GUCODE_SEL
set_mem_segment(GDT_ADDR_MEM(gdtstore, GUCODE_SEL), 0,
*GDT_ADDR_MEM(gdtstore, GUCODE_SEL);
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
((s) == GSEL(GUCODE_SEL, SEL_UPL) || (s) == LSEL(LUCODE_SEL, SEL_UPL))
GUCODEBIG_SEL : GUCODE_SEL;
setsegment(&gdtstore[GUCODE_SEL].sd, 0, x86_btop(I386_MAX_EXE_ADDR) - 1,
ldtstore[LUCODE_SEL] = gdtstore[GUCODE_SEL];
GUCODEBIG_SEL : GUCODE_SEL;
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
sigframe.uc.luc_mcontext.cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);