Add a unit test for V8's 64-bit assembler.

Review URL: http://codereview.chromium.org/115707

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2051 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x64/assembler-x64.cc

@@ -32,11 +32,44 @@
 namespace v8 {
 namespace internal {
 
-Register no_reg = { -1 };
+// -----------------------------------------------------------------------------
+// Implementation of Register
+
 Register rax = { 0 };
 Register rcx = { 1 };
-Register rsi = { 7 };
+Register rdx = { 2 };
+Register rbx = { 3 };
+Register rsp = { 4 };
+Register rbp = { 5 };
+Register rsi = { 6 };
+Register rdi = { 7 };
+Register r8 = { 8 };
+Register r9 = { 9 };
+Register r10 = { 10 };
+Register r11 = { 11 };
+Register r12 = { 12 };
+Register r13 = { 13 };
+Register r14 = { 14 };
+Register r15 = { 15 };
 
+Register no_reg = { -1 };
+
+XMMRegister xmm0 = { 0 };
+XMMRegister xmm1 = { 1 };
+XMMRegister xmm2 = { 2 };
+XMMRegister xmm3 = { 3 };
+XMMRegister xmm4 = { 4 };
+XMMRegister xmm5 = { 5 };
+XMMRegister xmm6 = { 6 };
+XMMRegister xmm7 = { 7 };
+XMMRegister xmm8 = { 8 };
+XMMRegister xmm9 = { 9 };
+XMMRegister xmm10 = { 10 };
+XMMRegister xmm11 = { 11 };
+XMMRegister xmm12 = { 12 };
+XMMRegister xmm13 = { 13 };
+XMMRegister xmm14 = { 14 };
+XMMRegister xmm15 = { 15 };
 
 // Safe default is no features.
 uint64_t CpuFeatures::supported_ = 0;

src/x64/assembler-x64.h

@@ -99,7 +99,6 @@ extern Register r14;
 extern Register r15;
 extern Register no_reg;
 
-
 struct XMMRegister {
   bool is_valid() const  { return 0 <= code_ && code_ < 2; }
   int code() const  {
@@ -118,6 +117,14 @@ extern XMMRegister xmm4;
 extern XMMRegister xmm5;
 extern XMMRegister xmm6;
 extern XMMRegister xmm7;
+extern XMMRegister xmm8;
+extern XMMRegister xmm9;
+extern XMMRegister xmm10;
+extern XMMRegister xmm11;
+extern XMMRegister xmm12;
+extern XMMRegister xmm13;
+extern XMMRegister xmm14;
+extern XMMRegister xmm15;
 
 enum Condition {
   // any value < 0 is considered no_condition

test/cctest/SConscript

@@ -64,6 +64,7 @@ SOURCES = {
     'test-disasm-ia32.cc',
     'test-log-ia32.cc'
   ],
+  'arch:x64': ['test-assembler-x64.cc'],
   'os:linux':  ['test-platform-linux.cc'],
   'os:macos':  ['test-platform-macos.cc'],
   'os:nullos': ['test-platform-nullos.cc'],

test/cctest/test-assembler-x64.cc

@@ -0,0 +1,84 @@
+// Copyright 2009 the V8 project authors. All rights reserved.
+// 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 v8::internal::byte;
+using v8::internal::OS;
+using v8::internal::Assembler;
+using v8::internal::rax;
+using v8::internal::rsi;
+using v8::internal::FUNCTION_CAST;
+using v8::internal::CodeDesc;
+
+
+// Test the x64 assembler by compiling some simple functions into
+// a buffer and executing them.  These tests do not initialize the
+// V8 library, create a context, or use any V8 objects.
+// The AMD64 calling convention is used, with the first five arguments
+// in RSI, RDI, RDX, RCX, R8, and R9, and floating point arguments in
+// the XMM registers.  The return value is in RAX.
+// This calling convention is used on Linux, with GCC, and on Mac OS,
+// with GCC.  A different convention is used on 64-bit windows.
+
+typedef int (*F0)();
+typedef int (*F1)(int x);
+typedef int (*F2)(int x, int y);
+
+#define __ assm.
+
+
+TEST(AssemblerX640) {
+  // Allocate an executable page of memory.
+  size_t actual_size;
+  byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
+                                                 &actual_size,
+                                                 true));
+  CHECK(buffer);
+  Assembler assm(buffer, actual_size);
+
+  // Assemble a simple function that copies argument 2 and returns it.
+  __ mov(rax, rsi);
+  __ nop();
+  __ ret(0);
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  // Call the function from C++.
+  int result =  FUNCTION_CAST<F2>(buffer)(3, 2);
+  CHECK_EQ(2, result);
+}
+
+#undef __