1 /* 2 * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2007, 2010 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_ZERO_DISASSEMBLER_ZERO_HPP 27 #define CPU_ZERO_DISASSEMBLER_ZERO_HPP 28 29 static int pd_instruction_alignment() { 30 return 1; 31 } 32 33 static const char* pd_cpu_opts() { 34 return ""; 35 } 36 37 // Returns address of n-th instruction preceding addr, 38 // NULL if no preceding instruction can be found. 39 // On ZERO, we assume a constant instruction length of 1 byte. 40 // It might be beneficial to check "is_readable" as we do on ppc and s390. 41 static address find_prev_instr(address addr, int n_instr) { 42 return addr - 1*n_instr; 43 } 44 45 // special-case instruction decoding. 46 // There may be cases where the binutils disassembler doesn't do 47 // the perfect job. In those cases, decode_instruction0 may kick in 48 // and do it right. 49 // If nothing had to be done, just return "here", otherwise return "here + instr_len(here)" 50 static address decode_instruction0(address here, outputStream* st, address virtual_begin = NULL) { 51 return here; 52 } 53 54 // platform-specific instruction annotations (like value of loaded constants) 55 static void annotate(address pc, outputStream* st) { }; 56 57 #endif // CPU_ZERO_DISASSEMBLER_ZERO_HPP