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