/*

 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2016, 2019 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

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 */

#ifndef CPU_S390_DISASSEMBLER_S390_HPP

#define CPU_S390_DISASSEMBLER_S390_HPP

  static int pd_instruction_alignment() {

    return 2;

  }

  static const char* pd_cpu_opts() {

    return "s390";

  }

  static bool valid_opcodes[256];

  static bool is_valid_opcode_at(address here);

  // Find preceding instruction.

  //

  // Starting at the passed location, the n-th preceding (towards lower addresses)

  // location is searched, the contents of which - if interpreted as

  // instructions - has the passed location as n-th successor.

  //  - If multiple such locations exist between (here-n*instr_maxlen()) and here,

  //    the most distant location is selected.

  //  - If no such location exists, NULL is returned. The caller should then

  //    terminate its search and react properly.

  static address find_prev_instr(address here, int n_instr);

  static int     count_instr(address begin, address end);

  // special-case instruction decoding.

  // There may be cases where the binutils disassembler doesn't do

  // the perfect job. In those cases, decode_instruction0 may kick in

  // and do it right.

  // If nothing had to be done, just return "here", otherwise return "here + instr_len(here)"

  static address decode_instruction0(address here, outputStream* st, address virtual_begin = NULL);

  // platform-specific instruction annotations (like value of loaded constants)

  static void annotate(address pc, outputStream* st);

#endif // CPU_S390_DISASSEMBLER_S390_HPP