Initial (stub) port of jump targets to the ARM platform....

src/virtual-frame-ia32.cc

Index: src/virtual-frame-ia32.cc
===================================================================
--- src/virtual-frame-ia32.cc	(revision 0)
+++ src/virtual-frame-ia32.cc	(revision 0)
@@ -0,0 +1,120 @@
+// Copyright 2008 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 "v8.h"
+
+#include "codegen.h"
+#include "codegen-inl.h"
+#include "virtual-frame.h"
+
+namespace v8 { namespace internal {
+
+// -------------------------------------------------------------------------
+// VirtualFrame implementation.
+
+#define __ masm_->
+
+VirtualFrame::VirtualFrame(CodeGenerator* cgen) {
+  ASSERT(cgen->scope() != NULL);
+
+  masm_ = cgen->masm();
+  frame_local_count_ = cgen->scope()->num_stack_slots();
+  parameter_count_ = cgen->scope()->num_parameters();

[Erik Corry, 2008/11/07 11:55:10]

I think you should be using the initalizer list syntax here.

+  height_ = 0;
+}
+
+
+VirtualFrame::VirtualFrame(VirtualFrame* original) {
+  ASSERT(original != NULL);
+
+  masm_ = original->masm_;
+  frame_local_count_ = original->frame_local_count_;
+  parameter_count_ = original->parameter_count_;
+  height_ = original->height_;
+}
+
+
+void VirtualFrame::Forget(int count) {
+  ASSERT(count >= 0);
+  ASSERT(height_ >= count);
+  height_ -= count;
+}
+
+
+void VirtualFrame::MergeTo(VirtualFrame* expected) {
+  ASSERT(masm_ == expected->masm_);
+  ASSERT(frame_local_count_ == expected->frame_local_count_);
+  ASSERT(parameter_count_ == expected->parameter_count_);
+  ASSERT(height_ == expected->height_);
+}
+
+
+void VirtualFrame::Enter() {
+  Comment cmnt(masm_, "[ Enter JS frame");
+  __ push(ebp);
+  __ mov(ebp, Operand(esp));
+
+  // Store the context and the function in the frame.
+  __ push(esi);
+  __ push(edi);
+
+  // Clear the function slot when generating debug code.
+  if (FLAG_debug_code) {
+    __ Set(edi, Immediate(reinterpret_cast<int>(kZapValue)));
+  }
+}
+
+
+void VirtualFrame::Exit() {
+  Comment cmnt(masm_, "[ Exit JS frame");
+  // Record the location of the JS exit code for patching when setting
+  // break point.
+  __ RecordJSReturn();
+
+  // Avoid using the leave instruction here, because it is too
+  // short. We need the return sequence to be a least the size of a
+  // call instruction to support patching the exit code in the
+  // debugger. See VisitReturnStatement for the full return sequence.
+  __ mov(esp, Operand(ebp));
+  __ pop(ebp);
+}
+
+
+void VirtualFrame::AllocateLocals() {
+  if (frame_local_count_ > 0) {
+    Comment cmnt(masm_, "[ Allocate space for locals");
+    __ Set(eax, Immediate(Factory::undefined_value()));
+    for (int i = 0; i < frame_local_count_; i++) {
+      __ push(eax);
+    }
+  }
+}
+
+
+#undef __
+
+} }  // namespace v8::internal