1 | /* |
2 | * OpenRISC exception helper routines |
3 | * |
4 | * Copyright (c) 2011-2012 Jia Liu <proljc@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 2.1 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 "exec/exec-all.h" |
23 | #include "exec/helper-proto.h" |
24 | #include "exception.h" |
25 | |
26 | void HELPER(exception)(CPUOpenRISCState *env, uint32_t excp) |
27 | { |
28 | OpenRISCCPU *cpu = env_archcpu(env); |
29 | |
30 | raise_exception(cpu, excp); |
31 | } |
32 | |
33 | static void QEMU_NORETURN do_range(CPUOpenRISCState *env, uintptr_t pc) |
34 | { |
35 | CPUState *cs = env_cpu(env); |
36 | |
37 | cs->exception_index = EXCP_RANGE; |
38 | cpu_loop_exit_restore(cs, pc); |
39 | } |
40 | |
41 | void HELPER(ove_cy)(CPUOpenRISCState *env) |
42 | { |
43 | if (env->sr_cy) { |
44 | do_range(env, GETPC()); |
45 | } |
46 | } |
47 | |
48 | void HELPER(ove_ov)(CPUOpenRISCState *env) |
49 | { |
50 | if (env->sr_ov < 0) { |
51 | do_range(env, GETPC()); |
52 | } |
53 | } |
54 | |
55 | void HELPER(ove_cyov)(CPUOpenRISCState *env) |
56 | { |
57 | if (env->sr_cy || env->sr_ov < 0) { |
58 | do_range(env, GETPC()); |
59 | } |
60 | } |
61 | |