Lines Matching +full:0 +full:x31

25 	 * register will contain 0, and we should continue on the current TP.
37 	andi sp, sp, 0x1
74 	 * Set the scratch register to 0, so that if a recursive exception
103 	REG_L t0, 0(t0)
179 	/* we reach here from kernel context, sscratch must be 0 */
180 	csrrw x31, CSR_SCRATCH, x31
181 	asm_per_cpu sp, overflow_stack, x31
182 	li x31, OVERFLOW_STACK_SIZE
183 	add sp, sp, x31
184 	/* zero out x31 again and restore x31 */
185 	xor x31, x31, x31
186 	csrrw x31, CSR_SCRATCH, x31