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  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, see
  20  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  21  */
  22
  23 #include "cpu.h"
  24 #include "qemu-common.h"
  25 #include "qemu/timer.h"
  26
  27
  28 /* CPUClass::reset() */
  29 static void s390_cpu_reset(CPUState *s)
  30 {
  31     S390CPU *cpu = S390_CPU(s);
  32     S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
  33     CPUS390XState *env = &cpu->env;
  34
  35     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
  36         qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
  37         log_cpu_state(env, 0);
  38     }
  39
  40     scc->parent_reset(s);
  41
  42     memset(env, 0, offsetof(CPUS390XState, breakpoints));
  43     /* FIXME: reset vector? */
  44     tlb_flush(env, 1);
  45     s390_add_running_cpu(env);
  46 }
  47
  48 static void s390_cpu_initfn(Object *obj)
  49 {
  50     S390CPU *cpu = S390_CPU(obj);
  51     CPUS390XState *env = &cpu->env;
  52     static int cpu_num = 0;
  53 #if !defined(CONFIG_USER_ONLY)
  54     struct tm tm;
  55 #endif
  56
  57     cpu_exec_init(env);
  58 #if !defined(CONFIG_USER_ONLY)
  59     qemu_get_timedate(&tm, 0);
  60     env->tod_offset = TOD_UNIX_EPOCH +
  61                       (time2tod(mktimegm(&tm)) * 1000000000ULL);
  62     env->tod_basetime = 0;
  63     env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu);
  64     env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu);
  65 #endif
  66     env->cpu_num = cpu_num++;
  67     env->ext_index = -1;
  68
  69     cpu_reset(CPU(cpu));
  70 }
  71
  72 static void s390_cpu_class_init(ObjectClass *oc, void *data)
  73 {
  74     S390CPUClass *scc = S390_CPU_CLASS(oc);
  75     CPUClass *cc = CPU_CLASS(scc);
  76
  77     scc->parent_reset = cc->reset;
  78     cc->reset = s390_cpu_reset;
  79 }
  80
  81 static const TypeInfo s390_cpu_type_info = {
  82     .name = TYPE_S390_CPU,
  83     .parent = TYPE_CPU,
  84     .instance_size = sizeof(S390CPU),
  85     .instance_init = s390_cpu_initfn,
  86     .abstract = false,
  87     .class_size = sizeof(S390CPUClass),
  88     .class_init = s390_cpu_class_init,
  89 };
  90
  91 static void s390_cpu_register_types(void)
  92 {
  93     type_register_static(&s390_cpu_type_info);
  94 }
  95
  96 type_init(s390_cpu_register_types)