SW_R23 98 arch/nios2/include/asm/entry.h stw r23, SW_R23(sp) SW_R23 112 arch/nios2/include/asm/entry.h ldw r23, SW_R23(sp) SW_R23 61 arch/nios2/kernel/asm-offsets.c OFFSET(SW_R23, switch_stack, r23);