NetBSD_and_the_experimental_Darwin_binary_compatibility - heldersrvio/PureDarwin GitHub Wiki
Appeared as a significant change in NetBSD 3.0 (Support for MacOS X.3 binaries. [manu 20040825]). "compat_darwin(8) emulation now supports Mac OS X version 10.3 binaries" was announced. Kernel stuff
/netbsd
Assuming you have set a default proper environment for compiling your kernel: In the /usr/src/sys/arch/<your ARCH>/conf/<your CONFIG>
At least, you have to enable these options:
options COMPAT_DARWIN # Darwin binary compatibility (experimental) options COMPAT_MACH # Mach compatibility, needed for COMPAT_DARWIN options EXEC_MACHO # Mach-O binary support, needed for COMPAT_MACH
Optionnaly, uncomment the following:
#options DEBUG_DARWIN # COMPAT_DARWIN debugging #options DEBUG_MACH # COMPAT_MACH debugging
After editing your configuration file, you can begin to build the kernel:
cd /usr/src/sys/arch/<your ARCH>/conf/ config <your CONFIG> cd ../compile/<your CONFIG> make depend make cp /netbsd /netbsd.old cp netbsd /netbsd Then reboot..
Problem: The build fails in darwin_commpage_machdep.S with this kind of errors:
Assembler messages:
Error: bad expression
Error: syntax error; found 4' but expected ,'
Error: junk at end of line: `4,0'
Error: bad expression
Solution: You need to remove all "%" character before each asm register names (e.g.; %r4 should become r4) in the problematic file, then redo all the necessary steps from the beginning to build the kernel
By default: sysctl -a | grep darwin emul.darwin.init.pid = 0 emul.darwin.ioframebuffer.unit = 0 emul.darwin.ioframebuffer.screen = 0 emul.darwin.iohidsystem.mux = 0
In the source code of darwin_sysctl.c, we can read: /* * On Darwin, mach_init is the system bootstrap process. It is responsible * for forking the traditional UNIX init(8) and it does the Mach port naming * service. We need mach_init for the naming service, but unfortunately, it * will only act as such if its PID is 1. We use a sysctl * (emul.darwin.init.pid) to fool a given process into thinking its PID is 1. * That way we can run mach_init when we want to. * Typical use: * sysctl -w emul.darwin.init.pid=$$; exec /emul/darwin/sbin/mach_init * * The same problem exists after mach_init has forked init: the fork libc stub * really insist on the child to have PID 2 (if PID is not 2, then the stub * will issue bootstrap calls to an already running mach_init, which fails, * of course). */ darwin_lib
"These libraries are part of the Darwin compatibility option for
NetBSD/powerpc and NetBSD/i386.
The kernel options EXEC_MACHO', COMPAT_MACH' and `COMPAT_DARWIN'
must be in your kernel config file for this to work." from /usr/pkgsrc/emulators/darwin_lib/DESCR
cd /usr/pkgsrc/emulators/darwin_lib/ make install clean
If the build fails, you will probably need to edit /usr/pkgsrc/emulators/darwin_lib/Makefile and remove the problematic (XFree86) missing rpm in DISTFILES variable. Attempt to run a mach-o binary
No mach_init is present by default, and mach_init has been dropped...
sysctl -w emul.darwin.init.pid=$$ && exec /emul/darwin/sbin/mach_init
At the root of a mounted old darwin iso (ppc), populate the darwin userland shadow root:
scp -r bin sbin usr <NetBSD macppc host>:/emul/darwin
scp -r System/Library <NetBSD macppc host>:/emul/darwin/System
The process in `ps aux':
USER PID %CPU %MEM VSZ RSS TTY STAT STARTED TIME COMMAND root 412 0.0 0.0 0 0 ttyE0 RW+ - 0:00.00 /emul/darwin/sbin/mach_init
FAIL!
cd /emul/darwin ./usr/bin/uname -a
same state..
root 421 0.0 0.0 0 0 ttyp0 RW+ - 0:00.00 ./usr/bin/uname -a
FAIL!
At this time, darwinppc-141, OpenDarwin6.6.2, darwin-701PPC and darwinx86-801 binaries has been tested without any success. Note: It seems memory is not allocated, an the RW+ status seems curious.
Please, let us know if you have a solution.http://netbsd.gw.com/cgi-bin/man-cgi/man?compat_darwin+8+NetBSD-current http://www.netbsd.org/docs/compat.html#ports http://hcpnet.free.fr/applebsd.html
The goal of this project is to make Darwin more usable by providing an installation ISO, documentation, and add-on software. You are welcome to join #puredarwin on irc.freenode.net or the Gitter chat if you would like to join PureDarwin development and to add to this site.
The Wiki pages were recently moved from Google Sites and in the conversion process some formatting was lost. Please help fixing the markdown of this page by editing it. But please delete nothing, especially not (broken) images; fix them instead (see the main page of the Wiki for an example).