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1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 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/wasm/wasm-interpreter.h" | 5 #include "src/wasm/wasm-interpreter.h" |
6 | 6 |
7 #include "src/utils.h" | 7 #include "src/utils.h" |
8 #include "src/wasm/ast-decoder.h" | 8 #include "src/wasm/ast-decoder.h" |
9 #include "src/wasm/decoder.h" | 9 #include "src/wasm/decoder.h" |
10 #include "src/wasm/wasm-external-refs.h" | 10 #include "src/wasm/wasm-external-refs.h" |
| 11 #include "src/wasm/wasm-limits.h" |
11 #include "src/wasm/wasm-module.h" | 12 #include "src/wasm/wasm-module.h" |
12 | 13 |
13 #include "src/zone/accounting-allocator.h" | 14 #include "src/zone/accounting-allocator.h" |
14 #include "src/zone/zone-containers.h" | 15 #include "src/zone/zone-containers.h" |
15 | 16 |
16 namespace v8 { | 17 namespace v8 { |
17 namespace internal { | 18 namespace internal { |
18 namespace wasm { | 19 namespace wasm { |
19 | 20 |
20 #if DEBUG | 21 #if DEBUG |
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656 } | 657 } |
657 | 658 |
658 static inline int64_t ExecuteI64ReinterpretF64(double a, TrapReason* trap) { | 659 static inline int64_t ExecuteI64ReinterpretF64(double a, TrapReason* trap) { |
659 return bit_cast<int64_t>(a); | 660 return bit_cast<int64_t>(a); |
660 } | 661 } |
661 | 662 |
662 static inline int32_t ExecuteGrowMemory(uint32_t delta_pages, | 663 static inline int32_t ExecuteGrowMemory(uint32_t delta_pages, |
663 WasmInstance* instance) { | 664 WasmInstance* instance) { |
664 // TODO(ahaas): Move memory allocation to wasm-module.cc for better | 665 // TODO(ahaas): Move memory allocation to wasm-module.cc for better |
665 // encapsulation. | 666 // encapsulation. |
666 if (delta_pages > wasm::WasmModule::kV8MaxPages) { | 667 if (delta_pages > wasm::kV8MaxWasmMemoryPages) { |
667 return -1; | 668 return -1; |
668 } | 669 } |
669 uint32_t old_size = instance->mem_size; | 670 uint32_t old_size = instance->mem_size; |
670 uint32_t new_size; | 671 uint32_t new_size; |
671 byte* new_mem_start; | 672 byte* new_mem_start; |
672 if (instance->mem_size == 0) { | 673 if (instance->mem_size == 0) { |
673 // TODO(gdeepti): Fix bounds check to take into account size of memtype. | 674 // TODO(gdeepti): Fix bounds check to take into account size of memtype. |
674 new_size = delta_pages * wasm::WasmModule::kPageSize; | 675 new_size = delta_pages * wasm::WasmModule::kPageSize; |
675 new_mem_start = static_cast<byte*>(calloc(new_size, sizeof(byte))); | 676 new_mem_start = static_cast<byte*>(calloc(new_size, sizeof(byte))); |
676 if (!new_mem_start) { | 677 if (!new_mem_start) { |
677 return -1; | 678 return -1; |
678 } | 679 } |
679 } else { | 680 } else { |
680 DCHECK_NOT_NULL(instance->mem_start); | 681 DCHECK_NOT_NULL(instance->mem_start); |
681 new_size = old_size + delta_pages * wasm::WasmModule::kPageSize; | 682 new_size = old_size + delta_pages * wasm::WasmModule::kPageSize; |
682 if (new_size > | 683 if (new_size > wasm::kV8MaxWasmMemoryPages * wasm::WasmModule::kPageSize) { |
683 wasm::WasmModule::kV8MaxPages * wasm::WasmModule::kPageSize) { | |
684 return -1; | 684 return -1; |
685 } | 685 } |
686 new_mem_start = static_cast<byte*>(realloc(instance->mem_start, new_size)); | 686 new_mem_start = static_cast<byte*>(realloc(instance->mem_start, new_size)); |
687 if (!new_mem_start) { | 687 if (!new_mem_start) { |
688 return -1; | 688 return -1; |
689 } | 689 } |
690 // Zero initializing uninitialized memory from realloc | 690 // Zero initializing uninitialized memory from realloc |
691 memset(new_mem_start + old_size, 0, new_size - old_size); | 691 memset(new_mem_start + old_size, 0, new_size - old_size); |
692 } | 692 } |
693 instance->mem_start = new_mem_start; | 693 instance->mem_start = new_mem_start; |
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1888 | 1888 |
1889 ControlTransferMap WasmInterpreter::ComputeControlTransfersForTesting( | 1889 ControlTransferMap WasmInterpreter::ComputeControlTransfersForTesting( |
1890 Zone* zone, const byte* start, const byte* end) { | 1890 Zone* zone, const byte* start, const byte* end) { |
1891 ControlTransfers targets(zone, nullptr, start, end); | 1891 ControlTransfers targets(zone, nullptr, start, end); |
1892 return targets.map_; | 1892 return targets.map_; |
1893 } | 1893 } |
1894 | 1894 |
1895 } // namespace wasm | 1895 } // namespace wasm |
1896 } // namespace internal | 1896 } // namespace internal |
1897 } // namespace v8 | 1897 } // namespace v8 |
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