[B2-devel] patches for BasiliskII/SheepShaver Linux NetDriver source

[Joel M. <jo...@wa...>]

Hi

I managed to install a full new Gentoo Linux on my laptop and eventually came to
the SheepShaver stuff to replace my old WallStreet by an emulator so I can
continue to work with the documents created previously.
I fell upon the last problems published while building SheepShaver and NetDriver
on a Linux 2.6.31 kernel with Gentoo distribution :

$ uname -srvmpio
Linux 2.6.31-gentoo-r6 #6 SMP Wed Mar 17 20:03:01 CET 2010 x86_64 Intel(R)
Core(TM)2 Duo CPU T7500 @ 2.20GHz GenuineIntel GNU/Linux

And try my best to have it going on getting help from basilisk-devel list. Once
the whole thing worked I can have Mac OS 9.04 from an X window on my Linux box
and get access to the Internet into the emulator through NetDriver and a wired
or wireless connection.

from the official SheepShaver website I put BasiliskII and SheepShaver side by
side into the same root directory.

- The first patch "SheepShaver_Makefile.patch" let makefile build relatives
links between SheepShaver and BasiliksII so they can be moved anywhere into the
file system as long as they stay side by side without having to rebuid the
links. This patch is not mandatory.

- the second patch "sigsegv.patch" is needed with new GCC as it had become too
smart and trigger an error on range address when a page fault was traped.

$ gcc --version
gcc (Gentoo 4.3.4 p1.1, pie-10.1.5) 4.3.4
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

We need to slice the binary created to be sure the address of the trap is within
the test addresses. This is why each trap occur between two case labels and a
new section of assembly code is set in between.

- The third and forth patches "sheep_net.patch" and "NetDriver_Makefile.patch"
come from "Spoelstra, Howard" <How...@ou...> witch talk of them on the
Basilisk-devel list. Also the fact that locking kernel is no more allowed.

If someone is interested by the four of them they are bind for convenience in
"all_4_sheep.patch" that can be applied from the directory containing BasiliskII
and SheepShaver loaded from CVS :

$ patch -p0 < all_4_sheep.patch

To load the driver I need the next commands on my system (only root can set
them, so I created a script launched at startup) :
	modprobe sheep_net
	chmod o+rw /dev/sheep_net
	sysctl -w vm.mmap_min_addr=0

Greatings,
Joel