cc3f2be6b7
while on x86 all CPU classes can use the same set of TCGCPUOps, on ARM the right accel behavior depends on the type of the CPU. So we need a way to specialize the accel behavior according to the CPU. Therefore, add a second initialization, after the accel_cpu->cpu_class_init, that allows to do this. Signed-off-by: Claudio Fontana <cfontana@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210322132800.7470-24-cfontana@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
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* QEMU accel class, components common to system emulation and user mode
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/accel.h"
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#include "cpu.h"
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#include "hw/core/accel-cpu.h"
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#ifndef CONFIG_USER_ONLY
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#include "accel-softmmu.h"
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#endif /* !CONFIG_USER_ONLY */
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static const TypeInfo accel_type = {
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.name = TYPE_ACCEL,
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.parent = TYPE_OBJECT,
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.class_size = sizeof(AccelClass),
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.instance_size = sizeof(AccelState),
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};
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/* Lookup AccelClass from opt_name. Returns NULL if not found */
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AccelClass *accel_find(const char *opt_name)
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{
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char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
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AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
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g_free(class_name);
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return ac;
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}
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static void accel_init_cpu_int_aux(ObjectClass *klass, void *opaque)
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{
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CPUClass *cc = CPU_CLASS(klass);
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AccelCPUClass *accel_cpu = opaque;
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/*
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* The first callback allows accel-cpu to run initializations
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* for the CPU, customizing CPU behavior according to the accelerator.
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*
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* The second one allows the CPU to customize the accel-cpu
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* behavior according to the CPU.
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*
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* The second is currently only used by TCG, to specialize the
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* TCGCPUOps depending on the CPU type.
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*/
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cc->accel_cpu = accel_cpu;
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if (accel_cpu->cpu_class_init) {
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accel_cpu->cpu_class_init(cc);
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}
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if (cc->init_accel_cpu) {
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cc->init_accel_cpu(accel_cpu, cc);
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}
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}
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/* initialize the arch-specific accel CpuClass interfaces */
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static void accel_init_cpu_interfaces(AccelClass *ac)
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{
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const char *ac_name; /* AccelClass name */
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char *acc_name; /* AccelCPUClass name */
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ObjectClass *acc; /* AccelCPUClass */
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ac_name = object_class_get_name(OBJECT_CLASS(ac));
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g_assert(ac_name != NULL);
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acc_name = g_strdup_printf("%s-%s", ac_name, CPU_RESOLVING_TYPE);
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acc = object_class_by_name(acc_name);
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g_free(acc_name);
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if (acc) {
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object_class_foreach(accel_init_cpu_int_aux,
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CPU_RESOLVING_TYPE, false, acc);
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}
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}
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void accel_init_interfaces(AccelClass *ac)
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{
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#ifndef CONFIG_USER_ONLY
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accel_init_ops_interfaces(ac);
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#endif /* !CONFIG_USER_ONLY */
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accel_init_cpu_interfaces(ac);
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}
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void accel_cpu_instance_init(CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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if (cc->accel_cpu && cc->accel_cpu->cpu_instance_init) {
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cc->accel_cpu->cpu_instance_init(cpu);
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}
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}
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bool accel_cpu_realizefn(CPUState *cpu, Error **errp)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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if (cc->accel_cpu && cc->accel_cpu->cpu_realizefn) {
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return cc->accel_cpu->cpu_realizefn(cpu, errp);
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}
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return true;
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}
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static const TypeInfo accel_cpu_type = {
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.name = TYPE_ACCEL_CPU,
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.parent = TYPE_OBJECT,
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.abstract = true,
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.class_size = sizeof(AccelCPUClass),
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};
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static void register_accel_types(void)
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{
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type_register_static(&accel_type);
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type_register_static(&accel_cpu_type);
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}
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type_init(register_accel_types);
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