Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/runtime/sparc/SPARCRegisterMap.java @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
author | trims |
---|---|
date | Tue, 05 Apr 2011 14:12:31 -0700 |
parents | c18cbe5936b8 |
children |
line wrap: on
line source
/* * Copyright (c) 2000, 2005, 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.runtime.sparc; import java.util.*; import sun.jvm.hotspot.asm.sparc.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; public class SPARCRegisterMap extends RegisterMap { /** Register window save area (for L and I regs) */ private Address window; /** Previous save area (for O regs, if needed) */ private Address youngerWindow; private static int registerImplNumberOfRegisters; // Unified register numbering scheme: each 32-bits counts as a register // number, so all the V9 registers take 2 slots. private static int[] R_L_nums = new int[] {0+040,2+040,4+040,6+040,8+040,10+040,12+040,14+040}; private static int[] R_I_nums = new int[] {0+060,2+060,4+060,6+060,8+060,10+060,12+060,14+060}; private static int[] R_O_nums = new int[] {0+020,2+020,4+020,6+020,8+020,10+020,12+020,14+020}; private static int[] R_G_nums = new int[] {0+000,2+000,4+000,6+000,8+000,10+000,12+000,14+000}; private static long badMask; private static long R_LIO_mask; private static int sizeofJint; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static void initialize(TypeDataBase db) { badMask = 0; R_LIO_mask = 0; sizeofJint = (int) db.lookupType("jint").getSize(); registerImplNumberOfRegisters = db.lookupIntConstant("RegisterImpl::number_of_registers").intValue(); for (int i = 0; i < 8; i++) { Assert.that(R_L_nums[i] < locationValidTypeSize, "in first chunk"); Assert.that(R_I_nums[i] < locationValidTypeSize, "in first chunk"); Assert.that(R_O_nums[i] < locationValidTypeSize, "in first chunk"); Assert.that(R_G_nums[i] < locationValidTypeSize, "in first chunk"); } badMask |= ((long) 1 << R_O_nums[6]); // SP badMask |= ((long) 1 << R_O_nums[7]); // cPC badMask |= ((long) 1 << R_I_nums[6]); // FP badMask |= ((long) 1 << R_I_nums[7]); // rPC badMask |= ((long) 1 << R_G_nums[2]); // TLS badMask |= ((long) 1 << R_G_nums[7]); // reserved by libthread for (int i = 0; i < 8; i++) { R_LIO_mask |= ((long) 1 << R_L_nums[i]); R_LIO_mask |= ((long) 1 << R_I_nums[i]); R_LIO_mask |= ((long) 1 << R_O_nums[i]); } } /** This is the only public constructor, and is only called by SolarisSPARCJavaThread */ public SPARCRegisterMap(JavaThread thread, boolean updateMap) { super(thread, updateMap); } protected SPARCRegisterMap(RegisterMap map) { super(map); } public Object clone() { SPARCRegisterMap retval = new SPARCRegisterMap(this); return retval; } protected void clearPD() { if (thread.hasLastJavaFrame()) { Frame fr = thread.getLastFrame(); window = fr.getSP(); } else { window = null; if (VM.getVM().isDebugging()) { Frame fr = thread.getCurrentFrameGuess(); if (fr != null) { window = fr.getSP(); } } } youngerWindow = null; } protected Address getLocationPD(VMReg vmreg) { VM vm = VM.getVM(); int regname = vmreg.getValue(); if (Assert.ASSERTS_ENABLED) { Assert.that(0 <= regname && regname < regCount, "sanity check"); } // Only the GPRs get handled this way if (regname >= (registerImplNumberOfRegisters << 1)) { return null; } // don't talk about bad registers if ((badMask & ((long) 1 << regname)) != 0) { return null; } // Convert to a GPR int secondWord = 0; // 32-bit registers for in, out and local if (!isEven(regname)) { if (vm.isLP64()) { secondWord = sizeofJint; } else { return null; } } SPARCRegister reg = new SPARCRegister(regname >> 1); if (reg.isOut()) { if (Assert.ASSERTS_ENABLED) { Assert.that(youngerWindow != null, "Younger window should be available"); } return youngerWindow.addOffsetTo(reg.afterSave().spOffsetInSavedWindow() + secondWord); } if (reg.isLocal() || reg.isIn()) { if (Assert.ASSERTS_ENABLED) { Assert.that(window != null, "Window should be available"); } return window.addOffsetTo(reg.spOffsetInSavedWindow() + secondWord); } // Only the window'd GPRs get handled this way; not the globals. return null; } protected void initializePD() { window = null; youngerWindow = null; // avoid the shift_individual_registers game makeIntegerRegsUnsaved(); } protected void initializeFromPD(RegisterMap map) { SPARCRegisterMap srm = (SPARCRegisterMap) map; window = srm.window; youngerWindow = srm.youngerWindow; // avoid the shift_individual_registers game makeIntegerRegsUnsaved(); } public void shiftWindow(Address sp, Address youngerSP) { window = sp; youngerWindow = youngerSP; // Throw away locations for %i, %o, and %l registers: // But do not throw away %g register locs. if (locationValid[0] != 0) { shiftIndividualRegisters(); } } /** When popping out of compiled frames, we make all IRegs disappear. */ public void makeIntegerRegsUnsaved() { locationValid[0] = 0; } //-------------------------------------------------------------------------------- // Internals only below this point // private void shiftIndividualRegisters() { if (!getUpdateMap()) { return; } checkLocationValid(); long lv = locationValid[0]; long lv0 = lv; lv &= ~R_LIO_mask; // clear %l, %o, %i regs // if we cleared some non-%g locations, we may have to do some shifting if (lv != lv0) { // copy %i0-%i5 to %o0-%o5, if they have special locations // This can happen in within stubs which spill argument registers // around a dynamic link operation, such as resolve_opt_virtual_call. for (int i = 0; i < 8; i++) { if ((lv0 & ((long) 1 << R_I_nums[i])) != 0) { location[R_O_nums[i]] = location[R_I_nums[i]]; lv |= ((long) 1 << R_O_nums[i]); } } } locationValid[0] = lv; checkLocationValid(); } private boolean isEven(int i) { return (i & 1) == 0; } private void checkLocationValid() { if (Assert.ASSERTS_ENABLED) { Assert.that((locationValid[0] & badMask) == 0, "cannot have special locations for SP,FP,TLS,etc."); } } }