Fix incorrect behaviour with INT_MAX pmpaddr #773
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This fixes a bug if you set `pmpaddr` to `ones()`. For NAPOT it would return `(zeros(), zeros())`. For NA4 it would return `(ones(), zeros())`. In both cases it will match no addresses, whereas it should match all memory, or the top 4 bytes respectively. A test is included for NAPOT that fails before and passes afterwards. Fixes riscv#739
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This fixes a bug if you set
pmpaddrtoones(). For NAPOT it would return(zeros(), zeros()). For NA4 it would return(ones(), zeros()). In both cases it will match no addresses, whereas it should match all memory, or the top 4 bytes respectively.A test is included for NAPOT that fails before and passes afterwards.
Fixes #739