Add the ObjFW runtime. Patch by Jonathan Schleifer!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160102 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCGNU.cpp b/lib/CodeGen/CGObjCGNU.cpp
index 686fb05..9993f44 100644
--- a/lib/CodeGen/CGObjCGNU.cpp
+++ b/lib/CodeGen/CGObjCGNU.cpp
@@ -99,8 +99,8 @@
/// GNU Objective-C runtime code generation. This class implements the parts of
-/// Objective-C support that are specific to the GNU family of runtimes (GCC and
-/// GNUstep).
+/// Objective-C support that are specific to the GNU family of runtimes (GCC,
+/// GNUstep and ObjFW).
class CGObjCGNU : public CGObjCRuntime {
protected:
/// The LLVM module into which output is inserted
@@ -397,11 +397,11 @@
const ObjCIvarDecl *Ivar);
/// Emits a reference to a class. This allows the linker to object if there
/// is no class of the matching name.
+protected:
void EmitClassRef(const std::string &className);
/// Emits a pointer to the named class
- llvm::Value *GetClassNamed(CGBuilderTy &Builder, const std::string &Name,
- bool isWeak);
-protected:
+ virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder,
+ const std::string &Name, bool isWeak);
/// Looks up the method for sending a message to the specified object. This
/// mechanism differs between the GCC and GNU runtimes, so this method must be
/// overridden in subclasses.
@@ -653,6 +653,30 @@
}
};
+/// Class used when targeting the ObjFW runtime.
+class CGObjCObjFW: public CGObjCGCC {
+ virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder,
+ const std::string &Name, bool isWeak) {
+ if (isWeak)
+ return CGObjCGNU::GetClassNamed(Builder, Name, isWeak);
+
+ EmitClassRef(Name);
+
+ std::string SymbolName = "_OBJC_CLASS_" + Name;
+
+ llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(SymbolName);
+
+ if (!ClassSymbol)
+ ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false,
+ llvm::GlobalValue::ExternalLinkage,
+ 0, SymbolName);
+
+ return ClassSymbol;
+ }
+
+public:
+ CGObjCObjFW(CodeGenModule &Mod): CGObjCGCC(Mod) {}
+};
} // end anonymous namespace
@@ -2672,6 +2696,9 @@
case ObjCRuntime::GCC:
return new CGObjCGCC(CGM);
+ case ObjCRuntime::ObjFW:
+ return new CGObjCObjFW(CGM);
+
case ObjCRuntime::FragileMacOSX:
case ObjCRuntime::MacOSX:
case ObjCRuntime::iOS: