1
2
3
4
5
6
7
8
9
10
11
12
13
14
15#include "qemu/osdep.h"
16#include "qapi/error.h"
17#include "cpu.h"
18#include "qemu-common.h"
19#include "migration/vmstate.h"
20#include "exec/exec-all.h"
21#include "fpu/softfloat.h"
22
23static void uc32_cpu_set_pc(CPUState *cs, vaddr value)
24{
25 UniCore32CPU *cpu = UNICORE32_CPU(cs);
26
27 cpu->env.regs[31] = value;
28}
29
30static bool uc32_cpu_has_work(CPUState *cs)
31{
32 return cs->interrupt_request &
33 (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
34}
35
36static inline void set_feature(CPUUniCore32State *env, int feature)
37{
38 env->features |= feature;
39}
40
41
42
43static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model)
44{
45 ObjectClass *oc;
46 char *typename;
47
48 typename = g_strdup_printf(UNICORE32_CPU_TYPE_NAME("%s"), 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
58static void unicore_ii_cpu_initfn(Object *obj)
59{
60 UniCore32CPU *cpu = UNICORE32_CPU(obj);
61 CPUUniCore32State *env = &cpu->env;
62
63 env->cp0.c0_cpuid = 0x4d000863;
64 env->cp0.c0_cachetype = 0x0d152152;
65 env->cp0.c1_sys = 0x2000;
66 env->cp0.c2_base = 0x0;
67 env->cp0.c3_faultstatus = 0x0;
68 env->cp0.c4_faultaddr = 0x0;
69 env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
70
71 set_feature(env, UC32_HWCAP_CMOV);
72 set_feature(env, UC32_HWCAP_UCF64);
73 set_snan_bit_is_one(1, &env->ucf64.fp_status);
74}
75
76static void uc32_any_cpu_initfn(Object *obj)
77{
78 UniCore32CPU *cpu = UNICORE32_CPU(obj);
79 CPUUniCore32State *env = &cpu->env;
80
81 env->cp0.c0_cpuid = 0xffffffff;
82 env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
83
84 set_feature(env, UC32_HWCAP_CMOV);
85 set_feature(env, UC32_HWCAP_UCF64);
86 set_snan_bit_is_one(1, &env->ucf64.fp_status);
87}
88
89static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
90{
91 CPUState *cs = CPU(dev);
92 UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
93 Error *local_err = NULL;
94
95 cpu_exec_realizefn(cs, &local_err);
96 if (local_err != NULL) {
97 error_propagate(errp, local_err);
98 return;
99 }
100
101 qemu_init_vcpu(cs);
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
112 cs->env_ptr = env;
113
114#ifdef CONFIG_USER_ONLY
115 env->uncached_asr = ASR_MODE_USER;
116 env->regs[31] = 0;
117#else
118 env->uncached_asr = ASR_MODE_PRIV;
119 env->regs[31] = 0x03000000;
120#endif
121
122 tlb_flush(cs);
123}
124
125static const VMStateDescription vmstate_uc32_cpu = {
126 .name = "cpu",
127 .unmigratable = 1,
128};
129
130static void uc32_cpu_class_init(ObjectClass *oc, void *data)
131{
132 DeviceClass *dc = DEVICE_CLASS(oc);
133 CPUClass *cc = CPU_CLASS(oc);
134 UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc);
135
136 device_class_set_parent_realize(dc, uc32_cpu_realizefn,
137 &ucc->parent_realize);
138
139 cc->class_by_name = uc32_cpu_class_by_name;
140 cc->has_work = uc32_cpu_has_work;
141 cc->do_interrupt = uc32_cpu_do_interrupt;
142 cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt;
143 cc->dump_state = uc32_cpu_dump_state;
144 cc->set_pc = uc32_cpu_set_pc;
145#ifdef CONFIG_USER_ONLY
146 cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
147#else
148 cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
149#endif
150 cc->tcg_initialize = uc32_translate_init;
151 dc->vmsd = &vmstate_uc32_cpu;
152}
153
154#define DEFINE_UNICORE32_CPU_TYPE(cpu_model, initfn) \
155 { \
156 .parent = TYPE_UNICORE32_CPU, \
157 .instance_init = initfn, \
158 .name = UNICORE32_CPU_TYPE_NAME(cpu_model), \
159 }
160
161static const TypeInfo uc32_cpu_type_infos[] = {
162 {
163 .name = TYPE_UNICORE32_CPU,
164 .parent = TYPE_CPU,
165 .instance_size = sizeof(UniCore32CPU),
166 .instance_init = uc32_cpu_initfn,
167 .abstract = true,
168 .class_size = sizeof(UniCore32CPUClass),
169 .class_init = uc32_cpu_class_init,
170 },
171 DEFINE_UNICORE32_CPU_TYPE("UniCore-II", unicore_ii_cpu_initfn),
172 DEFINE_UNICORE32_CPU_TYPE("any", uc32_any_cpu_initfn),
173};
174
175DEFINE_TYPES(uc32_cpu_type_infos)
176
