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//===- 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_RELOCATION_FUNCTIONS_H
#define LLD_READER_WRITER_ELF_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_RELOCATION_FUNCTIONS_H
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