[lldb] Use vFlash commands when writing to target's flash memory regions
When writing an object file over gdb-remote, use the vFlashErase, vFlashWrite, and vFlashDone commands if the write address is in a flash memory region. A bare metal target may have this kind of setup.
- Update ObjectFileELF to set load addresses using physical addresses. A typical case may be a data section with a physical address in ROM and a virtual address in RAM, which should be loaded to the ROM address.
- Add support for querying the target's qXfer:memory-map, which contains information about flash memory regions, leveraging MemoryRegionInfo data structures with minor modifications
- Update ProcessGDBRemote to use vFlash commands in DoWriteMemory when the target address is in a flash region
Original discussion at http://lists.llvm.org/pipermail/lldb-dev/2018-January/013093.html
Reviewers: clayborg, labath
Reviewed By: labath
Subscribers: arichardson, emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D42145
Patch by Owen Shaw <firstname.lastname@example.org>