arch/x86_64/src/kernel/cpu/ss.cpp


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#include "arch/kernel/cpu/ss.hpp"

namespace teachos::arch::kernel::cpu
{
  auto read_ss() -> context_switching::interrupt_descriptor_table::segment_selector
  {
    context_switching::interrupt_descriptor_table::segment_selector segment_selector{};
    asm volatile("mov %%ss, %[output]" : [output] "=m"(segment_selector));
    return segment_selector;
  }

  auto write_ss(context_switching::interrupt_descriptor_table::segment_selector selector) -> void
  {
    asm volatile("mov %[input], %%ss" : /* no output from call */ : [input] "m"(selector));
  }
}  // namespace teachos::arch::kernel::cpu