a21               144 arch/c6x/include/uapi/asm/ptrace.h 	REG_PAIR(a21, a20);
a21                21 arch/c6x/kernel/asm-offsets.c 	OFFSET(REGS_A21,	pt_regs, a21);
a21                47 arch/c6x/kernel/signal.c 	COPY(a20); COPY(a21); COPY(a22); COPY(a23);
a21               112 arch/c6x/kernel/signal.c 	COPY(a20); COPY(a21); COPY(a22); COPY(a23);
a21                55 arch/c6x/kernel/traps.c 	pr_err("A21: %08lx  B21: %08lx\n", regs->a21, regs->b21);