diff --git a/llvm/include/llvm/BinaryFormat/GOFF.h b/llvm/include/llvm/BinaryFormat/GOFF.h
new file mode 100644
--- /dev/null
+++ b/llvm/include/llvm/BinaryFormat/GOFF.h
@@ -0,0 +1,158 @@
+//===-- llvm/BinaryFormat/GOFF.h - GOFF definitions --------------*- 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 header contains common, non-processor-specific data structures and
+// constants for the GOFF file format.
+//
+// GOFF specifics can be found in MVS Program Management: Advanced Facilities.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BINARYFORMAT_GOFF_H
+#define LLVM_BINARYFORMAT_GOFF_H
+
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+
+namespace GOFF {
+
+constexpr uint8_t RecordLength = 80;
+const uint8_t RecordPrefixLength = 3;
+const uint8_t PayloadLength = 77;
+
+// Prefix byte on every record. This indicates GOFF format.
+constexpr uint8_t PTVPrefix = 0x03;
+
+enum RecordType {
+  RT_ESD = 0,
+  RT_TXT = 1,
+  RT_RLD = 2,
+  RT_LEN = 3,
+  RT_END = 4,
+  RT_HDR = 15,
+};
+
+enum ESDSymbolType : uint8_t {
+  ESD_ST_SectionDefinition = 0,
+  ESD_ST_ElementDefinition = 1,
+  ESD_ST_LabelDefinition = 2,
+  ESD_ST_PartReference = 3,
+  ESD_ST_ExternalReference = 4,
+};
+
+enum ESDNameSpaceId : uint8_t {
+  ESD_NS_ProgramManagementBinder = 0,
+  ESD_NS_NormalName = 1,
+  ESD_NS_PseudoRegister = 2,
+  ESD_NS_Parts = 3
+};
+
+enum ESDReserveQwords {
+  ESD_RQ_0 = 0,
+  ESD_RQ_1 = 1,
+  ESD_RQ_2 = 2,
+  ESD_RQ_3 = 3
+};
+
+enum ESDAmode : uint8_t {
+  ESD_AMODE_None = 0,
+  ESD_AMODE_24 = 1,
+  ESD_AMODE_31 = 2,
+  ESD_AMODE_ANY = 3,
+  ESD_AMODE_64 = 4,
+  ESD_AMODE_MIN = 16,
+};
+
+enum ESDRmode : uint8_t {
+  ESD_RMODE_None = 0,
+  ESD_RMODE_24 = 1,
+  ESD_RMODE_31 = 3,
+  ESD_RMODE_64 = 4,
+};
+
+enum ESDTextStyle {
+  ESD_TS_ByteOriented = 0,
+  ESD_TS_Structured = 1,
+  ESD_TS_Unstructured = 2,
+};
+
+enum ESDBindingAlgorithm {
+  ESD_BA_Concatenate = 0,
+  ESD_BA_Merge = 1,
+};
+
+enum ESDTaskingBehavior {
+  ESD_TA_Unspecified = 0,
+  ESD_TA_NonReus = 1,
+  ESD_TA_Reus = 2,
+  ESD_TA_Rent = 3,
+};
+
+enum ESDExecutable : uint8_t {
+  ESD_EXE_Unspecified = 0,
+  ESD_EXE_DATA = 1,
+  ESD_EXE_CODE = 2,
+};
+
+enum ESDDuplicateSymbolSeverity {
+  ESD_DSS_NoWarning = 0,
+  ESD_DSS_Warning = 1,
+  ESD_DSS_Error = 2,
+  ESD_DSS_Reserved = 3,
+};
+
+enum ESDBindingStrength {
+  ESD_BST_Strong = 0,
+  ESD_BST_Weak = 1,
+};
+
+enum ESDLoadingBehavior {
+  ESD_LB_Initial = 0,
+  ESD_LB_Deferred = 1,
+  ESD_LB_NoLoad = 2,
+  ESD_LB_Reserved = 3,
+};
+
+enum ESDBindingScope {
+  ESD_BSC_Unspecified = 0,
+  ESD_BSC_Section = 1,
+  ESD_BSC_Module = 2,
+  ESD_BSC_Library = 3,
+  ESD_BSC_ImportExport = 4,
+};
+
+enum ESDLinkageType { ESD_LT_OS = 0, ESD_LT_XPLink = 1 };
+
+enum ESDAlignment {
+  ESD_ALIGN_Byte = 0,
+  ESD_ALIGN_Halfword = 1,
+  ESD_ALIGN_Fullword = 2,
+  ESD_ALIGN_Doubleword = 3,
+  ESD_ALIGN_Quadword = 4,
+  ESD_ALIGN_32byte = 5,
+  ESD_ALIGN_64byte = 6,
+  ESD_ALIGN_128byte = 7,
+  ESD_ALIGN_256byte = 8,
+  ESD_ALIGN_512byte = 9,
+  ESD_ALIGN_1024byte = 10,
+  ESD_ALIGN_2Kpage = 11,
+  ESD_ALIGN_4Kpage = 12,
+};
+
+enum ENDEntryPointRequest {
+  END_EPR_None = 0,
+  END_EPR_EsdidOffset = 1,
+  END_EPR_ExternalName = 2,
+  END_EPR_Reserved = 3,
+};
+} // end namespace GOFF
+
+} // end namespace llvm
+
+#endif // LLVM_BINARYFORMAT_GOFF_H
diff --git a/llvm/include/llvm/BinaryFormat/Magic.h b/llvm/include/llvm/BinaryFormat/Magic.h
--- a/llvm/include/llvm/BinaryFormat/Magic.h
+++ b/llvm/include/llvm/BinaryFormat/Magic.h
@@ -49,6 +49,7 @@
     xcoff_object_64,     ///< 64-bit XCOFF object file
     wasm_object,         ///< WebAssembly Object file
     pdb,                 ///< Windows PDB debug info file
+    goff_object,         ///< GOFF object file
     tapi_file,           ///< Text-based Dynamic Library Stub file
   };
 
diff --git a/llvm/include/llvm/Object/Binary.h b/llvm/include/llvm/Object/Binary.h
--- a/llvm/include/llvm/Object/Binary.h
+++ b/llvm/include/llvm/Object/Binary.h
@@ -67,6 +67,7 @@
     ID_MachO64L, // MachO 64-bit, little endian
     ID_MachO64B, // MachO 64-bit, big endian
 
+    ID_GOFF,
     ID_Wasm,
 
     ID_EndObjects
@@ -141,6 +142,8 @@
     return TypeID == ID_IR;
   }
 
+  bool isGOFF() const { return TypeID == ID_GOFF; }
+
   bool isMinidump() const { return TypeID == ID_Minidump; }
 
   bool isTapiFile() const { return TypeID == ID_TapiFile; }
@@ -159,6 +162,8 @@
       return Triple::MachO;
     if (isELF())
       return Triple::ELF;
+    if (isGOFF())
+      return Triple::GOFF;
     return Triple::UnknownObjectFormat;
   }
 
diff --git a/llvm/include/llvm/Object/GOFF.h b/llvm/include/llvm/Object/GOFF.h
new file mode 100644
--- /dev/null
+++ b/llvm/include/llvm/Object/GOFF.h
@@ -0,0 +1,408 @@
+//===- GOFF.h - GOFF object file implementation -----------------*- 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 declares the GOFFObjectFile class.
+// Record classes and derivatives are also declared and implemented.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OBJECT_GOFF_H
+#define LLVM_OBJECT_GOFF_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/BinaryFormat/GOFF.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+
+namespace object {
+
+/// \brief Represents a GOFF physical record.
+///
+/// Specifies protected member functions to manipulate the record. These should
+/// be called from deriving classes to change values as that record specifies.
+class Record {
+  SmallVector<char, GOFF::RecordLength> Bytes;
+
+public:
+  Record() : Bytes(GOFF::RecordLength, (char)0x00) {
+    set<uint8_t>(0, GOFF::PTVPrefix);
+  };
+
+  static Error getContinuousData(const uint8_t *Record, uint16_t DataLength,
+                                 int DataIndex, SmallString<256> &CompleteData);
+
+  // Set PTV fields common to all records.
+  void setRecordType(GOFF::RecordType RecordType) {
+    setBits(1, 0, 4, RecordType);
+  }
+
+  void setContinuation(bool Continuation) { setBits(1, 6, 1, Continuation); }
+
+  void setContinued(bool Continued) { setBits(1, 7, 1, Continued); }
+
+  static bool isContinued(const uint8_t *Record) {
+    uint8_t IsContinued;
+    getBits(Record, 1, 7, 1, IsContinued);
+    return IsContinued;
+  }
+
+  static bool isContinuation(const uint8_t *Record) {
+    uint8_t IsContinuation;
+    getBits(Record, 1, 6, 1, IsContinuation);
+    return IsContinuation;
+  }
+
+  const SmallVectorImpl<char> &getBytes() const { return Bytes; }
+
+protected:
+  /// \brief Set bit field of specified byte.
+  ///
+  /// Used to pack bit fields into one byte. Fields are packed left to right.
+  /// Bit index zero is the most significant bit of the byte.
+  ///
+  /// \param ByteIndex index of byte the field is in.
+  /// \param BitIndex index of first bit of field.
+  /// \param Length length of bit field.
+  /// \param Value new value of bit field.
+  void setBits(uint8_t ByteIndex, uint8_t BitIndex, uint8_t Length,
+               uint8_t Value) {
+    assert(ByteIndex < GOFF::RecordLength && "Byte index out of bounds!");
+    assert(BitIndex < 8 && "Bit index out of bounds!");
+    assert(Length + BitIndex <= 8 && "Bit length too long!");
+
+    uint8_t Mask = ((1 << Length) - 1) << (8 - BitIndex - Length);
+    Value = Value << (8 - BitIndex - Length);
+    assert((Value & Mask) == Value && "Bits set outside of range!");
+
+    uint8_t PrevValue;
+    get<uint8_t>(reinterpret_cast<const uint8_t *>(Bytes.data()), ByteIndex,
+                 PrevValue);
+    set<uint8_t>(ByteIndex, (PrevValue & ~Mask) | Value);
+  }
+
+  // Set byte of record.
+  template <class T> void set(uint8_t ByteIndex, T Value) {
+    assert(ByteIndex + sizeof(T) - 1 < GOFF::RecordLength &&
+           "Byte index out of bounds!");
+    support::endian::write<T, support::big, support::unaligned>(
+        &Bytes[ByteIndex], Value);
+  }
+
+  static void getBits(const uint8_t *Bytes, uint8_t ByteIndex, uint8_t BitIndex,
+                      uint8_t Length, uint8_t &Value) {
+    assert(ByteIndex < GOFF::RecordLength && "Byte index out of bounds!");
+    assert(BitIndex < 8 && "Bit index out of bounds!");
+    assert(Length + BitIndex <= 8 && "Bit length too long!");
+
+    get<uint8_t>(Bytes, ByteIndex, Value);
+    Value = (Value >> (8 - BitIndex - Length)) & ((1 << Length) - 1);
+  }
+
+  template <class T>
+  static void get(const uint8_t *Bytes, uint8_t ByteIndex, T &Value) {
+    assert(ByteIndex + sizeof(T) <= GOFF::RecordLength &&
+           "Byte index out of bounds!");
+    Value = support::endian::read<T, support::big, support::unaligned>(
+        &Bytes[ByteIndex]);
+  }
+};
+
+class HDRRecord : public Record {
+public:
+  HDRRecord() : Record() {
+    setRecordType(GOFF::RT_HDR);
+    setArchitectureLevel(1);
+  }
+
+  static Error getData(const uint8_t *Record, SmallString<256> &CompleteData) {
+    uint16_t Length = getPropertyModuleLength(Record);
+    return getContinuousData(Record, Length, 60, CompleteData);
+  }
+
+  static uint16_t getPropertyModuleLength(const uint8_t *Record) {
+    uint16_t Length;
+    get<uint16_t>(Record, 52, Length);
+    return Length;
+  }
+
+  void setArchitectureLevel(uint32_t Level) { set<uint32_t>(48, Level); }
+};
+
+class ESDRecord : public Record {
+public:
+  /// \brief Number of bytes for name; any more must go in continuation.
+  /// This is the number of bytes that can fit into the data field of an ESD
+  /// record.
+  static const uint8_t ESDMaxUncontinuedNameLength = 8;
+
+  /// \brief Maximum name length for ESD records and continuations.
+  /// This is the number of bytes that can fit into the data field of an ESD
+  /// record AND following continuations. This is limited fundamentally by the
+  /// 16 bit SIGNED length field.
+  static const uint16_t MaxNameLength = 32 * 1024;
+
+public:
+  ESDRecord() : Record() { setRecordType(GOFF::RT_ESD); }
+
+  static Error getData(const uint8_t *Record, SmallString<256> &CompleteData) {
+    uint16_t DataSize = getNameLength(Record);
+    return getContinuousData(Record, DataSize, 72, CompleteData);
+  }
+
+  void setSymbolType(GOFF::ESDSymbolType SymbolType) {
+    set<uint8_t>(3, SymbolType);
+  }
+  void setEsdId(uint32_t EsdId) { set<uint32_t>(4, EsdId); }
+  void setParentEsdId(uint32_t EsdId) { set<uint32_t>(8, EsdId); }
+  void setOffset(uint32_t Offset) { set<uint32_t>(16, Offset); }
+  void setLength(uint32_t Length) { set<uint32_t>(24, Length); }
+  void setNameSpaceId(GOFF::ESDNameSpaceId Id) { set<uint8_t>(40, Id); }
+  void setFillBytePresent(bool Present) { setBits(41, 0, 1, Present); }
+  void setNameMangled(bool Mangled) { setBits(41, 1, 1, Mangled); }
+  void setRenamable(bool Renamable) { setBits(41, 2, 1, Renamable); }
+  void setRemovable(bool Removable) { setBits(41, 3, 1, Removable); }
+  void setReserveQwords(GOFF::ESDReserveQwords Reserve) {
+    setBits(41, 5, 3, Reserve);
+  }
+  void setFillByteValue(uint8_t Fill) { set<uint8_t>(42, Fill); }
+  void setAdaEsdId(uint32_t EsdId) { set<uint32_t>(44, EsdId); }
+  void setSortPriority(uint32_t Priority) { set<uint32_t>(48, Priority); }
+  void setAmode(GOFF::ESDAmode Amode) { set<uint8_t>(60, Amode); }
+  void setRmode(GOFF::ESDRmode Rmode) { set<uint8_t>(61, Rmode); }
+  void setTextStyle(GOFF::ESDTextStyle Style) { setBits(62, 0, 4, Style); }
+  void setBindingAlgorithm(GOFF::ESDBindingAlgorithm Algorithm) {
+    setBits(62, 4, 4, Algorithm);
+  }
+  void setTaskingBehavior(GOFF::ESDTaskingBehavior TaskingBehavior) {
+    setBits(63, 0, 3, TaskingBehavior);
+  }
+  void setReadOnly(bool ReadOnly) { setBits(63, 4, 1, ReadOnly); }
+  void setExecutable(GOFF::ESDExecutable Executable) {
+    setBits(63, 5, 3, Executable);
+  }
+  void setDuplicateSeverity(GOFF::ESDDuplicateSymbolSeverity DSS) {
+    setBits(64, 2, 2, DSS);
+  }
+  void setBindingStrength(GOFF::ESDBindingStrength Strength) {
+    setBits(64, 4, 4, Strength);
+  }
+  void setLoadingBehavior(GOFF::ESDLoadingBehavior Behavior) {
+    setBits(65, 0, 2, Behavior);
+  }
+  void setIndirectReference(bool Indirect) { setBits(65, 3, 1, Indirect); }
+  void setBindingScope(GOFF::ESDBindingScope Scope) {
+    setBits(65, 4, 4, Scope);
+  }
+  void setLinkageType(GOFF::ESDLinkageType Type) { setBits(66, 2, 1, Type); }
+  void setAlignment(GOFF::ESDAlignment Alignment) {
+    setBits(66, 3, 5, Alignment);
+  }
+  void setNameLength(uint16_t Length) { set<uint16_t>(70, Length); }
+
+  // ESD Get routines.
+  static void getSymbolType(const uint8_t *Record,
+                            GOFF::ESDSymbolType &SymbolType) {
+    uint8_t Value;
+    get<uint8_t>(Record, 3, Value);
+    SymbolType = (GOFF::ESDSymbolType)Value;
+  }
+
+  static void getEsdId(const uint8_t *Record, uint32_t &EsdId) {
+    get<uint32_t>(Record, 4, EsdId);
+  }
+
+  static void getParentEsdId(const uint8_t *Record, uint32_t &EsdId) {
+    get<uint32_t>(Record, 8, EsdId);
+  }
+
+  static void getOffset(const uint8_t *Record, uint32_t &Offset) {
+    get<uint32_t>(Record, 16, Offset);
+  }
+
+  static void getLength(const uint8_t *Record, uint32_t &Length) {
+    get<uint32_t>(Record, 24, Length);
+  }
+
+  static void getNameSpaceId(const uint8_t *Record, GOFF::ESDNameSpaceId &Id) {
+    uint8_t Value;
+    get<uint8_t>(Record, 40, Value);
+    Id = (GOFF::ESDNameSpaceId)Value;
+  }
+
+  static void getFillBytePresent(const uint8_t *Record, bool &Present) {
+    uint8_t Value;
+    getBits(Record, 41, 0, 1, Value);
+    Present = (bool)Value;
+  }
+
+  static void getNameMangled(const uint8_t *Record, bool &Mangled) {
+    uint8_t Value;
+    getBits(Record, 41, 1, 1, Value);
+    Mangled = (bool)Value;
+  }
+
+  static void getRenamable(const uint8_t *Record, bool &Renamable) {
+    uint8_t Value;
+    getBits(Record, 41, 2, 1, Value);
+    Renamable = (bool)Value;
+  }
+
+  static void getRemovable(const uint8_t *Record, bool &Removable) {
+    uint8_t Value;
+    getBits(Record, 41, 3, 1, Value);
+    Removable = (bool)Value;
+  }
+
+  static void getFillByteValue(const uint8_t *Record, uint8_t &Fill) {
+    get<uint8_t>(Record, 42, Fill);
+  }
+
+  static void getAdaEsdId(const uint8_t *Record, uint32_t &EsdId) {
+    get<uint32_t>(Record, 44, EsdId);
+  }
+
+  static void getSortPriority(const uint8_t *Record, uint32_t &Priority) {
+    get<uint32_t>(Record, 48, Priority);
+  }
+
+  static void getAmode(const uint8_t *Record, GOFF::ESDAmode &Amode) {
+    uint8_t Value;
+    get<uint8_t>(Record, 60, Value);
+    Amode = (GOFF::ESDAmode)Value;
+  }
+
+  static void getRmode(const uint8_t *Record, GOFF::ESDRmode &Rmode) {
+    uint8_t Value;
+    get<uint8_t>(Record, 61, Value);
+    Rmode = (GOFF::ESDRmode)Value;
+  }
+
+  static void getTextStyle(const uint8_t *Record, GOFF::ESDTextStyle &Style) {
+    uint8_t Value;
+    getBits(Record, 62, 0, 4, Value);
+    Style = (GOFF::ESDTextStyle)Value;
+  }
+
+  static void getBindingAlgorithm(const uint8_t *Record,
+                                  GOFF::ESDBindingAlgorithm &Algorithm) {
+    uint8_t Value;
+    getBits(Record, 62, 4, 4, Value);
+    Algorithm = (GOFF::ESDBindingAlgorithm)Value;
+  }
+
+  static void getTaskingBehavior(const uint8_t *Record,
+                                 GOFF::ESDTaskingBehavior &TaskingBehavior) {
+    uint8_t Value;
+    getBits(Record, 63, 0, 3, Value);
+    TaskingBehavior = (GOFF::ESDTaskingBehavior)Value;
+  }
+
+  static void getReadOnly(const uint8_t *Record, bool &ReadOnly) {
+    uint8_t Value;
+    getBits(Record, 63, 4, 1, Value);
+    ReadOnly = (bool)Value;
+  }
+
+  static void getExecutable(const uint8_t *Record,
+                            GOFF::ESDExecutable &Executable) {
+    uint8_t Value;
+    getBits(Record, 63, 5, 3, Value);
+    Executable = (GOFF::ESDExecutable)Value;
+  }
+
+  static void getDuplicateSeverity(const uint8_t *Record,
+                                   GOFF::ESDDuplicateSymbolSeverity &DSS) {
+    uint8_t Value;
+    getBits(Record, 64, 2, 2, Value);
+    DSS = (GOFF::ESDDuplicateSymbolSeverity)Value;
+  }
+
+  static void getBindingStrength(const uint8_t *Record,
+                                 GOFF::ESDBindingStrength &Strength) {
+    uint8_t Value;
+    getBits(Record, 64, 4, 4, Value);
+    Strength = (GOFF::ESDBindingStrength)Value;
+  }
+
+  static void getLoadingBehavior(const uint8_t *Record,
+                                 GOFF::ESDLoadingBehavior &Behavior) {
+    uint8_t Value;
+    getBits(Record, 65, 0, 2, Value);
+    Behavior = (GOFF::ESDLoadingBehavior)Value;
+  }
+
+  static void getIndirectReference(const uint8_t *Record, bool &Indirect) {
+    uint8_t Value;
+    getBits(Record, 65, 3, 1, Value);
+    Indirect = (bool)Value;
+  }
+
+  static void getBindingScope(const uint8_t *Record,
+                              GOFF::ESDBindingScope &Scope) {
+    uint8_t Value;
+    getBits(Record, 65, 4, 4, Value);
+    Scope = (GOFF::ESDBindingScope)Value;
+  }
+
+  static void getLinkageType(const uint8_t *Record,
+                             GOFF::ESDLinkageType &Type) {
+    uint8_t Value;
+    getBits(Record, 66, 2, 1, Value);
+    Type = (GOFF::ESDLinkageType)Value;
+  }
+
+  static void getAlignment(const uint8_t *Record,
+                           GOFF::ESDAlignment &Alignment) {
+    uint8_t Value;
+    getBits(Record, 66, 3, 5, Value);
+    Alignment = (GOFF::ESDAlignment)Value;
+  }
+
+  static uint16_t getNameLength(const uint8_t *Record) {
+    uint16_t Length;
+    get<uint16_t>(Record, 70, Length);
+    return Length;
+  }
+};
+
+class ENDRecord : public Record {
+public:
+  ENDRecord() : Record() {
+    setRecordType(GOFF::RT_END);
+    setEntryPointRequestType(GOFF::END_EPR_None); // TODO Always None for now.
+  }
+
+  static Error getData(const uint8_t *Record, SmallString<256> &CompleteData) {
+    uint16_t Length = getNameLength(Record);
+    return getContinuousData(Record, Length, 26, CompleteData);
+  }
+
+  static uint16_t getNameLength(const uint8_t *Record) {
+    uint16_t Length;
+    get<uint16_t>(Record, 24, Length);
+    return Length;
+  }
+
+  void setEntryPointRequestType(GOFF::ENDEntryPointRequest Eprt) {
+    setBits(3, 6, 2, Eprt);
+  }
+
+  void setEntryAmode(GOFF::ESDAmode Amode) { set<uint8_t>(4, Amode); }
+
+  void setEntryEsdId(uint32_t EsdId) { set<uint32_t>(12, EsdId); }
+
+  void setRecordCount(uint32_t RecordCount) { set<uint32_t>(8, RecordCount); }
+};
+
+} // end namespace object
+} // end namespace llvm
+
+#endif
diff --git a/llvm/include/llvm/Object/GOFFObjectFile.h b/llvm/include/llvm/Object/GOFFObjectFile.h
new file mode 100644
--- /dev/null
+++ b/llvm/include/llvm/Object/GOFFObjectFile.h
@@ -0,0 +1,127 @@
+//===- GOFF.h - GOFF object file implementation -----------------*- 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 declares the GOFFObjectFile class.
+// Record classes and derivatives are also declared and implemented.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OBJECT_GOFFOBJECTFILE_H
+#define LLVM_OBJECT_GOFFOBJECTFILE_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/IndexedMap.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/BinaryFormat/GOFF.h"
+#include "llvm/MC/SubtargetFeature.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/CharSet.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+
+namespace object {
+
+class GOFFObjectFile : public ObjectFile {
+  IndexedMap<const uint8_t *> EsdPtrs; // Indexed by EsdId.
+
+  mutable DenseMap<uint32_t, std::string> EsdNamesCache;
+
+  typedef DataRefImpl SectionEntryImpl;
+  // (EDID, 0)               code, r/o data section
+  // (EDID,PRID)             r/w data section
+  SmallVector<SectionEntryImpl, 256> SectionList;
+  mutable DenseMap<uint32_t, std::string> SectionDataCache;
+
+  CharSetConverter Converter;
+
+public:
+  Expected<StringRef> getSymbolName(SymbolRef Symbol) const;
+
+  GOFFObjectFile(MemoryBufferRef Object, Error &Err);
+  static inline bool classof(const Binary *V) { return V->isGOFF(); }
+  section_iterator section_begin() const override;
+  section_iterator section_end() const override;
+
+  uint8_t getBytesInAddress() const override { return 8; }
+
+  StringRef getFileFormatName() const override { return "GOFF-SystemZ"; }
+
+  Triple::ArchType getArch() const override { return Triple::systemz; }
+
+  SubtargetFeatures getFeatures() const override { return SubtargetFeatures(); }
+
+  bool isRelocatableObject() const override { return true; }
+
+  void moveSymbolNext(DataRefImpl &Symb) const override;
+  basic_symbol_iterator symbol_begin() const override;
+  basic_symbol_iterator symbol_end() const override;
+
+private:
+  // SymbolRef.
+  Expected<StringRef> getSymbolName(DataRefImpl Symb) const override;
+  Expected<uint64_t> getSymbolAddress(DataRefImpl Symb) const override;
+  uint64_t getSymbolValueImpl(DataRefImpl Symb) const override;
+  uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override;
+  Expected<uint32_t> getSymbolFlags(DataRefImpl Symb) const override;
+  Expected<SymbolRef::Type> getSymbolType(DataRefImpl Symb) const override;
+  Expected<section_iterator> getSymbolSection(DataRefImpl Symb) const override;
+
+  const uint8_t *getSymbolEsdRecord(DataRefImpl Symb) const;
+  bool isSymbolUnresolved(DataRefImpl Symb) const;
+  bool isSymbolIndirect(DataRefImpl Symb) const;
+
+  // SectionRef.
+  void moveSectionNext(DataRefImpl &Sec) const override{};
+  virtual Expected<StringRef> getSectionName(DataRefImpl Sec) const override {
+    return StringRef();
+  }
+  uint64_t getSectionAddress(DataRefImpl Sec) const override { return 0; }
+  uint64_t getSectionSize(DataRefImpl Sec) const override { return 0; }
+  virtual Expected<ArrayRef<uint8_t>>
+  getSectionContents(DataRefImpl Sec) const override {
+    return ArrayRef<uint8_t>();
+  }
+  uint64_t getSectionIndex(DataRefImpl Sec) const override { return 0; }
+  uint64_t getSectionAlignment(DataRefImpl Sec) const override { return 0; }
+  bool isSectionCompressed(DataRefImpl Sec) const override { return false; }
+  bool isSectionText(DataRefImpl Sec) const override { return false; }
+  bool isSectionData(DataRefImpl Sec) const override { return false; }
+  bool isSectionBSS(DataRefImpl Sec) const override { return false; }
+  bool isSectionVirtual(DataRefImpl Sec) const override { return false; }
+  relocation_iterator section_rel_begin(DataRefImpl Sec) const override {
+    return relocation_iterator(RelocationRef(Sec, this));
+  }
+  relocation_iterator section_rel_end(DataRefImpl Sec) const override {
+    return relocation_iterator(RelocationRef(Sec, this));
+  }
+
+  const uint8_t *getSectionEdEsdRecord(DataRefImpl &Sec) const;
+  const uint8_t *getSectionPrEsdRecord(DataRefImpl &Sec) const;
+  const uint8_t *getSectionEdEsdRecord(uint32_t SectionIndex) const;
+  const uint8_t *getSectionPrEsdRecord(uint32_t SectionIndex) const;
+
+  // RelocationRef.
+  void moveRelocationNext(DataRefImpl &Rel) const override{};
+  uint64_t getRelocationOffset(DataRefImpl Rel) const override { return 0; }
+  symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override {
+    DataRefImpl Temp;
+    return basic_symbol_iterator(SymbolRef(Temp, this));
+  }
+  uint64_t getRelocationType(DataRefImpl Rel) const override { return 0; }
+  void getRelocationTypeName(DataRefImpl Rel,
+                             SmallVectorImpl<char> &Result) const override{};
+};
+
+} // namespace object
+
+} // namespace llvm
+
+#endif
diff --git a/llvm/include/llvm/Object/ObjectFile.h b/llvm/include/llvm/Object/ObjectFile.h
--- a/llvm/include/llvm/Object/ObjectFile.h
+++ b/llvm/include/llvm/Object/ObjectFile.h
@@ -375,6 +375,9 @@
                         uint32_t UniversalCputype = 0,
                         uint32_t UniversalIndex = 0);
 
+  static Expected<std::unique_ptr<ObjectFile>>
+  createGOFFObjectFile(MemoryBufferRef Object);
+
   static Expected<std::unique_ptr<WasmObjectFile>>
   createWasmObjectFile(MemoryBufferRef Object);
 };
diff --git a/llvm/lib/BinaryFormat/Magic.cpp b/llvm/lib/BinaryFormat/Magic.cpp
--- a/llvm/lib/BinaryFormat/Magic.cpp
+++ b/llvm/lib/BinaryFormat/Magic.cpp
@@ -83,6 +83,10 @@
     if (startswith(Magic, "!<arch>\n") || startswith(Magic, "!<thin>\n"))
       return file_magic::archive;
     break;
+  case 0x03:
+    if (startswith(Magic, "\x03\xF0\x00"))
+      return file_magic::goff_object;
+    break;
 
   case '\177':
     if (startswith(Magic, "\177ELF") && Magic.size() >= 18) {
diff --git a/llvm/lib/Object/Binary.cpp b/llvm/lib/Object/Binary.cpp
--- a/llvm/lib/Object/Binary.cpp
+++ b/llvm/lib/Object/Binary.cpp
@@ -69,6 +69,7 @@
   case file_magic::macho_kext_bundle:
   case file_magic::coff_object:
   case file_magic::coff_import_library:
+  case file_magic::goff_object:
   case file_magic::pecoff_executable:
   case file_magic::bitcode:
   case file_magic::xcoff_object_32:
diff --git a/llvm/lib/Object/CMakeLists.txt b/llvm/lib/Object/CMakeLists.txt
--- a/llvm/lib/Object/CMakeLists.txt
+++ b/llvm/lib/Object/CMakeLists.txt
@@ -9,6 +9,7 @@
   ELF.cpp
   ELFObjectFile.cpp
   Error.cpp
+  GOFFObjectFile.cpp
   FaultMapParser.cpp
   IRObjectFile.cpp
   IRSymtab.cpp
diff --git a/llvm/lib/Object/GOFFObjectFile.cpp b/llvm/lib/Object/GOFFObjectFile.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/lib/Object/GOFFObjectFile.cpp
@@ -0,0 +1,450 @@
+//===- GOFFObjectFile.cpp - GOFF object file implementation -----*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// Implementation of the GOFFObjectFile class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/GOFFObjectFile.h"
+#include "llvm/BinaryFormat/GOFF.h"
+#include "llvm/Object/GOFF.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Errc.h"
+#include "llvm/Support/raw_ostream.h"
+
+#ifndef DEBUG_TYPE
+#define DEBUG_TYPE "goff"
+#endif
+
+using namespace llvm;
+using namespace object;
+
+Expected<std::unique_ptr<ObjectFile>>
+ObjectFile::createGOFFObjectFile(MemoryBufferRef Object) {
+  Error Err = Error::success();
+  std::unique_ptr<GOFFObjectFile> Ret(new GOFFObjectFile(Object, Err));
+  if (Err)
+    return std::move(Err);
+  return std::move(Ret);
+}
+
+GOFFObjectFile::GOFFObjectFile(MemoryBufferRef Object, Error &Err)
+    : ObjectFile(Binary::ID_GOFF, Object),
+      Converter(cantFail(errorOrToExpected(CharSetConverter::create(
+          CharSetConverter::CP_IBM1047, CharSetConverter::CP_UTF8)))) {
+  ErrorAsOutParameter ErrAsOutParam(&Err);
+  // Object file isn't the right size, bail out early.
+  if ((Object.getBufferSize() % GOFF::RecordLength) != 0) {
+    Err = createStringError(
+        object_error::unexpected_eof,
+        "object file is not the right size. Must be a multiple "
+        "of 80 bytes, but is " +
+            std::to_string(Object.getBufferSize()) + " bytes");
+    return;
+  }
+  // Object file doesn't start/end with HDR/END records.
+  // Bail out early.
+  if (Object.getBufferSize() != 0) {
+    if ((base()[1] & 0xF0) >> 4 != GOFF::RT_HDR) {
+      Err = createStringError(object_error::parse_failed,
+                              "object file must start with HDR record");
+      return;
+    }
+    if ((base()[Object.getBufferSize() - GOFF::RecordLength + 1] & 0xF0) >> 4 !=
+        GOFF::RT_END) {
+      Err = createStringError(object_error::parse_failed,
+                              "object file must end with END record");
+      return;
+    }
+  }
+
+  SectionEntryImpl DummySection;
+  SectionList.emplace_back(DummySection); // Dummy entry at index 0.
+
+  uint8_t PrevRecordType = 0;
+  uint8_t PrevContinuationBits = 0;
+  const uint8_t *End = reinterpret_cast<const uint8_t *>(Data.getBufferEnd());
+  for (const uint8_t *I = base(); I < End; I += GOFF::RecordLength) {
+    uint8_t RecordType = (I[1] & 0xF0) >> 4;
+    bool IsContinuation = I[1] & 0x02;
+    bool PrevWasContinued = PrevContinuationBits & 0x01;
+
+    // If the previous record was continued, the current record should be a
+    // continuation.
+    if (PrevWasContinued && !IsContinuation) {
+      if (PrevRecordType == RecordType) {
+        Err = createStringError(
+            object_error::parse_failed,
+            "continued record is not followed by a continuation record");
+        return;
+      }
+    }
+    // Don't parse continuations records, only parse initial record.
+    if (IsContinuation) {
+      if (RecordType != PrevRecordType) {
+        Err = createStringError(
+            object_error::parse_failed,
+            "continuation record type does not match previous record");
+        return;
+      }
+      if (!PrevWasContinued) {
+        Err = createStringError(object_error::parse_failed,
+                                "previous record was not continued");
+        return;
+      }
+      PrevRecordType = RecordType;
+      PrevContinuationBits = I[1] & 0x03;
+      continue;
+    }
+
+    for (size_t J = 0; J < GOFF::RecordLength; ++J) {
+      const uint8_t *P = I + J;
+      if (J % 8 == 0)
+        LLVM_DEBUG(dbgs() << "  ");
+
+      LLVM_DEBUG(dbgs() << format("%02hhX", *P));
+    }
+    switch (RecordType) {
+    case GOFF::RT_ESD: {
+      // Save ESD record.
+      uint32_t EsdId;
+      ESDRecord::getEsdId(I, EsdId);
+      EsdPtrs.grow(EsdId);
+      EsdPtrs[EsdId] = I;
+
+      // Determine and save the "sections" in GOFF.
+      // A section is saved as a tuple of the form
+      // case (1): (ED,child PR)
+      //    - where the PR must have non-zero length.
+      // case (2a) (ED,0)
+      //   - where the ED is of non-zero length.
+      // case (2b) (ED,0)
+      //   - where the ED is zero length but
+      //     contains a label (LD).
+      GOFF::ESDSymbolType SymbolType;
+      ESDRecord::getSymbolType(I, SymbolType);
+      SectionEntryImpl Section;
+      uint32_t Length;
+      ESDRecord::getLength(I, Length);
+      if (SymbolType == GOFF::ESD_ST_ElementDefinition) {
+        // case (2a)
+        if (Length != 0) {
+          Section.d.a = EsdId;
+          SectionList.emplace_back(Section);
+        }
+      } else if (SymbolType == GOFF::ESD_ST_PartReference) {
+        // case (1)
+        if (Length != 0) {
+          uint32_t SymEdId;
+          ESDRecord::getParentEsdId(I, SymEdId);
+          Section.d.a = SymEdId;
+          Section.d.b = EsdId;
+          SectionList.emplace_back(Section);
+        }
+      } else if (SymbolType == GOFF::ESD_ST_LabelDefinition) {
+        // case (2b)
+        uint32_t SymEdId;
+        ESDRecord::getParentEsdId(I, SymEdId);
+        const uint8_t *SymEdRecord = EsdPtrs[SymEdId];
+        uint32_t EdLength;
+        ESDRecord::getLength(SymEdRecord, EdLength);
+        if (!EdLength) { // [ EDID, PRID ]
+          // LD child of a zero length parent ED.
+          // Add the section ED which was previously ignored.
+          Section.d.a = SymEdId;
+          SectionList.emplace_back(Section);
+        }
+      }
+      LLVM_DEBUG(dbgs() << "  --  ESD " << EsdId << "\n");
+      break;
+    }
+    case GOFF::RT_END:
+      LLVM_DEBUG(dbgs() << "  --  END (GOFF record type) unhandled\n");
+      break;
+    case GOFF::RT_HDR:
+      LLVM_DEBUG(dbgs() << "  --  HDR (GOFF record type) unhandled\n");
+      break;
+    default:
+      llvm_unreachable("Unknown record type");
+    }
+    PrevRecordType = RecordType;
+    PrevContinuationBits = I[1] & 0x03;
+  }
+}
+
+const uint8_t *GOFFObjectFile::getSymbolEsdRecord(DataRefImpl Symb) const {
+  const uint8_t *EsdRecord = EsdPtrs[Symb.d.a];
+  return EsdRecord;
+}
+
+Expected<StringRef> GOFFObjectFile::getSymbolName(DataRefImpl Symb) const {
+  if (EsdNamesCache.count(Symb.d.a))
+    return EsdNamesCache[Symb.d.a];
+
+  SmallString<256> SymbolName;
+  if (auto Err = ESDRecord::getData(getSymbolEsdRecord(Symb), SymbolName))
+    return std::move(Err);
+
+  SmallString<256> SymbolNameConverted;
+  if (auto EC = Converter.convert(SymbolName, SymbolNameConverted))
+    return errorCodeToError(EC);
+  EsdNamesCache[Symb.d.a].assign(SymbolNameConverted.c_str());
+  return EsdNamesCache[Symb.d.a];
+}
+
+Expected<StringRef> GOFFObjectFile::getSymbolName(SymbolRef Symbol) const {
+  return getSymbolName(Symbol.getRawDataRefImpl());
+}
+
+Expected<uint64_t> GOFFObjectFile::getSymbolAddress(DataRefImpl Symb) const {
+  uint32_t Offset;
+  const uint8_t *EsdRecord = getSymbolEsdRecord(Symb);
+  ESDRecord::getOffset(EsdRecord, Offset);
+  return static_cast<uint64_t>(Offset);
+}
+
+uint64_t GOFFObjectFile::getSymbolValueImpl(DataRefImpl Symb) const {
+  uint32_t Offset;
+  const uint8_t *EsdRecord = getSymbolEsdRecord(Symb);
+  ESDRecord::getOffset(EsdRecord, Offset);
+  return static_cast<uint64_t>(Offset);
+}
+
+uint64_t GOFFObjectFile::getCommonSymbolSizeImpl(DataRefImpl Symb) const {
+  return 0;
+}
+
+bool GOFFObjectFile::isSymbolUnresolved(DataRefImpl Symb) const {
+  const uint8_t *Record = getSymbolEsdRecord(Symb);
+  GOFF::ESDSymbolType SymbolType;
+  ESDRecord::getSymbolType(Record, SymbolType);
+
+  if (SymbolType == GOFF::ESD_ST_ExternalReference)
+    return true;
+  if (SymbolType == GOFF::ESD_ST_PartReference) {
+    uint32_t Length;
+    ESDRecord::getLength(Record, Length);
+    if (Length == 0)
+      return true;
+  }
+  return false;
+}
+
+bool GOFFObjectFile::isSymbolIndirect(DataRefImpl Symb) const {
+  const uint8_t *Record = getSymbolEsdRecord(Symb);
+  bool Indirect;
+  ESDRecord::getIndirectReference(Record, Indirect);
+  return Indirect;
+}
+
+Expected<uint32_t> GOFFObjectFile::getSymbolFlags(DataRefImpl Symb) const {
+  uint32_t Flags = 0;
+  if (isSymbolUnresolved(Symb))
+    Flags |= SymbolRef::SF_Undefined;
+
+  const uint8_t *Record = getSymbolEsdRecord(Symb);
+
+  GOFF::ESDBindingStrength BindingStrength;
+  ESDRecord::getBindingStrength(Record, BindingStrength);
+  if (BindingStrength == GOFF::ESD_BST_Weak)
+    Flags |= SymbolRef::SF_Weak;
+
+  GOFF::ESDBindingScope BindingScope;
+  ESDRecord::getBindingScope(Record, BindingScope);
+
+  if (BindingScope != GOFF::ESD_BSC_Section) {
+    Expected<StringRef> Name = getSymbolName(Symb);
+    if (Name && *Name != " ") { // Blank name is local.
+      Flags |= SymbolRef::SF_Global;
+      if (BindingScope == GOFF::ESD_BSC_ImportExport)
+        Flags |= SymbolRef::SF_Exported;
+      else if (!(Flags & SymbolRef::SF_Undefined))
+        Flags |= SymbolRef::SF_Hidden;
+    }
+  }
+
+  return Flags;
+}
+
+Expected<SymbolRef::Type>
+GOFFObjectFile::getSymbolType(DataRefImpl Symb) const {
+  const uint8_t *Record = getSymbolEsdRecord(Symb);
+  GOFF::ESDSymbolType SymbolType;
+  ESDRecord::getSymbolType(Record, SymbolType);
+  GOFF::ESDExecutable Executable;
+  ESDRecord::getExecutable(Record, Executable);
+
+  if (SymbolType != GOFF::ESD_ST_SectionDefinition &&
+      SymbolType != GOFF::ESD_ST_ElementDefinition &&
+      SymbolType != GOFF::ESD_ST_LabelDefinition &&
+      SymbolType != GOFF::ESD_ST_PartReference &&
+      SymbolType != GOFF::ESD_ST_ExternalReference) {
+    uint32_t EsdId;
+    ESDRecord::getEsdId(Record, EsdId);
+    return createStringError(llvm::errc::invalid_argument,
+                             "ESD record %" PRIu32
+                             " has invalid symbol type 0x%02" PRIX8,
+                             EsdId, SymbolType);
+  }
+  switch (SymbolType) {
+  case GOFF::ESD_ST_SectionDefinition:
+  case GOFF::ESD_ST_ElementDefinition:
+    return SymbolRef::ST_Other;
+  case GOFF::ESD_ST_LabelDefinition:
+  case GOFF::ESD_ST_PartReference:
+  case GOFF::ESD_ST_ExternalReference:
+    if (Executable != GOFF::ESD_EXE_CODE && Executable != GOFF::ESD_EXE_DATA &&
+        Executable != GOFF::ESD_EXE_Unspecified) {
+      uint32_t EsdId;
+      ESDRecord::getEsdId(Record, EsdId);
+      return createStringError(llvm::errc::invalid_argument,
+                               "ESD record %" PRIu32
+                               " has unknown Executable type 0x%02X",
+                               EsdId, Executable);
+    }
+    switch (Executable) {
+    case GOFF::ESD_EXE_CODE:
+      return SymbolRef::ST_Function;
+    case GOFF::ESD_EXE_DATA:
+      return SymbolRef::ST_Data;
+    case GOFF::ESD_EXE_Unspecified:
+      return SymbolRef::ST_Unknown;
+    }
+  }
+}
+
+Expected<section_iterator>
+GOFFObjectFile::getSymbolSection(DataRefImpl Symb) const {
+  DataRefImpl Sec;
+
+  if (isSymbolUnresolved(Symb))
+    return section_iterator(SectionRef(Sec, this));
+
+  const uint8_t *SymEsdRecord = EsdPtrs[Symb.d.a];
+  uint32_t SymEdId;
+  ESDRecord::getParentEsdId(SymEsdRecord, SymEdId);
+  const uint8_t *SymEdRecord = EsdPtrs[SymEdId];
+
+  for (size_t I = 0, E = SectionList.size(); I < E; ++I) {
+    bool Found;
+    const uint8_t *SectionPrRecord = getSectionPrEsdRecord(I);
+    if (SectionPrRecord) {
+      Found = SymEsdRecord == SectionPrRecord;
+    } else {
+      const uint8_t *SectionEdRecord = getSectionEdEsdRecord(I);
+      Found = SymEdRecord == SectionEdRecord;
+    }
+
+    if (Found) {
+      Sec.d.a = I;
+      return section_iterator(SectionRef(Sec, this));
+    }
+  }
+  return createStringError(llvm::errc::invalid_argument,
+                           "no symbol section found");
+}
+
+const uint8_t *GOFFObjectFile::getSectionEdEsdRecord(DataRefImpl &Sec) const {
+  SectionEntryImpl EsdIds = SectionList[Sec.d.a];
+  const uint8_t *EsdRecord = EsdPtrs[EsdIds.d.a];
+  return EsdRecord;
+}
+
+const uint8_t *GOFFObjectFile::getSectionPrEsdRecord(DataRefImpl &Sec) const {
+  SectionEntryImpl EsdIds = SectionList[Sec.d.a];
+  const uint8_t *EsdRecord = nullptr;
+  if (EsdIds.d.b)
+    EsdRecord = EsdPtrs[EsdIds.d.b];
+  return EsdRecord;
+}
+
+const uint8_t *
+GOFFObjectFile::getSectionEdEsdRecord(uint32_t SectionIndex) const {
+  DataRefImpl Sec;
+  Sec.d.a = SectionIndex;
+  const uint8_t *EsdRecord = getSectionEdEsdRecord(Sec);
+  return EsdRecord;
+}
+
+const uint8_t *
+GOFFObjectFile::getSectionPrEsdRecord(uint32_t SectionIndex) const {
+  DataRefImpl Sec;
+  Sec.d.a = SectionIndex;
+  const uint8_t *EsdRecord = getSectionPrEsdRecord(Sec);
+  return EsdRecord;
+}
+
+section_iterator GOFFObjectFile::section_begin() const {
+  DataRefImpl Sec;
+  moveSectionNext(Sec);
+  return section_iterator(SectionRef(Sec, this));
+}
+
+section_iterator GOFFObjectFile::section_end() const {
+  DataRefImpl Sec;
+  return section_iterator(SectionRef(Sec, this));
+}
+
+void GOFFObjectFile::moveSymbolNext(DataRefImpl &Symb) const {
+  for (uint32_t I = Symb.d.a + 1, E = EsdPtrs.size(); I < E; ++I) {
+    if (EsdPtrs[I]) {
+      const uint8_t *EsdRecord = EsdPtrs[I];
+      GOFF::ESDSymbolType SymbolType;
+      ESDRecord::getSymbolType(EsdRecord, SymbolType);
+      // Skip EDs - i.e. section symbols.
+      bool IgnoreSpecialGOFFSymbols = true;
+      bool SkipSymbol = ((SymbolType == GOFF::ESD_ST_ElementDefinition) ||
+                         (SymbolType == GOFF::ESD_ST_SectionDefinition)) &&
+                        IgnoreSpecialGOFFSymbols;
+      if (!SkipSymbol) {
+        Symb.d.a = I;
+        return;
+      }
+    }
+  }
+  Symb.d.a = 0;
+}
+
+basic_symbol_iterator GOFFObjectFile::symbol_begin() const {
+  DataRefImpl Symb;
+  moveSymbolNext(Symb);
+  return basic_symbol_iterator(SymbolRef(Symb, this));
+}
+
+basic_symbol_iterator GOFFObjectFile::symbol_end() const {
+  DataRefImpl Symb;
+  return basic_symbol_iterator(SymbolRef(Symb, this));
+}
+
+Error Record::getContinuousData(const uint8_t *Record, uint16_t DataLength,
+                                int DataIndex, SmallString<256> &CompleteData) {
+  // First record.
+  const uint8_t *Slice = Record + DataIndex;
+  size_t SliceLength =
+      std::min(DataLength, (uint16_t)(GOFF::RecordLength - DataIndex));
+  CompleteData.append(Slice, Slice + SliceLength);
+  DataLength -= SliceLength;
+  Slice += SliceLength;
+
+  // Continuation records.
+  for (; DataLength > 0;
+       DataLength -= SliceLength, Slice += GOFF::PayloadLength) {
+    // Slice points to the start of the new record.
+    // Check that this block is a Continuation.
+    assert(Record::isContinuation(Slice) && "Continuation bit must be set");
+    // Check that the last Continuation is terminated correctly.
+    if (DataLength <= 77 && Record::isContinued(Slice))
+      return createStringError(object_error::parse_failed,
+                               "continued bit should not be set");
+
+    SliceLength = std::min(DataLength, (uint16_t)GOFF::PayloadLength);
+    Slice += GOFF::RecordPrefixLength;
+    CompleteData.append(Slice, Slice + SliceLength);
+  }
+  return Error::success();
+}
diff --git a/llvm/lib/Object/ObjectFile.cpp b/llvm/lib/Object/ObjectFile.cpp
--- a/llvm/lib/Object/ObjectFile.cpp
+++ b/llvm/lib/Object/ObjectFile.cpp
@@ -126,6 +126,9 @@
     // XCOFF implies AIX.
     TheTriple.setOS(Triple::AIX);
     TheTriple.setObjectFormat(Triple::XCOFF);
+  } else if (isGOFF()) {
+    TheTriple.setOS(Triple::ZOS);
+    TheTriple.setObjectFormat(Triple::GOFF);
   }
 
   return TheTriple;
@@ -168,6 +171,8 @@
   case file_magic::macho_dsym_companion:
   case file_magic::macho_kext_bundle:
     return createMachOObjectFile(Object);
+  case file_magic::goff_object:
+    return createGOFFObjectFile(Object);
   case file_magic::coff_object:
   case file_magic::coff_import_library:
   case file_magic::pecoff_executable:
diff --git a/llvm/lib/Object/SymbolicFile.cpp b/llvm/lib/Object/SymbolicFile.cpp
--- a/llvm/lib/Object/SymbolicFile.cpp
+++ b/llvm/lib/Object/SymbolicFile.cpp
@@ -64,6 +64,7 @@
   case file_magic::macho_dsym_companion:
   case file_magic::macho_kext_bundle:
   case file_magic::pecoff_executable:
+  case file_magic::goff_object:
   case file_magic::xcoff_object_32:
   case file_magic::xcoff_object_64:
   case file_magic::wasm_object:
diff --git a/llvm/unittests/BinaryFormat/TestFileMagic.cpp b/llvm/unittests/BinaryFormat/TestFileMagic.cpp
--- a/llvm/unittests/BinaryFormat/TestFileMagic.cpp
+++ b/llvm/unittests/BinaryFormat/TestFileMagic.cpp
@@ -54,6 +54,7 @@
 const char coff_import_library[] = "\x00\x00\xff\xff....";
 const char elf_relocatable[] = {0x7f, 'E', 'L', 'F', 1, 2, 1, 0, 0,
                                 0,    0,   0,   0,   0, 0, 0, 0, 1};
+const char goff_object[] = "\x03\xF0\x00";
 const char macho_universal_binary[] = "\xca\xfe\xba\xbe...\x00";
 const char macho_object[] =
     "\xfe\xed\xfa\xce........\x00\x00\x00\x01............";
@@ -100,6 +101,7 @@
        file_magic::coff_object},
       DEFINE(coff_import_library),
       DEFINE(elf_relocatable),
+      DEFINE(goff_object),
       DEFINE(macho_universal_binary),
       DEFINE(macho_object),
       DEFINE(macho_executable),
diff --git a/llvm/unittests/Object/CMakeLists.txt b/llvm/unittests/Object/CMakeLists.txt
--- a/llvm/unittests/Object/CMakeLists.txt
+++ b/llvm/unittests/Object/CMakeLists.txt
@@ -9,6 +9,7 @@
   ELFObjectFileTest.cpp
   ELFTypesTest.cpp
   ELFTest.cpp
+  GOFFObjectFileTest.cpp
   MinidumpTest.cpp
   ObjectFileTest.cpp
   SymbolSizeTest.cpp
diff --git a/llvm/unittests/Object/GOFFObjectFileTest.cpp b/llvm/unittests/Object/GOFFObjectFileTest.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/unittests/Object/GOFFObjectFileTest.cpp
@@ -0,0 +1,499 @@
+//===- GOFFObjectFileTest.cpp - Tests for GOFFObjectFile ------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/GOFFObjectFile.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Testing/Support/Error.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::GOFF;
+
+namespace {
+char GOFFData[GOFF::RecordLength * 3] = {0x00};
+
+void constructValidGOFF(size_t Size) {
+  StringRef ValidSize(GOFFData, Size);
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(ValidSize, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+}
+
+void constructInvalidGOFF(size_t Size) {
+  // Construct GOFFObject with record of length != multiple of 80.
+  StringRef InvalidData(GOFFData, Size);
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(InvalidData, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(
+      GOFFObjOrErr,
+      FailedWithMessage("object file is not the right size. Must be a multiple "
+                        "of 80 bytes, but is " +
+                        std::to_string(Size) + " bytes"));
+}
+} // namespace
+
+TEST(GOFFObjectFileTest, ConstructGOFFObjectValidSize) {
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+  GOFFData[80] = 0x03;
+  GOFFData[81] = 0x40;
+  constructValidGOFF(160);
+  constructValidGOFF(0);
+}
+
+TEST(GOFFObjectFileTest, ConstructGOFFObjectInvalidSize) {
+  constructInvalidGOFF(70);
+  constructInvalidGOFF(79);
+  constructInvalidGOFF(81);
+}
+
+TEST(GOFFObjectFileTest, MissingHDR) {
+  char GOFFData[GOFF::RecordLength * 2] = {0x00};
+
+  // ESD record.
+  GOFFData[0] = 0x03;
+
+  // END record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  GOFFData[GOFF::RecordLength + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 2);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(
+      GOFFObjOrErr,
+      FailedWithMessage("object file must start with HDR record"));
+}
+
+TEST(GOFFObjectFileTest, MissingEND) {
+  char GOFFData[GOFF::RecordLength * 2] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+
+  // ESD record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 2);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(
+      GOFFObjOrErr, FailedWithMessage("object file must end with END record"));
+}
+
+TEST(GOFFObjectFileTest, GetSymbolName) {
+  char GOFFData[GOFF::RecordLength * 3] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+
+  // ESD record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  GOFFData[GOFF::RecordLength + 3] = 0x02;
+  GOFFData[GOFF::RecordLength + 7] = 0x01;
+  GOFFData[GOFF::RecordLength + 11] = 0x01;
+  GOFFData[GOFF::RecordLength + 71] = 0x05; // Size of symbol name.
+  GOFFData[GOFF::RecordLength + 72] = 0xC8; // Symbol name is Hello.
+  GOFFData[GOFF::RecordLength + 73] = 0x85;
+  GOFFData[GOFF::RecordLength + 74] = 0x93;
+  GOFFData[GOFF::RecordLength + 75] = 0x93;
+  GOFFData[GOFF::RecordLength + 76] = 0x96;
+
+  // END record.
+  GOFFData[GOFF::RecordLength * 2] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 3);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<StringRef> SymbolNameOrErr = GOFFObj->getSymbolName(Symbol);
+    ASSERT_THAT_EXPECTED(SymbolNameOrErr, Succeeded());
+    StringRef SymbolName = SymbolNameOrErr.get();
+
+    EXPECT_EQ(SymbolName, "Hello");
+  }
+}
+
+TEST(GOFFObjectFileTest, ConcatenatedGOFFFile) {
+  char GOFFData[GOFF::RecordLength * 6] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+  // ESD record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  // END record.
+  GOFFData[GOFF::RecordLength * 2] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 1] = 0x40;
+  // HDR record.
+  GOFFData[GOFF::RecordLength * 3] = 0x03;
+  GOFFData[GOFF::RecordLength * 3 + 1] = 0xF0;
+  // ESD record.
+  GOFFData[GOFF::RecordLength * 4] = 0x03;
+  // END record.
+  GOFFData[GOFF::RecordLength * 5] = 0x03;
+  GOFFData[GOFF::RecordLength * 5 + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 6);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+}
+
+TEST(GOFFObjectFileTest, ContinuationGetSymbolName) {
+  char GOFFContData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFContData[0] = 0x03;
+  GOFFContData[1] = 0xF0;
+
+  // ESD record.
+  GOFFContData[GOFF::RecordLength] = 0x03;
+  GOFFContData[GOFF::RecordLength + 1] = 0x01;
+  GOFFContData[GOFF::RecordLength + 3] = 0x02;
+  GOFFContData[GOFF::RecordLength + 7] = 0x01;
+  GOFFContData[GOFF::RecordLength + 11] = 0x01;
+  GOFFContData[GOFF::RecordLength + 71] = 0x0A; // Size of symbol name.
+  GOFFContData[GOFF::RecordLength + 72] = 0xC8; // Symbol name is HelloWorld.
+  GOFFContData[GOFF::RecordLength + 73] = 0x85;
+  GOFFContData[GOFF::RecordLength + 74] = 0x93;
+  GOFFContData[GOFF::RecordLength + 75] = 0x93;
+  GOFFContData[GOFF::RecordLength + 76] = 0x96;
+  GOFFContData[GOFF::RecordLength + 77] = 0xA6;
+  GOFFContData[GOFF::RecordLength + 78] = 0x96;
+  GOFFContData[GOFF::RecordLength + 79] = 0x99;
+
+  // ESD continuation record.
+  GOFFContData[GOFF::RecordLength * 2] = 0x03;
+  GOFFContData[GOFF::RecordLength * 2 + 1] = 0x02; // No further continuations.
+  GOFFContData[GOFF::RecordLength * 2 + 3] = 0x93;
+  GOFFContData[GOFF::RecordLength * 2 + 4] = 0x84;
+
+  // END record.
+  GOFFContData[GOFF::RecordLength * 3] = 0x03;
+  GOFFContData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFContData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<StringRef> SymbolNameOrErr = GOFFObj->getSymbolName(Symbol);
+    ASSERT_THAT_EXPECTED(SymbolNameOrErr, Succeeded());
+    StringRef SymbolName = SymbolNameOrErr.get();
+    EXPECT_EQ(SymbolName, "Helloworld");
+  }
+}
+
+TEST(GOFFObjectFileTest, ContinuationBitNotSet) {
+  char GOFFContData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFContData[0] = 0x03;
+  GOFFContData[1] = 0xF0;
+
+  // ESD record.
+  GOFFContData[GOFF::RecordLength] = 0x03;
+  GOFFContData[GOFF::RecordLength + 1] = 0x01;
+  GOFFContData[GOFF::RecordLength + 3] = 0x02;
+  GOFFContData[GOFF::RecordLength + 7] = 0x01;
+  GOFFContData[GOFF::RecordLength + 11] = 0x01;
+  GOFFContData[GOFF::RecordLength + 71] = 0x0A; // Size of symbol name.
+  GOFFContData[GOFF::RecordLength + 72] = 0xC8; // Symbol name is HelloWorld.
+  GOFFContData[GOFF::RecordLength + 73] = 0x85;
+  GOFFContData[GOFF::RecordLength + 74] = 0x93;
+  GOFFContData[GOFF::RecordLength + 75] = 0x93;
+  GOFFContData[GOFF::RecordLength + 76] = 0x96;
+  GOFFContData[GOFF::RecordLength + 77] = 0xA6;
+  GOFFContData[GOFF::RecordLength + 78] = 0x96;
+  GOFFContData[GOFF::RecordLength + 79] = 0x99;
+
+  // ESD continuation record.
+  GOFFContData[GOFF::RecordLength * 2] = 0x03;
+  GOFFContData[GOFF::RecordLength * 2 + 1] = 0x00;
+  GOFFContData[GOFF::RecordLength * 2 + 3] = 0x93;
+  GOFFContData[GOFF::RecordLength * 2 + 4] = 0x84;
+
+  // END record.
+  GOFFContData[GOFF::RecordLength * 3] = 0x03;
+  GOFFContData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFContData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+  EXPECT_THAT_EXPECTED(
+      GOFFObjOrErr,
+      FailedWithMessage(
+          "continued record is not followed by a continuation record"));
+}
+
+TEST(GOFFObjectFileTest, ContinuationRecordNotTerminated) {
+  char GOFFContData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFContData[0] = 0x03;
+  GOFFContData[1] = 0xF0;
+
+  // ESD record.
+  GOFFContData[GOFF::RecordLength] = 0x03;
+  GOFFContData[GOFF::RecordLength + 1] = 0x01;
+  GOFFContData[GOFF::RecordLength + 3] = 0x02;
+  GOFFContData[GOFF::RecordLength + 7] = 0x01;
+  GOFFContData[GOFF::RecordLength + 11] = 0x01;
+  GOFFContData[GOFF::RecordLength + 71] = 0x0A; // Size of symbol name.
+  GOFFContData[GOFF::RecordLength + 72] = 0xC8; // Symbol name is HelloWorld.
+  GOFFContData[GOFF::RecordLength + 73] = 0x85;
+  GOFFContData[GOFF::RecordLength + 74] = 0x93;
+  GOFFContData[GOFF::RecordLength + 75] = 0x93;
+  GOFFContData[GOFF::RecordLength + 76] = 0x96;
+  GOFFContData[GOFF::RecordLength + 77] = 0xA6;
+  GOFFContData[GOFF::RecordLength + 78] = 0x96;
+  GOFFContData[GOFF::RecordLength + 79] = 0x99;
+
+  // ESD continuation record.
+  GOFFContData[GOFF::RecordLength * 2] = 0x03;
+  GOFFContData[GOFF::RecordLength * 2 + 1] = 0x03; // Continued bit set.
+  GOFFContData[GOFF::RecordLength * 2 + 3] = 0x93;
+  GOFFContData[GOFF::RecordLength * 2 + 4] = 0x84;
+
+  // END record.
+  GOFFContData[GOFF::RecordLength * 3] = 0x03;
+  GOFFContData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFContData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<StringRef> SymbolNameOrErr = GOFFObj->getSymbolName(Symbol);
+    EXPECT_THAT_EXPECTED(SymbolNameOrErr,
+                         FailedWithMessage("continued bit should not be set"));
+  }
+}
+
+TEST(GOFFObjectFileTest, PrevNotContinued) {
+  char GOFFContData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFContData[0] = 0x03;
+  GOFFContData[1] = 0xF0;
+
+  // ESD record, with continued bit not set.
+  GOFFContData[GOFF::RecordLength] = 0x03;
+
+  // ESD continuation record.
+  GOFFContData[GOFF::RecordLength * 2] = 0x03;
+  GOFFContData[GOFF::RecordLength * 2 + 1] = 0x02;
+
+  // END record.
+  GOFFContData[GOFF::RecordLength * 3] = 0x03;
+  GOFFContData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFContData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr,
+                       FailedWithMessage("previous record was not continued"));
+}
+
+TEST(GOFFObjectFileTest, ContinuationTypeMismatch) {
+  char GOFFContData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFContData[0] = 0x03;
+  GOFFContData[1] = 0xF0;
+
+  // ESD record.
+  GOFFContData[GOFF::RecordLength] = 0x03;
+  GOFFContData[GOFF::RecordLength + 1] = 0x01; // Continued to next record.
+
+  // END continuation record.
+  GOFFContData[GOFF::RecordLength * 2] = 0x03;
+  GOFFContData[GOFF::RecordLength * 2 + 1] = 0x42;
+
+  // END record.
+  GOFFContData[GOFF::RecordLength * 3] = 0x03;
+  GOFFContData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFContData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(
+      GOFFObjOrErr,
+      FailedWithMessage(
+          "continuation record type does not match previous record"));
+}
+
+TEST(GOFFObjectFileTest, TwoSymbols) {
+  char GOFFData[GOFF::RecordLength * 4] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+
+  // ESD record 1.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  GOFFData[GOFF::RecordLength + 3] = 0x00;
+  GOFFData[GOFF::RecordLength + 7] = 0x01;  // ESDID.
+  GOFFData[GOFF::RecordLength + 71] = 0x01; // Size of symbol name.
+  GOFFData[GOFF::RecordLength + 72] = 0xa7; // Symbol name is x.
+
+  // ESD record 2.
+  GOFFData[GOFF::RecordLength * 2] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 3] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 7] = 0x02;  // ESDID.
+  GOFFData[GOFF::RecordLength * 2 + 11] = 0x01; // Parent ESDID.
+  GOFFData[GOFF::RecordLength * 2 + 71] = 0x05; // Size of symbol name.
+  GOFFData[GOFF::RecordLength * 2 + 72] = 0xC8; // Symbol name is Hello.
+  GOFFData[GOFF::RecordLength * 2 + 73] = 0x85;
+  GOFFData[GOFF::RecordLength * 2 + 74] = 0x93;
+  GOFFData[GOFF::RecordLength * 2 + 75] = 0x93;
+  GOFFData[GOFF::RecordLength * 2 + 76] = 0x96;
+
+  // END record.
+  GOFFData[GOFF::RecordLength * 3] = 0x03;
+  GOFFData[GOFF::RecordLength * 3 + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 4);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<StringRef> SymbolNameOrErr = GOFFObj->getSymbolName(Symbol);
+    ASSERT_THAT_EXPECTED(SymbolNameOrErr, Succeeded());
+    StringRef SymbolName = SymbolNameOrErr.get();
+    EXPECT_EQ(SymbolName, "Hello");
+  }
+}
+
+TEST(GOFFObjectFileTest, InvalidSymbolType) {
+  char GOFFData[GOFF::RecordLength * 3] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+
+  // ESD record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  GOFFData[GOFF::RecordLength + 3] = 0x05;
+  GOFFData[GOFF::RecordLength + 7] = 0x01;
+  GOFFData[GOFF::RecordLength + 11] = 0x01;
+  GOFFData[GOFF::RecordLength + 71] = 0x01; // Size of symbol name.
+  GOFFData[GOFF::RecordLength + 72] = 0xC8; // Symbol name.
+
+  // END record.
+  GOFFData[GOFF::RecordLength * 2] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 3);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<SymbolRef::Type> SymbolType = Symbol.getType();
+    EXPECT_THAT_EXPECTED(
+        SymbolType,
+        FailedWithMessage("ESD record 1 has invalid symbol type 0x05"));
+
+    Expected<section_iterator> SymSI = Symbol.getSection();
+    ASSERT_THAT_EXPECTED(SymSI, FailedWithMessage("no symbol section found"));
+  }
+}
+
+TEST(GOFFObjectFileTest, InvalidERSymbolType) {
+  char GOFFData[GOFF::RecordLength * 3] = {0x00};
+
+  // HDR record.
+  GOFFData[0] = 0x03;
+  GOFFData[1] = 0xF0;
+
+  // ESD record.
+  GOFFData[GOFF::RecordLength] = 0x03;
+  GOFFData[GOFF::RecordLength + 3] = 0x04;
+  GOFFData[GOFF::RecordLength + 7] = 0x01;
+  GOFFData[GOFF::RecordLength + 11] = 0x01;
+  GOFFData[GOFF::RecordLength + 63] = 0x03; // Unknown executable type.
+  GOFFData[GOFF::RecordLength + 71] = 0x01; // Size of symbol name.
+  GOFFData[GOFF::RecordLength + 72] = 0xC8; // Symbol name.
+
+  // END record.
+  GOFFData[GOFF::RecordLength * 2] = 0x03;
+  GOFFData[GOFF::RecordLength * 2 + 1] = 0x40;
+
+  StringRef Data(GOFFData, GOFF::RecordLength * 3);
+
+  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
+      object::ObjectFile::createGOFFObjectFile(
+          MemoryBufferRef(Data, "dummyGOFF"));
+
+  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
+
+  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
+
+  for (SymbolRef Symbol : GOFFObj->symbols()) {
+    Expected<SymbolRef::Type> SymbolType = Symbol.getType();
+    EXPECT_THAT_EXPECTED(
+        SymbolType,
+        FailedWithMessage("ESD record 1 has unknown Executable type 0x03"));
+  }
+}