| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <inttypes.h> |
| |
| #include "wasm.h" |
| |
| #define own |
| |
| |
| void print_frame(wasm_frame_t* frame) { |
| printf("> %p @ 0x%zx = %"PRIu32".0x%zx\n", |
| wasm_frame_instance(frame), |
| wasm_frame_module_offset(frame), |
| wasm_frame_func_index(frame), |
| wasm_frame_func_offset(frame) |
| ); |
| } |
| |
| |
| int main(int argc, const char* argv[]) { |
| // Initialize. |
| printf("Initializing...\n"); |
| wasm_engine_t* engine = wasm_engine_new(); |
| wasm_store_t* store = wasm_store_new(engine); |
| |
| // Load binary. |
| printf("Loading binary...\n"); |
| FILE* file = fopen("start.wasm", "r"); |
| if (!file) { |
| printf("> Error loading module!\n"); |
| return 1; |
| } |
| fseek(file, 0L, SEEK_END); |
| size_t file_size = ftell(file); |
| fseek(file, 0L, SEEK_SET); |
| wasm_byte_vec_t binary; |
| wasm_byte_vec_new_uninitialized(&binary, file_size); |
| if (fread(binary.data, file_size, 1, file) != 1) { |
| printf("> Error loading module!\n"); |
| return 1; |
| } |
| fclose(file); |
| |
| // Compile. |
| printf("Compiling module...\n"); |
| own wasm_module_t* module = wasm_module_new(store, &binary); |
| if (!module) { |
| printf("> Error compiling module!\n"); |
| return 1; |
| } |
| |
| wasm_byte_vec_delete(&binary); |
| |
| // Instantiate. |
| printf("Instantiating module...\n"); |
| own wasm_trap_t* trap = NULL; |
| own wasm_instance_t* instance = |
| wasm_instance_new(store, module, NULL, &trap); |
| if (instance || !trap) { |
| printf("> Error instantiating module, expected trap!\n"); |
| return 1; |
| } |
| |
| wasm_module_delete(module); |
| |
| // Print result. |
| printf("Printing message...\n"); |
| own wasm_name_t message; |
| wasm_trap_message(trap, &message); |
| printf("> %s\n", message.data); |
| |
| printf("Printing origin...\n"); |
| own wasm_frame_t* frame = wasm_trap_origin(trap); |
| if (frame) { |
| print_frame(frame); |
| wasm_frame_delete(frame); |
| } else { |
| printf("> Empty origin.\n"); |
| } |
| |
| printf("Printing trace...\n"); |
| own wasm_frame_vec_t trace; |
| wasm_trap_trace(trap, &trace); |
| if (trace.size > 0) { |
| for (size_t i = 0; i < trace.size; ++i) { |
| print_frame(trace.data[i]); |
| } |
| } else { |
| printf("> Empty trace.\n"); |
| } |
| |
| wasm_frame_vec_delete(&trace); |
| wasm_trap_delete(trap); |
| wasm_name_delete(&message); |
| |
| // Shut down. |
| printf("Shutting down...\n"); |
| wasm_store_delete(store); |
| wasm_engine_delete(engine); |
| |
| // All done. |
| printf("Done.\n"); |
| return 0; |
| } |