blob: 42b5631c7c629698952107ce182f56dbc81573ac [file] [log] [blame]
Andreas Färberdd83b062012-01-28 16:39:52 +01001/*
2 * QEMU CPU model
3 *
Andreas Färber1590bbc2014-03-03 23:33:51 +01004 * Copyright (c) 2012-2014 SUSE LINUX Products GmbH
Andreas Färberdd83b062012-01-28 16:39:52 +01005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see
18 * <http://www.gnu.org/licenses/gpl-2.0.html>
19 */
20
Peter Maydell1ef26b12016-02-23 11:58:02 +000021#include "qemu/osdep.h"
Markus Armbrusterda34e652016-03-14 09:01:28 +010022#include "qapi/error.h"
Andreas Färberdd83b062012-01-28 16:39:52 +010023#include "qemu-common.h"
Andreas Färber878096e2013-05-27 01:33:50 +020024#include "qom/cpu.h"
Igor Mammedov13eed942013-04-23 10:29:36 +020025#include "sysemu/kvm.h"
Igor Mammedov066e9b22013-04-23 10:29:39 +020026#include "qemu/notify.h"
Andreas Färber91b1df82013-06-16 07:49:48 +020027#include "qemu/log.h"
Paolo Bonzini508127e2016-01-07 16:55:28 +030028#include "exec/log.h"
Andreas Färber92626852014-03-04 03:17:10 +010029#include "qemu/error-report.h"
Igor Mammedov066e9b22013-04-23 10:29:39 +020030#include "sysemu/sysemu.h"
Igor Mammedov62a48a22016-06-09 19:11:01 +020031#include "hw/qdev-properties.h"
Igor Mammedov066e9b22013-04-23 10:29:39 +020032
Igor Mammedov69e5ff02013-04-25 16:05:24 +020033bool cpu_exists(int64_t id)
34{
Andreas Färber38fcbd32013-07-07 19:50:23 +020035 CPUState *cpu;
Igor Mammedov69e5ff02013-04-25 16:05:24 +020036
Andreas Färber38fcbd32013-07-07 19:50:23 +020037 CPU_FOREACH(cpu) {
38 CPUClass *cc = CPU_GET_CLASS(cpu);
39
40 if (cc->get_arch_id(cpu) == id) {
41 return true;
42 }
43 }
44 return false;
Igor Mammedov69e5ff02013-04-25 16:05:24 +020045}
46
Andreas Färber92626852014-03-04 03:17:10 +010047CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
48{
49 char *str, *name, *featurestr;
Igor Mammedov62a48a22016-06-09 19:11:01 +020050 CPUState *cpu = NULL;
Andreas Färber92626852014-03-04 03:17:10 +010051 ObjectClass *oc;
52 CPUClass *cc;
53 Error *err = NULL;
54
55 str = g_strdup(cpu_model);
56 name = strtok(str, ",");
57
58 oc = cpu_class_by_name(typename, name);
59 if (oc == NULL) {
60 g_free(str);
61 return NULL;
62 }
63
Igor Mammedov62a48a22016-06-09 19:11:01 +020064 cc = CPU_CLASS(oc);
Andreas Färber92626852014-03-04 03:17:10 +010065 featurestr = strtok(NULL, ",");
Igor Mammedov62a48a22016-06-09 19:11:01 +020066 /* TODO: all callers of cpu_generic_init() need to be converted to
67 * call parse_features() only once, before calling cpu_generic_init().
68 */
69 cc->parse_features(object_class_get_name(oc), featurestr, &err);
Andreas Färber92626852014-03-04 03:17:10 +010070 g_free(str);
71 if (err != NULL) {
72 goto out;
73 }
74
Igor Mammedov62a48a22016-06-09 19:11:01 +020075 cpu = CPU(object_new(object_class_get_name(oc)));
Andreas Färber92626852014-03-04 03:17:10 +010076 object_property_set_bool(OBJECT(cpu), true, "realized", &err);
77
78out:
79 if (err != NULL) {
Markus Armbruster565f65d2015-02-12 13:55:05 +010080 error_report_err(err);
Andreas Färber92626852014-03-04 03:17:10 +010081 object_unref(OBJECT(cpu));
82 return NULL;
83 }
84
85 return cpu;
86}
87
Andreas Färber444d5592013-05-28 13:28:38 +020088bool cpu_paging_enabled(const CPUState *cpu)
89{
90 CPUClass *cc = CPU_GET_CLASS(cpu);
91
92 return cc->get_paging_enabled(cpu);
93}
94
95static bool cpu_common_get_paging_enabled(const CPUState *cpu)
96{
Andreas Färber6db297e2013-06-09 16:03:46 +020097 return false;
Andreas Färber444d5592013-05-28 13:28:38 +020098}
99
Andreas Färbera23bbfd2013-05-28 13:52:01 +0200100void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
101 Error **errp)
102{
103 CPUClass *cc = CPU_GET_CLASS(cpu);
104
Stefan Weilfbe95bf2015-03-08 19:23:32 +0100105 cc->get_memory_mapping(cpu, list, errp);
Andreas Färbera23bbfd2013-05-28 13:52:01 +0200106}
107
108static void cpu_common_get_memory_mapping(CPUState *cpu,
109 MemoryMappingList *list,
110 Error **errp)
111{
112 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
113}
114
Andreas Färberd8ed8872013-01-17 22:30:20 +0100115void cpu_reset_interrupt(CPUState *cpu, int mask)
116{
117 cpu->interrupt_request &= ~mask;
118}
119
Andreas Färber60a3e172013-05-17 18:26:54 +0200120void cpu_exit(CPUState *cpu)
121{
122 cpu->exit_request = 1;
Paolo Bonziniab096a72015-08-18 06:34:19 -0700123 /* Ensure cpu_exec will see the exit request after TCG has exited. */
124 smp_wmb();
Andreas Färber60a3e172013-05-17 18:26:54 +0200125 cpu->tcg_exit_req = 1;
126}
127
Jens Freimannc72bf462013-04-19 16:45:06 +0200128int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
129 void *opaque)
130{
131 CPUClass *cc = CPU_GET_CLASS(cpu);
132
133 return (*cc->write_elf32_qemunote)(f, cpu, opaque);
134}
135
136static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,
137 CPUState *cpu, void *opaque)
138{
Andrew Jonesb09afd52016-01-11 20:56:19 +0100139 return 0;
Jens Freimannc72bf462013-04-19 16:45:06 +0200140}
141
142int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
143 int cpuid, void *opaque)
144{
145 CPUClass *cc = CPU_GET_CLASS(cpu);
146
147 return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
148}
149
150static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,
151 CPUState *cpu, int cpuid,
152 void *opaque)
153{
154 return -1;
155}
156
157int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
158 void *opaque)
159{
160 CPUClass *cc = CPU_GET_CLASS(cpu);
161
162 return (*cc->write_elf64_qemunote)(f, cpu, opaque);
163}
164
165static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,
166 CPUState *cpu, void *opaque)
167{
Andrew Jonesb09afd52016-01-11 20:56:19 +0100168 return 0;
Jens Freimannc72bf462013-04-19 16:45:06 +0200169}
170
171int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
172 int cpuid, void *opaque)
173{
174 CPUClass *cc = CPU_GET_CLASS(cpu);
175
176 return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
177}
178
179static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,
180 CPUState *cpu, int cpuid,
181 void *opaque)
182{
183 return -1;
184}
185
186
Andreas Färber5b50e792013-06-29 04:18:45 +0200187static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg)
188{
189 return 0;
190}
191
192static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
193{
194 return 0;
195}
196
Sergey Fedorov568496c2016-02-11 11:17:32 +0000197static bool cpu_common_debug_check_watchpoint(CPUState *cpu, CPUWatchpoint *wp)
198{
199 /* If no extra check is required, QEMU watchpoint match can be considered
200 * as an architectural match.
201 */
202 return true;
203}
204
Greg Kurzbf7663c2014-06-24 19:33:21 +0200205bool target_words_bigendian(void);
206static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
207{
208 return target_words_bigendian();
209}
Andreas Färber5b50e792013-06-29 04:18:45 +0200210
Richard Hendersoncffe7b32014-09-13 09:45:12 -0700211static void cpu_common_noop(CPUState *cpu)
Peter Maydell86025ee2014-09-12 14:06:48 +0100212{
213}
214
Richard Henderson9585db62014-09-13 09:45:17 -0700215static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
216{
217 return false;
218}
219
Andreas Färber878096e2013-05-27 01:33:50 +0200220void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
221 int flags)
222{
223 CPUClass *cc = CPU_GET_CLASS(cpu);
224
225 if (cc->dump_state) {
James Hogan97577fd2013-08-27 12:19:10 +0100226 cpu_synchronize_state(cpu);
Andreas Färber878096e2013-05-27 01:33:50 +0200227 cc->dump_state(cpu, f, cpu_fprintf, flags);
228 }
229}
230
231void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
232 int flags)
233{
234 CPUClass *cc = CPU_GET_CLASS(cpu);
235
236 if (cc->dump_statistics) {
237 cc->dump_statistics(cpu, f, cpu_fprintf, flags);
238 }
239}
240
Andreas Färberdd83b062012-01-28 16:39:52 +0100241void cpu_reset(CPUState *cpu)
242{
243 CPUClass *klass = CPU_GET_CLASS(cpu);
244
245 if (klass->reset != NULL) {
246 (*klass->reset)(cpu);
247 }
248}
249
250static void cpu_common_reset(CPUState *cpu)
251{
Andreas Färber91b1df82013-06-16 07:49:48 +0200252 CPUClass *cc = CPU_GET_CLASS(cpu);
253
254 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
255 qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
256 log_cpu_state(cpu, cc->reset_dump_flags);
257 }
258
Andreas Färber259186a2013-01-17 18:51:17 +0100259 cpu->interrupt_request = 0;
Andreas Färber259186a2013-01-17 18:51:17 +0100260 cpu->halted = 0;
Andreas Färber93afead2013-08-26 03:41:01 +0200261 cpu->mem_io_pc = 0;
262 cpu->mem_io_vaddr = 0;
Andreas Färberefee7342013-08-26 05:39:29 +0200263 cpu->icount_extra = 0;
Andreas Färber28ecfd72013-08-26 05:51:49 +0200264 cpu->icount_decr.u32 = 0;
Paolo Bonzini414b15c2015-06-24 14:16:26 +0200265 cpu->can_do_io = 1;
Paolo Bonzinif9d8f662014-12-19 12:53:13 +0100266 cpu->exception_index = -1;
Andrey Smetaninbac05aa2015-07-03 15:01:44 +0300267 cpu->crash_occurred = false;
Andreas Färber8cd70432013-08-26 06:03:38 +0200268 memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
Andreas Färberdd83b062012-01-28 16:39:52 +0100269}
270
Andreas Färber8c2e1b02013-08-25 18:53:55 +0200271static bool cpu_common_has_work(CPUState *cs)
272{
273 return false;
274}
275
Andreas Färber2b8c2752013-01-21 18:26:21 +0100276ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
277{
278 CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
279
280 return cc->class_by_name(cpu_model);
281}
282
283static ObjectClass *cpu_common_class_by_name(const char *cpu_model)
284{
285 return NULL;
286}
287
Igor Mammedov62a48a22016-06-09 19:11:01 +0200288static void cpu_common_parse_features(const char *typename, char *features,
Andreas Färber1590bbc2014-03-03 23:33:51 +0100289 Error **errp)
290{
291 char *featurestr; /* Single "key=value" string being parsed */
292 char *val;
Igor Mammedov62a48a22016-06-09 19:11:01 +0200293 static bool cpu_globals_initialized;
294
295 /* TODO: all callers of ->parse_features() need to be changed to
296 * call it only once, so we can remove this check (or change it
297 * to assert(!cpu_globals_initialized).
298 * Current callers of ->parse_features() are:
Igor Mammedov62a48a22016-06-09 19:11:01 +0200299 * - cpu_generic_init()
Igor Mammedov62a48a22016-06-09 19:11:01 +0200300 */
301 if (cpu_globals_initialized) {
302 return;
303 }
304 cpu_globals_initialized = true;
Andreas Färber1590bbc2014-03-03 23:33:51 +0100305
306 featurestr = features ? strtok(features, ",") : NULL;
307
308 while (featurestr) {
309 val = strchr(featurestr, '=');
310 if (val) {
Igor Mammedov62a48a22016-06-09 19:11:01 +0200311 GlobalProperty *prop = g_new0(typeof(*prop), 1);
Andreas Färber1590bbc2014-03-03 23:33:51 +0100312 *val = 0;
313 val++;
Igor Mammedov62a48a22016-06-09 19:11:01 +0200314 prop->driver = typename;
315 prop->property = g_strdup(featurestr);
316 prop->value = g_strdup(val);
317 prop->errp = &error_fatal;
318 qdev_prop_register_global(prop);
Andreas Färber1590bbc2014-03-03 23:33:51 +0100319 } else {
320 error_setg(errp, "Expected key=value format, found %s.",
321 featurestr);
322 return;
323 }
324 featurestr = strtok(NULL, ",");
325 }
326}
327
Andreas Färber4f658092013-01-19 06:17:06 +0100328static void cpu_common_realizefn(DeviceState *dev, Error **errp)
329{
Igor Mammedov13eed942013-04-23 10:29:36 +0200330 CPUState *cpu = CPU(dev);
331
332 if (dev->hotplugged) {
333 cpu_synchronize_post_init(cpu);
Igor Mammedov6afb4722013-04-23 10:29:38 +0200334 cpu_resume(cpu);
Igor Mammedov13eed942013-04-23 10:29:36 +0200335 }
Andreas Färber4f658092013-01-19 06:17:06 +0100336}
337
Andreas Färbera0e372f2013-06-28 23:18:47 +0200338static void cpu_common_initfn(Object *obj)
339{
340 CPUState *cpu = CPU(obj);
341 CPUClass *cc = CPU_GET_CLASS(obj);
342
Bharata B Raob7bca732015-06-23 19:31:13 -0700343 cpu->cpu_index = -1;
Andreas Färber35143f02013-08-12 18:09:47 +0200344 cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs;
Paolo Bonzini376692b2015-07-10 12:32:32 +0200345 qemu_mutex_init(&cpu->work_mutex);
Eduardo Habkost7c391632015-04-27 17:00:32 -0300346 QTAILQ_INIT(&cpu->breakpoints);
347 QTAILQ_INIT(&cpu->watchpoints);
Lluís Vilanova48151852016-07-11 12:53:41 +0200348 bitmap_zero(cpu->trace_dstate, TRACE_VCPU_EVENT_COUNT);
Andreas Färbera0e372f2013-06-28 23:18:47 +0200349}
350
Bharata B Raob7bca732015-06-23 19:31:13 -0700351static void cpu_common_finalize(Object *obj)
352{
353 cpu_exec_exit(CPU(obj));
354}
355
Igor Mammedov997395d2013-04-23 10:29:41 +0200356static int64_t cpu_common_get_arch_id(CPUState *cpu)
357{
358 return cpu->cpu_index;
359}
360
Andreas Färberdd83b062012-01-28 16:39:52 +0100361static void cpu_class_init(ObjectClass *klass, void *data)
362{
Eduardo Habkost961f8392012-12-05 14:49:13 -0200363 DeviceClass *dc = DEVICE_CLASS(klass);
Andreas Färberdd83b062012-01-28 16:39:52 +0100364 CPUClass *k = CPU_CLASS(klass);
365
Andreas Färber2b8c2752013-01-21 18:26:21 +0100366 k->class_by_name = cpu_common_class_by_name;
Andreas Färber1590bbc2014-03-03 23:33:51 +0100367 k->parse_features = cpu_common_parse_features;
Andreas Färberdd83b062012-01-28 16:39:52 +0100368 k->reset = cpu_common_reset;
Igor Mammedov997395d2013-04-23 10:29:41 +0200369 k->get_arch_id = cpu_common_get_arch_id;
Andreas Färber8c2e1b02013-08-25 18:53:55 +0200370 k->has_work = cpu_common_has_work;
Andreas Färber444d5592013-05-28 13:28:38 +0200371 k->get_paging_enabled = cpu_common_get_paging_enabled;
Andreas Färbera23bbfd2013-05-28 13:52:01 +0200372 k->get_memory_mapping = cpu_common_get_memory_mapping;
Jens Freimannc72bf462013-04-19 16:45:06 +0200373 k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;
374 k->write_elf32_note = cpu_common_write_elf32_note;
375 k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;
376 k->write_elf64_note = cpu_common_write_elf64_note;
Andreas Färber5b50e792013-06-29 04:18:45 +0200377 k->gdb_read_register = cpu_common_gdb_read_register;
378 k->gdb_write_register = cpu_common_gdb_write_register;
Greg Kurzbf7663c2014-06-24 19:33:21 +0200379 k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
Richard Hendersoncffe7b32014-09-13 09:45:12 -0700380 k->debug_excp_handler = cpu_common_noop;
Sergey Fedorov568496c2016-02-11 11:17:32 +0000381 k->debug_check_watchpoint = cpu_common_debug_check_watchpoint;
Richard Hendersoncffe7b32014-09-13 09:45:12 -0700382 k->cpu_exec_enter = cpu_common_noop;
383 k->cpu_exec_exit = cpu_common_noop;
Richard Henderson9585db62014-09-13 09:45:17 -0700384 k->cpu_exec_interrupt = cpu_common_exec_interrupt;
Andreas Färber4f658092013-01-19 06:17:06 +0100385 dc->realize = cpu_common_realizefn;
Markus Armbrusterffa95712013-11-28 17:26:56 +0100386 /*
387 * Reason: CPUs still need special care by board code: wiring up
388 * IRQs, adding reset handlers, halting non-first CPUs, ...
389 */
390 dc->cannot_instantiate_with_device_add_yet = true;
Andreas Färberdd83b062012-01-28 16:39:52 +0100391}
392
Eduardo Habkost961f8392012-12-05 14:49:13 -0200393static const TypeInfo cpu_type_info = {
Andreas Färberdd83b062012-01-28 16:39:52 +0100394 .name = TYPE_CPU,
Eduardo Habkost961f8392012-12-05 14:49:13 -0200395 .parent = TYPE_DEVICE,
Andreas Färberdd83b062012-01-28 16:39:52 +0100396 .instance_size = sizeof(CPUState),
Andreas Färbera0e372f2013-06-28 23:18:47 +0200397 .instance_init = cpu_common_initfn,
Bharata B Raob7bca732015-06-23 19:31:13 -0700398 .instance_finalize = cpu_common_finalize,
Andreas Färberdd83b062012-01-28 16:39:52 +0100399 .abstract = true,
400 .class_size = sizeof(CPUClass),
401 .class_init = cpu_class_init,
402};
403
404static void cpu_register_types(void)
405{
406 type_register_static(&cpu_type_info);
407}
408
409type_init(cpu_register_types)