No subject

	xlat 1234
or
	xlat 0x1234

are taken as VA's (see discussion about default address
interpretation), so "xlat" will print the PA.

	xlat 1234.p
or
	xlat 0x1234.p

has a PA as argument, so it prints the VA.

Multiple arguments (even mixed) might be allowed, too, for example:

	xlat 1234 1234.p 5678 5678.p


> Thoughts:
>    vtop(virtual) returns physical
>    ptov(physical) returns virtual
> or (see below thought on 0v / 0p)
>    xlat(0p1234) returns virtual
>    xlat(0v1234) returns physical
>    xlat(0x1234) returns physical (per convention from snipped discussion)

Seems too complex for a simple mind like mine ;-)

> Question: Do we need a translation function?

Define "need". It is certainly very useful, especially if things don;t
work as expected and you want to check address translation.

See the "xlat" command in the BDI2000 - how often did you use that?

[Right, I didn't invent that name. I'm recycling used bits. Hope this
is OK.]

> Thought:
>    0v6789ABCD is a virtual address (the value is interpreted as hex)
>    0p6789ABCD is a physical address
> 
> Of course "v" and "p" should be accepted in either case.
> 
> Kinda ugly, but fits into the 0x style conventions.

I tend to allow for suffixes, i. e. "6789ABCD" or "6789ABCD.v" are
VAs, while "6789ABCD.p" is a PA.

To me, that is easier to read.

> I haven't looked at the number parsing code to see how hard it would be 
> to squeeze this into it.

Not really difficult.

> Stuff face, write code.  Does it get any better than that?  ;-)

I'm an optimist, to yes, of course it does. The amount of code that
needs to get written grows and grows. Enough work for all of us :-)

Best regards,

Wolfgang Denk

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