GDT_ADDR_MEM
set_mem_segment(GDT_ADDR_MEM(gdtstore, GCODE_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GDATA_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUCODE_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUDATA_SEL), 0,
*GDT_ADDR_MEM(gdtstore, GUCODE_SEL);
*GDT_ADDR_MEM(gdtstore, GUDATA_SEL);
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUCODE32_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUDATA32_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUFS_SEL), 0,
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUGS_SEL), 0,