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fb6916dd6c
add a new optional interface to CPUClass, which allows accelerators to extend the CPUClass with additional accelerator-specific initializations. This will allow to separate the target cpu code that is specific to each accelerator, and register it automatically with object hierarchy lookup depending on accelerator code availability, as part of the accel_init_interfaces() initialization step. Signed-off-by: Claudio Fontana <cfontana@suse.de> Message-Id: <20210204163931.7358-19-cfontana@suse.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
106 lines
3.2 KiB
C
106 lines
3.2 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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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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}
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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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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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