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[qemu/kevin.git] / accel / accel-target.c
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1 /*
2 * QEMU accel class, components common to system emulation and user mode
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2014 Red Hat Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
26 #include "qemu/osdep.h"
27 #include "qemu/accel.h"
29 #include "cpu.h"
30 #include "hw/core/accel-cpu.h"
32 #ifndef CONFIG_USER_ONLY
33 #include "accel-system.h"
34 #endif /* !CONFIG_USER_ONLY */
36 static const TypeInfo accel_type = {
37 .name = TYPE_ACCEL,
38 .parent = TYPE_OBJECT,
39 .class_size = sizeof(AccelClass),
40 .instance_size = sizeof(AccelState),
43 /* Lookup AccelClass from opt_name. Returns NULL if not found */
44 AccelClass *accel_find(const char *opt_name)
46 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
47 AccelClass *ac = ACCEL_CLASS(module_object_class_by_name(class_name));
48 g_free(class_name);
49 return ac;
52 /* Return the name of the current accelerator */
53 const char *current_accel_name(void)
55 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
57 return ac->name;
60 static void accel_init_cpu_int_aux(ObjectClass *klass, void *opaque)
62 CPUClass *cc = CPU_CLASS(klass);
63 AccelCPUClass *accel_cpu = opaque;
66 * The first callback allows accel-cpu to run initializations
67 * for the CPU, customizing CPU behavior according to the accelerator.
69 * The second one allows the CPU to customize the accel-cpu
70 * behavior according to the CPU.
72 * The second is currently only used by TCG, to specialize the
73 * TCGCPUOps depending on the CPU type.
75 cc->accel_cpu = accel_cpu;
76 if (accel_cpu->cpu_class_init) {
77 accel_cpu->cpu_class_init(cc);
79 if (cc->init_accel_cpu) {
80 cc->init_accel_cpu(accel_cpu, cc);
84 /* initialize the arch-specific accel CpuClass interfaces */
85 static void accel_init_cpu_interfaces(AccelClass *ac)
87 const char *ac_name; /* AccelClass name */
88 char *acc_name; /* AccelCPUClass name */
89 ObjectClass *acc; /* AccelCPUClass */
91 ac_name = object_class_get_name(OBJECT_CLASS(ac));
92 g_assert(ac_name != NULL);
94 acc_name = g_strdup_printf("%s-%s", ac_name, CPU_RESOLVING_TYPE);
95 acc = object_class_by_name(acc_name);
96 g_free(acc_name);
98 if (acc) {
99 object_class_foreach(accel_init_cpu_int_aux,
100 CPU_RESOLVING_TYPE, false, acc);
104 void accel_init_interfaces(AccelClass *ac)
106 #ifndef CONFIG_USER_ONLY
107 accel_init_ops_interfaces(ac);
108 #endif /* !CONFIG_USER_ONLY */
110 accel_init_cpu_interfaces(ac);
113 void accel_cpu_instance_init(CPUState *cpu)
115 CPUClass *cc = CPU_GET_CLASS(cpu);
117 if (cc->accel_cpu && cc->accel_cpu->cpu_instance_init) {
118 cc->accel_cpu->cpu_instance_init(cpu);
122 bool accel_cpu_common_realize(CPUState *cpu, Error **errp)
124 CPUClass *cc = CPU_GET_CLASS(cpu);
125 AccelState *accel = current_accel();
126 AccelClass *acc = ACCEL_GET_CLASS(accel);
128 /* target specific realization */
129 if (cc->accel_cpu && cc->accel_cpu->cpu_target_realize
130 && !cc->accel_cpu->cpu_target_realize(cpu, errp)) {
131 return false;
134 /* generic realization */
135 if (acc->cpu_common_realize && !acc->cpu_common_realize(cpu, errp)) {
136 return false;
139 return true;
142 void accel_cpu_common_unrealize(CPUState *cpu)
144 AccelState *accel = current_accel();
145 AccelClass *acc = ACCEL_GET_CLASS(accel);
147 /* generic unrealization */
148 if (acc->cpu_common_unrealize) {
149 acc->cpu_common_unrealize(cpu);
153 int accel_supported_gdbstub_sstep_flags(void)
155 AccelState *accel = current_accel();
156 AccelClass *acc = ACCEL_GET_CLASS(accel);
157 if (acc->gdbstub_supported_sstep_flags) {
158 return acc->gdbstub_supported_sstep_flags();
160 return 0;
163 static const TypeInfo accel_cpu_type = {
164 .name = TYPE_ACCEL_CPU,
165 .parent = TYPE_OBJECT,
166 .abstract = true,
167 .class_size = sizeof(AccelCPUClass),
170 static void register_accel_types(void)
172 type_register_static(&accel_type);
173 type_register_static(&accel_cpu_type);
176 type_init(register_accel_types);