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b9e7a234 AF |
1 | /* |
2 | * QEMU Motorola 68k 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 | ||
11150915 AF |
25 | static void m68k_set_feature(CPUM68KState *env, int feature) |
26 | { | |
27 | env->features |= (1u << feature); | |
28 | } | |
29 | ||
b9e7a234 AF |
30 | /* CPUClass::reset() */ |
31 | static void m68k_cpu_reset(CPUState *s) | |
32 | { | |
33 | M68kCPU *cpu = M68K_CPU(s); | |
34 | M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu); | |
35 | CPUM68KState *env = &cpu->env; | |
36 | ||
11c19868 | 37 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { |
55e5c285 | 38 | qemu_log("CPU Reset (CPU %d)\n", s->cpu_index); |
11c19868 AF |
39 | log_cpu_state(env, 0); |
40 | } | |
41 | ||
b9e7a234 AF |
42 | mcc->parent_reset(s); |
43 | ||
11c19868 AF |
44 | memset(env, 0, offsetof(CPUM68KState, breakpoints)); |
45 | #if !defined(CONFIG_USER_ONLY) | |
46 | env->sr = 0x2700; | |
47 | #endif | |
48 | m68k_switch_sp(env); | |
49 | /* ??? FP regs should be initialized to NaN. */ | |
50 | env->cc_op = CC_OP_FLAGS; | |
51 | /* TODO: We should set PC from the interrupt vector. */ | |
52 | env->pc = 0; | |
53 | tlb_flush(env, 1); | |
b9e7a234 AF |
54 | } |
55 | ||
11150915 AF |
56 | /* CPU models */ |
57 | ||
bc5b2da3 AF |
58 | static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model) |
59 | { | |
60 | ObjectClass *oc; | |
61 | ||
62 | if (cpu_model == NULL) { | |
63 | return NULL; | |
64 | } | |
65 | ||
66 | oc = object_class_by_name(cpu_model); | |
cae85065 AF |
67 | if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL || |
68 | object_class_is_abstract(oc))) { | |
bc5b2da3 AF |
69 | return NULL; |
70 | } | |
71 | return oc; | |
72 | } | |
73 | ||
11150915 AF |
74 | static void m5206_cpu_initfn(Object *obj) |
75 | { | |
76 | M68kCPU *cpu = M68K_CPU(obj); | |
77 | CPUM68KState *env = &cpu->env; | |
78 | ||
79 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
80 | } | |
81 | ||
82 | static void m5208_cpu_initfn(Object *obj) | |
83 | { | |
84 | M68kCPU *cpu = M68K_CPU(obj); | |
85 | CPUM68KState *env = &cpu->env; | |
86 | ||
87 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
88 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
89 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
90 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
91 | m68k_set_feature(env, M68K_FEATURE_USP); | |
92 | } | |
93 | ||
94 | static void cfv4e_cpu_initfn(Object *obj) | |
95 | { | |
96 | M68kCPU *cpu = M68K_CPU(obj); | |
97 | CPUM68KState *env = &cpu->env; | |
98 | ||
99 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
100 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
101 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
102 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
103 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
104 | m68k_set_feature(env, M68K_FEATURE_USP); | |
105 | } | |
106 | ||
107 | static void any_cpu_initfn(Object *obj) | |
108 | { | |
109 | M68kCPU *cpu = M68K_CPU(obj); | |
110 | CPUM68KState *env = &cpu->env; | |
111 | ||
112 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
113 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
114 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
115 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
116 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
117 | /* MAC and EMAC are mututally exclusive, so pick EMAC. | |
118 | It's mostly backwards compatible. */ | |
119 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
120 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); | |
121 | m68k_set_feature(env, M68K_FEATURE_USP); | |
122 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
123 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
124 | } | |
125 | ||
126 | typedef struct M68kCPUInfo { | |
127 | const char *name; | |
128 | void (*instance_init)(Object *obj); | |
129 | } M68kCPUInfo; | |
130 | ||
131 | static const M68kCPUInfo m68k_cpus[] = { | |
132 | { .name = "m5206", .instance_init = m5206_cpu_initfn }, | |
133 | { .name = "m5208", .instance_init = m5208_cpu_initfn }, | |
134 | { .name = "cfv4e", .instance_init = cfv4e_cpu_initfn }, | |
135 | { .name = "any", .instance_init = any_cpu_initfn }, | |
136 | }; | |
137 | ||
9b706039 AF |
138 | static void m68k_cpu_initfn(Object *obj) |
139 | { | |
140 | M68kCPU *cpu = M68K_CPU(obj); | |
141 | CPUM68KState *env = &cpu->env; | |
142 | ||
143 | cpu_exec_init(env); | |
144 | } | |
145 | ||
b9e7a234 AF |
146 | static void m68k_cpu_class_init(ObjectClass *c, void *data) |
147 | { | |
148 | M68kCPUClass *mcc = M68K_CPU_CLASS(c); | |
149 | CPUClass *cc = CPU_CLASS(c); | |
150 | ||
151 | mcc->parent_reset = cc->reset; | |
152 | cc->reset = m68k_cpu_reset; | |
bc5b2da3 AF |
153 | |
154 | cc->class_by_name = m68k_cpu_class_by_name; | |
b9e7a234 AF |
155 | } |
156 | ||
11150915 AF |
157 | static void register_cpu_type(const M68kCPUInfo *info) |
158 | { | |
159 | TypeInfo type_info = { | |
160 | .name = info->name, | |
161 | .parent = TYPE_M68K_CPU, | |
162 | .instance_init = info->instance_init, | |
163 | }; | |
164 | ||
2dddbc21 | 165 | type_register(&type_info); |
11150915 AF |
166 | } |
167 | ||
b9e7a234 AF |
168 | static const TypeInfo m68k_cpu_type_info = { |
169 | .name = TYPE_M68K_CPU, | |
170 | .parent = TYPE_CPU, | |
171 | .instance_size = sizeof(M68kCPU), | |
9b706039 | 172 | .instance_init = m68k_cpu_initfn, |
11150915 | 173 | .abstract = true, |
b9e7a234 AF |
174 | .class_size = sizeof(M68kCPUClass), |
175 | .class_init = m68k_cpu_class_init, | |
176 | }; | |
177 | ||
178 | static void m68k_cpu_register_types(void) | |
179 | { | |
11150915 AF |
180 | int i; |
181 | ||
b9e7a234 | 182 | type_register_static(&m68k_cpu_type_info); |
11150915 AF |
183 | for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) { |
184 | register_cpu_type(&m68k_cpus[i]); | |
185 | } | |
b9e7a234 AF |
186 | } |
187 | ||
188 | type_init(m68k_cpu_register_types) |