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.

branches: 1.38.36;
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: 1.37.16; 1.37.18;
fenv for m68k

branches: 1.36.10; 1.36.28;
Obsolete pow(4) and rtcalarm(8). Discussed in port-x68k@.
Probably the combination of pow(4) ioctl and rtcalarm(8) does
not work for a long time, and nobody uses them.
I'll rewrite a part about power switch handler as a new device.

branches: 1.35.2;
machine/stdarg.h and machine/varargs.h are gone

Sort

Remove x68k/include/pci_machdep.h.
x68k does not have PCI-bus, and no one refers to it.

branches: 1.32.38; 1.32.40; 1.32.42; 1.32.44;
Stop installing <machine/intr.h> on x68k.
Suggested by simonb@ and tsutsui@.

branches: 1.31.2; 1.31.6;
Merge newlock2 to head.

branches: 1.30.4;
don't install <machine/db_machdep.h>, this is kernel only

branches: 1.29.4; 1.29.8;
merge ktrace-lwp.

branches: 1.28.12;
Populate kbdmap-related definitions to the userland.
Also g/c unused ioctls.
Pointed out by he.

Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

An unexported header file was #included from an exported header file.
Introduce <machine/opmreg.h> and move some definitions useful to
userland progs.

branches: 1.25.2;
Merge the nathanw_sa branch.

Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.

Sort.

Implement pmc(9) -- An interface to hardware performance monitoring
counters. These counters do not exist on all CPUs, but where they
do exist, can be used for counting events such as dcache misses that
would otherwise be difficult or impossible to instrument by code
inspection or hardware simulation.

pmc(9) is meant to be a general interface. Initially, the Intel XScale
counters are the only ones supported.

branches: 1.21.2;
bsd_audioio.h was obsolated by vs0

No point in installing svr4_machdep.h.

branches: 1.19.2; 1.19.8;
Remove unneeded whitespace.

Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.

Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.

branches: 1.14.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.

Require that each each MACHINE/MACHINE_ARCH supply a lock.h. This file
contains the values __SIMPLELOCK_LOCKED and __SIMPLELOCK_UNLOCKED, which
replace the old SIMPLELOCK_LOCKED and SIMPLELOCK_UNLOCKED. These files
are also required to supply inline functions __cpu_simple_lock(),
__cpu_simple_lock_try(), and __cpu_simple_unlock() if locking is to be
supported on that platform (i.e. if MULTIPROCESSOR is defined in the
_KERNEL case). Change these functions to take an int * (&alp->lock_data)
rather than the struct simplelock * itself.

These changes make it possible for userland to use the locking primitives
by including <machine/lock.h>.

Install "machineendian_machdep.h".

C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.

branches: 1.10.2;
Add COMPAT_SVR4 for m68k.

branches: 1.9.4;
Merged minoura_x68k_bus_h branch.

Pullin m68k/ieee.h.

Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

branches: 1.6.2;
Added intr.h

Added an include file on port dependent boot information.

Moved parioctl.h to the system header directory.

Moved grfioctl.h and iteioctl.h to the public include directory.

Add elf_machdep.h to the INCS list.

Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.