1 /* 2 * Copyright (C) 2016 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 * Interpreter entry point. 18 */ 19 20 .text 21 .global SYMBOL(ExecuteMterpImpl) 22 FUNCTION_TYPE(ExecuteMterpImpl) 23 24 /* 25 * On entry: 26 * 0 Thread* self 27 * 1 code_item 28 * 2 ShadowFrame 29 * 3 JValue* result_register 30 * 31 */ 32 33 SYMBOL(ExecuteMterpImpl): 34 .cfi_startproc 35 .cfi_def_cfa rsp, 8 36 37 /* Spill callee save regs */ 38 PUSH %rbx 39 PUSH %rbp 40 PUSH %r12 41 PUSH %r13 42 PUSH %r14 43 PUSH %r15 44 45 /* Allocate frame */ 46 subq $$FRAME_SIZE, %rsp 47 .cfi_adjust_cfa_offset FRAME_SIZE 48 49 /* Remember the return register */ 50 movq IN_ARG3, SHADOWFRAME_RESULT_REGISTER_OFFSET(IN_ARG2) 51 52 /* Remember the code_item */ 53 movq IN_ARG1, SHADOWFRAME_CODE_ITEM_OFFSET(IN_ARG2) 54 55 /* set up "named" registers */ 56 movl SHADOWFRAME_NUMBER_OF_VREGS_OFFSET(IN_ARG2), %eax 57 leaq SHADOWFRAME_VREGS_OFFSET(IN_ARG2), rFP 58 leaq (rFP, %rax, 4), rREFS 59 movl SHADOWFRAME_DEX_PC_OFFSET(IN_ARG2), %eax 60 leaq CODEITEM_INSNS_OFFSET(IN_ARG1), rPC 61 leaq (rPC, %rax, 2), rPC 62 EXPORT_PC 63 64 /* Starting ibase */ 65 movq IN_ARG0, rSELF 66 REFRESH_IBASE 67 68 /* Set up for backwards branches & osr profiling */ 69 movq OFF_FP_METHOD(rFP), OUT_ARG0 70 leaq OFF_FP_SHADOWFRAME(rFP), OUT_ARG1 71 call SYMBOL(MterpSetUpHotnessCountdown) 72 movswl %ax, rPROFILE 73 74 /* start executing the instruction at rPC */ 75 FETCH_INST 76 GOTO_NEXT 77 /* NOTE: no fallthrough */ 78
