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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/intermediate_language.h" | 8 #include "vm/intermediate_language.h" |
9 | 9 |
10 #include "lib/error.h" | 10 #include "lib/error.h" |
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1422 __ movl(Address(EBP, exception_var().index() * kWordSize), | 1422 __ movl(Address(EBP, exception_var().index() * kWordSize), |
1423 kExceptionObjectReg); | 1423 kExceptionObjectReg); |
1424 __ movl(Address(EBP, stacktrace_var().index() * kWordSize), | 1424 __ movl(Address(EBP, stacktrace_var().index() * kWordSize), |
1425 kStackTraceObjectReg); | 1425 kStackTraceObjectReg); |
1426 } | 1426 } |
1427 | 1427 |
1428 | 1428 |
1429 LocationSummary* CheckStackOverflowComp::MakeLocationSummary() const { | 1429 LocationSummary* CheckStackOverflowComp::MakeLocationSummary() const { |
1430 const intptr_t kNumInputs = 0; | 1430 const intptr_t kNumInputs = 0; |
1431 const intptr_t kNumTemps = 0; | 1431 const intptr_t kNumTemps = 0; |
1432 // TODO(vegorov): spilling is required only on an infrequently executed path. | |
1433 LocationSummary* summary = | 1432 LocationSummary* summary = |
1434 new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall); | 1433 new LocationSummary(kNumInputs, |
| 1434 kNumTemps, |
| 1435 LocationSummary::kCallOnSlowPath); |
1435 return summary; | 1436 return summary; |
1436 } | 1437 } |
1437 | 1438 |
1438 | 1439 |
| 1440 class CheckStackOverflowSlowPath : public SlowPathCode { |
| 1441 public: |
| 1442 explicit CheckStackOverflowSlowPath(CheckStackOverflowComp* computation) |
| 1443 : computation_(computation) { } |
| 1444 |
| 1445 virtual void EmitNativeCode(FlowGraphCompiler* compiler) { |
| 1446 __ Bind(entry_label()); |
| 1447 compiler->SaveLiveRegisters(computation_->locs()); |
| 1448 compiler->GenerateCallRuntime(computation_->deopt_id(), |
| 1449 computation_->token_pos(), |
| 1450 computation_->try_index(), |
| 1451 kStackOverflowRuntimeEntry, |
| 1452 computation_->locs()->stack_bitmap()); |
| 1453 compiler->RestoreLiveRegisters(computation_->locs()); |
| 1454 __ jmp(exit_label()); |
| 1455 } |
| 1456 |
| 1457 private: |
| 1458 CheckStackOverflowComp* computation_; |
| 1459 }; |
| 1460 |
| 1461 |
1439 void CheckStackOverflowComp::EmitNativeCode(FlowGraphCompiler* compiler) { | 1462 void CheckStackOverflowComp::EmitNativeCode(FlowGraphCompiler* compiler) { |
| 1463 CheckStackOverflowSlowPath* slow_path = new CheckStackOverflowSlowPath(this); |
| 1464 compiler->AddSlowPathCode(slow_path); |
| 1465 |
1440 __ cmpl(ESP, | 1466 __ cmpl(ESP, |
1441 Address::Absolute(Isolate::Current()->stack_limit_address())); | 1467 Address::Absolute(Isolate::Current()->stack_limit_address())); |
1442 Label no_stack_overflow; | 1468 __ j(BELOW_EQUAL, slow_path->entry_label()); |
1443 __ j(ABOVE, &no_stack_overflow); | 1469 __ Bind(slow_path->exit_label()); |
1444 compiler->GenerateCallRuntime(deopt_id(), | |
1445 token_pos(), | |
1446 try_index(), | |
1447 kStackOverflowRuntimeEntry, | |
1448 locs()->stack_bitmap()); | |
1449 __ Bind(&no_stack_overflow); | |
1450 } | 1470 } |
1451 | 1471 |
1452 | 1472 |
1453 LocationSummary* BinaryOpComp::MakeLocationSummary() const { | 1473 LocationSummary* BinaryOpComp::MakeLocationSummary() const { |
1454 const intptr_t kNumInputs = 2; | 1474 const intptr_t kNumInputs = 2; |
1455 | 1475 |
1456 // Double operation are handled in DoubleBinaryOpComp. | 1476 // Double operation are handled in DoubleBinaryOpComp. |
1457 ASSERT(operands_type() != kDoubleOperands); | 1477 ASSERT(operands_type() != kDoubleOperands); |
1458 | 1478 |
1459 if (operands_type() == kMintOperands) { | 1479 if (operands_type() == kMintOperands) { |
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2203 locs()->stack_bitmap()); | 2223 locs()->stack_bitmap()); |
2204 __ CompareObject(EAX, compiler->bool_true()); | 2224 __ CompareObject(EAX, compiler->bool_true()); |
2205 EmitBranchOnCondition(compiler, branch_condition); | 2225 EmitBranchOnCondition(compiler, branch_condition); |
2206 } | 2226 } |
2207 | 2227 |
2208 } // namespace dart | 2228 } // namespace dart |
2209 | 2229 |
2210 #undef __ | 2230 #undef __ |
2211 | 2231 |
2212 #endif // defined TARGET_ARCH_X64 | 2232 #endif // defined TARGET_ARCH_X64 |
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