[wasm] Use the JavaScript WasmModuleBuilder utility in JS tests.

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.
 
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
 
 function testCallFFI(func, check) {
-  var kBodySize = 6;
-  var kNameFunOffset = kHeaderSize + 24 + kBodySize + 1;
-  var kNameMainOffset = kNameFunOffset + 4;
+  var builder = new WasmModuleBuilder();
 
-  var ffi = new Object();
-  ffi.fun = func;
+  var sig_index = builder.addSignature([kAstI32, kAstF64, kAstF64]);
+  builder.addImport("func", sig_index);
+  builder.addFunction("main", sig_index)
+    .addBody([
+      kExprCallImport, 0,       // --
+      kExprGetLocal, 0,         // --
+      kExprGetLocal, 1])        // --
+    .exportFunc();
 
-  var data = bytesWithHeader(
-    // 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 = _WASMEXP_.instantiateModule(data, ffi);
-
-  assertEquals("function", typeof module.main);
+  var main = builder.instantiate({func: func}).exports.main;
 
   for (var i = 0; i < 100000; i += 10003) {
     var a = 22.5 + i, b = 10.5 + i;
-    var r = module.main(a, b);
+    var r = main(a, b);
     check(r, a, b);
   }
 }
 
 var global = (function() { return this; })();
-var params = [-99, -99, -99, -99];
+var params = [-99, -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;
@@ skipping 118 matching lines @@
 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 = kHeaderSize + 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) {
+  ffi = {func: function(a, b) {
     passed_length = arguments.length;
     passed_a = a;
     passed_b = b;
     args_a = arguments[0];
     args_b = arguments[1];
-  }
+  }};
 
-  var data = bytesWithHeader(
-    // -- 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 builder = new WasmModuleBuilder();
 
-  var module = _WASMEXP_.instantiateModule(data, ffi);
+  builder.addImport("func", [kAstStmt, type, type]);
+  builder.addFunction("main", [kAstI32, type, type])
+    .addBody([
+      kExprBlock, 2,          // --
+      kExprCallImport, 0,     // --
+      kExprGetLocal, 0,       // --
+      kExprGetLocal, 1,       // --
+      kExprI8Const, 99])      // --
+    .exportFunc()
 
-  assertEquals("function", typeof module.main);
+  var main = builder.instantiate(ffi).exports.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);
+    var r = 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: {
@@ skipping 17 matching lines @@
 
 
 testCallBinopVoid(kAstI32);
 // TODO testCallBinopVoid(kAstI64);
 testCallBinopVoid(kAstF32);
 testCallBinopVoid(kAstF64);
 
 
 
 function testCallPrint() {
-  var kBodySize = 10;
-  var kNamePrintOffset = kHeaderSize + 10 + 7 + 7 + 9 + kBodySize + 1;
-  var kNameMainOffset = kNamePrintOffset + 6;
+  var builder = new WasmModuleBuilder();
 
-  var ffi = new Object();
-  ffi.print = print;
+  builder.addImport("print", [kAstStmt, kAstI32]);
+  builder.addImport("print", [kAstStmt, kAstF64]);
+  builder.addFunction("main", [kAstStmt, kAstF64])
+    .addBody([
+      kExprBlock, 2,            // --
+      kExprCallImport, 0,       // --
+      kExprI8Const, 97,         // --
+      kExprCallImport, 1,       // --
+      kExprGetLocal, 0])        // --
+    .exportFunc()
 
-  var data = bytesWithHeader(
-    // -- 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 = _WASMEXP_.instantiateModule(data, ffi);
-
-  assertEquals("function", typeof module.main);
-
-  for (var i = -9; i < 900; i += 6.125) {
-      module.main(i);
-  }
+  var main = builder.instantiate({print: print}).exports.main;
+  for (var i = -9; i < 900; i += 6.125) main(i);
 }
 
 testCallPrint();
 testCallPrint();