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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/compiler.h" | 9 #include "vm/compiler.h" |
10 #include "vm/dart_entry.h" | 10 #include "vm/dart_entry.h" |
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387 __ LeaveFrame(); | 387 __ LeaveFrame(); |
388 __ movl(EBP, EAX); | 388 __ movl(EBP, EAX); |
389 | 389 |
390 // Frame is fully rewritten at this point and it is safe to perform a GC. | 390 // Frame is fully rewritten at this point and it is safe to perform a GC. |
391 // Materialize any objects that were deferred by FillFrame because they | 391 // Materialize any objects that were deferred by FillFrame because they |
392 // require allocation. | 392 // require allocation. |
393 __ EnterStubFrame(); | 393 __ EnterStubFrame(); |
394 if (preserve_eax) { | 394 if (preserve_eax) { |
395 __ pushl(EBX); // Preserve result, it will be GC-d here. | 395 __ pushl(EBX); // Preserve result, it will be GC-d here. |
396 } | 396 } |
397 __ CallRuntime(kDeoptimizeMaterializeDoublesRuntimeEntry); | 397 __ pushl(Immediate(Smi::RawValue(0))); // Space for the result. |
| 398 __ CallRuntime(kDeoptimizeMaterializeRuntimeEntry); |
| 399 // Result tells stub how many bytes to remove from the expression stack |
| 400 // of the bottom-most frame. They were used as materialization arguments. |
| 401 __ popl(EBX); |
| 402 __ SmiUntag(EBX); |
398 if (preserve_eax) { | 403 if (preserve_eax) { |
399 __ popl(EAX); // Restore result. | 404 __ popl(EAX); // Restore result. |
400 } | 405 } |
401 __ LeaveFrame(); | 406 __ LeaveFrame(); |
| 407 |
| 408 __ popl(ECX); // Pop return address. |
| 409 __ addl(ESP, EBX); // Remove materialization arguments. |
| 410 __ pushl(ECX); // Push return address. |
402 __ ret(); | 411 __ ret(); |
403 } | 412 } |
404 | 413 |
405 | 414 |
406 // TOS: return address + call-instruction-size (5 bytes). | 415 // TOS: return address + call-instruction-size (5 bytes). |
407 // EAX: result, must be preserved | 416 // EAX: result, must be preserved |
408 void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) { | 417 void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) { |
409 // Correct return address to point just after the call that is being | 418 // Correct return address to point just after the call that is being |
410 // deoptimized. | 419 // deoptimized. |
411 __ popl(EBX); | 420 __ popl(EBX); |
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2111 __ Bind(&done); | 2120 __ Bind(&done); |
2112 __ popl(temp); | 2121 __ popl(temp); |
2113 __ popl(right); | 2122 __ popl(right); |
2114 __ popl(left); | 2123 __ popl(left); |
2115 __ ret(); | 2124 __ ret(); |
2116 } | 2125 } |
2117 | 2126 |
2118 } // namespace dart | 2127 } // namespace dart |
2119 | 2128 |
2120 #endif // defined TARGET_ARCH_IA32 | 2129 #endif // defined TARGET_ARCH_IA32 |
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