Initial import of v8-native WASM.

test/mjsunit/wasm/ffi.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+load("test/mjsunit/wasm/wasm-constants.js");
+
+function testCallFFI(func, check) {
+  var kBodySize = 6;
+  var kNameFunOffset = 24 + kBodySize + 1;
+  var kNameMainOffset = kNameFunOffset + 4;
+
+  var ffi = new Object();
+  ffi.fun = func;
+
+  var data = bytes(
+    // signatures
+    kDeclSignatures, 1,
+    2, kAstI32, kAstF64, kAstF64, // (f64,f64) -> int
+    // -- foreign function
+    kDeclFunctions, 2,
+    kDeclFunctionName | kDeclFunctionImport,
+    0, 0,
+    kNameFunOffset, 0, 0, 0,    // name offset
+    // -- main function
+    kDeclFunctionName | kDeclFunctionExport,
+    0, 0,
+    kNameMainOffset, 0, 0, 0,   // name offset
+    kBodySize, 0,
+    // main body
+    kExprCallFunction, 0,       // --
+    kExprGetLocal, 0,           // --
+    kExprGetLocal, 1,           // --
+    // names
+    kDeclEnd,
+    'f', 'u', 'n', 0,           //  --
+    'm', 'a', 'i', 'n', 0       //  --
+  );
+
+  var module = WASM.instantiateModule(data, ffi);
+
+  assertEquals("function", typeof module.main);
+
+  for (var i = 0; i < 100000; i += 10003) {
+    var a = 22.5 + i, b = 10.5 + i;
+    var r = module.main(a, b);
+    check(r, a, b);
+  }
+}
+
+var global = (function() { return this; })();
+var params = [-99, -99, -99, -99];
+var was_called = false;
+var length = -1;
+
+function FOREIGN_SUB(a, b) {
+  print("FOREIGN_SUB(" + a + ", " + b + ")");
+  was_called = true;
+  params[0] = this;
+  params[1] = a;
+  params[2] = b;
+  return (a - b) | 0;
+}
+
+function check_FOREIGN_SUB(r, a, b) {
+    assertEquals(a - b | 0, r);
+    assertTrue(was_called);
+//    assertEquals(global, params[0]);  // sloppy mode
+    assertEquals(a, params[1]);
+    assertEquals(b, params[2]);
+    was_called = false;
+}
+
+testCallFFI(FOREIGN_SUB, check_FOREIGN_SUB);
+
+
+function FOREIGN_ABCD(a, b, c, d) {
+  print("FOREIGN_ABCD(" + a + ", " + b + ", " + c + ", " + d + ")");
+  was_called = true;
+  params[0] = this;
+  params[1] = a;
+  params[2] = b;
+  params[3] = c;
+  params[4] = d;
+  return (a * b * 6) | 0;
+}
+
+function check_FOREIGN_ABCD(r, a, b) {
+    assertEquals((a * b * 6) | 0, r);
+    assertTrue(was_called);
+//    assertEquals(global, params[0]);  // sloppy mode.
+    assertEquals(a, params[1]);
+    assertEquals(b, params[2]);
+    assertEquals(undefined, params[3]);
+    assertEquals(undefined, params[4]);
+    was_called = false;
+}
+
+testCallFFI(FOREIGN_ABCD, check_FOREIGN_ABCD);
+
+function FOREIGN_ARGUMENTS0() {
+  print("FOREIGN_ARGUMENTS0");
+  was_called = true;
+  length = arguments.length;
+  for (var i = 0; i < arguments.length; i++) {
+    params[i] = arguments[i];
+  }
+  return (arguments[0] * arguments[1] * 7) | 0;
+}
+
+function FOREIGN_ARGUMENTS1(a) {
+  print("FOREIGN_ARGUMENTS1", a);
+  was_called = true;
+  length = arguments.length;
+  for (var i = 0; i < arguments.length; i++) {
+    params[i] = arguments[i];
+  }
+  return (arguments[0] * arguments[1] * 7) | 0;
+}
+
+function FOREIGN_ARGUMENTS2(a, b) {
+  print("FOREIGN_ARGUMENTS2", a, b);
+  was_called = true;
+  length = arguments.length;
+  for (var i = 0; i < arguments.length; i++) {
+    params[i] = arguments[i];
+  }
+  return (a * b * 7) | 0;
+}
+
+function FOREIGN_ARGUMENTS3(a, b, c) {
+  print("FOREIGN_ARGUMENTS3", a, b, c);
+  was_called = true;
+  length = arguments.length;
+  for (var i = 0; i < arguments.length; i++) {
+    params[i] = arguments[i];
+  }
+  return (a * b * 7) | 0;
+}
+
+function FOREIGN_ARGUMENTS4(a, b, c, d) {
+  print("FOREIGN_ARGUMENTS4", a, b, c, d);
+  was_called = true;
+  length = arguments.length;
+  for (var i = 0; i < arguments.length; i++) {
+    params[i] = arguments[i];
+  }
+  return (a * b * 7) | 0;
+}
+
+function check_FOREIGN_ARGUMENTS(r, a, b) {
+  assertEquals((a * b * 7) | 0, r);
+  assertTrue(was_called);
+  assertEquals(2, length);
+  assertEquals(a, params[0]);
+  assertEquals(b, params[1]);
+  was_called = false;
+}
+
+// Check a bunch of uses of the arguments object.
+testCallFFI(FOREIGN_ARGUMENTS0, check_FOREIGN_ARGUMENTS);
+testCallFFI(FOREIGN_ARGUMENTS1, check_FOREIGN_ARGUMENTS);
+testCallFFI(FOREIGN_ARGUMENTS2, check_FOREIGN_ARGUMENTS);
+testCallFFI(FOREIGN_ARGUMENTS3, check_FOREIGN_ARGUMENTS);
+testCallFFI(FOREIGN_ARGUMENTS4, check_FOREIGN_ARGUMENTS);
+
+function returnValue(val) {
+  return function(a, b) {
+    print("RETURN_VALUE ", val);
+    return val;
+  }
+}
+
+
+function checkReturn(expected) {
+  return function(r, a, b) { assertEquals(expected, r); }
+}
+
+// Check that returning weird values doesn't crash
+testCallFFI(returnValue(undefined), checkReturn(0));
+testCallFFI(returnValue(null), checkReturn(0));
+testCallFFI(returnValue("0"), checkReturn(0));
+testCallFFI(returnValue("-77"), checkReturn(-77));
+
+var objWithValueOf = {valueOf: function() { return 198; }}
+
+testCallFFI(returnValue(objWithValueOf), checkReturn(198));
+
+
+function testCallBinopVoid(type, func, check) {
+  var kBodySize = 10;
+  var kNameFunOffset = 28 + kBodySize + 1;
+  var kNameMainOffset = kNameFunOffset + 4;
+
+  var ffi = new Object();
+
+  var passed_length = -1;
+  var passed_a = -1;
+  var passed_b = -1;
+  var args_a = -1;
+  var args_b = -1;
+
+  ffi.fun = function(a, b) {
+    passed_length = arguments.length;
+    passed_a = a;
+    passed_b = b;
+    args_a = arguments[0];
+    args_b = arguments[1];
+  }
+
+  var data = bytes(
+    // -- signatures
+    kDeclSignatures, 2,
+    2, kAstStmt, type, type,    // (type,type)->void
+    2, kAstI32, type, type,     // (type,type)->int
+    // -- foreign function
+    kDeclFunctions, 2,
+    kDeclFunctionName | kDeclFunctionImport,
+    0, 0,                       // signature index
+    kNameFunOffset, 0, 0, 0,    // name offset
+    // -- main function
+    kDeclFunctionName | kDeclFunctionExport,
+    1, 0,                       // signature index
+    kNameMainOffset, 0, 0, 0,   // name offset
+    kBodySize, 0,               // body size
+    // main body
+    kExprBlock, 2,              // --
+    kExprCallFunction, 0,       // --
+    kExprGetLocal, 0,           // --
+    kExprGetLocal, 1,           // --
+    kExprI8Const, 99,           // --
+    // names
+    kDeclEnd,
+    'f', 'u', 'n', 0,           // --
+    'm', 'a', 'i', 'n', 0       // --
+  );
+
+  var module = WASM.instantiateModule(data, ffi);
+
+  assertEquals("function", typeof module.main);
+
+  print("testCallBinopVoid", type);
+
+  for (var i = 0; i < 100000; i += 10003.1) {
+    var a = 22.5 + i, b = 10.5 + i;
+    var r = module.main(a, b);
+    assertEquals(99, r);
+    assertEquals(2, passed_length);
+    var expected_a, expected_b;
+    switch (type) {
+      case kAstI32: {
+        expected_a = a | 0;
+        expected_b = b | 0;
+        break;
+      }
+      case kAstF32: {
+        expected_a = Math.fround(a);
+        expected_b = Math.fround(b);
+        break;
+      }
+      case kAstF64: {
+        expected_a = a;
+        expected_b = b;
+        break;
+      }
+    }
+
+    assertEquals(expected_a, args_a);
+    assertEquals(expected_b, args_b);
+    assertEquals(expected_a, passed_a);
+    assertEquals(expected_b, passed_b);
+  }
+}
+
+
+testCallBinopVoid(kAstI32);
+// TODO testCallBinopVoid(kAstI64);
+testCallBinopVoid(kAstF32);
+testCallBinopVoid(kAstF64);
+
+
+
+function testCallPrint() {
+  var kBodySize = 10;
+  var kNamePrintOffset = 10 + 7 + 7 + 9 + kBodySize + 1;
+  var kNameMainOffset = kNamePrintOffset + 6;
+
+  var ffi = new Object();
+  ffi.print = print;
+
+  var data = bytes(
+    // -- signatures
+    kDeclSignatures, 2,
+    1, kAstStmt, kAstI32,       // i32->void
+    1, kAstStmt, kAstF64,       // f64->int
+    kDeclFunctions, 3,
+    // -- import print i32
+    kDeclFunctionName | kDeclFunctionImport,
+    0, 0,                       // signature index
+    kNamePrintOffset, 0, 0, 0,  // name offset
+    // -- import print f64
+    kDeclFunctionName | kDeclFunctionImport,
+    1, 0,                       // signature index
+    kNamePrintOffset, 0, 0, 0,  // name offset
+    // -- decl main
+    kDeclFunctionName | kDeclFunctionExport,
+    1, 0,                       // signature index
+    kNameMainOffset, 0, 0, 0,   // name offset
+    kBodySize, 0,               // body size
+    // main body
+    kExprBlock, 2,              // --
+    kExprCallFunction, 0,       // --
+    kExprI8Const, 97,           // --
+    kExprCallFunction, 1,       // --
+    kExprGetLocal, 0,           // --
+    // names
+    kDeclEnd,
+    'p', 'r', 'i', 'n', 't', 0, // --
+    'm', 'a', 'i', 'n', 0       // --
+  );
+
+  var module = WASM.instantiateModule(data, ffi);
+
+  assertEquals("function", typeof module.main);
+
+  for (var i = -9; i < 900; i += 6.125) {
+      module.main(i);
+  }
+}
+
+testCallPrint();
+testCallPrint();