1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 /*! \file LowerMove.cpp 19 \brief This file lowers the following bytecodes: MOVE_XXX 20 */ 21 #include "libdex/DexOpcodes.h" 22 #include "libdex/DexFile.h" 23 #include "Lower.h" 24 #include "enc_wrapper.h" 25 26 #define P_GPR_1 PhysicalReg_EBX 27 //! lower bytecode MOVE 28 29 //! 30 int op_move() { 31 u2 vA, vB; 32 vA = INST_A(inst); 33 vB = INST_B(inst); 34 get_virtual_reg(vB, OpndSize_32, 1, false/*isPhysical*/); 35 set_virtual_reg(vA, OpndSize_32, 1, false); 36 rPC += 1; 37 return 2; 38 } 39 //! lower bytecode MOVE_FROM16 40 41 //! 42 int op_move_from16() { 43 u2 vA, vB; 44 vA = INST_AA(inst); 45 vB = FETCH(1); 46 get_virtual_reg(vB, OpndSize_32, 1, false); 47 set_virtual_reg(vA, OpndSize_32, 1, false); 48 rPC += 2; 49 return 2; 50 } 51 //! lower bytecode MOVE_16 52 53 //! 54 int op_move_16() { 55 u2 vA, vB; 56 vA = FETCH(1); 57 vB = FETCH(2); 58 get_virtual_reg(vB, OpndSize_32, 1, false); 59 set_virtual_reg(vA, OpndSize_32, 1, false); 60 rPC += 3; 61 return 2; 62 } 63 #undef P_GPR_1 64 //! lower bytecode MOVE_WIDE 65 66 //! 67 int op_move_wide() { 68 u2 vA = INST_A(inst); 69 u2 vB = INST_B(inst); 70 get_virtual_reg(vB, OpndSize_64, 1, false); 71 set_virtual_reg(vA, OpndSize_64, 1, false); 72 rPC += 1; 73 return 2; 74 } 75 //! lower bytecode MOVE_WIDE_FROM16 76 77 //! 78 int op_move_wide_from16() { 79 u2 vA = INST_AA(inst); 80 u2 vB = FETCH(1); 81 get_virtual_reg(vB, OpndSize_64, 1, false); 82 set_virtual_reg(vA, OpndSize_64, 1, false); 83 rPC += 2; 84 return 2; 85 } 86 //! lower bytecode MOVE_WIDE_16 87 88 //! 89 int op_move_wide_16() { 90 u2 vA = FETCH(1); 91 u2 vB = FETCH(2); 92 get_virtual_reg(vB, OpndSize_64, 1, false); 93 set_virtual_reg(vA, OpndSize_64, 1, false); 94 rPC += 3; 95 return 2; 96 } 97 //! lower bytecode MOVE_RESULT. 98 99 //! the return value from bytecode INVOKE is stored in the glue structure 100 int op_move_result() { 101 #ifdef WITH_JIT_INLINING 102 /* An inlined move result is effectively no-op */ 103 if (traceCurrentMIR->OptimizationFlags & MIR_INLINED) 104 return 0; 105 #endif 106 u2 vA = INST_AA(inst); 107 scratchRegs[0] = PhysicalReg_SCRATCH_1; 108 get_return_value(OpndSize_32, 1, false); 109 set_virtual_reg(vA, OpndSize_32, 1, false); 110 rPC += 1; 111 return 0; 112 } 113 //! lower bytecode MOVE_RESULT_WIDE. 114 115 //! the return value from bytecode INVOKE is stored in the glue structure 116 int op_move_result_wide() { 117 #ifdef WITH_JIT_INLINING 118 /* An inlined move result is effectively no-op */ 119 if (traceCurrentMIR->OptimizationFlags & MIR_INLINED) 120 return 0; 121 #endif 122 u2 vA = INST_AA(inst); 123 scratchRegs[0] = PhysicalReg_SCRATCH_1; 124 get_return_value(OpndSize_64, 1, false); 125 set_virtual_reg(vA, OpndSize_64, 1, false); 126 rPC += 1; 127 return 0; 128 } 129 130 #define P_GPR_1 PhysicalReg_EBX 131 #define P_GPR_2 PhysicalReg_ECX 132 //!lower bytecode MOVE_RESULT_EXCEPTION 133 134 //!update a virtual register with exception from glue structure; 135 //!clear the exception from glue structure 136 int op_move_exception() { 137 u2 vA = INST_AA(inst); 138 scratchRegs[2] = PhysicalReg_Null; scratchRegs[3] = PhysicalReg_Null; 139 scratchRegs[0] = PhysicalReg_SCRATCH_1; scratchRegs[1] = PhysicalReg_Null; 140 get_self_pointer(2, false); 141 move_mem_to_reg(OpndSize_32, offThread_exception, 2, false, 3, false); 142 move_imm_to_mem(OpndSize_32, 0, offThread_exception, 2, false); 143 set_virtual_reg(vA, OpndSize_32, 3, false); 144 rPC += 1; 145 return 0; 146 } 147 #undef P_GPR_1 148 #undef P_GPR_2 149 150
