ArchVariant.cpp revision c1a4ab9c313d8a3d12007f2dbef7b5a6fa4ac2ef
1/* 2 * Copyright (C) 2009 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 17extern "C" void dvmCompilerTemplateStart(void); 18 19/* 20 * This file is included by Codegen-armv5te-vfp.c, and implements architecture 21 * variant-specific code. 22 */ 23 24/* 25 * Determine the initial instruction set to be used for this trace. 26 * Later components may decide to change this. 27 */ 28JitInstructionSetType dvmCompilerInstructionSet(void) 29{ 30 return DALVIK_JIT_THUMB; 31} 32 33/* First, declare dvmCompiler_TEMPLATE_XXX for each template */ 34#define JIT_TEMPLATE(X) extern "C" void dvmCompiler_TEMPLATE_##X(); 35#include "../../../template/armv5te-vfp/TemplateOpList.h" 36#undef JIT_TEMPLATE 37 38/* Architecture-specific initializations and checks go here */ 39bool dvmCompilerArchVariantInit(void) 40{ 41 int i = 0; 42 43 /* 44 * Then, populate the templateEntryOffsets array with the offsets from the 45 * the dvmCompilerTemplateStart symbol for each template. 46 */ 47#define JIT_TEMPLATE(X) templateEntryOffsets[i++] = \ 48 (intptr_t) dvmCompiler_TEMPLATE_##X - (intptr_t) dvmCompilerTemplateStart; 49#include "../../../template/armv5te-vfp/TemplateOpList.h" 50#undef JIT_TEMPLATE 51 52 /* Target-specific configuration */ 53 gDvmJit.jitTableSize = 1 << 9; // 512 54 gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1; 55 gDvmJit.threshold = 200; 56 gDvmJit.codeCacheSize = 512*1024; 57 58#if defined(WITH_SELF_VERIFICATION) 59 /* Force into blocking mode */ 60 gDvmJit.blockingMode = true; 61 gDvm.nativeDebuggerActive = true; 62#endif 63 64 /* Codegen-specific assumptions */ 65 assert(OFFSETOF_MEMBER(ClassObject, vtable) < 128 && 66 (OFFSETOF_MEMBER(ClassObject, vtable) & 0x3) == 0); 67 assert(OFFSETOF_MEMBER(ArrayObject, length) < 128 && 68 (OFFSETOF_MEMBER(ArrayObject, length) & 0x3) == 0); 69 assert(OFFSETOF_MEMBER(ArrayObject, contents) < 256); 70 71 /* Up to 5 args are pushed on top of FP - sizeofStackSaveArea */ 72 assert(sizeof(StackSaveArea) < 236); 73 74 /* 75 * EA is calculated by doing "Rn + imm5 << 2". Make sure that the last 76 * offset from the struct is less than 128. 77 */ 78 if ((offsetof(Thread, jitToInterpEntries) + 79 sizeof(struct JitToInterpEntries)) >= 128) { 80 ALOGE("Thread.jitToInterpEntries size overflow"); 81 dvmAbort(); 82 } 83 84 /* No method JIT for Thumb backend */ 85 gDvmJit.disableOpt |= (1 << kMethodJit); 86 87 // Make sure all threads have current values 88 dvmJitUpdateThreadStateAll(); 89 90 return true; 91} 92 93int dvmCompilerTargetOptHint(int key) 94{ 95 int res; 96 switch (key) { 97 case kMaxHoistDistance: 98 res = 2; 99 break; 100 default: 101 ALOGE("Unknown target optimization hint key: %d",key); 102 res = 0; 103 } 104 return res; 105} 106 107void dvmCompilerGenMemBarrier(CompilationUnit *cUnit, int barrierKind) 108{ 109#if ANDROID_SMP != 0 110#error armv5+smp not supported 111#endif 112} 113