1 files changed, 59 insertions, 0 deletions
diff --git a/lld/ELF/Arch/AVR.cpp b/lld/ELF/Arch/AVR.cpp
new file mode 100644
index 00000000000..ebc7616e0b3
--- /dev/null
+++ b/lld/ELF/Arch/AVR.cpp
@@ -0,0 +1,59 @@
+//===- AVR.cpp ------------------------------------------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Error.h"
+#include "InputFiles.h"
+#include "Memory.h"
+#include "Symbols.h"
+#include "Target.h"
+#include "llvm/Object/ELF.h"
+#include "llvm/Support/Endian.h"
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::support::endian;
+using namespace llvm::ELF;
+using namespace lld;
+using namespace lld::elf;
+
+namespace {
+class AVR final : public TargetInfo {
+public:
+  RelExpr getRelExpr(uint32_t Type, const SymbolBody &S,
+                     const uint8_t *Loc) const override;
+  void relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const override;
+};
+} // namespace
+
+RelExpr AVR::getRelExpr(uint32_t Type, const SymbolBody &S,
+                        const uint8_t *Loc) const {
+  switch (Type) {
+  case R_AVR_CALL:
+    return R_ABS;
+  default:
+    error(toString(S.File) + ": unknown relocation type: " + toString(Type));
+    return R_HINT;
+  }
+}
+
+void AVR::relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const {
+  switch (Type) {
+  case R_AVR_CALL: {
+    uint16_t Hi = Val >> 17;
+    uint16_t Lo = Val >> 1;
+    write16le(Loc, read16le(Loc) | ((Hi >> 1) << 4) | (Hi & 1));
+    write16le(Loc + 2, Lo);
+    break;
+  }
+  default:
+    error(getErrorLocation(Loc) + "unrecognized reloc " + toString(Type));
+  }
+}
+
+TargetInfo *elf::createAVRTargetInfo() { return make<AVR>(); }