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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // modification, are permitted provided that the following conditions are | 3 // found in the LICENSE file. |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | 4 |
28 #include "v8.h" | 5 #include "v8.h" |
29 #include "arguments.h" | 6 #include "arguments.h" |
30 | 7 |
31 #include "vm-state-inl.h" | 8 #include "vm-state-inl.h" |
32 | 9 |
33 namespace v8 { | 10 namespace v8 { |
34 namespace internal { | 11 namespace internal { |
35 | 12 |
36 | 13 |
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119 | 96 |
120 double ClobberDoubleRegisters(double x1, double x2, double x3, double x4) { | 97 double ClobberDoubleRegisters(double x1, double x2, double x3, double x4) { |
121 // TODO(ulan): This clobbers only subset of registers depending on compiler, | 98 // TODO(ulan): This clobbers only subset of registers depending on compiler, |
122 // Rewrite this in assembly to really clobber all registers. | 99 // Rewrite this in assembly to really clobber all registers. |
123 // GCC for ia32 uses the FPU and does not touch XMM registers. | 100 // GCC for ia32 uses the FPU and does not touch XMM registers. |
124 return x1 * 1.01 + x2 * 2.02 + x3 * 3.03 + x4 * 4.04; | 101 return x1 * 1.01 + x2 * 2.02 + x3 * 3.03 + x4 * 4.04; |
125 } | 102 } |
126 | 103 |
127 | 104 |
128 } } // namespace v8::internal | 105 } } // namespace v8::internal |
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