| //===--- RuntimeFnWrappersGen.h - LLVM IR Generation for runtime functions ===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Helper functions providing the LLVM IR generation for runtime entry points. |
| // |
| //===----------------------------------------------------------------------===// |
| #ifndef SWIFT_RUNTIME_RUNTIMEFNWRAPPERSGEN_H |
| #define SWIFT_RUNTIME_RUNTIMEFNWRAPPERSGEN_H |
| |
| #include "llvm/IR/Module.h" |
| #include "llvm/ADT/ArrayRef.h" |
| |
| namespace swift { |
| |
| /// Generate an llvm declaration for a runtime entry with a |
| /// given name, return types, argument types, attributes and |
| /// a calling convention. |
| llvm::Constant *getRuntimeFn(llvm::Module &Module, |
| llvm::Constant *&cache, |
| char const *name, |
| llvm::CallingConv::ID cc, |
| llvm::ArrayRef<llvm::Type*> retTypes, |
| llvm::ArrayRef<llvm::Type*> argTypes, |
| llvm::ArrayRef<llvm::Attribute::AttrKind> attrs); |
| |
| /// Generate an llvm wrapper for a runtime entry with a |
| /// given name, return types, argument types, attributes and a |
| /// calling convention. |
| /// |
| /// Symbol is the name of a global symbol containing the |
| /// address of the runtime entry implementation. |
| /// The wrapper simply invokes a corresponding entry point |
| /// by means of an indirect call of the function currently |
| /// referenced by the symbol. |
| /// |
| /// Each wrapper has a hidden linkage and marked as ODR, so that |
| /// a linker can merge all wrappers with the same name. |
| llvm::Constant *getWrapperFn(llvm::Module &Module, llvm::Constant *&cache, |
| char const *name, char const *symbol, |
| llvm::CallingConv::ID cc, |
| llvm::ArrayRef<llvm::Type *> retTypes, |
| llvm::ArrayRef<llvm::Type *> argTypes, |
| llvm::ArrayRef<llvm::Attribute::AttrKind> attrs); |
| } /* Namespace swift */ |
| #endif |