Document the new powerpc64le arch's initial specifications.
Certain things are subject to change while this is experimental. The most
likely change is that long double may switch to quad, dependent on POWER8
emulation assistance for __float128 being set up in the compiler (as
POWER8 does not have IEEE-compatible 128-bit hardware float, unlike POWER9.)
Sponsored by: Tag1 Consulting, Inc.
Document that RISC-V supports multiple page sizes: 4K, 2M, and 1G.
RISC-V's long double is always 128-bits wide, therefore quad precision.
Mention __riscv_float_abi_soft, which can be used to differentiate between
riscv64 and riscv64sf in userland code.
MFC after: 3 days
- Abbreviated month name in .Dd
- position of HISTORY section
- alphabetical ordering within SEE ALSO section
- adding .Ed before .Sh DESCRIPTION
- remove trailing whitespaces
- Line break after a sentence stop
- Use BSD OS macros instead of hardcoded strings
No .Dd bumps as there was no actual content change made
in any of these pages.
Submitted by: Gordon Bergling gbergling_gmail.com
Approved by: bcr
Differential Revision: https://reviews.freebsd.org/D24591
Now that LLD 10 is out, and required patches have landed, we are now ready
to finally switch away from the ancient in-tree ld.bfd.
Special thanks to Fangrui Song for many hours of work on getting the
32-bit powerpc lld ready for prime-time.
Reviewed by: emaste (earlier revision), jhibbits
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D24111
MIPS was the last arch to use external toolchain by default but uses
in-tree Clang and lld as of r359233, and now no table entries reference
the footnote.
All FreeBSD archs now use an in-tree toolchain - Clang and ELF Tool
Chain everywhere, and lld everywhere but 32-bit PowerPC (which still
uses ld.bfd). No archs use external toolchain by default.
Sponsored by: The FreeBSD Foundation
Now that we have updated the in-tree version of LLVM to 10.0, we have all the
necessary LLVM changes to use Clang+LLD as the default toolchain for MIPS.
Relnotes: yes
Reviewed By: emaste, jhb, brooks, kevans
Differential Revision: https://reviews.freebsd.org/D23204
- Enable clang and lld as system toolchains.
- Don't use external GCC for universe by default.
- Re-enable riscv64sf since it builds fine with clang + lld.
Reviewed by: emaste, mhorne
Relnotes: yes
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23089
- Drop mention of _LP64. FreeBSD's source generally uses __LP64__
instead of _LP64, and the relevant macros are better covered in the
"Predefined Macros" section.
- Fix a noun/verb disagreement.
Reviewed by: emaste
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22975
- Add missing .Pp after the end of some lists so that there is a blank
line before the subsequent paragraph.
- Use a more typical '-tag' bullet list of the make variable descriptions
at the end. This adds separation between bullets and is the formatting
typically used in manpages for this sort of list.
This enables LLVM as the default compiler for powerpc, powerpc64, and
powerpcspe, as well as LLD as the default linker for powerpc64.
LLD is not yet ready for prime time for powerpc and powerpcspe, but work is
continuing on it.
Submitted by: alfredo.junior_eldorado.org.br
Relnotes: YES
Differential Revision: https://reviews.freebsd.org/D20378
GCC 4.2.1 is being removed before FreeBSD 13, as are some other
components required by FreeBSD/sparc64. Contemporary GCC does not build
and there is currently no indication that anyone is going to address
these issues.
PR: 228919, 233405, 236839, 239851
Other architectures are documented in terms of the name that is displayed by
'uname -p', aka MACHINE_ARCH and TARGET_ARCH in the build system, now
aarch64 matches the rest of them.
PR: 220297
Compilers may define multiple variants of architecture-specific macros
(for example, both __x86_64 and __x86_64__). Add a note that the macros
documented in arch.7 are the preferred ones for FreeBSD.
Sponsored by: The FreeBSD Foundation
Remove all the details about armeb from arch(7), except for its
release start and end, like alpha, ia64 and pc98.
Differential Revision: https://reviews.freebsd.org/D16257
