MC: Add WinCOFFObjectWriter implementation.

Origonal Windows COFF implementation by Nathan Jedffords.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109389 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 53 insertions, 1 deletions

diff --git a/include/llvm/Support/COFF.h b/include/llvm/Support/COFF.h
index 69137bff71..5af4b29bca 100644
--- a/include/llvm/Support/COFF.h
+++ b/include/llvm/Support/COFF.h
@@ -202,7 +202,7 @@ namespace COFF {
     IMAGE_REL_I386_REL32    = 0x0014
   };
 
-  enum {
+  enum COMDATType {
     IMAGE_COMDAT_SELECT_NODUPLICATES = 1,
     IMAGE_COMDAT_SELECT_ANY,
     IMAGE_COMDAT_SELECT_SAME_SIZE,
@@ -211,6 +211,58 @@ namespace COFF {
     IMAGE_COMDAT_SELECT_LARGEST
   };
 
+  // Auxiliary Symbol Formats
+  struct AuxiliaryFunctionDefinition {
+    uint32_t TagIndex;
+    uint32_t TotalSize;
+    uint32_t PointerToLinenumber;
+    uint32_t PointerToNextFunction;
+    uint8_t  unused[2];
+  };
+
+  struct AuxiliarybfAndefSymbol {
+    uint8_t  unused1[4];
+    uint16_t Linenumber;
+    uint8_t  unused2[6];
+    uint32_t PointerToNextFunction;
+    uint8_t  unused3[2];
+  };
+
+  struct AuxiliaryWeakExternal {
+    uint32_t TagIndex;
+    uint32_t Characteristics;
+    uint8_t  unused[10];
+  };
+
+  /// These are not documented in the spec, but are located in WinNT.h.
+  enum WeakExternalCharacteristics {
+    IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY = 1,
+    IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   = 2,
+    IMAGE_WEAK_EXTERN_SEARCH_ALIAS     = 3
+  };
+
+  struct AuxiliaryFile {
+    uint8_t FileName[18];
+  };
+
+  struct AuxiliarySectionDefinition {
+    uint32_t Length;
+    uint16_t NumberOfRelocations;
+    uint16_t NumberOfLinenumbers;
+    uint32_t CheckSum;
+    uint16_t Number;
+    uint8_t  Selection;
+    uint8_t  unused[3];
+  };
+
+  union Auxiliary {
+    AuxiliaryFunctionDefinition FunctionDefinition;
+    AuxiliarybfAndefSymbol      bfAndefSymbol;
+    AuxiliaryWeakExternal       WeakExternal;
+    AuxiliaryFile               File;
+    AuxiliarySectionDefinition  SectionDefinition;
+  };
+
 } // End namespace llvm.
 } // End namespace COFF.