diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp index 971ef90..a0b87f7 100644 --- a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp +++ b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp @@ -45,6 +45,10 @@ public: private: void addSPOperands(MCInst &MI) const; + DecodeStatus getInstruction48(MCInst &Instr, uint64_t &Size, + ArrayRef<uint8_t> Bytes, uint64_t Address, + raw_ostream &CStream) const; + DecodeStatus getInstruction32(MCInst &Instr, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, raw_ostream &CStream) const; @@ -745,6 +749,27 @@ DecodeStatus RISCVDisassembler::getInstruction16(MCInst &MI, uint64_t &Size, return MCDisassembler::Fail; } +DecodeStatus RISCVDisassembler::getInstruction48(MCInst &MI, uint64_t &Size, + ArrayRef<uint8_t> Bytes, + uint64_t Address, + raw_ostream &CS) const { + if (Bytes.size() < 6) { + Size = 0; + return MCDisassembler::Fail; + } + Size = 6; + + uint64_t Insn = 0; + for (size_t i = Size; i-- != 0;) { + Insn += (static_cast<uint64_t>(Bytes[i]) << 8 * i); + } + TRY_TO_DECODE_FEATURE( + RISCV::FeatureVendorXqcilo, DecoderTableXqcilo48, + "Qualcomm uC Large Offset Load Store custom 48bit opcode table"); + + return MCDisassembler::Fail; +} + DecodeStatus RISCVDisassembler::getInstruction(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, @@ -760,8 +785,7 @@ DecodeStatus RISCVDisassembler::getInstruction(MCInst &MI, uint64_t &Size, // 48-bit instructions are encoded as 0bxx011111. if ((Bytes[0] & 0b11'1111) == 0b01'1111) { - Size = Bytes.size() >= 6 ? 6 : 0; - return MCDisassembler::Fail; + return getInstruction48(MI, Size, Bytes, Address, CS); } // 64-bit instructions are encoded as 0x0111111. |