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      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 
     39 ssize_t
     40 arm_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