LUCODE_SEL
tf->tf_cs = LSEL(LUCODE_SEL, SEL_UPL);
*(struct mem_segment_descriptor *)(ldtstore + LUCODE_SEL) =
mcp->__gregs[_REG_CS] = LSEL(LUCODE_SEL, SEL_UPL);
tf->tf_cs = LSEL(LUCODE_SEL, SEL_UPL);
regs[_REG_CS] = LSEL(LUCODE_SEL, SEL_UPL);
tf->tf_cs = LSEL(LUCODE_SEL, SEL_UPL);
((s) == GSEL(GUCODE_SEL, SEL_UPL) || (s) == LSEL(LUCODE_SEL, SEL_UPL))
ldtstore[LUCODE_SEL] = gdtstore[GUCODE_SEL];
LSEL(LUCODEBIG_SEL, SEL_UPL) : LSEL(LUCODE_SEL, SEL_UPL);