JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / bytecode / JumpTable.h

diff --git a/bytecode/JumpTable.h b/bytecode/JumpTable.h
index 44e224d566cf36f0cda9b157dfc9093ab14db2a9..b83e842cb3aaf34ea84ed210aae69ed11887f631 100644 (file)
--- a/bytecode/JumpTable.h
+++ b/bytecode/JumpTable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -11,7 +11,7 @@
  * 2.  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.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
  *     its contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
@@ -30,45 +30,51 @@
 #ifndef JumpTable_h
 #define JumpTable_h
 
-#include "UString.h"
+#include "MacroAssembler.h"
 #include <wtf/HashMap.h>
 #include <wtf/Vector.h>
+#include <wtf/text/StringImpl.h>
 
 namespace JSC {
 
     struct OffsetLocation {
         int32_t branchOffset;
 #if ENABLE(JIT)
-        void* ctiOffset;
+        CodeLocationLabel ctiOffset;
 #endif
     };
 
     struct StringJumpTable {
-        typedef HashMap<RefPtr<UString::Rep>, OffsetLocation> StringOffsetTable;
+        typedef HashMap<RefPtr<StringImpl>, OffsetLocation> StringOffsetTable;
         StringOffsetTable offsetTable;
 #if ENABLE(JIT)
-        void* ctiDefault; // FIXME: it should not be necessary to store this.
+        CodeLocationLabel ctiDefault; // FIXME: it should not be necessary to store this.
 #endif
 
-        inline int32_t offsetForValue(UString::Rep* value, int32_t defaultOffset)
+        inline int32_t offsetForValue(StringImpl* value, int32_t defaultOffset)
         {
             StringOffsetTable::const_iterator end = offsetTable.end();
             StringOffsetTable::const_iterator loc = offsetTable.find(value);
             if (loc == end)
                 return defaultOffset;
-            return loc->second.branchOffset;
+            return loc->value.branchOffset;
         }
 
 #if ENABLE(JIT)
-        inline void* ctiForValue(UString::Rep* value)
+        inline CodeLocationLabel ctiForValue(StringImpl* value)
         {
             StringOffsetTable::const_iterator end = offsetTable.end();
             StringOffsetTable::const_iterator loc = offsetTable.find(value);
             if (loc == end)
                 return ctiDefault;
-            return loc->second.ctiOffset;
+            return loc->value.ctiOffset;
         }
 #endif
+        
+        void clear()
+        {
+            offsetTable.clear();
+        }
     };
 
     struct SimpleJumpTable {
@@ -76,8 +82,8 @@ namespace JSC {
         Vector<int32_t> branchOffsets;
         int32_t min;
 #if ENABLE(JIT)
-        Vector<void*> ctiOffsets;
-        void* ctiDefault;
+        Vector<CodeLocationLabel> ctiOffsets;
+        CodeLocationLabel ctiDefault;
 #endif
 
         int32_t offsetForValue(int32_t value, int32_t defaultOffset);
@@ -88,13 +94,27 @@ namespace JSC {
         }
 
 #if ENABLE(JIT)
-        inline void* ctiForValue(int32_t value)
+        void ensureCTITable()
+        {
+            ASSERT(ctiOffsets.isEmpty() || ctiOffsets.size() == branchOffsets.size());
+            ctiOffsets.grow(branchOffsets.size());
+        }
+        
+        inline CodeLocationLabel ctiForValue(int32_t value)
         {
             if (value >= min && static_cast<uint32_t>(value - min) < ctiOffsets.size())
                 return ctiOffsets[value - min];
             return ctiDefault;
         }
 #endif
+        
+        void clear()
+        {
+            branchOffsets.clear();
+#if ENABLE(JIT)
+            ctiOffsets.clear();
+#endif
+        }
     };
 
 } // namespace JSC