/* Simulator cache routines for CGEN simulators (and maybe others).
- Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB, the GNU debugger.
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, or (at your option)
-any later version.
+the Free Software Foundation; either version 3 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. */
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>. */
#define SCACHE_DEFINE_INLINE
scache_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
char *arg, int is_command)
{
- int n;
-
switch (opt)
{
case 'c' :
SCACHE *
scache_lookup (SIM_CPU *cpu, IADDR pc)
{
+ /* FIXME: hash computation is wrong, doesn't take into account
+ NUM_HASH_CHAIN_ENTRIES. A lot of the hash table will be unused! */
unsigned int slot = HASH_PC (pc) & (CPU_SCACHE_NUM_HASH_CHAINS (cpu) - 1);
int i, max_i = CPU_SCACHE_NUM_HASH_CHAIN_ENTRIES (cpu);
SCACHE_MAP *scm;
SCACHE *
scache_lookup_or_alloc (SIM_CPU *cpu, IADDR pc, int n, SCACHE **bufp)
{
+ /* FIXME: hash computation is wrong, doesn't take into account
+ NUM_HASH_CHAIN_ENTRIES. A lot of the hash table will be unused! */
unsigned int slot = HASH_PC (pc) & (CPU_SCACHE_NUM_HASH_CHAINS (cpu) - 1);
int i, max_i = CPU_SCACHE_NUM_HASH_CHAIN_ENTRIES (cpu);
SCACHE_MAP *scm;
static int next_free = 0;
scm = & CPU_SCACHE_HASH_TABLE (cpu) [slot];
+ /* FIXME: This seems rather clumsy. */
for (i = 0; i < next_free; ++i, ++scm)
continue;
++next_free;
/* At this point SCM points to the hash table entry to use.
Now make sure there's room in the cache. */
+ /* FIXME: Kinda weird to use a next_free adjusted scm when cache is
+ flushed. */
{
int elm_size = IMP_PROPS_SCACHE_ELM_SIZE (MACH_IMP_PROPS (CPU_MACH (cpu)));