54981bb75d
This teaches ProcessGDBRemote to look for "flags" nodes in the target XML that tell you what fields a register has. https://sourceware.org/gdb/onlinedocs/gdb/Target-Description-Format.html It will check for various invalid inputs like: * Flags nodes with 0 fields in them. * Start or end being > the register size. * Fields that overlap. * Required properties not being present (e.g. no name). * Flag sets being redefined. If anything untoward is found, we'll just drop the field or the flag set altogether. Register fields are a "nice to have" so LLDB shouldn't be crashing because of them, instead just log anything we throw away. So the user can fix their XML/file a bug with their vendor. Once that is done it will sort the fields and pass them to the RegisterFields class I added previously. There is no way to see these fields yet, so tests for this code will come later when the formatting code is added. The fields are stored in a map of unique pointers on the ProcessGDBRemote class. It will give out raw pointers on the assumption that the GDB process lives longer than the users of those pointers do. Which means RegisterInfo is still a trivial struct but we are properly destroying the fields when the GDB process ends. We can't store the fields directly in the map because adding new items may cause its storage to be reallocated, which would invalidate pointers we've already given out. Reviewed By: jasonmolenda, JDevlieghere Differential Revision: https://reviews.llvm.org/D145574 |
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| CONTRIBUTING.md | ||
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| SECURITY.md | ||
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
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