1 files changed, 21 insertions, 0 deletions
diff --git a/include/llvm/MC/MCContext.h b/include/llvm/MC/MCContext.h
index 17e79fb1e9..6686950b72 100644
--- a/include/llvm/MC/MCContext.h
+++ b/include/llvm/MC/MCContext.h
@@ -11,6 +11,7 @@
 #define LLVM_MC_MCCONTEXT_H
 
 #include "llvm/MC/SectionKind.h"
+#include "llvm/MC/MCDwarf.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Support/Allocator.h"
@@ -24,6 +25,7 @@ namespace llvm {
   class MCSymbol;
   class MCLabel;
   class MCDwarfFile;
+  class MCDwarfLoc;
   class StringRef;
   class Twine;
   class MCSectionMachO;
@@ -69,6 +71,10 @@ namespace llvm {
     std::vector<MCDwarfFile *> MCDwarfFiles;
     std::vector<StringRef> MCDwarfDirs;
 
+    /// The current dwarf line information from the last dwarf .loc directive.
+    MCDwarfLoc CurrentDwarfLoc;
+    bool DwarfLocSeen;
+
     /// Allocator - Allocator object used for creating machine code objects.
     ///
     /// We use a bump pointer allocator to avoid the need to track all allocated
@@ -149,6 +155,8 @@ namespace llvm {
     /// GetDwarfFile - creates an entry in the dwarf file and directory tables.
     unsigned GetDwarfFile(StringRef FileName, unsigned FileNumber);
 
+    bool ValidateDwarfFileNumber(unsigned FileNumber);
+
     const std::vector<MCDwarfFile *> &getMCDwarfFiles() {
       return MCDwarfFiles;
     }
@@ -156,6 +164,19 @@ namespace llvm {
       return MCDwarfDirs;
     }
 
+    /// setCurrentDwarfLoc - saves the information from the currently parsed
+    /// dwarf .loc directive and sets DwarfLocSeen.  When the next instruction      /// is assembled an entry in the line number table with this information and
+    /// the address of the instruction will be created.
+    void setCurrentDwarfLoc(unsigned FileNum, unsigned Line, unsigned Column,
+                            unsigned Flags, unsigned Isa) {
+      CurrentDwarfLoc.setFileNum(FileNum);
+      CurrentDwarfLoc.setLine(Line);
+      CurrentDwarfLoc.setColumn(Column);
+      CurrentDwarfLoc.setFlags(Flags);
+      CurrentDwarfLoc.setIsa(Isa);
+      DwarfLocSeen = true;
+    }
+
     /// @}
 
     char *getSecureLogFile() { return SecureLogFile; }