This is will make debugging earier if this does happen, rather than
dereferencing the null pointer (or passing it to memcpy, or worse).
blackmagic PR #475
* Reference latest version of the ARM specification
* ROM tables - more debug information, including printing SYSMEM bit
* MEM-AP - reject when Debug Base Address entry is not
present/invalid. These would only have errored in
adiv5_component_probe.
* Fix maximum number of entries in Class 0x1 ROM Table to 960. See ARM
IHI 0031E Table D3-1 ROM Table register summary.
* Resolve note in STM32H7 driver with explaination
blackmagic PR #474
Rom table in some devices (e.g. STM32L0/F7) can not be read while
device is in WFI. The Cortex-M SWD signature is however available.
If we know by that signature, that we have a Cortex-M, force a
probe for Cortex-M devices.
The way the const pointer was written caused at least the clang compiler
to complain about double cosnst. I am not sure if the way it was written
before it resulted in the intended "make everything const" goal. But the
way it is written now it adheres to the right to left reading rule.
