meson: target
[qemu.git] / target / moxie / cpu.c
1 /*
2 * QEMU Moxie CPU
3 *
4 * Copyright (c) 2013 Anthony Green
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 License
17 * along with this program. 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 "migration/vmstate.h"
24 #include "machine.h"
25
26 static void moxie_cpu_set_pc(CPUState *cs, vaddr value)
27 {
28 MoxieCPU *cpu = MOXIE_CPU(cs);
29
30 cpu->env.pc = value;
31 }
32
33 static bool moxie_cpu_has_work(CPUState *cs)
34 {
35 return cs->interrupt_request & CPU_INTERRUPT_HARD;
36 }
37
38 static void moxie_cpu_reset(DeviceState *dev)
39 {
40 CPUState *s = CPU(dev);
41 MoxieCPU *cpu = MOXIE_CPU(s);
42 MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
43 CPUMoxieState *env = &cpu->env;
44
45 mcc->parent_reset(dev);
46
47 memset(env, 0, offsetof(CPUMoxieState, end_reset_fields));
48 env->pc = 0x1000;
49 }
50
51 static void moxie_cpu_disas_set_info(CPUState *cpu, disassemble_info *info)
52 {
53 info->mach = bfd_arch_moxie;
54 info->print_insn = print_insn_moxie;
55 }
56
57 static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
58 {
59 CPUState *cs = CPU(dev);
60 MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
61 Error *local_err = NULL;
62
63 cpu_exec_realizefn(cs, &local_err);
64 if (local_err != NULL) {
65 error_propagate(errp, local_err);
66 return;
67 }
68
69 qemu_init_vcpu(cs);
70 cpu_reset(cs);
71
72 mcc->parent_realize(dev, errp);
73 }
74
75 static void moxie_cpu_initfn(Object *obj)
76 {
77 MoxieCPU *cpu = MOXIE_CPU(obj);
78
79 cpu_set_cpustate_pointers(cpu);
80 }
81
82 static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
83 {
84 ObjectClass *oc;
85 char *typename;
86
87 typename = g_strdup_printf(MOXIE_CPU_TYPE_NAME("%s"), cpu_model);
88 oc = object_class_by_name(typename);
89 g_free(typename);
90 if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) ||
91 object_class_is_abstract(oc))) {
92 return NULL;
93 }
94 return oc;
95 }
96
97 static void moxie_cpu_class_init(ObjectClass *oc, void *data)
98 {
99 DeviceClass *dc = DEVICE_CLASS(oc);
100 CPUClass *cc = CPU_CLASS(oc);
101 MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc);
102
103 device_class_set_parent_realize(dc, moxie_cpu_realizefn,
104 &mcc->parent_realize);
105 device_class_set_parent_reset(dc, moxie_cpu_reset, &mcc->parent_reset);
106
107 cc->class_by_name = moxie_cpu_class_by_name;
108
109 cc->has_work = moxie_cpu_has_work;
110 cc->do_interrupt = moxie_cpu_do_interrupt;
111 cc->dump_state = moxie_cpu_dump_state;
112 cc->set_pc = moxie_cpu_set_pc;
113 cc->tlb_fill = moxie_cpu_tlb_fill;
114 #ifndef CONFIG_USER_ONLY
115 cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug;
116 cc->vmsd = &vmstate_moxie_cpu;
117 #endif
118 cc->disas_set_info = moxie_cpu_disas_set_info;
119 cc->tcg_initialize = moxie_translate_init;
120 }
121
122 static void moxielite_initfn(Object *obj)
123 {
124 /* Set cpu feature flags */
125 }
126
127 static void moxie_any_initfn(Object *obj)
128 {
129 /* Set cpu feature flags */
130 }
131
132 #define DEFINE_MOXIE_CPU_TYPE(cpu_model, initfn) \
133 { \
134 .parent = TYPE_MOXIE_CPU, \
135 .instance_init = initfn, \
136 .name = MOXIE_CPU_TYPE_NAME(cpu_model), \
137 }
138
139 static const TypeInfo moxie_cpus_type_infos[] = {
140 { /* base class should be registered first */
141 .name = TYPE_MOXIE_CPU,
142 .parent = TYPE_CPU,
143 .instance_size = sizeof(MoxieCPU),
144 .instance_init = moxie_cpu_initfn,
145 .class_size = sizeof(MoxieCPUClass),
146 .class_init = moxie_cpu_class_init,
147 },
148 DEFINE_MOXIE_CPU_TYPE("MoxieLite", moxielite_initfn),
149 DEFINE_MOXIE_CPU_TYPE("any", moxie_any_initfn),
150 };
151
152 DEFINE_TYPES(moxie_cpus_type_infos)