From 133821d5dace2a6184b38bb8dac0fc095fef303f Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Thu, 18 Mar 2021 20:02:32 +0000 Subject: [PATCH] add comments on most likely place to put predicate mask read-firing --- src/soc/simple/issuer.py | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/soc/simple/issuer.py b/src/soc/simple/issuer.py index 27f85ac7..ecc78d97 100644 --- a/src/soc/simple/issuer.py +++ b/src/soc/simple/issuer.py @@ -156,6 +156,11 @@ class TestIssuerInternal(Elaboratable): # pulse to synchronize the simulator at instruction end self.insn_done = Signal() + if self.svp64_en: + # store copies of predicate masks + self.srcmask = Signal(64) + self.dstmask = Signal(64) + def fetch_fsm(self, m, core, pc, svstate, nia, is_svp64_mode, fetch_pc_ready_o, fetch_pc_valid_i, fetch_insn_valid_o, fetch_insn_ready_i): @@ -247,6 +252,10 @@ class TestIssuerInternal(Elaboratable): insn = get_insn(self.imem.f_instr_o, cur_state.pc+4) sync += dec_opcode_i.eq(insn) m.next = "INSN_READY" + # TODO: probably can start looking at pdecode2.rm_dec + # here (or maybe even in INSN_READ state, if svp64_mode + # detected, in order to trigger - and wait for - the + # predicate reading. with m.State("INSN_READY"): # hand over the instruction, to be decoded -- 2.30.2