add GCC 14 and m68k support.

Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.

Undo previous lwp.h change.

Split __lwp_getprivate_fast and __lwp_*tcb from mcontext.h into a separate
lwp.h file.

distrib/sets/lists: Add a blank comment line between RCS id and body.

This serves as a buffer between RCS id changes and other changes to
the set lists, in an attempt to reduce the pain of merge conflicts
around mass set list changes.

No functional change intended.

branches: 1.72.2;
distrib/lists/sets/comp: Add gcc=12 obsolete entries for gcc-10/*.h.

Add a common m68k interrupt dispatch implementation.

Add a header file for 68030-specific MMU definitions, specifically the
Transparent Translation registers, that do not exist on the 68851. A
big comment at the top of the file describes the differences between
the 68851 and the 68030's MMU.

Add new headers that describe the 68851 (and 68030) MMU and
68040 (and 68060) MMU structures using names that more closely
align with Motorola's documentation.

The definitions here automagically adapt to 4K or 8K pages, based
on the value of PGSHIFT, which must be a compile-time constant.

mark all previously gcc=9 files as obsolete.

also mark a bunch of obsolete gcc headers as "comp-obsolete" "set".

should fix a 'postinstall fix obsolete' issue reported by uwe@.

lists/m68k: Obsolete gcc-9 headers

more updates for sets and GCC 12

- renable sanitizer, add new shlib versions, enable tsan for arm64,
including moving some stuff into the per-cpu/arch dir from 'mi'.
- fix mips64, 68k, and ia64
- mark many any-gcc-version things just as "gcc" and remove dups
- mark many gcc=9 only things as obsolete
- mark many gcc=10 only things as obsolete with gcc=12 (more could
be done here.)

various updates for GCC 10 support. remove dead gcc7/8 support
and properly mark obsolete files in gcc9/gcc10.

testing on amd64 and shark for GCC 9, and many platforms for GCC 10,
(though not arm yet.)

mostly support GCC 9 builds. some what tested with GCC 9 but
tested to not break GCC 8 builds for x86, arm*, vax, and sparc*.

Add MAX/MIN PAGE_SIZE and PAGE_SHIFT definitions of m68k for jemalloc(3).

Background:
- All m68k ports have fixed PAGE_SIZE value in their kernels,
but each port uses different PAGE_SIZE value (4096 or 8192)
due to historical reasons.
- Currently module(7) binaries are built per each port so
all m68k kernel sources don't support run-time variable PAGE_SIZE.
- MI <uvm/uvm_param.h> assumes that the port supports a variable
PAGE_SIZE on module(7) builds if both MAX_PAGE_SIZE and MIN_PAGE_SIZE
are defined and they have different values.
- On the other hand, jemalloc(3) checks MAX_PAGE_SHIFT in
src/external/bsd/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h
for internal optimization.
- m68k ports share userland binaries (especially pkgsrc binaries)
among all ports, so we need to define MAX_PAGE_SHIFT as 13 to
support m68k ports where PAGE_SIZE==8192.
(though this would affect only if static binaries built on
4k page hosts are executed on 8k page hosts)

To solve these inconsistency on PAGE_SIZE definitions,
we should have an independent PAGE_SIZE related definitions
for userland, but it requires major reorganization.
For now (especially for netbsd-9) we define MAX/MIN PAGE_SIZE and
PAGE_SHIFT values in <m68k/vmparam.h> only in !defined(_KERNEL) case.

Discussed on source-changes-d@ and tech-kern@ with christos@ and thorpej@:
https://mail-index.netbsd.org/source-changes-d/2020/01/thread1.html#012035
https://mail-index.netbsd.org/tech-kern/2020/01/thread1.html#025954

Should be pulled up to netbsd-9.

gcc 8 set lists updates. i don't appear to have broken gcc 7 builds
but i only tested a couple of them.

branches: 1.61.2;
add basic gcc-7 support in sets lists and filesystem. mips gained
a header. assumes it's otherwise mostly the same as gcc-7.

- mark gcc=5 files obsolete
- make includes always available, not only when gcccmds
- mark files obsolete consistently

If we are building gcc, we always install the include files, otherwise
we can't build things even when cross-compiling because of missing header
files (like stdatomic.h). Really all the md/ad header files now will be
installed when mkgcccmds=no, but I've only fixed m68k.

add gcc 4.5 files. updating a m68k system gave me:

rmdir: /usr/include/gcc-4.5: Directory not empty
Can't remove obsolete directory /usr/include/gcc-4.5

because these two files were still present.

- Cleanup for dynamic sysctl:
- Remove unused *_NAMES macros for sysctl.
- Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
use them on all m68k machines.

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

branches: 1.55.2; 1.55.4;
updates for GCC 6.4: add gcc-6 specific headers, combine some
all-gcc files, bump the shlib versions on new libs.

convert HAVE_GCC handling to modern GCC release numbering:
- HAVE_GCC=5 is now the default (vs. HAVE_GCC=53 we've been using for
GCC 5.4 and GCC 5.5.)
- remove some more GCC 4.8 code. we don't support GCC 4 here.
- adjust set lists to gcc=5 from gcc=53.

add some basic HAVE_GCC=6 handling (totally unused so far.)

set fixes for GCC 5.3.

(only arm is tested so far, but there's a pattern i can see :-)

add fenv.

now that we only support gcc 4.8, make all the gcc tags just "gcc".
this should help with next-gcc, when we can add back gcc=48 and
gcc=5x tags, as necessary.

obsolete and clean up gcc=3 (3.3), gcc=4 (4.1), and gcc=45 (4.5) sets.

add support for GCC 4.8 sets.

Sort entries in strcmp order.

Export <m68k/fpreg.h>

Add a new "debug" set that gets built when ${MKDEBUG} is set. On evbarm:
-rw-r--r-- 1 root src 35806068 Jan 16 10:47 base.tgz
-rw-r--r-- 1 root src 57374069 Jan 16 10:48 comp.tgz
-rw-r--r-- 1 root src 101286193 Jan 16 10:49 debug.tgz
...
This allows always building the debugging code and libraries but not
installing it (although now it is placed in the default sets if ${MKDEBUG}
is set

branches: 1.45.2; 1.45.8;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

add gcc-4.5/tgmath.h

- un-obsolete a pair of files we want to remain installed (XXX i wonder
if a way to have "clean builds" not run "postinstall fix obsolete" in
the $DESTDIR so that these sorts of errors will appear as set list
errors instead of being skipped
- fix the list of headers to install for GCC 4.5, based upon the mknative
${G_EXTRA_HEADERS}. XXX move the location of G_EXTRA_HEADERS.

add missing debuglib

fixes for MKDEBUG=yes.

Add a bunch of .debug entries, determined by inspecting the equivalent
comp lists.
Inspired by PR 39370

branches: 1.39.12; 1.39.16;
Sync with changes introduced by merging the newlock2 branch.

obsolete db_machdep.h

Populate /usr/include/m68k with both pmap_motorola.h and pte_motorola.h.
/usr/include/m68k/pmap.h expects to find pmap_motorola.h, and
/usr/include/machine/pte.h wants pte_motorola.h.

branches: 1.36.8;
Add <machine/wchar_limits.h>.

reformat whitespace

Support MKPROFILE=no

Significant overhaul of how the sets are used:

* Add an optional third field to the sets file which is a list of
comma separated keywords that control if the line is printed.
Currently supported keywords
kerberos4 ${MKKERBEROS4} != no
kerberos ${MKKERBEROS} != no
lint ${MKLINT} != no
obsolete ${obsolete} != 0.
In this case, non obsolete files are not printed.
(This will allow future support for builds with variables such as
MKHESIOD and MKYP set to "no".)

* Use sh(1)'s getopts where appropriate, and otherwise cleanup the
various scripts.

* Move defaults for sets.subr from sets.defaults into sets.subr.
Move replicated code for determining stuff such as shlibs type
from various scripts into sets.subr.

* Merge the obsolete.*, krb.*, krb4.* and lint.* into the appropriate
main lists with the relevant third field keyword(s).

add m68k/cpuframe.h

Back out change that made libpthread per-platform. It is *intentional*
that the build fails on platforms which do not yet have libpthread support.

Not all ports/archs have pthread support. So split this up by the proper arch's
for determining which ones get the libraries. Tested on dreamcast, macppc
and i386 builds to cover non builds, ad and md mods

Update for nathanw_sa merge.

Catch up to new pmc header files.

Added ./usr/include/m68k/proc.h to the list.

Added support for ad.${machine_cpu}.shl listfiles. These list
architecture-dependent files that are present when shared libraries are in use.

branches: 1.25.2;
Include m68k/bus_dma.h

Add libm68k.so.

Add elf2aout.

No point in installing svr4_machdep.h; get rid of it.

Add <machine/int_fmtio.h>.

Add <machine/int_limits.h>.

Add <machine/int_const.h>.

Add <machine/int_mwgwtypes.h>.

Add m68k/byte_swap.h.

Move c++rt0.o and scrt0.o from ad.m68k to md lists
since they are available only on a.out ports.

add <m68k/endian_machdep.h>

Add <machine/int_types.h>.

branches: 1.13.4;
Add <machine/lock.h>

Add package names. Later tonight or tomorrow AM, I will post a writeup of
this to tech-{pkg,install}. In short, the pkg names in (new) second
field will be used by the build process under basesrc/src/dist/pkg to
generate PLISTs. The package divisions here may be two finely or coarsely
grained, although I think they're a happy medium -- I will give more
detail/justification in the writeup.

Add <machine/math.h>.

Move the last of the arch/machine-dependant man pages to the MI set.
Woohoo!

Add svr4_machdep.h.

Add a NetBSD RCS tag to each distrib list file.

Provide a minimal instruction/data cache synchronization C binding.
(The function has always been in the kernels as special trap #12).
In response to PR 4951 by Hauke Fath.

Update for bswap.h and byte_swap.h includes.

Set cleanup:
- make all ports egcs; move stuff to mi and shl.*
- fix m68k-based comp sets to use usr/include/$MACHINE (as
usr/include/machine is now a symlink); add directory entries where missing

Add elf_machdep.h

Do datbase normalization on sets/lists/*/* containing shared-library
related files. Partition into three categories:
* shl.mi -- MI sharedlib files present on all ports with shared libs
* shl.aout -- MI sharedlib files present on all ELF ports
* shl.elf -- MI sharedlib files present on all a.out ports

Add rudimentary shl* support to makeflist.
Remove files left empty after shlib normalization.
Add ad.mips where appropriate.
Make libc, libedit numbers consistent (libc.so.12.29, libedit.2.1).

Move c++rt0 from mi to md files, except for 68K where it goes into ad.68k.

* remove empty md.* files now that makeflist supports non-existant md.* files
* factor all m68k common stuff into lists/*/ad.m68k
XXX: this should be done for mips (when it's not just the pmax), and
powerpc (when there's a powerpc port put here ...)