LXR qemu/target-arm/cpu64.c

   1/*
   2 * QEMU AArch64 CPU
   3 *
   4 * Copyright (c) 2013 Linaro Ltd
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version 2
   9 * of the License, or (at your option) any later version.
  10 *
  11 * This program 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
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, see
  18 * <http://www.gnu.org/licenses/gpl-2.0.html>
  19 */
  20
  21#include "cpu.h"
  22#include "qemu-common.h"
  23#if !defined(CONFIG_USER_ONLY)
  24#include "hw/loader.h"
  25#endif
  26#include "hw/arm/arm.h"
  27#include "sysemu/sysemu.h"
  28#include "sysemu/kvm.h"
  29
  30static inline void set_feature(CPUARMState *env, int feature)
  31{
  32    env->features |= 1ULL << feature;
  33}
  34
  35#ifdef CONFIG_USER_ONLY
  36static void aarch64_any_initfn(Object *obj)
  37{
  38    ARMCPU *cpu = ARM_CPU(obj);
  39
  40    set_feature(&cpu->env, ARM_FEATURE_V8);
  41    set_feature(&cpu->env, ARM_FEATURE_VFP4);
  42    set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
  43    set_feature(&cpu->env, ARM_FEATURE_NEON);
  44    set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
  45    set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
  46    set_feature(&cpu->env, ARM_FEATURE_V7MP);
  47    set_feature(&cpu->env, ARM_FEATURE_AARCH64);
  48    cpu->ctr = 0x80030003; /* 32 byte I and D cacheline size, VIPT icache */
  49}
  50#endif
  51
  52typedef struct ARMCPUInfo {
  53    const char *name;
  54    void (*initfn)(Object *obj);
  55    void (*class_init)(ObjectClass *oc, void *data);
  56} ARMCPUInfo;
  57
  58static const ARMCPUInfo aarch64_cpus[] = {
  59#ifdef CONFIG_USER_ONLY
  60    { .name = "any",         .initfn = aarch64_any_initfn },
  61#endif
  62    { .name = NULL }
  63};
  64
  65static void aarch64_cpu_initfn(Object *obj)
  66{
  67}
  68
  69static void aarch64_cpu_finalizefn(Object *obj)
  70{
  71}
  72
  73static void aarch64_cpu_set_pc(CPUState *cs, vaddr value)
  74{
  75    ARMCPU *cpu = ARM_CPU(cs);
  76    /*
  77     * TODO: this will need updating for system emulation,
  78     * when the core may be in AArch32 mode.
  79     */
  80    cpu->env.pc = value;
  81}
  82
  83static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
  84{
  85    CPUClass *cc = CPU_CLASS(oc);
  86
  87    cc->dump_state = aarch64_cpu_dump_state;
  88    cc->set_pc = aarch64_cpu_set_pc;
  89    cc->gdb_read_register = aarch64_cpu_gdb_read_register;
  90    cc->gdb_write_register = aarch64_cpu_gdb_write_register;
  91    cc->gdb_num_core_regs = 34;
  92    cc->gdb_core_xml_file = "aarch64-core.xml";
  93}
  94
  95static void aarch64_cpu_register(const ARMCPUInfo *info)
  96{
  97    TypeInfo type_info = {
  98        .parent = TYPE_AARCH64_CPU,
  99        .instance_size = sizeof(ARMCPU),
 100        .instance_init = info->initfn,
 101        .class_size = sizeof(ARMCPUClass),
 102        .class_init = info->class_init,
 103    };
 104
 105    type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
 106    type_register(&type_info);
 107    g_free((void *)type_info.name);
 108}
 109
 110static const TypeInfo aarch64_cpu_type_info = {
 111    .name = TYPE_AARCH64_CPU,
 112    .parent = TYPE_ARM_CPU,
 113    .instance_size = sizeof(ARMCPU),
 114    .instance_init = aarch64_cpu_initfn,
 115    .instance_finalize = aarch64_cpu_finalizefn,
 116    .abstract = true,
 117    .class_size = sizeof(AArch64CPUClass),
 118    .class_init = aarch64_cpu_class_init,
 119};
 120
 121static void aarch64_cpu_register_types(void)
 122{
 123    const ARMCPUInfo *info = aarch64_cpus;
 124
 125    type_register_static(&aarch64_cpu_type_info);
 126
 127    while (info->name) {
 128        aarch64_cpu_register(info);
 129        info++;
 130    }
 131}
 132
 133type_init(aarch64_cpu_register_types)
 134