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1eee94d3 GM |
1 | (* gdbif.mod enable interactive connectivity with gdb. |
2 | ||
a945c346 | 3 | Copyright (C) 2011-2024 Free Software Foundation, Inc. |
1eee94d3 GM |
4 | Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
5 | ||
6 | This file is part of GNU Modula-2. | |
7 | ||
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) | |
11 | any later version. | |
12 | ||
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. | |
17 | ||
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. | |
21 | ||
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/>. *) | |
26 | ||
27 | IMPLEMENTATION MODULE gdbif ; | |
28 | ||
29 | ||
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 ; | |
34 | IMPORT SFIO ; | |
35 | ||
36 | VAR | |
37 | invoked, | |
38 | mustWait: BOOLEAN ; | |
39 | ||
40 | ||
41 | (* | |
42 | connectSpin - breakpoint placeholder. | |
43 | *) | |
44 | ||
45 | PROCEDURE connectSpin ; | |
46 | BEGIN | |
47 | (* do nothing, its purpose is to allow gdb to set breakpoints here. *) | |
48 | END connectSpin ; | |
49 | ||
50 | ||
51 | (* | |
52 | sleepSpin - waits for the boolean variable mustWait to become FALSE. | |
53 | It sleeps for a second between each test of the variable. | |
54 | *) | |
55 | ||
56 | PROCEDURE sleepSpin ; | |
57 | BEGIN | |
58 | IF mustWait | |
59 | THEN | |
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"); | |
64 | REPEAT | |
65 | sleep (1); | |
66 | printf (".") | |
67 | UNTIL NOT mustWait ; | |
68 | printf ("ok continuing\n"); | |
69 | connectSpin | |
70 | END | |
71 | END sleepSpin ; | |
72 | ||
73 | ||
74 | (* | |
75 | finishSpin - sets boolean mustWait to FALSE. | |
76 | *) | |
77 | ||
78 | PROCEDURE finishSpin ; | |
79 | BEGIN | |
80 | mustWait := FALSE | |
81 | END finishSpin ; | |
82 | ||
83 | ||
84 | (* | |
85 | gdbinit - | |
86 | *) | |
87 | ||
88 | PROCEDURE gdbinit ; | |
89 | VAR | |
90 | file: File ; | |
91 | s : String ; | |
92 | BEGIN | |
93 | file := OpenToWrite (".gdbinit") ; | |
94 | IF IsNoError (file) | |
95 | THEN | |
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) ; | |
101 | Close (file) ; | |
102 | sleepSpin | |
103 | END | |
104 | END gdbinit ; | |
105 | ||
106 | ||
107 | BEGIN | |
108 | mustWait := TRUE | |
109 | END gdbif. |