Mercurial > hg > graal-jvmci-8
view src/cpu/sparc/vm/registerMap_sparc.hpp @ 10102:f2e682ef3156
8012335: G1: Fix bug with compressed oops in template interpreter on x86 and sparc.
Summary: In do_oop_store the uncompressed value of the oop being stored needs to be preserved and passed to g1_write_barrier_post. This is necessary for the heap region cross check to work correctly.
Reviewed-by: coleenp, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
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date | Wed, 17 Apr 2013 10:57:02 -0700 |
parents | cba7b5c2d53f |
children |
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/* * 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