5 #include "mn10300_sim.h"
15 host_callback *mn10300_callback;
20 static struct hash_entry *lookup_hash PARAMS ((uint32 ins));
21 static long hash PARAMS ((long));
22 static void init_system PARAMS ((void));
28 struct hash_entry *next;
34 struct hash_entry hash_table[MAX_HASH+1];
44 static struct hash_entry *
50 h = &hash_table[hash(ins)];
52 while ((ins & h->mask) != h->opcode)
56 (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR looking up hash for 0x%x, PC=0x%x\n", ins, PC);
64 /* FIXME These would more efficient to use than load_mem/store_mem,
65 but need to be changed to use the memory map. */
79 return (a[1] << 8) + (a[0]);
87 return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
100 put_half (addr, data)
106 a[1] = (data >> 8) & 0xff;
110 put_word (addr, data)
116 a[1] = (data >> 8) & 0xff;
117 a[2] = (data >> 16) & 0xff;
118 a[3] = (data >> 24) & 0xff;
127 uint8 *p = addr + State.mem;
134 return p[1] << 8 | p[0];
136 return p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0];
143 store_mem (addr, len, data)
148 uint8 *p = addr + State.mem;
178 State.mem = (uint8 *) calloc (1, 1 << power);
181 (*mn10300_callback->printf_filtered) (mn10300_callback, "Allocation of main memory failed.\n");
194 sim_write (addr, buffer, size)
196 unsigned char *buffer;
203 for (i = 0; i < size; i++)
204 store_mem (addr + i, 1, buffer[i]);
214 struct hash_entry *h;
218 if (strcmp (args, "-t") == 0)
219 mn10300_debug = DEBUG;
222 (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR: unsupported option(s): %s\n",args);
225 /* put all the opcodes in the hash table */
226 for (s = Simops; s->func; s++)
228 h = &hash_table[hash(s->opcode)];
230 /* go to the last entry in the chain */
236 h->next = calloc(1,sizeof(struct hash_entry));
241 h->opcode = s->opcode;
257 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile %d\n", n);
261 sim_set_profile_size (n)
264 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile_size %d\n", n);
268 sim_resume (step, siggnal)
273 struct interrupt_generator *intgen;
276 State.exception = SIGTRAP;
282 /* Fetch the current instruction. */
285 opcode = (inst & 0x07e0) >> 5;
287 /* Decode the opcode field. */
288 if ((opcode & 0x30) == 0
289 || (opcode & 0x38) == 0x10)
293 while (!State.exception);
300 mn10300_debug = DEBUG;
310 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_info\n");
314 sim_create_inferior (start_address, argv, env)
315 SIM_ADDR start_address;
329 sim_set_callbacks (p)
332 mn10300_callback = p;
335 /* All the code for exiting, signals, etc needs to be revamped.
337 This is enough to get c-torture limping though. */
340 sim_stop_reason (reason, sigrc)
341 enum sim_stop *reason;
344 *reason = sim_stopped;
345 if (State.exception == SIGQUIT)
348 *sigrc = State.exception;
352 sim_fetch_register (rn, memory)
354 unsigned char *memory;
356 put_word (memory, State.regs[rn]);
360 sim_store_register (rn, memory)
362 unsigned char *memory;
364 State.regs[rn] = get_word (memory);
368 sim_read (addr, buffer, size)
370 unsigned char *buffer;
374 for (i = 0; i < size; i++)
375 buffer[i] = load_mem (addr + i, 1);
384 (*mn10300_callback->printf_filtered) (mn10300_callback, "\"%s\" is not a valid mn10300 simulator command.\n", cmd);
388 sim_load (prog, from_tty)
392 /* Return nonzero so GDB will handle it. */