arm64: Save/restore FPU state when handling IRQ or syscall

Change-Id: I8b2a36d57f410c0d06ca5ce90d1b997494072c94
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7510
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/int: consolidate interrupt vector number to `int32`

This is no-op for 32 bit platforms because `int32` is defined as `long` there.

Change interrupt vector number from 64 bits to 32 bits for 64 bit platforms.

Change-Id: I52d1ad616cab16488804e9733c7afaf772a670ba
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7507
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>

kernel/arm64: align interrupt postlude with other architectures

Change-Id: I0a5325f163d2ca99bfdaa35d7addedcfdc16ff9a
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6178
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

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/arm: reserve interrupts for GICv2

This works similarly on the 32-bit and 64-bit ARM port.

Other architectures call reserve_io_interrupt_vectors() when
initializing the interrupt controller (e.g. PIC, APIC etc.)
so let's do the same on ARM.

Change-Id: If5a360cf23fd01d97d2f20702785bc5da0190052
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5566
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

kernel/arm64: reuse existing GICv2 driver

Change-Id: I68d6978d1f4c3bf8d5d53674f794948a9771729b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5276
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

arm: move SPI interrupt offset calculation to FDT code

Most common values for interrupt-cells are 1 or 2.
- one cell: the single cell defines the index of the interrupt
within the controller.
- two cells: the first cell defines the index of the interrupt
within the controller, while the second cell is specifies
interrupt flags like active-high/active-low, edge triggered
or level-sensitive.

ARM Generic Interrupt Controller uses 3 cells:
- the 1st cell is the interrupt type: 0 for SPI, 1 for PPI
- the 2nd cell contains the interrupt number
- the 3rd cell contains interrupt flags, similarly to the 2-cell format

SPI interrupts are numbered from 0 in the device tree but
they start from 32 on the GIC so an offset should be applied.

On the other hand, ACPI tables contain interrupt numbers
as they are expected by the GIC so no offset should be applied
when interrupts are read from ACPI.

see:
https://www.kernel.org/doc/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
https://www.kernel.org/doc/Documentation/devicetree/bindings/interrupt-controller/arm%2Cgic.txt
https://developer.arm.com/documentation/198123/0301/Arm-CoreLink-GIC-fundamentals

Change-Id: Ia41371bd965347f89c17d62e391480d7b2083bae
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5490
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

kernel/arm64/int: add missing header

Change-Id: I776271bb117f854783a6ae6bcdba591eafb27fa5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5481
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

arm64: Add exception handling, handle pagetables access and dirty flags.

Change-Id: I751d78eb458da16098d236f3829d0c26540fbc17
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5264
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

kernel/int: Allow arch_int_assign_to_cpu to make its own decisions.

For now this is used on RISCV64 to indicate that interrupts will always
be on CPU 0. However, in the future, some architectures may want
or require interrupts to be "steered" in various ways, and this
also paves the way for that.

Change-Id: Iec79870cf5c4898d102d0e624de19602271ae772
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4721
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

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>