Initial import of the Apple clang-425.0.24 branch

lib/Support/MemoryObject.cpp

@@ -0,0 +1,37 @@
+//===- MemoryObject.cpp - Abstract memory interface -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/MemoryObject.h"
+using namespace llvm;
+  
+MemoryObject::~MemoryObject() {
+}
+
+int MemoryObject::readBytes(uint64_t address,
+                            uint64_t size,
+                            uint8_t* buf,
+                            uint64_t* copied) const {
+  uint64_t current = address;
+  uint64_t limit = getBase() + getExtent();
+
+  if (current + size > limit)
+    return -1;
+
+  while (current - address < size) {
+    if (readByte(current, &buf[(current - address)]))
+      return -1;
+    
+    current++;
+  }
+  
+  if (copied)
+    *copied = current - address;
+  
+  return 0;
+}