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 | { |
buzbee | 85d8c1e | 2012-01-27 15:52:35 -0800 | [diff] [blame] | 132 | std::map<unsigned int, LIR*>::iterator it; |
| 133 | it = cUnit->boundaryMap.find(vaddr); |
| 134 | if (it == cUnit->boundaryMap.end()) { |
| 135 | LOG(FATAL) << "Error: didn't find vaddr 0x" << std::hex << vaddr; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 136 | } |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 137 | ArmLIR* newLabel = (ArmLIR*)oatNew(sizeof(ArmLIR), true, kAllocLIR); |
buzbee | 85d8c1e | 2012-01-27 15:52:35 -0800 | [diff] [blame] | 138 | newLabel->generic.dalvikOffset = vaddr; |
| 139 | newLabel->opcode = kArmPseudoCaseLabel; |
| 140 | newLabel->operands[0] = keyVal; |
| 141 | oatInsertLIRAfter(it->second, (LIR*)newLabel); |
| 142 | return newLabel; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 143 | } |
| 144 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 145 | STATIC void markPackedCaseLabels(CompilationUnit* cUnit, SwitchTable *tabRec) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 146 | { |
| 147 | const u2* table = tabRec->table; |
| 148 | int baseVaddr = tabRec->vaddr; |
| 149 | int *targets = (int*)&table[4]; |
| 150 | int entries = table[1]; |
| 151 | int lowKey = s4FromSwitchData(&table[2]); |
| 152 | for (int i = 0; i < entries; i++) { |
| 153 | tabRec->targets[i] = insertCaseLabel(cUnit, baseVaddr + targets[i], |
| 154 | i + lowKey); |
| 155 | } |
| 156 | } |
| 157 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 158 | STATIC void markSparseCaseLabels(CompilationUnit* cUnit, SwitchTable *tabRec) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 159 | { |
| 160 | const u2* table = tabRec->table; |
| 161 | int baseVaddr = tabRec->vaddr; |
| 162 | int entries = table[1]; |
| 163 | int* keys = (int*)&table[2]; |
| 164 | int* targets = &keys[entries]; |
| 165 | for (int i = 0; i < entries; i++) { |
| 166 | tabRec->targets[i] = insertCaseLabel(cUnit, baseVaddr + targets[i], |
| 167 | keys[i]); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | void oatProcessSwitchTables(CompilationUnit* cUnit) |
| 172 | { |
| 173 | GrowableListIterator iterator; |
| 174 | oatGrowableListIteratorInit(&cUnit->switchTables, &iterator); |
| 175 | while (true) { |
| 176 | SwitchTable *tabRec = (SwitchTable *) oatGrowableListIteratorNext( |
| 177 | &iterator); |
| 178 | if (tabRec == NULL) break; |
| 179 | if (tabRec->table[0] == kPackedSwitchSignature) |
| 180 | markPackedCaseLabels(cUnit, tabRec); |
| 181 | else if (tabRec->table[0] == kSparseSwitchSignature) |
| 182 | markSparseCaseLabels(cUnit, tabRec); |
| 183 | else { |
| 184 | LOG(FATAL) << "Invalid switch table"; |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 189 | STATIC void dumpSparseSwitchTable(const u2* table) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 190 | /* |
| 191 | * Sparse switch data format: |
| 192 | * ushort ident = 0x0200 magic value |
| 193 | * ushort size number of entries in the table; > 0 |
| 194 | * int keys[size] keys, sorted low-to-high; 32-bit aligned |
| 195 | * int targets[size] branch targets, relative to switch opcode |
| 196 | * |
| 197 | * Total size is (2+size*4) 16-bit code units. |
| 198 | */ |
| 199 | { |
| 200 | u2 ident = table[0]; |
| 201 | int entries = table[1]; |
| 202 | int* keys = (int*)&table[2]; |
| 203 | int* targets = &keys[entries]; |
| 204 | LOG(INFO) << "Sparse switch table - ident:0x" << std::hex << ident << |
| 205 | ", entries: " << std::dec << entries; |
| 206 | for (int i = 0; i < entries; i++) { |
| 207 | LOG(INFO) << " Key[" << keys[i] << "] -> 0x" << std::hex << |
| 208 | targets[i]; |
| 209 | } |
| 210 | } |
| 211 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 212 | STATIC void dumpPackedSwitchTable(const u2* table) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 213 | /* |
| 214 | * Packed switch data format: |
| 215 | * ushort ident = 0x0100 magic value |
| 216 | * ushort size number of entries in the table |
| 217 | * int first_key first (and lowest) switch case value |
| 218 | * int targets[size] branch targets, relative to switch opcode |
| 219 | * |
| 220 | * Total size is (4+size*2) 16-bit code units. |
| 221 | */ |
| 222 | { |
| 223 | u2 ident = table[0]; |
| 224 | int* targets = (int*)&table[4]; |
| 225 | int entries = table[1]; |
| 226 | int lowKey = s4FromSwitchData(&table[2]); |
| 227 | LOG(INFO) << "Packed switch table - ident:0x" << std::hex << ident << |
| 228 | ", entries: " << std::dec << entries << ", lowKey: " << lowKey; |
| 229 | for (int i = 0; i < entries; i++) { |
| 230 | LOG(INFO) << " Key[" << (i + lowKey) << "] -> 0x" << std::hex << |
| 231 | targets[i]; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | /* |
| 236 | * The sparse table in the literal pool is an array of <key,displacement> |
| 237 | * pairs. For each set, we'll load them as a pair using ldmia. |
| 238 | * This means that the register number of the temp we use for the key |
| 239 | * must be lower than the reg for the displacement. |
| 240 | * |
| 241 | * The test loop will look something like: |
| 242 | * |
| 243 | * adr rBase, <table> |
| 244 | * ldr rVal, [rSP, vRegOff] |
| 245 | * mov rIdx, #tableSize |
| 246 | * lp: |
| 247 | * ldmia rBase!, {rKey, rDisp} |
| 248 | * sub rIdx, #1 |
| 249 | * cmp rVal, rKey |
| 250 | * ifeq |
| 251 | * add rPC, rDisp ; This is the branch from which we compute displacement |
| 252 | * cbnz rIdx, lp |
| 253 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 254 | STATIC void genSparseSwitch(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 255 | RegLocation rlSrc) |
| 256 | { |
| 257 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 258 | if (cUnit->printMe) { |
| 259 | dumpSparseSwitchTable(table); |
| 260 | } |
| 261 | // Add the table to the list - we'll process it later |
| 262 | SwitchTable *tabRec = (SwitchTable *)oatNew(sizeof(SwitchTable), |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 263 | true, kAllocData); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 264 | tabRec->table = table; |
| 265 | tabRec->vaddr = mir->offset; |
| 266 | int size = table[1]; |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 267 | tabRec->targets = (ArmLIR* *)oatNew(size * sizeof(ArmLIR*), true, |
| 268 | kAllocLIR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 269 | oatInsertGrowableList(&cUnit->switchTables, (intptr_t)tabRec); |
| 270 | |
| 271 | // Get the switch value |
| 272 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 273 | int rBase = oatAllocTemp(cUnit); |
| 274 | /* Allocate key and disp temps */ |
| 275 | int rKey = oatAllocTemp(cUnit); |
| 276 | int rDisp = oatAllocTemp(cUnit); |
| 277 | // Make sure rKey's register number is less than rDisp's number for ldmia |
| 278 | if (rKey > rDisp) { |
| 279 | int tmp = rDisp; |
| 280 | rDisp = rKey; |
| 281 | rKey = tmp; |
| 282 | } |
| 283 | // Materialize a pointer to the switch table |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 284 | newLIR3(cUnit, kThumb2Adr, rBase, 0, (intptr_t)tabRec); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 285 | // Set up rIdx |
| 286 | int rIdx = oatAllocTemp(cUnit); |
| 287 | loadConstant(cUnit, rIdx, size); |
| 288 | // Establish loop branch target |
| 289 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 290 | target->defMask = ENCODE_ALL; |
| 291 | // Load next key/disp |
| 292 | newLIR2(cUnit, kThumb2LdmiaWB, rBase, (1 << rKey) | (1 << rDisp)); |
| 293 | opRegReg(cUnit, kOpCmp, rKey, rlSrc.lowReg); |
| 294 | // Go if match. NOTE: No instruction set switch here - must stay Thumb2 |
| 295 | genIT(cUnit, kArmCondEq, ""); |
| 296 | ArmLIR* switchBranch = newLIR1(cUnit, kThumb2AddPCR, rDisp); |
| 297 | tabRec->bxInst = switchBranch; |
| 298 | // Needs to use setflags encoding here |
| 299 | newLIR3(cUnit, kThumb2SubsRRI12, rIdx, rIdx, 1); |
| 300 | ArmLIR* branch = opCondBranch(cUnit, kArmCondNe); |
| 301 | branch->generic.target = (LIR*)target; |
| 302 | } |
| 303 | |
| 304 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 305 | STATIC void genPackedSwitch(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 306 | RegLocation rlSrc) |
| 307 | { |
| 308 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 309 | if (cUnit->printMe) { |
| 310 | dumpPackedSwitchTable(table); |
| 311 | } |
| 312 | // Add the table to the list - we'll process it later |
| 313 | SwitchTable *tabRec = (SwitchTable *)oatNew(sizeof(SwitchTable), |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 314 | true, kAllocData); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 315 | tabRec->table = table; |
| 316 | tabRec->vaddr = mir->offset; |
| 317 | int size = table[1]; |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 318 | tabRec->targets = (ArmLIR* *)oatNew(size * sizeof(ArmLIR*), true, |
| 319 | kAllocLIR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 320 | oatInsertGrowableList(&cUnit->switchTables, (intptr_t)tabRec); |
| 321 | |
| 322 | // Get the switch value |
| 323 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 324 | int tableBase = oatAllocTemp(cUnit); |
| 325 | // Materialize a pointer to the switch table |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 326 | newLIR3(cUnit, kThumb2Adr, tableBase, 0, (intptr_t)tabRec); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 327 | int lowKey = s4FromSwitchData(&table[2]); |
| 328 | int keyReg; |
| 329 | // Remove the bias, if necessary |
| 330 | if (lowKey == 0) { |
| 331 | keyReg = rlSrc.lowReg; |
| 332 | } else { |
| 333 | keyReg = oatAllocTemp(cUnit); |
| 334 | opRegRegImm(cUnit, kOpSub, keyReg, rlSrc.lowReg, lowKey); |
| 335 | } |
| 336 | // Bounds check - if < 0 or >= size continue following switch |
| 337 | opRegImm(cUnit, kOpCmp, keyReg, size-1); |
| 338 | ArmLIR* branchOver = opCondBranch(cUnit, kArmCondHi); |
| 339 | |
| 340 | // Load the displacement from the switch table |
| 341 | int dispReg = oatAllocTemp(cUnit); |
| 342 | loadBaseIndexed(cUnit, tableBase, keyReg, dispReg, 2, kWord); |
| 343 | |
| 344 | // ..and go! NOTE: No instruction set switch here - must stay Thumb2 |
| 345 | ArmLIR* switchBranch = newLIR1(cUnit, kThumb2AddPCR, dispReg); |
| 346 | tabRec->bxInst = switchBranch; |
| 347 | |
| 348 | /* branchOver target here */ |
| 349 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 350 | target->defMask = ENCODE_ALL; |
| 351 | branchOver->generic.target = (LIR*)target; |
| 352 | } |
| 353 | |
| 354 | /* |
| 355 | * Array data table format: |
| 356 | * ushort ident = 0x0300 magic value |
| 357 | * ushort width width of each element in the table |
| 358 | * uint size number of elements in the table |
| 359 | * ubyte data[size*width] table of data values (may contain a single-byte |
| 360 | * padding at the end) |
| 361 | * |
| 362 | * Total size is 4+(width * size + 1)/2 16-bit code units. |
| 363 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 364 | STATIC void genFillArrayData(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 365 | RegLocation rlSrc) |
| 366 | { |
| 367 | const u2* table = cUnit->insns + mir->offset + mir->dalvikInsn.vB; |
| 368 | // Add the table to the list - we'll process it later |
| 369 | FillArrayData *tabRec = (FillArrayData *) |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 370 | oatNew(sizeof(FillArrayData), true, kAllocData); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 371 | tabRec->table = table; |
| 372 | tabRec->vaddr = mir->offset; |
| 373 | u2 width = tabRec->table[1]; |
| 374 | u4 size = tabRec->table[2] | (((u4)tabRec->table[3]) << 16); |
| 375 | tabRec->size = (size * width) + 8; |
| 376 | |
| 377 | oatInsertGrowableList(&cUnit->fillArrayData, (intptr_t)tabRec); |
| 378 | |
| 379 | // Making a call - use explicit registers |
| 380 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
| 381 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 382 | loadWordDisp(cUnit, rSELF, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 383 | OFFSETOF_MEMBER(Thread, pHandleFillArrayDataFromCode), rLR); |
buzbee | e6d6196 | 2011-08-27 11:58:19 -0700 | [diff] [blame] | 384 | // Materialize a pointer to the fill data image |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 385 | newLIR3(cUnit, kThumb2Adr, r1, 0, (intptr_t)tabRec); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 386 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Mark garbage collection card. Skip if the value we're storing is null. |
| 391 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 392 | STATIC void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 393 | { |
| 394 | int regCardBase = oatAllocTemp(cUnit); |
| 395 | int regCardNo = oatAllocTemp(cUnit); |
| 396 | ArmLIR* branchOver = genCmpImmBranch(cUnit, kArmCondEq, valReg, 0); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 397 | loadWordDisp(cUnit, rSELF, Thread::CardTableOffset().Int32Value(), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 398 | regCardBase); |
| 399 | opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, GC_CARD_SHIFT); |
| 400 | storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0, |
| 401 | kUnsignedByte); |
| 402 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 403 | target->defMask = ENCODE_ALL; |
| 404 | branchOver->generic.target = (LIR*)target; |
| 405 | oatFreeTemp(cUnit, regCardBase); |
| 406 | oatFreeTemp(cUnit, regCardNo); |
| 407 | } |
| 408 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 409 | /* |
| 410 | * Helper function for Iget/put when field not resolved at compile time. |
| 411 | * Will trash call temps and return with the field offset in r0. |
| 412 | */ |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 413 | STATIC void getFieldOffset(CompilationUnit* cUnit, MIR* mir, Field* fieldPtr) |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 414 | { |
| 415 | int fieldIdx = mir->dalvikInsn.vC; |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 416 | oatFlushAllRegs(cUnit); |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 417 | warnIfUnresolved(cUnit, fieldIdx, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 418 | oatLockCallTemps(cUnit); // Explicit register usage |
| 419 | loadCurrMethodDirect(cUnit, r1); // arg1 <= Method* |
| 420 | loadWordDisp(cUnit, r1, |
| 421 | Method::DexCacheResolvedFieldsOffset().Int32Value(), r0); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 422 | loadWordDisp(cUnit, r0, Array::DataOffset().Int32Value() + |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 423 | sizeof(int32_t*)* fieldIdx, r0); |
| 424 | /* |
| 425 | * For testing, omit the test for run-time resolution. This will |
| 426 | * force all accesses to go through the runtime resolution path. |
| 427 | */ |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 428 | ArmLIR* branchOver = NULL; |
| 429 | if (!EXERCISE_SLOWEST_FIELD_PATH) { |
| 430 | branchOver = genCmpImmBranch(cUnit, kArmCondNe, r0, 0); |
| 431 | } |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 432 | // Resolve |
| 433 | loadWordDisp(cUnit, rSELF, |
Brian Carlstrom | 845490b | 2011-09-19 15:56:53 -0700 | [diff] [blame] | 434 | OFFSETOF_MEMBER(Thread, pFindInstanceFieldFromCode), rLR); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 435 | loadConstant(cUnit, r0, fieldIdx); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 436 | callRuntimeHelper(cUnit, rLR); // FindInstanceFieldFromCoderesolveTypeFromCode(idx, method) |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 437 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 438 | target->defMask = ENCODE_ALL; |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 439 | if (!EXERCISE_SLOWEST_FIELD_PATH) { |
| 440 | branchOver->generic.target = (LIR*)target; |
| 441 | } |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 442 | // Free temps (except for r0) |
| 443 | oatFreeTemp(cUnit, r1); |
| 444 | oatFreeTemp(cUnit, r2); |
| 445 | oatFreeTemp(cUnit, r3); |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 446 | loadWordDisp(cUnit, r0, Field::OffsetOffset().Int32Value(), r0); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 447 | } |
| 448 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 449 | STATIC void genIGet(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 450 | RegLocation rlDest, RegLocation rlObj) |
| 451 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 452 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 453 | RegLocation rlResult; |
| 454 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 455 | if (SLOW_FIELD_PATH || fieldPtr == NULL) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 456 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 457 | // Field offset in r0 |
| 458 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 459 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 460 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 461 | loadBaseIndexed(cUnit, rlObj.lowReg, r0, rlResult.lowReg, 0, kWord); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 462 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 463 | storeValue(cUnit, rlDest, rlResult); |
| 464 | } else { |
| 465 | #if ANDROID_SMP != 0 |
Elliott Hughes | 1d3f114 | 2011-09-13 12:00:00 -0700 | [diff] [blame] | 466 | bool isVolatile = fieldPtr->IsVolatile(); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 467 | #else |
| 468 | bool isVolatile = false; |
| 469 | #endif |
| 470 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 471 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 472 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 473 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 474 | loadBaseDisp(cUnit, mir, rlObj.lowReg, fieldOffset, rlResult.lowReg, |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 475 | kWord, rlObj.sRegLow); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 476 | if (isVolatile) { |
| 477 | oatGenMemBarrier(cUnit, kSY); |
| 478 | } |
| 479 | storeValue(cUnit, rlDest, rlResult); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 480 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 481 | } |
| 482 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 483 | STATIC void genIPut(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 484 | RegLocation rlSrc, RegLocation rlObj, bool isObject) |
| 485 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 486 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 487 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 488 | if (SLOW_FIELD_PATH || fieldPtr == NULL) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 489 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 490 | // Field offset in r0 |
| 491 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 492 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 493 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null object? */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 494 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 495 | storeBaseIndexed(cUnit, rlObj.lowReg, r0, rlSrc.lowReg, 0, kWord); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 496 | } else { |
| 497 | #if ANDROID_SMP != 0 |
Elliott Hughes | 1d3f114 | 2011-09-13 12:00:00 -0700 | [diff] [blame] | 498 | bool isVolatile = fieldPtr->IsVolatile(); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 499 | #else |
| 500 | bool isVolatile = false; |
| 501 | #endif |
| 502 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 503 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 504 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 505 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 506 | |
| 507 | if (isVolatile) { |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 508 | oatGenMemBarrier(cUnit, kST); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 509 | } |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 510 | storeBaseDisp(cUnit, rlObj.lowReg, fieldOffset, rlSrc.lowReg, kWord); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 511 | if (isVolatile) { |
| 512 | oatGenMemBarrier(cUnit, kSY); |
| 513 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 514 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 515 | if (isObject) { |
| 516 | /* NOTE: marking card based on object head */ |
| 517 | markGCCard(cUnit, rlSrc.lowReg, rlObj.lowReg); |
| 518 | } |
| 519 | } |
| 520 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 521 | STATIC void genIGetWide(CompilationUnit* cUnit, MIR* mir, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 522 | RegLocation rlObj) |
| 523 | { |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 524 | RegLocation rlResult; |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 525 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 526 | #if ANDROID_SMP != 0 |
| 527 | bool isVolatile = (fieldPtr == NULL) || fieldPtr->IsVolatile(); |
| 528 | #else |
| 529 | bool isVolatile = false; |
| 530 | #endif |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 531 | if (SLOW_FIELD_PATH || (fieldPtr == NULL) || isVolatile) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 532 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 533 | // Field offset in r0 |
| 534 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 535 | rlResult = oatEvalLoc(cUnit, rlDest, kAnyReg, true); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 536 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 537 | opRegReg(cUnit, kOpAdd, r0, rlObj.lowReg); |
| 538 | loadPair(cUnit, r0, rlResult.lowReg, rlResult.highReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 539 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 540 | storeValueWide(cUnit, rlDest, rlResult); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 541 | } else { |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 542 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
| 543 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 544 | int regPtr = oatAllocTemp(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 545 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 546 | DCHECK(rlDest.wide); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 547 | |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 548 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 549 | opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset); |
| 550 | rlResult = oatEvalLoc(cUnit, rlDest, kAnyReg, true); |
| 551 | |
| 552 | loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg); |
| 553 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 554 | oatFreeTemp(cUnit, regPtr); |
| 555 | storeValueWide(cUnit, rlDest, rlResult); |
| 556 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 557 | } |
| 558 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 559 | STATIC void genIPutWide(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 560 | RegLocation rlObj) |
| 561 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 562 | Field* fieldPtr = cUnit->dex_cache->GetResolvedField(mir->dalvikInsn.vC); |
buzbee | 12246b8 | 2011-09-29 14:15:05 -0700 | [diff] [blame] | 563 | #if ANDROID_SMP != 0 |
| 564 | bool isVolatile = (fieldPtr == NULL) || fieldPtr->IsVolatile(); |
| 565 | #else |
| 566 | bool isVolatile = false; |
| 567 | #endif |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 568 | if (SLOW_FIELD_PATH || (fieldPtr == NULL) || isVolatile) { |
Elliott Hughes | 81bc509 | 2011-09-30 17:25:59 -0700 | [diff] [blame] | 569 | getFieldOffset(cUnit, mir, fieldPtr); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 570 | // Field offset in r0 |
| 571 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 572 | rlSrc = loadValueWide(cUnit, rlSrc, kAnyReg); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 573 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 574 | opRegReg(cUnit, kOpAdd, r0, rlObj.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 575 | oatGenMemBarrier(cUnit, kSY); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 576 | storePair(cUnit, r0, rlSrc.lowReg, rlSrc.highReg); |
| 577 | } else { |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 578 | int fieldOffset = fieldPtr->GetOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 579 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 580 | rlObj = loadValue(cUnit, rlObj, kCoreReg); |
| 581 | int regPtr; |
| 582 | rlSrc = loadValueWide(cUnit, rlSrc, kAnyReg); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 583 | genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, mir);/* null obj? */ |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 584 | regPtr = oatAllocTemp(cUnit); |
| 585 | opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset); |
| 586 | |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 587 | storePair(cUnit, regPtr, rlSrc.lowReg, rlSrc.highReg); |
| 588 | |
| 589 | oatFreeTemp(cUnit, regPtr); |
| 590 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 591 | } |
| 592 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 593 | STATIC void genConstClass(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 594 | RegLocation rlDest, RegLocation rlSrc) |
| 595 | { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 596 | uint32_t type_idx = mir->dalvikInsn.vB; |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 597 | int mReg = loadCurrMethod(cUnit); |
| 598 | int resReg = oatAllocTemp(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 599 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 600 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 601 | cUnit->dex_cache, |
| 602 | *cUnit->dex_file, |
| 603 | type_idx)) { |
| 604 | // Call out to helper which resolves type and verifies access. |
| 605 | // Resolved type returned in r0. |
| 606 | loadWordDisp(cUnit, rSELF, |
| 607 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 608 | rLR); |
| 609 | genRegCopy(cUnit, r1, mReg); |
| 610 | loadConstant(cUnit, r0, type_idx); |
| 611 | callRuntimeHelper(cUnit, rLR); |
| 612 | RegLocation rlResult = oatGetReturn(cUnit); |
| 613 | storeValue(cUnit, rlDest, rlResult); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 614 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 615 | // We're don't need access checks, load type from dex cache |
| 616 | int32_t dex_cache_offset = Method::DexCacheResolvedTypesOffset().Int32Value(); |
| 617 | loadWordDisp(cUnit, mReg, dex_cache_offset, resReg); |
| 618 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 619 | loadWordDisp(cUnit, resReg, offset_of_type, rlResult.lowReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 620 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, |
| 621 | type_idx) || |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 622 | SLOW_TYPE_PATH) { |
| 623 | // Slow path, at runtime test if the type is null and if so initialize |
| 624 | oatFlushAllRegs(cUnit); |
| 625 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, rlResult.lowReg, 0); |
| 626 | // Resolved, store and hop over following code |
| 627 | storeValue(cUnit, rlDest, rlResult); |
| 628 | ArmLIR* branch2 = genUnconditionalBranch(cUnit,0); |
| 629 | // TUNING: move slow path to end & remove unconditional branch |
| 630 | ArmLIR* target1 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 631 | target1->defMask = ENCODE_ALL; |
| 632 | // Call out to helper, which will return resolved type in r0 |
| 633 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 634 | genRegCopy(cUnit, r1, mReg); |
| 635 | loadConstant(cUnit, r0, type_idx); |
| 636 | callRuntimeHelper(cUnit, rLR); |
| 637 | RegLocation rlResult = oatGetReturn(cUnit); |
| 638 | storeValue(cUnit, rlDest, rlResult); |
| 639 | // Rejoin code paths |
| 640 | ArmLIR* target2 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 641 | target2->defMask = ENCODE_ALL; |
| 642 | branch1->generic.target = (LIR*)target1; |
| 643 | branch2->generic.target = (LIR*)target2; |
| 644 | } else { |
| 645 | // Fast path, we're done - just store result |
| 646 | storeValue(cUnit, rlDest, rlResult); |
| 647 | } |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 648 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 649 | } |
| 650 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 651 | STATIC void genConstString(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 652 | RegLocation rlDest, RegLocation rlSrc) |
| 653 | { |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 654 | /* NOTE: Most strings should be available at compile time */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 655 | uint32_t string_idx = mir->dalvikInsn.vB; |
| 656 | int32_t offset_of_string = Array::DataOffset().Int32Value() + (sizeof(String*) * string_idx); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 657 | if (!cUnit->compiler->CanAssumeStringIsPresentInDexCache(cUnit->dex_cache, string_idx) || |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 658 | SLOW_STRING_PATH) { |
| 659 | // slow path, resolve string if not in dex cache |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 660 | oatFlushAllRegs(cUnit); |
| 661 | oatLockCallTemps(cUnit); // Using explicit registers |
| 662 | loadCurrMethodDirect(cUnit, r2); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 663 | loadWordDisp(cUnit, r2, Method::DexCacheStringsOffset().Int32Value(), r0); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 664 | // Might call out to helper, which will return resolved string in r0 |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 665 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pResolveStringFromCode), rLR); |
| 666 | loadWordDisp(cUnit, r0, offset_of_string, r0); |
| 667 | loadConstant(cUnit, r1, string_idx); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 668 | opRegImm(cUnit, kOpCmp, r0, 0); // Is resolved? |
| 669 | genBarrier(cUnit); |
| 670 | // For testing, always force through helper |
| 671 | if (!EXERCISE_SLOWEST_STRING_PATH) { |
| 672 | genIT(cUnit, kArmCondEq, "T"); |
| 673 | } |
| 674 | genRegCopy(cUnit, r0, r2); // .eq |
| 675 | opReg(cUnit, kOpBlx, rLR); // .eq, helper(Method*, string_idx) |
| 676 | genBarrier(cUnit); |
| 677 | storeValue(cUnit, rlDest, getRetLoc(cUnit)); |
| 678 | } else { |
| 679 | int mReg = loadCurrMethod(cUnit); |
| 680 | int resReg = oatAllocTemp(cUnit); |
| 681 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 682 | loadWordDisp(cUnit, mReg, Method::DexCacheStringsOffset().Int32Value(), resReg); |
| 683 | loadWordDisp(cUnit, resReg, offset_of_string, rlResult.lowReg); |
buzbee | ce30293 | 2011-10-04 14:32:18 -0700 | [diff] [blame] | 684 | storeValue(cUnit, rlDest, rlResult); |
| 685 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 686 | } |
| 687 | |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 688 | /* |
| 689 | * Let helper function take care of everything. Will |
| 690 | * call Class::NewInstanceFromCode(type_idx, method); |
| 691 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 692 | STATIC void genNewInstance(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 693 | RegLocation rlDest) |
| 694 | { |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 695 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 696 | uint32_t type_idx = mir->dalvikInsn.vB; |
| 697 | // alloc will always check for resolution, do we also need to verify access because the |
| 698 | // verifier was unable to? |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 699 | if (cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 700 | cUnit->dex_cache, |
| 701 | *cUnit->dex_file, |
| 702 | type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 703 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pAllocObjectFromCode), rLR); |
| 704 | } else { |
| 705 | loadWordDisp(cUnit, rSELF, |
| 706 | OFFSETOF_MEMBER(Thread, pAllocObjectFromCodeWithAccessCheck), rLR); |
| 707 | } |
| 708 | loadCurrMethodDirect(cUnit, r1); // arg1 <= Method* |
| 709 | loadConstant(cUnit, r0, type_idx); // arg0 <- type_idx |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 710 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 711 | RegLocation rlResult = oatGetReturn(cUnit); |
| 712 | storeValue(cUnit, rlDest, rlResult); |
| 713 | } |
| 714 | |
| 715 | void genThrow(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc) |
| 716 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 717 | oatFlushAllRegs(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 718 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pDeliverException), rLR); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 719 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get exception object |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 720 | callRuntimeHelper(cUnit, rLR); // art_deliver_exception(exception); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 721 | } |
| 722 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 723 | STATIC void genInstanceof(CompilationUnit* cUnit, MIR* mir, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 724 | RegLocation rlSrc) |
| 725 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 726 | oatFlushAllRegs(cUnit); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 727 | // May generate a call - use explicit registers |
| 728 | oatLockCallTemps(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 729 | uint32_t type_idx = mir->dalvikInsn.vC; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 730 | loadCurrMethodDirect(cUnit, r1); // r1 <= current Method* |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 731 | int classReg = r2; // r2 will hold the Class* |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 732 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 733 | cUnit->dex_cache, |
| 734 | *cUnit->dex_file, |
| 735 | type_idx)) { |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 736 | // Check we have access to type_idx and if not throw IllegalAccessError, |
| 737 | // returns Class* in r0 |
| 738 | loadWordDisp(cUnit, rSELF, |
| 739 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 740 | rLR); |
| 741 | loadConstant(cUnit, r0, type_idx); |
| 742 | callRuntimeHelper(cUnit, rLR); // InitializeTypeAndVerifyAccess(idx, method) |
| 743 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 6a99678 | 2011-10-31 17:06:39 -0700 | [diff] [blame] | 744 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 745 | } else { |
| 746 | // Load dex cache entry into classReg (r2) |
Ian Rogers | 6a99678 | 2011-10-31 17:06:39 -0700 | [diff] [blame] | 747 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 748 | loadWordDisp(cUnit, r1, Method::DexCacheResolvedTypesOffset().Int32Value(), classReg); |
| 749 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 750 | loadWordDisp(cUnit, classReg, offset_of_type, classReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 751 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 752 | // Need to test presence of type in dex cache at runtime |
| 753 | ArmLIR* hopBranch = genCmpImmBranch(cUnit, kArmCondNe, classReg, 0); |
| 754 | // Not resolved |
| 755 | // Call out to helper, which will return resolved type in r0 |
| 756 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 757 | loadConstant(cUnit, r0, type_idx); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 758 | callRuntimeHelper(cUnit, rLR); // InitializeTypeFromCode(idx, method) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 759 | genRegCopy(cUnit, r2, r0); // Align usage with fast path |
| 760 | loadValueDirectFixed(cUnit, rlSrc, r0); /* reload Ref */ |
| 761 | // Rejoin code paths |
| 762 | ArmLIR* hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 763 | hopTarget->defMask = ENCODE_ALL; |
| 764 | hopBranch->generic.target = (LIR*)hopTarget; |
| 765 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 766 | } |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 767 | /* r0 is ref, r2 is class. If ref==null, use directly as bool result */ |
| 768 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, r0, 0); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 769 | /* load object->clazz */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 770 | DCHECK_EQ(Object::ClassOffset().Int32Value(), 0); |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 771 | loadWordDisp(cUnit, r0, Object::ClassOffset().Int32Value(), r1); |
| 772 | /* r0 is ref, r1 is ref->clazz, r2 is class */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 773 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInstanceofNonTrivialFromCode), rLR); |
buzbee | 991e3ac | 2011-09-29 15:44:22 -0700 | [diff] [blame] | 774 | opRegReg(cUnit, kOpCmp, r1, r2); // Same? |
| 775 | genBarrier(cUnit); |
| 776 | genIT(cUnit, kArmCondEq, "EE"); // if-convert the test |
| 777 | loadConstant(cUnit, r0, 1); // .eq case - load true |
| 778 | genRegCopy(cUnit, r0, r2); // .ne case - arg0 <= class |
| 779 | opReg(cUnit, kOpBlx, rLR); // .ne case: helper(class, ref->class) |
| 780 | genBarrier(cUnit); |
| 781 | oatClobberCalleeSave(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 782 | /* branch target here */ |
| 783 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 784 | target->defMask = ENCODE_ALL; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 785 | RegLocation rlResult = oatGetReturn(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 786 | storeValue(cUnit, rlDest, rlResult); |
| 787 | branch1->generic.target = (LIR*)target; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 788 | } |
| 789 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 790 | STATIC void genCheckCast(CompilationUnit* cUnit, MIR* mir, RegLocation rlSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 791 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 792 | oatFlushAllRegs(cUnit); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 793 | // May generate a call - use explicit registers |
| 794 | oatLockCallTemps(cUnit); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 795 | uint32_t type_idx = mir->dalvikInsn.vB; |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 796 | loadCurrMethodDirect(cUnit, r1); // r1 <= current Method* |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 797 | int classReg = r2; // r2 will hold the Class* |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 798 | if (!cUnit->compiler->CanAccessTypeWithoutChecks(cUnit->method_idx, |
| 799 | cUnit->dex_cache, |
| 800 | *cUnit->dex_file, |
| 801 | type_idx)) { |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 802 | // Check we have access to type_idx and if not throw IllegalAccessError, |
| 803 | // returns Class* in r0 |
| 804 | loadWordDisp(cUnit, rSELF, |
| 805 | OFFSETOF_MEMBER(Thread, pInitializeTypeAndVerifyAccessFromCode), |
| 806 | rLR); |
| 807 | loadConstant(cUnit, r0, type_idx); |
| 808 | callRuntimeHelper(cUnit, rLR); // InitializeTypeAndVerifyAccess(idx, method) |
| 809 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 810 | } else { |
| 811 | // Load dex cache entry into classReg (r2) |
| 812 | loadWordDisp(cUnit, r1, Method::DexCacheResolvedTypesOffset().Int32Value(), classReg); |
| 813 | int32_t offset_of_type = Array::DataOffset().Int32Value() + (sizeof(Class*) * type_idx); |
| 814 | loadWordDisp(cUnit, classReg, offset_of_type, classReg); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 815 | if (!cUnit->compiler->CanAssumeTypeIsPresentInDexCache(cUnit->dex_cache, type_idx)) { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 816 | // Need to test presence of type in dex cache at runtime |
| 817 | ArmLIR* hopBranch = genCmpImmBranch(cUnit, kArmCondNe, classReg, 0); |
| 818 | // Not resolved |
| 819 | // Call out to helper, which will return resolved type in r0 |
| 820 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pInitializeTypeFromCode), rLR); |
| 821 | loadConstant(cUnit, r0, type_idx); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 822 | callRuntimeHelper(cUnit, rLR); // InitializeTypeFromCode(idx, method) |
| 823 | genRegCopy(cUnit, classReg, r0); // Align usage with fast path |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 824 | // Rejoin code paths |
| 825 | ArmLIR* hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 826 | hopTarget->defMask = ENCODE_ALL; |
| 827 | hopBranch->generic.target = (LIR*)hopTarget; |
| 828 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 829 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 830 | // At this point, classReg (r2) has class |
| 831 | loadValueDirectFixed(cUnit, rlSrc, r0); // r0 <= ref |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 832 | /* Null is OK - continue */ |
| 833 | ArmLIR* branch1 = genCmpImmBranch(cUnit, kArmCondEq, r0, 0); |
| 834 | /* load object->clazz */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 835 | DCHECK_EQ(Object::ClassOffset().Int32Value(), 0); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 836 | loadWordDisp(cUnit, r0, Object::ClassOffset().Int32Value(), r1); |
| 837 | /* r1 now contains object->clazz */ |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 838 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pCheckCastFromCode), rLR); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 839 | opRegReg(cUnit, kOpCmp, r1, classReg); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 840 | ArmLIR* branch2 = opCondBranch(cUnit, kArmCondEq); /* If equal, trivial yes */ |
| 841 | genRegCopy(cUnit, r0, r1); |
| 842 | genRegCopy(cUnit, r1, r2); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 843 | callRuntimeHelper(cUnit, rLR); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 844 | /* branch target here */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 845 | ArmLIR* target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 846 | target->defMask = ENCODE_ALL; |
| 847 | branch1->generic.target = (LIR*)target; |
| 848 | branch2->generic.target = (LIR*)target; |
| 849 | } |
| 850 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 851 | STATIC void genNegFloat(CompilationUnit* cUnit, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 852 | RegLocation rlSrc) |
| 853 | { |
| 854 | RegLocation rlResult; |
| 855 | rlSrc = loadValue(cUnit, rlSrc, kFPReg); |
| 856 | rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true); |
| 857 | newLIR2(cUnit, kThumb2Vnegs, rlResult.lowReg, rlSrc.lowReg); |
| 858 | storeValue(cUnit, rlDest, rlResult); |
| 859 | } |
| 860 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 861 | STATIC void genNegDouble(CompilationUnit* cUnit, RegLocation rlDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 862 | RegLocation rlSrc) |
| 863 | { |
| 864 | RegLocation rlResult; |
| 865 | rlSrc = loadValueWide(cUnit, rlSrc, kFPReg); |
| 866 | rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true); |
| 867 | newLIR2(cUnit, kThumb2Vnegd, S2D(rlResult.lowReg, rlResult.highReg), |
| 868 | S2D(rlSrc.lowReg, rlSrc.highReg)); |
| 869 | storeValueWide(cUnit, rlDest, rlResult); |
| 870 | } |
| 871 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 872 | STATIC void freeRegLocTemps(CompilationUnit* cUnit, RegLocation rlKeep, |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 873 | RegLocation rlFree) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 874 | { |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 875 | if ((rlFree.lowReg != rlKeep.lowReg) && (rlFree.lowReg != rlKeep.highReg) && |
| 876 | (rlFree.highReg != rlKeep.lowReg) && (rlFree.highReg != rlKeep.highReg)) { |
| 877 | // No overlap, free both |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 878 | oatFreeTemp(cUnit, rlFree.lowReg); |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 879 | oatFreeTemp(cUnit, rlFree.highReg); |
| 880 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 881 | } |
| 882 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 883 | STATIC void genLong3Addr(CompilationUnit* cUnit, MIR* mir, OpKind firstOp, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 884 | OpKind secondOp, RegLocation rlDest, |
| 885 | RegLocation rlSrc1, RegLocation rlSrc2) |
| 886 | { |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 887 | /* |
| 888 | * NOTE: This is the one place in the code in which we might have |
| 889 | * as many as six live temporary registers. There are 5 in the normal |
| 890 | * set for Arm. Until we have spill capabilities, temporarily add |
| 891 | * lr to the temp set. It is safe to do this locally, but note that |
| 892 | * lr is used explicitly elsewhere in the code generator and cannot |
| 893 | * normally be used as a general temp register. |
| 894 | */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 895 | RegLocation rlResult; |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 896 | oatMarkTemp(cUnit, rLR); // Add lr to the temp pool |
| 897 | oatFreeTemp(cUnit, rLR); // and make it available |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 898 | rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg); |
| 899 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 900 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 901 | // The longs may overlap - use intermediate temp if so |
| 902 | if (rlResult.lowReg == rlSrc1.highReg) { |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 903 | int tReg = oatAllocTemp(cUnit); |
| 904 | genRegCopy(cUnit, tReg, rlSrc1.highReg); |
| 905 | opRegRegReg(cUnit, firstOp, rlResult.lowReg, rlSrc1.lowReg, |
| 906 | rlSrc2.lowReg); |
| 907 | opRegRegReg(cUnit, secondOp, rlResult.highReg, tReg, |
| 908 | rlSrc2.highReg); |
| 909 | oatFreeTemp(cUnit, tReg); |
| 910 | } else { |
| 911 | opRegRegReg(cUnit, firstOp, rlResult.lowReg, rlSrc1.lowReg, |
| 912 | rlSrc2.lowReg); |
| 913 | opRegRegReg(cUnit, secondOp, rlResult.highReg, rlSrc1.highReg, |
| 914 | rlSrc2.highReg); |
| 915 | } |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 916 | /* |
| 917 | * NOTE: If rlDest refers to a frame variable in a large frame, the |
| 918 | * following storeValueWide might need to allocate a temp register. |
| 919 | * To further work around the lack of a spill capability, explicitly |
| 920 | * free any temps from rlSrc1 & rlSrc2 that aren't still live in rlResult. |
| 921 | * Remove when spill is functional. |
| 922 | */ |
| 923 | freeRegLocTemps(cUnit, rlResult, rlSrc1); |
| 924 | freeRegLocTemps(cUnit, rlResult, rlSrc2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 925 | storeValueWide(cUnit, rlDest, rlResult); |
buzbee | 9e0f9b0 | 2011-08-24 15:32:46 -0700 | [diff] [blame] | 926 | oatClobber(cUnit, rLR); |
| 927 | oatUnmarkTemp(cUnit, rLR); // Remove lr from the temp pool |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | void oatInitializeRegAlloc(CompilationUnit* cUnit) |
| 931 | { |
| 932 | int numRegs = sizeof(coreRegs)/sizeof(*coreRegs); |
| 933 | int numReserved = sizeof(reservedRegs)/sizeof(*reservedRegs); |
| 934 | int numTemps = sizeof(coreTemps)/sizeof(*coreTemps); |
| 935 | int numFPRegs = sizeof(fpRegs)/sizeof(*fpRegs); |
| 936 | int numFPTemps = sizeof(fpTemps)/sizeof(*fpTemps); |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 937 | RegisterPool *pool = (RegisterPool *)oatNew(sizeof(*pool), true, |
| 938 | kAllocRegAlloc); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 939 | cUnit->regPool = pool; |
| 940 | pool->numCoreRegs = numRegs; |
| 941 | pool->coreRegs = (RegisterInfo *) |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 942 | oatNew(numRegs * sizeof(*cUnit->regPool->coreRegs), true, |
| 943 | kAllocRegAlloc); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 944 | pool->numFPRegs = numFPRegs; |
| 945 | pool->FPRegs = (RegisterInfo *) |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 946 | oatNew(numFPRegs * sizeof(*cUnit->regPool->FPRegs), true, |
| 947 | kAllocRegAlloc); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 948 | oatInitPool(pool->coreRegs, coreRegs, pool->numCoreRegs); |
| 949 | oatInitPool(pool->FPRegs, fpRegs, pool->numFPRegs); |
| 950 | // Keep special registers from being allocated |
| 951 | for (int i = 0; i < numReserved; i++) { |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 952 | if (NO_SUSPEND && (reservedRegs[i] == rSUSPEND)) { |
| 953 | //To measure cost of suspend check |
| 954 | continue; |
| 955 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 956 | oatMarkInUse(cUnit, reservedRegs[i]); |
| 957 | } |
| 958 | // Mark temp regs - all others not in use can be used for promotion |
| 959 | for (int i = 0; i < numTemps; i++) { |
| 960 | oatMarkTemp(cUnit, coreTemps[i]); |
| 961 | } |
| 962 | for (int i = 0; i < numFPTemps; i++) { |
| 963 | oatMarkTemp(cUnit, fpTemps[i]); |
| 964 | } |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 965 | // Construct the alias map. |
| 966 | cUnit->phiAliasMap = (int*)oatNew(cUnit->numSSARegs * |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 967 | sizeof(cUnit->phiAliasMap[0]), false, |
| 968 | kAllocDFInfo); |
buzbee | c0ecd65 | 2011-09-25 18:11:54 -0700 | [diff] [blame] | 969 | for (int i = 0; i < cUnit->numSSARegs; i++) { |
| 970 | cUnit->phiAliasMap[i] = i; |
| 971 | } |
| 972 | for (MIR* phi = cUnit->phiList; phi; phi = phi->meta.phiNext) { |
| 973 | int defReg = phi->ssaRep->defs[0]; |
| 974 | for (int i = 0; i < phi->ssaRep->numUses; i++) { |
| 975 | for (int j = 0; j < cUnit->numSSARegs; j++) { |
| 976 | if (cUnit->phiAliasMap[j] == phi->ssaRep->uses[i]) { |
| 977 | cUnit->phiAliasMap[j] = defReg; |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | /* |
| 985 | * Handle simple case (thin lock) inline. If it's complicated, bail |
| 986 | * out to the heavyweight lock/unlock routines. We'll use dedicated |
| 987 | * registers here in order to be in the right position in case we |
| 988 | * to bail to dvm[Lock/Unlock]Object(self, object) |
| 989 | * |
| 990 | * r0 -> self pointer [arg0 for dvm[Lock/Unlock]Object |
| 991 | * r1 -> object [arg1 for dvm[Lock/Unlock]Object |
| 992 | * r2 -> intial contents of object->lock, later result of strex |
| 993 | * r3 -> self->threadId |
| 994 | * r12 -> allow to be used by utilities as general temp |
| 995 | * |
| 996 | * The result of the strex is 0 if we acquire the lock. |
| 997 | * |
| 998 | * See comments in Sync.c for the layout of the lock word. |
| 999 | * Of particular interest to this code is the test for the |
| 1000 | * simple case - which we handle inline. For monitor enter, the |
| 1001 | * simple case is thin lock, held by no-one. For monitor exit, |
| 1002 | * the simple case is thin lock, held by the unlocking thread with |
| 1003 | * a recurse count of 0. |
| 1004 | * |
| 1005 | * A minor complication is that there is a field in the lock word |
| 1006 | * unrelated to locking: the hash state. This field must be ignored, but |
| 1007 | * preserved. |
| 1008 | * |
| 1009 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1010 | STATIC void genMonitorEnter(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1011 | RegLocation rlSrc) |
| 1012 | { |
| 1013 | ArmLIR* target; |
| 1014 | ArmLIR* hopTarget; |
| 1015 | ArmLIR* branch; |
| 1016 | ArmLIR* hopBranch; |
| 1017 | |
| 1018 | oatFlushAllRegs(cUnit); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1019 | DCHECK_EQ(LW_SHAPE_THIN, 0); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1020 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get obj |
buzbee | 2e748f3 | 2011-08-29 21:02:19 -0700 | [diff] [blame] | 1021 | oatLockCallTemps(cUnit); // Prepare for explicit register usage |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1022 | genNullCheck(cUnit, rlSrc.sRegLow, r0, mir); |
| 1023 | loadWordDisp(cUnit, rSELF, Thread::ThinLockIdOffset().Int32Value(), r2); |
| 1024 | newLIR3(cUnit, kThumb2Ldrex, r1, r0, |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1025 | Object::MonitorOffset().Int32Value() >> 2); // Get object->lock |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1026 | // Align owner |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1027 | opRegImm(cUnit, kOpLsl, r2, LW_LOCK_OWNER_SHIFT); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1028 | // Is lock unheld on lock or held by us (==threadId) on unlock? |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1029 | newLIR4(cUnit, kThumb2Bfi, r2, r1, 0, LW_LOCK_OWNER_SHIFT - 1); |
| 1030 | newLIR3(cUnit, kThumb2Bfc, r1, LW_HASH_STATE_SHIFT, LW_LOCK_OWNER_SHIFT - 1); |
| 1031 | hopBranch = newLIR2(cUnit, kThumb2Cbnz, r1, 0); |
| 1032 | newLIR4(cUnit, kThumb2Strex, r1, r2, r0, |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1033 | Object::MonitorOffset().Int32Value() >> 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1034 | oatGenMemBarrier(cUnit, kSY); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1035 | branch = newLIR2(cUnit, kThumb2Cbz, r1, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1036 | |
| 1037 | hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1038 | hopTarget->defMask = ENCODE_ALL; |
| 1039 | hopBranch->generic.target = (LIR*)hopTarget; |
| 1040 | |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1041 | // Go expensive route - artLockObjectFromCode(self, obj); |
| 1042 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pLockObjectFromCode), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1043 | rLR); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1044 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1045 | |
| 1046 | // Resume here |
| 1047 | target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1048 | target->defMask = ENCODE_ALL; |
| 1049 | branch->generic.target = (LIR*)target; |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * For monitor unlock, we don't have to use ldrex/strex. Once |
| 1054 | * we've determined that the lock is thin and that we own it with |
| 1055 | * a zero recursion count, it's safe to punch it back to the |
| 1056 | * initial, unlock thin state with a store word. |
| 1057 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1058 | STATIC void genMonitorExit(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1059 | RegLocation rlSrc) |
| 1060 | { |
| 1061 | ArmLIR* target; |
| 1062 | ArmLIR* branch; |
| 1063 | ArmLIR* hopTarget; |
| 1064 | ArmLIR* hopBranch; |
| 1065 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1066 | DCHECK_EQ(LW_SHAPE_THIN, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1067 | oatFlushAllRegs(cUnit); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1068 | loadValueDirectFixed(cUnit, rlSrc, r0); // Get obj |
buzbee | 2e748f3 | 2011-08-29 21:02:19 -0700 | [diff] [blame] | 1069 | oatLockCallTemps(cUnit); // Prepare for explicit register usage |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1070 | genNullCheck(cUnit, rlSrc.sRegLow, r0, mir); |
| 1071 | loadWordDisp(cUnit, r0, Object::MonitorOffset().Int32Value(), r1); // Get lock |
| 1072 | loadWordDisp(cUnit, rSELF, Thread::ThinLockIdOffset().Int32Value(), r2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1073 | // Is lock unheld on lock or held by us (==threadId) on unlock? |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1074 | opRegRegImm(cUnit, kOpAnd, r3, r1, (LW_HASH_STATE_MASK << LW_HASH_STATE_SHIFT)); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1075 | // Align owner |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1076 | opRegImm(cUnit, kOpLsl, r2, LW_LOCK_OWNER_SHIFT); |
| 1077 | newLIR3(cUnit, kThumb2Bfc, r1, LW_HASH_STATE_SHIFT, LW_LOCK_OWNER_SHIFT - 1); |
| 1078 | opRegReg(cUnit, kOpSub, r1, r2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1079 | hopBranch = opCondBranch(cUnit, kArmCondNe); |
| 1080 | oatGenMemBarrier(cUnit, kSY); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1081 | storeWordDisp(cUnit, r0, Object::MonitorOffset().Int32Value(), r3); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1082 | branch = opNone(cUnit, kOpUncondBr); |
| 1083 | |
| 1084 | hopTarget = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1085 | hopTarget->defMask = ENCODE_ALL; |
| 1086 | hopBranch->generic.target = (LIR*)hopTarget; |
| 1087 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 1088 | // Go expensive route - UnlockObjectFromCode(obj); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1089 | loadWordDisp(cUnit, rSELF, OFFSETOF_MEMBER(Thread, pUnlockObjectFromCode), |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1090 | rLR); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1091 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1092 | |
| 1093 | // Resume here |
| 1094 | target = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1095 | target->defMask = ENCODE_ALL; |
| 1096 | branch->generic.target = (LIR*)target; |
| 1097 | } |
| 1098 | |
| 1099 | /* |
| 1100 | * 64-bit 3way compare function. |
| 1101 | * mov rX, #-1 |
| 1102 | * cmp op1hi, op2hi |
| 1103 | * blt done |
| 1104 | * bgt flip |
| 1105 | * sub rX, op1lo, op2lo (treat as unsigned) |
| 1106 | * beq done |
| 1107 | * ite hi |
| 1108 | * mov(hi) rX, #-1 |
| 1109 | * mov(!hi) rX, #1 |
| 1110 | * flip: |
| 1111 | * neg rX |
| 1112 | * done: |
| 1113 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1114 | STATIC void genCmpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1115 | RegLocation rlDest, RegLocation rlSrc1, |
| 1116 | RegLocation rlSrc2) |
| 1117 | { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1118 | ArmLIR* target1; |
| 1119 | ArmLIR* target2; |
| 1120 | rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg); |
| 1121 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1122 | int tReg = oatAllocTemp(cUnit); |
| 1123 | loadConstant(cUnit, tReg, -1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1124 | opRegReg(cUnit, kOpCmp, rlSrc1.highReg, rlSrc2.highReg); |
| 1125 | ArmLIR* branch1 = opCondBranch(cUnit, kArmCondLt); |
| 1126 | ArmLIR* branch2 = opCondBranch(cUnit, kArmCondGt); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1127 | opRegRegReg(cUnit, kOpSub, tReg, rlSrc1.lowReg, rlSrc2.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1128 | ArmLIR* branch3 = opCondBranch(cUnit, kArmCondEq); |
| 1129 | |
| 1130 | genIT(cUnit, kArmCondHi, "E"); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1131 | newLIR2(cUnit, kThumb2MovImmShift, tReg, modifiedImmediate(-1)); |
| 1132 | loadConstant(cUnit, tReg, 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1133 | genBarrier(cUnit); |
| 1134 | |
| 1135 | target2 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1136 | target2->defMask = -1; |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1137 | opRegReg(cUnit, kOpNeg, tReg, tReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1138 | |
| 1139 | target1 = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1140 | target1->defMask = -1; |
| 1141 | |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1142 | RegLocation rlTemp = LOC_C_RETURN; // Just using as template, will change |
| 1143 | rlTemp.lowReg = tReg; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1144 | storeValue(cUnit, rlDest, rlTemp); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1145 | oatFreeTemp(cUnit, tReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1146 | |
| 1147 | branch1->generic.target = (LIR*)target1; |
| 1148 | branch2->generic.target = (LIR*)target2; |
| 1149 | branch3->generic.target = branch1->generic.target; |
| 1150 | } |
| 1151 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1152 | STATIC void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1153 | RegLocation rlSrc, RegLocation rlResult, int lit, |
| 1154 | int firstBit, int secondBit) |
| 1155 | { |
| 1156 | opRegRegRegShift(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, rlSrc.lowReg, |
| 1157 | encodeShift(kArmLsl, secondBit - firstBit)); |
| 1158 | if (firstBit != 0) { |
| 1159 | opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit); |
| 1160 | } |
| 1161 | } |
| 1162 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1163 | STATIC bool genConversionCall(CompilationUnit* cUnit, MIR* mir, int funcOffset, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1164 | int srcSize, int tgtSize) |
| 1165 | { |
| 1166 | /* |
| 1167 | * Don't optimize the register usage since it calls out to support |
| 1168 | * functions |
| 1169 | */ |
| 1170 | RegLocation rlSrc; |
| 1171 | RegLocation rlDest; |
| 1172 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1173 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1174 | if (srcSize == 1) { |
| 1175 | rlSrc = oatGetSrc(cUnit, mir, 0); |
| 1176 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 1177 | } else { |
| 1178 | rlSrc = oatGetSrcWide(cUnit, mir, 0, 1); |
| 1179 | loadValueDirectWideFixed(cUnit, rlSrc, r0, r1); |
| 1180 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1181 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1182 | if (tgtSize == 1) { |
| 1183 | RegLocation rlResult; |
| 1184 | rlDest = oatGetDest(cUnit, mir, 0); |
| 1185 | rlResult = oatGetReturn(cUnit); |
| 1186 | storeValue(cUnit, rlDest, rlResult); |
| 1187 | } else { |
| 1188 | RegLocation rlResult; |
| 1189 | rlDest = oatGetDestWide(cUnit, mir, 0, 1); |
| 1190 | rlResult = oatGetReturnWide(cUnit); |
| 1191 | storeValueWide(cUnit, rlDest, rlResult); |
| 1192 | } |
| 1193 | return false; |
| 1194 | } |
| 1195 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1196 | STATIC bool genArithOpFloatPortable(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1197 | RegLocation rlDest, RegLocation rlSrc1, |
| 1198 | RegLocation rlSrc2) |
| 1199 | { |
| 1200 | RegLocation rlResult; |
| 1201 | int funcOffset; |
| 1202 | |
| 1203 | switch (mir->dalvikInsn.opcode) { |
| 1204 | case OP_ADD_FLOAT_2ADDR: |
| 1205 | case OP_ADD_FLOAT: |
| 1206 | funcOffset = OFFSETOF_MEMBER(Thread, pFadd); |
| 1207 | break; |
| 1208 | case OP_SUB_FLOAT_2ADDR: |
| 1209 | case OP_SUB_FLOAT: |
| 1210 | funcOffset = OFFSETOF_MEMBER(Thread, pFsub); |
| 1211 | break; |
| 1212 | case OP_DIV_FLOAT_2ADDR: |
| 1213 | case OP_DIV_FLOAT: |
| 1214 | funcOffset = OFFSETOF_MEMBER(Thread, pFdiv); |
| 1215 | break; |
| 1216 | case OP_MUL_FLOAT_2ADDR: |
| 1217 | case OP_MUL_FLOAT: |
| 1218 | funcOffset = OFFSETOF_MEMBER(Thread, pFmul); |
| 1219 | break; |
| 1220 | case OP_REM_FLOAT_2ADDR: |
| 1221 | case OP_REM_FLOAT: |
| 1222 | funcOffset = OFFSETOF_MEMBER(Thread, pFmodf); |
| 1223 | break; |
| 1224 | case OP_NEG_FLOAT: { |
| 1225 | genNegFloat(cUnit, rlDest, rlSrc1); |
| 1226 | return false; |
| 1227 | } |
| 1228 | default: |
| 1229 | return true; |
| 1230 | } |
| 1231 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1232 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1233 | loadValueDirectFixed(cUnit, rlSrc1, r0); |
| 1234 | loadValueDirectFixed(cUnit, rlSrc2, r1); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1235 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1236 | rlResult = oatGetReturn(cUnit); |
| 1237 | storeValue(cUnit, rlDest, rlResult); |
| 1238 | return false; |
| 1239 | } |
| 1240 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1241 | STATIC bool genArithOpDoublePortable(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1242 | RegLocation rlDest, RegLocation rlSrc1, |
| 1243 | RegLocation rlSrc2) |
| 1244 | { |
| 1245 | RegLocation rlResult; |
| 1246 | int funcOffset; |
| 1247 | |
| 1248 | switch (mir->dalvikInsn.opcode) { |
| 1249 | case OP_ADD_DOUBLE_2ADDR: |
| 1250 | case OP_ADD_DOUBLE: |
| 1251 | funcOffset = OFFSETOF_MEMBER(Thread, pDadd); |
| 1252 | break; |
| 1253 | case OP_SUB_DOUBLE_2ADDR: |
| 1254 | case OP_SUB_DOUBLE: |
| 1255 | funcOffset = OFFSETOF_MEMBER(Thread, pDsub); |
| 1256 | break; |
| 1257 | case OP_DIV_DOUBLE_2ADDR: |
| 1258 | case OP_DIV_DOUBLE: |
| 1259 | funcOffset = OFFSETOF_MEMBER(Thread, pDdiv); |
| 1260 | break; |
| 1261 | case OP_MUL_DOUBLE_2ADDR: |
| 1262 | case OP_MUL_DOUBLE: |
| 1263 | funcOffset = OFFSETOF_MEMBER(Thread, pDmul); |
| 1264 | break; |
| 1265 | case OP_REM_DOUBLE_2ADDR: |
| 1266 | case OP_REM_DOUBLE: |
| 1267 | funcOffset = OFFSETOF_MEMBER(Thread, pFmod); |
| 1268 | break; |
| 1269 | case OP_NEG_DOUBLE: { |
| 1270 | genNegDouble(cUnit, rlDest, rlSrc1); |
| 1271 | return false; |
| 1272 | } |
| 1273 | default: |
| 1274 | return true; |
| 1275 | } |
| 1276 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1277 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1278 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1279 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1280 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1281 | rlResult = oatGetReturnWide(cUnit); |
| 1282 | storeValueWide(cUnit, rlDest, rlResult); |
| 1283 | return false; |
| 1284 | } |
| 1285 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1286 | STATIC bool genConversionPortable(CompilationUnit* cUnit, MIR* mir) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1287 | { |
| 1288 | Opcode opcode = mir->dalvikInsn.opcode; |
| 1289 | |
| 1290 | switch (opcode) { |
| 1291 | case OP_INT_TO_FLOAT: |
| 1292 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pI2f), |
| 1293 | 1, 1); |
| 1294 | case OP_FLOAT_TO_INT: |
| 1295 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pF2iz), |
| 1296 | 1, 1); |
| 1297 | case OP_DOUBLE_TO_FLOAT: |
| 1298 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pD2f), |
| 1299 | 2, 1); |
| 1300 | case OP_FLOAT_TO_DOUBLE: |
| 1301 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pF2d), |
| 1302 | 1, 2); |
| 1303 | case OP_INT_TO_DOUBLE: |
| 1304 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pI2d), |
| 1305 | 1, 2); |
| 1306 | case OP_DOUBLE_TO_INT: |
| 1307 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pD2iz), |
| 1308 | 2, 1); |
| 1309 | case OP_FLOAT_TO_LONG: |
| 1310 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1311 | pF2l), 1, 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1312 | case OP_LONG_TO_FLOAT: |
| 1313 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pL2f), |
| 1314 | 2, 1); |
| 1315 | case OP_DOUBLE_TO_LONG: |
| 1316 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1317 | pD2l), 2, 2); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1318 | case OP_LONG_TO_DOUBLE: |
| 1319 | return genConversionCall(cUnit, mir, OFFSETOF_MEMBER(Thread, pL2d), |
| 1320 | 2, 2); |
| 1321 | default: |
| 1322 | return true; |
| 1323 | } |
| 1324 | return false; |
| 1325 | } |
| 1326 | |
| 1327 | /* Generate conditional branch instructions */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1328 | STATIC ArmLIR* genConditionalBranch(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1329 | ArmConditionCode cond, |
| 1330 | ArmLIR* target) |
| 1331 | { |
| 1332 | ArmLIR* branch = opCondBranch(cUnit, cond); |
| 1333 | branch->generic.target = (LIR*) target; |
| 1334 | return branch; |
| 1335 | } |
| 1336 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1337 | /* |
| 1338 | * Generate array store |
| 1339 | * |
| 1340 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1341 | STATIC void genArrayObjPut(CompilationUnit* cUnit, MIR* mir, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1342 | RegLocation rlArray, RegLocation rlIndex, |
| 1343 | RegLocation rlSrc, int scale) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1344 | { |
| 1345 | RegisterClass regClass = oatRegClassBySize(kWord); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1346 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1347 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1348 | |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1349 | oatFlushAllRegs(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1350 | /* Make sure it's a legal object Put. Use direct regs at first */ |
| 1351 | loadValueDirectFixed(cUnit, rlArray, r1); |
| 1352 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 1353 | |
| 1354 | /* null array object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1355 | genNullCheck(cUnit, rlArray.sRegLow, r1, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1356 | loadWordDisp(cUnit, rSELF, |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 1357 | OFFSETOF_MEMBER(Thread, pCanPutArrayElementFromCode), rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1358 | /* Get the array's clazz */ |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1359 | loadWordDisp(cUnit, r1, Object::ClassOffset().Int32Value(), r1); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1360 | callRuntimeHelper(cUnit, rLR); |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1361 | oatFreeTemp(cUnit, r0); |
| 1362 | oatFreeTemp(cUnit, r1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1363 | |
| 1364 | // Now, redo loadValues in case they didn't survive the call |
| 1365 | |
| 1366 | int regPtr; |
| 1367 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1368 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1369 | |
| 1370 | if (oatIsTemp(cUnit, rlArray.lowReg)) { |
| 1371 | oatClobber(cUnit, rlArray.lowReg); |
| 1372 | regPtr = rlArray.lowReg; |
| 1373 | } else { |
| 1374 | regPtr = oatAllocTemp(cUnit); |
| 1375 | genRegCopy(cUnit, regPtr, rlArray.lowReg); |
| 1376 | } |
| 1377 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1378 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1379 | int regLen = oatAllocTemp(cUnit); |
| 1380 | //NOTE: max live temps(4) here. |
| 1381 | /* Get len */ |
| 1382 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1383 | /* regPtr -> array data */ |
| 1384 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1385 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1386 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1387 | oatFreeTemp(cUnit, regLen); |
| 1388 | } else { |
| 1389 | /* regPtr -> array data */ |
| 1390 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
| 1391 | } |
| 1392 | /* at this point, regPtr points to array, 2 live temps */ |
| 1393 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
| 1394 | storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg, |
| 1395 | scale, kWord); |
| 1396 | } |
| 1397 | |
| 1398 | /* |
| 1399 | * Generate array load |
| 1400 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1401 | STATIC void genArrayGet(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1402 | RegLocation rlArray, RegLocation rlIndex, |
| 1403 | RegLocation rlDest, int scale) |
| 1404 | { |
| 1405 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1406 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1407 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1408 | RegLocation rlResult; |
| 1409 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1410 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1411 | int regPtr; |
| 1412 | |
| 1413 | /* null object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1414 | genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1415 | |
| 1416 | regPtr = oatAllocTemp(cUnit); |
| 1417 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1418 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1419 | int regLen = oatAllocTemp(cUnit); |
| 1420 | /* Get len */ |
| 1421 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1422 | /* regPtr -> array data */ |
| 1423 | opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1424 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1425 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1426 | oatFreeTemp(cUnit, regLen); |
| 1427 | } else { |
| 1428 | /* regPtr -> array data */ |
| 1429 | opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset); |
| 1430 | } |
buzbee | e9a72f6 | 2011-09-04 17:59:07 -0700 | [diff] [blame] | 1431 | oatFreeTemp(cUnit, rlArray.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1432 | if ((size == kLong) || (size == kDouble)) { |
| 1433 | if (scale) { |
| 1434 | int rNewIndex = oatAllocTemp(cUnit); |
| 1435 | opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale); |
| 1436 | opRegReg(cUnit, kOpAdd, regPtr, rNewIndex); |
| 1437 | oatFreeTemp(cUnit, rNewIndex); |
| 1438 | } else { |
| 1439 | opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg); |
| 1440 | } |
buzbee | e9a72f6 | 2011-09-04 17:59:07 -0700 | [diff] [blame] | 1441 | oatFreeTemp(cUnit, rlIndex.lowReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1442 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
| 1443 | |
| 1444 | loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg); |
| 1445 | |
| 1446 | oatFreeTemp(cUnit, regPtr); |
| 1447 | storeValueWide(cUnit, rlDest, rlResult); |
| 1448 | } else { |
| 1449 | rlResult = oatEvalLoc(cUnit, rlDest, regClass, true); |
| 1450 | |
| 1451 | loadBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlResult.lowReg, |
| 1452 | scale, size); |
| 1453 | |
| 1454 | oatFreeTemp(cUnit, regPtr); |
| 1455 | storeValue(cUnit, rlDest, rlResult); |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | /* |
| 1460 | * Generate array store |
| 1461 | * |
| 1462 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1463 | STATIC void genArrayPut(CompilationUnit* cUnit, MIR* mir, OpSize size, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1464 | RegLocation rlArray, RegLocation rlIndex, |
| 1465 | RegLocation rlSrc, int scale) |
| 1466 | { |
| 1467 | RegisterClass regClass = oatRegClassBySize(size); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 1468 | int lenOffset = Array::LengthOffset().Int32Value(); |
| 1469 | int dataOffset = Array::DataOffset().Int32Value(); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1470 | |
| 1471 | int regPtr; |
| 1472 | rlArray = loadValue(cUnit, rlArray, kCoreReg); |
| 1473 | rlIndex = loadValue(cUnit, rlIndex, kCoreReg); |
| 1474 | |
| 1475 | if (oatIsTemp(cUnit, rlArray.lowReg)) { |
| 1476 | oatClobber(cUnit, rlArray.lowReg); |
| 1477 | regPtr = rlArray.lowReg; |
| 1478 | } else { |
| 1479 | regPtr = oatAllocTemp(cUnit); |
| 1480 | genRegCopy(cUnit, regPtr, rlArray.lowReg); |
| 1481 | } |
| 1482 | |
| 1483 | /* null object? */ |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1484 | genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, mir); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1485 | |
buzbee | 43a3642 | 2011-09-14 14:00:13 -0700 | [diff] [blame] | 1486 | if (!(mir->optimizationFlags & MIR_IGNORE_RANGE_CHECK)) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1487 | int regLen = oatAllocTemp(cUnit); |
| 1488 | //NOTE: max live temps(4) here. |
| 1489 | /* Get len */ |
| 1490 | loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); |
| 1491 | /* regPtr -> array data */ |
| 1492 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
buzbee | ec5adf3 | 2011-09-11 15:25:43 -0700 | [diff] [blame] | 1493 | genRegRegCheck(cUnit, kArmCondCs, rlIndex.lowReg, regLen, mir, |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1494 | kArmThrowArrayBounds); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1495 | oatFreeTemp(cUnit, regLen); |
| 1496 | } else { |
| 1497 | /* regPtr -> array data */ |
| 1498 | opRegImm(cUnit, kOpAdd, regPtr, dataOffset); |
| 1499 | } |
| 1500 | /* at this point, regPtr points to array, 2 live temps */ |
| 1501 | if ((size == kLong) || (size == kDouble)) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1502 | //TUNING: specific wide routine that can handle fp regs |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1503 | if (scale) { |
| 1504 | int rNewIndex = oatAllocTemp(cUnit); |
| 1505 | opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale); |
| 1506 | opRegReg(cUnit, kOpAdd, regPtr, rNewIndex); |
| 1507 | oatFreeTemp(cUnit, rNewIndex); |
| 1508 | } else { |
| 1509 | opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg); |
| 1510 | } |
| 1511 | rlSrc = loadValueWide(cUnit, rlSrc, regClass); |
| 1512 | |
| 1513 | storePair(cUnit, regPtr, rlSrc.lowReg, rlSrc.highReg); |
| 1514 | |
| 1515 | oatFreeTemp(cUnit, regPtr); |
| 1516 | } else { |
| 1517 | rlSrc = loadValue(cUnit, rlSrc, regClass); |
| 1518 | |
| 1519 | storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg, |
| 1520 | scale, size); |
| 1521 | } |
| 1522 | } |
| 1523 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1524 | STATIC bool genShiftOpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1525 | RegLocation rlDest, RegLocation rlSrc1, |
| 1526 | RegLocation rlShift) |
| 1527 | { |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1528 | int funcOffset; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1529 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1530 | switch( mir->dalvikInsn.opcode) { |
| 1531 | case OP_SHL_LONG: |
| 1532 | case OP_SHL_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1533 | funcOffset = OFFSETOF_MEMBER(Thread, pShlLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1534 | break; |
| 1535 | case OP_SHR_LONG: |
| 1536 | case OP_SHR_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1537 | funcOffset = OFFSETOF_MEMBER(Thread, pShrLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1538 | break; |
| 1539 | case OP_USHR_LONG: |
| 1540 | case OP_USHR_LONG_2ADDR: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1541 | funcOffset = OFFSETOF_MEMBER(Thread, pUshrLong); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1542 | break; |
| 1543 | default: |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1544 | LOG(FATAL) << "Unexpected case"; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1545 | return true; |
| 1546 | } |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1547 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1548 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1549 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1550 | loadValueDirect(cUnit, rlShift, r2); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1551 | callRuntimeHelper(cUnit, rLR); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 1552 | RegLocation rlResult = oatGetReturnWide(cUnit); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1553 | storeValueWide(cUnit, rlDest, rlResult); |
| 1554 | return false; |
| 1555 | } |
| 1556 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1557 | STATIC bool genArithOpLong(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1558 | RegLocation rlDest, RegLocation rlSrc1, |
| 1559 | RegLocation rlSrc2) |
| 1560 | { |
| 1561 | RegLocation rlResult; |
| 1562 | OpKind firstOp = kOpBkpt; |
| 1563 | OpKind secondOp = kOpBkpt; |
| 1564 | bool callOut = false; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1565 | bool checkZero = false; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1566 | int funcOffset; |
| 1567 | int retReg = r0; |
| 1568 | |
| 1569 | switch (mir->dalvikInsn.opcode) { |
| 1570 | case OP_NOT_LONG: |
| 1571 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 1572 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1573 | // Check for destructive overlap |
| 1574 | if (rlResult.lowReg == rlSrc2.highReg) { |
| 1575 | int tReg = oatAllocTemp(cUnit); |
| 1576 | genRegCopy(cUnit, tReg, rlSrc2.highReg); |
| 1577 | opRegReg(cUnit, kOpMvn, rlResult.lowReg, rlSrc2.lowReg); |
| 1578 | opRegReg(cUnit, kOpMvn, rlResult.highReg, tReg); |
| 1579 | oatFreeTemp(cUnit, tReg); |
| 1580 | } else { |
| 1581 | opRegReg(cUnit, kOpMvn, rlResult.lowReg, rlSrc2.lowReg); |
| 1582 | opRegReg(cUnit, kOpMvn, rlResult.highReg, rlSrc2.highReg); |
| 1583 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1584 | storeValueWide(cUnit, rlDest, rlResult); |
| 1585 | return false; |
| 1586 | break; |
| 1587 | case OP_ADD_LONG: |
| 1588 | case OP_ADD_LONG_2ADDR: |
| 1589 | firstOp = kOpAdd; |
| 1590 | secondOp = kOpAdc; |
| 1591 | break; |
| 1592 | case OP_SUB_LONG: |
| 1593 | case OP_SUB_LONG_2ADDR: |
| 1594 | firstOp = kOpSub; |
| 1595 | secondOp = kOpSbc; |
| 1596 | break; |
| 1597 | case OP_MUL_LONG: |
| 1598 | case OP_MUL_LONG_2ADDR: |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 1599 | callOut = true; |
| 1600 | retReg = r0; |
| 1601 | funcOffset = OFFSETOF_MEMBER(Thread, pLmul); |
| 1602 | break; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1603 | case OP_DIV_LONG: |
| 1604 | case OP_DIV_LONG_2ADDR: |
| 1605 | callOut = true; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1606 | checkZero = true; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1607 | retReg = r0; |
| 1608 | funcOffset = OFFSETOF_MEMBER(Thread, pLdivmod); |
| 1609 | break; |
| 1610 | /* NOTE - result is in r2/r3 instead of r0/r1 */ |
| 1611 | case OP_REM_LONG: |
| 1612 | case OP_REM_LONG_2ADDR: |
| 1613 | callOut = true; |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1614 | checkZero = true; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1615 | funcOffset = OFFSETOF_MEMBER(Thread, pLdivmod); |
| 1616 | retReg = r2; |
| 1617 | break; |
| 1618 | case OP_AND_LONG_2ADDR: |
| 1619 | case OP_AND_LONG: |
| 1620 | firstOp = kOpAnd; |
| 1621 | secondOp = kOpAnd; |
| 1622 | break; |
| 1623 | case OP_OR_LONG: |
| 1624 | case OP_OR_LONG_2ADDR: |
| 1625 | firstOp = kOpOr; |
| 1626 | secondOp = kOpOr; |
| 1627 | break; |
| 1628 | case OP_XOR_LONG: |
| 1629 | case OP_XOR_LONG_2ADDR: |
| 1630 | firstOp = kOpXor; |
| 1631 | secondOp = kOpXor; |
| 1632 | break; |
| 1633 | case OP_NEG_LONG: { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1634 | rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg); |
| 1635 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
buzbee | b29e4d1 | 2011-09-26 15:05:48 -0700 | [diff] [blame] | 1636 | int zReg = oatAllocTemp(cUnit); |
| 1637 | loadConstantNoClobber(cUnit, zReg, 0); |
| 1638 | // Check for destructive overlap |
| 1639 | if (rlResult.lowReg == rlSrc2.highReg) { |
| 1640 | int tReg = oatAllocTemp(cUnit); |
| 1641 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1642 | zReg, rlSrc2.lowReg); |
| 1643 | opRegRegReg(cUnit, kOpSbc, rlResult.highReg, |
| 1644 | zReg, tReg); |
| 1645 | oatFreeTemp(cUnit, tReg); |
| 1646 | } else { |
| 1647 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1648 | zReg, rlSrc2.lowReg); |
| 1649 | opRegRegReg(cUnit, kOpSbc, rlResult.highReg, |
| 1650 | zReg, rlSrc2.highReg); |
| 1651 | } |
| 1652 | oatFreeTemp(cUnit, zReg); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1653 | storeValueWide(cUnit, rlDest, rlResult); |
| 1654 | return false; |
| 1655 | } |
| 1656 | default: |
| 1657 | LOG(FATAL) << "Invalid long arith op"; |
| 1658 | } |
| 1659 | if (!callOut) { |
| 1660 | genLong3Addr(cUnit, mir, firstOp, secondOp, rlDest, rlSrc1, rlSrc2); |
| 1661 | } else { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1662 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1663 | if (checkZero) { |
| 1664 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
| 1665 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1666 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1667 | int tReg = oatAllocTemp(cUnit); |
| 1668 | newLIR4(cUnit, kThumb2OrrRRRs, tReg, r2, r3, 0); |
| 1669 | oatFreeTemp(cUnit, tReg); |
| 1670 | genCheck(cUnit, kArmCondEq, mir, kArmThrowDivZero); |
| 1671 | } else { |
| 1672 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1673 | loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1); |
| 1674 | loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3); |
| 1675 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1676 | callRuntimeHelper(cUnit, rLR); |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 1677 | // Adjust return regs in to handle case of rem returning r2/r3 |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1678 | if (retReg == r0) |
| 1679 | rlResult = oatGetReturnWide(cUnit); |
| 1680 | else |
| 1681 | rlResult = oatGetReturnWideAlt(cUnit); |
| 1682 | storeValueWide(cUnit, rlDest, rlResult); |
| 1683 | } |
| 1684 | return false; |
| 1685 | } |
| 1686 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1687 | STATIC bool genArithOpInt(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1688 | RegLocation rlDest, RegLocation rlSrc1, |
| 1689 | RegLocation rlSrc2) |
| 1690 | { |
| 1691 | OpKind op = kOpBkpt; |
| 1692 | bool callOut = false; |
| 1693 | bool checkZero = false; |
| 1694 | bool unary = false; |
| 1695 | int retReg = r0; |
| 1696 | int funcOffset; |
| 1697 | RegLocation rlResult; |
| 1698 | bool shiftOp = false; |
| 1699 | |
| 1700 | switch (mir->dalvikInsn.opcode) { |
| 1701 | case OP_NEG_INT: |
| 1702 | op = kOpNeg; |
| 1703 | unary = true; |
| 1704 | break; |
| 1705 | case OP_NOT_INT: |
| 1706 | op = kOpMvn; |
| 1707 | unary = true; |
| 1708 | break; |
| 1709 | case OP_ADD_INT: |
| 1710 | case OP_ADD_INT_2ADDR: |
| 1711 | op = kOpAdd; |
| 1712 | break; |
| 1713 | case OP_SUB_INT: |
| 1714 | case OP_SUB_INT_2ADDR: |
| 1715 | op = kOpSub; |
| 1716 | break; |
| 1717 | case OP_MUL_INT: |
| 1718 | case OP_MUL_INT_2ADDR: |
| 1719 | op = kOpMul; |
| 1720 | break; |
| 1721 | case OP_DIV_INT: |
| 1722 | case OP_DIV_INT_2ADDR: |
| 1723 | callOut = true; |
| 1724 | checkZero = true; |
| 1725 | funcOffset = OFFSETOF_MEMBER(Thread, pIdiv); |
| 1726 | retReg = r0; |
| 1727 | break; |
| 1728 | /* NOTE: returns in r1 */ |
| 1729 | case OP_REM_INT: |
| 1730 | case OP_REM_INT_2ADDR: |
| 1731 | callOut = true; |
| 1732 | checkZero = true; |
| 1733 | funcOffset = OFFSETOF_MEMBER(Thread, pIdivmod); |
| 1734 | retReg = r1; |
| 1735 | break; |
| 1736 | case OP_AND_INT: |
| 1737 | case OP_AND_INT_2ADDR: |
| 1738 | op = kOpAnd; |
| 1739 | break; |
| 1740 | case OP_OR_INT: |
| 1741 | case OP_OR_INT_2ADDR: |
| 1742 | op = kOpOr; |
| 1743 | break; |
| 1744 | case OP_XOR_INT: |
| 1745 | case OP_XOR_INT_2ADDR: |
| 1746 | op = kOpXor; |
| 1747 | break; |
| 1748 | case OP_SHL_INT: |
| 1749 | case OP_SHL_INT_2ADDR: |
| 1750 | shiftOp = true; |
| 1751 | op = kOpLsl; |
| 1752 | break; |
| 1753 | case OP_SHR_INT: |
| 1754 | case OP_SHR_INT_2ADDR: |
| 1755 | shiftOp = true; |
| 1756 | op = kOpAsr; |
| 1757 | break; |
| 1758 | case OP_USHR_INT: |
| 1759 | case OP_USHR_INT_2ADDR: |
| 1760 | shiftOp = true; |
| 1761 | op = kOpLsr; |
| 1762 | break; |
| 1763 | default: |
| 1764 | LOG(FATAL) << "Invalid word arith op: " << |
| 1765 | (int)mir->dalvikInsn.opcode; |
| 1766 | } |
| 1767 | if (!callOut) { |
| 1768 | rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg); |
| 1769 | if (unary) { |
| 1770 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1771 | opRegReg(cUnit, op, rlResult.lowReg, |
| 1772 | rlSrc1.lowReg); |
| 1773 | } else { |
| 1774 | rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg); |
| 1775 | if (shiftOp) { |
| 1776 | int tReg = oatAllocTemp(cUnit); |
| 1777 | opRegRegImm(cUnit, kOpAnd, tReg, rlSrc2.lowReg, 31); |
| 1778 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1779 | opRegRegReg(cUnit, op, rlResult.lowReg, |
| 1780 | rlSrc1.lowReg, tReg); |
| 1781 | oatFreeTemp(cUnit, tReg); |
| 1782 | } else { |
| 1783 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1784 | opRegRegReg(cUnit, op, rlResult.lowReg, |
| 1785 | rlSrc1.lowReg, rlSrc2.lowReg); |
| 1786 | } |
| 1787 | } |
| 1788 | storeValue(cUnit, rlDest, rlResult); |
| 1789 | } else { |
| 1790 | RegLocation rlResult; |
| 1791 | oatFlushAllRegs(cUnit); /* Send everything to home location */ |
| 1792 | loadValueDirectFixed(cUnit, rlSrc2, r1); |
| 1793 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 1794 | loadValueDirectFixed(cUnit, rlSrc1, r0); |
| 1795 | if (checkZero) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1796 | genImmedCheck(cUnit, kArmCondEq, r1, 0, mir, kArmThrowDivZero); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1797 | } |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1798 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1799 | if (retReg == r0) |
| 1800 | rlResult = oatGetReturn(cUnit); |
| 1801 | else |
| 1802 | rlResult = oatGetReturnAlt(cUnit); |
| 1803 | storeValue(cUnit, rlDest, rlResult); |
| 1804 | } |
| 1805 | return false; |
| 1806 | } |
| 1807 | |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1808 | /* Check if we need to check for pending suspend request */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1809 | STATIC void genSuspendTest(CompilationUnit* cUnit, MIR* mir) |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1810 | { |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 1811 | if (NO_SUSPEND || (mir->optimizationFlags & MIR_IGNORE_SUSPEND_CHECK)) { |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1812 | return; |
| 1813 | } |
buzbee | 6181f79 | 2011-09-29 11:14:04 -0700 | [diff] [blame] | 1814 | oatFlushAllRegs(cUnit); |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1815 | newLIR2(cUnit, kThumbSubRI8, rSUSPEND, 1); |
| 1816 | ArmLIR* branch = opCondBranch(cUnit, kArmCondEq); |
| 1817 | ArmLIR* retLab = newLIR0(cUnit, kArmPseudoTargetLabel); |
| 1818 | retLab->defMask = ENCODE_ALL; |
buzbee | 5abfa3e | 2012-01-31 17:01:43 -0800 | [diff] [blame^] | 1819 | ArmLIR* target = (ArmLIR*)oatNew(sizeof(ArmLIR), true, kAllocLIR); |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 1820 | target->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 1821 | target->opcode = kArmPseudoSuspendTarget; |
| 1822 | target->operands[0] = (intptr_t)retLab; |
| 1823 | target->operands[1] = mir->offset; |
| 1824 | branch->generic.target = (LIR*)target; |
| 1825 | oatInsertGrowableList(&cUnit->suspendLaunchpads, (intptr_t)target); |
| 1826 | } |
| 1827 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1828 | /* |
| 1829 | * The following are the first-level codegen routines that analyze the format |
| 1830 | * of each bytecode then either dispatch special purpose codegen routines |
| 1831 | * or produce corresponding Thumb instructions directly. |
| 1832 | */ |
| 1833 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1834 | STATIC bool isPowerOfTwo(int x) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1835 | { |
| 1836 | return (x & (x - 1)) == 0; |
| 1837 | } |
| 1838 | |
| 1839 | // Returns true if no more than two bits are set in 'x'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1840 | STATIC bool isPopCountLE2(unsigned int x) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1841 | { |
| 1842 | x &= x - 1; |
| 1843 | return (x & (x - 1)) == 0; |
| 1844 | } |
| 1845 | |
| 1846 | // Returns the index of the lowest set bit in 'x'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1847 | STATIC int lowestSetBit(unsigned int x) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1848 | int bit_posn = 0; |
| 1849 | while ((x & 0xf) == 0) { |
| 1850 | bit_posn += 4; |
| 1851 | x >>= 4; |
| 1852 | } |
| 1853 | while ((x & 1) == 0) { |
| 1854 | bit_posn++; |
| 1855 | x >>= 1; |
| 1856 | } |
| 1857 | return bit_posn; |
| 1858 | } |
| 1859 | |
| 1860 | // Returns true if it added instructions to 'cUnit' to divide 'rlSrc' by 'lit' |
| 1861 | // and store the result in 'rlDest'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1862 | STATIC bool handleEasyDivide(CompilationUnit* cUnit, Opcode dalvikOpcode, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1863 | RegLocation rlSrc, RegLocation rlDest, int lit) |
| 1864 | { |
| 1865 | if (lit < 2 || !isPowerOfTwo(lit)) { |
| 1866 | return false; |
| 1867 | } |
| 1868 | int k = lowestSetBit(lit); |
| 1869 | if (k >= 30) { |
| 1870 | // Avoid special cases. |
| 1871 | return false; |
| 1872 | } |
| 1873 | bool div = (dalvikOpcode == OP_DIV_INT_LIT8 || |
| 1874 | dalvikOpcode == OP_DIV_INT_LIT16); |
| 1875 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1876 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1877 | if (div) { |
| 1878 | int tReg = oatAllocTemp(cUnit); |
| 1879 | if (lit == 2) { |
| 1880 | // Division by 2 is by far the most common division by constant. |
| 1881 | opRegRegImm(cUnit, kOpLsr, tReg, rlSrc.lowReg, 32 - k); |
| 1882 | opRegRegReg(cUnit, kOpAdd, tReg, tReg, rlSrc.lowReg); |
| 1883 | opRegRegImm(cUnit, kOpAsr, rlResult.lowReg, tReg, k); |
| 1884 | } else { |
| 1885 | opRegRegImm(cUnit, kOpAsr, tReg, rlSrc.lowReg, 31); |
| 1886 | opRegRegImm(cUnit, kOpLsr, tReg, tReg, 32 - k); |
| 1887 | opRegRegReg(cUnit, kOpAdd, tReg, tReg, rlSrc.lowReg); |
| 1888 | opRegRegImm(cUnit, kOpAsr, rlResult.lowReg, tReg, k); |
| 1889 | } |
| 1890 | } else { |
| 1891 | int cReg = oatAllocTemp(cUnit); |
| 1892 | loadConstant(cUnit, cReg, lit - 1); |
| 1893 | int tReg1 = oatAllocTemp(cUnit); |
| 1894 | int tReg2 = oatAllocTemp(cUnit); |
| 1895 | if (lit == 2) { |
| 1896 | opRegRegImm(cUnit, kOpLsr, tReg1, rlSrc.lowReg, 32 - k); |
| 1897 | opRegRegReg(cUnit, kOpAdd, tReg2, tReg1, rlSrc.lowReg); |
| 1898 | opRegRegReg(cUnit, kOpAnd, tReg2, tReg2, cReg); |
| 1899 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg2, tReg1); |
| 1900 | } else { |
| 1901 | opRegRegImm(cUnit, kOpAsr, tReg1, rlSrc.lowReg, 31); |
| 1902 | opRegRegImm(cUnit, kOpLsr, tReg1, tReg1, 32 - k); |
| 1903 | opRegRegReg(cUnit, kOpAdd, tReg2, tReg1, rlSrc.lowReg); |
| 1904 | opRegRegReg(cUnit, kOpAnd, tReg2, tReg2, cReg); |
| 1905 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg2, tReg1); |
| 1906 | } |
| 1907 | } |
| 1908 | storeValue(cUnit, rlDest, rlResult); |
| 1909 | return true; |
| 1910 | } |
| 1911 | |
| 1912 | // Returns true if it added instructions to 'cUnit' to multiply 'rlSrc' by 'lit' |
| 1913 | // and store the result in 'rlDest'. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1914 | STATIC bool handleEasyMultiply(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1915 | RegLocation rlSrc, RegLocation rlDest, int lit) |
| 1916 | { |
| 1917 | // Can we simplify this multiplication? |
| 1918 | bool powerOfTwo = false; |
| 1919 | bool popCountLE2 = false; |
| 1920 | bool powerOfTwoMinusOne = false; |
| 1921 | if (lit < 2) { |
| 1922 | // Avoid special cases. |
| 1923 | return false; |
| 1924 | } else if (isPowerOfTwo(lit)) { |
| 1925 | powerOfTwo = true; |
| 1926 | } else if (isPopCountLE2(lit)) { |
| 1927 | popCountLE2 = true; |
| 1928 | } else if (isPowerOfTwo(lit + 1)) { |
| 1929 | powerOfTwoMinusOne = true; |
| 1930 | } else { |
| 1931 | return false; |
| 1932 | } |
| 1933 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1934 | RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1935 | if (powerOfTwo) { |
| 1936 | // Shift. |
| 1937 | opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlSrc.lowReg, |
| 1938 | lowestSetBit(lit)); |
| 1939 | } else if (popCountLE2) { |
| 1940 | // Shift and add and shift. |
| 1941 | int firstBit = lowestSetBit(lit); |
| 1942 | int secondBit = lowestSetBit(lit ^ (1 << firstBit)); |
| 1943 | genMultiplyByTwoBitMultiplier(cUnit, rlSrc, rlResult, lit, |
| 1944 | firstBit, secondBit); |
| 1945 | } else { |
| 1946 | // Reverse subtract: (src << (shift + 1)) - src. |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1947 | DCHECK(powerOfTwoMinusOne); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 1948 | // TUNING: rsb dst, src, src lsl#lowestSetBit(lit + 1) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1949 | int tReg = oatAllocTemp(cUnit); |
| 1950 | opRegRegImm(cUnit, kOpLsl, tReg, rlSrc.lowReg, lowestSetBit(lit + 1)); |
| 1951 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, tReg, rlSrc.lowReg); |
| 1952 | } |
| 1953 | storeValue(cUnit, rlDest, rlResult); |
| 1954 | return true; |
| 1955 | } |
| 1956 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1957 | STATIC bool genArithOpIntLit(CompilationUnit* cUnit, MIR* mir, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1958 | RegLocation rlDest, RegLocation rlSrc, |
| 1959 | int lit) |
| 1960 | { |
| 1961 | Opcode dalvikOpcode = mir->dalvikInsn.opcode; |
| 1962 | RegLocation rlResult; |
| 1963 | OpKind op = (OpKind)0; /* Make gcc happy */ |
| 1964 | int shiftOp = false; |
| 1965 | bool isDiv = false; |
| 1966 | int funcOffset; |
| 1967 | |
| 1968 | switch (dalvikOpcode) { |
| 1969 | case OP_RSUB_INT_LIT8: |
| 1970 | case OP_RSUB_INT: { |
| 1971 | int tReg; |
| 1972 | //TUNING: add support for use of Arm rsub op |
| 1973 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 1974 | tReg = oatAllocTemp(cUnit); |
| 1975 | loadConstant(cUnit, tReg, lit); |
| 1976 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 1977 | opRegRegReg(cUnit, kOpSub, rlResult.lowReg, |
| 1978 | tReg, rlSrc.lowReg); |
| 1979 | storeValue(cUnit, rlDest, rlResult); |
| 1980 | return false; |
| 1981 | break; |
| 1982 | } |
| 1983 | |
| 1984 | case OP_ADD_INT_LIT8: |
| 1985 | case OP_ADD_INT_LIT16: |
| 1986 | op = kOpAdd; |
| 1987 | break; |
| 1988 | case OP_MUL_INT_LIT8: |
| 1989 | case OP_MUL_INT_LIT16: { |
| 1990 | if (handleEasyMultiply(cUnit, rlSrc, rlDest, lit)) { |
| 1991 | return false; |
| 1992 | } |
| 1993 | op = kOpMul; |
| 1994 | break; |
| 1995 | } |
| 1996 | case OP_AND_INT_LIT8: |
| 1997 | case OP_AND_INT_LIT16: |
| 1998 | op = kOpAnd; |
| 1999 | break; |
| 2000 | case OP_OR_INT_LIT8: |
| 2001 | case OP_OR_INT_LIT16: |
| 2002 | op = kOpOr; |
| 2003 | break; |
| 2004 | case OP_XOR_INT_LIT8: |
| 2005 | case OP_XOR_INT_LIT16: |
| 2006 | op = kOpXor; |
| 2007 | break; |
| 2008 | case OP_SHL_INT_LIT8: |
| 2009 | lit &= 31; |
| 2010 | shiftOp = true; |
| 2011 | op = kOpLsl; |
| 2012 | break; |
| 2013 | case OP_SHR_INT_LIT8: |
| 2014 | lit &= 31; |
| 2015 | shiftOp = true; |
| 2016 | op = kOpAsr; |
| 2017 | break; |
| 2018 | case OP_USHR_INT_LIT8: |
| 2019 | lit &= 31; |
| 2020 | shiftOp = true; |
| 2021 | op = kOpLsr; |
| 2022 | break; |
| 2023 | |
| 2024 | case OP_DIV_INT_LIT8: |
| 2025 | case OP_DIV_INT_LIT16: |
| 2026 | case OP_REM_INT_LIT8: |
| 2027 | case OP_REM_INT_LIT16: |
| 2028 | if (lit == 0) { |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 2029 | genImmedCheck(cUnit, kArmCondAl, 0, 0, mir, kArmThrowDivZero); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2030 | return false; |
| 2031 | } |
| 2032 | if (handleEasyDivide(cUnit, dalvikOpcode, rlSrc, rlDest, lit)) { |
| 2033 | return false; |
| 2034 | } |
| 2035 | oatFlushAllRegs(cUnit); /* Everything to home location */ |
| 2036 | loadValueDirectFixed(cUnit, rlSrc, r0); |
| 2037 | oatClobber(cUnit, r0); |
| 2038 | if ((dalvikOpcode == OP_DIV_INT_LIT8) || |
| 2039 | (dalvikOpcode == OP_DIV_INT_LIT16)) { |
| 2040 | funcOffset = OFFSETOF_MEMBER(Thread, pIdiv); |
| 2041 | isDiv = true; |
| 2042 | } else { |
| 2043 | funcOffset = OFFSETOF_MEMBER(Thread, pIdivmod); |
| 2044 | isDiv = false; |
| 2045 | } |
| 2046 | loadWordDisp(cUnit, rSELF, funcOffset, rLR); |
| 2047 | loadConstant(cUnit, r1, lit); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 2048 | callRuntimeHelper(cUnit, rLR); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2049 | if (isDiv) |
| 2050 | rlResult = oatGetReturn(cUnit); |
| 2051 | else |
| 2052 | rlResult = oatGetReturnAlt(cUnit); |
| 2053 | storeValue(cUnit, rlDest, rlResult); |
| 2054 | return false; |
| 2055 | break; |
| 2056 | default: |
| 2057 | return true; |
| 2058 | } |
| 2059 | rlSrc = loadValue(cUnit, rlSrc, kCoreReg); |
| 2060 | rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true); |
| 2061 | // Avoid shifts by literal 0 - no support in Thumb. Change to copy |
| 2062 | if (shiftOp && (lit == 0)) { |
| 2063 | genRegCopy(cUnit, rlResult.lowReg, rlSrc.lowReg); |
| 2064 | } else { |
| 2065 | opRegRegImm(cUnit, op, rlResult.lowReg, rlSrc.lowReg, lit); |
| 2066 | } |
| 2067 | storeValue(cUnit, rlDest, rlResult); |
| 2068 | return false; |
| 2069 | } |
| 2070 | |
| 2071 | /* Architectural-specific debugging helpers go here */ |
| 2072 | void oatArchDump(void) |
| 2073 | { |
| 2074 | /* Print compiled opcode in this VM instance */ |
| 2075 | int i, start, streak; |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2076 | std::string buf; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2077 | |
| 2078 | streak = i = 0; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2079 | while (opcodeCoverage[i] == 0 && i < kNumPackedOpcodes) { |
| 2080 | i++; |
| 2081 | } |
| 2082 | if (i == kNumPackedOpcodes) { |
| 2083 | return; |
| 2084 | } |
| 2085 | for (start = i++, streak = 1; i < kNumPackedOpcodes; i++) { |
| 2086 | if (opcodeCoverage[i]) { |
| 2087 | streak++; |
| 2088 | } else { |
| 2089 | if (streak == 1) { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2090 | StringAppendF(&buf, "%x,", start); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2091 | } else { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2092 | StringAppendF(&buf, "%x-%x,", start, start + streak - 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2093 | } |
| 2094 | streak = 0; |
| 2095 | while (opcodeCoverage[i] == 0 && i < kNumPackedOpcodes) { |
| 2096 | i++; |
| 2097 | } |
| 2098 | if (i < kNumPackedOpcodes) { |
| 2099 | streak = 1; |
| 2100 | start = i; |
| 2101 | } |
| 2102 | } |
| 2103 | } |
| 2104 | if (streak) { |
| 2105 | if (streak == 1) { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2106 | StringAppendF(&buf, "%x", start); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2107 | } else { |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2108 | StringAppendF(&buf, "%x-%x", start, start + streak - 1); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2109 | } |
| 2110 | } |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 2111 | if (!buf.empty()) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 2112 | LOG(INFO) << "dalvik.vm.oat.op = " << buf; |
| 2113 | } |
| 2114 | } |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame] | 2115 | |
| 2116 | } // namespace art |