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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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1451 | 1451 |
1452 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { | 1452 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { |
1453 // ----------- S t a t e ------------- | 1453 // ----------- S t a t e ------------- |
1454 // -- r3 : argument count (preserved for callee) | 1454 // -- r3 : argument count (preserved for callee) |
1455 // -- r4 : new target (preserved for callee) | 1455 // -- r4 : new target (preserved for callee) |
1456 // -- r6 : target function (preserved for callee) | 1456 // -- r6 : target function (preserved for callee) |
1457 // ----------------------------------- | 1457 // ----------------------------------- |
1458 Label failed; | 1458 Label failed; |
1459 { | 1459 { |
1460 FrameScope scope(masm, StackFrame::INTERNAL); | 1460 FrameScope scope(masm, StackFrame::INTERNAL); |
| 1461 // Preserve argument count for later compare. |
| 1462 __ Move(r5, r3); |
1461 // Push a copy of the target function and the new target. | 1463 // Push a copy of the target function and the new target. |
1462 // Push function as parameter to the runtime call. | 1464 // Push function as parameter to the runtime call. |
1463 __ SmiTag(r3); | 1465 __ SmiTag(r3); |
1464 __ Push(r3, r4, r6, r4); | 1466 __ Push(r3, r4, r6, r4); |
1465 | 1467 |
1466 // Copy arguments from caller (stdlib, foreign, heap). | 1468 // Copy arguments from caller (stdlib, foreign, heap). |
| 1469 Label args_done; |
| 1470 __ cmpi(r5, Operand(0)); |
| 1471 __ B(eq, &args_done); |
| 1472 |
| 1473 Label args2; |
| 1474 __ cmpi(r5, Operand(1)); |
| 1475 __ B(ne, &args2); |
| 1476 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1477 0 * kPointerSize)); |
| 1478 __ push(r5); |
| 1479 __ jmp(&args_done); |
| 1480 |
| 1481 __ bind(&args2); |
| 1482 Label args3; |
| 1483 __ cmp(r5, Operand(2)); |
| 1484 __ B(ne, &args3); |
| 1485 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1486 1 * kPointerSize)); |
| 1487 __ push(r5); |
| 1488 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1489 0 * kPointerSize)); |
| 1490 __ push(r5); |
| 1491 __ jmp(&args_done); |
| 1492 |
| 1493 __ bind(&args3); |
| 1494 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1495 2 * kPointerSize)); |
| 1496 __ push(r5); |
| 1497 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1498 1 * kPointerSize)); |
| 1499 __ push(r5); |
| 1500 __ LoadP(r5, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1501 0 * kPointerSize)); |
| 1502 __ push(r5); |
| 1503 __ bind(&args_done); |
| 1504 |
| 1505 // Increment and restore argument count to call runtime method |
| 1506 // with function as extra argument. |
| 1507 __ add(r5, r5, Operand(1)); |
| 1508 __ Move(r3, r5); |
1467 for (int i = 2; i >= 0; --i) { | 1509 for (int i = 2; i >= 0; --i) { |
1468 __ LoadP(r4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + | 1510 __ LoadP(r4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
1469 i * kPointerSize)); | 1511 i * kPointerSize)); |
1470 __ push(r4); | 1512 __ push(r4); |
1471 } | 1513 } |
1472 // Call runtime, on success unwind frame, and parent frame. | 1514 // Call runtime, on success unwind frame, and parent frame. |
1473 __ CallRuntime(Runtime::kInstantiateAsmJs, 4); | 1515 __ CallRuntime(Runtime::kInstantiateAsmJs, -1); |
1474 // A smi 0 is returned on failure, an object on success. | 1516 // A smi 0 is returned on failure, an object on success. |
1475 __ JumpIfSmi(r3, &failed); | 1517 __ JumpIfSmi(r3, &failed); |
1476 scope.GenerateLeaveFrame(); | 1518 scope.GenerateLeaveFrame(); |
1477 __ Drop(4); | 1519 __ Drop(4); |
1478 __ Ret(); | 1520 __ Ret(); |
1479 | 1521 |
1480 __ bind(&failed); | 1522 __ bind(&failed); |
1481 // Restore target function and new target. | 1523 // Restore target function and new target. |
1482 __ Pop(r3, r4, r6); | 1524 __ Pop(r3, r4, r6); |
1483 __ SmiUntag(r3); | 1525 __ SmiUntag(r3); |
1484 } | 1526 } |
1485 // On failure, tail call back to regular js. | 1527 // On failure, tail call back to regular js. |
1486 GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy); | 1528 GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline); |
1487 } | 1529 } |
1488 | 1530 |
1489 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { | 1531 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
1490 // For now, we are relying on the fact that make_code_young doesn't do any | 1532 // For now, we are relying on the fact that make_code_young doesn't do any |
1491 // garbage collection which allows us to save/restore the registers without | 1533 // garbage collection which allows us to save/restore the registers without |
1492 // worrying about which of them contain pointers. We also don't build an | 1534 // worrying about which of them contain pointers. We also don't build an |
1493 // internal frame to make the code faster, since we shouldn't have to do stack | 1535 // internal frame to make the code faster, since we shouldn't have to do stack |
1494 // crawls in MakeCodeYoung. This seems a bit fragile. | 1536 // crawls in MakeCodeYoung. This seems a bit fragile. |
1495 | 1537 |
1496 // Point r3 at the start of the PlatformCodeAge sequence. | 1538 // Point r3 at the start of the PlatformCodeAge sequence. |
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3002 __ CallRuntime(Runtime::kThrowStackOverflow); | 3044 __ CallRuntime(Runtime::kThrowStackOverflow); |
3003 __ bkpt(0); | 3045 __ bkpt(0); |
3004 } | 3046 } |
3005 } | 3047 } |
3006 | 3048 |
3007 #undef __ | 3049 #undef __ |
3008 } // namespace internal | 3050 } // namespace internal |
3009 } // namespace v8 | 3051 } // namespace v8 |
3010 | 3052 |
3011 #endif // V8_TARGET_ARCH_PPC | 3053 #endif // V8_TARGET_ARCH_PPC |
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