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/stubRoutines_x86_32.hpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,57 @@
     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 +// This file holds the platform specific parts of the StubRoutines
    1.29 +// definition. See stubRoutines.hpp for a description on how to
    1.30 +// extend it.
    1.31 +
    1.32 +enum platform_dependent_constants {
    1.33 +  code_size1 =  9000,           // simply increase if too small (assembler will crash if too small)
    1.34 +  code_size2 = 22000            // simply increase if too small (assembler will crash if too small)
    1.35 +};
    1.36 +
    1.37 +class i486 {
    1.38 + friend class StubGenerator;
    1.39 + friend class VMStructs;
    1.40 +
    1.41 + private:
    1.42 +  // If we call compiled code directly from the call stub we will
    1.43 +  // need to adjust the return back to the call stub to a specialized
    1.44 +  // piece of code that can handle compiled results and cleaning the fpu
    1.45 +  // stack. The variable holds that location.
    1.46 +  static address _call_stub_compiled_return;
    1.47 +  static address _verify_mxcsr_entry;
    1.48 +  static address _verify_fpu_cntrl_wrd_entry;
    1.49 +  static jint    _mxcsr_std;
    1.50 +
    1.51 + public:
    1.52 +  static address verify_mxcsr_entry()                        { return _verify_mxcsr_entry; }
    1.53 +  static address verify_fpu_cntrl_wrd_entry()                { return _verify_fpu_cntrl_wrd_entry; }
    1.54 +
    1.55 +  static address get_call_stub_compiled_return()             { return _call_stub_compiled_return; }
    1.56 +  static void set_call_stub_compiled_return(address ret)     { _call_stub_compiled_return = ret; }
    1.57 +};
    1.58 +
    1.59 +  static bool    returns_to_call_stub(address return_pc)     { return (return_pc == _call_stub_return_address) ||
    1.60 +                                                                       return_pc == i486::get_call_stub_compiled_return(); }