spike_main/disasm.cc

   1 // See LICENSE for license details.
   2
   3 #include "disasm.h"
   4 #include <string>
   5 #include <vector>
   6 #include <cstdarg>
   7 #include <sstream>
   8 #include <stdlib.h>
   9
  10 struct : public arg_t {
  11   std::string to_string(insn_t insn) const {
  12     return std::to_string((int)insn.i_imm()) + '(' + xpr_name[insn.rs1()] + ')';
  13   }
  14 } load_address;
  15
  16 struct : public arg_t {
  17   std::string to_string(insn_t insn) const {
  18     return std::to_string((int)insn.s_imm()) + '(' + xpr_name[insn.rs1()] + ')';
  19   }
  20 } store_address;
  21
  22 struct : public arg_t {
  23   std::string to_string(insn_t insn) const {
  24     return std::string("(") + xpr_name[insn.rs1()] + ')';
  25   }
  26 } amo_address;
  27
  28 struct : public arg_t {
  29   std::string to_string(insn_t insn) const {
  30     return xpr_name[insn.rd()];
  31   }
  32 } xrd;
  33
  34 struct : public arg_t {
  35   std::string to_string(insn_t insn) const {
  36     return xpr_name[insn.rs1()];
  37   }
  38 } xrs1;
  39
  40 struct : public arg_t {
  41   std::string to_string(insn_t insn) const {
  42     return xpr_name[insn.rs2()];
  43   }
  44 } xrs2;
  45
  46 struct : public arg_t {
  47   std::string to_string(insn_t insn) const {
  48     return fpr_name[insn.rd()];
  49   }
  50 } frd;
  51
  52 struct : public arg_t {
  53   std::string to_string(insn_t insn) const {
  54     return fpr_name[insn.rs1()];
  55   }
  56 } frs1;
  57
  58 struct : public arg_t {
  59   std::string to_string(insn_t insn) const {
  60     return fpr_name[insn.rs2()];
  61   }
  62 } frs2;
  63
  64 struct : public arg_t {
  65   std::string to_string(insn_t insn) const {
  66     return fpr_name[insn.rs3()];
  67   }
  68 } frs3;
  69
  70 struct : public arg_t {
  71   std::string to_string(insn_t insn) const {
  72     switch (insn.csr())
  73     {
  74       #define DECLARE_CSR(name, num) case num: return #name;
  75       #include "encoding.h"
  76       #undef DECLARE_CSR
  77       default:
  78       {
  79         char buf[16];
  80         snprintf(buf, sizeof buf, "unknown_%03" PRIx64, insn.csr());
  81         return std::string(buf);
  82       }
  83     }
  84   }
  85 } csr;
  86
  87 struct : public arg_t {
  88   std::string to_string(insn_t insn) const {
  89     return std::to_string((int)insn.i_imm());
  90   }
  91 } imm;
  92
  93 struct : public arg_t {
  94   std::string to_string(insn_t insn) const {
  95     std::stringstream s;
  96     s << std::hex << "0x" << ((uint32_t)insn.u_imm() >> 12);
  97     return s.str();
  98   }
  99 } bigimm;
 100
 101 struct : public arg_t {
 102   std::string to_string(insn_t insn) const {
 103     return std::to_string(insn.rs1());
 104   }
 105 } zimm5;
 106
 107 struct : public arg_t {
 108   std::string to_string(insn_t insn) const {
 109     std::stringstream s;
 110     int32_t target = insn.sb_imm();
 111     char sign = target >= 0 ? '+' : '-';
 112     s << "pc " << sign << ' ' << abs(target);
 113     return s.str();
 114   }
 115 } branch_target;
 116
 117 struct : public arg_t {
 118   std::string to_string(insn_t insn) const {
 119     std::stringstream s;
 120     int32_t target = insn.uj_imm();
 121     char sign = target >= 0 ? '+' : '-';
 122     s << "pc " << sign << std::hex << " 0x" << abs(target);
 123     return s.str();
 124   }
 125 } jump_target;
 126
 127 struct : public arg_t {
 128   std::string to_string(insn_t insn) const {
 129     return xpr_name[insn.rvc_rs1()];
 130   }
 131 } rvc_rs1;
 132
 133 struct : public arg_t {
 134   std::string to_string(insn_t insn) const {
 135     return xpr_name[insn.rvc_rs2()];
 136   }
 137 } rvc_rs2;
 138
 139 struct : public arg_t {
 140   std::string to_string(insn_t insn) const {
 141     return xpr_name[insn.rvc_rs1s()];
 142   }
 143 } rvc_rs1s;
 144
 145 struct : public arg_t {
 146   std::string to_string(insn_t insn) const {
 147     return xpr_name[insn.rvc_rs2s()];
 148   }
 149 } rvc_rs2s;
 150
 151 struct : public arg_t {
 152   std::string to_string(insn_t insn) const {
 153     return xpr_name[X_SP];
 154   }
 155 } rvc_sp;
 156
 157 struct : public arg_t {
 158   std::string to_string(insn_t insn) const {
 159     return std::to_string((int)insn.rvc_imm());
 160   }
 161 } rvc_imm;
 162
 163 struct : public arg_t {
 164   std::string to_string(insn_t insn) const {
 165     return std::to_string((int)insn.rvc_addi4spn_imm());
 166   }
 167 } rvc_addi4spn_imm;
 168
 169 struct : public arg_t {
 170   std::string to_string(insn_t insn) const {
 171     return std::to_string((int)insn.rvc_addi16sp_imm());
 172   }
 173 } rvc_addi16sp_imm;
 174
 175 struct : public arg_t {
 176   std::string to_string(insn_t insn) const {
 177     return std::to_string((int)insn.rvc_lwsp_imm());
 178   }
 179 } rvc_lwsp_imm;
 180
 181 struct : public arg_t {
 182   std::string to_string(insn_t insn) const {
 183     return std::to_string((int)(insn.rvc_imm() & 0x3f));
 184   }
 185 } rvc_shamt;
 186
 187 struct : public arg_t {
 188   std::string to_string(insn_t insn) const {
 189     std::stringstream s;
 190     s << std::hex << "0x" << (uint32_t)insn.rvc_imm();
 191     return s.str();
 192   }
 193 } rvc_uimm;
 194
 195 struct : public arg_t {
 196   std::string to_string(insn_t insn) const {
 197     return std::to_string((int)insn.rvc_lwsp_imm()) + '(' + xpr_name[X_SP] + ')';
 198   }
 199 } rvc_lwsp_address;
 200
 201 struct : public arg_t {
 202   std::string to_string(insn_t insn) const {
 203     return std::to_string((int)insn.rvc_ldsp_imm()) + '(' + xpr_name[X_SP] + ')';
 204   }
 205 } rvc_ldsp_address;
 206
 207 struct : public arg_t {
 208   std::string to_string(insn_t insn) const {
 209     return std::to_string((int)insn.rvc_swsp_imm()) + '(' + xpr_name[X_SP] + ')';
 210   }
 211 } rvc_swsp_address;
 212
 213 struct : public arg_t {
 214   std::string to_string(insn_t insn) const {
 215     return std::to_string((int)insn.rvc_sdsp_imm()) + '(' + xpr_name[X_SP] + ')';
 216   }
 217 } rvc_sdsp_address;
 218
 219 struct : public arg_t {
 220   std::string to_string(insn_t insn) const {
 221     return std::to_string((int)insn.rvc_lw_imm()) + '(' + xpr_name[insn.rvc_rs1s()] + ')';
 222   }
 223 } rvc_lw_address;
 224
 225 struct : public arg_t {
 226   std::string to_string(insn_t insn) const {
 227     return std::to_string((int)insn.rvc_ld_imm()) + '(' + xpr_name[insn.rvc_rs1s()] + ')';
 228   }
 229 } rvc_ld_address;
 230
 231 struct : public arg_t {
 232   std::string to_string(insn_t insn) const {
 233     std::stringstream s;
 234     int32_t target = insn.rvc_b_imm();
 235     char sign = target >= 0 ? '+' : '-';
 236     s << "pc " << sign << ' ' << abs(target);
 237     return s.str();
 238   }
 239 } rvc_branch_target;
 240
 241 struct : public arg_t {
 242   std::string to_string(insn_t insn) const {
 243     std::stringstream s;
 244     int32_t target = insn.rvc_j_imm();
 245     char sign = target >= 0 ? '+' : '-';
 246     s << "pc " << sign << ' ' << abs(target);
 247     return s.str();
 248   }
 249 } rvc_jump_target;
 250
 251 std::string disassembler_t::disassemble(insn_t insn) const
 252 {
 253   const disasm_insn_t* disasm_insn = lookup(insn);
 254   return disasm_insn ? disasm_insn->to_string(insn) : "unknown";
 255 }
 256
 257 disassembler_t::disassembler_t(int xlen)
 258 {
 259   const uint32_t mask_rd = 0x1fUL << 7;
 260   const uint32_t match_rd_ra = 1UL << 7;
 261   const uint32_t mask_rs1 = 0x1fUL << 15;
 262   const uint32_t match_rs1_ra = 1UL << 15;
 263   const uint32_t mask_rs2 = 0x1fUL << 20;
 264   const uint32_t mask_imm = 0xfffUL << 20;
 265   const uint32_t match_imm_1 = 1UL << 20;
 266   const uint32_t mask_rvc_rs2 = 0x1fUL << 2;
 267   const uint32_t mask_rvc_imm = mask_rvc_rs2 | 0x1000UL;
 268
 269   #define DECLARE_INSN(code, match, mask) \
 270    const uint32_t match_##code = match; \
 271    const uint32_t mask_##code = mask;
 272   #include "encoding.h"
 273   #undef DECLARE_INSN
 274
 275   // explicit per-instruction disassembly
 276   #define DISASM_INSN(name, code, extra, ...) \
 277     add_insn(new disasm_insn_t(name, match_##code, mask_##code | (extra), __VA_ARGS__));
 278   #define DEFINE_NOARG(code) \
 279     add_insn(new disasm_insn_t(#code, match_##code, mask_##code, {}));
 280   #define DEFINE_RTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &xrs2})
 281   #define DEFINE_ITYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &imm})
 282   #define DEFINE_I0TYPE(name, code) DISASM_INSN(name, code, mask_rs1, {&xrd, &imm})
 283   #define DEFINE_I1TYPE(name, code) DISASM_INSN(name, code, mask_imm, {&xrd, &xrs1})
 284   #define DEFINE_I2TYPE(name, code) DISASM_INSN(name, code, mask_rd | mask_imm, {&xrs1})
 285   #define DEFINE_LTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &bigimm})
 286   #define DEFINE_BTYPE(code) DISASM_INSN(#code, code, 0, {&xrs1, &xrs2, &branch_target})
 287   #define DEFINE_B0TYPE(name, code) DISASM_INSN(name, code, mask_rs1 | mask_rs2, {&branch_target})
 288   #define DEFINE_B1TYPE(name, code) DISASM_INSN(name, code, mask_rs2, {&xrs1, &branch_target})
 289   #define DEFINE_XLOAD(code) DISASM_INSN(#code, code, 0, {&xrd, &load_address})
 290   #define DEFINE_XSTORE(code) DISASM_INSN(#code, code, 0, {&xrs2, &store_address})
 291   #define DEFINE_XAMO(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs2, &amo_address})
 292   #define DEFINE_FLOAD(code) DISASM_INSN(#code, code, 0, {&frd, &load_address})
 293   #define DEFINE_FSTORE(code) DISASM_INSN(#code, code, 0, {&frs2, &store_address})
 294   #define DEFINE_FRTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2})
 295   #define DEFINE_FR1TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1})
 296   #define DEFINE_FR3TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2, &frs3})
 297   #define DEFINE_FXTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &frs1})
 298   #define DEFINE_XFTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &xrs1})
 299
 300   DEFINE_XLOAD(lb)
 301   DEFINE_XLOAD(lbu)
 302   DEFINE_XLOAD(lh)
 303   DEFINE_XLOAD(lhu)
 304   DEFINE_XLOAD(lw)
 305   DEFINE_XLOAD(lwu)
 306   DEFINE_XLOAD(ld)
 307
 308   DEFINE_XSTORE(sb)
 309   DEFINE_XSTORE(sh)
 310   DEFINE_XSTORE(sw)
 311   DEFINE_XSTORE(sd)
 312
 313   DEFINE_XAMO(amoadd_w)
 314   DEFINE_XAMO(amoswap_w)
 315   DEFINE_XAMO(amoand_w)
 316   DEFINE_XAMO(amoor_w)
 317   DEFINE_XAMO(amoxor_w)
 318   DEFINE_XAMO(amomin_w)
 319   DEFINE_XAMO(amomax_w)
 320   DEFINE_XAMO(amominu_w)
 321   DEFINE_XAMO(amomaxu_w)
 322   DEFINE_XAMO(amoadd_d)
 323   DEFINE_XAMO(amoswap_d)
 324   DEFINE_XAMO(amoand_d)
 325   DEFINE_XAMO(amoor_d)
 326   DEFINE_XAMO(amoxor_d)
 327   DEFINE_XAMO(amomin_d)
 328   DEFINE_XAMO(amomax_d)
 329   DEFINE_XAMO(amominu_d)
 330   DEFINE_XAMO(amomaxu_d)
 331
 332   DEFINE_XAMO(lr_w)
 333   DEFINE_XAMO(sc_w)
 334   DEFINE_XAMO(lr_d)
 335   DEFINE_XAMO(sc_d)
 336
 337   DEFINE_FLOAD(flw)
 338   DEFINE_FLOAD(fld)
 339   DEFINE_FLOAD(flq)
 340
 341   DEFINE_FSTORE(fsw)
 342   DEFINE_FSTORE(fsd)
 343   DEFINE_FSTORE(fsq)
 344
 345   add_insn(new disasm_insn_t("j", match_jal, mask_jal | mask_rd, {&jump_target}));
 346   add_insn(new disasm_insn_t("jal", match_jal | match_rd_ra, mask_jal | mask_rd, {&jump_target}));
 347   add_insn(new disasm_insn_t("jal", match_jal, mask_jal, {&xrd, &jump_target}));
 348
 349   DEFINE_B1TYPE("beqz", beq);
 350   DEFINE_B1TYPE("bnez", bne);
 351   DEFINE_B1TYPE("bltz", blt);
 352   DEFINE_B1TYPE("bgez", bge);
 353   DEFINE_BTYPE(beq)
 354   DEFINE_BTYPE(bne)
 355   DEFINE_BTYPE(blt)
 356   DEFINE_BTYPE(bge)
 357   DEFINE_BTYPE(bltu)
 358   DEFINE_BTYPE(bgeu)
 359
 360   DEFINE_LTYPE(lui);
 361   DEFINE_LTYPE(auipc);
 362
 363   add_insn(new disasm_insn_t("ret", match_jalr | match_rs1_ra, mask_jalr | mask_rd | mask_rs1 | mask_imm, {}));
 364   DEFINE_I2TYPE("jr", jalr);
 365   add_insn(new disasm_insn_t("jalr", match_jalr | match_rd_ra, mask_jalr | mask_rd | mask_imm, {&xrs1}));
 366   DEFINE_ITYPE(jalr);
 367
 368   add_insn(new disasm_insn_t("nop", match_addi, mask_addi | mask_rd | mask_rs1 | mask_imm, {}));
 369   add_insn(new disasm_insn_t(" - ", match_xor, mask_xor | mask_rd | mask_rs1 | mask_rs2, {})); // for machine-generated bubbles
 370   DEFINE_I0TYPE("li", addi);
 371   DEFINE_I1TYPE("mv", addi);
 372   DEFINE_ITYPE(addi);
 373   DEFINE_ITYPE(slli);
 374   DEFINE_ITYPE(slti);
 375   add_insn(new disasm_insn_t("seqz", match_sltiu | match_imm_1, mask_sltiu | mask_imm, {&xrd, &xrs1}));
 376   DEFINE_ITYPE(sltiu);
 377   add_insn(new disasm_insn_t("not", match_xori | mask_imm, mask_xori | mask_imm, {&xrd, &xrs1}));
 378   DEFINE_ITYPE(xori);
 379   DEFINE_ITYPE(srli);
 380   DEFINE_ITYPE(srai);
 381   DEFINE_ITYPE(ori);
 382   DEFINE_ITYPE(andi);
 383   DEFINE_I1TYPE("sext.w", addiw);
 384   DEFINE_ITYPE(addiw);
 385   DEFINE_ITYPE(slliw);
 386   DEFINE_ITYPE(srliw);
 387   DEFINE_ITYPE(sraiw);
 388
 389   DEFINE_RTYPE(add);
 390   DEFINE_RTYPE(sub);
 391   DEFINE_RTYPE(sll);
 392   DEFINE_RTYPE(slt);
 393   add_insn(new disasm_insn_t("snez", match_sltu, mask_sltu | mask_rs1, {&xrd, &xrs2}));
 394   DEFINE_RTYPE(sltu);
 395   DEFINE_RTYPE(xor);
 396   DEFINE_RTYPE(srl);
 397   DEFINE_RTYPE(sra);
 398   DEFINE_RTYPE(or);
 399   DEFINE_RTYPE(and);
 400   DEFINE_RTYPE(mul);
 401   DEFINE_RTYPE(mulh);
 402   DEFINE_RTYPE(mulhu);
 403   DEFINE_RTYPE(mulhsu);
 404   DEFINE_RTYPE(div);
 405   DEFINE_RTYPE(divu);
 406   DEFINE_RTYPE(rem);
 407   DEFINE_RTYPE(remu);
 408   DEFINE_RTYPE(addw);
 409   DEFINE_RTYPE(subw);
 410   DEFINE_RTYPE(sllw);
 411   DEFINE_RTYPE(srlw);
 412   DEFINE_RTYPE(sraw);
 413   DEFINE_RTYPE(mulw);
 414   DEFINE_RTYPE(divw);
 415   DEFINE_RTYPE(divuw);
 416   DEFINE_RTYPE(remw);
 417   DEFINE_RTYPE(remuw);
 418
 419   DEFINE_NOARG(ecall);
 420   DEFINE_NOARG(ebreak);
 421   DEFINE_NOARG(uret);
 422   DEFINE_NOARG(sret);
 423   DEFINE_NOARG(mret);
 424   DEFINE_NOARG(fence);
 425   DEFINE_NOARG(fence_i);
 426
 427   add_insn(new disasm_insn_t("csrr", match_csrrs, mask_csrrs | mask_rs1, {&xrd, &csr}));
 428   add_insn(new disasm_insn_t("csrw", match_csrrw, mask_csrrw | mask_rd, {&csr, &xrs1}));
 429   add_insn(new disasm_insn_t("csrs", match_csrrs, mask_csrrs | mask_rd, {&csr, &xrs1}));
 430   add_insn(new disasm_insn_t("csrc", match_csrrc, mask_csrrc | mask_rd, {&csr, &xrs1}));
 431   add_insn(new disasm_insn_t("csrwi", match_csrrwi, mask_csrrwi | mask_rd, {&csr, &zimm5}));
 432   add_insn(new disasm_insn_t("csrsi", match_csrrsi, mask_csrrsi | mask_rd, {&csr, &zimm5}));
 433   add_insn(new disasm_insn_t("csrci", match_csrrci, mask_csrrci | mask_rd, {&csr, &zimm5}));
 434   add_insn(new disasm_insn_t("csrrw", match_csrrw, mask_csrrw, {&xrd, &csr, &xrs1}));
 435   add_insn(new disasm_insn_t("csrrs", match_csrrs, mask_csrrs, {&xrd, &csr, &xrs1}));
 436   add_insn(new disasm_insn_t("csrrc", match_csrrc, mask_csrrc, {&xrd, &csr, &xrs1}));
 437   add_insn(new disasm_insn_t("csrrwi", match_csrrwi, mask_csrrwi, {&xrd, &csr, &zimm5}));
 438   add_insn(new disasm_insn_t("csrrsi", match_csrrsi, mask_csrrsi, {&xrd, &csr, &zimm5}));
 439   add_insn(new disasm_insn_t("csrrci", match_csrrci, mask_csrrci, {&xrd, &csr, &zimm5}));
 440
 441   DEFINE_FRTYPE(fadd_s);
 442   DEFINE_FRTYPE(fsub_s);
 443   DEFINE_FRTYPE(fmul_s);
 444   DEFINE_FRTYPE(fdiv_s);
 445   DEFINE_FR1TYPE(fsqrt_s);
 446   DEFINE_FRTYPE(fmin_s);
 447   DEFINE_FRTYPE(fmax_s);
 448   DEFINE_FR3TYPE(fmadd_s);
 449   DEFINE_FR3TYPE(fmsub_s);
 450   DEFINE_FR3TYPE(fnmadd_s);
 451   DEFINE_FR3TYPE(fnmsub_s);
 452   DEFINE_FRTYPE(fsgnj_s);
 453   DEFINE_FRTYPE(fsgnjn_s);
 454   DEFINE_FRTYPE(fsgnjx_s);
 455   DEFINE_FR1TYPE(fcvt_s_d);
 456   DEFINE_FR1TYPE(fcvt_s_q);
 457   DEFINE_XFTYPE(fcvt_s_l);
 458   DEFINE_XFTYPE(fcvt_s_lu);
 459   DEFINE_XFTYPE(fcvt_s_w);
 460   DEFINE_XFTYPE(fcvt_s_wu);
 461   DEFINE_XFTYPE(fcvt_s_wu);
 462   DEFINE_XFTYPE(fmv_w_x);
 463   DEFINE_FXTYPE(fcvt_l_s);
 464   DEFINE_FXTYPE(fcvt_lu_s);
 465   DEFINE_FXTYPE(fcvt_w_s);
 466   DEFINE_FXTYPE(fcvt_wu_s);
 467   DEFINE_FXTYPE(fclass_s);
 468   DEFINE_FXTYPE(fmv_x_w);
 469   DEFINE_FXTYPE(feq_s);
 470   DEFINE_FXTYPE(flt_s);
 471   DEFINE_FXTYPE(fle_s);
 472
 473   DEFINE_FRTYPE(fadd_d);
 474   DEFINE_FRTYPE(fsub_d);
 475   DEFINE_FRTYPE(fmul_d);
 476   DEFINE_FRTYPE(fdiv_d);
 477   DEFINE_FR1TYPE(fsqrt_d);
 478   DEFINE_FRTYPE(fmin_d);
 479   DEFINE_FRTYPE(fmax_d);
 480   DEFINE_FR3TYPE(fmadd_d);
 481   DEFINE_FR3TYPE(fmsub_d);
 482   DEFINE_FR3TYPE(fnmadd_d);
 483   DEFINE_FR3TYPE(fnmsub_d);
 484   DEFINE_FRTYPE(fsgnj_d);
 485   DEFINE_FRTYPE(fsgnjn_d);
 486   DEFINE_FRTYPE(fsgnjx_d);
 487   DEFINE_FR1TYPE(fcvt_d_s);
 488   DEFINE_FR1TYPE(fcvt_d_q);
 489   DEFINE_XFTYPE(fcvt_d_l);
 490   DEFINE_XFTYPE(fcvt_d_lu);
 491   DEFINE_XFTYPE(fcvt_d_w);
 492   DEFINE_XFTYPE(fcvt_d_wu);
 493   DEFINE_XFTYPE(fcvt_d_wu);
 494   DEFINE_XFTYPE(fmv_d_x);
 495   DEFINE_FXTYPE(fcvt_l_d);
 496   DEFINE_FXTYPE(fcvt_lu_d);
 497   DEFINE_FXTYPE(fcvt_w_d);
 498   DEFINE_FXTYPE(fcvt_wu_d);
 499   DEFINE_FXTYPE(fclass_d);
 500   DEFINE_FXTYPE(fmv_x_d);
 501   DEFINE_FXTYPE(feq_d);
 502   DEFINE_FXTYPE(flt_d);
 503   DEFINE_FXTYPE(fle_d);
 504
 505   DEFINE_FRTYPE(fadd_q);
 506   DEFINE_FRTYPE(fsub_q);
 507   DEFINE_FRTYPE(fmul_q);
 508   DEFINE_FRTYPE(fdiv_q);
 509   DEFINE_FR1TYPE(fsqrt_q);
 510   DEFINE_FRTYPE(fmin_q);
 511   DEFINE_FRTYPE(fmax_q);
 512   DEFINE_FR3TYPE(fmadd_q);
 513   DEFINE_FR3TYPE(fmsub_q);
 514   DEFINE_FR3TYPE(fnmadd_q);
 515   DEFINE_FR3TYPE(fnmsub_q);
 516   DEFINE_FRTYPE(fsgnj_q);
 517   DEFINE_FRTYPE(fsgnjn_q);
 518   DEFINE_FRTYPE(fsgnjx_q);
 519   DEFINE_FR1TYPE(fcvt_q_s);
 520   DEFINE_FR1TYPE(fcvt_q_d);
 521   DEFINE_XFTYPE(fcvt_q_l);
 522   DEFINE_XFTYPE(fcvt_q_lu);
 523   DEFINE_XFTYPE(fcvt_q_w);
 524   DEFINE_XFTYPE(fcvt_q_wu);
 525   DEFINE_XFTYPE(fcvt_q_wu);
 526   DEFINE_XFTYPE(fmv_q_x);
 527   DEFINE_FXTYPE(fcvt_l_q);
 528   DEFINE_FXTYPE(fcvt_lu_q);
 529   DEFINE_FXTYPE(fcvt_w_q);
 530   DEFINE_FXTYPE(fcvt_wu_q);
 531   DEFINE_FXTYPE(fclass_q);
 532   DEFINE_FXTYPE(fmv_x_q);
 533   DEFINE_FXTYPE(feq_q);
 534   DEFINE_FXTYPE(flt_q);
 535   DEFINE_FXTYPE(fle_q);
 536
 537   DISASM_INSN("ebreak", c_add, mask_rd | mask_rvc_rs2, {});
 538   add_insn(new disasm_insn_t("ret", match_c_jr | match_rd_ra, mask_c_jr | mask_rd | mask_rvc_imm, {}));
 539   DISASM_INSN("jr", c_jr, mask_rvc_imm, {&rvc_rs1});
 540   DISASM_INSN("jalr", c_jalr, mask_rvc_imm, {&rvc_rs1});
 541   DISASM_INSN("nop", c_addi, mask_rd | mask_rvc_imm, {});
 542   DISASM_INSN("addi", c_addi16sp, mask_rd, {&rvc_sp, &rvc_sp, &rvc_addi16sp_imm});
 543   DISASM_INSN("addi", c_addi4spn, 0, {&rvc_rs1s, &rvc_sp, &rvc_addi4spn_imm});
 544   DISASM_INSN("li", c_li, 0, {&xrd, &rvc_imm});
 545   DISASM_INSN("lui", c_lui, 0, {&xrd, &rvc_uimm});
 546   DISASM_INSN("addi", c_addi, 0, {&xrd, &xrd, &rvc_imm});
 547   DISASM_INSN("slli", c_slli, 0, {&xrd, &rvc_shamt});
 548   DISASM_INSN("mv", c_mv, 0, {&xrd, &rvc_rs2});
 549   DISASM_INSN("add", c_add, 0, {&xrd, &xrd, &rvc_rs2});
 550   DISASM_INSN("addw", c_addw, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 551   DISASM_INSN("sub", c_sub, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 552   DISASM_INSN("subw", c_subw, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 553   DISASM_INSN("and", c_and, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 554   DISASM_INSN("or", c_or, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 555   DISASM_INSN("xor", c_xor, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
 556   DISASM_INSN("lw", c_lwsp, 0, {&xrd, &rvc_lwsp_address});
 557   DISASM_INSN("fld", c_fld, 0, {&rvc_rs2s, &rvc_ld_address});
 558   DISASM_INSN("sw", c_swsp, 0, {&rvc_rs2, &rvc_swsp_address});
 559   DISASM_INSN("lw", c_lw, 0, {&rvc_rs2s, &rvc_lw_address});
 560   DISASM_INSN("sw", c_sw, 0, {&rvc_rs2s, &rvc_lw_address});
 561   DISASM_INSN("beqz", c_beqz, 0, {&rvc_rs1s, &rvc_branch_target});
 562   DISASM_INSN("bnez", c_bnez, 0, {&rvc_rs1s, &rvc_branch_target});
 563   DISASM_INSN("j", c_j, 0, {&rvc_jump_target});
 564
 565   if (xlen == 32) {
 566     DISASM_INSN("flw", c_flw, 0, {&rvc_rs2s, &rvc_lw_address});
 567     DISASM_INSN("flw", c_flwsp, 0, {&xrd, &rvc_lwsp_address});
 568     DISASM_INSN("fsw", c_fsw, 0, {&rvc_rs2s, &rvc_lw_address});
 569     DISASM_INSN("fsw", c_fswsp, 0, {&rvc_rs2, &rvc_swsp_address});
 570     DISASM_INSN("jal", c_jal, 0, {&rvc_jump_target});
 571   } else {
 572     DISASM_INSN("ld", c_ld, 0, {&rvc_rs2s, &rvc_ld_address});
 573     DISASM_INSN("ld", c_ldsp, 0, {&xrd, &rvc_ldsp_address});
 574     DISASM_INSN("sd", c_sd, 0, {&rvc_rs2s, &rvc_ld_address});
 575     DISASM_INSN("sd", c_sdsp, 0, {&rvc_rs2, &rvc_sdsp_address});
 576     DISASM_INSN("addiw", c_addiw, 0, {&xrd, &xrd, &rvc_imm});
 577   }
 578
 579   // provide a default disassembly for all instructions as a fallback
 580   #define DECLARE_INSN(code, match, mask) \
 581    add_insn(new disasm_insn_t(#code " (args unknown)", match, mask, {}));
 582   #include "encoding.h"
 583   #undef DECLARE_INSN
 584 }
 585
 586 const disasm_insn_t* disassembler_t::lookup(insn_t insn) const
 587 {
 588   size_t idx = insn.bits() % HASH_SIZE;
 589   for (size_t j = 0; j < chain[idx].size(); j++)
 590     if(*chain[idx][j] == insn)
 591       return chain[idx][j];
 592
 593   idx = HASH_SIZE;
 594   for (size_t j = 0; j < chain[idx].size(); j++)
 595     if(*chain[idx][j] == insn)
 596       return chain[idx][j];
 597
 598   return NULL;
 599 }
 600
 601 void disassembler_t::add_insn(disasm_insn_t* insn)
 602 {
 603   size_t idx = HASH_SIZE;
 604   if (insn->get_mask() % HASH_SIZE == HASH_SIZE - 1)
 605     idx = insn->get_match() % HASH_SIZE;
 606   chain[idx].push_back(insn);
 607 }
 608
 609 disassembler_t::~disassembler_t()
 610 {
 611   for (size_t i = 0; i < HASH_SIZE+1; i++)
 612     for (size_t j = 0; j < chain[i].size(); j++)
 613       delete chain[i][j];
 614 }