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authorAlexander Kanavin <alexander.kanavin@linux.intel.com>2017-11-10 17:38:59 +0200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-01-02 17:24:36 +0000
commit0d5475a3b28d9e2c9273967a03726bb6c427bd11 (patch)
tree9c9149b6987b0aeb9786511256e7fe5de0448624 /meta/recipes-devtools/dwarfsrcfiles/files
parentb09bad9de0e2c848dea1592f06d6a30d194ec575 (diff)
downloadpoky-0d5475a3b28d9e2c9273967a03726bb6c427bd11.tar.gz
package.bbclass: replace rpm/debugedit with dwarfsrcfiles
Debugedit provided by rpm 4.14 is rewriting binaries in-place, and was found to produce broken output at least for grub: http://lists.openembedded.org/pipermail/openembedded-core/2017-November/143989.html A replacement utility was suggested via private mail: https://lists.fedorahosted.org/archives/list/elfutils-devel@lists.fedorahosted.org/message/VZP4G5N2ELYZEDAB3QYLXYHDGX4WMCUF/ (From OE-Core rev: f2e6e1d3bfd4c92ef0f5ed4721fd9050c59dafca) Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/dwarfsrcfiles/files')
-rw-r--r--meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c b/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c
new file mode 100644
index 0000000000..af7af524eb
--- /dev/null
+++ b/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c
@@ -0,0 +1,111 @@
1// dwarfsrcfiles.c - Get source files associated with the dwarf in a elf file.
2// gcc -Wall -g -O2 -lelf -ldw -o dwarfsrcfiles dwarfsrcfiles.c
3//
4// Copyright (C) 2011, Mark Wielaard <mjw@redhat.com>
5//
6// This file is free software. You can redistribute it and/or modify
7// it under the terms of the GNU General Public License (GPL); either
8// version 2, or (at your option) any later version.
9
10#include <argp.h>
11#include <stdio.h>
12
13#include <dwarf.h>
14#include <elfutils/libdw.h>
15#include <elfutils/libdwfl.h>
16
17static int
18process_cu (Dwarf_Die *cu_die)
19{
20 Dwarf_Attribute attr;
21 const char *name;
22 const char *dir = NULL;
23
24 Dwarf_Files *files;
25 size_t n;
26 int i;
27
28 if (dwarf_tag (cu_die) != DW_TAG_compile_unit)
29 {
30 fprintf (stderr, "DIE isn't a compile unit");
31 return -1;
32 }
33
34 if (dwarf_attr (cu_die, DW_AT_name, &attr) == NULL)
35 {
36 fprintf(stderr, "CU doesn't have a DW_AT_name");
37 return -1;
38 }
39
40 name = dwarf_formstring (&attr);
41 if (name == NULL)
42 {
43 fprintf(stderr, "Couldn't get DW_AT_name as string, %s",
44 dwarf_errmsg (-1));
45 return -1;
46 }
47
48 if (dwarf_attr (cu_die, DW_AT_comp_dir, &attr) != NULL)
49 {
50 dir = dwarf_formstring (&attr);
51 if (dir == NULL)
52 {
53 fprintf(stderr, "Couldn't get DW_AT_comp_die as string, %s",
54 dwarf_errmsg (-1));
55 return -1;
56 }
57 }
58
59 if (dir == NULL)
60 printf ("%s\n", name);
61 else
62 printf ("%s/%s\n", dir, name);
63
64 if (dwarf_getsrcfiles (cu_die, &files, &n) != 0)
65 {
66 fprintf(stderr, "Couldn't get CU file table, %s",
67 dwarf_errmsg (-1));
68 return -1;
69 }
70
71 for (i = 1; i < n; i++)
72 {
73 const char *file = dwarf_filesrc (files, i, NULL, NULL);
74 if (dir != NULL && file[0] != '/')
75 printf ("\t%s/%s\n", dir, file);
76 else
77 printf ("\t%s\n", file);
78 }
79
80 return 0;
81}
82
83int
84main (int argc, char **argv)
85{
86 char* args[3];
87 int res = 0;
88 Dwfl *dwfl;
89 Dwarf_Addr bias;
90
91 if (argc != 2)
92 fprintf(stderr, "Usage %s <file>", argv[0]);
93
94 // Pretend "dwarfsrcfiles -e <file>" was given, so we can use standard
95 // dwfl argp parser to open the file for us and get our Dwfl. Useful
96 // in case argument is an ET_REL file (like kernel modules). libdwfl
97 // will fix up relocations for us.
98 args[0] = argv[0];
99 args[1] = "-e";
100 args[2] = argv[1];
101
102 argp_parse (dwfl_standard_argp (), 3, args, 0, NULL, &dwfl);
103
104 Dwarf_Die *cu = NULL;
105 while ((cu = dwfl_nextcu (dwfl, cu, &bias)) != NULL)
106 res |= process_cu (cu);
107
108 dwfl_end (dwfl);
109
110 return res;
111}