VM: More abstract interface for generating stub calls.

runtime/vm/assembler_mips.h

 // 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.
 
 #ifndef VM_ASSEMBLER_MIPS_H_
 #define VM_ASSEMBLER_MIPS_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_mips.h directly; use assembler.h instead.
 #endif
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/constants_mips.h"
 #include "vm/hash_map.h"
 #include "vm/object.h"
 #include "vm/simulator.h"
 
 // References to documentation in this file refer to:
 // "MIPS® Architecture For Programmers Volume I-A:
 //   Introduction to the MIPS32® Architecture" in short "VolI-A"
 // and
 // "MIPS® Architecture For Programmers Volume II-A:
 //   The MIPS32® Instruction Set" in short "VolII-A"
 namespace dart {
 
 // Forward declarations.
 class RuntimeEntry;
+class StubEntry;
 
 class Immediate : public ValueObject {
  public:
   explicit Immediate(int32_t value) : value_(value) { }
 
   Immediate(const Immediate& other) : ValueObject(), value_(other.value_) { }
   Immediate& operator=(const Immediate& other) {
     value_ = other.value_;
     return *this;
   }
@@ skipping 871 matching lines @@
     LoadImmediate(rd, imm);
     SubuDetectOverflow(rd, rs, rd, ro);
   }
 
   void Branch(const ExternalLabel* label) {
     ASSERT(!in_delay_slot_);
     LoadImmediate(TMP, label->address());
     jr(TMP);
   }
 
+  void Branch(const StubEntry& stub_entry);
+
   void BranchPatchable(const ExternalLabel* label) {
     ASSERT(!in_delay_slot_);
     const uint16_t low = Utils::Low16Bits(label->address());
     const uint16_t high = Utils::High16Bits(label->address());
     lui(T9, Immediate(high));
     ori(T9, T9, Immediate(low));
     jr(T9);
     delay_slot_available_ = false;  // CodePatcher expects a nop.
   }
 
+  void BranchPatchable(const StubEntry& stub_entry);
+
   void BranchLink(const ExternalLabel* label) {
     ASSERT(!in_delay_slot_);
     LoadImmediate(T9, label->address());
     jalr(T9);
   }
 
+  void BranchLink(const StubEntry& stub_entry);
+
   void BranchLink(const ExternalLabel* label, Patchability patchable) {
     ASSERT(!in_delay_slot_);
     const int32_t offset = ObjectPool::element_offset(
         object_pool_wrapper_.FindExternalLabel(label, patchable));
     LoadWordFromPoolOffset(T9, offset - kHeapObjectTag);
     jalr(T9);
     if (patchable == kPatchable) {
       delay_slot_available_ = false;  // CodePatcher expects a nop.
     }
   }
 
+  void BranchLink(const StubEntry& stub_entry, Patchability patchable);
+
   void BranchLinkPatchable(const ExternalLabel* label) {
     BranchLink(label, kPatchable);
   }
 
+  void BranchLinkPatchable(const StubEntry& stub_entry);
+
   void Drop(intptr_t stack_elements) {
     ASSERT(stack_elements >= 0);
     if (stack_elements > 0) {
       addiu(SP, SP, Immediate(stack_elements * kWordSize));
     }
   }
 
   void LoadPoolPointer() {
     ASSERT(!in_delay_slot_);
     GetNextPC(TMP);  // TMP gets the address of the next instruction.
@@ skipping 799 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_MIPS_H_