linux(4): Fix leftovers after 2ff63af9

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

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

linux(4): Make ptrace_pokeusr machine dependent

Differential Revision: https://reviews.freebsd.org/D40096
MFC after: 1 week

linux(4): Make ptrace_peekusr machine dependend

And partially implement it for x86_64.

Differential Revision: https://reviews.freebsd.org/D40095
MFC after: 1 week

linux(4): Move dev_t type declaration under /compat/linux

As of version 2.6.0 of the Linux kernel, dev_t is a 32-bit unsigned integer
on all platforms. Move it into the MI linux.h under /compat/linu

linux(4): Move dev_t type declaration under /compat/linux

As of version 2.6.0 of the Linux kernel, dev_t is a 32-bit unsigned integer
on all platforms. Move it into the MI linux.h under /compat/linux.

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linux(4): Make struct newstat to match actual Linux one

In the struct stat the st_dev, st_rdev are unsigned long.

linux(4): Fix LINUX_AT_COUNT comments

Differential Revision: https://reviews.freebsd.org/D39645
MFC after: 1 month

linux(4): Reduce code duplication between MD files

Move struct ifnet definitions under compat/linux.

Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D38791

linux(4): Deduplicate MI futex structures.

MFC after: 1 week

linux(4): To reuse MD linux.h hide kernel dependencies unde _KERNEL constraint

MFC after: 2 weeks

linux(4): Reduce duplication between MD parts of the Linuxulator

Move sigprocmask actions defines under compat/linux,
they are identical across all Linux architectures.

MFC after: 2 weeks

linux(4): Add AT_MINSIGSTKSZ to arm64 port

MFC after: 2 weeks

linux(4): Implement signal trampoline for arm64 in a FreeBSD-way

The implemenation differs from others Linuxulators.
For unwinders Linux ucontext_t is stored, however native machine context
is used

linux(4): Implement signal trampoline for arm64 in a FreeBSD-way

The implemenation differs from others Linuxulators.
For unwinders Linux ucontext_t is stored, however native machine context
is used to store/restore process state to avoid code duplication.

As DWARF Aarch64 does not define a register number for PC and provides no
direct way to encode the PC of the previous frame, CFI cannot describe a
signal trampoline frame. So, modified the vdso linker script to discard
unused sections.

Extensions are not implemented.

MFC after: 2 weeks

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linux(4): Rework the definition of struct siginfo to match Linux actual one

Rework the defintion of struct siginfo so that the array padding
struct siginfo to SI_MAX_SIZE can be placed in a union al

linux(4): Rework the definition of struct siginfo to match Linux actual one

Rework the defintion of struct siginfo so that the array padding
struct siginfo to SI_MAX_SIZE can be placed in a union along side of the
rest of the struct siginfo members. The result is that we no longer need
the __ARCH_SI_PREAMBLE_SIZE or SI_PAD_SIZE definitions.

Move struct siginfo definition under /compat/linux to reduce MD part.
To avoid headers polution include linux_siginfo.h in the MD linux.h

MFC after: 2 weeks

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linux(4): Move sigframe definitions to separate headers

The signal trampoine-related definitions are used only in the MD part
of code, wherefore moved from everywhere used linux.h to separate MD
hea

linux(4): Move sigframe definitions to separate headers

The signal trampoine-related definitions are used only in the MD part
of code, wherefore moved from everywhere used linux.h to separate MD
headers.

MFC after: 2 weeks

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linux: Replace ifdefs in ptrace with per-architecture callbacks

It's a cleanup; no (intended) functional changes.

Sponsored By: EPSRC
Reviewed By: kib
Differential Revision: https://reviews.freebsd

linux: Replace ifdefs in ptrace with per-architecture callbacks

It's a cleanup; no (intended) functional changes.

Sponsored By: EPSRC
Reviewed By: kib
Differential Revision: https://reviews.freebsd.org/D32888

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linux: Implement linux_to_bsd_regset() on arm64

This will be used by ptrace.

Sponsored By: EPSRC

linux: Constify bsd_to_linux_regset()

No functional changes.

Reviewed By: emaste
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D32599

linux(4): Plug in aarch64 fcntl flags.

Fixes opendir() libc function.

Differential Revision: https://reviews.freebsd.org/D31357
MFC after: 2 weeks

linux: implement signal delivery on arm64

Note that this still uses FreeBSD-style sigframe;
this will be addressed later.

Reviewed By: dchagin
Sponsored By: EPSRC
Differential Revision: https://rev

linux: implement signal delivery on arm64

Note that this still uses FreeBSD-style sigframe;
this will be addressed later.

Reviewed By: dchagin
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D31258

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Drop "All rights reserved" from my copyright statements.

Add email and fixup years while here.

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D30912
MFC after: 2 weeks

linux(4): implement coredumps on arm64

Previously they only worked on amd64.

Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30975

linux(4); Retire unnecessary __packed attribute from some struct's
definition.

Differential Revision: https://reviews.freebsd.org/D30482
MFC after: 2 weeks

arm64: fix struct l_sigaction_t layout

The definition was copied from amd64, but the layout of the struct
differs slightly between these platforms. This fixes spurious
`unsupported sigaction flag 0x

arm64: fix struct l_sigaction_t layout

The definition was copied from amd64, but the layout of the struct
differs slightly between these platforms. This fixes spurious
`unsupported sigaction flag 0xXXXXXXXX` messages when executing some
Linux binaries on arm64.

Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27460

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Add proper types for linux message queue syscalls; mostly taken
from 32-bit Linuxulator.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D2

Add proper types for linux message queue syscalls; mostly taken
from 32-bit Linuxulator.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25386

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