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commit e69903c939690b4ce1101dc02ae1cbd9fed4ab32 Author: yinshengkai <[email protected]> AuthorDate: Wed Nov 13 12:33:28 2024 +0800 tools/gdb: Add a singleton class for macros Usage: macro = Macro("nuttx/nuttx") print(macro.CONFIG_MM_BACKTRACE) if macro.CONFIG_MM_BACKTRACE: print("mm backtrace is enabled") else: print("mm backtrace is disabled") Signed-off-by: yinshengkai <[email protected]> --- tools/gdb/nuttxgdb/macros.py | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/tools/gdb/nuttxgdb/macros.py b/tools/gdb/nuttxgdb/macros.py index c86e0205e8..bc07ec6761 100644 --- a/tools/gdb/nuttxgdb/macros.py +++ b/tools/gdb/nuttxgdb/macros.py @@ -222,3 +222,68 @@ def try_expand(expr, macro): res += do_expand(expr, macro) return "".join(res) + + +class Macro: + """ + This is a singleton class which only initializes once to + cache a context of macro definition which can be queried later + TODO: we only deal with single ELF at the moment for simplicity + If you load more object files while debugging, only the first one gets loaded + will be used to retrieve macro information + + Usage: + macro = Macro("nuttx/nuttx") + print(macro.CONFIG_MM_BACKTRACE) + if macro.CONFIG_MM_BACKTRACE: + print("mm backtrace is enabled") + else: + print("mm backtrace is disabled") + """ + + def __new__(cls, *args, **kwargs): + if not hasattr(cls, "instance"): + cls.instance = super(Macro, cls).__new__(cls) + return cls.instance + + def __init__(self, filename): + self._macro_map = {} + self._file = filename + self._macro_map = fetch_macro_info(filename) + + def is_defined(self, macro_name): + """ + Check if a macro is defined + """ + return macro_name in self._macro_map + + def get_value(self, macro_name, default=None): + """ + Get the value of a macro, return default if macro is not defined + """ + if not self.is_defined(macro_name): + return default + + value = self._macro_map[macro_name] + # Try to convert to numeric type + try: + # Handle hexadecimal + if isinstance(value, str) and value.startswith("0x"): + return int(value, 16) + # Handle integer + return int(value) + except (ValueError, TypeError): + # Return original value if conversion fails + return value + + def __getattr__(self, name): + """ + Allow using dot notation to access macros + """ + return self.get_value(name) + + def __call__(self, macro_name): + """ + Allow using function call syntax to get macro + """ + return self.get_value(macro_name)
