Don't override subreg functions in targets without subregisters.

[oota-llvm.git] / include / llvm / ExecutionEngine / RuntimeDyld.h

diff --git a/include/llvm/ExecutionEngine/RuntimeDyld.h b/include/llvm/ExecutionEngine/RuntimeDyld.h
index 6e18c7cfca52e97afb62a16ceb469c90878b218f..a5c9272d3ca629cdef50b63208f5979ecd4ba0a7 100644 (file)
--- a/include/llvm/ExecutionEngine/RuntimeDyld.h
+++ b/include/llvm/ExecutionEngine/RuntimeDyld.h
@@ -35,15 +35,18 @@ public:
   RTDyldMemoryManager() {}
   virtual ~RTDyldMemoryManager();
 
-  // Allocate ActualSize bytes, or more, for the named function. Return
-  // a pointer to the allocated memory and update Size to reflect how much
-  // memory was acutally allocated.
-  virtual uint64_t startFunctionBody(const char *Name, uintptr_t &Size) = 0;
-
-  // Mark the end of the function, including how much of the allocated
-  // memory was actually used.
-  virtual void endFunctionBody(const char *Name, uint64_t FunctionStart,
-                               uint64_t FunctionEnd) = 0;
+  /// allocateCodeSection - Allocate a memory block of (at least) the given
+  /// size suitable for executable code.
+  virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
+                                       unsigned SectionID) = 0;
+
+  /// allocateDataSection - Allocate a memory block of (at least) the given
+  /// size suitable for data.
+  virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
+                                       unsigned SectionID) = 0;
+
+  virtual void *getPointerToNamedFunction(const std::string &Name,
+                                          bool AbortOnFailure = true) = 0;
 };
 
 class RuntimeDyld {
@@ -53,16 +56,32 @@ class RuntimeDyld {
   // RuntimeDyldImpl is the actual class. RuntimeDyld is just the public
   // interface.
   RuntimeDyldImpl *Dyld;
+  RTDyldMemoryManager *MM;
+protected:
+  // Change the address associated with a section when resolving relocations.
+  // Any relocations already associated with the symbol will be re-resolved.
+  void reassignSectionAddress(unsigned SectionID, uint64_t Addr);
 public:
   RuntimeDyld(RTDyldMemoryManager*);
   ~RuntimeDyld();
 
+  /// Load an in-memory object file into the dynamic linker.
   bool loadObject(MemoryBuffer *InputBuffer);
-  uint64_t getSymbolAddress(StringRef Name);
-  void reassignSymbolAddress(StringRef Name, uint64_t Addr);
-  // FIXME: Should be parameterized to get the memory block associated with
-  // a particular loaded object.
-  sys::MemoryBlock getMemoryBlock();
+
+  /// Get the address of our local copy of the symbol. This may or may not
+  /// be the address used for relocation (clients can copy the data around
+  /// and resolve relocatons based on where they put it).
+  void *getSymbolAddress(StringRef Name);
+
+  /// Resolve the relocations for all symbols we currently know about.
+  void resolveRelocations();
+
+  /// mapSectionAddress - map a section to its target address space value.
+  /// Map the address of a JIT section as returned from the memory manager
+  /// to the address in the target process as the running code will see it.
+  /// This is the address which will be used for relocation resolution.
+  void mapSectionAddress(void *LocalAddress, uint64_t TargetAddress);
+
   StringRef getErrorString();
 };