asm-constants.h revision 5dfcc78af479937ba8dafceefd9b1931a88dfaaf
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_MEMBER(_type, _field) != _offset) { \ 15 ALOGE("Bad asm offset %s (%d), should be %d", \ 16 #_name, _offset, OFFSETOF_MEMBER(_type, _field)); \ 17 failed = true; \ 18 } 19# define MTERP_SIZEOF(_name, _type, _size) \ 20 if (sizeof(_type) != (_size)) { \ 21 ALOGE("Bad asm sizeof %s (%d), should be %d", \ 22 #_name, (_size), sizeof(_type)); \ 23 failed = true; \ 24 } 25# define MTERP_CONSTANT(_name, _value) \ 26 if ((_name) != (_value)) { \ 27 ALOGE("Bad asm constant %s (%d), should be %d", \ 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__) || defined(__mips__) 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/* DvmDex fields */ 85MTERP_OFFSET(offDvmDex_pResStrings, DvmDex, pResStrings, 8) 86MTERP_OFFSET(offDvmDex_pResClasses, DvmDex, pResClasses, 12) 87MTERP_OFFSET(offDvmDex_pResMethods, DvmDex, pResMethods, 16) 88MTERP_OFFSET(offDvmDex_pResFields, DvmDex, pResFields, 20) 89MTERP_OFFSET(offDvmDex_pInterfaceCache, DvmDex, pInterfaceCache, 24) 90 91/* StackSaveArea fields */ 92#ifdef EASY_GDB 93MTERP_OFFSET(offStackSaveArea_prevSave, StackSaveArea, prevSave, 0) 94MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 4) 95MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 8) 96MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 12) 97MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 16) 98MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 99 StackSaveArea, xtra.localRefCookie, 16) 100MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 20) 101MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 24) 102#else 103MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 0) 104MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 4) 105MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 8) 106MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 12) 107MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 108 StackSaveArea, xtra.localRefCookie, 12) 109MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 16) 110MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 20) 111#endif 112 113 /* ShadowSpace fields */ 114#if defined(WITH_JIT) && defined(WITH_SELF_VERIFICATION) 115MTERP_OFFSET(offShadowSpace_startPC, ShadowSpace, startPC, 0) 116MTERP_OFFSET(offShadowSpace_fp, ShadowSpace, fp, 4) 117MTERP_OFFSET(offShadowSpace_method, ShadowSpace, method, 8) 118MTERP_OFFSET(offShadowSpace_methodClassDex, ShadowSpace, methodClassDex, 12) 119MTERP_OFFSET(offShadowSpace_retval, ShadowSpace, retval, 16) 120MTERP_OFFSET(offShadowSpace_interpStackEnd, ShadowSpace, interpStackEnd, 24) 121MTERP_OFFSET(offShadowSpace_jitExitState,ShadowSpace, jitExitState, 28) 122MTERP_OFFSET(offShadowSpace_svState, ShadowSpace, selfVerificationState, 32) 123MTERP_OFFSET(offShadowSpace_shadowFP, ShadowSpace, shadowFP, 40) 124#endif 125 126/* InstField fields */ 127MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 16) 128 129/* Field fields */ 130MTERP_OFFSET(offField_clazz, Field, clazz, 0) 131 132/* StaticField fields */ 133MTERP_OFFSET(offStaticField_value, StaticField, value, 16) 134 135/* Method fields */ 136MTERP_OFFSET(offMethod_clazz, Method, clazz, 0) 137MTERP_OFFSET(offMethod_accessFlags, Method, accessFlags, 4) 138MTERP_OFFSET(offMethod_methodIndex, Method, methodIndex, 8) 139MTERP_OFFSET(offMethod_registersSize, Method, registersSize, 10) 140MTERP_OFFSET(offMethod_outsSize, Method, outsSize, 12) 141MTERP_OFFSET(offMethod_name, Method, name, 16) 142MTERP_OFFSET(offMethod_insns, Method, insns, 32) 143MTERP_OFFSET(offMethod_nativeFunc, Method, nativeFunc, 40) 144 145/* InlineOperation fields -- code assumes "func" offset is zero, do not alter */ 146MTERP_OFFSET(offInlineOperation_func, InlineOperation, func, 0) 147 148/* Thread fields */ 149MTERP_OFFSET(offThread_pc, Thread, interpSave.pc, 0) 150MTERP_OFFSET(offThread_curFrame, Thread, interpSave.curFrame, 4) 151MTERP_OFFSET(offThread_method, Thread, interpSave.method, 8) 152MTERP_OFFSET(offThread_methodClassDex, Thread, interpSave.methodClassDex, 12) 153/* make sure all JValue union members are stored at the same offset */ 154MTERP_OFFSET(offThread_retval, Thread, interpSave.retval, 16) 155#ifdef HAVE_BIG_ENDIAN 156MTERP_OFFSET(offThread_retval_z, Thread, interpSave.retval.z, 19) 157#else 158MTERP_OFFSET(offThread_retval_z, Thread, interpSave.retval.z, 16) 159#endif 160MTERP_OFFSET(offThread_retval_i, Thread, interpSave.retval.i, 16) 161MTERP_OFFSET(offThread_retval_j, Thread, interpSave.retval.j, 16) 162MTERP_OFFSET(offThread_retval_l, Thread, interpSave.retval.l, 16) 163MTERP_OFFSET(offThread_bailPtr, Thread, interpSave.bailPtr, 24) 164MTERP_OFFSET(offThread_threadId, Thread, threadId, 36) 165 166//40 167MTERP_OFFSET(offThread_subMode, \ 168 Thread, interpBreak.ctl.subMode, 40) 169MTERP_OFFSET(offThread_breakFlags, \ 170 Thread, interpBreak.ctl.breakFlags, 42) 171MTERP_OFFSET(offThread_curHandlerTable, \ 172 Thread, interpBreak.ctl.curHandlerTable, 44) 173MTERP_OFFSET(offThread_suspendCount, Thread, suspendCount, 48); 174MTERP_OFFSET(offThread_dbgSuspendCount, Thread, dbgSuspendCount, 52); 175MTERP_OFFSET(offThread_cardTable, Thread, cardTable, 56) 176MTERP_OFFSET(offThread_interpStackEnd, Thread, interpStackEnd, 60) 177MTERP_OFFSET(offThread_exception, Thread, exception, 68) 178MTERP_OFFSET(offThread_debugIsMethodEntry, Thread, debugIsMethodEntry, 72) 179MTERP_OFFSET(offThread_interpStackSize, Thread, interpStackSize, 76) 180MTERP_OFFSET(offThread_stackOverflowed, Thread, stackOverflowed, 80) 181MTERP_OFFSET(offThread_mainHandlerTable, Thread, mainHandlerTable, 88) 182MTERP_OFFSET(offThread_singleStepCount, Thread, singleStepCount, 96) 183 184#ifdef WITH_JIT 185MTERP_OFFSET(offThread_jitToInterpEntries,Thread, jitToInterpEntries, 100) 186MTERP_OFFSET(offThread_inJitCodeCache, Thread, inJitCodeCache, 124) 187MTERP_OFFSET(offThread_pJitProfTable, Thread, pJitProfTable, 128) 188MTERP_OFFSET(offThread_jitThreshold, Thread, jitThreshold, 132) 189MTERP_OFFSET(offThread_jitResumeNPC, Thread, jitResumeNPC, 136) 190MTERP_OFFSET(offThread_jitResumeNSP, Thread, jitResumeNSP, 140) 191MTERP_OFFSET(offThread_jitResumeDPC, Thread, jitResumeDPC, 144) 192MTERP_OFFSET(offThread_jitState, Thread, jitState, 148) 193MTERP_OFFSET(offThread_icRechainCount, Thread, icRechainCount, 152) 194MTERP_OFFSET(offThread_pProfileCountdown, Thread, pProfileCountdown, 156) 195MTERP_OFFSET(offThread_callsiteClass, Thread, callsiteClass, 160) 196MTERP_OFFSET(offThread_methodToCall, Thread, methodToCall, 164) 197MTERP_OFFSET(offThread_jniLocal_topCookie, \ 198 Thread, jniLocalRefTable.segmentState.all, 168) 199#if defined(WITH_SELF_VERIFICATION) 200MTERP_OFFSET(offThread_shadowSpace, Thread, shadowSpace, 188) 201#endif 202#else 203MTERP_OFFSET(offThread_jniLocal_topCookie, \ 204 Thread, jniLocalRefTable.segmentState.all, 100) 205#endif 206 207/* Object fields */ 208MTERP_OFFSET(offObject_clazz, Object, clazz, 0) 209MTERP_OFFSET(offObject_lock, Object, lock, 4) 210 211/* Lock shape */ 212MTERP_CONSTANT(LW_LOCK_OWNER_SHIFT, 3) 213MTERP_CONSTANT(LW_HASH_STATE_SHIFT, 1) 214 215/* ArrayObject fields */ 216MTERP_OFFSET(offArrayObject_length, ArrayObject, length, 8) 217#ifdef MTERP_NO_UNALIGN_64 218MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 16) 219#else 220MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 12) 221#endif 222 223/* String fields */ 224MTERP_CONSTANT(STRING_FIELDOFF_VALUE, 8) 225MTERP_CONSTANT(STRING_FIELDOFF_HASHCODE, 12) 226MTERP_CONSTANT(STRING_FIELDOFF_OFFSET, 16) 227MTERP_CONSTANT(STRING_FIELDOFF_COUNT, 20) 228 229#if defined(WITH_JIT) 230/* 231 * Reasons for the non-chaining interpreter entry points 232 * Enums defined in vm/Globals.h 233 */ 234MTERP_CONSTANT(kInlineCacheMiss, 0) 235MTERP_CONSTANT(kCallsiteInterpreted, 1) 236MTERP_CONSTANT(kSwitchOverflow, 2) 237MTERP_CONSTANT(kHeavyweightMonitor, 3) 238 239/* Size of callee save area */ 240MTERP_CONSTANT(JIT_CALLEE_SAVE_DOUBLE_COUNT, 8) 241#endif 242 243/* ClassObject fields */ 244MTERP_OFFSET(offClassObject_descriptor, ClassObject, descriptor, 24) 245MTERP_OFFSET(offClassObject_accessFlags, ClassObject, accessFlags, 32) 246MTERP_OFFSET(offClassObject_pDvmDex, ClassObject, pDvmDex, 40) 247MTERP_OFFSET(offClassObject_status, ClassObject, status, 44) 248MTERP_OFFSET(offClassObject_super, ClassObject, super, 72) 249MTERP_OFFSET(offClassObject_vtableCount, ClassObject, vtableCount, 112) 250MTERP_OFFSET(offClassObject_vtable, ClassObject, vtable, 116) 251 252#if defined(WITH_JIT) 253MTERP_CONSTANT(kJitNot, 0) 254MTERP_CONSTANT(kJitTSelectRequest, 1) 255MTERP_CONSTANT(kJitTSelectRequestHot, 2) 256MTERP_CONSTANT(kJitSelfVerification, 3) 257MTERP_CONSTANT(kJitTSelect, 4) 258MTERP_CONSTANT(kJitTSelectEnd, 5) 259MTERP_CONSTANT(kJitDone, 6) 260 261#if defined(WITH_SELF_VERIFICATION) 262MTERP_CONSTANT(kSVSIdle, 0) 263MTERP_CONSTANT(kSVSStart, 1) 264MTERP_CONSTANT(kSVSPunt, 2) 265MTERP_CONSTANT(kSVSSingleStep, 3) 266MTERP_CONSTANT(kSVSNoProfile, 4) 267MTERP_CONSTANT(kSVSTraceSelect, 5) 268MTERP_CONSTANT(kSVSNormal, 6) 269MTERP_CONSTANT(kSVSNoChain, 7) 270MTERP_CONSTANT(kSVSBackwardBranch, 8) 271MTERP_CONSTANT(kSVSDebugInterp, 9) 272#endif 273#endif 274 275/* ClassStatus enumeration */ 276MTERP_SIZEOF(sizeofClassStatus, ClassStatus, MTERP_SMALL_ENUM) 277MTERP_CONSTANT(CLASS_INITIALIZED, 7) 278 279/* MethodType enumeration */ 280MTERP_SIZEOF(sizeofMethodType, MethodType, MTERP_SMALL_ENUM) 281MTERP_CONSTANT(METHOD_DIRECT, 1) 282MTERP_CONSTANT(METHOD_STATIC, 2) 283MTERP_CONSTANT(METHOD_VIRTUAL, 3) 284MTERP_CONSTANT(METHOD_INTERFACE, 4) 285 286/* ClassObject constants */ 287MTERP_CONSTANT(ACC_PRIVATE, 0x0002) 288MTERP_CONSTANT(ACC_STATIC, 0x0008) 289MTERP_CONSTANT(ACC_NATIVE, 0x0100) 290MTERP_CONSTANT(ACC_INTERFACE, 0x0200) 291MTERP_CONSTANT(ACC_ABSTRACT, 0x0400) 292MTERP_CONSTANT(CLASS_ISFINALIZABLE, 1<<31) 293 294/* flags for dvmMalloc */ 295MTERP_CONSTANT(ALLOC_DONT_TRACK, 0x01) 296 297/* for GC */ 298MTERP_CONSTANT(GC_CARD_SHIFT, 7) 299 300/* opcode number */ 301MTERP_CONSTANT(OP_MOVE_EXCEPTION, 0x0d) 302MTERP_CONSTANT(OP_INVOKE_DIRECT_RANGE, 0x76) 303 304/* flags for interpBreak */ 305MTERP_CONSTANT(kSubModeNormal, 0x0000) 306MTERP_CONSTANT(kSubModeMethodTrace, 0x0001) 307MTERP_CONSTANT(kSubModeEmulatorTrace, 0x0002) 308MTERP_CONSTANT(kSubModeInstCounting, 0x0004) 309MTERP_CONSTANT(kSubModeDebuggerActive, 0x0008) 310MTERP_CONSTANT(kSubModeSuspendPending, 0x0010) 311MTERP_CONSTANT(kSubModeCallbackPending, 0x0020) 312MTERP_CONSTANT(kSubModeCountedStep, 0x0040) 313MTERP_CONSTANT(kSubModeJitTraceBuild, 0x4000) 314MTERP_CONSTANT(kSubModeJitSV, 0x8000) 315MTERP_CONSTANT(kSubModeDebugProfile, 0x000f) 316 317MTERP_CONSTANT(kInterpNoBreak, 0x00) 318MTERP_CONSTANT(kInterpSingleStep, 0x01) 319MTERP_CONSTANT(kInterpSafePoint, 0x02) 320 321MTERP_CONSTANT(DBG_METHOD_ENTRY, 0x04) 322MTERP_CONSTANT(DBG_METHOD_EXIT, 0x08) 323 324#if defined(__thumb__) 325# define PCREL_REF(sym,label) sym-(label+4) 326#else 327# define PCREL_REF(sym,label) sym-(label+8) 328#endif 329