1 /*- 2 * Copyright (c) 2016-2018 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Portions of this software were developed by SRI International and the 6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Portions of this software were developed by the University of Cambridge 10 * Computer Laboratory as part of the CTSRD Project, with support from the 11 * UK Higher Education Innovation Fund (HEIF). 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <ddb/ddb.h> 38 #include <ddb/db_access.h> 39 #include <ddb/db_sym.h> 40 41 #include <machine/encoding.h> 42 43 #define X_RA 1 44 #define X_SP 2 45 #define X_GP 3 46 #define X_TP 4 47 #define X_T0 5 48 #define X_T1 6 49 #define X_T2 7 50 #define X_T3 28 51 52 #define RD_SHIFT 7 53 #define RD_MASK (0x1f << RD_SHIFT) 54 #define RS1_SHIFT 15 55 #define RS1_MASK (0x1f << RS1_SHIFT) 56 #define RS2_SHIFT 20 57 #define RS2_MASK (0x1f << RS2_SHIFT) 58 #define IMM_SHIFT 20 59 #define IMM_MASK (0xfff << IMM_SHIFT) 60 61 static char *reg_name[32] = { 62 "zero", "ra", "sp", "gp", "tp", "t0", "t1", "t2", 63 "s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5", 64 "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7", 65 "s8", "s9", "s10", "s11", "t3", "t4", "t5", "t6" 66 }; 67 68 static char *fp_reg_name[32] = { 69 "ft0", "ft1", "ft2", "ft3", "ft4", "ft5", "ft6", "ft7", 70 "fs0", "fs1", "fa0", "fa1", "fa2", "fa3", "fa4", "fa5", 71 "fa6", "fa7", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7", 72 "fs8", "fs9", "fs10", "fs11", "ft8", "ft9", "ft10", "ft11" 73 }; 74 75 struct riscv_op { 76 char *name; 77 char *fmt; 78 int match; 79 int mask; 80 int (*match_func)(struct riscv_op *op, uint32_t insn); 81 }; 82 83 static int 84 m_op(struct riscv_op *op, uint32_t insn) 85 { 86 87 if (((insn ^ op->match) & op->mask) == 0) 88 return (1); 89 90 return (0); 91 } 92 93 static struct riscv_op riscv_opcodes[] = { 94 /* Aliases first */ 95 {"ret","", MATCH_JALR | (X_RA << RS1_SHIFT), 96 MASK_JALR | RD_MASK | RS1_MASK | IMM_MASK, m_op }, 97 98 { "beq", "s,t,p", MATCH_BEQ, MASK_BEQ, m_op }, 99 { "bne", "s,t,p", MATCH_BNE, MASK_BNE, m_op }, 100 { "blt", "s,t,p", MATCH_BLT, MASK_BLT, m_op }, 101 { "bge", "s,t,p", MATCH_BGE, MASK_BGE, m_op }, 102 { "bltu", "s,t,p", MATCH_BLTU, MASK_BLTU, m_op }, 103 { "bgeu", "s,t,p", MATCH_BGEU, MASK_BGEU, m_op }, 104 { "jalr", "d,o(s)", MATCH_JALR, MASK_JALR, m_op }, 105 { "jal", "d,a", MATCH_JAL, MASK_JAL, m_op }, 106 { "lui", "d,u", MATCH_LUI, MASK_LUI, m_op }, 107 { "auipc", "d,u", MATCH_AUIPC, MASK_AUIPC, m_op }, 108 { "addi", "d,s,j", MATCH_ADDI, MASK_ADDI, m_op }, 109 { "slli", "d,s,>", MATCH_SLLI, MASK_SLLI, m_op }, 110 { "slti", "d,s,j", MATCH_SLTI, MASK_SLTI, m_op }, 111 { "sltiu", "d,s,j", MATCH_SLTIU, MASK_SLTIU, m_op }, 112 { "xori", "d,s,j", MATCH_XORI, MASK_XORI, m_op }, 113 { "srli", "d,s,>", MATCH_SRLI, MASK_SRLI, m_op }, 114 { "srai", "d,s,>", MATCH_SRAI, MASK_SRAI, m_op }, 115 { "ori", "d,s,j", MATCH_ORI, MASK_ORI, m_op }, 116 { "andi", "d,s,j", MATCH_ANDI, MASK_ANDI, m_op }, 117 { "add", "d,s,t", MATCH_ADD, MASK_ADD, m_op }, 118 { "sub", "d,s,t", MATCH_SUB, MASK_SUB, m_op }, 119 { "sll", "d,s,t", MATCH_SLL, MASK_SLL, m_op }, 120 { "slt", "d,s,t", MATCH_SLT, MASK_SLT, m_op }, 121 { "sltu", "d,s,t", MATCH_SLTU, MASK_SLTU, m_op }, 122 { "xor", "d,s,t", MATCH_XOR, MASK_XOR, m_op }, 123 { "srl", "d,s,t", MATCH_SRL, MASK_SRL, m_op }, 124 { "sra", "d,s,t", MATCH_SRA, MASK_SRA, m_op }, 125 { "or", "d,s,t", MATCH_OR, MASK_OR, m_op }, 126 { "and", "d,s,t", MATCH_AND, MASK_AND, m_op }, 127 { "addiw", "d,s,j", MATCH_ADDIW, MASK_ADDIW, m_op }, 128 { "slliw", "d,s,<", MATCH_SLLIW, MASK_SLLIW, m_op }, 129 { "srliw", "d,s,<", MATCH_SRLIW, MASK_SRLIW, m_op }, 130 { "sraiw", "d,s,<", MATCH_SRAIW, MASK_SRAIW, m_op }, 131 { "addw", "d,s,t", MATCH_ADDW, MASK_ADDW, m_op }, 132 { "subw", "d,s,t", MATCH_SUBW, MASK_SUBW, m_op }, 133 { "sllw", "d,s,t", MATCH_SLLW, MASK_SLLW, m_op }, 134 { "srlw", "d,s,t", MATCH_SRLW, MASK_SRLW, m_op }, 135 { "sraw", "d,s,t", MATCH_SRAW, MASK_SRAW, m_op }, 136 { "lb", "d,o(s)", MATCH_LB, MASK_LB, m_op }, 137 { "lh", "d,o(s)", MATCH_LH, MASK_LH, m_op }, 138 { "lw", "d,o(s)", MATCH_LW, MASK_LW, m_op }, 139 { "ld", "d,o(s)", MATCH_LD, MASK_LD, m_op }, 140 { "lbu", "d,o(s)", MATCH_LBU, MASK_LBU, m_op }, 141 { "lhu", "d,o(s)", MATCH_LHU, MASK_LHU, m_op }, 142 { "lwu", "d,o(s)", MATCH_LWU, MASK_LWU, m_op }, 143 { "sb", "t,q(s)", MATCH_SB, MASK_SB, m_op }, 144 { "sh", "t,q(s)", MATCH_SH, MASK_SH, m_op }, 145 { "sw", "t,q(s)", MATCH_SW, MASK_SW, m_op }, 146 { "sd", "t,q(s)", MATCH_SD, MASK_SD, m_op }, 147 { "fence", "P,Q", MATCH_FENCE, MASK_FENCE, m_op }, 148 { "fence.i", "", MATCH_FENCE_I, MASK_FENCE_I, m_op }, 149 { "mul", "d,s,t", MATCH_MUL, MASK_MUL, m_op }, 150 { "mulh", "d,s,t", MATCH_MULH, MASK_MULH, m_op }, 151 { "mulhsu", "d,s,t", MATCH_MULHSU, MASK_MULHSU, m_op }, 152 { "mulhu", "d,s,t", MATCH_MULHU, MASK_MULHU, m_op }, 153 { "div", "d,s,t", MATCH_DIV, MASK_DIV, m_op }, 154 { "divu", "d,s,t", MATCH_DIVU, MASK_DIVU, m_op }, 155 { "rem", "d,s,t", MATCH_REM, MASK_REM, m_op }, 156 { "remu", "d,s,t", MATCH_REMU, MASK_REMU, m_op }, 157 { "mulw", "d,s,t", MATCH_MULW, MASK_MULW, m_op }, 158 { "divw", "d,s,t", MATCH_DIVW, MASK_DIVW, m_op }, 159 { "divuw", "d,s,t", MATCH_DIVUW, MASK_DIVUW, m_op }, 160 { "remw", "d,s,t", MATCH_REMW, MASK_REMW, m_op }, 161 { "remuw", "d,s,t", MATCH_REMUW, MASK_REMUW, m_op }, 162 { "amoadd.w", "d,t,0(s)", MATCH_AMOADD_W, MASK_AMOADD_W, m_op }, 163 { "amoxor.w", "d,t,0(s)", MATCH_AMOXOR_W, MASK_AMOXOR_W, m_op }, 164 { "amoor.w", "d,t,0(s)", MATCH_AMOOR_W, MASK_AMOOR_W, m_op }, 165 { "amoand.w", "d,t,0(s)", MATCH_AMOAND_W, MASK_AMOAND_W, m_op }, 166 { "amomin.w", "d,t,0(s)", MATCH_AMOMIN_W, MASK_AMOMIN_W, m_op }, 167 { "amomax.w", "d,t,0(s)", MATCH_AMOMAX_W, MASK_AMOMAX_W, m_op }, 168 { "amominu.w", "d,t,0(s)", MATCH_AMOMINU_W, MASK_AMOMINU_W,m_op }, 169 { "amomaxu.w", "d,t,0(s)", MATCH_AMOMAXU_W, MASK_AMOMAXU_W,m_op }, 170 { "amoswap.w", "d,t,0(s)", MATCH_AMOSWAP_W, MASK_AMOSWAP_W,m_op }, 171 { "lr.w", "d,0(s)", MATCH_LR_W, MASK_LR_W, m_op }, 172 { "sc.w", "d,t,0(s)", MATCH_SC_W, MASK_SC_W, m_op }, 173 { "amoadd.d", "d,t,0(s)", MATCH_AMOADD_D, MASK_AMOADD_D, m_op }, 174 { "amoxor.d", "d,t,0(s)", MATCH_AMOXOR_D, MASK_AMOXOR_D, m_op }, 175 { "amoor.d", "d,t,0(s)", MATCH_AMOOR_D, MASK_AMOOR_D, m_op }, 176 { "amoand.d", "d,t,0(s)", MATCH_AMOAND_D, MASK_AMOAND_D, m_op }, 177 { "amomin.d", "d,t,0(s)", MATCH_AMOMIN_D, MASK_AMOMIN_D, m_op }, 178 { "amomax.d", "d,t,0(s)", MATCH_AMOMAX_D, MASK_AMOMAX_D, m_op }, 179 { "amominu.d", "d,t,0(s)", MATCH_AMOMINU_D, MASK_AMOMINU_D,m_op }, 180 { "amomaxu.d", "d,t,0(s)", MATCH_AMOMAXU_D, MASK_AMOMAXU_D,m_op }, 181 { "amoswap.d", "d,t,0(s)", MATCH_AMOSWAP_D, MASK_AMOSWAP_D,m_op }, 182 { "lr.d", "d,0(s)", MATCH_LR_D, MASK_LR_D, m_op }, 183 { "sc.d", "d,t,0(s)", MATCH_SC_D, MASK_SC_D, m_op }, 184 { "ecall", "", MATCH_ECALL, MASK_ECALL, m_op }, 185 { "ebreak", "", MATCH_EBREAK, MASK_EBREAK, m_op }, 186 { "uret", "", MATCH_URET, MASK_URET, m_op }, 187 { "sret", "", MATCH_SRET, MASK_SRET, m_op }, 188 { "mret", "", MATCH_MRET, MASK_MRET, m_op }, 189 { "dret", "", MATCH_DRET, MASK_DRET, m_op }, 190 { "sfence.vma", "", MATCH_SFENCE_VMA, MASK_SFENCE_VMA, m_op }, 191 { "wfi", "", MATCH_WFI, MASK_WFI, m_op }, 192 { "csrrw", "d,E,s", MATCH_CSRRW, MASK_CSRRW, m_op }, 193 { "csrrs", "d,E,s", MATCH_CSRRS, MASK_CSRRS, m_op }, 194 { "csrrc", "d,E,s", MATCH_CSRRC, MASK_CSRRC, m_op }, 195 { "csrrwi", "d,E,Z", MATCH_CSRRWI, MASK_CSRRWI, m_op }, 196 { "csrrsi", "d,E,Z", MATCH_CSRRSI, MASK_CSRRSI, m_op }, 197 { "csrrci", "d,E,Z", MATCH_CSRRCI, MASK_CSRRCI, m_op }, 198 { "fadd.s", "D,S,T", MATCH_FADD_S, MASK_FADD_S, m_op }, 199 { "fsub.s", "D,S,T", MATCH_FSUB_S, MASK_FSUB_S, m_op }, 200 { "fmul.s", "D,S,T", MATCH_FMUL_S, MASK_FMUL_S, m_op }, 201 { "fdiv.s", "D,S,T", MATCH_FDIV_S, MASK_FDIV_S, m_op }, 202 { "fsgnj.s", "D,S,T", MATCH_FSGNJ_S, MASK_FSGNJ_S, m_op }, 203 { "fsgnjn.s", "D,S,T", MATCH_FSGNJN_S, MASK_FSGNJN_S, m_op }, 204 { "fsgnjx.s", "D,S,T", MATCH_FSGNJX_S, MASK_FSGNJX_S, m_op }, 205 { "fmin.s", "D,S,T", MATCH_FMIN_S, MASK_FMIN_S, m_op }, 206 { "fmax.s", "D,S,T", MATCH_FMAX_S, MASK_FMAX_S, m_op }, 207 { "fsqrt.s", "D,S", MATCH_FSQRT_S, MASK_FSQRT_S, m_op }, 208 { "fadd.d", "D,S,T", MATCH_FADD_D, MASK_FADD_D, m_op }, 209 { "fsub.d", "D,S,T", MATCH_FSUB_D, MASK_FSUB_D, m_op }, 210 { "fmul.d", "D,S,T", MATCH_FMUL_D, MASK_FMUL_D, m_op }, 211 { "fdiv.d", "D,S,T", MATCH_FDIV_D, MASK_FDIV_D, m_op }, 212 { "fsgnj.d", "D,S,T", MATCH_FSGNJ_D, MASK_FSGNJ_D, m_op }, 213 { "fsgnjn.d", "D,S,T", MATCH_FSGNJN_D, MASK_FSGNJN_D, m_op }, 214 { "fsgnjx.d", "D,S,T", MATCH_FSGNJX_D, MASK_FSGNJX_D, m_op }, 215 { "fmin.d", "D,S,T", MATCH_FMIN_D, MASK_FMIN_D, m_op }, 216 { "fmax.d", "D,S,T", MATCH_FMAX_D, MASK_FMAX_D, m_op }, 217 { "fcvt.s.d", "D,S", MATCH_FCVT_S_D, MASK_FCVT_S_D, m_op }, 218 { "fcvt.d.s", "D,S", MATCH_FCVT_D_S, MASK_FCVT_D_S, m_op }, 219 { "fsqrt.d", "D,S", MATCH_FSQRT_D, MASK_FSQRT_D, m_op }, 220 { "fadd.q", "D,S,T", MATCH_FADD_Q, MASK_FADD_Q, m_op }, 221 { "fsub.q", "D,S,T", MATCH_FSUB_Q, MASK_FSUB_Q, m_op }, 222 { "fmul.q", "D,S,T", MATCH_FMUL_Q, MASK_FMUL_Q, m_op }, 223 { "fdiv.q", "D,S,T", MATCH_FDIV_Q, MASK_FDIV_Q, m_op }, 224 { "fsgnj.q", "D,S,T", MATCH_FSGNJ_Q, MASK_FSGNJ_Q, m_op }, 225 { "fsgnjn.q", "D,S,T", MATCH_FSGNJN_Q, MASK_FSGNJN_Q, m_op }, 226 { "fsgnjx.q", "D,S,T", MATCH_FSGNJX_Q, MASK_FSGNJX_Q, m_op }, 227 { "fmin.q", "D,S,T", MATCH_FMIN_Q, MASK_FMIN_Q, m_op }, 228 { "fmax.q", "D,S,T", MATCH_FMAX_Q, MASK_FMAX_Q, m_op }, 229 { "fcvt.s.q", "D,S", MATCH_FCVT_S_Q, MASK_FCVT_S_Q, m_op }, 230 { "fcvt.q.s", "D,S", MATCH_FCVT_Q_S, MASK_FCVT_Q_S, m_op }, 231 { "fcvt.d.q", "D,S", MATCH_FCVT_D_Q, MASK_FCVT_D_Q, m_op }, 232 { "fcvt.q.d", "D,S", MATCH_FCVT_Q_D, MASK_FCVT_Q_D, m_op }, 233 { "fsqrt.q", "D,S", MATCH_FSQRT_Q, MASK_FSQRT_Q, m_op }, 234 { "fle.s", "d,S,T", MATCH_FLE_S, MASK_FLE_S, m_op }, 235 { "flt.s", "d,S,T", MATCH_FLT_S, MASK_FLT_S, m_op }, 236 { "feq.s", "d,S,T", MATCH_FEQ_S, MASK_FEQ_S, m_op }, 237 { "fle.d", "d,S,T", MATCH_FLE_D, MASK_FLE_D, m_op }, 238 { "flt.d", "d,S,T", MATCH_FLT_D, MASK_FLT_D, m_op }, 239 { "feq.d", "d,S,T", MATCH_FEQ_D, MASK_FEQ_D, m_op }, 240 { "fle.q", "d,S,T", MATCH_FLE_Q, MASK_FLE_Q, m_op }, 241 { "flt.q", "d,S,T", MATCH_FLT_Q, MASK_FLT_Q, m_op }, 242 { "feq.q", "d,S,T", MATCH_FEQ_Q, MASK_FEQ_Q, m_op }, 243 { "fcvt.w.s", "d,S", MATCH_FCVT_W_S, MASK_FCVT_W_S, m_op }, 244 { "fcvt.wu.s", "d,S", MATCH_FCVT_WU_S, MASK_FCVT_WU_S,m_op }, 245 { "fcvt.l.s", "d,S", MATCH_FCVT_L_S, MASK_FCVT_L_S, m_op }, 246 { "fcvt.lu.s", "d,S", MATCH_FCVT_LU_S, MASK_FCVT_LU_S,m_op }, 247 { "fmv.x.w", "d,S", MATCH_FMV_X_W, MASK_FMV_X_W, m_op }, 248 { "fclass.s", "d,S", MATCH_FCLASS_S, MASK_FCLASS_S, m_op }, 249 { "fcvt.w.d", "d,S", MATCH_FCVT_W_D, MASK_FCVT_W_D, m_op }, 250 { "fcvt.wu.d", "d,S", MATCH_FCVT_WU_D, MASK_FCVT_WU_D,m_op }, 251 { "fcvt.l.d", "d,S", MATCH_FCVT_L_D, MASK_FCVT_L_D, m_op }, 252 { "fcvt.lu.d", "d,S", MATCH_FCVT_LU_D, MASK_FCVT_LU_D,m_op }, 253 { "fmv.x.d", "d,S", MATCH_FMV_X_D, MASK_FMV_X_D, m_op }, 254 { "fclass.d", "d,S", MATCH_FCLASS_D, MASK_FCLASS_D, m_op }, 255 { "fcvt.w.q", "d,S", MATCH_FCVT_W_Q, MASK_FCVT_W_Q, m_op }, 256 { "fcvt.wu.q", "d,S", MATCH_FCVT_WU_Q, MASK_FCVT_WU_Q,m_op }, 257 { "fcvt.l.q", "d,S", MATCH_FCVT_L_Q, MASK_FCVT_L_Q, m_op }, 258 { "fcvt.lu.q", "d,S", MATCH_FCVT_LU_Q, MASK_FCVT_LU_Q,m_op }, 259 { "fmv.x.q", "d,S", MATCH_FMV_X_Q, MASK_FMV_X_Q, m_op }, 260 { "fclass.q", "d,S", MATCH_FCLASS_Q, MASK_FCLASS_Q, m_op }, 261 { "fcvt.s.w", "D,s", MATCH_FCVT_S_W, MASK_FCVT_S_W, m_op }, 262 { "fcvt.s.wu", "D,s", MATCH_FCVT_S_WU, MASK_FCVT_S_WU,m_op }, 263 { "fcvt.s.l", "D,s", MATCH_FCVT_S_L, MASK_FCVT_S_L, m_op }, 264 { "fcvt.s.lu", "D,s", MATCH_FCVT_S_LU, MASK_FCVT_S_LU,m_op }, 265 { "fmv.w.x", "D,s", MATCH_FMV_W_X, MASK_FMV_W_X, m_op }, 266 { "fcvt.d.w", "D,s", MATCH_FCVT_D_W, MASK_FCVT_D_W, m_op }, 267 { "fcvt.d.wu", "D,s", MATCH_FCVT_D_WU, MASK_FCVT_D_WU,m_op }, 268 { "fcvt.d.l", "D,s", MATCH_FCVT_D_L, MASK_FCVT_D_L, m_op }, 269 { "fcvt.d.lu", "D,s", MATCH_FCVT_D_LU, MASK_FCVT_D_LU,m_op }, 270 { "fmv.d.x", "D,s", MATCH_FMV_D_X, MASK_FMV_D_X, m_op }, 271 { "fcvt.q.w", "D,s", MATCH_FCVT_Q_W, MASK_FCVT_Q_W, m_op }, 272 { "fcvt.q.wu", "D,s", MATCH_FCVT_Q_WU, MASK_FCVT_Q_WU,m_op }, 273 { "fcvt.q.l", "D,s", MATCH_FCVT_Q_L, MASK_FCVT_Q_L, m_op }, 274 { "fcvt.q.lu", "D,s", MATCH_FCVT_Q_LU, MASK_FCVT_Q_LU,m_op }, 275 { "fmv.q.x", "D,s", MATCH_FMV_Q_X, MASK_FMV_Q_X, m_op }, 276 { "flw", "D,o(s)", MATCH_FLW, MASK_FLW, m_op }, 277 { "fld", "D,o(s)", MATCH_FLD, MASK_FLD, m_op }, 278 { "flq", "D,o(s)", MATCH_FLQ, MASK_FLQ, m_op }, 279 { "fsw", "T,q(s)", MATCH_FSW, MASK_FSW, m_op }, 280 { "fsd", "T,q(s)", MATCH_FSD, MASK_FSD, m_op }, 281 { "fsq", "T,q(s)", MATCH_FSQ, MASK_FSQ, m_op }, 282 { "fmadd.s", "D,S,T,R", MATCH_FMADD_S, MASK_FMADD_S, m_op }, 283 { "fmsub.s", "D,S,T,R", MATCH_FMSUB_S, MASK_FMSUB_S, m_op }, 284 { "fnmsub.s", "D,S,T,R", MATCH_FNMSUB_S, MASK_FNMSUB_S, m_op }, 285 { "fnmadd.s", "D,S,T,R", MATCH_FNMADD_S, MASK_FNMADD_S, m_op }, 286 { "fmadd.d", "D,S,T,R", MATCH_FMADD_D, MASK_FMADD_D, m_op }, 287 { "fmsub.d", "D,S,T,R", MATCH_FMSUB_D, MASK_FMSUB_D, m_op }, 288 { "fnmsub.d", "D,S,T,R", MATCH_FNMSUB_D, MASK_FNMSUB_D, m_op }, 289 { "fnmadd.d", "D,S,T,R", MATCH_FNMADD_D, MASK_FNMADD_D, m_op }, 290 { "fmadd.q", "D,S,T,R", MATCH_FMADD_Q, MASK_FMADD_Q, m_op }, 291 { "fmsub.q", "D,S,T,R", MATCH_FMSUB_Q, MASK_FMSUB_Q, m_op }, 292 { "fnmsub.q", "D,S,T,R", MATCH_FNMSUB_Q, MASK_FNMSUB_Q, m_op }, 293 { "fnmadd.q", "D,S,T,R", MATCH_FNMADD_Q, MASK_FNMADD_Q, m_op }, 294 { NULL, NULL, 0, 0, NULL }, 295 }; 296 297 static struct riscv_op riscv_c_opcodes[] = { 298 /* Aliases first */ 299 { "ret","",MATCH_C_JR | (X_RA << RD_SHIFT), MASK_C_JR | RD_MASK, m_op}, 300 301 /* C-Compressed ISA Extension Instructions */ 302 { "c.nop", "", MATCH_C_NOP, MASK_C_NOP, m_op }, 303 { "c.ebreak", "", MATCH_C_EBREAK, MASK_C_EBREAK, m_op }, 304 { "c.jr", "d", MATCH_C_JR, MASK_C_JR, m_op }, 305 { "c.jalr", "d", MATCH_C_JALR, MASK_C_JALR, m_op }, 306 { "c.jal", "Ca", MATCH_C_JAL, MASK_C_JAL, m_op }, 307 { "c.ld", "Ct,Cl(Cs)", MATCH_C_LD, MASK_C_LD, m_op }, 308 { "c.sd", "Ct,Cl(Cs)", MATCH_C_SD, MASK_C_SD, m_op }, 309 { "c.addiw", "d,Co", MATCH_C_ADDIW, MASK_C_ADDIW, m_op }, 310 { "c.ldsp", "d,Cn(Cc)", MATCH_C_LDSP, MASK_C_LDSP, m_op }, 311 { "c.sdsp", "CV,CN(Cc)", MATCH_C_SDSP, MASK_C_SDSP, m_op }, 312 { "c.addi4spn", "", MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN, m_op }, 313 { "c.addi16sp", "", MATCH_C_ADDI16SP, MASK_C_ADDI16SP, m_op }, 314 { "c.fld", "CD,Cl(Cs)", MATCH_C_FLD, MASK_C_FLD, m_op }, 315 { "c.lw", "Ct,Ck(Cs)", MATCH_C_LW, MASK_C_LW, m_op }, 316 { "c.flw", "CD,Ck(Cs)", MATCH_C_FLW, MASK_C_FLW, m_op }, 317 { "c.fsd", "CD,Cl(Cs)", MATCH_C_FSD, MASK_C_FSD, m_op }, 318 { "c.sw", "Ct,Ck(Cs)", MATCH_C_SW, MASK_C_SW, m_op }, 319 { "c.fsw", "CD,Ck(Cs)", MATCH_C_FSW, MASK_C_FSW, m_op }, 320 { "c.addi", "d,Co", MATCH_C_ADDI, MASK_C_ADDI, m_op }, 321 { "c.li", "d,Co", MATCH_C_LI, MASK_C_LI, m_op }, 322 { "c.lui", "d,Cu", MATCH_C_LUI, MASK_C_LUI, m_op }, 323 { "c.srli", "Cs,C>", MATCH_C_SRLI, MASK_C_SRLI, m_op }, 324 { "c.srai", "Cs,C>", MATCH_C_SRAI, MASK_C_SRAI, m_op }, 325 { "c.andi", "Cs,Co", MATCH_C_ANDI, MASK_C_ANDI, m_op }, 326 { "c.sub", "Cs,Ct", MATCH_C_SUB, MASK_C_SUB, m_op }, 327 { "c.xor", "Cs,Ct", MATCH_C_XOR, MASK_C_XOR, m_op }, 328 { "c.or", "Cs,Ct", MATCH_C_OR, MASK_C_OR, m_op }, 329 { "c.and", "Cs,Ct", MATCH_C_AND, MASK_C_AND, m_op }, 330 { "c.subw", "Cs,Ct", MATCH_C_SUBW, MASK_C_SUBW, m_op }, 331 { "c.addw", "Cs,Ct", MATCH_C_ADDW, MASK_C_ADDW, m_op }, 332 { "c.j", "Ca", MATCH_C_J, MASK_C_J, m_op }, 333 { "c.beqz", "Cs,Cp", MATCH_C_BEQZ, MASK_C_BEQZ, m_op }, 334 { "c.bnez", "Cs,Cp", MATCH_C_BNEZ, MASK_C_BNEZ, m_op }, 335 { "c.slli", "d,C>", MATCH_C_SLLI, MASK_C_SLLI, m_op }, 336 { "c.fldsp", "D,Cn(Cc)", MATCH_C_FLDSP, MASK_C_FLDSP, m_op }, 337 { "c.lwsp", "d,Cm(Cc)", MATCH_C_LWSP, MASK_C_LWSP, m_op }, 338 { "c.flwsp", "D,Cm(Cc)", MATCH_C_FLWSP, MASK_C_FLWSP, m_op }, 339 { "c.mv", "d,CV", MATCH_C_MV, MASK_C_MV, m_op }, 340 { "c.add", "d,CV", MATCH_C_ADD, MASK_C_ADD, m_op }, 341 { "c.fsdsp", "CT,CN(Cc)", MATCH_C_FSDSP, MASK_C_FSDSP, m_op }, 342 { "c.swsp", "CV,CM(Cc)", MATCH_C_SWSP, MASK_C_SWSP, m_op }, 343 { "c.fswsp", "CT,CM(Cc)", MATCH_C_FSWSP, MASK_C_FSWSP, m_op }, 344 { NULL, NULL, 0, 0, NULL }, 345 }; 346 347 static int 348 oprint(struct riscv_op *op, vm_offset_t loc, int insn) 349 { 350 uint32_t rd, rs1, rs2, rs3; 351 uint32_t val; 352 const char *csr_name; 353 int imm; 354 char *p; 355 356 p = op->fmt; 357 358 rd = (insn & RD_MASK) >> RD_SHIFT; 359 rs1 = (insn & RS1_MASK) >> RS1_SHIFT; 360 rs2 = (insn & RS2_MASK) >> RS2_SHIFT; 361 362 db_printf("%s\t", op->name); 363 364 while (*p) { 365 switch (*p) { 366 case 'C': /* C-Compressed ISA extension */ 367 switch (*++p) { 368 case 't': 369 rd = (insn >> 2) & 0x7; 370 rd += 0x8; 371 db_printf("%s", reg_name[rd]); 372 break; 373 case 's': 374 rs2 = (insn >> 7) & 0x7; 375 rs2 += 0x8; 376 db_printf("%s", reg_name[rs2]); 377 break; 378 case 'l': 379 imm = ((insn >> 10) & 0x7) << 3; 380 imm |= ((insn >> 5) & 0x3) << 6; 381 if (imm & (1 << 8)) 382 imm |= 0xffffff << 8; 383 db_printf("%d", imm); 384 break; 385 case 'k': 386 imm = ((insn >> 10) & 0x7) << 3; 387 imm |= ((insn >> 6) & 0x1) << 2; 388 imm |= ((insn >> 5) & 0x1) << 6; 389 if (imm & (1 << 8)) 390 imm |= 0xffffff << 8; 391 db_printf("%d", imm); 392 break; 393 case 'c': 394 db_printf("sp"); 395 break; 396 case 'n': 397 imm = ((insn >> 5) & 0x3) << 3; 398 imm |= ((insn >> 12) & 0x1) << 5; 399 imm |= ((insn >> 2) & 0x7) << 6; 400 if (imm & (1 << 8)) 401 imm |= 0xffffff << 8; 402 db_printf("%d", imm); 403 break; 404 case 'N': 405 imm = ((insn >> 10) & 0x7) << 3; 406 imm |= ((insn >> 7) & 0x7) << 6; 407 if (imm & (1 << 8)) 408 imm |= 0xffffff << 8; 409 db_printf("%d", imm); 410 break; 411 case 'u': 412 imm = ((insn >> 2) & 0x1f) << 0; 413 imm |= ((insn >> 12) & 0x1) << 5; 414 if (imm & (1 << 5)) 415 imm |= (0x7ffffff << 5); /* sign ext */ 416 db_printf("0x%x", imm); 417 break; 418 case 'o': 419 imm = ((insn >> 2) & 0x1f) << 0; 420 imm |= ((insn >> 12) & 0x1) << 5; 421 if (imm & (1 << 5)) 422 imm |= (0x7ffffff << 5); /* sign ext */ 423 db_printf("%d", imm); 424 break; 425 case 'a': 426 /* imm[11|4|9:8|10|6|7|3:1|5] << 2 */ 427 imm = ((insn >> 3) & 0x7) << 1; 428 imm |= ((insn >> 11) & 0x1) << 4; 429 imm |= ((insn >> 2) & 0x1) << 5; 430 imm |= ((insn >> 7) & 0x1) << 6; 431 imm |= ((insn >> 6) & 0x1) << 7; 432 imm |= ((insn >> 9) & 0x3) << 8; 433 imm |= ((insn >> 8) & 0x1) << 10; 434 imm |= ((insn >> 12) & 0x1) << 11; 435 if (imm & (1 << 11)) 436 imm |= (0xfffff << 12); /* sign ext */ 437 db_printf("0x%lx", (loc + imm)); 438 break; 439 case 'V': 440 rs2 = (insn >> 2) & 0x1f; 441 db_printf("%s", reg_name[rs2]); 442 break; 443 case '>': 444 imm = ((insn >> 2) & 0x1f) << 0; 445 imm |= ((insn >> 12) & 0x1) << 5; 446 db_printf("%d", imm); 447 }; 448 break; 449 case 'd': 450 db_printf("%s", reg_name[rd]); 451 break; 452 case 'D': 453 db_printf("%s", fp_reg_name[rd]); 454 break; 455 case 's': 456 db_printf("%s", reg_name[rs1]); 457 break; 458 case 'S': 459 db_printf("%s", fp_reg_name[rs1]); 460 break; 461 case 't': 462 db_printf("%s", reg_name[rs2]); 463 break; 464 case 'T': 465 db_printf("%s", fp_reg_name[rs2]); 466 break; 467 case 'R': 468 rs3 = (insn >> 27) & 0x1f; 469 db_printf("%s", fp_reg_name[rs3]); 470 break; 471 case 'Z': 472 imm = (insn >> 15) & 0x1f; 473 db_printf("%d", imm); 474 break; 475 case 'p': 476 imm = ((insn >> 8) & 0xf) << 1; 477 imm |= ((insn >> 25) & 0x3f) << 5; 478 imm |= ((insn >> 7) & 0x1) << 11; 479 imm |= ((insn >> 31) & 0x1) << 12; 480 if (imm & (1 << 12)) 481 imm |= (0xfffff << 12); /* sign extend */ 482 db_printf("0x%016lx", (loc + imm)); 483 break; 484 case '(': 485 case ')': 486 case '[': 487 case ']': 488 case ',': 489 db_printf("%c", *p); 490 break; 491 case '0': 492 if (!p[1]) 493 db_printf("%c", *p); 494 break; 495 496 case 'o': 497 imm = (insn >> 20) & 0xfff; 498 if (imm & (1 << 11)) 499 imm |= (0xfffff << 12); /* sign extend */ 500 db_printf("%d", imm); 501 break; 502 case 'q': 503 imm = (insn >> 7) & 0x1f; 504 imm |= ((insn >> 25) & 0x7f) << 5; 505 if (imm & (1 << 11)) 506 imm |= (0xfffff << 12); /* sign extend */ 507 db_printf("%d", imm); 508 break; 509 case 'a': 510 /* imm[20|10:1|11|19:12] << 12 */ 511 imm = ((insn >> 21) & 0x3ff) << 1; 512 imm |= ((insn >> 20) & 0x1) << 11; 513 imm |= ((insn >> 12) & 0xff) << 12; 514 imm |= ((insn >> 31) & 0x1) << 20; 515 if (imm & (1 << 20)) 516 imm |= (0xfff << 20); /* sign extend */ 517 db_printf("0x%lx", (loc + imm)); 518 break; 519 case 'u': 520 /* imm[31:12] << 12 */ 521 imm = (insn >> 12) & 0xfffff; 522 if (imm & (1 << 20)) 523 imm |= (0xfff << 20); /* sign extend */ 524 db_printf("0x%x", imm); 525 break; 526 case 'j': 527 /* imm[11:0] << 20 */ 528 imm = (insn >> 20) & 0xfff; 529 if (imm & (1 << 11)) 530 imm |= (0xfffff << 12); /* sign extend */ 531 db_printf("%d", imm); 532 break; 533 case '>': 534 val = (insn >> 20) & 0x3f; 535 db_printf("0x%x", val); 536 break; 537 case '<': 538 val = (insn >> 20) & 0x1f; 539 db_printf("0x%x", val); 540 break; 541 case 'E': 542 val = (insn >> 20) & 0xfff; 543 csr_name = NULL; 544 switch (val) { 545 #define DECLARE_CSR(name, num) case num: csr_name = #name; break; 546 #include "machine/encoding.h" 547 #undef DECLARE_CSR 548 } 549 if (csr_name) 550 db_printf("%s", csr_name); 551 else 552 db_printf("0x%x", val); 553 break; 554 case 'P': 555 if (insn & (1 << 27)) db_printf("i"); 556 if (insn & (1 << 26)) db_printf("o"); 557 if (insn & (1 << 25)) db_printf("r"); 558 if (insn & (1 << 24)) db_printf("w"); 559 break; 560 case 'Q': 561 if (insn & (1 << 23)) db_printf("i"); 562 if (insn & (1 << 22)) db_printf("o"); 563 if (insn & (1 << 21)) db_printf("r"); 564 if (insn & (1 << 20)) db_printf("w"); 565 break; 566 } 567 568 p++; 569 } 570 571 return (0); 572 } 573 574 vm_offset_t 575 db_disasm(vm_offset_t loc, bool altfmt) 576 { 577 struct riscv_op *op; 578 uint32_t insn; 579 int j; 580 581 insn = db_get_value(loc, 4, 0); 582 for (j = 0; riscv_opcodes[j].name != NULL; j++) { 583 op = &riscv_opcodes[j]; 584 if (op->match_func(op, insn)) { 585 oprint(op, loc, insn); 586 return(loc + 4); 587 } 588 }; 589 590 insn = db_get_value(loc, 2, 0); 591 for (j = 0; riscv_c_opcodes[j].name != NULL; j++) { 592 op = &riscv_c_opcodes[j]; 593 if (op->match_func(op, insn)) { 594 oprint(op, loc, insn); 595 break; 596 } 597 }; 598 599 return(loc + 2); 600 } 601