kernel/arch: Make arch_debug_get_caller() a macro implemented by a builtin.

Only the x86 and PPC implementations look like they would have worked,
while the builtin is available and will work across all architectures.
We already use it unconditionally in some parts of libroot.

Change-Id: I2dffb3b2c7cdd605092382b9d649151adb921bb4
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6942
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Remove trigraphs

Fixes arm64 build

Change-Id: I8e266871df8f124539a4b5d6fb267931e6506dd5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6769
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

kernel/arm64: implement iframe stack and unwinding

Change-Id: I1587c1f57bd73777a188bb8f1bc58263de82fcb9
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5684
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: David Karoly <karolyd577@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/arm64: implement stack trace

Change-Id: If5627fb4d37bdb7260d7e14c0c3e8cf7bcbee53d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5672
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: David Karoly <karolyd577@gmail.com>

arm64: Add stubs so kernel can at least link

Signed-off-by: Jaroslaw Pelczar <jarek@jpelczar.com>
Change-Id: I2476a6346c912c4aa0c26e4f3720ea2c2690b669
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1857
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>