Liam Appelbe
e2840ed07a
Enabling WASI when building an instance sets up the default WASI imports, and can optionally capture stdout/stderr. I'd like to set up something similar for stdin, but Wasmer doesn't support that yet. I also improved error handling in WasmRuntime by adding Wasmer's last error to the thrown exceptions where appropriate. Bug: https://github.com/dart-lang/sdk/issues/37882 Change-Id: I2d8546e878bcb43c7093490eac085aa62d318e96 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/167904 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Liam Appelbe <liama@google.com>
185 lines
12 KiB
Dart
185 lines
12 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Variant of hello_world_test that uses the default WASI imports.
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import "package:async_helper/async_helper.dart";
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import "package:expect/expect.dart";
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import "package:wasm/wasm.dart";
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import "dart:convert";
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import "dart:typed_data";
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void main() async {
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asyncStart();
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// Hello world module generated by emscripten+WASI. Exports a function like
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// `void _start()`, and prints using `int fd_write(int, int, int, int)`.
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var data = Uint8List.fromList([
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0x03, 0x40, 0x20, 0x01, 0x2d, 0x00, 0x01, 0x21, 0x02, 0x20, 0x01, 0x41,
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0x01, 0x6a, 0x22, 0x00, 0x21, 0x01, 0x20, 0x02, 0x0d, 0x00, 0x0b, 0x0b,
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0x20, 0x00, 0x41, 0x80, 0x08, 0x6b, 0x0b, 0x0c, 0x00, 0x02, 0x7f, 0x41,
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0x00, 0x41, 0x00, 0x10, 0x04, 0x0b, 0x1a, 0x0b, 0x66, 0x01, 0x02, 0x7f,
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0x41, 0x90, 0x08, 0x28, 0x02, 0x00, 0x22, 0x00, 0x28, 0x02, 0x4c, 0x41,
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0x00, 0x4e, 0x04, 0x7f, 0x41, 0x01, 0x05, 0x20, 0x01, 0x0b, 0x1a, 0x02,
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0x40, 0x41, 0x7f, 0x41, 0x00, 0x10, 0x0a, 0x22, 0x01, 0x20, 0x01, 0x20,
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0x00, 0x10, 0x09, 0x47, 0x1b, 0x41, 0x00, 0x48, 0x0d, 0x00, 0x02, 0x40,
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0x20, 0x00, 0x2d, 0x00, 0x4b, 0x41, 0x0a, 0x46, 0x0d, 0x00, 0x20, 0x00,
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0x28, 0x02, 0x14, 0x22, 0x01, 0x20, 0x00, 0x28, 0x02, 0x10, 0x4f, 0x0d,
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0x00, 0x20, 0x00, 0x20, 0x01, 0x41, 0x01, 0x6a, 0x36, 0x02, 0x14, 0x20,
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0x01, 0x41, 0x0a, 0x3a, 0x00, 0x00, 0x0c, 0x01, 0x0b, 0x20, 0x00, 0x10,
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0x06, 0x0b, 0x0b, 0x3d, 0x01, 0x01, 0x7f, 0x20, 0x02, 0x04, 0x40, 0x03,
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0x40, 0x20, 0x00, 0x20, 0x01, 0x20, 0x02, 0x41, 0x80, 0xc0, 0x00, 0x20,
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0x02, 0x41, 0x80, 0xc0, 0x00, 0x49, 0x1b, 0x22, 0x03, 0x10, 0x03, 0x21,
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0x00, 0x20, 0x01, 0x41, 0x80, 0x40, 0x6b, 0x21, 0x01, 0x20, 0x00, 0x41,
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0x80, 0x40, 0x6b, 0x21, 0x00, 0x20, 0x02, 0x20, 0x03, 0x6b, 0x22, 0x02,
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0x0d, 0x00, 0x0b, 0x0b, 0x0b, 0xb1, 0x02, 0x01, 0x06, 0x7f, 0x23, 0x00,
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0x41, 0x20, 0x6b, 0x22, 0x03, 0x24, 0x00, 0x20, 0x03, 0x20, 0x00, 0x28,
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0x02, 0x1c, 0x22, 0x04, 0x36, 0x02, 0x10, 0x20, 0x00, 0x28, 0x02, 0x14,
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0x21, 0x05, 0x20, 0x03, 0x20, 0x02, 0x36, 0x02, 0x1c, 0x20, 0x03, 0x20,
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0x01, 0x36, 0x02, 0x18, 0x20, 0x03, 0x20, 0x05, 0x20, 0x04, 0x6b, 0x22,
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0x01, 0x36, 0x02, 0x14, 0x20, 0x01, 0x20, 0x02, 0x6a, 0x21, 0x06, 0x41,
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0x02, 0x21, 0x05, 0x20, 0x03, 0x41, 0x10, 0x6a, 0x21, 0x01, 0x03, 0x40,
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0x02, 0x40, 0x02, 0x7f, 0x20, 0x06, 0x02, 0x7f, 0x20, 0x00, 0x28, 0x02,
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0x3c, 0x20, 0x01, 0x20, 0x05, 0x20, 0x03, 0x41, 0x0c, 0x6a, 0x10, 0x00,
|
|
0x04, 0x40, 0x20, 0x03, 0x41, 0x7f, 0x36, 0x02, 0x0c, 0x41, 0x7f, 0x0c,
|
|
0x01, 0x0b, 0x20, 0x03, 0x28, 0x02, 0x0c, 0x0b, 0x22, 0x04, 0x46, 0x04,
|
|
0x40, 0x20, 0x00, 0x20, 0x00, 0x28, 0x02, 0x2c, 0x22, 0x01, 0x36, 0x02,
|
|
0x1c, 0x20, 0x00, 0x20, 0x01, 0x36, 0x02, 0x14, 0x20, 0x00, 0x20, 0x01,
|
|
0x20, 0x00, 0x28, 0x02, 0x30, 0x6a, 0x36, 0x02, 0x10, 0x20, 0x02, 0x0c,
|
|
0x01, 0x0b, 0x20, 0x04, 0x41, 0x7f, 0x4a, 0x0d, 0x01, 0x20, 0x00, 0x41,
|
|
0x00, 0x36, 0x02, 0x1c, 0x20, 0x00, 0x42, 0x00, 0x37, 0x03, 0x10, 0x20,
|
|
0x00, 0x20, 0x00, 0x28, 0x02, 0x00, 0x41, 0x20, 0x72, 0x36, 0x02, 0x00,
|
|
0x41, 0x00, 0x20, 0x05, 0x41, 0x02, 0x46, 0x0d, 0x00, 0x1a, 0x20, 0x02,
|
|
0x20, 0x01, 0x28, 0x02, 0x04, 0x6b, 0x0b, 0x21, 0x04, 0x20, 0x03, 0x41,
|
|
0x20, 0x6a, 0x24, 0x00, 0x20, 0x04, 0x0f, 0x0b, 0x20, 0x01, 0x41, 0x08,
|
|
0x6a, 0x20, 0x01, 0x20, 0x04, 0x20, 0x01, 0x28, 0x02, 0x04, 0x22, 0x07,
|
|
0x4b, 0x22, 0x08, 0x1b, 0x22, 0x01, 0x20, 0x04, 0x20, 0x07, 0x41, 0x00,
|
|
0x20, 0x08, 0x1b, 0x6b, 0x22, 0x07, 0x20, 0x01, 0x28, 0x02, 0x00, 0x6a,
|
|
0x36, 0x02, 0x00, 0x20, 0x01, 0x20, 0x01, 0x28, 0x02, 0x04, 0x20, 0x07,
|
|
0x6b, 0x36, 0x02, 0x04, 0x20, 0x06, 0x20, 0x04, 0x6b, 0x21, 0x06, 0x20,
|
|
0x05, 0x20, 0x08, 0x6b, 0x21, 0x05, 0x0c, 0x00, 0x00, 0x0b, 0x00, 0x0b,
|
|
0x0b, 0x4d, 0x06, 0x00, 0x41, 0x80, 0x08, 0x0b, 0x12, 0x68, 0x65, 0x6c,
|
|
0x6c, 0x6f, 0x2c, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x21, 0x00, 0x00,
|
|
0x00, 0x18, 0x04, 0x00, 0x41, 0x98, 0x08, 0x0b, 0x01, 0x05, 0x00, 0x41,
|
|
0xa4, 0x08, 0x0b, 0x01, 0x01, 0x00, 0x41, 0xbc, 0x08, 0x0b, 0x0e, 0x02,
|
|
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xb8, 0x04, 0x00, 0x00, 0x00,
|
|
0x04, 0x00, 0x41, 0xd4, 0x08, 0x0b, 0x01, 0x01, 0x00, 0x41, 0xe3, 0x08,
|
|
0x0b, 0x05, 0x0a, 0xff, 0xff, 0xff, 0xff,
|
|
]);
|
|
|
|
var inst =
|
|
WasmModule(data).instantiate().enableWasi(captureStdout: true).build();
|
|
|
|
var fn = inst.lookupFunction("_start");
|
|
fn();
|
|
var out = utf8.decode(await inst.stdout.first);
|
|
Expect.equals("hello, world!\n", out);
|
|
asyncEnd();
|
|
}
|