X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fdisas%2Flibvixl%2Fa64%2Fdecoder-a64.cc;fp=qemu%2Fdisas%2Flibvixl%2Fa64%2Fdecoder-a64.cc;h=0000000000000000000000000000000000000000;hb=437fd90c0250dee670290f9b714253671a990160;hp=82591ca30987bd956a1e43c39150bcaf209223c5;hpb=5bbd6fe9b8bab2a93e548c5a53b032d1939eec05;p=kvmfornfv.git

diff --git a/qemu/disas/libvixl/a64/decoder-a64.cc b/qemu/disas/libvixl/a64/decoder-a64.cc
deleted file mode 100644
index 82591ca30..000000000
--- a/qemu/disas/libvixl/a64/decoder-a64.cc
+++ /dev/null
@@ -1,707 +0,0 @@
-// Copyright 2013, ARM Limited
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-//   * Redistributions of source code must retain the above copyright notice,
-//     this list of conditions and the following disclaimer.
-//   * Redistributions in binary form must reproduce the above copyright notice,
-//     this list of conditions and the following disclaimer in the documentation
-//     and/or other materials provided with the distribution.
-//   * Neither the name of ARM Limited nor the names of its contributors may be
-//     used to endorse or promote products derived from this software without
-//     specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "globals.h"
-#include "utils.h"
-#include "a64/decoder-a64.h"
-
-namespace vixl {
-
-void Decoder::DecodeInstruction(const Instruction *instr) {
-  if (instr->Bits(28, 27) == 0) {
-    VisitUnallocated(instr);
-  } else {
-    switch (instr->Bits(27, 24)) {
-      // 0:   PC relative addressing.
-      case 0x0: DecodePCRelAddressing(instr); break;
-
-      // 1:   Add/sub immediate.
-      case 0x1: DecodeAddSubImmediate(instr); break;
-
-      // A:   Logical shifted register.
-      //      Add/sub with carry.
-      //      Conditional compare register.
-      //      Conditional compare immediate.
-      //      Conditional select.
-      //      Data processing 1 source.
-      //      Data processing 2 source.
-      // B:   Add/sub shifted register.
-      //      Add/sub extended register.
-      //      Data processing 3 source.
-      case 0xA:
-      case 0xB: DecodeDataProcessing(instr); break;
-
-      // 2:   Logical immediate.
-      //      Move wide immediate.
-      case 0x2: DecodeLogical(instr); break;
-
-      // 3:   Bitfield.
-      //      Extract.
-      case 0x3: DecodeBitfieldExtract(instr); break;
-
-      // 4:   Unconditional branch immediate.
-      //      Exception generation.
-      //      Compare and branch immediate.
-      // 5:   Compare and branch immediate.
-      //      Conditional branch.
-      //      System.
-      // 6,7: Unconditional branch.
-      //      Test and branch immediate.
-      case 0x4:
-      case 0x5:
-      case 0x6:
-      case 0x7: DecodeBranchSystemException(instr); break;
-
-      // 8,9: Load/store register pair post-index.
-      //      Load register literal.
-      //      Load/store register unscaled immediate.
-      //      Load/store register immediate post-index.
-      //      Load/store register immediate pre-index.
-      //      Load/store register offset.
-      //      Load/store exclusive.
-      // C,D: Load/store register pair offset.
-      //      Load/store register pair pre-index.
-      //      Load/store register unsigned immediate.
-      //      Advanced SIMD.
-      case 0x8:
-      case 0x9:
-      case 0xC:
-      case 0xD: DecodeLoadStore(instr); break;
-
-      // E:   FP fixed point conversion.
-      //      FP integer conversion.
-      //      FP data processing 1 source.
-      //      FP compare.
-      //      FP immediate.
-      //      FP data processing 2 source.
-      //      FP conditional compare.
-      //      FP conditional select.
-      //      Advanced SIMD.
-      // F:   FP data processing 3 source.
-      //      Advanced SIMD.
-      case 0xE:
-      case 0xF: DecodeFP(instr); break;
-    }
-  }
-}
-
-void Decoder::AppendVisitor(DecoderVisitor* new_visitor) {
-  visitors_.push_back(new_visitor);
-}
-
-
-void Decoder::PrependVisitor(DecoderVisitor* new_visitor) {
-  visitors_.push_front(new_visitor);
-}
-
-
-void Decoder::InsertVisitorBefore(DecoderVisitor* new_visitor,
-                                  DecoderVisitor* registered_visitor) {
-  std::list<DecoderVisitor*>::iterator it;
-  for (it = visitors_.begin(); it != visitors_.end(); it++) {
-    if (*it == registered_visitor) {
-      visitors_.insert(it, new_visitor);
-      return;
-    }
-  }
-  // We reached the end of the list. The last element must be
-  // registered_visitor.
-  VIXL_ASSERT(*it == registered_visitor);
-  visitors_.insert(it, new_visitor);
-}
-
-
-void Decoder::InsertVisitorAfter(DecoderVisitor* new_visitor,
-                                 DecoderVisitor* registered_visitor) {
-  std::list<DecoderVisitor*>::iterator it;
-  for (it = visitors_.begin(); it != visitors_.end(); it++) {
-    if (*it == registered_visitor) {
-      it++;
-      visitors_.insert(it, new_visitor);
-      return;
-    }
-  }
-  // We reached the end of the list. The last element must be
-  // registered_visitor.
-  VIXL_ASSERT(*it == registered_visitor);
-  visitors_.push_back(new_visitor);
-}
-
-
-void Decoder::RemoveVisitor(DecoderVisitor* visitor) {
-  visitors_.remove(visitor);
-}
-
-
-void Decoder::DecodePCRelAddressing(const Instruction* instr) {
-  VIXL_ASSERT(instr->Bits(27, 24) == 0x0);
-  // We know bit 28 is set, as <b28:b27> = 0 is filtered out at the top level
-  // decode.
-  VIXL_ASSERT(instr->Bit(28) == 0x1);
-  VisitPCRelAddressing(instr);
-}
-
-
-void Decoder::DecodeBranchSystemException(const Instruction* instr) {
-  VIXL_ASSERT((instr->Bits(27, 24) == 0x4) ||
-              (instr->Bits(27, 24) == 0x5) ||
-              (instr->Bits(27, 24) == 0x6) ||
-              (instr->Bits(27, 24) == 0x7) );
-
-  switch (instr->Bits(31, 29)) {
-    case 0:
-    case 4: {
-      VisitUnconditionalBranch(instr);
-      break;
-    }
-    case 1:
-    case 5: {
-      if (instr->Bit(25) == 0) {
-        VisitCompareBranch(instr);
-      } else {
-        VisitTestBranch(instr);
-      }
-      break;
-    }
-    case 2: {
-      if (instr->Bit(25) == 0) {
-        if ((instr->Bit(24) == 0x1) ||
-            (instr->Mask(0x01000010) == 0x00000010)) {
-          VisitUnallocated(instr);
-        } else {
-          VisitConditionalBranch(instr);
-        }
-      } else {
-        VisitUnallocated(instr);
-      }
-      break;
-    }
-    case 6: {
-      if (instr->Bit(25) == 0) {
-        if (instr->Bit(24) == 0) {
-          if ((instr->Bits(4, 2) != 0) ||
-              (instr->Mask(0x00E0001D) == 0x00200001) ||
-              (instr->Mask(0x00E0001D) == 0x00400001) ||
-              (instr->Mask(0x00E0001E) == 0x00200002) ||
-              (instr->Mask(0x00E0001E) == 0x00400002) ||
-              (instr->Mask(0x00E0001C) == 0x00600000) ||
-              (instr->Mask(0x00E0001C) == 0x00800000) ||
-              (instr->Mask(0x00E0001F) == 0x00A00000) ||
-              (instr->Mask(0x00C0001C) == 0x00C00000)) {
-            VisitUnallocated(instr);
-          } else {
-            VisitException(instr);
-          }
-        } else {
-          if (instr->Bits(23, 22) == 0) {
-            const Instr masked_003FF0E0 = instr->Mask(0x003FF0E0);
-            if ((instr->Bits(21, 19) == 0x4) ||
-                (masked_003FF0E0 == 0x00033000) ||
-                (masked_003FF0E0 == 0x003FF020) ||
-                (masked_003FF0E0 == 0x003FF060) ||
-                (masked_003FF0E0 == 0x003FF0E0) ||
-                (instr->Mask(0x00388000) == 0x00008000) ||
-                (instr->Mask(0x0038E000) == 0x00000000) ||
-                (instr->Mask(0x0039E000) == 0x00002000) ||
-                (instr->Mask(0x003AE000) == 0x00002000) ||
-                (instr->Mask(0x003CE000) == 0x00042000) ||
-                (instr->Mask(0x003FFFC0) == 0x000320C0) ||
-                (instr->Mask(0x003FF100) == 0x00032100) ||
-                (instr->Mask(0x003FF200) == 0x00032200) ||
-                (instr->Mask(0x003FF400) == 0x00032400) ||
-                (instr->Mask(0x003FF800) == 0x00032800) ||
-                (instr->Mask(0x0038F000) == 0x00005000) ||
-                (instr->Mask(0x0038E000) == 0x00006000)) {
-              VisitUnallocated(instr);
-            } else {
-              VisitSystem(instr);
-            }
-          } else {
-            VisitUnallocated(instr);
-          }
-        }
-      } else {
-        if ((instr->Bit(24) == 0x1) ||
-            (instr->Bits(20, 16) != 0x1F) ||
-            (instr->Bits(15, 10) != 0) ||
-            (instr->Bits(4, 0) != 0) ||
-            (instr->Bits(24, 21) == 0x3) ||
-            (instr->Bits(24, 22) == 0x3)) {
-          VisitUnallocated(instr);
-        } else {
-          VisitUnconditionalBranchToRegister(instr);
-        }
-      }
-      break;
-    }
-    case 3:
-    case 7: {
-      VisitUnallocated(instr);
-      break;
-    }
-  }
-}
-
-
-void Decoder::DecodeLoadStore(const Instruction* instr) {
-  VIXL_ASSERT((instr->Bits(27, 24) == 0x8) ||
-              (instr->Bits(27, 24) == 0x9) ||
-              (instr->Bits(27, 24) == 0xC) ||
-              (instr->Bits(27, 24) == 0xD) );
-
-  if (instr->Bit(24) == 0) {
-    if (instr->Bit(28) == 0) {
-      if (instr->Bit(29) == 0) {
-        if (instr->Bit(26) == 0) {
-          VisitLoadStoreExclusive(instr);
-        } else {
-          DecodeAdvSIMDLoadStore(instr);
-        }
-      } else {
-        if ((instr->Bits(31, 30) == 0x3) ||
-            (instr->Mask(0xC4400000) == 0x40000000)) {
-          VisitUnallocated(instr);
-        } else {
-          if (instr->Bit(23) == 0) {
-            if (instr->Mask(0xC4400000) == 0xC0400000) {
-              VisitUnallocated(instr);
-            } else {
-              VisitLoadStorePairNonTemporal(instr);
-            }
-          } else {
-            VisitLoadStorePairPostIndex(instr);
-          }
-        }
-      }
-    } else {
-      if (instr->Bit(29) == 0) {
-        if (instr->Mask(0xC4000000) == 0xC4000000) {
-          VisitUnallocated(instr);
-        } else {
-          VisitLoadLiteral(instr);
-        }
-      } else {
-        if ((instr->Mask(0x84C00000) == 0x80C00000) ||
-            (instr->Mask(0x44800000) == 0x44800000) ||
-            (instr->Mask(0x84800000) == 0x84800000)) {
-          VisitUnallocated(instr);
-        } else {
-          if (instr->Bit(21) == 0) {
-            switch (instr->Bits(11, 10)) {
-              case 0: {
-                VisitLoadStoreUnscaledOffset(instr);
-                break;
-              }
-              case 1: {
-                if (instr->Mask(0xC4C00000) == 0xC0800000) {
-                  VisitUnallocated(instr);
-                } else {
-                  VisitLoadStorePostIndex(instr);
-                }
-                break;
-              }
-              case 2: {
-                // TODO: VisitLoadStoreRegisterOffsetUnpriv.
-                VisitUnimplemented(instr);
-                break;
-              }
-              case 3: {
-                if (instr->Mask(0xC4C00000) == 0xC0800000) {
-                  VisitUnallocated(instr);
-                } else {
-                  VisitLoadStorePreIndex(instr);
-                }
-                break;
-              }
-            }
-          } else {
-            if (instr->Bits(11, 10) == 0x2) {
-              if (instr->Bit(14) == 0) {
-                VisitUnallocated(instr);
-              } else {
-                VisitLoadStoreRegisterOffset(instr);
-              }
-            } else {
-              VisitUnallocated(instr);
-            }
-          }
-        }
-      }
-    }
-  } else {
-    if (instr->Bit(28) == 0) {
-      if (instr->Bit(29) == 0) {
-        VisitUnallocated(instr);
-      } else {
-        if ((instr->Bits(31, 30) == 0x3) ||
-            (instr->Mask(0xC4400000) == 0x40000000)) {
-          VisitUnallocated(instr);
-        } else {
-          if (instr->Bit(23) == 0) {
-            VisitLoadStorePairOffset(instr);
-          } else {
-            VisitLoadStorePairPreIndex(instr);
-          }
-        }
-      }
-    } else {
-      if (instr->Bit(29) == 0) {
-        VisitUnallocated(instr);
-      } else {
-        if ((instr->Mask(0x84C00000) == 0x80C00000) ||
-            (instr->Mask(0x44800000) == 0x44800000) ||
-            (instr->Mask(0x84800000) == 0x84800000)) {
-          VisitUnallocated(instr);
-        } else {
-          VisitLoadStoreUnsignedOffset(instr);
-        }
-      }
-    }
-  }
-}
-
-
-void Decoder::DecodeLogical(const Instruction* instr) {
-  VIXL_ASSERT(instr->Bits(27, 24) == 0x2);
-
-  if (instr->Mask(0x80400000) == 0x00400000) {
-    VisitUnallocated(instr);
-  } else {
-    if (instr->Bit(23) == 0) {
-      VisitLogicalImmediate(instr);
-    } else {
-      if (instr->Bits(30, 29) == 0x1) {
-        VisitUnallocated(instr);
-      } else {
-        VisitMoveWideImmediate(instr);
-      }
-    }
-  }
-}
-
-
-void Decoder::DecodeBitfieldExtract(const Instruction* instr) {
-  VIXL_ASSERT(instr->Bits(27, 24) == 0x3);
-
-  if ((instr->Mask(0x80400000) == 0x80000000) ||
-      (instr->Mask(0x80400000) == 0x00400000) ||
-      (instr->Mask(0x80008000) == 0x00008000)) {
-    VisitUnallocated(instr);
-  } else if (instr->Bit(23) == 0) {
-    if ((instr->Mask(0x80200000) == 0x00200000) ||
-        (instr->Mask(0x60000000) == 0x60000000)) {
-      VisitUnallocated(instr);
-    } else {
-      VisitBitfield(instr);
-    }
-  } else {
-    if ((instr->Mask(0x60200000) == 0x00200000) ||
-        (instr->Mask(0x60000000) != 0x00000000)) {
-      VisitUnallocated(instr);
-    } else {
-      VisitExtract(instr);
-    }
-  }
-}
-
-
-void Decoder::DecodeAddSubImmediate(const Instruction* instr) {
-  VIXL_ASSERT(instr->Bits(27, 24) == 0x1);
-  if (instr->Bit(23) == 1) {
-    VisitUnallocated(instr);
-  } else {
-    VisitAddSubImmediate(instr);
-  }
-}
-
-
-void Decoder::DecodeDataProcessing(const Instruction* instr) {
-  VIXL_ASSERT((instr->Bits(27, 24) == 0xA) ||
-              (instr->Bits(27, 24) == 0xB));
-
-  if (instr->Bit(24) == 0) {
-    if (instr->Bit(28) == 0) {
-      if (instr->Mask(0x80008000) == 0x00008000) {
-        VisitUnallocated(instr);
-      } else {
-        VisitLogicalShifted(instr);
-      }
-    } else {
-      switch (instr->Bits(23, 21)) {
-        case 0: {
-          if (instr->Mask(0x0000FC00) != 0) {
-            VisitUnallocated(instr);
-          } else {
-            VisitAddSubWithCarry(instr);
-          }
-          break;
-        }
-        case 2: {
-          if ((instr->Bit(29) == 0) ||
-              (instr->Mask(0x00000410) != 0)) {
-            VisitUnallocated(instr);
-          } else {
-            if (instr->Bit(11) == 0) {
-              VisitConditionalCompareRegister(instr);
-            } else {
-              VisitConditionalCompareImmediate(instr);
-            }
-          }
-          break;
-        }
-        case 4: {
-          if (instr->Mask(0x20000800) != 0x00000000) {
-            VisitUnallocated(instr);
-          } else {
-            VisitConditionalSelect(instr);
-          }
-          break;
-        }
-        case 6: {
-          if (instr->Bit(29) == 0x1) {
-            VisitUnallocated(instr);
-          } else {
-            if (instr->Bit(30) == 0) {
-              if ((instr->Bit(15) == 0x1) ||
-                  (instr->Bits(15, 11) == 0) ||
-                  (instr->Bits(15, 12) == 0x1) ||
-                  (instr->Bits(15, 12) == 0x3) ||
-                  (instr->Bits(15, 13) == 0x3) ||
-                  (instr->Mask(0x8000EC00) == 0x00004C00) ||
-                  (instr->Mask(0x8000E800) == 0x80004000) ||
-                  (instr->Mask(0x8000E400) == 0x80004000)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitDataProcessing2Source(instr);
-              }
-            } else {
-              if ((instr->Bit(13) == 1) ||
-                  (instr->Bits(20, 16) != 0) ||
-                  (instr->Bits(15, 14) != 0) ||
-                  (instr->Mask(0xA01FFC00) == 0x00000C00) ||
-                  (instr->Mask(0x201FF800) == 0x00001800)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitDataProcessing1Source(instr);
-              }
-            }
-            break;
-          }
-        }
-        case 1:
-        case 3:
-        case 5:
-        case 7: VisitUnallocated(instr); break;
-      }
-    }
-  } else {
-    if (instr->Bit(28) == 0) {
-     if (instr->Bit(21) == 0) {
-        if ((instr->Bits(23, 22) == 0x3) ||
-            (instr->Mask(0x80008000) == 0x00008000)) {
-          VisitUnallocated(instr);
-        } else {
-          VisitAddSubShifted(instr);
-        }
-      } else {
-        if ((instr->Mask(0x00C00000) != 0x00000000) ||
-            (instr->Mask(0x00001400) == 0x00001400) ||
-            (instr->Mask(0x00001800) == 0x00001800)) {
-          VisitUnallocated(instr);
-        } else {
-          VisitAddSubExtended(instr);
-        }
-      }
-    } else {
-      if ((instr->Bit(30) == 0x1) ||
-          (instr->Bits(30, 29) == 0x1) ||
-          (instr->Mask(0xE0600000) == 0x00200000) ||
-          (instr->Mask(0xE0608000) == 0x00400000) ||
-          (instr->Mask(0x60608000) == 0x00408000) ||
-          (instr->Mask(0x60E00000) == 0x00E00000) ||
-          (instr->Mask(0x60E00000) == 0x00800000) ||
-          (instr->Mask(0x60E00000) == 0x00600000)) {
-        VisitUnallocated(instr);
-      } else {
-        VisitDataProcessing3Source(instr);
-      }
-    }
-  }
-}
-
-
-void Decoder::DecodeFP(const Instruction* instr) {
-  VIXL_ASSERT((instr->Bits(27, 24) == 0xE) ||
-              (instr->Bits(27, 24) == 0xF));
-
-  if (instr->Bit(28) == 0) {
-    DecodeAdvSIMDDataProcessing(instr);
-  } else {
-    if (instr->Bit(29) == 1) {
-      VisitUnallocated(instr);
-    } else {
-      if (instr->Bits(31, 30) == 0x3) {
-        VisitUnallocated(instr);
-      } else if (instr->Bits(31, 30) == 0x1) {
-        DecodeAdvSIMDDataProcessing(instr);
-      } else {
-        if (instr->Bit(24) == 0) {
-          if (instr->Bit(21) == 0) {
-            if ((instr->Bit(23) == 1) ||
-                (instr->Bit(18) == 1) ||
-                (instr->Mask(0x80008000) == 0x00000000) ||
-                (instr->Mask(0x000E0000) == 0x00000000) ||
-                (instr->Mask(0x000E0000) == 0x000A0000) ||
-                (instr->Mask(0x00160000) == 0x00000000) ||
-                (instr->Mask(0x00160000) == 0x00120000)) {
-              VisitUnallocated(instr);
-            } else {
-              VisitFPFixedPointConvert(instr);
-            }
-          } else {
-            if (instr->Bits(15, 10) == 32) {
-              VisitUnallocated(instr);
-            } else if (instr->Bits(15, 10) == 0) {
-              if ((instr->Bits(23, 22) == 0x3) ||
-                  (instr->Mask(0x000E0000) == 0x000A0000) ||
-                  (instr->Mask(0x000E0000) == 0x000C0000) ||
-                  (instr->Mask(0x00160000) == 0x00120000) ||
-                  (instr->Mask(0x00160000) == 0x00140000) ||
-                  (instr->Mask(0x20C40000) == 0x00800000) ||
-                  (instr->Mask(0x20C60000) == 0x00840000) ||
-                  (instr->Mask(0xA0C60000) == 0x80060000) ||
-                  (instr->Mask(0xA0C60000) == 0x00860000) ||
-                  (instr->Mask(0xA0C60000) == 0x00460000) ||
-                  (instr->Mask(0xA0CE0000) == 0x80860000) ||
-                  (instr->Mask(0xA0CE0000) == 0x804E0000) ||
-                  (instr->Mask(0xA0CE0000) == 0x000E0000) ||
-                  (instr->Mask(0xA0D60000) == 0x00160000) ||
-                  (instr->Mask(0xA0D60000) == 0x80560000) ||
-                  (instr->Mask(0xA0D60000) == 0x80960000)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitFPIntegerConvert(instr);
-              }
-            } else if (instr->Bits(14, 10) == 16) {
-              const Instr masked_A0DF8000 = instr->Mask(0xA0DF8000);
-              if ((instr->Mask(0x80180000) != 0) ||
-                  (masked_A0DF8000 == 0x00020000) ||
-                  (masked_A0DF8000 == 0x00030000) ||
-                  (masked_A0DF8000 == 0x00068000) ||
-                  (masked_A0DF8000 == 0x00428000) ||
-                  (masked_A0DF8000 == 0x00430000) ||
-                  (masked_A0DF8000 == 0x00468000) ||
-                  (instr->Mask(0xA0D80000) == 0x00800000) ||
-                  (instr->Mask(0xA0DE0000) == 0x00C00000) ||
-                  (instr->Mask(0xA0DF0000) == 0x00C30000) ||
-                  (instr->Mask(0xA0DC0000) == 0x00C40000)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitFPDataProcessing1Source(instr);
-              }
-            } else if (instr->Bits(13, 10) == 8) {
-              if ((instr->Bits(15, 14) != 0) ||
-                  (instr->Bits(2, 0) != 0) ||
-                  (instr->Mask(0x80800000) != 0x00000000)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitFPCompare(instr);
-              }
-            } else if (instr->Bits(12, 10) == 4) {
-              if ((instr->Bits(9, 5) != 0) ||
-                  (instr->Mask(0x80800000) != 0x00000000)) {
-                VisitUnallocated(instr);
-              } else {
-                VisitFPImmediate(instr);
-              }
-            } else {
-              if (instr->Mask(0x80800000) != 0x00000000) {
-                VisitUnallocated(instr);
-              } else {
-                switch (instr->Bits(11, 10)) {
-                  case 1: {
-                    VisitFPConditionalCompare(instr);
-                    break;
-                  }
-                  case 2: {
-                    if ((instr->Bits(15, 14) == 0x3) ||
-                        (instr->Mask(0x00009000) == 0x00009000) ||
-                        (instr->Mask(0x0000A000) == 0x0000A000)) {
-                      VisitUnallocated(instr);
-                    } else {
-                      VisitFPDataProcessing2Source(instr);
-                    }
-                    break;
-                  }
-                  case 3: {
-                    VisitFPConditionalSelect(instr);
-                    break;
-                  }
-                  default: VIXL_UNREACHABLE();
-                }
-              }
-            }
-          }
-        } else {
-          // Bit 30 == 1 has been handled earlier.
-          VIXL_ASSERT(instr->Bit(30) == 0);
-          if (instr->Mask(0xA0800000) != 0) {
-            VisitUnallocated(instr);
-          } else {
-            VisitFPDataProcessing3Source(instr);
-          }
-        }
-      }
-    }
-  }
-}
-
-
-void Decoder::DecodeAdvSIMDLoadStore(const Instruction* instr) {
-  // TODO: Implement Advanced SIMD load/store instruction decode.
-  VIXL_ASSERT(instr->Bits(29, 25) == 0x6);
-  VisitUnimplemented(instr);
-}
-
-
-void Decoder::DecodeAdvSIMDDataProcessing(const Instruction* instr) {
-  // TODO: Implement Advanced SIMD data processing instruction decode.
-  VIXL_ASSERT(instr->Bits(27, 25) == 0x7);
-  VisitUnimplemented(instr);
-}
-
-
-#define DEFINE_VISITOR_CALLERS(A)                                              \
-  void Decoder::Visit##A(const Instruction *instr) {                           \
-    VIXL_ASSERT(instr->Mask(A##FMask) == A##Fixed);                            \
-    std::list<DecoderVisitor*>::iterator it;                                   \
-    for (it = visitors_.begin(); it != visitors_.end(); it++) {                \
-      (*it)->Visit##A(instr);                                                  \
-    }                                                                          \
-  }
-VISITOR_LIST(DEFINE_VISITOR_CALLERS)
-#undef DEFINE_VISITOR_CALLERS
-}  // namespace vixl