unicorn/qemu/accel.c
2017-01-21 12:28:22 +11:00

131 lines
3.8 KiB
C

/*
* QEMU System Emulator, accelerator interfaces
*
* 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.
*/
/* Modified for Unicorn Engine by Nguyen Anh Quynh, 2015 */
#include "sysemu/accel.h"
#include "hw/boards.h"
#include "qemu-common.h"
#include "sysemu/sysemu.h"
#include "qom/object.h"
#include "hw/boards.h"
// use default size for TCG translated block
#define TCG_TB_SIZE 0
static bool tcg_allowed = true;
static int tcg_init(MachineState *ms);
static AccelClass *accel_find(struct uc_struct *uc, const char *opt_name);
static int accel_init_machine(AccelClass *acc, MachineState *ms);
static void tcg_accel_class_init(struct uc_struct *uc, ObjectClass *oc, void *data);
static int tcg_init(MachineState *ms)
{
ms->uc->tcg_exec_init(ms->uc, TCG_TB_SIZE * 1024 * 1024); // arch-dependent
return 0;
}
static const TypeInfo accel_type = {
TYPE_ACCEL,
TYPE_OBJECT,
sizeof(AccelClass),
sizeof(AccelState),
};
#define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
static const TypeInfo tcg_accel_type = {
TYPE_TCG_ACCEL,
TYPE_ACCEL,
0,
0,
NULL,
NULL,
NULL,
NULL,
NULL,
tcg_accel_class_init,
};
int configure_accelerator(MachineState *ms)
{
int ret;
bool accel_initialised = false;
AccelClass *acc;
acc = accel_find(ms->uc, "tcg");
ret = accel_init_machine(acc, ms);
if (ret < 0) {
fprintf(stderr, "failed to initialize %s: %s\n",
acc->name,
strerror(-ret));
} else {
accel_initialised = true;
}
return !accel_initialised;
}
void register_accel_types(struct uc_struct *uc)
{
type_register_static(uc, &accel_type);
type_register_static(uc, &tcg_accel_type);
}
static void tcg_accel_class_init(struct uc_struct *uc, ObjectClass *oc, void *data)
{
AccelClass *ac = ACCEL_CLASS(uc, oc);
ac->name = "tcg";
ac->init_machine = tcg_init;
ac->allowed = &tcg_allowed;
}
/* Lookup AccelClass from opt_name. Returns NULL if not found */
static AccelClass *accel_find(struct uc_struct *uc, const char *opt_name)
{
char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
AccelClass *ac = ACCEL_CLASS(uc, object_class_by_name(uc, class_name));
g_free(class_name);
return ac;
}
static int accel_init_machine(AccelClass *acc, MachineState *ms)
{
ObjectClass *oc = OBJECT_CLASS(acc);
const char *cname = object_class_get_name(oc);
AccelState *accel = ACCEL(ms->uc, object_new(ms->uc, cname));
int ret;
ms->accelerator = accel;
*(acc->allowed) = true;
ret = acc->init_machine(ms);
if (ret < 0) {
ms->accelerator = NULL;
*(acc->allowed) = false;
object_unref(ms->uc, OBJECT(accel));
}
return ret;
}