LXR qemu/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 "exec/exec-all.h"
  26
  27
  28static void hppa_cpu_set_pc(CPUState *cs, vaddr value)
  29{
  30    HPPACPU *cpu = HPPA_CPU(cs);
  31
  32    cpu->env.iaoq_f = value;
  33    cpu->env.iaoq_b = value + 4;
  34}
  35
  36static void hppa_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
  37{
  38    HPPACPU *cpu = HPPA_CPU(cs);
  39
  40    cpu->env.iaoq_f = tb->pc;
  41    cpu->env.iaoq_b = tb->cs_base;
  42    cpu->env.psw_n = tb->flags & 1;
  43}
  44
  45static void hppa_cpu_disas_set_info(CPUState *cs, disassemble_info *info)
  46{
  47    info->mach = bfd_mach_hppa20;
  48    info->print_insn = print_insn_hppa;
  49}
  50
  51static void hppa_cpu_realizefn(DeviceState *dev, Error **errp)
  52{
  53    CPUState *cs = CPU(dev);
  54    HPPACPUClass *acc = HPPA_CPU_GET_CLASS(dev);
  55    Error *local_err = NULL;
  56
  57    cpu_exec_realizefn(cs, &local_err);
  58    if (local_err != NULL) {
  59        error_propagate(errp, local_err);
  60        return;
  61    }
  62
  63    qemu_init_vcpu(cs);
  64    acc->parent_realize(dev, errp);
  65}
  66
  67/* Sort hppabetically by type name. */
  68static gint hppa_cpu_list_compare(gconstpointer a, gconstpointer b)
  69{
  70    ObjectClass *class_a = (ObjectClass *)a;
  71    ObjectClass *class_b = (ObjectClass *)b;
  72    const char *name_a, *name_b;
  73
  74    name_a = object_class_get_name(class_a);
  75    name_b = object_class_get_name(class_b);
  76    return strcmp(name_a, name_b);
  77}
  78
  79static void hppa_cpu_list_entry(gpointer data, gpointer user_data)
  80{
  81    ObjectClass *oc = data;
  82    CPUListState *s = user_data;
  83
  84    (*s->cpu_fprintf)(s->file, "  %s\n", object_class_get_name(oc));
  85}
  86
  87void hppa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  88{
  89    CPUListState s = {
  90        .file = f,
  91        .cpu_fprintf = cpu_fprintf,
  92    };
  93    GSList *list;
  94
  95    list = object_class_get_list(TYPE_HPPA_CPU, false);
  96    list = g_slist_sort(list, hppa_cpu_list_compare);
  97    (*cpu_fprintf)(f, "Available CPUs:\n");
  98    g_slist_foreach(list, hppa_cpu_list_entry, &s);
  99    g_slist_free(list);
 100}
 101
 102static void hppa_cpu_initfn(Object *obj)
 103{
 104    CPUState *cs = CPU(obj);
 105    HPPACPU *cpu = HPPA_CPU(obj);
 106    CPUHPPAState *env = &cpu->env;
 107
 108    cs->env_ptr = env;
 109    cpu_hppa_loaded_fr0(env);
 110    set_snan_bit_is_one(true, &env->fp_status);
 111
 112    hppa_translate_init();
 113}
 114
 115HPPACPU *cpu_hppa_init(const char *cpu_model)
 116{
 117    HPPACPU *cpu;
 118
 119    cpu = HPPA_CPU(object_new(TYPE_HPPA_CPU));
 120
 121    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 122
 123    return cpu;
 124}
 125
 126static void hppa_cpu_class_init(ObjectClass *oc, void *data)
 127{
 128    DeviceClass *dc = DEVICE_CLASS(oc);
 129    CPUClass *cc = CPU_CLASS(oc);
 130    HPPACPUClass *acc = HPPA_CPU_CLASS(oc);
 131
 132    acc->parent_realize = dc->realize;
 133    dc->realize = hppa_cpu_realizefn;
 134
 135    cc->do_interrupt = hppa_cpu_do_interrupt;
 136    cc->cpu_exec_interrupt = hppa_cpu_exec_interrupt;
 137    cc->dump_state = hppa_cpu_dump_state;
 138    cc->set_pc = hppa_cpu_set_pc;
 139    cc->synchronize_from_tb = hppa_cpu_synchronize_from_tb;
 140    cc->gdb_read_register = hppa_cpu_gdb_read_register;
 141    cc->gdb_write_register = hppa_cpu_gdb_write_register;
 142    cc->handle_mmu_fault = hppa_cpu_handle_mmu_fault;
 143    cc->disas_set_info = hppa_cpu_disas_set_info;
 144
 145    cc->gdb_num_core_regs = 128;
 146}
 147
 148static const TypeInfo hppa_cpu_type_info = {
 149    .name = TYPE_HPPA_CPU,
 150    .parent = TYPE_CPU,
 151    .instance_size = sizeof(HPPACPU),
 152    .instance_init = hppa_cpu_initfn,
 153    .abstract = false,
 154    .class_size = sizeof(HPPACPUClass),
 155    .class_init = hppa_cpu_class_init,
 156};
 157
 158static void hppa_cpu_register_types(void)
 159{
 160    type_register_static(&hppa_cpu_type_info);
 161}
 162
 163type_init(hppa_cpu_register_types)
 164