1 // Copyright 2010 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 #ifndef V8_IA32_REGISTER_ALLOCATOR_MIPS_INL_H_ 29 #define V8_IA32_REGISTER_ALLOCATOR_MIPS_INL_H_ 30 31 #include "v8.h" 32 #include "mips/assembler-mips.h" 33 34 namespace v8 { 35 namespace internal { 36 37 // ------------------------------------------------------------------------- 38 // RegisterAllocator implementation. 39 40 bool RegisterAllocator::IsReserved(Register reg) { 41 // The code for this test relies on the order of register codes. 42 return reg.is(cp) || reg.is(s8_fp) || reg.is(sp); 43 } 44 45 46 int RegisterAllocator::ToNumber(Register reg) { 47 ASSERT(reg.is_valid() && !IsReserved(reg)); 48 const int kNumbers[] = { 49 0, // zero_reg 50 1, // at 51 2, // v0 52 3, // v1 53 4, // a0 54 5, // a1 55 6, // a2 56 7, // a3 57 8, // t0 58 9, // t1 59 10, // t2 60 11, // t3 61 12, // t4 62 13, // t5 63 14, // t 64 15, // t7 65 16, // t8 66 17, // t9 67 18, // s0 68 19, // s1 69 20, // s2 70 21, // s3 71 22, // s4 72 23, // s5 73 24, // s6 74 25, // s7 75 26, // k0 76 27, // k1 77 28, // gp 78 29, // sp 79 30, // s8_fp 80 31, // ra 81 }; 82 return kNumbers[reg.code()]; 83 } 84 85 86 Register RegisterAllocator::ToRegister(int num) { 87 ASSERT(num >= 0 && num < kNumRegisters); 88 const Register kRegisters[] = { 89 zero_reg, 90 at, 91 v0, 92 v1, 93 a0, 94 a1, 95 a2, 96 a3, 97 t0, 98 t1, 99 t2, 100 t3, 101 t4, 102 t5, 103 t6, 104 t7, 105 s0, 106 s1, 107 s2, 108 s3, 109 s4, 110 s5, 111 s6, 112 s7, 113 t8, 114 t9, 115 k0, 116 k1, 117 gp, 118 sp, 119 s8_fp, 120 ra 121 }; 122 return kRegisters[num]; 123 } 124 125 126 void RegisterAllocator::Initialize() { 127 Reset(); 128 } 129 130 131 } } // namespace v8::internal 132 133 #endif // V8_IA32_REGISTER_ALLOCATOR_MIPS_INL_H_ 134 135
