Re: [9fans] Stack initialisation

[Lucio De Re <lucio@proxima.alt.za>]

On Tue, Aug 29, 2000 at 11:08:51PM +0000, forsyth@vitanuova.com wrote:
> 
> >>	Ptab    = 0xbfff5000,    /* Private stack */
> >>	Execstk = 0xbf001000,    /* Exec stack linkage area */
> 
> the values are related to those of USTKTOP and USTKSIZE
> in the  2nd edition kernel, both of which differ in the 3rd edition
> kernel, since the arrangement of virtual memory has changed slightly
> (on the PC at least).

Well, to reveal the truth, the new values (that work, that is, I think
I can tweak them further) are

	Ptab     = 0x7fff5000,  (could possibly be 0x7fffe000)
	Execstk  = 0x7f001000,	(not sure about this one)

(thank you, Charles, you put me on the right track), and now I have
a version of Alef for 3rd Edition Plan 9 that (apparently) compiles
and executes programs on my i386 PC.  Anyone got something easier than
the test/ programs.  I tried sieve, pstest and tstbio with seeming
success, I'm not sure what test should produce and I have not tried
anything else.

I haven't yet tackled the graphic libraries (libg.a and libframe.a), I
suspect I won't get that right alone, but I'll give it a good try.
Only too happy to feed back the changed sources to Bell Labs, and do
whatever necessary to keep them current.

I have no idea what other changes to the 2ed libraries I may have
neglected, and so on; feel free to push me in the right direction.

++L