sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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

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

arm: Only include sysreg.h when needed in asm.h

We only need sysreg.h for armv6 barriers

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D41141

Retire broken GPROF support from the kernel

The option is not even recognized and with that patched it does not
compile. Even if it did work, it would be prohibitively expensive to
use.

Interested

Retire broken GPROF support from the kernel

The option is not even recognized and with that patched it does not
compile. Even if it did work, it would be prohibitively expensive to
use.

Interested parties can use pmcstat or dtrace instead.

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Remove Arm barriers for pre-armv6 CPUs

Remove the macros that define the Arm barriers on Armv5 and earlier. We
don't support these CPUs.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differ

Remove Arm barriers for pre-armv6 CPUs

Remove the macros that define the Arm barriers on Armv5 and earlier. We
don't support these CPUs.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33807

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Remove old arm CPU macros

The _ARM_ARCH_* and _HAVE_ARMv*_INSTRUCTIONS macros are FreeBSD
specific. Remove them as they are unused in the base system.

Reviewed by: imp
Sponsored by: The FreeBSD Fou

Remove old arm CPU macros

The _ARM_ARCH_* and _HAVE_ARMv*_INSTRUCTIONS macros are FreeBSD
specific. Remove them as they are unused in the base system.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33806

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

Also check if __ARM_ARCH_6KZ__ is defined when detecting when to use ARMv6
instructions. There is some code that still uses the _ARM_ARCH_* macros.

Sponsored by: DARPA, AFRL

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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Add the early hypervisor code needed on 32-bit ARMv7. This will be used
when we bring in bhyve support.

Submitted by: Mihai Carabas <mihai.carabas AT gmail.com>
Differential Revision: https://review

Add the early hypervisor code needed on 32-bit ARMv7. This will be used
when we bring in bhyve support.

Submitted by: Mihai Carabas <mihai.carabas AT gmail.com>
Differential Revision: https://reviews.freebsd.org/D10045

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Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't
have ACLE support built in. The ACLE (ARM C Language Extensions) defines
a set of standardized symbols which indicate the arch

Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't
have ACLE support built in. The ACLE (ARM C Language Extensions) defines
a set of standardized symbols which indicate the architecture version and
features available. ACLE support is built in to modern compilers (both
clang and gcc), but absent from gcc prior to 4.4.

ARM (the company) provides the acle-compat.h header file to define the
right symbols for older versions of gcc. Basically, acle-compat.h does
for arm about the same thing cdefs.h does for freebsd: defines
standardized macros that work no matter which compiler you use. If ARM
hadn't provided this file we would have ended up with a big #ifdef __arm__
section in cdefs.h with our own compatibility shims.

Remove #include <machine/acle-compat.h> from the zillion other places (an
ever-growing list) that it appears. Since style(9) requires sys/types.h
or sys/param.h early in the include list, and both of those lead to
including cdefs.h, only a couple special cases still need to include
acle-compat.h directly.

Loves it: imp

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Don't repeat the the word 'the'

(one manual change to fix grammar)

Confirmed With: db
Approved by: secteam (not really, but this is a comment typo fix)

ARM: Remove trailing whitespace from sys/arm/include
No functional changes.

Approved by: kib (mentor)

Add missing stack unwind information to several assembly functions on
ARMv6/7:

- Define _SAVE() macro to allow unwind data to be conditionally defined for
ARM assembly code in the kernel.

- Use _

Add missing stack unwind information to several assembly functions on
ARMv6/7:

- Define _SAVE() macro to allow unwind data to be conditionally defined for
ARM assembly code in the kernel.

- Use _SAVE() to provide unwind information for bcopy_page(), and two (of
many) instances of copyin() and copyout().

Reviewed by: andrew, imp
MFC after: 3 days
Sponsored by: University of Cambridge

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We only support the ARM EABI in head, remove the check on __ARM_EABI__.

Mark thumb entry points as such when building for thumb, otherwise mark
them as arm.

Use the Thumb compliant version of the add instruction. We can only use
"add Rd, Rn, Rm" from within an IT (if-then) block.

Fix alignment directives in arm asm code after clang 3.5 import.

The ancient gas we've been using interprets .align 0 as align to the
minimum required alignment for the current section. Clang's int

Fix alignment directives in arm asm code after clang 3.5 import.

The ancient gas we've been using interprets .align 0 as align to the
minimum required alignment for the current section. Clang's integrated
assembler interprets it as align to a byte boundary. Fortunately both
assemblers interpret a non-zero value as align to 2^N so just make sure
we have appropriate non-zero values everywhere.

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Define a WFI macro that expands to the right form of wait-for-interrupt
depending on the architecture.

Include acle-compat.h directly (we use its symbols) rather than getting
it via sysreg.h.

Add macros for asm barrier instructions with arch-specific implementations.

Create 'L' variants of all the ENTRY macros for file-static/local symbols.

If it seems like this is getting out of hand, I quite agree. I wonder if
it's safe, here in the 21st century, to lose the

Create 'L' variants of all the ENTRY macros for file-static/local symbols.

If it seems like this is getting out of hand, I quite agree. I wonder if
it's safe, here in the 21st century, to lose the distinction between C and
ASM symbols?

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Fix the GLOBAL macro so it works (upper vs lowercase X), use it in _EENTRY.

Stylish changes... put tabs where they need to be in macros, move lines
around so that related things are more grouped together, rewrite comments.

No functional changes, this is all so that the func

Stylish changes... put tabs where they need to be in macros, move lines
around so that related things are more grouped together, rewrite comments.

No functional changes, this is all so that the functional changes in the
next commit will stand out.

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Remove _PROF_PROLOGUE from the EENTRY() macros. These macros define
'extra' entry points which are nested within or provide a synonym name
for another function. It's most likely not safe to be mess

Remove _PROF_PROLOGUE from the EENTRY() macros. These macros define
'extra' entry points which are nested within or provide a synonym name
for another function. It's most likely not safe to be messing with the
IP and LR registers at anything other than the primary entry point to a
function. Anywhere beyond initial function entry, those registers may
be in use as scratch or variable registers.

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