4 #include "remote-sim.h"
8 #define IMEM_SIZE 18 /* D10V instruction memory size is 18 bits */
9 #define DMEM_SIZE 16 /* Data memory is 64K (but only 32K internal RAM) */
10 #define UMEM_SIZE 17 /* each unified memory region is 17 bits */
12 enum _leftright { LEFT_FIRST, RIGHT_FIRST };
15 host_callback *d10v_callback;
16 unsigned long ins_type_counters[ (int)INS_MAX ];
20 static int init_text_p = 0;
25 static long hash PARAMS ((long insn, int format));
26 static struct hash_entry *lookup_hash PARAMS ((uint32 ins, int size));
27 static void get_operands PARAMS ((struct simops *s, uint32 ins));
28 static void do_long PARAMS ((uint32 ins));
29 static void do_2_short PARAMS ((uint16 ins1, uint16 ins2, enum _leftright leftright));
30 static void do_parallel PARAMS ((uint16 ins1, uint16 ins2));
31 static char *add_commas PARAMS ((char *buf, int sizeof_buf, unsigned long value));
32 extern void sim_size PARAMS ((int power));
33 static void init_system PARAMS ((void));
34 extern int sim_write PARAMS ((SIM_ADDR addr, unsigned char *buffer, int size));
35 extern void sim_open PARAMS ((char *args));
36 extern void sim_close PARAMS ((int quitting));
37 extern void sim_set_profile PARAMS ((int n));
38 extern void sim_set_profile_size PARAMS ((int n));
39 extern void sim_resume PARAMS ((int step, int siggnal));
40 extern void sim_info PARAMS ((int verbose));
41 extern void sim_create_inferior PARAMS ((SIM_ADDR start_address, char **argv, char **env));
42 extern void sim_kill PARAMS ((void));
43 extern void sim_set_callbacks PARAMS ((host_callback *p));
44 extern void sim_stop_reason PARAMS ((enum sim_stop *reason, int *sigrc));
45 extern void sim_fetch_register PARAMS ((int rn, unsigned char *memory));
46 extern void sim_store_register PARAMS ((int rn, unsigned char *memory));
47 extern int sim_read PARAMS ((SIM_ADDR addr, unsigned char *buffer, int size));
48 extern void sim_do_command PARAMS ((char *cmd));
51 #if defined(__GNUC__) && defined(__OPTIMIZE__)
52 #define INLINE __inline__
61 struct hash_entry *next;
68 struct hash_entry hash_table[MAX_HASH+1];
75 if (format & LONG_OPCODE)
76 return ((insn & 0x3F000000) >> 24);
78 return((insn & 0x7E00) >> 9);
81 INLINE static struct hash_entry *
82 lookup_hash (ins, size)
89 h = &hash_table[(ins & 0x3F000000) >> 24];
91 h = &hash_table[(ins & 0x7E00) >> 9];
93 while ((ins & h->mask) != h->opcode || h->size != size)
97 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR looking up hash for %x at PC %x\n",ins, PC);
106 get_operands (struct simops *s, uint32 ins)
108 int i, shift, bits, flags;
110 for (i=0; i < s->numops; i++)
112 shift = s->operands[3*i];
113 bits = s->operands[3*i+1];
114 flags = s->operands[3*i+2];
115 mask = 0x7FFFFFFF >> (31 - bits);
116 OP[i] = (ins >> shift) & mask;
127 for (s = exec_bfd->sections; s; s = s->next)
128 if (strcmp (bfd_get_section_name (exec_bfd, s), ".text") == 0)
131 text_start = bfd_get_section_vma (exec_bfd, s);
132 text_end = text_start + bfd_section_size (exec_bfd, s);
137 return (PC << 2) + text_start;
144 struct hash_entry *h;
146 if ((d10v_debug & DEBUG_INSTRUCTION) != 0)
147 (*d10v_callback->printf_filtered) (d10v_callback, "do_long 0x%x\n", ins);
149 h = lookup_hash (ins, 1);
150 get_operands (h->ops, ins);
151 State.ins_type = INS_LONG;
152 ins_type_counters[ (int)State.ins_type ]++;
157 do_2_short (ins1, ins2, leftright)
159 enum _leftright leftright;
161 struct hash_entry *h;
163 enum _ins_type first, second;
166 if ((d10v_debug & DEBUG_INSTRUCTION) != 0)
167 (*d10v_callback->printf_filtered) (d10v_callback, "do_2_short 0x%x (%s) -> 0x%x\n",
168 ins1, (leftright) ? "left" : "right", ins2);
171 if (leftright == LEFT_FIRST)
175 ins_type_counters[ (int)INS_LEFTRIGHT ]++;
181 ins_type_counters[ (int)INS_RIGHTLEFT ]++;
184 h = lookup_hash (ins1, 0);
185 get_operands (h->ops, ins1);
186 State.ins_type = first;
187 ins_type_counters[ (int)State.ins_type ]++;
190 /* If the PC has changed (ie, a jump), don't do the second instruction */
191 if (orig_pc == PC && !State.exception)
193 h = lookup_hash (ins2, 0);
194 get_operands (h->ops, ins2);
195 State.ins_type = second;
196 ins_type_counters[ (int)State.ins_type ]++;
197 ins_type_counters[ (int)INS_CYCLES ]++;
200 else if (orig_pc != PC && !State.exception)
201 ins_type_counters[ (int)INS_COND_JUMP ]++;
205 do_parallel (ins1, ins2)
208 struct hash_entry *h1, *h2;
210 if ((d10v_debug & DEBUG_INSTRUCTION) != 0)
211 (*d10v_callback->printf_filtered) (d10v_callback, "do_parallel 0x%x || 0x%x\n", ins1, ins2);
213 ins_type_counters[ (int)INS_PARALLEL ]++;
214 h1 = lookup_hash (ins1, 0);
215 h2 = lookup_hash (ins2, 0);
217 if (h1->ops->exec_type == PARONLY)
219 get_operands (h1->ops, ins1);
220 State.ins_type = INS_LEFT_COND_TEST;
221 ins_type_counters[ (int)State.ins_type ]++;
225 ins_type_counters[ (int)INS_COND_TRUE ]++;
226 get_operands (h2->ops, ins2);
227 State.ins_type = INS_RIGHT_COND_EXE;
228 ins_type_counters[ (int)State.ins_type ]++;
232 ins_type_counters[ (int)INS_COND_FALSE ]++;
234 else if (h2->ops->exec_type == PARONLY)
236 get_operands (h2->ops, ins2);
237 State.ins_type = INS_RIGHT_COND_TEST;
238 ins_type_counters[ (int)State.ins_type ]++;
242 ins_type_counters[ (int)INS_COND_TRUE ]++;
243 get_operands (h1->ops, ins1);
244 State.ins_type = INS_LEFT_COND_EXE;
245 ins_type_counters[ (int)State.ins_type ]++;
249 ins_type_counters[ (int)INS_COND_FALSE ]++;
253 get_operands (h1->ops, ins1);
254 State.ins_type = INS_LEFT_PARALLEL;
255 ins_type_counters[ (int)State.ins_type ]++;
257 if (!State.exception)
259 get_operands (h2->ops, ins2);
260 State.ins_type = INS_RIGHT_PARALLEL;
261 ins_type_counters[ (int)State.ins_type ]++;
268 add_commas(buf, sizeof_buf, value)
274 char *endbuf = buf + sizeof_buf - 1;
284 *--endbuf = (value % 10) + '0';
285 } while ((value /= 10) != 0);
303 free (State.umem[i]);
304 State.umem[i] = NULL;
311 State.imem = (uint8 *)calloc(1,1<<IMEM_SIZE);
312 State.dmem = (uint8 *)calloc(1,1<<DMEM_SIZE);
314 State.umem[i] = NULL;
315 State.umem[0] = (uint8 *)calloc(1,1<<UMEM_SIZE);
316 State.umem[1] = (uint8 *)calloc(1,1<<UMEM_SIZE);
317 State.umem[2] = (uint8 *)calloc(1,1<<UMEM_SIZE);
318 State.umem[127] = (uint8 *)calloc(1,1<<UMEM_SIZE);
319 if (!State.imem || !State.dmem || !State.umem[0] || !State.umem[1] || !State.umem[2] || !State.umem[127] )
321 (*d10v_callback->printf_filtered) (d10v_callback, "Memory allocation failed.\n");
330 if ((d10v_debug & DEBUG_MEMSIZE) != 0)
333 (*d10v_callback->printf_filtered) (d10v_callback,
334 "Allocated %s bytes instruction memory and\n",
335 add_commas (buffer, sizeof (buffer), (1UL<<IMEM_SIZE)));
337 (*d10v_callback->printf_filtered) (d10v_callback, " %s bytes data memory.\n",
338 add_commas (buffer, sizeof (buffer), (1UL<<IMEM_SIZE)));
351 xfer_mem (addr, buffer, size, write)
353 unsigned char *buffer;
361 if ((d10v_debug & DEBUG_INSTRUCTION) != 0)
364 (*d10v_callback->printf_filtered) (d10v_callback, "sim_write %d bytes to 0x%x\n", size, addr);
366 (*d10v_callback->printf_filtered) (d10v_callback, "sim_read %d bytes from 0x%x\n", size, addr);
370 /* to access data, we use the following mapping */
371 /* 0x01000000 - 0x0103ffff : instruction memory */
372 /* 0x02000000 - 0x0200ffff : data memory */
373 /* 0x03000000 - 0x03ffffff : unified memory */
375 if ( (addr & 0x03000000) == 0x03000000)
380 segment = addr >> UMEM_SIZE;
382 if (!State.umem[segment])
383 State.umem[segment] = (uint8 *)calloc(1,1<<UMEM_SIZE);
384 if (!State.umem[segment])
386 (*d10v_callback->printf_filtered) (d10v_callback, "Memory allocation failed.\n");
390 (*d10v_callback->printf_filtered) (d10v_callback,"Allocated %s bytes unified memory to region %d\n",
391 add_commas (buffer, sizeof (buffer), (1UL<<IMEM_SIZE)), segment);
393 /* FIXME: need to check size and read/write multiple segments if necessary */
395 memcpy (State.umem[segment]+addr, buffer, size);
397 memcpy (buffer, State.umem[segment]+addr, size);
399 else if ( (addr & 0x03000000) == 0x02000000)
403 if (size > (1<<(DMEM_SIZE-1)))
405 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: data section is only %d bytes.\n",1<<(DMEM_SIZE-1));
409 memcpy (State.dmem+addr, buffer, size);
411 memcpy (buffer, State.dmem+addr, size);
413 else if ( (addr & 0x03000000) == 0x01000000)
415 /* INSTRUCTION MEMORY */
417 if (size > (1<<IMEM_SIZE))
419 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: inst section is only %d bytes.\n",1<<IMEM_SIZE);
423 memcpy (State.imem+addr, buffer, size);
425 memcpy (buffer, State.imem+addr, size);
429 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: address 0x%x is not in valid range\n",addr);
430 (*d10v_callback->printf_filtered) (d10v_callback, "Instruction addresses start at 0x01000000\n");
431 (*d10v_callback->printf_filtered) (d10v_callback, "Data addresses start at 0x02000000\n");
432 (*d10v_callback->printf_filtered) (d10v_callback, "Unified addresses start at 0x03000000\n");
443 sim_write (addr, buffer, size)
445 unsigned char *buffer;
448 return xfer_mem( addr, buffer, size, 1);
452 sim_read (addr, buffer, size)
454 unsigned char *buffer;
457 return xfer_mem( addr, buffer, size, 0);
466 struct hash_entry *h;
467 static int init_p = 0;
472 if (strcmp (args, "-t") == 0)
476 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: unsupported option(s): %s\n",args);
479 /* put all the opcodes in the hash table */
482 for (s = Simops; s->func; s++)
484 h = &hash_table[hash(s->opcode,s->format)];
486 /* go to the last entry in the chain */
492 h->next = calloc(1,sizeof(struct hash_entry));
497 h->opcode = s->opcode;
498 h->size = s->is_long;
515 (*d10v_callback->printf_filtered) (d10v_callback, "sim_set_profile %d\n",n);
519 sim_set_profile_size (n)
522 (*d10v_callback->printf_filtered) (d10v_callback, "sim_set_profile_size %d\n",n);
536 if ( (addr & 0xfff0) != 0xff00)
537 (*d10v_callback->printf_filtered) (d10v_callback, "Data address 0x%lx is in I/O space, pc = 0x%lx.\n",
538 (long)addr, (long)decode_pc ());
539 return State.dmem + addr;
546 /* instruction memory */
547 return (DMAP & 0xf) * 0x4000 + State.imem;
550 /* this is ugly because we allocate unified memory in 128K segments and */
551 /* dmap addresses 16k segments */
552 seg = (DMAP & 0x3ff) >> 3;
553 if (State.umem[seg] == NULL)
555 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: unified memory region %d unmapped, pc = 0x%lx\n",
556 seg, (long)decode_pc ());
559 return State.umem[seg] + (DMAP & 7) * 0x4000;
562 return State.dmem + addr;
569 uint32 pc = ((uint32)PC) << 2;
578 return State.imem + pc;
580 if (State.umem[imap & 0xff] == NULL)
582 (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: unified memory region %d unmapped, pc = 0x%lx\n",
583 imap & 0xff, (long)PC);
584 State.exception = SIGILL;
588 return State.umem[imap & 0xff] + pc;
592 static int stop_simulator;
601 /* Run (or resume) the program. */
603 sim_resume (step, siggnal)
609 /* (*d10v_callback->printf_filtered) (d10v_callback, "sim_resume (%d,%d) PC=0x%x\n",step,siggnal,PC); */
611 prev = signal(SIGINT, sim_ctrl_c);
612 stop_simulator = step;
616 inst = get_longword( pc_addr() );
617 State.pc_changed = 0;
618 ins_type_counters[ (int)INS_CYCLES ]++;
619 switch (inst & 0xC0000000)
622 /* long instruction */
623 do_long (inst & 0x3FFFFFFF);
627 do_2_short ( inst & 0x7FFF, (inst & 0x3FFF8000) >> 15, 0);
631 do_2_short ((inst & 0x3FFF8000) >> 15, inst & 0x7FFF, 1);
634 do_parallel ((inst & 0x3FFF8000) >> 15, inst & 0x7FFF);
638 if (State.RP && PC == RPT_E)
646 else if (!State.pc_changed)
649 while ( !State.exception && !stop_simulator);
651 if (step && !State.exception)
652 State.exception = SIGTRAP;
654 signal(SIGINT, prev);
676 unsigned long left = ins_type_counters[ (int)INS_LEFT ] + ins_type_counters[ (int)INS_LEFT_COND_EXE ];
677 unsigned long left_nops = ins_type_counters[ (int)INS_LEFT_NOPS ];
678 unsigned long left_parallel = ins_type_counters[ (int)INS_LEFT_PARALLEL ];
679 unsigned long left_cond = ins_type_counters[ (int)INS_LEFT_COND_TEST ];
680 unsigned long left_total = left + left_parallel + left_cond + left_nops;
682 unsigned long right = ins_type_counters[ (int)INS_RIGHT ] + ins_type_counters[ (int)INS_RIGHT_COND_EXE ];
683 unsigned long right_nops = ins_type_counters[ (int)INS_RIGHT_NOPS ];
684 unsigned long right_parallel = ins_type_counters[ (int)INS_RIGHT_PARALLEL ];
685 unsigned long right_cond = ins_type_counters[ (int)INS_RIGHT_COND_TEST ];
686 unsigned long right_total = right + right_parallel + right_cond + right_nops;
688 unsigned long unknown = ins_type_counters[ (int)INS_UNKNOWN ];
689 unsigned long ins_long = ins_type_counters[ (int)INS_LONG ];
690 unsigned long parallel = ins_type_counters[ (int)INS_PARALLEL ];
691 unsigned long leftright = ins_type_counters[ (int)INS_LEFTRIGHT ];
692 unsigned long rightleft = ins_type_counters[ (int)INS_RIGHTLEFT ];
693 unsigned long cond_true = ins_type_counters[ (int)INS_COND_TRUE ];
694 unsigned long cond_false = ins_type_counters[ (int)INS_COND_FALSE ];
695 unsigned long cond_jump = ins_type_counters[ (int)INS_COND_JUMP ];
696 unsigned long cycles = ins_type_counters[ (int)INS_CYCLES ];
697 unsigned long total = (unknown + left_total + right_total + ins_long);
699 int size = strlen (add_commas (buf1, sizeof (buf1), total));
700 int parallel_size = strlen (add_commas (buf1, sizeof (buf1),
701 (left_parallel > right_parallel) ? left_parallel : right_parallel));
702 int cond_size = strlen (add_commas (buf1, sizeof (buf1), (left_cond > right_cond) ? left_cond : right_cond));
703 int nop_size = strlen (add_commas (buf1, sizeof (buf1), (left_nops > right_nops) ? left_nops : right_nops));
704 int normal_size = strlen (add_commas (buf1, sizeof (buf1), (left > right) ? left : right));
706 (*d10v_callback->printf_filtered) (d10v_callback,
707 "executed %*s left instruction(s), %*s normal, %*s parallel, %*s EXExxx, %*s nops\n",
708 size, add_commas (buf1, sizeof (buf1), left_total),
709 normal_size, add_commas (buf2, sizeof (buf2), left),
710 parallel_size, add_commas (buf3, sizeof (buf3), left_parallel),
711 cond_size, add_commas (buf4, sizeof (buf4), left_cond),
712 nop_size, add_commas (buf5, sizeof (buf5), left_nops));
714 (*d10v_callback->printf_filtered) (d10v_callback,
715 "executed %*s right instruction(s), %*s normal, %*s parallel, %*s EXExxx, %*s nops\n",
716 size, add_commas (buf1, sizeof (buf1), right_total),
717 normal_size, add_commas (buf2, sizeof (buf2), right),
718 parallel_size, add_commas (buf3, sizeof (buf3), right_parallel),
719 cond_size, add_commas (buf4, sizeof (buf4), right_cond),
720 nop_size, add_commas (buf5, sizeof (buf5), right_nops));
723 (*d10v_callback->printf_filtered) (d10v_callback,
724 "executed %*s long instruction(s)\n",
725 size, add_commas (buf1, sizeof (buf1), ins_long));
728 (*d10v_callback->printf_filtered) (d10v_callback,
729 "executed %*s parallel instruction(s)\n",
730 size, add_commas (buf1, sizeof (buf1), parallel));
733 (*d10v_callback->printf_filtered) (d10v_callback,
734 "executed %*s instruction(s) encoded L->R\n",
735 size, add_commas (buf1, sizeof (buf1), leftright));
738 (*d10v_callback->printf_filtered) (d10v_callback,
739 "executed %*s instruction(s) encoded R->L\n",
740 size, add_commas (buf1, sizeof (buf1), rightleft));
743 (*d10v_callback->printf_filtered) (d10v_callback,
744 "executed %*s unknown instruction(s)\n",
745 size, add_commas (buf1, sizeof (buf1), unknown));
748 (*d10v_callback->printf_filtered) (d10v_callback,
749 "executed %*s instruction(s) due to EXExxx condition being true\n",
750 size, add_commas (buf1, sizeof (buf1), cond_true));
753 (*d10v_callback->printf_filtered) (d10v_callback,
754 "skipped %*s instruction(s) due to EXExxx condition being false\n",
755 size, add_commas (buf1, sizeof (buf1), cond_false));
758 (*d10v_callback->printf_filtered) (d10v_callback,
759 "skipped %*s instruction(s) due to conditional branch succeeding\n",
760 size, add_commas (buf1, sizeof (buf1), cond_jump));
762 (*d10v_callback->printf_filtered) (d10v_callback,
763 "executed %*s cycle(s)\n",
764 size, add_commas (buf1, sizeof (buf1), cycles));
766 (*d10v_callback->printf_filtered) (d10v_callback,
767 "executed %*s total instructions\n",
768 size, add_commas (buf1, sizeof (buf1), total));
772 sim_create_inferior (start_address, argv, env)
773 SIM_ADDR start_address;
779 (*d10v_callback->printf_filtered) (d10v_callback, "sim_create_inferior: PC=0x%x\n", start_address);
782 /* reset all state information */
783 memset (&State.regs, 0, (int)&State.imem - (int)&State.regs[0]);
786 PC = start_address >> 2;
788 /* cpu resets imap0 to 0 and imap1 to 0x7f, but D10V-EVA board */
789 /* resets imap0 and imap1 to 0x1000. */
811 sim_stop_reason (reason, sigrc)
812 enum sim_stop *reason;
815 /* (*d10v_callback->printf_filtered) (d10v_callback, "sim_stop_reason: PC=0x%x\n",PC<<2); */
817 switch (State.exception)
819 case SIG_D10V_STOP: /* stop instruction */
820 *reason = sim_exited;
824 case SIG_D10V_EXIT: /* exit trap */
825 *reason = sim_exited;
826 *sigrc = State.regs[2];
829 default: /* some signal */
830 *reason = sim_stopped;
831 *sigrc = State.exception;
837 sim_fetch_register (rn, memory)
839 unsigned char *memory;
845 WRITE_64 (memory, State.a[rn-35]);
847 WRITE_16 (memory, IMAP0);
849 WRITE_16 (memory, IMAP1);
851 WRITE_16 (memory, DMAP);
853 WRITE_16 (memory, State.regs[rn]);
857 sim_store_register (rn, memory)
859 unsigned char *memory;
865 State.a[rn-35] = READ_64 (memory) & MASK40;
867 SET_DMAP( READ_16(memory) );
869 SET_IMAP1( READ_16(memory) );
871 SET_IMAP0( READ_16(memory) );
873 State.regs[rn]= READ_16 (memory);
881 (*d10v_callback->printf_filtered) (d10v_callback, "sim_do_command: %s\n",cmd);
885 sim_load (prog, from_tty)
889 /* Return nonzero so GDB will handle it. */