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-// Copyright 2012 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 "compiler.h"
-#include "debug.h"
-#include "macro-assembler.h"
-
-namespace v8 {
-namespace internal {
-
-
-Address IC::address() const {
- // Get the address of the call.
- Address result = Assembler::target_address_from_return_address(pc());
-
-#ifdef ENABLE_DEBUGGER_SUPPORT
- ASSERT(Isolate::Current() == isolate());
- Debug* debug = isolate()->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());
- Heap* heap = target->GetHeap();
- Code* old_target = GetTargetAtAddress(address);
-#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.
- if (old_target->kind() == Code::STORE_IC ||
- old_target->kind() == Code::KEYED_STORE_IC) {
- ASSERT(Code::GetStrictMode(old_target->extra_ic_state()) ==
- Code::GetStrictMode(target->extra_ic_state()));
- }
-#endif
- Assembler::set_target_address_at(address, target->instruction_start());
- if (heap->gc_state() == Heap::MARK_COMPACT) {
- heap->mark_compact_collector()->RecordCodeTargetPatch(address, target);
- } else {
- heap->incremental_marking()->RecordCodeTargetPatch(address, target);
- }
- PostPatching(address, target, old_target);
-}
-
-
-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->IsSymbol() ||
- object->IsNumber() || object->IsBoolean());
- return DELEGATE_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 DELEGATE_MAP;
- }
- return OWN_MAP;
-}
-
-
-JSObject* IC::GetCodeCacheHolder(Isolate* isolate,
- Object* object,
- InlineCacheHolderFlag holder) {
- Object* map_owner = holder == OWN_MAP ? object : object->GetDelegate(isolate);
- ASSERT(map_owner->IsJSObject());
- return JSObject::cast(map_owner);
-}
-
-
-} } // namespace v8::internal
-
-#endif // V8_IC_INL_H_