
dec->rd = dec->rs1 = operand_crs1rd(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmi(inst);
break;
case rv_codec_ci_sh5:
dec->rd = dec->rs1 = operand_crs1rd(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmsh5(inst);
break;
case rv_codec_ci_sh6:
dec->rd = dec->rs1 = operand_crs1rd(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmsh6(inst);
break;
case rv_codec_ci_16sp:
dec->rd = rv_ireg_sp;
dec->rs1 = rv_ireg_sp;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimm16sp(inst);
break;
case rv_codec_ci_lwsp:
dec->rd = operand_crd(inst);
dec->rs1 = rv_ireg_sp;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmlwsp(inst);
break;
case rv_codec_ci_ldsp:
dec->rd = operand_crd(inst);
dec->rs1 = rv_ireg_sp;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmldsp(inst);
break;
case rv_codec_ci_lqsp:
dec->rd = operand_crd(inst);
dec->rs1 = rv_ireg_sp;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmlqsp(inst);
break;
case rv_codec_ci_li:
dec->rd = operand_crd(inst);
dec->rs1 = rv_ireg_zero;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmi(inst);
break;
case rv_codec_ci_lui:
dec->rd = operand_crd(inst);
dec->rs1 = rv_ireg_zero;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmui(inst);
break;
case rv_codec_ci_none:
dec->rd = dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = 0;
break;
case rv_codec_ciw_4spn:
dec->rd = operand_crdq(inst) + 8;
dec->rs1 = rv_ireg_sp;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimm4spn(inst);
break;
case rv_codec_cj:
dec->rd = dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmj(inst);
break;
case rv_codec_cj_jal:
dec->rd = rv_ireg_ra;
dec->rs1 = dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmj(inst);
break;
case rv_codec_cl_lw:
dec->rd = operand_crdq(inst) + 8;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmw(inst);
break;
case rv_codec_cl_ld:
dec->rd = operand_crdq(inst) + 8;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmd(inst);
break;
case rv_codec_cl_lq:
dec->rd = operand_crdq(inst) + 8;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = rv_ireg_zero;
dec->imm = operand_cimmq(inst);
break;
case rv_codec_cr:
dec->rd = dec->rs1 = operand_crs1rd(inst);
dec->rs2 = operand_crs2(inst);
dec->imm = 0;
break;
case rv_codec_cr_mv:
dec->rd = operand_crd(inst);
dec->rs1 = operand_crs2(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = 0;
break;
case rv_codec_cr_jalr:
dec->rd = rv_ireg_ra;
dec->rs1 = operand_crs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = 0;
break;
case rv_codec_cr_jr:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_crs1(inst);
dec->rs2 = rv_ireg_zero;
dec->imm = 0;
break;
case rv_codec_cs:
dec->rd = dec->rs1 = operand_crs1rdq(inst) + 8;
dec->rs2 = operand_crs2q(inst) + 8;
dec->imm = 0;
break;
case rv_codec_cs_sw:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = operand_crs2q(inst) + 8;
dec->imm = operand_cimmw(inst);
break;
case rv_codec_cs_sd:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = operand_crs2q(inst) + 8;
dec->imm = operand_cimmd(inst);
break;
case rv_codec_cs_sq:
dec->rd = rv_ireg_zero;
dec->rs1 = operand_crs1q(inst) + 8;
dec->rs2 = operand_crs2q(inst) + 8;
dec->imm = operand_cimmq(inst);
break;
case rv_codec_css_swsp:
dec->rd = rv_ireg_zero;
dec->rs1 = rv_ireg_sp;
dec->rs2 = operand_crs2(inst);
dec->imm = operand_cimmswsp(inst);
break;
case rv_codec_css_sdsp:
dec->rd = rv_ireg_zero;
dec->rs1 = rv_ireg_sp;
dec->rs2 = operand_crs2(inst);
dec->imm = operand_cimmsdsp(inst);
break;
case rv_codec_css_sqsp:
dec->rd = rv_ireg_zero;
dec->rs1 = rv_ireg_sp;
dec->rs2 = operand_crs2(inst);
dec->imm = operand_cimmsqsp(inst);
break;
};
}
/* decompress instruction */
static void decode_inst_decompress(rv_decode *dec, rv_isa isa)
{
int decomp_op;
switch (isa) {
case rv32: decomp_op = opcode_data[dec->op].decomp_rv32; break;
case rv64: decomp_op = opcode_data[dec->op].decomp_rv64; break;
case rv128: decomp_op = opcode_data[dec->op].decomp_rv128; break;
}
if (decomp_op != rv_op_illegal) {
if ((opcode_data[dec->op].decomp_data & rvcd_imm_nz) && dec->imm == 0) {
dec->op = rv_op_illegal;
} else {
dec->op = decomp_op;
dec->codec = opcode_data[decomp_op].codec;
}
}
}
/* check constraint */
static bool check_constraints(rv_decode *dec, const rvc_constraint *c)
{
if (c == rvcc_last)
return false;
int32_t imm = dec->imm;
uint8_t rd = dec->rd, rs1 = dec->rs1, rs2 = dec->rs2;
while (*c != rvc_end) {
switch (*c) {
case rvc_rd_eq_ra: if (!(rd == 1)) return false; break;
case rvc_rd_eq_x0: if (!(rd == 0)) return false; break;
case rvc_rs1_eq_x0: if (!(rs1 == 0)) return false; break;
case rvc_rs2_eq_x0: if (!(rs2 == 0)) return false; break;
case rvc_rs2_eq_rs1: if (!(rs2 == rs1)) return false; break;
case rvc_rs1_eq_ra: if (!(rs1 == 1)) return false; break;
case rvc_imm_eq_zero: if (!(imm == 0)) return false; break;
case rvc_imm_eq_n1: if (!(imm == -1)) return false; break;
case rvc_imm_eq_p1: if (!(imm == 1)) return false; break;
case rvc_csr_eq_0x001: if (!(imm == 0x001)) return false; break;
case rvc_csr_eq_0x002: if (!(imm == 0x002)) return false; break;
case rvc_csr_eq_0x003: if (!(imm == 0x003)) return false; break;
case rvc_csr_eq_0xc00: if (!(imm == 0xc00)) return false; break;
case rvc_csr_eq_0xc01: if (!(imm == 0xc01)) return false; break;
case rvc_csr_eq_0xc02: if (!(imm == 0xc02)) return false; break;
case rvc_csr_eq_0xc80: if (!(imm == 0xc80)) return false; break;
case rvc_csr_eq_0xc81: if (!(imm == 0xc81)) return false; break;
case rvc_csr_eq_0xc82: if (!(imm == 0xc82)) return false; break;
default: break;
}
c++;
}
return true;
}
/* lift instruction to pseudo-instruction */
static void decode_inst_lift_pseudo(rv_decode *dec)
{
const rv_comp_data *comp_data = opcode_data[dec->op].pseudo;
if (!comp_data) {
return;
}
while (comp_data->constraints) {
if (check_constraints(dec, comp_data->constraints)) {
dec->op = comp_data->op;
dec->codec = opcode_data[dec->op].codec;
return;
}
comp_data++;
}
}
/* format instruction */
static char *append(char *buf, const char *src, const char *end)
{
while (buf < end && *src)
*buf++ = *src++;
return buf;
}
#define INST_FMT_2 "%04" PRIx64 " "
#define INST_FMT_4 "%08" PRIx64 " "
#define INST_FMT_6 "%012" PRIx64 " "
#define INST_FMT_8 "%016" PRIx64 " "
static void decode_inst_format(char *buf, size_t buflen, size_t tab, rv_decode *dec)
{
char tmp[64];
const char *fmt;
const char *start = buf;
const char *end = &buf[buflen];
size_t len = riscv_inst_length(dec->inst);
switch (len) {
case 2:
buf += snprintf(buf, buflen, INST_FMT_2, dec->inst);
break;
case 4:
buf += snprintf(buf, buflen, INST_FMT_4, dec->inst);
break;
case 6:
buf += snprintf(buf, buflen, INST_FMT_6, dec->inst);
break;
default:
buf += snprintf(buf, buflen, INST_FMT_8, dec->inst);
break;
}
fmt = opcode_data[dec->op].format;
while (*fmt) {
switch (*fmt) {
case 'O':
buf = append(buf, opcode_data[dec->op].name, end);
break;
case '(':
buf = append(buf, "(", end);
break;
case ',':
buf = append(buf, ",", end);
break;
case ')':
buf = append(buf, ")", end);
break;
case '0':
buf = append(buf, rv_ireg_name_sym[dec->rd], end);
break;
case '1':
buf = append(buf, rv_ireg_name_sym[dec->rs1], end);
break;
case '2':
buf = append(buf, rv_ireg_name_sym[dec->rs2], end);
break;
case '3':
buf = append(buf, rv_freg_name_sym[dec->rd], end);
break;
case '4':
buf = append(buf, rv_freg_name_sym[dec->rs1], end);
break;
case '5':
buf = append(buf, rv_freg_name_sym[dec->rs2], end);
break;
case '6':
buf = append(buf, rv_freg_name_sym[dec->rs3], end);
break;
case '7':
snprintf(tmp, sizeof(tmp), "%d", dec->rs1);
buf = append(buf, tmp, end);
break;
case 'i':
snprintf(tmp, sizeof(tmp), "%d", dec->imm);
buf = append(buf, tmp, end);
break;
case 'o':
snprintf(tmp, sizeof(tmp), "%d", dec->imm);
buf = append(buf, tmp, end);
while (buf < &start[2*tab]) {
*buf++ = ' ';
}
snprintf(tmp, sizeof(tmp), "# 0x%" PRIx64,
dec->pc + dec->imm);
buf = append(buf, tmp, end);
break;
case 'c': {
const char *name = csr_name(dec->imm & 0xfff);
if (name) {
buf = append(buf, name, end);
} else {
snprintf(tmp, sizeof(tmp), "0x%03x", dec->imm & 0xfff);
buf = append(buf, tmp, end);
}
break;
}
case 'r':
switch (dec->rm) {
case rv_rm_rne:
buf = append(buf, "rne", end);
break;
case rv_rm_rtz:
buf = append(buf, "rtz", end);
break;
case rv_rm_rdn:
buf = append(buf, "rdn", end);
break;
case rv_rm_rup:
buf = append(buf, "rup", end);
break;
case rv_rm_rmm:
buf = append(buf, "rmm", end);
break;
case rv_rm_dyn:
buf = append(buf, "dyn", end);
break;
default:
buf = append(buf, "inv", end);
break;
}
break;
case 'p':
if (dec->pred & rv_fence_i) {
buf = append(buf, "i", end);
}
if (dec->pred & rv_fence_o) {
buf = append(buf, "o", end);
}
if (dec->pred & rv_fence_r) {
buf = append(buf, "r", end);
}
if (dec->pred & rv_fence_w) {
buf = append(buf, "w", end);
}
break;
case 's':
if (dec->succ & rv_fence_i) {
buf = append(buf, "i", end);
}
if (dec->succ & rv_fence_o) {
buf = append(buf, "o", end);
}
if (dec->succ & rv_fence_r) {
buf = append(buf, "r", end);
}
if (dec->succ & rv_fence_w) {
buf = append(buf, "w", end);
}
break;
case '\t':
while (buf < &start[tab]) {
*buf++ = ' ';
}
break;
case 'A':
if (dec->aq) {
buf = append(buf, ".aq", end);
}
break;
case 'R':
if (dec->rl) {
buf = append(buf, ".rl", end);
}
break;
default:
break;
}
fmt++;
}
*buf = '\0';
}
/* instruction length */
size_t riscv_inst_length(rv_inst inst)
{
/* NOTE: supports maximum instruction size of 64-bits */
/* instruction length coding
*
* aa - 16 bit aa != 11
* bbb11 - 32 bit bbb != 111
* 011111 - 48 bit
* 0111111 - 64 bit
*/
return (inst & 0b11) != 0b11 ? 2
: (inst & 0b11100) != 0b11100 ? 4
: (inst & 0b111111) == 0b011111 ? 6
: (inst & 0b1111111) == 0b0111111 ? 8
: 0;
}
/* instruction fetch */
void riscv_inst_fetch(const uint8_t *data, rv_inst *instp, size_t *length)
{
rv_inst inst = ((rv_inst)data[1] << 8) | ((rv_inst)data[0]);
size_t len = *length = riscv_inst_length(inst);
if (len >= 8) inst |= ((rv_inst)data[7] << 56) | ((rv_inst)data[6] << 48);
if (len >= 6) inst |= ((rv_inst)data[5] << 40) | ((rv_inst)data[4] << 32);
if (len >= 4) inst |= ((rv_inst)data[3] << 24) | ((rv_inst)data[2] << 16);
*instp = inst;
}
/* disassemble instruction */
void riscv_disasm_inst(char *buf, size_t buflen, rv_isa isa, uint64_t pc, rv_inst inst)
{
rv_decode dec{};
dec.pc = pc;
dec.inst = inst;
decode_inst_opcode(&dec, isa);
decode_inst_operands(&dec);
decode_inst_decompress(&dec, isa);
decode_inst_lift_pseudo(&dec);
decode_inst_format(buf, buflen, 32, &dec);
}
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