[wasm] Add support for import section.

test/mjsunit/wasm/import-table.js

Index: test/mjsunit/wasm/import-table.js
diff --git a/test/mjsunit/wasm/ffi.js b/test/mjsunit/wasm/import-table.js
similarity index 85%
copy from test/mjsunit/wasm/ffi.js
copy to test/mjsunit/wasm/import-table.js
index 95d655dc6dfdcfbe1746bea3e3e5d4538a72bba4..0ee9577569f58c970308338dd8e9c73d297fdcec 100644
--- a/test/mjsunit/wasm/ffi.js
+++ b/test/mjsunit/wasm/import-table.js
@@ -6,9 +6,9 @@
 
 load("test/mjsunit/wasm/wasm-constants.js");
 
-function testCallFFI(func, check) {
+function testCallImport(func, check) {
   var kBodySize = 6;
-  var kNameFunOffset = 24 + kBodySize + 1;
+  var kNameFunOffset = 29 + kBodySize + 1;
   var kNameMainOffset = kNameFunOffset + 4;
 
   var ffi = new Object();
@@ -18,24 +18,27 @@ function testCallFFI(func, check) {
     // 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
+    kDeclFunctions,
+    1,
     kDeclFunctionName | kDeclFunctionExport,
     0, 0,
-    kNameMainOffset, 0, 0, 0,   // name offset
+    kNameMainOffset, 0, 0, 0,    // name offset
     kBodySize, 0,
     // main body
-    kExprCallFunction, 0,       // --
-    kExprGetLocal, 0,           // --
-    kExprGetLocal, 1,           // --
+    kExprCallImport, 0,          // --
+    kExprGetLocal, 0,            // --
+    kExprGetLocal, 1,            // --
+    // imports
+    kDeclImportTable,
+    1,
+    0, 0,                        // sig index
+    0, 0, 0, 0,                  // module name offset
+    kNameFunOffset, 0, 0, 0,     // function name offset
     // names
     kDeclEnd,
-    'f', 'u', 'n', 0,           //  --
-    'm', 'a', 'i', 'n', 0       //  --
+    'f', 'u', 'n', 0,            // --
+    'm', 'a', 'i', 'n', 0        // --
   );
 
   var module = _WASMEXP_.instantiateModule(data, ffi);
@@ -72,7 +75,7 @@ function check_FOREIGN_SUB(r, a, b) {
     was_called = false;
 }
 
-testCallFFI(FOREIGN_SUB, check_FOREIGN_SUB);
+testCallImport(FOREIGN_SUB, check_FOREIGN_SUB);
 
 
 function FOREIGN_ABCD(a, b, c, d) {
@@ -97,7 +100,7 @@ function check_FOREIGN_ABCD(r, a, b) {
     was_called = false;
 }
 
-testCallFFI(FOREIGN_ABCD, check_FOREIGN_ABCD);
+testCallImport(FOREIGN_ABCD, check_FOREIGN_ABCD);
 
 function FOREIGN_ARGUMENTS0() {
   print("FOREIGN_ARGUMENTS0");
@@ -159,11 +162,11 @@ function check_FOREIGN_ARGUMENTS(r, a, b) {
 }
 
 // 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);
+testCallImport(FOREIGN_ARGUMENTS0, check_FOREIGN_ARGUMENTS);
+testCallImport(FOREIGN_ARGUMENTS1, check_FOREIGN_ARGUMENTS);
+testCallImport(FOREIGN_ARGUMENTS2, check_FOREIGN_ARGUMENTS);
+testCallImport(FOREIGN_ARGUMENTS3, check_FOREIGN_ARGUMENTS);
+testCallImport(FOREIGN_ARGUMENTS4, check_FOREIGN_ARGUMENTS);
 
 function returnValue(val) {
   return function(a, b) {
@@ -178,14 +181,14 @@ function checkReturn(expected) {
 }
 
 // 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));
+testCallImport(returnValue(undefined), checkReturn(0));
+testCallImport(returnValue(null), checkReturn(0));
+testCallImport(returnValue("0"), checkReturn(0));
+testCallImport(returnValue("-77"), checkReturn(-77));
 
 var objWithValueOf = {valueOf: function() { return 198; }}
 
-testCallFFI(returnValue(objWithValueOf), checkReturn(198));
+testCallImport(returnValue(objWithValueOf), checkReturn(198));
 
 
 function testCallBinopVoid(type, func, check) {