| /* |
| * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012, 2013 SAP SE. 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_PPC_VM_ICACHE_PPC_HPP |
| #define CPU_PPC_VM_ICACHE_PPC_HPP |
| |
| // Interface for updating the instruction cache. Whenever the VM modifies |
| // code, part of the processor instruction cache potentially has to be flushed. |
| |
| class ICache : public AbstractICache { |
| friend class ICacheStubGenerator; |
| static int ppc64_flush_icache(address start, int lines, int magic); |
| |
| public: |
| enum { |
| // Actually, cache line size is 64, but keeping it as it is to be |
| // on the safe side on ALL PPC64 implementations. |
| log2_line_size = 5, |
| line_size = 1 << log2_line_size |
| }; |
| |
| static void ppc64_flush_icache_bytes(address start, int bytes) { |
| // Align start address to an icache line boundary and transform |
| // nbytes to an icache line count. |
| const uint line_offset = mask_address_bits(start, line_size - 1); |
| ppc64_flush_icache(start - line_offset, (bytes + line_offset + line_size - 1) >> log2_line_size, 0); |
| } |
| }; |
| |
| #endif // CPU_PPC_VM_ICACHE_PPC_HPP |