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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 // 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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4486 | 4486 |
4487 void FullCodeGenerator::EnterFinallyBlock() { | 4487 void FullCodeGenerator::EnterFinallyBlock() { |
4488 ASSERT(!result_register().is(r1)); | 4488 ASSERT(!result_register().is(r1)); |
4489 // Store result register while executing finally block. | 4489 // Store result register while executing finally block. |
4490 __ push(result_register()); | 4490 __ push(result_register()); |
4491 // Cook return address in link register to stack (smi encoded Code* delta) | 4491 // Cook return address in link register to stack (smi encoded Code* delta) |
4492 __ sub(r1, lr, Operand(masm_->CodeObject())); | 4492 __ sub(r1, lr, Operand(masm_->CodeObject())); |
4493 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); | 4493 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); |
4494 STATIC_ASSERT(kSmiTag == 0); | 4494 STATIC_ASSERT(kSmiTag == 0); |
4495 __ add(r1, r1, Operand(r1)); // Convert to smi. | 4495 __ add(r1, r1, Operand(r1)); // Convert to smi. |
| 4496 |
| 4497 // Store result register while executing finally block. |
| 4498 __ push(r1); |
| 4499 |
| 4500 // Store pending message while executing finally block. |
| 4501 ExternalReference pending_message_obj = |
| 4502 ExternalReference::address_of_pending_message_obj(isolate()); |
| 4503 __ mov(ip, Operand(pending_message_obj)); |
| 4504 __ ldr(r1, MemOperand(ip)); |
| 4505 __ push(r1); |
| 4506 |
| 4507 ExternalReference has_pending_message = |
| 4508 ExternalReference::address_of_has_pending_message(isolate()); |
| 4509 __ mov(ip, Operand(has_pending_message)); |
| 4510 __ ldr(r1, MemOperand(ip)); |
| 4511 __ push(r1); |
| 4512 |
| 4513 ExternalReference pending_message_script = |
| 4514 ExternalReference::address_of_pending_message_script(isolate()); |
| 4515 __ mov(ip, Operand(pending_message_script)); |
| 4516 __ ldr(r1, MemOperand(ip)); |
4496 __ push(r1); | 4517 __ push(r1); |
4497 } | 4518 } |
4498 | 4519 |
4499 | 4520 |
4500 void FullCodeGenerator::ExitFinallyBlock() { | 4521 void FullCodeGenerator::ExitFinallyBlock() { |
4501 ASSERT(!result_register().is(r1)); | 4522 ASSERT(!result_register().is(r1)); |
| 4523 // Restore pending message from stack. |
| 4524 __ pop(r1); |
| 4525 ExternalReference pending_message_script = |
| 4526 ExternalReference::address_of_pending_message_script(isolate()); |
| 4527 __ mov(ip, Operand(pending_message_script)); |
| 4528 __ str(r1, MemOperand(ip)); |
| 4529 |
| 4530 __ pop(r1); |
| 4531 ExternalReference has_pending_message = |
| 4532 ExternalReference::address_of_has_pending_message(isolate()); |
| 4533 __ mov(ip, Operand(has_pending_message)); |
| 4534 __ str(r1, MemOperand(ip)); |
| 4535 |
| 4536 __ pop(r1); |
| 4537 ExternalReference pending_message_obj = |
| 4538 ExternalReference::address_of_pending_message_obj(isolate()); |
| 4539 __ mov(ip, Operand(pending_message_obj)); |
| 4540 __ str(r1, MemOperand(ip)); |
| 4541 |
4502 // Restore result register from stack. | 4542 // Restore result register from stack. |
4503 __ pop(r1); | 4543 __ pop(r1); |
| 4544 |
4504 // Uncook return address and return. | 4545 // Uncook return address and return. |
4505 __ pop(result_register()); | 4546 __ pop(result_register()); |
4506 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); | 4547 ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); |
4507 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. | 4548 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. |
4508 __ add(pc, r1, Operand(masm_->CodeObject())); | 4549 __ add(pc, r1, Operand(masm_->CodeObject())); |
4509 } | 4550 } |
4510 | 4551 |
4511 | 4552 |
4512 #undef __ | 4553 #undef __ |
4513 | 4554 |
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4535 *context_length = 0; | 4576 *context_length = 0; |
4536 return previous_; | 4577 return previous_; |
4537 } | 4578 } |
4538 | 4579 |
4539 | 4580 |
4540 #undef __ | 4581 #undef __ |
4541 | 4582 |
4542 } } // namespace v8::internal | 4583 } } // namespace v8::internal |
4543 | 4584 |
4544 #endif // V8_TARGET_ARCH_ARM | 4585 #endif // V8_TARGET_ARCH_ARM |
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