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src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/windbg/WindbgDebuggerLocal.java

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8248238: Adding Windows support to OpenJDK on AArch64

Summary: Adding Windows support for AArch64

Contributed-by: Ludovic Henry <luhenry@microsoft.com>, Monica Beckwith <monica.beckwith@microsoft.com>
Reviewed-by:


  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  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.debugger.windbg;
  26 
  27 import java.io.*;
  28 import java.net.*;
  29 import java.util.*;
  30 import sun.jvm.hotspot.debugger.*;

  31 import sun.jvm.hotspot.debugger.amd64.*;
  32 import sun.jvm.hotspot.debugger.x86.*;

  33 import sun.jvm.hotspot.debugger.windbg.amd64.*;
  34 import sun.jvm.hotspot.debugger.windbg.x86.*;
  35 import sun.jvm.hotspot.debugger.win32.coff.*;
  36 import sun.jvm.hotspot.debugger.cdbg.*;
  37 import sun.jvm.hotspot.debugger.cdbg.basic.BasicDebugEvent;
  38 import sun.jvm.hotspot.utilities.*;
  39 import sun.jvm.hotspot.utilities.memo.*;
  40 import sun.jvm.hotspot.runtime.*;
  41 
  42 /** <P> An implementation of the JVMDebugger interface which talks to
  43     windbg and symbol table management is done in Java. </P>
  44 
  45     <P> <B>NOTE</B> that since we have the notion of fetching "Java
  46     primitive types" from the remote process (which might have
  47     different sizes than we expect) we have a bootstrapping
  48     problem. We need to know the sizes of these types before we can
  49     fetch them. The current implementation solves this problem by
  50     requiring that it be configured with these type sizes before they
  51     can be fetched. The readJ(Type) routines here will throw a
  52     RuntimeException if they are called before the debugger is


  96     utils = new DebuggerUtilities(machDesc.getAddressSize(), machDesc.isBigEndian()) {
  97            public void checkAlignment(long address, long alignment) {
  98              // Need to override default checkAlignment because we need to
  99              // relax alignment constraints on Windows/x86
 100              if ( (address % alignment != 0)
 101                 &&(alignment != 8 || address % 4 != 0)) {
 102                 throw new UnalignedAddressException(
 103                         "Trying to read at address: "
 104                       + addressValueToString(address)
 105                       + " with alignment: " + alignment,
 106                         address);
 107              }
 108            }
 109         };
 110 
 111     String cpu = PlatformInfo.getCPU();
 112     if (cpu.equals("x86")) {
 113        threadFactory = new WindbgX86ThreadFactory(this);
 114     } else if (cpu.equals("amd64")) {
 115        threadFactory = new WindbgAMD64ThreadFactory(this);


 116     }
 117 
 118     if (useCache) {
 119       // Cache portion of the remote process's address space.
 120       // Fetching data over the socket connection to dbx is slow.
 121       // Might be faster if we were using a binary protocol to talk to
 122       // dbx, but would have to test. For now, this cache works best
 123       // if it covers the entire heap of the remote process. FIXME: at
 124       // least should make this tunable from the outside, i.e., via
 125       // the UI. This is a cache of 4096 4K pages, or 16 MB. The page
 126       // size must be adjusted to be the hardware's page size.
 127       // (FIXME: should pick this up from the debugger.)
 128       initCache(4096, 4096);
 129     }
 130     // FIXME: add instantiation of thread factory
 131 
 132   }
 133 
 134   /** From the Debugger interface via JVMDebugger */
 135   public boolean hasProcessList() throws DebuggerException {




  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  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.debugger.windbg;
  26 
  27 import java.io.*;
  28 import java.net.*;
  29 import java.util.*;
  30 import sun.jvm.hotspot.debugger.*;
  31 import sun.jvm.hotspot.debugger.aarch64.*;
  32 import sun.jvm.hotspot.debugger.amd64.*;
  33 import sun.jvm.hotspot.debugger.x86.*;
  34 import sun.jvm.hotspot.debugger.windbg.aarch64.*;
  35 import sun.jvm.hotspot.debugger.windbg.amd64.*;
  36 import sun.jvm.hotspot.debugger.windbg.x86.*;
  37 import sun.jvm.hotspot.debugger.win32.coff.*;
  38 import sun.jvm.hotspot.debugger.cdbg.*;
  39 import sun.jvm.hotspot.debugger.cdbg.basic.BasicDebugEvent;
  40 import sun.jvm.hotspot.utilities.*;
  41 import sun.jvm.hotspot.utilities.memo.*;
  42 import sun.jvm.hotspot.runtime.*;
  43 
  44 /** <P> An implementation of the JVMDebugger interface which talks to
  45     windbg and symbol table management is done in Java. </P>
  46 
  47     <P> <B>NOTE</B> that since we have the notion of fetching "Java
  48     primitive types" from the remote process (which might have
  49     different sizes than we expect) we have a bootstrapping
  50     problem. We need to know the sizes of these types before we can
  51     fetch them. The current implementation solves this problem by
  52     requiring that it be configured with these type sizes before they
  53     can be fetched. The readJ(Type) routines here will throw a
  54     RuntimeException if they are called before the debugger is


  98     utils = new DebuggerUtilities(machDesc.getAddressSize(), machDesc.isBigEndian()) {
  99            public void checkAlignment(long address, long alignment) {
 100              // Need to override default checkAlignment because we need to
 101              // relax alignment constraints on Windows/x86
 102              if ( (address % alignment != 0)
 103                 &&(alignment != 8 || address % 4 != 0)) {
 104                 throw new UnalignedAddressException(
 105                         "Trying to read at address: "
 106                       + addressValueToString(address)
 107                       + " with alignment: " + alignment,
 108                         address);
 109              }
 110            }
 111         };
 112 
 113     String cpu = PlatformInfo.getCPU();
 114     if (cpu.equals("x86")) {
 115        threadFactory = new WindbgX86ThreadFactory(this);
 116     } else if (cpu.equals("amd64")) {
 117        threadFactory = new WindbgAMD64ThreadFactory(this);
 118     } else if (cpu.equals("aarch64")) {
 119       threadFactory = new WindbgAARCH64ThreadFactory(this);
 120     }
 121 
 122     if (useCache) {
 123       // Cache portion of the remote process's address space.
 124       // Fetching data over the socket connection to dbx is slow.
 125       // Might be faster if we were using a binary protocol to talk to
 126       // dbx, but would have to test. For now, this cache works best
 127       // if it covers the entire heap of the remote process. FIXME: at
 128       // least should make this tunable from the outside, i.e., via
 129       // the UI. This is a cache of 4096 4K pages, or 16 MB. The page
 130       // size must be adjusted to be the hardware's page size.
 131       // (FIXME: should pick this up from the debugger.)
 132       initCache(4096, 4096);
 133     }
 134     // FIXME: add instantiation of thread factory
 135 
 136   }
 137 
 138   /** From the Debugger interface via JVMDebugger */
 139   public boolean hasProcessList() throws DebuggerException {


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