vmsvga: don't process more than 1024 fifo commands at once
[qemu.git] / target-openrisc / mmu_helper.c
1 /*
2 * OpenRISC MMU helper routines
3 *
4 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
5 * Zhizhou Zhang <etouzh@gmail.com>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "qemu/osdep.h"
22 #include "cpu.h"
23 #include "exec/exec-all.h"
24 #include "exec/cpu_ldst.h"
25
26 #ifndef CONFIG_USER_ONLY
27
28 void tlb_fill(CPUState *cs, target_ulong addr, int is_write,
29 int mmu_idx, uintptr_t retaddr)
30 {
31 int ret;
32
33 ret = openrisc_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
34
35 if (ret) {
36 if (retaddr) {
37 /* now we have a real cpu fault. */
38 cpu_restore_state(cs, retaddr);
39 }
40 /* Raise Exception. */
41 cpu_loop_exit(cs);
42 }
43 }
44 #endif