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 2.1 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 "qemu/osdep.h" |
21 | #include "qapi/error.h" |
22 | #include "cpu.h" |
23 | #include "exec/exec-all.h" |
24 | #include "qemu/error-report.h" |
25 | |
26 | static hwaddr tricore_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr, |
27 | MemTxAttrs *attrs) |
28 | { |
29 | error_report("function cpu_get_phys_page_attrs_debug not " |
30 | "implemented, aborting" ); |
31 | return -1; |
32 | } |
33 | |
34 | static inline void set_feature(CPUTriCoreState *env, int feature) |
35 | { |
36 | env->features |= 1ULL << feature; |
37 | } |
38 | |
39 | static void tricore_cpu_set_pc(CPUState *cs, vaddr value) |
40 | { |
41 | TriCoreCPU *cpu = TRICORE_CPU(cs); |
42 | CPUTriCoreState *env = &cpu->env; |
43 | |
44 | env->PC = value & ~(target_ulong)1; |
45 | } |
46 | |
47 | static void tricore_cpu_synchronize_from_tb(CPUState *cs, |
48 | TranslationBlock *tb) |
49 | { |
50 | TriCoreCPU *cpu = TRICORE_CPU(cs); |
51 | CPUTriCoreState *env = &cpu->env; |
52 | |
53 | env->PC = tb->pc; |
54 | } |
55 | |
56 | static void tricore_cpu_reset(CPUState *s) |
57 | { |
58 | TriCoreCPU *cpu = TRICORE_CPU(s); |
59 | TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu); |
60 | CPUTriCoreState *env = &cpu->env; |
61 | |
62 | tcc->parent_reset(s); |
63 | |
64 | cpu_state_reset(env); |
65 | } |
66 | |
67 | static bool tricore_cpu_has_work(CPUState *cs) |
68 | { |
69 | return true; |
70 | } |
71 | |
72 | static void tricore_cpu_realizefn(DeviceState *dev, Error **errp) |
73 | { |
74 | CPUState *cs = CPU(dev); |
75 | TriCoreCPU *cpu = TRICORE_CPU(dev); |
76 | TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev); |
77 | CPUTriCoreState *env = &cpu->env; |
78 | Error *local_err = NULL; |
79 | |
80 | cpu_exec_realizefn(cs, &local_err); |
81 | if (local_err != NULL) { |
82 | error_propagate(errp, local_err); |
83 | return; |
84 | } |
85 | |
86 | /* Some features automatically imply others */ |
87 | if (tricore_feature(env, TRICORE_FEATURE_161)) { |
88 | set_feature(env, TRICORE_FEATURE_16); |
89 | } |
90 | |
91 | if (tricore_feature(env, TRICORE_FEATURE_16)) { |
92 | set_feature(env, TRICORE_FEATURE_131); |
93 | } |
94 | if (tricore_feature(env, TRICORE_FEATURE_131)) { |
95 | set_feature(env, TRICORE_FEATURE_13); |
96 | } |
97 | cpu_reset(cs); |
98 | qemu_init_vcpu(cs); |
99 | |
100 | tcc->parent_realize(dev, errp); |
101 | } |
102 | |
103 | |
104 | static void tricore_cpu_initfn(Object *obj) |
105 | { |
106 | TriCoreCPU *cpu = TRICORE_CPU(obj); |
107 | |
108 | cpu_set_cpustate_pointers(cpu); |
109 | } |
110 | |
111 | static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model) |
112 | { |
113 | ObjectClass *oc; |
114 | char *typename; |
115 | |
116 | typename = g_strdup_printf(TRICORE_CPU_TYPE_NAME("%s" ), cpu_model); |
117 | oc = object_class_by_name(typename); |
118 | g_free(typename); |
119 | if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) || |
120 | object_class_is_abstract(oc)) { |
121 | return NULL; |
122 | } |
123 | return oc; |
124 | } |
125 | |
126 | static void tc1796_initfn(Object *obj) |
127 | { |
128 | TriCoreCPU *cpu = TRICORE_CPU(obj); |
129 | |
130 | set_feature(&cpu->env, TRICORE_FEATURE_13); |
131 | } |
132 | |
133 | static void tc1797_initfn(Object *obj) |
134 | { |
135 | TriCoreCPU *cpu = TRICORE_CPU(obj); |
136 | |
137 | set_feature(&cpu->env, TRICORE_FEATURE_131); |
138 | } |
139 | |
140 | static void tc27x_initfn(Object *obj) |
141 | { |
142 | TriCoreCPU *cpu = TRICORE_CPU(obj); |
143 | |
144 | set_feature(&cpu->env, TRICORE_FEATURE_161); |
145 | } |
146 | |
147 | static void tricore_cpu_class_init(ObjectClass *c, void *data) |
148 | { |
149 | TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c); |
150 | CPUClass *cc = CPU_CLASS(c); |
151 | DeviceClass *dc = DEVICE_CLASS(c); |
152 | |
153 | device_class_set_parent_realize(dc, tricore_cpu_realizefn, |
154 | &mcc->parent_realize); |
155 | |
156 | mcc->parent_reset = cc->reset; |
157 | cc->reset = tricore_cpu_reset; |
158 | cc->class_by_name = tricore_cpu_class_by_name; |
159 | cc->has_work = tricore_cpu_has_work; |
160 | |
161 | cc->dump_state = tricore_cpu_dump_state; |
162 | cc->set_pc = tricore_cpu_set_pc; |
163 | cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb; |
164 | cc->get_phys_page_attrs_debug = tricore_cpu_get_phys_page_attrs_debug; |
165 | cc->tcg_initialize = tricore_tcg_init; |
166 | cc->tlb_fill = tricore_cpu_tlb_fill; |
167 | } |
168 | |
169 | #define DEFINE_TRICORE_CPU_TYPE(cpu_model, initfn) \ |
170 | { \ |
171 | .parent = TYPE_TRICORE_CPU, \ |
172 | .instance_init = initfn, \ |
173 | .name = TRICORE_CPU_TYPE_NAME(cpu_model), \ |
174 | } |
175 | |
176 | static const TypeInfo tricore_cpu_type_infos[] = { |
177 | { |
178 | .name = TYPE_TRICORE_CPU, |
179 | .parent = TYPE_CPU, |
180 | .instance_size = sizeof(TriCoreCPU), |
181 | .instance_init = tricore_cpu_initfn, |
182 | .abstract = true, |
183 | .class_size = sizeof(TriCoreCPUClass), |
184 | .class_init = tricore_cpu_class_init, |
185 | }, |
186 | DEFINE_TRICORE_CPU_TYPE("tc1796" , tc1796_initfn), |
187 | DEFINE_TRICORE_CPU_TYPE("tc1797" , tc1797_initfn), |
188 | DEFINE_TRICORE_CPU_TYPE("tc27x" , tc27x_initfn), |
189 | }; |
190 | |
191 | DEFINE_TYPES(tricore_cpu_type_infos) |
192 | |