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