libc/armv7: remove default version for alloca

The alloca() interface has been a macro expanding to __builtin_alloca()
since 2003 (commit 79806b4cdce0, included in FreeBSD 5.2). Even before
that vir

libc/armv7: remove default version for alloca

The alloca() interface has been a macro expanding to __builtin_alloca()
since 2003 (commit 79806b4cdce0, included in FreeBSD 5.2). Even before
that virtually every compiler version I was able to test replaced
alloca() with compiler generated code when targeting C.

Hide it to prevent future (mis)use.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D51858

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libc/arm: export __signalcontext not _signalcontext

The former exists and architectures other than aarch64 and riscv provide
it. The later does not exist.

Differential Revision: https://reviews.fr

libc/arm: export __signalcontext not _signalcontext

The former exists and architectures other than aarch64 and riscv provide
it. The later does not exist.

Differential Revision: https://reviews.freebsd.org/D44329

show more ...

lib{c,sys}: return wrapped syscall APIs to libc

These provide standard APIs, but are implemented using another system
call (e.g., pipe implemented in terms of pipe2) or are interposed by the
threadi

lib{c,sys}: return wrapped syscall APIs to libc

These provide standard APIs, but are implemented using another system
call (e.g., pipe implemented in terms of pipe2) or are interposed by the
threading library to support cancelation.

After discussion with kib (see D44111), I've concluded that it is
better to keep most public interfaces in libc with as little
as possible in libsys.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44241

show more ...

libc: move MD sys related symbols to libsys

This is a mix genuine MD interfaces and compat symbols like _getlogin.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src

libc: move MD sys related symbols to libsys

This is a mix genuine MD interfaces and compat symbols like _getlogin.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

show more ...

libc: centralize a few numeric symbols

fabs, __infinity, and __nan are universally implemented so declare them
in gen/Symbol.map.

We would also include __flt_rounds, but it's under FBSD_1.3 on arm

libc: centralize a few numeric symbols

fabs, __infinity, and __nan are universally implemented so declare them
in gen/Symbol.map.

We would also include __flt_rounds, but it's under FBSD_1.3 on arm so
until that's gone we're stuck with it. Likewise, everyone but i386
implements fp[gs]etmask.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42618

show more ...

libc: centralize makecontext symbols

Declare makecontext() and __makecontext() symbols centrally as they are
always implemented.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd

libc: centralize makecontext symbols

Declare makecontext() and __makecontext() symbols centrally as they are
always implemented.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42617

show more ...

libc: centralize {_,sig,}{set,long}jmp symbols

These symbols are universally exposed and documented so declare them
centrally. Double- and triple-underscore versions exist on some
platforms, but le

libc: centralize {_,sig,}{set,long}jmp symbols

These symbols are universally exposed and documented so declare them
centrally. Double- and triple-underscore versions exist on some
platforms, but leave those alone for now.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42616

show more ...

libc: centralize ntoh symbols

These are implemented by net/ntoh.c via headers and compiler intrinsics
so declare them in net/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https:/

libc: centralize ntoh symbols

These are implemented by net/ntoh.c via headers and compiler intrinsics
so declare them in net/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42615

show more ...

libc: further centralize syscall symbols

All architectures necessarily implement _exit(2) and vfork(2) so
declare them in sys/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https:

libc: further centralize syscall symbols

All architectures necessarily implement _exit(2) and vfork(2) so
declare them in sys/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42614

show more ...

libc: Remove empty comments in Symbol.map

These were left over from $FreeBSD$ removal.

Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D42612

Remove $FreeBSD$: one-line .h pattern

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

libc: Remove _get_tp() and _set_tp().

Their uses have been replaced by _tcb_get() and _tcb_set() from
<machine/tls.h>.

Reviewed by: kib, jrtc27
Sponsored by: The University of Cambridge, Google Inc

libc: Remove _get_tp() and _set_tp().

Their uses have been replaced by _tcb_get() and _tcb_set() from
<machine/tls.h>.

Reviewed by: kib, jrtc27
Sponsored by: The University of Cambridge, Google Inc.
Differential Revision: https://reviews.freebsd.org/D33354

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MFHead @r350386

Sponsored by: The FreeBSD Foundation

Add arm_sync_icache() and arm_drain_writebuf() sysarch syscall wrappers.

NetBSD and OpenBSD have libc wrapper functions for the ARM_SYNC_ICACHE and
ARM_DRAIN_WRITEBUF sysarch operations. This change

Add arm_sync_icache() and arm_drain_writebuf() sysarch syscall wrappers.

NetBSD and OpenBSD have libc wrapper functions for the ARM_SYNC_ICACHE and
ARM_DRAIN_WRITEBUF sysarch operations. This change adds compatible functions
to our library. This should make it easier for various upstream sources to
support *BSD operating systems with a single variation of cache maintence
code in tools like interpreters and JIT compilers.

I consider the argument types passed to arm_sync_icache() to be especially
unfortunate, but this is intended to match the other BSDs.

Differential Revision: https://reviews.freebsd.org/D20906

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Merge ^/head r340918 through r341763.

Remove MD __sys_* private symbols.

No references to any of these exist in the tree. The list was also
erratic with different architectures exporting different things
(arm64 and riscv exported none).

Remove MD __sys_* private symbols.

No references to any of these exist in the tree. The list was also
erratic with different architectures exporting different things
(arm64 and riscv exported none).

Reviewed by: kib
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D18425

show more ...

libc/arm: export __signalcontext not _signalcontext

The former exists and architectures other than aarch64 and riscv provide
it. The later does not exist.

Differential Revision: https://reviews.fr

libc/arm: export __signalcontext not _signalcontext

The former exists and architectures other than aarch64 and riscv provide
it. The later does not exist.

Differential Revision: https://reviews.freebsd.org/D44329

show more ...

lib{c,sys}: return wrapped syscall APIs to libc

These provide standard APIs, but are implemented using another system
call (e.g., pipe implemented in terms of pipe2) or are interposed by the
threadi

lib{c,sys}: return wrapped syscall APIs to libc

These provide standard APIs, but are implemented using another system
call (e.g., pipe implemented in terms of pipe2) or are interposed by the
threading library to support cancelation.

After discussion with kib (see D44111), I've concluded that it is
better to keep most public interfaces in libc with as little
as possible in libsys.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44241

show more ...

libc: move MD sys related symbols to libsys

This is a mix genuine MD interfaces and compat symbols like _getlogin.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src

libc: move MD sys related symbols to libsys

This is a mix genuine MD interfaces and compat symbols like _getlogin.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

show more ...

libc: centralize a few numeric symbols

fabs, __infinity, and __nan are universally implemented so declare them
in gen/Symbol.map.

We would also include __flt_rounds, but it's under FBSD_1.3 on arm

libc: centralize a few numeric symbols

fabs, __infinity, and __nan are universally implemented so declare them
in gen/Symbol.map.

We would also include __flt_rounds, but it's under FBSD_1.3 on arm so
until that's gone we're stuck with it. Likewise, everyone but i386
implements fp[gs]etmask.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42618

show more ...

libc: centralize makecontext symbols

Declare makecontext() and __makecontext() symbols centrally as they are
always implemented.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd

libc: centralize makecontext symbols

Declare makecontext() and __makecontext() symbols centrally as they are
always implemented.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42617

show more ...

libc: centralize {_,sig,}{set,long}jmp symbols

These symbols are universally exposed and documented so declare them
centrally. Double- and triple-underscore versions exist on some
platforms, but le

libc: centralize {_,sig,}{set,long}jmp symbols

These symbols are universally exposed and documented so declare them
centrally. Double- and triple-underscore versions exist on some
platforms, but leave those alone for now.

Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42616

show more ...

libc: centralize ntoh symbols

These are implemented by net/ntoh.c via headers and compiler intrinsics
so declare them in net/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https:/

libc: centralize ntoh symbols

These are implemented by net/ntoh.c via headers and compiler intrinsics
so declare them in net/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42615

show more ...

libc: further centralize syscall symbols

All architectures necessarily implement _exit(2) and vfork(2) so
declare them in sys/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https:

libc: further centralize syscall symbols

All architectures necessarily implement _exit(2) and vfork(2) so
declare them in sys/Symbol.map.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42614

show more ...

libc: Remove empty comments in Symbol.map

These were left over from $FreeBSD$ removal.

Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D42612