[B2-devel] SheepShaver 64-bit fixes & BeOS/PPC

[Gwenole B. <gb...@di...>]

Hi,

I am about to commit many fixes to make SheepShaver run on 64-bit 
platforms, especially AMD64. I introduced a new thunking system so that 
code & data could be shared with MacOS. The trick is to also make sure 
SheepShaver globals are 32-bit addressable.

I also updated BeOS/PPC bits but I have no such system to test, so please 
someone with it check. <hint> ;-)

I tried to keep changes minimal, so I introduced new objects to deal with
shared data with MacOS. The storage is stack-like and are meant to be used
as temp local data. Basically:

- SheepVar: reserve a certain amount of memory
- SheepVar32: an uint32 value in big endian format
- SheepString: a copy of the string to 32-bit addressable data
- SheepArray<>: an array with size specified from template arg
The latter is purely for optimization purposes on 32-bit arches

Bye,
Gwenole.