| /* |
| * Copyright (c) 2002, 2013, 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. |
| * |
| */ |
| |
| package sun.jvm.hotspot.debugger.linux; |
| |
| import sun.jvm.hotspot.debugger.*; |
| |
| public class LinuxAddress implements Address { |
| protected LinuxDebugger debugger; |
| protected long addr; |
| |
| public LinuxAddress(LinuxDebugger debugger, long addr) { |
| this.debugger = debugger; |
| this.addr = addr; |
| } |
| |
| // |
| // Basic Java routines |
| // |
| |
| public boolean equals(Object arg) { |
| if (arg == null) { |
| return false; |
| } |
| |
| if (!(arg instanceof LinuxAddress)) { |
| return false; |
| } |
| |
| return (addr == ((LinuxAddress) arg).addr); |
| } |
| |
| public int hashCode() { |
| // FIXME: suggestions on a better hash code? |
| return (int) addr; |
| } |
| |
| public String toString() { |
| return debugger.addressValueToString(addr); |
| } |
| |
| // |
| // C/C++-related routines |
| // |
| |
| public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) |
| throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readCInteger(addr + offset, numBytes, isUnsigned); |
| } |
| |
| public Address getAddressAt(long offset) |
| throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readAddress(addr + offset); |
| } |
| |
| public Address getCompOopAddressAt(long offset) |
| throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readCompOopAddress(addr + offset); |
| } |
| |
| public Address getCompKlassAddressAt(long offset) |
| throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readCompKlassAddress(addr + offset); |
| } |
| |
| // |
| // Java-related routines |
| // |
| |
| public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJBoolean(addr + offset); |
| } |
| |
| public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJByte(addr + offset); |
| } |
| |
| public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJChar(addr + offset); |
| } |
| |
| public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJDouble(addr + offset); |
| } |
| |
| public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJFloat(addr + offset); |
| } |
| |
| public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJInt(addr + offset); |
| } |
| |
| public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJLong(addr + offset); |
| } |
| |
| public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
| return debugger.readJShort(addr + offset); |
| } |
| |
| public OopHandle getOopHandleAt(long offset) |
| throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { |
| return debugger.readOopHandle(addr + offset); |
| } |
| |
| public OopHandle getCompOopHandleAt(long offset) |
| throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { |
| return debugger.readCompOopHandle(addr + offset); |
| } |
| |
| // Mutators -- not implemented for now (FIXME) |
| public void setCIntegerAt(long offset, long numBytes, long value) { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setAddressAt(long offset, Address value) { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJBooleanAt (long offset, boolean value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJByteAt (long offset, byte value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJCharAt (long offset, char value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJDoubleAt (long offset, double value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJFloatAt (long offset, float value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJIntAt (long offset, int value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJLongAt (long offset, long value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setJShortAt (long offset, short value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| public void setOopHandleAt (long offset, OopHandle value) |
| throws UnmappedAddressException, UnalignedAddressException { |
| throw new DebuggerException("Unimplemented"); |
| } |
| |
| // |
| // Arithmetic operations -- necessary evil. |
| // |
| |
| public Address addOffsetTo (long offset) throws UnsupportedOperationException { |
| long value = addr + offset; |
| if (value == 0) { |
| return null; |
| } |
| return new LinuxAddress(debugger, value); |
| } |
| |
| public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException { |
| long value = addr + offset; |
| if (value == 0) { |
| return null; |
| } |
| return new LinuxOopHandle(debugger, value); |
| } |
| |
| /** (FIXME: any signed/unsigned issues? Should this work for |
| OopHandles?) */ |
| public long minus(Address arg) { |
| if (arg == null) { |
| return addr; |
| } |
| return addr - ((LinuxAddress) arg).addr; |
| } |
| |
| // Two's complement representation. |
| // All negative numbers are larger than positive numbers. |
| // Numbers with the same sign can be compared normally. |
| // Test harness is below in main(). |
| |
| public boolean lessThan (Address a) { |
| if (a == null) { |
| return false; |
| } |
| LinuxAddress arg = (LinuxAddress) a; |
| if ((addr >= 0) && (arg.addr < 0)) { |
| return true; |
| } |
| if ((addr < 0) && (arg.addr >= 0)) { |
| return false; |
| } |
| return (addr < arg.addr); |
| } |
| |
| public boolean lessThanOrEqual (Address a) { |
| if (a == null) { |
| return false; |
| } |
| LinuxAddress arg = (LinuxAddress) a; |
| if ((addr >= 0) && (arg.addr < 0)) { |
| return true; |
| } |
| if ((addr < 0) && (arg.addr >= 0)) { |
| return false; |
| } |
| return (addr <= arg.addr); |
| } |
| |
| public boolean greaterThan (Address a) { |
| if (a == null) { |
| return true; |
| } |
| LinuxAddress arg = (LinuxAddress) a; |
| if ((addr >= 0) && (arg.addr < 0)) { |
| return false; |
| } |
| if ((addr < 0) && (arg.addr >= 0)) { |
| return true; |
| } |
| return (addr > arg.addr); |
| } |
| |
| public boolean greaterThanOrEqual(Address a) { |
| if (a == null) { |
| return true; |
| } |
| LinuxAddress arg = (LinuxAddress) a; |
| if ((addr >= 0) && (arg.addr < 0)) { |
| return false; |
| } |
| if ((addr < 0) && (arg.addr >= 0)) { |
| return true; |
| } |
| return (addr >= arg.addr); |
| } |
| |
| public Address andWithMask(long mask) throws UnsupportedOperationException { |
| long value = addr & mask; |
| if (value == 0) { |
| return null; |
| } |
| return new LinuxAddress(debugger, value); |
| } |
| |
| public Address orWithMask(long mask) throws UnsupportedOperationException { |
| long value = addr | mask; |
| if (value == 0) { |
| return null; |
| } |
| return new LinuxAddress(debugger, value); |
| } |
| |
| public Address xorWithMask(long mask) throws UnsupportedOperationException { |
| long value = addr ^ mask; |
| if (value == 0) { |
| return null; |
| } |
| return new LinuxAddress(debugger, value); |
| } |
| |
| |
| //-------------------------------------------------------------------------------- |
| // Internals only below this point |
| // |
| |
| long getValue() { |
| return addr; |
| } |
| |
| |
| private static void check(boolean arg, String failMessage) { |
| if (!arg) { |
| System.err.println(failMessage + ": FAILED"); |
| System.exit(1); |
| } |
| } |
| |
| // Test harness |
| public static void main(String[] args) { |
| // p/n indicates whether the interior address is really positive |
| // or negative. In unsigned terms, p1 < p2 < n1 < n2. |
| |
| LinuxAddress p1 = new LinuxAddress(null, 0x7FFFFFFFFFFFFFF0L); |
| LinuxAddress p2 = (LinuxAddress) p1.addOffsetTo(10); |
| LinuxAddress n1 = (LinuxAddress) p2.addOffsetTo(10); |
| LinuxAddress n2 = (LinuxAddress) n1.addOffsetTo(10); |
| |
| // lessThan positive tests |
| check(p1.lessThan(p2), "lessThan 1"); |
| check(p1.lessThan(n1), "lessThan 2"); |
| check(p1.lessThan(n2), "lessThan 3"); |
| check(p2.lessThan(n1), "lessThan 4"); |
| check(p2.lessThan(n2), "lessThan 5"); |
| check(n1.lessThan(n2), "lessThan 6"); |
| |
| // lessThan negative tests |
| check(!p1.lessThan(p1), "lessThan 7"); |
| check(!p2.lessThan(p2), "lessThan 8"); |
| check(!n1.lessThan(n1), "lessThan 9"); |
| check(!n2.lessThan(n2), "lessThan 10"); |
| |
| check(!p2.lessThan(p1), "lessThan 11"); |
| check(!n1.lessThan(p1), "lessThan 12"); |
| check(!n2.lessThan(p1), "lessThan 13"); |
| check(!n1.lessThan(p2), "lessThan 14"); |
| check(!n2.lessThan(p2), "lessThan 15"); |
| check(!n2.lessThan(n1), "lessThan 16"); |
| |
| // lessThanOrEqual positive tests |
| check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1"); |
| check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2"); |
| check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3"); |
| check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4"); |
| |
| check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5"); |
| check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6"); |
| check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7"); |
| check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8"); |
| check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9"); |
| check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10"); |
| |
| // lessThanOrEqual negative tests |
| check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11"); |
| check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12"); |
| check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13"); |
| check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14"); |
| check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15"); |
| check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16"); |
| |
| // greaterThan positive tests |
| check(n2.greaterThan(p1), "greaterThan 1"); |
| check(n2.greaterThan(p2), "greaterThan 2"); |
| check(n2.greaterThan(n1), "greaterThan 3"); |
| check(n1.greaterThan(p1), "greaterThan 4"); |
| check(n1.greaterThan(p2), "greaterThan 5"); |
| check(p2.greaterThan(p1), "greaterThan 6"); |
| |
| // greaterThan negative tests |
| check(!p1.greaterThan(p1), "greaterThan 7"); |
| check(!p2.greaterThan(p2), "greaterThan 8"); |
| check(!n1.greaterThan(n1), "greaterThan 9"); |
| check(!n2.greaterThan(n2), "greaterThan 10"); |
| |
| check(!p1.greaterThan(n2), "greaterThan 11"); |
| check(!p2.greaterThan(n2), "greaterThan 12"); |
| check(!n1.greaterThan(n2), "greaterThan 13"); |
| check(!p1.greaterThan(n1), "greaterThan 14"); |
| check(!p2.greaterThan(n1), "greaterThan 15"); |
| check(!p1.greaterThan(p2), "greaterThan 16"); |
| |
| // greaterThanOrEqual positive tests |
| check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1"); |
| check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2"); |
| check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3"); |
| check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4"); |
| |
| check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5"); |
| check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6"); |
| check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7"); |
| check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8"); |
| check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9"); |
| check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10"); |
| |
| // greaterThanOrEqual negative tests |
| check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11"); |
| check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12"); |
| check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13"); |
| check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14"); |
| check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15"); |
| check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16"); |
| |
| System.err.println("LinuxAddress: all tests passed successfully."); |
| } |
| } |