1 # CSRRW and CSRRWI always write CSR
2 # CSRRS, CSRRC, CSRRSI and CSRRCI write CSR when rs isn't zero.
9 csrrw zero, cycle, zero
21 csrrwi a0, ustatus, 0xb
24 csrrwi zero, cycle, 0xb
25 csrrwi zero, cycle, 0x0
26 # csrrwi zero, csr, imm
36 csrrs zero, cycle, zero
61 csrrsi a0, ustatus, 0xb
64 csrrsi zero, cycle, 0xb
65 csrrsi zero, cycle, 0x0
66 # csrrsi zero, csr, imm
76 csrrc zero, cycle, zero
82 csrrci a0, ustatus, 0xb
85 csrrci zero, cycle, 0xb
86 csrrci zero, cycle, 0x0
87 # csrrci zero, csr, imm