| 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 "accel/tcg/cpu-loop.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 G_NORETURN |
| 34 | void do_range(CPUOpenRISCState *env, uintptr_t pc) |
| 35 | { |
| 36 | CPUState *cs = env_cpu(env); |
| 37 | |
| 38 | cs->exception_index = EXCP_RANGE; |
| 39 | cpu_loop_exit_restore(cs, pc); |
| 40 | } |
| 41 | |
| 42 | void HELPER(ove_cy)(CPUOpenRISCState *env) |
| 43 | { |
| 44 | if (env->sr_cy) { |
| 45 | do_range(env, GETPC()); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | void HELPER(ove_ov)(CPUOpenRISCState *env) |
| 50 | { |
| 51 | if (env->sr_ov < 0) { |
| 52 | do_range(env, GETPC()); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | void HELPER(ove_cyov)(CPUOpenRISCState *env) |
| 57 | { |
| 58 | if (env->sr_cy || env->sr_ov < 0) { |
| 59 | do_range(env, GETPC()); |
| 60 | } |
| 61 | } |