docs/qdev-device-use: Don't suggest -drive and -net can do USB
[qemu.git] / target / m68k / cpu.c
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 "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "cpu.h"
24 #include "migration/vmstate.h"
25 #include "fpu/softfloat.h"
26
27 static void m68k_cpu_set_pc(CPUState *cs, vaddr value)
28 {
29 M68kCPU *cpu = M68K_CPU(cs);
30
31 cpu->env.pc = value;
32 }
33
34 static bool m68k_cpu_has_work(CPUState *cs)
35 {
36 return cs->interrupt_request & CPU_INTERRUPT_HARD;
37 }
38
39 static void m68k_set_feature(CPUM68KState *env, int feature)
40 {
41 env->features |= (1u << feature);
42 }
43
44 static void m68k_cpu_reset(DeviceState *dev)
45 {
46 CPUState *s = CPU(dev);
47 M68kCPU *cpu = M68K_CPU(s);
48 M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu);
49 CPUM68KState *env = &cpu->env;
50 floatx80 nan = floatx80_default_nan(NULL);
51 int i;
52
53 mcc->parent_reset(dev);
54
55 memset(env, 0, offsetof(CPUM68KState, end_reset_fields));
56 #ifdef CONFIG_SOFTMMU
57 cpu_m68k_set_sr(env, SR_S | SR_I);
58 #else
59 cpu_m68k_set_sr(env, 0);
60 #endif
61 for (i = 0; i < 8; i++) {
62 env->fregs[i].d = nan;
63 }
64 cpu_m68k_set_fpcr(env, 0);
65 env->fpsr = 0;
66
67 /* TODO: We should set PC from the interrupt vector. */
68 env->pc = 0;
69 }
70
71 static void m68k_cpu_disas_set_info(CPUState *s, disassemble_info *info)
72 {
73 M68kCPU *cpu = M68K_CPU(s);
74 CPUM68KState *env = &cpu->env;
75 info->print_insn = print_insn_m68k;
76 if (m68k_feature(env, M68K_FEATURE_M68000)) {
77 info->mach = bfd_mach_m68040;
78 }
79 }
80
81 /* CPU models */
82
83 static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model)
84 {
85 ObjectClass *oc;
86 char *typename;
87
88 typename = g_strdup_printf(M68K_CPU_TYPE_NAME("%s"), cpu_model);
89 oc = object_class_by_name(typename);
90 g_free(typename);
91 if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL ||
92 object_class_is_abstract(oc))) {
93 return NULL;
94 }
95 return oc;
96 }
97
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
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 m68k_set_feature(env, M68K_FEATURE_MOVEP);
115 }
116
117 /* common features for 68020, 68030 and 68040 */
118 static void m680x0_cpu_common(CPUM68KState *env)
119 {
120 m68k_set_feature(env, M68K_FEATURE_M68000);
121 m68k_set_feature(env, M68K_FEATURE_USP);
122 m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
123 m68k_set_feature(env, M68K_FEATURE_QUAD_MULDIV);
124 m68k_set_feature(env, M68K_FEATURE_BRAL);
125 m68k_set_feature(env, M68K_FEATURE_BCCL);
126 m68k_set_feature(env, M68K_FEATURE_BITFIELD);
127 m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
128 m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX);
129 m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV);
130 m68k_set_feature(env, M68K_FEATURE_FPU);
131 m68k_set_feature(env, M68K_FEATURE_CAS);
132 m68k_set_feature(env, M68K_FEATURE_BKPT);
133 m68k_set_feature(env, M68K_FEATURE_RTD);
134 m68k_set_feature(env, M68K_FEATURE_CHK2);
135 m68k_set_feature(env, M68K_FEATURE_MOVEP);
136 }
137
138 static void m68020_cpu_initfn(Object *obj)
139 {
140 M68kCPU *cpu = M68K_CPU(obj);
141 CPUM68KState *env = &cpu->env;
142
143 m680x0_cpu_common(env);
144 m68k_set_feature(env, M68K_FEATURE_M68020);
145 }
146
147 static void m68030_cpu_initfn(Object *obj)
148 {
149 M68kCPU *cpu = M68K_CPU(obj);
150 CPUM68KState *env = &cpu->env;
151
152 m680x0_cpu_common(env);
153 m68k_set_feature(env, M68K_FEATURE_M68030);
154 }
155
156 static void m68040_cpu_initfn(Object *obj)
157 {
158 M68kCPU *cpu = M68K_CPU(obj);
159 CPUM68KState *env = &cpu->env;
160
161 m680x0_cpu_common(env);
162 m68k_set_feature(env, M68K_FEATURE_M68040);
163 }
164
165 static void m68060_cpu_initfn(Object *obj)
166 {
167 M68kCPU *cpu = M68K_CPU(obj);
168 CPUM68KState *env = &cpu->env;
169
170 m68k_set_feature(env, M68K_FEATURE_M68000);
171 m68k_set_feature(env, M68K_FEATURE_USP);
172 m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
173 m68k_set_feature(env, M68K_FEATURE_BRAL);
174 m68k_set_feature(env, M68K_FEATURE_BCCL);
175 m68k_set_feature(env, M68K_FEATURE_BITFIELD);
176 m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
177 m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX);
178 m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV);
179 m68k_set_feature(env, M68K_FEATURE_FPU);
180 m68k_set_feature(env, M68K_FEATURE_CAS);
181 m68k_set_feature(env, M68K_FEATURE_BKPT);
182 m68k_set_feature(env, M68K_FEATURE_RTD);
183 m68k_set_feature(env, M68K_FEATURE_CHK2);
184 m68k_set_feature(env, M68K_FEATURE_M68060);
185 }
186
187 static void m5208_cpu_initfn(Object *obj)
188 {
189 M68kCPU *cpu = M68K_CPU(obj);
190 CPUM68KState *env = &cpu->env;
191
192 m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
193 m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
194 m68k_set_feature(env, M68K_FEATURE_BRAL);
195 m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
196 m68k_set_feature(env, M68K_FEATURE_USP);
197 }
198
199 static void cfv4e_cpu_initfn(Object *obj)
200 {
201 M68kCPU *cpu = M68K_CPU(obj);
202 CPUM68KState *env = &cpu->env;
203
204 m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
205 m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
206 m68k_set_feature(env, M68K_FEATURE_BRAL);
207 m68k_set_feature(env, M68K_FEATURE_CF_FPU);
208 m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
209 m68k_set_feature(env, M68K_FEATURE_USP);
210 }
211
212 static void any_cpu_initfn(Object *obj)
213 {
214 M68kCPU *cpu = M68K_CPU(obj);
215 CPUM68KState *env = &cpu->env;
216
217 m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
218 m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
219 m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
220 m68k_set_feature(env, M68K_FEATURE_BRAL);
221 m68k_set_feature(env, M68K_FEATURE_CF_FPU);
222 /*
223 * MAC and EMAC are mututally exclusive, so pick EMAC.
224 * It's mostly backwards compatible.
225 */
226 m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
227 m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B);
228 m68k_set_feature(env, M68K_FEATURE_USP);
229 m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
230 m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
231 }
232
233 static void m68k_cpu_realizefn(DeviceState *dev, Error **errp)
234 {
235 CPUState *cs = CPU(dev);
236 M68kCPU *cpu = M68K_CPU(dev);
237 M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev);
238 Error *local_err = NULL;
239
240 register_m68k_insns(&cpu->env);
241
242 cpu_exec_realizefn(cs, &local_err);
243 if (local_err != NULL) {
244 error_propagate(errp, local_err);
245 return;
246 }
247
248 m68k_cpu_init_gdb(cpu);
249
250 cpu_reset(cs);
251 qemu_init_vcpu(cs);
252
253 mcc->parent_realize(dev, errp);
254 }
255
256 static void m68k_cpu_initfn(Object *obj)
257 {
258 M68kCPU *cpu = M68K_CPU(obj);
259
260 cpu_set_cpustate_pointers(cpu);
261 }
262
263 static const VMStateDescription vmstate_m68k_cpu = {
264 .name = "cpu",
265 .unmigratable = 1,
266 };
267
268 static void m68k_cpu_class_init(ObjectClass *c, void *data)
269 {
270 M68kCPUClass *mcc = M68K_CPU_CLASS(c);
271 CPUClass *cc = CPU_CLASS(c);
272 DeviceClass *dc = DEVICE_CLASS(c);
273
274 device_class_set_parent_realize(dc, m68k_cpu_realizefn,
275 &mcc->parent_realize);
276 device_class_set_parent_reset(dc, m68k_cpu_reset, &mcc->parent_reset);
277
278 cc->class_by_name = m68k_cpu_class_by_name;
279 cc->has_work = m68k_cpu_has_work;
280 cc->do_interrupt = m68k_cpu_do_interrupt;
281 cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt;
282 cc->dump_state = m68k_cpu_dump_state;
283 cc->set_pc = m68k_cpu_set_pc;
284 cc->gdb_read_register = m68k_cpu_gdb_read_register;
285 cc->gdb_write_register = m68k_cpu_gdb_write_register;
286 cc->tlb_fill = m68k_cpu_tlb_fill;
287 #if defined(CONFIG_SOFTMMU)
288 cc->do_transaction_failed = m68k_cpu_transaction_failed;
289 cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug;
290 #endif
291 cc->disas_set_info = m68k_cpu_disas_set_info;
292 cc->tcg_initialize = m68k_tcg_init;
293
294 cc->gdb_num_core_regs = 18;
295
296 dc->vmsd = &vmstate_m68k_cpu;
297 }
298
299 static void m68k_cpu_class_init_cf_core(ObjectClass *c, void *data)
300 {
301 CPUClass *cc = CPU_CLASS(c);
302
303 cc->gdb_core_xml_file = "cf-core.xml";
304 }
305
306 #define DEFINE_M68K_CPU_TYPE_CF(model) \
307 { \
308 .name = M68K_CPU_TYPE_NAME(#model), \
309 .instance_init = model##_cpu_initfn, \
310 .parent = TYPE_M68K_CPU, \
311 .class_init = m68k_cpu_class_init_cf_core \
312 }
313
314 static void m68k_cpu_class_init_m68k_core(ObjectClass *c, void *data)
315 {
316 CPUClass *cc = CPU_CLASS(c);
317
318 cc->gdb_core_xml_file = "m68k-core.xml";
319 }
320
321 #define DEFINE_M68K_CPU_TYPE_M68K(model) \
322 { \
323 .name = M68K_CPU_TYPE_NAME(#model), \
324 .instance_init = model##_cpu_initfn, \
325 .parent = TYPE_M68K_CPU, \
326 .class_init = m68k_cpu_class_init_m68k_core \
327 }
328
329 static const TypeInfo m68k_cpus_type_infos[] = {
330 { /* base class should be registered first */
331 .name = TYPE_M68K_CPU,
332 .parent = TYPE_CPU,
333 .instance_size = sizeof(M68kCPU),
334 .instance_init = m68k_cpu_initfn,
335 .abstract = true,
336 .class_size = sizeof(M68kCPUClass),
337 .class_init = m68k_cpu_class_init,
338 },
339 DEFINE_M68K_CPU_TYPE_M68K(m68000),
340 DEFINE_M68K_CPU_TYPE_M68K(m68020),
341 DEFINE_M68K_CPU_TYPE_M68K(m68030),
342 DEFINE_M68K_CPU_TYPE_M68K(m68040),
343 DEFINE_M68K_CPU_TYPE_M68K(m68060),
344 DEFINE_M68K_CPU_TYPE_CF(m5206),
345 DEFINE_M68K_CPU_TYPE_CF(m5208),
346 DEFINE_M68K_CPU_TYPE_CF(cfv4e),
347 DEFINE_M68K_CPU_TYPE_CF(any),
348 };
349
350 DEFINE_TYPES(m68k_cpus_type_infos)