JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / bytecode / ValueRecovery.cpp

diff --git a/bytecode/ValueRecovery.cpp b/bytecode/ValueRecovery.cpp
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+++ b/bytecode/ValueRecovery.cpp
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+/*
+ * Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. 
+ */
+
+#include "config.h"
+#include "ValueRecovery.h"
+
+#include "CodeBlock.h"
+#include "JSCInlines.h"
+
+namespace JSC {
+
+JSValue ValueRecovery::recover(ExecState* exec) const
+{
+    switch (technique()) {
+    case DisplacedInJSStack:
+        return exec->r(virtualRegister().offset()).jsValue();
+    case Int32DisplacedInJSStack:
+        return jsNumber(exec->r(virtualRegister().offset()).unboxedInt32());
+    case Int52DisplacedInJSStack:
+        return jsNumber(exec->r(virtualRegister().offset()).unboxedInt52());
+    case StrictInt52DisplacedInJSStack:
+        return jsNumber(exec->r(virtualRegister().offset()).unboxedStrictInt52());
+    case DoubleDisplacedInJSStack:
+        return jsNumber(exec->r(virtualRegister().offset()).unboxedDouble());
+    case CellDisplacedInJSStack:
+        return exec->r(virtualRegister().offset()).unboxedCell();
+    case BooleanDisplacedInJSStack:
+#if USE(JSVALUE64)
+        return exec->r(virtualRegister().offset()).jsValue();
+#else
+        return jsBoolean(exec->r(virtualRegister().offset()).unboxedBoolean());
+#endif
+    case Constant:
+        return constant();
+    default:
+        RELEASE_ASSERT_NOT_REACHED();
+        return JSValue();
+    }
+}
+
+#if ENABLE(JIT)
+
+void ValueRecovery::dumpInContext(PrintStream& out, DumpContext* context) const
+{
+    switch (technique()) {
+    case InGPR:
+        out.print(gpr());
+        return;
+    case UnboxedInt32InGPR:
+        out.print("int32(", gpr(), ")");
+        return;
+    case UnboxedInt52InGPR:
+        out.print("int52(", gpr(), ")");
+        return;
+    case UnboxedStrictInt52InGPR:
+        out.print("strictInt52(", gpr(), ")");
+        return;
+    case UnboxedBooleanInGPR:
+        out.print("bool(", gpr(), ")");
+        return;
+    case UnboxedCellInGPR:
+        out.print("cell(", gpr(), ")");
+        return;
+    case InFPR:
+        out.print(fpr());
+        return;
+#if USE(JSVALUE32_64)
+    case InPair:
+        out.print("pair(", tagGPR(), ", ", payloadGPR(), ")");
+        return;
+#endif
+    case DisplacedInJSStack:
+        out.printf("*%d", virtualRegister().offset());
+        return;
+    case Int32DisplacedInJSStack:
+        out.printf("*int32(%d)", virtualRegister().offset());
+        return;
+    case Int52DisplacedInJSStack:
+        out.printf("*int52(%d)", virtualRegister().offset());
+        return;
+    case StrictInt52DisplacedInJSStack:
+        out.printf("*strictInt52(%d)", virtualRegister().offset());
+        return;
+    case DoubleDisplacedInJSStack:
+        out.printf("*double(%d)", virtualRegister().offset());
+        return;
+    case CellDisplacedInJSStack:
+        out.printf("*cell(%d)", virtualRegister().offset());
+        return;
+    case BooleanDisplacedInJSStack:
+        out.printf("*bool(%d)", virtualRegister().offset());
+        return;
+    case ArgumentsThatWereNotCreated:
+        out.printf("arguments");
+        return;
+    case Constant:
+        out.print("[", inContext(constant(), context), "]");
+        return;
+    case DontKnow:
+        out.printf("!");
+        return;
+    }
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+void ValueRecovery::dump(PrintStream& out) const
+{
+    dumpInContext(out, 0);
+}
+#endif // ENABLE(JIT)
+
+} // namespace JSC
+