static binary: otool). Dynamic binaires have a pointer to the Mach-O
header on the top of the stack, static binaries don't have this, and
having it produced a crash.
One bugfix: the EXEC_MACHO code assumes that entry = NULL means that
the entry point has not been found in the load commands seen so far.
Therefore we need to initialized entry to NULL if we want a static binary
to discover it. (dynamic binaries were forced to iscover it because when
the intepreter load command is found, entry is updated whatever its
value was before).
One hack: Both COMPAT_MACH and COMPAT_DARWIN are willing to run Mach-O
binaries. COMPAT_MACH fails for dynamic binaries because it cannot find
the interpreter in /emul/mach. For static binaires, it will accept them
(and for Darwin static binaries, this will cause a failure). Until we
rite a test for matchinf Darwin static binaries, just swap the order of
COMPAT_MACH and COMPAT_DARWIN in the exec switch so that COMPAT_DARWIN
is tried first (this will have the advantage of speeding up program
startup). EXECSW_PRIO_{FIRST_LAST} does not seem to work...
(not really related the the actual mouse movement, but this will come).
The darwin_iohidsystem_thread reads events from wscons, translates them
into IOHIDSystem events and wakes up the userland client with a notification.
To do this, I had to improve the void implementation of
io_connect_set_notification_port() to actually register something (I assumed
a single notification port, which makes some sense since only one process
seems to be able to open the driver)
Missing bits:
- we do not take event masks given by the process into account.
- the notification message has not been checked against Darwin
- events are badly translated
and make the stack and heap non-executable by default. the changes
fall into two basic catagories:
- pmap and trap-handler changes. these are all MD:
= alpha: we already track per-page execute permission with the (software)
PG_EXEC bit, so just have the trap handler pay attention to it.
= i386: use a new GDT segment for %cs for processes that have no
executable mappings above a certain threshold (currently the
bottom of the stack). track per-page execute permission with
the last unused PTE bit.
= powerpc/ibm4xx: just use the hardware exec bit.
= powerpc/oea: we already track per-page exec bits, but the hardware only
implements non-exec mappings at the segment level. so track the
number of executable mappings in each segment and turn on the no-exec
segment bit iff the count is 0. adjust the trap handler to deal.
= sparc (sun4m): fix our use of the hardware protection bits.
fix the trap handler to recognize text faults.
= sparc64: split the existing unified TSB into data and instruction TSBs,
and only load TTEs into the appropriate TSB(s) for the permissions.
fix the trap handler to check for execute permission.
= not yet implemented: amd64, hppa, sh5
- changes in all the emulations that put a signal trampoline on the stack.
instead, we now put the trampoline into a uvm_aobj and map that into
the process separately.
originally from openbsd, adapted for netbsd by me.
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.
Bump the kernel rev up to 1.6V
We try to map the console framebuffer through wsdisplay. It seems to work,
but we still need to _see_ something.
XXX Framebuffer size discovery is borken.
+ In ioframebuffer and iohidsystem:
More methods and more debug for io_connect_method_*
+ A few new IOKit mach traps.
Peeking at Darwin's header files gives some ideas of what we are doing here.
We know understand most of the stuff called by XDarwin and WindowServer before
mapping the framebuffer.
lukem