1 /* Register names and numbers for BPF DWARF.
2 This file is part of elfutils.
3
4 This file is free software; you can redistribute it and/or modify
5 it under the terms of either
6
7 * the GNU Lesser General Public License as published by the Free
8 Software Foundation; either version 3 of the License, or (at
9 your option) any later version
10
11 or
12
13 * the GNU General Public License as published by the Free
14 Software Foundation; either version 2 of the License, or (at
15 your option) any later version
16
17 or both in parallel, as here.
18
19 elfutils is distributed in the hope that it will be useful, but
20 WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
23
24 You should have received copies of the GNU General Public License and
25 the GNU Lesser General Public License along with this program. If
26 not, see <http://www.gnu.org/licenses/>. */
27
28 #ifdef HAVE_CONFIG_H
29 # include <config.h>
30 #endif
31
32 #include <stdio.h>
33 #include <string.h>
34
35 #include "bpf.h"
36
37 #define BACKEND bpf_
38 #include "libebl_CPU.h"
39
40 ssize_t
bpf_register_info(Ebl * ebl,int regno,char * name,size_t namelen,const char ** prefix,const char ** setname,int * bits,int * type)41 bpf_register_info (Ebl *ebl __attribute__ ((unused)),
42 int regno, char *name, size_t namelen,
43 const char **prefix, const char **setname,
44 int *bits, int *type)
45 {
46 ssize_t len;
47
48 if (name == NULL)
49 return MAX_BPF_REG;
50 if (regno < 0 || regno >= MAX_BPF_REG)
51 return -1;
52
53 *prefix = "";
54 *setname = "integer";
55 *bits = 64;
56 *type = DW_ATE_signed;
57
58 len = snprintf(name, namelen, "r%d", regno);
59 return ((size_t)len < namelen ? len : -1);
60 }
61