sys/_types.h: avoid use of __has_feature()

Only fairly recent GCC versions support and sys/_types.h must work with
quite old compilers and without sys/cdef.h being included. The prior
workaround wo

sys/_types.h: avoid use of __has_feature()

Only fairly recent GCC versions support and sys/_types.h must work with
quite old compilers and without sys/cdef.h being included. The prior
workaround works fine, but we can have the same effect with compiler
macro definitions. In this specific case, compilers that define the
__intcap_t builtin type will define __SIZEOF_INTCAP__.

This reverts commit 029a09f18032353a9ae874590b879322efc6e53a
This reverts commit 19728f31ae421f40e2b0b0c775f4eedd7f927be0

Reviewed by: imp, des, kib, emaste
Effort: CHERI upstreaming
Fixes: 85ab981a8e4e ("sys/_types.h: define fallback __(u)intcap_t")
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D54009

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sys/_types.h: recognise char8_t as a builtin type in C++20

Unlike in C23 where it's a typedef, char8_t is a built in type in
C++20. Recognise it as such.

PR: 291449
Reported by: Tomoaki AOKI <jun

sys/_types.h: recognise char8_t as a builtin type in C++20

Unlike in C23 where it's a typedef, char8_t is a built in type in
C++20. Recognise it as such.

PR: 291449
Reported by: Tomoaki AOKI <junchoon@dec.sakura.ne.jp>
Approved by: markj (mentor)
Reviewed by: imp
Fixes: f0e541118c374869a8226eaa1320bb6eda248a20
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D54124

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sys/_types.h: Actually unbreak gcc build

Fixes: 19728f31ae42 ("sys/_types.h: Unbreak gcc build")
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D53986

sys/_types.h: Unbreak gcc build

We can't assume that <sys/cdefs.h> is in scope.

Fixes: 85ab981a8e4e ("sys/_types.h: define fallback __(u)intcap_t")
Reviewed by: olce, imp, emaste
Differential Revi

sys/_types.h: Unbreak gcc build

We can't assume that <sys/cdefs.h> is in scope.

Fixes: 85ab981a8e4e ("sys/_types.h: define fallback __(u)intcap_t")
Reviewed by: olce, imp, emaste
Differential Revision: https://reviews.freebsd.org/D53980

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add types: (u)int64ptr_t

This type represents an integer value of at least 64 bits which is
capable of being cast to and from pointer types. It is intended to
replace various spellings of (u)int64_

add types: (u)int64ptr_t

This type represents an integer value of at least 64 bits which is
capable of being cast to and from pointer types. It is intended to
replace various spellings of (u)int64_t there the value is expected to
hold a pointer. This is common in Linux code to allow 32-bit and 64-bit
structures to be the same and used other places including OpenZFS. With
the introduction of CHERI this no longer works, but we need to preserve
the ABI for integer pointer targets. Rather than adding ifdefs in every
case, we introduce a new type.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53823

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sys/_types.h: add __intptr_t to __mbstate_t

Extend __mbstate_t to include an intptr_t to ensure it can hold a
pointer if required.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: I

sys/_types.h: add __intptr_t to __mbstate_t

Extend __mbstate_t to include an intptr_t to ensure it can hold a
pointer if required.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53822

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sys/_types.h: add void * to __max_align_t

Add a pointer member to __max_align_t as pointers may have different
alignment requirements than long long or long double.

Reviewed by: kib
Effort: CHERI

sys/_types.h: add void * to __max_align_t

Add a pointer member to __max_align_t as pointers may have different
alignment requirements than long long or long double.

Reviewed by: kib
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53821

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sys/_types.h: define fallback __(u)intcap_t

__intcap_t and __uintcap_t are new primative types in CHERI-aware ABIs
that are used to define (u)intptr_t. To allow coexistance of integer
pointers and

sys/_types.h: define fallback __(u)intcap_t

__intcap_t and __uintcap_t are new primative types in CHERI-aware ABIs
that are used to define (u)intptr_t. To allow coexistance of integer
pointers and hybrid code, define them to __(u)intptr_t when they are
not otherwise available.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53820

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sys/_types.h: define __(u)int(f)ptr_t for CHERI

On pure-capability ABIs, uintptr_t and variants are capabilities and
defined to the new primative type __uintcap_t and variants. This is
required to

sys/_types.h: define __(u)int(f)ptr_t for CHERI

On pure-capability ABIs, uintptr_t and variants are capabilities and
defined to the new primative type __uintcap_t and variants. This is
required to allow pointers (capabilities) to round trip through
uintptr_t as required by the C standard.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53819

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sys/_types.h: centralize __vm_offset_t and __vm_size_t definitions

Use __ptraddr_t to define __vm_offset_t and __size_t for __vm_size_t
rather than per-pointer-size definitions.

Reviewed by: kib, m

sys/_types.h: centralize __vm_offset_t and __vm_size_t definitions

Use __ptraddr_t to define __vm_offset_t and __size_t for __vm_size_t
rather than per-pointer-size definitions.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53818

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new type: ptraddr_t

ptraddr_t is an unsigned integer type that can hold the address of any
pointer. It differes from uintptr_t in that it does not carry
provenance which is useful for CHERI in that

new type: ptraddr_t

ptraddr_t is an unsigned integer type that can hold the address of any
pointer. It differes from uintptr_t in that it does not carry
provenance which is useful for CHERI in that it can disambigurate the
provenance of uintptr_t expressions. It differes from size_t in that
some segmented architecture (not supported by FreeBSD) may have a size_t
that does not hold an address.

ptraddr_t is not yet standardized, but is currently proposed for
inclusion in C++2Y.

Prefer the compiler defined __PTRADDR_TYPE__ defintion where available
as this a new type and we don't need to worry about historical values.
Fall back to __size_t where unavailable.

Reviewed by: kib, markj
Effort: CHERI upstreaming
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D53817

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max_align_t: apply alignof to 'long double' for long double alignment

Reviewed by; markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D53

max_align_t: apply alignof to 'long double' for long double alignment

Reviewed by; markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D53826

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sys/_types.h: drop sys/cdefs.h include

We no longer use it and it pollutes downstream headers.

Reviewed by: imp
Exp-run by: antoine (PR 286274)
Pull Request: https://github.com/freebsd/freebsd-src/

sys/_types.h: drop sys/cdefs.h include

We no longer use it and it pollutes downstream headers.

Reviewed by: imp
Exp-run by: antoine (PR 286274)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1595

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sys/_types.h: use builtins to for __max_align_t

Use __attribute__((__aligned__(x))) and __alignof__(x) in places of local
macros that ultimately wrap these. We don't support compilers that don't
de

sys/_types.h: use builtins to for __max_align_t

Use __attribute__((__aligned__(x))) and __alignof__(x) in places of local
macros that ultimately wrap these. We don't support compilers that don't
define these so there's little loss of generality.

This mirrors Clang's stddef.h.

Reviewed by: imp
Exp-run by: antoine (PR 286274)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1595

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sys/acl.h: move main typedefs to sys/_types.h

Make __ prefixed versions available without the pollution of sys/acl.h
(and by extension sys/param.h).

Reviewed by: kib
Differential Revision: https://

sys/acl.h: move main typedefs to sys/_types.h

Make __ prefixed versions available without the pollution of sys/acl.h
(and by extension sys/param.h).

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44382

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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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Remove checks for __GNUCLIKE macros for varargs.

All supported compilers (modern versions of GCC and clang) support
these.

PR: 263102 (exp-run)
Reviewed by: brooks, imp
Differential Revision: http

Remove checks for __GNUCLIKE macros for varargs.

All supported compilers (modern versions of GCC and clang) support
these.

PR: 263102 (exp-run)
Reviewed by: brooks, imp
Differential Revision: https://reviews.freebsd.org/D34800

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sys: make callout.h self-contained

Avoid including sys/types.h from sys/_callout.h (as we try to avoid having
headers starting with underscores depending on non-underscore headers)
by introducing __

sys: make callout.h self-contained

Avoid including sys/types.h from sys/_callout.h (as we try to avoid having
headers starting with underscores depending on non-underscore headers)
by introducing __sbintime_t in sys/_types.h and including that header
instead.

Reviewed by: imp
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D33500

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Reduce code duplication in machine/_types.h

Many of these typedefs are the same across all architectures or can
be set based on an architecture-independent compiler-provided macro
(e.g. __SIZEOF_SIZ

Reduce code duplication in machine/_types.h

Many of these typedefs are the same across all architectures or can
be set based on an architecture-independent compiler-provided macro
(e.g. __SIZEOF_SIZE_T__). These macros have been available since GCC 4.6
and Clang sometime before 3.0 (godbolt.org does not have any older clang
versions installed).

I originally considered using the compiler-provided `__FOO_TYPE__` directly.
However, in order to do so we have to check that those match the previous
typedef exactly (not just that they have the same size) since any change
would be an ABI break. For example, changing `long` to `long long` results
in different C++ name mangling. Additionally, Clang and GCC disagree on
the underlying type for some of (u)int*_fast_t types, so this change
only moves the definitions that are identical across all architectures
and does not touch those types.

This de-deduplication will allow us to have a smaller diff downstream in
CheriBSD: we only have to only change the (u)intptr_t definition in
sys/_types.h in CheriBSD instead of having to change machine/_types.h for
all CHERI-enabled architectures (currently RISC-V, AArch64 and MIPS).

Reviewed By: imp, kib
Differential Revision: https://reviews.freebsd.org/D29895

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MFHead @349476

Sponsored by: The FreeBSD Foundation

Reduce namespace pollution from r349233

Define __daddr_t in _types.h and use it in filio.h

Reported by: ian, bde
Reviewed by: ian, imp, cem
MFC after: 2 weeks
MFC-With: 349233
Sponsored by: The Fre

Reduce namespace pollution from r349233

Define __daddr_t in _types.h and use it in filio.h

Reported by: ian, bde
Reviewed by: ian, imp, cem
MFC after: 2 weeks
MFC-With: 349233
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20715

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sys/_types.h: avoid use of __has_feature()

Only fairly recent GCC versions support and sys/_types.h must work with
quite old compilers and without sys/cdef.h being included. The prior
workaround wo

sys/_types.h: avoid use of __has_feature()

Only fairly recent GCC versions support and sys/_types.h must work with
quite old compilers and without sys/cdef.h being included. The prior
workaround works fine, but we can have the same effect with compiler
macro definitions. In this specific case, compilers that define the
__intcap_t builtin type will define __SIZEOF_INTCAP__.

This reverts commit 029a09f18032353a9ae874590b879322efc6e53a
This reverts commit 19728f31ae421f40e2b0b0c775f4eedd7f927be0

Reviewed by: imp, des, kib, emaste
Effort: CHERI upstreaming
Fixes: 85ab981a8e4e ("sys/_types.h: define fallback __(u)intcap_t")
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D54009

show more ...

sys/_types.h: recognise char8_t as a builtin type in C++20

Unlike in C23 where it's a typedef, char8_t is a built in type in
C++20. Recognise it as such.

PR: 291449
Reported by: Tomoaki AOKI <jun

sys/_types.h: recognise char8_t as a builtin type in C++20

Unlike in C23 where it's a typedef, char8_t is a built in type in
C++20. Recognise it as such.

PR: 291449
Reported by: Tomoaki AOKI <junchoon@dec.sakura.ne.jp>
Approved by: markj (mentor)
Reviewed by: imp
Fixes: f0e541118c374869a8226eaa1320bb6eda248a20
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D54124

show more ...

sys/_types.h: Actually unbreak gcc build

Fixes: 19728f31ae42 ("sys/_types.h: Unbreak gcc build")
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D53986