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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_PPC | 5 #if V8_TARGET_ARCH_PPC |
6 | 6 |
7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
8 #include "src/debug/debug.h" | 8 #include "src/debug/debug.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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1354 // -- r4 : target function (preserved for callee) | 1354 // -- r4 : target function (preserved for callee) |
1355 // ----------------------------------- | 1355 // ----------------------------------- |
1356 // First lookup code, maybe we don't need to compile! | 1356 // First lookup code, maybe we don't need to compile! |
1357 Label gotta_call_runtime; | 1357 Label gotta_call_runtime; |
1358 Label try_shared; | 1358 Label try_shared; |
1359 Label loop_top, loop_bottom; | 1359 Label loop_top, loop_bottom; |
1360 | 1360 |
1361 Register closure = r4; | 1361 Register closure = r4; |
1362 Register map = r9; | 1362 Register map = r9; |
1363 Register index = r5; | 1363 Register index = r5; |
| 1364 |
| 1365 // Do we have a valid feedback vector? |
| 1366 __ LoadP(index, FieldMemOperand(closure, JSFunction::kLiteralsOffset)); |
| 1367 __ LoadP(index, FieldMemOperand(index, LiteralsArray::kFeedbackVectorOffset)); |
| 1368 __ JumpIfRoot(index, Heap::kUndefinedValueRootIndex, &gotta_call_runtime); |
| 1369 |
1364 __ LoadP(map, | 1370 __ LoadP(map, |
1365 FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset)); | 1371 FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset)); |
1366 __ LoadP(map, | 1372 __ LoadP(map, |
1367 FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset)); | 1373 FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset)); |
1368 __ LoadP(index, FieldMemOperand(map, FixedArray::kLengthOffset)); | 1374 __ LoadP(index, FieldMemOperand(map, FixedArray::kLengthOffset)); |
1369 __ CmpSmiLiteral(index, Smi::FromInt(2), r0); | 1375 __ CmpSmiLiteral(index, Smi::FromInt(2), r0); |
1370 __ blt(&gotta_call_runtime); | 1376 __ blt(&gotta_call_runtime); |
1371 | 1377 |
1372 // Find literals. | |
1373 // r10 : native context | 1378 // r10 : native context |
1374 // r5 : length / index | 1379 // r5 : length / index |
1375 // r9 : optimized code map | 1380 // r9 : optimized code map |
1376 // r6 : new target | 1381 // r6 : new target |
1377 // r4 : closure | 1382 // r4 : closure |
1378 Register native_context = r10; | 1383 Register native_context = r10; |
1379 __ LoadP(native_context, NativeContextMemOperand()); | 1384 __ LoadP(native_context, NativeContextMemOperand()); |
1380 | 1385 |
1381 __ bind(&loop_top); | 1386 __ bind(&loop_top); |
1382 Register temp = r11; | 1387 Register temp = r11; |
1383 Register array_pointer = r8; | 1388 Register array_pointer = r8; |
1384 | 1389 |
1385 // Does the native context match? | 1390 // Does the native context match? |
1386 __ SmiToPtrArrayOffset(array_pointer, index); | 1391 __ SmiToPtrArrayOffset(array_pointer, index); |
1387 __ add(array_pointer, map, array_pointer); | 1392 __ add(array_pointer, map, array_pointer); |
1388 __ LoadP(temp, FieldMemOperand(array_pointer, | 1393 __ LoadP(temp, FieldMemOperand(array_pointer, |
1389 SharedFunctionInfo::kOffsetToPreviousContext)); | 1394 SharedFunctionInfo::kOffsetToPreviousContext)); |
1390 __ LoadP(temp, FieldMemOperand(temp, WeakCell::kValueOffset)); | 1395 __ LoadP(temp, FieldMemOperand(temp, WeakCell::kValueOffset)); |
1391 __ cmp(temp, native_context); | 1396 __ cmp(temp, native_context); |
1392 __ bne(&loop_bottom); | 1397 __ bne(&loop_bottom); |
1393 // Literals available? | |
1394 __ LoadP(temp, | |
1395 FieldMemOperand(array_pointer, | |
1396 SharedFunctionInfo::kOffsetToPreviousLiterals)); | |
1397 __ LoadP(temp, FieldMemOperand(temp, WeakCell::kValueOffset)); | |
1398 __ JumpIfSmi(temp, &gotta_call_runtime); | |
1399 | |
1400 // Save the literals in the closure. | |
1401 __ StoreP(temp, FieldMemOperand(closure, JSFunction::kLiteralsOffset), r0); | |
1402 __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, r7, | |
1403 kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET, | |
1404 OMIT_SMI_CHECK); | |
1405 | 1398 |
1406 // Code available? | 1399 // Code available? |
1407 Register entry = r7; | 1400 Register entry = r7; |
1408 __ LoadP(entry, | 1401 __ LoadP(entry, |
1409 FieldMemOperand(array_pointer, | 1402 FieldMemOperand(array_pointer, |
1410 SharedFunctionInfo::kOffsetToPreviousCachedCode)); | 1403 SharedFunctionInfo::kOffsetToPreviousCachedCode)); |
1411 __ LoadP(entry, FieldMemOperand(entry, WeakCell::kValueOffset)); | 1404 __ LoadP(entry, FieldMemOperand(entry, WeakCell::kValueOffset)); |
1412 __ JumpIfSmi(entry, &try_shared); | 1405 __ JumpIfSmi(entry, &try_shared); |
1413 | 1406 |
1414 // Found literals and code. Get them into the closure and return. | 1407 // Found code. Get it into the closure and return. |
1415 // Store code entry in the closure. | 1408 // Store code entry in the closure. |
1416 __ addi(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag)); | 1409 __ addi(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag)); |
1417 __ StoreP(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset), r0); | 1410 __ StoreP(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset), r0); |
1418 __ RecordWriteCodeEntryField(closure, entry, r8); | 1411 __ RecordWriteCodeEntryField(closure, entry, r8); |
1419 | 1412 |
1420 // Link the closure into the optimized function list. | 1413 // Link the closure into the optimized function list. |
1421 // r7 : code entry | 1414 // r7 : code entry |
1422 // r10: native context | 1415 // r10: native context |
1423 // r4 : closure | 1416 // r4 : closure |
1424 __ LoadP( | 1417 __ LoadP( |
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1438 __ RecordWriteContextSlot(native_context, function_list_offset, r8, temp, | 1431 __ RecordWriteContextSlot(native_context, function_list_offset, r8, temp, |
1439 kLRHasNotBeenSaved, kDontSaveFPRegs); | 1432 kLRHasNotBeenSaved, kDontSaveFPRegs); |
1440 __ JumpToJSEntry(entry); | 1433 __ JumpToJSEntry(entry); |
1441 | 1434 |
1442 __ bind(&loop_bottom); | 1435 __ bind(&loop_bottom); |
1443 __ SubSmiLiteral(index, index, Smi::FromInt(SharedFunctionInfo::kEntryLength), | 1436 __ SubSmiLiteral(index, index, Smi::FromInt(SharedFunctionInfo::kEntryLength), |
1444 r0); | 1437 r0); |
1445 __ CmpSmiLiteral(index, Smi::FromInt(1), r0); | 1438 __ CmpSmiLiteral(index, Smi::FromInt(1), r0); |
1446 __ bgt(&loop_top); | 1439 __ bgt(&loop_top); |
1447 | 1440 |
1448 // We found neither literals nor code. | 1441 // We found no code. |
1449 __ b(&gotta_call_runtime); | 1442 __ b(&gotta_call_runtime); |
1450 | 1443 |
1451 __ bind(&try_shared); | 1444 __ bind(&try_shared); |
1452 __ LoadP(entry, | 1445 __ LoadP(entry, |
1453 FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset)); | 1446 FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset)); |
1454 // Is the shared function marked for tier up? | 1447 // Is the shared function marked for tier up? |
1455 __ lbz(r8, FieldMemOperand(entry, | 1448 __ lbz(r8, FieldMemOperand(entry, |
1456 SharedFunctionInfo::kMarkedForTierUpByteOffset)); | 1449 SharedFunctionInfo::kMarkedForTierUpByteOffset)); |
1457 __ TestBit(r8, SharedFunctionInfo::kMarkedForTierUpBitWithinByte, r0); | 1450 __ TestBit(r8, SharedFunctionInfo::kMarkedForTierUpBitWithinByte, r0); |
1458 __ bne(&gotta_call_runtime, cr0); | 1451 __ bne(&gotta_call_runtime, cr0); |
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2972 __ CallRuntime(Runtime::kThrowStackOverflow); | 2965 __ CallRuntime(Runtime::kThrowStackOverflow); |
2973 __ bkpt(0); | 2966 __ bkpt(0); |
2974 } | 2967 } |
2975 } | 2968 } |
2976 | 2969 |
2977 #undef __ | 2970 #undef __ |
2978 } // namespace internal | 2971 } // namespace internal |
2979 } // namespace v8 | 2972 } // namespace v8 |
2980 | 2973 |
2981 #endif // V8_TARGET_ARCH_PPC | 2974 #endif // V8_TARGET_ARCH_PPC |
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