Using 32bit types like uint32_t for pointers creates issues on 64 bit
architectures like AArch64. Replaced occurrences of these with
uintptr_t, which will work for both 32 and 64 bit architectures. Added
hex_decode_addr function to rtems-debugger.
- Fix destorying the target and thread parts.
- Fix the ARM backend to support Cortex-A8 and ARM mode code.
- Use the DBGDSCR interrupt mask when single stepping.
- Use the DBGDSCR method of entry to debug mode to filter the
execptions.
- Add support for BSPs to control the ARM backend.
- Add `printk` support to aid multi-core debugging.
- Add lock trace to aid lock debugging.
- Fixes to gcc-7.1 warnings.
- Fixes from ticket #2879.
- Add verbose command controls.
- Change using the RTEMS sys/lock.h API to manage exception threads.
- ARM hardware breakpoint fixes. Support for SMP stepping
is not implemented, this requires use of the context id
register.
Closes#2879.
