1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* TriCore emulation for qemu: main translation routines.
*
* Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "qemu-common.h"
static inline void set_feature(CPUTriCoreState *env, int feature)
{
env->features |= 1ULL << feature;
}
static void tricore_cpu_set_pc(CPUState *cs, vaddr value)
{
TriCoreCPU *cpu = TRICORE_CPU(cs);
CPUTriCoreState *env = &cpu->env;
env->PC = value & ~(target_ulong)1;
}
static void tricore_cpu_synchronize_from_tb(CPUState *cs,
TranslationBlock *tb)
{
TriCoreCPU *cpu = TRICORE_CPU(cs);
CPUTriCoreState *env = &cpu->env;
env->PC = tb->pc;
}
static void tricore_cpu_reset(CPUState *s)
{
TriCoreCPU *cpu = TRICORE_CPU(s);
TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu);
CPUTriCoreState *env = &cpu->env;
tcc->parent_reset(s);
tlb_flush(s, 1);
cpu_state_reset(env);
}
static bool tricore_cpu_has_work(CPUState *cs)
{
return true;
}
static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
TriCoreCPU *cpu = TRICORE_CPU(dev);
TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev);
CPUTriCoreState *env = &cpu->env;
/* Some features automatically imply others */
if (tricore_feature(env, TRICORE_FEATURE_161)) {
set_feature(env, TRICORE_FEATURE_16);
}
if (tricore_feature(env, TRICORE_FEATURE_16)) {
set_feature(env, TRICORE_FEATURE_131);
}
if (tricore_feature(env, TRICORE_FEATURE_131)) {
set_feature(env, TRICORE_FEATURE_13);
}
cpu_reset(cs);
qemu_init_vcpu(cs);
tcc->parent_realize(dev, errp);
}
static void tricore_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
TriCoreCPU *cpu = TRICORE_CPU(obj);
CPUTriCoreState *env = &cpu->env;
cs->env_ptr = env;
cpu_exec_init(cs, &error_abort);
if (tcg_enabled()) {
tricore_tcg_init();
}
}
static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
if (!cpu_model) {
return NULL;
}
typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model);
oc = object_class_by_name(typename);
g_free(typename);
if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) ||
object_class_is_abstract(oc)) {
return NULL;
}
return oc;
}
static void tc1796_initfn(Object *obj)
{
TriCoreCPU *cpu = TRICORE_CPU(obj);
set_feature(&cpu->env, TRICORE_FEATURE_13);
}
static void tc1797_initfn(Object *obj)
{
TriCoreCPU *cpu = TRICORE_CPU(obj);
set_feature(&cpu->env, TRICORE_FEATURE_131);
}
static void tc27x_initfn(Object *obj)
{
TriCoreCPU *cpu = TRICORE_CPU(obj);
set_feature(&cpu->env, TRICORE_FEATURE_161);
}
typedef struct TriCoreCPUInfo {
const char *name;
void (*initfn)(Object *obj);
void (*class_init)(ObjectClass *oc, void *data);
} TriCoreCPUInfo;
static const TriCoreCPUInfo tricore_cpus[] = {
{ .name = "tc1796", .initfn = tc1796_initfn },
{ .name = "tc1797", .initfn = tc1797_initfn },
{ .name = "tc27x", .initfn = tc27x_initfn },
{ .name = NULL }
};
static void tricore_cpu_class_init(ObjectClass *c, void *data)
{
TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c);
CPUClass *cc = CPU_CLASS(c);
DeviceClass *dc = DEVICE_CLASS(c);
mcc->parent_realize = dc->realize;
dc->realize = tricore_cpu_realizefn;
mcc->parent_reset = cc->reset;
cc->reset = tricore_cpu_reset;
cc->class_by_name = tricore_cpu_class_by_name;
cc->has_work = tricore_cpu_has_work;
cc->dump_state = tricore_cpu_dump_state;
cc->set_pc = tricore_cpu_set_pc;
cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb;
/*
* Reason: tricore_cpu_initfn() calls cpu_exec_init(), which saves
* the object in cpus -> dangling pointer after final
* object_unref().
*/
dc->cannot_destroy_with_object_finalize_yet = true;
}
static void cpu_register(const TriCoreCPUInfo *info)
{
TypeInfo type_info = {
.parent = TYPE_TRICORE_CPU,
.instance_size = sizeof(TriCoreCPU),
.instance_init = info->initfn,
.class_size = sizeof(TriCoreCPUClass),
.class_init = info->class_init,
};
type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name);
type_register(&type_info);
g_free((void *)type_info.name);
}
static const TypeInfo tricore_cpu_type_info = {
.name = TYPE_TRICORE_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(TriCoreCPU),
.instance_init = tricore_cpu_initfn,
.abstract = true,
.class_size = sizeof(TriCoreCPUClass),
.class_init = tricore_cpu_class_init,
};
static void tricore_cpu_register_types(void)
{
const TriCoreCPUInfo *info = tricore_cpus;
type_register_static(&tricore_cpu_type_info);
while (info->name) {
cpu_register(info);
info++;
}
}
type_init(tricore_cpu_register_types)
|
