Gilles Chanteperdrix wrote:
> Hi,
>
> here come the pull request for user-space signals support. The simple
> solution; handling signals upon system call return, has been implemented
> since the other solution (handling signals upon any return to
> user-space) required to change the I-pipe patch, and so made the
> upcoming 2.5 only compatible with newer patches.
>
> We pass to kernel-space a sixth argument which is a pointer where
> information about received signals is stored by kernel.
>
> The only architecture for which the implementation is peculiar is
> x86_32, because the register used as sixth argument is ebp, also used
> for the libc backtrace function implementation, so I tried to find a
> solution which makes backtracing still possible (otherwise we would have
> said bye-bye to involuntary mode changes chasing with SIGXCPU) without
> breaking too many things.
>
> A new test, creatively called sigtest allows to unit-test the signal
> support.
>
> The following changes since commit 5a29ba38d7563097b73f53615fb3fcb7a7e5a6a5:
> Philippe Gerum (1):
> nucleus: initialize heap->stat_link holder
>
> are available in the git repository at:
>
> git+ssh://git.xenomai.org/xenomai-gch.git for-head
>
> Gilles Chanteperdrix (12):
> bind: Replace bind.h with a convenience library.
> skins: add per-skin user-space signal handler, and dispatch function.
> arm: implement signals handling
> powerpc: implement signals handling
This commit was credited to the wrong author, should be fixed now.
--
Gilles.
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