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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 | ||
d8416665 | 21 | #include "qemu/osdep.h" |
da34e65c | 22 | #include "qapi/error.h" |
b9e7a234 AF |
23 | #include "cpu.h" |
24 | #include "qemu-common.h" | |
087fe4f8 | 25 | #include "migration/vmstate.h" |
63c91552 | 26 | #include "exec/exec-all.h" |
b9e7a234 AF |
27 | |
28 | ||
e700604d AF |
29 | static void m68k_cpu_set_pc(CPUState *cs, vaddr value) |
30 | { | |
31 | M68kCPU *cpu = M68K_CPU(cs); | |
32 | ||
33 | cpu->env.pc = value; | |
34 | } | |
35 | ||
8c2e1b00 AF |
36 | static bool m68k_cpu_has_work(CPUState *cs) |
37 | { | |
38 | return cs->interrupt_request & CPU_INTERRUPT_HARD; | |
39 | } | |
40 | ||
11150915 AF |
41 | static void m68k_set_feature(CPUM68KState *env, int feature) |
42 | { | |
43 | env->features |= (1u << feature); | |
44 | } | |
45 | ||
b9e7a234 AF |
46 | /* CPUClass::reset() */ |
47 | static void m68k_cpu_reset(CPUState *s) | |
48 | { | |
49 | M68kCPU *cpu = M68K_CPU(s); | |
50 | M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu); | |
51 | CPUM68KState *env = &cpu->env; | |
52 | ||
53 | mcc->parent_reset(s); | |
54 | ||
f0c3c505 | 55 | memset(env, 0, offsetof(CPUM68KState, features)); |
11c19868 AF |
56 | #if !defined(CONFIG_USER_ONLY) |
57 | env->sr = 0x2700; | |
58 | #endif | |
59 | m68k_switch_sp(env); | |
60 | /* ??? FP regs should be initialized to NaN. */ | |
620c6cf6 | 61 | cpu_m68k_set_ccr(env, 0); |
11c19868 AF |
62 | /* TODO: We should set PC from the interrupt vector. */ |
63 | env->pc = 0; | |
00c8cb0a | 64 | tlb_flush(s, 1); |
b9e7a234 AF |
65 | } |
66 | ||
4d558f5d | 67 | static void m68k_cpu_disas_set_info(CPUState *s, disassemble_info *info) |
4f669905 | 68 | { |
4d558f5d LV |
69 | M68kCPU *cpu = M68K_CPU(s); |
70 | CPUM68KState *env = &cpu->env; | |
4f669905 | 71 | info->print_insn = print_insn_m68k; |
4d558f5d LV |
72 | if (m68k_feature(env, M68K_FEATURE_M68000)) { |
73 | info->mach = bfd_mach_m68040; | |
74 | } | |
4f669905 PC |
75 | } |
76 | ||
11150915 AF |
77 | /* CPU models */ |
78 | ||
bc5b2da3 AF |
79 | static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model) |
80 | { | |
81 | ObjectClass *oc; | |
7a9f812b | 82 | char *typename; |
bc5b2da3 AF |
83 | |
84 | if (cpu_model == NULL) { | |
85 | return NULL; | |
86 | } | |
87 | ||
7a9f812b AF |
88 | typename = g_strdup_printf("%s-" TYPE_M68K_CPU, cpu_model); |
89 | oc = object_class_by_name(typename); | |
90 | g_free(typename); | |
cae85065 AF |
91 | if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL || |
92 | object_class_is_abstract(oc))) { | |
bc5b2da3 AF |
93 | return NULL; |
94 | } | |
95 | return oc; | |
96 | } | |
97 | ||
11150915 AF |
98 | static void m5206_cpu_initfn(Object *obj) |
99 | { | |
100 | M68kCPU *cpu = M68K_CPU(obj); | |
101 | CPUM68KState *env = &cpu->env; | |
102 | ||
103 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
104 | } | |
105 | ||
f076803b LV |
106 | static void m68000_cpu_initfn(Object *obj) |
107 | { | |
108 | M68kCPU *cpu = M68K_CPU(obj); | |
109 | CPUM68KState *env = &cpu->env; | |
110 | ||
111 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
112 | m68k_set_feature(env, M68K_FEATURE_USP); | |
113 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
114 | } | |
115 | ||
116 | static void m68020_cpu_initfn(Object *obj) | |
117 | { | |
118 | M68kCPU *cpu = M68K_CPU(obj); | |
119 | CPUM68KState *env = &cpu->env; | |
120 | ||
121 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
122 | m68k_set_feature(env, M68K_FEATURE_USP); | |
123 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
124 | m68k_set_feature(env, M68K_FEATURE_QUAD_MULDIV); | |
125 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
126 | m68k_set_feature(env, M68K_FEATURE_BCCL); | |
127 | m68k_set_feature(env, M68K_FEATURE_BITFIELD); | |
128 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
129 | m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); | |
130 | m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); | |
131 | m68k_set_feature(env, M68K_FEATURE_FPU); | |
132 | m68k_set_feature(env, M68K_FEATURE_CAS); | |
133 | m68k_set_feature(env, M68K_FEATURE_BKPT); | |
134 | } | |
135 | #define m68030_cpu_initfn m68020_cpu_initfn | |
136 | #define m68040_cpu_initfn m68020_cpu_initfn | |
137 | ||
138 | static void m68060_cpu_initfn(Object *obj) | |
139 | { | |
140 | M68kCPU *cpu = M68K_CPU(obj); | |
141 | CPUM68KState *env = &cpu->env; | |
142 | ||
143 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
144 | m68k_set_feature(env, M68K_FEATURE_USP); | |
145 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
146 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
147 | m68k_set_feature(env, M68K_FEATURE_BCCL); | |
148 | m68k_set_feature(env, M68K_FEATURE_BITFIELD); | |
149 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
150 | m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); | |
151 | m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); | |
152 | m68k_set_feature(env, M68K_FEATURE_FPU); | |
153 | m68k_set_feature(env, M68K_FEATURE_CAS); | |
154 | m68k_set_feature(env, M68K_FEATURE_BKPT); | |
155 | } | |
156 | ||
11150915 AF |
157 | static void m5208_cpu_initfn(Object *obj) |
158 | { | |
159 | M68kCPU *cpu = M68K_CPU(obj); | |
160 | CPUM68KState *env = &cpu->env; | |
161 | ||
162 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
163 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
164 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
165 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
166 | m68k_set_feature(env, M68K_FEATURE_USP); | |
167 | } | |
168 | ||
169 | static void cfv4e_cpu_initfn(Object *obj) | |
170 | { | |
171 | M68kCPU *cpu = M68K_CPU(obj); | |
172 | CPUM68KState *env = &cpu->env; | |
173 | ||
174 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
175 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
176 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
177 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
178 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
179 | m68k_set_feature(env, M68K_FEATURE_USP); | |
180 | } | |
181 | ||
182 | static void any_cpu_initfn(Object *obj) | |
183 | { | |
184 | M68kCPU *cpu = M68K_CPU(obj); | |
185 | CPUM68KState *env = &cpu->env; | |
186 | ||
187 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
188 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
189 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
190 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
191 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
192 | /* MAC and EMAC are mututally exclusive, so pick EMAC. | |
193 | It's mostly backwards compatible. */ | |
194 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
195 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); | |
196 | m68k_set_feature(env, M68K_FEATURE_USP); | |
197 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
198 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
199 | } | |
200 | ||
201 | typedef struct M68kCPUInfo { | |
202 | const char *name; | |
203 | void (*instance_init)(Object *obj); | |
204 | } M68kCPUInfo; | |
205 | ||
206 | static const M68kCPUInfo m68k_cpus[] = { | |
f076803b LV |
207 | { .name = "m68000", .instance_init = m68000_cpu_initfn }, |
208 | { .name = "m68020", .instance_init = m68020_cpu_initfn }, | |
209 | { .name = "m68030", .instance_init = m68030_cpu_initfn }, | |
210 | { .name = "m68040", .instance_init = m68040_cpu_initfn }, | |
211 | { .name = "m68060", .instance_init = m68060_cpu_initfn }, | |
11150915 AF |
212 | { .name = "m5206", .instance_init = m5206_cpu_initfn }, |
213 | { .name = "m5208", .instance_init = m5208_cpu_initfn }, | |
214 | { .name = "cfv4e", .instance_init = cfv4e_cpu_initfn }, | |
215 | { .name = "any", .instance_init = any_cpu_initfn }, | |
216 | }; | |
217 | ||
6d1bbc62 AF |
218 | static void m68k_cpu_realizefn(DeviceState *dev, Error **errp) |
219 | { | |
14a10fc3 | 220 | CPUState *cs = CPU(dev); |
6d1bbc62 AF |
221 | M68kCPU *cpu = M68K_CPU(dev); |
222 | M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev); | |
ce5b1bbf LV |
223 | Error *local_err = NULL; |
224 | ||
225 | cpu_exec_realizefn(cs, &local_err); | |
226 | if (local_err != NULL) { | |
227 | error_propagate(errp, local_err); | |
228 | return; | |
229 | } | |
6d1bbc62 AF |
230 | |
231 | m68k_cpu_init_gdb(cpu); | |
232 | ||
14a10fc3 AF |
233 | cpu_reset(cs); |
234 | qemu_init_vcpu(cs); | |
6d1bbc62 AF |
235 | |
236 | mcc->parent_realize(dev, errp); | |
237 | } | |
238 | ||
9b706039 AF |
239 | static void m68k_cpu_initfn(Object *obj) |
240 | { | |
c05efcb1 | 241 | CPUState *cs = CPU(obj); |
9b706039 AF |
242 | M68kCPU *cpu = M68K_CPU(obj); |
243 | CPUM68KState *env = &cpu->env; | |
1cc89619 | 244 | static bool inited; |
9b706039 | 245 | |
c05efcb1 | 246 | cs->env_ptr = env; |
1cc89619 AF |
247 | |
248 | if (tcg_enabled() && !inited) { | |
249 | inited = true; | |
250 | m68k_tcg_init(); | |
251 | } | |
9b706039 AF |
252 | } |
253 | ||
087fe4f8 AF |
254 | static const VMStateDescription vmstate_m68k_cpu = { |
255 | .name = "cpu", | |
256 | .unmigratable = 1, | |
257 | }; | |
258 | ||
b9e7a234 AF |
259 | static void m68k_cpu_class_init(ObjectClass *c, void *data) |
260 | { | |
261 | M68kCPUClass *mcc = M68K_CPU_CLASS(c); | |
262 | CPUClass *cc = CPU_CLASS(c); | |
087fe4f8 | 263 | DeviceClass *dc = DEVICE_CLASS(c); |
b9e7a234 | 264 | |
6d1bbc62 AF |
265 | mcc->parent_realize = dc->realize; |
266 | dc->realize = m68k_cpu_realizefn; | |
267 | ||
b9e7a234 AF |
268 | mcc->parent_reset = cc->reset; |
269 | cc->reset = m68k_cpu_reset; | |
bc5b2da3 AF |
270 | |
271 | cc->class_by_name = m68k_cpu_class_by_name; | |
8c2e1b00 | 272 | cc->has_work = m68k_cpu_has_work; |
97a8ea5a | 273 | cc->do_interrupt = m68k_cpu_do_interrupt; |
ab409bb3 | 274 | cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt; |
878096ee | 275 | cc->dump_state = m68k_cpu_dump_state; |
e700604d | 276 | cc->set_pc = m68k_cpu_set_pc; |
5b50e790 AF |
277 | cc->gdb_read_register = m68k_cpu_gdb_read_register; |
278 | cc->gdb_write_register = m68k_cpu_gdb_write_register; | |
7510454e AF |
279 | #ifdef CONFIG_USER_ONLY |
280 | cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault; | |
281 | #else | |
00b941e5 AF |
282 | cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug; |
283 | #endif | |
4f669905 | 284 | cc->disas_set_info = m68k_cpu_disas_set_info; |
00f3fd63 | 285 | |
a0e372f0 | 286 | cc->gdb_num_core_regs = 18; |
5b24c641 | 287 | cc->gdb_core_xml_file = "cf-core.xml"; |
4c315c27 | 288 | |
4f669905 | 289 | dc->vmsd = &vmstate_m68k_cpu; |
b9e7a234 AF |
290 | } |
291 | ||
11150915 AF |
292 | static void register_cpu_type(const M68kCPUInfo *info) |
293 | { | |
294 | TypeInfo type_info = { | |
11150915 AF |
295 | .parent = TYPE_M68K_CPU, |
296 | .instance_init = info->instance_init, | |
297 | }; | |
298 | ||
7a9f812b | 299 | type_info.name = g_strdup_printf("%s-" TYPE_M68K_CPU, info->name); |
2dddbc21 | 300 | type_register(&type_info); |
7a9f812b | 301 | g_free((void *)type_info.name); |
11150915 AF |
302 | } |
303 | ||
b9e7a234 AF |
304 | static const TypeInfo m68k_cpu_type_info = { |
305 | .name = TYPE_M68K_CPU, | |
306 | .parent = TYPE_CPU, | |
307 | .instance_size = sizeof(M68kCPU), | |
9b706039 | 308 | .instance_init = m68k_cpu_initfn, |
11150915 | 309 | .abstract = true, |
b9e7a234 AF |
310 | .class_size = sizeof(M68kCPUClass), |
311 | .class_init = m68k_cpu_class_init, | |
312 | }; | |
313 | ||
314 | static void m68k_cpu_register_types(void) | |
315 | { | |
11150915 AF |
316 | int i; |
317 | ||
b9e7a234 | 318 | type_register_static(&m68k_cpu_type_info); |
11150915 AF |
319 | for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) { |
320 | register_cpu_type(&m68k_cpus[i]); | |
321 | } | |
b9e7a234 AF |
322 | } |
323 | ||
324 | type_init(m68k_cpu_register_types) |