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annotate utils/lldbDataFormatters.py @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children afa8332a0e37
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1 """
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2 LLDB Formatters for LLVM data types.
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3
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4 Load into LLDB with 'command script import /path/to/lldbDataFormatters.py'
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5 """
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6
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7 def __lldb_init_module(debugger, internal_dict):
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8 debugger.HandleCommand('type category define -e llvm -l c++')
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9 debugger.HandleCommand('type synthetic add -w llvm '
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10 '-l lldbDataFormatters.SmallVectorSynthProvider '
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11 '-x "^llvm::SmallVectorImpl<.+>$"')
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12 debugger.HandleCommand('type synthetic add -w llvm '
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13 '-l lldbDataFormatters.SmallVectorSynthProvider '
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14 '-x "^llvm::SmallVector<.+,.+>$"')
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15 debugger.HandleCommand('type synthetic add -w llvm '
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16 '-l lldbDataFormatters.ArrayRefSynthProvider '
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17 '-x "^llvm::ArrayRef<.+>$"')
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18
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19 # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl
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20 class SmallVectorSynthProvider:
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21 def __init__(self, valobj, dict):
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22 self.valobj = valobj;
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23 self.update() # initialize this provider
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24
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25 def num_children(self):
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26 begin = self.begin.GetValueAsUnsigned(0)
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27 end = self.end.GetValueAsUnsigned(0)
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28 return (end - begin)/self.type_size
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29
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30 def get_child_index(self, name):
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31 try:
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32 return int(name.lstrip('[').rstrip(']'))
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33 except:
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34 return -1;
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35
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36 def get_child_at_index(self, index):
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37 # Do bounds checking.
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38 if index < 0:
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39 return None
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40 if index >= self.num_children():
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41 return None;
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42
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43 offset = index * self.type_size
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44 return self.begin.CreateChildAtOffset('['+str(index)+']',
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45 offset, self.data_type)
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46
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47 def update(self):
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48 self.begin = self.valobj.GetChildMemberWithName('BeginX')
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49 self.end = self.valobj.GetChildMemberWithName('EndX')
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50 the_type = self.valobj.GetType()
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51 # If this is a reference type we have to dereference it to get to the
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52 # template parameter.
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53 if the_type.IsReferenceType():
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54 the_type = the_type.GetDereferencedType()
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55
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56 self.data_type = the_type.GetTemplateArgumentType(0)
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57 self.type_size = self.data_type.GetByteSize()
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58 assert self.type_size != 0
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59
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60 class ArrayRefSynthProvider:
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61 """ Provider for llvm::ArrayRef """
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62 def __init__(self, valobj, dict):
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63 self.valobj = valobj;
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64 self.update() # initialize this provider
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65
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66 def num_children(self):
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67 return self.length
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68
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69 def get_child_index(self, name):
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70 try:
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71 return int(name.lstrip('[').rstrip(']'))
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72 except:
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73 return -1;
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74
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75 def get_child_at_index(self, index):
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76 if index < 0 or index >= self.num_children():
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77 return None;
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78 offset = index * self.type_size
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79 return self.data.CreateChildAtOffset('[' + str(index) + ']',
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80 offset, self.data_type)
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81
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82 def update(self):
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83 self.data = self.valobj.GetChildMemberWithName('Data')
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84 length_obj = self.valobj.GetChildMemberWithName('Length')
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85 self.length = length_obj.GetValueAsUnsigned(0)
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86 self.data_type = self.data.GetType().GetPointeeType()
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87 self.type_size = self.data_type.GetByteSize()
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88 assert self.type_size != 0