690ac5760c
When exporting an imported wasm function, we generate a js-to-wasm wrapper which calls the wasm-to-wasm wrapper (which then tail-calls the WasmCompileLazy stub). This wasm-to-wasm wrapper also needs to be patched. R=titzer@chromium.org Bug: chromium:788441, v8:5991 Change-Id: Ibf27618a0511851cb55714b720fe7299a21c2959 Reviewed-on: https://chromium-review.googlesource.com/795990 Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#49715}
64 lines
2.2 KiB
JavaScript
64 lines
2.2 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --wasm-lazy-compilation
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load('test/mjsunit/wasm/wasm-constants.js');
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load('test/mjsunit/wasm/wasm-module-builder.js');
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(function importFromOtherInstance() {
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print(arguments.callee.name);
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const builder1 = new WasmModuleBuilder();
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builder1.addFunction('func', kSig_v_v).addBody([]).exportFunc();
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const instance1 = builder1.instantiate();
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const builder2 = new WasmModuleBuilder();
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builder2.addImport('mod', 'fn', kSig_v_v);
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builder2.instantiate({mod: {fn: instance1.exports.func}});
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})();
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(function testWasmToWasmWithDifferentMemory() {
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print(arguments.callee.name);
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const builder1 = new WasmModuleBuilder();
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builder1.addMemory(1, 1, true);
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builder1.addFunction('store', kSig_v_i)
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.addBody([
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kExprI32Const, 0, // i32.const 1
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kExprGetLocal, 0, // get_local 0
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kExprI32StoreMem, 0, 0, // i32.store offset=0 align=0
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])
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.exportFunc();
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const instance1 = builder1.instantiate();
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const mem1 = new Int32Array(instance1.exports.memory.buffer);
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const builder2 = new WasmModuleBuilder();
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builder2.addMemory(1, 1, true);
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builder2.addImport('mod', 'store', kSig_v_i);
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builder2.addFunction('call_store', kSig_v_i)
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.addBody([kExprGetLocal, 0, kExprCallFunction, 0])
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.exportFunc();
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const instance2 = builder2.instantiate({mod: {store: instance1.exports.store}});
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const mem2 = new Int32Array(instance2.exports.memory.buffer);
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assertEquals(0, mem1[0]);
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assertEquals(0, mem2[0]);
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instance2.exports.call_store(3);
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assertEquals(3, mem1[0]);
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assertEquals(0, mem2[0]);
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})();
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(function exportImportedFunction() {
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print(arguments.callee.name);
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const builder1 = new WasmModuleBuilder();
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builder1.addFunction('foo', kSig_v_v).addBody([]).exportAs('foo');
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const instance1 = builder1.instantiate();
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const builder2 = new WasmModuleBuilder();
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const imp_idx = builder2.addImport('A', 'foo', kSig_v_v);
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builder2.addExport('foo', imp_idx);
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const instance2 = builder2.instantiate({A: instance1.exports});
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instance2.exports.foo();
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})();
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