1 /* 2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_X86_DISASSEMBLER_X86_HPP 26 #define CPU_X86_DISASSEMBLER_X86_HPP 27 pd_instruction_alignment()28 static int pd_instruction_alignment() { 29 return 1; 30 } 31 pd_cpu_opts()32 static const char* pd_cpu_opts() { 33 return ""; 34 } 35 36 // Returns address of n-th instruction preceding addr, 37 // NULL if no preceding instruction can be found. 38 // On CISC architectures, it is difficult to impossible to step 39 // backwards in the instruction stream. Therefore just return NULL. 40 // It might be beneficial to check "is_readable" as we do on ppc and s390. find_prev_instr(address addr,int n_instr)41 static address find_prev_instr(address addr, int n_instr) { 42 return NULL; 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)" decode_instruction0(address here,outputStream * st,address virtual_begin=NULL)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) annotate(address pc,outputStream * st)55 static void annotate(address pc, outputStream* st) { }; 56 57 #endif // CPU_X86_DISASSEMBLER_X86_HPP 58