arm64: Add the SVE registers to the signal frame

Use the new extended register support in the arm64 signal frame to
handle the SVE registers.

As these registers alias the VFP registers we use the f

arm64: Add the SVE registers to the signal frame

Use the new extended register support in the arm64 signal frame to
handle the SVE registers.

As these registers alias the VFP registers we use the floating point
register values to restore the lower bits of the SVE registers. This
is to support software that doesn't understand SVE to continue working.

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D43307

show more ...

arm64: Support passing more registers to signals

To support recent extensions to the Arm architecture we may need to
store more or larger registers when sending a signal.

To support this create a l

arm64: Support passing more registers to signals

To support recent extensions to the Arm architecture we may need to
store more or larger registers when sending a signal.

To support this create a list of these extra registers. Userspace that
needs to access a register in the signal handler can then walk the list
to find the correct register struct and read/write its contents.

Reviewed by: kib, markj (earlier version)
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D43302

show more ...

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

arm64 lib32: prepare arm64 headers to redirect to arm

In order to compile lib32 libraries and other 32-bit code on arm64,
<machine/foo.h> needs to be redirected to an arm header rather
than arm64 wh

arm64 lib32: prepare arm64 headers to redirect to arm

In order to compile lib32 libraries and other 32-bit code on arm64,
<machine/foo.h> needs to be redirected to an arm header rather
than arm64 when building with -m32. Ifdef the arm64 headers that
are installed in /usr/include/machine and used by user-level software
(including references from /usr/include/*.h) so that if __arm__ is
defined when including the arm64 version, <arm/foo.h> is included
rather than using the rest of the file's contents. Some arm headers
had no arm64 equivalent; headers were added just to do the redirection.
These files use #error if __arm__ is not defined to guard against
confusion. Also add an include/arm Makefile, and modify Makefiles
as needed to install everything, including the arm files in
/usr/include/arm. fenv.h comes from lib/msun/arm/fenv.h.

The new arm64 headers are:
acle-compat.h
cpuinfo.h
sysreg.h

Reviewed by: jrtc27, imp
Differential Revision: https://reviews.freebsd.org/D40944

show more ...

arm64: extend ESR/SPSR registers to 64b

For the Exception Syndrome Register, ESR_ELx, the upper 32b were
previously unused, but now may contain additional exception info as of
Armv8.7 (FEAT_LS64).

arm64: extend ESR/SPSR registers to 64b

For the Exception Syndrome Register, ESR_ELx, the upper 32b were
previously unused, but now may contain additional exception info as of
Armv8.7 (FEAT_LS64).

Extend ESR from u32->u64 in exception handling code to support this. In
addition, also extend Saved Program Status Register SPSR_ELx in the same
way to allow for future extensions.

Reviewed by: andrew
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D38983

show more ...

arm64: clean up empty lines in .c and .h files

Impleent COMPAT_FREEBSD32 for arm64.
This is based on early work by andrew@.

arm64: Add the SVE registers to the signal frame

Use the new extended register support in the arm64 signal frame to
handle the SVE registers.

As these registers alias the VFP registers we use the f

arm64: Add the SVE registers to the signal frame

Use the new extended register support in the arm64 signal frame to
handle the SVE registers.

As these registers alias the VFP registers we use the floating point
register values to restore the lower bits of the SVE registers. This
is to support software that doesn't understand SVE to continue working.

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D43307

show more ...

arm64: Support passing more registers to signals

To support recent extensions to the Arm architecture we may need to
store more or larger registers when sending a signal.

To support this create a l

arm64: Support passing more registers to signals

To support recent extensions to the Arm architecture we may need to
store more or larger registers when sending a signal.

To support this create a list of these extra registers. Userspace that
needs to access a register in the signal handler can then walk the list
to find the correct register struct and read/write its contents.

Reviewed by: kib, markj (earlier version)
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D43302

show more ...

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

arm64 lib32: prepare arm64 headers to redirect to arm

In order to compile lib32 libraries and other 32-bit code on arm64,
<machine/foo.h> needs to be redirected to an arm header rather
than arm64 wh

arm64 lib32: prepare arm64 headers to redirect to arm

In order to compile lib32 libraries and other 32-bit code on arm64,
<machine/foo.h> needs to be redirected to an arm header rather
than arm64 when building with -m32. Ifdef the arm64 headers that
are installed in /usr/include/machine and used by user-level software
(including references from /usr/include/*.h) so that if __arm__ is
defined when including the arm64 version, <arm/foo.h> is included
rather than using the rest of the file's contents. Some arm headers
had no arm64 equivalent; headers were added just to do the redirection.
These files use #error if __arm__ is not defined to guard against
confusion. Also add an include/arm Makefile, and modify Makefiles
as needed to install everything, including the arm files in
/usr/include/arm. fenv.h comes from lib/msun/arm/fenv.h.

The new arm64 headers are:
acle-compat.h
cpuinfo.h
sysreg.h

Reviewed by: jrtc27, imp
Differential Revision: https://reviews.freebsd.org/D40944

show more ...

arm64: extend ESR/SPSR registers to 64b

For the Exception Syndrome Register, ESR_ELx, the upper 32b were
previously unused, but now may contain additional exception info as of
Armv8.7 (FEAT_LS64).

arm64: extend ESR/SPSR registers to 64b

For the Exception Syndrome Register, ESR_ELx, the upper 32b were
previously unused, but now may contain additional exception info as of
Armv8.7 (FEAT_LS64).

Extend ESR from u32->u64 in exception handling code to support this. In
addition, also extend Saved Program Status Register SPSR_ELx in the same
way to allow for future extensions.

Reviewed by: andrew
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D38983

show more ...

arm64: clean up empty lines in .c and .h files

Impleent COMPAT_FREEBSD32 for arm64.
This is based on early work by andrew@.

Merge from head

Catch up with head, primarily for the 1.14.4.0 firmware.

Merge ^/head r285284 through r285340.

Clean up the types used in <machine/ucontext.h> on arm64. As some ports
include this file without first including the headers needed for uint32_t
and the like use the __foo type.

Obtained from: ABT

Clean up the types used in <machine/ucontext.h> on arm64. As some ports
include this file without first including the headers needed for uint32_t
and the like use the __foo type.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation

show more ...

Catch up with HEAD (r280229-r284686).

Merge sync of head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

Merge from HEAD

Add space for future expansion [1]. While here clean up a little, spsr is
only 32-bits, and mark the holes in the struct with a pad member.

Suggested by: kib [1]
Sponsored by: The FreeBSD Foundation

MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Add the start of the arm64 machine headers. This is the subset needed to
start getting userland libraries building.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation