1/*
2 * Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ValueRecovery.h"
28
29#include "CodeBlock.h"
30#include "JSCInlines.h"
31
32namespace JSC {
33
34JSValue ValueRecovery::recover(ExecState* exec) const
35{
36    switch (technique()) {
37    case DisplacedInJSStack:
38        return exec->r(virtualRegister().offset()).jsValue();
39    case Int32DisplacedInJSStack:
40        return jsNumber(exec->r(virtualRegister().offset()).unboxedInt32());
41    case Int52DisplacedInJSStack:
42        return jsNumber(exec->r(virtualRegister().offset()).unboxedInt52());
43    case StrictInt52DisplacedInJSStack:
44        return jsNumber(exec->r(virtualRegister().offset()).unboxedStrictInt52());
45    case DoubleDisplacedInJSStack:
46        return jsNumber(exec->r(virtualRegister().offset()).unboxedDouble());
47    case CellDisplacedInJSStack:
48        return exec->r(virtualRegister().offset()).unboxedCell();
49    case BooleanDisplacedInJSStack:
50#if USE(JSVALUE64)
51        return exec->r(virtualRegister().offset()).jsValue();
52#else
53        return jsBoolean(exec->r(virtualRegister().offset()).unboxedBoolean());
54#endif
55    case Constant:
56        return constant();
57    default:
58        RELEASE_ASSERT_NOT_REACHED();
59        return JSValue();
60    }
61}
62
63#if ENABLE(JIT)
64
65void ValueRecovery::dumpInContext(PrintStream& out, DumpContext* context) const
66{
67    switch (technique()) {
68    case InGPR:
69        out.print(gpr());
70        return;
71    case UnboxedInt32InGPR:
72        out.print("int32(", gpr(), ")");
73        return;
74    case UnboxedInt52InGPR:
75        out.print("int52(", gpr(), ")");
76        return;
77    case UnboxedStrictInt52InGPR:
78        out.print("strictInt52(", gpr(), ")");
79        return;
80    case UnboxedBooleanInGPR:
81        out.print("bool(", gpr(), ")");
82        return;
83    case UnboxedCellInGPR:
84        out.print("cell(", gpr(), ")");
85        return;
86    case InFPR:
87        out.print(fpr());
88        return;
89#if USE(JSVALUE32_64)
90    case InPair:
91        out.print("pair(", tagGPR(), ", ", payloadGPR(), ")");
92        return;
93#endif
94    case DisplacedInJSStack:
95        out.printf("*%d", virtualRegister().offset());
96        return;
97    case Int32DisplacedInJSStack:
98        out.printf("*int32(%d)", virtualRegister().offset());
99        return;
100    case Int52DisplacedInJSStack:
101        out.printf("*int52(%d)", virtualRegister().offset());
102        return;
103    case StrictInt52DisplacedInJSStack:
104        out.printf("*strictInt52(%d)", virtualRegister().offset());
105        return;
106    case DoubleDisplacedInJSStack:
107        out.printf("*double(%d)", virtualRegister().offset());
108        return;
109    case CellDisplacedInJSStack:
110        out.printf("*cell(%d)", virtualRegister().offset());
111        return;
112    case BooleanDisplacedInJSStack:
113        out.printf("*bool(%d)", virtualRegister().offset());
114        return;
115    case ArgumentsThatWereNotCreated:
116        out.printf("arguments");
117        return;
118    case Constant:
119        out.print("[", inContext(constant(), context), "]");
120        return;
121    case DontKnow:
122        out.printf("!");
123        return;
124    }
125    RELEASE_ASSERT_NOT_REACHED();
126}
127
128void ValueRecovery::dump(PrintStream& out) const
129{
130    dumpInContext(out, 0);
131}
132#endif // ENABLE(JIT)
133
134} // namespace JSC
135
136