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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 1347 Comment cmnt(masm_, "[ Throw"); | 1347 Comment cmnt(masm_, "[ Throw"); |
| 1348 // Throw has no effect on the stack height or the current expression context. | 1348 // Throw has no effect on the stack height or the current expression context. |
| 1349 // Usually the expression context is null, because throw is a statement. | 1349 // Usually the expression context is null, because throw is a statement. |
| 1350 VisitForStackValue(expr->exception()); | 1350 VisitForStackValue(expr->exception()); |
| 1351 __ CallRuntime(Runtime::kThrow, 1); | 1351 __ CallRuntime(Runtime::kThrow, 1); |
| 1352 decrement_stack_height(); | 1352 decrement_stack_height(); |
| 1353 // Never returns here. | 1353 // Never returns here. |
| 1354 } | 1354 } |
| 1355 | 1355 |
| 1356 | 1356 |
| 1357 FullCodeGenerator::NestedStatement* FullCodeGenerator::TryFinally::Exit( | |
| 1358 int* stack_depth, | |
| 1359 int* context_length) { | |
| 1360 // The macros used here must preserve the result register. | |
| 1361 __ Drop(*stack_depth); | |
| 1362 __ PopTryHandler(); | |
| 1363 *stack_depth = 0; | |
| 1364 | |
| 1365 Register context = FullCodeGenerator::context_register(); | |
| 1366 while (*context_length > 0) { | |
| 1367 codegen_->LoadContextField(context, Context::PREVIOUS_INDEX); | |
| 1368 --(*context_length); | |
| 1369 } | |
| 1370 | |
| 1371 __ Call(finally_entry_); | |
| 1372 return previous_; | |
| 1373 } | |
| 1374 | |
| 1375 | |
| 1376 FullCodeGenerator::NestedStatement* FullCodeGenerator::TryCatch::Exit( | 1357 FullCodeGenerator::NestedStatement* FullCodeGenerator::TryCatch::Exit( |
| 1377 int* stack_depth, | 1358 int* stack_depth, |
| 1378 int* context_length) { | 1359 int* context_length) { |
| 1379 // The macros used here must preserve the result register. | 1360 // The macros used here must preserve the result register. |
| 1380 __ Drop(*stack_depth); | 1361 __ Drop(*stack_depth); |
| 1381 __ PopTryHandler(); | 1362 __ PopTryHandler(); |
| 1382 *stack_depth = 0; | 1363 *stack_depth = 0; |
| 1383 return previous_; | 1364 return previous_; |
| 1384 } | 1365 } |
| 1385 | 1366 |
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| 1401 } | 1382 } |
| 1402 | 1383 |
| 1403 return false; | 1384 return false; |
| 1404 } | 1385 } |
| 1405 | 1386 |
| 1406 | 1387 |
| 1407 #undef __ | 1388 #undef __ |
| 1408 | 1389 |
| 1409 | 1390 |
| 1410 } } // namespace v8::internal | 1391 } } // namespace v8::internal |
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