86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/**
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* Copyright (C) 2013 Citrus Emulator
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*
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* @file arm_interpreter.h
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* @author bunnei
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* @date 2014-04-04
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* @brief ARM interface instance for SkyEye interprerer
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*
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* @section LICENSE
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details at
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* http://www.gnu.org/copyleft/gpl.html
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*
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* Official project repository can be found at:
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* http://code.google.com/p/gekko-gc-emu/
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*/
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#include "arm_interpreter.h"
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const static cpu_config_t s_arm11_cpu_info = {
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"armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE
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};
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ARM_Interpreter::ARM_Interpreter() {
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state = new ARMul_State;
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ARMul_EmulateInit();
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ARMul_NewState(state);
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state->abort_model = 0;
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state->cpu = (cpu_config_t*)&s_arm11_cpu_info;
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state->bigendSig = LOW;
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ARMul_SelectProcessor(state, ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
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state->lateabtSig = LOW;
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mmu_init(state);
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// Reset the core to initial state
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ARMul_Reset(state);
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state->NextInstr = 0;
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state->Emulate = 3;
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state->pc = state->Reg[15] = 0x00000000;
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state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
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}
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void ARM_Interpreter::SetPC(u32 pc) {
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state->pc = state->Reg[15] = pc;
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}
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u32 ARM_Interpreter::PC() {
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return state->pc;
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}
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u32 ARM_Interpreter::Reg(int index){
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return state->Reg[index];
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}
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u32 ARM_Interpreter::CPSR() {
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return state->Cpsr;
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}
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ARM_Interpreter::~ARM_Interpreter() {
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delete state;
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}
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void ARM_Interpreter::ExecuteInstruction() {
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state->step++;
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state->cycle++;
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state->EndCondition = 0;
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state->stop_simulator = 0;
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state->NextInstr = RESUME;
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state->last_pc = state->Reg[15];
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state->Reg[15] = ARMul_DoInstr(state);
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state->Cpsr = ((state->Cpsr & 0x0fffffdf) | (state->NFlag << 31) | (state->ZFlag << 30) |
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(state->CFlag << 29) | (state->VFlag << 28) | (state->TFlag << 5));
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FLUSHPIPE;
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}
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