src/include/arm, branch main

Add sys/_align.h replacing machine/_align.h

2025-12-10T10:57:50Z

Define _ALIGNBYTES using sizeof(void *) (no functional change on any existing architecture) which will allow it to work with CHERI were we must align things up to capability alignment. In _ALIGN, replace integer manipulation which does not preserve pointer provenance with a type and provenance preserving builtin. This requires modest changes in code which assumes _ALIGN returns an integer, but those are relatively rare. Reviewed by: kib, markj Effort: CHERI upstreaming Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D53947

arm64: lib32: Don't try to install removed

2025-06-18T16:00:08Z

Reported by: Herbert J. Skuhra (herbert gojira.at) Fixes: 79d8a99ee583 ("runq: Deduce most parameters, remove machine headers") MFC after: 1 month Event: Kitchener-Waterloo Hackathon 202506 Sponsored by: The FreeBSD Foundation

arm64 lib32: prepare arm64 headers to redirect to arm

2023-07-25T23:59:26Z

In order to compile lib32 libraries and other 32-bit code on arm64, needs to be redirected to an arm header rather than arm64 when building with -m32. Ifdef the arm64 headers that are installed in /usr/include/machine and used by user-level software (including references from /usr/include/*.h) so that if __arm__ is defined when including the arm64 version, is included rather than using the rest of the file's contents. Some arm headers had no arm64 equivalent; headers were added just to do the redirection. These files use #error if __arm__ is not defined to guard against confusion. Also add an include/arm Makefile, and modify Makefiles as needed to install everything, including the arm files in /usr/include/arm. fenv.h comes from lib/msun/arm/fenv.h. The new arm64 headers are: acle-compat.h cpuinfo.h sysreg.h Reviewed by: jrtc27, imp Differential Revision: https://reviews.freebsd.org/D40944