blob: 5e989cdf70433bbde10226e13c2abea2f6b32b2f [file] [log] [blame]
Peter Crosthwaite9b68a772015-09-10 22:39:33 -07001/*
2 * Host code generation common components
3 *
4 * Copyright (c) 2015 Peter Crosthwaite <crosthwaite.peter@gmail.com>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
Peter Maydell7b31bbc2016-01-26 18:16:56 +000020#include "qemu/osdep.h"
Peter Crosthwaite9b68a772015-09-10 22:39:33 -070021#include "qemu-common.h"
22#include "qom/cpu.h"
Paolo Bonzini4b4629d2016-03-15 16:47:38 +010023#include "sysemu/cpus.h"
Peter Crosthwaite9b68a772015-09-10 22:39:33 -070024
Peter Crosthwaite5f12a782015-09-10 22:39:36 -070025uintptr_t qemu_real_host_page_size;
Paolo Bonzini0c2d70c2015-12-02 13:00:54 +010026intptr_t qemu_real_host_page_mask;
Peter Crosthwaite5f12a782015-09-10 22:39:36 -070027
Peter Crosthwaite9b68a772015-09-10 22:39:33 -070028#ifndef CONFIG_USER_ONLY
29/* mask must never be zero, except for A20 change call */
30static void tcg_handle_interrupt(CPUState *cpu, int mask)
31{
32 int old_mask;
33
34 old_mask = cpu->interrupt_request;
35 cpu->interrupt_request |= mask;
36
37 /*
38 * If called from iothread context, wake the target cpu in
39 * case its halted.
40 */
41 if (!qemu_cpu_is_self(cpu)) {
42 qemu_cpu_kick(cpu);
43 return;
44 }
45
46 if (use_icount) {
47 cpu->icount_decr.u16.high = 0xffff;
48 if (!cpu->can_do_io
49 && (mask & ~old_mask) != 0) {
50 cpu_abort(cpu, "Raised interrupt while not in I/O function");
51 }
52 } else {
53 cpu->tcg_exit_req = 1;
54 }
55}
56
57CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
58#endif