ArchVariant.cpp revision a8b91c52fd8a90b784835dfe1f8898035266c4dd
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-mips.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_MIPS; 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/mips/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/mips/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 assert((offsetof(Thread, jitToInterpEntries) + 79 sizeof(struct JitToInterpEntries)) < 128); 80 81 /* FIXME - comment out the following to enable method-based JIT */ 82 gDvmJit.disableOpt |= (1 << kMethodJit); 83 84 // Make sure all threads have current values 85 dvmJitUpdateThreadStateAll(); 86 87 return true; 88} 89 90int dvmCompilerTargetOptHint(int key) 91{ 92 int res; 93 switch (key) { 94 case kMaxHoistDistance: 95 res = 2; 96 break; 97 default: 98 LOGE("Unknown target optimization hint key: %d",key); 99 res = 0; 100 } 101 return res; 102} 103 104void dvmCompilerGenMemBarrier(CompilationUnit *cUnit, int barrierKind) 105{ 106 __asm__ __volatile__ ("" : : : "memory"); 107} 108