SW_R22 97 arch/nios2/include/asm/entry.h stw r22, SW_R22(sp) SW_R22 111 arch/nios2/include/asm/entry.h ldw r22, SW_R22(sp) SW_R22 60 arch/nios2/kernel/asm-offsets.c OFFSET(SW_R22, switch_stack, r22);