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+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_IC_INL_H_
+#define V8_IC_INL_H_
+
+#include "ic.h"
+#include "debug.h"
+#include "macro-assembler.h"
+
+namespace v8 {
+namespace internal {
+
+
+Address IC::address() {
+  // Get the address of the call.
+  Address result = pc() - Assembler::kCallTargetAddressOffset;
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  Debug* debug = Isolate::Current()->debug();
+  // First check if any break points are active if not just return the address
+  // of the call.
+  if (!debug->has_break_points()) return result;
+
+  // At least one break point is active perform additional test to ensure that
+  // break point locations are updated correctly.
+  if (debug->IsDebugBreak(Assembler::target_address_at(result))) {
+    // If the call site is a call to debug break then return the address in
+    // the original code instead of the address in the running code. This will
+    // cause the original code to be updated and keeps the breakpoint active in
+    // the running code.
+    return OriginalCodeAddress();
+  } else {
+    // No break point here just return the address of the call.
+    return result;
+  }
+#else
+  return result;
+#endif
+}
+
+
+Code* IC::GetTargetAtAddress(Address address) {
+  // Get the target address of the IC.
+  Address target = Assembler::target_address_at(address);
+  // Convert target address to the code object. Code::GetCodeFromTargetAddress
+  // is safe for use during GC where the map might be marked.
+  Code* result = Code::GetCodeFromTargetAddress(target);
+  ASSERT(result->is_inline_cache_stub());
+  return result;
+}
+
+
+void IC::SetTargetAtAddress(Address address, Code* target) {
+  ASSERT(target->is_inline_cache_stub() || target->is_compare_ic_stub());
+#ifdef DEBUG
+  // STORE_IC and KEYED_STORE_IC use Code::extra_ic_state() to mark
+  // ICs as strict mode. The strict-ness of the IC must be preserved.
+  Code* old_target = GetTargetAtAddress(address);
+  if (old_target->kind() == Code::STORE_IC ||
+      old_target->kind() == Code::KEYED_STORE_IC) {
+    ASSERT(old_target->extra_ic_state() == target->extra_ic_state());
+  }
+#endif
+  Assembler::set_target_address_at(address, target->instruction_start());
+}
+
+
+InlineCacheHolderFlag IC::GetCodeCacheForObject(Object* object,
+                                                JSObject* holder) {
+  if (object->IsJSObject()) {
+    return GetCodeCacheForObject(JSObject::cast(object), holder);
+  }
+  // If the object is a value, we use the prototype map for the cache.
+  ASSERT(object->IsString() || object->IsNumber() || object->IsBoolean());
+  return PROTOTYPE_MAP;
+}
+
+
+InlineCacheHolderFlag IC::GetCodeCacheForObject(JSObject* object,
+                                                JSObject* holder) {
+  // Fast-properties and global objects store stubs in their own maps.
+  // Slow properties objects use prototype's map (unless the property is its own
+  // when holder == object). It works because slow properties objects having
+  // the same prototype (or a prototype with the same map) and not having
+  // the property are interchangeable for such a stub.
+  if (holder != object &&
+      !object->HasFastProperties() &&
+      !object->IsJSGlobalProxy() &&
+      !object->IsJSGlobalObject()) {
+    return PROTOTYPE_MAP;
+  }
+  return OWN_MAP;
+}
+
+
+JSObject* IC::GetCodeCacheHolder(Object* object, InlineCacheHolderFlag holder) {
+  Object* map_owner = (holder == OWN_MAP ? object : object->GetPrototype());
+  ASSERT(map_owner->IsJSObject());
+  return JSObject::cast(map_owner);
+}
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_IC_INL_H_