forked from OSchip/llvm-project
5c45c541a2
Most of the changes are to the FuncUnwinders class -- as we've added more types of unwind information, the way this class was written was making it a mess to maintain. Instead of trying to keep one "non-call site" unwind plan and one "call site" unwind plan, track all the different types of unwind plans we can possibly retrieve for each function and have the call-site/non-call-site accessor methods retrieve those. Add a real "fast unwind plan" for x86_64 / i386 -- when doing an unwind through a function, this only has to read the first 4 bytes to tell if the function has a standard prologue sequence. If so, we can use the architecture default unwind plan to backtrace through this function. If we try to retrieve the save location for other registers later on, a real unwind plan will be used. This one is just for doing fast backtraces. Change the compact unwind plan importer to fill in the valid address range it is valid for. Compact unwind, in theory, may have multiple entries for a single function. The FuncUnwinders rewrite includes the start of supporting this correctly. In practice compact unwind encodings are used for the entire range of the function today -- in fact, sometimes the same encoding is used for multiple functions that have the same unwind rules. But I want to handle a single function that has multiple different compact unwind UnwindPlans eventually. llvm-svn: 224689 |
||
|---|---|---|
| .. | ||
| lldb | ||
| Makefile | ||