src/target/register.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "register.h"
  28 #include "log.h"
  29
  30
  31 reg_arch_type_t *reg_arch_types = NULL;
  32
  33 reg_t* register_get_by_name(reg_cache_t *first, char *name, int search_all)
  34 {
  35         int i;
  36         reg_cache_t *cache = first;
  37
  38         while (cache)
  39         {
  40                 for (i = 0; i < cache->num_regs; i++)
  41                 {
  42                         if (strcmp(cache->reg_list[i].name, name) == 0)
  43                                 return &(cache->reg_list[i]);
  44                 }
  45
  46                 if (search_all)
  47                         cache = cache->next;
  48                 else
  49                         break;
  50         }
  51
  52         return NULL;
  53 }
  54
  55 reg_cache_t** register_get_last_cache_p(reg_cache_t **first)
  56 {
  57         reg_cache_t **cache_p = first;
  58
  59         if (*cache_p)
  60                 while (*cache_p)
  61                         cache_p = &((*cache_p)->next);
  62         else
  63                 return first;
  64
  65         return cache_p;
  66 }
  67
  68 int register_reg_arch_type(int (*get)(reg_t *reg), int (*set)(reg_t *reg, uint8_t *buf))
  69 {
  70         reg_arch_type_t** arch_type_p = &reg_arch_types;
  71         int id = 0;
  72
  73         if (*arch_type_p)
  74         {
  75                 while (*arch_type_p)
  76                 {
  77                         id = (*arch_type_p)->id;
  78                         arch_type_p = &((*arch_type_p)->next);
  79                 }
  80         }
  81
  82         (*arch_type_p) = malloc(sizeof(reg_arch_type_t));
  83         (*arch_type_p)->id = id + 1;
  84         (*arch_type_p)->set = set;
  85         (*arch_type_p)->get = get;
  86         (*arch_type_p)->next = NULL;
  87
  88         return id + 1;
  89 }
  90
  91 reg_arch_type_t* register_get_arch_type(int id)
  92 {
  93         reg_arch_type_t *arch_type = reg_arch_types;
  94
  95         while (arch_type)
  96         {
  97                 if (arch_type->id == id)
  98                         return arch_type;
  99                 arch_type = arch_type->next;
 100         }
 101         LOG_ERROR("BUG: encountered unregistered arch type 0x%08x", id);
 102         exit(-1);
 103         return NULL;
 104 }
 105
 106 static int register_get_dummy_core_reg(reg_t *reg)
 107 {
 108         return ERROR_OK;
 109 }
 110
 111 static int register_set_dummy_core_reg(reg_t *reg, uint8_t *buf)
 112 {
 113         reg->dirty = 1;
 114         reg->valid = 1;
 115
 116         return ERROR_OK;
 117 }
 118
 119 void register_init_dummy(reg_t *reg)
 120 {
 121         static int dummy_arch_type = -1;
 122         if (dummy_arch_type == -1)
 123                 dummy_arch_type = register_reg_arch_type(register_get_dummy_core_reg, register_set_dummy_core_reg);
 124
 125         reg->arch_type = dummy_arch_type;
 126 }