tag	line	file	source code
COPY_SEG	209	kernel/signal.c	COPY_SEG(ds);
COPY_SEG	210	kernel/signal.c	COPY_SEG(es);
COPY_SEG	211	kernel/signal.c	COPY_SEG(fs);
COPY_SEG	212	kernel/signal.c	COPY_SEG(gs);