1 /* Simulator memory option handling.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "sim-assert.h"
23 #include "sim-options.h"
36 /* Memory fill byte */
37 static unsigned8 fill_byte_value;
38 static int fill_byte_flag = 0;
40 /* Memory command line options. */
43 OPTION_MEMORY_DELETE = OPTION_START,
52 static DECLARE_OPTION_HANDLER (memory_option_handler);
54 static const OPTION memory_options[] =
56 { {"memory-delete", required_argument, NULL, OPTION_MEMORY_DELETE },
57 '\0', "ADDRESS|all", "Delete memory at ADDRESS (all addresses)",
58 memory_option_handler },
59 { {"delete-memory", required_argument, NULL, OPTION_MEMORY_DELETE },
60 '\0', "ADDRESS", NULL,
61 memory_option_handler },
63 { {"memory-region", required_argument, NULL, OPTION_MEMORY_REGION },
64 '\0', "ADDRESS,SIZE[,MODULO]", "Add a memory region",
65 memory_option_handler },
67 { {"memory-alias", required_argument, NULL, OPTION_MEMORY_ALIAS },
68 '\0', "ADDRESS,SIZE{,ADDRESS}", "Add memory shadow",
69 memory_option_handler },
71 { {"memory-size", required_argument, NULL, OPTION_MEMORY_SIZE },
72 '\0', "SIZE", "Add memory at address zero",
73 memory_option_handler },
75 { {"memory-fill", required_argument, NULL, OPTION_MEMORY_FILL },
76 '\0', "VALUE", "Fill subsequently added memory regions",
77 memory_option_handler },
79 { {"memory-clear", no_argument, NULL, OPTION_MEMORY_CLEAR },
80 '\0', NULL, "Clear subsequently added memory regions",
81 memory_option_handler },
83 { {"memory-info", no_argument, NULL, OPTION_MEMORY_INFO },
84 '\0', NULL, "List configurable memory regions",
85 memory_option_handler },
86 { {"info-memory", no_argument, NULL, OPTION_MEMORY_INFO },
88 memory_option_handler },
90 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
95 do_memopt_add (SIM_DESC sd,
99 address_word nr_bytes,
105 unsigned fill_length;
110 /* Buffer already given. sim_memory_uninstall will free it. */
111 sim_core_attach (sd, NULL,
112 level, access_read_write_exec, space,
113 addr, nr_bytes, modulo, NULL, buffer);
115 free_buffer = buffer;
116 fill_buffer = buffer;
117 fill_length = (modulo == 0) ? nr_bytes : modulo;
121 /* Allocate new well-aligned buffer, just as sim_core_attach(). */
122 void *aligned_buffer;
123 int padding = (addr % sizeof (unsigned64));
124 unsigned long bytes = (modulo == 0 ? nr_bytes : modulo) + padding;
126 free_buffer = zalloc (bytes);
127 aligned_buffer = (char*) free_buffer + padding;
129 sim_core_attach (sd, NULL,
130 level, access_read_write_exec, space,
131 addr, nr_bytes, modulo, NULL, aligned_buffer);
133 fill_buffer = aligned_buffer;
134 fill_length = (modulo == 0) ? nr_bytes : modulo;
139 ASSERT (fill_buffer != 0);
140 memset ((char*) fill_buffer, fill_byte_value, fill_length);
143 while ((*entry) != NULL)
144 entry = &(*entry)->next;
145 (*entry) = ZALLOC (sim_memopt);
146 (*entry)->level = level;
147 (*entry)->space = space;
148 (*entry)->addr = addr;
149 (*entry)->nr_bytes = nr_bytes;
150 (*entry)->modulo = modulo;
151 (*entry)->buffer = free_buffer;
157 do_memopt_delete (SIM_DESC sd,
162 sim_memopt **entry = &STATE_MEMOPT (sd);
164 while ((*entry) != NULL
165 && ((*entry)->level != level
166 || (*entry)->space != space
167 || (*entry)->addr != addr))
168 entry = &(*entry)->next;
169 if ((*entry) == NULL)
171 sim_io_eprintf (sd, "Memory at 0x%lx not found, not deleted\n",
175 /* delete any buffer */
176 if ((*entry)->buffer != NULL)
177 zfree ((*entry)->buffer);
178 /* delete it and its aliases */
180 *entry = (*entry)->next;
181 while (alias != NULL)
183 sim_memopt *dead = alias;
184 alias = alias->alias;
185 sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr);
193 parse_size (char *chp,
194 address_word *nr_bytes,
197 /* <nr_bytes> [ "%" <modulo> ] */
198 *nr_bytes = strtoul (chp, &chp, 0);
201 *modulo = strtoul (chp + 1, &chp, 0);
207 parse_ulong_value (char *chp,
208 unsigned long *value)
210 *value = strtoul (chp, &chp, 0);
215 parse_addr (char *chp,
220 /* [ <space> ": " ] <addr> [ "@" <level> ] */
221 *addr = (unsigned long) strtoul (chp, &chp, 0);
225 *addr = (unsigned long) strtoul (chp + 1, &chp, 0);
229 *level = strtoul (chp + 1, &chp, 0);
236 memory_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
237 char *arg, int is_command)
242 case OPTION_MEMORY_DELETE:
243 if (strcasecmp (arg, "all") == 0)
245 while (STATE_MEMOPT (sd) != NULL)
246 do_memopt_delete (sd,
247 STATE_MEMOPT (sd)->level,
248 STATE_MEMOPT (sd)->space,
249 STATE_MEMOPT (sd)->addr);
256 address_word addr = 0;
257 parse_addr (arg, &level, &space, &addr);
258 return do_memopt_delete (sd, level, space, addr);
261 case OPTION_MEMORY_REGION:
266 address_word addr = 0;
267 address_word nr_bytes = 0;
269 /* parse the arguments */
270 chp = parse_addr (chp, &level, &space, &addr);
273 sim_io_eprintf (sd, "Missing size for memory-region\n");
276 chp = parse_size (chp + 1, &nr_bytes, &modulo);
279 modulo = strtoul (chp + 1, &chp, 0);
280 /* try to attach/insert it */
281 do_memopt_add (sd, level, space, addr, nr_bytes, modulo,
282 &STATE_MEMOPT (sd), NULL);
286 case OPTION_MEMORY_ALIAS:
291 address_word addr = 0;
292 address_word nr_bytes = 0;
295 /* parse the arguments */
296 chp = parse_addr (chp, &level, &space, &addr);
299 sim_io_eprintf (sd, "Missing size for memory-region\n");
302 chp = parse_size (chp + 1, &nr_bytes, &modulo);
303 /* try to attach/insert the main record */
304 entry = do_memopt_add (sd, level, space, addr, nr_bytes, modulo,
307 /* now attach all the aliases */
312 address_word a_addr = addr;
313 chp = parse_addr (chp + 1, &a_level, &a_space, &a_addr);
314 do_memopt_add (sd, a_level, a_space, a_addr, nr_bytes, modulo,
315 &entry->alias, entry->buffer);
320 case OPTION_MEMORY_SIZE:
324 address_word addr = 0;
325 address_word nr_bytes = 0;
327 /* parse the arguments */
328 parse_size (arg, &nr_bytes, &modulo);
329 /* try to attach/insert it */
330 do_memopt_add (sd, level, space, addr, nr_bytes, modulo,
331 &STATE_MEMOPT (sd), NULL);
335 case OPTION_MEMORY_CLEAR:
337 fill_byte_value = (unsigned8) 0;
343 case OPTION_MEMORY_FILL:
345 unsigned long fill_value;
346 parse_ulong_value (arg, &fill_value);
347 if (fill_value > 255)
349 sim_io_eprintf (sd, "Missing fill value between 0 and 255\n");
352 fill_byte_value = (unsigned8) fill_value;
358 case OPTION_MEMORY_INFO:
361 sim_io_printf (sd, "Memory maps:\n");
362 for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next)
365 sim_io_printf (sd, " memory");
366 if (entry->alias == NULL)
367 sim_io_printf (sd, " region ");
369 sim_io_printf (sd, " alias ");
370 if (entry->space != 0)
371 sim_io_printf (sd, "0x%lx:", (long) entry->space);
372 sim_io_printf (sd, "0x%08lx", (long) entry->addr);
373 if (entry->level != 0)
374 sim_io_printf (sd, "@0x%lx", (long) entry->level);
375 sim_io_printf (sd, ",0x%lx",
376 (long) entry->nr_bytes);
377 if (entry->modulo != 0)
378 sim_io_printf (sd, "%%0x%lx", (long) entry->modulo);
379 for (alias = entry->alias;
383 if (alias->space != 0)
384 sim_io_printf (sd, "0x%lx:", (long) alias->space);
385 sim_io_printf (sd, ",0x%08lx", (long) alias->addr);
386 if (alias->level != 0)
387 sim_io_printf (sd, "@0x%lx", (long) alias->level);
389 sim_io_printf (sd, "\n");
396 sim_io_eprintf (sd, "Unknown memory option %d\n", opt);
405 /* "memory" module install handler.
407 This is called via sim_module_install to install the "memory" subsystem
408 into the simulator. */
410 static MODULE_INIT_FN sim_memory_init;
411 static MODULE_UNINSTALL_FN sim_memory_uninstall;
414 sim_memopt_install (SIM_DESC sd)
416 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
417 sim_add_option_table (sd, NULL, memory_options);
418 sim_module_add_uninstall_fn (sd, sim_memory_uninstall);
419 sim_module_add_init_fn (sd, sim_memory_init);
424 /* Uninstall the "memory" subsystem from the simulator. */
427 sim_memory_uninstall (SIM_DESC sd)
429 sim_memopt **entry = &STATE_MEMOPT (sd);
432 while ((*entry) != NULL)
434 /* delete any buffer */
435 if ((*entry)->buffer != NULL)
436 zfree ((*entry)->buffer);
438 /* delete it and its aliases */
440 while (alias != NULL)
442 sim_memopt *dead = alias;
443 alias = alias->alias;
444 sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr);
449 *entry = (*entry)->next;
455 sim_memory_init (SIM_DESC sd)
457 /* FIXME: anything needed? */