libkvm: whitespace

Get rid of usrstack/USRSTACK. Document that the old version of getargv is
broken because of ASLR.

sun4v: Rename TLB_ defines to SUN4U_TLB_ so entries created using TSB_DATA() are properly setup for sun4u and sun4v. Relocate the cputyp variable from autoconf.c to locore.s and make it const in param.h so optimized code can be generated. Parts from OpenBSD. Optimization suggested by nakayama@. OK martin@, mrg@, nakayama@

Remove the #include <sys/user.h> from all of libkvm.
sys/user.h is a stub that just #includes sys/pcb.h.
There are no 'struct pcb' anywhere in here, so I'm extremely doubtful
any of the builds will fail.
OTOH it might be relying on a header that pcb.h includes.
In any case i386 and amd64 build.

branches: 1.15.6; 1.15.12;
Change kvm_pa2off() and kvm_kvatop() prototypes (private to kvm(3)):

-int _kvm_kvatop(kvm_t *, u_long, u_long *);
-off_t _kvm_pa2off(kvm_t *, u_long);
+int _kvm_kvatop(kvm_t *, vaddr_t, paddr_t *);
+off_t _kvm_pa2off(kvm_t *, paddr_t);

Basically, use vaddr_t for VA and paddr_t for PA. In addition, for variables
representing addresses, use paddr_t or vaddr_t, depending on the context.

For most arches, vaddr_t and paddr_t are equivalent to unsigned long. However,
the change was needed for exotic situations, like i386 PAE, were unsigned long
is not suitable for PA which are 64 bits long. As this required a complete
change of the function prototypes, all arches had to be adapted accordingly.

Core files from before this commit should still work with the new code; I did
not see any direct dependency between core's structure and kvatop/pa2off.

The change was compile tested for all arches, as it impacts all of them.

See also:

http://mail-index.netbsd.org/current-users/2010/09/07/msg014249.html

Ansify and KNF all functions within kvm(3). No objection on current-users@.

Used as ground for u_long => vaddr_t/paddr_t replacements in kvm(3)
private functions.

Compile tested for all arches. See also:

http://mail-index.netbsd.org/current-users/2010/09/07/msg014249.html

Use the new information about per-cpu mappings. Gdb now can examine
the interrupt stack.

Handle reading from raw disk devices.

Use the new sparc64 kcore cpu segment extensions to properly map VA/PAs
on kernels with more then 4 MB text/rodata segment.

branches: 1.10.16; 1.10.18; 1.10.22;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Consistently spell "crash dump" as two separate words. From jmc@openbsd.

#include <machine/vmparam.h> for PAGE_SIZE

branches: 1.7.2;
Don't include <machine/pmap.h> and <machine/vmparam.h> if _KERNEL isn't
defined. Include them explicitly in the few kvm_arch.c that need them.

Use %lx instead of %x with _kvm_err when arg is u_long.

Handle kernel cores properly.

<vm/vm.h> -> <uvm/uvm_extern.h>

remove redundant vm includes

branches: 1.2.8;
More trailing white space.

branches: 1.1.2;
Add enough of a kvm_sparc64.c to get the kvm library to build.