From fd652df8b36a9d3e6b09ae2b9f7bcb07e88fdfaa Mon Sep 17 00:00:00 2001 From: Jiangning Liu Date: Thu, 2 Aug 2012 08:29:50 +0000 Subject: Fix #13035, a bug around Thumb instruction LDRD/STRD with negative #0 offset index issue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161162 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'lib/Target/ARM/Disassembler/ARMDisassembler.cpp') diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 6f36dcc1ef..e47bf66e3a 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -3151,9 +3151,14 @@ static DecodeStatus DecodeT2LoadShift(MCInst &Inst, unsigned Insn, static DecodeStatus DecodeT2Imm8S4(MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder) { - int imm = Val & 0xFF; - if (!(Val & 0x100)) imm *= -1; - Inst.addOperand(MCOperand::CreateImm(imm << 2)); + if (Val == 0) + Inst.addOperand(MCOperand::CreateImm(INT32_MIN)); + else { + int imm = Val & 0xFF; + + if (!(Val & 0x100)) imm *= -1; + Inst.addOperand(MCOperand::CreateImm(imm << 2)); + } return MCDisassembler::Success; } -- cgit v1.2.3-18-g5258