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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#include "llvm/Linker/Linker.h"
#include "rustllvm.h"
using namespace llvm;
struct RustLinker {
Linker L;
LLVMContext &Ctx;
RustLinker(Module &M) :
L(M),
Ctx(M.getContext())
{}
};
extern "C" RustLinker*
LLVMRustLinkerNew(LLVMModuleRef DstRef) {
Module *Dst = unwrap(DstRef);
auto Ret = llvm::make_unique<RustLinker>(*Dst);
return Ret.release();
}
extern "C" void
LLVMRustLinkerFree(RustLinker *L) {
delete L;
}
extern "C" bool
LLVMRustLinkerAdd(RustLinker *L, char *BC, size_t Len) {
std::unique_ptr<MemoryBuffer> Buf =
MemoryBuffer::getMemBufferCopy(StringRef(BC, Len));
#if LLVM_VERSION_GE(4, 0)
Expected<std::unique_ptr<Module>> SrcOrError =
llvm::getLazyBitcodeModule(Buf->getMemBufferRef(), L->Ctx);
if (!SrcOrError) {
LLVMRustSetLastError(toString(SrcOrError.takeError()).c_str());
return false;
}
auto Src = std::move(*SrcOrError);
#else
ErrorOr<std::unique_ptr<Module>> Src =
llvm::getLazyBitcodeModule(std::move(Buf), L->Ctx);
if (!Src) {
LLVMRustSetLastError(Src.getError().message().c_str());
return false;
}
#endif
#if LLVM_VERSION_GE(4, 0)
if (L->L.linkInModule(std::move(Src))) {
#else
if (L->L.linkInModule(std::move(Src.get()))) {
#endif
LLVMRustSetLastError("");
return false;
}
return true;
}
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