powerpc: Implement fpu_kern_enter/fpu_kern_leave

Summary:
Provide an implementation of fpu_kern_enter/fpu_kern_leave for PPC to
enable FPU, VSX, and Altivec usage in-kernel. The functions currently

powerpc: Implement fpu_kern_enter/fpu_kern_leave

Summary:
Provide an implementation of fpu_kern_enter/fpu_kern_leave for PPC to
enable FPU, VSX, and Altivec usage in-kernel. The functions currently
only support FPU_KERN_NOCTX, but this is sufficient for ossl(1) and many
other users of the API.

This patchset has been tested on powerpc64le using a modified version of
the in-tree tools/tools/crypto/cryptocheck.c tool to check for FPU/Vec
register clobbering along with a follow-up patch to enable ossl(4) on
powerpc64*.

Reviewed by: jhibbits
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D41540

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Revert "powerpc: Implement fpu_kern_enter/fpu_kern_leave"

This reverts commit 6a47fa697ace42851b44498a53446b29b2593316.

Need to correct authorship.

powerpc: Implement fpu_kern_enter/fpu_kern_leave

Summary:
Provide an implementation of fpu_kern_enter/fpu_kern_leave for PPC to
enable FPU, VSX, and Altivec usage in-kernel. The functions currently

powerpc: Implement fpu_kern_enter/fpu_kern_leave

Summary:
Provide an implementation of fpu_kern_enter/fpu_kern_leave for PPC to
enable FPU, VSX, and Altivec usage in-kernel. The functions currently
only support FPU_KERN_NOCTX, but this is sufficient for ossl(1) and many
other users of the API.

This patchset has been tested on powerpc64le using a modified version of
the in-tree tools/tools/crypto/cryptocheck.c tool to check for FPU/Vec
register clobbering along with a follow-up patch to enable ossl(4) on
powerpc64*.

Reviewed by: jhibbits
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D41540

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

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

[POWERPC] Floating-Point Exception trap support

Add support for Floating-Point Exception traps on 32 and 64 bit platforms.
Also make sure to clean FPSCR on EXEC and thread exit

Author of initial ve

[POWERPC] Floating-Point Exception trap support

Add support for Floating-Point Exception traps on 32 and 64 bit platforms.
Also make sure to clean FPSCR on EXEC and thread exit

Author of initial version: Renato Riolino <renato.riolino@eldorad.org.br>

Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D23623

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Added ptrace support for reading/writing powerpc VSX registers

Summary:
Added ptrace support for getting/setting the remaining part of the VSX registers
(the part that's not already covered by FPR o

Added ptrace support for reading/writing powerpc VSX registers

Summary:
Added ptrace support for getting/setting the remaining part of the VSX registers
(the part that's not already covered by FPR or VR registers).

This is necessary to add support for VSX registers in debuggers.

Submitted by: Luis Pires
Differential Revision: https://reviews.freebsd.org/D15458

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Merge ^/head r325999 through r326131.

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Rename OEA to AIM. The former means nothing as it applies to all
processors (it's the PowerPC Operating Environment Architecture).
AIM designates the processors made by the Apple-IBM-Motorola
allianc

Rename OEA to AIM. The former means nothing as it applies to all
processors (it's the PowerPC Operating Environment Architecture).
AIM designates the processors made by the Apple-IBM-Motorola
alliance and those we typically support.

While here, remove the NetBSD option IPKDB. It's not an option
used by us. Also, PPC_HAVE_FPU is not used by us either. Remove
that too.

Obtained from: Juniper, Semihalf

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Not all cpus are MPC750s. Replace the MPC750 cpu option with OEA. This
stands for Operating Environment Architecture and is the specification that
all of the MPC6xx, MPC7xx, MPC7xxx and IBM7xx CPUs

Not all cpus are MPC750s. Replace the MPC750 cpu option with OEA. This
stands for Operating Environment Architecture and is the specification that
all of the MPC6xx, MPC7xx, MPC7xxx and IBM7xx CPUs adhere to.

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FPU support.

Obtained from: NetBSD (portions)

Bring in NetBSD code used in the PowerPC port.

Reviewed by: obrien, dfr
Obtained from: NetBSD

Rename OEA to AIM. The former means nothing as it applies to all
processors (it's the PowerPC Operating Environment Architecture).
AIM designates the processors made by the Apple-IBM-Motorola
allianc

Rename OEA to AIM. The former means nothing as it applies to all
processors (it's the PowerPC Operating Environment Architecture).
AIM designates the processors made by the Apple-IBM-Motorola
alliance and those we typically support.

While here, remove the NetBSD option IPKDB. It's not an option
used by us. Also, PPC_HAVE_FPU is not used by us either. Remove
that too.

Obtained from: Juniper, Semihalf

show more ...

Not all cpus are MPC750s. Replace the MPC750 cpu option with OEA. This
stands for Operating Environment Architecture and is the specification that
all of the MPC6xx, MPC7xx, MPC7xxx and IBM7xx CPUs

Not all cpus are MPC750s. Replace the MPC750 cpu option with OEA. This
stands for Operating Environment Architecture and is the specification that
all of the MPC6xx, MPC7xx, MPC7xxx and IBM7xx CPUs adhere to.

show more ...

FPU support.

Obtained from: NetBSD (portions)

Bring in NetBSD code used in the PowerPC port.

Reviewed by: obrien, dfr
Obtained from: NetBSD