SW_RA 101 arch/nios2/include/asm/entry.h stw ra, SW_RA(sp) SW_RA 115 arch/nios2/include/asm/entry.h ldw ra, SW_RA(sp) SW_RA 64 arch/nios2/kernel/asm-offsets.c OFFSET(SW_RA, switch_stack, ra);