diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp index 7bbb371a757..a2a6ffcfdbc 100644 --- a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp +++ b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp @@ -257,11 +257,19 @@ DecodeStatus RISCVDisassembler::getInstruction(MCInst &MI, uint64_t &Size, // It's a 32 bit instruction if bit 0 and 1 are 1. if ((Bytes[0] & 0x3) == 0x3) { + if (Bytes.size() < 4) { + Size = 0; + return MCDisassembler::Fail; + } Insn = support::endian::read32le(Bytes.data()); LLVM_DEBUG(dbgs() << "Trying RISCV32 table :\n"); Result = decodeInstruction(DecoderTable32, MI, Insn, Address, this, STI); Size = 4; } else { + if (Bytes.size() < 2) { + Size = 0; + return MCDisassembler::Fail; + } Insn = support::endian::read16le(Bytes.data()); if (!STI.getFeatureBits()[RISCV::Feature64Bit]) { |
