240 lines
13 KiB
Python
240 lines
13 KiB
Python
# Usage:
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# art/test/run-test --host --gdb [--64] [--interpreter] 004-JniTest
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# 'b Java_Main_shortMethod'
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# 'r'
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# 'command script import host_art_bt.py'
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# 'host_art_bt'
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from __future__ import print_function
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import sys
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import re
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import lldb
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def host_art_bt(debugger, command, result, internal_dict):
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prettified_frames = []
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lldb_frame_index = 0
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art_frame_index = 0
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target = debugger.GetSelectedTarget()
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process = target.GetProcess()
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thread = process.GetSelectedThread()
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while lldb_frame_index < thread.GetNumFrames():
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetModule() and re.match(r'JIT\(.*?\)',
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frame.GetModule().GetFileSpec().GetFilename()):
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# Compiled Java frame
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# Get function/filename/lineno from symbol context
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symbol = frame.GetSymbol()
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if not symbol:
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print('No symbol info for compiled Java frame: ', frame)
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sys.exit(1)
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line_entry = frame.GetLineEntry()
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prettified_frames.append({
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'function': symbol.GetName(),
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'file': str(line_entry.GetFileSpec()) if line_entry else None,
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'line': line_entry.GetLine() if line_entry else -1
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})
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# Skip art frames
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while True:
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art_stack_visitor = frame.EvaluateExpression(
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"""struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" +
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str(art_frame_index) +
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"""); visitor.WalkStack(true); visitor""")
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art_method = frame.EvaluateExpression(
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art_stack_visitor.GetName() + """.GetMethod()""")
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if art_method.GetValueAsUnsigned() != 0:
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art_method_name = frame.EvaluateExpression(
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"""art::PrettyMethod(""" + art_method.GetName() + """, true)""")
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art_method_name_data = frame.EvaluateExpression(
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art_method_name.GetName() + """.c_str()""").GetValueAsUnsigned()
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art_method_name_size = frame.EvaluateExpression(
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art_method_name.GetName() + """.length()""").GetValueAsUnsigned()
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error = lldb.SBError()
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art_method_name = process.ReadCStringFromMemory(
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art_method_name_data, art_method_name_size + 1, error)
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if not error.Success:
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print('Failed to read method name')
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sys.exit(1)
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if art_method_name != symbol.GetName():
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print('Function names in native symbol and art runtime stack do not match: ', symbol.GetName(), ' != ', art_method_name)
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art_frame_index = art_frame_index + 1
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break
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art_frame_index = art_frame_index + 1
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# Skip native frames
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index < thread.GetNumFrames():
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetModule() and re.match(
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r'JIT\(.*?\)', frame.GetModule().GetFileSpec().GetFilename()):
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# Another compile Java frame
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# Don't skip; leave it to the next iteration
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continue
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elif frame.GetSymbol() and (frame.GetSymbol().GetName() == 'art_quick_invoke_stub' or frame.GetSymbol().GetName() == 'art_quick_invoke_static_stub'):
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# art_quick_invoke_stub / art_quick_invoke_static_stub
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# Skip until we get past the next ArtMethod::Invoke()
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while True:
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index >= thread.GetNumFrames():
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print('ArtMethod::Invoke not found below art_quick_invoke_stub/art_quick_invoke_static_stub')
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sys.exit(1)
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetSymbol() and frame.GetSymbol().GetName(
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) == 'art::mirror::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)':
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lldb_frame_index = lldb_frame_index + 1
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break
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else:
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print('Invalid frame below compiled Java frame: ', frame)
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elif frame.GetSymbol() and frame.GetSymbol().GetName() == 'art_quick_generic_jni_trampoline':
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# Interpreted JNI frame for x86_64
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# Skip art frames
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while True:
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art_stack_visitor = frame.EvaluateExpression(
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"""struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" +
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str(art_frame_index) +
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"""); visitor.WalkStack(true); visitor""")
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art_method = frame.EvaluateExpression(
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art_stack_visitor.GetName() + """.GetMethod()""")
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if art_method.GetValueAsUnsigned() != 0:
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# Get function/filename/lineno from ART runtime
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art_method_name = frame.EvaluateExpression(
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"""art::PrettyMethod(""" + art_method.GetName() + """, true)""")
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art_method_name_data = frame.EvaluateExpression(
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art_method_name.GetName() + """.c_str()""").GetValueAsUnsigned()
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art_method_name_size = frame.EvaluateExpression(
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art_method_name.GetName() + """.length()""").GetValueAsUnsigned()
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error = lldb.SBError()
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function = process.ReadCStringFromMemory(
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art_method_name_data, art_method_name_size + 1, error)
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prettified_frames.append({
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'function': function,
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'file': None,
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'line': -1
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})
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art_frame_index = art_frame_index + 1
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break
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art_frame_index = art_frame_index + 1
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# Skip native frames
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index < thread.GetNumFrames():
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetSymbol() and (frame.GetSymbol().GetName() ==
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'art_quick_invoke_stub' or frame.GetSymbol().GetName() == 'art_quick_invoke_static_stub'):
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# art_quick_invoke_stub / art_quick_invoke_static_stub
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# Skip until we get past the next ArtMethod::Invoke()
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while True:
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index >= thread.GetNumFrames():
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print('ArtMethod::Invoke not found below art_quick_invoke_stub/art_quick_invoke_static_stub')
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sys.exit(1)
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetSymbol() and frame.GetSymbol().GetName(
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) == 'art::mirror::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)':
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lldb_frame_index = lldb_frame_index + 1
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break
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else:
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print('Invalid frame below compiled Java frame: ', frame)
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elif frame.GetSymbol() and re.search(r'art::interpreter::', frame.GetSymbol().GetName()):
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# Interpreted Java frame
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while True:
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index >= thread.GetNumFrames():
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print('art::interpreter::Execute not found in interpreter frame')
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sys.exit(1)
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetSymbol() and frame.GetSymbol().GetName(
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) == 'art::interpreter::Execute(art::Thread*, art::MethodHelper&, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue)':
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break
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# Skip art frames
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while True:
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art_stack_visitor = frame.EvaluateExpression(
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"""struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" +
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str(art_frame_index) +
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"""); visitor.WalkStack(true); visitor""")
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art_method = frame.EvaluateExpression(
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art_stack_visitor.GetName() + """.GetMethod()""")
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if art_method.GetValueAsUnsigned() != 0:
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# Get function/filename/lineno from ART runtime
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art_method_name = frame.EvaluateExpression(
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"""art::PrettyMethod(""" + art_method.GetName() + """, true)""")
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art_method_name_data = frame.EvaluateExpression(
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art_method_name.GetName() + """.c_str()""").GetValueAsUnsigned()
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art_method_name_size = frame.EvaluateExpression(
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art_method_name.GetName() + """.length()""").GetValueAsUnsigned()
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error = lldb.SBError()
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function = process.ReadCStringFromMemory(
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art_method_name_data, art_method_name_size + 1, error)
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line = frame.EvaluateExpression(
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art_stack_visitor.GetName() +
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""".GetMethod()->GetLineNumFromDexPC(""" +
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art_stack_visitor.GetName() +
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""".GetDexPc(true))""").GetValueAsUnsigned()
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file_name = frame.EvaluateExpression(
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art_method.GetName() + """->GetDeclaringClassSourceFile()""")
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file_name_data = file_name.GetValueAsUnsigned()
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file_name_size = frame.EvaluateExpression(
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"""(size_t)strlen(""" + file_name.GetName() + """)""").GetValueAsUnsigned()
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error = lldb.SBError()
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file_name = process.ReadCStringFromMemory(
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file_name_data, file_name_size + 1, error)
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if not error.Success():
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print('Failed to read source file name')
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sys.exit(1)
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prettified_frames.append({
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'function': function,
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'file': file_name,
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'line': line
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})
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art_frame_index = art_frame_index + 1
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break
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art_frame_index = art_frame_index + 1
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# Skip native frames
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while True:
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lldb_frame_index = lldb_frame_index + 1
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if lldb_frame_index >= thread.GetNumFrames():
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print('Can not get past interpreter native frames')
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sys.exit(1)
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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if frame.GetSymbol() and not re.search(
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r'art::interpreter::', frame.GetSymbol().GetName()):
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break
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else:
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# Other frames. Add them as-is.
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frame = thread.GetFrameAtIndex(lldb_frame_index)
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lldb_frame_index = lldb_frame_index + 1
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if frame.GetModule():
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module_name = frame.GetModule().GetFileSpec().GetFilename()
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if not module_name in [
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'libartd.so',
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'dalvikvm32',
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'dalvikvm64',
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'libc.so.6']:
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prettified_frames.append({
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'function': frame.GetSymbol().GetName() if frame.GetSymbol() else None,
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'file': str(frame.GetLineEntry().GetFileSpec()) if frame.GetLineEntry() else None,
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'line': frame.GetLineEntry().GetLine() if frame.GetLineEntry() else -1
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})
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for prettified_frame in prettified_frames:
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print(prettified_frame['function'], prettified_frame['file'], prettified_frame['line'])
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def __lldb_init_module(debugger, internal_dict):
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debugger.HandleCommand(
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'command script add -f host_art_bt.host_art_bt host_art_bt')
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