ld-cache.c

这个是LINUX下的GDB调度工具的源码

/* The IGEN simulator generator for GDB, the GNU Debugger.

   Copyright 2002 Free Software Foundation, Inc.

   Contributed by Andrew Cagney.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */



#include "misc.h"
#include "lf.h"
#include "table.h"
#include "filter.h"
#include "igen.h"

#include "ld-insn.h"
#include "ld-cache.h"

#ifndef NULL
#define NULL 0
#endif


enum
{
  ca_type,
  ca_field_name,
  ca_derived_name,
  ca_type_def,
  ca_expression,
  nr_cache_rule_fields,
};

static const name_map cache_type_map[] = {
  {"cache", cache_value},
  {"compute", compute_value},
  {"scratch", scratch_value},
  {NULL, 0},
};


cache_entry *
load_cache_table (char *file_name)
{
  cache_entry *cache = NULL;
  cache_entry **last = &cache;
  table *file = table_open (file_name);
  table_entry *entry;
  while ((entry = table_read (file)) != NULL)
    {
      cache_entry *new_rule = ZALLOC (cache_entry);
      new_rule->line = entry->line;
      new_rule->entry_type = name2i (entry->field[ca_type], cache_type_map);
      new_rule->name = entry->field[ca_derived_name];
      filter_parse (&new_rule->original_fields, entry->field[ca_field_name]);
      new_rule->type = entry->field[ca_type_def];
      /* expression is the concatenation of the remaining fields */
      if (entry->nr_fields > ca_expression)
	{
	  int len = 0;
	  int chi;
	  for (chi = ca_expression; chi < entry->nr_fields; chi++)
	    {
	      len += strlen (" : ") + strlen (entry->field[chi]);
	    }
	  new_rule->expression = NZALLOC (char, len);
	  strcpy (new_rule->expression, entry->field[ca_expression]);
	  for (chi = ca_expression + 1; chi < entry->nr_fields; chi++)
	    {
	      strcat (new_rule->expression, " : ");
	      strcat (new_rule->expression, entry->field[chi]);
	    }
	}
      /* insert it */
      *last = new_rule;
      last = &new_rule->next;
    }
  return cache;
}



#ifdef MAIN

igen_options options;

int
main (int argc, char **argv)
{
  cache_entry *rules = NULL;
  lf *l;

  if (argc != 2)
    error (NULL, "Usage: cache <cache-file>\n");

  rules = load_cache_table (argv[1]);
  l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-ld-insn");
  dump_cache_entries (l, "(", rules, ")\n");

  return 0;
}
#endif