asm-constants.h revision cb3081f675109049e63380170b60871e8275f9a8
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/* MterpGlue fields */ 85MTERP_OFFSET(offGlue_pc, MterpGlue, pc, 0) 86MTERP_OFFSET(offGlue_fp, MterpGlue, fp, 4) 87MTERP_OFFSET(offGlue_retval, MterpGlue, retval, 8) 88MTERP_OFFSET(offGlue_method, MterpGlue, method, 16) 89MTERP_OFFSET(offGlue_methodClassDex, MterpGlue, methodClassDex, 20) 90MTERP_OFFSET(offGlue_self, MterpGlue, self, 24) 91MTERP_OFFSET(offGlue_bailPtr, MterpGlue, bailPtr, 28) 92MTERP_OFFSET(offGlue_interpStackEnd, MterpGlue, interpStackEnd, 32) 93MTERP_OFFSET(offGlue_pSelfSuspendCount, MterpGlue, pSelfSuspendCount, 36) 94MTERP_OFFSET(offGlue_cardTable, MterpGlue, cardTable, 40) 95MTERP_OFFSET(offGlue_pInterpBreak, MterpGlue, pInterpBreak, 44) 96MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 48) 97#if defined(WITH_JIT) 98MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 56) 99MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 60) 100MTERP_OFFSET(offGlue_jitResumeNPC, MterpGlue, jitResumeNPC, 64) 101MTERP_OFFSET(offGlue_jitResumeDPC, MterpGlue, jitResumeDPC, 68) 102MTERP_OFFSET(offGlue_jitThreshold, MterpGlue, jitThreshold, 72) 103MTERP_OFFSET(offGlue_ppJitProfTable, MterpGlue, ppJitProfTable, 76) 104MTERP_OFFSET(offGlue_icRechainCount, MterpGlue, icRechainCount, 80) 105MTERP_OFFSET(offGlue_pProfileCountdown, MterpGlue, pProfileCountdown, 84) 106#if defined(WITH_SELF_VERIFICATION) 107MTERP_OFFSET(offGlue_jitCacheStart, MterpGlue, jitCacheStart, 112) 108MTERP_OFFSET(offGlue_jitCacheEnd, MterpGlue, jitCacheEnd, 116) 109#else 110MTERP_OFFSET(offGlue_jitCacheStart, MterpGlue, jitCacheStart, 108) 111MTERP_OFFSET(offGlue_jitCacheEnd, MterpGlue, jitCacheEnd, 112) 112#endif 113#endif 114/* make sure all JValue union members are stored at the same offset */ 115MTERP_OFFSET(offGlue_retval_z, MterpGlue, retval.z, 8) 116MTERP_OFFSET(offGlue_retval_i, MterpGlue, retval.i, 8) 117MTERP_OFFSET(offGlue_retval_j, MterpGlue, retval.j, 8) 118MTERP_OFFSET(offGlue_retval_l, MterpGlue, retval.l, 8) 119 120/* DvmDex fields */ 121MTERP_OFFSET(offDvmDex_pResStrings, DvmDex, pResStrings, 8) 122MTERP_OFFSET(offDvmDex_pResClasses, DvmDex, pResClasses, 12) 123MTERP_OFFSET(offDvmDex_pResMethods, DvmDex, pResMethods, 16) 124MTERP_OFFSET(offDvmDex_pResFields, DvmDex, pResFields, 20) 125MTERP_OFFSET(offDvmDex_pInterfaceCache, DvmDex, pInterfaceCache, 24) 126 127/* StackSaveArea fields */ 128#ifdef EASY_GDB 129MTERP_OFFSET(offStackSaveArea_prevSave, StackSaveArea, prevSave, 0) 130MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 4) 131MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 8) 132MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 12) 133MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 16) 134MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 135 StackSaveArea, xtra.localRefCookie, 16) 136MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 20) 137MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 24) 138#else 139MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 0) 140MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 4) 141MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 8) 142MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 12) 143MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 144 StackSaveArea, xtra.localRefCookie, 12) 145MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 16) 146MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 20) 147#endif 148 149 /* ShadowSpace fields */ 150#if defined(WITH_JIT) && defined(WITH_SELF_VERIFICATION) 151MTERP_OFFSET(offShadowSpace_startPC, ShadowSpace, startPC, 0) 152MTERP_OFFSET(offShadowSpace_fp, ShadowSpace, fp, 4) 153MTERP_OFFSET(offShadowSpace_glue, ShadowSpace, glue, 8) 154MTERP_OFFSET(offShadowSpace_jitExitState,ShadowSpace, jitExitState, 12) 155MTERP_OFFSET(offShadowSpace_svState, ShadowSpace, selfVerificationState, 16) 156MTERP_OFFSET(offShadowSpace_shadowFP, ShadowSpace, shadowFP, 24) 157MTERP_OFFSET(offShadowSpace_interpState, ShadowSpace, interpState, 32) 158#endif 159 160/* InstField fields */ 161#ifdef PROFILE_FIELD_ACCESS 162MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 24) 163#else 164MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 16) 165#endif 166 167/* Field fields */ 168MTERP_OFFSET(offField_clazz, Field, clazz, 0) 169 170/* StaticField fields */ 171#ifdef PROFILE_FIELD_ACCESS 172MTERP_OFFSET(offStaticField_value, StaticField, value, 24) 173#else 174MTERP_OFFSET(offStaticField_value, StaticField, value, 16) 175#endif 176 177/* Method fields */ 178MTERP_OFFSET(offMethod_clazz, Method, clazz, 0) 179MTERP_OFFSET(offMethod_accessFlags, Method, accessFlags, 4) 180MTERP_OFFSET(offMethod_methodIndex, Method, methodIndex, 8) 181MTERP_OFFSET(offMethod_registersSize, Method, registersSize, 10) 182MTERP_OFFSET(offMethod_outsSize, Method, outsSize, 12) 183MTERP_OFFSET(offMethod_name, Method, name, 16) 184MTERP_OFFSET(offMethod_insns, Method, insns, 32) 185MTERP_OFFSET(offMethod_nativeFunc, Method, nativeFunc, 40) 186 187/* InlineOperation fields -- code assumes "func" offset is zero, do not alter */ 188MTERP_OFFSET(offInlineOperation_func, InlineOperation, func, 0) 189 190/* Thread fields */ 191MTERP_OFFSET(offThread_stackOverflowed, Thread, stackOverflowed, 36) 192MTERP_OFFSET(offThread_curFrame, Thread, curFrame, 40) 193MTERP_OFFSET(offThread_exception, Thread, exception, 44) 194 195#if defined(WITH_JIT) 196MTERP_OFFSET(offThread_inJitCodeCache, Thread, inJitCodeCache, 72) 197#if defined(WITH_SELF_VERIFICATION) 198MTERP_OFFSET(offThread_shadowSpace, Thread, shadowSpace, 76) 199#ifdef USE_INDIRECT_REF 200MTERP_OFFSET(offThread_jniLocal_topCookie, \ 201 Thread, jniLocalRefTable.segmentState.all, 80) 202#else 203MTERP_OFFSET(offThread_jniLocal_topCookie, \ 204 Thread, jniLocalRefTable.nextEntry, 80) 205#endif 206#else 207#ifdef USE_INDIRECT_REF 208MTERP_OFFSET(offThread_jniLocal_topCookie, \ 209 Thread, jniLocalRefTable.segmentState.all, 76) 210#else 211MTERP_OFFSET(offThread_jniLocal_topCookie, \ 212 Thread, jniLocalRefTable.nextEntry, 76) 213#endif 214#endif 215#else 216#ifdef USE_INDIRECT_REF 217MTERP_OFFSET(offThread_jniLocal_topCookie, \ 218 Thread, jniLocalRefTable.segmentState.all, 72) 219#else 220MTERP_OFFSET(offThread_jniLocal_topCookie, \ 221 Thread, jniLocalRefTable.nextEntry, 72) 222#endif 223#endif 224 225/* Object fields */ 226MTERP_OFFSET(offObject_clazz, Object, clazz, 0) 227MTERP_OFFSET(offObject_lock, Object, lock, 4) 228 229/* Lock shape */ 230MTERP_CONSTANT(LW_LOCK_OWNER_SHIFT, 3) 231MTERP_CONSTANT(LW_HASH_STATE_SHIFT, 1) 232 233/* ArrayObject fields */ 234MTERP_OFFSET(offArrayObject_length, ArrayObject, length, 8) 235#ifdef MTERP_NO_UNALIGN_64 236MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 16) 237#else 238MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 12) 239#endif 240 241/* String fields */ 242MTERP_CONSTANT(STRING_FIELDOFF_VALUE, 8) 243MTERP_CONSTANT(STRING_FIELDOFF_HASHCODE, 12) 244MTERP_CONSTANT(STRING_FIELDOFF_OFFSET, 16) 245MTERP_CONSTANT(STRING_FIELDOFF_COUNT, 20) 246 247#if defined(WITH_JIT) 248/* 249 * Reasons for the non-chaining interpreter entry points 250 * Enums defined in vm/Globals.h 251 */ 252MTERP_CONSTANT(kInlineCacheMiss, 0) 253MTERP_CONSTANT(kCallsiteInterpreted, 1) 254MTERP_CONSTANT(kSwitchOverflow, 2) 255MTERP_CONSTANT(kHeavyweightMonitor, 3) 256 257/* Size of callee save area */ 258MTERP_CONSTANT(JIT_CALLEE_SAVE_DOUBLE_COUNT, 8) 259#endif 260 261/* ClassObject fields */ 262MTERP_OFFSET(offClassObject_descriptor, ClassObject, descriptor, 24) 263MTERP_OFFSET(offClassObject_accessFlags, ClassObject, accessFlags, 32) 264MTERP_OFFSET(offClassObject_pDvmDex, ClassObject, pDvmDex, 40) 265MTERP_OFFSET(offClassObject_status, ClassObject, status, 44) 266MTERP_OFFSET(offClassObject_super, ClassObject, super, 72) 267MTERP_OFFSET(offClassObject_vtableCount, ClassObject, vtableCount, 112) 268MTERP_OFFSET(offClassObject_vtable, ClassObject, vtable, 116) 269 270/* InterpEntry enumeration */ 271MTERP_SIZEOF(sizeofClassStatus, InterpEntry, MTERP_SMALL_ENUM) 272MTERP_CONSTANT(kInterpEntryInstr, 0) 273MTERP_CONSTANT(kInterpEntryReturn, 1) 274MTERP_CONSTANT(kInterpEntryThrow, 2) 275#if defined(WITH_JIT) 276MTERP_CONSTANT(kInterpEntryResume, 3) 277#endif 278 279#if defined(WITH_JIT) 280MTERP_CONSTANT(kJitNot, 0) 281MTERP_CONSTANT(kJitTSelectRequest, 1) 282MTERP_CONSTANT(kJitTSelectRequestHot, 2) 283MTERP_CONSTANT(kJitSelfVerification, 3) 284MTERP_CONSTANT(kJitTSelect, 4) 285MTERP_CONSTANT(kJitTSelectEnd, 5) 286MTERP_CONSTANT(kJitSingleStep, 6) 287MTERP_CONSTANT(kJitSingleStepEnd, 7) 288MTERP_CONSTANT(kJitDone, 8) 289 290#if defined(WITH_SELF_VERIFICATION) 291MTERP_CONSTANT(kSVSIdle, 0) 292MTERP_CONSTANT(kSVSStart, 1) 293MTERP_CONSTANT(kSVSPunt, 2) 294MTERP_CONSTANT(kSVSSingleStep, 3) 295MTERP_CONSTANT(kSVSNoProfile, 4) 296MTERP_CONSTANT(kSVSTraceSelect, 5) 297MTERP_CONSTANT(kSVSNormal, 6) 298MTERP_CONSTANT(kSVSNoChain, 7) 299MTERP_CONSTANT(kSVSBackwardBranch, 8) 300MTERP_CONSTANT(kSVSDebugInterp, 9) 301#endif 302#endif 303 304/* ClassStatus enumeration */ 305MTERP_SIZEOF(sizeofClassStatus, ClassStatus, MTERP_SMALL_ENUM) 306MTERP_CONSTANT(CLASS_INITIALIZED, 7) 307 308/* MethodType enumeration */ 309MTERP_SIZEOF(sizeofMethodType, MethodType, MTERP_SMALL_ENUM) 310MTERP_CONSTANT(METHOD_DIRECT, 1) 311MTERP_CONSTANT(METHOD_STATIC, 2) 312MTERP_CONSTANT(METHOD_VIRTUAL, 3) 313MTERP_CONSTANT(METHOD_INTERFACE, 4) 314 315/* ClassObject constants */ 316MTERP_CONSTANT(ACC_PRIVATE, 0x0002) 317MTERP_CONSTANT(ACC_STATIC, 0x0008) 318MTERP_CONSTANT(ACC_NATIVE, 0x0100) 319MTERP_CONSTANT(ACC_INTERFACE, 0x0200) 320MTERP_CONSTANT(ACC_ABSTRACT, 0x0400) 321 322/* flags for dvmMalloc */ 323MTERP_CONSTANT(ALLOC_DONT_TRACK, 0x01) 324 325/* for GC */ 326MTERP_CONSTANT(GC_CARD_SHIFT, 7) 327 328/* opcode number */ 329MTERP_CONSTANT(OP_MOVE_EXCEPTION, 0x0d) 330 331/* flags for interpBreak */ 332MTERP_CONSTANT(kSubModeNormal, 0x0000) 333MTERP_CONSTANT(kSubModeMethodTrace, 0x0001) 334MTERP_CONSTANT(kSubModeEmulatorTrace, 0x0002) 335MTERP_CONSTANT(kSubModeInstCounting, 0x0004) 336MTERP_CONSTANT(kSubModeDebuggerActive, 0x0008) 337MTERP_CONSTANT(kSubModeSuspendRequest, 0x0010) 338