Adds far-branches to arm64.

runtime/vm/stub_code_arm64.cc

 // Copyright (c) 2014, 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_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 730 matching lines @@
 //   LR : points to return address.
 //   R0 : entrypoint of the Dart function to call.
 //   R1 : arguments descriptor array.
 //   R2 : arguments array.
 //   R3 : new context containing the current isolate pointer.
 void StubCode::GenerateInvokeDartCodeStub(Assembler* assembler) {
   __ Comment("InvokeDartCodeStub");
   __ EnterFrame(0);
 
   // The new context, saved vm tag, the top exit frame, and the old context.
-  // const intptr_t kPreservedContextSlots = 4;
   const intptr_t kNewContextOffsetFromFp =
       -(1 + kAbiPreservedCpuRegCount + kAbiPreservedFpuRegCount) * kWordSize;
-  // const intptr_t kPreservedRegSpace =
-  //     kWordSize * (kAbiPreservedCpuRegCount + kPreservedContextSlots);
 
   // Save the callee-saved registers.
   for (int i = kAbiFirstPreservedCpuReg; i <= kAbiLastPreservedCpuReg; i++) {
     const Register r = static_cast<Register>(i);
     // We use str instead of the Push macro because we will be pushing the PP
     // register when it is not holding a pool-pointer since we are coming from
     // C++ code.
     __ str(r, Address(SP, -1 * kWordSize, Address::PreIndex));
   }
 
@@ skipping 103 matching lines @@
   __ Pop(R6);
   __ StoreToOffset(R4, CTX, Isolate::top_context_offset(), PP);
   __ StoreToOffset(R6, CTX, Isolate::top_exit_frame_info_offset(), PP);
 
   __ Pop(R3);
   __ Pop(R4);
 
   // Restore the bottom 64-bits of callee-saved V registers.
   for (int i = kAbiLastPreservedFpuReg; i >= kAbiFirstPreservedFpuReg; i--) {
     const VRegister r = static_cast<VRegister>(i);
-    __ PushDouble(r);
+    __ PopDouble(r);
   }
 
   // Restore C++ ABI callee-saved registers.
   for (int i = kAbiLastPreservedCpuReg; i >= kAbiFirstPreservedCpuReg; i--) {
     Register r = static_cast<Register>(i);
     // We use ldr instead of the Pop macro because we will be popping the PP
     // register when it is not holding a pool-pointer since we are returning to
     // C++ code.
     __ ldr(r, Address(SP, 1 * kWordSize, Address::PostIndex));
   }
@@ skipping 1026 matching lines @@
   const Register right = R0;
   __ LoadFromOffset(left, SP, 1 * kWordSize, kNoPP);
   __ LoadFromOffset(right, SP, 0 * kWordSize, kNoPP);
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp);
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64