- On store buffer block overflow call a VM leaf function to

vm/assembler_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/heap.h"
 #include "vm/memory_region.h"
@@ skipping 1527 matching lines @@
 void Assembler::ReserveAlignedFrameSpace(intptr_t frame_space) {
   // Reserve space for arguments and align frame before entering
   // the C++ world.
   AddImmediate(RSP, Immediate(-frame_space));
   if (OS::ActivationFrameAlignment() > 0) {
     andq(RSP, Immediate(~(OS::ActivationFrameAlignment() - 1)));
   }
 }
 
 
+void Assembler::PreserveCallerSavedRegisters() {
+  // Based on http://x86-64.org/documentation/abi.pdf Fig. 3.4
+  pushq(RAX);
+  pushq(RCX);
+  pushq(RDX);
+  pushq(RSI);
+  pushq(RDI);
+  pushq(R8);
+  pushq(R9);
+  pushq(R10);
+  pushq(R11);
+  // TODO(srdjan): Add XMM registers once they are used by the compiler.
+}
+
+
+void Assembler::RestoreCallerSavedRegisters() {
+  // Based on http://x86-64.org/documentation/abi.pdf Fig. 3.4
+  // TODO(srdjan): Add XMM registers once they are used by the compiler.
+  popq(R11);
+  popq(R10);
+  popq(R9);
+  popq(R8);
+  popq(RDI);
+  popq(RSI);
+  popq(RDX);
+  popq(RCX);
+  popq(RAX);
+}
+
+
 void Assembler::CallRuntime(const RuntimeEntry& entry) {
   entry.Call(this);
 }
 
 
 void Assembler::Align(int alignment, int offset) {
   ASSERT(Utils::IsPowerOfTwo(alignment));
   int pos = offset + buffer_.GetPosition();
   int mod = pos & (alignment - 1);
   if (mod == 0) {
@@ skipping 182 matching lines @@
     comments.SetCommentAt(i, comments_[i]->comment());
   }
 
   return comments;
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64