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 17 extern "C" void dvmCompilerTemplateStart(void); 18 19 /* 20 * Determine the initial instruction set to be used for this trace. 21 * Later components may decide to change this. 22 */ 23 JitInstructionSetType dvmCompilerInstructionSet(void) 24 { 25 return DALVIK_JIT_THUMB2; 26 } 27 28 /* First, declare dvmCompiler_TEMPLATE_XXX for each template */ 29 #define JIT_TEMPLATE(X) extern "C" void dvmCompiler_TEMPLATE_##X(); 30 #include "../../../template/armv5te-vfp/TemplateOpList.h" 31 #undef JIT_TEMPLATE 32 33 /* Architecture-specific initializations and checks go here */ 34 bool dvmCompilerArchVariantInit(void) 35 { 36 int i = 0; 37 38 /* 39 * Then, populate the templateEntryOffsets array with the offsets from the 40 * the dvmCompilerTemplateStart symbol for each template. 41 */ 42 #define JIT_TEMPLATE(X) templateEntryOffsets[i++] = \ 43 (intptr_t) dvmCompiler_TEMPLATE_##X - (intptr_t) dvmCompilerTemplateStart; 44 #include "../../../template/armv5te-vfp/TemplateOpList.h" 45 #undef JIT_TEMPLATE 46 47 /* Target-specific configuration */ 48 gDvmJit.jitTableSize = 1 << 12; // 4096 49 gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1; 50 if (gDvmJit.threshold == 0) { 51 gDvmJit.threshold = 40; 52 } 53 gDvmJit.codeCacheSize = 1024*1024; 54 55 #if defined(WITH_SELF_VERIFICATION) 56 /* Force into blocking */ 57 gDvmJit.blockingMode = true; 58 gDvm.nativeDebuggerActive = true; 59 #endif 60 61 /* Codegen-specific assumptions */ 62 assert(OFFSETOF_MEMBER(ClassObject, vtable) < 128 && 63 (OFFSETOF_MEMBER(ClassObject, vtable) & 0x3) == 0); 64 assert(OFFSETOF_MEMBER(ArrayObject, length) < 128 && 65 (OFFSETOF_MEMBER(ArrayObject, length) & 0x3) == 0); 66 assert(OFFSETOF_MEMBER(ArrayObject, contents) < 256); 67 68 /* Up to 5 args are pushed on top of FP - sizeofStackSaveArea */ 69 assert(sizeof(StackSaveArea) < 236); 70 71 /* 72 * EA is calculated by doing "Rn + imm5 << 2". Make sure that the last 73 * offset from the struct is less than 128. 74 */ 75 if ((offsetof(Thread, jitToInterpEntries) + 76 sizeof(struct JitToInterpEntries)) >= 128) { 77 ALOGE("Thread.jitToInterpEntries size overflow"); 78 dvmAbort(); 79 } 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 90 int dvmCompilerTargetOptHint(int key) 91 { 92 int res; 93 switch (key) { 94 case kMaxHoistDistance: 95 res = 7; 96 break; 97 default: 98 ALOGE("Unknown target optimization hint key: %d",key); 99 res = 0; 100 } 101 return res; 102 } 103 104 void dvmCompilerGenMemBarrier(CompilationUnit *cUnit, int barrierKind) 105 { 106 #if ANDROID_SMP != 0 107 ArmLIR *dmb = newLIR1(cUnit, kThumb2Dmb, barrierKind); 108 dmb->defMask = ENCODE_ALL; 109 #endif 110 } 111