mirror of git://gcc.gnu.org/git/gcc.git
				
				
				
			
		
			
				
	
	
		
			622 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			Python
		
	
	
	
			
		
		
	
	
			622 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			Python
		
	
	
	
| # Xmethods for libstdc++.
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| 
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| # Copyright (C) 2014-2015 Free Software Foundation, Inc.
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| 
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| # This program is free software; you can redistribute it and/or modify
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| # it under the terms of the GNU General Public License as published by
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| # the Free Software Foundation; either version 3 of the License, or
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| # (at your option) any later version.
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| #
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| # This program is distributed in the hope that it will be useful,
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| # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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| # GNU General Public License for more details.
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| #
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| # You should have received a copy of the GNU General Public License
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| # along with this program.  If not, see <http://www.gnu.org/licenses/>.
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| 
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| import gdb
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| import gdb.xmethod
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| import re
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| 
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| matcher_name_prefix = 'libstdc++::'
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| 
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| def get_bool_type():
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|     return gdb.lookup_type('bool')
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| 
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| def get_std_size_type():
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|     return gdb.lookup_type('std::size_t')
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| 
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| class LibStdCxxXMethod(gdb.xmethod.XMethod):
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|     def __init__(self, name, worker_class):
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|         gdb.xmethod.XMethod.__init__(self, name)
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|         self.worker_class = worker_class
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| 
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| # Xmethods for std::array
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| 
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| class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
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|     def __init__(self, val_type, size):
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|         self._val_type = val_type
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|         self._size = size
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| 
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|     def null_value(self):
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|         nullptr = gdb.parse_and_eval('(void *) 0')
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|         return nullptr.cast(self._val_type.pointer()).dereference()
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| 
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| class ArraySizeWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_std_size_type()
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| 
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|     def __call__(self, obj):
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|         return self._size
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| 
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| class ArrayEmptyWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_bool_type()
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| 
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|     def __call__(self, obj):
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|         return (int(self._size) == 0)
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| 
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| class ArrayFrontWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         if int(self._size) > 0:
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|             return obj['_M_elems'][0]
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|         else:
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|             return self.null_value()
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| 
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| class ArrayBackWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         if int(self._size) > 0:
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|             return obj['_M_elems'][self._size - 1]
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|         else:
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|             return self.null_value()
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| 
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| class ArrayAtWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, index):
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|         return self._val_type
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| 
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|     def __call__(self, obj, index):
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|         if int(index) >= int(self._size):
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|             raise IndexError('Array index "%d" should not be >= %d.' %
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|                              ((int(index), self._size)))
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|         return obj['_M_elems'][index]
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| 
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| class ArraySubscriptWorker(ArrayWorkerBase):
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|     def __init__(self, val_type, size):
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|         ArrayWorkerBase.__init__(self, val_type, size)
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| 
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, index):
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|         return self._val_type
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| 
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|     def __call__(self, obj, index):
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|         if int(self._size) > 0:
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|             return obj['_M_elems'][index]
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|         else:
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|             return self.null_value()
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| 
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| class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
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|     def __init__(self):
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|         gdb.xmethod.XMethodMatcher.__init__(self,
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|                                             matcher_name_prefix + 'array')
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|         self._method_dict = {
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|             'size': LibStdCxxXMethod('size', ArraySizeWorker),
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|             'empty': LibStdCxxXMethod('empty', ArrayEmptyWorker),
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|             'front': LibStdCxxXMethod('front', ArrayFrontWorker),
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|             'back': LibStdCxxXMethod('back', ArrayBackWorker),
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|             'at': LibStdCxxXMethod('at', ArrayAtWorker),
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|             'operator[]': LibStdCxxXMethod('operator[]', ArraySubscriptWorker),
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|         }
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|         self.methods = [self._method_dict[m] for m in self._method_dict]
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| 
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|     def match(self, class_type, method_name):
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|         if not re.match('^std::array<.*>$', class_type.tag):
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|             return None
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|         method = self._method_dict.get(method_name)
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|         if method is None or not method.enabled:
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|             return None
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|         try:
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|             value_type = class_type.template_argument(0)
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|             size = class_type.template_argument(1)
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|         except:
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|             return None
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|         return method.worker_class(value_type, size)
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| 
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| # Xmethods for std::deque
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| 
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| class DequeWorkerBase(gdb.xmethod.XMethodWorker):
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|     def __init__(self, val_type):
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|         self._val_type = val_type
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|         self._bufsize = (512 / val_type.sizeof) or 1
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| 
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|     def size(self, obj):
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|         first_node = obj['_M_impl']['_M_start']['_M_node']
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|         last_node = obj['_M_impl']['_M_finish']['_M_node']
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|         cur = obj['_M_impl']['_M_finish']['_M_cur']
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|         first = obj['_M_impl']['_M_finish']['_M_first']
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|         return (last_node - first_node) * self._bufsize + (cur - first)
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| 
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|     def index(self, obj, index):
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|         first_node = obj['_M_impl']['_M_start']['_M_node']
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|         index_node = first_node + index / self._bufsize
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|         return index_node[0][index % self._bufsize]
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| 
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| class DequeEmptyWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_bool_type()
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| 
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|     def __call__(self, obj):
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|         return (obj['_M_impl']['_M_start']['_M_cur'] ==
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|                 obj['_M_impl']['_M_finish']['_M_cur'])
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| 
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| class DequeSizeWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_std_size_type()
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| 
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|     def __call__(self, obj):
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|         return self.size(obj)
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| 
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| class DequeFrontWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         return obj['_M_impl']['_M_start']['_M_cur'][0]
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| 
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| class DequeBackWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         if (obj['_M_impl']['_M_finish']['_M_cur'] ==
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|             obj['_M_impl']['_M_finish']['_M_first']):
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|             prev_node = obj['_M_impl']['_M_finish']['_M_node'] - 1
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|             return prev_node[0][self._bufsize - 1]
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|         else:
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|             return obj['_M_impl']['_M_finish']['_M_cur'][-1]
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| 
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| class DequeSubscriptWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, subscript):
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|         return self._val_type
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| 
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|     def __call__(self, obj, subscript):
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|         return self.index(obj, subscript)
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| 
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| class DequeAtWorker(DequeWorkerBase):
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, index):
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|         return self._val_type
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| 
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|     def __call__(self, obj, index):
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|         deque_size = int(self.size(obj))
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|         if int(index) >= deque_size:
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|             raise IndexError('Deque index "%d" should not be >= %d.' %
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|                              (int(index), deque_size))
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|         else:
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|            return self.index(obj, index)
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| 
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| class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
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|     def __init__(self):
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|         gdb.xmethod.XMethodMatcher.__init__(self,
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|                                             matcher_name_prefix + 'deque')
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|         self._method_dict = {
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|             'empty': LibStdCxxXMethod('empty', DequeEmptyWorker),
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|             'size': LibStdCxxXMethod('size', DequeSizeWorker),
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|             'front': LibStdCxxXMethod('front', DequeFrontWorker),
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|             'back': LibStdCxxXMethod('back', DequeBackWorker),
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|             'operator[]': LibStdCxxXMethod('operator[]', DequeSubscriptWorker),
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|             'at': LibStdCxxXMethod('at', DequeAtWorker)
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|         }
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|         self.methods = [self._method_dict[m] for m in self._method_dict]
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| 
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|     def match(self, class_type, method_name):
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|         if not re.match('^std::deque<.*>$', class_type.tag):
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|             return None
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|         method = self._method_dict.get(method_name)
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|         if method is None or not method.enabled:
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|             return None
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|         return method.worker_class(class_type.template_argument(0))
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| 
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| # Xmethods for std::forward_list
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| 
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| class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
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|     def __init__(self, val_type, node_type):
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|         self._val_type = val_type
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|         self._node_type = node_type
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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| class ForwardListEmptyWorker(ForwardListWorkerBase):
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|     def get_result_type(self, obj):
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|         return get_bool_type()
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| 
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|     def __call__(self, obj):
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|         return obj['_M_impl']['_M_head']['_M_next'] == 0
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| 
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| class ForwardListFrontWorker(ForwardListWorkerBase):
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         node = obj['_M_impl']['_M_head']['_M_next'].cast(self._node_type)
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|         val_address = node['_M_storage']['_M_storage'].address
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|         return val_address.cast(self._val_type.pointer()).dereference()
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| 
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| class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
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|     def __init__(self):
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|         matcher_name = matcher_name_prefix + 'forward_list'
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|         gdb.xmethod.XMethodMatcher.__init__(self, matcher_name)
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|         self._method_dict = {
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|             'empty': LibStdCxxXMethod('empty', ForwardListEmptyWorker),
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|             'front': LibStdCxxXMethod('front', ForwardListFrontWorker)
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|         }
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|         self.methods = [self._method_dict[m] for m in self._method_dict]
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| 
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|     def match(self, class_type, method_name):
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|         if not re.match('^std::forward_list<.*>$', class_type.tag):
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|             return None
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|         method = self._method_dict.get(method_name)
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|         if method is None or not method.enabled:
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|             return None
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|         val_type = class_type.template_argument(0)
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|         node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
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|         return method.worker_class(val_type, node_type)
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| 
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| # Xmethods for std::list
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| 
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| class ListWorkerBase(gdb.xmethod.XMethodWorker):
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|     def __init__(self, val_type, node_type):
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|         self._val_type = val_type
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|         self._node_type = node_type
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| 
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|     def get_arg_types(self):
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|         return None
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| 
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| class ListEmptyWorker(ListWorkerBase):
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|     def get_result_type(self, obj):
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|         return get_bool_type()
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| 
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|     def __call__(self, obj):
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|         base_node = obj['_M_impl']['_M_node']
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|         if base_node['_M_next'] == base_node.address:
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|             return True
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|         else:
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|             return False
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| 
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| class ListSizeWorker(ListWorkerBase):
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|     def get_result_type(self, obj):
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|         return get_std_size_type()
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| 
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|     def __call__(self, obj):
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|         begin_node = obj['_M_impl']['_M_node']['_M_next']
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|         end_node = obj['_M_impl']['_M_node'].address
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|         size = 0
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|         while begin_node != end_node:
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|             begin_node = begin_node['_M_next']
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|             size += 1
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|         return size
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| 
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| class ListFrontWorker(ListWorkerBase):
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         node = obj['_M_impl']['_M_node']['_M_next'].cast(self._node_type)
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|         return node['_M_data']
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| 
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| class ListBackWorker(ListWorkerBase):
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         prev_node = obj['_M_impl']['_M_node']['_M_prev'].cast(self._node_type)
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|         return prev_node['_M_data']
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| 
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| class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
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|     def __init__(self):
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|         gdb.xmethod.XMethodMatcher.__init__(self,
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|                                             matcher_name_prefix + 'list')
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|         self._method_dict = {
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|             'empty': LibStdCxxXMethod('empty', ListEmptyWorker),
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|             'size': LibStdCxxXMethod('size', ListSizeWorker),
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|             'front': LibStdCxxXMethod('front', ListFrontWorker),
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|             'back': LibStdCxxXMethod('back', ListBackWorker)
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|         }
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|         self.methods = [self._method_dict[m] for m in self._method_dict]
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| 
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|     def match(self, class_type, method_name):
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|         if not re.match('^std::list<.*>$', class_type.tag):
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|             return None
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|         method = self._method_dict.get(method_name)
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|         if method is None or not method.enabled:
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|             return None
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|         val_type = class_type.template_argument(0)
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|         node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
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|         return method.worker_class(val_type, node_type)
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| 
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| # Xmethods for std::vector
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| 
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| class VectorWorkerBase(gdb.xmethod.XMethodWorker):
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|     def __init__(self, val_type):
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|         self._val_type = val_type
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| 
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|     def size(self, obj):
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|         if self._val_type.code == gdb.TYPE_CODE_BOOL:
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|             start = obj['_M_impl']['_M_start']['_M_p']
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|             finish = obj['_M_impl']['_M_finish']['_M_p']
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|             finish_offset = obj['_M_impl']['_M_finish']['_M_offset']
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|             bit_size = start.dereference().type.sizeof * 8
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|             return (finish - start) * bit_size + finish_offset
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|         else:
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|             return obj['_M_impl']['_M_finish'] - obj['_M_impl']['_M_start']
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| 
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|     def get(self, obj, index):
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|         if self._val_type.code == gdb.TYPE_CODE_BOOL:
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|             start = obj['_M_impl']['_M_start']['_M_p']
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|             bit_size = start.dereference().type.sizeof * 8
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|             valp = start + index / bit_size
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|             offset = index % bit_size
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|             return (valp.dereference() & (1 << offset)) > 0
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|         else:
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|             return obj['_M_impl']['_M_start'][index]
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| 
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| class VectorEmptyWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_bool_type()
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| 
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|     def __call__(self, obj):
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|         return int(self.size(obj)) == 0
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| 
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| class VectorSizeWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return get_std_size_type()
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| 
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|     def __call__(self, obj):
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|         return self.size(obj)
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| 
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| class VectorFrontWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         return self.get(obj, 0)
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| 
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| class VectorBackWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return None
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| 
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|     def get_result_type(self, obj):
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|         return self._val_type
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| 
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|     def __call__(self, obj):
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|         return self.get(obj, int(self.size(obj)) - 1)
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| 
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| class VectorAtWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, index):
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|         return self._val_type
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| 
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|     def __call__(self, obj, index):
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|         size = int(self.size(obj))
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|         if int(index) >= size:
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|             raise IndexError('Vector index "%d" should not be >= %d.' %
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|                              ((int(index), size)))
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|         return self.get(obj, int(index))
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| 
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| class VectorSubscriptWorker(VectorWorkerBase):
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|     def get_arg_types(self):
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|         return get_std_size_type()
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| 
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|     def get_result_type(self, obj, subscript):
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|         return self._val_type
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| 
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|     def __call__(self, obj, subscript):
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|         return self.get(obj, int(subscript))
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| 
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| class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
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|     def __init__(self):
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|         gdb.xmethod.XMethodMatcher.__init__(self,
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|                                             matcher_name_prefix + 'vector')
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|         self._method_dict = {
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|             'size': LibStdCxxXMethod('size', VectorSizeWorker),
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|             'empty': LibStdCxxXMethod('empty', VectorEmptyWorker),
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|             'front': LibStdCxxXMethod('front', VectorFrontWorker),
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|             'back': LibStdCxxXMethod('back', VectorBackWorker),
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|             'at': LibStdCxxXMethod('at', VectorAtWorker),
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|             'operator[]': LibStdCxxXMethod('operator[]',
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|                                            VectorSubscriptWorker),
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|         }
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|         self.methods = [self._method_dict[m] for m in self._method_dict]
 | ||
| 
 | ||
|     def match(self, class_type, method_name):
 | ||
|         if not re.match('^std::vector<.*>$', class_type.tag):
 | ||
|             return None
 | ||
|         method = self._method_dict.get(method_name)
 | ||
|         if method is None or not method.enabled:
 | ||
|             return None
 | ||
|         return method.worker_class(class_type.template_argument(0))
 | ||
| 
 | ||
| # Xmethods for associative containers
 | ||
| 
 | ||
| class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
 | ||
|     def __init__(self, unordered):
 | ||
|         self._unordered = unordered
 | ||
| 
 | ||
|     def node_count(self, obj):
 | ||
|         if self._unordered:
 | ||
|             return obj['_M_h']['_M_element_count']
 | ||
|         else:
 | ||
|             return obj['_M_t']['_M_impl']['_M_node_count']
 | ||
| 
 | ||
|     def get_arg_types(self):
 | ||
|         return None
 | ||
| 
 | ||
| class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
 | ||
|     def get_result_type(self, obj):
 | ||
|         return get_bool_type()
 | ||
| 
 | ||
|     def __call__(self, obj):
 | ||
|         return int(self.node_count(obj)) == 0
 | ||
| 
 | ||
| class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
 | ||
|     def get_result_type(self, obj):
 | ||
|         return get_std_size_type()
 | ||
| 
 | ||
|     def __call__(self, obj):
 | ||
|         return self.node_count(obj)
 | ||
| 
 | ||
| class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
 | ||
|     def __init__(self, name):
 | ||
|         gdb.xmethod.XMethodMatcher.__init__(self,
 | ||
|                                             matcher_name_prefix + name)
 | ||
|         self._name = name
 | ||
|         self._method_dict = {
 | ||
|             'size': LibStdCxxXMethod('size', AssociativeContainerSizeWorker),
 | ||
|             'empty': LibStdCxxXMethod('empty',
 | ||
|                                       AssociativeContainerEmptyWorker),
 | ||
|         }
 | ||
|         self.methods = [self._method_dict[m] for m in self._method_dict]
 | ||
| 
 | ||
|     def match(self, class_type, method_name):
 | ||
|         if not re.match('^std::%s<.*>$' % self._name, class_type.tag):
 | ||
|             return None
 | ||
|         method = self._method_dict.get(method_name)
 | ||
|         if method is None or not method.enabled:
 | ||
|             return None
 | ||
|         unordered = 'unordered' in self._name
 | ||
|         return method.worker_class(unordered)
 | ||
| 
 | ||
| # Xmethods for std::unique_ptr
 | ||
| 
 | ||
| class UniquePtrGetWorker(gdb.xmethod.XMethodWorker):
 | ||
|     def __init__(self, elem_type):
 | ||
|         self._elem_type = elem_type
 | ||
| 
 | ||
|     def get_arg_types(self):
 | ||
|         return None
 | ||
| 
 | ||
|     def get_result_type(self, obj):
 | ||
|         return self._elem_type.pointer()
 | ||
| 
 | ||
|     def __call__(self, obj):
 | ||
|         return obj['_M_t']['_M_head_impl']
 | ||
| 
 | ||
| class UniquePtrDerefWorker(UniquePtrGetWorker):
 | ||
|     def __init__(self, elem_type):
 | ||
|         UniquePtrGetWorker.__init__(self, elem_type)
 | ||
| 
 | ||
|     def get_result_type(self, obj):
 | ||
|         return self._elem_type
 | ||
| 
 | ||
|     def __call__(self, obj):
 | ||
|         return UniquePtrGetWorker.__call__(self, obj).dereference()
 | ||
| 
 | ||
| class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
 | ||
|     def __init__(self):
 | ||
|         gdb.xmethod.XMethodMatcher.__init__(self,
 | ||
|                                             matcher_name_prefix + 'unique_ptr')
 | ||
|         self._method_dict = {
 | ||
|             'get': LibStdCxxXMethod('get', UniquePtrGetWorker),
 | ||
|             'operator*': LibStdCxxXMethod('operator*', UniquePtrDerefWorker),
 | ||
|         }
 | ||
|         self.methods = [self._method_dict[m] for m in self._method_dict]
 | ||
| 
 | ||
|     def match(self, class_type, method_name):
 | ||
|         if not re.match('^std::unique_ptr<.*>$', class_type.tag):
 | ||
|             return None
 | ||
|         method = self._method_dict.get(method_name)
 | ||
|         if method is None or not method.enabled:
 | ||
|             return None
 | ||
|         return method.worker_class(class_type.template_argument(0))
 | ||
| 
 | ||
| def register_libstdcxx_xmethods(locus):
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, ArrayMethodsMatcher())
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, ForwardListMethodsMatcher())
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, DequeMethodsMatcher())
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, ListMethodsMatcher())
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, VectorMethodsMatcher())
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('set'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('map'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('multiset'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('multimap'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('unordered_set'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('unordered_map'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('unordered_multiset'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(
 | ||
|         locus, AssociativeContainerMethodsMatcher('unordered_multimap'))
 | ||
|     gdb.xmethod.register_xmethod_matcher(locus, UniquePtrMethodsMatcher())
 |