blob: b828f17eaa7711ebeba34ca422f6312bbe142c59 (
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
|
/* Validate an address and the relocatability of an offset from it.
Copyright (C) 2005 Red Hat, Inc.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/licenses/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#include "libdwflP.h"
int
dwfl_validate_address (Dwfl *dwfl, Dwarf_Addr address, Dwarf_Sword offset)
{
Dwfl_Module *mod = INTUSE(dwfl_addrmodule) (dwfl, address);
if (mod == NULL)
return -1;
Dwarf_Addr relative = address;
int idx = INTUSE(dwfl_module_relocate_address) (mod, &relative);
if (idx < 0)
return -1;
if (offset != 0)
{
int offset_idx = -1;
relative = address + offset;
if (relative >= mod->low_addr && relative <= mod->high_addr)
{
offset_idx = INTUSE(dwfl_module_relocate_address) (mod, &relative);
if (offset_idx < 0)
return -1;
}
if (offset_idx != idx)
{
__libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE);
return -1;
}
}
return 0;
}
|
