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 "qemu/osdep.h" |
22 | #include "cpu.h" |
23 | #include "exec/exec-all.h" |
24 | |
25 | |
26 | bool ppc_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
27 | MMUAccessType access_type, int mmu_idx, |
28 | bool probe, uintptr_t retaddr) |
29 | { |
30 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
31 | CPUPPCState *env = &cpu->env; |
32 | int exception, error_code; |
33 | |
34 | if (access_type == MMU_INST_FETCH) { |
35 | exception = POWERPC_EXCP_ISI; |
36 | error_code = 0x40000000; |
37 | } else { |
38 | exception = POWERPC_EXCP_DSI; |
39 | error_code = 0x40000000; |
40 | if (access_type == MMU_DATA_STORE) { |
41 | error_code |= 0x02000000; |
42 | } |
43 | env->spr[SPR_DAR] = address; |
44 | env->spr[SPR_DSISR] = error_code; |
45 | } |
46 | cs->exception_index = exception; |
47 | env->error_code = error_code; |
48 | cpu_loop_exit_restore(cs, retaddr); |
49 | } |
50 | |