[Isolates] Merge crankshaft (r5922 from bleeding_edge).

src/arm/macro-assembler-arm.h

-// Copyright 2006-2009 the V8 project authors. All rights reserved.
+// Copyright 2010 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.
@@ skipping 205 matching lines @@
       } else {
         stm(db_w, sp, src1.bit() | src2.bit(), cond);
         Push(src3, src4, cond);
       }
     } else {
       str(src1, MemOperand(sp, 4, NegPreIndex), cond);
       Push(src2, src3, src4, cond);
     }
   }
 
+  // Push and pop the registers that can hold pointers, as defined by the
+  // RegList constant kSafepointSavedRegisters.
+  void PushSafepointRegisters();
+  void PopSafepointRegisters();
+  static int SafepointRegisterStackIndex(int reg_code);
+
   // Load two consecutive registers with two consecutive memory locations.
   void Ldrd(Register dst1,
             Register dst2,
             const MemOperand& src,
             Condition cond = al);
 
   // Store two consecutive registers to two consecutive memory locations.
   void Strd(Register src1,
             Register src2,
             const MemOperand& dst,
             Condition cond = al);
 
   // ---------------------------------------------------------------------------
-  // Stack limit support
-
-  void StackLimitCheck(Label* on_stack_limit_hit);
-
-  // ---------------------------------------------------------------------------
   // Activation frames
 
   void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); }
   void LeaveInternalFrame() { LeaveFrame(StackFrame::INTERNAL); }
 
   void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); }
   void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); }
 
   // Enter exit frame.
   // Expects the number of arguments in register r0 and
   // the builtin function to call in register r1. Exits with argc in
   // r4, argv in r6, and and the builtin function to call in r5.
-  void EnterExitFrame();
+  void EnterExitFrame(bool save_doubles);
 
   // Leave the current exit frame. Expects the return value in r0.
-  void LeaveExitFrame();
+  void LeaveExitFrame(bool save_doubles);
 
   // Get the actual activation frame alignment for target environment.
   static int ActivationFrameAlignment();
 
   void LoadContext(Register dst, int context_chain_length);
 
   void LoadGlobalFunction(int index, Register function);
 
   // Load the initial map from the global function. The registers
   // function and map can be the same, function is then overwritten.
@@ skipping 297 matching lines @@
   // Runtime calls
 
   // Call a code stub.
   void CallStub(CodeStub* stub, Condition cond = al);
 
   // Call a code stub.
   void TailCallStub(CodeStub* stub, Condition cond = al);
 
   // Call a runtime routine.
   void CallRuntime(const Runtime::Function* f, int num_arguments);
+  void CallRuntimeSaveDoubles(Runtime::FunctionId id);
 
   // Convenience function: Same as above, but takes the fid instead.
   void CallRuntime(Runtime::FunctionId fid, int num_arguments);
 
   // Convenience function: call an external reference.
   void CallExternalReference(const ExternalReference& ext,
                              int num_arguments);
 
   // Tail call of a runtime routine (jump).
   // Like JumpToExternalReference, but also takes care of passing the number
@@ skipping 70 matching lines @@
 
   // Verify restrictions about code generated in stubs.
   void set_generating_stub(bool value) { generating_stub_ = value; }
   bool generating_stub() { return generating_stub_; }
   void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; }
   bool allow_stub_calls() { return allow_stub_calls_; }
 
   // ---------------------------------------------------------------------------
   // Smi utilities
 
+  void SmiTag(Register reg, SBit s = LeaveCC) {
+    add(reg, reg, Operand(reg), s);
+  }
+
+  void SmiUntag(Register reg) {
+    mov(reg, Operand(reg, ASR, kSmiTagSize));
+  }
+
   // Jump if either of the registers contain a non-smi.
   void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi);
   // Jump if either of the registers contain a smi.
   void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi);
 
   // Abort execution if argument is a smi. Used in debug code.
   void AbortIfSmi(Register object);
 
   // ---------------------------------------------------------------------------
   // String utilities
@@ skipping 86 matching lines @@
 
  private:
   byte* address_;  // The address of the code being patched.
   int instructions_;  // Number of instructions of the expected patch size.
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
 };
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
+// Helper class for generating code or data associated with the code
+// right after a call instruction. As an example this can be used to
+// generate safepoint data after calls for crankshaft.
+class PostCallGenerator {
+ public:
+  PostCallGenerator() { }
+  virtual ~PostCallGenerator() { }
+  virtual void Generate() = 0;
+};
+
+
 // -----------------------------------------------------------------------------
 // Static helper functions.
 
 static MemOperand ContextOperand(Register context, int index) {
   return MemOperand(context, Context::SlotOffset(index));
 }
 
 
 static inline MemOperand GlobalObjectOperand()  {
   return ContextOperand(cp, Context::GLOBAL_INDEX);
 }
 
 
 #ifdef GENERATED_CODE_COVERAGE
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_