Change function definitions using the identifier-list form used in the
1st edition of Kernighan and Ritchie's The C Programming Language, to
that of the parameter-type-list form described in the ANSI

Change function definitions using the identifier-list form used in the
1st edition of Kernighan and Ritchie's The C Programming Language, to
that of the parameter-type-list form described in the ANSI X3.159-1989
standard.

In ISO/IEC 9899:2023 drafts, there is only one form of function definition.
"N2432 Remove support for function definitions with identifier lists".

ok kettenis@

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Firmware that supports the "parallel boot" feature allows us to read the PRI
using a simple hypervisor call. Implement this.

Tested by jmatthew@

trivial "if(x) free(x)" replacement by "free(x)"

ok miod@

Convert to uiomove(). ok kettenis@

First step towards making uiomove() take a size_t size argument:
- rename uiomove() to uiomovei() and update all its users.
- introduce uiomove(), which is similar to uiomovei() but with a size_t.
-

First step towards making uiomove() take a size_t size argument:
- rename uiomove() to uiomovei() and update all its users.
- introduce uiomove(), which is similar to uiomovei() but with a size_t.
- rewrite uiomovei() as an uiomove() wrapper.
ok kettenis@

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add a size argument to free. will be used soon, but for now default to 0.
after discussions with beck deraadt kettenis.

M_WAITOK cleanup of two cases:

1) Allocating with M_WAITOK, checking for NULL, and calling panic() is
pointless (malloc() will panic if it can't allocate) so remove the check
and the call.

2) Alloc

M_WAITOK cleanup of two cases:

1) Allocating with M_WAITOK, checking for NULL, and calling panic() is
pointless (malloc() will panic if it can't allocate) so remove the check
and the call.

2) Allocating with M_WAITOK, checking for NULL, and then gracefully
handling failure to allocate is pointless. Instead also pass M_CANFAIL
so malloc() doesn't panic so we can actually handle it gracefully.

1) was done using Coccinelle.

Input from oga.

ok miod.

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spaces

Implement /dev/mdesc, a device to read the machine description on sun4v
(virtual) machines.

Make nvram writable (if necessary) before calling OF_setprop(). Prevents
faults on machines where we map nvram write-only (through the clock chip).

Remove bsd_openprom.h.

Be more careful when asking for the next property. help and ok kettenis@.

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

- make a copyout into a copyin for correct semantics
- handle openfirmware error reports correctly
ok pb

Remove fetch(9) and store(9) functions from the kernel, and replace the few
remaining instances of them with appropriate copy(9) usage.

ok art@, tested on all arches unless my memory is non-ECC

de-register

From NetBSD:
In OPIOCNEXTPROP: if we are at the last property, set the buffer length to
0 instead of setting it to an uninitialized value (len).

Remove the other references to promvec

promvec was never initialized. For now, just call OF directly.

ifdef SUN4 ? yeah, right.

First round of __P removal in sys

$OpenBSD$

Lot of stuff... Some from NetBSD, some from OpenBSD, minor modifications