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riscv-formal-nmigen
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Add SRL instruction

This commit is contained in:
Donald Sebastian Leung 2020-08-07 15:39:46 +08:00
parent d106ceede7
commit 4f7cf5a370
1 changed files with 11 additions and 0 deletions
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insns/InsnSrl.py Normal file
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from InsnRV32IRType import *
class InsnSrl(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super(InsnSrl, self).__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b0000000, 0b100, 0b0110011)
def elaborate(self, platform):
m = super(InsnSrl, 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