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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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.
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package sun.jvm.hotspot.debugger.x86;
import java.lang.annotation.Native;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.debugger.cdbg.*;
/** Specifies the thread context on x86 platforms; only a sub-portion
of the context is guaranteed to be present on all operating
systems. */
public abstract class X86ThreadContext implements ThreadContext {
// Taken from /usr/include/ia32/sys/reg.h on Solaris/x86
// NOTE: the indices for the various registers must be maintained as
// listed across various operating systems. However, only a small
// subset of the registers' values are guaranteed to be present (and
// must be present for the SA's stack walking to work): EAX, EBX,
// ECX, EDX, ESI, EDI, EBP, ESP, and EIP.
// One instance of the Native annotation is enough to trigger header generation
// for this file.
@Native
public static final int GS = 0;
public static final int FS = 1;
public static final int ES = 2;
public static final int DS = 3;
public static final int EDI = 4;
public static final int ESI = 5;
public static final int EBP = 6;
public static final int ESP = 7;
public static final int EBX = 8;
public static final int EDX = 9;
public static final int ECX = 10;
public static final int EAX = 11;
public static final int TRAPNO = 12;
public static final int ERR = 13;
public static final int EIP = 14;
public static final int CS = 15;
public static final int EFL = 16;
public static final int UESP = 17;
public static final int SS = 18;
// Additional state (not in reg.h) for debug registers
public static final int DR0 = 19;
public static final int DR1 = 20;
public static final int DR2 = 21;
public static final int DR3 = 22;
public static final int DR6 = 23;
public static final int DR7 = 24;
public static final int PC = EIP;
public static final int FP = EBP;
public static final int SP = UESP;
public static final int PS = EFL;
public static final int R0 = EAX;
public static final int R1 = EDX;
public static final int NPRGREG = 25;
private static final String[] regNames = {
"GS", "FS", "ES", "DS",
"EDI", "ESI", "EBP", "ESP",
"EBX", "EDX", "ECX", "EAX",
"TRAPNO", "ERR", "EIP", "CS",
"EFLAGS", "UESP", "SS",
"DR0", "DR1", "DR2", "DR3",
"DR6", "DR7"
};
// Ought to be int on x86 but we're stuck
private long[] data;
public X86ThreadContext() {
data = new long[NPRGREG];
}
public int getNumRegisters() {
return NPRGREG;
}
public String getRegisterName(int index) {
return regNames[index];
}
public void setRegister(int index, long value) {
data[index] = value;
}
public long getRegister(int index) {
return data[index];
}
public CFrame getTopFrame(Debugger dbg) {
return null;
}
/** This can't be implemented in this class since we would have to
tie the implementation to, for example, the debugging system */
public abstract void setRegisterAsAddress(int index, Address value);
/** This can't be implemented in this class since we would have to
tie the implementation to, for example, the debugging system */
public abstract Address getRegisterAsAddress(int index);
}