mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-13 14:25:32 +00:00
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
#include <stdio.h>
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#include "../wasmer.h"
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#include <assert.h>
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#include <stdint.h>
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int main()
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{
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// wasmer_import_object_t *import_object = wasmer_import_object_new();
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// Read the wasm file bytes
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FILE *file = fopen("sum.wasm", "r");
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fseek(file, 0, SEEK_END);
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long len = ftell(file);
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uint8_t *bytes = malloc(len);
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fseek(file, 0, SEEK_SET);
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fread(bytes, 1, len, file);
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fclose(file);
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wasmer_import_t imports[] = {};
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wasmer_instance_t *instance = NULL;
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wasmer_result_t compile_result = wasmer_instantiate(&instance, bytes, len, imports, 0);
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printf("Compile result: %d\n", compile_result);
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assert(compile_result == WASMER_OK);
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wasmer_exports_t *exports = NULL;
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wasmer_instance_exports(instance, &exports);
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int exports_len = wasmer_exports_len(exports);
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printf("exports_len: %d\n", exports_len);
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assert(exports_len == 1);
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wasmer_export_t *export = wasmer_exports_get(exports, 0);
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wasmer_import_export_kind kind = wasmer_export_kind(export);
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assert(kind == WASM_FUNCTION);
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wasmer_func_t *func = wasmer_export_to_func(export);
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wasmer_byte_array name_bytes = wasmer_export_name(export);
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assert(name_bytes.bytes_len == 3);
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char expected[] = {'s', 'u', 'm'};
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for(int idx = 0; idx < 3; idx++){
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printf("%c\n", name_bytes.bytes[idx]);
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assert(name_bytes.bytes[idx] == expected[idx]);
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}
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uint32_t params_arity;
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wasmer_func_params_arity(func, ¶ms_arity);
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assert(params_arity == 2);
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wasmer_value_tag *params_sig = malloc(sizeof(wasmer_value_tag) * params_arity);
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wasmer_func_params(func, params_sig , params_arity);
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assert(params_sig[0] == WASM_I32);
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assert(params_sig[1] == WASM_I32);
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free(params_sig);
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uint32_t returns_arity;
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wasmer_func_returns_arity(func, &returns_arity);
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assert(returns_arity == 1);
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wasmer_value_tag *returns_sig = malloc(sizeof(wasmer_value_tag) * returns_arity);
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wasmer_func_returns(func, returns_sig , returns_arity);
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assert(returns_sig[0] == WASM_I32);
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free(returns_sig);
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// wasmer_value_t param_one;
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// param_one.tag = WASM_I32;
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// param_one.value.I32 = 7;
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// wasmer_value_t param_two;
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// param_two.tag = WASM_I32;
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// param_two.value.I32 = 8;
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// wasmer_value_t params[] = {param_one, param_two};
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// wasmer_value_t result_one;
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// wasmer_value_t results[] = {result_one};
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//
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// wasmer_result_t call_result = wasmer_func_call(func, params, 2, results, 1);
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// printf("Call result: %d\n", call_result);
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// printf("Result: %d\n", results[0].value.I32);
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// assert(results[0].value.I32 == 15);
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// assert(call_result == WASMER_OK);
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printf("Destroy instance\n");
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wasmer_instance_destroy(instance);
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printf("Destroy exports\n");
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wasmer_exports_destroy(exports);
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return 0;
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} |