/*

 * Copyright (c) 1998, 2019, 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 "code/vmreg.hpp"

// First VMReg value that could refer to a stack slot

VMReg VMRegImpl::stack0 = (VMReg)(intptr_t)((ConcreteRegisterImpl::number_of_registers + 7) & ~7);

// VMRegs are 4 bytes wide on all platforms

const int VMRegImpl::stack_slot_size = 4;

const int VMRegImpl::slots_per_word = wordSize / stack_slot_size;

const int VMRegImpl::register_count = ConcreteRegisterImpl::number_of_registers;

// Register names

const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers];

void VMRegImpl::print_on(outputStream* st) const {

  if( is_reg() ) {

    assert(VMRegImpl::regName[value()], "VMRegImpl::regName[" INTPTR_FORMAT "] returns NULL", value());

    st->print("%s",VMRegImpl::regName[value()]);

  } else if (is_stack()) {

    int stk = value() - stack0->value();

    st->print("[%d]", stk*4);

  } else {

    st->print("BAD!");

  }

}

void VMRegImpl::print() const { print_on(tty); }