21 lines
855 B
Python
21 lines
855 B
Python
|
from insn_UJ import *
|
||
|
|
|
||
|
|
class rvfi_insn_jal(rvfi_insn_UJ):
|
||
|
|
def __init__(self):
|
||
|
|
super(rvfi_insn_jal, self).__init__()
|
||
|
|
def ports(self):
|
||
|
|
return super(rvfi_insn_jal, self).ports()
|
||
|
|
def elaborate(self, platform):
|
||
|
|
m = super(rvfi_insn_jal, self).elaborate(platform)
|
||
|
|
|
||
|
|
# JAL instruction
|
||
|
|
next_pc = Signal(32)
|
||
|
|
m.d.comb += next_pc.eq(self.rvfi_pc_rdata + self.insn_imm)
|
||
|
|
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b1101111))
|
||
|
|
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
|
||
|
|
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + 4, 0))
|
||
|
|
m.d.comb += self.spec_pc_wdata.eq(next_pc)
|
||
|
|
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
|
||
|
|
|
||
|
|
return m
|