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(CPUState *s) |
39 | { |
40 | MoxieCPU *cpu = MOXIE_CPU(s); |
41 | MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu); |
42 | CPUMoxieState *env = &cpu->env; |
43 | |
44 | mcc->parent_reset(s); |
45 | |
46 | memset(env, 0, offsetof(CPUMoxieState, end_reset_fields)); |
47 | env->pc = 0x1000; |
48 | } |
49 | |
50 | static void moxie_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) |
51 | { |
52 | info->mach = bfd_arch_moxie; |
53 | info->print_insn = print_insn_moxie; |
54 | } |
55 | |
56 | static void moxie_cpu_realizefn(DeviceState *dev, Error **errp) |
57 | { |
58 | CPUState *cs = CPU(dev); |
59 | MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev); |
60 | Error *local_err = NULL; |
61 | |
62 | cpu_exec_realizefn(cs, &local_err); |
63 | if (local_err != NULL) { |
64 | error_propagate(errp, local_err); |
65 | return; |
66 | } |
67 | |
68 | qemu_init_vcpu(cs); |
69 | cpu_reset(cs); |
70 | |
71 | mcc->parent_realize(dev, errp); |
72 | } |
73 | |
74 | static void moxie_cpu_initfn(Object *obj) |
75 | { |
76 | MoxieCPU *cpu = MOXIE_CPU(obj); |
77 | |
78 | cpu_set_cpustate_pointers(cpu); |
79 | } |
80 | |
81 | static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model) |
82 | { |
83 | ObjectClass *oc; |
84 | char *typename; |
85 | |
86 | typename = g_strdup_printf(MOXIE_CPU_TYPE_NAME("%s" ), cpu_model); |
87 | oc = object_class_by_name(typename); |
88 | g_free(typename); |
89 | if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) || |
90 | object_class_is_abstract(oc))) { |
91 | return NULL; |
92 | } |
93 | return oc; |
94 | } |
95 | |
96 | static void moxie_cpu_class_init(ObjectClass *oc, void *data) |
97 | { |
98 | DeviceClass *dc = DEVICE_CLASS(oc); |
99 | CPUClass *cc = CPU_CLASS(oc); |
100 | MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc); |
101 | |
102 | device_class_set_parent_realize(dc, moxie_cpu_realizefn, |
103 | &mcc->parent_realize); |
104 | mcc->parent_reset = cc->reset; |
105 | cc->reset = moxie_cpu_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) |
153 | |