1 (* gdbif.mod enable interactive connectivity with gdb.
3 Copyright (C) 2011-2024 Free Software Foundation, Inc.
4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
6 This file is part of GNU Modula-2.
8 GNU Modula-2 is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GNU Modula-2 is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 Under Section 7 of GPL version 3, you are granted additional
19 permissions described in the GCC Runtime Library Exception, version
20 3.1, as published by the Free Software Foundation.
22 You should have received a copy of the GNU General Public License and
23 a copy of the GCC Runtime Library Exception along with this program;
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25 <http://www.gnu.org/licenses/>. *)
27 IMPLEMENTATION MODULE gdbif ;
30 FROM libc IMPORT printf, getpid, sleep ;
31 FROM FIO IMPORT File, WriteString, WriteLine, OpenToWrite, Close, IsNoError ;
32 FROM StringConvert IMPORT itos ;
33 FROM DynamicStrings IMPORT String, KillString ;
42 connectSpin - breakpoint placeholder.
45 PROCEDURE connectSpin ;
47 (* do nothing, its purpose is to allow gdb to set breakpoints here. *)
52 sleepSpin - waits for the boolean variable mustWait to become FALSE.
53 It sleeps for a second between each test of the variable.
60 printf ("process %d is waiting for you to:\n", getpid ());
61 printf ("(gdb) attach %d\n", getpid ());
62 printf ("(gdb) break connectSpin\n");
63 printf ("(gdb) print finishSpin()\n");
68 printf ("ok continuing\n");
75 finishSpin - sets boolean mustWait to FALSE.
78 PROCEDURE finishSpin ;
93 file := OpenToWrite (".gdbinit") ;
96 WriteString (file, "attach ") ;
97 s := SFIO.WriteS (file, itos (getpid (), 6, " ", FALSE)) ;
98 WriteString (file, "break connectSpin") ; WriteLine (file) ;
99 WriteString (file, "print finishSpin()") ; WriteLine (file) ;
100 s := KillString (s) ;