[Libre-soc-bugs] [Bug 425] New: DIV overflow not being calculated correctly

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Fri Jul 10 00:17:32 BST 2020


            Bug ID: 425
           Summary: DIV overflow not being calculated correctly
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Source Code
          Assignee: lkcl at lkcl.net
          Reporter: lkcl at lkcl.net
                CC: libre-soc-bugs at lists.libre-soc.org
   NLnet milestone: ---

this example does not compute overflow correctly in div output_stage.py:

        lst = ["divw. 3, 1, 2"]
        initial_regs = [0] * 32
        initial_regs[1] = 0x61c1cc3b80f2a6af
        initial_regs[2] = 0x9dc66a7622c32bc0

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