diff options
Diffstat (limited to 'contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp b/contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp index cf2d3879292d..e3220d103ae0 100644 --- a/contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp +++ b/contrib/llvm-project/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp @@ -165,6 +165,9 @@ static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm, static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); +static DecodeStatus DecodePCRelLabel16(MCInst &Inst, unsigned Imm, + uint64_t Address, + const MCDisassembler *Decoder); static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); @@ -887,6 +890,21 @@ static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm, return Success; } +static DecodeStatus DecodePCRelLabel16(MCInst &Inst, unsigned Imm, + uint64_t Addr, + const MCDisassembler *Decoder) { + // Immediate is encoded as the top 16-bits of an unsigned 18-bit negative + // PC-relative offset. + uint64_t ImmVal = Imm; + if (ImmVal < 0 || ImmVal > (1 << 16)) + return Fail; + ImmVal = -ImmVal; + if (!Decoder->tryAddingSymbolicOperand(Inst, (ImmVal << 2), Addr, + /*IsBranch=*/false, 0, 0, 4)) + Inst.addOperand(MCOperand::createImm(ImmVal)); + return Success; +} + static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { |