1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-debug-link)
#:use-module (guix elf)
#:use-module (guix build utils)
#:use-module (guix build debug-link)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix tests)
#:use-module (guix monads)
#:use-module (guix derivations)
#:use-module (gnu packages bootstrap)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (rnrs io ports)
#:use-module (ice-9 match))
(define %guile-executable
(match (false-if-exception (readlink "/proc/self/exe"))
((? string? program)
(and (file-exists? program) (elf-file? program)
program))
(_
#f)))
(define read-elf
(compose parse-elf get-bytevector-all))
\f
(test-begin "debug-link")
(unless %guile-executable (test-skip 1))
(test-assert "elf-debuglink"
(let ((elf (call-with-input-file %guile-executable read-elf)))
(match (call-with-values (lambda () (elf-debuglink elf)) list)
((#f #f) ;no '.gnu_debuglink' section
(pk 'no-debuglink #t))
(((? string? file) (? integer? crc))
(string-suffix? ".debug" file)))))
;; Since we need %BOOTSTRAP-GCC and co., we have to skip the following tests
;; when networking is unreachable because we'd fail to download it.
(unless (network-reachable?) (test-skip 1))
(test-assertm "elf-debuglink"
;; Check whether we can compute the CRC just like objcopy, and whether we
;; can retrieve it.
(let* ((code (plain-file "test.c" "int main () { return 42; }"))
(exp (with-imported-modules '((guix build utils)
(guix build debug-link)
(guix elf))
#~(begin
(use-modules (guix build utils)
(guix build debug-link)
(guix elf)
(rnrs io ports))
(define read-elf
(compose parse-elf get-bytevector-all))
(setenv "PATH" (string-join '(#$%bootstrap-gcc
#$%bootstrap-binutils)
"/bin:" 'suffix))
(invoke "gcc" "-O0" "-g" #$code "-o" "exe")
(copy-file "exe" "exe.debug")
(invoke "strip" "--only-keep-debug" "exe.debug")
(invoke "strip" "--strip-debug" "exe")
(invoke "objcopy" "--add-gnu-debuglink=exe.debug"
"exe")
(call-with-values (lambda ()
(elf-debuglink
(call-with-input-file "exe"
read-elf)))
(lambda (file crc)
(call-with-output-file #$output
(lambda (port)
(let ((expected (call-with-input-file "exe.debug"
debuglink-crc32)))
(write (list file (= crc expected))
port))))))))))
(mlet* %store-monad ((drv (gexp->derivation "debuglink" exp))
(x (built-derivations (list drv))))
(call-with-input-file (derivation->output-path drv)
(lambda (port)
(return (match (read port)
(("exe.debug" #t) #t)
(x (pk 'fail x #f)))))))))
(unless (network-reachable?) (test-skip 1))
(test-assertm "set-debuglink-crc"
;; Check whether 'set-debuglink-crc' successfully updates the CRC.
(let* ((code (plain-file "test.c" "int main () { return 42; }"))
(debug (plain-file "exe.debug" "a"))
(exp (with-imported-modules '((guix build utils)
(guix build debug-link)
(guix elf))
#~(begin
(use-modules (guix build utils)
(guix build debug-link)
(guix elf)
(rnrs io ports))
(define read-elf
(compose parse-elf get-bytevector-all))
(setenv "PATH" (string-join '(#$%bootstrap-gcc
#$%bootstrap-binutils)
"/bin:" 'suffix))
(invoke "gcc" "-O0" "-g" #$code "-o" "exe")
(copy-file "exe" "exe.debug")
(invoke "strip" "--only-keep-debug" "exe.debug")
(invoke "strip" "--strip-debug" "exe")
(invoke "objcopy" "--add-gnu-debuglink=exe.debug"
"exe")
(set-debuglink-crc "exe" #$debug)
(call-with-values (lambda ()
(elf-debuglink
(call-with-input-file "exe"
read-elf)))
(lambda (file crc)
(call-with-output-file #$output
(lambda (port)
(write (list file crc) port)))))))))
(mlet* %store-monad ((drv (gexp->derivation "debuglink" exp))
(x (built-derivations (list drv))))
(call-with-input-file (derivation->output-path drv)
(lambda (port)
(return (match (read port)
(("exe.debug" crc)
(= crc (debuglink-crc32 (open-input-string "a"))))
(x
(pk 'fail x #f)))))))))
(test-end "debug-link")
|