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Issue 92068: Move backend specific files to separate directories. (Closed)
Patch Set: Added CPPPATH flag and made all includes use same base path. Created 11 years, 8 months ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
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
28 // CPU specific code for ia32 independent of OS goes here.
29
30 #include "v8.h"
31
32 #include "cpu.h"
33 #include "macro-assembler.h"
34
35 namespace v8 { namespace internal {
36
37 void CPU::Setup() {
38 CpuFeatures::Probe();
39 }
40
41
42 void CPU::FlushICache(void* start, size_t size) {
43 // No need to flush the instruction cache on Intel. On Intel instruction
44 // cache flushing is only necessary when multiple cores running the same
45 // code simultaneously. V8 (and JavaScript) is single threaded and when code
46 // is patched on an intel CPU the core performing the patching will have its
47 // own instruction cache updated automatically.
48
49 // If flushing of the instruction cache becomes necessary Windows have the
50 // API function FlushInstructionCache.
51 }
52
53
54 void CPU::DebugBreak() {
55 #ifdef _MSC_VER
56 // To avoid Visual Studio runtime support the following code can be used
57 // instead
58 // __asm { int 3 }
59 __debugbreak();
60 #else
61 asm("int $3");
62 #endif
63 }
64
65 } } // namespace v8::internal
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