target/hppa/cpu.c

   1 /*
   2  * QEMU HPPA CPU
   3  *
   4  * Copyright (c) 2016 Richard Henderson <rth@twiddle.net>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see
  18  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "qapi/error.h"
  23 #include "cpu.h"
  24 #include "qemu-common.h"
  25 #include "migration/vmstate.h"
  26 #include "exec/exec-all.h"
  27
  28
  29 static void hppa_cpu_set_pc(CPUState *cs, vaddr value)
  30 {
  31     HPPACPU *cpu = HPPA_CPU(cs);
  32
  33     cpu->env.iaoq_f = value;
  34     cpu->env.iaoq_b = value + 4;
  35 }
  36
  37 static void hppa_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
  38 {
  39     HPPACPU *cpu = HPPA_CPU(cs);
  40
  41     cpu->env.iaoq_f = tb->pc;
  42     cpu->env.iaoq_b = tb->cs_base;
  43     cpu->env.psw_n = tb->flags & 1;
  44 }
  45
  46 static void hppa_cpu_disas_set_info(CPUState *cs, disassemble_info *info)
  47 {
  48     info->mach = bfd_mach_hppa20;
  49     info->print_insn = print_insn_hppa;
  50 }
  51
  52 static void hppa_cpu_realizefn(DeviceState *dev, Error **errp)
  53 {
  54     CPUState *cs = CPU(dev);
  55     HPPACPUClass *acc = HPPA_CPU_GET_CLASS(dev);
  56     Error *local_err = NULL;
  57
  58     cpu_exec_realizefn(cs, &local_err);
  59     if (local_err != NULL) {
  60         error_propagate(errp, local_err);
  61         return;
  62     }
  63
  64     qemu_init_vcpu(cs);
  65     acc->parent_realize(dev, errp);
  66 }
  67
  68 /* Sort hppabetically by type name. */
  69 static gint hppa_cpu_list_compare(gconstpointer a, gconstpointer b)
  70 {
  71     ObjectClass *class_a = (ObjectClass *)a;
  72     ObjectClass *class_b = (ObjectClass *)b;
  73     const char *name_a, *name_b;
  74
  75     name_a = object_class_get_name(class_a);
  76     name_b = object_class_get_name(class_b);
  77     return strcmp(name_a, name_b);
  78 }
  79
  80 static void hppa_cpu_list_entry(gpointer data, gpointer user_data)
  81 {
  82     ObjectClass *oc = data;
  83     CPUListState *s = user_data;
  84
  85     (*s->cpu_fprintf)(s->file, "  %s\n", object_class_get_name(oc));
  86 }
  87
  88 void hppa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  89 {
  90     CPUListState s = {
  91         .file = f,
  92         .cpu_fprintf = cpu_fprintf,
  93     };
  94     GSList *list;
  95
  96     list = object_class_get_list(TYPE_HPPA_CPU, false);
  97     list = g_slist_sort(list, hppa_cpu_list_compare);
  98     (*cpu_fprintf)(f, "Available CPUs:\n");
  99     g_slist_foreach(list, hppa_cpu_list_entry, &s);
 100     g_slist_free(list);
 101 }
 102
 103 static void hppa_cpu_initfn(Object *obj)
 104 {
 105     CPUState *cs = CPU(obj);
 106     HPPACPU *cpu = HPPA_CPU(obj);
 107     CPUHPPAState *env = &cpu->env;
 108
 109     cs->env_ptr = env;
 110     cpu_hppa_loaded_fr0(env);
 111     set_snan_bit_is_one(true, &env->fp_status);
 112
 113     hppa_translate_init();
 114 }
 115
 116 HPPACPU *cpu_hppa_init(const char *cpu_model)
 117 {
 118     HPPACPU *cpu;
 119
 120     cpu = HPPA_CPU(object_new(TYPE_HPPA_CPU));
 121
 122     object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 123
 124     return cpu;
 125 }
 126
 127 static void hppa_cpu_class_init(ObjectClass *oc, void *data)
 128 {
 129     DeviceClass *dc = DEVICE_CLASS(oc);
 130     CPUClass *cc = CPU_CLASS(oc);
 131     HPPACPUClass *acc = HPPA_CPU_CLASS(oc);
 132
 133     acc->parent_realize = dc->realize;
 134     dc->realize = hppa_cpu_realizefn;
 135
 136     cc->do_interrupt = hppa_cpu_do_interrupt;
 137     cc->cpu_exec_interrupt = hppa_cpu_exec_interrupt;
 138     cc->dump_state = hppa_cpu_dump_state;
 139     cc->set_pc = hppa_cpu_set_pc;
 140     cc->synchronize_from_tb = hppa_cpu_synchronize_from_tb;
 141     cc->gdb_read_register = hppa_cpu_gdb_read_register;
 142     cc->gdb_write_register = hppa_cpu_gdb_write_register;
 143     cc->handle_mmu_fault = hppa_cpu_handle_mmu_fault;
 144     cc->disas_set_info = hppa_cpu_disas_set_info;
 145
 146     cc->gdb_num_core_regs = 128;
 147 }
 148
 149 static const TypeInfo hppa_cpu_type_info = {
 150     .name = TYPE_HPPA_CPU,
 151     .parent = TYPE_CPU,
 152     .instance_size = sizeof(HPPACPU),
 153     .instance_init = hppa_cpu_initfn,
 154     .abstract = false,
 155     .class_size = sizeof(HPPACPUClass),
 156     .class_init = hppa_cpu_class_init,
 157 };
 158
 159 static void hppa_cpu_register_types(void)
 160 {
 161     type_register_static(&hppa_cpu_type_info);
 162 }
 163
 164 type_init(hppa_cpu_register_types)