Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/cpu/x86/vm/interpreter_x86.hpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,69 @@
     1.4 +/*
     1.5 + * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
    1.24 + * have any questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 + public:
    1.29 +
    1.30 +  // Sentinel placed in the code for interpreter returns so
    1.31 +  // that i2c adapters and osr code can recognize an interpreter
    1.32 +  // return address and convert the return to a specialized
    1.33 +  // block of code to handle compiedl return values and cleaning
    1.34 +  // the fpu stack.
    1.35 +  static const int return_sentinel;
    1.36 +
    1.37 +
    1.38 +  static Address::ScaleFactor stackElementScale() {
    1.39 +    return TaggedStackInterpreter? Address::times_8 : Address::times_4;
    1.40 +  }
    1.41 +
    1.42 +  // Offset from rsp (which points to the last stack element)
    1.43 +  static int expr_offset_in_bytes(int i) { return stackElementSize()*i ; }
    1.44 +  static int expr_tag_offset_in_bytes(int i) {
    1.45 +    assert(TaggedStackInterpreter, "should not call this");
    1.46 +    return expr_offset_in_bytes(i) + wordSize;
    1.47 +  }
    1.48 +
    1.49 +  // Support for Tagged Stacks
    1.50 +
    1.51 +  // Stack index relative to tos (which points at value)
    1.52 +  static int expr_index_at(int i)     {
    1.53 +    return stackElementWords() * i;
    1.54 +  }
    1.55 +
    1.56 +  static int expr_tag_index_at(int i) {
    1.57 +    assert(TaggedStackInterpreter, "should not call this");
    1.58 +    // tag is one word above java stack element
    1.59 +    return stackElementWords() * i + 1;
    1.60 +  }
    1.61 +
    1.62 +  // Already negated by c++ interpreter
    1.63 +  static int local_index_at(int i)     {
    1.64 +    assert(i<=0, "local direction already negated");
    1.65 +    return stackElementWords() * i + (value_offset_in_bytes()/wordSize);
    1.66 +  }
    1.67 +
    1.68 +  static int local_tag_index_at(int i) {
    1.69 +    assert(i<=0, "local direction already negated");
    1.70 +    assert(TaggedStackInterpreter, "should not call this");
    1.71 +    return stackElementWords() * i + (tag_offset_in_bytes()/wordSize);
    1.72 +  }