src/hotspot/cpu/arm/c1_MacroAssembler_arm.hpp
author erikj
Tue, 12 Sep 2017 19:03:39 +0200
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parent 42664 hotspot/src/cpu/arm/vm/c1_MacroAssembler_arm.hpp@29142a56c193
child 53244 9807daeb47c4
permissions -rw-r--r--
8187443: Forest Consolidation: Move files to unified layout Reviewed-by: darcy, ihse
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/*
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 * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP
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#define CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP
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 private:
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  void pd_init() { /* not used */ }
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 public:
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  // Puts address of allocated object into register `obj` and end of allocated object into register `obj_end`.
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  // `size_expression` should be a register or constant which can be used as immediate in "add" instruction.
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  void try_allocate(Register obj, Register obj_end, Register tmp1, Register tmp2,
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                    RegisterOrConstant size_expression, Label& slow_case);
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  void initialize_header(Register obj, Register klass, Register len, Register tmp);
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  // Cleans object body [base..obj_end]. Clobbers `base` and `tmp` registers.
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  void initialize_body(Register base, Register obj_end, Register tmp);
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  void initialize_object(Register obj, Register obj_end, Register klass,
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                         Register len, Register tmp1, Register tmp2,
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                         RegisterOrConstant header_size_expression, int obj_size_in_bytes,
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                         bool is_tlab_allocated);
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  void allocate_object(Register obj, Register tmp1, Register tmp2, Register tmp3,
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                       int header_size, int object_size,
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                       Register klass, Label& slow_case);
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  void allocate_array(Register obj, Register len,
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                      Register tmp1, Register tmp2, Register tmp3,
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                      int header_size, int element_size,
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                      Register klass, Label& slow_case);
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  enum {
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    max_array_allocation_length = 0x01000000
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  };
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  int lock_object(Register hdr, Register obj, Register disp_hdr, Register tmp, Label& slow_case);
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  void unlock_object(Register hdr, Register obj, Register disp_hdr, Register tmp, Label& slow_case);
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  // This platform only uses signal-based null checks. The Label is not needed.
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  void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); }
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#endif // CPU_ARM_VM_C1_MACROASSEMBLER_ARM_HPP