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| 1 // Copyright 2009 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 #include "v8.h" | |
| 29 | |
| 30 #include "codegen-inl.h" | |
| 31 #include "register-allocator-inl.h" | |
| 32 | |
| 33 namespace v8 { namespace internal { | |
| 34 | |
| 35 // ------------------------------------------------------------------------- | |
| 36 // Result implementation. | |
| 37 | |
| 38 void Result::ToRegister() { | |
| 39 UNIMPLEMENTED(); | |
| 40 } | |
| 41 | |
| 42 | |
| 43 void Result::ToRegister(Register target) { | |
| 44 UNIMPLEMENTED(); | |
| 45 } | |
| 46 | |
| 47 | |
| 48 // ------------------------------------------------------------------------- | |
| 49 // RegisterAllocator implementation. | |
| 50 | |
| 51 RegisterFile RegisterAllocator::Reserved() { | |
| 52 RegisterFile reserved; | |
| 53 reserved.Use(sp); | |
| 54 reserved.Use(fp); | |
| 55 reserved.Use(cp); | |
| 56 reserved.Use(pc); | |
| 57 return reserved; | |
| 58 } | |
| 59 | |
| 60 | |
| 61 void RegisterAllocator::UnuseReserved(RegisterFile* register_file) { | |
| 62 register_file->ref_counts_[sp.code()] = 0; | |
| 63 register_file->ref_counts_[fp.code()] = 0; | |
| 64 register_file->ref_counts_[cp.code()] = 0; | |
| 65 register_file->ref_counts_[pc.code()] = 0; | |
| 66 } | |
| 67 | |
| 68 | |
| 69 void RegisterAllocator::Initialize() { | |
| 70 Reset(); | |
| 71 // The following registers are live on function entry, saved in the | |
| 72 // frame, and available for allocation during execution. | |
| 73 Use(r1); // JS function. | |
| 74 Use(lr); // Return address. | |
| 75 } | |
| 76 | |
| 77 | |
| 78 void RegisterAllocator::Reset() { | |
| 79 registers_.Reset(); | |
| 80 // The following registers are live on function entry and reserved | |
| 81 // during execution. | |
| 82 Use(sp); // Stack pointer. | |
| 83 Use(fp); // Frame pointer (caller's frame pointer on entry). | |
| 84 Use(cp); // Context context (callee's context on entry). | |
| 85 Use(pc); // Program counter. | |
| 86 } | |
| 87 | |
| 88 | |
| 89 Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() { | |
| 90 UNIMPLEMENTED(); | |
| 91 Result invalid(cgen_); | |
| 92 return invalid; | |
| 93 } | |
| 94 | |
| 95 | |
| 96 } } // namespace v8::internal | |
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Chromium Code Reviews
Issue 92068:
Move backend specific files to separate directories. (Closed)
