Commit Graph

8 Commits

Author SHA1 Message Date
Eric van Gyzen
fac6dee9eb Remove tests for obsolete compilers in the build system
Assume gcc is at least 6.4, the oldest xtoolchain in the ports tree.
Assume clang is at least 6, which was in 11.2-RELEASE.  Drop conditions
for older compilers.

Reviewed by:	imp (earlier version), emaste, jhb
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D24802
2020-05-12 15:22:40 +00:00
Warner Losh
f5a95d9a07 Remove NAND and NANDFS support
NANDFS has been broken for years. Remove it. The NAND drivers that
remain are for ancient parts that are no longer relevant. They are
polled, have terrible performance and just for ancient arm
hardware. NAND parts have evolved significantly from this early work
and little to none of it would be relevant should someone need to
update to support raw nand. This code has been off by default for
years and has violated the vnode protocol leading to panics since it
was committed.

Numerous posts to arch@ and other locations have found no actual users
for this software.

Relnotes:	Yes
No Objection From: arch@
Differential Revision: https://reviews.freebsd.org/D20745
2019-06-25 04:50:09 +00:00
Warner Losh
891b84a3aa Invent new LDR_INTERP for the loader interpreter to use. Use this in
preference to LIBFICL{,32}. LIBFICL{,32} are now always defined, but
LDR_INTERP{,32} is defined empty when building w/o forth (aka the
simple interpreter) and defined to LIBFICL{,32} when we are building
forth.
2018-02-02 15:40:49 +00:00
Kyle Evans
62821e5720 stand: Move sections around to fix stand/ build with ld.lld on armv7
When building loader bits, lld fails with the following error:
"ld: error: section: .dynamic is not contiguous with other relro sections"
on both ubldr and EFI loader.

Move .dynamic up to make ld.lld happy, adjust .got as necessary for ubldr.

Tested on:	OrangePi One (ld.lld, ubldr)
Tested on:	Banana Pi-M3 (ld.lld, ubldr)
Tested on:	qemu-armv7 (ld.lld, EFI)
Tested on:	qemu-armv7 (ld.bfd, EFI)
Tested on:	Raspberry Pi 2 (ld.bfd, ubldr) [manu]
Tested on:	Banana Pi-M2 (ld.bfd, ubldr) [manu]
Reviewed by:	andrew, emaste, imp
Differential Revision:	https://reviews.freebsd.org/D13942
2018-01-18 22:46:47 +00:00
Warner Losh
25c2f4cb95 Move loader help file definitions to being 100% inside of loader.mk.
HELP_FILES is a loader only thing, so move it to loader.mk. Only
generate the help file if HELP_FILES is defined. Adjust Makefiles to
new convention. Fix a few cases where ${.CURDIR}/ was missing
resulting in missing bits from the help files.

Sponsored by: Netflix
2017-12-18 04:51:34 +00:00
Ian Lepore
12b92a343c Save and restore r9 register in arm ubldr. In old gcc 4.2, r9 was a callee-
saved register, but in arm EABI it may be either callee-saved or dedicated
to some special purpose (such as a TLS pointer).  It appears clang does not
treat it as a callee-saved register (instead using it as another work
register, similar to r12).

Another important side effect of these changes is that saving an extra
register in the push/pop statements keeps the stack aligned to an 8-byte
boundary during the self_reloc() call, as it always should have been.

As stated in the PR...

Essentially the important caller-saved registers are pushed (r0, r1, r9, lr)
before the relocation call, and popped after.  Then r8/r9 are saved as usual
for the syscall trampoline, and lr is stored in r8 (now free) as a
callee-saved value before calling into `main`.

The call to `main` can no longer be a tail call because we must restore r9
especially after main returns (although since we have used r8 to hold lr we
must also restore this).

PR:		224008
2017-12-10 21:51:27 +00:00
Warner Losh
8a4217aacf Move some more common stuff up to Makefile.inc. In particular, the no
simd / no float stuff is centeralized here. Also centralise
-ffreestanding since it is specified everywhere.

This, along with a change to share/mk/bsd.cpu.mk to include -mno-avx2
in CFLAGS_NO_SIMD should fix building for newer machines (eg with
CPUTYPE=haswell) where clang was generating avx2 instructions.

Sponsored by: Netflix
2017-11-20 22:42:17 +00:00
Warner Losh
ca987d4641 Move sys/boot to stand. Fix all references to new location
Sponsored by:	Netflix
2017-11-14 23:02:19 +00:00