lldb: add llgo plugin
This commit is contained in:
Li Jie
504
_lldb/test.py
Normal file
504
_lldb/test.py
Normal file
@@ -0,0 +1,504 @@
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# pylint: disable=missing-module-docstring,missing-class-docstring,missing-function-docstring
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import os
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import sys
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import argparse
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import signal
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from dataclasses import dataclass, field
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from typing import List
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import lldb
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class LLDBTestException(Exception):
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pass
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def log(*args, **kwargs):
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print(*args, **kwargs, flush=True)
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@dataclass
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class Test:
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source_file: str
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line_number: int
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variable: str
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expected_value: str
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@dataclass
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class TestResult:
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test: Test
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status: str
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actual: str = None
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message: str = None
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missing: set = None
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extra: set = None
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@dataclass
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class TestCase:
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source_file: str
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start_line: int
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end_line: int
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tests: List[Test]
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@dataclass
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class CaseResult:
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test_case: TestCase
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function: str
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results: List[TestResult]
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@dataclass
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class TestResults:
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total: int = 0
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passed: int = 0
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failed: int = 0
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case_results: List[CaseResult] = field(default_factory=list)
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class LLDBDebugger:
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def __init__(self, executable_path, plugin_path=None):
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self.executable_path = executable_path
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self.plugin_path = plugin_path
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self.debugger = lldb.SBDebugger.Create()
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self.debugger.SetAsync(False)
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self.target = None
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self.process = None
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self.type_mapping = {
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'long': 'int',
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'unsigned long': 'uint',
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# Add more mappings as needed
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}
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def setup(self):
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if self.plugin_path:
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self.debugger.HandleCommand(
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f'command script import "{self.plugin_path}"')
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self.target = self.debugger.CreateTarget(self.executable_path)
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if not self.target:
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raise LLDBTestException(f"Failed to create target for {
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self.executable_path}")
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def set_breakpoint(self, file_spec, line_number):
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bp = self.target.BreakpointCreateByLocation(
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file_spec, line_number)
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if not bp.IsValid():
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raise LLDBTestException(f"Failed to set breakpoint at {
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file_spec}:{line_number}")
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return bp
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def run_to_breakpoint(self):
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if not self.process:
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self.process = self.target.LaunchSimple(None, None, os.getcwd())
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else:
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self.process.Continue()
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if self.process.GetState() != lldb.eStateStopped:
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raise LLDBTestException("Process didn't stop at breakpoint")
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def get_variable_value(self, var_name):
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frame = self.process.GetSelectedThread().GetFrameAtIndex(0)
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if isinstance(var_name, lldb.SBValue):
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var = var_name
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else:
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# process struct field access
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parts = var_name.split('.')
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if len(parts) > 1:
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var = frame.FindVariable(parts[0])
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for part in parts[1:]:
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if var.IsValid():
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var = var.GetChildMemberWithName(part)
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else:
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return None
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else:
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actual_var_name = var_name.split('=')[0].strip()
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if '(' in actual_var_name:
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actual_var_name = actual_var_name.split('(')[-1].strip()
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var = frame.FindVariable(actual_var_name)
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return self.format_value(var) if var.IsValid() else None
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def format_value(self, var, include_type=True):
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if var.IsValid():
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type_name = var.GetTypeName()
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var_type = var.GetType()
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type_class = var_type.GetTypeClass()
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if type_name.startswith('[]'): # Slice
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return self.format_slice(var)
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elif var_type.IsArrayType():
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return self.format_array(var)
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elif type_name == 'string': # String
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return self.format_string(var)
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elif type_class in [lldb.eTypeClassStruct, lldb.eTypeClassClass]:
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return self.format_struct(var, include_type)
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else:
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value = var.GetValue()
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summary = var.GetSummary()
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if value is not None:
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return str(value)
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elif summary is not None:
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return summary
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else:
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return "None"
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return "None"
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def format_slice(self, var):
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length = int(var.GetChildMemberWithName('len').GetValue())
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data_ptr = var.GetChildMemberWithName('data')
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elements = []
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# Get the actual pointer value
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ptr_value = int(data_ptr.GetValue(), 16)
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element_type = data_ptr.GetType().GetPointeeType()
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element_size = element_type.GetByteSize()
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for i in range(length):
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element_address = ptr_value + i * element_size
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element = self.target.CreateValueFromAddress(
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f"element_{i}", lldb.SBAddress(element_address, self.target), element_type)
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value = self.format_value(element, include_type=False)
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elements.append(value)
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type_name = var.GetType().GetName().split(
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'[]')[-1] # Extract element type from slice type
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type_name = self.type_mapping.get(type_name, type_name) # Use mapping
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result = f"[]{type_name}{{{', '.join(elements)}}}"
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return result
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def format_array(self, var):
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elements = []
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for i in range(var.GetNumChildren()):
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value = self.format_value(
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var.GetChildAtIndex(i), include_type=False)
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elements.append(value)
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array_size = var.GetNumChildren()
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type_name = var.GetType().GetArrayElementType().GetName()
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type_name = self.type_mapping.get(type_name, type_name) # Use mapping
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return f"[{array_size}]{type_name}{{{', '.join(elements)}}}"
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def format_pointer(self, var):
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target = var.Dereference()
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if target.IsValid():
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return f"*{self.get_variable_value(target.GetName())}"
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else:
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return str(var.GetValue())
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def format_string(self, var):
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summary = var.GetSummary()
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if summary is not None:
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return summary.strip('"')
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else:
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data = var.GetChildMemberWithName('data').GetValue()
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length = int(var.GetChildMemberWithName('len').GetValue())
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if data and length:
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error = lldb.SBError()
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return self.process.ReadCStringFromMemory(int(data, 16), length + 1, error)
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return "None"
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def format_struct(self, var, include_type=True):
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children = []
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for i in range(var.GetNumChildren()):
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child = var.GetChildAtIndex(i)
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child_name = child.GetName()
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child_value = self.format_value(child)
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children.append(f"{child_name} = {child_value}")
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struct_content = f"{{{', '.join(children)}}}"
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if include_type:
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struct_name = var.GetTypeName()
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return f"{struct_name}{struct_content}"
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else:
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return struct_content
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def get_all_variable_names(self):
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frame = self.process.GetSelectedThread().GetFrameAtIndex(0)
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return set(var.GetName() for var in frame.GetVariables(True, True, True, False))
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def get_current_function_name(self):
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frame = self.process.GetSelectedThread().GetFrameAtIndex(0)
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return frame.GetFunctionName()
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def cleanup(self):
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if self.process and self.process.IsValid():
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self.process.Kill()
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lldb.SBDebugger.Destroy(self.debugger)
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def run_console(self):
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log("\nEntering LLDB interactive mode.")
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log("Type 'quit' to exit and continue with the next test case.")
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log(
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"Use Ctrl+D to exit and continue, or Ctrl+C to abort all tests.")
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old_stdin, old_stdout, old_stderr = sys.stdin, sys.stdout, sys.stderr
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sys.stdin, sys.stdout, sys.stderr = sys.__stdin__, sys.__stdout__, sys.__stderr__
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self.debugger.SetAsync(True)
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self.debugger.HandleCommand("settings set auto-confirm true")
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self.debugger.HandleCommand("command script import lldb")
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interpreter = self.debugger.GetCommandInterpreter()
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continue_tests = True
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def keyboard_interrupt_handler(_sig, _frame):
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nonlocal continue_tests
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log("\nTest execution aborted by user.")
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continue_tests = False
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raise KeyboardInterrupt
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original_handler = signal.signal(
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signal.SIGINT, keyboard_interrupt_handler)
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try:
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while continue_tests:
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log("\n(lldb) ", end="")
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try:
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command = input().strip()
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except EOFError:
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log(
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"\nExiting LLDB interactive mode. Continuing with next test case.")
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break
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except KeyboardInterrupt:
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break
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if command.lower() == 'quit':
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log(
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"\nExiting LLDB interactive mode. Continuing with next test case.")
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break
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result = lldb.SBCommandReturnObject()
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interpreter.HandleCommand(command, result)
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log(result.GetOutput().rstrip(
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) if result.Succeeded() else result.GetError().rstrip())
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finally:
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signal.signal(signal.SIGINT, original_handler)
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sys.stdin, sys.stdout, sys.stderr = old_stdin, old_stdout, old_stderr
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return continue_tests
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def parse_expected_values(source_files):
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test_cases = []
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for source_file in source_files:
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with open(source_file, 'r', encoding='utf-8') as f:
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content = f.readlines()
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i = 0
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while i < len(content):
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line = content[i].strip()
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if line.startswith('// Expected:'):
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start_line = i + 1
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tests = []
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i += 1
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while i < len(content):
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line = content[i].strip()
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if not line.startswith('//'):
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break
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parts = line.lstrip('//').strip().split(':', 1)
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if len(parts) == 2:
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var, value = map(str.strip, parts)
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tests.append(Test(source_file, i + 1, var, value))
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i += 1
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end_line = i
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test_cases.append(
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TestCase(source_file, start_line, end_line, tests))
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else:
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i += 1
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return test_cases
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def execute_tests(executable_path, test_cases, verbose, interactive, plugin_path):
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results = TestResults()
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for test_case in test_cases:
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debugger = LLDBDebugger(executable_path, plugin_path)
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try:
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if verbose:
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log(f"Setting breakpoint at {
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test_case.source_file}:{test_case.end_line}")
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debugger.setup()
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debugger.set_breakpoint(
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test_case.source_file, test_case.end_line)
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debugger.run_to_breakpoint()
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all_variable_names = debugger.get_all_variable_names()
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case_result = execute_test_case(
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debugger, test_case, all_variable_names)
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results.total += len(case_result.results)
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results.passed += sum(1 for r in case_result.results if r.status == 'pass')
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results.failed += sum(1 for r in case_result.results if r.status != 'pass')
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results.case_results.append(case_result)
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case = case_result.test_case
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loc = f"{case.source_file}:{case.start_line}-{case.end_line}"
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log(f"\nTest case: {loc} in function '{case_result.function}'")
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for result in case_result.results:
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print_test_result(result, True)
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if interactive and any(r.status != 'pass' for r in case_result.results):
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log("\nTest case failed. Entering LLDB interactive mode.")
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continue_tests = debugger.run_console()
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if not continue_tests:
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log("Aborting all tests.")
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break
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finally:
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debugger.cleanup()
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return results
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def run_tests(executable_path, source_files, verbose, interactive, plugin_path):
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test_cases = parse_expected_values(source_files)
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if verbose:
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log(f"Running tests for {
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', '.join(source_files)} with {executable_path}")
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log(f"Found {len(test_cases)} test cases")
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results = execute_tests(executable_path, test_cases, verbose,
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interactive, plugin_path)
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if results.total != results.passed:
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os._exit(1)
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def execute_test_case(debugger, test_case, all_variable_names):
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results = []
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for test in test_case.tests:
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if test.variable == "all variables":
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result = execute_all_variables_test(test, all_variable_names)
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else:
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result = execute_single_variable_test(debugger, test)
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results.append(result)
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return CaseResult(test_case, debugger.get_current_function_name(), results)
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def execute_all_variables_test(test, all_variable_names):
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expected_vars = set(test.expected_value.split())
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if expected_vars == all_variable_names:
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return TestResult(
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test=test,
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status='pass',
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actual=all_variable_names
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)
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else:
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return TestResult(
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test=test,
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status='fail',
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actual=all_variable_names,
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missing=expected_vars - all_variable_names,
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extra=all_variable_names - expected_vars
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)
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def execute_single_variable_test(debugger, test):
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actual_value = debugger.get_variable_value(test.variable)
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if actual_value is None:
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return TestResult(
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test=test,
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status='error',
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message=f'Unable to fetch value for {test.variable}'
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)
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# 移除可能的空格，但保留括号
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actual_value = actual_value.strip()
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expected_value = test.expected_value.strip()
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# 比较处理后的值
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if actual_value == expected_value:
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return TestResult(
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test=test,
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status='pass',
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actual=actual_value
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)
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else:
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return TestResult(
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test=test,
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status='fail',
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actual=actual_value
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)
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def print_test_results(results: TestResults, verbose):
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for case_result in results.case_results:
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case = case_result.test_case
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loc = f"{case.source_file}:{case.start_line}-{case.end_line}"
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log(f"\nTest case: {loc} in function '{case_result.function}'")
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for result in case_result.results:
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print_test_result(result, verbose)
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log("\nTest results:")
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log(f" Total tests: {results.total}")
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log(f" Passed tests: {results.passed}")
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log(f" Failed tests: {results.failed}")
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if results.total == results.passed:
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log("All tests passed!")
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else:
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log("Some tests failed")
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def print_test_result(result: TestResult, verbose):
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status_symbol = "✓" if result.status == 'pass' else "✗"
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status_text = "Pass" if result.status == 'pass' else "Fail"
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test = result.test
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if result.status == 'pass':
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if verbose:
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log(
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f"{status_symbol} Line {test.line_number}, {test.variable}: {status_text}")
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if test.variable == 'all variables':
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log(f" Variables: {
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', '.join(sorted(result.actual))}")
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else: # fail or error
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log(
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f"{status_symbol} Line {test.line_number}, {test.variable}: {status_text}")
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if test.variable == 'all variables':
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if result.missing:
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log(
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f" Missing variables: {', '.join(sorted(result.missing))}")
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if result.extra:
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log(
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f" Extra variables: {', '.join(sorted(result.extra))}")
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log(
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f" Expected: {', '.join(sorted(test.expected_value.split()))}")
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log(f" Actual: {', '.join(sorted(result.actual))}")
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elif result.status == 'error':
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log(f" Error: {result.message}")
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else:
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log(f" Expected: {test.expected_value}")
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log(f" Actual: {result.actual}")
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def main():
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log(sys.argv)
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parser = argparse.ArgumentParser(
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description="LLDB 18 Debug Script with DWARF 5 Support")
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parser.add_argument("executable", help="Path to the executable")
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parser.add_argument("sources", nargs='+', help="Paths to the source files")
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parser.add_argument("-v", "--verbose", action="store_true",
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help="Enable verbose output")
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parser.add_argument("-i", "--interactive", action="store_true",
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help="Enable interactive mode on test failure")
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parser.add_argument("--plugin", help="Path to the LLDB plugin")
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args = parser.parse_args()
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|
||||
plugin_path = args.plugin or os.path.join(os.path.dirname(
|
||||
os.path.realpath(__file__)), "go_lldb_plugin.py")
|
||||
run_tests(args.executable, args.sources,
|
||||
args.verbose, args.interactive, plugin_path)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
||||
|
||||
def __lldb_init_module(debugger, _internal_dict):
|
||||
run_tests("cl/_testdata/debug/out",
|
||||
["cl/_testdata/debug/in.go"], True, False, None)
|
||||
debugger.HandleCommand('quit')
|
||||
Reference in New Issue
Block a user