avoid using 'extern <func|data>;' inside a .c file, but instead
use header files and ensure definitions are not duplicated or
are technically (if not in codegen) wrong.

branches: 1.20.2;
Reject setting unaligned Program Counter

Patch taken from OpenBSD.

Tested in qemu.

Fixes PR port-sparc/54734 by Andreas Gustafsson

branches: 1.19.20;
- allocate state if we did not have any in fpregs
- make fpstate explicitly start with fpregs for better type checking
- use c11 initializers

branches: 1.18.6; 1.18.10;
Remove __HAVE_PROCESS_XFPREGS and add the extra parameter for the size
of the fp save area to all the process_read_fpregs() and
process_write_fpregs() functions.
None of the functions have been modified to use the new parameters.
The size is set for all the writes, but some of the arch-specific reads
just pass NULL.
The amd64 (and i386) need variable sized fp register save areas in order
to support AVX and other enhanced register areas.
These functions are rarely called - so the extra argument won't matter.

branches: 1.17.12; 1.17.22; 1.17.26;
Use lwp_getpcb() on sparc{64} and sun2/3 MD code, clean from struct user usage.

KNF, same object code generated.

bcopy -> memcpy

branches: 1.14.44; 1.14.52; 1.14.58;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.13.26;
ANSIify. Same binary code is produced for GENERIC.MP + KGDB + DDB.

branches: 1.12.2; 1.12.8;
Sprinkle some const

Declare the second arg of process_write_{fp,}regs() to be const.
This permits sh5 to continue to re-use those functions in cpu_setmcontext()
with the recent change to Makefile.kern.inc (revision 1.62).

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

__KERNEL_RCSID()

branches: 1.8.2;
Merge the nathanw_sa branch.

branches: 1.7.12;
Make sure to reset the FP queue when loading new values into FP registers.

branches: 1.6.24; 1.6.30;
Add prototypes and fix bugs:
- softclock was called with extra argument.
- missing %x formats in printf's
- kgdb_copy called with only two arguments.

Fix conf.c so that it used the _conf.h files from other places instead of
rolling its own.

copyright/Id cleanup

changes for the new sys_process.c, and some cleanup

branches: 1.3.2;
protect psr bits

[GS]ETREG ptrace functions.

empty file for pk to add things to :-)