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 static void riscv_base_cpu_init(Object *obj)
 130 {
 131     CPURISCVState *env = &RISCV_CPU(obj)->env;
 132     /* We set this in the realise function */
 133     set_misa(env, 0);
 134     set_resetvec(env, DEFAULT_RSTVEC);
 135 }
 136
 137 static void rvxx_gcsu_priv1_10_0_cpu_init(Object *obj)
 138 {
 139     CPURISCVState *env = &RISCV_CPU(obj)->env;
 140     set_misa(env, RVXLEN | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
 141     set_priv_version(env, PRIV_VERSION_1_10_0);
 142     set_resetvec(env, DEFAULT_RSTVEC);
 143 }
 144
 145 static void rvxx_imacu_nommu_cpu_init(Object *obj)
 146 {
 147     CPURISCVState *env = &RISCV_CPU(obj)->env;
 148     set_misa(env, RVXLEN | RVI | RVM | RVA | RVC | RVU);
 149     set_priv_version(env, PRIV_VERSION_1_10_0);
 150     set_resetvec(env, DEFAULT_RSTVEC);
 151     qdev_prop_set_bit(DEVICE(obj), "mmu", false);
 152 }
 153
 154 #if defined(TARGET_RISCV32)
 155
 156 static void rv32_ibex_cpu_init(Object *obj)
 157 {
 158     CPURISCVState *env = &RISCV_CPU(obj)->env;
 159     set_misa(env, RV32 | RVI | RVM | RVC | RVU);
 160     set_priv_version(env, PRIV_VERSION_1_10_0);
 161     set_resetvec(env, 0x8090);
 162     qdev_prop_set_bit(DEVICE(obj), "mmu", false);
 163 }
 164
 165 static void rv32_imafcu_nommu_cpu_init(Object *obj)
 166 {
 167     CPURISCVState *env = &RISCV_CPU(obj)->env;
 168     set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVC | RVU);
 169     set_priv_version(env, PRIV_VERSION_1_10_0);
 170     set_resetvec(env, DEFAULT_RSTVEC);
 171     qdev_prop_set_bit(DEVICE(obj), "mmu", false);
 172 }
 173
 174 #endif
 175
 176 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
 177 {
 178     ObjectClass *oc;
 179     char *typename;
 180     char **cpuname;
 181
 182     cpuname = g_strsplit(cpu_model, ",", 1);
 183     typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]);
 184     oc = object_class_by_name(typename);
 185     g_strfreev(cpuname);
 186     g_free(typename);
 187     if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
 188         object_class_is_abstract(oc)) {
 189         return NULL;
 190     }
 191     return oc;
 192 }
 193
 194 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
 195 {
 196     RISCVCPU *cpu = RISCV_CPU(cs);
 197     CPURISCVState *env = &cpu->env;
 198     int i;
 199
 200 #if !defined(CONFIG_USER_ONLY)
 201     if (riscv_has_ext(env, RVH)) {
 202         qemu_fprintf(f, " %s %d\n", "V      =  ", riscv_cpu_virt_enabled(env));
 203     }
 204 #endif
 205     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc      ", env->pc);
 206 #ifndef CONFIG_USER_ONLY
 207     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mhartid ", env->mhartid);
 208     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatus ", env->mstatus);
 209 #ifdef TARGET_RISCV32
 210     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatush ", env->mstatush);
 211 #endif
 212     if (riscv_has_ext(env, RVH)) {
 213         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hstatus ", env->hstatus);
 214         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsstatus ", env->vsstatus);
 215     }
 216     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mip     ", env->mip);
 217     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mie     ", env->mie);
 218     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mideleg ", env->mideleg);
 219     if (riscv_has_ext(env, RVH)) {
 220         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hideleg ", env->hideleg);
 221     }
 222     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "medeleg ", env->medeleg);
 223     if (riscv_has_ext(env, RVH)) {
 224         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hedeleg ", env->hedeleg);
 225     }
 226     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtvec   ", env->mtvec);
 227     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stvec   ", env->stvec);
 228     if (riscv_has_ext(env, RVH)) {
 229         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vstvec  ", env->vstvec);
 230     }
 231     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mepc    ", env->mepc);
 232     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "sepc    ", env->sepc);
 233     if (riscv_has_ext(env, RVH)) {
 234         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsepc   ", env->vsepc);
 235     }
 236     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mcause  ", env->mcause);
 237     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "scause  ", env->scause);
 238     if (riscv_has_ext(env, RVH)) {
 239         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vscause ", env->vscause);
 240     }
 241     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval ", env->mtval);
 242     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stval ", env->sbadaddr);
 243     if (riscv_has_ext(env, RVH)) {
 244         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "htval ", env->htval);
 245         qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval2 ", env->mtval2);
 246     }
 247 #endif
 248
 249     for (i = 0; i < 32; i++) {
 250         qemu_fprintf(f, " %s " TARGET_FMT_lx,
 251                      riscv_int_regnames[i], env->gpr[i]);
 252         if ((i & 3) == 3) {
 253             qemu_fprintf(f, "\n");
 254         }
 255     }
 256     if (flags & CPU_DUMP_FPU) {
 257         for (i = 0; i < 32; i++) {
 258             qemu_fprintf(f, " %s %016" PRIx64,
 259                          riscv_fpr_regnames[i], env->fpr[i]);
 260             if ((i & 3) == 3) {
 261                 qemu_fprintf(f, "\n");
 262             }
 263         }
 264     }
 265 }
 266
 267 static void riscv_cpu_set_pc(CPUState *cs, vaddr value)
 268 {
 269     RISCVCPU *cpu = RISCV_CPU(cs);
 270     CPURISCVState *env = &cpu->env;
 271     env->pc = value;
 272 }
 273
 274 static void riscv_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
 275 {
 276     RISCVCPU *cpu = RISCV_CPU(cs);
 277     CPURISCVState *env = &cpu->env;
 278     env->pc = tb->pc;
 279 }
 280
 281 static bool riscv_cpu_has_work(CPUState *cs)
 282 {
 283 #ifndef CONFIG_USER_ONLY
 284     RISCVCPU *cpu = RISCV_CPU(cs);
 285     CPURISCVState *env = &cpu->env;
 286     /*
 287      * Definition of the WFI instruction requires it to ignore the privilege
 288      * mode and delegation registers, but respect individual enables
 289      */
 290     return (env->mip & env->mie) != 0;
 291 #else
 292     return true;
 293 #endif
 294 }
 295
 296 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
 297                           target_ulong *data)
 298 {
 299     env->pc = data[0];
 300 }
 301
 302 static void riscv_cpu_reset(DeviceState *dev)
 303 {
 304     CPUState *cs = CPU(dev);
 305     RISCVCPU *cpu = RISCV_CPU(cs);
 306     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
 307     CPURISCVState *env = &cpu->env;
 308
 309     mcc->parent_reset(dev);
 310 #ifndef CONFIG_USER_ONLY
 311     env->priv = PRV_M;
 312     env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
 313     env->mcause = 0;
 314     env->pc = env->resetvec;
 315 #endif
 316     cs->exception_index = EXCP_NONE;
 317     env->load_res = -1;
 318     set_default_nan_mode(1, &env->fp_status);
 319 }
 320
 321 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
 322 {
 323 #if defined(TARGET_RISCV32)
 324     info->print_insn = print_insn_riscv32;
 325 #elif defined(TARGET_RISCV64)
 326     info->print_insn = print_insn_riscv64;
 327 #endif
 328 }
 329
 330 static void riscv_cpu_realize(DeviceState *dev, Error **errp)
 331 {
 332     CPUState *cs = CPU(dev);
 333     RISCVCPU *cpu = RISCV_CPU(dev);
 334     CPURISCVState *env = &cpu->env;
 335     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
 336     int priv_version = PRIV_VERSION_1_11_0;
 337     target_ulong target_misa = 0;
 338     Error *local_err = NULL;
 339
 340     cpu_exec_realizefn(cs, &local_err);
 341     if (local_err != NULL) {
 342         error_propagate(errp, local_err);
 343         return;
 344     }
 345
 346     if (cpu->cfg.priv_spec) {
 347         if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
 348             priv_version = PRIV_VERSION_1_11_0;
 349         } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
 350             priv_version = PRIV_VERSION_1_10_0;
 351         } else {
 352             error_setg(errp,
 353                        "Unsupported privilege spec version '%s'",
 354                        cpu->cfg.priv_spec);
 355             return;
 356         }
 357     }
 358
 359     set_priv_version(env, priv_version);
 360
 361     if (cpu->cfg.mmu) {
 362         set_feature(env, RISCV_FEATURE_MMU);
 363     }
 364
 365     if (cpu->cfg.pmp) {
 366         set_feature(env, RISCV_FEATURE_PMP);
 367     }
 368
 369     /* If misa isn't set (rv32 and rv64 machines) set it here */
 370     if (!env->misa) {
 371         /* Do some ISA extension error checking */
 372         if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
 373             error_setg(errp,
 374                        "I and E extensions are incompatible");
 375                        return;
 376        }
 377
 378         if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
 379             error_setg(errp,
 380                        "Either I or E extension must be set");
 381                        return;
 382        }
 383
 384        if (cpu->cfg.ext_g && !(cpu->cfg.ext_i & cpu->cfg.ext_m &
 385                                cpu->cfg.ext_a & cpu->cfg.ext_f &
 386                                cpu->cfg.ext_d)) {
 387             warn_report("Setting G will also set IMAFD");
 388             cpu->cfg.ext_i = true;
 389             cpu->cfg.ext_m = true;
 390             cpu->cfg.ext_a = true;
 391             cpu->cfg.ext_f = true;
 392             cpu->cfg.ext_d = true;
 393         }
 394
 395         /* Set the ISA extensions, checks should have happened above */
 396         if (cpu->cfg.ext_i) {
 397             target_misa |= RVI;
 398         }
 399         if (cpu->cfg.ext_e) {
 400             target_misa |= RVE;
 401         }
 402         if (cpu->cfg.ext_m) {
 403             target_misa |= RVM;
 404         }
 405         if (cpu->cfg.ext_a) {
 406             target_misa |= RVA;
 407         }
 408         if (cpu->cfg.ext_f) {
 409             target_misa |= RVF;
 410         }
 411         if (cpu->cfg.ext_d) {
 412             target_misa |= RVD;
 413         }
 414         if (cpu->cfg.ext_c) {
 415             target_misa |= RVC;
 416         }
 417         if (cpu->cfg.ext_s) {
 418             target_misa |= RVS;
 419         }
 420         if (cpu->cfg.ext_u) {
 421             target_misa |= RVU;
 422         }
 423         if (cpu->cfg.ext_h) {
 424             target_misa |= RVH;
 425         }
 426
 427         set_misa(env, RVXLEN | target_misa);
 428     }
 429
 430     riscv_cpu_register_gdb_regs_for_features(cs);
 431
 432     qemu_init_vcpu(cs);
 433     cpu_reset(cs);
 434
 435     mcc->parent_realize(dev, errp);
 436 }
 437
 438 static void riscv_cpu_init(Object *obj)
 439 {
 440     RISCVCPU *cpu = RISCV_CPU(obj);
 441
 442     cpu_set_cpustate_pointers(cpu);
 443 }
 444
 445 #ifndef CONFIG_USER_ONLY
 446 static const VMStateDescription vmstate_riscv_cpu = {
 447     .name = "cpu",
 448     .unmigratable = 1,
 449 };
 450 #endif
 451
 452 static Property riscv_cpu_properties[] = {
 453     DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true),
 454     DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false),
 455     DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, true),
 456     DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
 457     DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true),
 458     DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
 459     DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
 460     DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
 461     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
 462     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
 463     /* This is experimental so mark with 'x-' */
 464     DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false),
 465     DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
 466     DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
 467     DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
 468     DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
 469     DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
 470     DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
 471     DEFINE_PROP_END_OF_LIST(),
 472 };
 473
 474 static void riscv_cpu_class_init(ObjectClass *c, void *data)
 475 {
 476     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
 477     CPUClass *cc = CPU_CLASS(c);
 478     DeviceClass *dc = DEVICE_CLASS(c);
 479
 480     device_class_set_parent_realize(dc, riscv_cpu_realize,
 481                                     &mcc->parent_realize);
 482
 483     device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
 484
 485     cc->class_by_name = riscv_cpu_class_by_name;
 486     cc->has_work = riscv_cpu_has_work;
 487     cc->do_interrupt = riscv_cpu_do_interrupt;
 488     cc->cpu_exec_interrupt = riscv_cpu_exec_interrupt;
 489     cc->dump_state = riscv_cpu_dump_state;
 490     cc->set_pc = riscv_cpu_set_pc;
 491     cc->synchronize_from_tb = riscv_cpu_synchronize_from_tb;
 492     cc->gdb_read_register = riscv_cpu_gdb_read_register;
 493     cc->gdb_write_register = riscv_cpu_gdb_write_register;
 494     cc->gdb_num_core_regs = 33;
 495 #if defined(TARGET_RISCV32)
 496     cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
 497 #elif defined(TARGET_RISCV64)
 498     cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
 499 #endif
 500     cc->gdb_stop_before_watchpoint = true;
 501     cc->disas_set_info = riscv_cpu_disas_set_info;
 502 #ifndef CONFIG_USER_ONLY
 503     cc->do_transaction_failed = riscv_cpu_do_transaction_failed;
 504     cc->do_unaligned_access = riscv_cpu_do_unaligned_access;
 505     cc->get_phys_page_debug = riscv_cpu_get_phys_page_debug;
 506     /* For now, mark unmigratable: */
 507     cc->vmsd = &vmstate_riscv_cpu;
 508 #endif
 509 #ifdef CONFIG_TCG
 510     cc->tcg_initialize = riscv_translate_init;
 511     cc->tlb_fill = riscv_cpu_tlb_fill;
 512 #endif
 513     device_class_set_props(dc, riscv_cpu_properties);
 514 }
 515
 516 char *riscv_isa_string(RISCVCPU *cpu)
 517 {
 518     int i;
 519     const size_t maxlen = sizeof("rv128") + sizeof(riscv_exts) + 1;
 520     char *isa_str = g_new(char, maxlen);
 521     char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
 522     for (i = 0; i < sizeof(riscv_exts); i++) {
 523         if (cpu->env.misa & RV(riscv_exts[i])) {
 524             *p++ = qemu_tolower(riscv_exts[i]);
 525         }
 526     }
 527     *p = '\0';
 528     return isa_str;
 529 }
 530
 531 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
 532 {
 533     ObjectClass *class_a = (ObjectClass *)a;
 534     ObjectClass *class_b = (ObjectClass *)b;
 535     const char *name_a, *name_b;
 536
 537     name_a = object_class_get_name(class_a);
 538     name_b = object_class_get_name(class_b);
 539     return strcmp(name_a, name_b);
 540 }
 541
 542 static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
 543 {
 544     const char *typename = object_class_get_name(OBJECT_CLASS(data));
 545     int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
 546
 547     qemu_printf("%.*s\n", len, typename);
 548 }
 549
 550 void riscv_cpu_list(void)
 551 {
 552     GSList *list;
 553
 554     list = object_class_get_list(TYPE_RISCV_CPU, false);
 555     list = g_slist_sort(list, riscv_cpu_list_compare);
 556     g_slist_foreach(list, riscv_cpu_list_entry, NULL);
 557     g_slist_free(list);
 558 }
 559
 560 #define DEFINE_CPU(type_name, initfn)      \
 561     {                                      \
 562         .name = type_name,                 \
 563         .parent = TYPE_RISCV_CPU,          \
 564         .instance_init = initfn            \
 565     }
 566
 567 static const TypeInfo riscv_cpu_type_infos[] = {
 568     {
 569         .name = TYPE_RISCV_CPU,
 570         .parent = TYPE_CPU,
 571         .instance_size = sizeof(RISCVCPU),
 572         .instance_init = riscv_cpu_init,
 573         .abstract = true,
 574         .class_size = sizeof(RISCVCPUClass),
 575         .class_init = riscv_cpu_class_init,
 576     },
 577     DEFINE_CPU(TYPE_RISCV_CPU_ANY,              riscv_any_cpu_init),
 578 #if defined(TARGET_RISCV32)
 579     DEFINE_CPU(TYPE_RISCV_CPU_BASE32,           riscv_base_cpu_init),
 580     DEFINE_CPU(TYPE_RISCV_CPU_IBEX,             rv32_ibex_cpu_init),
 581     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31,       rvxx_imacu_nommu_cpu_init),
 582     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34,       rv32_imafcu_nommu_cpu_init),
 583     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34,       rvxx_gcsu_priv1_10_0_cpu_init),
 584 #elif defined(TARGET_RISCV64)
 585     DEFINE_CPU(TYPE_RISCV_CPU_BASE64,           riscv_base_cpu_init),
 586     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51,       rvxx_imacu_nommu_cpu_init),
 587     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54,       rvxx_gcsu_priv1_10_0_cpu_init),
 588 #endif
 589 };
 590
 591 DEFINE_TYPES(riscv_cpu_type_infos)