test: implement "register" action of WAST

1 files changed, 106 insertions, 98 deletions

diff --git a/examples/php-on-wasm/php-wasm.php b/examples/php-on-wasm/php-wasm.php
index 96625b8..336602c 100644
--- a/examples/php-on-wasm/php-wasm.php
+++ b/examples/php-on-wasm/php-wasm.php
@@ -6,6 +6,7 @@ require_once __DIR__ . '/../../vendor/autoload.php';
 
 use Nsfisis\Waddiwasi\BinaryFormat\Decoder;
 use Nsfisis\Waddiwasi\BinaryFormat\InvalidBinaryFormatException;
+use Nsfisis\Waddiwasi\Execution\Extern;
 use Nsfisis\Waddiwasi\Execution\FuncInst;
 use Nsfisis\Waddiwasi\Execution\Refs;
 use Nsfisis\Waddiwasi\Execution\Runtime;
@@ -31,107 +32,114 @@ try {
     exit(1);
 }
 
-$hostFuncs = [
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env__invoke_iii(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiii(...)),
-    makeHostFunc('(i32) -> ()', hostFunc__env__invoke_v(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env__invoke_ii(...)),
-    makeHostFunc('() -> ()', hostFunc__env__abort(...)),
-    makeHostFunc('(i32) -> ()', hostFunc__env__exit(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viii(...)),
-    makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env__invoke_vii(...)),
-    makeHostFunc('(i32, i32) -> ()', hostFunc__env__invoke_vi(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env__invoke_i(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiiii(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiii(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env____assert_fail(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiii(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiiii(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiii(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiiiiiii(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__strftime(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__getaddrinfo(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__gethostbyname_r(...)),
-    makeHostFunc('() -> (i32)', hostFunc__env__getdtablesize(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env__getprotobyname(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env__getprotobynumber(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env__strptime(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__getnameinfo(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiiiii(...)),
-    makeHostFunc('(i32, i32, i32, f64, i32, i32) -> ()', hostFunc__env__invoke_viidii(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env__getcontext(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env__makecontext(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env__swapcontext(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__environ_sizes_get(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__environ_get(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_fcntl64(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_ioctl(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_close(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_read(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_write(...)),
-    makeHostFunc('(i32) -> ()', hostFunc__wasi_snapshot_preview1__proc_exit(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_faccessat(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_chdir(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_chmod(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_fchownat(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_dup(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_dup3(...)),
-    makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env__emscripten_memcpy_js(...)),
-    makeHostFunc('() -> (f64)', hostFunc__env__emscripten_date_now(...)),
-    makeHostFunc('() -> (i32)', hostFunc__env___emscripten_get_now_is_monotonic(...)),
-    makeHostFunc('() -> (f64)', hostFunc__env__emscripten_get_now(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_fdatasync(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_openat(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_fstat64(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_stat64(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_newfstatat(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_lstat64(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_sync(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_getcwd(...)),
-    makeHostFunc('(i32) -> ()', hostFunc__env__emscripten_err(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_fdstat_get(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_mkdirat(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_pipe(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_poll(...)),
-    makeHostFunc('(i32, i32) -> ()', hostFunc__env____call_sighandler(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_getdents64(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_readlinkat(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_renameat(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_rmdir(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall__newselect(...)),
-    makeHostFunc('(i32, f64) -> (i32)', hostFunc__env___setitimer_js(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_statfs64(...)),
-    makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_symlink(...)),
-    makeHostFunc('() -> (i32)', hostFunc__env__emscripten_get_heap_max(...)),
-    makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___tzset_js(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_unlinkat(...)),
-    makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_utimensat(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env__emscripten_resize_heap(...)),
-    makeHostFunc('() -> ()', hostFunc__env___emscripten_throw_longjmp(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_accept4(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_bind(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_connect(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getpeername(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getsockname(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getsockopt(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_listen(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_recvfrom(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_sendto(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_socket(...)),
-    makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_ftruncate64(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_seek(...)),
-    makeHostFunc('(i32) -> (i32)', hostFunc__env___mktime_js(...)),
-    makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___localtime_js(...)),
-    makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___gmtime_js(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env___munmap_js(...)),
-    makeHostFunc('(i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env___mmap_js(...)),
+$importModules = [
+    'env' => [
+        'invoke_iii' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env__invoke_iii(...)),
+        'invoke_iiiii' => makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiii(...)),
+        'invoke_v' => makeHostFunc('(i32) -> ()', hostFunc__env__invoke_v(...)),
+        'invoke_ii' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env__invoke_ii(...)),
+        'abort' => makeHostFunc('() -> ()', hostFunc__env__abort(...)),
+        'exit' => makeHostFunc('(i32) -> ()', hostFunc__env__exit(...)),
+        'invoke_viii' => makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viii(...)),
+        'invoke_vii' => makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env__invoke_vii(...)),
+        'invoke_vi' => makeHostFunc('(i32, i32) -> ()', hostFunc__env__invoke_vi(...)),
+        'invoke_i' => makeHostFunc('(i32) -> (i32)', hostFunc__env__invoke_i(...)),
+        'invoke_iiiiiii' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiiii(...)),
+        'invoke_iiii' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiii(...)),
+        '__assert_fail' => makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env____assert_fail(...)),
+        'invoke_viiii' => makeHostFunc('(i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiii(...)),
+        'invoke_viiiii' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiiii(...)),
+        'invoke_iiiiii' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiii(...)),
+        'invoke_iiiiiiiiii' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__invoke_iiiiiiiiii(...)),
+        'strftime' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__strftime(...)),
+        'getaddrinfo' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env__getaddrinfo(...)),
+        'gethostbyname_r' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__gethostbyname_r(...)),
+        'getdtablesize' => makeHostFunc('() -> (i32)', hostFunc__env__getdtablesize(...)),
+        'getprotobyname' => makeHostFunc('(i32) -> (i32)', hostFunc__env__getprotobyname(...)),
+        'getprotobynumber' => makeHostFunc('(i32) -> (i32)', hostFunc__env__getprotobynumber(...)),
+        'strptime' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env__strptime(...)),
+        'getnameinfo' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env__getnameinfo(...)),
+        'invoke_viiiiii' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> ()', hostFunc__env__invoke_viiiiii(...)),
+        'invoke_viidii' => makeHostFunc('(i32, i32, i32, f64, i32, i32) -> ()', hostFunc__env__invoke_viidii(...)),
+        'getcontext' => makeHostFunc('(i32) -> (i32)', hostFunc__env__getcontext(...)),
+        'makecontext' => makeHostFunc('(i32, i32, i32, i32) -> ()', hostFunc__env__makecontext(...)),
+        'swapcontext' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env__swapcontext(...)),
+        '__syscall_fcntl64' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_fcntl64(...)),
+        '__syscall_ioctl' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_ioctl(...)),
+        '__syscall_faccessat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_faccessat(...)),
+        '__syscall_chdir' => makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_chdir(...)),
+        '__syscall_chmod' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_chmod(...)),
+        '__syscall_fchownat' => makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_fchownat(...)),
+        '__syscall_dup' => makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_dup(...)),
+        '__syscall_dup3' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_dup3(...)),
+        'emscripten_memcpy_js' => makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env__emscripten_memcpy_js(...)),
+        'emscripten_date_now' => makeHostFunc('() -> (f64)', hostFunc__env__emscripten_date_now(...)),
+        '_emscripten_get_now_is_monotonic' => makeHostFunc('() -> (i32)', hostFunc__env___emscripten_get_now_is_monotonic(...)),
+        'emscripten_get_now' => makeHostFunc('() -> (f64)', hostFunc__env__emscripten_get_now(...)),
+        '__syscall_fdatasync' => makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_fdatasync(...)),
+        '__syscall_openat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_openat(...)),
+        '__syscall_fstat64' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_fstat64(...)),
+        '__syscall_stat64' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_stat64(...)),
+        '__syscall_newfstatat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_newfstatat(...)),
+        '__syscall_lstat64' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_lstat64(...)),
+        '__syscall_getcwd' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_getcwd(...)),
+        'emscripten_err' => makeHostFunc('(i32) -> ()', hostFunc__env__emscripten_err(...)),
+        '__syscall_mkdirat' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_mkdirat(...)),
+        '__syscall_pipe' => makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_pipe(...)),
+        '__syscall_poll' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_poll(...)),
+        '__call_sighandler' => makeHostFunc('(i32, i32) -> ()', hostFunc__env____call_sighandler(...)),
+        '__syscall_getdents64' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_getdents64(...)),
+        '__syscall_readlinkat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_readlinkat(...)),
+        '__syscall_renameat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_renameat(...)),
+        '__syscall_rmdir' => makeHostFunc('(i32) -> (i32)', hostFunc__env____syscall_rmdir(...)),
+        '__syscall__newselect' => makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall__newselect(...)),
+        '_setitimer_js' => makeHostFunc('(i32, f64) -> (i32)', hostFunc__env___setitimer_js(...)),
+        '__syscall_statfs64' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_statfs64(...)),
+        '__syscall_symlink' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__env____syscall_symlink(...)),
+        'emscripten_get_heap_max' => makeHostFunc('() -> (i32)', hostFunc__env__emscripten_get_heap_max(...)),
+        '_tzset_js' => makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___tzset_js(...)),
+        '__syscall_unlinkat' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_unlinkat(...)),
+        '__syscall_utimensat' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_utimensat(...)),
+        'emscripten_resize_heap' => makeHostFunc('(i32) -> (i32)', hostFunc__env__emscripten_resize_heap(...)),
+        '_emscripten_throw_longjmp' => makeHostFunc('() -> ()', hostFunc__env___emscripten_throw_longjmp(...)),
+        '__syscall_accept4' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_accept4(...)),
+        '__syscall_bind' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_bind(...)),
+        '__syscall_connect' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_connect(...)),
+        '__syscall_getpeername' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getpeername(...)),
+        '__syscall_getsockname' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getsockname(...)),
+        '__syscall_getsockopt' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_getsockopt(...)),
+        '__syscall_listen' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_listen(...)),
+        '__syscall_recvfrom' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_recvfrom(...)),
+        '__syscall_sendto' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_sendto(...)),
+        '__syscall_socket' => makeHostFunc('(i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env____syscall_socket(...)),
+        '__syscall_ftruncate64' => makeHostFunc('(i32, i32, i32) -> (i32)', hostFunc__env____syscall_ftruncate64(...)),
+        '_mktime_js' => makeHostFunc('(i32) -> (i32)', hostFunc__env___mktime_js(...)),
+        '_localtime_js' => makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___localtime_js(...)),
+        '_gmtime_js' => makeHostFunc('(i32, i32, i32) -> ()', hostFunc__env___gmtime_js(...)),
+        '_munmap_js' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env___munmap_js(...)),
+        '_mmap_js' => makeHostFunc('(i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)', hostFunc__env___mmap_js(...)),
+    ],
+    'wasi_snapshot_preview1' => [
+        'environ_sizes_get' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__environ_sizes_get(...)),
+        'environ_get' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__environ_get(...)),
+        'fd_close' => makeHostFunc('(i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_close(...)),
+        'fd_read' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_read(...)),
+        'fd_write' => makeHostFunc('(i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_write(...)),
+        'proc_exit' => makeHostFunc('(i32) -> ()', hostFunc__wasi_snapshot_preview1__proc_exit(...)),
+        'fd_sync' => makeHostFunc('(i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_sync(...)),
+        'fd_fdstat_get' => makeHostFunc('(i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_fdstat_get(...)),
+        'fd_seek' => makeHostFunc('(i32, i32, i32, i32, i32) -> (i32)', hostFunc__wasi_snapshot_preview1__fd_seek(...)),
+    ],
 ];
+
 $store = Store::empty();
-$externVals = [];
-foreach ($hostFuncs as $hostFunc) {
-    $externVals[] = $store->registerFunc($hostFunc);
+$importObj = [];
+foreach ($importModules as $importModuleName => $importModule) {
+    foreach ($importModule as $importName => $import) {
+        $importObj[$importModuleName][$importName] = Extern::Func($import);
+    }
 }
-$runtime = Runtime::instantiate($store, $module, $externVals);
+$runtime = Runtime::instantiate($store, $module, $importObj);
 $codePtr = allocateStringOnWasmMemory($runtime, PHP_HELLO_WORLD);
 
 $results = $runtime->invoke("php_wasm_run", [$codePtr]);