Mercurial > hg > CbC > CbC_llvm

annotate utils/lldbDataFormatters.py @ 109:6916f1d3a436

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author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 01 Feb 2016 03:02:03 +0900
parents afa8332a0e37
children c2174574ed3a
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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<.+>$"')
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18 debugger.HandleCommand('type summary add -w llvm '
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19 '-F lldbDataFormatters.OptionalSummaryProvider '
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20 '-x "^llvm::Optional<.+>$"')
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21
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22 # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl
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23 class SmallVectorSynthProvider:
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24 def __init__(self, valobj, dict):
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25 self.valobj = valobj;
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26 self.update() # initialize this provider
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27
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28 def num_children(self):
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29 begin = self.begin.GetValueAsUnsigned(0)
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30 end = self.end.GetValueAsUnsigned(0)
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31 return (end - begin)/self.type_size
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32
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33 def get_child_index(self, name):
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34 try:
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35 return int(name.lstrip('[').rstrip(']'))
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36 except:
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37 return -1;
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38
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39 def get_child_at_index(self, index):
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40 # Do bounds checking.
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41 if index < 0:
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42 return None
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43 if index >= self.num_children():
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44 return None;
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45
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46 offset = index * self.type_size
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47 return self.begin.CreateChildAtOffset('['+str(index)+']',
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48 offset, self.data_type)
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49
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50 def update(self):
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51 self.begin = self.valobj.GetChildMemberWithName('BeginX')
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52 self.end = self.valobj.GetChildMemberWithName('EndX')
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53 the_type = self.valobj.GetType()
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54 # If this is a reference type we have to dereference it to get to the
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55 # template parameter.
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56 if the_type.IsReferenceType():
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57 the_type = the_type.GetDereferencedType()
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58
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59 self.data_type = the_type.GetTemplateArgumentType(0)
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60 self.type_size = self.data_type.GetByteSize()
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61 assert self.type_size != 0
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62
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63 class ArrayRefSynthProvider:
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64 """ Provider for llvm::ArrayRef """
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65 def __init__(self, valobj, dict):
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66 self.valobj = valobj;
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67 self.update() # initialize this provider
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68
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69 def num_children(self):
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70 return self.length
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71
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72 def get_child_index(self, name):
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73 try:
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74 return int(name.lstrip('[').rstrip(']'))
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75 except:
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76 return -1;
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77
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78 def get_child_at_index(self, index):
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79 if index < 0 or index >= self.num_children():
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80 return None;
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81 offset = index * self.type_size
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82 return self.data.CreateChildAtOffset('[' + str(index) + ']',
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83 offset, self.data_type)
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84
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85 def update(self):
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86 self.data = self.valobj.GetChildMemberWithName('Data')
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87 length_obj = self.valobj.GetChildMemberWithName('Length')
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88 self.length = length_obj.GetValueAsUnsigned(0)
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89 self.data_type = self.data.GetType().GetPointeeType()
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90 self.type_size = self.data_type.GetByteSize()
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91 assert self.type_size != 0
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92
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93 def OptionalSummaryProvider(valobj, internal_dict):
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94 if not valobj.GetChildMemberWithName('hasVal').GetValueAsUnsigned(0):
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95 return 'None'
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96 underlying_type = valobj.GetType().GetTemplateArgumentType(0)
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97 storage = valobj.GetChildMemberWithName('storage')
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98 return str(storage.Cast(underlying_type))