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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; | |
f83311e4 | 52 | floatx80 nan = floatx80_default_nan(NULL); |
f4a6ce51 | 53 | int i; |
b9e7a234 AF |
54 | |
55 | mcc->parent_reset(s); | |
56 | ||
1f5c00cf | 57 | memset(env, 0, offsetof(CPUM68KState, end_reset_fields)); |
11c19868 AF |
58 | #if !defined(CONFIG_USER_ONLY) |
59 | env->sr = 0x2700; | |
60 | #endif | |
61 | m68k_switch_sp(env); | |
f4a6ce51 | 62 | for (i = 0; i < 8; i++) { |
f83311e4 | 63 | env->fregs[i].d = nan; |
f4a6ce51 | 64 | } |
ba624944 | 65 | cpu_m68k_set_fpcr(env, 0); |
f4a6ce51 LV |
66 | env->fpsr = 0; |
67 | ||
620c6cf6 | 68 | cpu_m68k_set_ccr(env, 0); |
11c19868 AF |
69 | /* TODO: We should set PC from the interrupt vector. */ |
70 | env->pc = 0; | |
b9e7a234 AF |
71 | } |
72 | ||
4d558f5d | 73 | static void m68k_cpu_disas_set_info(CPUState *s, disassemble_info *info) |
4f669905 | 74 | { |
4d558f5d LV |
75 | M68kCPU *cpu = M68K_CPU(s); |
76 | CPUM68KState *env = &cpu->env; | |
4f669905 | 77 | info->print_insn = print_insn_m68k; |
4d558f5d LV |
78 | if (m68k_feature(env, M68K_FEATURE_M68000)) { |
79 | info->mach = bfd_mach_m68040; | |
80 | } | |
4f669905 PC |
81 | } |
82 | ||
11150915 AF |
83 | /* CPU models */ |
84 | ||
bc5b2da3 AF |
85 | static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model) |
86 | { | |
87 | ObjectClass *oc; | |
7a9f812b | 88 | char *typename; |
bc5b2da3 AF |
89 | |
90 | if (cpu_model == NULL) { | |
91 | return NULL; | |
92 | } | |
93 | ||
7a9f812b AF |
94 | typename = g_strdup_printf("%s-" TYPE_M68K_CPU, cpu_model); |
95 | oc = object_class_by_name(typename); | |
96 | g_free(typename); | |
cae85065 AF |
97 | if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL || |
98 | object_class_is_abstract(oc))) { | |
bc5b2da3 AF |
99 | return NULL; |
100 | } | |
101 | return oc; | |
102 | } | |
103 | ||
11150915 AF |
104 | static void m5206_cpu_initfn(Object *obj) |
105 | { | |
106 | M68kCPU *cpu = M68K_CPU(obj); | |
107 | CPUM68KState *env = &cpu->env; | |
108 | ||
109 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
110 | } | |
111 | ||
f076803b LV |
112 | static void m68000_cpu_initfn(Object *obj) |
113 | { | |
114 | M68kCPU *cpu = M68K_CPU(obj); | |
115 | CPUM68KState *env = &cpu->env; | |
116 | ||
117 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
118 | m68k_set_feature(env, M68K_FEATURE_USP); | |
119 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
120 | } | |
121 | ||
122 | static void m68020_cpu_initfn(Object *obj) | |
123 | { | |
124 | M68kCPU *cpu = M68K_CPU(obj); | |
125 | CPUM68KState *env = &cpu->env; | |
126 | ||
127 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
128 | m68k_set_feature(env, M68K_FEATURE_USP); | |
129 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
130 | m68k_set_feature(env, M68K_FEATURE_QUAD_MULDIV); | |
131 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
132 | m68k_set_feature(env, M68K_FEATURE_BCCL); | |
133 | m68k_set_feature(env, M68K_FEATURE_BITFIELD); | |
134 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
135 | m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); | |
136 | m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); | |
137 | m68k_set_feature(env, M68K_FEATURE_FPU); | |
138 | m68k_set_feature(env, M68K_FEATURE_CAS); | |
139 | m68k_set_feature(env, M68K_FEATURE_BKPT); | |
18059c9e | 140 | m68k_set_feature(env, M68K_FEATURE_RTD); |
f076803b LV |
141 | } |
142 | #define m68030_cpu_initfn m68020_cpu_initfn | |
143 | #define m68040_cpu_initfn m68020_cpu_initfn | |
144 | ||
145 | static void m68060_cpu_initfn(Object *obj) | |
146 | { | |
147 | M68kCPU *cpu = M68K_CPU(obj); | |
148 | CPUM68KState *env = &cpu->env; | |
149 | ||
150 | m68k_set_feature(env, M68K_FEATURE_M68000); | |
151 | m68k_set_feature(env, M68K_FEATURE_USP); | |
152 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
153 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
154 | m68k_set_feature(env, M68K_FEATURE_BCCL); | |
155 | m68k_set_feature(env, M68K_FEATURE_BITFIELD); | |
156 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
157 | m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX); | |
158 | m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV); | |
159 | m68k_set_feature(env, M68K_FEATURE_FPU); | |
160 | m68k_set_feature(env, M68K_FEATURE_CAS); | |
161 | m68k_set_feature(env, M68K_FEATURE_BKPT); | |
18059c9e | 162 | m68k_set_feature(env, M68K_FEATURE_RTD); |
f076803b LV |
163 | } |
164 | ||
11150915 AF |
165 | static void m5208_cpu_initfn(Object *obj) |
166 | { | |
167 | M68kCPU *cpu = M68K_CPU(obj); | |
168 | CPUM68KState *env = &cpu->env; | |
169 | ||
170 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
171 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
172 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
173 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
174 | m68k_set_feature(env, M68K_FEATURE_USP); | |
175 | } | |
176 | ||
177 | static void cfv4e_cpu_initfn(Object *obj) | |
178 | { | |
179 | M68kCPU *cpu = M68K_CPU(obj); | |
180 | CPUM68KState *env = &cpu->env; | |
181 | ||
182 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
183 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
184 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
185 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
186 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
187 | m68k_set_feature(env, M68K_FEATURE_USP); | |
188 | } | |
189 | ||
190 | static void any_cpu_initfn(Object *obj) | |
191 | { | |
192 | M68kCPU *cpu = M68K_CPU(obj); | |
193 | CPUM68KState *env = &cpu->env; | |
194 | ||
195 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); | |
196 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); | |
197 | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); | |
198 | m68k_set_feature(env, M68K_FEATURE_BRAL); | |
199 | m68k_set_feature(env, M68K_FEATURE_CF_FPU); | |
200 | /* MAC and EMAC are mututally exclusive, so pick EMAC. | |
201 | It's mostly backwards compatible. */ | |
202 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); | |
203 | m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); | |
204 | m68k_set_feature(env, M68K_FEATURE_USP); | |
205 | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); | |
206 | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); | |
207 | } | |
208 | ||
209 | typedef struct M68kCPUInfo { | |
210 | const char *name; | |
211 | void (*instance_init)(Object *obj); | |
212 | } M68kCPUInfo; | |
213 | ||
214 | static const M68kCPUInfo m68k_cpus[] = { | |
f076803b LV |
215 | { .name = "m68000", .instance_init = m68000_cpu_initfn }, |
216 | { .name = "m68020", .instance_init = m68020_cpu_initfn }, | |
217 | { .name = "m68030", .instance_init = m68030_cpu_initfn }, | |
218 | { .name = "m68040", .instance_init = m68040_cpu_initfn }, | |
219 | { .name = "m68060", .instance_init = m68060_cpu_initfn }, | |
11150915 AF |
220 | { .name = "m5206", .instance_init = m5206_cpu_initfn }, |
221 | { .name = "m5208", .instance_init = m5208_cpu_initfn }, | |
222 | { .name = "cfv4e", .instance_init = cfv4e_cpu_initfn }, | |
223 | { .name = "any", .instance_init = any_cpu_initfn }, | |
224 | }; | |
225 | ||
6d1bbc62 AF |
226 | static void m68k_cpu_realizefn(DeviceState *dev, Error **errp) |
227 | { | |
14a10fc3 | 228 | CPUState *cs = CPU(dev); |
6d1bbc62 AF |
229 | M68kCPU *cpu = M68K_CPU(dev); |
230 | M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev); | |
ce5b1bbf LV |
231 | Error *local_err = NULL; |
232 | ||
233 | cpu_exec_realizefn(cs, &local_err); | |
234 | if (local_err != NULL) { | |
235 | error_propagate(errp, local_err); | |
236 | return; | |
237 | } | |
6d1bbc62 AF |
238 | |
239 | m68k_cpu_init_gdb(cpu); | |
240 | ||
14a10fc3 AF |
241 | cpu_reset(cs); |
242 | qemu_init_vcpu(cs); | |
6d1bbc62 AF |
243 | |
244 | mcc->parent_realize(dev, errp); | |
245 | } | |
246 | ||
9b706039 AF |
247 | static void m68k_cpu_initfn(Object *obj) |
248 | { | |
c05efcb1 | 249 | CPUState *cs = CPU(obj); |
9b706039 AF |
250 | M68kCPU *cpu = M68K_CPU(obj); |
251 | CPUM68KState *env = &cpu->env; | |
1cc89619 | 252 | static bool inited; |
9b706039 | 253 | |
c05efcb1 | 254 | cs->env_ptr = env; |
1cc89619 AF |
255 | |
256 | if (tcg_enabled() && !inited) { | |
257 | inited = true; | |
258 | m68k_tcg_init(); | |
259 | } | |
9b706039 AF |
260 | } |
261 | ||
087fe4f8 AF |
262 | static const VMStateDescription vmstate_m68k_cpu = { |
263 | .name = "cpu", | |
264 | .unmigratable = 1, | |
265 | }; | |
266 | ||
b9e7a234 AF |
267 | static void m68k_cpu_class_init(ObjectClass *c, void *data) |
268 | { | |
269 | M68kCPUClass *mcc = M68K_CPU_CLASS(c); | |
270 | CPUClass *cc = CPU_CLASS(c); | |
087fe4f8 | 271 | DeviceClass *dc = DEVICE_CLASS(c); |
b9e7a234 | 272 | |
6d1bbc62 AF |
273 | mcc->parent_realize = dc->realize; |
274 | dc->realize = m68k_cpu_realizefn; | |
275 | ||
b9e7a234 AF |
276 | mcc->parent_reset = cc->reset; |
277 | cc->reset = m68k_cpu_reset; | |
bc5b2da3 AF |
278 | |
279 | cc->class_by_name = m68k_cpu_class_by_name; | |
8c2e1b00 | 280 | cc->has_work = m68k_cpu_has_work; |
97a8ea5a | 281 | cc->do_interrupt = m68k_cpu_do_interrupt; |
ab409bb3 | 282 | cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt; |
878096ee | 283 | cc->dump_state = m68k_cpu_dump_state; |
e700604d | 284 | cc->set_pc = m68k_cpu_set_pc; |
5b50e790 AF |
285 | cc->gdb_read_register = m68k_cpu_gdb_read_register; |
286 | cc->gdb_write_register = m68k_cpu_gdb_write_register; | |
7510454e AF |
287 | #ifdef CONFIG_USER_ONLY |
288 | cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault; | |
289 | #else | |
00b941e5 AF |
290 | cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug; |
291 | #endif | |
4f669905 | 292 | cc->disas_set_info = m68k_cpu_disas_set_info; |
00f3fd63 | 293 | |
a0e372f0 | 294 | cc->gdb_num_core_regs = 18; |
5b24c641 | 295 | cc->gdb_core_xml_file = "cf-core.xml"; |
4c315c27 | 296 | |
4f669905 | 297 | dc->vmsd = &vmstate_m68k_cpu; |
b9e7a234 AF |
298 | } |
299 | ||
11150915 AF |
300 | static void register_cpu_type(const M68kCPUInfo *info) |
301 | { | |
302 | TypeInfo type_info = { | |
11150915 AF |
303 | .parent = TYPE_M68K_CPU, |
304 | .instance_init = info->instance_init, | |
305 | }; | |
306 | ||
7a9f812b | 307 | type_info.name = g_strdup_printf("%s-" TYPE_M68K_CPU, info->name); |
2dddbc21 | 308 | type_register(&type_info); |
7a9f812b | 309 | g_free((void *)type_info.name); |
11150915 AF |
310 | } |
311 | ||
b9e7a234 AF |
312 | static const TypeInfo m68k_cpu_type_info = { |
313 | .name = TYPE_M68K_CPU, | |
314 | .parent = TYPE_CPU, | |
315 | .instance_size = sizeof(M68kCPU), | |
9b706039 | 316 | .instance_init = m68k_cpu_initfn, |
11150915 | 317 | .abstract = true, |
b9e7a234 AF |
318 | .class_size = sizeof(M68kCPUClass), |
319 | .class_init = m68k_cpu_class_init, | |
320 | }; | |
321 | ||
322 | static void m68k_cpu_register_types(void) | |
323 | { | |
11150915 AF |
324 | int i; |
325 | ||
b9e7a234 | 326 | type_register_static(&m68k_cpu_type_info); |
11150915 AF |
327 | for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) { |
328 | register_cpu_type(&m68k_cpus[i]); | |
329 | } | |
b9e7a234 AF |
330 | } |
331 | ||
332 | type_init(m68k_cpu_register_types) |