Spike, a RISC-V ISA Simulator
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15 lines
254 B

require_extension('P');
require_rv64;
sreg_t sshamt = P_FIELD(RS2, 0, 8);
if (sshamt < 0) {
if (sshamt <= -64)
WRITE_RD(0);
else
WRITE_RD(RS1 >> (-sshamt));
} else {
if (sshamt >= 64)
WRITE_RD(0);
else
WRITE_RD(RS1 << sshamt);
}