DBG: add expression functions for exception information

Author: mrexodia

src/dbg/expressionfunctions.cpp

@@ -133,6 +133,14 @@ void ExpressionFunctions::Init()
     RegisterEasy("arg.get,arg", argget);
     RegisterEasy("arg.set", argset);
 
+    //Exceptions
+    RegisterEasy("ex.firstchance", exfirstchance);
+    RegisterEasy("ex.addr", exaddr);
+    RegisterEasy("ex.code", excode);
+    RegisterEasy("ex.flags", exflags);
+    RegisterEasy("ex.infocount", exinfocount);
+    RegisterEasy("ex.info", exinfo);
+
     //Undocumented
     RegisterEasy("bpgoto", bpgoto);
 }

src/dbg/exprfunc.cpp

@@ -429,4 +429,36 @@ namespace Exprfunc
         SetContextDataEx(hActiveThread, UE_CIP, cip);
         return cip;
     }
+
+    duint exfirstchance()
+    {
+        return getLastExceptionInfo().dwFirstChance;
+    }
+
+    duint exaddr()
+    {
+        return (duint)getLastExceptionInfo().ExceptionRecord.ExceptionAddress;
+    }
+
+    duint excode()
+    {
+        return getLastExceptionInfo().ExceptionRecord.ExceptionCode;
+    }
+
+    duint exflags()
+    {
+        return getLastExceptionInfo().ExceptionRecord.ExceptionFlags;
+    }
+
+    duint exinfocount()
+    {
+        return getLastExceptionInfo().ExceptionRecord.NumberParameters;
+    }
+
+    duint exinfo(duint index)
+    {
+        if(index >= 16)
+            return 0;
+        return getLastExceptionInfo().ExceptionRecord.ExceptionInformation[index];
+    }
 }

src/dbg/exprfunc.h

@@ -72,4 +72,11 @@ namespace Exprfunc
     duint argset(duint index, duint value);
 
     duint bpgoto(duint cip);
+
+    duint exfirstchance();
+    duint exaddr();
+    duint excode();
+    duint exflags();
+    duint exinfocount();
+    duint exinfo(duint index);
 }