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475917db88
Just something I cooked up really quickly b/c I needed it. If you want to use this, lldb-with-tools will auto-import it, so I suggest that you use that.
48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
"""
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LLDB Formatters for LLVM data types for use in the swift project.
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Load into LLDB with 'command script import /path/to/lldbDataFormatters.py'
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"""
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import sys
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def __lldb_init_module(debugger, internal_dict):
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tName = 'lldbSwiftDataFormatters.SmallBitVectorSummaryProvider'
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debugger.HandleCommand('type summary add -w llvm '
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'-F %s -x "^llvm::SmallBitVector$"' % tName)
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def SmallBitVectorSummaryProvider(valobj, internal_dict):
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underlyingValue = valobj.GetChildMemberWithName('X').GetValueAsUnsigned()
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numBaseBits = 32
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is64Bit = sys.maxsize > 2**32
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if is64Bit:
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numBaseBits = 64
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smallNumRawBits = numBaseBits - 1
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smallNumSizeBits = None
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if numBaseBits == 32:
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smallNumSizeBits = 5
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elif numBaseBits == 64:
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smallNumSizeBits = 6
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else:
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smallNumSizeBits = smallNumRawBits
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smallNumDataBits = smallNumRawBits - smallNumSizeBits
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# If our underlying value is not small, print we can not dump large values.
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isSmallMask = 1
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if (underlyingValue & isSmallMask) == 0:
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return '<can not read large SmallBitVector>'
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smallRawBits = underlyingValue >> 1
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smallSize = smallRawBits >> smallNumDataBits
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bits = smallRawBits & ((1 << (smallSize + 1)) - 1)
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res = "["
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for i in reversed(range(0, smallSize)):
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if bool(bits & (1 << i)):
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res += '1'
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else:
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res += '0'
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res += "]"
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return res
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