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
  29 #include "log.h"
  30 #include "command.h"
  31
  32 #include <string.h>
  33 #include <stdlib.h>
  34
  35 reg_arch_type_t *reg_arch_types = NULL;
  36
  37 reg_t* register_get_by_name(reg_cache_t *first, char *name, int search_all)
  38 {
  39         int i;
  40         reg_cache_t *cache = first;
  41
  42         while (cache)
  43         {
  44                 for (i = 0; i < cache->num_regs; i++)
  45                 {
  46                         if (strcmp(cache->reg_list[i].name, name) == 0)
  47                                 return &(cache->reg_list[i]);
  48                 }
  49
  50                 if (search_all)
  51                         cache = cache->next;
  52                 else
  53                         break;
  54         }
  55
  56         return NULL;
  57 }
  58
  59 reg_cache_t** register_get_last_cache_p(reg_cache_t **first)
  60 {
  61         reg_cache_t **cache_p = first;
  62
  63         if (*cache_p)
  64                 while (*cache_p)
  65                         cache_p = &((*cache_p)->next);
  66         else
  67                 return first;
  68
  69         return cache_p;
  70 }
  71
  72 int register_reg_arch_type(int (*get)(reg_t *reg), int (*set)(reg_t *reg, u8 *buf))
  73 {
  74         reg_arch_type_t** arch_type_p = &reg_arch_types;
  75         int id = 0;
  76
  77         if (*arch_type_p)
  78         {
  79                 while (*arch_type_p)
  80                 {
  81                         id = (*arch_type_p)->id;
  82                         arch_type_p = &((*arch_type_p)->next);
  83                 }
  84         }
  85
  86         (*arch_type_p) = malloc(sizeof(reg_arch_type_t));
  87         (*arch_type_p)->id = id + 1;
  88         (*arch_type_p)->set = set;
  89         (*arch_type_p)->get = get;
  90         (*arch_type_p)->next = NULL;
  91
  92         return id + 1;
  93 }
  94
  95 reg_arch_type_t* register_get_arch_type(int id)
  96 {
  97         reg_arch_type_t *arch_type = reg_arch_types;
  98
  99         while (arch_type)
 100         {
 101                 if (arch_type->id == id)
 102                         return arch_type;
 103                 arch_type = arch_type->next;
 104         }
 105         LOG_ERROR("BUG: encountered unregistered arch type 0x%08x", id);
 106         exit(-1);
 107         return NULL;
 108 }
 109
 110
 111
 112 static int register_get_dummy_core_reg(reg_t *reg)
 113 {
 114         return ERROR_OK;
 115 }
 116
 117 static int register_set_dummy_core_reg(reg_t *reg, u8 *buf)
 118 {
 119         reg->dirty = 1;
 120         reg->valid = 1;
 121
 122         return ERROR_OK;
 123 }
 124
 125 void register_init_dummy(reg_t *reg)
 126 {
 127         static int dummy_arch_type = -1;
 128         if (dummy_arch_type == -1 )
 129                 dummy_arch_type = register_reg_arch_type(register_get_dummy_core_reg, register_set_dummy_core_reg);
 130
 131         reg->arch_type = dummy_arch_type;
 132 }