From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 12 Dec 2021 18:56:48 +0000 (+0000)
Subject: copy  over fake OP_FETCH_FAILED and instruction on instr_fault
X-Git-Tag: sv_maxu_works-initial~634
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b1b11869265f13fbdc6fbaac0a521b1e7dae04a8;p=openpower-isa.git

copy  over fake OP_FETCH_FAILED and instruction on instr_fault
---

diff --git a/src/openpower/decoder/power_decoder2.py b/src/openpower/decoder/power_decoder2.py
index 271fb971..3517dafa 100644
--- a/src/openpower/decoder/power_decoder2.py
+++ b/src/openpower/decoder/power_decoder2.py
@@ -1509,9 +1509,12 @@ class PowerDecode2(PowerDecodeSubset):
         # absolute top priority: check for an instruction failed
         with m.If(self.instr_fault):
             comb += self.e.eq(0)  # reset eeeeeverything
+            comb += self.do_copy("insn", self.dec.opcode_in, True)
             comb += self.do_copy("insn_type", MicrOp.OP_FETCH_FAILED, True)
             comb += self.do_copy("fn_unit", Function.MMU, True)
             comb += self.do_copy("nia", self.state.pc, True)  # PC
+            # special override on internal_op, due to being a "fake" op
+            comb += self.dec.op.internal_op.eq(MicrOp.OP_FETCH_FAILED)
 
         # LD/ST exceptions.  TestIssuer copies the exception info at us
         # after a failed LD/ST.