Line data Source code
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
57 496 : 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 : {
62 496 : if (name == NULL)
63 : return 66;
64 :
65 488 : if (regno < 0 || regno > 65 || namelen < 7)
66 : return -1;
67 :
68 488 : *prefix = "%";
69 :
70 488 : *bits = ebl->class == ELFCLASS64 ? 64 : 32;
71 488 : *type = DW_ATE_unsigned;
72 488 : if (regno < 16)
73 : {
74 152 : *setname = "integer";
75 152 : *type = DW_ATE_signed;
76 : }
77 336 : else if (regno < 32)
78 : {
79 128 : *setname = "FPU";
80 128 : *type = DW_ATE_float;
81 128 : *bits = 64;
82 : }
83 208 : else if (regno < 48 || regno > 63)
84 80 : *setname = "control";
85 : else
86 : {
87 128 : *setname = "access";
88 128 : *bits = 32;
89 : }
90 :
91 488 : switch (regno)
92 : {
93 80 : case 0 ... 9:
94 80 : name[0] = 'r';
95 80 : name[1] = regno + '0';
96 80 : namelen = 2;
97 80 : break;
98 :
99 72 : case 10 ... 15:
100 72 : name[0] = 'r';
101 72 : name[1] = '1';
102 72 : name[2] = regno - 10 + '0';
103 72 : namelen = 3;
104 72 : break;
105 :
106 128 : case 16 ... 31:
107 128 : name[0] = 'f';
108 128 : regno = (regno & 8) | ((regno & 4) >> 2) | ((regno & 3) << 1);
109 128 : namelen = 1;
110 128 : if (regno >= 10)
111 : {
112 48 : regno -= 10;
113 48 : name[namelen++] = '1';
114 : }
115 128 : name[namelen++] = regno + '0';
116 128 : break;
117 :
118 120 : case 32 + 0 ... 32 + 9:
119 : case 48 + 0 ... 48 + 9:
120 120 : name[0] = regno < 48 ? 'c' : 'a';
121 120 : name[1] = (regno & 15) + '0';
122 120 : namelen = 2;
123 120 : break;
124 :
125 72 : case 32 + 10 ... 32 + 15:
126 : case 48 + 10 ... 48 + 15:
127 72 : name[0] = regno < 48 ? 'c' : 'a';
128 72 : name[1] = '1';
129 72 : name[2] = (regno & 15) - 10 + '0';
130 72 : namelen = 3;
131 72 : break;
132 :
133 : case 64:
134 16 : return stpcpy (name, "pswm") + 1 - name;
135 8 : case 65:
136 8 : *type = DW_ATE_address;
137 16 : return stpcpy (name, "pswa") + 1 - name;
138 :
139 0 : default:
140 0 : *setname = NULL;
141 0 : return 0;
142 : }
143 :
144 472 : name[namelen++] = '\0';
145 472 : return namelen;
146 : }
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