bool loadModule(const AST::Module* module)
{
// Free any existing memory.
vmShrinkMemory(vmGrowMemory(0));
// Initialize the module's requested initial memory.
if(vmGrowMemory((int32)module->initialNumPagesMemory * AST::numBytesPerPage) != 0)
{
std::cerr << "Failed to commit the requested initial memory for module instance (" << module->initialNumPagesMemory*AST::numBytesPerPage/1024 << "KB requested)" << std::endl;
return false;
}
// Copy the module's data segments into VM memory.
if(module->initialNumPagesMemory * AST::numBytesPerPage >= (1ull<<32)) { throw; }
for(auto dataSegment : module->dataSegments)
{
if(dataSegment.baseAddress + dataSegment.numBytes > module->initialNumPagesMemory * AST::numBytesPerPage)
{
std::cerr << "Module data segment exceeds initial memory allocation" << std::endl;
return false;
}
memcpy(instanceMemoryBase + dataSegment.baseAddress,dataSegment.data,dataSegment.numBytes);
}
// Generate machine code for the module.
if(!LLVMJIT::compileModule(module)) { return false; }
// Initialize the intrinsics.
initEmscriptenIntrinsics(module);
initWebAssemblyIntrinsics();
initWAVMIntrinsics();
// Call the module's start function.
if(module->startFunctionIndex != UINTPTR_MAX)
{
assert(module->functions[module->startFunctionIndex]->type == AST::FunctionType());
invokeFunction(module,module->startFunctionIndex,nullptr);
}
return true;
}
void init()
{
LLVMJIT::init();
initWAVMIntrinsics();
}