cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

accel-common.c (4175B)

      1/*
      2 * QEMU accel class, components common to system emulation and user mode
      3 *
      4 * Copyright (c) 2003-2008 Fabrice Bellard
      5 * Copyright (c) 2014 Red Hat Inc.
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining a copy
      8 * of this software and associated documentation files (the "Software"), to deal
      9 * in the Software without restriction, including without limitation the rights
     10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11 * copies of the Software, and to permit persons to whom the Software is
     12 * furnished to do so, subject to the following conditions:
     13 *
     14 * The above copyright notice and this permission notice shall be included in
     15 * all copies or substantial portions of the Software.
     16 *
     17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     23 * THE SOFTWARE.
     24 */
     25
     26#include "qemu/osdep.h"
     27#include "qemu/accel.h"
     28
     29#include "cpu.h"
     30#include "hw/core/accel-cpu.h"
     31
     32#ifndef CONFIG_USER_ONLY
     33#include "accel-softmmu.h"
     34#endif /* !CONFIG_USER_ONLY */
     35
     36static const TypeInfo accel_type = {
     37    .name = TYPE_ACCEL,
     38    .parent = TYPE_OBJECT,
     39    .class_size = sizeof(AccelClass),
     40    .instance_size = sizeof(AccelState),
     41};
     42
     43/* Lookup AccelClass from opt_name. Returns NULL if not found */
     44AccelClass *accel_find(const char *opt_name)
     45{
     46    char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
     47    AccelClass *ac = ACCEL_CLASS(module_object_class_by_name(class_name));
     48    g_free(class_name);
     49    return ac;
     50}
     51
     52static void accel_init_cpu_int_aux(ObjectClass *klass, void *opaque)
     53{
     54    CPUClass *cc = CPU_CLASS(klass);
     55    AccelCPUClass *accel_cpu = opaque;
     56
     57    /*
     58     * The first callback allows accel-cpu to run initializations
     59     * for the CPU, customizing CPU behavior according to the accelerator.
     60     *
     61     * The second one allows the CPU to customize the accel-cpu
     62     * behavior according to the CPU.
     63     *
     64     * The second is currently only used by TCG, to specialize the
     65     * TCGCPUOps depending on the CPU type.
     66     */
     67    cc->accel_cpu = accel_cpu;
     68    if (accel_cpu->cpu_class_init) {
     69        accel_cpu->cpu_class_init(cc);
     70    }
     71    if (cc->init_accel_cpu) {
     72        cc->init_accel_cpu(accel_cpu, cc);
     73    }
     74}
     75
     76/* initialize the arch-specific accel CpuClass interfaces */
     77static void accel_init_cpu_interfaces(AccelClass *ac)
     78{
     79    const char *ac_name; /* AccelClass name */
     80    char *acc_name;      /* AccelCPUClass name */
     81    ObjectClass *acc;    /* AccelCPUClass */
     82
     83    ac_name = object_class_get_name(OBJECT_CLASS(ac));
     84    g_assert(ac_name != NULL);
     85
     86    acc_name = g_strdup_printf("%s-%s", ac_name, CPU_RESOLVING_TYPE);
     87    acc = object_class_by_name(acc_name);
     88    g_free(acc_name);
     89
     90    if (acc) {
     91        object_class_foreach(accel_init_cpu_int_aux,
     92                             CPU_RESOLVING_TYPE, false, acc);
     93    }
     94}
     95
     96void accel_init_interfaces(AccelClass *ac)
     97{
     98#ifndef CONFIG_USER_ONLY
     99    accel_init_ops_interfaces(ac);
    100#endif /* !CONFIG_USER_ONLY */
    101
    102    accel_init_cpu_interfaces(ac);
    103}
    104
    105void accel_cpu_instance_init(CPUState *cpu)
    106{
    107    CPUClass *cc = CPU_GET_CLASS(cpu);
    108
    109    if (cc->accel_cpu && cc->accel_cpu->cpu_instance_init) {
    110        cc->accel_cpu->cpu_instance_init(cpu);
    111    }
    112}
    113
    114bool accel_cpu_realizefn(CPUState *cpu, Error **errp)
    115{
    116    CPUClass *cc = CPU_GET_CLASS(cpu);
    117
    118    if (cc->accel_cpu && cc->accel_cpu->cpu_realizefn) {
    119        return cc->accel_cpu->cpu_realizefn(cpu, errp);
    120    }
    121    return true;
    122}
    123
    124static const TypeInfo accel_cpu_type = {
    125    .name = TYPE_ACCEL_CPU,
    126    .parent = TYPE_OBJECT,
    127    .abstract = true,
    128    .class_size = sizeof(AccelCPUClass),
    129};
    130
    131static void register_accel_types(void)
    132{
    133    type_register_static(&accel_type);
    134    type_register_static(&accel_cpu_type);
    135}
    136
    137type_init(register_accel_types);