buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | /* |
| 18 | * This file contains codegen for the Thumb2 ISA and is intended to be |
| 19 | * includes by: |
| 20 | * |
| 21 | * Codegen-$(TARGET_ARCH_VARIANT).c |
| 22 | * |
| 23 | */ |
| 24 | |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 25 | #define SLOW_FIELD_PATH (cUnit->enableDebug & (1 << kDebugSlowFieldPath)) |
| 26 | #define SLOW_INVOKE_PATH (cUnit->enableDebug & (1 << kDebugSlowInvokePath)) |
| 27 | #define SLOW_STRING_PATH (cUnit->enableDebug & (1 << kDebugSlowStringPath)) |
| 28 | #define SLOW_TYPE_PATH (cUnit->enableDebug & (1 << kDebugSlowTypePath)) |
| 29 | #define EXERCISE_SLOWEST_FIELD_PATH (cUnit->enableDebug & \ |
| 30 | (1 << kDebugSlowestFieldPath)) |
| 31 | #define EXERCISE_SLOWEST_STRING_PATH (cUnit->enableDebug & \ |
| 32 | (1 << kDebugSlowestStringPath)) |
buzbee | 34c77ad | 2012-01-11 13:01:32 -0800 | [diff] [blame] | 33 | #define EXERCISE_RESOLVE_METHOD (cUnit->enableDebug & \ |
| 34 | (1 << kDebugExerciseResolveMethod)) |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 35 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 36 | namespace art { |
| 37 | |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 38 | STATIC RegLocation getRetLoc(CompilationUnit* cUnit); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 39 | |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 40 | void warnIfUnresolved(CompilationUnit* cUnit, int fieldIdx, Field* field) { |
| 41 | if (field == NULL) { |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 42 | const DexFile::FieldId& field_id = cUnit->dex_file->GetFieldId(fieldIdx); |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 43 | std::string class_name(cUnit->dex_file->GetFieldDeclaringClassDescriptor(field_id)); |
| 44 | std::string field_name(cUnit->dex_file->GetFieldName(field_id)); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 45 | LOG(INFO) << "Field " << PrettyDescriptor(class_name) << "." << field_name |
Elliott Hughes | 9557241 | 2011-12-13 18:14:20 -0800 | [diff] [blame] | 46 | << " unresolved at compile time"; |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 47 | } else { |
| 48 | // We also use the slow path for wide volatile fields. |
| 49 | } |
| 50 | } |
| 51 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 52 | /* |
| 53 | * Construct an s4 from two consecutive half-words of switch data. |
| 54 | * This needs to check endianness because the DEX optimizer only swaps |
| 55 | * half-words in instruction stream. |
| 56 | * |
| 57 | * "switchData" must be 32-bit aligned. |
| 58 | */ |
| 59 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 60 | STATIC inline s4 s4FromSwitchData(const void* switchData) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 61 | return *(s4*) switchData; |
| 62 | } |
| 63 | #else |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 64 | STATIC inline s4 s4FromSwitchData(const void* switchData) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 65 | u2* data = switchData; |
| 66 | return data[0] | (((s4) data[1]) << 16); |
| 67 | } |
| 68 | #endif |
| 69 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 70 | STATIC ArmLIR* callRuntimeHelper(CompilationUnit* cUnit, int reg) |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 71 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 72 | oatClobberCalleeSave(cUnit); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 73 | return opReg(cUnit, kOpBlx, reg); |
| 74 | } |
| 75 | |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 76 | /* Generate unconditional branch instructions */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 77 | STATIC ArmLIR* genUnconditionalBranch(CompilationUnit* cUnit, ArmLIR* target) |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 78 | { |
| 79 | ArmLIR* branch = opNone(cUnit, kOpUncondBr); |
| 80 | branch->generic.target = (LIR*) target; |
| 81 | return branch; |
| 82 | } |
| 83 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 84 | /* |
| 85 | * Generate a Thumb2 IT instruction, which can nullify up to |
| 86 | * four subsequent instructions based on a condition and its |
| 87 | * inverse. The condition applies to the first instruction, which |
| 88 | * is executed if the condition is met. The string "guide" consists |
| 89 | * of 0 to 3 chars, and applies to the 2nd through 4th instruction. |
| 90 | * A "T" means the instruction is executed if the condition is |
| 91 | * met, and an "E" means the instruction is executed if the condition |
| 92 | * is not met. |
| 93 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 94 | STATIC ArmLIR* genIT(CompilationUnit* cUnit, ArmConditionCode code, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 95 | const char* guide) |
| 96 | { |
| 97 | int mask; |
| 98 | int condBit = code & 1; |
| 99 | int altBit = condBit ^ 1; |
| 100 | int mask3 = 0; |
| 101 | int mask2 = 0; |
| 102 | int mask1 = 0; |
| 103 | |
| 104 | //Note: case fallthroughs intentional |
| 105 | switch(strlen(guide)) { |
| 106 | case 3: |
| 107 | mask1 = (guide[2] == 'T') ? condBit : altBit; |
| 108 | case 2: |
| 109 | mask2 = (guide[1] == 'T') ? condBit : altBit; |
| 110 | case 1: |
| 111 | mask3 = (guide[0] == 'T') ? condBit : altBit; |
| 112 | break; |
| 113 | case 0: |
| 114 | break; |
| 115 | default: |
| 116 | LOG(FATAL) << "OAT: bad case in genIT"; |
| 117 | } |
| 118 | mask = (mask3 << 3) | (mask2 << 2) | (mask1 << 1) | |
| 119 | (1 << (3 - strlen(guide))); |
| 120 | return newLIR2(cUnit, kThumb2It, code, mask); |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | * Insert a kArmPseudoCaseLabel at the beginning of the Dalvik |
| 125 | * offset vaddr. This label will be used to fix up the case |
| 126 | * branch table during the assembly phase. Be sure to set |
| 127 | * all resource flags on this to prevent code motion across |
| 128 | * target boundaries. KeyVal is just there for debugging. |
| 129 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 130 | STATIC ArmLIR* insertCaseLabel(CompilationUnit* cUnit, int vaddr, int keyVal) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 131 | { |
| 132 | ArmLIR* lir; |
| 133 | for (lir = (ArmLIR*)cUnit->firstLIRInsn; lir; lir = NEXT_LIR(lir)) { |
| 134 | if ((lir->opcode == kArmPseudoDalvikByteCodeBoundary) && |
| 135 | (lir->generic.dalvikOffset == vaddr)) { |
| 136 | ArmLIR* newLabel = (ArmLIR*)oatNew(sizeof(ArmLIR), true); |
| 137 | newLabel->generic.dalvikOffset = vaddr; |
| 138 | newLabel->opcode = kArmPseudoCaseLabel; |
| 139 | newLabel->operands[0] = keyVal; |
| 140 | oatInsertLIRAfter((LIR*)lir, (LIR*)newLabel); |
| 141 | return newLabel; |
| 142 | } |
| 143 | } |
| 144 | oatCodegenDump(cUnit); |
| 145 | LOG(FATAL) << "Error: didn't find vaddr 0x" << std::hex << vaddr; |
| 146 | return NULL; // Quiet gcc |
| 147 | } |
| 148 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 149 | STATIC void markPackedCaseLabels(CompilationUnit* cUnit, SwitchTable *tabRec) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 150 | { |
| 151 | const u2* table = tabRec->table; |
| 152 | int baseVaddr = tabRec->vaddr; |
| 153 | int *targets = (int*)&table[4]; |
| 154 | int entries = table[1]; |
| 155 | int lowKey = s4FromSwitchData(&table[2]); |
| 156 | for (int i = 0; i < entries; i++) { |
| 157 | tabRec->targets[i] = insertCaseLabel(cUnit, baseVaddr + targets[i], |
| 158 | i + lowKey); |
| 159 | } |
| 160 | } |
| 161 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 162 | STATIC void markSparseCaseLabels(CompilationUnit* cUnit, SwitchTable *tabRec) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 163 | { |
| 164 | const u2* table = tabRec->table; |
| 165 | int baseVaddr = tabRec->vaddr; |
| 166 | int entries = table[1]; |
| 167 | int* keys = (int*)&table[2]; |
| 168 | int* targets = &keys[entries]; |
| 169 | for (int i = 0; i < entries; i++) { |
| 170 | tabRec->targets[i] = insertCaseLabel(cUnit, baseVaddr + targets[i], |
| 171 | keys[i]); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | void oatProcessSwitchTables(CompilationUnit* cUnit) |
| 176 | { |
| 177 | GrowableListIterator iterator; |
| 178 | oatGrowableListIteratorInit(&cUnit->switchTables, &iterator); |
| 179 | while (true) { |
| 180 | SwitchTable *tabRec = (SwitchTable *) oatGrowableListIteratorNext( |
| 181 | &iterator); |
| 182 | if (tabRec == NULL) break; |
| 183 | if (tabRec->table[0] == kPackedSwitchSignature) |
| 184 | markPackedCaseLabels(cUnit, tabRec); |
| 185 | else if (tabRec->table[0] == kSparseSwitchSignature) |
| 186 | markSparseCaseLabels(cUnit, tabRec); |
| 187 | else { |
| 188 | LOG(FATAL) << "Invalid switch table"; |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 193 | STATIC void dumpSparseSwitchTable(const u2* table) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 194 | /* |
| 195 | * Sparse switch data format: |
| 196 | * ushort ident = 0x0200 magic value |
| 197 | * ushort size number of entries in the table; > 0 |
| 198 | * int keys[size] keys, sorted low-to-high; 32-bit aligned |
| 199 | * int targets[size] branch targets, relative to switch opcode |
| 200 | * |
| 201 | * Total size is (2+size*4) 16-bit code units. |
| 202 | */ |
| 203 | { |
| 204 | u2 ident = table[0]; |
| 205 | int entries = table[1]; |
| 206 | int* keys = (int*)&table[2]; |
| 207 | int* targets = &keys[entries]; |
| 208 | LOG(INFO) << "Sparse switch table - ident:0x" << std::hex << ident << |
| 209 | ", entries: " << std::dec << entries; |
| 210 | for (int i = 0; i < entries; i++) { |
| 211 | LOG(INFO) << " Key[" << keys[i] << "] -> 0x" << std::hex << |
| 212 | targets[i]; |
| 213 | } |
| 214 | } |
| 215 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 216 | STATIC void dumpPackedSwitchTable(const u2* table) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 217 | /* |
| 218 | * Packed switch data format: |
| 219 | * ushort ident = 0x0100 magic value |
| 220 | * ushort size number of entries in the table |
| 221 | * int first_key first (and lowest) switch case value |
| 222 | * int targets[size] branch targets, relative to switch opcode |
| 223 | * |
| 224 | * Total size is (4+size*2) 16-bit code units. |
| 225 | */ |
| 226 | { |
| 227 | u2 ident = table[0]; |
| 228 | int* targets = (int*)&table[4]; |
| 229 | int entries = table[1]; |
| 230 | int lowKey = s4FromSwitchData(&table[2]); |
| 231 | LOG(INFO) << "Packed switch table - ident:0x" << std::hex << ident << |
| 232 | ", entries: " << std::dec << entries << ", lowKey: " << lowKey; |
| 233 | for (int i = 0; i < entries; i++) { |
| 234 | LOG(INFO) << " Key[" << (i + lowKey) << "] -> 0x" << std::hex << |
| 235 | targets[i]; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * The sparse table in the literal pool is an array of <key,displacement> |
| 241 | * pairs. For each set, we'll load them as a pair using ldmia. |
| 242 | * This means that the register number of the temp we use for the key |
| 243 | * must be lower than the reg for the displacement. |
| 244 | * |
| 245 | * The test loop will look something like: |
| 246 | * |
| 247 | * adr rBase, <table> |
| 248 | * ldr rVal, [rSP, vRegOff] |
| 249 | * mov rIdx, #tableSize |
| 250 | * lp: |
| 251 | * ldmia rBase!, {rKey, rDisp} |
| 252 | * sub rIdx, #1 |
| 253 | * cmp rVal, rKey |
| 254 | * ifeq |
| 255 | * add rPC, rDisp ; This is the branch from which we compute displacement |
| 256 | * cbnz rIdx, lp |
| 257 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 258 | STATIC void genSparseSwitch(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 259 | RegLocation rlSrc) |
| 260 | { |
| 261 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 262 | if (cUnit->printMe) { |
| 263 | dumpSparseSwitchTable(table); |
| 264 | } |
| 265 | // Add the table to the list - we'll process it later |
| 266 | SwitchTable *tabRec = (SwitchTable *)oatNew(sizeof(SwitchTable), |
| 267 | true); |
| 268 | tabRec->table = table; |
| 269 | tabRec->vaddr = mir->offset; |
| 270 | int size = table[1]; |
| 271 | tabRec->targets = (ArmLIR* *)oatNew(size * sizeof(ArmLIR*), true); |
| 272 | oatInsertGrowableList(&cUnit->switchTables, (intptr_t)tabRec); |
| 273 | |
| 274 | // Get the switch value |
| 275 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 276 | int rBase = oatAllocTemp(cUnit); |
| 277 | /* Allocate key and disp temps */ |
| 278 | int rKey = oatAllocTemp(cUnit); |
| 279 | int rDisp = oatAllocTemp(cUnit); |
| 280 | // Make sure rKey's register number is less than rDisp's number for ldmia |
| 281 | if (rKey > rDisp) { |
| 282 | int tmp = rDisp; |
| 283 | rDisp = rKey; |
| 284 | rKey = tmp; |
| 285 | } |
| 286 | // Materialize a pointer to the switch table |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 287 | newLIR3(cUnit, kThumb2Adr, rBase, 0, (intptr_t)tabRec); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 288 | // Set up rIdx |
| 289 | int rIdx = oatAllocTemp(cUnit); |
| 290 | loadConstant(cUnit, rIdx, size); |
| 291 | // Establish loop branch target |
| 292 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 293 | target->defMask = ENCODE_ALL; |
| 294 | // Load next key/disp |
| 295 | newLIR2(cUnit, kThumb2LdmiaWB, rBase, (1 << rKey) | (1 << rDisp)); |
| 296 | opRegReg(cUnit, kOpCmp, rKey, rlSrc.lowReg); |
| 297 | // Go if match. NOTE: No instruction set switch here - must stay Thumb2 |
| 298 | genIT(cUnit, kArmCondEq, ""); |
| 299 | ArmLIR* switchBranch = newLIR1(cUnit, kThumb2AddPCR, rDisp); |
| 300 | tabRec->bxInst = switchBranch; |
| 301 | // Needs to use setflags encoding here |
| 302 | newLIR3(cUnit, kThumb2SubsRRI12, rIdx, rIdx, 1); |
| 303 | ArmLIR* branch = opCondBranch(cUnit, kArmCondNe); |
| 304 | branch->generic.target = (LIR*)target; |
| 305 | } |
| 306 | |
| 307 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 308 | STATIC void genPackedSwitch(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 309 | RegLocation rlSrc) |
| 310 | { |
| 311 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 312 | if (cUnit->printMe) { |
| 313 | dumpPackedSwitchTable(table); |
| 314 | } |
| 315 | // Add the table to the list - we'll process it later |
| 316 | SwitchTable *tabRec = (SwitchTable *)oatNew(sizeof(SwitchTable), |
| 317 | true); |
| 318 | tabRec->table = table; |
| 319 | tabRec->vaddr = mir->offset; |
| 320 | int size = table[1]; |
| 321 | tabRec->targets = (ArmLIR* *)oatNew(size * sizeof(ArmLIR*), true); |
| 322 | oatInsertGrowableList(&cUnit->switchTables, (intptr_t)tabRec); |
| 323 | |
| 324 | // Get the switch value |
| 325 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 326 | int tableBase = oatAllocTemp(cUnit); |
| 327 | // Materialize a pointer to the switch table |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 328 | newLIR3(cUnit, kThumb2Adr, tableBase, 0, (intptr_t)tabRec); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 329 | int lowKey = s4FromSwitchData(&table[2]); |
| 330 | int keyReg; |
| 331 | // Remove the bias, if necessary |
| 332 | if (lowKey == 0) { |
| 333 | keyReg = rlSrc.lowReg; |
| 334 | } else { |
| 335 | keyReg = oatAllocTemp(cUnit); |
| 336 | opRegRegImm(cUnit, kOpSub, keyReg, rlSrc.lowReg, lowKey); |
| 337 | } |
| 338 | // Bounds check - if < 0 or >= size continue following switch |
| 339 | opRegImm(cUnit, kOpCmp, keyReg, size-1); |
| 340 | ArmLIR* branchOver = opCondBranch(cUnit, kArmCondHi); |
| 341 | |
| 342 | // Load the displacement from the switch table |
| 343 | int dispReg = oatAllocTemp(cUnit); |
| 344 | loadBaseIndexed(cUnit, tableBase, keyReg, dispReg, 2, kWord); |
| 345 | |
| 346 | // ..and go! NOTE: No instruction set switch here - must stay Thumb2 |
| 347 | ArmLIR* switchBranch = newLIR1(cUnit, kThumb2AddPCR, dispReg); |
| 348 | tabRec->bxInst = switchBranch; |
| 349 | |
| 350 | /* branchOver target here */ |
| 351 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 352 | target->defMask = ENCODE_ALL; |
| 353 | branchOver->generic.target = (LIR*)target; |
| 354 | } |
| 355 | |
| 356 | /* |
| 357 | * Array data table format: |
| 358 | * ushort ident = 0x0300 magic value |
| 359 | * ushort width width of each element in the table |
| 360 | * uint size number of elements in the table |
| 361 | * ubyte data[size*width] table of data values (may contain a single-byte |
| 362 | * padding at the end) |
| 363 | * |
| 364 | * Total size is 4+(width * size + 1)/2 16-bit code units. |
| 365 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 366 | STATIC void genFillArrayData(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 367 | RegLocation rlSrc) |
| 368 | { |
| 369 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 370 | // Add the table to the list - we'll process it later |
| 371 | FillArrayData *tabRec = (FillArrayData *) |
| 372 | oatNew(sizeof(FillArrayData), true); |
| 373 | tabRec->table = table; |
| 374 | tabRec->vaddr = mir->offset; |
| 375 | u2 width = tabRec->table[1]; |
| 376 | u4 size = tabRec->table[2] | (((u4)tabRec->table[3]) << 16); |
| 377 | tabRec->size = (size * width) + 8; |
| 378 | |
| 379 | oatInsertGrowableList(&cUnit->fillArrayData, (intptr_t)tabRec); |
| 380 | |
| 381 | // Making a call - use explicit registers |
| 382 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
| 383 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 384 | loadWordDisp(cUnit, rSELF, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 385 | OFFSETOF_MEMBER(Thread, pHandleFillArrayDataFromCode), rLR); |
buzbee | e6d6196 | 2011-08-27 11:58:19 -0700 | [diff] [blame] | 386 | // Materialize a pointer to the fill data image |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 387 | newLIR3(cUnit, kThumb2Adr, r1, 0, (intptr_t)tabRec); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 388 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | /* |
| 392 | * Mark garbage collection card. Skip if the value we're storing is null. |
| 393 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 394 | STATIC void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 395 | { |
| 396 | int regCardBase = oatAllocTemp(cUnit); |
| 397 | int regCardNo = oatAllocTemp(cUnit); |
| 398 | ArmLIR* branchOver = genCmpImmBranch(cUnit, kArmCondEq, valReg, 0); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 399 | loadWordDisp(cUnit, rSELF, Thread::CardTableOffset().Int32Value(), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 400 | regCardBase); |
| 401 | opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, GC_CARD_SHIFT); |
| 402 | storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0, |
| 403 | kUnsignedByte); |
| 404 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 405 | target->defMask = ENCODE_ALL; |
| 406 | branchOver->generic.target = (LIR*)target; |
| 407 | oatFreeTemp(cUnit, regCardBase); |
| 408 | oatFreeTemp(cUnit, regCardNo); |
| 409 | } |
| 410 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 411 | /* |
| 412 | * Helper function for Iget/put when field not resolved at compile time. |
| 413 | * Will trash call temps and return with the field offset in r0. |
| 414 | */ |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 415 | STATIC void getFieldOffset(CompilationUnit* cUnit, MIR* mir, Field* fieldPtr) |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 416 | { |
| 417 | int fieldIdx = mir->dalvikInsn.vC; |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 418 | oatFlushAllRegs(cUnit); |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 419 | warnIfUnresolved(cUnit, fieldIdx, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 420 | oatLockCallTemps(cUnit); // Explicit register usage |
| 421 | loadCurrMethodDirect(cUnit, r1); // arg1 <= Method* |
| 422 | loadWordDisp(cUnit, r1, |
| 423 | Method::DexCacheResolvedFieldsOffset().Int32Value(), r0); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 424 | loadWordDisp(cUnit, r0, Array::DataOffset().Int32Value() + |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 425 | sizeof(int32_t*)* fieldIdx, r0); |
| 426 | /* |
| 427 | * For testing, omit the test for run-time resolution. This will |
| 428 | * force all accesses to go through the runtime resolution path. |
| 429 | */ |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 430 | ArmLIR* branchOver = NULL; |
| 431 | if (!EXERCISE_SLOWEST_FIELD_PATH) { |
| 432 | branchOver = genCmpImmBranch(cUnit, kArmCondNe, r0, 0); |
| 433 | } |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 434 | // Resolve |
| 435 | loadWordDisp(cUnit, rSELF, |
Brian Carlstrom | 845490b | 2011-09-19 15:56:53 -0700 | [diff] [blame] | 436 | OFFSETOF_MEMBER(Thread, pFindInstanceFieldFromCode), rLR); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 437 | loadConstant(cUnit, r0, fieldIdx); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 438 | callRuntimeHelper(cUnit, rLR); // FindInstanceFieldFromCoderesolveTypeFromCode(idx, method) |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 439 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 440 | target->defMask = ENCODE_ALL; |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 441 | if (!EXERCISE_SLOWEST_FIELD_PATH) { |
| 442 | branchOver->generic.target = (LIR*)target; |
| 443 | } |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 444 | // Free temps (except for r0) |
| 445 | oatFreeTemp(cUnit, r1); |
| 446 | oatFreeTemp(cUnit, r2); |
| 447 | oatFreeTemp(cUnit, r3); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 448 | loadWordDisp(cUnit, r0, Field::OffsetOffset().Int32Value(), r0); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 449 | } |
| 450 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 451 | STATIC void genIGet(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 452 | RegLocation rlDest, RegLocation rlObj) |
| 453 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 454 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 455 | RegLocation rlResult; |
| 456 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 457 | if (SLOW_FIELD_PATH || fieldPtr == NULL) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 458 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 459 | // Field offset in r0 |
| 460 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 461 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 462 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 463 | loadBaseIndexed(cUnit, rlObj.lowReg, r0, rlResult.lowReg, 0, kWord); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 464 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 465 | storeValue(cUnit, rlDest, rlResult); |
| 466 | } else { |
| 467 | #if ANDROID_SMP != 0 |
Elliott Hughes | 1d3f114 | 2011-09-13 12:00:00 -0700 | [diff] [blame] | 468 | bool isVolatile = fieldPtr->IsVolatile(); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 469 | #else |
| 470 | bool isVolatile = false; |
| 471 | #endif |
| 472 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 473 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 474 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 475 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 476 | loadBaseDisp(cUnit, mir, rlObj.lowReg, fieldOffset, rlResult.lowReg, |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 477 | kWord, rlObj.sRegLow); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 478 | if (isVolatile) { |
| 479 | oatGenMemBarrier(cUnit, kSY); |
| 480 | } |
| 481 | storeValue(cUnit, rlDest, rlResult); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 482 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 483 | } |
| 484 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 485 | STATIC void genIPut(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 486 | RegLocation rlSrc, RegLocation rlObj, bool isObject) |
| 487 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 488 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 489 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 490 | if (SLOW_FIELD_PATH || fieldPtr == NULL) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 491 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 492 | // Field offset in r0 |
| 493 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 494 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 495 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 496 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 497 | storeBaseIndexed(cUnit, rlObj.lowReg, r0, rlSrc.lowReg, 0, kWord); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 498 | } else { |
| 499 | #if ANDROID_SMP != 0 |
Elliott Hughes | 1d3f114 | 2011-09-13 12:00:00 -0700 | [diff] [blame] | 500 | bool isVolatile = fieldPtr->IsVolatile(); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 501 | #else |
| 502 | bool isVolatile = false; |
| 503 | #endif |
| 504 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 505 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 506 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 507 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 508 | |
| 509 | if (isVolatile) { |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 510 | oatGenMemBarrier(cUnit, kST); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 511 | } |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 512 | storeBaseDisp(cUnit, rlObj.lowReg, fieldOffset, rlSrc.lowReg, kWord); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 513 | if (isVolatile) { |
| 514 | oatGenMemBarrier(cUnit, kSY); |
| 515 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 516 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 517 | if (isObject) { |
| 518 | /* NOTE: marking card based on object head */ |
| 519 | markGCCard(cUnit, rlSrc.lowReg, rlObj.lowReg); |
| 520 | } |
| 521 | } |
| 522 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 523 | STATIC void genIGetWide(CompilationUnit* cUnit, MIR* mir, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 524 | RegLocation rlObj) |
| 525 | { |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 526 | RegLocation rlResult; |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 527 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 528 | #if ANDROID_SMP != 0 |
| 529 | bool isVolatile = (fieldPtr == NULL) || fieldPtr->IsVolatile(); |
| 530 | #else |
| 531 | bool isVolatile = false; |
| 532 | #endif |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 533 | if (SLOW_FIELD_PATH || (fieldPtr == NULL) || isVolatile) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 534 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 535 | // Field offset in r0 |
| 536 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 537 | rlResult = oatEvalLoc(cUnit, rlDest, kAnyReg, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 538 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 539 | opRegReg(cUnit, kOpAdd, r0, rlObj.lowReg); |
| 540 | loadPair(cUnit, r0, rlResult.lowReg, rlResult.highReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 541 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 542 | storeValueWide(cUnit, rlDest, rlResult); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 543 | } else { |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 544 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 545 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 546 | int regPtr = oatAllocTemp(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 547 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 548 | DCHECK(rlDest.wide); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 549 | |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 550 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 551 | opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset); |
| 552 | rlResult = oatEvalLoc(cUnit, rlDest, kAnyReg, true); |
| 553 | |
| 554 | loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg); |
| 555 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 556 | oatFreeTemp(cUnit, regPtr); |
| 557 | storeValueWide(cUnit, rlDest, rlResult); |
| 558 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 559 | } |
| 560 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 561 | STATIC void genIPutWide(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 562 | RegLocation rlObj) |
| 563 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 564 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 565 | #if ANDROID_SMP != 0 |
| 566 | bool isVolatile = (fieldPtr == NULL) || fieldPtr->IsVolatile(); |
| 567 | #else |
| 568 | bool isVolatile = false; |
| 569 | #endif |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 570 | if (SLOW_FIELD_PATH || (fieldPtr == NULL) || isVolatile) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 571 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 572 | // Field offset in r0 |
| 573 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 574 | rlSrc = loadValueWide(cUnit, rlSrc, kAnyReg); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 575 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 576 | opRegReg(cUnit, kOpAdd, r0, rlObj.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 577 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 578 | storePair(cUnit, r0, rlSrc.lowReg, rlSrc.highReg); |
| 579 | } else { |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 580 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 581 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 582 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 583 | int regPtr; |
| 584 | rlSrc = loadValueWide(cUnit, rlSrc, kAnyReg); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 585 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 586 | regPtr = oatAllocTemp(cUnit); |
| 587 | opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset); |
| 588 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 589 | storePair(cUnit, regPtr, rlSrc.lowReg, rlSrc.highReg); |
| 590 | |
| 591 | oatFreeTemp(cUnit, regPtr); |
| 592 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 593 | } |
| 594 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 595 | STATIC void genConstClass(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 596 | RegLocation rlDest, RegLocation rlSrc) |
| 597 | { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 598 | uint32_t type_idx = mir->dalvikInsn.vB; |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 599 | int mReg = loadCurrMethod(cUnit); |
| 600 | int resReg = oatAllocTemp(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 601 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 602 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 603 | cUnit->dex_cache, |
| 604 | *cUnit->dex_file, |
| 605 | type_idx)) { |
| 606 | // Call out to helper which resolves type and verifies access. |
| 607 | // Resolved type returned in r0. |
| 608 | loadWordDisp(cUnit, rSELF, |
| 609 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 610 | rLR); |
| 611 | genRegCopy(cUnit, r1, mReg); |
| 612 | loadConstant(cUnit, r0, type_idx); |
| 613 | callRuntimeHelper(cUnit, rLR); |
| 614 | RegLocation rlResult = oatGetReturn(cUnit); |
| 615 | storeValue(cUnit, rlDest, rlResult); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 616 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 617 | // We're don't need access checks, load type from dex cache |
| 618 | int32_t dex_cache_offset = Method::DexCacheResolvedTypesOffset().Int32Value(); |
| 619 | loadWordDisp(cUnit, mReg, dex_cache_offset, resReg); |
| 620 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 621 | loadWordDisp(cUnit, resReg, offset_of_type, rlResult.lowReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 622 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, |
| 623 | type_idx) || |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 624 | SLOW_TYPE_PATH) { |
| 625 | // Slow path, at runtime test if the type is null and if so initialize |
| 626 | oatFlushAllRegs(cUnit); |
| 627 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, rlResult.lowReg, 0); |
| 628 | // Resolved, store and hop over following code |
| 629 | storeValue(cUnit, rlDest, rlResult); |
| 630 | ArmLIR* branch2 = genUnconditionalBranch(cUnit,0); |
| 631 | // TUNING: move slow path to end & remove unconditional branch |
| 632 | ArmLIR* target1 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 633 | target1->defMask = ENCODE_ALL; |
| 634 | // Call out to helper, which will return resolved type in r0 |
| 635 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 636 | genRegCopy(cUnit, r1, mReg); |
| 637 | loadConstant(cUnit, r0, type_idx); |
| 638 | callRuntimeHelper(cUnit, rLR); |
| 639 | RegLocation rlResult = oatGetReturn(cUnit); |
| 640 | storeValue(cUnit, rlDest, rlResult); |
| 641 | // Rejoin code paths |
| 642 | ArmLIR* target2 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 643 | target2->defMask = ENCODE_ALL; |
| 644 | branch1->generic.target = (LIR*)target1; |
| 645 | branch2->generic.target = (LIR*)target2; |
| 646 | } else { |
| 647 | // Fast path, we're done - just store result |
| 648 | storeValue(cUnit, rlDest, rlResult); |
| 649 | } |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 650 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 651 | } |
| 652 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 653 | STATIC void genConstString(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 654 | RegLocation rlDest, RegLocation rlSrc) |
| 655 | { |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 656 | /* NOTE: Most strings should be available at compile time */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 657 | uint32_t string_idx = mir->dalvikInsn.vB; |
| 658 | int32_t offset_of_string = Array::DataOffset().Int32Value() + (sizeof(String*) * string_idx); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 659 | if (!cUnit->compiler->CanAssumeStringIsPresentInDexCache(cUnit->dex_cache, string_idx) || |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 660 | SLOW_STRING_PATH) { |
| 661 | // slow path, resolve string if not in dex cache |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 662 | oatFlushAllRegs(cUnit); |
| 663 | oatLockCallTemps(cUnit); // Using explicit registers |
| 664 | loadCurrMethodDirect(cUnit, r2); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 665 | loadWordDisp(cUnit, r2, Method::DexCacheStringsOffset().Int32Value(), r0); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 666 | // Might call out to helper, which will return resolved string in r0 |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 667 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pResolveStringFromCode), rLR); |
| 668 | loadWordDisp(cUnit, r0, offset_of_string, r0); |
| 669 | loadConstant(cUnit, r1, string_idx); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 670 | opRegImm(cUnit, kOpCmp, r0, 0); // Is resolved? |
| 671 | genBarrier(cUnit); |
| 672 | // For testing, always force through helper |
| 673 | if (!EXERCISE_SLOWEST_STRING_PATH) { |
| 674 | genIT(cUnit, kArmCondEq, "T"); |
| 675 | } |
| 676 | genRegCopy(cUnit, r0, r2); // .eq |
| 677 | opReg(cUnit, kOpBlx, rLR); // .eq, helper(Method*, string_idx) |
| 678 | genBarrier(cUnit); |
| 679 | storeValue(cUnit, rlDest, getRetLoc(cUnit)); |
| 680 | } else { |
| 681 | int mReg = loadCurrMethod(cUnit); |
| 682 | int resReg = oatAllocTemp(cUnit); |
| 683 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 684 | loadWordDisp(cUnit, mReg, Method::DexCacheStringsOffset().Int32Value(), resReg); |
| 685 | loadWordDisp(cUnit, resReg, offset_of_string, rlResult.lowReg); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 686 | storeValue(cUnit, rlDest, rlResult); |
| 687 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 688 | } |
| 689 | |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 690 | /* |
| 691 | * Let helper function take care of everything. Will |
| 692 | * call Class::NewInstanceFromCode(type_idx, method); |
| 693 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 694 | STATIC void genNewInstance(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 695 | RegLocation rlDest) |
| 696 | { |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 697 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 698 | uint32_t type_idx = mir->dalvikInsn.vB; |
| 699 | // alloc will always check for resolution, do we also need to verify access because the |
| 700 | // verifier was unable to? |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 701 | if (cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 702 | cUnit->dex_cache, |
| 703 | *cUnit->dex_file, |
| 704 | type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 705 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pAllocObjectFromCode), rLR); |
| 706 | } else { |
| 707 | loadWordDisp(cUnit, rSELF, |
| 708 | OFFSETOF_MEMBER(Thread, pAllocObjectFromCodeWithAccessCheck), rLR); |
| 709 | } |
| 710 | loadCurrMethodDirect(cUnit, r1); // arg1 <= Method* |
| 711 | loadConstant(cUnit, r0, type_idx); // arg0 <- type_idx |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 712 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 713 | RegLocation rlResult = oatGetReturn(cUnit); |
| 714 | storeValue(cUnit, rlDest, rlResult); |
| 715 | } |
| 716 | |
| 717 | void genThrow(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc) |
| 718 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 719 | oatFlushAllRegs(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 720 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pDeliverException), rLR); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 721 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get exception object |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 722 | callRuntimeHelper(cUnit, rLR); // art_deliver_exception(exception); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 723 | } |
| 724 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 725 | STATIC void genInstanceof(CompilationUnit* cUnit, MIR* mir, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 726 | RegLocation rlSrc) |
| 727 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 728 | oatFlushAllRegs(cUnit); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 729 | // May generate a call - use explicit registers |
| 730 | oatLockCallTemps(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 731 | uint32_t type_idx = mir->dalvikInsn.vC; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 732 | loadCurrMethodDirect(cUnit, r1); // r1 <= current Method* |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 733 | int classReg = r2; // r2 will hold the Class* |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 734 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 735 | cUnit->dex_cache, |
| 736 | *cUnit->dex_file, |
| 737 | type_idx)) { |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 738 | // Check we have access to type_idx and if not throw IllegalAccessError, |
| 739 | // returns Class* in r0 |
| 740 | loadWordDisp(cUnit, rSELF, |
| 741 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 742 | rLR); |
| 743 | loadConstant(cUnit, r0, type_idx); |
| 744 | callRuntimeHelper(cUnit, rLR); // InitializeTypeAndVerifyAccess(idx, method) |
| 745 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 6a99678 | 2011-10-31 17:06:39 -0700 | [diff] [blame] | 746 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 747 | } else { |
| 748 | // Load dex cache entry into classReg (r2) |
Ian Rogers | 6a99678 | 2011-10-31 17:06:39 -0700 | [diff] [blame] | 749 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 750 | loadWordDisp(cUnit, r1, Method::DexCacheResolvedTypesOffset().Int32Value(), classReg); |
| 751 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 752 | loadWordDisp(cUnit, classReg, offset_of_type, classReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 753 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 754 | // Need to test presence of type in dex cache at runtime |
| 755 | ArmLIR* hopBranch = genCmpImmBranch(cUnit, kArmCondNe, classReg, 0); |
| 756 | // Not resolved |
| 757 | // Call out to helper, which will return resolved type in r0 |
| 758 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 759 | loadConstant(cUnit, r0, type_idx); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 760 | callRuntimeHelper(cUnit, rLR); // InitializeTypeFromCode(idx, method) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 761 | genRegCopy(cUnit, r2, r0); // Align usage with fast path |
| 762 | loadValueDirectFixed(cUnit, rlSrc, r0); /* reload Ref */ |
| 763 | // Rejoin code paths |
| 764 | ArmLIR* hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 765 | hopTarget->defMask = ENCODE_ALL; |
| 766 | hopBranch->generic.target = (LIR*)hopTarget; |
| 767 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 768 | } |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 769 | /* r0 is ref, r2 is class. If ref==null, use directly as bool result */ |
| 770 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, r0, 0); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 771 | /* load object->clazz */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 772 | DCHECK_EQ(Object::ClassOffset().Int32Value(), 0); |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 773 | loadWordDisp(cUnit, r0, Object::ClassOffset().Int32Value(), r1); |
| 774 | /* r0 is ref, r1 is ref->clazz, r2 is class */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 775 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInstanceofNonTrivialFromCode), rLR); |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 776 | opRegReg(cUnit, kOpCmp, r1, r2); // Same? |
| 777 | genBarrier(cUnit); |
| 778 | genIT(cUnit, kArmCondEq, "EE"); // if-convert the test |
| 779 | loadConstant(cUnit, r0, 1); // .eq case - load true |
| 780 | genRegCopy(cUnit, r0, r2); // .ne case - arg0 <= class |
| 781 | opReg(cUnit, kOpBlx, rLR); // .ne case: helper(class, ref->class) |
| 782 | genBarrier(cUnit); |
| 783 | oatClobberCalleeSave(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 784 | /* branch target here */ |
| 785 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 786 | target->defMask = ENCODE_ALL; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 787 | RegLocation rlResult = oatGetReturn(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 788 | storeValue(cUnit, rlDest, rlResult); |
| 789 | branch1->generic.target = (LIR*)target; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 790 | } |
| 791 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 792 | STATIC void genCheckCast(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 793 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 794 | oatFlushAllRegs(cUnit); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 795 | // May generate a call - use explicit registers |
| 796 | oatLockCallTemps(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 797 | uint32_t type_idx = mir->dalvikInsn.vB; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 798 | loadCurrMethodDirect(cUnit, r1); // r1 <= current Method* |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 799 | int classReg = r2; // r2 will hold the Class* |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 800 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 801 | cUnit->dex_cache, |
| 802 | *cUnit->dex_file, |
| 803 | type_idx)) { |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 804 | // Check we have access to type_idx and if not throw IllegalAccessError, |
| 805 | // returns Class* in r0 |
| 806 | loadWordDisp(cUnit, rSELF, |
| 807 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 808 | rLR); |
| 809 | loadConstant(cUnit, r0, type_idx); |
| 810 | callRuntimeHelper(cUnit, rLR); // InitializeTypeAndVerifyAccess(idx, method) |
| 811 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 812 | } else { |
| 813 | // Load dex cache entry into classReg (r2) |
| 814 | loadWordDisp(cUnit, r1, Method::DexCacheResolvedTypesOffset().Int32Value(), classReg); |
| 815 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 816 | loadWordDisp(cUnit, classReg, offset_of_type, classReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 817 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 818 | // Need to test presence of type in dex cache at runtime |
| 819 | ArmLIR* hopBranch = genCmpImmBranch(cUnit, kArmCondNe, classReg, 0); |
| 820 | // Not resolved |
| 821 | // Call out to helper, which will return resolved type in r0 |
| 822 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 823 | loadConstant(cUnit, r0, type_idx); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 824 | callRuntimeHelper(cUnit, rLR); // InitializeTypeFromCode(idx, method) |
| 825 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 826 | // Rejoin code paths |
| 827 | ArmLIR* hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 828 | hopTarget->defMask = ENCODE_ALL; |
| 829 | hopBranch->generic.target = (LIR*)hopTarget; |
| 830 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 831 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 832 | // At this point, classReg (r2) has class |
| 833 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 834 | /* Null is OK - continue */ |
| 835 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, r0, 0); |
| 836 | /* load object->clazz */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 837 | DCHECK_EQ(Object::ClassOffset().Int32Value(), 0); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 838 | loadWordDisp(cUnit, r0, Object::ClassOffset().Int32Value(), r1); |
| 839 | /* r1 now contains object->clazz */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 840 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pCheckCastFromCode), rLR); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 841 | opRegReg(cUnit, kOpCmp, r1, classReg); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 842 | ArmLIR* branch2 = opCondBranch(cUnit, kArmCondEq); /* If equal, trivial yes */ |
| 843 | genRegCopy(cUnit, r0, r1); |
| 844 | genRegCopy(cUnit, r1, r2); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 845 | callRuntimeHelper(cUnit, rLR); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 846 | /* branch target here */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 847 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 848 | target->defMask = ENCODE_ALL; |
| 849 | branch1->generic.target = (LIR*)target; |
| 850 | branch2->generic.target = (LIR*)target; |
| 851 | } |
| 852 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 853 | STATIC void genNegFloat(CompilationUnit* cUnit, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 854 | RegLocation rlSrc) |
| 855 | { |
| 856 | RegLocation rlResult; |
| 857 | rlSrc = loadValue(cUnit, rlSrc, kFPReg); |
| 858 | rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true); |
| 859 | newLIR2(cUnit, kThumb2Vnegs, rlResult.lowReg, rlSrc.lowReg); |
| 860 | storeValue(cUnit, rlDest, rlResult); |
| 861 | } |
| 862 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 863 | STATIC void genNegDouble(CompilationUnit* cUnit, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 864 | RegLocation rlSrc) |
| 865 | { |
| 866 | RegLocation rlResult; |
| 867 | rlSrc = loadValueWide(cUnit, rlSrc, kFPReg); |
| 868 | rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true); |
| 869 | newLIR2(cUnit, kThumb2Vnegd, S2D(rlResult.lowReg, rlResult.highReg), |
| 870 | S2D(rlSrc.lowReg, rlSrc.highReg)); |
| 871 | storeValueWide(cUnit, rlDest, rlResult); |
| 872 | } |
| 873 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 874 | STATIC void freeRegLocTemps(CompilationUnit* cUnit, RegLocation rlKeep, |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 875 | RegLocation rlFree) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 876 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 877 | if ((rlFree.lowReg != rlKeep.lowReg) && (rlFree.lowReg != rlKeep.highReg) && |
| 878 | (rlFree.highReg != rlKeep.lowReg) && (rlFree.highReg != rlKeep.highReg)) { |
| 879 | // No overlap, free both |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 880 | oatFreeTemp(cUnit, rlFree.lowReg); |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 881 | oatFreeTemp(cUnit, rlFree.highReg); |
| 882 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 883 | } |
| 884 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 885 | STATIC void genLong3Addr(CompilationUnit* cUnit, MIR* mir, OpKind firstOp, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 886 | OpKind secondOp, RegLocation rlDest, |
| 887 | RegLocation rlSrc1, RegLocation rlSrc2) |
| 888 | { |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 889 | /* |
| 890 | * NOTE: This is the one place in the code in which we might have |
| 891 | * as many as six live temporary registers. There are 5 in the normal |
| 892 | * set for Arm. Until we have spill capabilities, temporarily add |
| 893 | * lr to the temp set. It is safe to do this locally, but note that |
| 894 | * lr is used explicitly elsewhere in the code generator and cannot |
| 895 | * normally be used as a general temp register. |
| 896 | */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 897 | RegLocation rlResult; |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 898 | oatMarkTemp(cUnit, rLR); // Add lr to the temp pool |
| 899 | oatFreeTemp(cUnit, rLR); // and make it available |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 900 | rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg); |
| 901 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 902 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 903 | // The longs may overlap - use intermediate temp if so |
| 904 | if (rlResult.lowReg == rlSrc1.highReg) { |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 905 | int tReg = oatAllocTemp(cUnit); |
| 906 | genRegCopy(cUnit, tReg, rlSrc1.highReg); |
| 907 | opRegRegReg(cUnit, firstOp, rlResult.lowReg, rlSrc1.lowReg, |
| 908 | rlSrc2.lowReg); |
| 909 | opRegRegReg(cUnit, secondOp, rlResult.highReg, tReg, |
| 910 | rlSrc2.highReg); |
| 911 | oatFreeTemp(cUnit, tReg); |
| 912 | } else { |
| 913 | opRegRegReg(cUnit, firstOp, rlResult.lowReg, rlSrc1.lowReg, |
| 914 | rlSrc2.lowReg); |
| 915 | opRegRegReg(cUnit, secondOp, rlResult.highReg, rlSrc1.highReg, |
| 916 | rlSrc2.highReg); |
| 917 | } |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 918 | /* |
| 919 | * NOTE: If rlDest refers to a frame variable in a large frame, the |
| 920 | * following storeValueWide might need to allocate a temp register. |
| 921 | * To further work around the lack of a spill capability, explicitly |
| 922 | * free any temps from rlSrc1 & rlSrc2 that aren't still live in rlResult. |
| 923 | * Remove when spill is functional. |
| 924 | */ |
| 925 | freeRegLocTemps(cUnit, rlResult, rlSrc1); |
| 926 | freeRegLocTemps(cUnit, rlResult, rlSrc2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 927 | storeValueWide(cUnit, rlDest, rlResult); |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 928 | oatClobber(cUnit, rLR); |
| 929 | oatUnmarkTemp(cUnit, rLR); // Remove lr from the temp pool |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 930 | } |
| 931 | |
| 932 | void oatInitializeRegAlloc(CompilationUnit* cUnit) |
| 933 | { |
| 934 | int numRegs = sizeof(coreRegs)/sizeof(*coreRegs); |
| 935 | int numReserved = sizeof(reservedRegs)/sizeof(*reservedRegs); |
| 936 | int numTemps = sizeof(coreTemps)/sizeof(*coreTemps); |
| 937 | int numFPRegs = sizeof(fpRegs)/sizeof(*fpRegs); |
| 938 | int numFPTemps = sizeof(fpTemps)/sizeof(*fpTemps); |
| 939 | RegisterPool *pool = (RegisterPool *)oatNew(sizeof(*pool), true); |
| 940 | cUnit->regPool = pool; |
| 941 | pool->numCoreRegs = numRegs; |
| 942 | pool->coreRegs = (RegisterInfo *) |
| 943 | oatNew(numRegs * sizeof(*cUnit->regPool->coreRegs), true); |
| 944 | pool->numFPRegs = numFPRegs; |
| 945 | pool->FPRegs = (RegisterInfo *) |
| 946 | oatNew(numFPRegs * sizeof(*cUnit->regPool->FPRegs), true); |
| 947 | oatInitPool(pool->coreRegs, coreRegs, pool->numCoreRegs); |
| 948 | oatInitPool(pool->FPRegs, fpRegs, pool->numFPRegs); |
| 949 | // Keep special registers from being allocated |
| 950 | for (int i = 0; i < numReserved; i++) { |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 951 | if (NO_SUSPEND && (reservedRegs[i] == rSUSPEND)) { |
| 952 | //To measure cost of suspend check |
| 953 | continue; |
| 954 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 955 | oatMarkInUse(cUnit, reservedRegs[i]); |
| 956 | } |
| 957 | // Mark temp regs - all others not in use can be used for promotion |
| 958 | for (int i = 0; i < numTemps; i++) { |
| 959 | oatMarkTemp(cUnit, coreTemps[i]); |
| 960 | } |
| 961 | for (int i = 0; i < numFPTemps; i++) { |
| 962 | oatMarkTemp(cUnit, fpTemps[i]); |
| 963 | } |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 964 | // Construct the alias map. |
| 965 | cUnit->phiAliasMap = (int*)oatNew(cUnit->numSSARegs * |
| 966 | sizeof(cUnit->phiAliasMap[0]), false); |
| 967 | for (int i = 0; i < cUnit->numSSARegs; i++) { |
| 968 | cUnit->phiAliasMap[i] = i; |
| 969 | } |
| 970 | for (MIR* phi = cUnit->phiList; phi; phi = phi->meta.phiNext) { |
| 971 | int defReg = phi->ssaRep->defs[0]; |
| 972 | for (int i = 0; i < phi->ssaRep->numUses; i++) { |
| 973 | for (int j = 0; j < cUnit->numSSARegs; j++) { |
| 974 | if (cUnit->phiAliasMap[j] == phi->ssaRep->uses[i]) { |
| 975 | cUnit->phiAliasMap[j] = defReg; |
| 976 | } |
| 977 | } |
| 978 | } |
| 979 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | /* |
| 983 | * Handle simple case (thin lock) inline. If it's complicated, bail |
| 984 | * out to the heavyweight lock/unlock routines. We'll use dedicated |
| 985 | * registers here in order to be in the right position in case we |
| 986 | * to bail to dvm[Lock/Unlock]Object(self, object) |
| 987 | * |
| 988 | * r0 -> self pointer [arg0 for dvm[Lock/Unlock]Object |
| 989 | * r1 -> object [arg1 for dvm[Lock/Unlock]Object |
| 990 | * r2 -> intial contents of object->lock, later result of strex |
| 991 | * r3 -> self->threadId |
| 992 | * r12 -> allow to be used by utilities as general temp |
| 993 | * |
| 994 | * The result of the strex is 0 if we acquire the lock. |
| 995 | * |
| 996 | * See comments in Sync.c for the layout of the lock word. |
| 997 | * Of particular interest to this code is the test for the |
| 998 | * simple case - which we handle inline. For monitor enter, the |
| 999 | * simple case is thin lock, held by no-one. For monitor exit, |
| 1000 | * the simple case is thin lock, held by the unlocking thread with |
| 1001 | * a recurse count of 0. |
| 1002 | * |
| 1003 | * A minor complication is that there is a field in the lock word |
| 1004 | * unrelated to locking: the hash state. This field must be ignored, but |
| 1005 | * preserved. |
| 1006 | * |
| 1007 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1008 | STATIC void genMonitorEnter(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1009 | RegLocation rlSrc) |
| 1010 | { |
| 1011 | ArmLIR* target; |
| 1012 | ArmLIR* hopTarget; |
| 1013 | ArmLIR* branch; |
| 1014 | ArmLIR* hopBranch; |
| 1015 | |
| 1016 | oatFlushAllRegs(cUnit); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1017 | DCHECK_EQ(LW_SHAPE_THIN, 0); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1018 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get obj |
buzbee | 2e748f3 | 2011-08-29 21:02:19 -0700 | [diff] [blame] | 1019 | oatLockCallTemps(cUnit); // Prepare for explicit register usage |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1020 | genNullCheck(cUnit, rlSrc.sRegLow, r0, mir); |
| 1021 | loadWordDisp(cUnit, rSELF, Thread::ThinLockIdOffset().Int32Value(), r2); |
| 1022 | newLIR3(cUnit, kThumb2Ldrex, r1, r0, |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1023 | Object::MonitorOffset().Int32Value() >> 2); // Get object->lock |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1024 | // Align owner |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1025 | opRegImm(cUnit, kOpLsl, r2, LW_LOCK_OWNER_SHIFT); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1026 | // Is lock unheld on lock or held by us (==threadId) on unlock? |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1027 | newLIR4(cUnit, kThumb2Bfi, r2, r1, 0, LW_LOCK_OWNER_SHIFT - 1); |
| 1028 | newLIR3(cUnit, kThumb2Bfc, r1, LW_HASH_STATE_SHIFT, LW_LOCK_OWNER_SHIFT - 1); |
| 1029 | hopBranch = newLIR2(cUnit, kThumb2Cbnz, r1, 0); |
| 1030 | newLIR4(cUnit, kThumb2Strex, r1, r2, r0, |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1031 | Object::MonitorOffset().Int32Value() >> 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1032 | oatGenMemBarrier(cUnit, kSY); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1033 | branch = newLIR2(cUnit, kThumb2Cbz, r1, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1034 | |
| 1035 | hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1036 | hopTarget->defMask = ENCODE_ALL; |
| 1037 | hopBranch->generic.target = (LIR*)hopTarget; |
| 1038 | |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1039 | // Go expensive route - artLockObjectFromCode(self, obj); |
| 1040 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pLockObjectFromCode), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1041 | rLR); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1042 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1043 | |
| 1044 | // Resume here |
| 1045 | target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1046 | target->defMask = ENCODE_ALL; |
| 1047 | branch->generic.target = (LIR*)target; |
| 1048 | } |
| 1049 | |
| 1050 | /* |
| 1051 | * For monitor unlock, we don't have to use ldrex/strex. Once |
| 1052 | * we've determined that the lock is thin and that we own it with |
| 1053 | * a zero recursion count, it's safe to punch it back to the |
| 1054 | * initial, unlock thin state with a store word. |
| 1055 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1056 | STATIC void genMonitorExit(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1057 | RegLocation rlSrc) |
| 1058 | { |
| 1059 | ArmLIR* target; |
| 1060 | ArmLIR* branch; |
| 1061 | ArmLIR* hopTarget; |
| 1062 | ArmLIR* hopBranch; |
| 1063 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1064 | DCHECK_EQ(LW_SHAPE_THIN, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1065 | oatFlushAllRegs(cUnit); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1066 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get obj |
buzbee | 2e748f3 | 2011-08-29 21:02:19 -0700 | [diff] [blame] | 1067 | oatLockCallTemps(cUnit); // Prepare for explicit register usage |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1068 | genNullCheck(cUnit, rlSrc.sRegLow, r0, mir); |
| 1069 | loadWordDisp(cUnit, r0, Object::MonitorOffset().Int32Value(), r1); // Get lock |
| 1070 | loadWordDisp(cUnit, rSELF, Thread::ThinLockIdOffset().Int32Value(), r2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1071 | // Is lock unheld on lock or held by us (==threadId) on unlock? |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1072 | opRegRegImm(cUnit, kOpAnd, r3, r1, (LW_HASH_STATE_MASK << LW_HASH_STATE_SHIFT)); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1073 | // Align owner |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1074 | opRegImm(cUnit, kOpLsl, r2, LW_LOCK_OWNER_SHIFT); |
| 1075 | newLIR3(cUnit, kThumb2Bfc, r1, LW_HASH_STATE_SHIFT, LW_LOCK_OWNER_SHIFT - 1); |
| 1076 | opRegReg(cUnit, kOpSub, r1, r2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1077 | hopBranch = opCondBranch(cUnit, kArmCondNe); |
| 1078 | oatGenMemBarrier(cUnit, kSY); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1079 | storeWordDisp(cUnit, r0, Object::MonitorOffset().Int32Value(), r3); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1080 | branch = opNone(cUnit, kOpUncondBr); |
| 1081 | |
| 1082 | hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1083 | hopTarget->defMask = ENCODE_ALL; |
| 1084 | hopBranch->generic.target = (LIR*)hopTarget; |
| 1085 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1086 | // Go expensive route - UnlockObjectFromCode(obj); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1087 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pUnlockObjectFromCode), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1088 | rLR); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1089 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1090 | |
| 1091 | // Resume here |
| 1092 | target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1093 | target->defMask = ENCODE_ALL; |
| 1094 | branch->generic.target = (LIR*)target; |
| 1095 | } |
| 1096 | |
| 1097 | /* |
| 1098 | * 64-bit 3way compare function. |
| 1099 | * mov rX, #-1 |
| 1100 | * cmp op1hi, op2hi |
| 1101 | * blt done |
| 1102 | * bgt flip |
| 1103 | * sub rX, op1lo, op2lo (treat as unsigned) |
| 1104 | * beq done |
| 1105 | * ite hi |
| 1106 | * mov(hi) rX, #-1 |
| 1107 | * mov(!hi) rX, #1 |
| 1108 | * flip: |
| 1109 | * neg rX |
| 1110 | * done: |
| 1111 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1112 | STATIC void genCmpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1113 | RegLocation rlDest, RegLocation rlSrc1, |
| 1114 | RegLocation rlSrc2) |
| 1115 | { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1116 | ArmLIR* target1; |
| 1117 | ArmLIR* target2; |
| 1118 | rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg); |
| 1119 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1120 | int tReg = oatAllocTemp(cUnit); |
| 1121 | loadConstant(cUnit, tReg, -1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1122 | opRegReg(cUnit, kOpCmp, rlSrc1.highReg, rlSrc2.highReg); |
| 1123 | ArmLIR* branch1 = opCondBranch(cUnit, kArmCondLt); |
| 1124 | ArmLIR* branch2 = opCondBranch(cUnit, kArmCondGt); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1125 | opRegRegReg(cUnit, kOpSub, tReg, rlSrc1.lowReg, rlSrc2.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1126 | ArmLIR* branch3 = opCondBranch(cUnit, kArmCondEq); |
| 1127 | |
| 1128 | genIT(cUnit, kArmCondHi, "E"); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1129 | newLIR2(cUnit, kThumb2MovImmShift, tReg, modifiedImmediate(-1)); |
| 1130 | loadConstant(cUnit, tReg, 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1131 | genBarrier(cUnit); |
| 1132 | |
| 1133 | target2 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1134 | target2->defMask = -1; |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1135 | opRegReg(cUnit, kOpNeg, tReg, tReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1136 | |
| 1137 | target1 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1138 | target1->defMask = -1; |
| 1139 | |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1140 | RegLocation rlTemp = LOC_C_RETURN; // Just using as template, will change |
| 1141 | rlTemp.lowReg = tReg; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1142 | storeValue(cUnit, rlDest, rlTemp); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1143 | oatFreeTemp(cUnit, tReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1144 | |
| 1145 | branch1->generic.target = (LIR*)target1; |
| 1146 | branch2->generic.target = (LIR*)target2; |
| 1147 | branch3->generic.target = branch1->generic.target; |
| 1148 | } |
| 1149 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1150 | STATIC void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1151 | RegLocation rlSrc, RegLocation rlResult, int lit, |
| 1152 | int firstBit, int secondBit) |
| 1153 | { |
| 1154 | opRegRegRegShift(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, rlSrc.lowReg, |
| 1155 | encodeShift(kArmLsl, secondBit - firstBit)); |
| 1156 | if (firstBit != 0) { |
| 1157 | opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit); |
| 1158 | } |
| 1159 | } |
| 1160 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1161 | STATIC bool genConversionCall(CompilationUnit* cUnit, MIR* mir, int funcOffset, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1162 | int srcSize, int tgtSize) |
| 1163 | { |
| 1164 | /* |
| 1165 | * Don't optimize the register usage since it calls out to support |
| 1166 | * functions |
| 1167 | */ |
| 1168 | RegLocation rlSrc; |
| 1169 | RegLocation rlDest; |
| 1170 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1171 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1172 | if (srcSize == 1) { |
| 1173 | rlSrc = oatGetSrc(cUnit, mir, 0); |
| 1174 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 1175 | } else { |
| 1176 | rlSrc = oatGetSrcWide(cUnit, mir, 0, 1); |
| 1177 | loadValueDirectWideFixed(cUnit, rlSrc, r0, r1); |
| 1178 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1179 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1180 | if (tgtSize == 1) { |
| 1181 | RegLocation rlResult; |
| 1182 | rlDest = oatGetDest(cUnit, mir, 0); |
| 1183 | rlResult = oatGetReturn(cUnit); |
| 1184 | storeValue(cUnit, rlDest, rlResult); |
| 1185 | } else { |
| 1186 | RegLocation rlResult; |
| 1187 | rlDest = oatGetDestWide(cUnit, mir, 0, 1); |
| 1188 | rlResult = oatGetReturnWide(cUnit); |
| 1189 | storeValueWide(cUnit, rlDest, rlResult); |
| 1190 | } |
| 1191 | return false; |
| 1192 | } |
| 1193 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1194 | STATIC bool genArithOpFloatPortable(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1195 | RegLocation rlDest, RegLocation rlSrc1, |
| 1196 | RegLocation rlSrc2) |
| 1197 | { |
| 1198 | RegLocation rlResult; |
| 1199 | int funcOffset; |
| 1200 | |
| 1201 | switch (mir->dalvikInsn.opcode) { |
| 1202 | case OP_ADD_FLOAT_2ADDR: |
| 1203 | case OP_ADD_FLOAT: |
| 1204 | funcOffset = OFFSETOF_MEMBER(Thread, pFadd); |
| 1205 | break; |
| 1206 | case OP_SUB_FLOAT_2ADDR: |
| 1207 | case OP_SUB_FLOAT: |
| 1208 | funcOffset = OFFSETOF_MEMBER(Thread, pFsub); |
| 1209 | break; |
| 1210 | case OP_DIV_FLOAT_2ADDR: |
| 1211 | case OP_DIV_FLOAT: |
| 1212 | funcOffset = OFFSETOF_MEMBER(Thread, pFdiv); |
| 1213 | break; |
| 1214 | case OP_MUL_FLOAT_2ADDR: |
| 1215 | case OP_MUL_FLOAT: |
| 1216 | funcOffset = OFFSETOF_MEMBER(Thread, pFmul); |
| 1217 | break; |
| 1218 | case OP_REM_FLOAT_2ADDR: |
| 1219 | case OP_REM_FLOAT: |
| 1220 | funcOffset = OFFSETOF_MEMBER(Thread, pFmodf); |
| 1221 | break; |
| 1222 | case OP_NEG_FLOAT: { |
| 1223 | genNegFloat(cUnit, rlDest, rlSrc1); |
| 1224 | return false; |
| 1225 | } |
| 1226 | default: |
| 1227 | return true; |
| 1228 | } |
| 1229 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1230 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1231 | loadValueDirectFixed(cUnit, rlSrc1, r0); |
| 1232 | loadValueDirectFixed(cUnit, rlSrc2, r1); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1233 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1234 | rlResult = oatGetReturn(cUnit); |
| 1235 | storeValue(cUnit, rlDest, rlResult); |
| 1236 | return false; |
| 1237 | } |
| 1238 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1239 | STATIC bool genArithOpDoublePortable(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1240 | RegLocation rlDest, RegLocation rlSrc1, |
| 1241 | RegLocation rlSrc2) |
| 1242 | { |
| 1243 | RegLocation rlResult; |
| 1244 | int funcOffset; |
| 1245 | |
| 1246 | switch (mir->dalvikInsn.opcode) { |
| 1247 | case OP_ADD_DOUBLE_2ADDR: |
| 1248 | case OP_ADD_DOUBLE: |
| 1249 | funcOffset = OFFSETOF_MEMBER(Thread, pDadd); |
| 1250 | break; |
| 1251 | case OP_SUB_DOUBLE_2ADDR: |
| 1252 | case OP_SUB_DOUBLE: |
| 1253 | funcOffset = OFFSETOF_MEMBER(Thread, pDsub); |
| 1254 | break; |
| 1255 | case OP_DIV_DOUBLE_2ADDR: |
| 1256 | case OP_DIV_DOUBLE: |
| 1257 | funcOffset = OFFSETOF_MEMBER(Thread, pDdiv); |
| 1258 | break; |
| 1259 | case OP_MUL_DOUBLE_2ADDR: |
| 1260 | case OP_MUL_DOUBLE: |
| 1261 | funcOffset = OFFSETOF_MEMBER(Thread, pDmul); |
| 1262 | break; |
| 1263 | case OP_REM_DOUBLE_2ADDR: |
| 1264 | case OP_REM_DOUBLE: |
| 1265 | funcOffset = OFFSETOF_MEMBER(Thread, pFmod); |
| 1266 | break; |
| 1267 | case OP_NEG_DOUBLE: { |
| 1268 | genNegDouble(cUnit, rlDest, rlSrc1); |
| 1269 | return false; |
| 1270 | } |
| 1271 | default: |
| 1272 | return true; |
| 1273 | } |
| 1274 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1275 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1276 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1277 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1278 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1279 | rlResult = oatGetReturnWide(cUnit); |
| 1280 | storeValueWide(cUnit, rlDest, rlResult); |
| 1281 | return false; |
| 1282 | } |
| 1283 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1284 | STATIC bool genConversionPortable(CompilationUnit* cUnit, MIR* mir) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1285 | { |
| 1286 | Opcode opcode = mir->dalvikInsn.opcode; |
| 1287 | |
| 1288 | switch (opcode) { |
| 1289 | case OP_INT_TO_FLOAT: |
| 1290 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pI2f), |
| 1291 | 1, 1); |
| 1292 | case OP_FLOAT_TO_INT: |
| 1293 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pF2iz), |
| 1294 | 1, 1); |
| 1295 | case OP_DOUBLE_TO_FLOAT: |
| 1296 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pD2f), |
| 1297 | 2, 1); |
| 1298 | case OP_FLOAT_TO_DOUBLE: |
| 1299 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pF2d), |
| 1300 | 1, 2); |
| 1301 | case OP_INT_TO_DOUBLE: |
| 1302 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pI2d), |
| 1303 | 1, 2); |
| 1304 | case OP_DOUBLE_TO_INT: |
| 1305 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pD2iz), |
| 1306 | 2, 1); |
| 1307 | case OP_FLOAT_TO_LONG: |
| 1308 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1309 | pF2l), 1, 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1310 | case OP_LONG_TO_FLOAT: |
| 1311 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pL2f), |
| 1312 | 2, 1); |
| 1313 | case OP_DOUBLE_TO_LONG: |
| 1314 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1315 | pD2l), 2, 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1316 | case OP_LONG_TO_DOUBLE: |
| 1317 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pL2d), |
| 1318 | 2, 2); |
| 1319 | default: |
| 1320 | return true; |
| 1321 | } |
| 1322 | return false; |
| 1323 | } |
| 1324 | |
| 1325 | /* Generate conditional branch instructions */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1326 | STATIC ArmLIR* genConditionalBranch(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1327 | ArmConditionCode cond, |
| 1328 | ArmLIR* target) |
| 1329 | { |
| 1330 | ArmLIR* branch = opCondBranch(cUnit, cond); |
| 1331 | branch->generic.target = (LIR*) target; |
| 1332 | return branch; |
| 1333 | } |
| 1334 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1335 | /* |
| 1336 | * Generate array store |
| 1337 | * |
| 1338 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1339 | STATIC void genArrayObjPut(CompilationUnit* cUnit, MIR* mir, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1340 | RegLocation rlArray, RegLocation rlIndex, |
| 1341 | RegLocation rlSrc, int scale) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1342 | { |
| 1343 | RegisterClass regClass = oatRegClassBySize(kWord); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1344 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1345 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1346 | |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1347 | oatFlushAllRegs(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1348 | /* Make sure it's a legal object Put. Use direct regs at first */ |
| 1349 | loadValueDirectFixed(cUnit, rlArray, r1); |
| 1350 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 1351 | |
| 1352 | /* null array object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1353 | genNullCheck(cUnit, rlArray.sRegLow, r1, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1354 | loadWordDisp(cUnit, rSELF, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1355 | OFFSETOF_MEMBER(Thread, pCanPutArrayElementFromCode), rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1356 | /* Get the array's clazz */ |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1357 | loadWordDisp(cUnit, r1, Object::ClassOffset().Int32Value(), r1); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1358 | callRuntimeHelper(cUnit, rLR); |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1359 | oatFreeTemp(cUnit, r0); |
| 1360 | oatFreeTemp(cUnit, r1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1361 | |
| 1362 | // Now, redo loadValues in case they didn't survive the call |
| 1363 | |
| 1364 | int regPtr; |
| 1365 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1366 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1367 | |
| 1368 | if (oatIsTemp(cUnit, rlArray.lowReg)) { |
| 1369 | oatClobber(cUnit, rlArray.lowReg); |
| 1370 | regPtr = rlArray.lowReg; |
| 1371 | } else { |
| 1372 | regPtr = oatAllocTemp(cUnit); |
| 1373 | genRegCopy(cUnit, regPtr, rlArray.lowReg); |
| 1374 | } |
| 1375 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1376 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1377 | int regLen = oatAllocTemp(cUnit); |
| 1378 | //NOTE: max live temps(4) here. |
| 1379 | /* Get len */ |
| 1380 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1381 | /* regPtr -> array data */ |
| 1382 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1383 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1384 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1385 | oatFreeTemp(cUnit, regLen); |
| 1386 | } else { |
| 1387 | /* regPtr -> array data */ |
| 1388 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
| 1389 | } |
| 1390 | /* at this point, regPtr points to array, 2 live temps */ |
| 1391 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
| 1392 | storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg, |
| 1393 | scale, kWord); |
| 1394 | } |
| 1395 | |
| 1396 | /* |
| 1397 | * Generate array load |
| 1398 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1399 | STATIC void genArrayGet(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1400 | RegLocation rlArray, RegLocation rlIndex, |
| 1401 | RegLocation rlDest, int scale) |
| 1402 | { |
| 1403 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1404 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1405 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1406 | RegLocation rlResult; |
| 1407 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1408 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1409 | int regPtr; |
| 1410 | |
| 1411 | /* null object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1412 | genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1413 | |
| 1414 | regPtr = oatAllocTemp(cUnit); |
| 1415 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1416 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1417 | int regLen = oatAllocTemp(cUnit); |
| 1418 | /* Get len */ |
| 1419 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1420 | /* regPtr -> array data */ |
| 1421 | opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1422 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1423 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1424 | oatFreeTemp(cUnit, regLen); |
| 1425 | } else { |
| 1426 | /* regPtr -> array data */ |
| 1427 | opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset); |
| 1428 | } |
buzbee | e9a72f6 | 2011-09-04 17:59:07 -0700 | [diff] [blame] | 1429 | oatFreeTemp(cUnit, rlArray.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1430 | if ((size == kLong) || (size == kDouble)) { |
| 1431 | if (scale) { |
| 1432 | int rNewIndex = oatAllocTemp(cUnit); |
| 1433 | opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale); |
| 1434 | opRegReg(cUnit, kOpAdd, regPtr, rNewIndex); |
| 1435 | oatFreeTemp(cUnit, rNewIndex); |
| 1436 | } else { |
| 1437 | opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg); |
| 1438 | } |
buzbee | e9a72f6 | 2011-09-04 17:59:07 -0700 | [diff] [blame] | 1439 | oatFreeTemp(cUnit, rlIndex.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1440 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
| 1441 | |
| 1442 | loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg); |
| 1443 | |
| 1444 | oatFreeTemp(cUnit, regPtr); |
| 1445 | storeValueWide(cUnit, rlDest, rlResult); |
| 1446 | } else { |
| 1447 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
| 1448 | |
| 1449 | loadBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlResult.lowReg, |
| 1450 | scale, size); |
| 1451 | |
| 1452 | oatFreeTemp(cUnit, regPtr); |
| 1453 | storeValue(cUnit, rlDest, rlResult); |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | /* |
| 1458 | * Generate array store |
| 1459 | * |
| 1460 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1461 | STATIC void genArrayPut(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1462 | RegLocation rlArray, RegLocation rlIndex, |
| 1463 | RegLocation rlSrc, int scale) |
| 1464 | { |
| 1465 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1466 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1467 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1468 | |
| 1469 | int regPtr; |
| 1470 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1471 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1472 | |
| 1473 | if (oatIsTemp(cUnit, rlArray.lowReg)) { |
| 1474 | oatClobber(cUnit, rlArray.lowReg); |
| 1475 | regPtr = rlArray.lowReg; |
| 1476 | } else { |
| 1477 | regPtr = oatAllocTemp(cUnit); |
| 1478 | genRegCopy(cUnit, regPtr, rlArray.lowReg); |
| 1479 | } |
| 1480 | |
| 1481 | /* null object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1482 | genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1483 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1484 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1485 | int regLen = oatAllocTemp(cUnit); |
| 1486 | //NOTE: max live temps(4) here. |
| 1487 | /* Get len */ |
| 1488 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1489 | /* regPtr -> array data */ |
| 1490 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1491 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1492 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1493 | oatFreeTemp(cUnit, regLen); |
| 1494 | } else { |
| 1495 | /* regPtr -> array data */ |
| 1496 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
| 1497 | } |
| 1498 | /* at this point, regPtr points to array, 2 live temps */ |
| 1499 | if ((size == kLong) || (size == kDouble)) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1500 | //TUNING: specific wide routine that can handle fp regs |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1501 | if (scale) { |
| 1502 | int rNewIndex = oatAllocTemp(cUnit); |
| 1503 | opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale); |
| 1504 | opRegReg(cUnit, kOpAdd, regPtr, rNewIndex); |
| 1505 | oatFreeTemp(cUnit, rNewIndex); |
| 1506 | } else { |
| 1507 | opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg); |
| 1508 | } |
| 1509 | rlSrc = loadValueWide(cUnit, rlSrc, regClass); |
| 1510 | |
| 1511 | storePair(cUnit, regPtr, rlSrc.lowReg, rlSrc.highReg); |
| 1512 | |
| 1513 | oatFreeTemp(cUnit, regPtr); |
| 1514 | } else { |
| 1515 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
| 1516 | |
| 1517 | storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg, |
| 1518 | scale, size); |
| 1519 | } |
| 1520 | } |
| 1521 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1522 | STATIC bool genShiftOpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1523 | RegLocation rlDest, RegLocation rlSrc1, |
| 1524 | RegLocation rlShift) |
| 1525 | { |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1526 | int funcOffset; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1527 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1528 | switch( mir->dalvikInsn.opcode) { |
| 1529 | case OP_SHL_LONG: |
| 1530 | case OP_SHL_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1531 | funcOffset = OFFSETOF_MEMBER(Thread, pShlLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1532 | break; |
| 1533 | case OP_SHR_LONG: |
| 1534 | case OP_SHR_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1535 | funcOffset = OFFSETOF_MEMBER(Thread, pShrLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1536 | break; |
| 1537 | case OP_USHR_LONG: |
| 1538 | case OP_USHR_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1539 | funcOffset = OFFSETOF_MEMBER(Thread, pUshrLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1540 | break; |
| 1541 | default: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1542 | LOG(FATAL) << "Unexpected case"; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1543 | return true; |
| 1544 | } |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1545 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1546 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1547 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1548 | loadValueDirect(cUnit, rlShift, r2); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1549 | callRuntimeHelper(cUnit, rLR); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1550 | RegLocation rlResult = oatGetReturnWide(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1551 | storeValueWide(cUnit, rlDest, rlResult); |
| 1552 | return false; |
| 1553 | } |
| 1554 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1555 | STATIC bool genArithOpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1556 | RegLocation rlDest, RegLocation rlSrc1, |
| 1557 | RegLocation rlSrc2) |
| 1558 | { |
| 1559 | RegLocation rlResult; |
| 1560 | OpKind firstOp = kOpBkpt; |
| 1561 | OpKind secondOp = kOpBkpt; |
| 1562 | bool callOut = false; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1563 | bool checkZero = false; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1564 | int funcOffset; |
| 1565 | int retReg = r0; |
| 1566 | |
| 1567 | switch (mir->dalvikInsn.opcode) { |
| 1568 | case OP_NOT_LONG: |
| 1569 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 1570 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1571 | // Check for destructive overlap |
| 1572 | if (rlResult.lowReg == rlSrc2.highReg) { |
| 1573 | int tReg = oatAllocTemp(cUnit); |
| 1574 | genRegCopy(cUnit, tReg, rlSrc2.highReg); |
| 1575 | opRegReg(cUnit, kOpMvn, rlResult.lowReg, rlSrc2.lowReg); |
| 1576 | opRegReg(cUnit, kOpMvn, rlResult.highReg, tReg); |
| 1577 | oatFreeTemp(cUnit, tReg); |
| 1578 | } else { |
| 1579 | opRegReg(cUnit, kOpMvn, rlResult.lowReg, rlSrc2.lowReg); |
| 1580 | opRegReg(cUnit, kOpMvn, rlResult.highReg, rlSrc2.highReg); |
| 1581 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1582 | storeValueWide(cUnit, rlDest, rlResult); |
| 1583 | return false; |
| 1584 | break; |
| 1585 | case OP_ADD_LONG: |
| 1586 | case OP_ADD_LONG_2ADDR: |
| 1587 | firstOp = kOpAdd; |
| 1588 | secondOp = kOpAdc; |
| 1589 | break; |
| 1590 | case OP_SUB_LONG: |
| 1591 | case OP_SUB_LONG_2ADDR: |
| 1592 | firstOp = kOpSub; |
| 1593 | secondOp = kOpSbc; |
| 1594 | break; |
| 1595 | case OP_MUL_LONG: |
| 1596 | case OP_MUL_LONG_2ADDR: |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 1597 | callOut = true; |
| 1598 | retReg = r0; |
| 1599 | funcOffset = OFFSETOF_MEMBER(Thread, pLmul); |
| 1600 | break; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1601 | case OP_DIV_LONG: |
| 1602 | case OP_DIV_LONG_2ADDR: |
| 1603 | callOut = true; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1604 | checkZero = true; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1605 | retReg = r0; |
| 1606 | funcOffset = OFFSETOF_MEMBER(Thread, pLdivmod); |
| 1607 | break; |
| 1608 | /* NOTE - result is in r2/r3 instead of r0/r1 */ |
| 1609 | case OP_REM_LONG: |
| 1610 | case OP_REM_LONG_2ADDR: |
| 1611 | callOut = true; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1612 | checkZero = true; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1613 | funcOffset = OFFSETOF_MEMBER(Thread, pLdivmod); |
| 1614 | retReg = r2; |
| 1615 | break; |
| 1616 | case OP_AND_LONG_2ADDR: |
| 1617 | case OP_AND_LONG: |
| 1618 | firstOp = kOpAnd; |
| 1619 | secondOp = kOpAnd; |
| 1620 | break; |
| 1621 | case OP_OR_LONG: |
| 1622 | case OP_OR_LONG_2ADDR: |
| 1623 | firstOp = kOpOr; |
| 1624 | secondOp = kOpOr; |
| 1625 | break; |
| 1626 | case OP_XOR_LONG: |
| 1627 | case OP_XOR_LONG_2ADDR: |
| 1628 | firstOp = kOpXor; |
| 1629 | secondOp = kOpXor; |
| 1630 | break; |
| 1631 | case OP_NEG_LONG: { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1632 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 1633 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1634 | int zReg = oatAllocTemp(cUnit); |
| 1635 | loadConstantNoClobber(cUnit, zReg, 0); |
| 1636 | // Check for destructive overlap |
| 1637 | if (rlResult.lowReg == rlSrc2.highReg) { |
| 1638 | int tReg = oatAllocTemp(cUnit); |
| 1639 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1640 | zReg, rlSrc2.lowReg); |
| 1641 | opRegRegReg(cUnit, kOpSbc, rlResult.highReg, |
| 1642 | zReg, tReg); |
| 1643 | oatFreeTemp(cUnit, tReg); |
| 1644 | } else { |
| 1645 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1646 | zReg, rlSrc2.lowReg); |
| 1647 | opRegRegReg(cUnit, kOpSbc, rlResult.highReg, |
| 1648 | zReg, rlSrc2.highReg); |
| 1649 | } |
| 1650 | oatFreeTemp(cUnit, zReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1651 | storeValueWide(cUnit, rlDest, rlResult); |
| 1652 | return false; |
| 1653 | } |
| 1654 | default: |
| 1655 | LOG(FATAL) << "Invalid long arith op"; |
| 1656 | } |
| 1657 | if (!callOut) { |
| 1658 | genLong3Addr(cUnit, mir, firstOp, secondOp, rlDest, rlSrc1, rlSrc2); |
| 1659 | } else { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1660 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1661 | if (checkZero) { |
| 1662 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
| 1663 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1664 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1665 | int tReg = oatAllocTemp(cUnit); |
| 1666 | newLIR4(cUnit, kThumb2OrrRRRs, tReg, r2, r3, 0); |
| 1667 | oatFreeTemp(cUnit, tReg); |
| 1668 | genCheck(cUnit, kArmCondEq, mir, kArmThrowDivZero); |
| 1669 | } else { |
| 1670 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1671 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1672 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
| 1673 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1674 | callRuntimeHelper(cUnit, rLR); |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1675 | // Adjust return regs in to handle case of rem returning r2/r3 |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1676 | if (retReg == r0) |
| 1677 | rlResult = oatGetReturnWide(cUnit); |
| 1678 | else |
| 1679 | rlResult = oatGetReturnWideAlt(cUnit); |
| 1680 | storeValueWide(cUnit, rlDest, rlResult); |
| 1681 | } |
| 1682 | return false; |
| 1683 | } |
| 1684 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1685 | STATIC bool genArithOpInt(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1686 | RegLocation rlDest, RegLocation rlSrc1, |
| 1687 | RegLocation rlSrc2) |
| 1688 | { |
| 1689 | OpKind op = kOpBkpt; |
| 1690 | bool callOut = false; |
| 1691 | bool checkZero = false; |
| 1692 | bool unary = false; |
| 1693 | int retReg = r0; |
| 1694 | int funcOffset; |
| 1695 | RegLocation rlResult; |
| 1696 | bool shiftOp = false; |
| 1697 | |
| 1698 | switch (mir->dalvikInsn.opcode) { |
| 1699 | case OP_NEG_INT: |
| 1700 | op = kOpNeg; |
| 1701 | unary = true; |
| 1702 | break; |
| 1703 | case OP_NOT_INT: |
| 1704 | op = kOpMvn; |
| 1705 | unary = true; |
| 1706 | break; |
| 1707 | case OP_ADD_INT: |
| 1708 | case OP_ADD_INT_2ADDR: |
| 1709 | op = kOpAdd; |
| 1710 | break; |
| 1711 | case OP_SUB_INT: |
| 1712 | case OP_SUB_INT_2ADDR: |
| 1713 | op = kOpSub; |
| 1714 | break; |
| 1715 | case OP_MUL_INT: |
| 1716 | case OP_MUL_INT_2ADDR: |
| 1717 | op = kOpMul; |
| 1718 | break; |
| 1719 | case OP_DIV_INT: |
| 1720 | case OP_DIV_INT_2ADDR: |
| 1721 | callOut = true; |
| 1722 | checkZero = true; |
| 1723 | funcOffset = OFFSETOF_MEMBER(Thread, pIdiv); |
| 1724 | retReg = r0; |
| 1725 | break; |
| 1726 | /* NOTE: returns in r1 */ |
| 1727 | case OP_REM_INT: |
| 1728 | case OP_REM_INT_2ADDR: |
| 1729 | callOut = true; |
| 1730 | checkZero = true; |
| 1731 | funcOffset = OFFSETOF_MEMBER(Thread, pIdivmod); |
| 1732 | retReg = r1; |
| 1733 | break; |
| 1734 | case OP_AND_INT: |
| 1735 | case OP_AND_INT_2ADDR: |
| 1736 | op = kOpAnd; |
| 1737 | break; |
| 1738 | case OP_OR_INT: |
| 1739 | case OP_OR_INT_2ADDR: |
| 1740 | op = kOpOr; |
| 1741 | break; |
| 1742 | case OP_XOR_INT: |
| 1743 | case OP_XOR_INT_2ADDR: |
| 1744 | op = kOpXor; |
| 1745 | break; |
| 1746 | case OP_SHL_INT: |
| 1747 | case OP_SHL_INT_2ADDR: |
| 1748 | shiftOp = true; |
| 1749 | op = kOpLsl; |
| 1750 | break; |
| 1751 | case OP_SHR_INT: |
| 1752 | case OP_SHR_INT_2ADDR: |
| 1753 | shiftOp = true; |
| 1754 | op = kOpAsr; |
| 1755 | break; |
| 1756 | case OP_USHR_INT: |
| 1757 | case OP_USHR_INT_2ADDR: |
| 1758 | shiftOp = true; |
| 1759 | op = kOpLsr; |
| 1760 | break; |
| 1761 | default: |
| 1762 | LOG(FATAL) << "Invalid word arith op: " << |
| 1763 | (int)mir->dalvikInsn.opcode; |
| 1764 | } |
| 1765 | if (!callOut) { |
| 1766 | rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg); |
| 1767 | if (unary) { |
| 1768 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1769 | opRegReg(cUnit, op, rlResult.lowReg, |
| 1770 | rlSrc1.lowReg); |
| 1771 | } else { |
| 1772 | rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg); |
| 1773 | if (shiftOp) { |
| 1774 | int tReg = oatAllocTemp(cUnit); |
| 1775 | opRegRegImm(cUnit, kOpAnd, tReg, rlSrc2.lowReg, 31); |
| 1776 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1777 | opRegRegReg(cUnit, op, rlResult.lowReg, |
| 1778 | rlSrc1.lowReg, tReg); |
| 1779 | oatFreeTemp(cUnit, tReg); |
| 1780 | } else { |
| 1781 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1782 | opRegRegReg(cUnit, op, rlResult.lowReg, |
| 1783 | rlSrc1.lowReg, rlSrc2.lowReg); |
| 1784 | } |
| 1785 | } |
| 1786 | storeValue(cUnit, rlDest, rlResult); |
| 1787 | } else { |
| 1788 | RegLocation rlResult; |
| 1789 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1790 | loadValueDirectFixed(cUnit, rlSrc2, r1); |
| 1791 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1792 | loadValueDirectFixed(cUnit, rlSrc1, r0); |
| 1793 | if (checkZero) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1794 | genImmedCheck(cUnit, kArmCondEq, r1, 0, mir, kArmThrowDivZero); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1795 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1796 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1797 | if (retReg == r0) |
| 1798 | rlResult = oatGetReturn(cUnit); |
| 1799 | else |
| 1800 | rlResult = oatGetReturnAlt(cUnit); |
| 1801 | storeValue(cUnit, rlDest, rlResult); |
| 1802 | } |
| 1803 | return false; |
| 1804 | } |
| 1805 | |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1806 | /* Check if we need to check for pending suspend request */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1807 | STATIC void genSuspendTest(CompilationUnit* cUnit, MIR* mir) |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1808 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 1809 | if (NO_SUSPEND || (mir->optimizationFlags & MIR_IGNORE_SUSPEND_CHECK)) { |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1810 | return; |
| 1811 | } |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1812 | oatFlushAllRegs(cUnit); |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1813 | newLIR2(cUnit, kThumbSubRI8, rSUSPEND, 1); |
| 1814 | ArmLIR* branch = opCondBranch(cUnit, kArmCondEq); |
| 1815 | ArmLIR* retLab = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1816 | retLab->defMask = ENCODE_ALL; |
| 1817 | ArmLIR* target = (ArmLIR*)oatNew(sizeof(ArmLIR), true); |
| 1818 | target->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 1819 | target->opcode = kArmPseudoSuspendTarget; |
| 1820 | target->operands[0] = (intptr_t)retLab; |
| 1821 | target->operands[1] = mir->offset; |
| 1822 | branch->generic.target = (LIR*)target; |
| 1823 | oatInsertGrowableList(&cUnit->suspendLaunchpads, (intptr_t)target); |
| 1824 | } |
| 1825 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1826 | /* |
| 1827 | * The following are the first-level codegen routines that analyze the format |
| 1828 | * of each bytecode then either dispatch special purpose codegen routines |
| 1829 | * or produce corresponding Thumb instructions directly. |
| 1830 | */ |
| 1831 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1832 | STATIC bool isPowerOfTwo(int x) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1833 | { |
| 1834 | return (x & (x - 1)) == 0; |
| 1835 | } |
| 1836 | |
| 1837 | // Returns true if no more than two bits are set in 'x'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1838 | STATIC bool isPopCountLE2(unsigned int x) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1839 | { |
| 1840 | x &= x - 1; |
| 1841 | return (x & (x - 1)) == 0; |
| 1842 | } |
| 1843 | |
| 1844 | // Returns the index of the lowest set bit in 'x'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1845 | STATIC int lowestSetBit(unsigned int x) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1846 | int bit_posn = 0; |
| 1847 | while ((x & 0xf) == 0) { |
| 1848 | bit_posn += 4; |
| 1849 | x >>= 4; |
| 1850 | } |
| 1851 | while ((x & 1) == 0) { |
| 1852 | bit_posn++; |
| 1853 | x >>= 1; |
| 1854 | } |
| 1855 | return bit_posn; |
| 1856 | } |
| 1857 | |
| 1858 | // Returns true if it added instructions to 'cUnit' to divide 'rlSrc' by 'lit' |
| 1859 | // and store the result in 'rlDest'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1860 | STATIC bool handleEasyDivide(CompilationUnit* cUnit, Opcode dalvikOpcode, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1861 | RegLocation rlSrc, RegLocation rlDest, int lit) |
| 1862 | { |
| 1863 | if (lit < 2 || !isPowerOfTwo(lit)) { |
| 1864 | return false; |
| 1865 | } |
| 1866 | int k = lowestSetBit(lit); |
| 1867 | if (k >= 30) { |
| 1868 | // Avoid special cases. |
| 1869 | return false; |
| 1870 | } |
| 1871 | bool div = (dalvikOpcode == OP_DIV_INT_LIT8 || |
| 1872 | dalvikOpcode == OP_DIV_INT_LIT16); |
| 1873 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1874 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1875 | if (div) { |
| 1876 | int tReg = oatAllocTemp(cUnit); |
| 1877 | if (lit == 2) { |
| 1878 | // Division by 2 is by far the most common division by constant. |
| 1879 | opRegRegImm(cUnit, kOpLsr, tReg, rlSrc.lowReg, 32 - k); |
| 1880 | opRegRegReg(cUnit, kOpAdd, tReg, tReg, rlSrc.lowReg); |
| 1881 | opRegRegImm(cUnit, kOpAsr, rlResult.lowReg, tReg, k); |
| 1882 | } else { |
| 1883 | opRegRegImm(cUnit, kOpAsr, tReg, rlSrc.lowReg, 31); |
| 1884 | opRegRegImm(cUnit, kOpLsr, tReg, tReg, 32 - k); |
| 1885 | opRegRegReg(cUnit, kOpAdd, tReg, tReg, rlSrc.lowReg); |
| 1886 | opRegRegImm(cUnit, kOpAsr, rlResult.lowReg, tReg, k); |
| 1887 | } |
| 1888 | } else { |
| 1889 | int cReg = oatAllocTemp(cUnit); |
| 1890 | loadConstant(cUnit, cReg, lit - 1); |
| 1891 | int tReg1 = oatAllocTemp(cUnit); |
| 1892 | int tReg2 = oatAllocTemp(cUnit); |
| 1893 | if (lit == 2) { |
| 1894 | opRegRegImm(cUnit, kOpLsr, tReg1, rlSrc.lowReg, 32 - k); |
| 1895 | opRegRegReg(cUnit, kOpAdd, tReg2, tReg1, rlSrc.lowReg); |
| 1896 | opRegRegReg(cUnit, kOpAnd, tReg2, tReg2, cReg); |
| 1897 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg2, tReg1); |
| 1898 | } else { |
| 1899 | opRegRegImm(cUnit, kOpAsr, tReg1, rlSrc.lowReg, 31); |
| 1900 | opRegRegImm(cUnit, kOpLsr, tReg1, tReg1, 32 - k); |
| 1901 | opRegRegReg(cUnit, kOpAdd, tReg2, tReg1, rlSrc.lowReg); |
| 1902 | opRegRegReg(cUnit, kOpAnd, tReg2, tReg2, cReg); |
| 1903 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg2, tReg1); |
| 1904 | } |
| 1905 | } |
| 1906 | storeValue(cUnit, rlDest, rlResult); |
| 1907 | return true; |
| 1908 | } |
| 1909 | |
| 1910 | // Returns true if it added instructions to 'cUnit' to multiply 'rlSrc' by 'lit' |
| 1911 | // and store the result in 'rlDest'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1912 | STATIC bool handleEasyMultiply(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1913 | RegLocation rlSrc, RegLocation rlDest, int lit) |
| 1914 | { |
| 1915 | // Can we simplify this multiplication? |
| 1916 | bool powerOfTwo = false; |
| 1917 | bool popCountLE2 = false; |
| 1918 | bool powerOfTwoMinusOne = false; |
| 1919 | if (lit < 2) { |
| 1920 | // Avoid special cases. |
| 1921 | return false; |
| 1922 | } else if (isPowerOfTwo(lit)) { |
| 1923 | powerOfTwo = true; |
| 1924 | } else if (isPopCountLE2(lit)) { |
| 1925 | popCountLE2 = true; |
| 1926 | } else if (isPowerOfTwo(lit + 1)) { |
| 1927 | powerOfTwoMinusOne = true; |
| 1928 | } else { |
| 1929 | return false; |
| 1930 | } |
| 1931 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1932 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1933 | if (powerOfTwo) { |
| 1934 | // Shift. |
| 1935 | opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlSrc.lowReg, |
| 1936 | lowestSetBit(lit)); |
| 1937 | } else if (popCountLE2) { |
| 1938 | // Shift and add and shift. |
| 1939 | int firstBit = lowestSetBit(lit); |
| 1940 | int secondBit = lowestSetBit(lit ^ (1 << firstBit)); |
| 1941 | genMultiplyByTwoBitMultiplier(cUnit, rlSrc, rlResult, lit, |
| 1942 | firstBit, secondBit); |
| 1943 | } else { |
| 1944 | // Reverse subtract: (src << (shift + 1)) - src. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1945 | DCHECK(powerOfTwoMinusOne); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1946 | // TUNING: rsb dst, src, src lsl#lowestSetBit(lit + 1) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1947 | int tReg = oatAllocTemp(cUnit); |
| 1948 | opRegRegImm(cUnit, kOpLsl, tReg, rlSrc.lowReg, lowestSetBit(lit + 1)); |
| 1949 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg, rlSrc.lowReg); |
| 1950 | } |
| 1951 | storeValue(cUnit, rlDest, rlResult); |
| 1952 | return true; |
| 1953 | } |
| 1954 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1955 | STATIC bool genArithOpIntLit(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1956 | RegLocation rlDest, RegLocation rlSrc, |
| 1957 | int lit) |
| 1958 | { |
| 1959 | Opcode dalvikOpcode = mir->dalvikInsn.opcode; |
| 1960 | RegLocation rlResult; |
| 1961 | OpKind op = (OpKind)0; /* Make gcc happy */ |
| 1962 | int shiftOp = false; |
| 1963 | bool isDiv = false; |
| 1964 | int funcOffset; |
| 1965 | |
| 1966 | switch (dalvikOpcode) { |
| 1967 | case OP_RSUB_INT_LIT8: |
| 1968 | case OP_RSUB_INT: { |
| 1969 | int tReg; |
| 1970 | //TUNING: add support for use of Arm rsub op |
| 1971 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1972 | tReg = oatAllocTemp(cUnit); |
| 1973 | loadConstant(cUnit, tReg, lit); |
| 1974 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1975 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1976 | tReg, rlSrc.lowReg); |
| 1977 | storeValue(cUnit, rlDest, rlResult); |
| 1978 | return false; |
| 1979 | break; |
| 1980 | } |
| 1981 | |
| 1982 | case OP_ADD_INT_LIT8: |
| 1983 | case OP_ADD_INT_LIT16: |
| 1984 | op = kOpAdd; |
| 1985 | break; |
| 1986 | case OP_MUL_INT_LIT8: |
| 1987 | case OP_MUL_INT_LIT16: { |
| 1988 | if (handleEasyMultiply(cUnit, rlSrc, rlDest, lit)) { |
| 1989 | return false; |
| 1990 | } |
| 1991 | op = kOpMul; |
| 1992 | break; |
| 1993 | } |
| 1994 | case OP_AND_INT_LIT8: |
| 1995 | case OP_AND_INT_LIT16: |
| 1996 | op = kOpAnd; |
| 1997 | break; |
| 1998 | case OP_OR_INT_LIT8: |
| 1999 | case OP_OR_INT_LIT16: |
| 2000 | op = kOpOr; |
| 2001 | break; |
| 2002 | case OP_XOR_INT_LIT8: |
| 2003 | case OP_XOR_INT_LIT16: |
| 2004 | op = kOpXor; |
| 2005 | break; |
| 2006 | case OP_SHL_INT_LIT8: |
| 2007 | lit &= 31; |
| 2008 | shiftOp = true; |
| 2009 | op = kOpLsl; |
| 2010 | break; |
| 2011 | case OP_SHR_INT_LIT8: |
| 2012 | lit &= 31; |
| 2013 | shiftOp = true; |
| 2014 | op = kOpAsr; |
| 2015 | break; |
| 2016 | case OP_USHR_INT_LIT8: |
| 2017 | lit &= 31; |
| 2018 | shiftOp = true; |
| 2019 | op = kOpLsr; |
| 2020 | break; |
| 2021 | |
| 2022 | case OP_DIV_INT_LIT8: |
| 2023 | case OP_DIV_INT_LIT16: |
| 2024 | case OP_REM_INT_LIT8: |
| 2025 | case OP_REM_INT_LIT16: |
| 2026 | if (lit == 0) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 2027 | genImmedCheck(cUnit, kArmCondAl, 0, 0, mir, kArmThrowDivZero); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2028 | return false; |
| 2029 | } |
| 2030 | if (handleEasyDivide(cUnit, dalvikOpcode, rlSrc, rlDest, lit)) { |
| 2031 | return false; |
| 2032 | } |
| 2033 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
| 2034 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 2035 | oatClobber(cUnit, r0); |
| 2036 | if ((dalvikOpcode == OP_DIV_INT_LIT8) || |
| 2037 | (dalvikOpcode == OP_DIV_INT_LIT16)) { |
| 2038 | funcOffset = OFFSETOF_MEMBER(Thread, pIdiv); |
| 2039 | isDiv = true; |
| 2040 | } else { |
| 2041 | funcOffset = OFFSETOF_MEMBER(Thread, pIdivmod); |
| 2042 | isDiv = false; |
| 2043 | } |
| 2044 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 2045 | loadConstant(cUnit, r1, lit); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 2046 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2047 | if (isDiv) |
| 2048 | rlResult = oatGetReturn(cUnit); |
| 2049 | else |
| 2050 | rlResult = oatGetReturnAlt(cUnit); |
| 2051 | storeValue(cUnit, rlDest, rlResult); |
| 2052 | return false; |
| 2053 | break; |
| 2054 | default: |
| 2055 | return true; |
| 2056 | } |
| 2057 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 2058 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 2059 | // Avoid shifts by literal 0 - no support in Thumb. Change to copy |
| 2060 | if (shiftOp && (lit == 0)) { |
| 2061 | genRegCopy(cUnit, rlResult.lowReg, rlSrc.lowReg); |
| 2062 | } else { |
| 2063 | opRegRegImm(cUnit, op, rlResult.lowReg, rlSrc.lowReg, lit); |
| 2064 | } |
| 2065 | storeValue(cUnit, rlDest, rlResult); |
| 2066 | return false; |
| 2067 | } |
| 2068 | |
| 2069 | /* Architectural-specific debugging helpers go here */ |
| 2070 | void oatArchDump(void) |
| 2071 | { |
| 2072 | /* Print compiled opcode in this VM instance */ |
| 2073 | int i, start, streak; |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2074 | std::string buf; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2075 | |
| 2076 | streak = i = 0; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2077 | while (opcodeCoverage[i] == 0 && i < kNumPackedOpcodes) { |
| 2078 | i++; |
| 2079 | } |
| 2080 | if (i == kNumPackedOpcodes) { |
| 2081 | return; |
| 2082 | } |
| 2083 | for (start = i++, streak = 1; i < kNumPackedOpcodes; i++) { |
| 2084 | if (opcodeCoverage[i]) { |
| 2085 | streak++; |
| 2086 | } else { |
| 2087 | if (streak == 1) { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2088 | StringAppendF(&buf, "%x,", start); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2089 | } else { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2090 | StringAppendF(&buf, "%x-%x,", start, start + streak - 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2091 | } |
| 2092 | streak = 0; |
| 2093 | while (opcodeCoverage[i] == 0 && i < kNumPackedOpcodes) { |
| 2094 | i++; |
| 2095 | } |
| 2096 | if (i < kNumPackedOpcodes) { |
| 2097 | streak = 1; |
| 2098 | start = i; |
| 2099 | } |
| 2100 | } |
| 2101 | } |
| 2102 | if (streak) { |
| 2103 | if (streak == 1) { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2104 | StringAppendF(&buf, "%x", start); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2105 | } else { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2106 | StringAppendF(&buf, "%x-%x", start, start + streak - 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2107 | } |
| 2108 | } |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2109 | if (!buf.empty()) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2110 | LOG(INFO) << "dalvik.vm.oat.op = " << buf; |
| 2111 | } |
| 2112 | } |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 2113 | |
| 2114 | } // namespace art |