tag	line	file	source code
r21	68	arch/alpha/kernel/process.c	regs->r19, regs->r20, regs->r21, regs->r22);
r21	92	arch/alpha/kernel/ptrace.c	PT_REG(    r20), PT_REG(    r21), PT_REG(    r22), PT_REG(   r23),
r21	114	arch/alpha/kernel/signal.c	regs->r21 = get_fs_quad(sc->sc_regs+21);
r21	174	arch/alpha/kernel/signal.c	put_fs_quad(regs->r21, sc->sc_regs+21);
r21	35	arch/alpha/kernel/traps.c	regs->r20, regs->r21, regs->r22, regs->r23);
r21	31	include/asm-alpha/ptrace.h	unsigned long r21;