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Diffstat (limited to 'llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp')
-rw-r--r--llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp b/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp
index 75f963b5448a..4d98dc7341d0 100644
--- a/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp
+++ b/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp
@@ -126,6 +126,9 @@ static DecodeStatus DecodeGPR32RegisterClass(MCInst &Inst, unsigned RegNo,
static DecodeStatus decodeMemoryOpValue(MCInst &Inst, unsigned Insn,
uint64_t Address, const void *Decoder) {
unsigned Register = (Insn >> 16) & 0xf;
+ if (Register > 11)
+ return MCDisassembler::Fail;
+
Inst.addOperand(MCOperand::createReg(GPRDecoderTable[Register]));
unsigned Offset = (Insn & 0xffff);
Inst.addOperand(MCOperand::createImm(SignExtend32<16>(Offset)));