Add python scripts to extract debug info using LLDB and do comparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121079 91177308-0d34-0410-b5e6-96231b3b80d8

utils/CollectDebugInfoUsingLLDB.py

@@ -0,0 +1,143 @@
+#!/usr/bin/python
+
+#----------------------------------------------------------------------
+# Be sure to add the python path that points to the LLDB shared library.
+# On MacOSX csh, tcsh:
+#   setenv PYTHONPATH /Developer/Library/PrivateFrameworks/LLDB.framework/Resources/Python
+# On MacOSX sh, bash:
+#   export PYTHONPATH=/Developer/Library/PrivateFrameworks/LLDB.framework/Resources/Python
+#----------------------------------------------------------------------
+
+import lldb
+import os
+import sys
+import time
+
+def print_var_value (v, file, frame):
+        if v.GetNumChildren() > 0:
+            for c in range(v.GetNumChildren()):
+                if v.GetChildAtIndex(c) is None:
+                        file.write("None")
+                else:
+                        if (v.GetChildAtIndex(c).GetName()) is None:
+                                file.write("None")
+                        else:
+                                file.write(v.GetChildAtIndex(c).GetName())
+                                file.write('=')
+                                print_var_value(v.GetChildAtIndex(c), file, frame)
+                                file.write(',')
+        else:
+            if v.GetValue(frame) is None:
+                file.write("None")
+            else:
+                file.write(v.GetValue(frame))
+
+
+def print_vars (vars, fname, line, file, frame, target, thread):
+    # disable this thread.
+    count = thread.GetStopReasonDataCount()
+    bid = 0
+    tid = 0
+    for i in range(count):
+        id = thread.GetStopReasonDataAtIndex(i)
+        bp = target.FindBreakpointByID(id)
+        if bp.IsValid():
+            if bp.IsEnabled() == True:
+                    bid = bp.GetID()
+                    tid = bp.GetThreadID()
+                    bp.SetEnabled(False)
+        else:
+            bp_loc = bp.FindLocationByID(thread.GetStopReasonDataAtIndex(i+1))
+            if bp_loc.IsValid():
+                bid = bp_loc.GetBreakPoint().GetID()
+                tid = bp_loc.ThreadGetID()
+                # print " { ", bp_loc.ThreadGetID(), " : ", bp_loc.GetBreakPoint().GetID(), " }} "
+                bp_loc.SetEnabled(False);
+
+    for i in range(vars.GetSize()):
+        file.write("#Argument ")
+        file.write(fname)
+        file.write(':')
+        file.write(str(line))
+        file.write(' ')
+        file.write(str(tid))
+        file.write(':')
+        file.write(str(bid))
+        file.write(' ')
+        v = vars.GetValueAtIndex(i)
+        file.write(v.GetName())
+        file.write(' ')
+        print_var_value (v, file, frame)
+        file.write('\n')
+
+def set_breakpoints (target, breakpoint_filename):
+    f = open(breakpoint_filename, "r")
+    lines = f.readlines()
+    for l in range(len(lines)):
+        c = lines[l].split()
+        # print "setting break point - ", c
+        bp = target.BreakpointCreateByLocation (str(c[0]), int(c[1]))
+    f.close()
+
+def stop_at_breakpoint (process):
+    if process.IsValid():
+        state = process.GetState()
+        if state != lldb.eStateStopped:
+            return lldb.eStateInvalid
+        thread = process.GetThreadAtIndex(0)
+        if thread.IsValid():
+            if thread.GetStopReason() == lldb.eStopReasonBreakpoint:
+                    return lldb.eStateStopped
+            else:
+                    return lldb.eStateInvalid
+        else:
+            return lldb.eStateInvalid
+    else:
+        return lldb.eStateInvalid
+
+# Create a new debugger instance
+debugger = lldb.SBDebugger.Create()
+
+# When we step or continue, don't return from the function until the process 
+# stops. We do this by setting the async mode to false.
+debugger.SetAsync (False)
+
+# Create a target from a file and arch
+##print "Creating a target for '%s'" % sys.argv[1]
+
+target = debugger.CreateTargetWithFileAndArch (sys.argv[1], lldb.LLDB_ARCH_DEFAULT)
+
+if target.IsValid():
+    #print "target is valid"
+    set_breakpoints (target, sys.argv[2])
+    #main_bp = target.BreakpointCreateByLocation ("byval-alignment.c", 11)
+    #main_bp2 = target.BreakpointCreateByLocation ("byval-alignment.c", 20)
+
+    ##print main_bp
+
+    # Launch the process. Since we specified synchronous mode, we won't return
+    # from this function until we hit the breakpoint at main
+    process = target.LaunchProcess ([''], [''], "/dev/stdout", 0, False)
+    file=open(str(sys.argv[3]), 'w')    
+    # Make sure the launch went ok
+    while stop_at_breakpoint(process) == lldb.eStateStopped:
+        thread = process.GetThreadAtIndex (0)
+        frame = thread.GetFrameAtIndex (0)
+        if frame.IsValid():
+            # #Print some simple frame info
+            ##print frame
+            #print "frame is valid"
+            function = frame.GetFunction()
+            if function.IsValid():
+                fname = function.GetMangledName()
+                if fname is None:
+                    fname = function.GetName()
+                #print "function : ",fname
+                vars = frame.GetVariables(1,0,0,0)
+                line = frame.GetLineEntry().GetLine()
+                print_vars (vars, fname, line, file, frame, target, thread)
+                #print vars
+        process.Continue()
+    file.close()
+
+lldb.SBDebugger.Terminate()

utils/CompareDebugInfo.py

@@ -0,0 +1,64 @@
+#!/usr/bin/python
+
+import os
+import sys
+
+class BreakPoint:
+    def __init__(self, bp_name):
+        self.name = bp_name
+        self.values = {}
+
+    def recordArgument(self, arg_name, value):
+        self.values[arg_name] = value
+        
+    def __repr__(self):
+        print self.name
+        items = self.values.items()
+        for i in range(len(items)):
+            print items[i][0]," = ",items[i][1]
+        return ''
+
+    def __cmp__(self, other):
+        return cmp(self.values, other.values)
+
+def read_input(filename, dict):
+    f = open(filename, "r")
+    lines = f.readlines()
+    for l in range(len(lines)):
+        c = lines[l].split()
+        if c[0] == "#Argument":
+            bp = dict.get(c[2])
+            if bp is None:
+                bp = BreakPoint(c[1])
+            dict[c[2]] = bp
+            bp.recordArgument(c[3], c[4])
+
+    f.close()
+    return
+
+f1_breakpoints = {}
+read_input(sys.argv[1], f1_breakpoints)
+f1_items = f1_breakpoints.items()
+
+f2_breakpoints = {}
+read_input(sys.argv[2], f2_breakpoints)
+f2_items = f2_breakpoints.items()
+    
+mismatch = 0
+for f2bp in range(len(f2_items)):
+    id = f2_items[f2bp][0]
+    bp = f2_items[f2bp][1]
+    bp1 = f1_breakpoints.get(id)
+    if bp1 is None:
+        print "bp is missing"
+    else:
+        if bp1 != bp:
+            mismatch = mismatch + 1
+
+l2 = len(f2_items)
+print "=========="
+if l2 != 0:
+    print sys.argv[3]," success rate is", (l2-mismatch)*100/l2,"%"
+else:
+    print sys.argv[3]," success rate is 100%"
+print "=========="