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Sort of working OS allocator, except freeing is impossible

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wheremyfoodat 2022-09-16 23:36:55 +03:00
parent 2128d5060b
commit 93f5ec7bb4
8 changed files with 186 additions and 40 deletions
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20
src/emulator.cpp
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@ -1,8 +1,14 @@
#include "emulator.hpp"
void Emulator::reset() {
memory.reset();
cpu.reset();
kernel.reset();
cpu.setReg(13, VirtualAddrs::StackTop); // Set initial SP
if (romType == ROMType::ELF) { // Reload ELF if we're using one
loadELF(loadedROM);
}
}
void Emulator::step() {}
@ -35,11 +41,21 @@ void Emulator::runFrame() {
}
bool Emulator::loadELF(std::filesystem::path& path) {
std::optional<u32> entrypoint = memory.loadELF(path);
loadedROM.open(path, std::ios_base::binary); // Open ROM in binary mode
romType = ROMType::ELF;
return loadELF(loadedROM);
}
bool Emulator::loadELF(std::ifstream& file) {
// Rewind ifstream
loadedROM.clear();
loadedROM.seekg(0);
std::optional<u32> entrypoint = memory.loadELF(loadedROM);
if (!entrypoint.has_value())
return false;
cpu.setReg(13, VirtualAddrs::StackTop); // Set initial SP
cpu.setReg(15, entrypoint.value()); // Set initial PC
return true;
}