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15#include "cpu.h"
16#include "qemu-common.h"
17#include "migration/vmstate.h"
18
19static void uc32_cpu_set_pc(CPUState *cs, vaddr value)
20{
21 UniCore32CPU *cpu = UNICORE32_CPU(cs);
22
23 cpu->env.regs[31] = value;
24}
25
26static bool uc32_cpu_has_work(CPUState *cs)
27{
28 return cs->interrupt_request &
29 (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
30}
31
32static inline void set_feature(CPUUniCore32State *env, int feature)
33{
34 env->features |= feature;
35}
36
37
38
39static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model)
40{
41 ObjectClass *oc;
42 char *typename;
43
44 if (cpu_model == NULL) {
45 return NULL;
46 }
47
48 typename = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, cpu_model);
49 oc = object_class_by_name(typename);
50 g_free(typename);
51 if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) ||
52 object_class_is_abstract(oc))) {
53 oc = NULL;
54 }
55 return oc;
56}
57
58typedef struct UniCore32CPUInfo {
59 const char *name;
60 void (*instance_init)(Object *obj);
61} UniCore32CPUInfo;
62
63static void unicore_ii_cpu_initfn(Object *obj)
64{
65 UniCore32CPU *cpu = UNICORE32_CPU(obj);
66 CPUUniCore32State *env = &cpu->env;
67
68 env->cp0.c0_cpuid = 0x4d000863;
69 env->cp0.c0_cachetype = 0x0d152152;
70 env->cp0.c1_sys = 0x2000;
71 env->cp0.c2_base = 0x0;
72 env->cp0.c3_faultstatus = 0x0;
73 env->cp0.c4_faultaddr = 0x0;
74 env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
75
76 set_feature(env, UC32_HWCAP_CMOV);
77 set_feature(env, UC32_HWCAP_UCF64);
78}
79
80static void uc32_any_cpu_initfn(Object *obj)
81{
82 UniCore32CPU *cpu = UNICORE32_CPU(obj);
83 CPUUniCore32State *env = &cpu->env;
84
85 env->cp0.c0_cpuid = 0xffffffff;
86 env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
87
88 set_feature(env, UC32_HWCAP_CMOV);
89 set_feature(env, UC32_HWCAP_UCF64);
90}
91
92static const UniCore32CPUInfo uc32_cpus[] = {
93 { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn },
94 { .name = "any", .instance_init = uc32_any_cpu_initfn },
95};
96
97static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
98{
99 UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
100
101 qemu_init_vcpu(CPU(dev));
102
103 ucc->parent_realize(dev, errp);
104}
105
106static void uc32_cpu_initfn(Object *obj)
107{
108 CPUState *cs = CPU(obj);
109 UniCore32CPU *cpu = UNICORE32_CPU(obj);
110 CPUUniCore32State *env = &cpu->env;
111 static bool inited;
112
113 cs->env_ptr = env;
114 cpu_exec_init(cs, &error_abort);
115
116#ifdef CONFIG_USER_ONLY
117 env->uncached_asr = ASR_MODE_USER;
118 env->regs[31] = 0;
119#else
120 env->uncached_asr = ASR_MODE_PRIV;
121 env->regs[31] = 0x03000000;
122#endif
123
124 tlb_flush(cs, 1);
125
126 if (tcg_enabled() && !inited) {
127 inited = true;
128 uc32_translate_init();
129 }
130}
131
132static const VMStateDescription vmstate_uc32_cpu = {
133 .name = "cpu",
134 .unmigratable = 1,
135};
136
137static void uc32_cpu_class_init(ObjectClass *oc, void *data)
138{
139 DeviceClass *dc = DEVICE_CLASS(oc);
140 CPUClass *cc = CPU_CLASS(oc);
141 UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc);
142
143 ucc->parent_realize = dc->realize;
144 dc->realize = uc32_cpu_realizefn;
145
146 cc->class_by_name = uc32_cpu_class_by_name;
147 cc->has_work = uc32_cpu_has_work;
148 cc->do_interrupt = uc32_cpu_do_interrupt;
149 cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt;
150 cc->dump_state = uc32_cpu_dump_state;
151 cc->set_pc = uc32_cpu_set_pc;
152#ifdef CONFIG_USER_ONLY
153 cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
154#else
155 cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
156#endif
157 dc->vmsd = &vmstate_uc32_cpu;
158}
159
160static void uc32_register_cpu_type(const UniCore32CPUInfo *info)
161{
162 TypeInfo type_info = {
163 .parent = TYPE_UNICORE32_CPU,
164 .instance_init = info->instance_init,
165 };
166
167 type_info.name = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, info->name);
168 type_register(&type_info);
169 g_free((void *)type_info.name);
170}
171
172static const TypeInfo uc32_cpu_type_info = {
173 .name = TYPE_UNICORE32_CPU,
174 .parent = TYPE_CPU,
175 .instance_size = sizeof(UniCore32CPU),
176 .instance_init = uc32_cpu_initfn,
177 .abstract = true,
178 .class_size = sizeof(UniCore32CPUClass),
179 .class_init = uc32_cpu_class_init,
180};
181
182static void uc32_cpu_register_types(void)
183{
184 int i;
185
186 type_register_static(&uc32_cpu_type_info);
187 for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) {
188 uc32_register_cpu_type(&uc32_cpus[i]);
189 }
190}
191
192type_init(uc32_cpu_register_types)
193
