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Diffstat (limited to 'sim/common/cgen-scache.c')
| -rw-r--r-- | sim/common/cgen-scache.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/sim/common/cgen-scache.c b/sim/common/cgen-scache.c deleted file mode 100644 index e205c9b..0000000 --- a/sim/common/cgen-scache.c +++ /dev/null @@ -1,200 +0,0 @@ -/* Simulator cache routines for CGEN simulators (and maybe others). - Copyright (C) 1996, 1997 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. - -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. */ - -#define SCACHE_P -#define SCACHE_DEFINE_INLINE - -#include "sim-main.h" -#include "libiberty.h" -#include "cgen-scache.h" -#include "sim-options.h" -#include "sim-io.h" - -/* Unused address. */ -#define UNUSED_ADDR 0xffffffff - -static MODULE_INIT_FN scache_init; -static MODULE_UNINSTALL_FN scache_uninstall; - -static DECLARE_OPTION_HANDLER (scache_option_handler); - -#define OPTION_PROFILE_SCACHE (OPTION_START + 0) - -static const OPTION scache_options[] = { - { {"scache-size", optional_argument, NULL, 'c'}, - 'c', "[SIZE]", "Specify size of simulator execution cache", - scache_option_handler }, - { {"profile-scache", no_argument, NULL, OPTION_PROFILE_SCACHE}, - '\0', NULL, "Perform simulator execution cache profiling", - scache_option_handler }, - { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } -}; - -static SIM_RC -scache_option_handler (sd, opt, arg) - SIM_DESC sd; - int opt; - char *arg; -{ - int n; - - switch (opt) - { - case 'c' : - if (WITH_SCACHE) - { - if (arg != NULL) - { - int n = strtol (arg, NULL, 0); - /* The m32r port assumes a cache size of at least 2 so it - can decode both 16 bit insns. */ - if (n < 2) - { - sim_io_eprintf (sd, "invalid scache size `%d'", n); - return SIM_RC_FAIL; - } - /* Ensure it's a multiple of 2. */ - if ((n & (n - 1)) != 0) - { - sim_io_eprintf (sd, "scache size `%d' not a multiple of 2\n", n); - { - /* round up to nearest multiple of 2 */ - int i; - for (i = 1; i < n; i <<= 1) - continue; - n = i; - - } - sim_io_eprintf (sd, "rounding scache size up to %d\n", n); - } - STATE_SCACHE_SIZE (sd) = n; - } - else - STATE_SCACHE_SIZE (sd) = SCACHE_DEFAULT_CACHE_SIZE; - } - else - sim_io_eprintf (sd, "Simulator execution cache not enabled, `--scache-size' ignored\n"); - break; - - case OPTION_PROFILE_SCACHE : - if (WITH_SCACHE && WITH_PROFILE_SCACHE_P) - for (n = 0; n < MAX_NR_PROCESSORS; ++n) - CPU_PROFILE_FLAGS (STATE_CPU (sd, n))[PROFILE_SCACHE_IDX] = 1; - else - sim_io_eprintf (sd, "Simulator cache profiling not compiled in, `--profile-scache' ignored\n"); - break; - - } - - return SIM_RC_OK; -} - -SIM_RC -scache_install (SIM_DESC sd) -{ - sim_add_option_table (sd, scache_options); - sim_module_add_init_fn (sd, scache_init); - sim_module_add_uninstall_fn (sd, scache_uninstall); - - /* This is the default, it may be overridden on the command line. */ - STATE_SCACHE_SIZE (sd) = WITH_SCACHE; - - return SIM_RC_OK; -} - -static SIM_RC -scache_init (SIM_DESC sd) -{ - int c; - - for (c = 0; c < MAX_NR_PROCESSORS; ++c) - { - SIM_CPU *cpu = STATE_CPU (sd, c); - - CPU_SCACHE_SIZE (cpu) = STATE_SCACHE_SIZE (sd); - CPU_SCACHE_CACHE (cpu) = (SCACHE *) - xmalloc (CPU_SCACHE_SIZE (cpu) * sizeof (SCACHE)); - } - - scache_flush (sd); - - return SIM_RC_OK; -} - -static void -scache_uninstall (SIM_DESC sd) -{ - int c; - - for (c = 0; c < MAX_NR_PROCESSORS; ++c) - { - SIM_CPU *cpu = STATE_CPU (sd, c); - - if (CPU_SCACHE_CACHE (cpu) != NULL) - free (CPU_SCACHE_CACHE (cpu)); - } -} - -void -scache_flush (SIM_DESC sd) -{ - int i,c; - SCACHE *sc; - - for (c = 0; c < MAX_NR_PROCESSORS; ++c) - { - SIM_CPU *cpu = STATE_CPU (sd, c); - - /* Technically, this may not be necessary, but it helps debugging. */ - memset (CPU_SCACHE_CACHE (cpu), 0, - CPU_SCACHE_SIZE (cpu) * sizeof (SCACHE)); - - for (i = 0, sc = CPU_SCACHE_CACHE (cpu); i < CPU_SCACHE_SIZE (cpu); - ++i, ++sc) - { - sc->argbuf.addr = UNUSED_ADDR; - } - } -} - -/* Print cache access statics for CPU. */ - -void -scache_print_profile (SIM_CPU *cpu, int verbose) -{ - SIM_DESC sd = CPU_STATE (cpu); - unsigned long hits = CPU_SCACHE_HITS (cpu); - unsigned long misses = CPU_SCACHE_MISSES (cpu); - char buf[20]; - - sim_io_printf (sd, "Simulator Cache Statistics\n\n"); - - /* One could use PROFILE_LABEL_WIDTH here. I chose not to. */ - sim_io_printf (sd, " Cache size: %d\n", - sim_add_commas (buf, sizeof (buf), CPU_SCACHE_SIZE (cpu))); - sim_io_printf (sd, " Hits: %s\n", - sim_add_commas (buf, sizeof (buf), hits)); - sim_io_printf (sd, " Misses: %s\n", - sim_add_commas (buf, sizeof (buf), misses)); - if (hits + misses != 0) - sim_io_printf (sd, " Hit rate: %.2f%%\n", - ((double) hits / ((double) hits + (double) misses)) * 100); - sim_io_printf (sd, "\n"); -} |