exec: Make ldl_*_phys input an AddressSpace
[qemu.git] / target-s390x / cpu.c
1 /*
2 * QEMU S/390 CPU
3 *
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2011 Alexander Graf
6 * Copyright (c) 2012 SUSE LINUX Products GmbH
7 * Copyright (c) 2012 IBM Corp.
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 * Contributions after 2012-12-11 are licensed under the terms of the
23 * GNU GPL, version 2 or (at your option) any later version.
24 */
25
26 #include "cpu.h"
27 #include "qemu-common.h"
28 #include "qemu/timer.h"
29 #include "hw/hw.h"
30 #ifndef CONFIG_USER_ONLY
31 #include "sysemu/arch_init.h"
32 #endif
33
34 #define CR0_RESET 0xE0UL
35 #define CR14_RESET 0xC2000000UL;
36
37 /* generate CPU information for cpu -? */
38 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
39 {
40 #ifdef CONFIG_KVM
41 (*cpu_fprintf)(f, "s390 %16s\n", "host");
42 #endif
43 }
44
45 #ifndef CONFIG_USER_ONLY
46 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
47 {
48 CpuDefinitionInfoList *entry;
49 CpuDefinitionInfo *info;
50
51 info = g_malloc0(sizeof(*info));
52 info->name = g_strdup("host");
53
54 entry = g_malloc0(sizeof(*entry));
55 entry->value = info;
56
57 return entry;
58 }
59 #endif
60
61 static void s390_cpu_set_pc(CPUState *cs, vaddr value)
62 {
63 S390CPU *cpu = S390_CPU(cs);
64
65 cpu->env.psw.addr = value;
66 }
67
68 #if !defined(CONFIG_USER_ONLY)
69 /* S390CPUClass::load_normal() */
70 static void s390_cpu_load_normal(CPUState *s)
71 {
72 S390CPU *cpu = S390_CPU(s);
73 cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
74 cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
75 s390_add_running_cpu(cpu);
76 }
77 #endif
78
79 /* S390CPUClass::cpu_reset() */
80 static void s390_cpu_reset(CPUState *s)
81 {
82 S390CPU *cpu = S390_CPU(s);
83 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
84 CPUS390XState *env = &cpu->env;
85
86 s390_del_running_cpu(cpu);
87 scc->parent_reset(s);
88 #if !defined(CONFIG_USER_ONLY)
89 s->halted = 1;
90 #endif
91 tlb_flush(env, 1);
92 }
93
94 /* S390CPUClass::initial_reset() */
95 static void s390_cpu_initial_reset(CPUState *s)
96 {
97 S390CPU *cpu = S390_CPU(s);
98 CPUS390XState *env = &cpu->env;
99
100 s390_cpu_reset(s);
101 /* initial reset does not touch regs,fregs and aregs */
102 memset(&env->fpc, 0, offsetof(CPUS390XState, breakpoints) -
103 offsetof(CPUS390XState, fpc));
104
105 /* architectured initial values for CR 0 and 14 */
106 env->cregs[0] = CR0_RESET;
107 env->cregs[14] = CR14_RESET;
108 }
109
110 /* CPUClass:reset() */
111 static void s390_cpu_full_reset(CPUState *s)
112 {
113 S390CPU *cpu = S390_CPU(s);
114 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
115 CPUS390XState *env = &cpu->env;
116
117 s390_del_running_cpu(cpu);
118
119 scc->parent_reset(s);
120
121 memset(env, 0, offsetof(CPUS390XState, breakpoints));
122
123 /* architectured initial values for CR 0 and 14 */
124 env->cregs[0] = CR0_RESET;
125 env->cregs[14] = CR14_RESET;
126 /* set halted to 1 to make sure we can add the cpu in
127 * s390_ipl_cpu code, where CPUState::halted is set back to 0
128 * after incrementing the cpu counter */
129 #if !defined(CONFIG_USER_ONLY)
130 s->halted = 1;
131 #endif
132 tlb_flush(env, 1);
133 }
134
135 #if !defined(CONFIG_USER_ONLY)
136 static void s390_cpu_machine_reset_cb(void *opaque)
137 {
138 S390CPU *cpu = opaque;
139
140 cpu_reset(CPU(cpu));
141 }
142 #endif
143
144 static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
145 {
146 CPUState *cs = CPU(dev);
147 S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
148
149 qemu_init_vcpu(cs);
150 cpu_reset(cs);
151
152 scc->parent_realize(dev, errp);
153 }
154
155 static void s390_cpu_initfn(Object *obj)
156 {
157 CPUState *cs = CPU(obj);
158 S390CPU *cpu = S390_CPU(obj);
159 CPUS390XState *env = &cpu->env;
160 static bool inited;
161 static int cpu_num = 0;
162 #if !defined(CONFIG_USER_ONLY)
163 struct tm tm;
164 #endif
165
166 cs->env_ptr = env;
167 cpu_exec_init(env);
168 #if !defined(CONFIG_USER_ONLY)
169 qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
170 qemu_get_timedate(&tm, 0);
171 env->tod_offset = TOD_UNIX_EPOCH +
172 (time2tod(mktimegm(&tm)) * 1000000000ULL);
173 env->tod_basetime = 0;
174 env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
175 env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
176 /* set CPUState::halted state to 1 to avoid decrementing the running
177 * cpu counter in s390_cpu_reset to a negative number at
178 * initial ipl */
179 cs->halted = 1;
180 #endif
181 env->cpu_num = cpu_num++;
182 env->ext_index = -1;
183
184 if (tcg_enabled() && !inited) {
185 inited = true;
186 s390x_translate_init();
187 }
188 }
189
190 static void s390_cpu_finalize(Object *obj)
191 {
192 #if !defined(CONFIG_USER_ONLY)
193 S390CPU *cpu = S390_CPU(obj);
194
195 qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
196 #endif
197 }
198
199 static const VMStateDescription vmstate_s390_cpu = {
200 .name = "cpu",
201 .unmigratable = 1,
202 };
203
204 static void s390_cpu_class_init(ObjectClass *oc, void *data)
205 {
206 S390CPUClass *scc = S390_CPU_CLASS(oc);
207 CPUClass *cc = CPU_CLASS(scc);
208 DeviceClass *dc = DEVICE_CLASS(oc);
209
210 scc->parent_realize = dc->realize;
211 dc->realize = s390_cpu_realizefn;
212
213 scc->parent_reset = cc->reset;
214 #if !defined(CONFIG_USER_ONLY)
215 scc->load_normal = s390_cpu_load_normal;
216 #endif
217 scc->cpu_reset = s390_cpu_reset;
218 scc->initial_cpu_reset = s390_cpu_initial_reset;
219 cc->reset = s390_cpu_full_reset;
220 cc->do_interrupt = s390_cpu_do_interrupt;
221 cc->dump_state = s390_cpu_dump_state;
222 cc->set_pc = s390_cpu_set_pc;
223 cc->gdb_read_register = s390_cpu_gdb_read_register;
224 cc->gdb_write_register = s390_cpu_gdb_write_register;
225 #ifndef CONFIG_USER_ONLY
226 cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
227 cc->write_elf64_note = s390_cpu_write_elf64_note;
228 cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;
229 #endif
230 dc->vmsd = &vmstate_s390_cpu;
231 cc->gdb_num_core_regs = S390_NUM_REGS;
232 }
233
234 static const TypeInfo s390_cpu_type_info = {
235 .name = TYPE_S390_CPU,
236 .parent = TYPE_CPU,
237 .instance_size = sizeof(S390CPU),
238 .instance_init = s390_cpu_initfn,
239 .instance_finalize = s390_cpu_finalize,
240 .abstract = false,
241 .class_size = sizeof(S390CPUClass),
242 .class_init = s390_cpu_class_init,
243 };
244
245 static void s390_cpu_register_types(void)
246 {
247 type_register_static(&s390_cpu_type_info);
248 }
249
250 type_init(s390_cpu_register_types)