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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "arm_interpreter.h"
const static cpu_config_t s_arm11_cpu_info = {
"armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE
};
ARM_Interpreter::ARM_Interpreter() {
m_state = new ARMul_State;
ARMul_EmulateInit();
ARMul_NewState(m_state);
m_state->abort_model = 0;
m_state->cpu = (cpu_config_t*)&s_arm11_cpu_info;
m_state->bigendSig = LOW;
ARMul_SelectProcessor(m_state, ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
m_state->lateabtSig = LOW;
mmu_init(m_state);
// Reset the core to initial state
ARMul_Reset(m_state);
m_state->NextInstr = 0;
m_state->Emulate = 3;
m_state->pc = m_state->Reg[15] = 0x00000000;
m_state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
}
ARM_Interpreter::~ARM_Interpreter() {
delete m_state;
}
/**
* Set the Program Counter to an address
* @param addr Address to set PC to
*/
void ARM_Interpreter::SetPC(u32 pc) {
m_state->pc = m_state->Reg[15] = pc;
}
/*
* Get the current Program Counter
* @return Returns current PC
*/
u32 ARM_Interpreter::GetPC() const {
return m_state->pc;
}
/**
* Get an ARM register
* @param index Register index (0-15)
* @return Returns the value in the register
*/
u32 ARM_Interpreter::GetReg(int index) const {
return m_state->Reg[index];
}
/**
* Set an ARM register
* @param index Register index (0-15)
* @param value Value to set register to
*/
void ARM_Interpreter::SetReg(int index, u32 value) {
m_state->Reg[index] = value;
}
/**
* Get the current CPSR register
* @return Returns the value of the CPSR register
*/
u32 ARM_Interpreter::GetCPSR() const {
return m_state->Cpsr;
}
/**
* Returns the number of clock ticks since the last reset
* @return Returns number of clock ticks
*/
u64 ARM_Interpreter::GetTicks() const {
return ARMul_Time(m_state);
}
/// Execture next instruction
void ARM_Interpreter::ExecuteInstruction() {
m_state->step++;
m_state->cycle++;
m_state->EndCondition = 0;
m_state->stop_simulator = 0;
m_state->NextInstr = RESUME;
m_state->last_pc = m_state->Reg[15];
m_state->Reg[15] = ARMul_DoInstr(m_state);
m_state->Cpsr = ((m_state->Cpsr & 0x0fffffdf) | (m_state->NFlag << 31) | (m_state->ZFlag << 30) |
(m_state->CFlag << 29) | (m_state->VFlag << 28) | (m_state->TFlag << 5));
m_state->NextInstr |= PRIMEPIPE; // Flush pipe
}
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