mirror of https://gitee.com/openkylin/qemu.git
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
|
|
* Host code generation common components
|
|
*
|
|
* Copyright (c) 2015 Peter Crosthwaite <crosthwaite.peter@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "qom/cpu.h"
|
|
#include "sysemu/cpus.h"
|
|
|
|
uintptr_t qemu_real_host_page_size;
|
|
intptr_t qemu_real_host_page_mask;
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
/* mask must never be zero, except for A20 change call */
|
|
static void tcg_handle_interrupt(CPUState *cpu, int mask)
|
|
{
|
|
int old_mask;
|
|
|
|
old_mask = cpu->interrupt_request;
|
|
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);
|
|
return;
|
|
}
|
|
|
|
if (use_icount) {
|
|
cpu->icount_decr.u16.high = 0xffff;
|
|
if (!cpu->can_do_io
|
|
&& (mask & ~old_mask) != 0) {
|
|
cpu_abort(cpu, "Raised interrupt while not in I/O function");
|
|
}
|
|
} else {
|
|
cpu->tcg_exit_req = 1;
|
|
}
|
|
}
|
|
|
|
CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
|
|
#endif
|