diff options
Diffstat (limited to 'share/gdb/python/gdb/command')
-rw-r--r-- | share/gdb/python/gdb/command/__init__.py | 2 | ||||
-rw-r--r-- | share/gdb/python/gdb/command/explore.py | 760 | ||||
-rw-r--r-- | share/gdb/python/gdb/command/pretty_printers.py | 26 | ||||
-rw-r--r-- | share/gdb/python/gdb/command/prompt.py | 66 | ||||
-rw-r--r-- | share/gdb/python/gdb/command/type_printers.py | 125 |
5 files changed, 964 insertions, 15 deletions
diff --git a/share/gdb/python/gdb/command/__init__.py b/share/gdb/python/gdb/command/__init__.py index ee2b61f..21eaef8 100644 --- a/share/gdb/python/gdb/command/__init__.py +++ b/share/gdb/python/gdb/command/__init__.py @@ -1,4 +1,4 @@ -# Copyright (C) 2010, 2011 Free Software Foundation, Inc. +# Copyright (C) 2010-2013 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by diff --git a/share/gdb/python/gdb/command/explore.py b/share/gdb/python/gdb/command/explore.py new file mode 100644 index 0000000..dd77875 --- /dev/null +++ b/share/gdb/python/gdb/command/explore.py @@ -0,0 +1,760 @@ +# GDB 'explore' command. +# Copyright (C) 2012-2013 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +"""Implementation of the GDB 'explore' command using the GDB Python API.""" + +import gdb +import sys + +if sys.version_info[0] > 2: + # Python 3 renamed raw_input to input + raw_input = input + +class Explorer(object): + """Internal class which invokes other explorers.""" + + # This map is filled by the Explorer.init_env() function + type_code_to_explorer_map = { } + + _SCALAR_TYPE_LIST = ( + gdb.TYPE_CODE_CHAR, + gdb.TYPE_CODE_INT, + gdb.TYPE_CODE_BOOL, + gdb.TYPE_CODE_FLT, + gdb.TYPE_CODE_VOID, + gdb.TYPE_CODE_ENUM, + ) + + @staticmethod + def guard_expr(expr): + length = len(expr) + guard = False + + if expr[0] == '(' and expr[length-1] == ')': + pass + else: + i = 0 + while i < length: + c = expr[i] + if (c == '_' or ('a' <= c and c <= 'z') or + ('A' <= c and c <= 'Z') or ('0' <= c and c <= '9')): + pass + else: + guard = True + break + i += 1 + + if guard: + return "(" + expr + ")" + else: + return expr + + @staticmethod + def explore_expr(expr, value, is_child): + """Main function to explore an expression value. + + Arguments: + expr: The expression string that is being explored. + value: The gdb.Value value of the expression. + is_child: Boolean value to indicate if the expression is a child. + An expression is a child if it is derived from the main + expression entered by the user. For example, if the user + entered an expression which evaluates to a struct, then + when exploring the fields of the struct, is_child is set + to True internally. + + Returns: + No return value. + """ + type_code = value.type.code + if type_code in Explorer.type_code_to_explorer_map: + explorer_class = Explorer.type_code_to_explorer_map[type_code] + while explorer_class.explore_expr(expr, value, is_child): + pass + else: + print ("Explorer for type '%s' not yet available.\n" % + str(value.type)) + + @staticmethod + def explore_type(name, datatype, is_child): + """Main function to explore a data type. + + Arguments: + name: The string representing the path to the data type being + explored. + datatype: The gdb.Type value of the data type being explored. + is_child: Boolean value to indicate if the name is a child. + A name is a child if it is derived from the main name + entered by the user. For example, if the user entered + the name of struct type, then when exploring the fields + of the struct, is_child is set to True internally. + + Returns: + No return value. + """ + type_code = datatype.code + if type_code in Explorer.type_code_to_explorer_map: + explorer_class = Explorer.type_code_to_explorer_map[type_code] + while explorer_class.explore_type(name, datatype, is_child): + pass + else: + print ("Explorer for type '%s' not yet available.\n" % + str(datatype)) + + @staticmethod + def init_env(): + """Initializes the Explorer environment. + This function should be invoked before starting any exploration. If + invoked before an exploration, it need not be invoked for subsequent + explorations. + """ + Explorer.type_code_to_explorer_map = { + gdb.TYPE_CODE_CHAR : ScalarExplorer, + gdb.TYPE_CODE_INT : ScalarExplorer, + gdb.TYPE_CODE_BOOL : ScalarExplorer, + gdb.TYPE_CODE_FLT : ScalarExplorer, + gdb.TYPE_CODE_VOID : ScalarExplorer, + gdb.TYPE_CODE_ENUM : ScalarExplorer, + gdb.TYPE_CODE_STRUCT : CompoundExplorer, + gdb.TYPE_CODE_UNION : CompoundExplorer, + gdb.TYPE_CODE_PTR : PointerExplorer, + gdb.TYPE_CODE_REF : ReferenceExplorer, + gdb.TYPE_CODE_TYPEDEF : TypedefExplorer, + gdb.TYPE_CODE_ARRAY : ArrayExplorer + } + + @staticmethod + def is_scalar_type(type): + """Checks whether a type is a scalar type. + A type is a scalar type of its type is + gdb.TYPE_CODE_CHAR or + gdb.TYPE_CODE_INT or + gdb.TYPE_CODE_BOOL or + gdb.TYPE_CODE_FLT or + gdb.TYPE_CODE_VOID or + gdb.TYPE_CODE_ENUM. + + Arguments: + type: The type to be checked. + + Returns: + 'True' if 'type' is a scalar type. 'False' otherwise. + """ + return type.code in Explorer._SCALAR_TYPE_LIST + + @staticmethod + def return_to_parent_value(): + """A utility function which prints that the current exploration session + is returning to the parent value. Useful when exploring values. + """ + print ("\nReturning to parent value...\n") + + @staticmethod + def return_to_parent_value_prompt(): + """A utility function which prompts the user to press the 'enter' key + so that the exploration session can shift back to the parent value. + Useful when exploring values. + """ + raw_input("\nPress enter to return to parent value: ") + + @staticmethod + def return_to_enclosing_type(): + """A utility function which prints that the current exploration session + is returning to the enclosing type. Useful when exploring types. + """ + print ("\nReturning to enclosing type...\n") + + @staticmethod + def return_to_enclosing_type_prompt(): + """A utility function which prompts the user to press the 'enter' key + so that the exploration session can shift back to the enclosing type. + Useful when exploring types. + """ + raw_input("\nPress enter to return to enclosing type: ") + + +class ScalarExplorer(object): + """Internal class used to explore scalar values.""" + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore scalar values. + See Explorer.explore_expr and Explorer.is_scalar_type for more + information. + """ + print ("'%s' is a scalar value of type '%s'." % + (expr, value.type)) + print ("%s = %s" % (expr, str(value))) + + if is_child: + Explorer.return_to_parent_value_prompt() + Explorer.return_to_parent_value() + + return False + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore scalar types. + See Explorer.explore_type and Explorer.is_scalar_type for more + information. + """ + if datatype.code == gdb.TYPE_CODE_ENUM: + if is_child: + print ("%s is of an enumerated type '%s'." % + (name, str(datatype))) + else: + print ("'%s' is an enumerated type." % name) + else: + if is_child: + print ("%s is of a scalar type '%s'." % + (name, str(datatype))) + else: + print ("'%s' is a scalar type." % name) + + if is_child: + Explorer.return_to_enclosing_type_prompt() + Explorer.return_to_enclosing_type() + + return False + + +class PointerExplorer(object): + """Internal class used to explore pointer values.""" + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore pointer values. + See Explorer.explore_expr for more information. + """ + print ("'%s' is a pointer to a value of type '%s'" % + (expr, str(value.type.target()))) + option = raw_input("Continue exploring it as a pointer to a single " + "value [y/n]: ") + if option == "y": + deref_value = None + try: + deref_value = value.dereference() + str(deref_value) + except gdb.MemoryError: + print ("'%s' a pointer pointing to an invalid memory " + "location." % expr) + if is_child: + Explorer.return_to_parent_value_prompt() + return False + Explorer.explore_expr("*%s" % Explorer.guard_expr(expr), + deref_value, is_child) + return False + + option = raw_input("Continue exploring it as a pointer to an " + "array [y/n]: ") + if option == "y": + while True: + index = 0 + try: + index = int(raw_input("Enter the index of the element you " + "want to explore in '%s': " % expr)) + except ValueError: + break + element_expr = "%s[%d]" % (Explorer.guard_expr(expr), index) + element = value[index] + try: + str(element) + except gdb.MemoryError: + print ("Cannot read value at index %d." % index) + continue + Explorer.explore_expr(element_expr, element, True) + return False + + if is_child: + Explorer.return_to_parent_value() + return False + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore pointer types. + See Explorer.explore_type for more information. + """ + target_type = datatype.target() + print ("\n%s is a pointer to a value of type '%s'." % + (name, str(target_type))) + + Explorer.explore_type("the pointee type of %s" % name, + target_type, + is_child) + return False + + +class ReferenceExplorer(object): + """Internal class used to explore reference (TYPE_CODE_REF) values.""" + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore array values. + See Explorer.explore_expr for more information. + """ + referenced_value = value.referenced_value() + Explorer.explore_expr(expr, referenced_value, is_child) + return False + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore pointer types. + See Explorer.explore_type for more information. + """ + target_type = datatype.target() + Explorer.explore_type(name, target_type, is_child) + return False + + +class ArrayExplorer(object): + """Internal class used to explore arrays.""" + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore array values. + See Explorer.explore_expr for more information. + """ + target_type = value.type.target() + print ("'%s' is an array of '%s'." % (expr, str(target_type))) + index = 0 + try: + index = int(raw_input("Enter the index of the element you want to " + "explore in '%s': " % expr)) + except ValueError: + if is_child: + Explorer.return_to_parent_value() + return False + + element = None + try: + element = value[index] + str(element) + except gdb.MemoryError: + print ("Cannot read value at index %d." % index) + raw_input("Press enter to continue... ") + return True + + Explorer.explore_expr("%s[%d]" % (Explorer.guard_expr(expr), index), + element, True) + return True + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore array types. + See Explorer.explore_type for more information. + """ + target_type = datatype.target() + print ("%s is an array of '%s'." % (name, str(target_type))) + + Explorer.explore_type("the array element of %s" % name, target_type, + is_child) + return False + + +class CompoundExplorer(object): + """Internal class used to explore struct, classes and unions.""" + + @staticmethod + def _print_fields(print_list): + """Internal function which prints the fields of a struct/class/union. + """ + max_field_name_length = 0 + for pair in print_list: + if max_field_name_length < len(pair[0]): + max_field_name_length = len(pair[0]) + + for pair in print_list: + print (" %*s = %s" % (max_field_name_length, pair[0], pair[1])) + + @staticmethod + def _get_real_field_count(fields): + real_field_count = 0; + for field in fields: + if not field.artificial: + real_field_count = real_field_count + 1 + + return real_field_count + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore structs/classes and union values. + See Explorer.explore_expr for more information. + """ + datatype = value.type + type_code = datatype.code + fields = datatype.fields() + + if type_code == gdb.TYPE_CODE_STRUCT: + type_desc = "struct/class" + else: + type_desc = "union" + + if CompoundExplorer._get_real_field_count(fields) == 0: + print ("The value of '%s' is a %s of type '%s' with no fields." % + (expr, type_desc, str(value.type))) + if is_child: + Explorer.return_to_parent_value_prompt() + return False + + print ("The value of '%s' is a %s of type '%s' with the following " + "fields:\n" % (expr, type_desc, str(value.type))) + + has_explorable_fields = False + choice_to_compound_field_map = { } + current_choice = 0 + print_list = [ ] + for field in fields: + if field.artificial: + continue + field_full_name = Explorer.guard_expr(expr) + "." + field.name + if field.is_base_class: + field_value = value.cast(field.type) + else: + field_value = value[field.name] + literal_value = "" + if type_code == gdb.TYPE_CODE_UNION: + literal_value = ("<Enter %d to explore this field of type " + "'%s'>" % (current_choice, str(field.type))) + has_explorable_fields = True + else: + if Explorer.is_scalar_type(field.type): + literal_value = ("%s .. (Value of type '%s')" % + (str(field_value), str(field.type))) + else: + if field.is_base_class: + field_desc = "base class" + else: + field_desc = "field" + literal_value = ("<Enter %d to explore this %s of type " + "'%s'>" % + (current_choice, field_desc, + str(field.type))) + has_explorable_fields = True + + choice_to_compound_field_map[str(current_choice)] = ( + field_full_name, field_value) + current_choice = current_choice + 1 + + print_list.append((field.name, literal_value)) + + CompoundExplorer._print_fields(print_list) + print ("") + + if has_explorable_fields: + choice = raw_input("Enter the field number of choice: ") + if choice in choice_to_compound_field_map: + Explorer.explore_expr(choice_to_compound_field_map[choice][0], + choice_to_compound_field_map[choice][1], + True) + return True + else: + if is_child: + Explorer.return_to_parent_value() + else: + if is_child: + Explorer.return_to_parent_value_prompt() + + return False + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore struct/class and union types. + See Explorer.explore_type for more information. + """ + type_code = datatype.code + type_desc = "" + if type_code == gdb.TYPE_CODE_STRUCT: + type_desc = "struct/class" + else: + type_desc = "union" + + fields = datatype.fields() + if CompoundExplorer._get_real_field_count(fields) == 0: + if is_child: + print ("%s is a %s of type '%s' with no fields." % + (name, type_desc, str(datatype))) + Explorer.return_to_enclosing_type_prompt() + else: + print ("'%s' is a %s with no fields." % (name, type_desc)) + return False + + if is_child: + print ("%s is a %s of type '%s' " + "with the following fields:\n" % + (name, type_desc, str(datatype))) + else: + print ("'%s' is a %s with the following " + "fields:\n" % + (name, type_desc)) + + has_explorable_fields = False + current_choice = 0 + choice_to_compound_field_map = { } + print_list = [ ] + for field in fields: + if field.artificial: + continue + if field.is_base_class: + field_desc = "base class" + else: + field_desc = "field" + rhs = ("<Enter %d to explore this %s of type '%s'>" % + (current_choice, field_desc, str(field.type))) + print_list.append((field.name, rhs)) + choice_to_compound_field_map[str(current_choice)] = ( + field.name, field.type, field_desc) + current_choice = current_choice + 1 + + CompoundExplorer._print_fields(print_list) + print ("") + + if len(choice_to_compound_field_map) > 0: + choice = raw_input("Enter the field number of choice: ") + if choice in choice_to_compound_field_map: + if is_child: + new_name = ("%s '%s' of %s" % + (choice_to_compound_field_map[choice][2], + choice_to_compound_field_map[choice][0], + name)) + else: + new_name = ("%s '%s' of '%s'" % + (choice_to_compound_field_map[choice][2], + choice_to_compound_field_map[choice][0], + name)) + Explorer.explore_type(new_name, + choice_to_compound_field_map[choice][1], True) + return True + else: + if is_child: + Explorer.return_to_enclosing_type() + else: + if is_child: + Explorer.return_to_enclosing_type_prompt() + + return False + + +class TypedefExplorer(object): + """Internal class used to explore values whose type is a typedef.""" + + @staticmethod + def explore_expr(expr, value, is_child): + """Function to explore typedef values. + See Explorer.explore_expr for more information. + """ + actual_type = value.type.strip_typedefs() + print ("The value of '%s' is of type '%s' " + "which is a typedef of type '%s'" % + (expr, str(value.type), str(actual_type))) + + Explorer.explore_expr(expr, value.cast(actual_type), is_child) + return False + + @staticmethod + def explore_type(name, datatype, is_child): + """Function to explore typedef types. + See Explorer.explore_type for more information. + """ + actual_type = datatype.strip_typedefs() + if is_child: + print ("The type of %s is a typedef of type '%s'." % + (name, str(actual_type))) + else: + print ("The type '%s' is a typedef of type '%s'." % + (name, str(actual_type))) + + Explorer.explore_type(name, actual_type, is_child) + return False + + +class ExploreUtils(object): + """Internal class which provides utilities for the main command classes.""" + + @staticmethod + def check_args(name, arg_str): + """Utility to check if adequate number of arguments are passed to an + explore command. + + Arguments: + name: The name of the explore command. + arg_str: The argument string passed to the explore command. + + Returns: + True if adequate arguments are passed, false otherwise. + + Raises: + gdb.GdbError if adequate arguments are not passed. + """ + if len(arg_str) < 1: + raise gdb.GdbError("ERROR: '%s' requires an argument." + % name) + return False + else: + return True + + @staticmethod + def get_type_from_str(type_str): + """A utility function to deduce the gdb.Type value from a string + representing the type. + + Arguments: + type_str: The type string from which the gdb.Type value should be + deduced. + + Returns: + The deduced gdb.Type value if possible, None otherwise. + """ + try: + # Assume the current language to be C/C++ and make a try. + return gdb.parse_and_eval("(%s *)0" % type_str).type.target() + except RuntimeError: + # If assumption of current language to be C/C++ was wrong, then + # lookup the type using the API. + try: + return gdb.lookup_type(type_str) + except RuntimeError: + return None + + @staticmethod + def get_value_from_str(value_str): + """A utility function to deduce the gdb.Value value from a string + representing the value. + + Arguments: + value_str: The value string from which the gdb.Value value should + be deduced. + + Returns: + The deduced gdb.Value value if possible, None otherwise. + """ + try: + return gdb.parse_and_eval(value_str) + except RuntimeError: + return None + + +class ExploreCommand(gdb.Command): + """Explore a value or a type valid in the current context. + + Usage: + + explore ARG + + - ARG is either a valid expression or a type name. + - At any stage of exploration, hit the return key (instead of a + choice, if any) to return to the enclosing type or value. + """ + + def __init__(self): + super(ExploreCommand, self).__init__(name = "explore", + command_class = gdb.COMMAND_DATA, + prefix = True) + + def invoke(self, arg_str, from_tty): + if ExploreUtils.check_args("explore", arg_str) == False: + return + + # Check if it is a value + value = ExploreUtils.get_value_from_str(arg_str) + if value is not None: + Explorer.explore_expr(arg_str, value, False) + return + + # If it is not a value, check if it is a type + datatype = ExploreUtils.get_type_from_str(arg_str) + if datatype is not None: + Explorer.explore_type(arg_str, datatype, False) + return + + # If it is neither a value nor a type, raise an error. + raise gdb.GdbError( + ("'%s' neither evaluates to a value nor is a type " + "in the current context." % + arg_str)) + + +class ExploreValueCommand(gdb.Command): + """Explore value of an expression valid in the current context. + + Usage: + + explore value ARG + + - ARG is a valid expression. + - At any stage of exploration, hit the return key (instead of a + choice, if any) to return to the enclosing value. + """ + + def __init__(self): + super(ExploreValueCommand, self).__init__( + name = "explore value", command_class = gdb.COMMAND_DATA) + + def invoke(self, arg_str, from_tty): + if ExploreUtils.check_args("explore value", arg_str) == False: + return + + value = ExploreUtils.get_value_from_str(arg_str) + if value is None: + raise gdb.GdbError( + (" '%s' does not evaluate to a value in the current " + "context." % + arg_str)) + return + + Explorer.explore_expr(arg_str, value, False) + + +class ExploreTypeCommand(gdb.Command): + """Explore a type or the type of an expression valid in the current + context. + + Usage: + + explore type ARG + + - ARG is a valid expression or a type name. + - At any stage of exploration, hit the return key (instead of a + choice, if any) to return to the enclosing type. + """ + + def __init__(self): + super(ExploreTypeCommand, self).__init__( + name = "explore type", command_class = gdb.COMMAND_DATA) + + def invoke(self, arg_str, from_tty): + if ExploreUtils.check_args("explore type", arg_str) == False: + return + + datatype = ExploreUtils.get_type_from_str(arg_str) + if datatype is not None: + Explorer.explore_type(arg_str, datatype, False) + return + + value = ExploreUtils.get_value_from_str(arg_str) + if value is not None: + print ("'%s' is of type '%s'." % (arg_str, str(value.type))) + Explorer.explore_type(str(value.type), value.type, False) + return + + raise gdb.GdbError(("'%s' is not a type or value in the current " + "context." % arg_str)) + + +Explorer.init_env() + +ExploreCommand() +ExploreValueCommand() +ExploreTypeCommand() diff --git a/share/gdb/python/gdb/command/pretty_printers.py b/share/gdb/python/gdb/command/pretty_printers.py index 86923d7..7b03e3a 100644 --- a/share/gdb/python/gdb/command/pretty_printers.py +++ b/share/gdb/python/gdb/command/pretty_printers.py @@ -1,5 +1,5 @@ # Pretty-printer commands. -# Copyright (C) 2010, 2011 Free Software Foundation, Inc. +# Copyright (C) 2010-2013 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -124,21 +124,17 @@ class InfoPrettyPrinter(gdb.Command): """Print a list of pretty-printers.""" # A potential enhancement is to provide an option to list printers in # "lookup order" (i.e. unsorted). - sorted_pretty_printers = copy.copy(pretty_printers) - sorted_pretty_printers.sort(lambda x, y: - cmp(self.printer_name(x), - self.printer_name(y))) + sorted_pretty_printers = sorted (copy.copy(pretty_printers), + key = self.printer_name) for printer in sorted_pretty_printers: name = self.printer_name(printer) enabled = self.enabled_string(printer) if name_re.match(name): - print " %s%s" % (name, enabled) + print (" %s%s" % (name, enabled)) if (hasattr(printer, "subprinters") and printer.subprinters is not None): - sorted_subprinters = copy.copy(printer.subprinters) - sorted_subprinters.sort(lambda x, y: - cmp(self.printer_name(x), - self.printer_name(y))) + sorted_subprinters = sorted (copy.copy(printer.subprinters), + key = self.printer_name) for subprinter in sorted_subprinters: if (not subname_re or subname_re.match(subprinter.name)): @@ -148,9 +144,9 @@ class InfoPrettyPrinter(gdb.Command): def invoke1(self, title, printer_list, obj_name_to_match, object_re, name_re, subname_re): - """"Subroutine of invoke to simplify it.""" + """Subroutine of invoke to simplify it.""" if printer_list and object_re.match(obj_name_to_match): - print title + print (title) self.list_pretty_printers(printer_list, name_re, subname_re) def invoke(self, arg, from_tty): @@ -219,7 +215,7 @@ def show_pretty_printer_enabled_summary(): We count subprinters individually. """ (enabled_count, total_count) = count_all_enabled_printers() - print "%d of %d printers enabled" % (enabled_count, total_count) + print ("%d of %d printers enabled" % (enabled_count, total_count)) def do_enable_pretty_printer_1 (pretty_printers, name_re, subname_re, flag): @@ -301,7 +297,7 @@ def do_enable_pretty_printer (arg, flag): state = "enabled" else: state = "disabled" - print "%d %s %s" % (total, pluralize("printer", total), state) + print ("%d %s %s" % (total, pluralize("printer", total), state)) # Print the total list of printers currently enabled/disabled. # This is to further assist the user in determining whether the result @@ -368,3 +364,5 @@ def register_pretty_printer_commands(): InfoPrettyPrinter() EnablePrettyPrinter() DisablePrettyPrinter() + +register_pretty_printer_commands() diff --git a/share/gdb/python/gdb/command/prompt.py b/share/gdb/python/gdb/command/prompt.py new file mode 100644 index 0000000..394e40c --- /dev/null +++ b/share/gdb/python/gdb/command/prompt.py @@ -0,0 +1,66 @@ +# Extended prompt. +# Copyright (C) 2011-2013 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +"""GDB command for working with extended prompts.""" + +import gdb +import gdb.prompt + +class _ExtendedPrompt(gdb.Parameter): + + """Set the extended prompt. + +Usage: set extended-prompt VALUE + +Substitutions are applied to VALUE to compute the real prompt. + +The currently defined substitutions are: + +""" + # Add the prompt library's dynamically generated help to the + # __doc__ string. + __doc__ = __doc__ + gdb.prompt.prompt_help() + + set_doc = "Set the extended prompt." + show_doc = "Show the extended prompt." + + def __init__(self): + super(_ExtendedPrompt, self).__init__("extended-prompt", + gdb.COMMAND_SUPPORT, + gdb.PARAM_STRING_NOESCAPE) + self.value = '' + self.hook_set = False + + def get_show_string (self, pvalue): + if self.value is not '': + return "The extended prompt is: " + self.value + else: + return "The extended prompt is not set." + + def get_set_string (self): + if self.hook_set == False: + gdb.prompt_hook = self.before_prompt_hook + self.hook_set = True + return "" + + def before_prompt_hook(self, current): + if self.value is not '': + newprompt = gdb.prompt.substitute_prompt(self.value) + return newprompt.replace('\\', '\\\\') + else: + return None + +_ExtendedPrompt() diff --git a/share/gdb/python/gdb/command/type_printers.py b/share/gdb/python/gdb/command/type_printers.py new file mode 100644 index 0000000..81f2ea1 --- /dev/null +++ b/share/gdb/python/gdb/command/type_printers.py @@ -0,0 +1,125 @@ +# Type printer commands. +# Copyright (C) 2010-2013 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +import copy +import gdb + +"""GDB commands for working with type-printers.""" + +class InfoTypePrinter(gdb.Command): + """GDB command to list all registered type-printers. + + Usage: info type-printers + """ + + def __init__ (self): + super(InfoTypePrinter, self).__init__("info type-printers", + gdb.COMMAND_DATA) + + def list_type_printers(self, type_printers): + """Print a list of type printers.""" + # A potential enhancement is to provide an option to list printers in + # "lookup order" (i.e. unsorted). + sorted_type_printers = sorted (copy.copy(type_printers), + key = lambda x: x.name) + for printer in sorted_type_printers: + if printer.enabled: + enabled = '' + else: + enabled = " [disabled]" + print (" %s%s" % (printer.name, enabled)) + + def invoke(self, arg, from_tty): + """GDB calls this to perform the command.""" + sep = '' + for objfile in gdb.objfiles(): + if objfile.type_printers: + print ("%sType printers for %s:" % (sep, objfile.name)) + self.list_type_printers(objfile.type_printers) + sep = '\n' + if gdb.current_progspace().type_printers: + print ("%sType printers for program space:" % sep) + self.list_type_printers(gdb.current_progspace().type_printers) + sep = '\n' + if gdb.type_printers: + print ("%sGlobal type printers:" % sep) + self.list_type_printers(gdb.type_printers) + +class _EnableOrDisableCommand(gdb.Command): + def __init__(self, setting, name): + super(_EnableOrDisableCommand, self).__init__(name, gdb.COMMAND_DATA) + self.setting = setting + + def set_some(self, name, printers): + result = False + for p in printers: + if name == p.name: + p.enabled = self.setting + result = True + return result + + def invoke(self, arg, from_tty): + """GDB calls this to perform the command.""" + for name in arg.split(): + ok = False + for objfile in gdb.objfiles(): + if self.set_some(name, objfile.type_printers): + ok = True + if self.set_some(name, gdb.current_progspace().type_printers): + ok = True + if self.set_some(name, gdb.type_printers): + ok = True + if not ok: + print ("No type printer named '%s'" % name) + + def add_some(self, result, word, printers): + for p in printers: + if p.name.startswith(word): + result.append(p.name) + + def complete(self, text, word): + result = [] + for objfile in gdb.objfiles(): + self.add_some(result, word, objfile.type_printers) + self.add_some(result, word, gdb.current_progspace().type_printers) + self.add_some(result, word, gdb.type_printers) + return result + +class EnableTypePrinter(_EnableOrDisableCommand): + """GDB command to enable the specified type printer. + + Usage: enable type-printer NAME + + NAME is the name of the type-printer. + """ + + def __init__(self): + super(EnableTypePrinter, self).__init__(True, "enable type-printer") + +class DisableTypePrinter(_EnableOrDisableCommand): + """GDB command to disable the specified type-printer. + + Usage: disable type-printer NAME + + NAME is the name of the type-printer. + """ + + def __init__(self): + super(DisableTypePrinter, self).__init__(False, "disable type-printer") + +InfoTypePrinter() +EnableTypePrinter() +DisableTypePrinter() |