add a special rule to build m68k/fpu.c to avoid passing -msoft-float.
fixes GCC 6 kernel builds that use this file.

Defflag the M060SP option in one place, and make sure to include opt_m060sp.h
(and opt_fpsp.h) in the right places.

PR port-m68k/59776

branches: 1.57.4;
Make the M68K_MMU_* defines real kernel options, available in opt_m68k_arch.h.
For 68030, 68040, and 68060, infer M68K_MMU_MOTOROLA. For 68010 and 68020, it
must be an explicit option (set in std.${MACHINE} or, in the case of hp300,
inferred from the specific model option).

Bump required version (mkflagvar).

mkflagvar M68010 M68020 M68030 M68040 M68060

Make sigcode.s and sunos_sigcode.s build as their own stand-alone files.

Make compat_13_sigreturn13.s and compat_16_sigreturn14.s build as their
own stand-alone files and G/C the now-empty sigreturn.s.

Build m68k/support.s on its own; don't include it from locore.s

branches: 1.51.20;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

G/C "MAPPECOPY". It is the deadest of wood, and never actually worked in
NetBSD.

Remove compat_svr4 and compat_svr4_32, as discussed on tech-kern@ recently,
but also as discussed several times in the past.

branches: 1.47.58; 1.47.60;
Add m68k MD cpu_in_cksum.c.
Based on sys/netinet/cpu_in_cksum.c but just modified
to use traditional MD m68k/oc_cksum.s.

Makes ~5% improvements of ttcp(1) xfer rates on ATARI TT030 + SMC_TT.

fix PR 6724 - convert m68k options to defflag's. this means that
M680[12346] are now available from opt_m68k_arch.h. FPSP meantioned
in the PR has already been fixed, and i could not find any more.

i built these kernels to ensure i did not break their builds:

amiga: GENERIC DRACO
atari: HADES FALCON MILAN-PCIIDE
mac68k: GENERIC
sun2: GENERIC
sun3: GENERIC GENERIC3X
cesfic: attempted GENERIC, does not build due to lack of machine/bus.h
hp300: GENERIC
luna68k: GENERIC
mvme68k: GENERIC
news68k: GENERIC
next68k: GENERIC
x68k: GENERIC

branches: 1.45.6; 1.45.8;
Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.44.6; 1.44.10; 1.44.16; 1.44.18;
Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

Add MODULAR option. Include kernel linker stuff if MODULAR.

Remove COMPAT_HPUX.

branches: 1.41.2; 1.41.8;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.40.10;
Remove unused m68k/bcopy.s.
(src/common/lib/libc/arch/m68k/string/bcopy.S in libkern is enough)

Remove netns stuff.

branches: 1.38.6; 1.38.8; 1.38.14;
Add lock stubs for m68k. Amiga builds and runs now.

merge ktrace-lwp.

branches: 1.36.16;
SA_SIGINFO support for m68k

branches: 1.35.2;
Move (and unify) PMAP_DEBUG and FPU_EMULATE here - it is tested in
shared files.

Merge the nathanw_sa branch.

m68k syscall rototill:

- Switch all m68k-based ports over to __HAVE_SYSCALL_INTERN.
- Add systrace glue.
- Define struct mdproc in <m68k/proc.h> instead of <machine/proc.h>.
(They were all defined exactly the same anyway, other than a couple
of the MDP_* flags.)

branches: 1.32.8;
- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.30.4; 1.30.8;
Unification of the m68k syscall() function.

defopt FPSP.

Switch to MI ns_cksum.c - the MD ns_cksum.c is equivalent to it
(modulo some u_intX_t vs. u_char type usage). In particular, the
MD version didn't contain any MD code.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

branches: 1.26.2;
Normalize include paths.

Add COMPAT_SVR4 for m68k.

Move linux_reenter_syscall() to a common location and rename it to
reenter_syscall() - it's going to be shared with COMPAT_SVR4 and soon be
used by native code.

branches: 1.23.8;
Implement compat_13_sys_sigreturn().

Back out the defopt for M680?0. As pointed out to me, this breaks ports which
dont use the M680?0 the way Amiga, Atari, Mac68k, and X68k do. I must have
missed this in the past discussion about this project.

Move M680[2346]0 to opt_m68kcpu.h.
XXX Some explicit dependencies could be removed now from the individual
arch/$ARCH/conf/Makefile.$ARCH files, but this is still to be done.

Remove random.s.

Amiga uses the common m68k/sig_machdep.c now. Also moved its definition from
the other 68k ports' files.${port} to arch/m68k/conf/files.m68k.

add src/sys/arch/m68k/m68k/m68k_machdep.c

Add bcopy.s, copy.s, copypage.s, and regdump.c; they're common to all
m68k ports.

Add m68k/kgdb_m68k.c

branches: 1.15.2;
Build mappedcopy.c conditional on "options MAPPEDCOPY"

Pull in the COMPAT_M68K4K stuff when appropriate.

Add ns_cksum.c.

Remove ns_cksum.c (now in sys/conf/files)

new-config files list. missed this yesterday.

new RCS ID format.

Remove fpsp.U.

Remove bogon.

fix to avoid duplicate symbols w/hpfplib.

Remove copy.s. It's simply not that generic.

Add random.s.

make FPSP m68k-generic

add copy.s to files.m68k, and alphabetize files.m68k.newconf

add ddb files, and also make sure alphabetically ordered

common code

rename files files for new config/config.old naming

new RCS ID format.

Remove fpsp.U.

Remove bogon.

Remove copy.s. It's simply not that generic.

always assemble fpspnull.s

Add fpsp support. Comment out fpspnull line until I figure out how to
specify "not option" with new config. Don't need it yet, anyway.

Add random.s.

add copy.s to files.m68k, and alphabetize files.m68k.newconf

Use m68k/m68k/copy.s.

add ddb files, and also make sure alphabetically ordered

add files.m68k.newconf for the mac folks

This file is now obsolete.

Pull in the COMPAT_M68K4K stuff when appropriate.

new RCS ID format.

Remove fpsp.U.

Remove bogon.

fix to avoid duplicate symbols w/hpfplib.

Remove copy.s. It's simply not that generic.

Add random.s.

make FPSP m68k-generic

add copy.s to files.m68k, and alphabetize files.m68k.newconf

add ddb files, and also make sure alphabetically ordered

common code

Sprinkle a few VMSWAP_DEFAULT_PLAINTEXT for architectures where we do not
have any spare cpu cycles to waste (encrypted swap still could be
enabled by the admin in /etc/sysctl.conf).

branches: 1.1.2; 1.1.4; 1.1.10; 1.1.82; 1.1.86;
- add m68k/conf/std.m68k, which includes common standard options for m68k,
options EXEC_ELF32, EXEC_SCRIPTS, and CPU_IN_CKSUM for md cpu_in_cksum.c
- make all m68k ports include common arch/m68k/conf/std.m68k
from MD std.${MACHINE}