From 7f739bee261debdf56bd89ac922b57eca53e91dc Mon Sep 17 00:00:00 2001 From: Jim Grosbach Date: Mon, 19 Sep 2011 22:21:13 +0000 Subject: Thumb2 assembly parsing and encoding for TBB/TBH. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140078 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (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 6cbe863d0e..dea38bf00a 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -287,6 +287,8 @@ static DecodeStatus DecodeThumbBLXOffset(llvm::MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2AddrModeImm12(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); +static DecodeStatus DecodeThumbTableBranch(llvm::MCInst &Inst, unsigned Val, + uint64_t Address, const void *Decoder); static DecodeStatus DecodeThumb2BCCInstruction(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2SOImm(llvm::MCInst &Inst, unsigned Val, @@ -2898,6 +2900,22 @@ static DecodeStatus DecodeCoprocessor(llvm::MCInst &Inst, unsigned Val, return MCDisassembler::Success; } +static DecodeStatus +DecodeThumbTableBranch(llvm::MCInst &Inst, unsigned Insn, + uint64_t Address, const void *Decoder) { + DecodeStatus S = MCDisassembler::Success; + + unsigned Rn = fieldFromInstruction32(Insn, 16, 4); + unsigned Rm = fieldFromInstruction32(Insn, 0, 4); + + if (Rn == ARM::SP) S = MCDisassembler::SoftFail; + if (!Check(S, DecodeGPRRegisterClass(Inst, Rn, Address, Decoder))) + return MCDisassembler::Fail; + if (!Check(S, DecoderGPRRegisterClass(Inst, Rm, Address, Decoder))) + return MCDisassembler::Fail; + return S; +} + static DecodeStatus DecodeThumb2BCCInstruction(llvm::MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder) { -- cgit v1.2.3-18-g5258