M-Labs/riscv-formal-nmigen
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Add SLL instruction

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This commit is contained in:
Donald Sebastian Leung 2020-08-07 15:25:05 +08:00
parent 060dd98919
commit 44bdff60c8
1 changed files with 11 additions and 0 deletions
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insns/InsnSll.py Normal file
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from InsnRV32IRType import *
class InsnSll(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super(InsnSll, self).__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b0000000, 0b001, 0b0110011)
def elaborate(self, platform):
m = super(InsnSll, self).elaborate(platform)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata << Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]), 0))
return m