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1 // Copyright 2017 the V8 project authors. All rights reserved. | 1 // Copyright 2017 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/module-compiler.h> | 5 #include <src/wasm/module-compiler.h> |
6 | 6 |
7 #include <atomic> | 7 #include <atomic> |
8 | 8 |
9 #include "src/asmjs/asm-js.h" | 9 #include "src/asmjs/asm-js.h" |
10 #include "src/assembler-inl.h" | 10 #include "src/assembler-inl.h" |
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1011 | 1011 |
1012 //-------------------------------------------------------------------------- | 1012 //-------------------------------------------------------------------------- |
1013 // Set up the exports object for the new instance. | 1013 // Set up the exports object for the new instance. |
1014 //-------------------------------------------------------------------------- | 1014 //-------------------------------------------------------------------------- |
1015 ProcessExports(code_table, instance, compiled_module_); | 1015 ProcessExports(code_table, instance, compiled_module_); |
1016 if (thrower_->error()) return {}; | 1016 if (thrower_->error()) return {}; |
1017 | 1017 |
1018 //-------------------------------------------------------------------------- | 1018 //-------------------------------------------------------------------------- |
1019 // Add instance to Memory object | 1019 // Add instance to Memory object |
1020 //-------------------------------------------------------------------------- | 1020 //-------------------------------------------------------------------------- |
1021 DCHECK(wasm::IsWasmInstance(*instance)); | 1021 DCHECK(instance->IsWasmInstanceObject()); |
1022 if (instance->has_memory_object()) { | 1022 if (instance->has_memory_object()) { |
1023 instance->memory_object()->AddInstance(isolate_, instance); | 1023 instance->memory_object()->AddInstance(isolate_, instance); |
1024 } | 1024 } |
1025 | 1025 |
1026 //-------------------------------------------------------------------------- | 1026 //-------------------------------------------------------------------------- |
1027 // Initialize the indirect function tables. | 1027 // Initialize the indirect function tables. |
1028 //-------------------------------------------------------------------------- | 1028 //-------------------------------------------------------------------------- |
1029 if (function_table_count > 0) LoadTableSegments(code_table, instance); | 1029 if (function_table_count > 0) LoadTableSegments(code_table, instance); |
1030 | 1030 |
1031 // Patch all code with the relocations registered in code_specialization. | 1031 // Patch all code with the relocations registered in code_specialization. |
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1063 // Publish the new instance to the instances chain. | 1063 // Publish the new instance to the instances chain. |
1064 { | 1064 { |
1065 DisallowHeapAllocation no_gc; | 1065 DisallowHeapAllocation no_gc; |
1066 if (!link_to_original.is_null()) { | 1066 if (!link_to_original.is_null()) { |
1067 compiled_module_->set_weak_next_instance( | 1067 compiled_module_->set_weak_next_instance( |
1068 link_to_original.ToHandleChecked()); | 1068 link_to_original.ToHandleChecked()); |
1069 original.ToHandleChecked()->set_weak_prev_instance(link_to_clone); | 1069 original.ToHandleChecked()->set_weak_prev_instance(link_to_clone); |
1070 compiled_module_->set_weak_wasm_module( | 1070 compiled_module_->set_weak_wasm_module( |
1071 original.ToHandleChecked()->weak_wasm_module()); | 1071 original.ToHandleChecked()->weak_wasm_module()); |
1072 } | 1072 } |
1073 module_object_->SetEmbedderField(0, *compiled_module_); | 1073 module_object_->set_compiled_module(*compiled_module_); |
1074 compiled_module_->set_weak_owning_instance(link_to_owning_instance); | 1074 compiled_module_->set_weak_owning_instance(link_to_owning_instance); |
1075 GlobalHandles::MakeWeak( | 1075 GlobalHandles::MakeWeak( |
1076 global_handle.location(), global_handle.location(), | 1076 global_handle.location(), global_handle.location(), |
1077 instance_finalizer_callback_, v8::WeakCallbackType::kFinalizer); | 1077 instance_finalizer_callback_, v8::WeakCallbackType::kFinalizer); |
1078 } | 1078 } |
1079 } | 1079 } |
1080 | 1080 |
1081 //-------------------------------------------------------------------------- | 1081 //-------------------------------------------------------------------------- |
1082 // Debugging support. | 1082 // Debugging support. |
1083 //-------------------------------------------------------------------------- | 1083 //-------------------------------------------------------------------------- |
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1387 // provided. | 1387 // provided. |
1388 DCHECK(!instance->has_memory_object()); | 1388 DCHECK(!instance->has_memory_object()); |
1389 if (!WasmJs::IsWasmMemoryObject(isolate_, value)) { | 1389 if (!WasmJs::IsWasmMemoryObject(isolate_, value)) { |
1390 ReportLinkError("memory import must be a WebAssembly.Memory object", | 1390 ReportLinkError("memory import must be a WebAssembly.Memory object", |
1391 index, module_name, import_name); | 1391 index, module_name, import_name); |
1392 return -1; | 1392 return -1; |
1393 } | 1393 } |
1394 auto memory = Handle<WasmMemoryObject>::cast(value); | 1394 auto memory = Handle<WasmMemoryObject>::cast(value); |
1395 DCHECK(WasmJs::IsWasmMemoryObject(isolate_, memory)); | 1395 DCHECK(WasmJs::IsWasmMemoryObject(isolate_, memory)); |
1396 instance->set_memory_object(*memory); | 1396 instance->set_memory_object(*memory); |
1397 memory_ = Handle<JSArrayBuffer>(memory->buffer(), isolate_); | 1397 memory_ = Handle<JSArrayBuffer>(memory->array_buffer(), isolate_); |
1398 uint32_t imported_cur_pages = static_cast<uint32_t>( | 1398 uint32_t imported_cur_pages = static_cast<uint32_t>( |
1399 memory_->byte_length()->Number() / WasmModule::kPageSize); | 1399 memory_->byte_length()->Number() / WasmModule::kPageSize); |
1400 if (imported_cur_pages < module_->min_mem_pages) { | 1400 if (imported_cur_pages < module_->min_mem_pages) { |
1401 thrower_->LinkError( | 1401 thrower_->LinkError( |
1402 "memory import %d is smaller than maximum %u, got %u", index, | 1402 "memory import %d is smaller than maximum %u, got %u", index, |
1403 module_->min_mem_pages, imported_cur_pages); | 1403 module_->min_mem_pages, imported_cur_pages); |
1404 } | 1404 } |
1405 int32_t imported_max_pages = memory->maximum_pages(); | 1405 int32_t imported_max_pages = memory->maximum_pages(); |
1406 if (module_->has_max_mem) { | 1406 if (module_->has_max_mem) { |
1407 if (imported_max_pages < 0) { | 1407 if (imported_max_pages < 0) { |
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1657 memory_object = WasmMemoryObject::New( | 1657 memory_object = WasmMemoryObject::New( |
1658 isolate_, | 1658 isolate_, |
1659 (instance->has_memory_buffer()) | 1659 (instance->has_memory_buffer()) |
1660 ? handle(instance->memory_buffer()) | 1660 ? handle(instance->memory_buffer()) |
1661 : Handle<JSArrayBuffer>::null(), | 1661 : Handle<JSArrayBuffer>::null(), |
1662 (module_->max_mem_pages != 0) ? module_->max_mem_pages : -1); | 1662 (module_->max_mem_pages != 0) ? module_->max_mem_pages : -1); |
1663 instance->set_memory_object(*memory_object); | 1663 instance->set_memory_object(*memory_object); |
1664 } else { | 1664 } else { |
1665 memory_object = | 1665 memory_object = |
1666 Handle<WasmMemoryObject>(instance->memory_object(), isolate_); | 1666 Handle<WasmMemoryObject>(instance->memory_object(), isolate_); |
1667 DCHECK(WasmJs::IsWasmMemoryObject(isolate_, memory_object)); | |
1668 memory_object->ResetInstancesLink(isolate_); | 1667 memory_object->ResetInstancesLink(isolate_); |
1669 } | 1668 } |
1670 | 1669 |
1671 desc.set_value(memory_object); | 1670 desc.set_value(memory_object); |
1672 break; | 1671 break; |
1673 } | 1672 } |
1674 case kExternalGlobal: { | 1673 case kExternalGlobal: { |
1675 // Export the value of the global variable as a number. | 1674 // Export the value of the global variable as a number. |
1676 WasmGlobal& global = module_->globals[exp.index]; | 1675 WasmGlobal& global = module_->globals[exp.index]; |
1677 double num = 0; | 1676 double num = 0; |
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2351 HandleScope scope(job_->isolate_); | 2350 HandleScope scope(job_->isolate_); |
2352 Handle<WasmModuleObject> result = | 2351 Handle<WasmModuleObject> result = |
2353 WasmModuleObject::New(job_->isolate_, job_->compiled_module_); | 2352 WasmModuleObject::New(job_->isolate_, job_->compiled_module_); |
2354 // {job_} is deleted in AsyncCompileSucceeded, therefore the {return}. | 2353 // {job_} is deleted in AsyncCompileSucceeded, therefore the {return}. |
2355 return job_->AsyncCompileSucceeded(result); | 2354 return job_->AsyncCompileSucceeded(result); |
2356 } | 2355 } |
2357 }; | 2356 }; |
2358 } // namespace wasm | 2357 } // namespace wasm |
2359 } // namespace internal | 2358 } // namespace internal |
2360 } // namespace v8 | 2359 } // namespace v8 |
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