1 | /* |
---|---|
2 | * PowerPC CPU routines for qemu. |
3 | * |
4 | * Copyright (c) 2017 Nikunj A Dadhania, IBM Corporation. |
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 | |
20 | #include "qemu/osdep.h" |
21 | #include "cpu.h" |
22 | #include "cpu-models.h" |
23 | |
24 | target_ulong cpu_read_xer(CPUPPCState *env) |
25 | { |
26 | if (is_isa300(env)) { |
27 | return env->xer | (env->so << XER_SO) | |
28 | (env->ov << XER_OV) | (env->ca << XER_CA) | |
29 | (env->ov32 << XER_OV32) | (env->ca32 << XER_CA32); |
30 | } |
31 | |
32 | return env->xer | (env->so << XER_SO) | (env->ov << XER_OV) | |
33 | (env->ca << XER_CA); |
34 | } |
35 | |
36 | void cpu_write_xer(CPUPPCState *env, target_ulong xer) |
37 | { |
38 | env->so = (xer >> XER_SO) & 1; |
39 | env->ov = (xer >> XER_OV) & 1; |
40 | env->ca = (xer >> XER_CA) & 1; |
41 | /* write all the flags, while reading back check of isa300 */ |
42 | env->ov32 = (xer >> XER_OV32) & 1; |
43 | env->ca32 = (xer >> XER_CA32) & 1; |
44 | env->xer = xer & ~((1ul << XER_SO) | |
45 | (1ul << XER_OV) | (1ul << XER_CA) | |
46 | (1ul << XER_OV32) | (1ul << XER_CA32)); |
47 | } |
48 |