[lldb][Windows] Add support for the ARM64 PE format in PECallFrameInfo decoding
Open
lldb
platform:windows
- Dominant language
- LLVM
- Stars
- 40.5k
- Forks
- 18.7k
- PR merge metrics
- PR metrics pending
Description
`PECallFrameInfo` can only decode the `x86_64` `UNWIND_INFO/UWOP_*` format. `ARM64 PE` uses a different .xdata encoding, so there is no call frame info there and unwinding falls back to prologue analysis plus the x29 frame pointer chain.
This is blocking recognizer tests on Windows ARM64.
Contributor guide
Research direction
Locate the PECallFrameInfo decoder and read the existing x86_64 UNWIND_INFO/UWOP_* path first. Then study the ARM64 PE .xdata encoding and run the recognizer tests on Windows ARM64. Done means ARM64 PE call frame information decodes successfully instead of relying on prologue analysis and the x29 frame pointer chain.
Written by the indexing model from the issue text.
Assessment
- Domain
- devtools, operating-systems
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100