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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
Andreas Färberdd83b062012-01-28 16:39:52 +010021#include "qemu-common.h"
Andreas Färber878096e2013-05-27 01:33:50 +020022#include "qom/cpu.h"
Igor Mammedov13eed942013-04-23 10:29:36 +020023#include "sysemu/kvm.h"
Igor Mammedov066e9b22013-04-23 10:29:39 +020024#include "qemu/notify.h"
Andreas Färber91b1df82013-06-16 07:49:48 +020025#include "qemu/log.h"
Andreas Färber92626852014-03-04 03:17:10 +010026#include "qemu/error-report.h"
Igor Mammedov066e9b22013-04-23 10:29:39 +020027#include "sysemu/sysemu.h"
28
Igor Mammedov69e5ff02013-04-25 16:05:24 +020029bool cpu_exists(int64_t id)
30{
Andreas Färber38fcbd32013-07-07 19:50:23 +020031 CPUState *cpu;
Igor Mammedov69e5ff02013-04-25 16:05:24 +020032
Andreas Färber38fcbd32013-07-07 19:50:23 +020033 CPU_FOREACH(cpu) {
34 CPUClass *cc = CPU_GET_CLASS(cpu);
35
36 if (cc->get_arch_id(cpu) == id) {
37 return true;
38 }
39 }
40 return false;
Igor Mammedov69e5ff02013-04-25 16:05:24 +020041}
42
Andreas Färber92626852014-03-04 03:17:10 +010043CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
44{
45 char *str, *name, *featurestr;
46 CPUState *cpu;
47 ObjectClass *oc;
48 CPUClass *cc;
49 Error *err = NULL;
50
51 str = g_strdup(cpu_model);
52 name = strtok(str, ",");
53
54 oc = cpu_class_by_name(typename, name);
55 if (oc == NULL) {
56 g_free(str);
57 return NULL;
58 }
59
60 cpu = CPU(object_new(object_class_get_name(oc)));
61 cc = CPU_GET_CLASS(cpu);
62
63 featurestr = strtok(NULL, ",");
64 cc->parse_features(cpu, featurestr, &err);
65 g_free(str);
66 if (err != NULL) {
67 goto out;
68 }
69
70 object_property_set_bool(OBJECT(cpu), true, "realized", &err);
71
72out:
73 if (err != NULL) {
Markus Armbruster565f65d2015-02-12 13:55:05 +010074 error_report_err(err);
Andreas Färber92626852014-03-04 03:17:10 +010075 object_unref(OBJECT(cpu));
76 return NULL;
77 }
78
79 return cpu;
80}
81
Andreas Färber444d5592013-05-28 13:28:38 +020082bool cpu_paging_enabled(const CPUState *cpu)
83{
84 CPUClass *cc = CPU_GET_CLASS(cpu);
85
86 return cc->get_paging_enabled(cpu);
87}
88
89static bool cpu_common_get_paging_enabled(const CPUState *cpu)
90{
Andreas Färber6db297e2013-06-09 16:03:46 +020091 return false;
Andreas Färber444d5592013-05-28 13:28:38 +020092}
93
Andreas Färbera23bbfd2013-05-28 13:52:01 +020094void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
95 Error **errp)
96{
97 CPUClass *cc = CPU_GET_CLASS(cpu);
98
Stefan Weilfbe95bf2015-03-08 19:23:32 +010099 cc->get_memory_mapping(cpu, list, errp);
Andreas Färbera23bbfd2013-05-28 13:52:01 +0200100}
101
102static void cpu_common_get_memory_mapping(CPUState *cpu,
103 MemoryMappingList *list,
104 Error **errp)
105{
106 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
107}
108
Andreas Färberd8ed8872013-01-17 22:30:20 +0100109void cpu_reset_interrupt(CPUState *cpu, int mask)
110{
111 cpu->interrupt_request &= ~mask;
112}
113
Andreas Färber60a3e172013-05-17 18:26:54 +0200114void cpu_exit(CPUState *cpu)
115{
116 cpu->exit_request = 1;
117 cpu->tcg_exit_req = 1;
118}
119
Jens Freimannc72bf462013-04-19 16:45:06 +0200120int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
121 void *opaque)
122{
123 CPUClass *cc = CPU_GET_CLASS(cpu);
124
125 return (*cc->write_elf32_qemunote)(f, cpu, opaque);
126}
127
128static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,
129 CPUState *cpu, void *opaque)
130{
131 return -1;
132}
133
134int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
135 int cpuid, void *opaque)
136{
137 CPUClass *cc = CPU_GET_CLASS(cpu);
138
139 return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
140}
141
142static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,
143 CPUState *cpu, int cpuid,
144 void *opaque)
145{
146 return -1;
147}
148
149int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
150 void *opaque)
151{
152 CPUClass *cc = CPU_GET_CLASS(cpu);
153
154 return (*cc->write_elf64_qemunote)(f, cpu, opaque);
155}
156
157static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,
158 CPUState *cpu, void *opaque)
159{
160 return -1;
161}
162
163int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
164 int cpuid, void *opaque)
165{
166 CPUClass *cc = CPU_GET_CLASS(cpu);
167
168 return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
169}
170
171static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,
172 CPUState *cpu, int cpuid,
173 void *opaque)
174{
175 return -1;
176}
177
178
Andreas Färber5b50e792013-06-29 04:18:45 +0200179static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg)
180{
181 return 0;
182}
183
184static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
185{
186 return 0;
187}
188
Greg Kurzbf7663c2014-06-24 19:33:21 +0200189bool target_words_bigendian(void);
190static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
191{
192 return target_words_bigendian();
193}
Andreas Färber5b50e792013-06-29 04:18:45 +0200194
Richard Hendersoncffe7b32014-09-13 09:45:12 -0700195static void cpu_common_noop(CPUState *cpu)
Peter Maydell86025ee2014-09-12 14:06:48 +0100196{
197}
198
Richard Henderson9585db62014-09-13 09:45:17 -0700199static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
200{
201 return false;
202}
203
Andreas Färber878096e2013-05-27 01:33:50 +0200204void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
205 int flags)
206{
207 CPUClass *cc = CPU_GET_CLASS(cpu);
208
209 if (cc->dump_state) {
James Hogan97577fd2013-08-27 12:19:10 +0100210 cpu_synchronize_state(cpu);
Andreas Färber878096e2013-05-27 01:33:50 +0200211 cc->dump_state(cpu, f, cpu_fprintf, flags);
212 }
213}
214
215void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
216 int flags)
217{
218 CPUClass *cc = CPU_GET_CLASS(cpu);
219
220 if (cc->dump_statistics) {
221 cc->dump_statistics(cpu, f, cpu_fprintf, flags);
222 }
223}
224
Andreas Färberdd83b062012-01-28 16:39:52 +0100225void cpu_reset(CPUState *cpu)
226{
227 CPUClass *klass = CPU_GET_CLASS(cpu);
228
229 if (klass->reset != NULL) {
230 (*klass->reset)(cpu);
231 }
232}
233
234static void cpu_common_reset(CPUState *cpu)
235{
Andreas Färber91b1df82013-06-16 07:49:48 +0200236 CPUClass *cc = CPU_GET_CLASS(cpu);
237
238 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
239 qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
240 log_cpu_state(cpu, cc->reset_dump_flags);
241 }
242
Andreas Färber259186a2013-01-17 18:51:17 +0100243 cpu->interrupt_request = 0;
Andreas Färberd77953b2013-01-16 19:29:31 +0100244 cpu->current_tb = NULL;
Andreas Färber259186a2013-01-17 18:51:17 +0100245 cpu->halted = 0;
Andreas Färber93afead2013-08-26 03:41:01 +0200246 cpu->mem_io_pc = 0;
247 cpu->mem_io_vaddr = 0;
Andreas Färberefee7342013-08-26 05:39:29 +0200248 cpu->icount_extra = 0;
Andreas Färber28ecfd72013-08-26 05:51:49 +0200249 cpu->icount_decr.u32 = 0;
Paolo Bonzini414b15c2015-06-24 14:16:26 +0200250 cpu->can_do_io = 1;
Paolo Bonzinif9d8f662014-12-19 12:53:13 +0100251 cpu->exception_index = -1;
Andreas Färber8cd70432013-08-26 06:03:38 +0200252 memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
Andreas Färberdd83b062012-01-28 16:39:52 +0100253}
254
Andreas Färber8c2e1b02013-08-25 18:53:55 +0200255static bool cpu_common_has_work(CPUState *cs)
256{
257 return false;
258}
259
Andreas Färber2b8c2752013-01-21 18:26:21 +0100260ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
261{
262 CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
263
264 return cc->class_by_name(cpu_model);
265}
266
267static ObjectClass *cpu_common_class_by_name(const char *cpu_model)
268{
269 return NULL;
270}
271
Andreas Färber1590bbc2014-03-03 23:33:51 +0100272static void cpu_common_parse_features(CPUState *cpu, char *features,
273 Error **errp)
274{
275 char *featurestr; /* Single "key=value" string being parsed */
276 char *val;
277 Error *err = NULL;
278
279 featurestr = features ? strtok(features, ",") : NULL;
280
281 while (featurestr) {
282 val = strchr(featurestr, '=');
283 if (val) {
284 *val = 0;
285 val++;
286 object_property_parse(OBJECT(cpu), val, featurestr, &err);
287 if (err) {
288 error_propagate(errp, err);
289 return;
290 }
291 } else {
292 error_setg(errp, "Expected key=value format, found %s.",
293 featurestr);
294 return;
295 }
296 featurestr = strtok(NULL, ",");
297 }
298}
299
Andreas Färber4f658092013-01-19 06:17:06 +0100300static void cpu_common_realizefn(DeviceState *dev, Error **errp)
301{
Igor Mammedov13eed942013-04-23 10:29:36 +0200302 CPUState *cpu = CPU(dev);
303
304 if (dev->hotplugged) {
305 cpu_synchronize_post_init(cpu);
Igor Mammedov6afb4722013-04-23 10:29:38 +0200306 cpu_resume(cpu);
Igor Mammedov13eed942013-04-23 10:29:36 +0200307 }
Andreas Färber4f658092013-01-19 06:17:06 +0100308}
309
Andreas Färbera0e372f2013-06-28 23:18:47 +0200310static void cpu_common_initfn(Object *obj)
311{
312 CPUState *cpu = CPU(obj);
313 CPUClass *cc = CPU_GET_CLASS(obj);
314
Bharata B Raob7bca732015-06-23 19:31:13 -0700315 cpu->cpu_index = -1;
Andreas Färber35143f02013-08-12 18:09:47 +0200316 cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs;
Eduardo Habkost7c391632015-04-27 17:00:32 -0300317 QTAILQ_INIT(&cpu->breakpoints);
318 QTAILQ_INIT(&cpu->watchpoints);
Andreas Färbera0e372f2013-06-28 23:18:47 +0200319}
320
Bharata B Raob7bca732015-06-23 19:31:13 -0700321static void cpu_common_finalize(Object *obj)
322{
323 cpu_exec_exit(CPU(obj));
324}
325
Igor Mammedov997395d2013-04-23 10:29:41 +0200326static int64_t cpu_common_get_arch_id(CPUState *cpu)
327{
328 return cpu->cpu_index;
329}
330
Andreas Färberdd83b062012-01-28 16:39:52 +0100331static void cpu_class_init(ObjectClass *klass, void *data)
332{
Eduardo Habkost961f8392012-12-05 14:49:13 -0200333 DeviceClass *dc = DEVICE_CLASS(klass);
Andreas Färberdd83b062012-01-28 16:39:52 +0100334 CPUClass *k = CPU_CLASS(klass);
335
Andreas Färber2b8c2752013-01-21 18:26:21 +0100336 k->class_by_name = cpu_common_class_by_name;
Andreas Färber1590bbc2014-03-03 23:33:51 +0100337 k->parse_features = cpu_common_parse_features;
Andreas Färberdd83b062012-01-28 16:39:52 +0100338 k->reset = cpu_common_reset;
Igor Mammedov997395d2013-04-23 10:29:41 +0200339 k->get_arch_id = cpu_common_get_arch_id;
Andreas Färber8c2e1b02013-08-25 18:53:55 +0200340 k->has_work = cpu_common_has_work;
Andreas Färber444d5592013-05-28 13:28:38 +0200341 k->get_paging_enabled = cpu_common_get_paging_enabled;
Andreas Färbera23bbfd2013-05-28 13:52:01 +0200342 k->get_memory_mapping = cpu_common_get_memory_mapping;
Jens Freimannc72bf462013-04-19 16:45:06 +0200343 k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;
344 k->write_elf32_note = cpu_common_write_elf32_note;
345 k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;
346 k->write_elf64_note = cpu_common_write_elf64_note;
Andreas Färber5b50e792013-06-29 04:18:45 +0200347 k->gdb_read_register = cpu_common_gdb_read_register;
348 k->gdb_write_register = cpu_common_gdb_write_register;
Greg Kurzbf7663c2014-06-24 19:33:21 +0200349 k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
Richard Hendersoncffe7b32014-09-13 09:45:12 -0700350 k->debug_excp_handler = cpu_common_noop;
351 k->cpu_exec_enter = cpu_common_noop;
352 k->cpu_exec_exit = cpu_common_noop;
Richard Henderson9585db62014-09-13 09:45:17 -0700353 k->cpu_exec_interrupt = cpu_common_exec_interrupt;
Andreas Färber4f658092013-01-19 06:17:06 +0100354 dc->realize = cpu_common_realizefn;
Markus Armbrusterffa95712013-11-28 17:26:56 +0100355 /*
356 * Reason: CPUs still need special care by board code: wiring up
357 * IRQs, adding reset handlers, halting non-first CPUs, ...
358 */
359 dc->cannot_instantiate_with_device_add_yet = true;
Andreas Färberdd83b062012-01-28 16:39:52 +0100360}
361
Eduardo Habkost961f8392012-12-05 14:49:13 -0200362static const TypeInfo cpu_type_info = {
Andreas Färberdd83b062012-01-28 16:39:52 +0100363 .name = TYPE_CPU,
Eduardo Habkost961f8392012-12-05 14:49:13 -0200364 .parent = TYPE_DEVICE,
Andreas Färberdd83b062012-01-28 16:39:52 +0100365 .instance_size = sizeof(CPUState),
Andreas Färbera0e372f2013-06-28 23:18:47 +0200366 .instance_init = cpu_common_initfn,
Bharata B Raob7bca732015-06-23 19:31:13 -0700367 .instance_finalize = cpu_common_finalize,
Andreas Färberdd83b062012-01-28 16:39:52 +0100368 .abstract = true,
369 .class_size = sizeof(CPUClass),
370 .class_init = cpu_class_init,
371};
372
373static void cpu_register_types(void)
374{
375 type_register_static(&cpu_type_info);
376}
377
378type_init(cpu_register_types)