- 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/co

- 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}

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First attempt at bus_space(9) support for sun3 with common sun68k/bus.c:
- make sun3 port use common sun68k files as much as possible
- add temporary options _SUN2_ in std.sun2 until sun3 can share a

First attempt at bus_space(9) support for sun3 with common sun68k/bus.c:
- make sun3 port use common sun68k files as much as possible
- add temporary options _SUN2_ in std.sun2 until sun3 can share all
sun68k files (autoconf.c and isr.c are not yet)
- move sun68kvme declaration temporary as well from files.sun68k to files.sun2
- rename and move sun68k_find_prom_map() function to MD sources since it
can't be shared with sun3
- add bus tag members to struct confargs and initilize them where appropriate

XXX1: MD bus_dma(9) backends are not implemented (yet).
XXX2: more code (obio etc.) should be shared among sun3, sun3x and sun2.

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merge ktrace-lwp.

include "conf/std".

merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations i

merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations in (all the copies of) cpu.h.
- define M68K_VAC on platforms which have a VAC.
- switch the sun platforms to the (now common) proc_trampoline().
- do the phys_map thang on the sun platforms too, no reason not to.

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add "-m68030" for sun3x, addresses PR 15312.

switch sun3 to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return values in %a0 instead of %d0.
C symbols no longer prepend an underscore,

switch sun3 to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.

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Remove prefix construction for softdeps. Add SOFTDEP option to GENERIC.

Add

prefix ../gnu/sys
cinclude "conf/files.softdep"
prefix

to all std.* files, so that soft dependencies can be activated using
"options SOFTDEP".

eliminate the PMAP_NEW option by making it required for all ports.
ports which previously had no support for PMAP_NEW now implement
the pmap_k* interfaces as wrappers around the non-k versions.

clean up kernel/config files files for machVM lossage.

move sun3 to UVM by default. only pica/arc & x68k left.

Move the sun3-vs-sun3x stuff into std.sun3 and std.sun3x
Configure P4 frame buffers at the address of their P4 reg.
Move messy Sun3 bw2 and cg4 configs to included files.