1 /* This file is part of the program psim. 2 3 Copyright (C) 1998, Andrew Cagney <cagney@highland.com.au> 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, see <http://www.gnu.org/licenses/>. 17 18 */ 19 20 #include "sim-main.h" 21 #include "m16_idecode.h" 22 #include "m32_idecode.h" 23 #include "bfd.h" 24 25 26 #define SD sd 27 #define CPU cpu 28 29 void 30 sim_engine_run (SIM_DESC sd, 31 int next_cpu_nr, 32 int nr_cpus, /* ignore */ 33 int siggnal) /* ignore */ 34 { 35 sim_cpu *cpu = STATE_CPU (sd, next_cpu_nr); 36 address_word cia = CPU_PC_GET (cpu); 37 38 while (1) 39 { 40 address_word nia; 41 42 #if defined (ENGINE_ISSUE_PREFIX_HOOK) 43 ENGINE_ISSUE_PREFIX_HOOK (); 44 #endif 45 46 if ((cia & 1)) 47 { 48 m16_instruction_word instruction_0 = IMEM16 (cia); 49 nia = m16_idecode_issue (sd, instruction_0, cia); 50 } 51 else 52 { 53 m32_instruction_word instruction_0 = IMEM32 (cia); 54 nia = m32_idecode_issue (sd, instruction_0, cia); 55 } 56 57 #if defined (ENGINE_ISSUE_POSTFIX_HOOK) 58 ENGINE_ISSUE_POSTFIX_HOOK (); 59 #endif 60 61 /* Update the instruction address */ 62 cia = nia; 63 64 /* process any events */ 65 if (sim_events_tick (sd)) 66 { 67 CPU_PC_SET (CPU, cia); 68 sim_events_process (sd); 69 cia = CPU_PC_GET (CPU); 70 } 71 72 } 73 } 74