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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 #ifndef RUNTIME_VM_CPU_MIPS_H_ | |
6 #define RUNTIME_VM_CPU_MIPS_H_ | |
7 | |
8 #include "vm/allocation.h" | |
9 | |
10 namespace dart { | |
11 | |
12 // TargetCPUFeatures gives CPU features for the architecture that we are | |
13 // generating code for. HostCPUFeatures gives the CPU features for the | |
14 // architecture that we are actually running on. When the architectures | |
15 // are the same, TargetCPUFeatures will query HostCPUFeatures. When they are | |
16 // different (i.e. we are running in a simulator), HostCPUFeatures will | |
17 // additionally mock the options needed for the target architecture so that | |
18 // they may be altered for testing. | |
19 | |
20 enum MIPSVersion { | |
21 MIPS32, | |
22 MIPS32r2, | |
23 MIPSvUnknown, | |
24 }; | |
25 | |
26 class HostCPUFeatures : public AllStatic { | |
27 public: | |
28 static void InitOnce(); | |
29 static void Cleanup(); | |
30 static const char* hardware() { | |
31 DEBUG_ASSERT(initialized_); | |
32 return hardware_; | |
33 } | |
34 static MIPSVersion mips_version() { | |
35 DEBUG_ASSERT(initialized_); | |
36 return mips_version_; | |
37 } | |
38 | |
39 private: | |
40 static const char* hardware_; | |
41 static MIPSVersion mips_version_; | |
42 #if defined(DEBUG) | |
43 static bool initialized_; | |
44 #endif | |
45 }; | |
46 | |
47 class TargetCPUFeatures : public AllStatic { | |
48 public: | |
49 static void InitOnce() { HostCPUFeatures::InitOnce(); } | |
50 static void Cleanup() { HostCPUFeatures::Cleanup(); } | |
51 static const char* hardware() { return HostCPUFeatures::hardware(); } | |
52 static bool double_truncate_round_supported() { return false; } | |
53 static MIPSVersion mips_version() { return HostCPUFeatures::mips_version(); } | |
54 }; | |
55 | |
56 } // namespace dart | |
57 | |
58 #endif // RUNTIME_VM_CPU_MIPS_H_ | |
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