Upgrade V8 to 5.1.281.57 DO NOT MERGE
FPIIM-449
Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/test/mjsunit/wasm/wasm-module-builder.js b/test/mjsunit/wasm/wasm-module-builder.js
new file mode 100644
index 0000000..e1d9963
--- /dev/null
+++ b/test/mjsunit/wasm/wasm-module-builder.js
@@ -0,0 +1,335 @@
+// Copyright 2016 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.
+
+function WasmFunctionBuilder(name, sig_index) {
+ this.name = name;
+ this.sig_index = sig_index;
+ this.exports = [];
+}
+
+WasmFunctionBuilder.prototype.exportAs = function(name) {
+ this.exports.push(name);
+ return this;
+}
+
+WasmFunctionBuilder.prototype.exportFunc = function() {
+ this.exports.push(this.name);
+ return this;
+}
+
+WasmFunctionBuilder.prototype.addBody = function(body) {
+ this.body = body;
+ return this;
+}
+
+WasmFunctionBuilder.prototype.addLocals = function(locals) {
+ this.locals = locals;
+ return this;
+}
+
+function WasmModuleBuilder() {
+ this.signatures = [];
+ this.imports = [];
+ this.functions = [];
+ this.exports = [];
+ this.function_table = [];
+ this.data_segments = [];
+ this.explicit = [];
+ return this;
+}
+
+WasmModuleBuilder.prototype.addStart = function(start_index) {
+ this.start_index = start_index;
+}
+
+WasmModuleBuilder.prototype.addMemory = function(min, max, exp) {
+ this.memory = {min: min, max: max, exp: exp};
+ return this;
+}
+
+WasmModuleBuilder.prototype.addExplicitSection = function(bytes) {
+ this.explicit.push(bytes);
+ return this;
+}
+
+// Add a signature; format is [rettype, param0, param1, ...]
+WasmModuleBuilder.prototype.addSignature = function(sig) {
+ // TODO: canonicalize signatures?
+ this.signatures.push(sig);
+ return this.signatures.length - 1;
+}
+
+WasmModuleBuilder.prototype.addFunction = function(name, sig) {
+ var sig_index = (typeof sig) == "number" ? sig : this.addSignature(sig);
+ var func = new WasmFunctionBuilder(name, sig_index);
+ func.index = this.functions.length;
+ this.functions.push(func);
+ return func;
+}
+
+WasmModuleBuilder.prototype.addImportWithModule = function(module, name, sig) {
+ var sig_index = (typeof sig) == "number" ? sig : this.addSignature(sig);
+ this.imports.push({module: module, name: name, sig_index: sig_index});
+ return this.imports.length - 1;
+}
+
+WasmModuleBuilder.prototype.addImport = function(name, sig) {
+ var sig_index = (typeof sig) == "number" ? sig : this.addSignature(sig);
+ this.imports.push({module: name, name: undefined, sig_index: sig_index});
+ return this.imports.length - 1;
+}
+
+WasmModuleBuilder.prototype.addDataSegment = function(addr, data, init) {
+ this.data_segments.push({addr: addr, data: data, init: init});
+ return this.data_segments.length - 1;
+}
+
+WasmModuleBuilder.prototype.appendToFunctionTable = function(array) {
+ this.function_table = this.function_table.concat(array);
+ return this;
+}
+
+function emit_u8(bytes, val) {
+ bytes.push(val & 0xff);
+}
+
+function emit_u16(bytes, val) {
+ bytes.push(val & 0xff);
+ bytes.push((val >> 8) & 0xff);
+}
+
+function emit_u32(bytes, val) {
+ bytes.push(val & 0xff);
+ bytes.push((val >> 8) & 0xff);
+ bytes.push((val >> 16) & 0xff);
+ bytes.push((val >> 24) & 0xff);
+}
+
+function emit_string(bytes, string) {
+ emit_varint(bytes, string.length);
+ for (var i = 0; i < string.length; i++) {
+ emit_u8(bytes, string.charCodeAt(i));
+ }
+}
+
+function emit_varint(bytes, val) {
+ while (true) {
+ var v = val & 0xff;
+ val = val >>> 7;
+ if (val == 0) {
+ bytes.push(v);
+ break;
+ }
+ bytes.push(v | 0x80);
+ }
+}
+
+function emit_bytes(bytes, data) {
+ for (var i = 0; i < data.length; i++) {
+ bytes.push(data[i] & 0xff);
+ }
+}
+
+function emit_section(bytes, section_code, content_generator) {
+ // Start the section in a temporary buffer: its full length isn't know yet.
+ var tmp_bytes = [];
+ emit_string(tmp_bytes, section_names[section_code]);
+ content_generator(tmp_bytes);
+ // Now that we know the section length, emit it and copy the section.
+ emit_varint(bytes, tmp_bytes.length);
+ Array.prototype.push.apply(bytes, tmp_bytes);
+}
+
+WasmModuleBuilder.prototype.toArray = function(debug) {
+ // Add header bytes
+ var bytes = [];
+ bytes = bytes.concat([kWasmH0, kWasmH1, kWasmH2, kWasmH3,
+ kWasmV0, kWasmV1, kWasmV2, kWasmV3]);
+
+ var wasm = this;
+
+ // Add memory section
+ if (wasm.memory != undefined) {
+ if (debug) print("emitting memory @ " + bytes.length);
+ emit_section(bytes, kDeclMemory, function(bytes) {
+ emit_varint(bytes, wasm.memory.min);
+ emit_varint(bytes, wasm.memory.max);
+ emit_u8(bytes, wasm.memory.exp ? 1 : 0);
+ });
+ }
+
+ // Add signatures section
+ if (wasm.signatures.length > 0) {
+ if (debug) print("emitting signatures @ " + bytes.length);
+ emit_section(bytes, kDeclSignatures, function(bytes) {
+ emit_varint(bytes, wasm.signatures.length);
+ for (sig of wasm.signatures) {
+ var params = sig.length - 1;
+ emit_varint(bytes, params);
+ for (var j = 0; j < sig.length; j++) {
+ emit_u8(bytes, sig[j]);
+ }
+ }
+ });
+ }
+
+ // Add imports section
+ if (wasm.imports.length > 0) {
+ if (debug) print("emitting imports @ " + bytes.length);
+ emit_section(bytes, kDeclImportTable, function(bytes) {
+ emit_varint(bytes, wasm.imports.length);
+ for (imp of wasm.imports) {
+ emit_varint(bytes, imp.sig_index);
+ emit_string(bytes, imp.module);
+ emit_string(bytes, imp.name || '');
+ }
+ });
+ }
+
+ // Add functions section
+ var names = false;
+ var exports = 0;
+ if (wasm.functions.length > 0) {
+ var has_names = false;
+
+ // emit function signatures
+ if (debug) print("emitting function sigs @ " + bytes.length);
+ emit_section(bytes, kDeclFunctionSignatures, function(bytes) {
+ emit_varint(bytes, wasm.functions.length);
+ for (func of wasm.functions) {
+ has_names = has_names || (func.name != undefined &&
+ func.name.length > 0);
+ exports += func.exports.length;
+
+ emit_varint(bytes, func.sig_index);
+ }
+ });
+
+ // emit function bodies
+ if (debug) print("emitting function bodies @ " + bytes.length);
+ emit_section(bytes, kDeclFunctionBodies, function(bytes) {
+ emit_varint(bytes, wasm.functions.length);
+ for (func of wasm.functions) {
+ // Function body length will be patched later.
+ var local_decls = [];
+ var l = func.locals;
+ if (l != undefined) {
+ var local_decls_count = 0;
+ if (l.i32_count > 0) {
+ local_decls.push({count: l.i32_count, type: kAstI32});
+ }
+ if (l.i64_count > 0) {
+ local_decls.push({count: l.i64_count, type: kAstI64});
+ }
+ if (l.f32_count > 0) {
+ local_decls.push({count: l.f32_count, type: kAstF32});
+ }
+ if (l.f64_count > 0) {
+ local_decls.push({count: l.f64_count, type: kAstF64});
+ }
+ }
+ var header = new Array();
+
+ emit_varint(header, local_decls.length);
+ for (decl of local_decls) {
+ emit_varint(header, decl.count);
+ emit_u8(header, decl.type);
+ }
+
+ emit_varint(bytes, header.length + func.body.length);
+ emit_bytes(bytes, header);
+ emit_bytes(bytes, func.body);
+ }
+ });
+ }
+
+ // emit function names
+ if (has_names) {
+ if (debug) print("emitting names @ " + bytes.length);
+ emit_section(bytes, kDeclNames, function(bytes) {
+ emit_varint(bytes, wasm.functions.length);
+ for (func of wasm.functions) {
+ var name = func.name == undefined ? "" : func.name;
+ emit_string(bytes, name);
+ emit_u8(bytes, 0); // local names count == 0
+ }
+ });
+ }
+
+ // Add start function section.
+ if (wasm.start_index != undefined) {
+ if (debug) print("emitting start function @ " + bytes.length);
+ emit_section(bytes, kDeclStartFunction, function(bytes) {
+ emit_varint(bytes, wasm.start_index);
+ });
+ }
+
+ if (wasm.function_table.length > 0) {
+ if (debug) print("emitting function table @ " + bytes.length);
+ emit_section(bytes, kDeclFunctionTable, function(bytes) {
+ emit_varint(bytes, wasm.function_table.length);
+ for (index of wasm.function_table) {
+ emit_varint(bytes, index);
+ }
+ });
+ }
+
+ if (exports > 0) {
+ if (debug) print("emitting exports @ " + bytes.length);
+ emit_section(bytes, kDeclExportTable, function(bytes) {
+ emit_varint(bytes, exports);
+ for (func of wasm.functions) {
+ for (exp of func.exports) {
+ emit_varint(bytes, func.index);
+ emit_string(bytes, exp);
+ }
+ }
+ });
+ }
+
+ if (wasm.data_segments.length > 0) {
+ if (debug) print("emitting data segments @ " + bytes.length);
+ emit_section(bytes, kDeclDataSegments, function(bytes) {
+ emit_varint(bytes, wasm.data_segments.length);
+ for (seg of wasm.data_segments) {
+ emit_varint(bytes, seg.addr);
+ emit_varint(bytes, seg.data.length);
+ emit_bytes(bytes, seg.data);
+ }
+ });
+ }
+
+ // Emit any explicitly added sections
+ for (exp of wasm.explicit) {
+ if (debug) print("emitting explicit @ " + bytes.length);
+ emit_bytes(bytes, exp);
+ }
+
+ // End the module.
+ if (debug) print("emitting end @ " + bytes.length);
+ emit_section(bytes, kDeclEnd, function(bytes) {});
+
+ return bytes;
+}
+
+WasmModuleBuilder.prototype.toBuffer = function(debug) {
+ var bytes = this.toArray(debug);
+ var buffer = new ArrayBuffer(bytes.length);
+ var view = new Uint8Array(buffer);
+ for (var i = 0; i < bytes.length; i++) {
+ var val = bytes[i];
+ if ((typeof val) == "string") val = val.charCodeAt(0);
+ view[i] = val | 0;
+ }
+ return buffer;
+}
+
+WasmModuleBuilder.prototype.instantiate = function(ffi, memory) {
+ var buffer = this.toBuffer();
+ if (memory != undefined) {
+ return Wasm.instantiateModule(buffer, ffi, memory);
+ } else {
+ return Wasm.instantiateModule(buffer, ffi);
+ }
+}