K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2021-12-22T10:12:34.163338Z
K 7
svn:log
V 854
Add atomic and bswap functions to libcompiler_rt

There have been several mentions on our mailing lists about missing
atomic functions in our system libraries (e.g. __atomic_load_8 and
friends), and recently I saw __bswapdi2 and __bswapsi2 mentioned too.

To address this, add implementations for the functions from compiler-rt
to the system compiler support libraries, e.g. libcompiler_rt.a and and
libgcc_s.so.

This also needs a small fixup in compiler-rt's atomic.c, to ensure that
32-bit mips can build correctly.

Bump __FreeBSD_version to make it easier for port maintainers to detect
when these functions were added.

MFC after:	2 weeks
Differential Revision: https://reviews.freebsd.org/D26159

(cherry picked from commit 46c8c5540fe4995e01fcf2e173c05761e7ba9488)

Git Hash:   b148c7b87148b653fdbef9c5aa591b9abcd99e26
Git Author: dim@FreeBSD.org
END