vmreg.cpp revision 1879:f95d63e2154a 
1/*
2 * Copyright (c) 1998, 2010, 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
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23 */
24
25#include "precompiled.hpp"
26#include "asm/assembler.hpp"
27#include "code/vmreg.hpp"
28
29// First VMReg value that could refer to a stack slot
30VMReg VMRegImpl::stack0 = (VMReg)(intptr_t)((ConcreteRegisterImpl::number_of_registers + 1) & ~1);
31
32// VMRegs are 4 bytes wide on all platforms
33const int VMRegImpl::stack_slot_size = 4;
34const int VMRegImpl::slots_per_word = wordSize / stack_slot_size;
35
36const int VMRegImpl::register_count = ConcreteRegisterImpl::number_of_registers;
37// Register names
38const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers];
39
40void VMRegImpl::print_on(outputStream* st) const {
41  if( is_reg() ) {
42    assert( VMRegImpl::regName[value()], "" );
43    st->print("%s",VMRegImpl::regName[value()]);
44  } else if (is_stack()) {
45    int stk = value() - stack0->value();
46    st->print("[%d]", stk*4);
47  } else {
48    st->print("BAD!");
49  }
50}
51