[PDB] Support PDB-backed expressions evaluation (+ fix stuck test)
Summary:
This patch contains several small fixes, which makes it possible to evaluate
expressions on Windows using information from PDB. The changes are:
- several sanitize checks;
- make IRExecutionUnit::MemoryManager::getSymbolAddress to not return a magic
value on a failure, because callers wait 0 in this case;
- entry point required to be a file address, not RVA, in the ObjectFilePECOFF;
- do not crash on a debuggee second chance exception - it may be an expression
evaluation crash. Also fix detection of "crushed" threads in tests;
- create parameter declarations for functions in AST to make it possible to call
debugee functions from expressions;
- relax name searching rules for variables, functions, namespaces and types. Now
it works just like in the DWARF plugin;
- fix endless recursion in SymbolFilePDB::ParseCompileUnitFunctionForPDBFunc.
Reviewers: zturner, asmith, stella.stamenova
Reviewed By: stella.stamenova, asmith
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D53759
llvm-svn: 348136
diff --git a/lldb/lit/SymbolFile/PDB/Inputs/ExpressionsTest2.script b/lldb/lit/SymbolFile/PDB/Inputs/ExpressionsTest2.script
new file mode 100644
index 0000000..b19240b
--- /dev/null
+++ b/lldb/lit/SymbolFile/PDB/Inputs/ExpressionsTest2.script
@@ -0,0 +1,2 @@
+print sum(buf0, result - 28)
+print sum(buf1 + 3, 3)