adapt to ${CC_WNO_ADDRESS_OF_PACKED_MEMBER}

Simplify CWARNFLAGS to use ${CC_WNO_ADDRESS_OF_PACKED_MEMBER}
which works for both clang and gcc, and remove compiler-specific
equivalents.

bsd.own.mk: rename to CC_WNO_ADDRESS_OF_PACKED_MEMBER

Provide a single variable
CC_WNO_ADDRESS_OF_PACKED_MEMBER
with options for both clang and gcc, to replace
CLANG_NO_ADDR_OF_PACKED_MEMBER
CC_NO_ADDR_OF_PACKED_MEMBER
GCC_NO_ADDR_OF_PACKED_MEMBER

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

Appease clang -Waddress-of-packed-member for <ufs/lfs/lfs_accessors.h>,
in the same manner as done for sparc64; pointer substitution is just for
sanity check and harmless there.

Also move bootjs.net after we've evaluated $OBJS (thanks gson@)

branches: 1.41.4;
move .for generated rules after OBJS have been set.

centralize vers.c building for standalone programs.

branches: 1.39.2; 1.39.4;
Strip debug symbols from boot code

branches: 1.38.12; 1.38.30;
emit some linker -Map files so that we can figure out what symbols
in the boot loaders are.

Drop bootprog_maker (formerly enabled by -M) and bootprog_date (formerly
disabled by -D) from the output of newvers_stand.sh. Change -D to the
inverted logic, so that it adds the date to bootprog_rev in ().

Change all platforms accordingly. -D is added if MKREPRO is not yes and
wasn't present before. Platforms that didn't use -D don't depend on
MKREPRO now either.

branches: 1.36.4; 1.36.6; 1.36.8;
System utilities, boot programs and kernel modules are machine
(port) specific not CPU, so use MACHINE not MACHINE_ARCH.

Convert more MACHINE tests to MACHINE_ARCH

branches: 1.34.78; 1.34.86; 1.34.92;
merge ktrace-lwp.

Add SUPPORT_DHCP - otherwise bootp does not work (packet is too short for
root-path). From Christos.

branches: 1.32.14; 1.32.16;
Rename the JavaStation network boot loader: bootjs.elf -> bootjs.net.

Add support to build bootjs.elf - the secondary bootstrap used to netboot
JavaStations. Based on patches from Valeriy E. Ushakov.

Use ${HOST_SH} instead of `sh'.

If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.

sprinkle some: libkern.h, some -ffreestanding and some cast-y goodness,
all for the pleasure of the gcc 3 :-)

branches: 1.28.2;
Add support for large kernels by searching for a physical memory segment
to fit it in. As a bonus, the kernel is now also mapped to the virtual
address (i.e. KERNBASE) it is linked at.

Don't declare which exec formats to support in loadfile_machdep.h.
Instead, give each user of loadfile() control over which exec formats
it wants to support.

branches: 1.26.4;
objcopy -> ${OBJCOPY}; remove redundant definitions of OBJCOPY?= (it is
now in bsd.own.mk).

use the 32-bit compiler on sparc64 (but not yet enabled.)

branches: 1.24.2; 1.24.4;
Add PROM patches (forth code) as a table indexed with root node name
and prom version. Little tweaks to prom during secondary boot are
much easier then fragile work-arounds in the kernel. Currently this
is used for JavaStation 1 with OBP3.

Dispose of `boot.net.big'.

switch to sys/conf/newvers_stand.sh for generation of version file
sync the message in boot/version with other ports using newvers_stand.sh

Build a boot_big.net (based at 700000) in addition to boot.net,
allowing you to netboot a kernel with a ramdisk inside on systems
where memory is laid out to allow this.

branches: 1.20.4;
Make dependall work.

Revert to using <bsd.prog.mk> again, so we support all targets that may
be presented when building the system (noticed by Juergen Hannken-Illjes).

We need <bsd.obj.mk>.

Build several versions of the second-stage boot program, each linked
to run at a different base address. Boot image build procedures can
pick one which is least likely to fail..

The default boot program is again build to run at 0x340000.

branches: 1.16.2;
Move the boot block load address from 3MB to 7MB. The INSTALL kernel is
already too large, and GENERIC won't be far behind.

branches: 1.15.2; 1.15.4; 1.15.6;
Use ${SIZE}, ${OBJCOPY} rather than size and objcopy.

Better pad the artificial header to exactly 32 bytes.

Add bootinfo struct to pass symtab arguments.
XXX: This does not work with ELF yet, but I don't understand why...

Checkpoint of elf boot stuff:
- Use loadfile for both boot and installboot
- Fix problems with linking in bootxx
- Make installboot work with both a.out and ELF bootxx
- *WILL NOT BOOT YET ELF KERNELS* (a.out kernels work) I am working on it.

branches: 1.11.2; 1.11.4;
Use `-Ttext' switch & collect ld options in LINKFLAGS.

Use PROMLIB to streamline this code. This also provides the bulk of
Open Firmware boot code.

Clean vers.c & vers.o.

Use DESTDIR consistently when constructing `boot.net'.

Change load address to avoid cache-aliasing on machines with Harvard-style
cache implementations (notably the Hypersparcs).

Install a version of the secondary boot block in /usr/mdec that is
suitable for use on a server for diskless booting. Done mostly to
simplify the installation notes and avoid questions ...

branches: 1.5.8;
Completely rearrange SPARC boot code, modeling it after alpha and hp300
ports' boot programs. Also added support for loading gzip'd kernels,
useful for booting from floppy. From Jason R. Thorpe <thorpej@nas.nasa.gov>,
tested by Matthew Green <mrg@eterna.com.au> and Erik Fair <fair@clock.org>.

remove header munging hack.

update for kern/sa lib Makefile.inc changes.

Make this work with OBJ dirs.

Network booting; "oldmon" support; combine all functionality in single images.
Many thanks to Gordon Ross and Chuck Cranor for figuring out and testing
the old monitor (sun4) stuff.