On Tue, 12 Dec 2006, Kyle Moffett wrote:
>
> So now I have to figure out how to set up a new syscall personality with a
> bunch of wrapper syscalls which reorder arguments and translate constant
> values before calling into the rest of the Linux code. I'm fairly sure it's
> possible because you can run some Solaris binaries under Linux if you turn on
> the appropriate BINFMT_* config option(s), but I'm totally unsure as to _how_.
What system call interface do Mach-O binaries use? Is it the old stupid
"lcall 7,0" thing, or does it use "sysenter" or something like that?
If it's sysenter, it's going to be "interesting". That code currently
doesn't support any kind of emulation, and the whole "sysenter" interface
is pretty grotty at a CPU level (it doesn't even save eip etc). So you'd
need to delve into x86 asm and arch/i386/kernel/entry.S (or the x86-64
equivalent).
Linus
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