1/* Register names and numbers for ARM DWARF.
2   Copyright (C) 2009 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 <string.h>
34#include <dwarf.h>
35
36#define BACKEND arm_
37#include "libebl_CPU.h"
38
39ssize_t
40arm_register_info (Ebl *ebl __attribute__ ((unused)),
41		   int regno, char *name, size_t namelen,
42		   const char **prefix, const char **setname,
43		   int *bits, int *type)
44{
45  if (name == NULL)
46    return 320;
47
48  if (regno < 0 || regno > 320 || namelen < 5)
49    return -1;
50
51  *prefix = "";
52  *bits = 32;
53  *type = DW_ATE_signed;
54  *setname = "integer";
55
56  switch (regno)
57    {
58    case 0 ... 9:
59      name[0] = 'r';
60      name[1] = regno + '0';
61      namelen = 2;
62      break;
63
64    case 10 ... 12:
65      name[0] = 'r';
66      name[1] = '1';
67      name[2] = regno % 10 + '0';
68      namelen = 3;
69      break;
70
71    case 13 ... 15:
72      *type = DW_ATE_address;
73      name[0] = "slp"[regno - 13];
74      name[1] = "prc"[regno - 13];
75      namelen = 2;
76      break;
77
78    case 16 + 0 ... 16 + 7:
79      regno += 96 - 16;
80      /* Fall through.  */
81    case 96 + 0 ... 96 + 7:
82      *setname = "FPA";
83      *type = DW_ATE_float;
84      *bits = 96;
85      name[0] = 'f';
86      name[1] = regno - 96 + '0';
87      namelen = 2;
88      break;
89
90    case 128:
91      *type = DW_ATE_unsigned;
92      return stpcpy (name, "spsr") + 1 - name;
93
94    case 256 + 0 ... 256 + 9:
95      *setname = "VFP";
96      *type = DW_ATE_float;
97      *bits = 64;
98      name[0] = 'd';
99      name[1] = regno - 256 + '0';
100      namelen = 2;
101      break;
102
103    case 256 + 10 ... 256 + 31:
104      *setname = "VFP";
105      *type = DW_ATE_float;
106      *bits = 64;
107      name[0] = 'd';
108      name[1] = (regno - 256) / 10 + '0';
109      name[2] = (regno - 256) % 10 + '0';
110      namelen = 3;
111      break;
112
113    default:
114      *setname = NULL;
115      return 0;
116    }
117
118  name[namelen++] = '\0';
119  return namelen;
120}
121