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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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30 | 30 |
31 #include "v8.h" | 31 #include "v8.h" |
32 | 32 |
33 namespace v8 { | 33 namespace v8 { |
34 namespace internal { | 34 namespace internal { |
35 | 35 |
36 // ------------------------------------------------------------------------- | 36 // ------------------------------------------------------------------------- |
37 // RegisterAllocator implementation. | 37 // RegisterAllocator implementation. |
38 | 38 |
39 bool RegisterAllocator::IsReserved(Register reg) { | 39 bool RegisterAllocator::IsReserved(Register reg) { |
40 // All registers are reserved for now. | 40 return reg.is(rsp) || reg.is(rbp) || reg.is(rsi) || reg.is(r10); |
41 return true; | |
42 } | 41 } |
43 | 42 |
44 | 43 |
45 // The register allocator uses small integers to represent the | 44 // The register allocator uses small integers to represent the |
46 // non-reserved assembler registers. | 45 // non-reserved assembler registers. |
47 | 46 |
48 int RegisterAllocator::ToNumber(Register reg) { | 47 int RegisterAllocator::ToNumber(Register reg) { |
49 ASSERT(reg.is_valid() && !IsReserved(reg)); | 48 ASSERT(reg.is_valid() && !IsReserved(reg)); |
50 UNIMPLEMENTED(); | 49 return reg.code(); |
51 return -1; | |
52 } | 50 } |
53 | 51 |
54 | 52 |
55 Register RegisterAllocator::ToRegister(int num) { | 53 Register RegisterAllocator::ToRegister(int num) { |
56 ASSERT(num >= 0 && num < kNumRegisters); | 54 ASSERT(num >= 0 && num < kNumRegisters); |
57 UNIMPLEMENTED(); | 55 Register result = {num}; |
58 return no_reg; | 56 return result; |
59 } | 57 } |
60 | 58 |
61 | 59 |
62 void RegisterAllocator::Initialize() { | 60 void RegisterAllocator::Initialize() { |
63 UNIMPLEMENTED(); | 61 // TODO(X64): Implement. |
64 } | 62 } |
65 | 63 |
66 | 64 |
67 } } // namespace v8::internal | 65 } } // namespace v8::internal |
68 | 66 |
69 #endif // V8_X64_REGISTER_ALLOCATOR_X64_INL_H_ | 67 #endif // V8_X64_REGISTER_ALLOCATOR_X64_INL_H_ |
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