Method Interrupt

src/arch/aarch64/interrupt.cpp:27–61

}  // namespace

Interrupt::Interrupt() {
  auto [dist_base_addr, dist_size, redist_base_addr, redist_size] =
      KernelFdtSingleton::instance().GetGIC().value();
  VirtualMemorySingleton::instance()
      .MapMMIO(dist_base_addr, dist_size)
      .or_else([](Error err) -> Expected<void*> {
        klog::Err("Failed to map GIC distributor MMIO: {}", err.message());
        while (true) {
          cpu_io::Pause();
        }
        return std::unexpected(err);
      });
  VirtualMemorySingleton::instance()
      .MapMMIO(redist_base_addr, redist_size)
      .or_else([](Error err) -> Expected<void*> {
        klog::Err("Failed to map GIC redistributor MMIO: {}", err.message());
        while (true) {
          cpu_io::Pause();
        }
        return std::unexpected(err);
      });

  gic_ = std::move(Gic(dist_base_addr, redist_base_addr));

  // 注册默认中断处理函数
  for (auto& i : interrupt_handlers_) {
    i = InterruptDelegate::create<DefaultInterruptHandler>();
  }

  // 设置 SGI 0 用于 IPI
  auto cpuid = cpu_io::GetCurrentCoreId();
  gic_.Sgi(0, cpuid);

  klog::Info("Interrupt init.");
}

auto Interrupt::Do(uint64_t cause, cpu_io::TrapContext* context) -> void {
  cpu_io::ICC_EOIR1_EL1::Write(cause);