src/cpu/sparc/vm/registerMap_sparc.hpp

changeset 0
f90c822e73f8
child 6876
710a3c8b516e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/cpu/sparc/vm/registerMap_sparc.hpp	Wed Apr 27 01:25:04 2016 +0800
     1.3 @@ -0,0 +1,59 @@
     1.4 +/*
     1.5 + * Copyright (c) 1998, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +#ifndef CPU_SPARC_VM_REGISTERMAP_SPARC_HPP
    1.29 +#define CPU_SPARC_VM_REGISTERMAP_SPARC_HPP
    1.30 +
    1.31 +// machine-dependent implemention for register maps
    1.32 +  friend class frame;
    1.33 +  friend class MethodHandles;
    1.34 +
    1.35 + private:
    1.36 +  intptr_t* _window;         // register window save area (for L and I regs)
    1.37 +  intptr_t* _younger_window; // previous save area (for O regs, if needed)
    1.38 +
    1.39 +  address pd_location(VMReg reg) const;
    1.40 +  void pd_clear();
    1.41 +  void pd_initialize_from(const RegisterMap* map) {
    1.42 +    _window         = map->_window;
    1.43 +    _younger_window = map->_younger_window;
    1.44 +    _location_valid[0] = 0;  // avoid the shift_individual_registers game
    1.45 +  }
    1.46 +  void pd_initialize() {
    1.47 +    _window = NULL;
    1.48 +    _younger_window = NULL;
    1.49 +    _location_valid[0] = 0;  // avoid the shift_individual_registers game
    1.50 +  }
    1.51 +  void shift_window(intptr_t* sp, intptr_t* younger_sp) {
    1.52 +    _window         = sp;
    1.53 +    _younger_window = younger_sp;
    1.54 +    // Throw away locations for %i, %o, and %l registers:
    1.55 +    // But do not throw away %g register locs.
    1.56 +    if (_location_valid[0] != 0)  shift_individual_registers();
    1.57 +  }
    1.58 +  void shift_individual_registers();
    1.59 +  // When popping out of compiled frames, we make all IRegs disappear.
    1.60 +  void make_integer_regs_unsaved() { _location_valid[0] = 0; }
    1.61 +
    1.62 +#endif // CPU_SPARC_VM_REGISTERMAP_SPARC_HPP

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