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Issue 1150293002: Do not leak message object beyond try-catch. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: platform ports and turbofan Created 5 years, 7 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_ARM64 7 #if V8_TARGET_ARCH_ARM64
8 8
9 #include "src/code-factory.h" 9 #include "src/code-factory.h"
10 #include "src/code-stubs.h" 10 #include "src/code-stubs.h"
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5380 // Restore result register and cooked return address from the stack. 5380 // Restore result register and cooked return address from the stack.
5381 __ Pop(x10, result_register()); 5381 __ Pop(x10, result_register());
5382 5382
5383 // Uncook the return address (see EnterFinallyBlock). 5383 // Uncook the return address (see EnterFinallyBlock).
5384 __ SmiUntag(x10); 5384 __ SmiUntag(x10);
5385 __ Add(x11, x10, Operand(masm_->CodeObject())); 5385 __ Add(x11, x10, Operand(masm_->CodeObject()));
5386 __ Br(x11); 5386 __ Br(x11);
5387 } 5387 }
5388 5388
5389 5389
5390 void FullCodeGenerator::EnterCatchBlock() {
5391 DCHECK(!result_register().is(x10));
5392 ExternalReference pending_message_obj =
5393 ExternalReference::address_of_pending_message_obj(isolate());
5394 __ LoadRoot(x10, Heap::kTheHoleValueRootIndex);
5395 __ Mov(x13, pending_message_obj);
5396 __ Str(x10, MemOperand(x13));
5397 }
5398
5399
5390 #undef __ 5400 #undef __
5391 5401
5392 5402
5393 void BackEdgeTable::PatchAt(Code* unoptimized_code, 5403 void BackEdgeTable::PatchAt(Code* unoptimized_code,
5394 Address pc, 5404 Address pc,
5395 BackEdgeState target_state, 5405 BackEdgeState target_state,
5396 Code* replacement_code) { 5406 Code* replacement_code) {
5397 // Turn the jump into a nop. 5407 // Turn the jump into a nop.
5398 Address branch_address = pc - 3 * kInstructionSize; 5408 Address branch_address = pc - 3 * kInstructionSize;
5399 PatchingAssembler patcher(branch_address, 1); 5409 PatchingAssembler patcher(branch_address, 1);
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5481 } 5491 }
5482 } 5492 }
5483 5493
5484 return INTERRUPT; 5494 return INTERRUPT;
5485 } 5495 }
5486 5496
5487 5497
5488 } } // namespace v8::internal 5498 } } // namespace v8::internal
5489 5499
5490 #endif // V8_TARGET_ARCH_ARM64 5500 #endif // V8_TARGET_ARCH_ARM64
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