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1 /*
2  * QEMU LatticeMico32 CPU
3  *
4  * Copyright (c) 2012 SUSE LINUX Products GmbH
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
18  * <http://www.gnu.org/licenses/lgpl-2.1.html>
19  */
20
21 #include "cpu.h"
22 #include "qemu-common.h"
23
24
25 static void lm32_cpu_set_pc(CPUState *cs, vaddr value)
26 {
27     LM32CPU *cpu = LM32_CPU(cs);
28
29     cpu->env.pc = value;
30 }
31
32 /* CPUClass::reset() */
33 static void lm32_cpu_reset(CPUState *s)
34 {
35     LM32CPU *cpu = LM32_CPU(s);
36     LM32CPUClass *lcc = LM32_CPU_GET_CLASS(cpu);
37     CPULM32State *env = &cpu->env;
38
39     lcc->parent_reset(s);
40
41     /* reset cpu state */
42     memset(env, 0, offsetof(CPULM32State, breakpoints));
43
44     tlb_flush(env, 1);
45 }
46
47 static void lm32_cpu_realizefn(DeviceState *dev, Error **errp)
48 {
49     LM32CPU *cpu = LM32_CPU(dev);
50     LM32CPUClass *lcc = LM32_CPU_GET_CLASS(dev);
51
52     cpu_reset(CPU(cpu));
53
54     lcc->parent_realize(dev, errp);
55 }
56
57 static void lm32_cpu_initfn(Object *obj)
58 {
59     CPUState *cs = CPU(obj);
60     LM32CPU *cpu = LM32_CPU(obj);
61     CPULM32State *env = &cpu->env;
62     static bool tcg_initialized;
63
64     cs->env_ptr = env;
65     cpu_exec_init(env);
66
67     env->flags = 0;
68
69     if (tcg_enabled() && !tcg_initialized) {
70         tcg_initialized = true;
71         lm32_translate_init();
72     }
73 }
74
75 static void lm32_cpu_class_init(ObjectClass *oc, void *data)
76 {
77     LM32CPUClass *lcc = LM32_CPU_CLASS(oc);
78     CPUClass *cc = CPU_CLASS(oc);
79     DeviceClass *dc = DEVICE_CLASS(oc);
80
81     lcc->parent_realize = dc->realize;
82     dc->realize = lm32_cpu_realizefn;
83
84     lcc->parent_reset = cc->reset;
85     cc->reset = lm32_cpu_reset;
86
87     cc->do_interrupt = lm32_cpu_do_interrupt;
88     cc->dump_state = lm32_cpu_dump_state;
89     cc->set_pc = lm32_cpu_set_pc;
90 #ifndef CONFIG_USER_ONLY
91     cc->get_phys_page_debug = lm32_cpu_get_phys_page_debug;
92     cc->vmsd = &vmstate_lm32_cpu;
93 #endif
94 }
95
96 static const TypeInfo lm32_cpu_type_info = {
97     .name = TYPE_LM32_CPU,
98     .parent = TYPE_CPU,
99     .instance_size = sizeof(LM32CPU),
100     .instance_init = lm32_cpu_initfn,
101     .abstract = false,
102     .class_size = sizeof(LM32CPUClass),
103     .class_init = lm32_cpu_class_init,
104 };
105
106 static void lm32_cpu_register_types(void)
107 {
108     type_register_static(&lm32_cpu_type_info);
109 }
110
111 type_init(lm32_cpu_register_types)
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