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target-xtensa: Clean up ENV_GET_CPU() usage
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CommitLineData
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1/*
2 * QEMU S/390 CPU
3 *
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4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2011 Alexander Graf
29e4bcb2 6 * Copyright (c) 2012 SUSE LINUX Products GmbH
70bada03 7 * Copyright (c) 2012 IBM Corp.
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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>
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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.
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24 */
25
564b863d 26#include "cpu.h"
29e4bcb2 27#include "qemu-common.h"
1de7afc9 28#include "qemu/timer.h"
70bada03 29#include "hw/hw.h"
c7396bbb 30#ifndef CONFIG_USER_ONLY
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31#include "sysemu/arch_init.h"
32#endif
33
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34#define CR0_RESET 0xE0UL
35#define CR14_RESET 0xC2000000UL;
36
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37/* generate CPU information for cpu -? */
38void 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}
29e4bcb2 44
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45#ifndef CONFIG_USER_ONLY
46CpuDefinitionInfoList *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
29e4bcb2 60
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61static 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
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68#if !defined(CONFIG_USER_ONLY)
69/* S390CPUClass::load_normal() */
70static void s390_cpu_load_normal(CPUState *s)
71{
72 S390CPU *cpu = S390_CPU(s);
fdfba1a2 73 cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
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74 cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
75 s390_add_running_cpu(cpu);
76}
77#endif
78
f5ae2a4f 79/* S390CPUClass::cpu_reset() */
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80static 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
819bd309 86 env->pfault_token = -1UL;
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87 s390_del_running_cpu(cpu);
88 scc->parent_reset(s);
89#if !defined(CONFIG_USER_ONLY)
90 s->halted = 1;
91#endif
92 tlb_flush(env, 1);
93}
94
95/* S390CPUClass::initial_reset() */
96static void s390_cpu_initial_reset(CPUState *s)
97{
98 S390CPU *cpu = S390_CPU(s);
99 CPUS390XState *env = &cpu->env;
100
101 s390_cpu_reset(s);
102 /* initial reset does not touch regs,fregs and aregs */
103 memset(&env->fpc, 0, offsetof(CPUS390XState, breakpoints) -
104 offsetof(CPUS390XState, fpc));
105
106 /* architectured initial values for CR 0 and 14 */
107 env->cregs[0] = CR0_RESET;
108 env->cregs[14] = CR14_RESET;
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109
110 env->pfault_token = -1UL;
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111
112#if defined(CONFIG_KVM)
113 /* Reset state inside the kernel that we cannot access yet from QEMU. */
114 if (kvm_enabled()) {
115 if (kvm_vcpu_ioctl(s, KVM_S390_INITIAL_RESET, NULL)) {
116 perror("Initial CPU reset failed");
117 }
118 }
119#endif
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120}
121
122/* CPUClass:reset() */
123static void s390_cpu_full_reset(CPUState *s)
124{
125 S390CPU *cpu = S390_CPU(s);
126 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
127 CPUS390XState *env = &cpu->env;
128
49e15878 129 s390_del_running_cpu(cpu);
70bada03 130
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131 scc->parent_reset(s);
132
1ac1a749 133 memset(env, 0, offsetof(CPUS390XState, breakpoints));
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134
135 /* architectured initial values for CR 0 and 14 */
136 env->cregs[0] = CR0_RESET;
137 env->cregs[14] = CR14_RESET;
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138
139 env->pfault_token = -1UL;
140
70bada03 141 /* set halted to 1 to make sure we can add the cpu in
259186a7 142 * s390_ipl_cpu code, where CPUState::halted is set back to 0
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143 * after incrementing the cpu counter */
144#if !defined(CONFIG_USER_ONLY)
259186a7 145 s->halted = 1;
70bada03 146#endif
1ac1a749 147 tlb_flush(env, 1);
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148}
149
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150#if !defined(CONFIG_USER_ONLY)
151static void s390_cpu_machine_reset_cb(void *opaque)
152{
153 S390CPU *cpu = opaque;
154
155 cpu_reset(CPU(cpu));
156}
157#endif
158
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159static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
160{
14a10fc3 161 CPUState *cs = CPU(dev);
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162 S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
163
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164 qemu_init_vcpu(cs);
165 cpu_reset(cs);
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166
167 scc->parent_realize(dev, errp);
168}
169
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170static void s390_cpu_initfn(Object *obj)
171{
c05efcb1 172 CPUState *cs = CPU(obj);
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173 S390CPU *cpu = S390_CPU(obj);
174 CPUS390XState *env = &cpu->env;
2b7ac767 175 static bool inited;
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176 static int cpu_num = 0;
177#if !defined(CONFIG_USER_ONLY)
178 struct tm tm;
179#endif
180
c05efcb1 181 cs->env_ptr = env;
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182 cpu_exec_init(env);
183#if !defined(CONFIG_USER_ONLY)
70bada03 184 qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
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185 qemu_get_timedate(&tm, 0);
186 env->tod_offset = TOD_UNIX_EPOCH +
187 (time2tod(mktimegm(&tm)) * 1000000000ULL);
188 env->tod_basetime = 0;
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189 env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
190 env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
259186a7 191 /* set CPUState::halted state to 1 to avoid decrementing the running
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192 * cpu counter in s390_cpu_reset to a negative number at
193 * initial ipl */
259186a7 194 cs->halted = 1;
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195#endif
196 env->cpu_num = cpu_num++;
197 env->ext_index = -1;
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198
199 if (tcg_enabled() && !inited) {
200 inited = true;
201 s390x_translate_init();
202 }
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203}
204
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205static void s390_cpu_finalize(Object *obj)
206{
207#if !defined(CONFIG_USER_ONLY)
208 S390CPU *cpu = S390_CPU(obj);
209
210 qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
211#endif
212}
213
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214static const VMStateDescription vmstate_s390_cpu = {
215 .name = "cpu",
216 .unmigratable = 1,
217};
218
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219static void s390_cpu_class_init(ObjectClass *oc, void *data)
220{
221 S390CPUClass *scc = S390_CPU_CLASS(oc);
222 CPUClass *cc = CPU_CLASS(scc);
c7396bbb 223 DeviceClass *dc = DEVICE_CLASS(oc);
29e4bcb2 224
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225 scc->parent_realize = dc->realize;
226 dc->realize = s390_cpu_realizefn;
227
29e4bcb2 228 scc->parent_reset = cc->reset;
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229#if !defined(CONFIG_USER_ONLY)
230 scc->load_normal = s390_cpu_load_normal;
231#endif
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232 scc->cpu_reset = s390_cpu_reset;
233 scc->initial_cpu_reset = s390_cpu_initial_reset;
234 cc->reset = s390_cpu_full_reset;
97a8ea5a 235 cc->do_interrupt = s390_cpu_do_interrupt;
878096ee 236 cc->dump_state = s390_cpu_dump_state;
f45748f1 237 cc->set_pc = s390_cpu_set_pc;
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238 cc->gdb_read_register = s390_cpu_gdb_read_register;
239 cc->gdb_write_register = s390_cpu_gdb_write_register;
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240#ifndef CONFIG_USER_ONLY
241 cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
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242 cc->write_elf64_note = s390_cpu_write_elf64_note;
243 cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;
00b941e5 244#endif
c7396bbb 245 dc->vmsd = &vmstate_s390_cpu;
a0e372f0 246 cc->gdb_num_core_regs = S390_NUM_REGS;
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247}
248
249static const TypeInfo s390_cpu_type_info = {
250 .name = TYPE_S390_CPU,
251 .parent = TYPE_CPU,
252 .instance_size = sizeof(S390CPU),
8f22e0df 253 .instance_init = s390_cpu_initfn,
d5627ce8 254 .instance_finalize = s390_cpu_finalize,
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255 .abstract = false,
256 .class_size = sizeof(S390CPUClass),
257 .class_init = s390_cpu_class_init,
258};
259
260static void s390_cpu_register_types(void)
261{
262 type_register_static(&s390_cpu_type_info);
263}
264
265type_init(s390_cpu_register_types)