src/sys/boot/i386/boot0, branch main

Move sys/boot to stand. Fix all references to new location

2017-11-14T23:02:19+00:00

Sponsored by:	Netflix

Use defs.mk name and prefer bsd.init.mk

2017-10-30T23:14:37+00:00

Also need to make some small tweaks to the Makefiles to use += rather
than = due to small shift in include file order.

Sponsored by: Netflix

Allow Clang's integrated assembler to assemble boot0

2017-06-23T18:41:49+00:00

dim@ compared clang IAS-built and GNU as-built boot0 and found them
equivalent.  IAS encoded one instruction using two bytes where GNU as
used three, and another instruction using three bytes where GNU as used
two.  The net result is equivalent and tested, so there is no need to
force IAS off for boot0.

Don't use -N to set the OMAGIC with data and text writeable and data

2016-09-03T15:26:28+00:00

not page aligned. To do this, use the ld script gnu ld installs on my
system.

This is imperfect: LDFLAGS_BIN and LD_FLAGS_BIN describe different
things. The loader script could be better named and take into account
other architectures. And having two different mechanisms to do
basically the same thing needs study. However, it's blocking forward
progress on lld, so I'll work in parallel to sort these out.

Differential Revision: https://reviews.freebsd.org/D7409
Reviewed by: emaste

Implement (ACFLAGS|CFLAGS|CXXFLAGS).SRC globally.

2016-03-26T03:46:12+00:00

Sponsored by:	EMC / Isilon Storage Division

Remove disconnected boot0ext.

2015-11-20T18:10:02+00:00

This was [re-]added in r127458 (apparently with disconnected history as well)
and never connected to the build.

It is no longer relevant for modern systems from the past 20 years.

Discussed with:	jhb
Sponsored by:	EMC / Isilon Storage Division

META_MODE: Remove DEP_MACHINE from Makefile.depend files.

2015-09-25T19:44:01+00:00

This has not been needed since r246865 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division

META_MODE: Remove DEP_RELDIR from Makefile.depend files.

2015-09-25T19:26:08+00:00

This has not been needed since r284171 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division

Add META_MODE support.

2015-06-13T19:20:56+00:00

Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp

Merge sync of head

2015-05-27T01:19:58+00:00