Revert "[SystemZ][z/OS] TXT records in the GOFF reader (#74526)"

This reverts commit 009f88fc0e3a036be97ef7b222b90af342bae0b7.

Reverting PR due to test failure.

4 files changed, 14 insertions, 178 deletions

diff --git a/llvm/include/llvm/Object/GOFF.h b/llvm/include/llvm/Object/GOFF.h
index 9fb8876..9176245 100644
--- a/llvm/include/llvm/Object/GOFF.h
+++ b/llvm/include/llvm/Object/GOFF.h
@@ -73,26 +73,6 @@ protected:
   }
 };
 
-class TXTRecord : public Record {
-public:
-  /// \brief Maximum length of data; any more must go in continuation.
-  static const uint8_t TXTMaxDataLength = 56;
-
-  static Error getData(const uint8_t *Record, SmallString<256> &CompleteData);
-
-  static void getElementEsdId(const uint8_t *Record, uint32_t &EsdId) {
-    get<uint32_t>(Record, 4, EsdId);
-  }
-
-  static void getOffset(const uint8_t *Record, uint32_t &Offset) {
-    get<uint32_t>(Record, 12, Offset);
-  }
-
-  static void getDataLength(const uint8_t *Record, uint16_t &Length) {
-    get<uint16_t>(Record, 22, Length);
-  }
-};
-
 class HDRRecord : public Record {
 public:
   static Error getData(const uint8_t *Record, SmallString<256> &CompleteData);
diff --git a/llvm/include/llvm/Object/GOFFObjectFile.h b/llvm/include/llvm/Object/GOFFObjectFile.h
index 6871641..7e1ceb9 100644
--- a/llvm/include/llvm/Object/GOFFObjectFile.h
+++ b/llvm/include/llvm/Object/GOFFObjectFile.h
@@ -29,10 +29,7 @@ namespace llvm {
 namespace object {
 
 class GOFFObjectFile : public ObjectFile {
-  friend class GOFFSymbolRef;
-
   IndexedMap<const uint8_t *> EsdPtrs; // Indexed by EsdId.
-  SmallVector<const uint8_t *, 256> TextPtrs;
 
   mutable DenseMap<uint32_t, std::pair<size_t, std::unique_ptr<char[]>>>
       EsdNamesCache;
@@ -41,7 +38,7 @@ class GOFFObjectFile : public ObjectFile {
   // (EDID, 0)               code, r/o data section
   // (EDID,PRID)             r/w data section
   SmallVector<SectionEntryImpl, 256> SectionList;
-  mutable DenseMap<uint32_t, SmallVector<uint8_t>> SectionDataCache;
+  mutable DenseMap<uint32_t, std::string> SectionDataCache;
 
 public:
   Expected<StringRef> getSymbolName(SymbolRef Symbol) const;
@@ -69,10 +66,6 @@ public:
     return true;
   }
 
-  bool isSectionNoLoad(DataRefImpl Sec) const;
-  bool isSectionReadOnlyData(DataRefImpl Sec) const;
-  bool isSectionZeroInit(DataRefImpl Sec) const;
-
 private:
   // SymbolRef.
   Expected<StringRef> getSymbolName(DataRefImpl Symb) const override;
@@ -82,24 +75,27 @@ private:
   Expected<uint32_t> getSymbolFlags(DataRefImpl Symb) const override;
   Expected<SymbolRef::Type> getSymbolType(DataRefImpl Symb) const override;
   Expected<section_iterator> getSymbolSection(DataRefImpl Symb) const override;
-  uint64_t getSymbolSize(DataRefImpl Symb) const;
 
   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;
-  uint64_t getSectionAddress(DataRefImpl Sec) const override;
-  uint64_t getSectionSize(DataRefImpl Sec) const override;
+  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;
-  uint64_t getSectionIndex(DataRefImpl Sec) const override { return Sec.d.a; }
-  uint64_t getSectionAlignment(DataRefImpl Sec) const override;
+  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;
-  bool isSectionData(DataRefImpl Sec) const override;
+  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 {
@@ -113,7 +109,6 @@ private:
   const uint8_t *getSectionPrEsdRecord(DataRefImpl &Sec) const;
   const uint8_t *getSectionEdEsdRecord(uint32_t SectionIndex) const;
   const uint8_t *getSectionPrEsdRecord(uint32_t SectionIndex) const;
-  uint32_t getSectionDefEsdId(DataRefImpl &Sec) const;
 
   // RelocationRef.
   void moveRelocationNext(DataRefImpl &Rel) const override {}
@@ -127,29 +122,6 @@ private:
                              SmallVectorImpl<char> &Result) const override {}
 };
 
-class GOFFSymbolRef : public SymbolRef {
-public:
-  GOFFSymbolRef(const SymbolRef &B) : SymbolRef(B) {
-    assert(isa<GOFFObjectFile>(SymbolRef::getObject()));
-  }
-
-  const GOFFObjectFile *getObject() const {
-    return cast<GOFFObjectFile>(BasicSymbolRef::getObject());
-  }
-
-  Expected<uint32_t> getSymbolGOFFFlags() const {
-    return getObject()->getSymbolFlags(getRawDataRefImpl());
-  }
-
-  Expected<SymbolRef::Type> getSymbolGOFFType() const {
-    return getObject()->getSymbolType(getRawDataRefImpl());
-  }
-
-  uint64_t getSize() const {
-    return getObject()->getSymbolSize(getRawDataRefImpl());
-  }
-};
-
 } // namespace object
 
 } // namespace llvm
diff --git a/llvm/lib/Object/GOFFObjectFile.cpp b/llvm/lib/Object/GOFFObjectFile.cpp
index 2845d93..d8e1ddf 100644
--- a/llvm/lib/Object/GOFFObjectFile.cpp
+++ b/llvm/lib/Object/GOFFObjectFile.cpp
@@ -168,11 +168,6 @@ GOFFObjectFile::GOFFObjectFile(MemoryBufferRef Object, Error &Err)
       LLVM_DEBUG(dbgs() << "  --  ESD " << EsdId << "\n");
       break;
     }
-    case GOFF::RT_TXT:
-      // Save TXT records.
-      TextPtrs.emplace_back(I);
-      LLVM_DEBUG(dbgs() << "  --  TXT\n");
-      break;
     case GOFF::RT_END:
       LLVM_DEBUG(dbgs() << "  --  END (GOFF record type) unhandled\n");
       break;
@@ -369,13 +364,6 @@ GOFFObjectFile::getSymbolSection(DataRefImpl Symb) const {
                                std::to_string(SymEdId));
 }
 
-uint64_t GOFFObjectFile::getSymbolSize(DataRefImpl Symb) const {
-  const uint8_t *Record = getSymbolEsdRecord(Symb);
-  uint32_t Length;
-  ESDRecord::getLength(Record, Length);
-  return Length;
-}
-
 const uint8_t *GOFFObjectFile::getSectionEdEsdRecord(DataRefImpl &Sec) const {
   SectionEntryImpl EsdIds = SectionList[Sec.d.a];
   const uint8_t *EsdRecord = EsdPtrs[EsdIds.d.a];
@@ -636,13 +624,6 @@ Error ESDRecord::getData(const uint8_t *Record,
   return getContinuousData(Record, DataSize, 72, CompleteData);
 }
 
-Error TXTRecord::getData(const uint8_t *Record,
-                         SmallString<256> &CompleteData) {
-  uint16_t Length;
-  getDataLength(Record, Length);
-  return getContinuousData(Record, Length, 24, CompleteData);
-}
-
 Error ENDRecord::getData(const uint8_t *Record,
                          SmallString<256> &CompleteData) {
   uint16_t Length = getNameLength(Record);
diff --git a/llvm/unittests/Object/GOFFObjectFileTest.cpp b/llvm/unittests/Object/GOFFObjectFileTest.cpp
index 69f60d0..734dac6 100644
--- a/llvm/unittests/Object/GOFFObjectFileTest.cpp
+++ b/llvm/unittests/Object/GOFFObjectFileTest.cpp
@@ -502,100 +502,3 @@ TEST(GOFFObjectFileTest, InvalidERSymbolType) {
         FailedWithMessage("ESD record 1 has unknown Executable type 0x03"));
   }
 }
-
-TEST(GOFFObjectFileTest, TXTConstruct) {
-  char GOFFData[GOFF::RecordLength * 6] = {};
-
-  // HDR record.
-  GOFFData[0] = 0x03;
-  GOFFData[1] = 0xF0;
-  GOFFData[50] = 0x01;
-
-  // ESD record.
-  GOFFData[GOFF::RecordLength] = 0x03;
-  GOFFData[GOFF::RecordLength + 7] = 0x01;  // ESDID.
-  GOFFData[GOFF::RecordLength + 71] = 0x05; // Size of symbol name.
-  GOFFData[GOFF::RecordLength + 72] = 0xa5; // Symbol name is v.
-  GOFFData[GOFF::RecordLength + 73] = 0x81; // Symbol name is a.
-  GOFFData[GOFF::RecordLength + 74] = 0x99; // Symbol name is r.
-  GOFFData[GOFF::RecordLength + 75] = 0x7b; // Symbol name is #.
-  GOFFData[GOFF::RecordLength + 76] = 0x83; // Symbol name is c.
-
-  // ESD record.
-  GOFFData[GOFF::RecordLength * 2] = 0x03;
-  GOFFData[GOFF::RecordLength * 2 + 3] = 0x01;
-  GOFFData[GOFF::RecordLength * 2 + 7] = 0x02;  // ESDID.
-  GOFFData[GOFF::RecordLength * 2 + 11] = 0x01; // Parent ESDID.
-  GOFFData[GOFF::RecordLength * 2 + 27] = 0x08; // Length.
-  GOFFData[GOFF::RecordLength * 2 + 40] = 0x01; // Name Space ID.
-  GOFFData[GOFF::RecordLength * 2 + 41] = 0x80;
-  GOFFData[GOFF::RecordLength * 2 + 60] = 0x04; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 2 + 61] = 0x04; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 2 + 63] = 0x0a; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 2 + 66] = 0x03; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 2 + 71] = 0x08; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 2 + 72] = 0xc3; // Symbol name is c.
-  GOFFData[GOFF::RecordLength * 2 + 73] = 0x6d; // Symbol name is _.
-  GOFFData[GOFF::RecordLength * 2 + 74] = 0xc3; // Symbol name is c.
-  GOFFData[GOFF::RecordLength * 2 + 75] = 0xd6; // Symbol name is o.
-  GOFFData[GOFF::RecordLength * 2 + 76] = 0xc4; // Symbol name is D.
-  GOFFData[GOFF::RecordLength * 2 + 77] = 0xc5; // Symbol name is E.
-  GOFFData[GOFF::RecordLength * 2 + 78] = 0xf6; // Symbol name is 6.
-  GOFFData[GOFF::RecordLength * 2 + 79] = 0xf4; // Symbol name is 4.
-
-  // ESD record.
-  GOFFData[GOFF::RecordLength * 3] = 0x03;
-  GOFFData[GOFF::RecordLength * 3 + 3] = 0x02;
-  GOFFData[GOFF::RecordLength * 3 + 7] = 0x03;  // ESDID.
-  GOFFData[GOFF::RecordLength * 3 + 11] = 0x02; // Parent ESDID.
-  GOFFData[GOFF::RecordLength * 3 + 71] = 0x05; // Size of symbol name.
-  GOFFData[GOFF::RecordLength * 3 + 72] = 0xa5; // Symbol name is v.
-  GOFFData[GOFF::RecordLength * 3 + 73] = 0x81; // Symbol name is a.
-  GOFFData[GOFF::RecordLength * 3 + 74] = 0x99; // Symbol name is r.
-  GOFFData[GOFF::RecordLength * 3 + 75] = 0x7b; // Symbol name is #.
-  GOFFData[GOFF::RecordLength * 3 + 76] = 0x83; // Symbol name is c.
-
-  // TXT record.
-  GOFFData[GOFF::RecordLength * 4] = 0x03;
-  GOFFData[GOFF::RecordLength * 4 + 1] = 0x10;
-  GOFFData[GOFF::RecordLength * 4 + 7] = 0x02;
-  GOFFData[GOFF::RecordLength * 4 + 23] = 0x08; // Data Length.
-  GOFFData[GOFF::RecordLength * 4 + 24] = 0x12;
-  GOFFData[GOFF::RecordLength * 4 + 25] = 0x34;
-  GOFFData[GOFF::RecordLength * 4 + 26] = 0x56;
-  GOFFData[GOFF::RecordLength * 4 + 27] = 0x78;
-  GOFFData[GOFF::RecordLength * 4 + 28] = 0x9a;
-  GOFFData[GOFF::RecordLength * 4 + 29] = 0xbc;
-  GOFFData[GOFF::RecordLength * 4 + 30] = 0xde;
-  GOFFData[GOFF::RecordLength * 4 + 31] = 0xf0;
-
-  // END record.
-  GOFFData[GOFF::RecordLength * 5] = 0x03;
-  GOFFData[GOFF::RecordLength * 5 + 1] = 0x40;
-  GOFFData[GOFF::RecordLength * 5 + 11] = 0x06;
-
-  StringRef Data(GOFFData, GOFF::RecordLength * 6);
-
-  Expected<std::unique_ptr<ObjectFile>> GOFFObjOrErr =
-      object::ObjectFile::createGOFFObjectFile(
-          MemoryBufferRef(Data, "dummyGOFF"));
-
-  ASSERT_THAT_EXPECTED(GOFFObjOrErr, Succeeded());
-
-  GOFFObjectFile *GOFFObj = dyn_cast<GOFFObjectFile>((*GOFFObjOrErr).get());
-  auto Symbols = GOFFObj->symbols();
-  ASSERT_EQ(std::distance(Symbols.begin(), Symbols.end()), 1);
-  SymbolRef Symbol = *Symbols.begin();
-  Expected<StringRef> SymbolNameOrErr = GOFFObj->getSymbolName(Symbol);
-  ASSERT_THAT_EXPECTED(SymbolNameOrErr, Succeeded());
-  StringRef SymbolName = SymbolNameOrErr.get();
-  EXPECT_EQ(SymbolName, "var#c");
-
-  auto Sections = GOFFObj->sections();
-  ASSERT_EQ(std::distance(Sections.begin(), Sections.end()), 1);
-  SectionRef Section = *Sections.begin();
-  Expected<StringRef> SectionContent = Section.getContents();
-  ASSERT_THAT_EXPECTED(SectionContent, Succeeded());
-  StringRef Contents = SectionContent.get();
-  EXPECT_EQ(Contents, "\x12\x34\x56\x78\x9a\xbc\xde\xf0");
-}