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1 | /* | |
2 | * QEMU CPU model | |
3 | * | |
4 | * Copyright (c) 2012 SUSE LINUX Products GmbH | |
5 | * | |
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 | ||
21 | #include "qemu-common.h" | |
22 | #include "qom/cpu.h" | |
23 | #include "sysemu/kvm.h" | |
24 | #include "qemu/notify.h" | |
25 | #include "qemu/log.h" | |
26 | #include "sysemu/sysemu.h" | |
27 | ||
28 | bool cpu_exists(int64_t id) | |
29 | { | |
30 | CPUState *cpu; | |
31 | ||
32 | CPU_FOREACH(cpu) { | |
33 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
34 | ||
35 | if (cc->get_arch_id(cpu) == id) { | |
36 | return true; | |
37 | } | |
38 | } | |
39 | return false; | |
40 | } | |
41 | ||
42 | bool cpu_paging_enabled(const CPUState *cpu) | |
43 | { | |
44 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
45 | ||
46 | return cc->get_paging_enabled(cpu); | |
47 | } | |
48 | ||
49 | static bool cpu_common_get_paging_enabled(const CPUState *cpu) | |
50 | { | |
51 | return false; | |
52 | } | |
53 | ||
54 | void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list, | |
55 | Error **errp) | |
56 | { | |
57 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
58 | ||
59 | return cc->get_memory_mapping(cpu, list, errp); | |
60 | } | |
61 | ||
62 | static void cpu_common_get_memory_mapping(CPUState *cpu, | |
63 | MemoryMappingList *list, | |
64 | Error **errp) | |
65 | { | |
66 | error_setg(errp, "Obtaining memory mappings is unsupported on this CPU."); | |
67 | } | |
68 | ||
69 | /* CPU hot-plug notifiers */ | |
70 | static NotifierList cpu_added_notifiers = | |
71 | NOTIFIER_LIST_INITIALIZER(cpu_add_notifiers); | |
72 | ||
73 | void qemu_register_cpu_added_notifier(Notifier *notifier) | |
74 | { | |
75 | notifier_list_add(&cpu_added_notifiers, notifier); | |
76 | } | |
77 | ||
78 | void cpu_reset_interrupt(CPUState *cpu, int mask) | |
79 | { | |
80 | cpu->interrupt_request &= ~mask; | |
81 | } | |
82 | ||
83 | void cpu_exit(CPUState *cpu) | |
84 | { | |
85 | cpu->exit_request = 1; | |
86 | cpu->tcg_exit_req = 1; | |
87 | } | |
88 | ||
89 | int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu, | |
90 | void *opaque) | |
91 | { | |
92 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
93 | ||
94 | return (*cc->write_elf32_qemunote)(f, cpu, opaque); | |
95 | } | |
96 | ||
97 | static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f, | |
98 | CPUState *cpu, void *opaque) | |
99 | { | |
100 | return -1; | |
101 | } | |
102 | ||
103 | int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu, | |
104 | int cpuid, void *opaque) | |
105 | { | |
106 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
107 | ||
108 | return (*cc->write_elf32_note)(f, cpu, cpuid, opaque); | |
109 | } | |
110 | ||
111 | static int cpu_common_write_elf32_note(WriteCoreDumpFunction f, | |
112 | CPUState *cpu, int cpuid, | |
113 | void *opaque) | |
114 | { | |
115 | return -1; | |
116 | } | |
117 | ||
118 | int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu, | |
119 | void *opaque) | |
120 | { | |
121 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
122 | ||
123 | return (*cc->write_elf64_qemunote)(f, cpu, opaque); | |
124 | } | |
125 | ||
126 | static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f, | |
127 | CPUState *cpu, void *opaque) | |
128 | { | |
129 | return -1; | |
130 | } | |
131 | ||
132 | int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu, | |
133 | int cpuid, void *opaque) | |
134 | { | |
135 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
136 | ||
137 | return (*cc->write_elf64_note)(f, cpu, cpuid, opaque); | |
138 | } | |
139 | ||
140 | static int cpu_common_write_elf64_note(WriteCoreDumpFunction f, | |
141 | CPUState *cpu, int cpuid, | |
142 | void *opaque) | |
143 | { | |
144 | return -1; | |
145 | } | |
146 | ||
147 | ||
148 | static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg) | |
149 | { | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg) | |
154 | { | |
155 | return 0; | |
156 | } | |
157 | ||
158 | ||
159 | void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, | |
160 | int flags) | |
161 | { | |
162 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
163 | ||
164 | if (cc->dump_state) { | |
165 | cpu_synchronize_state(cpu); | |
166 | cc->dump_state(cpu, f, cpu_fprintf, flags); | |
167 | } | |
168 | } | |
169 | ||
170 | void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, | |
171 | int flags) | |
172 | { | |
173 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
174 | ||
175 | if (cc->dump_statistics) { | |
176 | cc->dump_statistics(cpu, f, cpu_fprintf, flags); | |
177 | } | |
178 | } | |
179 | ||
180 | void cpu_reset(CPUState *cpu) | |
181 | { | |
182 | CPUClass *klass = CPU_GET_CLASS(cpu); | |
183 | ||
184 | if (klass->reset != NULL) { | |
185 | (*klass->reset)(cpu); | |
186 | } | |
187 | } | |
188 | ||
189 | static void cpu_common_reset(CPUState *cpu) | |
190 | { | |
191 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
192 | ||
193 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { | |
194 | qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index); | |
195 | log_cpu_state(cpu, cc->reset_dump_flags); | |
196 | } | |
197 | ||
198 | cpu->exit_request = 0; | |
199 | cpu->interrupt_request = 0; | |
200 | cpu->current_tb = NULL; | |
201 | cpu->halted = 0; | |
202 | } | |
203 | ||
204 | ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model) | |
205 | { | |
206 | CPUClass *cc = CPU_CLASS(object_class_by_name(typename)); | |
207 | ||
208 | return cc->class_by_name(cpu_model); | |
209 | } | |
210 | ||
211 | static ObjectClass *cpu_common_class_by_name(const char *cpu_model) | |
212 | { | |
213 | return NULL; | |
214 | } | |
215 | ||
216 | static void cpu_common_realizefn(DeviceState *dev, Error **errp) | |
217 | { | |
218 | CPUState *cpu = CPU(dev); | |
219 | ||
220 | if (dev->hotplugged) { | |
221 | cpu_synchronize_post_init(cpu); | |
222 | notifier_list_notify(&cpu_added_notifiers, dev); | |
223 | cpu_resume(cpu); | |
224 | } | |
225 | } | |
226 | ||
227 | static void cpu_common_initfn(Object *obj) | |
228 | { | |
229 | CPUState *cpu = CPU(obj); | |
230 | CPUClass *cc = CPU_GET_CLASS(obj); | |
231 | ||
232 | cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs; | |
233 | } | |
234 | ||
235 | static int64_t cpu_common_get_arch_id(CPUState *cpu) | |
236 | { | |
237 | return cpu->cpu_index; | |
238 | } | |
239 | ||
240 | static void cpu_class_init(ObjectClass *klass, void *data) | |
241 | { | |
242 | DeviceClass *dc = DEVICE_CLASS(klass); | |
243 | CPUClass *k = CPU_CLASS(klass); | |
244 | ||
245 | k->class_by_name = cpu_common_class_by_name; | |
246 | k->reset = cpu_common_reset; | |
247 | k->get_arch_id = cpu_common_get_arch_id; | |
248 | k->get_paging_enabled = cpu_common_get_paging_enabled; | |
249 | k->get_memory_mapping = cpu_common_get_memory_mapping; | |
250 | k->write_elf32_qemunote = cpu_common_write_elf32_qemunote; | |
251 | k->write_elf32_note = cpu_common_write_elf32_note; | |
252 | k->write_elf64_qemunote = cpu_common_write_elf64_qemunote; | |
253 | k->write_elf64_note = cpu_common_write_elf64_note; | |
254 | k->gdb_read_register = cpu_common_gdb_read_register; | |
255 | k->gdb_write_register = cpu_common_gdb_write_register; | |
256 | dc->realize = cpu_common_realizefn; | |
257 | dc->no_user = 1; | |
258 | } | |
259 | ||
260 | static const TypeInfo cpu_type_info = { | |
261 | .name = TYPE_CPU, | |
262 | .parent = TYPE_DEVICE, | |
263 | .instance_size = sizeof(CPUState), | |
264 | .instance_init = cpu_common_initfn, | |
265 | .abstract = true, | |
266 | .class_size = sizeof(CPUClass), | |
267 | .class_init = cpu_class_init, | |
268 | }; | |
269 | ||
270 | static void cpu_register_types(void) | |
271 | { | |
272 | type_register_static(&cpu_type_info); | |
273 | } | |
274 | ||
275 | type_init(cpu_register_types) |