asm-constants.h revision d51370ff814e88b63baa3b1f5300b6560330c12d
1/* 2 * Copyright 2008 The Android Open Source Project 3 * 4 * Constants used by the assembler and verified by the C compiler. 5 */ 6 7#if defined(ASM_DEF_VERIFY) 8 /* 9 * Generate C fragments that verify values; assumes "bool failed" exists. 10 * These are all constant expressions, so on success these will compile 11 * down to nothing. 12 */ 13# define MTERP_OFFSET(_name, _type, _field, _offset) \ 14 if (offsetof(_type, _field) != _offset) { \ 15 LOGE("Bad asm offset %s (%d), should be %d\n", \ 16 #_name, _offset, offsetof(_type, _field)); \ 17 failed = true; \ 18 } 19# define MTERP_SIZEOF(_name, _type, _size) \ 20 if (sizeof(_type) != (_size)) { \ 21 LOGE("Bad asm sizeof %s (%d), should be %d\n", \ 22 #_name, (_size), sizeof(_type)); \ 23 failed = true; \ 24 } 25# define MTERP_CONSTANT(_name, _value) \ 26 if ((_name) != (_value)) { \ 27 LOGE("Bad asm constant %s (%d), should be %d\n", \ 28 #_name, (_value), (_name)); \ 29 failed = true; \ 30 } 31#else 32 /* generate constant labels for the assembly output */ 33# define MTERP_OFFSET(name, type, field, offset) name = offset 34# define MTERP_SIZEOF(name, type, size) name = size 35# define MTERP_CONSTANT(name, value) name = value 36#endif 37 38/* 39 * Platform dependencies. Some platforms require 64-bit alignment of 64-bit 40 * data structures. Some versions of gcc will hold small enumerated types 41 * in a char instead of an int. 42 */ 43#if defined(__ARM_EABI__) 44# define MTERP_NO_UNALIGN_64 45#endif 46#if defined(HAVE_SHORT_ENUMS) 47# define MTERP_SMALL_ENUM 1 48#else 49# define MTERP_SMALL_ENUM 4 50#endif 51 52/* 53 * This file must only contain the following kinds of statements: 54 * 55 * MTERP_OFFSET(name, StructType, fieldname, offset) 56 * 57 * Declares that the expected offset of StructType.fieldname is "offset". 58 * This will break whenever the contents of StructType are rearranged. 59 * 60 * MTERP_SIZEOF(name, Type, size) 61 * 62 * Declares that the expected size of Type is "size". 63 * 64 * MTERP_CONSTANT(name, value) 65 * 66 * Declares that the expected value of "name" is "value". Useful for 67 * enumerations and defined constants that are inaccessible to the 68 * assembly source. (Note this assumes you will use the same name in 69 * both C and assembly, which is good practice.) 70 * 71 * In all cases the "name" field is the label you will use in the assembler. 72 * 73 * The "value" field must always be an actual number, not a symbol, unless 74 * you are sure that the symbol's value will be visible to both C and 75 * assembly sources. There may be restrictions on the possible range of 76 * values (which are usually provided as immediate operands), so it's best 77 * to restrict numbers assuming a signed 8-bit field. 78 * 79 * On the assembly side, these just become "name=value" constants. On the 80 * C side, these turn into assertions that cause the VM to abort if the 81 * values are incorrect. 82 */ 83 84/* globals (sanity check for LDR vs LDRB) */ 85MTERP_SIZEOF(sizeofGlobal_debuggerActive, gDvm.debuggerActive, 1) 86#if defined(WITH_PROFILER) 87MTERP_SIZEOF(sizeofGlobal_activeProfilers, gDvm.activeProfilers, 4) 88#endif 89 90/* MterpGlue fields */ 91MTERP_OFFSET(offGlue_pc, MterpGlue, pc, 0) 92MTERP_OFFSET(offGlue_fp, MterpGlue, fp, 4) 93MTERP_OFFSET(offGlue_retval, MterpGlue, retval, 8) 94MTERP_OFFSET(offGlue_method, MterpGlue, method, 16) 95MTERP_OFFSET(offGlue_methodClassDex, MterpGlue, methodClassDex, 20) 96MTERP_OFFSET(offGlue_self, MterpGlue, self, 24) 97MTERP_OFFSET(offGlue_bailPtr, MterpGlue, bailPtr, 28) 98MTERP_OFFSET(offGlue_interpStackEnd, MterpGlue, interpStackEnd, 32) 99MTERP_OFFSET(offGlue_pSelfSuspendCount, MterpGlue, pSelfSuspendCount, 36) 100#if defined(WITH_DEBUGGER) && defined(WITH_PROFILER) 101MTERP_OFFSET(offGlue_pDebuggerActive, MterpGlue, pDebuggerActive, 40) 102MTERP_OFFSET(offGlue_pActiveProfilers, MterpGlue, pActiveProfilers, 44) 103MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 48) 104#if defined(WITH_JIT) 105MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 56) 106MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 60) 107MTERP_OFFSET(offGlue_jitResume, MterpGlue, jitResume, 64) 108MTERP_OFFSET(offGlue_jitResumePC, MterpGlue, jitResumePC, 68) 109#endif 110#elif defined(WITH_DEBUGGER) 111MTERP_OFFSET(offGlue_pDebuggerActive, MterpGlue, pDebuggerActive, 40) 112MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 44) 113#if defined(WITH_JIT) 114MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 52) 115MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 56) 116MTERP_OFFSET(offGlue_jitResume, MterpGlue, jitResume, 60) 117MTERP_OFFSET(offGlue_jitResumePC, MterpGlue, jitResumePC, 64) 118#endif 119#elif defined(WITH_PROFILER) 120MTERP_OFFSET(offGlue_pActiveProfilers, MterpGlue, pActiveProfilers, 40) 121MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 44) 122#if defined(WITH_JIT) 123MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 52) 124MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 56) 125MTERP_OFFSET(offGlue_jitResume, MterpGlue, jitResume, 60) 126MTERP_OFFSET(offGlue_jitResumePC, MterpGlue, jitResumePC, 64) 127#endif 128#else 129MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 40) 130#if defined(WITH_JIT) 131MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 48) 132MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 52) 133MTERP_OFFSET(offGlue_jitResume, MterpGlue, jitResume, 56) 134MTERP_OFFSET(offGlue_jitResumePC, MterpGlue, jitResumePC, 60) 135#endif 136#endif 137/* make sure all JValue union members are stored at the same offset */ 138MTERP_OFFSET(offGlue_retval_z, MterpGlue, retval.z, 8) 139MTERP_OFFSET(offGlue_retval_i, MterpGlue, retval.i, 8) 140MTERP_OFFSET(offGlue_retval_j, MterpGlue, retval.j, 8) 141MTERP_OFFSET(offGlue_retval_l, MterpGlue, retval.l, 8) 142 143/* DvmDex fields */ 144MTERP_OFFSET(offDvmDex_pResStrings, DvmDex, pResStrings, 8) 145MTERP_OFFSET(offDvmDex_pResClasses, DvmDex, pResClasses, 12) 146MTERP_OFFSET(offDvmDex_pResMethods, DvmDex, pResMethods, 16) 147MTERP_OFFSET(offDvmDex_pResFields, DvmDex, pResFields, 20) 148MTERP_OFFSET(offDvmDex_pInterfaceCache, DvmDex, pInterfaceCache, 24) 149 150/* StackSaveArea fields */ 151#ifdef EASY_GDB 152MTERP_OFFSET(offStackSaveArea_prevSave, StackSaveArea, prevSave, 0) 153MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 4) 154MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 8) 155MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 12) 156MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 16) 157MTERP_OFFSET(offStackSaveArea_localRefTop, StackSaveArea, xtra.localRefTop, 16) 158MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 20) 159MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 24) 160#else 161MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 0) 162MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 4) 163MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 8) 164MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 12) 165MTERP_OFFSET(offStackSaveArea_localRefTop, StackSaveArea, xtra.localRefTop, 12) 166MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 16) 167MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 20) 168#endif 169 170/* InstField fields */ 171#ifdef PROFILE_FIELD_ACCESS 172MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 24) 173#else 174MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 16) 175#endif 176 177/* StaticField fields */ 178#ifdef PROFILE_FIELD_ACCESS 179MTERP_OFFSET(offStaticField_value, StaticField, value, 24) 180#else 181MTERP_OFFSET(offStaticField_value, StaticField, value, 16) 182#endif 183 184/* Method fields */ 185MTERP_OFFSET(offMethod_clazz, Method, clazz, 0) 186MTERP_OFFSET(offMethod_accessFlags, Method, accessFlags, 4) 187MTERP_OFFSET(offMethod_methodIndex, Method, methodIndex, 8) 188MTERP_OFFSET(offMethod_registersSize, Method, registersSize, 10) 189MTERP_OFFSET(offMethod_outsSize, Method, outsSize, 12) 190MTERP_OFFSET(offMethod_name, Method, name, 16) 191MTERP_OFFSET(offMethod_insns, Method, insns, 32) 192MTERP_OFFSET(offMethod_nativeFunc, Method, nativeFunc, 40) 193 194/* InlineOperation fields -- code assumes "func" offset is zero, do not alter */ 195MTERP_OFFSET(offInlineOperation_func, InlineOperation, func, 0) 196 197/* Thread fields */ 198MTERP_OFFSET(offThread_stackOverflowed, Thread, stackOverflowed, 40) 199MTERP_OFFSET(offThread_curFrame, Thread, curFrame, 44) 200MTERP_OFFSET(offThread_exception, Thread, exception, 48) 201MTERP_OFFSET(offThread_jniLocal_nextEntry, \ 202 Thread, jniLocalRefTable.nextEntry, 80) 203 204/* Object fields */ 205MTERP_OFFSET(offObject_clazz, Object, clazz, 0) 206 207/* ArrayObject fields */ 208MTERP_OFFSET(offArrayObject_length, ArrayObject, length, 8) 209#ifdef MTERP_NO_UNALIGN_64 210MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 16) 211#else 212MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 12) 213#endif 214 215/* ClassObject fields */ 216MTERP_OFFSET(offClassObject_descriptor, ClassObject, descriptor, 24) 217MTERP_OFFSET(offClassObject_accessFlags, ClassObject, accessFlags, 32) 218MTERP_OFFSET(offClassObject_pDvmDex, ClassObject, pDvmDex, 40) 219MTERP_OFFSET(offClassObject_status, ClassObject, status, 44) 220MTERP_OFFSET(offClassObject_super, ClassObject, super, 76) 221MTERP_OFFSET(offClassObject_vtableCount, ClassObject, vtableCount, 116) 222MTERP_OFFSET(offClassObject_vtable, ClassObject, vtable, 120) 223 224/* InterpEntry enumeration */ 225MTERP_SIZEOF(sizeofClassStatus, InterpEntry, MTERP_SMALL_ENUM) 226MTERP_CONSTANT(kInterpEntryInstr, 0) 227MTERP_CONSTANT(kInterpEntryReturn, 1) 228MTERP_CONSTANT(kInterpEntryThrow, 2) 229#if defined(WITH_JIT) 230MTERP_CONSTANT(kInterpEntryResume, 3) 231#endif 232 233#if defined(WITH_JIT) 234MTERP_CONSTANT(kJitOff, 0) 235MTERP_CONSTANT(kJitNormal, 1) 236MTERP_CONSTANT(kJitTSelectRequest, 2) 237MTERP_CONSTANT(kJitTSelect, 3) 238MTERP_CONSTANT(kJitTSelectAbort, 4) 239MTERP_CONSTANT(kJitTSelectEnd, 5) 240MTERP_CONSTANT(kJitSingleStep, 6) 241MTERP_CONSTANT(kJitSingleStepEnd, 7) 242#endif 243 244/* ClassStatus enumeration */ 245MTERP_SIZEOF(sizeofClassStatus, ClassStatus, MTERP_SMALL_ENUM) 246MTERP_CONSTANT(CLASS_INITIALIZED, 7) 247 248/* MethodType enumeration */ 249MTERP_SIZEOF(sizeofMethodType, MethodType, MTERP_SMALL_ENUM) 250MTERP_CONSTANT(METHOD_DIRECT, 1) 251MTERP_CONSTANT(METHOD_STATIC, 2) 252MTERP_CONSTANT(METHOD_VIRTUAL, 3) 253MTERP_CONSTANT(METHOD_INTERFACE, 4) 254 255/* ClassObject constants */ 256MTERP_CONSTANT(ACC_PRIVATE, 0x0002) 257MTERP_CONSTANT(ACC_STATIC, 0x0008) 258MTERP_CONSTANT(ACC_NATIVE, 0x0100) 259MTERP_CONSTANT(ACC_INTERFACE, 0x0200) 260MTERP_CONSTANT(ACC_ABSTRACT, 0x0400) 261 262/* flags for dvmMalloc */ 263MTERP_CONSTANT(ALLOC_DONT_TRACK, 0x02) 264 265/* opcode number */ 266MTERP_CONSTANT(OP_MOVE_EXCEPTION, 0x0d) 267