arch/x86_64/kapi/cpu.cpp


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#include "kapi/cpu.hpp"

#include "kapi/system.hpp"

#include "arch/cpu/initialization.hpp"
#include "arch/cpu/interrupts.hpp"

#include <atomic>

namespace kapi::cpu
{

  auto init() -> void
  {
    auto static constinit is_initialized = std::atomic_flag{};

    if (is_initialized.test_and_set())
    {
      system::panic("[x86_64] CPU has already been initialized.");
    }

    arch::cpu::initialize_descriptors();
    arch::cpu::initialize_legacy_interrupts();
    arch::cpu::enable_interrupts();
  }

  auto halt() -> void
  {
    asm volatile("1: hlt\njmp 1b");
    __builtin_unreachable();
  }

}  // namespace kapi::cpu