Add signed/unsigned 8-bit and 16-bit Representations

test/cctest/test-macro-assembler-ia32.cc

+// Copyright 2009 the V8 project authors. All rights reserved.

[Jakob Kummerow, 2013/11/07 09:01:06]

nit: 2013

[danno, 2013/11/07 13:19:57]

Done.

+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <stdlib.h>
+
+#include "v8.h"
+
+#include "macro-assembler.h"
+#include "factory.h"
+#include "platform.h"
+#include "serialize.h"
+#include "cctest.h"
+
+using namespace v8::internal;
+
+typedef int (*F0)();
+
+#define __ masm->
+
+
+TEST(LoadAndStoreWithRepresentation) {
+  v8::internal::V8::Initialize(NULL);
+
+  // Allocate an executable page of memory.
+  size_t actual_size;
+  byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
+                                                 &actual_size,
+                                                 true));
+  CHECK(buffer);
+  Isolate* isolate = CcTest::i_isolate();
+  HandleScope handles(isolate);
+  MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size));
+  MacroAssembler* masm = &assembler;  // Create a pointer for the __ macro.
+  masm->set_allow_stub_calls(false);
+  __ sub(esp, Immediate(1 * kPointerSize));
+  Label exit;
+
+  // Test 1.
+  __ mov(eax, Immediate(1));  // Test number.
+  __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
+  __ mov(ecx, Immediate(-1));
+  __ Store(ecx, Operand(esp, 0 * kPointerSize), Representation::UInteger8());
+  __ mov(ecx, Operand(esp, 0 * kPointerSize));
+  __ mov(edx, Immediate(255));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+  __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::UInteger8());
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+
+  // Test 2.
+  __ mov(eax, Immediate(2));  // Test number.
+  __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
+  __ mov(ecx, Immediate(-1));
+  __ Store(ecx, Operand(esp, 0 * kPointerSize), Representation::Integer8());
+  __ mov(ecx, Operand(esp, 0 * kPointerSize));
+  __ mov(edx, Immediate(255));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+  __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::Integer8());
+  __ mov(ecx, Immediate(-1));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+
+  // Test 3.
+  __ mov(eax, Immediate(3));  // Test number.
+  __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
+  __ mov(ecx, Immediate(-1));
+  __ Store(ecx, Operand(esp, 0 * kPointerSize), Representation::Integer16());
+  __ mov(ecx, Operand(esp, 0 * kPointerSize));
+  __ mov(edx, Immediate(65535));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+  __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::Integer16());
+  __ mov(ecx, Immediate(-1));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+
+  // Test 4.
+  __ mov(eax, Immediate(4));  // Test number.
+  __ mov(Operand(esp, 0 * kPointerSize), Immediate(0));
+  __ mov(ecx, Immediate(-1));
+  __ Store(ecx, Operand(esp, 0 * kPointerSize), Representation::UInteger16());
+  __ mov(ecx, Operand(esp, 0 * kPointerSize));
+  __ mov(edx, Immediate(65535));
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+  __ Load(edx, Operand(esp, 0 * kPointerSize), Representation::UInteger16());
+  __ cmp(ecx, edx);
+  __ j(not_equal, &exit);
+
+  __ xor_(eax, eax);  // Success.
+  __ bind(&exit);
+  __ add(esp, Immediate(1 * kPointerSize));
+  __ ret(0);
+
+  CodeDesc desc;
+  masm->GetCode(&desc);
+  // Call the function from C++.
+  int result = FUNCTION_CAST<F0>(buffer)();
+  CHECK_EQ(0, result);
+}
+
+#undef __