1 files changed, 0 insertions, 222 deletions
diff --git a/contrib/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp b/contrib/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp
deleted file mode 100644
index c845524ad657..000000000000
--- a/contrib/llvm/lib/Target/BPF/Disassembler/BPFDisassembler.cpp
+++ /dev/null
@@ -1,222 +0,0 @@
-//===- BPFDisassembler.cpp - Disassembler for BPF ---------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is part of the BPF Disassembler.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/BPFMCTargetDesc.h"
-#include "TargetInfo/BPFTargetInfo.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCDisassembler/MCDisassembler.h"
-#include "llvm/MC/MCFixedLenDisassembler.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/TargetRegistry.h"
-#include <cstdint>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "bpf-disassembler"
-
-typedef MCDisassembler::DecodeStatus DecodeStatus;
-
-namespace {
-
-/// A disassembler class for BPF.
-class BPFDisassembler : public MCDisassembler {
-public:
-  enum BPF_CLASS {
-    BPF_LD = 0x0,
-    BPF_LDX = 0x1,
-    BPF_ST = 0x2,
-    BPF_STX = 0x3,
-    BPF_ALU = 0x4,
-    BPF_JMP = 0x5,
-    BPF_JMP32 = 0x6,
-    BPF_ALU64 = 0x7
-  };
-
-  enum BPF_SIZE {
-    BPF_W = 0x0,
-    BPF_H = 0x1,
-    BPF_B = 0x2,
-    BPF_DW = 0x3
-  };
-
-  enum BPF_MODE {
-    BPF_IMM = 0x0,
-    BPF_ABS = 0x1,
-    BPF_IND = 0x2,
-    BPF_MEM = 0x3,
-    BPF_LEN = 0x4,
-    BPF_MSH = 0x5,
-    BPF_XADD = 0x6
-  };
-
-  BPFDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx)
-      : MCDisassembler(STI, Ctx) {}
-  ~BPFDisassembler() override = default;
-
-  DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
-                              ArrayRef<uint8_t> Bytes, uint64_t Address,
-                              raw_ostream &VStream,
-                              raw_ostream &CStream) const override;
-
-  uint8_t getInstClass(uint64_t Inst) const { return (Inst >> 56) & 0x7; };
-  uint8_t getInstSize(uint64_t Inst) const { return (Inst >> 59) & 0x3; };
-  uint8_t getInstMode(uint64_t Inst) const { return (Inst >> 61) & 0x7; };
-};
-
-} // end anonymous namespace
-
-static MCDisassembler *createBPFDisassembler(const Target &T,
-                                             const MCSubtargetInfo &STI,
-                                             MCContext &Ctx) {
-  return new BPFDisassembler(STI, Ctx);
-}
-
-
-extern "C" void LLVMInitializeBPFDisassembler() {
-  // Register the disassembler.
-  TargetRegistry::RegisterMCDisassembler(getTheBPFTarget(),
-                                         createBPFDisassembler);
-  TargetRegistry::RegisterMCDisassembler(getTheBPFleTarget(),
-                                         createBPFDisassembler);
-  TargetRegistry::RegisterMCDisassembler(getTheBPFbeTarget(),
-                                         createBPFDisassembler);
-}
-
-static const unsigned GPRDecoderTable[] = {
-    BPF::R0,  BPF::R1,  BPF::R2,  BPF::R3,  BPF::R4,  BPF::R5,
-    BPF::R6,  BPF::R7,  BPF::R8,  BPF::R9,  BPF::R10, BPF::R11};
-
-static DecodeStatus DecodeGPRRegisterClass(MCInst &Inst, unsigned RegNo,
-                                           uint64_t /*Address*/,
-                                           const void * /*Decoder*/) {
-  if (RegNo > 11)
-    return MCDisassembler::Fail;
-
-  unsigned Reg = GPRDecoderTable[RegNo];
-  Inst.addOperand(MCOperand::createReg(Reg));
-  return MCDisassembler::Success;
-}
-
-static const unsigned GPR32DecoderTable[] = {
-    BPF::W0,  BPF::W1,  BPF::W2,  BPF::W3,  BPF::W4,  BPF::W5,
-    BPF::W6,  BPF::W7,  BPF::W8,  BPF::W9,  BPF::W10, BPF::W11};
-
-static DecodeStatus DecodeGPR32RegisterClass(MCInst &Inst, unsigned RegNo,
-                                             uint64_t /*Address*/,
-                                             const void * /*Decoder*/) {
-  if (RegNo > 11)
-    return MCDisassembler::Fail;
-
-  unsigned Reg = GPR32DecoderTable[RegNo];
-  Inst.addOperand(MCOperand::createReg(Reg));
-  return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeMemoryOpValue(MCInst &Inst, unsigned Insn,
-                                        uint64_t Address, const void *Decoder) {
-  unsigned Register = (Insn >> 16) & 0xf;
-  Inst.addOperand(MCOperand::createReg(GPRDecoderTable[Register]));
-  unsigned Offset = (Insn & 0xffff);
-  Inst.addOperand(MCOperand::createImm(SignExtend32<16>(Offset)));
-
-  return MCDisassembler::Success;
-}
-
-#include "BPFGenDisassemblerTables.inc"
-static DecodeStatus readInstruction64(ArrayRef<uint8_t> Bytes, uint64_t Address,
-                                      uint64_t &Size, uint64_t &Insn,
-                                      bool IsLittleEndian) {
-  uint64_t Lo, Hi;
-
-  if (Bytes.size() < 8) {
-    Size = 0;
-    return MCDisassembler::Fail;
-  }
-
-  Size = 8;
-  if (IsLittleEndian) {
-    Hi = (Bytes[0] << 24) | (Bytes[1] << 16) | (Bytes[2] << 0) | (Bytes[3] << 8);
-    Lo = (Bytes[4] << 0) | (Bytes[5] << 8) | (Bytes[6] << 16) | (Bytes[7] << 24);
-  } else {
-    Hi = (Bytes[0] << 24) | ((Bytes[1] & 0x0F) << 20) | ((Bytes[1] & 0xF0) << 12) |
-         (Bytes[2] << 8) | (Bytes[3] << 0);
-    Lo = (Bytes[4] << 24) | (Bytes[5] << 16) | (Bytes[6] << 8) | (Bytes[7] << 0);
-  }
-  Insn = Make_64(Hi, Lo);
-
-  return MCDisassembler::Success;
-}
-
-DecodeStatus BPFDisassembler::getInstruction(MCInst &Instr, uint64_t &Size,
-                                             ArrayRef<uint8_t> Bytes,
-                                             uint64_t Address,
-                                             raw_ostream &VStream,
-                                             raw_ostream &CStream) const {
-  bool IsLittleEndian = getContext().getAsmInfo()->isLittleEndian();
-  uint64_t Insn, Hi;
-  DecodeStatus Result;
-
-  Result = readInstruction64(Bytes, Address, Size, Insn, IsLittleEndian);
-  if (Result == MCDisassembler::Fail) return MCDisassembler::Fail;
-
-  uint8_t InstClass = getInstClass(Insn);
-  uint8_t InstMode = getInstMode(Insn);
-  if ((InstClass == BPF_LDX || InstClass == BPF_STX) &&
-      getInstSize(Insn) != BPF_DW &&
-      (InstMode == BPF_MEM || InstMode == BPF_XADD) &&
-      STI.getFeatureBits()[BPF::ALU32])
-    Result = decodeInstruction(DecoderTableBPFALU3264, Instr, Insn, Address,
-                               this, STI);
-  else
-    Result = decodeInstruction(DecoderTableBPF64, Instr, Insn, Address, this,
-                               STI);
-
-  if (Result == MCDisassembler::Fail) return MCDisassembler::Fail;
-
-  switch (Instr.getOpcode()) {
-  case BPF::LD_imm64:
-  case BPF::LD_pseudo: {
-    if (Bytes.size() < 16) {
-      Size = 0;
-      return MCDisassembler::Fail;
-    }
-    Size = 16;
-    if (IsLittleEndian)
-      Hi = (Bytes[12] << 0) | (Bytes[13] << 8) | (Bytes[14] << 16) | (Bytes[15] << 24);
-    else
-      Hi = (Bytes[12] << 24) | (Bytes[13] << 16) | (Bytes[14] << 8) | (Bytes[15] << 0);
-    auto& Op = Instr.getOperand(1);
-    Op.setImm(Make_64(Hi, Op.getImm()));
-    break;
-  }
-  case BPF::LD_ABS_B:
-  case BPF::LD_ABS_H:
-  case BPF::LD_ABS_W:
-  case BPF::LD_IND_B:
-  case BPF::LD_IND_H:
-  case BPF::LD_IND_W: {
-    auto Op = Instr.getOperand(0);
-    Instr.clear();
-    Instr.addOperand(MCOperand::createReg(BPF::R6));
-    Instr.addOperand(Op);
-    break;
-  }
-  }
-
-  return Result;
-}
-
-typedef DecodeStatus (*DecodeFunc)(MCInst &MI, unsigned insn, uint64_t Address,
-                                   const void *Decoder);