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compiler,gateware: atomic now stores
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fd00021a52
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7e14f3ca4e
@ -149,10 +149,6 @@ class LLVMIRGenerator:
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self.tbaa_tree,
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ll.Constant(lli64, 1)
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])
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self.tbaa_now = self.llmodule.add_metadata([
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ll.MetaDataString(self.llmodule, "timeline position"),
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self.tbaa_tree
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])
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def needs_sret(self, lltyp, may_be_large=True):
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if isinstance(lltyp, ll.VoidType):
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@ -1152,20 +1148,30 @@ class LLVMIRGenerator:
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return self.map(insn.operands[0])
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elif insn.op == "now_mu":
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llnow = self.llbuilder.load(self.llbuiltin("now"), name=insn.name)
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llnow.set_metadata("tbaa", self.tbaa_now)
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return llnow
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elif insn.op == "at_mu":
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time, = insn.operands
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return self.llbuilder.store(self.map(time), self.llbuiltin("now"))
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lltime = self.map(time)
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lltime_hi = self.llbuilder.trunc(self.llbuilder.lshr(lltime, ll.Constant(lli64, 32)), lli32)
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lltime_lo = self.llbuilder.trunc(lltime, lli32)
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llnow_hiptr = self.llbuilder.bitcast(self.llbuiltin("now"), lli32.as_pointer())
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llnow_loptr = self.llbuilder.gep(llnow_hiptr, [self.llindex(1)])
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llstore_hi = self.llbuilder.store_atomic(lltime_hi, llnow_hiptr, ordering="seq_cst", align=4)
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llstore_lo = self.llbuilder.store_atomic(lltime_lo, llnow_loptr, ordering="seq_cst", align=4)
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return llstore_lo
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elif insn.op == "delay_mu":
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interval, = insn.operands
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llnowptr = self.llbuiltin("now")
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llnow = self.llbuilder.load(llnowptr, name="now.old")
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llnow.set_metadata("tbaa", self.tbaa_now)
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lladjusted = self.llbuilder.add(llnow, self.map(interval), name="now.new")
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llnowstore = self.llbuilder.store(lladjusted, llnowptr)
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llnowstore.set_metadata("tbaa", self.tbaa_now)
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return llnowstore
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lladjusted_hi = self.llbuilder.trunc(self.llbuilder.lshr(lladjusted, ll.Constant(lli64, 32)), lli32)
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lladjusted_lo = self.llbuilder.trunc(lladjusted, lli32)
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llnow_hiptr = self.llbuilder.bitcast(llnowptr, lli32.as_pointer())
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llnow_loptr = self.llbuilder.gep(llnow_hiptr, [self.llindex(1)])
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llstore_hi = self.llbuilder.store_atomic(lladjusted_hi, llnow_hiptr, ordering="seq_cst", align=4)
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llstore_lo = self.llbuilder.store_atomic(lladjusted_lo, llnow_loptr, ordering="seq_cst", align=4)
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return llstore_lo
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elif insn.op == "watchdog_set":
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interval, = insn.operands
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return self.llbuilder.call(self.llbuiltin("watchdog_set"), [self.map(interval)])
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@ -87,18 +87,15 @@ class KernelInitiator(Module, AutoCSR):
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# # #
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now_lo_backing = Signal(32)
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now_hi_backing = Signal(32)
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now = Signal(64, reset_less=True)
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self.sync += [
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# TODO: fix compiler and make atomic
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#If(self.now_lo.re, now_lo_backing.eq(self.now_lo.r)),
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#If(self.now_hi.re, now.eq(Cat(now_lo_backing, self.now_hi.r)))
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If(self.now_lo.re, now[:32].eq(self.now_lo.r)),
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If(self.now_hi.re, now[32:].eq(self.now_hi.r))
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If(self.now_hi.re, now_hi_backing.eq(self.now_hi.r)),
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If(self.now_lo.re, now.eq(Cat(self.now_lo.r, now_hi_backing)))
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]
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self.comb += [
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self.now_lo.w.eq(now[:32]),
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self.now_hi.w.eq(now[32:])
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self.now_hi.w.eq(now[32:]),
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self.now_lo.w.eq(now[:32])
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]
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self.comb += [
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@ -20,7 +20,7 @@ requirements:
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- microscope
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- binutils-or1k-linux >=2.27
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- llvm-or1k 6.0.0
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- llvmlite-artiq 0.23.0.dev py35_4
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- llvmlite-artiq 0.23.0.dev py35_5
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- rust-core-or1k 1.28.0 21
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- openocd 0.10.0 6
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- lit
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