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| author | Oliver Stannard <oliver.stannard@arm.com> | 2023-02-01 18:16:07 +0000 |
|---|---|---|
| committer | Tomas Matheson <tomas.matheson@arm.com> | 2023-12-21 14:18:33 +0000 |
| commit | 934b1099cbf14fa3f86a269dff957da8e5fb619f (patch) | |
| tree | 4cb514fade42019a530b1d687d83965b66392f38 /llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp | |
| parent | 92dc23c0e054183e8adf41aad2a2609cefc392c0 (diff) | |
| download | llvm-934b1099cbf14fa3f86a269dff957da8e5fb619f.zip llvm-934b1099cbf14fa3f86a269dff957da8e5fb619f.tar.gz llvm-934b1099cbf14fa3f86a269dff957da8e5fb619f.tar.bz2 | |
[AArch64] Add FEAT_PAuthLR assembler support
Add assembly/disassembly support for the new PAuthLR instructions
introduced in Armv9.5-A:
- AUTIASPPC/AUTIBSPPC
- PACIASPPC/PACIBSPPC
- PACNBIASPPC/PACNBIBSPPC
- RETAASPPC/RETABSPPC
- PACM
Documentation for these instructions can be found here:
https://developer.arm.com/documentation/ddi0602/2023-09/Base-Instructions/
Diffstat (limited to 'llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp b/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp index cf2d387..c8cebaa 100644 --- a/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp +++ b/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. + int64_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) { |