kernel/arm: remove unused function arch_check_syscall_restart

Change-Id: I5cb8643937cf1dccfce21dbb1478b0468e99a7e8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6439
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

kernel/arm: use inline functions for accessing coproc registers

Change-Id: I626ef5722f4ae043de9e8b0c37dbde97ac0513be
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6422
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

kernel/thread: Refactor thread-local-storage initialization and updating.

* TLS slots are not in any way architecture-specific; we do not even
have a mechanism by which they could be made so at present.
Thus, the initialization of them can be moved to common code, and
out of the per-architecture implementations.

* When dealing with a fork()ed thread, it will already have a TLS array
with values set in it. Therefore, do not overwrite the whole array,
but instead only update the specific values which have changed on fork.
This fixes at least part of #17896.

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: save FPU registers on context switch

Change-Id: Icb62688338d3a3083f8f6d1874cae3218ba042e0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5614
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/arm: store current thread pointer in TPIDRPRW register

Use the Privileged Only Thread ID Register aka TPIDRPRW to store
the current thread pointer.

The Privileged Only Thread ID Register is only accessible
in privileged modes, and is read/write.

see: ARMv7 Architecture Reference Manual,
section B3.12.46 CP15 c13 Software Thread ID registers

Change-Id: I5273bee8a80b78cdc547b2f6c96632d120eb3d55
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5608
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

kernel/arm/thread: convert TRACE to new syntax

Change-Id: Iaf2876b92c130196a671f274e5fc36f6cccf1d0e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5445
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>

implement TLS for arm

Use the User Read-only Thread ID Register aka TPIDRURO to store
TLS pointer.

The User Read-only Thread ID Register is read-only in User mode,
and read/write in privileged modes.

see: ARMv7 Architecture Reference Manual,
section B3.12.46 CP15 c13 Software Thread ID registers

Change-Id: I7bff2fd66f41d7bf1a8a247151bcd02b32733c1b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4994
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

kernel/arch/arm: swap TTBR on thread context switch

Change-Id: Ie85742d077866c10ba57b46848d5acaef932615e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4982
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: X512 <danger_mail@list.ru>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

ARM: kernel: Make KDL more useful on ARM

This adds the -mapcs-frame compiler flag for ARM to have "stable"
stack frames, adds support to the kernel for dumping stack crawls,
and initial support for iframes. There' much more functionality
to unlock in KDL, but this makes debugging already a lot more
comfortable.....

ARM/threads: Disable debug output

Tracing was accidently switched on by a previous commit.

ARM: add context switch implementation

kernel arm: Quick style cleanup; No functional change

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix ARM kernel compilation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40926 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unused <arch>_switch_stack_and_call() and
arch_thread_switch_kstack_and_call().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34971 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the VM headers into subdirectory vm/.
* Renamed vm_cache.h/vm_address_space.h to VMCache.h/VMAddressSpace.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34449 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix ARM build, thx Axel :P


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33618 a95241bf-73f2-0310-859d-f6bbb57e9c96

ARM: kernel: Make KDL more useful on ARM

This adds the -mapcs-frame compiler flag for ARM to have "stable"
stack frames, adds support to the kernel for dumping stack crawls,
and initial support for iframes. There' much more functionality
to unlock in KDL, but this makes debugging already a lot more
comfortable.....

ARM/threads: Disable debug output

Tracing was accidently switched on by a previous commit.

ARM: add context switch implementation

kernel arm: Quick style cleanup; No functional change

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix ARM kernel compilation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40926 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unused <arch>_switch_stack_and_call() and
arch_thread_switch_kstack_and_call().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34971 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the VM headers into subdirectory vm/.
* Renamed vm_cache.h/vm_address_space.h to VMCache.h/VMAddressSpace.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34449 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix ARM build, thx Axel :P


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33618 a95241bf-73f2-0310-859d-f6bbb57e9c96