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
26static 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
34static inline void set_feature(CPUTriCoreState *env, int feature)
35{
36 env->features |= 1ULL << feature;
37}
38
39static 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
47static 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
56static 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
67static bool tricore_cpu_has_work(CPUState *cs)
68{
69 return true;
70}
71
72static 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
104static void tricore_cpu_initfn(Object *obj)
105{
106 TriCoreCPU *cpu = TRICORE_CPU(obj);
107
108 cpu_set_cpustate_pointers(cpu);
109}
110
111static 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
126static void tc1796_initfn(Object *obj)
127{
128 TriCoreCPU *cpu = TRICORE_CPU(obj);
129
130 set_feature(&cpu->env, TRICORE_FEATURE_13);
131}
132
133static void tc1797_initfn(Object *obj)
134{
135 TriCoreCPU *cpu = TRICORE_CPU(obj);
136
137 set_feature(&cpu->env, TRICORE_FEATURE_131);
138}
139
140static void tc27x_initfn(Object *obj)
141{
142 TriCoreCPU *cpu = TRICORE_CPU(obj);
143
144 set_feature(&cpu->env, TRICORE_FEATURE_161);
145}
146
147static 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
176static 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
191DEFINE_TYPES(tricore_cpu_type_infos)
192