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 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 } 62