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annotate agent/src/share/classes/sun/jvm/hotspot/runtime/sparc/SPARCRegisterMap.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.runtime.sparc; | |
| 26 | |
| 27 import java.util.*; | |
| 28 | |
| 29 import sun.jvm.hotspot.asm.sparc.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.runtime.*; | |
| 32 import sun.jvm.hotspot.types.*; | |
| 33 import sun.jvm.hotspot.utilities.*; | |
| 34 | |
| 35 public class SPARCRegisterMap extends RegisterMap { | |
| 36 /** Register window save area (for L and I regs) */ | |
| 37 private Address window; | |
| 38 /** Previous save area (for O regs, if needed) */ | |
| 39 private Address youngerWindow; | |
| 40 | |
| 41 private static int registerImplNumberOfRegisters; | |
| 42 | |
| 43 // Unified register numbering scheme: each 32-bits counts as a register | |
| 44 // number, so all the V9 registers take 2 slots. | |
| 45 private static int[] R_L_nums = new int[] {0+040,2+040,4+040,6+040,8+040,10+040,12+040,14+040}; | |
| 46 private static int[] R_I_nums = new int[] {0+060,2+060,4+060,6+060,8+060,10+060,12+060,14+060}; | |
| 47 private static int[] R_O_nums = new int[] {0+020,2+020,4+020,6+020,8+020,10+020,12+020,14+020}; | |
| 48 private static int[] R_G_nums = new int[] {0+000,2+000,4+000,6+000,8+000,10+000,12+000,14+000}; | |
| 49 | |
| 50 private static long badMask; | |
| 51 private static long R_LIO_mask; | |
| 52 | |
| 53 private static int sizeofJint; | |
| 54 | |
| 55 static { | |
| 56 VM.registerVMInitializedObserver(new Observer() { | |
| 57 public void update(Observable o, Object data) { | |
| 58 initialize(VM.getVM().getTypeDataBase()); | |
| 59 } | |
| 60 }); | |
| 61 } | |
| 62 | |
| 63 private static void initialize(TypeDataBase db) { | |
| 64 badMask = 0; | |
| 65 R_LIO_mask = 0; | |
| 66 | |
| 67 sizeofJint = (int) db.lookupType("jint").getSize(); | |
| 68 registerImplNumberOfRegisters = db.lookupIntConstant("RegisterImpl::number_of_registers").intValue(); | |
| 69 | |
| 70 for (int i = 0; i < 8; i++) { | |
| 71 Assert.that(R_L_nums[i] < locationValidTypeSize, "in first chunk"); | |
| 72 Assert.that(R_I_nums[i] < locationValidTypeSize, "in first chunk"); | |
| 73 Assert.that(R_O_nums[i] < locationValidTypeSize, "in first chunk"); | |
| 74 Assert.that(R_G_nums[i] < locationValidTypeSize, "in first chunk"); | |
| 75 } | |
| 76 | |
| 77 badMask |= ((long) 1 << R_O_nums[6]); // SP | |
| 78 badMask |= ((long) 1 << R_O_nums[7]); // cPC | |
| 79 badMask |= ((long) 1 << R_I_nums[6]); // FP | |
| 80 badMask |= ((long) 1 << R_I_nums[7]); // rPC | |
| 81 badMask |= ((long) 1 << R_G_nums[2]); // TLS | |
| 82 badMask |= ((long) 1 << R_G_nums[7]); // reserved by libthread | |
| 83 | |
| 84 for (int i = 0; i < 8; i++) { | |
| 85 R_LIO_mask |= ((long) 1 << R_L_nums[i]); | |
| 86 R_LIO_mask |= ((long) 1 << R_I_nums[i]); | |
| 87 R_LIO_mask |= ((long) 1 << R_O_nums[i]); | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 /** This is the only public constructor, and is only called by | |
| 92 SolarisSPARCJavaThread */ | |
| 93 public SPARCRegisterMap(JavaThread thread, boolean updateMap) { | |
| 94 super(thread, updateMap); | |
| 95 } | |
| 96 | |
| 97 protected SPARCRegisterMap(RegisterMap map) { | |
| 98 super(map); | |
| 99 } | |
| 100 | |
| 101 public Object clone() { | |
| 102 SPARCRegisterMap retval = new SPARCRegisterMap(this); | |
| 103 return retval; | |
| 104 } | |
| 105 | |
| 106 protected void clearPD() { | |
| 107 if (thread.hasLastJavaFrame()) { | |
| 108 Frame fr = thread.getLastFrame(); | |
| 109 window = fr.getSP(); | |
| 110 } else { | |
| 111 window = null; | |
| 112 if (VM.getVM().isDebugging()) { | |
| 113 Frame fr = thread.getCurrentFrameGuess(); | |
| 114 if (fr != null) { | |
| 115 window = fr.getSP(); | |
| 116 } | |
| 117 } | |
| 118 } | |
| 119 youngerWindow = null; | |
| 120 } | |
| 121 | |
| 122 protected Address getLocationPD(VMReg vmreg) { | |
| 123 VM vm = VM.getVM(); | |
| 124 int regname = vmreg.getValue(); | |
| 125 if (Assert.ASSERTS_ENABLED) { | |
| 126 Assert.that(0 <= regname && regname < regCount, "sanity check"); | |
| 127 } | |
| 128 | |
| 129 // Only the GPRs get handled this way | |
| 130 if (regname >= (registerImplNumberOfRegisters << 1)) { | |
| 131 return null; | |
| 132 } | |
| 133 | |
| 134 // don't talk about bad registers | |
| 135 if ((badMask & ((long) 1 << regname)) != 0) { | |
| 136 return null; | |
| 137 } | |
| 138 | |
| 139 // Convert to a GPR | |
| 140 int secondWord = 0; | |
| 141 // 32-bit registers for in, out and local | |
| 142 if (!isEven(regname)) { | |
| 143 if (vm.isLP64()) { | |
| 144 secondWord = sizeofJint; | |
| 145 } else { | |
| 146 return null; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 SPARCRegister reg = new SPARCRegister(regname >> 1); | |
| 151 if (reg.isOut()) { | |
| 152 if (Assert.ASSERTS_ENABLED) { | |
| 153 Assert.that(youngerWindow != null, "Younger window should be available"); | |
| 154 } | |
| 155 return youngerWindow.addOffsetTo(reg.afterSave().spOffsetInSavedWindow() + secondWord); | |
| 156 } | |
| 157 if (reg.isLocal() || reg.isIn()) { | |
| 158 if (Assert.ASSERTS_ENABLED) { | |
| 159 Assert.that(window != null, "Window should be available"); | |
| 160 } | |
| 161 return window.addOffsetTo(reg.spOffsetInSavedWindow() + secondWord); | |
| 162 } | |
| 163 | |
| 164 // Only the window'd GPRs get handled this way; not the globals. | |
| 165 return null; | |
| 166 } | |
| 167 | |
| 168 protected void initializePD() { | |
| 169 window = null; | |
| 170 youngerWindow = null; | |
| 171 // avoid the shift_individual_registers game | |
| 172 makeIntegerRegsUnsaved(); | |
| 173 } | |
| 174 | |
| 175 protected void initializeFromPD(RegisterMap map) { | |
| 176 SPARCRegisterMap srm = (SPARCRegisterMap) map; | |
| 177 window = srm.window; | |
| 178 youngerWindow = srm.youngerWindow; | |
| 179 // avoid the shift_individual_registers game | |
| 180 makeIntegerRegsUnsaved(); | |
| 181 } | |
| 182 | |
| 183 public void shiftWindow(Address sp, Address youngerSP) { | |
| 184 window = sp; | |
| 185 youngerWindow = youngerSP; | |
| 186 // Throw away locations for %i, %o, and %l registers: | |
| 187 // But do not throw away %g register locs. | |
| 188 if (locationValid[0] != 0) { | |
| 189 shiftIndividualRegisters(); | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 /** When popping out of compiled frames, we make all IRegs disappear. */ | |
| 194 public void makeIntegerRegsUnsaved() { | |
| 195 locationValid[0] = 0; | |
| 196 } | |
| 197 | |
| 198 //-------------------------------------------------------------------------------- | |
| 199 // Internals only below this point | |
| 200 // | |
| 201 | |
| 202 private void shiftIndividualRegisters() { | |
| 203 if (!getUpdateMap()) { | |
| 204 return; | |
| 205 } | |
| 206 | |
| 207 checkLocationValid(); | |
| 208 | |
| 209 long lv = locationValid[0]; | |
| 210 long lv0 = lv; | |
| 211 | |
| 212 lv &= ~R_LIO_mask; // clear %l, %o, %i regs | |
| 213 | |
| 214 // if we cleared some non-%g locations, we may have to do some shifting | |
| 215 if (lv != lv0) { | |
| 216 // copy %i0-%i5 to %o0-%o5, if they have special locations | |
| 217 // This can happen in within stubs which spill argument registers | |
| 218 // around a dynamic link operation, such as resolve_opt_virtual_call. | |
| 219 for (int i = 0; i < 8; i++) { | |
| 220 if ((lv0 & ((long) 1 << R_I_nums[i])) != 0) { | |
| 221 location[R_O_nums[i]] = location[R_I_nums[i]]; | |
| 222 lv |= ((long) 1 << R_O_nums[i]); | |
| 223 } | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 locationValid[0] = lv; | |
| 228 checkLocationValid(); | |
| 229 } | |
| 230 | |
| 231 private boolean isEven(int i) { | |
| 232 return (i & 1) == 0; | |
| 233 } | |
| 234 | |
| 235 private void checkLocationValid() { | |
| 236 if (Assert.ASSERTS_ENABLED) { | |
| 237 Assert.that((locationValid[0] & badMask) == 0, "cannot have special locations for SP,FP,TLS,etc."); | |
| 238 } | |
| 239 } | |
| 240 } |