BPF (eBPF) is an independent instruction set architecture which is
introduced in Linux a few years ago. Originally, eBPF execute
environment was only inside Linux kernel. However, recent years there
are some user space implementation (https://github.com/iovisor/ubpf,
https://doc.dpdk.org/guides/prog_guide/bpf_lib.html) and kernel space
implementation for FreeBSD is going on
(https://github.com/YutaroHayakawa/generic-ebpf).
The BPF target support can be enabled using WITH_LLVM_TARGET_BPF, as it
is not built by default.
Submitted by: Yutaro Hayakawa <yhayakawa3720@gmail.com>
Reviewed by: dim, bdrewery
Differential Revision: https://reviews.freebsd.org/D16033
dirdeps.mk and meta.autodep.mk will now look for
Makefile.depend.options
to handle optional dependencies, the work is all done by
dirdeps-options.mk
Also update to latest meta.stage.mk and gendirdeps.mk
Reviewed by: bdrewery
Differential Revision: https://reviews.freebsd.org/D15701
As of r336972 lld is capable linking the armv7 kernel and userland,
so enable it by default.
PR: 229050
Reviewed by: kevans
Tested by: kevans
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D16528
By default ld.lld should be the bootstrap linker (only) on i386 right
now. Once the i386 exp-run with LLD_IS_LD has a good result this will
also be enabled by default.
Reported by: andrew
Pointy hat to: emaste
Akin to r327783 for amd64. lld has been usable for amd64 for quite some
time, but a couple of issues remained that affected i386. These were
recently addressed upstream in lld and merged into FreeBSD or addressed
directly in FreeBSD (r326831, r326879, r326897, r326957, r333401,
r334626, r336664).
Similarly to the intial amd64 commit this change enables lld only as the
bootstrap linker (used to link the kernel and userland libraries and
executables), while GNU ld.bfd is still installed as /usr/bin/ld and
used for ports builds. That will be changed shortly, after an exp-run.
This is a recommit of r327823 after additional lld fixes.
PR: 225128 (exp-run)
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
The padding makes it much easier to read, but occasionally means that commits
like this one have to be done to follow up. I intentionally kept this
separate from r336841 to try and make things easier to follow later on.
Approved by: bapt (mentor)
r336773 removed all things xscale. However, some things xscale are
really armv5. Revert that entirely. A more modest removal will follow.
Noticed by: andrew@
The OLD XSCALE stuff hasn't been useful in a while. The original
committer (cognet@) was the only one that had boards for it. He's
blessed this removal. Newer XSCALE (GUMSTIX) is for hardware that's
quite old. After discussion on arm@, it was clear there was no support
for keeping it.
Differential Review: https://reviews.freebsd.org/D16313
target.
Also update the pfctl tests Makefile to work with this change.
Approved by: bapt (mentor)
Differential Revision: https://reviews.freebsd.org/D16430
It works excellent, but KDB disassembler and DTrace FBT provider for
RISC-V do lack support for it. They currently handle 4-byte instructions
only, while C-compressed ISA extension introduces 2-byte instructions
freely mixing them together.
So disable it for now.
Reviewed by: markj@
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16436
This paves the way for moving config files out of head/etc and into the
directories with the src.
Approved by: bapt (mentor)
Differential Revision: https://reviews.freebsd.org/D16406
This moves the bulk of the geli support from lib386/biosdisk.c into a new
geli/gelidev.c which implements a devsw-type device whose dv_strategy()
function handles geli decryption. Support for all arches comes from moving
the taste-and-attach code to the devopen() function in libsa.
After opening any DEVT_DISK device, devopen() calls the new function
geli_probe_and_attach(), which will "attach" the geli code to the open_file
struct by creating a geli_devdesc instance to replace the disk_devdesc
instance in the open_file. That routes all IO for the device through the
geli code.
A new public geli_add_key() function is added, to allow arch/vendor-specific
code to add keys obtained from custom hardware or other sources.
With these changes, geli support will be compiled into all variations of
loader(8) on all arches because the default is WITH_LOADER_GELI.
Relnotes: yes
Sponsored by: Microchip Technology Inc
Differential Revision: https://reviews.freebsd.org/D15743
to be displayed when make is called with -s. Replace it by ${ECHO}.
Reviewed by: brd, bdrewery
Approved by: brd, bdrewery
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D16195
Add src.conf knob to disable the installation of /var/db/services.db
Default to leaving services.db in place, but allow the removal of the
file and its creation with a src.conf knob.
This file ends up being 2MB in size. For small systems this is a waste
of space but its a tradeoff.
Reviewed by: bdrewery
Differential Revision: https://reviews.freebsd.org/D9655
ACFLAGS is only used in addition to CFLAGS, so setting the options in
both was redundant. However, ACFLAGS is added to the command line
after CFLAGS, so the settings from ACFLAGS were applied for assembly
files in kernel modules after the kernel-specific march/abi in CFLAGS.
As a result, the hard-float ACFLAGS in bsd.cpu.mk was overriding the
soft-float CFLAGS.gcc in sys/conf/kern.mk. In particular,
dtrace_asm.o was compiled as hard-float and the linker refused to link
dtrace.ko since its object files contained a mix of hard and soft
float.
Reviewed by: br
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D16054
For developers gensnmptree can now generate functions for enums to convert
between enums and strings and to check the validity of a value.
The sources in FreeBSD are now in sync with the upstream which allows to
bring in IPv6 modifications.
This is needed for -m32 support which is used in the kernel cloudabi32 module.
Tweak the style to make it easier to understand.
MFC after: 2 weeks
X-MFC-with: r335706
Reported by: Mark Millard
Sponsored by: Dell EMC
Need to handle LLD_BOOTSTRAP separately (for archs like i386).
This would be much better off with an off-by-default option like
SHARED_TOOLCHAIN that universe force-enabled. Then a normal buildworld
would store the toolchain there if enabled and otherwise in WORLDTMP
with only the 1 arch selected.
MFC after: 3 weeks
Sponsored by: Dell EMC
LLVM_TARGET_* will auto be set based on LLVM_TARGET_ALL and MK_CLANG.
If LLVM_TARGET_ALL is disabled, during a cross-build, then SYSTEM_COMPILER
and SYSTEM_LINKER are auto disabled.
This option should be used by users rather than the per-arch LLVM_TARGET
options as it is simpler to maintain for them should the supported
target list change.
MFC after: 2 weeks
Reviewed by: sbruno, dim
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D16020
This makes it possible, through src.conf(5) settings, to select which
LLVM targets you want to build during buildworld. The current list is:
* (WITH|WITHOUT)_LLVM_TARGET_AARCH64
* (WITH|WITHOUT)_LLVM_TARGET_ARM
* (WITH|WITHOUT)_LLVM_TARGET_MIPS
* (WITH|WITHOUT)_LLVM_TARGET_POWERPC
* (WITH|WITHOUT)_LLVM_TARGET_SPARC
* (WITH|WITHOUT)_LLVM_TARGET_X86
To not influence anything right now, all of these are on by default, in
situations where clang is enabled.
Selectively turning a few targets off manually should work. Turning on
only one target should work too, even if that target does not correspond
to the build architecture. (In that case, LLVM_NATIVE_ARCH will not be
defined, and you can only use the resulting clang executable for
cross-compiling.)
I performed a few measurements on one of the FreeBSD.org reference
machines, building clang from scratch, with all targets enabled, and
with only the x86 target enabled. The latter was ~12% faster in real
time (on a 32-core box), and ~14% faster in user time. For a full
buildworld the difference will probably be less pronounced, though.
Reviewed by: bdrewery
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11077
This works similar to WITH_SYSTEM_COMPILER added in r300354. It only
supports lld via WITH_LLD_BOOTSTRAP.
When both SYSTEM_COMPILER and SYSTEM_LINKER logic passes then libclang
will not build in cross-tools. If either check fails though then
libclang is built.
The .info is reworked to notify when libclang will be built since if
either clang or lld needs to be rebuilt, but not the other, the
notification can lead to confusion on why "clang is building".
-fuse-ld= is not used with this method so some combinations of compiler
and linker are expected to fail.
A new 'make test-system-linker' target is added to see the logic results.
Makefile.inc1:
CROSS_BINUTILS_PREFIX support had to be moved higher up so that XLD
could be set and MK_LLD_BOOTSTRAP disabled before checking SYSTEM_LINKER
logic as done with SYSTEM_COMPILER. This also required moving where
bsd.linker.mk was read since XLD needs to be set before parsing it. This
creates a situation where src.opts.mk can not test LINKER_FEATURES or
add LLD_BOOTSTAP to BROKEN_OPTIONS.
Reviewed by: emaste (earlier version)
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D15894
Aligns the build with the FreeBSD traditional approach to not build in
contrib/, and to track inter-dependencies between libraries.
With help from: bdrewery
Reviewed by: bdrewery, hselasky
Sponsored by: Mellanox Technologies
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D15648
Implement MK_NVME now that the expression for where NVMe is
complicated. Default it to "yes" for x86 and powerpc64 and
no everywhere else. Use it in camcontrol to define WITH_NVME
for those platforms where we support nvme.
This should fix the newly introduced nvme files to camcontrol
which were building everywhere.
Pointy Hat To: imp
Sponsored by: Netflix
