/src/elfutils/libdw/dwarf_highpc.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Return high PC attribute of DIE. |
2 | | Copyright (C) 2003, 2005, 2012, 2018 Red Hat, Inc. |
3 | | This file is part of elfutils. |
4 | | |
5 | | This file is free software; you can redistribute it and/or modify |
6 | | it under the terms of either |
7 | | |
8 | | * the GNU Lesser General Public License as published by the Free |
9 | | Software Foundation; either version 3 of the License, or (at |
10 | | your option) any later version |
11 | | |
12 | | or |
13 | | |
14 | | * the GNU General Public License as published by the Free |
15 | | Software Foundation; either version 2 of the License, or (at |
16 | | your option) any later version |
17 | | |
18 | | or both in parallel, as here. |
19 | | |
20 | | elfutils is distributed in the hope that it will be useful, but |
21 | | WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
23 | | General Public License for more details. |
24 | | |
25 | | You should have received copies of the GNU General Public License and |
26 | | the GNU Lesser General Public License along with this program. If |
27 | | not, see <http://www.gnu.org/licenses/>. */ |
28 | | |
29 | | #ifdef HAVE_CONFIG_H |
30 | | # include <config.h> |
31 | | #endif |
32 | | |
33 | | #include <dwarf.h> |
34 | | #include "libdwP.h" |
35 | | |
36 | | |
37 | | int |
38 | | dwarf_highpc (Dwarf_Die *die, Dwarf_Addr *return_addr) |
39 | 0 | { |
40 | 0 | Dwarf_Attribute attr_high_mem; |
41 | 0 | Dwarf_Attribute *attr_high; |
42 | | /* Split compile DIEs inherit high_pc from their skeleton DIE. */ |
43 | 0 | if (is_cudie (die) && die->cu->unit_type == DW_UT_split_compile) |
44 | 0 | attr_high = INTUSE(dwarf_attr_integrate) (die, DW_AT_high_pc, |
45 | 0 | &attr_high_mem); |
46 | 0 | else |
47 | 0 | attr_high = INTUSE(dwarf_attr) (die, DW_AT_high_pc, &attr_high_mem); |
48 | |
|
49 | 0 | if (attr_high == NULL) |
50 | 0 | goto no_addr; |
51 | | |
52 | 0 | if (INTUSE(dwarf_formaddr) (attr_high, return_addr) == 0) |
53 | 0 | return 0; |
54 | | |
55 | | /* DWARF 4 allows high_pc to be a constant offset from low_pc. */ |
56 | 0 | if (INTUSE(dwarf_lowpc) (die, return_addr) == 0) |
57 | 0 | { |
58 | 0 | Dwarf_Word uval; |
59 | 0 | if (INTUSE(dwarf_formudata) (attr_high, &uval) == 0) |
60 | 0 | { |
61 | 0 | *return_addr += uval; |
62 | 0 | return 0; |
63 | 0 | } |
64 | 0 | } |
65 | | |
66 | 0 | no_addr: |
67 | 0 | __libdw_seterrno (DWARF_E_NO_ADDR); |
68 | 0 | return -1; |
69 | 0 | } |
70 | | INTDEF(dwarf_highpc) |