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 esp, 4 36 37 /* Spill callee save regs */ 38 PUSH %ebp 39 PUSH %edi 40 PUSH %esi 41 PUSH %ebx 42 43 /* Allocate frame */ 44 subl $$FRAME_SIZE, %esp 45 .cfi_adjust_cfa_offset FRAME_SIZE 46 47 /* Load ShadowFrame pointer */ 48 movl IN_ARG2(%esp), %edx 49 50 /* Remember the return register */ 51 movl IN_ARG3(%esp), %eax 52 movl %eax, SHADOWFRAME_RESULT_REGISTER_OFFSET(%edx) 53 54 /* Remember the code_item */ 55 movl IN_ARG1(%esp), %ecx 56 movl %ecx, SHADOWFRAME_CODE_ITEM_OFFSET(%edx) 57 58 /* set up "named" registers */ 59 movl SHADOWFRAME_NUMBER_OF_VREGS_OFFSET(%edx), %eax 60 leal SHADOWFRAME_VREGS_OFFSET(%edx), rFP 61 leal (rFP, %eax, 4), rREFS 62 movl SHADOWFRAME_DEX_PC_OFFSET(%edx), %eax 63 lea CODEITEM_INSNS_OFFSET(%ecx), rPC 64 lea (rPC, %eax, 2), rPC 65 EXPORT_PC 66 67 /* Set up for backwards branches & osr profiling */ 68 movl OFF_FP_METHOD(rFP), %eax 69 movl %eax, OUT_ARG0(%esp) 70 leal OFF_FP_SHADOWFRAME(rFP), %ecx 71 movl %ecx, OUT_ARG1(%esp) 72 call SYMBOL(MterpSetUpHotnessCountdown) 73 74 /* Starting ibase */ 75 REFRESH_IBASE 76 77 /* start executing the instruction at rPC */ 78 FETCH_INST 79 GOTO_NEXT 80 /* NOTE: no fallthrough */ 81
