csrrc

Operands

reg, csr, reg

Atomic Read/Clear CSR: read from the CSR into t0 and clear bits of the CSR according to t1

Atomic Read/Clear CSR: read from the CSR into t0 and clear bits of the CSR according to t1 csrrc t0, fcsr, t1

# Initialize fcsr=1; csrrc returns old fcsr in t0 and leaves fcsr=0.
.text
li t3, 1
csrw t3, fcsr
li t1, 1
csrrc t0, fcsr, t1
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