csrwi
Write CSR immediate
Writes a 5-bit constant into the CSR and discards the value it held before.
Forms
Operands
csr- A control and status register, written by name or number, such as
fcsr,fflags,frm,cycle,time,instret,ustatus,uepc,ucauseorutval. See the supported registers. imm12- A signed 12-bit immediate,
-2048to2047.
# Initialize fcsr to 0; csrwi uses immediate 1 and leaves fcsr=1.
.text
li t3, 0
csrw t3, fcsr
csrwi fcsr, 1
csrr t2, fcsr