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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 | ||
61d9f32b | 20 | #include "qemu/osdep.h" |
da34e65c | 21 | #include "qapi/error.h" |
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22 | #include "cpu.h" |
23 | #include "qemu-common.h" | |
63c91552 | 24 | #include "exec/exec-all.h" |
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25 | |
26 | static inline void set_feature(CPUTriCoreState *env, int feature) | |
27 | { | |
28 | env->features |= 1ULL << feature; | |
29 | } | |
30 | ||
31 | static void tricore_cpu_set_pc(CPUState *cs, vaddr value) | |
32 | { | |
33 | TriCoreCPU *cpu = TRICORE_CPU(cs); | |
34 | CPUTriCoreState *env = &cpu->env; | |
35 | ||
36 | env->PC = value & ~(target_ulong)1; | |
37 | } | |
38 | ||
39 | static void tricore_cpu_synchronize_from_tb(CPUState *cs, | |
40 | TranslationBlock *tb) | |
41 | { | |
42 | TriCoreCPU *cpu = TRICORE_CPU(cs); | |
43 | CPUTriCoreState *env = &cpu->env; | |
44 | ||
45 | env->PC = tb->pc; | |
46 | } | |
47 | ||
48 | static void tricore_cpu_reset(CPUState *s) | |
49 | { | |
50 | TriCoreCPU *cpu = TRICORE_CPU(s); | |
51 | TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu); | |
52 | CPUTriCoreState *env = &cpu->env; | |
53 | ||
54 | tcc->parent_reset(s); | |
55 | ||
56 | tlb_flush(s, 1); | |
57 | ||
58 | cpu_state_reset(env); | |
59 | } | |
60 | ||
61 | static bool tricore_cpu_has_work(CPUState *cs) | |
62 | { | |
63 | return true; | |
64 | } | |
65 | ||
66 | static void tricore_cpu_realizefn(DeviceState *dev, Error **errp) | |
67 | { | |
68 | CPUState *cs = CPU(dev); | |
47e04430 | 69 | TriCoreCPU *cpu = TRICORE_CPU(dev); |
48e06fe0 | 70 | TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev); |
47e04430 | 71 | CPUTriCoreState *env = &cpu->env; |
48e06fe0 | 72 | |
47e04430 | 73 | /* Some features automatically imply others */ |
6d2afc8a BK |
74 | if (tricore_feature(env, TRICORE_FEATURE_161)) { |
75 | set_feature(env, TRICORE_FEATURE_16); | |
76 | } | |
77 | ||
47e04430 BK |
78 | if (tricore_feature(env, TRICORE_FEATURE_16)) { |
79 | set_feature(env, TRICORE_FEATURE_131); | |
80 | } | |
81 | if (tricore_feature(env, TRICORE_FEATURE_131)) { | |
82 | set_feature(env, TRICORE_FEATURE_13); | |
83 | } | |
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84 | cpu_reset(cs); |
85 | qemu_init_vcpu(cs); | |
86 | ||
87 | tcc->parent_realize(dev, errp); | |
88 | } | |
89 | ||
90 | ||
91 | static void tricore_cpu_initfn(Object *obj) | |
92 | { | |
93 | CPUState *cs = CPU(obj); | |
94 | TriCoreCPU *cpu = TRICORE_CPU(obj); | |
95 | CPUTriCoreState *env = &cpu->env; | |
96 | ||
97 | cs->env_ptr = env; | |
4bad9e39 | 98 | cpu_exec_init(cs, &error_abort); |
48e06fe0 BK |
99 | |
100 | if (tcg_enabled()) { | |
101 | tricore_tcg_init(); | |
102 | } | |
103 | } | |
104 | ||
105 | static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model) | |
106 | { | |
107 | ObjectClass *oc; | |
108 | char *typename; | |
109 | ||
110 | if (!cpu_model) { | |
111 | return NULL; | |
112 | } | |
113 | ||
114 | typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model); | |
115 | oc = object_class_by_name(typename); | |
116 | g_free(typename); | |
117 | if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) || | |
118 | object_class_is_abstract(oc)) { | |
119 | return NULL; | |
120 | } | |
121 | return oc; | |
122 | } | |
123 | ||
124 | static void tc1796_initfn(Object *obj) | |
125 | { | |
126 | TriCoreCPU *cpu = TRICORE_CPU(obj); | |
127 | ||
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128 | set_feature(&cpu->env, TRICORE_FEATURE_13); |
129 | } | |
130 | ||
131 | static void tc1797_initfn(Object *obj) | |
132 | { | |
133 | TriCoreCPU *cpu = TRICORE_CPU(obj); | |
134 | ||
5f30046f | 135 | set_feature(&cpu->env, TRICORE_FEATURE_131); |
48e06fe0 BK |
136 | } |
137 | ||
6d2afc8a | 138 | static void tc27x_initfn(Object *obj) |
48e06fe0 BK |
139 | { |
140 | TriCoreCPU *cpu = TRICORE_CPU(obj); | |
141 | ||
6d2afc8a | 142 | set_feature(&cpu->env, TRICORE_FEATURE_161); |
48e06fe0 BK |
143 | } |
144 | ||
145 | typedef struct TriCoreCPUInfo { | |
146 | const char *name; | |
147 | void (*initfn)(Object *obj); | |
148 | void (*class_init)(ObjectClass *oc, void *data); | |
149 | } TriCoreCPUInfo; | |
150 | ||
151 | static const TriCoreCPUInfo tricore_cpus[] = { | |
152 | { .name = "tc1796", .initfn = tc1796_initfn }, | |
fd5ecf31 | 153 | { .name = "tc1797", .initfn = tc1797_initfn }, |
6d2afc8a | 154 | { .name = "tc27x", .initfn = tc27x_initfn }, |
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155 | { .name = NULL } |
156 | }; | |
157 | ||
158 | static void tricore_cpu_class_init(ObjectClass *c, void *data) | |
159 | { | |
160 | TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c); | |
161 | CPUClass *cc = CPU_CLASS(c); | |
162 | DeviceClass *dc = DEVICE_CLASS(c); | |
163 | ||
164 | mcc->parent_realize = dc->realize; | |
165 | dc->realize = tricore_cpu_realizefn; | |
166 | ||
167 | mcc->parent_reset = cc->reset; | |
168 | cc->reset = tricore_cpu_reset; | |
169 | cc->class_by_name = tricore_cpu_class_by_name; | |
170 | cc->has_work = tricore_cpu_has_work; | |
171 | ||
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172 | cc->dump_state = tricore_cpu_dump_state; |
173 | cc->set_pc = tricore_cpu_set_pc; | |
174 | cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb; | |
175 | ||
4c315c27 MA |
176 | /* |
177 | * Reason: tricore_cpu_initfn() calls cpu_exec_init(), which saves | |
178 | * the object in cpus -> dangling pointer after final | |
179 | * object_unref(). | |
180 | */ | |
181 | dc->cannot_destroy_with_object_finalize_yet = true; | |
48e06fe0 BK |
182 | } |
183 | ||
184 | static void cpu_register(const TriCoreCPUInfo *info) | |
185 | { | |
186 | TypeInfo type_info = { | |
187 | .parent = TYPE_TRICORE_CPU, | |
188 | .instance_size = sizeof(TriCoreCPU), | |
189 | .instance_init = info->initfn, | |
190 | .class_size = sizeof(TriCoreCPUClass), | |
191 | .class_init = info->class_init, | |
192 | }; | |
193 | ||
194 | type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name); | |
195 | type_register(&type_info); | |
196 | g_free((void *)type_info.name); | |
197 | } | |
198 | ||
199 | static const TypeInfo tricore_cpu_type_info = { | |
200 | .name = TYPE_TRICORE_CPU, | |
201 | .parent = TYPE_CPU, | |
202 | .instance_size = sizeof(TriCoreCPU), | |
203 | .instance_init = tricore_cpu_initfn, | |
204 | .abstract = true, | |
205 | .class_size = sizeof(TriCoreCPUClass), | |
206 | .class_init = tricore_cpu_class_init, | |
207 | }; | |
208 | ||
209 | static void tricore_cpu_register_types(void) | |
210 | { | |
211 | const TriCoreCPUInfo *info = tricore_cpus; | |
212 | ||
213 | type_register_static(&tricore_cpu_type_info); | |
214 | ||
215 | while (info->name) { | |
216 | cpu_register(info); | |
217 | info++; | |
218 | } | |
219 | } | |
220 | ||
221 | type_init(tricore_cpu_register_types) |