diff options
Diffstat (limited to 'contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp b/contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp index ee0ae08e192f..7674d9e354fa 100644 --- a/contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp +++ b/contrib/llvm-project/llvm/lib/Target/AVR/Disassembler/AVRDisassembler.cpp @@ -123,6 +123,9 @@ static DecodeStatus decodeFMUL2RdRr(MCInst &Inst, unsigned Insn, static DecodeStatus decodeMemri(MCInst &Inst, unsigned Insn, uint64_t Address, const MCDisassembler *Decoder); +static DecodeStatus decodeFBRk(MCInst &Inst, unsigned Insn, uint64_t Address, + const MCDisassembler *Decoder); + static DecodeStatus decodeLoadStore(MCInst &Inst, unsigned Insn, uint64_t Address, const MCDisassembler *Decoder); @@ -265,6 +268,25 @@ static DecodeStatus decodeMemri(MCInst &Inst, unsigned Insn, uint64_t Address, return MCDisassembler::Success; } +static DecodeStatus decodeFBRk(MCInst &Inst, unsigned Insn, uint64_t Address, + const MCDisassembler *Decoder) { + // Decode the opcode. + switch (Insn & 0xf000) { + case 0xc000: + Inst.setOpcode(AVR::RJMPk); + break; + case 0xd000: + Inst.setOpcode(AVR::RCALLk); + break; + default: // Unknown relative branch instruction. + return MCDisassembler::Fail; + } + // Decode the relative offset. + int16_t Offset = ((int16_t)((Insn & 0xfff) << 4)) >> 3; + Inst.addOperand(MCOperand::createImm(Offset)); + return MCDisassembler::Success; +} + static DecodeStatus decodeLoadStore(MCInst &Inst, unsigned Insn, uint64_t Address, const MCDisassembler *Decoder) { @@ -275,7 +297,7 @@ static DecodeStatus decodeLoadStore(MCInst &Inst, unsigned Insn, if ((Insn & 0xf000) == 0x8000) { unsigned RegBase = (Insn & 0x8) ? AVR::R29R28 : AVR::R31R30; unsigned Offset = Insn & 7; // We need not consider offset > 7. - if ((Insn & 0x200) == 0) { // Decode LDD. + if ((Insn & 0x200) == 0) { // Decode LDD. Inst.setOpcode(AVR::LDDRdPtrQ); Inst.addOperand(MCOperand::createReg(RegVal)); Inst.addOperand(MCOperand::createReg(RegBase)); @@ -425,6 +447,14 @@ DecodeStatus AVRDisassembler::getInstruction(MCInst &Instr, uint64_t &Size, if (Result == MCDisassembler::Fail) return MCDisassembler::Fail; + // Try to decode AVRTiny instructions. + if (STI.getFeatureBits()[AVR::FeatureTinyEncoding]) { + Result = decodeInstruction(DecoderTableAVRTiny16, Instr, Insn, Address, + this, STI); + if (Result != MCDisassembler::Fail) + return Result; + } + // Try to auto-decode a 16-bit instruction. Result = decodeInstruction(getDecoderTable(Size), Instr, Insn, Address, this, STI); |