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#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 imports = wasm::vec<wasm::Extern*>::make();
auto instance = wasm::Instance::make(store, module.get(), imports, &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;
}
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