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1 | /* | |
2 | * QEMU CRIS CPU | |
3 | * | |
4 | * Copyright (c) 2008 AXIS Communications AB | |
5 | * Written by Edgar E. Iglesias. | |
6 | * | |
7 | * Copyright (c) 2012 SUSE LINUX Products GmbH | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, see | |
21 | * <http://www.gnu.org/licenses/lgpl-2.1.html> | |
22 | */ | |
23 | ||
24 | #include "cpu.h" | |
25 | #include "qemu-common.h" | |
26 | #include "mmu.h" | |
27 | ||
28 | ||
29 | static void cris_cpu_set_pc(CPUState *cs, vaddr value) | |
30 | { | |
31 | CRISCPU *cpu = CRIS_CPU(cs); | |
32 | ||
33 | cpu->env.pc = value; | |
34 | } | |
35 | ||
36 | /* CPUClass::reset() */ | |
37 | static void cris_cpu_reset(CPUState *s) | |
38 | { | |
39 | CRISCPU *cpu = CRIS_CPU(s); | |
40 | CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu); | |
41 | CPUCRISState *env = &cpu->env; | |
42 | uint32_t vr; | |
43 | ||
44 | ccc->parent_reset(s); | |
45 | ||
46 | vr = env->pregs[PR_VR]; | |
47 | memset(env, 0, offsetof(CPUCRISState, breakpoints)); | |
48 | env->pregs[PR_VR] = vr; | |
49 | tlb_flush(env, 1); | |
50 | ||
51 | #if defined(CONFIG_USER_ONLY) | |
52 | /* start in user mode with interrupts enabled. */ | |
53 | env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG; | |
54 | #else | |
55 | cris_mmu_init(env); | |
56 | env->pregs[PR_CCS] = 0; | |
57 | #endif | |
58 | } | |
59 | ||
60 | static ObjectClass *cris_cpu_class_by_name(const char *cpu_model) | |
61 | { | |
62 | ObjectClass *oc; | |
63 | char *typename; | |
64 | ||
65 | if (cpu_model == NULL) { | |
66 | return NULL; | |
67 | } | |
68 | ||
69 | typename = g_strdup_printf("%s-" TYPE_CRIS_CPU, cpu_model); | |
70 | oc = object_class_by_name(typename); | |
71 | g_free(typename); | |
72 | if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_CRIS_CPU) || | |
73 | object_class_is_abstract(oc))) { | |
74 | oc = NULL; | |
75 | } | |
76 | return oc; | |
77 | } | |
78 | ||
79 | CRISCPU *cpu_cris_init(const char *cpu_model) | |
80 | { | |
81 | CRISCPU *cpu; | |
82 | ObjectClass *oc; | |
83 | ||
84 | oc = cris_cpu_class_by_name(cpu_model); | |
85 | if (oc == NULL) { | |
86 | return NULL; | |
87 | } | |
88 | cpu = CRIS_CPU(object_new(object_class_get_name(oc))); | |
89 | ||
90 | object_property_set_bool(OBJECT(cpu), true, "realized", NULL); | |
91 | ||
92 | return cpu; | |
93 | } | |
94 | ||
95 | /* Sort alphabetically by VR. */ | |
96 | static gint cris_cpu_list_compare(gconstpointer a, gconstpointer b) | |
97 | { | |
98 | CRISCPUClass *ccc_a = CRIS_CPU_CLASS(a); | |
99 | CRISCPUClass *ccc_b = CRIS_CPU_CLASS(b); | |
100 | ||
101 | /* */ | |
102 | if (ccc_a->vr > ccc_b->vr) { | |
103 | return 1; | |
104 | } else if (ccc_a->vr < ccc_b->vr) { | |
105 | return -1; | |
106 | } else { | |
107 | return 0; | |
108 | } | |
109 | } | |
110 | ||
111 | static void cris_cpu_list_entry(gpointer data, gpointer user_data) | |
112 | { | |
113 | ObjectClass *oc = data; | |
114 | CPUListState *s = user_data; | |
115 | const char *typename = object_class_get_name(oc); | |
116 | char *name; | |
117 | ||
118 | name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_CRIS_CPU)); | |
119 | (*s->cpu_fprintf)(s->file, " %s\n", name); | |
120 | g_free(name); | |
121 | } | |
122 | ||
123 | void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf) | |
124 | { | |
125 | CPUListState s = { | |
126 | .file = f, | |
127 | .cpu_fprintf = cpu_fprintf, | |
128 | }; | |
129 | GSList *list; | |
130 | ||
131 | list = object_class_get_list(TYPE_CRIS_CPU, false); | |
132 | list = g_slist_sort(list, cris_cpu_list_compare); | |
133 | (*cpu_fprintf)(f, "Available CPUs:\n"); | |
134 | g_slist_foreach(list, cris_cpu_list_entry, &s); | |
135 | g_slist_free(list); | |
136 | } | |
137 | ||
138 | static void cris_cpu_realizefn(DeviceState *dev, Error **errp) | |
139 | { | |
140 | CRISCPU *cpu = CRIS_CPU(dev); | |
141 | CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev); | |
142 | ||
143 | cpu_reset(CPU(cpu)); | |
144 | ||
145 | ccc->parent_realize(dev, errp); | |
146 | } | |
147 | ||
148 | static void cris_cpu_initfn(Object *obj) | |
149 | { | |
150 | CPUState *cs = CPU(obj); | |
151 | CRISCPU *cpu = CRIS_CPU(obj); | |
152 | CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(obj); | |
153 | CPUCRISState *env = &cpu->env; | |
154 | static bool tcg_initialized; | |
155 | ||
156 | cs->env_ptr = env; | |
157 | cpu_exec_init(env); | |
158 | ||
159 | env->pregs[PR_VR] = ccc->vr; | |
160 | ||
161 | if (tcg_enabled() && !tcg_initialized) { | |
162 | tcg_initialized = true; | |
163 | if (env->pregs[PR_VR] < 32) { | |
164 | cris_initialize_crisv10_tcg(); | |
165 | } else { | |
166 | cris_initialize_tcg(); | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | static void crisv8_cpu_class_init(ObjectClass *oc, void *data) | |
172 | { | |
173 | CPUClass *cc = CPU_CLASS(oc); | |
174 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
175 | ||
176 | ccc->vr = 8; | |
177 | cc->do_interrupt = crisv10_cpu_do_interrupt; | |
178 | } | |
179 | ||
180 | static void crisv9_cpu_class_init(ObjectClass *oc, void *data) | |
181 | { | |
182 | CPUClass *cc = CPU_CLASS(oc); | |
183 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
184 | ||
185 | ccc->vr = 9; | |
186 | cc->do_interrupt = crisv10_cpu_do_interrupt; | |
187 | } | |
188 | ||
189 | static void crisv10_cpu_class_init(ObjectClass *oc, void *data) | |
190 | { | |
191 | CPUClass *cc = CPU_CLASS(oc); | |
192 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
193 | ||
194 | ccc->vr = 10; | |
195 | cc->do_interrupt = crisv10_cpu_do_interrupt; | |
196 | } | |
197 | ||
198 | static void crisv11_cpu_class_init(ObjectClass *oc, void *data) | |
199 | { | |
200 | CPUClass *cc = CPU_CLASS(oc); | |
201 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
202 | ||
203 | ccc->vr = 11; | |
204 | cc->do_interrupt = crisv10_cpu_do_interrupt; | |
205 | } | |
206 | ||
207 | static void crisv32_cpu_class_init(ObjectClass *oc, void *data) | |
208 | { | |
209 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
210 | ||
211 | ccc->vr = 32; | |
212 | } | |
213 | ||
214 | #define TYPE(model) model "-" TYPE_CRIS_CPU | |
215 | ||
216 | static const TypeInfo cris_cpu_model_type_infos[] = { | |
217 | { | |
218 | .name = TYPE("crisv8"), | |
219 | .parent = TYPE_CRIS_CPU, | |
220 | .class_init = crisv8_cpu_class_init, | |
221 | }, { | |
222 | .name = TYPE("crisv9"), | |
223 | .parent = TYPE_CRIS_CPU, | |
224 | .class_init = crisv9_cpu_class_init, | |
225 | }, { | |
226 | .name = TYPE("crisv10"), | |
227 | .parent = TYPE_CRIS_CPU, | |
228 | .class_init = crisv10_cpu_class_init, | |
229 | }, { | |
230 | .name = TYPE("crisv11"), | |
231 | .parent = TYPE_CRIS_CPU, | |
232 | .class_init = crisv11_cpu_class_init, | |
233 | }, { | |
234 | .name = TYPE("crisv32"), | |
235 | .parent = TYPE_CRIS_CPU, | |
236 | .class_init = crisv32_cpu_class_init, | |
237 | } | |
238 | }; | |
239 | ||
240 | #undef TYPE | |
241 | ||
242 | static void cris_cpu_class_init(ObjectClass *oc, void *data) | |
243 | { | |
244 | DeviceClass *dc = DEVICE_CLASS(oc); | |
245 | CPUClass *cc = CPU_CLASS(oc); | |
246 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); | |
247 | ||
248 | ccc->parent_realize = dc->realize; | |
249 | dc->realize = cris_cpu_realizefn; | |
250 | ||
251 | ccc->parent_reset = cc->reset; | |
252 | cc->reset = cris_cpu_reset; | |
253 | ||
254 | cc->class_by_name = cris_cpu_class_by_name; | |
255 | cc->do_interrupt = cris_cpu_do_interrupt; | |
256 | cc->dump_state = cris_cpu_dump_state; | |
257 | cc->set_pc = cris_cpu_set_pc; | |
258 | } | |
259 | ||
260 | static const TypeInfo cris_cpu_type_info = { | |
261 | .name = TYPE_CRIS_CPU, | |
262 | .parent = TYPE_CPU, | |
263 | .instance_size = sizeof(CRISCPU), | |
264 | .instance_init = cris_cpu_initfn, | |
265 | .abstract = true, | |
266 | .class_size = sizeof(CRISCPUClass), | |
267 | .class_init = cris_cpu_class_init, | |
268 | }; | |
269 | ||
270 | static void cris_cpu_register_types(void) | |
271 | { | |
272 | int i; | |
273 | ||
274 | type_register_static(&cris_cpu_type_info); | |
275 | for (i = 0; i < ARRAY_SIZE(cris_cpu_model_type_infos); i++) { | |
276 | type_register_static(&cris_cpu_model_type_infos[i]); | |
277 | } | |
278 | } | |
279 | ||
280 | type_init(cris_cpu_register_types) |