1 /* Register names and numbers for S/390 DWARF.
2 Copyright (C) 2006 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 s390_
37 #include "libebl_CPU.h"
38
39
40 /*
41 zseries (64)
42
43 0-15 gpr0-gpr15 x
44 16-19 fpr[0246]
45 20-24 fpr[13578]
46 25-27 fpr1[024]
47 28 fpr9
48 29-31 fpr1[135]
49 32-47 cr0-cr15 x
50 48-63 ar0-ar15 x
51 64 psw_mask
52 65 psw_address
53 */
54
55
56 ssize_t
s390_register_info(Ebl * ebl,int regno,char * name,size_t namelen,const char ** prefix,const char ** setname,int * bits,int * type)57 s390_register_info (Ebl *ebl __attribute__ ((unused)),
58 int regno, char *name, size_t namelen,
59 const char **prefix, const char **setname,
60 int *bits, int *type)
61 {
62 if (name == NULL)
63 return 66;
64
65 if (regno < 0 || regno > 65 || namelen < 7)
66 return -1;
67
68 *prefix = "%";
69
70 *bits = ebl->class == ELFCLASS64 ? 64 : 32;
71 *type = DW_ATE_unsigned;
72 if (regno < 16)
73 {
74 *setname = "integer";
75 *type = DW_ATE_signed;
76 }
77 else if (regno < 32)
78 {
79 *setname = "FPU";
80 *type = DW_ATE_float;
81 *bits = 64;
82 }
83 else if (regno < 48 || regno > 63)
84 *setname = "control";
85 else
86 {
87 *setname = "access";
88 *bits = 32;
89 }
90
91 switch (regno)
92 {
93 case 0 ... 9:
94 name[0] = 'r';
95 name[1] = regno + '0';
96 namelen = 2;
97 break;
98
99 case 10 ... 15:
100 name[0] = 'r';
101 name[1] = '1';
102 name[2] = regno - 10 + '0';
103 namelen = 3;
104 break;
105
106 case 16 ... 31:
107 name[0] = 'f';
108 regno = (regno & 8) | ((regno & 4) >> 2) | ((regno & 3) << 1);
109 namelen = 1;
110 if (regno >= 10)
111 {
112 regno -= 10;
113 name[namelen++] = '1';
114 }
115 name[namelen++] = regno + '0';
116 break;
117
118 case 32 + 0 ... 32 + 9:
119 case 48 + 0 ... 48 + 9:
120 name[0] = regno < 48 ? 'c' : 'a';
121 name[1] = (regno & 15) + '0';
122 namelen = 2;
123 break;
124
125 case 32 + 10 ... 32 + 15:
126 case 48 + 10 ... 48 + 15:
127 name[0] = regno < 48 ? 'c' : 'a';
128 name[1] = '1';
129 name[2] = (regno & 15) - 10 + '0';
130 namelen = 3;
131 break;
132
133 case 64:
134 return stpcpy (name, "pswm") + 1 - name;
135 case 65:
136 *type = DW_ATE_address;
137 return stpcpy (name, "pswa") + 1 - name;
138
139 default:
140 *setname = NULL;
141 return 0;
142 }
143
144 name[namelen++] = '\0';
145 return namelen;
146 }
147