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
  28 static 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
  36 static 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
  45 static 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
  51 static 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. */
  68 static 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
  79 static 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
  87 void 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
 102 static 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
 115 static ObjectClass *hppa_cpu_class_by_name(const char *cpu_model)
 116 {
 117     return object_class_by_name(TYPE_HPPA_CPU);
 118 }
 119
 120 static void hppa_cpu_class_init(ObjectClass *oc, void *data)
 121 {
 122     DeviceClass *dc = DEVICE_CLASS(oc);
 123     CPUClass *cc = CPU_CLASS(oc);
 124     HPPACPUClass *acc = HPPA_CPU_CLASS(oc);
 125
 126     acc->parent_realize = dc->realize;
 127     dc->realize = hppa_cpu_realizefn;
 128
 129     cc->class_by_name = hppa_cpu_class_by_name;
 130     cc->do_interrupt = hppa_cpu_do_interrupt;
 131     cc->cpu_exec_interrupt = hppa_cpu_exec_interrupt;
 132     cc->dump_state = hppa_cpu_dump_state;
 133     cc->set_pc = hppa_cpu_set_pc;
 134     cc->synchronize_from_tb = hppa_cpu_synchronize_from_tb;
 135     cc->gdb_read_register = hppa_cpu_gdb_read_register;
 136     cc->gdb_write_register = hppa_cpu_gdb_write_register;
 137     cc->handle_mmu_fault = hppa_cpu_handle_mmu_fault;
 138     cc->disas_set_info = hppa_cpu_disas_set_info;
 139
 140     cc->gdb_num_core_regs = 128;
 141 }
 142
 143 static const TypeInfo hppa_cpu_type_info = {
 144     .name = TYPE_HPPA_CPU,
 145     .parent = TYPE_CPU,
 146     .instance_size = sizeof(HPPACPU),
 147     .instance_init = hppa_cpu_initfn,
 148     .abstract = false,
 149     .class_size = sizeof(HPPACPUClass),
 150     .class_init = hppa_cpu_class_init,
 151 };
 152
 153 static void hppa_cpu_register_types(void)
 154 {
 155     type_register_static(&hppa_cpu_type_info);
 156 }
 157
 158 type_init(hppa_cpu_register_types)