seccomp: whitelist syscalls fallocate(), fadvise64(), inotify_init1() and inotify_add...
[qemu.git] / target-tricore / cpu.c
1 /*
2 * TriCore emulation for qemu: main translation routines.
3 *
4 * Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "cpu.h"
21 #include "qemu-common.h"
22
23 static inline void set_feature(CPUTriCoreState *env, int feature)
24 {
25 env->features |= 1ULL << feature;
26 }
27
28 static void tricore_cpu_set_pc(CPUState *cs, vaddr value)
29 {
30 TriCoreCPU *cpu = TRICORE_CPU(cs);
31 CPUTriCoreState *env = &cpu->env;
32
33 env->PC = value & ~(target_ulong)1;
34 }
35
36 static void tricore_cpu_synchronize_from_tb(CPUState *cs,
37 TranslationBlock *tb)
38 {
39 TriCoreCPU *cpu = TRICORE_CPU(cs);
40 CPUTriCoreState *env = &cpu->env;
41
42 env->PC = tb->pc;
43 }
44
45 static void tricore_cpu_reset(CPUState *s)
46 {
47 TriCoreCPU *cpu = TRICORE_CPU(s);
48 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu);
49 CPUTriCoreState *env = &cpu->env;
50
51 tcc->parent_reset(s);
52
53 tlb_flush(s, 1);
54
55 cpu_state_reset(env);
56 }
57
58 static bool tricore_cpu_has_work(CPUState *cs)
59 {
60 return true;
61 }
62
63 static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
64 {
65 CPUState *cs = CPU(dev);
66 TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev);
67
68 cpu_reset(cs);
69 qemu_init_vcpu(cs);
70
71 tcc->parent_realize(dev, errp);
72 }
73
74
75 static void tricore_cpu_initfn(Object *obj)
76 {
77 CPUState *cs = CPU(obj);
78 TriCoreCPU *cpu = TRICORE_CPU(obj);
79 CPUTriCoreState *env = &cpu->env;
80
81 cs->env_ptr = env;
82 cpu_exec_init(env);
83
84 if (tcg_enabled()) {
85 tricore_tcg_init();
86 }
87 }
88
89 static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model)
90 {
91 ObjectClass *oc;
92 char *typename;
93
94 if (!cpu_model) {
95 return NULL;
96 }
97
98 typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model);
99 oc = object_class_by_name(typename);
100 g_free(typename);
101 if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) ||
102 object_class_is_abstract(oc)) {
103 return NULL;
104 }
105 return oc;
106 }
107
108 static void tc1796_initfn(Object *obj)
109 {
110 TriCoreCPU *cpu = TRICORE_CPU(obj);
111
112 set_feature(&cpu->env, TRICORE_FEATURE_13);
113 }
114
115 static void aurix_initfn(Object *obj)
116 {
117 TriCoreCPU *cpu = TRICORE_CPU(obj);
118
119 set_feature(&cpu->env, TRICORE_FEATURE_16);
120 }
121
122 typedef struct TriCoreCPUInfo {
123 const char *name;
124 void (*initfn)(Object *obj);
125 void (*class_init)(ObjectClass *oc, void *data);
126 } TriCoreCPUInfo;
127
128 static const TriCoreCPUInfo tricore_cpus[] = {
129 { .name = "tc1796", .initfn = tc1796_initfn },
130 { .name = "aurix", .initfn = aurix_initfn },
131 { .name = NULL }
132 };
133
134 static void tricore_cpu_class_init(ObjectClass *c, void *data)
135 {
136 TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c);
137 CPUClass *cc = CPU_CLASS(c);
138 DeviceClass *dc = DEVICE_CLASS(c);
139
140 mcc->parent_realize = dc->realize;
141 dc->realize = tricore_cpu_realizefn;
142
143 mcc->parent_reset = cc->reset;
144 cc->reset = tricore_cpu_reset;
145 cc->class_by_name = tricore_cpu_class_by_name;
146 cc->has_work = tricore_cpu_has_work;
147
148 cc->dump_state = tricore_cpu_dump_state;
149 cc->set_pc = tricore_cpu_set_pc;
150 cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb;
151
152 }
153
154 static void cpu_register(const TriCoreCPUInfo *info)
155 {
156 TypeInfo type_info = {
157 .parent = TYPE_TRICORE_CPU,
158 .instance_size = sizeof(TriCoreCPU),
159 .instance_init = info->initfn,
160 .class_size = sizeof(TriCoreCPUClass),
161 .class_init = info->class_init,
162 };
163
164 type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name);
165 type_register(&type_info);
166 g_free((void *)type_info.name);
167 }
168
169 static const TypeInfo tricore_cpu_type_info = {
170 .name = TYPE_TRICORE_CPU,
171 .parent = TYPE_CPU,
172 .instance_size = sizeof(TriCoreCPU),
173 .instance_init = tricore_cpu_initfn,
174 .abstract = true,
175 .class_size = sizeof(TriCoreCPUClass),
176 .class_init = tricore_cpu_class_init,
177 };
178
179 static void tricore_cpu_register_types(void)
180 {
181 const TriCoreCPUInfo *info = tricore_cpus;
182
183 type_register_static(&tricore_cpu_type_info);
184
185 while (info->name) {
186 cpu_register(info);
187 info++;
188 }
189 }
190
191 type_init(tricore_cpu_register_types)