diff options
Diffstat (limited to 'deps/v8/third_party/wasm-api/example/memory.c')
-rw-r--r-- | deps/v8/third_party/wasm-api/example/memory.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/deps/v8/third_party/wasm-api/example/memory.c b/deps/v8/third_party/wasm-api/example/memory.c new file mode 100644 index 0000000000..64b0f86b51 --- /dev/null +++ b/deps/v8/third_party/wasm-api/example/memory.c @@ -0,0 +1,217 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> + +#include "wasm.h" + +#define own + + +wasm_memory_t* get_export_memory(const wasm_extern_vec_t* exports, size_t i) { + if (exports->size <= i || !wasm_extern_as_memory(exports->data[i])) { + printf("> Error accessing memory export %zu!\n", i); + exit(1); + } + return wasm_extern_as_memory(exports->data[i]); +} + +wasm_func_t* get_export_func(const wasm_extern_vec_t* exports, size_t i) { + if (exports->size <= i || !wasm_extern_as_func(exports->data[i])) { + printf("> Error accessing function export %zu!\n", i); + exit(1); + } + return wasm_extern_as_func(exports->data[i]); +} + + +void check(bool success) { + if (!success) { + printf("> Error, expected success\n"); + exit(1); + } +} + +void check_call(wasm_func_t* func, wasm_val_t args[], int32_t expected) { + wasm_val_t results[1]; + if (wasm_func_call(func, args, results) || results[0].of.i32 != expected) { + printf("> Error on result\n"); + exit(1); + } +} + +void check_call0(wasm_func_t* func, int32_t expected) { + check_call(func, NULL, expected); +} + +void check_call1(wasm_func_t* func, int32_t arg, int32_t expected) { + wasm_val_t args[] = { {.kind = WASM_I32, .of = {.i32 = arg}} }; + check_call(func, args, expected); +} + +void check_call2(wasm_func_t* func, int32_t arg1, int32_t arg2, int32_t expected) { + wasm_val_t args[2] = { + {.kind = WASM_I32, .of = {.i32 = arg1}}, + {.kind = WASM_I32, .of = {.i32 = arg2}} + }; + check_call(func, args, expected); +} + +void check_ok(wasm_func_t* func, wasm_val_t args[]) { + if (wasm_func_call(func, args, NULL)) { + printf("> Error on result, expected empty\n"); + exit(1); + } +} + +void check_ok2(wasm_func_t* func, int32_t arg1, int32_t arg2) { + wasm_val_t args[2] = { + {.kind = WASM_I32, .of = {.i32 = arg1}}, + {.kind = WASM_I32, .of = {.i32 = arg2}} + }; + check_ok(func, args); +} + +void check_trap(wasm_func_t* func, wasm_val_t args[]) { + wasm_val_t results[1]; + own wasm_trap_t* trap = wasm_func_call(func, args, results); + if (! trap) { + printf("> Error on result, expected trap\n"); + exit(1); + } + wasm_trap_delete(trap); +} + +void check_trap1(wasm_func_t* func, int32_t arg) { + wasm_val_t args[1] = { {.kind = WASM_I32, .of = {.i32 = arg}} }; + check_trap(func, args); +} + +void check_trap2(wasm_func_t* func, int32_t arg1, int32_t arg2) { + wasm_val_t args[2] = { + {.kind = WASM_I32, .of = {.i32 = arg1}}, + {.kind = WASM_I32, .of = {.i32 = arg2}} + }; + check_trap(func, args); +} + + +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("memory.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_instance_t* instance = wasm_instance_new(store, module, NULL); + if (!instance) { + printf("> Error instantiating module!\n"); + return 1; + } + + // Extract export. + printf("Extracting exports...\n"); + own wasm_extern_vec_t exports; + wasm_instance_exports(instance, &exports); + size_t i = 0; + wasm_memory_t* memory = get_export_memory(&exports, i++); + wasm_func_t* size_func = get_export_func(&exports, i++); + wasm_func_t* load_func = get_export_func(&exports, i++); + wasm_func_t* store_func = get_export_func(&exports, i++); + + wasm_module_delete(module); + + // Check initial memory. + printf("Checking memory...\n"); + check(wasm_memory_size(memory) == 2); + check(wasm_memory_data_size(memory) == 0x20000); + check(wasm_memory_data(memory)[0] == 0); + check(wasm_memory_data(memory)[0x1000] == 1); + check(wasm_memory_data(memory)[0x1003] == 4); + + check_call0(size_func, 2); + check_call1(load_func, 0, 0); + check_call1(load_func, 0x1000, 1); + check_call1(load_func, 0x1003, 4); + check_call1(load_func, 0x1ffff, 0); + check_trap1(load_func, 0x20000); + + // Mutate memory. + printf("Mutating memory...\n"); + wasm_memory_data(memory)[0x1003] = 5; + check_ok2(store_func, 0x1002, 6); + check_trap2(store_func, 0x20000, 0); + + check(wasm_memory_data(memory)[0x1002] == 6); + check(wasm_memory_data(memory)[0x1003] == 5); + check_call1(load_func, 0x1002, 6); + check_call1(load_func, 0x1003, 5); + + // Grow memory. + printf("Growing memory...\n"); + check(wasm_memory_grow(memory, 1)); + check(wasm_memory_size(memory) == 3); + check(wasm_memory_data_size(memory) == 0x30000); + + check_call1(load_func, 0x20000, 0); + check_ok2(store_func, 0x20000, 0); + check_trap1(load_func, 0x30000); + check_trap2(store_func, 0x30000, 0); + + check(! wasm_memory_grow(memory, 1)); + check(wasm_memory_grow(memory, 0)); + + wasm_extern_vec_delete(&exports); + wasm_instance_delete(instance); + + // Create stand-alone memory. + // TODO(wasm+): Once Wasm allows multiple memories, turn this into import. + printf("Creating stand-alone memory...\n"); + wasm_limits_t limits = {5, 5}; + own wasm_memorytype_t* memorytype = wasm_memorytype_new(&limits); + own wasm_memory_t* memory2 = wasm_memory_new(store, memorytype); + check(wasm_memory_size(memory2) == 5); + check(! wasm_memory_grow(memory2, 1)); + check(wasm_memory_grow(memory2, 0)); + + wasm_memorytype_delete(memorytype); + wasm_memory_delete(memory2); + + // Shut down. + printf("Shutting down...\n"); + wasm_store_delete(store); + wasm_engine_delete(engine); + + // All done. + printf("Done.\n"); + return 0; +} |