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This patch introduces a concept of "frame recognizer" and "recognized frame". This should be an extensible mechanism that retrieves information about special frames based on ABI, arguments or other special properties of that frame, even without source code. A few examples where that could be useful could be 1) objc_exception_throw, where we'd like to get the current exception, 2) terminate_with_reason and extracting the current terminate string, 3) recognizing Objective-C frames and automatically extracting the receiver+selector, or perhaps all arguments (based on selector). Differential Revision: https://reviews.llvm.org/D44603 llvm-svn: 345693
22 lines
770 B
Python
22 lines
770 B
Python
# encoding: utf-8
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import lldb
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class MyFrameRecognizer(object):
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def get_recognized_arguments(self, frame):
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if frame.name == "foo":
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arg1 = frame.EvaluateExpression("$arg1").signed
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arg2 = frame.EvaluateExpression("$arg2").signed
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val1 = lldb.target.CreateValueFromExpression("a", "%d" % arg1)
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val2 = lldb.target.CreateValueFromExpression("b", "%d" % arg2)
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return [val1, val2]
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elif frame.name == "bar":
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arg1 = frame.EvaluateExpression("$arg1").signed
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val1 = lldb.target.CreateValueFromExpression("a", "(int *)%d" % arg1)
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return [val1]
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return []
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class MyOtherFrameRecognizer(object):
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def get_recognized_arguments(self, frame):
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return []
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