target/riscv/cpu.c

   1 /*
   2  * QEMU RISC-V CPU
   3  *
   4  * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
   5  * Copyright (c) 2017-2018 SiFive, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms and conditions of the GNU General Public License,
   9  * version 2 or later, as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "qemu/osdep.h"
  21 #include "qemu/qemu-print.h"
  22 #include "qemu/ctype.h"
  23 #include "qemu/log.h"
  24 #include "cpu.h"
  25 #include "exec/exec-all.h"
  26 #include "qapi/error.h"
  27 #include "qemu/error-report.h"
  28 #include "hw/qdev-properties.h"
  29 #include "migration/vmstate.h"
  30 #include "fpu/softfloat-helpers.h"
  31
  32 /* RISC-V CPU definitions */
  33
  34 static const char riscv_exts[26] = "IEMAFDQCLBJTPVNSUHKORWXYZG";
  35
  36 const char * const riscv_int_regnames[] = {
  37   "x0/zero", "x1/ra",  "x2/sp",  "x3/gp",  "x4/tp",  "x5/t0",   "x6/t1",
  38   "x7/t2",   "x8/s0",  "x9/s1",  "x10/a0", "x11/a1", "x12/a2",  "x13/a3",
  39   "x14/a4",  "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3",  "x20/s4",
  40   "x21/s5",  "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11",
  41   "x28/t3",  "x29/t4", "x30/t5", "x31/t6"
  42 };
  43
  44 const char * const riscv_fpr_regnames[] = {
  45   "f0/ft0",   "f1/ft1",  "f2/ft2",   "f3/ft3",   "f4/ft4",  "f5/ft5",
  46   "f6/ft6",   "f7/ft7",  "f8/fs0",   "f9/fs1",   "f10/fa0", "f11/fa1",
  47   "f12/fa2",  "f13/fa3", "f14/fa4",  "f15/fa5",  "f16/fa6", "f17/fa7",
  48   "f18/fs2",  "f19/fs3", "f20/fs4",  "f21/fs5",  "f22/fs6", "f23/fs7",
  49   "f24/fs8",  "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9",
  50   "f30/ft10", "f31/ft11"
  51 };
  52
  53 const char * const riscv_excp_names[] = {
  54     "misaligned_fetch",
  55     "fault_fetch",
  56     "illegal_instruction",
  57     "breakpoint",
  58     "misaligned_load",
  59     "fault_load",
  60     "misaligned_store",
  61     "fault_store",
  62     "user_ecall",
  63     "supervisor_ecall",
  64     "hypervisor_ecall",
  65     "machine_ecall",
  66     "exec_page_fault",
  67     "load_page_fault",
  68     "reserved",
  69     "store_page_fault",
  70     "reserved",
  71     "reserved",
  72     "reserved",
  73     "reserved",
  74     "guest_exec_page_fault",
  75     "guest_load_page_fault",
  76     "reserved",
  77     "guest_store_page_fault",
  78 };
  79
  80 const char * const riscv_intr_names[] = {
  81     "u_software",
  82     "s_software",
  83     "vs_software",
  84     "m_software",
  85     "u_timer",
  86     "s_timer",
  87     "vs_timer",
  88     "m_timer",
  89     "u_external",
  90     "vs_external",
  91     "h_external",
  92     "m_external",
  93     "reserved",
  94     "reserved",
  95     "reserved",
  96     "reserved"
  97 };
  98
  99 static void set_misa(CPURISCVState *env, target_ulong misa)
 100 {
 101     env->misa_mask = env->misa = misa;
 102 }
 103
 104 static void set_priv_version(CPURISCVState *env, int priv_ver)
 105 {
 106     env->priv_ver = priv_ver;
 107 }
 108
 109 static void set_feature(CPURISCVState *env, int feature)
 110 {
 111     env->features |= (1ULL << feature);
 112 }
 113
 114 static void set_resetvec(CPURISCVState *env, int resetvec)
 115 {
 116 #ifndef CONFIG_USER_ONLY
 117     env->resetvec = resetvec;
 118 #endif
 119 }
 120
 121 static void riscv_any_cpu_init(Object *obj)
 122 {
 123     CPURISCVState *env = &RISCV_CPU(obj)->env;
 124     set_misa(env, RVXLEN | RVI | RVM | RVA | RVF | RVD | RVC | RVU);
 125     set_priv_version(env, PRIV_VERSION_1_11_0);
 126     set_resetvec(env, DEFAULT_RSTVEC);
 127 }
 128
 129 #if defined(TARGET_RISCV32)
 130
 131 static void riscv_base32_cpu_init(Object *obj)
 132 {
 133     CPURISCVState *env = &RISCV_CPU(obj)->env;
 134     /* We set this in the realise function */
 135     set_misa(env, 0);
 136 }
 137
 138 static void rv32gcsu_priv1_09_1_cpu_init(Object *obj)
 139 {
 140     CPURISCVState *env = &RISCV_CPU(obj)->env;
 141     set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
 142     set_priv_version(env, PRIV_VERSION_1_09_1);
 143     set_resetvec(env, DEFAULT_RSTVEC);
 144     set_feature(env, RISCV_FEATURE_MMU);
 145     set_feature(env, RISCV_FEATURE_PMP);
 146 }
 147
 148 static void rv32gcsu_priv1_10_0_cpu_init(Object *obj)
 149 {
 150     CPURISCVState *env = &RISCV_CPU(obj)->env;
 151     set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
 152     set_priv_version(env, PRIV_VERSION_1_10_0);
 153     set_resetvec(env, DEFAULT_RSTVEC);
 154     set_feature(env, RISCV_FEATURE_MMU);
 155     set_feature(env, RISCV_FEATURE_PMP);
 156 }
 157
 158 static void rv32imacu_nommu_cpu_init(Object *obj)
 159 {
 160     CPURISCVState *env = &RISCV_CPU(obj)->env;
 161     set_misa(env, RV32 | RVI | RVM | RVA | RVC | RVU);
 162     set_priv_version(env, PRIV_VERSION_1_10_0);
 163     set_resetvec(env, DEFAULT_RSTVEC);
 164     set_feature(env, RISCV_FEATURE_PMP);
 165 }
 166
 167 static void rv32imafcu_nommu_cpu_init(Object *obj)
 168 {
 169     CPURISCVState *env = &RISCV_CPU(obj)->env;
 170     set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVC | RVU);
 171     set_priv_version(env, PRIV_VERSION_1_10_0);
 172     set_resetvec(env, DEFAULT_RSTVEC);
 173     set_feature(env, RISCV_FEATURE_PMP);
 174 }
 175
 176 #elif defined(TARGET_RISCV64)
 177
 178 static void riscv_base64_cpu_init(Object *obj)
 179 {
 180     CPURISCVState *env = &RISCV_CPU(obj)->env;
 181     /* We set this in the realise function */
 182     set_misa(env, 0);
 183 }
 184
 185 static void rv64gcsu_priv1_09_1_cpu_init(Object *obj)
 186 {
 187     CPURISCVState *env = &RISCV_CPU(obj)->env;
 188     set_misa(env, RV64 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
 189     set_priv_version(env, PRIV_VERSION_1_09_1);
 190     set_resetvec(env, DEFAULT_RSTVEC);
 191     set_feature(env, RISCV_FEATURE_MMU);
 192     set_feature(env, RISCV_FEATURE_PMP);
 193 }
 194
 195 static void rv64gcsu_priv1_10_0_cpu_init(Object *obj)
 196 {
 197     CPURISCVState *env = &RISCV_CPU(obj)->env;
 198     set_misa(env, RV64 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
 199     set_priv_version(env, PRIV_VERSION_1_10_0);
 200     set_resetvec(env, DEFAULT_RSTVEC);
 201     set_feature(env, RISCV_FEATURE_MMU);
 202     set_feature(env, RISCV_FEATURE_PMP);
 203 }
 204
 205 static void rv64imacu_nommu_cpu_init(Object *obj)
 206 {
 207     CPURISCVState *env = &RISCV_CPU(obj)->env;
 208     set_misa(env, RV64 | RVI | RVM | RVA | RVC | RVU);
 209     set_priv_version(env, PRIV_VERSION_1_10_0);
 210     set_resetvec(env, DEFAULT_RSTVEC);
 211     set_feature(env, RISCV_FEATURE_PMP);
 212 }
 213
 214 #endif
 215
 216 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
 217 {
 218     ObjectClass *oc;
 219     char *typename;
 220     char **cpuname;
 221
 222     cpuname = g_strsplit(cpu_model, ",", 1);
 223     typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]);
 224     oc = object_class_by_name(typename);
 225     g_strfreev(cpuname);
 226     g_free(typename);
 227     if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
 228         object_class_is_abstract(oc)) {
 229         return NULL;
 230     }
 231     return oc;
 232 }
 233
 234 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
 235 {
 236     RISCVCPU *cpu = RISCV_CPU(cs);
 237     CPURISCVState *env = &cpu->env;
 238     int i;
 239
 240 #if !defined(CONFIG_USER_ONLY)
 241     if (riscv_has_ext(env, RVH)) {
 242         qemu_fprintf(f, " %s %d\n", "V      =  ", riscv_cpu_virt_enabled(env));
 243     }
 244 #endif
 245     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc      ", env->pc);
 246 #ifndef CONFIG_USER_ONLY
 247     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mhartid ", env->mhartid);
 248     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatus ", env->mstatus);
 249 #ifdef TARGET_RISCV32
 250     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatush ", env->mstatush);
 251 #endif
 252     if (riscv_has_ext(env, RVH)) {
 253         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hstatus ", env->hstatus);
 254         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsstatus ", env->vsstatus);
 255     }
 256     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mip     ", env->mip);
 257     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mie     ", env->mie);
 258     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mideleg ", env->mideleg);
 259     if (riscv_has_ext(env, RVH)) {
 260         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hideleg ", env->hideleg);
 261     }
 262     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "medeleg ", env->medeleg);
 263     if (riscv_has_ext(env, RVH)) {
 264         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hedeleg ", env->hedeleg);
 265     }
 266     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtvec   ", env->mtvec);
 267     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stvec   ", env->stvec);
 268     if (riscv_has_ext(env, RVH)) {
 269         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vstvec  ", env->vstvec);
 270     }
 271     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mepc    ", env->mepc);
 272     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "sepc    ", env->sepc);
 273     if (riscv_has_ext(env, RVH)) {
 274         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsepc   ", env->vsepc);
 275     }
 276     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mcause  ", env->mcause);
 277     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "scause  ", env->scause);
 278     if (riscv_has_ext(env, RVH)) {
 279         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vscause ", env->vscause);
 280     }
 281     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval ", env->mtval);
 282     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stval ", env->sbadaddr);
 283     if (riscv_has_ext(env, RVH)) {
 284         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "htval ", env->htval);
 285         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval2 ", env->mtval2);
 286     }
 287 #endif
 288
 289     for (i = 0; i < 32; i++) {
 290         qemu_fprintf(f, " %s " TARGET_FMT_lx,
 291                      riscv_int_regnames[i], env->gpr[i]);
 292         if ((i & 3) == 3) {
 293             qemu_fprintf(f, "\n");
 294         }
 295     }
 296     if (flags & CPU_DUMP_FPU) {
 297         for (i = 0; i < 32; i++) {
 298             qemu_fprintf(f, " %s %016" PRIx64,
 299                          riscv_fpr_regnames[i], env->fpr[i]);
 300             if ((i & 3) == 3) {
 301                 qemu_fprintf(f, "\n");
 302             }
 303         }
 304     }
 305 }
 306
 307 static void riscv_cpu_set_pc(CPUState *cs, vaddr value)
 308 {
 309     RISCVCPU *cpu = RISCV_CPU(cs);
 310     CPURISCVState *env = &cpu->env;
 311     env->pc = value;
 312 }
 313
 314 static void riscv_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
 315 {
 316     RISCVCPU *cpu = RISCV_CPU(cs);
 317     CPURISCVState *env = &cpu->env;
 318     env->pc = tb->pc;
 319 }
 320
 321 static bool riscv_cpu_has_work(CPUState *cs)
 322 {
 323 #ifndef CONFIG_USER_ONLY
 324     RISCVCPU *cpu = RISCV_CPU(cs);
 325     CPURISCVState *env = &cpu->env;
 326     /*
 327      * Definition of the WFI instruction requires it to ignore the privilege
 328      * mode and delegation registers, but respect individual enables
 329      */
 330     return (env->mip & env->mie) != 0;
 331 #else
 332     return true;
 333 #endif
 334 }
 335
 336 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
 337                           target_ulong *data)
 338 {
 339     env->pc = data[0];
 340 }
 341
 342 static void riscv_cpu_reset(DeviceState *dev)
 343 {
 344     CPUState *cs = CPU(dev);
 345     RISCVCPU *cpu = RISCV_CPU(cs);
 346     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
 347     CPURISCVState *env = &cpu->env;
 348
 349     mcc->parent_reset(dev);
 350 #ifndef CONFIG_USER_ONLY
 351     env->priv = PRV_M;
 352     env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
 353     env->mcause = 0;
 354     env->pc = env->resetvec;
 355 #endif
 356     cs->exception_index = EXCP_NONE;
 357     env->load_res = -1;
 358     set_default_nan_mode(1, &env->fp_status);
 359 }
 360
 361 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
 362 {
 363 #if defined(TARGET_RISCV32)
 364     info->print_insn = print_insn_riscv32;
 365 #elif defined(TARGET_RISCV64)
 366     info->print_insn = print_insn_riscv64;
 367 #endif
 368 }
 369
 370 static void riscv_cpu_realize(DeviceState *dev, Error **errp)
 371 {
 372     CPUState *cs = CPU(dev);
 373     RISCVCPU *cpu = RISCV_CPU(dev);
 374     CPURISCVState *env = &cpu->env;
 375     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
 376     int priv_version = PRIV_VERSION_1_11_0;
 377     target_ulong target_misa = 0;
 378     Error *local_err = NULL;
 379
 380     cpu_exec_realizefn(cs, &local_err);
 381     if (local_err != NULL) {
 382         error_propagate(errp, local_err);
 383         return;
 384     }
 385
 386     if (cpu->cfg.priv_spec) {
 387         if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
 388             priv_version = PRIV_VERSION_1_11_0;
 389         } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
 390             priv_version = PRIV_VERSION_1_10_0;
 391         } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.9.1")) {
 392             priv_version = PRIV_VERSION_1_09_1;
 393         } else {
 394             error_setg(errp,
 395                        "Unsupported privilege spec version '%s'",
 396                        cpu->cfg.priv_spec);
 397             return;
 398         }
 399     }
 400
 401     set_priv_version(env, priv_version);
 402     set_resetvec(env, DEFAULT_RSTVEC);
 403
 404     if (cpu->cfg.mmu) {
 405         set_feature(env, RISCV_FEATURE_MMU);
 406     }
 407
 408     if (cpu->cfg.pmp) {
 409         set_feature(env, RISCV_FEATURE_PMP);
 410     }
 411
 412     /* If misa isn't set (rv32 and rv64 machines) set it here */
 413     if (!env->misa) {
 414         /* Do some ISA extension error checking */
 415         if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
 416             error_setg(errp,
 417                        "I and E extensions are incompatible");
 418                        return;
 419        }
 420
 421         if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
 422             error_setg(errp,
 423                        "Either I or E extension must be set");
 424                        return;
 425        }
 426
 427        if (cpu->cfg.ext_g && !(cpu->cfg.ext_i & cpu->cfg.ext_m &
 428                                cpu->cfg.ext_a & cpu->cfg.ext_f &
 429                                cpu->cfg.ext_d)) {
 430             warn_report("Setting G will also set IMAFD");
 431             cpu->cfg.ext_i = true;
 432             cpu->cfg.ext_m = true;
 433             cpu->cfg.ext_a = true;
 434             cpu->cfg.ext_f = true;
 435             cpu->cfg.ext_d = true;
 436         }
 437
 438         /* Set the ISA extensions, checks should have happened above */
 439         if (cpu->cfg.ext_i) {
 440             target_misa |= RVI;
 441         }
 442         if (cpu->cfg.ext_e) {
 443             target_misa |= RVE;
 444         }
 445         if (cpu->cfg.ext_m) {
 446             target_misa |= RVM;
 447         }
 448         if (cpu->cfg.ext_a) {
 449             target_misa |= RVA;
 450         }
 451         if (cpu->cfg.ext_f) {
 452             target_misa |= RVF;
 453         }
 454         if (cpu->cfg.ext_d) {
 455             target_misa |= RVD;
 456         }
 457         if (cpu->cfg.ext_c) {
 458             target_misa |= RVC;
 459         }
 460         if (cpu->cfg.ext_s) {
 461             target_misa |= RVS;
 462         }
 463         if (cpu->cfg.ext_u) {
 464             target_misa |= RVU;
 465         }
 466         if (cpu->cfg.ext_h) {
 467             target_misa |= RVH;
 468         }
 469
 470         set_misa(env, RVXLEN | target_misa);
 471     }
 472
 473     riscv_cpu_register_gdb_regs_for_features(cs);
 474
 475     qemu_init_vcpu(cs);
 476     cpu_reset(cs);
 477
 478     mcc->parent_realize(dev, errp);
 479 }
 480
 481 static void riscv_cpu_init(Object *obj)
 482 {
 483     RISCVCPU *cpu = RISCV_CPU(obj);
 484
 485     cpu_set_cpustate_pointers(cpu);
 486 }
 487
 488 static const VMStateDescription vmstate_riscv_cpu = {
 489     .name = "cpu",
 490     .unmigratable = 1,
 491 };
 492
 493 static Property riscv_cpu_properties[] = {
 494     DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true),
 495     DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false),
 496     DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, true),
 497     DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
 498     DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true),
 499     DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
 500     DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
 501     DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
 502     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
 503     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
 504     /* This is experimental so mark with 'x-' */
 505     DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false),
 506     DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
 507     DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
 508     DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
 509     DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
 510     DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
 511     DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
 512     DEFINE_PROP_END_OF_LIST(),
 513 };
 514
 515 static void riscv_cpu_class_init(ObjectClass *c, void *data)
 516 {
 517     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
 518     CPUClass *cc = CPU_CLASS(c);
 519     DeviceClass *dc = DEVICE_CLASS(c);
 520
 521     device_class_set_parent_realize(dc, riscv_cpu_realize,
 522                                     &mcc->parent_realize);
 523
 524     device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
 525
 526     cc->class_by_name = riscv_cpu_class_by_name;
 527     cc->has_work = riscv_cpu_has_work;
 528     cc->do_interrupt = riscv_cpu_do_interrupt;
 529     cc->cpu_exec_interrupt = riscv_cpu_exec_interrupt;
 530     cc->dump_state = riscv_cpu_dump_state;
 531     cc->set_pc = riscv_cpu_set_pc;
 532     cc->synchronize_from_tb = riscv_cpu_synchronize_from_tb;
 533     cc->gdb_read_register = riscv_cpu_gdb_read_register;
 534     cc->gdb_write_register = riscv_cpu_gdb_write_register;
 535     cc->gdb_num_core_regs = 33;
 536 #if defined(TARGET_RISCV32)
 537     cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
 538 #elif defined(TARGET_RISCV64)
 539     cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
 540 #endif
 541     cc->gdb_stop_before_watchpoint = true;
 542     cc->disas_set_info = riscv_cpu_disas_set_info;
 543 #ifndef CONFIG_USER_ONLY
 544     cc->do_transaction_failed = riscv_cpu_do_transaction_failed;
 545     cc->do_unaligned_access = riscv_cpu_do_unaligned_access;
 546     cc->get_phys_page_debug = riscv_cpu_get_phys_page_debug;
 547 #endif
 548 #ifdef CONFIG_TCG
 549     cc->tcg_initialize = riscv_translate_init;
 550     cc->tlb_fill = riscv_cpu_tlb_fill;
 551 #endif
 552     /* For now, mark unmigratable: */
 553     cc->vmsd = &vmstate_riscv_cpu;
 554     device_class_set_props(dc, riscv_cpu_properties);
 555 }
 556
 557 char *riscv_isa_string(RISCVCPU *cpu)
 558 {
 559     int i;
 560     const size_t maxlen = sizeof("rv128") + sizeof(riscv_exts) + 1;
 561     char *isa_str = g_new(char, maxlen);
 562     char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
 563     for (i = 0; i < sizeof(riscv_exts); i++) {
 564         if (cpu->env.misa & RV(riscv_exts[i])) {
 565             *p++ = qemu_tolower(riscv_exts[i]);
 566         }
 567     }
 568     *p = '\0';
 569     return isa_str;
 570 }
 571
 572 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
 573 {
 574     ObjectClass *class_a = (ObjectClass *)a;
 575     ObjectClass *class_b = (ObjectClass *)b;
 576     const char *name_a, *name_b;
 577
 578     name_a = object_class_get_name(class_a);
 579     name_b = object_class_get_name(class_b);
 580     return strcmp(name_a, name_b);
 581 }
 582
 583 static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
 584 {
 585     const char *typename = object_class_get_name(OBJECT_CLASS(data));
 586     int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
 587
 588     qemu_printf("%.*s\n", len, typename);
 589 }
 590
 591 void riscv_cpu_list(void)
 592 {
 593     GSList *list;
 594
 595     list = object_class_get_list(TYPE_RISCV_CPU, false);
 596     list = g_slist_sort(list, riscv_cpu_list_compare);
 597     g_slist_foreach(list, riscv_cpu_list_entry, NULL);
 598     g_slist_free(list);
 599 }
 600
 601 #define DEFINE_CPU(type_name, initfn)      \
 602     {                                      \
 603         .name = type_name,                 \
 604         .parent = TYPE_RISCV_CPU,          \
 605         .instance_init = initfn            \
 606     }
 607
 608 static const TypeInfo riscv_cpu_type_infos[] = {
 609     {
 610         .name = TYPE_RISCV_CPU,
 611         .parent = TYPE_CPU,
 612         .instance_size = sizeof(RISCVCPU),
 613         .instance_init = riscv_cpu_init,
 614         .abstract = true,
 615         .class_size = sizeof(RISCVCPUClass),
 616         .class_init = riscv_cpu_class_init,
 617     },
 618     DEFINE_CPU(TYPE_RISCV_CPU_ANY,              riscv_any_cpu_init),
 619 #if defined(TARGET_RISCV32)
 620     DEFINE_CPU(TYPE_RISCV_CPU_BASE32,           riscv_base32_cpu_init),
 621     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31,       rv32imacu_nommu_cpu_init),
 622     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34,       rv32imafcu_nommu_cpu_init),
 623     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34,       rv32gcsu_priv1_10_0_cpu_init),
 624     /* Depreacted */
 625     DEFINE_CPU(TYPE_RISCV_CPU_RV32IMACU_NOMMU,  rv32imacu_nommu_cpu_init),
 626     DEFINE_CPU(TYPE_RISCV_CPU_RV32GCSU_V1_09_1, rv32gcsu_priv1_09_1_cpu_init),
 627     DEFINE_CPU(TYPE_RISCV_CPU_RV32GCSU_V1_10_0, rv32gcsu_priv1_10_0_cpu_init)
 628 #elif defined(TARGET_RISCV64)
 629     DEFINE_CPU(TYPE_RISCV_CPU_BASE64,           riscv_base64_cpu_init),
 630     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51,       rv64imacu_nommu_cpu_init),
 631     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54,       rv64gcsu_priv1_10_0_cpu_init),
 632     /* Deprecated */
 633     DEFINE_CPU(TYPE_RISCV_CPU_RV64IMACU_NOMMU,  rv64imacu_nommu_cpu_init),
 634     DEFINE_CPU(TYPE_RISCV_CPU_RV64GCSU_V1_09_1, rv64gcsu_priv1_09_1_cpu_init),
 635     DEFINE_CPU(TYPE_RISCV_CPU_RV64GCSU_V1_10_0, rv64gcsu_priv1_10_0_cpu_init)
 636 #endif
 637 };
 638
 639 DEFINE_TYPES(riscv_cpu_type_infos)