sim/ppc/cap.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef _CAP_C_
  23 #define _CAP_C_
  24
  25 #ifndef STATIC_INLINE_CAP
  26 #define STATIC_INLINE_CAP STATIC_INLINE
  27 #endif
  28
  29 #include "cap.h"
  30
  31 typedef struct _cap_mapping cap_mapping;
  32 struct _cap_mapping {
  33   unsigned32 external;
  34   void *internal;
  35   cap_mapping *next;
  36 };
  37
  38 struct _cap {
  39   int nr_mappings;
  40   cap_mapping *mappings;
  41 };
  42
  43 INLINE_CAP cap *
  44 cap_create(const char *key)
  45 {
  46   return ZALLOC(cap);
  47 }
  48
  49 INLINE_CAP void
  50 cap_init(cap *map)
  51 {
  52   cap_mapping *current_mapping = map->mappings;
  53   while (current_mapping != NULL) {
  54     cap_mapping *tbd = current_mapping;
  55     current_mapping = tbd->next;
  56     zfree(tbd);
  57   }
  58   map->nr_mappings = 0;
  59   map->mappings = (cap_mapping*)0;
  60 }
  61
  62 INLINE_CAP void *
  63 cap_internal(cap *db,
  64              signed32 external)
  65 {
  66   cap_mapping *current_map = db->mappings;
  67   while (current_map != NULL) {
  68     if (current_map->external == external)
  69       return current_map->internal;
  70     current_map = current_map->next;
  71   }
  72   return (void*)0;
  73 }
  74
  75 INLINE_CAP signed32
  76 cap_external(cap *db,
  77              void *internal)
  78 {
  79   cap_mapping *current_map = db->mappings;
  80   while (current_map != NULL) {
  81     if (current_map->internal == internal)
  82       return current_map->external;
  83     current_map = current_map->next;
  84   }
  85   current_map = ZALLOC(cap_mapping);
  86   current_map->next = db->mappings;
  87   current_map->internal = internal;
  88   db->nr_mappings += 1;
  89   current_map->external = db->nr_mappings;
  90   db->mappings = current_map;
  91   return current_map->external;
  92 }
  93
  94 #endif