1 files changed, 49 insertions, 0 deletions
diff --git a/lib/ReaderWriter/ELF/Hexagon/HexagonRelocationFunctions.h b/lib/ReaderWriter/ELF/Hexagon/HexagonRelocationFunctions.h
new file mode 100644
index 000000000000..2b9e25ce363b
--- /dev/null
+++ b/lib/ReaderWriter/ELF/Hexagon/HexagonRelocationFunctions.h
@@ -0,0 +1,49 @@
+//===- HexagonRelocationFunction.h ----------------------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLD_READER_WRITER_ELF_HEXAGON_HEXAGON_RELOCATION_FUNCTIONS_H
+#define LLD_READER_WRITER_ELF_HEXAGON_HEXAGON_RELOCATION_FUNCTIONS_H
+
+namespace lld {
+namespace elf {
+
+/// \brief HexagonInstruction which is used to store various values
+typedef struct {
+  uint32_t insnMask;
+  uint32_t insnCmpMask;
+  uint32_t insnBitMask;
+  bool isDuplex;
+} Instruction;
+
+#include "HexagonEncodings.h"
+
+#define FINDV4BITMASK(INSN)                                                    \
+  findBitMask((uint32_t) * ((llvm::support::ulittle32_t *) INSN),              \
+              insn_encodings,                                                  \
+              sizeof(insn_encodings) / sizeof(Instruction))
+
+/// \brief finds the scatter Bits that need to be used to apply relocations
+inline uint32_t
+findBitMask(uint32_t insn, Instruction *encodings, int32_t numInsns) {
+  for (int32_t i = 0; i < numInsns; i++) {
+    if (((insn & 0xc000) == 0) && !(encodings[i].isDuplex))
+      continue;
+
+    if (((insn & 0xc000) != 0) && (encodings[i].isDuplex))
+      continue;
+
+    if (((encodings[i].insnMask) & insn) == encodings[i].insnCmpMask)
+      return encodings[i].insnBitMask;
+  }
+  llvm_unreachable("found unknown instruction");
+}
+
+} // elf
+} // lld
+
+#endif // LLD_READER_WRITER_ELF_HEXAGON_HEXAGON_RELOCATION_FUNCTIONS_H