Changes in directory llvm/lib/ExecutionEngine:
ExecutionEngine.cpp updated: 1.74 -> 1.75
---
Log message:
Add a helper method for running static ctors/dtors in the module.
---
Diffs of the changes: (+31 -2)
ExecutionEngine.cpp | 33 +++++++++++++++++++++++++++++++--
1 files changed, 31 insertions(+), 2 deletions(-)
Index: llvm/lib/ExecutionEngine/ExecutionEngine.cpp
diff -u llvm/lib/ExecutionEngine/ExecutionEngine.cpp:1.74
llvm/lib/ExecutionEngine/ExecutionEngine.cpp:1.75
--- llvm/lib/ExecutionEngine/ExecutionEngine.cpp:1.74 Mon Feb 6 23:11:57 2006
+++ llvm/lib/ExecutionEngine/ExecutionEngine.cpp Wed Mar 8 12:42:46 2006
@@ -95,6 +95,37 @@
return Result;
}
+
+/// runStaticConstructorsDestructors - This method is used to execute all of
+/// the static constructors or destructors for a module, depending on the
+/// value of isDtors.
+void ExecutionEngine::runStaticConstructorsDestructors(bool isDtors) {
+ const char *Name = isDtors ? "llvm.global_dtors" : "llvm.global_ctors";
+ GlobalVariable *GV = CurMod.getNamedGlobal(Name);
+ if (!GV || GV->isExternal() || !GV->hasInternalLinkage()) return;
+
+ // Should be an array of '{ int, void ()* }' structs. The first value is the
+ // init priority, which we ignore.
+ ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
+ if (!InitList) return;
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
+ if (ConstantStruct *CS =
dyn_cast<ConstantStruct>(InitList->getOperand(i))){
+ if (CS->getNumOperands() != 2) return; // Not array of 2-element
structs.
+
+ Constant *FP = CS->getOperand(1);
+ if (FP->isNullValue())
+ return; // Found a null terminator, exit.
+
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
+ if (CE->getOpcode() == Instruction::Cast)
+ FP = CE->getOperand(0);
+ if (Function *F = dyn_cast<Function>(FP)) {
+ // Execute the ctor/dtor function!
+ runFunction(F, std::vector<GenericValue>());
+ }
+ }
+}
+
/// runFunctionAsMain - This is a helper function which wraps runFunction to
/// handle the common task of starting up main with the specified argc, argv,
/// and envp parameters.
@@ -122,8 +153,6 @@
return runFunction(Fn, GVArgs).IntVal;
}
-
-
/// If possible, create a JIT, unless the caller specifically requests an
/// Interpreter or there's an error. If even an Interpreter cannot be created,
/// NULL is returned.
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