| /* |
| * Copyright (c) 2000, 2015, 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.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); |
| } |