blob: 0e513e23d82409a647afa3a3c3ed8342e6f199f3 (
plain)
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
|
#include <assert.h>
#include <libelf/gelf.h>
#include <libelfu/libelfu.h>
/*
* Returns the first section beginning in the segment.
*
* Since sections have to be in the file in mapping order to load them
* as a continuous segment, we only have to search by start offset.
*/
ElfuScn* elfu_mScnFirstInSegment(ElfuElf *me, ElfuPhdr *mp)
{
ElfuScn *ms;
assert(me);
assert(mp);
CIRCLEQ_FOREACH(ms, &me->scnList, elem) {
if ((ms->shdr.sh_offset >= mp->phdr.p_offset)
&& (ms->shdr.sh_offset < mp->phdr.p_offset + mp->phdr.p_filesz)) {
return ms;
}
}
return NULL;
}
/*
* Returns the last section ending in the segment.
*
* Since sections have to be in the file in mapping order to load them
* as a continuous segment, we only have to search by end offset.
*/
ElfuScn* elfu_mScnLastInSegment(ElfuElf *me, ElfuPhdr *mp)
{
ElfuScn *last = NULL;
ElfuScn *ms;
assert(me);
assert(mp);
CIRCLEQ_FOREACH(ms, &me->scnList, elem) {
/* Get section size on disk - for NOBITS sections that is 0 bytes. */
size_t size = SCNFILESIZE(&ms->shdr);
if (((ms->shdr.sh_offset + size >= mp->phdr.p_offset)
&& (ms->shdr.sh_offset + size <= mp->phdr.p_offset + mp->phdr.p_filesz))) {
last = ms;
}
}
return last;
}
|
