| //===- 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 { |
| const char *insnSyntax; |
| uint32_t insnMask; |
| uint32_t insnCmpMask; |
| uint32_t insnBitMask; |
| bool isDuplex; |
| } Instruction; |
| |
| #include "HexagonV4Encodings.h" |
| |
| #define FINDV4BITMASK(INSN) \ |
| findBitMask((uint32_t) * ((llvm::support::ulittle32_t *) INSN), \ |
| insn_encodings_v4, \ |
| sizeof(insn_encodings_v4) / sizeof(Instruction)) |
| |
| /// \brief finds the scatter Bits that need to be used to apply relocations |
| 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 |