mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 12:07:31 +00:00
9e5d3b692e
Add module annotations for tcg so autoloading works. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-29-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
134 lines
4.0 KiB
C
134 lines
4.0 KiB
C
/*
|
|
* QEMU TCG vCPU common functionality
|
|
*
|
|
* Functionality common to all TCG vCPU variants: mttcg, rr and icount.
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
* Copyright (c) 2014 Red Hat Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "sysemu/tcg.h"
|
|
#include "sysemu/replay.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/guest-random.h"
|
|
#include "exec/exec-all.h"
|
|
|
|
#include "tcg-accel-ops.h"
|
|
#include "tcg-accel-ops-mttcg.h"
|
|
#include "tcg-accel-ops-rr.h"
|
|
#include "tcg-accel-ops-icount.h"
|
|
|
|
/* common functionality among all TCG variants */
|
|
|
|
void tcg_cpu_init_cflags(CPUState *cpu, bool parallel)
|
|
{
|
|
uint32_t cflags = cpu->cluster_index << CF_CLUSTER_SHIFT;
|
|
cflags |= parallel ? CF_PARALLEL : 0;
|
|
cflags |= icount_enabled() ? CF_USE_ICOUNT : 0;
|
|
cpu->tcg_cflags = cflags;
|
|
}
|
|
|
|
void tcg_cpus_destroy(CPUState *cpu)
|
|
{
|
|
cpu_thread_signal_destroyed(cpu);
|
|
}
|
|
|
|
int tcg_cpus_exec(CPUState *cpu)
|
|
{
|
|
int ret;
|
|
#ifdef CONFIG_PROFILER
|
|
int64_t ti;
|
|
#endif
|
|
assert(tcg_enabled());
|
|
#ifdef CONFIG_PROFILER
|
|
ti = profile_getclock();
|
|
#endif
|
|
cpu_exec_start(cpu);
|
|
ret = cpu_exec(cpu);
|
|
cpu_exec_end(cpu);
|
|
#ifdef CONFIG_PROFILER
|
|
qatomic_set(&tcg_ctx->prof.cpu_exec_time,
|
|
tcg_ctx->prof.cpu_exec_time + profile_getclock() - ti);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/* mask must never be zero, except for A20 change call */
|
|
void tcg_handle_interrupt(CPUState *cpu, int mask)
|
|
{
|
|
g_assert(qemu_mutex_iothread_locked());
|
|
|
|
cpu->interrupt_request |= mask;
|
|
|
|
/*
|
|
* If called from iothread context, wake the target cpu in
|
|
* case its halted.
|
|
*/
|
|
if (!qemu_cpu_is_self(cpu)) {
|
|
qemu_cpu_kick(cpu);
|
|
} else {
|
|
qatomic_set(&cpu_neg(cpu)->icount_decr.u16.high, -1);
|
|
}
|
|
}
|
|
|
|
static void tcg_accel_ops_init(AccelOpsClass *ops)
|
|
{
|
|
if (qemu_tcg_mttcg_enabled()) {
|
|
ops->create_vcpu_thread = mttcg_start_vcpu_thread;
|
|
ops->kick_vcpu_thread = mttcg_kick_vcpu_thread;
|
|
ops->handle_interrupt = tcg_handle_interrupt;
|
|
} else if (icount_enabled()) {
|
|
ops->create_vcpu_thread = rr_start_vcpu_thread;
|
|
ops->kick_vcpu_thread = rr_kick_vcpu_thread;
|
|
ops->handle_interrupt = icount_handle_interrupt;
|
|
ops->get_virtual_clock = icount_get;
|
|
ops->get_elapsed_ticks = icount_get;
|
|
} else {
|
|
ops->create_vcpu_thread = rr_start_vcpu_thread;
|
|
ops->kick_vcpu_thread = rr_kick_vcpu_thread;
|
|
ops->handle_interrupt = tcg_handle_interrupt;
|
|
}
|
|
}
|
|
|
|
static void tcg_accel_ops_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
|
|
|
|
ops->ops_init = tcg_accel_ops_init;
|
|
}
|
|
|
|
static const TypeInfo tcg_accel_ops_type = {
|
|
.name = ACCEL_OPS_NAME("tcg"),
|
|
|
|
.parent = TYPE_ACCEL_OPS,
|
|
.class_init = tcg_accel_ops_class_init,
|
|
.abstract = true,
|
|
};
|
|
module_obj(ACCEL_OPS_NAME("tcg"));
|
|
|
|
static void tcg_accel_ops_register_types(void)
|
|
{
|
|
type_register_static(&tcg_accel_ops_type);
|
|
}
|
|
type_init(tcg_accel_ops_register_types);
|