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Andreas Färbere739a482012-04-11 23:12:05 +02001/*
2 * QEMU CRIS CPU
3 *
Andreas Färber1c3b52f2012-04-11 23:35:40 +02004 * Copyright (c) 2008 AXIS Communications AB
5 * Written by Edgar E. Iglesias.
6 *
Andreas Färbere739a482012-04-11 23:12:05 +02007 * 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
Peter Maydell23b0d7d2016-01-26 18:17:24 +000024#include "qemu/osdep.h"
Andreas Färbere739a482012-04-11 23:12:05 +020025#include "cpu.h"
26#include "qemu-common.h"
Andreas Färber1c3b52f2012-04-11 23:35:40 +020027#include "mmu.h"
Andreas Färbere739a482012-04-11 23:12:05 +020028
29
Andreas Färberf45748f2013-06-21 19:09:18 +020030static void cris_cpu_set_pc(CPUState *cs, vaddr value)
31{
32 CRISCPU *cpu = CRIS_CPU(cs);
33
34 cpu->env.pc = value;
35}
36
Andreas Färber8c2e1b02013-08-25 18:53:55 +020037static bool cris_cpu_has_work(CPUState *cs)
38{
39 return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
40}
41
Andreas Färbere739a482012-04-11 23:12:05 +020042/* CPUClass::reset() */
43static void cris_cpu_reset(CPUState *s)
44{
45 CRISCPU *cpu = CRIS_CPU(s);
46 CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu);
47 CPUCRISState *env = &cpu->env;
Andreas Färber1c3b52f2012-04-11 23:35:40 +020048 uint32_t vr;
49
Andreas Färbere739a482012-04-11 23:12:05 +020050 ccc->parent_reset(s);
51
Andreas Färber1c3b52f2012-04-11 23:35:40 +020052 vr = env->pregs[PR_VR];
Andreas Färberf0c3c502013-08-26 21:22:53 +020053 memset(env, 0, offsetof(CPUCRISState, load_info));
Andreas Färber1c3b52f2012-04-11 23:35:40 +020054 env->pregs[PR_VR] = vr;
Andreas Färber00c8cb02013-09-04 02:19:44 +020055 tlb_flush(s, 1);
Andreas Färber1c3b52f2012-04-11 23:35:40 +020056
57#if defined(CONFIG_USER_ONLY)
58 /* start in user mode with interrupts enabled. */
59 env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG;
60#else
61 cris_mmu_init(env);
62 env->pregs[PR_CCS] = 0;
63#endif
Andreas Färbere739a482012-04-11 23:12:05 +020064}
65
Andreas Färber6ae064f2013-02-06 17:18:12 +010066static ObjectClass *cris_cpu_class_by_name(const char *cpu_model)
67{
68 ObjectClass *oc;
69 char *typename;
70
71 if (cpu_model == NULL) {
72 return NULL;
73 }
74
Edgar E. Iglesiasfd5d5af2014-01-18 03:42:23 +000075#if defined(CONFIG_USER_ONLY)
76 if (strcasecmp(cpu_model, "any") == 0) {
77 return object_class_by_name("crisv32-" TYPE_CRIS_CPU);
78 }
79#endif
80
Andreas Färber6ae064f2013-02-06 17:18:12 +010081 typename = g_strdup_printf("%s-" TYPE_CRIS_CPU, cpu_model);
82 oc = object_class_by_name(typename);
83 g_free(typename);
84 if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_CRIS_CPU) ||
85 object_class_is_abstract(oc))) {
86 oc = NULL;
87 }
88 return oc;
89}
90
91CRISCPU *cpu_cris_init(const char *cpu_model)
92{
Andreas Färber92626852014-03-04 03:17:10 +010093 return CRIS_CPU(cpu_generic_init(TYPE_CRIS_CPU, cpu_model));
Andreas Färber6ae064f2013-02-06 17:18:12 +010094}
95
96/* Sort alphabetically by VR. */
97static gint cris_cpu_list_compare(gconstpointer a, gconstpointer b)
98{
99 CRISCPUClass *ccc_a = CRIS_CPU_CLASS(a);
100 CRISCPUClass *ccc_b = CRIS_CPU_CLASS(b);
101
102 /* */
103 if (ccc_a->vr > ccc_b->vr) {
104 return 1;
105 } else if (ccc_a->vr < ccc_b->vr) {
106 return -1;
107 } else {
108 return 0;
109 }
110}
111
112static void cris_cpu_list_entry(gpointer data, gpointer user_data)
113{
114 ObjectClass *oc = data;
115 CPUListState *s = user_data;
116 const char *typename = object_class_get_name(oc);
117 char *name;
118
119 name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_CRIS_CPU));
120 (*s->cpu_fprintf)(s->file, " %s\n", name);
121 g_free(name);
122}
123
124void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf)
125{
126 CPUListState s = {
127 .file = f,
128 .cpu_fprintf = cpu_fprintf,
129 };
130 GSList *list;
131
132 list = object_class_get_list(TYPE_CRIS_CPU, false);
133 list = g_slist_sort(list, cris_cpu_list_compare);
134 (*cpu_fprintf)(f, "Available CPUs:\n");
135 g_slist_foreach(list, cris_cpu_list_entry, &s);
136 g_slist_free(list);
137}
138
Andreas Färberca45f8b2013-01-05 15:41:21 +0100139static void cris_cpu_realizefn(DeviceState *dev, Error **errp)
140{
Andreas Färber14a10fc2013-07-27 02:53:25 +0200141 CPUState *cs = CPU(dev);
Andreas Färberca45f8b2013-01-05 15:41:21 +0100142 CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev);
143
Andreas Färber14a10fc2013-07-27 02:53:25 +0200144 cpu_reset(cs);
145 qemu_init_vcpu(cs);
Andreas Färberca45f8b2013-01-05 15:41:21 +0100146
147 ccc->parent_realize(dev, errp);
148}
149
Edgar E. Iglesias30658392014-01-21 22:44:23 +1000150#ifndef CONFIG_USER_ONLY
151static void cris_cpu_set_irq(void *opaque, int irq, int level)
152{
153 CRISCPU *cpu = opaque;
154 CPUState *cs = CPU(cpu);
155 int type = irq == CRIS_CPU_IRQ ? CPU_INTERRUPT_HARD : CPU_INTERRUPT_NMI;
156
157 if (level) {
158 cpu_interrupt(cs, type);
159 } else {
160 cpu_reset_interrupt(cs, type);
161 }
162}
163#endif
164
Peter Crosthwaite6b625fd2015-06-23 20:57:38 -0700165static void cris_disas_set_info(CPUState *cpu, disassemble_info *info)
166{
167 CRISCPU *cc = CRIS_CPU(cpu);
168 CPUCRISState *env = &cc->env;
169
170 if (env->pregs[PR_VR] != 32) {
171 info->mach = bfd_mach_cris_v0_v10;
172 info->print_insn = print_insn_crisv10;
173 } else {
174 info->mach = bfd_mach_cris_v32;
175 info->print_insn = print_insn_crisv32;
176 }
177}
178
Andreas Färberaa0d1262012-04-11 23:41:06 +0200179static void cris_cpu_initfn(Object *obj)
180{
Andreas Färberc05efcb2013-01-17 12:13:41 +0100181 CPUState *cs = CPU(obj);
Andreas Färberaa0d1262012-04-11 23:41:06 +0200182 CRISCPU *cpu = CRIS_CPU(obj);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100183 CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(obj);
Andreas Färberaa0d1262012-04-11 23:41:06 +0200184 CPUCRISState *env = &cpu->env;
Andreas Färberd1a94fe2013-01-19 23:55:42 +0100185 static bool tcg_initialized;
Andreas Färberaa0d1262012-04-11 23:41:06 +0200186
Andreas Färberc05efcb2013-01-17 12:13:41 +0100187 cs->env_ptr = env;
Peter Crosthwaite4bad9e32015-06-23 19:31:18 -0700188 cpu_exec_init(cs, &error_abort);
Andreas Färberd1a94fe2013-01-19 23:55:42 +0100189
Andreas Färber6ae064f2013-02-06 17:18:12 +0100190 env->pregs[PR_VR] = ccc->vr;
191
Edgar E. Iglesias30658392014-01-21 22:44:23 +1000192#ifndef CONFIG_USER_ONLY
193 /* IRQ and NMI lines. */
194 qdev_init_gpio_in(DEVICE(cpu), cris_cpu_set_irq, 2);
195#endif
196
Andreas Färberd1a94fe2013-01-19 23:55:42 +0100197 if (tcg_enabled() && !tcg_initialized) {
198 tcg_initialized = true;
199 if (env->pregs[PR_VR] < 32) {
200 cris_initialize_crisv10_tcg();
201 } else {
202 cris_initialize_tcg();
203 }
204 }
Andreas Färberaa0d1262012-04-11 23:41:06 +0200205}
206
Andreas Färber6ae064f2013-02-06 17:18:12 +0100207static void crisv8_cpu_class_init(ObjectClass *oc, void *data)
208{
Andreas Färberb21bfee2013-02-18 19:59:39 +0100209 CPUClass *cc = CPU_CLASS(oc);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100210 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
211
212 ccc->vr = 8;
Andreas Färberb21bfee2013-02-18 19:59:39 +0100213 cc->do_interrupt = crisv10_cpu_do_interrupt;
Andreas Färber90431222013-07-07 14:39:41 +0200214 cc->gdb_read_register = crisv10_cpu_gdb_read_register;
Andreas Färber6ae064f2013-02-06 17:18:12 +0100215}
216
217static void crisv9_cpu_class_init(ObjectClass *oc, void *data)
218{
Andreas Färberb21bfee2013-02-18 19:59:39 +0100219 CPUClass *cc = CPU_CLASS(oc);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100220 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
221
222 ccc->vr = 9;
Andreas Färberb21bfee2013-02-18 19:59:39 +0100223 cc->do_interrupt = crisv10_cpu_do_interrupt;
Andreas Färber90431222013-07-07 14:39:41 +0200224 cc->gdb_read_register = crisv10_cpu_gdb_read_register;
Andreas Färber6ae064f2013-02-06 17:18:12 +0100225}
226
227static void crisv10_cpu_class_init(ObjectClass *oc, void *data)
228{
Andreas Färberb21bfee2013-02-18 19:59:39 +0100229 CPUClass *cc = CPU_CLASS(oc);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100230 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
231
232 ccc->vr = 10;
Andreas Färberb21bfee2013-02-18 19:59:39 +0100233 cc->do_interrupt = crisv10_cpu_do_interrupt;
Andreas Färber90431222013-07-07 14:39:41 +0200234 cc->gdb_read_register = crisv10_cpu_gdb_read_register;
Andreas Färber6ae064f2013-02-06 17:18:12 +0100235}
236
237static void crisv11_cpu_class_init(ObjectClass *oc, void *data)
238{
Andreas Färberb21bfee2013-02-18 19:59:39 +0100239 CPUClass *cc = CPU_CLASS(oc);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100240 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
241
242 ccc->vr = 11;
Andreas Färberb21bfee2013-02-18 19:59:39 +0100243 cc->do_interrupt = crisv10_cpu_do_interrupt;
Andreas Färber90431222013-07-07 14:39:41 +0200244 cc->gdb_read_register = crisv10_cpu_gdb_read_register;
Andreas Färber6ae064f2013-02-06 17:18:12 +0100245}
246
247static void crisv32_cpu_class_init(ObjectClass *oc, void *data)
248{
249 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
250
251 ccc->vr = 32;
252}
253
254#define TYPE(model) model "-" TYPE_CRIS_CPU
255
256static const TypeInfo cris_cpu_model_type_infos[] = {
257 {
258 .name = TYPE("crisv8"),
259 .parent = TYPE_CRIS_CPU,
260 .class_init = crisv8_cpu_class_init,
261 }, {
262 .name = TYPE("crisv9"),
263 .parent = TYPE_CRIS_CPU,
264 .class_init = crisv9_cpu_class_init,
265 }, {
266 .name = TYPE("crisv10"),
267 .parent = TYPE_CRIS_CPU,
268 .class_init = crisv10_cpu_class_init,
269 }, {
270 .name = TYPE("crisv11"),
271 .parent = TYPE_CRIS_CPU,
272 .class_init = crisv11_cpu_class_init,
273 }, {
274 .name = TYPE("crisv32"),
275 .parent = TYPE_CRIS_CPU,
276 .class_init = crisv32_cpu_class_init,
277 }
278};
279
280#undef TYPE
281
Andreas Färbere739a482012-04-11 23:12:05 +0200282static void cris_cpu_class_init(ObjectClass *oc, void *data)
283{
Andreas Färberca45f8b2013-01-05 15:41:21 +0100284 DeviceClass *dc = DEVICE_CLASS(oc);
Andreas Färbere739a482012-04-11 23:12:05 +0200285 CPUClass *cc = CPU_CLASS(oc);
286 CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
287
Andreas Färberca45f8b2013-01-05 15:41:21 +0100288 ccc->parent_realize = dc->realize;
289 dc->realize = cris_cpu_realizefn;
290
Andreas Färbere739a482012-04-11 23:12:05 +0200291 ccc->parent_reset = cc->reset;
292 cc->reset = cris_cpu_reset;
Andreas Färber6ae064f2013-02-06 17:18:12 +0100293
294 cc->class_by_name = cris_cpu_class_by_name;
Andreas Färber8c2e1b02013-08-25 18:53:55 +0200295 cc->has_work = cris_cpu_has_work;
Andreas Färber97a8ea52013-02-02 10:57:51 +0100296 cc->do_interrupt = cris_cpu_do_interrupt;
Richard Henderson5a1f7f42014-09-13 09:45:21 -0700297 cc->cpu_exec_interrupt = cris_cpu_exec_interrupt;
Andreas Färber878096e2013-05-27 01:33:50 +0200298 cc->dump_state = cris_cpu_dump_state;
Andreas Färberf45748f2013-06-21 19:09:18 +0200299 cc->set_pc = cris_cpu_set_pc;
Andreas Färber5b50e792013-06-29 04:18:45 +0200300 cc->gdb_read_register = cris_cpu_gdb_read_register;
301 cc->gdb_write_register = cris_cpu_gdb_write_register;
Andreas Färber75104542013-08-26 03:01:33 +0200302#ifdef CONFIG_USER_ONLY
303 cc->handle_mmu_fault = cris_cpu_handle_mmu_fault;
304#else
Andreas Färber00b941e2013-06-29 18:55:54 +0200305 cc->get_phys_page_debug = cris_cpu_get_phys_page_debug;
Juan Quintela16a1b6e2012-05-04 12:54:34 +0200306 dc->vmsd = &vmstate_cris_cpu;
Andreas Färber00b941e2013-06-29 18:55:54 +0200307#endif
Andreas Färbera0e372f2013-06-28 23:18:47 +0200308
309 cc->gdb_num_core_regs = 49;
Peter Maydell2472b6c2014-09-12 19:04:17 +0100310 cc->gdb_stop_before_watchpoint = true;
Peter Crosthwaite6b625fd2015-06-23 20:57:38 -0700311
312 cc->disas_set_info = cris_disas_set_info;
Markus Armbruster4c315c22015-10-01 10:59:58 +0200313
314 /*
315 * Reason: cris_cpu_initfn() calls cpu_exec_init(), which saves
316 * the object in cpus -> dangling pointer after final
317 * object_unref().
318 */
319 dc->cannot_destroy_with_object_finalize_yet = true;
Andreas Färbere739a482012-04-11 23:12:05 +0200320}
321
322static const TypeInfo cris_cpu_type_info = {
323 .name = TYPE_CRIS_CPU,
324 .parent = TYPE_CPU,
325 .instance_size = sizeof(CRISCPU),
Andreas Färberaa0d1262012-04-11 23:41:06 +0200326 .instance_init = cris_cpu_initfn,
Andreas Färber6ae064f2013-02-06 17:18:12 +0100327 .abstract = true,
Andreas Färbere739a482012-04-11 23:12:05 +0200328 .class_size = sizeof(CRISCPUClass),
329 .class_init = cris_cpu_class_init,
330};
331
332static void cris_cpu_register_types(void)
333{
Andreas Färber6ae064f2013-02-06 17:18:12 +0100334 int i;
335
Andreas Färbere739a482012-04-11 23:12:05 +0200336 type_register_static(&cris_cpu_type_info);
Andreas Färber6ae064f2013-02-06 17:18:12 +0100337 for (i = 0; i < ARRAY_SIZE(cris_cpu_model_type_infos); i++) {
338 type_register_static(&cris_cpu_model_type_infos[i]);
339 }
Andreas Färbere739a482012-04-11 23:12:05 +0200340}
341
342type_init(cris_cpu_register_types)