1 /*
   2  * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP
  26 #define CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP
  27 
  28  private:
  29 
  30   void pd_init() { /* not used */ }
  31 
  32  public:
  33 
  34   // Puts address of allocated object into register `obj` and end of allocated object into register `obj_end`.
  35   // `size_expression` should be a register or constant which can be used as immediate in "add" instruction.
  36   void try_allocate(Register obj, Register obj_end, Register tmp1, Register tmp2,
  37                     RegisterOrConstant size_expression, Label& slow_case);
  38 
  39   void initialize_header(Register obj, Register klass, Register len, Register tmp);
  40 
  41   // Cleans object body [base..obj_end]. Clobbers `base` and `tmp` registers.
  42   void initialize_body(Register base, Register obj_end, Register tmp);
  43 
  44   void initialize_object(Register obj, Register obj_end, Register klass,
  45                          Register len, Register tmp1, Register tmp2,
  46                          RegisterOrConstant header_size_expression, int obj_size_in_bytes,
  47                          bool is_tlab_allocated);
  48 
  49   void allocate_object(Register obj, Register tmp1, Register tmp2, Register tmp3,
  50                        int header_size, int object_size,
  51                        Register klass, Label& slow_case);
  52 
  53   void allocate_array(Register obj, Register len,
  54                       Register tmp1, Register tmp2, Register tmp3,
  55                       int header_size, int element_size,
  56                       Register klass, Label& slow_case);
  57 
  58   enum {
  59     max_array_allocation_length = 0x01000000
  60   };
  61 
  62   int lock_object(Register hdr, Register obj, Register disp_hdr, Register tmp, Label& slow_case);
  63 
  64   void unlock_object(Register hdr, Register obj, Register disp_hdr, Register tmp, Label& slow_case);
  65 
  66   // This platform only uses signal-based null checks. The Label is not needed.
  67   void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); }
  68 
  69 #endif // CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP