sim/igen/ld-cache.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22
  23
  24 #include "misc.h"
  25 #include "lf.h"
  26 #include "table.h"
  27 #include "filter.h"
  28 #include "igen.h"
  29
  30 #include "ld-insn.h"
  31 #include "ld-cache.h"
  32
  33 #ifndef NULL
  34 #define NULL 0
  35 #endif
  36
  37
  38 enum
  39 {
  40   ca_type,
  41   ca_field_name,
  42   ca_derived_name,
  43   ca_type_def,
  44   ca_expression,
  45   nr_cache_rule_fields,
  46 };
  47
  48 static const name_map cache_type_map[] = {
  49   {"cache", cache_value},
  50   {"compute", compute_value},
  51   {"scratch", scratch_value},
  52   {NULL, 0},
  53 };
  54
  55
  56 cache_entry *
  57 load_cache_table (char *file_name)
  58 {
  59   cache_entry *cache = NULL;
  60   cache_entry **last = &cache;
  61   table *file = table_open (file_name);
  62   table_entry *entry;
  63   while ((entry = table_read (file)) != NULL)
  64     {
  65       cache_entry *new_rule = ZALLOC (cache_entry);
  66       new_rule->line = entry->line;
  67       new_rule->entry_type = name2i (entry->field[ca_type], cache_type_map);
  68       new_rule->name = entry->field[ca_derived_name];
  69       filter_parse (&new_rule->original_fields, entry->field[ca_field_name]);
  70       new_rule->type = entry->field[ca_type_def];
  71       /* expression is the concatenation of the remaining fields */
  72       if (entry->nr_fields > ca_expression)
  73         {
  74           int len = 0;
  75           int chi;
  76           for (chi = ca_expression; chi < entry->nr_fields; chi++)
  77             {
  78               len += strlen (" : ") + strlen (entry->field[chi]);
  79             }
  80           new_rule->expression = NZALLOC (char, len);
  81           strcpy (new_rule->expression, entry->field[ca_expression]);
  82           for (chi = ca_expression + 1; chi < entry->nr_fields; chi++)
  83             {
  84               strcat (new_rule->expression, " : ");
  85               strcat (new_rule->expression, entry->field[chi]);
  86             }
  87         }
  88       /* insert it */
  89       *last = new_rule;
  90       last = &new_rule->next;
  91     }
  92   return cache;
  93 }
  94
  95
  96
  97 #ifdef MAIN
  98
  99 igen_options options;
 100
 101 int
 102 main (int argc, char **argv)
 103 {
 104   cache_entry *rules = NULL;
 105   lf *l;
 106
 107   if (argc != 2)
 108     error (NULL, "Usage: cache <cache-file>\n");
 109
 110   rules = load_cache_table (argv[1]);
 111   l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-ld-insn");
 112   dump_cache_entries (l, "(", rules, ")\n");
 113
 114   return 0;
 115 }
 116 #endif