1/* Register names and numbers for Alpha DWARF.
2   Copyright (C) 2007 Red Hat, Inc.
3   This file is part of Red Hat elfutils.
4
5   Red Hat elfutils is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by the
7   Free Software Foundation; version 2 of the License.
8
9   Red Hat elfutils is distributed in the hope that it will be useful, but
10   WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   General Public License for more details.
13
14   You should have received a copy of the GNU General Public License along
15   with Red Hat elfutils; if not, write to the Free Software Foundation,
16   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18   Red Hat elfutils is an included package of the Open Invention Network.
19   An included package of the Open Invention Network is a package for which
20   Open Invention Network licensees cross-license their patents.  No patent
21   license is granted, either expressly or impliedly, by designation as an
22   included package.  Should you wish to participate in the Open Invention
23   Network licensing program, please visit www.openinventionnetwork.com
24   <http://www.openinventionnetwork.com>.  */
25
26#ifdef HAVE_CONFIG_H
27# include <config.h>
28#endif
29
30#include <string.h>
31#include <dwarf.h>
32
33#define BACKEND alpha_
34#include "libebl_CPU.h"
35
36ssize_t
37alpha_register_info (Ebl *ebl __attribute__ ((unused)),
38		     int regno, char *name, size_t namelen,
39		     const char **prefix, const char **setname,
40		     int *bits, int *type)
41{
42  if (name == NULL)
43    return 67;
44
45  if (regno < 0 || regno > 66 || namelen < 7)
46    return -1;
47
48  *prefix = "$";
49
50  *bits = 64;
51  *type = DW_ATE_signed;
52  *setname = "integer";
53  if (regno >= 32 && regno < 64)
54    {
55      *setname = "FPU";
56      *type = DW_ATE_float;
57    }
58
59  switch (regno)
60    {
61    case 0:
62      name[0] = 'v';
63      name[1] = '0';
64      namelen = 2;
65      break;
66
67    case 1 ... 8:
68      name[0] = 't';
69      name[1] = regno - 1 + '0';
70      namelen = 2;
71      break;
72
73    case 9 ... 15:
74      name[0] = 's';
75      name[1] = regno - 9 + '0';
76      namelen = 2;
77      break;
78
79    case 16 ... 21:
80      name[0] = 'a';
81      name[1] = regno - 16 + '0';
82      namelen = 2;
83      break;
84
85    case 22 ... 23:
86      name[0] = 't';
87      name[1] = regno - 22 + '8';
88      namelen = 2;
89      break;
90
91    case 24 ... 25:
92      name[0] = 't';
93      name[1] = '1';
94      name[2] = regno - 24 + '0';
95      namelen = 3;
96      break;
97
98    case 26:
99      *type = DW_ATE_address;
100      return stpcpy (name, "ra") + 1 - name;
101
102    case 27:
103      return stpcpy (name, "t12") + 1 - name;
104
105    case 28:
106      return stpcpy (name, "at") + 1 - name;
107
108    case 29:
109      *type = DW_ATE_address;
110      return stpcpy (name, "gp") + 1 - name;
111
112    case 30:
113      *type = DW_ATE_address;
114      return stpcpy (name, "sp") + 1 - name;
115
116    case 31:
117      return stpcpy (name, "zero") + 1 - name;
118
119    case 32 ... 32 + 9:
120      name[0] = 'f';
121      name[1] = regno - 32 + '0';
122      namelen = 2;
123      break;
124
125    case 32 + 10 ... 32 + 19:
126      name[0] = 'f';
127      name[1] = '1';
128      name[2] = regno - 32 - 10 + '0';
129      namelen = 3;
130      break;
131
132    case 32 + 20 ... 32 + 29:
133      name[0] = 'f';
134      name[1] = '2';
135      name[2] = regno - 32 - 20 + '0';
136      namelen = 3;
137      break;
138
139    case 32 + 30:
140      return stpcpy (name, "f30") + 1 - name;
141
142    case 32 + 31:
143      *type = DW_ATE_unsigned;
144      return stpcpy (name, "fpcr") + 1 - name;
145
146    case 64:
147      *type = DW_ATE_address;
148      return stpcpy (name, "pc") + 1 - name;
149
150    case 66:
151      *type = DW_ATE_address;
152      return stpcpy (name, "unique") + 1 - name;
153
154    default:
155      *setname = NULL;
156      return 0;
157    }
158
159  name[namelen++] = '\0';
160  return namelen;
161}
162