Re-submit r191472 with a fix for big endian.

llvm-objdump: Dump COFF import table if -private-headers option is given.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191557 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 54 insertions, 2 deletions

diff --git a/include/llvm/Object/COFF.h b/include/llvm/Object/COFF.h
index cb464abeeb..838e8f199a 100644
--- a/include/llvm/Object/COFF.h
+++ b/include/llvm/Object/COFF.h
@@ -23,6 +23,8 @@ namespace llvm {
   class ArrayRef;
 
 namespace object {
+class ImportDirectoryEntryRef;
+typedef content_iterator<ImportDirectoryEntryRef> import_directory_iterator;
 
 /// The DOS compatible header at the front of all PE/COFF executables.
 struct dos_header {
@@ -137,6 +139,22 @@ struct import_directory_table_entry {
   support::ulittle32_t ImportAddressTableRVA;
 };
 
+struct import_lookup_table_entry32 {
+  support::ulittle32_t data;
+
+  bool isOrdinal() const { return data & 0x80000000; }
+
+  uint16_t getOrdinal() const {
+    assert(isOrdinal() && "ILT entry is not an ordinal!");
+    return data & 0xFFFF;
+  }
+
+  uint32_t getHintNameRVA() const {
+    assert(!isOrdinal() && "ILT entry is not a Hint/Name RVA!");
+    return data;
+  }
+};
+
 struct coff_symbol {
   struct StringTableOffset {
     support::ulittle32_t Zeroes;
@@ -202,6 +220,7 @@ struct coff_aux_section_definition {
 
 class COFFObjectFile : public ObjectFile {
 private:
+  friend class ImportDirectoryEntryRef;
   const coff_file_header *COFFHeader;
   const pe32_header      *PE32Header;
   const data_directory   *DataDirectory;
@@ -209,6 +228,8 @@ private:
   const coff_symbol      *SymbolTable;
   const char             *StringTable;
         uint32_t          StringTableSize;
+  const import_directory_table_entry *ImportDirectory;
+        uint32_t          NumberOfImportDirectory;
 
         error_code        getString(uint32_t offset, StringRef &Res) const;
 
@@ -216,6 +237,9 @@ private:
   const coff_section     *toSec(DataRefImpl Sec) const;
   const coff_relocation  *toRel(DataRefImpl Rel) const;
 
+        error_code        initSymbolTablePtr();
+        error_code        initImportTablePtr();
+
 protected:
   virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
   virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
@@ -287,6 +311,9 @@ public:
   virtual unsigned getArch() const;
   virtual StringRef getLoadName() const;
 
+  import_directory_iterator getImportDirectoryBegin() const;
+  import_directory_iterator getImportDirectoryEnd() const;
+
   error_code getHeader(const coff_file_header *&Res) const;
   error_code getCOFFHeader(const coff_file_header *&Res) const;
   error_code getPE32Header(const pe32_header *&Res) const;
@@ -307,12 +334,37 @@ public:
   error_code getSectionContents(const coff_section *Sec,
                                 ArrayRef<uint8_t> &Res) const;
 
+  error_code getRvaPtr(uint32_t Rva, uintptr_t &Res) const;
+  error_code getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const;
+
   static inline bool classof(const Binary *v) {
     return v->isCOFF();
   }
 };
 
-}
-}
+// The iterator for the import directory table.
+class ImportDirectoryEntryRef {
+public:
+  ImportDirectoryEntryRef() : OwningObject(0) {}
+  ImportDirectoryEntryRef(DataRefImpl ImportDirectory,
+                          const COFFObjectFile *Owner)
+      : ImportDirectoryPimpl(ImportDirectory), OwningObject(Owner) {}
+
+  bool operator==(const ImportDirectoryEntryRef &Other) const;
+  error_code getNext(ImportDirectoryEntryRef &Result) const;
+  error_code getName(StringRef &Result) const;
+
+  error_code
+  getImportTableEntry(const import_directory_table_entry *&Result) const;
+
+  error_code
+  getImportLookupEntry(const import_lookup_table_entry32 *&Result) const;
+
+private:
+  DataRefImpl ImportDirectoryPimpl;
+  const COFFObjectFile *OwningObject;
+};
+} // end namespace object
+} // end namespace llvm
 
 #endif