[SCM] master: added frysk-core/frysk/expr/ExprSearchEngine.java

[swagiaal@sourceware.org]

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- Log -----------------------------------------------------------------
commit a2d4d3e8351a6754f802a1b2b39ef63ca28d55af
Author: Sami Wagiaalla <swagiaal@redhat.com>
Date:   Wed May 21 15:05:41 2008 -0400

    added frysk-core/frysk/expr/ExprSearchEngine.java

-----------------------------------------------------------------------

Summary of changes:
 frysk-core/frysk/expr/ExprSearchEngine.java |  134 +++++++++++++++++++++++++++
 1 files changed, 134 insertions(+), 0 deletions(-)
 create mode 100644 frysk-core/frysk/expr/ExprSearchEngine.java

First 500 lines of diff:
diff --git a/frysk-core/frysk/expr/ExprSearchEngine.java b/frysk-core/frysk/expr/ExprSearchEngine.java
new file mode 100644
index 0000000..7be7f93
--- /dev/null
+++ b/frysk-core/frysk/expr/ExprSearchEngine.java
@@ -0,0 +1,134 @@
+// This file is part of the program FRYSK.
+//
+// Copyright 2007, Red Hat Inc.
+//
+// FRYSK is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// FRYSK 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 for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with FRYSK; if not, write to the Free Software Foundation,
+// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+// 
+// In addition, as a special exception, Red Hat, Inc. gives You the
+// additional right to link the code of FRYSK with code not covered
+// under the GNU General Public License ("Non-GPL Code") and to
+// distribute linked combinations including the two, subject to the
+// limitations in this paragraph. Non-GPL Code permitted under this
+// exception must only link to the code of FRYSK through those well
+// defined interfaces identified in the file named EXCEPTION found in
+// the source code files (the "Approved Interfaces"). The files of
+// Non-GPL Code may instantiate templates or use macros or inline
+// functions from the Approved Interfaces without causing the
+// resulting work to be covered by the GNU General Public
+// License. Only Red Hat, Inc. may make changes or additions to the
+// list of Approved Interfaces. You must obey the GNU General Public
+// License in all respects for all of the FRYSK code and other code
+// used in conjunction with FRYSK except the Non-GPL Code covered by
+// this exception. If you modify this file, you may extend this
+// exception to your version of the file, but you are not obligated to
+// do so. If you do not wish to provide this exception without
+// modification, you must delete this exception statement from your
+// version and license this file solely under the GPL without
+// exception.
+
+package frysk.expr;
+
+import inua.eio.ByteBuffer;
+import inua.eio.ByteOrder;
+
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+
+import lib.dwfl.DwarfDie;
+import lib.dwfl.Dwfl;
+import lib.dwfl.DwflDieBias;
+
+import frysk.debuginfo.DebugInfoFrame;
+import frysk.debuginfo.ObjectDeclarationSearchEngine;
+import frysk.debuginfo.PieceLocation;
+import frysk.debuginfo.RegisterPiece;
+import frysk.dwfl.DwflCache;
+import frysk.isa.registers.Register;
+import frysk.isa.registers.Registers;
+import frysk.isa.registers.RegistersFactory;
+import frysk.proc.Task;
+import frysk.value.ObjectDeclaration;
+import frysk.value.Value;
+
+/**
+ * This class adapts {@link ObjectDeclarationSearchEngine} so that it is
+ * usable by ExprSymTab.
+ * 
+ * This class should be eliminated by modifying ExprSymTab to use 
+ * {@link ObjectDeclarationSearchEngine}
+ */
+public class ExprSearchEngine extends ObjectDeclarationSearchEngine implements ExprSymTab{
+
+    private final DebugInfoFrame frame;
+    private Task task;
+    
+    public ExprSearchEngine(DebugInfoFrame frame) {
+	super(frame.getTask());
+	this.frame = frame;
+	this.task = frame.getTask();
+    }
+    
+    public Value getValue(String s) {
+	if (s.charAt(0) == '$') {
+	    Registers regs = RegistersFactory.getRegisters(frame.getTask()
+							   .getISA());
+	    String regName = s.substring(1).trim();
+	    Register reg = regs.getRegister(regName);
+	    if (reg == null) {
+		throw new RuntimeException("unknown register: " + regName);
+	    }
+	    List pieces = new LinkedList();
+	    pieces.add(new RegisterPiece(reg, reg.getType().getSize(), frame));
+	    return new Value(reg.getType(), new PieceLocation(pieces));
+	}
+	
+	ObjectDeclaration objectDeclaration = this.getObjectInScope(frame, s);
+	return objectDeclaration.getValue(frame);
+    }
+
+
+    /**
+     * XXX: Who knows if this works; it is certainly not implemented
+     * correctly as it should use the ObjectDeclaration.
+     */
+    public void complete(String incomplete, List candidates) {
+	long pc = frame.getAdjustedAddress();
+	Dwfl dwfl = DwflCache.getDwfl(frame.getTask());
+	DwflDieBias bias = dwfl.getCompilationUnit(pc);
+	DwarfDie die = bias.die;
+	DwarfDie[] allDies = die.getScopes(pc - bias.bias);
+	List candidates_p = die.getScopeVarNames(allDies, incomplete);
+	for (Iterator i = candidates_p.iterator(); i.hasNext();) {
+            String sNext = (String) i.next();
+            candidates.add(sNext);
+        }
+    }
+    
+    public ByteOrder order()
+    {
+	return task.getISA().order();
+    }
+    
+    public ByteBuffer taskMemory()
+    {
+	return task.getMemory();
+    }
+    
+    public int getWordSize()
+    {
+	return task.getISA().wordSize();
+    }
+    
+}


hooks/post-receive
--
frysk system monitor/debugger