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/arm: adjust function names for getting/setting SCTLR

Change-Id: I28d6101c772a5065beec5af20f6d2a0c1855ae6c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6421
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: David Karoly <karolyd577@gmail.com>

kernel/arm: clean up arch-specific defines

* align fault syndrome and fault address register naming with
ARM Architecture Reference Manual (i.e. IFSR, DFSR, IFAR, DFAR)
* move PSR bitfield defines to arch_cpu_defs.h

Change-Id: I813045eec335ffbdd75270ad5a1afb2f222f73c8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5618
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

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: 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>

kernel: add generic wrapper for accessing user memory

This patch adds user_access() which can be used to gracefully handle
page faults that may happen when accessing user memory. It is used
by arch_cpu_user{memcpy, memset, strlcpy}() to allow using optimized
functions from the standard library.

Currently only x64 uses this, but nothing really is arch specific here.

Signed-off-by: Paweł Dziepak <pdziepak@quarnos.org>

ARM: fix arch_debug_call_with_fault_handler

This fixes the problem with KDL freaking out when doing a stacktrace
and having its fault handler triggered. Have no clue how this could
have worked before, but it did :P

ARM: user_memcpy/memset/strlcpy: fix my horrible ARM assembly

Turns out I was way to green (and tired) last year to code this properly...
now they finally work and the kernel is a lot more stable for it.

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: kernel: Fix compilation issue with new gas.

Turns out the new gas does not like spaces :(

ARM: kernel: Fix compilation issue with new gas.

Turns out the new gas does not like spaces :(

ARM: implement arch_cpu_user_memcpy/memset/strlcpy functions

Remove the dummies from the C code and implement them in assembly,
due to the label referencing issues with the fault handler.

This code is ripe for optimisation, my ARM assembly is pretty
basic ;)

Does work though, and gets us one step closer to a full arch.

ARM: Cleanup of port support code.

This also implements the fault handler correctly now, and cleans up the
exception handling. Seems a lot more stable now, no unexpected panics or
faults happening anymore.

ARM: fixup interrupt enable/disable/restore functions

[GSoC] [ARM] Patch by Johannes Wischert.
Fix arch_int_are_interrupts_enabled().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32414 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
- stubbed out many arch kernel functions (borrowed from other archs),
- partially implement ELF relocations code, enough to load the kernel,
- move uart.c to kernel sources and use the same one for the loader,
- default implementation for gensyscalls,
- assembler code functions for interrupt masking (enable/disable/restore/query).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32327 a95241bf-73f2-0310-859d-f6bbb57e9c96

kernel: add generic wrapper for accessing user memory

This patch adds user_access() which can be used to gracefully handle
page faults that may happen when accessing user memory. It is used
by arch_cpu_user{memcpy, memset, strlcpy}() to allow using optimized
functions from the standard library.

Currently only x64 uses this, but nothing really is arch specific here.

Signed-off-by: Paweł Dziepak <pdziepak@quarnos.org>

ARM: fix arch_debug_call_with_fault_handler

This fixes the problem with KDL freaking out when doing a stacktrace
and having its fault handler triggered. Have no clue how this could
have worked before, but it did :P

ARM: user_memcpy/memset/strlcpy: fix my horrible ARM assembly

Turns out I was way to green (and tired) last year to code this properly...
now they finally work and the kernel is a lot more stable for it.

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: kernel: Fix compilation issue with new gas.

Turns out the new gas does not like spaces :(

ARM: kernel: Fix compilation issue with new gas.

Turns out the new gas does not like spaces :(

ARM: implement arch_cpu_user_memcpy/memset/strlcpy functions

Remove the dummies from the C code and implement them in assembly,
due to the label referencing issues with the fault handler.

This code is ripe for optimisation, my ARM assembly is pretty
basic ;)

Does work though, and gets us one step closer to a full arch.

ARM: Cleanup of port support code.

This also implements the fault handler correctly now, and cleans up the
exception handling. Seems a lot more stable now, no unexpected panics or
faults happening anymore.

ARM: fixup interrupt enable/disable/restore functions

[GSoC] [ARM] Patch by Johannes Wischert.
Fix arch_int_are_interrupts_enabled().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32414 a95241bf-73f2-0310-859d-f6bbb57e9c96

[GSoC] [ARM] Patch by Johannes Wischert.
- stubbed out many arch kernel functions (borrowed from other archs),
- partially implement ELF relocations code, enough to load the kernel,
- move uart.c to kernel sources and use the same one for the loader,
- default implementation for gensyscalls,
- assembler code functions for interrupt masking (enable/disable/restore/query).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32327 a95241bf-73f2-0310-859d-f6bbb57e9c96