i686/test_gdt.cc


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#include <gtest/gtest.h>

#define _Static_assert static_assert
#include "gdt.c"
#include "gdt.h"

TEST(i686GDT, KnownAccessByteValues)
{
  EXPECT_EQ(*(uint8_t *)&null_access, 0x00);
  EXPECT_EQ(*(uint8_t *)&ktext_access, 0x9a);
  EXPECT_EQ(*(uint8_t *)&kdata_access, 0x92);
}

TEST(i686GDT, NullSegmentDescriptor)
{
  struct SegmentDescriptor_t d;
  SegmentDescriptor(&d, 0, 0, 0);
  EXPECT_EQ(*(uint64_t *)&d, 0);
}

TEST(i686GDT, SegmentIndex)
{
  EXPECT_EQ(ktextDescriptor, 0x10);
  EXPECT_EQ(kdataDescriptor, 0x18);
}