trap signals for "-serial mon:stdio"
[qemu.git] / target-ppc / user_only_helper.c
1 /*
2 * PowerPC MMU stub handling for user mode emulation
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
5 * Copyright (c) 2013 David Gibson, IBM Corporation.
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 "cpu.h"
22
23 int cpu_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
24 int mmu_idx)
25 {
26 int exception, error_code;
27
28 if (rw == 2) {
29 exception = POWERPC_EXCP_ISI;
30 error_code = 0x40000000;
31 } else {
32 exception = POWERPC_EXCP_DSI;
33 error_code = 0x40000000;
34 if (rw) {
35 error_code |= 0x02000000;
36 }
37 env->spr[SPR_DAR] = address;
38 env->spr[SPR_DSISR] = error_code;
39 }
40 env->exception_index = exception;
41 env->error_code = error_code;
42
43 return 1;
44 }