Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/x86/X86ThreadContext.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.debugger.x86; import sun.jvm.hotspot.debugger.*; /** 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. 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]; } /** 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); }