1# Copyright (C) 2023-2024 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# This file is part of the GDB testsuite.
17# It tests Python-based pretty-printing of stubs.
18
19
20class SPrinter:
21    def __init__(self, val):
22        self.val = val
23
24    def to_string(self):
25        char_ptr = gdb.lookup_type("char").pointer()
26        int_ptr = gdb.lookup_type("int").pointer()
27        # m_i should be after the vtable, which has the size of a pointer
28        i = (
29            (self.val.address.cast(char_ptr) + int_ptr.sizeof)
30            .cast(int_ptr)
31            .dereference()
32        )
33        return "{pp m_i = %d}" % int(i)
34
35
36pp = gdb.printing.RegexpCollectionPrettyPrinter("S")
37pp.add_printer("S", "^S$", SPrinter)
38gdb.printing.register_pretty_printer(gdb.current_objfile(), pp, True)
39