#include <iostream> #include <fstream> #include <cstdlib> #include <string> #include <cinttypes> #include "wasm.hh" void print_frame(const wasm::Frame* frame) { std::cout << "> " << frame->instance(); std::cout << " @ 0x" << std::hex << frame->module_offset(); std::cout << " = " << frame->func_index(); std::cout << ".0x" << std::hex << frame->func_offset() << std::endl; } void run() { // Initialize. std::cout << "Initializing..." << std::endl; auto engine = wasm::Engine::make(); auto store_ = wasm::Store::make(engine.get()); auto store = store_.get(); // Load binary. std::cout << "Loading binary..." << std::endl; std::ifstream file("start.wasm"); file.seekg(0, std::ios_base::end); auto file_size = file.tellg(); file.seekg(0); auto binary = wasm::vec<byte_t>::make_uninitialized(file_size); file.read(binary.get(), file_size); file.close(); if (file.fail()) { std::cout << "> Error loading module!" << std::endl; exit(1); } // Compile. std::cout << "Compiling module..." << std::endl; auto module = wasm::Module::make(store, binary); if (!module) { std::cout << "> Error compiling module!" << std::endl; exit(1); } // Instantiate. std::cout << "Instantiating module..." << std::endl; wasm::own<wasm::Trap> trap; auto instance = wasm::Instance::make(store, module.get(), nullptr, &trap); if (instance || !trap) { std::cout << "> Error instantiating module, expected trap!" << std::endl; exit(1); } // Print result. std::cout << "Printing message..." << std::endl; std::cout << "> " << trap->message().get() << std::endl; std::cout << "Printing origin..." << std::endl; auto frame = trap->origin(); if (frame) { print_frame(frame.get()); } else { std::cout << "> Empty origin." << std::endl; } std::cout << "Printing trace..." << std::endl; auto trace = trap->trace(); if (trace.size() > 0) { for (size_t i = 0; i < trace.size(); ++i) { print_frame(trace[i].get()); } } else { std::cout << "> Empty trace." << std::endl; } // Shut down. std::cout << "Shutting down..." << std::endl; } int main(int argc, const char* argv[]) { run(); std::cout << "Done." << std::endl; return 0; }