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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
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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1437 | 1437 |
1438 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { | 1438 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { |
1439 // ----------- S t a t e ------------- | 1439 // ----------- S t a t e ------------- |
1440 // -- a0 : argument count (preserved for callee) | 1440 // -- a0 : argument count (preserved for callee) |
1441 // -- a1 : new target (preserved for callee) | 1441 // -- a1 : new target (preserved for callee) |
1442 // -- a3 : target function (preserved for callee) | 1442 // -- a3 : target function (preserved for callee) |
1443 // ----------------------------------- | 1443 // ----------------------------------- |
1444 Label failed; | 1444 Label failed; |
1445 { | 1445 { |
1446 FrameScope scope(masm, StackFrame::INTERNAL); | 1446 FrameScope scope(masm, StackFrame::INTERNAL); |
| 1447 // Preserve argument count for later compare. |
| 1448 __ Move(s4, a0); |
1447 // Push a copy of the target function and the new target. | 1449 // Push a copy of the target function and the new target. |
1448 // Push function as parameter to the runtime call. | 1450 // Push function as parameter to the runtime call. |
1449 __ SmiTag(a0); | 1451 __ SmiTag(a0); |
1450 __ Push(a0, a1, a3, a1); | 1452 __ Push(a0, a1, a3, a1); |
1451 | 1453 |
1452 // Copy arguments from caller (stdlib, foreign, heap). | 1454 // Copy arguments from caller (stdlib, foreign, heap). |
1453 for (int i = 2; i >= 0; --i) { | 1455 Label args_done; |
1454 __ lw(a3, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + | 1456 __ Branch(&args_done, eq, s4, Operand(0)); |
1455 i * kPointerSize)); | 1457 |
1456 __ push(a3); | 1458 Label args2; |
1457 } | 1459 __ Branch(&args2, ne, s4, Operand(1)); |
| 1460 __ lw(a3, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1461 0 * kPointerSize)); |
| 1462 __ push(a3); |
| 1463 __ jmp(&args_done); |
| 1464 |
| 1465 __ bind(&args2); |
| 1466 Label args3; |
| 1467 __ Branch(&args3, ne, s4, Operand(2)); |
| 1468 __ lw(a3, MemOperand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1469 1 * kPointerSize)); |
| 1470 __ push(a3); |
| 1471 __ lw(a3, Operand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1472 0 * kPointerSize)); |
| 1473 __ push(a3); |
| 1474 __ jmp(&args_done); |
| 1475 |
| 1476 __ bind(&args3); |
| 1477 __ lw(a3, Operand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1478 2 * kPointerSize)); |
| 1479 __ push(a3); |
| 1480 __ lw(a3, Operand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1481 1 * kPointerSize)); |
| 1482 __ push(a3); |
| 1483 __ lw(a3, Operand(fp, StandardFrameConstants::kCallerSPOffset + |
| 1484 0 * kPointerSize)); |
| 1485 __ push(a3); |
| 1486 __ bind(&args_done); |
| 1487 // Increment and restore argument count to call runtime method |
| 1488 // with function as extra argument. |
| 1489 __ Addu(s4, s4, Operand(1)); |
| 1490 __ Move(a0, s4); |
1458 // Call runtime, on success unwind frame, and parent frame. | 1491 // Call runtime, on success unwind frame, and parent frame. |
1459 __ CallRuntime(Runtime::kInstantiateAsmJs, 4); | 1492 __ CallRuntime(Runtime::kInstantiateAsmJs, 4); |
1460 // A smi 0 is returned on failure, an object on success. | 1493 // A smi 0 is returned on failure, an object on success. |
1461 __ JumpIfSmi(a0, &failed); | 1494 __ JumpIfSmi(a0, &failed); |
| 1495 |
| 1496 __ pop(s4); |
| 1497 __ pop(s4); |
| 1498 __ pop(s4); |
| 1499 __ SmiUntag(s4); |
| 1500 |
1462 scope.GenerateLeaveFrame(); | 1501 scope.GenerateLeaveFrame(); |
1463 __ Drop(4); | 1502 |
| 1503 __ pop(s3); |
| 1504 __ Addu(s4, s4, Operand(1)); |
| 1505 __ Lsa(sp, sp, s4, kPointerSizeLog2); |
| 1506 __ push(s3); |
1464 __ Ret(); | 1507 __ Ret(); |
1465 | 1508 |
1466 __ bind(&failed); | 1509 __ bind(&failed); |
1467 // Restore target function and new target. | 1510 // Restore target function and new target. |
1468 __ Pop(a0, a1, a3); | 1511 __ Pop(a0, a1, a3); |
1469 __ SmiUntag(a0); | 1512 __ SmiUntag(a0); |
1470 } | 1513 } |
1471 // On failure, tail call back to regular js. | 1514 // On failure, tail call back to regular js. |
1472 GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy); | 1515 GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline); |
1473 } | 1516 } |
1474 | 1517 |
1475 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { | 1518 static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
1476 // For now, we are relying on the fact that make_code_young doesn't do any | 1519 // For now, we are relying on the fact that make_code_young doesn't do any |
1477 // garbage collection which allows us to save/restore the registers without | 1520 // garbage collection which allows us to save/restore the registers without |
1478 // worrying about which of them contain pointers. We also don't build an | 1521 // worrying about which of them contain pointers. We also don't build an |
1479 // internal frame to make the code faster, since we shouldn't have to do stack | 1522 // internal frame to make the code faster, since we shouldn't have to do stack |
1480 // crawls in MakeCodeYoung. This seems a bit fragile. | 1523 // crawls in MakeCodeYoung. This seems a bit fragile. |
1481 | 1524 |
1482 // Set a0 to point to the head of the PlatformCodeAge sequence. | 1525 // Set a0 to point to the head of the PlatformCodeAge sequence. |
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3001 __ break_(0xCC); | 3044 __ break_(0xCC); |
3002 } | 3045 } |
3003 } | 3046 } |
3004 | 3047 |
3005 #undef __ | 3048 #undef __ |
3006 | 3049 |
3007 } // namespace internal | 3050 } // namespace internal |
3008 } // namespace v8 | 3051 } // namespace v8 |
3009 | 3052 |
3010 #endif // V8_TARGET_ARCH_MIPS | 3053 #endif // V8_TARGET_ARCH_MIPS |
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