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) */ 85 MTERP_SIZEOF(sizeofGlobal_debuggerActive, gDvm.debuggerActive, 1) 86 MTERP_SIZEOF(sizeofGlobal_activeProfilers, gDvm.activeProfilers, 4) 87 88 /* MterpGlue fields */ 89 MTERP_OFFSET(offGlue_pc, MterpGlue, pc, 0) 90 MTERP_OFFSET(offGlue_fp, MterpGlue, fp, 4) 91 MTERP_OFFSET(offGlue_retval, MterpGlue, retval, 8) 92 MTERP_OFFSET(offGlue_method, MterpGlue, method, 16) 93 MTERP_OFFSET(offGlue_methodClassDex, MterpGlue, methodClassDex, 20) 94 MTERP_OFFSET(offGlue_self, MterpGlue, self, 24) 95 MTERP_OFFSET(offGlue_bailPtr, MterpGlue, bailPtr, 28) 96 MTERP_OFFSET(offGlue_interpStackEnd, MterpGlue, interpStackEnd, 32) 97 MTERP_OFFSET(offGlue_pSelfSuspendCount, MterpGlue, pSelfSuspendCount, 36) 98 MTERP_OFFSET(offGlue_cardTable, MterpGlue, cardTable, 40) 99 MTERP_OFFSET(offGlue_pDebuggerActive, MterpGlue, pDebuggerActive, 44) 100 MTERP_OFFSET(offGlue_pActiveProfilers, MterpGlue, pActiveProfilers, 48) 101 MTERP_OFFSET(offGlue_entryPoint, MterpGlue, entryPoint, 52) 102 #if defined(WITH_JIT) 103 MTERP_OFFSET(offGlue_pJitProfTable, MterpGlue, pJitProfTable, 60) 104 MTERP_OFFSET(offGlue_jitState, MterpGlue, jitState, 64) 105 MTERP_OFFSET(offGlue_jitResumeNPC, MterpGlue, jitResumeNPC, 68) 106 MTERP_OFFSET(offGlue_jitResumeDPC, MterpGlue, jitResumeDPC, 72) 107 MTERP_OFFSET(offGlue_jitThreshold, MterpGlue, jitThreshold, 76) 108 MTERP_OFFSET(offGlue_ppJitProfTable, MterpGlue, ppJitProfTable, 80) 109 MTERP_OFFSET(offGlue_icRechainCount, MterpGlue, icRechainCount, 84) 110 #endif 111 /* make sure all JValue union members are stored at the same offset */ 112 MTERP_OFFSET(offGlue_retval_z, MterpGlue, retval.z, 8) 113 MTERP_OFFSET(offGlue_retval_i, MterpGlue, retval.i, 8) 114 MTERP_OFFSET(offGlue_retval_j, MterpGlue, retval.j, 8) 115 MTERP_OFFSET(offGlue_retval_l, MterpGlue, retval.l, 8) 116 117 /* DvmDex fields */ 118 MTERP_OFFSET(offDvmDex_pResStrings, DvmDex, pResStrings, 8) 119 MTERP_OFFSET(offDvmDex_pResClasses, DvmDex, pResClasses, 12) 120 MTERP_OFFSET(offDvmDex_pResMethods, DvmDex, pResMethods, 16) 121 MTERP_OFFSET(offDvmDex_pResFields, DvmDex, pResFields, 20) 122 MTERP_OFFSET(offDvmDex_pInterfaceCache, DvmDex, pInterfaceCache, 24) 123 124 /* StackSaveArea fields */ 125 #ifdef EASY_GDB 126 MTERP_OFFSET(offStackSaveArea_prevSave, StackSaveArea, prevSave, 0) 127 MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 4) 128 MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 8) 129 MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 12) 130 MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 16) 131 MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 132 StackSaveArea, xtra.localRefCookie, 16) 133 MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 20) 134 MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 24) 135 #else 136 MTERP_OFFSET(offStackSaveArea_prevFrame, StackSaveArea, prevFrame, 0) 137 MTERP_OFFSET(offStackSaveArea_savedPc, StackSaveArea, savedPc, 4) 138 MTERP_OFFSET(offStackSaveArea_method, StackSaveArea, method, 8) 139 MTERP_OFFSET(offStackSaveArea_currentPc, StackSaveArea, xtra.currentPc, 12) 140 MTERP_OFFSET(offStackSaveArea_localRefCookie, \ 141 StackSaveArea, xtra.localRefCookie, 12) 142 MTERP_OFFSET(offStackSaveArea_returnAddr, StackSaveArea, returnAddr, 16) 143 MTERP_SIZEOF(sizeofStackSaveArea, StackSaveArea, 20) 144 #endif 145 146 /* ShadowSpace fields */ 147 #if defined(WITH_JIT) && defined(WITH_SELF_VERIFICATION) 148 MTERP_OFFSET(offShadowSpace_startPC, ShadowSpace, startPC, 0) 149 MTERP_OFFSET(offShadowSpace_fp, ShadowSpace, fp, 4) 150 MTERP_OFFSET(offShadowSpace_glue, ShadowSpace, glue, 8) 151 MTERP_OFFSET(offShadowSpace_jitExitState,ShadowSpace, jitExitState, 12) 152 MTERP_OFFSET(offShadowSpace_svState, ShadowSpace, selfVerificationState, 16) 153 MTERP_OFFSET(offShadowSpace_shadowFP, ShadowSpace, shadowFP, 24) 154 MTERP_OFFSET(offShadowSpace_interpState, ShadowSpace, interpState, 32) 155 #endif 156 157 /* InstField fields */ 158 #ifdef PROFILE_FIELD_ACCESS 159 MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 24) 160 #else 161 MTERP_OFFSET(offInstField_byteOffset, InstField, byteOffset, 16) 162 #endif 163 164 /* Field fields */ 165 MTERP_OFFSET(offField_clazz, Field, clazz, 0) 166 167 /* StaticField fields */ 168 #ifdef PROFILE_FIELD_ACCESS 169 MTERP_OFFSET(offStaticField_value, StaticField, value, 24) 170 #else 171 MTERP_OFFSET(offStaticField_value, StaticField, value, 16) 172 #endif 173 174 /* Method fields */ 175 MTERP_OFFSET(offMethod_clazz, Method, clazz, 0) 176 MTERP_OFFSET(offMethod_accessFlags, Method, accessFlags, 4) 177 MTERP_OFFSET(offMethod_methodIndex, Method, methodIndex, 8) 178 MTERP_OFFSET(offMethod_registersSize, Method, registersSize, 10) 179 MTERP_OFFSET(offMethod_outsSize, Method, outsSize, 12) 180 MTERP_OFFSET(offMethod_name, Method, name, 16) 181 MTERP_OFFSET(offMethod_insns, Method, insns, 32) 182 MTERP_OFFSET(offMethod_nativeFunc, Method, nativeFunc, 40) 183 184 /* InlineOperation fields -- code assumes "func" offset is zero, do not alter */ 185 MTERP_OFFSET(offInlineOperation_func, InlineOperation, func, 0) 186 187 /* Thread fields */ 188 MTERP_OFFSET(offThread_stackOverflowed, Thread, stackOverflowed, 36) 189 MTERP_OFFSET(offThread_curFrame, Thread, curFrame, 40) 190 MTERP_OFFSET(offThread_exception, Thread, exception, 44) 191 192 #if defined(WITH_JIT) 193 MTERP_OFFSET(offThread_inJitCodeCache, Thread, inJitCodeCache, 72) 194 #if defined(WITH_SELF_VERIFICATION) 195 MTERP_OFFSET(offThread_shadowSpace, Thread, shadowSpace, 76) 196 #ifdef USE_INDIRECT_REF 197 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 198 Thread, jniLocalRefTable.segmentState.all, 80) 199 #else 200 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 201 Thread, jniLocalRefTable.nextEntry, 80) 202 #endif 203 #else 204 #ifdef USE_INDIRECT_REF 205 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 206 Thread, jniLocalRefTable.segmentState.all, 76) 207 #else 208 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 209 Thread, jniLocalRefTable.nextEntry, 76) 210 #endif 211 #endif 212 #else 213 #ifdef USE_INDIRECT_REF 214 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 215 Thread, jniLocalRefTable.segmentState.all, 72) 216 #else 217 MTERP_OFFSET(offThread_jniLocal_topCookie, \ 218 Thread, jniLocalRefTable.nextEntry, 72) 219 #endif 220 #endif 221 222 /* Object fields */ 223 MTERP_OFFSET(offObject_clazz, Object, clazz, 0) 224 MTERP_OFFSET(offObject_lock, Object, lock, 4) 225 226 /* Lock shape */ 227 MTERP_CONSTANT(LW_LOCK_OWNER_SHIFT, 3) 228 MTERP_CONSTANT(LW_HASH_STATE_SHIFT, 1) 229 230 /* ArrayObject fields */ 231 MTERP_OFFSET(offArrayObject_length, ArrayObject, length, 8) 232 #ifdef MTERP_NO_UNALIGN_64 233 MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 16) 234 #else 235 MTERP_OFFSET(offArrayObject_contents, ArrayObject, contents, 12) 236 #endif 237 238 /* String fields */ 239 MTERP_CONSTANT(STRING_FIELDOFF_VALUE, 8) 240 MTERP_CONSTANT(STRING_FIELDOFF_HASHCODE, 12) 241 MTERP_CONSTANT(STRING_FIELDOFF_OFFSET, 16) 242 MTERP_CONSTANT(STRING_FIELDOFF_COUNT, 20) 243 244 #if defined(WITH_JIT) 245 /* 246 * Reasons for the non-chaining interpreter entry points 247 * Enums defined in vm/Globals.h 248 */ 249 MTERP_CONSTANT(kInlineCacheMiss, 0) 250 MTERP_CONSTANT(kCallsiteInterpreted, 1) 251 MTERP_CONSTANT(kSwitchOverflow, 2) 252 MTERP_CONSTANT(kHeavyweightMonitor, 3) 253 254 /* Size of callee save area */ 255 MTERP_CONSTANT(JIT_CALLEE_SAVE_DOUBLE_COUNT, 8) 256 #endif 257 258 /* ClassObject fields */ 259 MTERP_OFFSET(offClassObject_descriptor, ClassObject, descriptor, 24) 260 MTERP_OFFSET(offClassObject_accessFlags, ClassObject, accessFlags, 32) 261 MTERP_OFFSET(offClassObject_pDvmDex, ClassObject, pDvmDex, 40) 262 MTERP_OFFSET(offClassObject_status, ClassObject, status, 44) 263 MTERP_OFFSET(offClassObject_super, ClassObject, super, 72) 264 MTERP_OFFSET(offClassObject_vtableCount, ClassObject, vtableCount, 112) 265 MTERP_OFFSET(offClassObject_vtable, ClassObject, vtable, 116) 266 267 /* InterpEntry enumeration */ 268 MTERP_SIZEOF(sizeofClassStatus, InterpEntry, MTERP_SMALL_ENUM) 269 MTERP_CONSTANT(kInterpEntryInstr, 0) 270 MTERP_CONSTANT(kInterpEntryReturn, 1) 271 MTERP_CONSTANT(kInterpEntryThrow, 2) 272 #if defined(WITH_JIT) 273 MTERP_CONSTANT(kInterpEntryResume, 3) 274 #endif 275 276 #if defined(WITH_JIT) 277 MTERP_CONSTANT(kJitNot, 0) 278 MTERP_CONSTANT(kJitTSelectRequest, 1) 279 MTERP_CONSTANT(kJitTSelectRequestHot, 2) 280 MTERP_CONSTANT(kJitSelfVerification, 3) 281 MTERP_CONSTANT(kJitTSelect, 4) 282 MTERP_CONSTANT(kJitTSelectEnd, 5) 283 MTERP_CONSTANT(kJitSingleStep, 6) 284 MTERP_CONSTANT(kJitSingleStepEnd, 7) 285 MTERP_CONSTANT(kJitDone, 8) 286 287 #if defined(WITH_SELF_VERIFICATION) 288 MTERP_CONSTANT(kSVSIdle, 0) 289 MTERP_CONSTANT(kSVSStart, 1) 290 MTERP_CONSTANT(kSVSPunt, 2) 291 MTERP_CONSTANT(kSVSSingleStep, 3) 292 MTERP_CONSTANT(kSVSNoProfile, 4) 293 MTERP_CONSTANT(kSVSTraceSelect, 5) 294 MTERP_CONSTANT(kSVSNormal, 6) 295 MTERP_CONSTANT(kSVSNoChain, 7) 296 MTERP_CONSTANT(kSVSBackwardBranch, 8) 297 MTERP_CONSTANT(kSVSDebugInterp, 9) 298 #endif 299 #endif 300 301 /* ClassStatus enumeration */ 302 MTERP_SIZEOF(sizeofClassStatus, ClassStatus, MTERP_SMALL_ENUM) 303 MTERP_CONSTANT(CLASS_INITIALIZED, 7) 304 305 /* MethodType enumeration */ 306 MTERP_SIZEOF(sizeofMethodType, MethodType, MTERP_SMALL_ENUM) 307 MTERP_CONSTANT(METHOD_DIRECT, 1) 308 MTERP_CONSTANT(METHOD_STATIC, 2) 309 MTERP_CONSTANT(METHOD_VIRTUAL, 3) 310 MTERP_CONSTANT(METHOD_INTERFACE, 4) 311 312 /* ClassObject constants */ 313 MTERP_CONSTANT(ACC_PRIVATE, 0x0002) 314 MTERP_CONSTANT(ACC_STATIC, 0x0008) 315 MTERP_CONSTANT(ACC_NATIVE, 0x0100) 316 MTERP_CONSTANT(ACC_INTERFACE, 0x0200) 317 MTERP_CONSTANT(ACC_ABSTRACT, 0x0400) 318 319 /* flags for dvmMalloc */ 320 MTERP_CONSTANT(ALLOC_DONT_TRACK, 0x01) 321 322 /* for GC */ 323 MTERP_CONSTANT(GC_CARD_SHIFT, 7) 324 325 /* opcode number */ 326 MTERP_CONSTANT(OP_MOVE_EXCEPTION, 0x0d) 327