kernel/arm: implement signals, fork, restart syscall

Change-Id: I24219b83d90710ef719190183ba6f069f82dae61
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6198
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

kernel/arm: implement entering userspace

Change-Id: Icf3945db979a8f4444856fc7157649f48b297c29
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5037
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

commpage: randomize position of commpage

This patch introduces randomization of commpage position. From now on commpage
table contains offsets from begining to of the commpage to the particular
commpage entry. Similary addresses of symbols in ELF memory image "commpage"
are just offsets from the begining of the commpage.

This patch also updates KDL so that commpage entries are recognized and shown
correctly in stack trace. An update of Debugger is yet to be done.

[GSoC] [ARM] Patch by Johannes Wischert.
Placeholder private headers for the kernel and libroot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31820 a95241bf-73f2-0310-859d-f6bbb57e9c96

commpage: randomize position of commpage

This patch introduces randomization of commpage position. From now on commpage
table contains offsets from begining to of the commpage to the particular
commpage entry. Similary addresses of symbols in ELF memory image "commpage"
are just offsets from the begining of the commpage.

This patch also updates KDL so that commpage entries are recognized and shown
correctly in stack trace. An update of Debugger is yet to be done.

[GSoC] [ARM] Patch by Johannes Wischert.
Placeholder private headers for the kernel and libroot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31820 a95241bf-73f2-0310-859d-f6bbb57e9c96