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authorAndrew Cagney <cagney@redhat.com>1997-09-04 03:47:39 +0000
committerAndrew Cagney <cagney@redhat.com>1997-09-04 03:47:39 +0000
commita34abff813f4fdd5f289ea45de9e874e31e7edf3 (patch)
treef6d3be383893c3adaae166e570d5eccd71f08427 /sim/common/sim-memopt.c
parent600d83316cfa68f72666d792244890789812b51a (diff)
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o Add modulo argument to sim_core_attach
o Add sim-memopt module - memory option processing.
Diffstat (limited to 'sim/common/sim-memopt.c')
-rw-r--r--sim/common/sim-memopt.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/sim/common/sim-memopt.c b/sim/common/sim-memopt.c
new file mode 100644
index 0000000..be98a4a
--- /dev/null
+++ b/sim/common/sim-memopt.c
@@ -0,0 +1,261 @@
+/* Simulator memory option handling.
+ 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. */
+
+#include "sim-main.h"
+#include "sim-assert.h"
+#include "sim-options.h"
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+/* "core" command line options. */
+
+enum {
+ OPTION_MEMORY_DELETE = OPTION_START,
+ OPTION_MEMORY_REGION,
+ OPTION_MEMORY_SIZE,
+ OPTION_MEMORY_INFO,
+ OPTION_MEMORY_ALIAS,
+ OPTION_MEMORY_CLEAR,
+};
+
+static DECLARE_OPTION_HANDLER (memory_option_handler);
+
+static const OPTION memory_options[] =
+{
+ { {"delete-memory", required_argument, NULL, OPTION_MEMORY_DELETE },
+ '\0', "ADDRESS", "Delete memory at ADDRESS",
+ memory_option_handler },
+
+ { {"memory-region", required_argument, NULL, OPTION_MEMORY_REGION },
+ '\0', "ADDRESS,SIZE[,MODULO]", "Add a memory region",
+ memory_option_handler },
+
+ { {"memory-alias", required_argument, NULL, OPTION_MEMORY_ALIAS },
+ '\0', "ADDRESS,SIZE{,ADDRESS}", "Add memory shadow",
+ memory_option_handler },
+
+ { {"memory-size", required_argument, NULL, OPTION_MEMORY_SIZE },
+ '\0', "SIZE", "Add memory at address zero",
+ memory_option_handler },
+
+ { {"memory-clear", no_argument, NULL, OPTION_MEMORY_CLEAR },
+ '\0', NULL, "Clear all memory regions",
+ memory_option_handler },
+
+ { {"info-memory", no_argument, NULL, OPTION_MEMORY_INFO },
+ '\0', NULL, "Add memory at address zero",
+ memory_option_handler },
+
+ { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
+};
+
+
+static SIM_RC
+memory_option_handler (sd, opt, arg, is_command)
+ SIM_DESC sd;
+ int opt;
+ char *arg;
+ int is_command;
+{
+ switch (opt)
+ {
+
+ case OPTION_MEMORY_DELETE:
+ {
+ address_word addr = strtoul (arg, NULL, 0);
+ sim_memopt **entry = &STATE_MEMOPT (sd);
+ sim_memopt *alias;
+ while ((*entry) != NULL && (*entry)->addr != addr)
+ entry = &(*entry)->next;
+ if ((*entry) == NULL)
+ {
+ sim_io_eprintf (sd, "Memory at 0x%lx not found, not deleted\n",
+ (long) addr);
+ return SIM_RC_FAIL;
+ }
+ /* delete any buffer */
+ if ((*entry)->buf != NULL)
+ zfree ((*entry)->buf);
+ /* delete it and its aliases */
+ alias = *entry;
+ *entry = alias->next;
+ while (alias != NULL)
+ {
+ sim_memopt *dead = alias;
+ alias = alias->alias;
+ sim_core_detach (sd, NULL, attach_raw_memory, 0, dead->addr);
+ zfree (dead);
+ }
+ return SIM_RC_OK;
+ }
+
+ case OPTION_MEMORY_REGION:
+ {
+ char *chp = arg;
+ address_word addr = 0;
+ address_word nr_bytes = 0;
+ unsigned modulo = 0;
+ sim_memopt **entry = &STATE_MEMOPT (sd);
+ /* parse the arguments */
+ addr = strtoul (chp, &chp, 0);
+ if (*chp != ',')
+ {
+ sim_io_eprintf (sd, "Missing size for memory-region\n");
+ return SIM_RC_FAIL;
+ }
+ chp++;
+ nr_bytes = strtoul (chp, &chp, 0);
+ if (*chp == ',')
+ modulo = strtoul (chp + 1, NULL, 0);
+ /* try to attach it */
+ sim_core_attach (sd, NULL,
+ attach_raw_memory, access_read_write_exec, 0,
+ addr, nr_bytes, modulo, NULL, NULL);
+ /* ok, so insert it */
+ while ((*entry) != NULL)
+ entry = &(*entry)->next;
+ (*entry) = ZALLOC (sim_memopt);
+ (*entry)->addr = addr;
+ (*entry)->nr_bytes = nr_bytes;
+ (*entry)->modulo = modulo;
+ return SIM_RC_OK;
+ }
+
+ case OPTION_MEMORY_ALIAS:
+ {
+ sim_io_eprintf (sd, "memory-alias not supported for for this simulator\n");
+ break;
+ }
+
+ case OPTION_MEMORY_SIZE:
+ {
+ sim_io_eprintf (sd, "memory-size not supported for for this simulator\n");
+ return SIM_RC_FAIL;
+ break;
+ }
+
+ case OPTION_MEMORY_CLEAR:
+ {
+ sim_memopt *entry;
+ for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next)
+ {
+ sim_memopt *alias;
+ for (alias = entry; alias != NULL; alias = alias->next)
+ {
+ unsigned8 zero = 0;
+ address_word nr_bytes;
+ if (alias->modulo != 0)
+ nr_bytes = alias->modulo;
+ else
+ nr_bytes = alias->nr_bytes;
+ sim_core_write_buffer (sd, NULL, sim_core_write_map,
+ &zero,
+ alias->addr + nr_bytes,
+ sizeof (zero));
+
+ }
+ }
+ return SIM_RC_OK;
+ break;
+ }
+
+ case OPTION_MEMORY_INFO:
+ {
+ sim_memopt *entry;
+ sim_io_printf (sd, "Memory maps:\n");
+ for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next)
+ {
+ sim_memopt *alias;
+ sim_io_printf (sd, " memory");
+ if (entry->alias == NULL)
+ {
+ sim_io_printf (sd, " region 0x%08lx,0x%lx",
+ (long) entry->addr,
+ (long) entry->nr_bytes);
+ if (entry->modulo != 0)
+ sim_io_printf (sd, ",0x%lx", (long) entry->modulo);
+ }
+ else
+ {
+ sim_io_printf (sd, " alias 0x%08lx,0x%lx",
+ (long) entry->addr,
+ (long) entry->nr_bytes);
+ for (alias = entry->alias; alias != NULL; alias = alias->next)
+ sim_io_printf (sd, ",0x%08lx", entry->addr);
+ }
+ sim_io_printf (sd, "\n");
+ }
+ return SIM_RC_OK;
+ break;
+ }
+
+ default:
+ sim_io_eprintf (sd, "Unknown watch option %d\n", opt);
+ return SIM_RC_FAIL;
+
+ }
+
+ return SIM_RC_FAIL;
+}
+
+
+/* "memory" module install handler.
+
+ This is called via sim_module_install to install the "memory" subsystem
+ into the simulator. */
+
+static MODULE_INIT_FN sim_memory_init;
+static MODULE_UNINSTALL_FN sim_memory_uninstall;
+
+SIM_RC
+sim_memopt_install (SIM_DESC sd)
+{
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+ sim_add_option_table (sd, memory_options);
+ sim_module_add_uninstall_fn (sd, sim_memory_uninstall);
+ sim_module_add_init_fn (sd, sim_memory_init);
+ return SIM_RC_OK;
+}
+
+
+/* Uninstall the "memory" subsystem from the simulator. */
+
+static void
+sim_memory_uninstall (SIM_DESC sd)
+{
+ /* FIXME: free buffers, etc. */
+}
+
+
+static SIM_RC
+sim_memory_init (SIM_DESC sd)
+{
+ /* FIXME: anything needed? */
+ return SIM_RC_OK;
+}