// Copyright 2012 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. #ifndef V8_ARM_MACRO_ASSEMBLER_ARM_H_ #define V8_ARM_MACRO_ASSEMBLER_ARM_H_ #include "assembler.h" #include "frames.h" #include "v8globals.h" namespace v8 { namespace internal { // ---------------------------------------------------------------------------- // Static helper functions // Generate a MemOperand for loading a field from an object. inline MemOperand FieldMemOperand(Register object, int offset) { return MemOperand(object, offset - kHeapObjectTag); } // Give alias names to registers const Register cp = { 8 }; // JavaScript context pointer const Register kRootRegister = { 10 }; // Roots array pointer. // Flags used for AllocateHeapNumber enum TaggingMode { // Tag the result. TAG_RESULT, // Don't tag DONT_TAG_RESULT }; enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; enum LinkRegisterStatus { kLRHasNotBeenSaved, kLRHasBeenSaved }; Register GetRegisterThatIsNotOneOf(Register reg1, Register reg2 = no_reg, Register reg3 = no_reg, Register reg4 = no_reg, Register reg5 = no_reg, Register reg6 = no_reg); #ifdef DEBUG bool AreAliased(Register reg1, Register reg2, Register reg3 = no_reg, Register reg4 = no_reg, Register reg5 = no_reg, Register reg6 = no_reg); #endif enum TargetAddressStorageMode { CAN_INLINE_TARGET_ADDRESS, NEVER_INLINE_TARGET_ADDRESS }; // MacroAssembler implements a collection of frequently used macros. class MacroAssembler: public Assembler { public: // The isolate parameter can be NULL if the macro assembler should // not use isolate-dependent functionality. In this case, it's the // responsibility of the caller to never invoke such function on the // macro assembler. MacroAssembler(Isolate* isolate, void* buffer, int size); // Jump, Call, and Ret pseudo instructions implementing inter-working. void Jump(Register target, Condition cond = al); void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al); void Jump(Handle

 code, RelocInfo::Mode rmode, Condition cond = al);
  static int CallSize(Register target, Condition cond = al);
  void Call(Register target, Condition cond = al);
  int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al);
  static int CallSizeNotPredictableCodeSize(Address target,
                                            RelocInfo::Mode rmode,
                                            Condition cond = al);
  void Call(Address target, RelocInfo::Mode rmode,
            Condition cond = al,
            TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS);
  int CallSize(Handle code,
               RelocInfo::Mode rmode = RelocInfo::CODE_TARGET,
               TypeFeedbackId ast_id = TypeFeedbackId::None(),
               Condition cond = al);
  void Call(Handle code,
            RelocInfo::Mode rmode = RelocInfo::CODE_TARGET,
            TypeFeedbackId ast_id = TypeFeedbackId::None(),
            Condition cond = al,
            TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS);
  void Ret(Condition cond = al);

  // Emit code to discard a non-negative number of pointer-sized elements
  // from the stack, clobbering only the sp register.
  void Drop(int count, Condition cond = al);

  void Ret(int drop, Condition cond = al);

  // Swap two registers.  If the scratch register is omitted then a slightly
  // less efficient form using xor instead of mov is emitted.
  void Swap(Register reg1,
            Register reg2,
            Register scratch = no_reg,
            Condition cond = al);


  void And(Register dst, Register src1, const Operand& src2,
           Condition cond = al);
  void Ubfx(Register dst, Register src, int lsb, int width,
            Condition cond = al);
  void Sbfx(Register dst, Register src, int lsb, int width,
            Condition cond = al);
  // The scratch register is not used for ARMv7.
  // scratch can be the same register as src (in which case it is trashed), but
  // not the same as dst.
  void Bfi(Register dst,
           Register src,
           Register scratch,
           int lsb,
           int width,
           Condition cond = al);
  void Bfc(Register dst, Register src, int lsb, int width, Condition cond = al);
  void Usat(Register dst, int satpos, const Operand& src,
            Condition cond = al);

  void Call(Label* target);
  void Push(Register src) { push(src); }
  void Pop(Register dst) { pop(dst); }

  // Register move. May do nothing if the registers are identical.
  void Move(Register dst, Handle