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

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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[PowerPC64LE] Adjust ELF definitions for LE.

Set ELF_TARG_DATA correctly on PowerPC64LE.

Sponsored by: Tag1 Consulting, Inc.

Fix the powerpc copyout fixup from r356113

Summary:
r356113 used an older patch, which predated the
freebsd_copyout_auxargs() addition. Fix this by using a private
powerpc_copyout_auxargs() instead

Fix the powerpc copyout fixup from r356113

Summary:
r356113 used an older patch, which predated the
freebsd_copyout_auxargs() addition. Fix this by using a private
powerpc_copyout_auxargs() instead, and keep it private to powerpc, not in MI
files.

Reviewed by: kib, bdragon
Differential Revision: https://reviews.freebsd.org/D22935

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Merge ^/head r339015 through r339669.

Consolidate identical ELF auxargs type defintions.

All platforms except powerpc use the same values and powerpc shares a
majority of them.

Go ahead and declare AT_NOTELF, AT_UID, and AT_EUID in fav

Consolidate identical ELF auxargs type defintions.

All platforms except powerpc use the same values and powerpc shares a
majority of them.

Go ahead and declare AT_NOTELF, AT_UID, and AT_EUID in favor of the
unused AT_DCACHEBSIZE, AT_ICACHEBSIZE, and AT_UCACHEBSIZE for powerpc.

Reviewed by: jhb, imp
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17397

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Unbreak 32-bit binaries on powerpc64

Recently a change was made which broke loading 32-bit binaries on powerpc64,
with an assertion in ld-elf32.so.1:

ld-elf32.so.1: assert failed:
/usr/local/poudri

Unbreak 32-bit binaries on powerpc64

Recently a change was made which broke loading 32-bit binaries on powerpc64,
with an assertion in ld-elf32.so.1:

ld-elf32.so.1: assert failed:
/usr/local/poudriere/jails/ppc64/usr/src/libexec/rtld-elf/rtld.c:390

It turns out Elf32_AuxInfo was broken for a very long time on powerpc64, as
it uses long and pointers, which are both 64 bits on powerpc64, and only
manifested with the recent work on auxargs.

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sys/powerpc: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - e

sys/powerpc: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

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.

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Merge ^/head r323559 through r325504.

MFhead@r324837

While here, diff reduce some of the changes in sys/boot by moving
MK_COVERAGE=no to sys/boot/Makefile.inc .

Add AT_HWCAP2 ELF auxiliary vector.
- allocate value for new AT_HWCAP2 auxiliary vector on all platforms.
- expand 'struct sysentvec' by new 'u_long *sv_hwcap2', in exactly
same way as for AT_HW

Add AT_HWCAP2 ELF auxiliary vector.
- allocate value for new AT_HWCAP2 auxiliary vector on all platforms.
- expand 'struct sysentvec' by new 'u_long *sv_hwcap2', in exactly
same way as for AT_HWCAP.

MFC after: 1 month
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D12699

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MFhead@r323635

Add AT_HWCAP and AT_EHDRFLAGS on all platforms.

A new 'u_long *sv_hwcap' field is added to 'struct sysentvec'. A
process ABI can set this field to point to a value holding a mask of
architecture-sp

Add AT_HWCAP and AT_EHDRFLAGS on all platforms.

A new 'u_long *sv_hwcap' field is added to 'struct sysentvec'. A
process ABI can set this field to point to a value holding a mask of
architecture-specific CPU feature flags. If an ABI does not wish to
supply AT_HWCAP to processes the field can be left as NULL.

The support code for AT_EHDRFLAGS was already present on all systems,
just the #define was not present. This is a step towards unifying the
AT_* constants across platforms.

Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D12290

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Sync from head

Merge head r236710 through r238467.

IFC @238412.

IFC @ r238370

Reserve AT_TIMEKEEP auxv entry for providing usermode the pointer to
timekeeping information.

MFC after: 1 week

Merge svn+ssh://svn.freebsd.org/base/head@218816

Add AT_STACKPROT elf aux vector. Will be used to inform rtld about the
initial stack protection set by the kernel image activator.

Merge svn+ssh://svn.freebsd.org/base/head@214309

Supply some useful information to the started image using ELF aux vectors.
In particular, provide pagesize and pagesizes array, the canary value
for SSP use, number of host CPUs and osreldate.

Teste

Supply some useful information to the started image using ELF aux vectors.
In particular, provide pagesize and pagesizes array, the canary value
for SSP use, number of host CPUs and osreldate.

Tested by: marius (sparc64)
MFC after: 1 month

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Merge svn+ssh://svn.freebsd.org/base/head@211344

MFppc64:

Provide ELF definitions for 64-bit PowerPC. This unbreaks the powerpc
loader build.

IFH@204581