static bool
DecodeModule(JSContext* cx, UniqueChars filename, const uint8_t* bytes, uint32_t length,
ImportNameVector* importNames, ExportMap* exportMap,
MutableHandle<WasmModuleObject*> moduleObj)
{
Decoder d(bytes, bytes + length);
uint32_t u32;
if (!d.readU32(&u32) || u32 != MagicNumber)
return Fail(cx, d, "failed to match magic number");
if (!d.readU32(&u32) || u32 != EncodingVersion)
return Fail(cx, d, "failed to match binary version");
UniqueModuleGeneratorData init = MakeUnique<ModuleGeneratorData>();
if (!init)
return false;
if (!DecodeSignatureSection(cx, d, init.get()))
return false;
if (!DecodeDeclarationSection(cx, d, init.get()))
return false;
if (!DecodeImportSection(cx, d, init.get(), importNames))
return false;
ModuleGenerator mg(cx);
if (!mg.init(Move(init)))
return false;
if (!DecodeExportsSection(cx, d, mg, exportMap))
return false;
HeapUsage heapUsage = HeapUsage::None;
if (!DecodeCodeSection(cx, d, mg))
return false;
CacheableCharsVector funcNames;
while (!d.readCStringIf(EndSection)) {
if (!DecodeUnknownSection(cx, d))
return false;
}
if (!d.done())
return Fail(cx, d, "failed to consume all bytes of module");
UniqueModuleData module;
UniqueStaticLinkData link;
SlowFunctionVector slowFuncs(cx);
if (!mg.finish(heapUsage, Move(filename), Move(funcNames), &module, &link, &slowFuncs))
return false;
moduleObj.set(WasmModuleObject::create(cx));
if (!moduleObj)
return false;
if (!moduleObj->init(cx->new_<Module>(Move(module))))
return false;
return moduleObj->module().staticallyLink(cx, *link);
}
static bool
DecodeModule(JSContext* cx, UniqueChars file, const uint8_t* bytes, uint32_t length,
ImportNameVector* importNames, UniqueExportMap* exportMap,
MutableHandle<ArrayBufferObject*> heap, MutableHandle<WasmModuleObject*> moduleObj)
{
Decoder d(bytes, bytes + length);
uint32_t u32;
if (!d.readFixedU32(&u32) || u32 != MagicNumber)
return Fail(cx, d, "failed to match magic number");
if (!d.readFixedU32(&u32) || u32 != EncodingVersion)
return Fail(cx, d, "failed to match binary version");
UniqueModuleGeneratorData init = js::MakeUnique<ModuleGeneratorData>(cx);
if (!init)
return false;
if (!DecodeSignatures(cx, d, init.get()))
return false;
if (!DecodeImportTable(cx, d, init.get(), importNames))
return false;
if (!DecodeFunctionSignatures(cx, d, init.get()))
return false;
if (!DecodeFunctionTable(cx, d, init.get()))
return false;
ModuleGenerator mg(cx);
if (!mg.init(Move(init), Move(file)))
return false;
if (!DecodeMemory(cx, d, mg, heap))
return false;
if (!DecodeExportTable(cx, d, mg))
return false;
if (!DecodeFunctionBodies(cx, d, mg))
return false;
if (!DecodeDataSegments(cx, d, heap))
return false;
CacheableCharsVector funcNames;
while (!d.done()) {
if (!d.skipSection())
return Fail(cx, d, "failed to skip unknown section at end");
}
UniqueModuleData module;
UniqueStaticLinkData staticLink;
SlowFunctionVector slowFuncs(cx);
if (!mg.finish(Move(funcNames), &module, &staticLink, exportMap, &slowFuncs))
return false;
moduleObj.set(WasmModuleObject::create(cx));
if (!moduleObj)
return false;
if (!moduleObj->init(cx->new_<Module>(Move(module))))
return false;
return moduleObj->module().staticallyLink(cx, *staticLink);
}