| /* |
| * Copyright (c) 1997, 2012, 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. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/assembler.hpp" |
| #include "asm/assembler.inline.hpp" |
| |
| #include "assembler_sparc.hpp" |
| |
| int AbstractAssembler::code_fill_byte() { |
| return 0x00; // illegal instruction 0x00000000 |
| } |
| |
| #ifdef VALIDATE_PIPELINE |
| /* Walk over the current code section and verify that there are no obvious |
| * pipeline hazards exposed in the code generated. |
| */ |
| void Assembler::validate_no_pipeline_hazards() { |
| const CodeSection* csect = code_section(); |
| |
| address addr0 = csect->start(); |
| address addrN = csect->end(); |
| uint32_t prev = 0; |
| |
| assert((addrN - addr0) % BytesPerInstWord == 0, "must be"); |
| |
| for (address pc = addr0; pc != addrN; pc += BytesPerInstWord) { |
| uint32_t insn = *reinterpret_cast<uint32_t*>(pc); |
| |
| // 1. General case: No CTI immediately after other CTI |
| assert(!(is_cti(prev) && is_cti(insn)), "CTI-CTI not allowed."); |
| |
| // 2. Special case: No CTI immediately after/before RDPC |
| assert(!(is_cti(prev) && is_rdpc(insn)), "CTI-RDPC not allowed."); |
| assert(!(is_rdpc(prev) && is_cti(insn)), "RDPC-CTI not allowed."); |
| |
| prev = insn; |
| } |
| } |
| #endif |