[Libre-soc-bugs] [Bug 604] ISACaller simulator needs RADIX MMU support

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=604

--- Comment #13 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
from radixwalk.cc, walkTree needs to be:

std::pair<Addr, Fault>
RadixWalk::walkTree(Addr vaddr ,
    uint64_t curBase,
    BaseTLB::Mode mode,
    uint64_t curSize ,
    uint64_t usefulBits)

mode will be:

* execute (instructions)
* load or
* store

curSize and usefulBits are shift and mask

curBase starts at the root page and works up from there.

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