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1 /* Register names and numbers for SPARC DWARF.
2    Copyright (C) 2005, 2006, 2015 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 sparc_
37 #include "libebl_CPU.h"
38 
39 ssize_t
sparc_register_info(Ebl * ebl,int regno,char * name,size_t namelen,const char ** prefix,const char ** setname,int * bits,int * type)40 sparc_register_info (Ebl *ebl,
41 		     int regno, char *name, size_t namelen,
42 		     const char **prefix, const char **setname,
43 		     int *bits, int *type)
44 {
45   const int nfp = 32 + (ebl->class == ELFCLASS32 ? 0 : 16);
46   const int nspec = ebl->class == ELFCLASS32 ? 8 : 6;
47 
48   if (name == NULL)
49     return 32 + nfp + nspec;
50 
51   if (regno < 0 || regno >= 32 + nfp + nspec || namelen < 6)
52     return -1;
53 
54   *bits = ebl->class == ELFCLASS32 ? 32 : 64;
55   *type = DW_ATE_signed;
56 
57   *prefix = "%";
58 
59   if (regno >= 32 + nfp)
60     {
61       regno -= 32 + nfp;
62       static const char names[2][8][6] =
63 	{
64 	  { "y", "psr", "wim", "tbr", "pc", "npc", "fsr", "csr" }, /* v8 */
65 	  { "pc", "npc", "state", "fsr", "fprs", "y" } /* v9 */
66 	};
67       *setname = "control";
68       *type = DW_ATE_unsigned;
69       if ((ebl->class == ELFCLASS64 ? 0 : 4) + 1 - (unsigned int) regno <= 1)
70 	*type = DW_ATE_address;
71       return stpncpy (name, names[ebl->class == ELFCLASS64][regno],
72 		      namelen) + 1 - name;
73     }
74 
75   if (regno < 32)
76     {
77       *setname = "integer";
78       name[0] = "goli"[regno >> 3];
79       name[1] = (regno & 7) + '0';
80       namelen = 2;
81       if ((regno & 8) && (regno & 7) == 6)
82 	*type = DW_ATE_address;
83     }
84   else
85     {
86       *setname = "FPU";
87       *type = DW_ATE_float;
88 
89       regno -= 32;
90       if (regno >= 32)
91 	regno = 32 + 2 * (regno - 32);
92       else
93 	*bits = 32;
94 
95       name[0] = 'f';
96       if (regno < 10)
97 	{
98 	  name[1] = regno + '0';
99 	  namelen = 2;
100 	}
101       else
102 	{
103 	  name[1] = regno / 10 + '0';
104 	  name[2] = regno % 10 + '0';
105 	  namelen = 3;
106 	}
107     }
108 
109   name[namelen++] = '\0';
110   return namelen;
111 }
112