tools: acrntrace: Refactor vmexit_analyzer based on new trace format

- Refactor vmexit_analyzer based on new trace format (raw data). We can get
    the same output like original implementation.

  - Remove irq related analysis. Will add it back with an option "--irq".

  - Remove unused VMEXIT_EPT_VIOLATION_GVT

Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Reviewed-by: Yan, Like <like.yan@intel.com>
Reviewed-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>

tools/acrntrace/scripts/acrnalyze.py

@@ -4,7 +4,6 @@
 """
 This is the main script of arnalyzer, which:
 - parse the options
-- pre-process the trace data file
 - call a specific script to do analysis
 """
 
@@ -46,22 +45,6 @@ def do_analysis(ifile, ofile, analyzer):
     for alyer in analyzer:
         alyer(ifile, ofile)
 
-# pre process to make sure the trace data start and end with VMENTER
-def pre_process(ifile, evstr):
-    """invoke sh script to preprocess the data file
-
-    Args:
-        ifile: input trace data file
-        evstr: event string, after the processing, the data file should
-                start and end with the string
-    Returns:
-        status of sh script execution
-    Raises:
-        NA
-    """
-    status = os.system('bash pre_process.sh %s %s' % (ifile, evstr))
-    return status
-
 def main(argv):
     """Main enterance function
 
@@ -103,11 +86,7 @@ def main(argv):
     assert outputfile != '', "output file is required"
     assert analyzer != '', 'MUST contain one of analyzer: ''vm_exit'
 
-    status = pre_process(inputfile, 'VM_ENTER')
-    if status == 0:
-        do_analysis(inputfile, outputfile, analyzer)
-    else:
-        print "Invalid trace data file %s" % (inputfile)
+    do_analysis(inputfile, outputfile, analyzer)
 
 if __name__ == "__main__":
     main(sys.argv[1:])