libthr/amd64: do not set THR_C_RUNTIME for thr_new() if the main thread did used AMD64_SET_TLSBASE

It is up to the code that organizes the runtime to properly set the
signal handler, and to set %fsb

libthr/amd64: do not set THR_C_RUNTIME for thr_new() if the main thread did used AMD64_SET_TLSBASE

It is up to the code that organizes the runtime to properly set the
signal handler, and to set %fsbase if libthr signal handler is to be
called. The change should leave the CPU state on the signal handler
entry identical to what it was before introduction of TLSBASE, for code
that provides its own startup and thread pointer, but still calls into
libthr as a hack.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

show more ...

C runtime: add kernel version guards on exterrctl

This allows userspace to run on a (somewhat) out of date kernel.

Avoid a __FreeBSD_version bump and use the bump from a02180cf60a6 which
has occure

C runtime: add kernel version guards on exterrctl

This allows userspace to run on a (somewhat) out of date kernel.

Avoid a __FreeBSD_version bump and use the bump from a02180cf60a6 which
has occured since exterrctl was added.

Reviewed by: kevans
Fixes: b9c8a07d4dd9 ("C runtime: enable extended error reporting from kernel")
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D50687

show more ...

C runtime: enable extended error reporting from kernel

Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D50483

thr_new: add a flag indicating that the thread is created by C runtime

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

pthread_create(): style

Use NULL instead of 0 for null pointer.
Use != 0 for non-bool, as in the rest of the function.
Remove unneeded ().

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

libthr: remove explicit sys/cdefs.h includes

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

show more ...

Merge ^/head r357662 through r357854.

Use sigfastblock(2) for masking signals in libthr.

Ensure proper handshake to transfer sigfastblock(2) blocking word
ownership from rtld to libthr.

Unfortunately sigfastblock(2) is not enough to st

Use sigfastblock(2) for masking signals in libthr.

Ensure proper handshake to transfer sigfastblock(2) blocking word
ownership from rtld to libthr.

Unfortunately sigfastblock(2) is not enough to stop intercepting
signals in libthr, because critical sections must ensure more than
just signal blocking.

Tested by: pho
Disscussed with: cem, emaste, jilles
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D12773

show more ...

Merge ^/head r340918 through r341763.

_thr_setthreaded() cannot fail; change return type to void

Also remove logic to avoid unnecessary stores to the global variable.
Thread creation and destruction are heavy enough that any supposed sa

_thr_setthreaded() cannot fail; change return type to void

Also remove logic to avoid unnecessary stores to the global variable.
Thread creation and destruction are heavy enough that any supposed savings
is in the noise.

MFC after: 2 weeks
Sponsored by: Dell EMC Isilon

show more ...

Merge ^/head r337646 through r338014.

libthr/amd64: do not set THR_C_RUNTIME for thr_new() if the main thread did used AMD64_SET_TLSBASE

It is up to the code that organizes the runtime to properly set the
signal handler, and to set %fsb

libthr/amd64: do not set THR_C_RUNTIME for thr_new() if the main thread did used AMD64_SET_TLSBASE

It is up to the code that organizes the runtime to properly set the
signal handler, and to set %fsbase if libthr signal handler is to be
called. The change should leave the CPU state on the signal handler
entry identical to what it was before introduction of TLSBASE, for code
that provides its own startup and thread pointer, but still calls into
libthr as a hack.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

show more ...

C runtime: add kernel version guards on exterrctl

This allows userspace to run on a (somewhat) out of date kernel.

Avoid a __FreeBSD_version bump and use the bump from a02180cf60a6 which
has occure

C runtime: add kernel version guards on exterrctl

This allows userspace to run on a (somewhat) out of date kernel.

Avoid a __FreeBSD_version bump and use the bump from a02180cf60a6 which
has occured since exterrctl was added.

Reviewed by: kevans
Fixes: b9c8a07d4dd9 ("C runtime: enable extended error reporting from kernel")
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D50687

show more ...

C runtime: enable extended error reporting from kernel

Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D50483

thr_new: add a flag indicating that the thread is created by C runtime

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

pthread_create(): style

Use NULL instead of 0 for null pointer.
Use != 0 for non-bool, as in the rest of the function.
Remove unneeded ().

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

libthr: remove explicit sys/cdefs.h includes

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\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

show more ...

Merge ^/head r357662 through r357854.

Use sigfastblock(2) for masking signals in libthr.

Ensure proper handshake to transfer sigfastblock(2) blocking word
ownership from rtld to libthr.

Unfortunately sigfastblock(2) is not enough to st

Use sigfastblock(2) for masking signals in libthr.

Ensure proper handshake to transfer sigfastblock(2) blocking word
ownership from rtld to libthr.

Unfortunately sigfastblock(2) is not enough to stop intercepting
signals in libthr, because critical sections must ensure more than
just signal blocking.

Tested by: pho
Disscussed with: cem, emaste, jilles
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D12773

show more ...

Merge ^/head r340918 through r341763.

_thr_setthreaded() cannot fail; change return type to void

Also remove logic to avoid unnecessary stores to the global variable.
Thread creation and destruction are heavy enough that any supposed sa

_thr_setthreaded() cannot fail; change return type to void

Also remove logic to avoid unnecessary stores to the global variable.
Thread creation and destruction are heavy enough that any supposed savings
is in the noise.

MFC after: 2 weeks
Sponsored by: Dell EMC Isilon

show more ...