| /* |
| * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef CPU_SPARC_VM_REGISTERMAP_SPARC_HPP |
| #define CPU_SPARC_VM_REGISTERMAP_SPARC_HPP |
| |
| // machine-dependent implemention for register maps |
| friend class frame; |
| friend class MethodHandles; |
| |
| private: |
| intptr_t* _window; // register window save area (for L and I regs) |
| intptr_t* _younger_window; // previous save area (for O regs, if needed) |
| |
| address pd_location(VMReg reg) const; |
| void pd_clear(); |
| void pd_initialize_from(const RegisterMap* map) { |
| _window = map->_window; |
| _younger_window = map->_younger_window; |
| _location_valid[0] = 0; // avoid the shift_individual_registers game |
| } |
| void pd_initialize() { |
| _window = NULL; |
| _younger_window = NULL; |
| _location_valid[0] = 0; // avoid the shift_individual_registers game |
| } |
| void shift_window(intptr_t* sp, intptr_t* younger_sp) { |
| _window = sp; |
| _younger_window = younger_sp; |
| // Throw away locations for %i, %o, and %l registers: |
| // But do not throw away %g register locs. |
| if (_location_valid[0] != 0) shift_individual_registers(); |
| } |
| void shift_individual_registers(); |
| // When popping out of compiled frames, we make all IRegs disappear. |
| void make_integer_regs_unsaved() { _location_valid[0] = 0; } |
| |
| #endif // CPU_SPARC_VM_REGISTERMAP_SPARC_HPP |