jdk8-mips64-public/hotspot: src/cpu/mips/vm/interpreter

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

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    26 #ifndef CPU_MIPS_VM_INTERPRETER_MIPS_HPP

    27 #define CPU_MIPS_VM_INTERPRETER_MIPS_HPP

    29  public:

    31   // Sentinel placed in the code for interpreter returns so

    32   // that i2c adapters and osr code can recognize an interpreter

    33   // return address and convert the return to a specialized

    34   // block of code to handle compiedl return values and cleaning

    35   // the fpu stack.

    36   static const int return_sentinel;

    38   static Address::ScaleFactor stackElementScale() {

    39 //    return TaggedStackInterpreter? Address::times_8 : Address::times_4;

    40     return NOT_LP64(Address::times_4)LP64_ONLY(Address::times_8);

    41   }

    43   // Offset from rsp (which points to the last stack element)

    44   static int expr_offset_in_bytes(int i) { return stackElementSize*i ; }

    45 	// Size of interpreter code.  Increase if too small.  Interpreter will

    46   // fail with a guarantee ("not enough space for interpreter generation");

    47   // if too small.

    48   // Run with +PrintInterpreterSize to get the VM to print out the size.

    49   // Max size with JVMTI and TaggedStackInterpreter

    50   const static int InterpreterCodeSize = 168 * 1024;

    51 #if 0

    52   // Support for Tagged Stacks

    54   // Stack index relative to tos (which points at value)

    55   static int expr_index_at(int i)     {

    56     return stackElementWords() * i;

    57   }

    59   static int expr_tag_index_at(int i) {

    60     assert(TaggedStackInterpreter, "should not call this");

    61     // tag is one word above java stack element

    62     return stackElementWords() * i + 1;

    63   }

    65   // Already negated by c++ interpreter

    66   static int local_index_at(int i)     {

    67     assert(i<=0, "local direction already negated");

    68     return stackElementWords() * i + (value_offset_in_bytes()/wordSize);

    69   }

    71   static int local_tag_index_at(int i) {

    72     assert(i<=0, "local direction already negated");

    73     assert(TaggedStackInterpreter, "should not call this");

    74     return stackElementWords() * i + (tag_offset_in_bytes()/wordSize);

    75   }

    76 #endif

    77 #endif // CPU_MIPS_VM_INTERPRETER_MIPS_HPP

src/cpu/mips/vm/interpreter_mips.hpp@d885f8d65c58