- Introduce KdpScreenAcquire() / KdpScreenRelease() helpers that allow
to correctly acquire or release the screen when using INBV for
"Screen-Mode" debugging.
- Introduce KdpAcquireLock() / KdpReleaseLock() helpers so as to reduce
the copy-pasted code required when acquiring spin-locks in the KD debug
logger functions.
- Close the opened KdpLogFileHandle file in the KdpInitDebugLog() logger
in case we failed to create the logger writer thread.
Also use explicit kernel-mode handle when opening the log file.
- static-ify some local variables, remove few hardcoded values, and
minor formatting.
- Correctly define the INIT_FUNCTION's.
- Import KdpCopyMemoryChunks() from kd64/kdapi.c, and re-implement
KdbpSafeReadMemory() and KdbpSafeWriteMemory() around it.
Note that these functions read virtual memory and are equivalent of
the kd64 KdpReadVirtualMemory() and KdpWriteVirtualMemory()
respectively.
- Get rid of the KdpEnableSafeMem() call in KdInitSystem().
- Adjust kd gdbstub.c wrapper in accordance.
