mirror of https://github.com/bsnes-emu/bsnes.git
81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
#include <processor/processor.hpp>
|
|
#include "arm.hpp"
|
|
|
|
namespace Processor {
|
|
|
|
#include "registers.cpp"
|
|
#include "algorithms.cpp"
|
|
#include "instructions-arm.cpp"
|
|
#include "instructions-thumb.cpp"
|
|
#include "disassembler.cpp"
|
|
#include "serialization.cpp"
|
|
|
|
void ARM::power() {
|
|
processor.power();
|
|
vector(0x00000000, Processor::Mode::SVC);
|
|
pipeline.reload = true;
|
|
crash = false;
|
|
r(15).modify = [&] {
|
|
pipeline.reload = true;
|
|
};
|
|
|
|
trace = false;
|
|
instructions = 0;
|
|
}
|
|
|
|
void ARM::exec() {
|
|
cpsr().t ? thumb_step() : arm_step();
|
|
}
|
|
|
|
void ARM::idle() {
|
|
bus_idle(r(15));
|
|
}
|
|
|
|
uint32 ARM::read(uint32 addr, uint32 size) {
|
|
uint32 word = bus_read(addr, size);
|
|
sequential() = true;
|
|
return word;
|
|
}
|
|
|
|
uint32 ARM::load(uint32 addr, uint32 size) {
|
|
sequential() = false;
|
|
uint32 word = read(addr, size);
|
|
|
|
if(size == Half) { word &= 0xffff; word |= word << 16; }
|
|
if(size == Byte) { word &= 0xff; word |= word << 8; word |= word << 16; }
|
|
|
|
word = ror(word, 8 * (addr & 3));
|
|
idle();
|
|
|
|
if(size == Half) word &= 0xffff;
|
|
if(size == Byte) word &= 0xff;
|
|
return word;
|
|
}
|
|
|
|
void ARM::write(uint32 addr, uint32 size, uint32 word) {
|
|
bus_write(addr, size, word);
|
|
sequential() = true;
|
|
}
|
|
|
|
void ARM::store(uint32 addr, uint32 size, uint32 word) {
|
|
if(size == Half) { word &= 0xffff; word |= word << 16; }
|
|
if(size == Byte) { word &= 0xff; word |= word << 8; word |= word << 16; }
|
|
|
|
sequential() = false;
|
|
write(addr, size, word);
|
|
sequential() = false;
|
|
}
|
|
|
|
void ARM::vector(uint32 addr, Processor::Mode mode) {
|
|
auto psr = cpsr();
|
|
processor.setMode(mode);
|
|
spsr() = psr;
|
|
cpsr().i = 1;
|
|
cpsr().f |= mode == Processor::Mode::FIQ;
|
|
cpsr().t = 0;
|
|
r(14) = pipeline.decode.address;
|
|
r(15) = addr;
|
|
}
|
|
|
|
}
|