xref: /qemu/target/riscv/cpu.c (revision 118d4ed0)
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 "internals.h"
26 #include "exec/exec-all.h"
27 #include "qapi/error.h"
28 #include "qemu/error-report.h"
29 #include "hw/qdev-properties.h"
30 #include "migration/vmstate.h"
31 #include "fpu/softfloat-helpers.h"
32 #include "sysemu/kvm.h"
33 #include "kvm_riscv.h"
34 
35 /* RISC-V CPU definitions */
36 
37 #define RISCV_CPU_MARCHID   ((QEMU_VERSION_MAJOR << 16) | \
38                              (QEMU_VERSION_MINOR << 8)  | \
39                              (QEMU_VERSION_MICRO))
40 #define RISCV_CPU_MIMPID    RISCV_CPU_MARCHID
41 
42 static const char riscv_single_letter_exts[] = "IEMAFDQCPVH";
43 
44 struct isa_ext_data {
45     const char *name;
46     bool enabled;
47 };
48 
49 const char * const riscv_int_regnames[] = {
50   "x0/zero", "x1/ra",  "x2/sp",  "x3/gp",  "x4/tp",  "x5/t0",   "x6/t1",
51   "x7/t2",   "x8/s0",  "x9/s1",  "x10/a0", "x11/a1", "x12/a2",  "x13/a3",
52   "x14/a4",  "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3",  "x20/s4",
53   "x21/s5",  "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11",
54   "x28/t3",  "x29/t4", "x30/t5", "x31/t6"
55 };
56 
57 const char * const riscv_int_regnamesh[] = {
58   "x0h/zeroh", "x1h/rah",  "x2h/sph",   "x3h/gph",   "x4h/tph",  "x5h/t0h",
59   "x6h/t1h",   "x7h/t2h",  "x8h/s0h",   "x9h/s1h",   "x10h/a0h", "x11h/a1h",
60   "x12h/a2h",  "x13h/a3h", "x14h/a4h",  "x15h/a5h",  "x16h/a6h", "x17h/a7h",
61   "x18h/s2h",  "x19h/s3h", "x20h/s4h",  "x21h/s5h",  "x22h/s6h", "x23h/s7h",
62   "x24h/s8h",  "x25h/s9h", "x26h/s10h", "x27h/s11h", "x28h/t3h", "x29h/t4h",
63   "x30h/t5h",  "x31h/t6h"
64 };
65 
66 const char * const riscv_fpr_regnames[] = {
67   "f0/ft0",   "f1/ft1",  "f2/ft2",   "f3/ft3",   "f4/ft4",  "f5/ft5",
68   "f6/ft6",   "f7/ft7",  "f8/fs0",   "f9/fs1",   "f10/fa0", "f11/fa1",
69   "f12/fa2",  "f13/fa3", "f14/fa4",  "f15/fa5",  "f16/fa6", "f17/fa7",
70   "f18/fs2",  "f19/fs3", "f20/fs4",  "f21/fs5",  "f22/fs6", "f23/fs7",
71   "f24/fs8",  "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9",
72   "f30/ft10", "f31/ft11"
73 };
74 
75 static const char * const riscv_excp_names[] = {
76     "misaligned_fetch",
77     "fault_fetch",
78     "illegal_instruction",
79     "breakpoint",
80     "misaligned_load",
81     "fault_load",
82     "misaligned_store",
83     "fault_store",
84     "user_ecall",
85     "supervisor_ecall",
86     "hypervisor_ecall",
87     "machine_ecall",
88     "exec_page_fault",
89     "load_page_fault",
90     "reserved",
91     "store_page_fault",
92     "reserved",
93     "reserved",
94     "reserved",
95     "reserved",
96     "guest_exec_page_fault",
97     "guest_load_page_fault",
98     "reserved",
99     "guest_store_page_fault",
100 };
101 
102 static const char * const riscv_intr_names[] = {
103     "u_software",
104     "s_software",
105     "vs_software",
106     "m_software",
107     "u_timer",
108     "s_timer",
109     "vs_timer",
110     "m_timer",
111     "u_external",
112     "s_external",
113     "vs_external",
114     "m_external",
115     "reserved",
116     "reserved",
117     "reserved",
118     "reserved"
119 };
120 
121 static void register_cpu_props(DeviceState *dev);
122 
123 const char *riscv_cpu_get_trap_name(target_ulong cause, bool async)
124 {
125     if (async) {
126         return (cause < ARRAY_SIZE(riscv_intr_names)) ?
127                riscv_intr_names[cause] : "(unknown)";
128     } else {
129         return (cause < ARRAY_SIZE(riscv_excp_names)) ?
130                riscv_excp_names[cause] : "(unknown)";
131     }
132 }
133 
134 static void set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext)
135 {
136     env->misa_mxl_max = env->misa_mxl = mxl;
137     env->misa_ext_mask = env->misa_ext = ext;
138 }
139 
140 static void set_priv_version(CPURISCVState *env, int priv_ver)
141 {
142     env->priv_ver = priv_ver;
143 }
144 
145 static void set_vext_version(CPURISCVState *env, int vext_ver)
146 {
147     env->vext_ver = vext_ver;
148 }
149 
150 static void set_resetvec(CPURISCVState *env, target_ulong resetvec)
151 {
152 #ifndef CONFIG_USER_ONLY
153     env->resetvec = resetvec;
154 #endif
155 }
156 
157 static void riscv_any_cpu_init(Object *obj)
158 {
159     CPURISCVState *env = &RISCV_CPU(obj)->env;
160 #if defined(TARGET_RISCV32)
161     set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU);
162 #elif defined(TARGET_RISCV64)
163     set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU);
164 #endif
165     set_priv_version(env, PRIV_VERSION_1_12_0);
166     register_cpu_props(DEVICE(obj));
167 }
168 
169 #if defined(TARGET_RISCV64)
170 static void rv64_base_cpu_init(Object *obj)
171 {
172     CPURISCVState *env = &RISCV_CPU(obj)->env;
173     /* We set this in the realise function */
174     set_misa(env, MXL_RV64, 0);
175     register_cpu_props(DEVICE(obj));
176 }
177 
178 static void rv64_sifive_u_cpu_init(Object *obj)
179 {
180     CPURISCVState *env = &RISCV_CPU(obj)->env;
181     set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
182     set_priv_version(env, PRIV_VERSION_1_10_0);
183 }
184 
185 static void rv64_sifive_e_cpu_init(Object *obj)
186 {
187     CPURISCVState *env = &RISCV_CPU(obj)->env;
188     RISCVCPU *cpu = RISCV_CPU(obj);
189 
190     set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU);
191     set_priv_version(env, PRIV_VERSION_1_10_0);
192     cpu->cfg.mmu = false;
193 }
194 
195 static void rv128_base_cpu_init(Object *obj)
196 {
197     if (qemu_tcg_mttcg_enabled()) {
198         /* Missing 128-bit aligned atomics */
199         error_report("128-bit RISC-V currently does not work with Multi "
200                      "Threaded TCG. Please use: -accel tcg,thread=single");
201         exit(EXIT_FAILURE);
202     }
203     CPURISCVState *env = &RISCV_CPU(obj)->env;
204     /* We set this in the realise function */
205     set_misa(env, MXL_RV128, 0);
206     register_cpu_props(DEVICE(obj));
207 }
208 #else
209 static void rv32_base_cpu_init(Object *obj)
210 {
211     CPURISCVState *env = &RISCV_CPU(obj)->env;
212     /* We set this in the realise function */
213     set_misa(env, MXL_RV32, 0);
214     register_cpu_props(DEVICE(obj));
215 }
216 
217 static void rv32_sifive_u_cpu_init(Object *obj)
218 {
219     CPURISCVState *env = &RISCV_CPU(obj)->env;
220     set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
221     set_priv_version(env, PRIV_VERSION_1_10_0);
222 }
223 
224 static void rv32_sifive_e_cpu_init(Object *obj)
225 {
226     CPURISCVState *env = &RISCV_CPU(obj)->env;
227     RISCVCPU *cpu = RISCV_CPU(obj);
228 
229     set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU);
230     set_priv_version(env, PRIV_VERSION_1_10_0);
231     cpu->cfg.mmu = false;
232 }
233 
234 static void rv32_ibex_cpu_init(Object *obj)
235 {
236     CPURISCVState *env = &RISCV_CPU(obj)->env;
237     RISCVCPU *cpu = RISCV_CPU(obj);
238 
239     set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU);
240     set_priv_version(env, PRIV_VERSION_1_10_0);
241     cpu->cfg.mmu = false;
242     cpu->cfg.epmp = true;
243 }
244 
245 static void rv32_imafcu_nommu_cpu_init(Object *obj)
246 {
247     CPURISCVState *env = &RISCV_CPU(obj)->env;
248     RISCVCPU *cpu = RISCV_CPU(obj);
249 
250     set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU);
251     set_priv_version(env, PRIV_VERSION_1_10_0);
252     set_resetvec(env, DEFAULT_RSTVEC);
253     cpu->cfg.mmu = false;
254 }
255 #endif
256 
257 #if defined(CONFIG_KVM)
258 static void riscv_host_cpu_init(Object *obj)
259 {
260     CPURISCVState *env = &RISCV_CPU(obj)->env;
261 #if defined(TARGET_RISCV32)
262     set_misa(env, MXL_RV32, 0);
263 #elif defined(TARGET_RISCV64)
264     set_misa(env, MXL_RV64, 0);
265 #endif
266     register_cpu_props(DEVICE(obj));
267 }
268 #endif
269 
270 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
271 {
272     ObjectClass *oc;
273     char *typename;
274     char **cpuname;
275 
276     cpuname = g_strsplit(cpu_model, ",", 1);
277     typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]);
278     oc = object_class_by_name(typename);
279     g_strfreev(cpuname);
280     g_free(typename);
281     if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
282         object_class_is_abstract(oc)) {
283         return NULL;
284     }
285     return oc;
286 }
287 
288 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
289 {
290     RISCVCPU *cpu = RISCV_CPU(cs);
291     CPURISCVState *env = &cpu->env;
292     int i;
293 
294 #if !defined(CONFIG_USER_ONLY)
295     if (riscv_has_ext(env, RVH)) {
296         qemu_fprintf(f, " %s %d\n", "V      =  ", riscv_cpu_virt_enabled(env));
297     }
298 #endif
299     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc      ", env->pc);
300 #ifndef CONFIG_USER_ONLY
301     {
302         static const int dump_csrs[] = {
303             CSR_MHARTID,
304             CSR_MSTATUS,
305             CSR_MSTATUSH,
306             CSR_HSTATUS,
307             CSR_VSSTATUS,
308             CSR_MIP,
309             CSR_MIE,
310             CSR_MIDELEG,
311             CSR_HIDELEG,
312             CSR_MEDELEG,
313             CSR_HEDELEG,
314             CSR_MTVEC,
315             CSR_STVEC,
316             CSR_VSTVEC,
317             CSR_MEPC,
318             CSR_SEPC,
319             CSR_VSEPC,
320             CSR_MCAUSE,
321             CSR_SCAUSE,
322             CSR_VSCAUSE,
323             CSR_MTVAL,
324             CSR_STVAL,
325             CSR_HTVAL,
326             CSR_MTVAL2,
327             CSR_MSCRATCH,
328             CSR_SSCRATCH,
329             CSR_SATP,
330             CSR_MMTE,
331             CSR_UPMBASE,
332             CSR_UPMMASK,
333             CSR_SPMBASE,
334             CSR_SPMMASK,
335             CSR_MPMBASE,
336             CSR_MPMMASK,
337         };
338 
339         for (int i = 0; i < ARRAY_SIZE(dump_csrs); ++i) {
340             int csrno = dump_csrs[i];
341             target_ulong val = 0;
342             RISCVException res = riscv_csrrw_debug(env, csrno, &val, 0, 0);
343 
344             /*
345              * Rely on the smode, hmode, etc, predicates within csr.c
346              * to do the filtering of the registers that are present.
347              */
348             if (res == RISCV_EXCP_NONE) {
349                 qemu_fprintf(f, " %-8s " TARGET_FMT_lx "\n",
350                              csr_ops[csrno].name, val);
351             }
352         }
353     }
354 #endif
355 
356     for (i = 0; i < 32; i++) {
357         qemu_fprintf(f, " %-8s " TARGET_FMT_lx,
358                      riscv_int_regnames[i], env->gpr[i]);
359         if ((i & 3) == 3) {
360             qemu_fprintf(f, "\n");
361         }
362     }
363     if (flags & CPU_DUMP_FPU) {
364         for (i = 0; i < 32; i++) {
365             qemu_fprintf(f, " %-8s %016" PRIx64,
366                          riscv_fpr_regnames[i], env->fpr[i]);
367             if ((i & 3) == 3) {
368                 qemu_fprintf(f, "\n");
369             }
370         }
371     }
372 }
373 
374 static void riscv_cpu_set_pc(CPUState *cs, vaddr value)
375 {
376     RISCVCPU *cpu = RISCV_CPU(cs);
377     CPURISCVState *env = &cpu->env;
378 
379     if (env->xl == MXL_RV32) {
380         env->pc = (int32_t)value;
381     } else {
382         env->pc = value;
383     }
384 }
385 
386 static void riscv_cpu_synchronize_from_tb(CPUState *cs,
387                                           const TranslationBlock *tb)
388 {
389     RISCVCPU *cpu = RISCV_CPU(cs);
390     CPURISCVState *env = &cpu->env;
391     RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL);
392 
393     if (xl == MXL_RV32) {
394         env->pc = (int32_t)tb->pc;
395     } else {
396         env->pc = tb->pc;
397     }
398 }
399 
400 static bool riscv_cpu_has_work(CPUState *cs)
401 {
402 #ifndef CONFIG_USER_ONLY
403     RISCVCPU *cpu = RISCV_CPU(cs);
404     CPURISCVState *env = &cpu->env;
405     /*
406      * Definition of the WFI instruction requires it to ignore the privilege
407      * mode and delegation registers, but respect individual enables
408      */
409     return riscv_cpu_all_pending(env) != 0;
410 #else
411     return true;
412 #endif
413 }
414 
415 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
416                           target_ulong *data)
417 {
418     RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL);
419     if (xl == MXL_RV32) {
420         env->pc = (int32_t)data[0];
421     } else {
422         env->pc = data[0];
423     }
424     env->bins = data[1];
425 }
426 
427 static void riscv_cpu_reset(DeviceState *dev)
428 {
429 #ifndef CONFIG_USER_ONLY
430     uint8_t iprio;
431     int i, irq, rdzero;
432 #endif
433     CPUState *cs = CPU(dev);
434     RISCVCPU *cpu = RISCV_CPU(cs);
435     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
436     CPURISCVState *env = &cpu->env;
437 
438     mcc->parent_reset(dev);
439 #ifndef CONFIG_USER_ONLY
440     env->misa_mxl = env->misa_mxl_max;
441     env->priv = PRV_M;
442     env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
443     if (env->misa_mxl > MXL_RV32) {
444         /*
445          * The reset status of SXL/UXL is undefined, but mstatus is WARL
446          * and we must ensure that the value after init is valid for read.
447          */
448         env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl);
449         env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
450         if (riscv_has_ext(env, RVH)) {
451             env->vsstatus = set_field(env->vsstatus,
452                                       MSTATUS64_SXL, env->misa_mxl);
453             env->vsstatus = set_field(env->vsstatus,
454                                       MSTATUS64_UXL, env->misa_mxl);
455             env->mstatus_hs = set_field(env->mstatus_hs,
456                                         MSTATUS64_SXL, env->misa_mxl);
457             env->mstatus_hs = set_field(env->mstatus_hs,
458                                         MSTATUS64_UXL, env->misa_mxl);
459         }
460     }
461     env->mcause = 0;
462     env->miclaim = MIP_SGEIP;
463     env->pc = env->resetvec;
464     env->bins = 0;
465     env->two_stage_lookup = false;
466 
467     /* Initialized default priorities of local interrupts. */
468     for (i = 0; i < ARRAY_SIZE(env->miprio); i++) {
469         iprio = riscv_cpu_default_priority(i);
470         env->miprio[i] = (i == IRQ_M_EXT) ? 0 : iprio;
471         env->siprio[i] = (i == IRQ_S_EXT) ? 0 : iprio;
472         env->hviprio[i] = 0;
473     }
474     i = 0;
475     while (!riscv_cpu_hviprio_index2irq(i, &irq, &rdzero)) {
476         if (!rdzero) {
477             env->hviprio[irq] = env->miprio[irq];
478         }
479         i++;
480     }
481     /* mmte is supposed to have pm.current hardwired to 1 */
482     env->mmte |= (PM_EXT_INITIAL | MMTE_M_PM_CURRENT);
483 #endif
484     env->xl = riscv_cpu_mxl(env);
485     riscv_cpu_update_mask(env);
486     cs->exception_index = RISCV_EXCP_NONE;
487     env->load_res = -1;
488     set_default_nan_mode(1, &env->fp_status);
489 
490 #ifndef CONFIG_USER_ONLY
491     if (riscv_feature(env, RISCV_FEATURE_DEBUG)) {
492         riscv_trigger_init(env);
493     }
494 
495     if (kvm_enabled()) {
496         kvm_riscv_reset_vcpu(cpu);
497     }
498 #endif
499 }
500 
501 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
502 {
503     RISCVCPU *cpu = RISCV_CPU(s);
504 
505     switch (riscv_cpu_mxl(&cpu->env)) {
506     case MXL_RV32:
507         info->print_insn = print_insn_riscv32;
508         break;
509     case MXL_RV64:
510         info->print_insn = print_insn_riscv64;
511         break;
512     case MXL_RV128:
513         info->print_insn = print_insn_riscv128;
514         break;
515     default:
516         g_assert_not_reached();
517     }
518 }
519 
520 static void riscv_cpu_realize(DeviceState *dev, Error **errp)
521 {
522     CPUState *cs = CPU(dev);
523     RISCVCPU *cpu = RISCV_CPU(dev);
524     CPURISCVState *env = &cpu->env;
525     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
526     CPUClass *cc = CPU_CLASS(mcc);
527     int priv_version = 0;
528     Error *local_err = NULL;
529 
530     cpu_exec_realizefn(cs, &local_err);
531     if (local_err != NULL) {
532         error_propagate(errp, local_err);
533         return;
534     }
535 
536     if (cpu->cfg.priv_spec) {
537         if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) {
538             priv_version = PRIV_VERSION_1_12_0;
539         } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
540             priv_version = PRIV_VERSION_1_11_0;
541         } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
542             priv_version = PRIV_VERSION_1_10_0;
543         } else {
544             error_setg(errp,
545                        "Unsupported privilege spec version '%s'",
546                        cpu->cfg.priv_spec);
547             return;
548         }
549     }
550 
551     if (priv_version) {
552         set_priv_version(env, priv_version);
553     } else if (!env->priv_ver) {
554         set_priv_version(env, PRIV_VERSION_1_12_0);
555     }
556 
557     if (cpu->cfg.mmu) {
558         riscv_set_feature(env, RISCV_FEATURE_MMU);
559     }
560 
561     if (cpu->cfg.pmp) {
562         riscv_set_feature(env, RISCV_FEATURE_PMP);
563 
564         /*
565          * Enhanced PMP should only be available
566          * on harts with PMP support
567          */
568         if (cpu->cfg.epmp) {
569             riscv_set_feature(env, RISCV_FEATURE_EPMP);
570         }
571     }
572 
573     if (cpu->cfg.aia) {
574         riscv_set_feature(env, RISCV_FEATURE_AIA);
575     }
576 
577     if (cpu->cfg.debug) {
578         riscv_set_feature(env, RISCV_FEATURE_DEBUG);
579     }
580 
581     set_resetvec(env, cpu->cfg.resetvec);
582 
583     /* Validate that MISA_MXL is set properly. */
584     switch (env->misa_mxl_max) {
585 #ifdef TARGET_RISCV64
586     case MXL_RV64:
587     case MXL_RV128:
588         cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
589         break;
590 #endif
591     case MXL_RV32:
592         cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
593         break;
594     default:
595         g_assert_not_reached();
596     }
597     assert(env->misa_mxl_max == env->misa_mxl);
598 
599     /* If only MISA_EXT is unset for misa, then set it from properties */
600     if (env->misa_ext == 0) {
601         uint32_t ext = 0;
602 
603         /* Do some ISA extension error checking */
604         if (cpu->cfg.ext_g && !(cpu->cfg.ext_i && cpu->cfg.ext_m &&
605                                 cpu->cfg.ext_a && cpu->cfg.ext_f &&
606                                 cpu->cfg.ext_d &&
607                                 cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) {
608             warn_report("Setting G will also set IMAFD_Zicsr_Zifencei");
609             cpu->cfg.ext_i = true;
610             cpu->cfg.ext_m = true;
611             cpu->cfg.ext_a = true;
612             cpu->cfg.ext_f = true;
613             cpu->cfg.ext_d = true;
614             cpu->cfg.ext_icsr = true;
615             cpu->cfg.ext_ifencei = true;
616         }
617 
618         if (cpu->cfg.ext_m && cpu->cfg.ext_zmmul) {
619             warn_report("Zmmul will override M");
620             cpu->cfg.ext_m = false;
621         }
622 
623         if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
624             error_setg(errp,
625                        "I and E extensions are incompatible");
626             return;
627         }
628 
629         if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
630             error_setg(errp,
631                        "Either I or E extension must be set");
632             return;
633         }
634 
635         if (cpu->cfg.ext_f && !cpu->cfg.ext_icsr) {
636             error_setg(errp, "F extension requires Zicsr");
637             return;
638         }
639 
640         if ((cpu->cfg.ext_zfh || cpu->cfg.ext_zfhmin) && !cpu->cfg.ext_f) {
641             error_setg(errp, "Zfh/Zfhmin extensions require F extension");
642             return;
643         }
644 
645         if (cpu->cfg.ext_d && !cpu->cfg.ext_f) {
646             error_setg(errp, "D extension requires F extension");
647             return;
648         }
649 
650         if (cpu->cfg.ext_v && !cpu->cfg.ext_d) {
651             error_setg(errp, "V extension requires D extension");
652             return;
653         }
654 
655         if ((cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) && !cpu->cfg.ext_f) {
656             error_setg(errp, "Zve32f/Zve64f extensions require F extension");
657             return;
658         }
659 
660         /* Set the ISA extensions, checks should have happened above */
661         if (cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinx ||
662             cpu->cfg.ext_zhinxmin) {
663             cpu->cfg.ext_zfinx = true;
664         }
665 
666         if (cpu->cfg.ext_zfinx) {
667             if (!cpu->cfg.ext_icsr) {
668                 error_setg(errp, "Zfinx extension requires Zicsr");
669                 return;
670             }
671             if (cpu->cfg.ext_f) {
672                 error_setg(errp,
673                     "Zfinx cannot be supported together with F extension");
674                 return;
675             }
676         }
677 
678         if (cpu->cfg.ext_zk) {
679             cpu->cfg.ext_zkn = true;
680             cpu->cfg.ext_zkr = true;
681             cpu->cfg.ext_zkt = true;
682         }
683 
684         if (cpu->cfg.ext_zkn) {
685             cpu->cfg.ext_zbkb = true;
686             cpu->cfg.ext_zbkc = true;
687             cpu->cfg.ext_zbkx = true;
688             cpu->cfg.ext_zkne = true;
689             cpu->cfg.ext_zknd = true;
690             cpu->cfg.ext_zknh = true;
691         }
692 
693         if (cpu->cfg.ext_zks) {
694             cpu->cfg.ext_zbkb = true;
695             cpu->cfg.ext_zbkc = true;
696             cpu->cfg.ext_zbkx = true;
697             cpu->cfg.ext_zksed = true;
698             cpu->cfg.ext_zksh = true;
699         }
700 
701         if (cpu->cfg.ext_i) {
702             ext |= RVI;
703         }
704         if (cpu->cfg.ext_e) {
705             ext |= RVE;
706         }
707         if (cpu->cfg.ext_m) {
708             ext |= RVM;
709         }
710         if (cpu->cfg.ext_a) {
711             ext |= RVA;
712         }
713         if (cpu->cfg.ext_f) {
714             ext |= RVF;
715         }
716         if (cpu->cfg.ext_d) {
717             ext |= RVD;
718         }
719         if (cpu->cfg.ext_c) {
720             ext |= RVC;
721         }
722         if (cpu->cfg.ext_s) {
723             ext |= RVS;
724         }
725         if (cpu->cfg.ext_u) {
726             ext |= RVU;
727         }
728         if (cpu->cfg.ext_h) {
729             ext |= RVH;
730         }
731         if (cpu->cfg.ext_v) {
732             int vext_version = VEXT_VERSION_1_00_0;
733             ext |= RVV;
734             if (!is_power_of_2(cpu->cfg.vlen)) {
735                 error_setg(errp,
736                         "Vector extension VLEN must be power of 2");
737                 return;
738             }
739             if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) {
740                 error_setg(errp,
741                         "Vector extension implementation only supports VLEN "
742                         "in the range [128, %d]", RV_VLEN_MAX);
743                 return;
744             }
745             if (!is_power_of_2(cpu->cfg.elen)) {
746                 error_setg(errp,
747                         "Vector extension ELEN must be power of 2");
748                 return;
749             }
750             if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) {
751                 error_setg(errp,
752                         "Vector extension implementation only supports ELEN "
753                         "in the range [8, 64]");
754                 return;
755             }
756             if (cpu->cfg.vext_spec) {
757                 if (!g_strcmp0(cpu->cfg.vext_spec, "v1.0")) {
758                     vext_version = VEXT_VERSION_1_00_0;
759                 } else {
760                     error_setg(errp,
761                            "Unsupported vector spec version '%s'",
762                            cpu->cfg.vext_spec);
763                     return;
764                 }
765             } else {
766                 qemu_log("vector version is not specified, "
767                          "use the default value v1.0\n");
768             }
769             set_vext_version(env, vext_version);
770         }
771         if (cpu->cfg.ext_j) {
772             ext |= RVJ;
773         }
774 
775         set_misa(env, env->misa_mxl, ext);
776     }
777 
778     riscv_cpu_register_gdb_regs_for_features(cs);
779 
780     qemu_init_vcpu(cs);
781     cpu_reset(cs);
782 
783     mcc->parent_realize(dev, errp);
784 }
785 
786 #ifndef CONFIG_USER_ONLY
787 static void riscv_cpu_set_irq(void *opaque, int irq, int level)
788 {
789     RISCVCPU *cpu = RISCV_CPU(opaque);
790     CPURISCVState *env = &cpu->env;
791 
792     if (irq < IRQ_LOCAL_MAX) {
793         switch (irq) {
794         case IRQ_U_SOFT:
795         case IRQ_S_SOFT:
796         case IRQ_VS_SOFT:
797         case IRQ_M_SOFT:
798         case IRQ_U_TIMER:
799         case IRQ_S_TIMER:
800         case IRQ_VS_TIMER:
801         case IRQ_M_TIMER:
802         case IRQ_U_EXT:
803         case IRQ_VS_EXT:
804         case IRQ_M_EXT:
805             if (kvm_enabled()) {
806                 kvm_riscv_set_irq(cpu, irq, level);
807             } else {
808                 riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
809             }
810              break;
811         case IRQ_S_EXT:
812             if (kvm_enabled()) {
813                 kvm_riscv_set_irq(cpu, irq, level);
814             } else {
815                 env->external_seip = level;
816                 riscv_cpu_update_mip(cpu, 1 << irq,
817                                      BOOL_TO_MASK(level | env->software_seip));
818             }
819             break;
820         default:
821             g_assert_not_reached();
822         }
823     } else if (irq < (IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX)) {
824         /* Require H-extension for handling guest local interrupts */
825         if (!riscv_has_ext(env, RVH)) {
826             g_assert_not_reached();
827         }
828 
829         /* Compute bit position in HGEIP CSR */
830         irq = irq - IRQ_LOCAL_MAX + 1;
831         if (env->geilen < irq) {
832             g_assert_not_reached();
833         }
834 
835         /* Update HGEIP CSR */
836         env->hgeip &= ~((target_ulong)1 << irq);
837         if (level) {
838             env->hgeip |= (target_ulong)1 << irq;
839         }
840 
841         /* Update mip.SGEIP bit */
842         riscv_cpu_update_mip(cpu, MIP_SGEIP,
843                              BOOL_TO_MASK(!!(env->hgeie & env->hgeip)));
844     } else {
845         g_assert_not_reached();
846     }
847 }
848 #endif /* CONFIG_USER_ONLY */
849 
850 static void riscv_cpu_init(Object *obj)
851 {
852     RISCVCPU *cpu = RISCV_CPU(obj);
853 
854     cpu->cfg.ext_counters = true;
855     cpu->cfg.ext_ifencei = true;
856     cpu->cfg.ext_icsr = true;
857     cpu->cfg.mmu = true;
858     cpu->cfg.pmp = true;
859 
860     cpu_set_cpustate_pointers(cpu);
861 
862 #ifndef CONFIG_USER_ONLY
863     qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq,
864                       IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX);
865 #endif /* CONFIG_USER_ONLY */
866 }
867 
868 static Property riscv_cpu_extensions[] = {
869     /* Defaults for standard extensions */
870     DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true),
871     DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false),
872     DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, false),
873     DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
874     DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true),
875     DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
876     DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
877     DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
878     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
879     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
880     DEFINE_PROP_BOOL("v", RISCVCPU, cfg.ext_v, false),
881     DEFINE_PROP_BOOL("h", RISCVCPU, cfg.ext_h, true),
882     DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
883     DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
884     DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
885     DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false),
886     DEFINE_PROP_BOOL("Zfhmin", RISCVCPU, cfg.ext_zfhmin, false),
887     DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false),
888     DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false),
889     DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
890     DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
891 
892     DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
893     DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec),
894     DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128),
895     DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64),
896 
897     DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false),
898     DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false),
899     DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false),
900 
901     DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true),
902     DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true),
903     DEFINE_PROP_BOOL("zbc", RISCVCPU, cfg.ext_zbc, true),
904     DEFINE_PROP_BOOL("zbkb", RISCVCPU, cfg.ext_zbkb, false),
905     DEFINE_PROP_BOOL("zbkc", RISCVCPU, cfg.ext_zbkc, false),
906     DEFINE_PROP_BOOL("zbkx", RISCVCPU, cfg.ext_zbkx, false),
907     DEFINE_PROP_BOOL("zbs", RISCVCPU, cfg.ext_zbs, true),
908     DEFINE_PROP_BOOL("zk", RISCVCPU, cfg.ext_zk, false),
909     DEFINE_PROP_BOOL("zkn", RISCVCPU, cfg.ext_zkn, false),
910     DEFINE_PROP_BOOL("zknd", RISCVCPU, cfg.ext_zknd, false),
911     DEFINE_PROP_BOOL("zkne", RISCVCPU, cfg.ext_zkne, false),
912     DEFINE_PROP_BOOL("zknh", RISCVCPU, cfg.ext_zknh, false),
913     DEFINE_PROP_BOOL("zkr", RISCVCPU, cfg.ext_zkr, false),
914     DEFINE_PROP_BOOL("zks", RISCVCPU, cfg.ext_zks, false),
915     DEFINE_PROP_BOOL("zksed", RISCVCPU, cfg.ext_zksed, false),
916     DEFINE_PROP_BOOL("zksh", RISCVCPU, cfg.ext_zksh, false),
917     DEFINE_PROP_BOOL("zkt", RISCVCPU, cfg.ext_zkt, false),
918 
919     DEFINE_PROP_BOOL("zdinx", RISCVCPU, cfg.ext_zdinx, false),
920     DEFINE_PROP_BOOL("zfinx", RISCVCPU, cfg.ext_zfinx, false),
921     DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false),
922     DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false),
923 
924     /* Vendor-specific custom extensions */
925     DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
926 
927     /* These are experimental so mark with 'x-' */
928     DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
929     DEFINE_PROP_BOOL("x-zmmul", RISCVCPU, cfg.ext_zmmul, false),
930     /* ePMP 0.9.3 */
931     DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
932     DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false),
933 
934     DEFINE_PROP_END_OF_LIST(),
935 };
936 
937 static void register_cpu_props(DeviceState *dev)
938 {
939     Property *prop;
940 
941     for (prop = riscv_cpu_extensions; prop && prop->name; prop++) {
942         qdev_property_add_static(dev, prop);
943     }
944 }
945 
946 static Property riscv_cpu_properties[] = {
947     DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true),
948 
949     DEFINE_PROP_UINT32("mvendorid", RISCVCPU, cfg.mvendorid, 0),
950     DEFINE_PROP_UINT64("marchid", RISCVCPU, cfg.marchid, RISCV_CPU_MARCHID),
951     DEFINE_PROP_UINT64("mimpid", RISCVCPU, cfg.mimpid, RISCV_CPU_MIMPID),
952 
953     DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC),
954 
955     DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false),
956 
957     DEFINE_PROP_BOOL("rvv_ta_all_1s", RISCVCPU, cfg.rvv_ta_all_1s, false),
958     DEFINE_PROP_END_OF_LIST(),
959 };
960 
961 static gchar *riscv_gdb_arch_name(CPUState *cs)
962 {
963     RISCVCPU *cpu = RISCV_CPU(cs);
964     CPURISCVState *env = &cpu->env;
965 
966     switch (riscv_cpu_mxl(env)) {
967     case MXL_RV32:
968         return g_strdup("riscv:rv32");
969     case MXL_RV64:
970     case MXL_RV128:
971         return g_strdup("riscv:rv64");
972     default:
973         g_assert_not_reached();
974     }
975 }
976 
977 static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
978 {
979     RISCVCPU *cpu = RISCV_CPU(cs);
980 
981     if (strcmp(xmlname, "riscv-csr.xml") == 0) {
982         return cpu->dyn_csr_xml;
983     } else if (strcmp(xmlname, "riscv-vector.xml") == 0) {
984         return cpu->dyn_vreg_xml;
985     }
986 
987     return NULL;
988 }
989 
990 #ifndef CONFIG_USER_ONLY
991 #include "hw/core/sysemu-cpu-ops.h"
992 
993 static const struct SysemuCPUOps riscv_sysemu_ops = {
994     .get_phys_page_debug = riscv_cpu_get_phys_page_debug,
995     .write_elf64_note = riscv_cpu_write_elf64_note,
996     .write_elf32_note = riscv_cpu_write_elf32_note,
997     .legacy_vmsd = &vmstate_riscv_cpu,
998 };
999 #endif
1000 
1001 #include "hw/core/tcg-cpu-ops.h"
1002 
1003 static const struct TCGCPUOps riscv_tcg_ops = {
1004     .initialize = riscv_translate_init,
1005     .synchronize_from_tb = riscv_cpu_synchronize_from_tb,
1006 
1007 #ifndef CONFIG_USER_ONLY
1008     .tlb_fill = riscv_cpu_tlb_fill,
1009     .cpu_exec_interrupt = riscv_cpu_exec_interrupt,
1010     .do_interrupt = riscv_cpu_do_interrupt,
1011     .do_transaction_failed = riscv_cpu_do_transaction_failed,
1012     .do_unaligned_access = riscv_cpu_do_unaligned_access,
1013     .debug_excp_handler = riscv_cpu_debug_excp_handler,
1014     .debug_check_breakpoint = riscv_cpu_debug_check_breakpoint,
1015     .debug_check_watchpoint = riscv_cpu_debug_check_watchpoint,
1016 #endif /* !CONFIG_USER_ONLY */
1017 };
1018 
1019 static void riscv_cpu_class_init(ObjectClass *c, void *data)
1020 {
1021     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
1022     CPUClass *cc = CPU_CLASS(c);
1023     DeviceClass *dc = DEVICE_CLASS(c);
1024 
1025     device_class_set_parent_realize(dc, riscv_cpu_realize,
1026                                     &mcc->parent_realize);
1027 
1028     device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
1029 
1030     cc->class_by_name = riscv_cpu_class_by_name;
1031     cc->has_work = riscv_cpu_has_work;
1032     cc->dump_state = riscv_cpu_dump_state;
1033     cc->set_pc = riscv_cpu_set_pc;
1034     cc->gdb_read_register = riscv_cpu_gdb_read_register;
1035     cc->gdb_write_register = riscv_cpu_gdb_write_register;
1036     cc->gdb_num_core_regs = 33;
1037     cc->gdb_stop_before_watchpoint = true;
1038     cc->disas_set_info = riscv_cpu_disas_set_info;
1039 #ifndef CONFIG_USER_ONLY
1040     cc->sysemu_ops = &riscv_sysemu_ops;
1041 #endif
1042     cc->gdb_arch_name = riscv_gdb_arch_name;
1043     cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml;
1044     cc->tcg_ops = &riscv_tcg_ops;
1045 
1046     device_class_set_props(dc, riscv_cpu_properties);
1047 }
1048 
1049 #define ISA_EDATA_ENTRY(name, prop) {#name, cpu->cfg.prop}
1050 
1051 static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int max_str_len)
1052 {
1053     char *old = *isa_str;
1054     char *new = *isa_str;
1055     int i;
1056 
1057     /**
1058      * Here are the ordering rules of extension naming defined by RISC-V
1059      * specification :
1060      * 1. All extensions should be separated from other multi-letter extensions
1061      *    by an underscore.
1062      * 2. The first letter following the 'Z' conventionally indicates the most
1063      *    closely related alphabetical extension category, IMAFDQLCBKJTPVH.
1064      *    If multiple 'Z' extensions are named, they should be ordered first
1065      *    by category, then alphabetically within a category.
1066      * 3. Standard supervisor-level extensions (starts with 'S') should be
1067      *    listed after standard unprivileged extensions.  If multiple
1068      *    supervisor-level extensions are listed, they should be ordered
1069      *    alphabetically.
1070      * 4. Non-standard extensions (starts with 'X') must be listed after all
1071      *    standard extensions. They must be separated from other multi-letter
1072      *    extensions by an underscore.
1073      */
1074     struct isa_ext_data isa_edata_arr[] = {
1075         ISA_EDATA_ENTRY(zicsr, ext_icsr),
1076         ISA_EDATA_ENTRY(zifencei, ext_ifencei),
1077         ISA_EDATA_ENTRY(zmmul, ext_zmmul),
1078         ISA_EDATA_ENTRY(zfh, ext_zfh),
1079         ISA_EDATA_ENTRY(zfhmin, ext_zfhmin),
1080         ISA_EDATA_ENTRY(zfinx, ext_zfinx),
1081         ISA_EDATA_ENTRY(zdinx, ext_zdinx),
1082         ISA_EDATA_ENTRY(zba, ext_zba),
1083         ISA_EDATA_ENTRY(zbb, ext_zbb),
1084         ISA_EDATA_ENTRY(zbc, ext_zbc),
1085         ISA_EDATA_ENTRY(zbkb, ext_zbkb),
1086         ISA_EDATA_ENTRY(zbkc, ext_zbkc),
1087         ISA_EDATA_ENTRY(zbkx, ext_zbkx),
1088         ISA_EDATA_ENTRY(zbs, ext_zbs),
1089         ISA_EDATA_ENTRY(zk, ext_zk),
1090         ISA_EDATA_ENTRY(zkn, ext_zkn),
1091         ISA_EDATA_ENTRY(zknd, ext_zknd),
1092         ISA_EDATA_ENTRY(zkne, ext_zkne),
1093         ISA_EDATA_ENTRY(zknh, ext_zknh),
1094         ISA_EDATA_ENTRY(zkr, ext_zkr),
1095         ISA_EDATA_ENTRY(zks, ext_zks),
1096         ISA_EDATA_ENTRY(zksed, ext_zksed),
1097         ISA_EDATA_ENTRY(zksh, ext_zksh),
1098         ISA_EDATA_ENTRY(zkt, ext_zkt),
1099         ISA_EDATA_ENTRY(zve32f, ext_zve32f),
1100         ISA_EDATA_ENTRY(zve64f, ext_zve64f),
1101         ISA_EDATA_ENTRY(zhinx, ext_zhinx),
1102         ISA_EDATA_ENTRY(zhinxmin, ext_zhinxmin),
1103         ISA_EDATA_ENTRY(svinval, ext_svinval),
1104         ISA_EDATA_ENTRY(svnapot, ext_svnapot),
1105         ISA_EDATA_ENTRY(svpbmt, ext_svpbmt),
1106     };
1107 
1108     for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
1109         if (isa_edata_arr[i].enabled) {
1110             new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL);
1111             g_free(old);
1112             old = new;
1113         }
1114     }
1115 
1116     *isa_str = new;
1117 }
1118 
1119 char *riscv_isa_string(RISCVCPU *cpu)
1120 {
1121     int i;
1122     const size_t maxlen = sizeof("rv128") + sizeof(riscv_single_letter_exts);
1123     char *isa_str = g_new(char, maxlen);
1124     char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
1125     for (i = 0; i < sizeof(riscv_single_letter_exts) - 1; i++) {
1126         if (cpu->env.misa_ext & RV(riscv_single_letter_exts[i])) {
1127             *p++ = qemu_tolower(riscv_single_letter_exts[i]);
1128         }
1129     }
1130     *p = '\0';
1131     if (!cpu->cfg.short_isa_string) {
1132         riscv_isa_string_ext(cpu, &isa_str, maxlen);
1133     }
1134     return isa_str;
1135 }
1136 
1137 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
1138 {
1139     ObjectClass *class_a = (ObjectClass *)a;
1140     ObjectClass *class_b = (ObjectClass *)b;
1141     const char *name_a, *name_b;
1142 
1143     name_a = object_class_get_name(class_a);
1144     name_b = object_class_get_name(class_b);
1145     return strcmp(name_a, name_b);
1146 }
1147 
1148 static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
1149 {
1150     const char *typename = object_class_get_name(OBJECT_CLASS(data));
1151     int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
1152 
1153     qemu_printf("%.*s\n", len, typename);
1154 }
1155 
1156 void riscv_cpu_list(void)
1157 {
1158     GSList *list;
1159 
1160     list = object_class_get_list(TYPE_RISCV_CPU, false);
1161     list = g_slist_sort(list, riscv_cpu_list_compare);
1162     g_slist_foreach(list, riscv_cpu_list_entry, NULL);
1163     g_slist_free(list);
1164 }
1165 
1166 #define DEFINE_CPU(type_name, initfn)      \
1167     {                                      \
1168         .name = type_name,                 \
1169         .parent = TYPE_RISCV_CPU,          \
1170         .instance_init = initfn            \
1171     }
1172 
1173 static const TypeInfo riscv_cpu_type_infos[] = {
1174     {
1175         .name = TYPE_RISCV_CPU,
1176         .parent = TYPE_CPU,
1177         .instance_size = sizeof(RISCVCPU),
1178         .instance_align = __alignof__(RISCVCPU),
1179         .instance_init = riscv_cpu_init,
1180         .abstract = true,
1181         .class_size = sizeof(RISCVCPUClass),
1182         .class_init = riscv_cpu_class_init,
1183     },
1184     DEFINE_CPU(TYPE_RISCV_CPU_ANY,              riscv_any_cpu_init),
1185 #if defined(CONFIG_KVM)
1186     DEFINE_CPU(TYPE_RISCV_CPU_HOST,             riscv_host_cpu_init),
1187 #endif
1188 #if defined(TARGET_RISCV32)
1189     DEFINE_CPU(TYPE_RISCV_CPU_BASE32,           rv32_base_cpu_init),
1190     DEFINE_CPU(TYPE_RISCV_CPU_IBEX,             rv32_ibex_cpu_init),
1191     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31,       rv32_sifive_e_cpu_init),
1192     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34,       rv32_imafcu_nommu_cpu_init),
1193     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34,       rv32_sifive_u_cpu_init),
1194 #elif defined(TARGET_RISCV64)
1195     DEFINE_CPU(TYPE_RISCV_CPU_BASE64,           rv64_base_cpu_init),
1196     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51,       rv64_sifive_e_cpu_init),
1197     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54,       rv64_sifive_u_cpu_init),
1198     DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C,         rv64_sifive_u_cpu_init),
1199     DEFINE_CPU(TYPE_RISCV_CPU_BASE128,          rv128_base_cpu_init),
1200 #endif
1201 };
1202 
1203 DEFINE_TYPES(riscv_cpu_type_infos)
1204