VM: Load common VM constants from Thread on ARM and MIPS.

runtime/vm/assembler_arm.cc

 // Copyright (c) 2013, 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"  // NOLINT
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 1549 matching lines @@
 
 void Assembler::LoadIsolate(Register rd) {
   ldr(rd, Address(THR, Thread::isolate_offset()));
 }
 
 
 void Assembler::LoadObjectHelper(Register rd,
                                  const Object& object,
                                  Condition cond,
                                  bool is_unique) {
+  // Load common VM constants from the thread. This works also in places where
+  // no constant pool is set up (e.g. intrinsic code).
+  if (Thread::CanLoadFromThread(object)) {
+    ldr(rd, Address(THR, Thread::OffsetFromThread(object)), cond);
+    return;
+  }
   // Smis and VM heap objects are never relocated; do not use object pool.
   if (object.IsSmi()) {
     LoadImmediate(rd, reinterpret_cast<int32_t>(object.raw()), cond);
   } else if (object.InVMHeap() || !allow_constant_pool()) {
     // Make sure that class CallPattern is able to decode this load immediate.
     const int32_t object_raw = reinterpret_cast<int32_t>(object.raw());
     LoadImmediate(rd, object_raw, cond);
   } else {
     // Make sure that class CallPattern is able to decode this load from the
     // object pool.
@@ skipping 221 matching lines @@
   }
   // A store buffer update is required.
   RegList regs = (1 << LR);
   if (value != R0) {
     regs |= (1 << R0);  // Preserve R0.
   }
   PushList(regs);
   if (object != R0) {
     mov(R0, Operand(object));
   }
-  StubCode* stub_code = Isolate::Current()->stub_code();
-  BranchLink(&stub_code->UpdateStoreBufferLabel());
+  ldr(LR, Address(THR, Thread::update_store_buffer_entry_point_offset()));
+  blx(LR);
   PopList(regs);
   Bind(&done);
 }
 
 
 void Assembler::StoreIntoObjectOffset(Register object,
                                       int32_t offset,
                                       Register value,
                                       bool can_value_be_smi) {
   int32_t ignored = 0;
@@ skipping 1780 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfFpuRegisters));
   return fpu_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM